WebView.java revision fa89c50ae7ca06b3a9c42ee8d4b8eea6567b5e2e
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.Interpolator; 37import android.graphics.Paint; 38import android.graphics.PaintFlagsDrawFilter; 39import android.graphics.Picture; 40import android.graphics.Point; 41import android.graphics.Rect; 42import android.graphics.RectF; 43import android.graphics.Region; 44import android.graphics.drawable.Drawable; 45import android.net.Uri; 46import android.net.http.SslCertificate; 47import android.os.AsyncTask; 48import android.os.Bundle; 49import android.os.Handler; 50import android.os.Message; 51import android.os.SystemClock; 52import android.provider.Settings; 53import android.speech.tts.TextToSpeech; 54import android.text.Selection; 55import android.text.Spannable; 56import android.util.AttributeSet; 57import android.util.EventLog; 58import android.util.Log; 59import android.util.TypedValue; 60import android.view.Gravity; 61import android.view.KeyEvent; 62import android.view.LayoutInflater; 63import android.view.MotionEvent; 64import android.view.ScaleGestureDetector; 65import android.view.SoundEffectConstants; 66import android.view.VelocityTracker; 67import android.view.View; 68import android.view.ViewConfiguration; 69import android.view.ViewGroup; 70import android.view.ViewTreeObserver; 71import android.view.accessibility.AccessibilityManager; 72import android.view.inputmethod.EditorInfo; 73import android.view.inputmethod.InputConnection; 74import android.view.inputmethod.InputMethodManager; 75import android.webkit.WebTextView.AutoCompleteAdapter; 76import android.webkit.WebViewCore.EventHub; 77import android.webkit.WebViewCore.TouchEventData; 78import android.webkit.WebViewCore.TouchHighlightData; 79import android.widget.AbsoluteLayout; 80import android.widget.Adapter; 81import android.widget.AdapterView; 82import android.widget.AdapterView.OnItemClickListener; 83import android.widget.ArrayAdapter; 84import android.widget.CheckedTextView; 85import android.widget.LinearLayout; 86import android.widget.ListView; 87import android.widget.Scroller; 88import android.widget.Toast; 89 90import junit.framework.Assert; 91 92import java.io.File; 93import java.io.FileInputStream; 94import java.io.FileNotFoundException; 95import java.io.FileOutputStream; 96import java.io.IOException; 97import java.io.InputStreamReader; 98import java.net.URLDecoder; 99import java.util.ArrayList; 100import java.util.HashMap; 101import java.util.HashSet; 102import java.util.List; 103import java.util.Map; 104import java.util.Set; 105import java.util.regex.Matcher; 106import java.util.regex.Pattern; 107 108/** 109 * <p>A View that displays web pages. This class is the basis upon which you 110 * can roll your own web browser or simply display some online content within your Activity. 111 * It uses the WebKit rendering engine to display 112 * web pages and includes methods to navigate forward and backward 113 * through a history, zoom in and out, perform text searches and more.</p> 114 * <p>To enable the built-in zoom, set 115 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 116 * (introduced in API version 3). 117 * <p>Note that, in order for your Activity to access the Internet and load web pages 118 * in a WebView, you must add the {@code INTERNET} permissions to your 119 * Android Manifest file:</p> 120 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 121 * 122 * <p>This must be a child of the <a 123 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 124 * element.</p> 125 * 126 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 127 * tutorial</a>.</p> 128 * 129 * <h3>Basic usage</h3> 130 * 131 * <p>By default, a WebView provides no browser-like widgets, does not 132 * enable JavaScript and web page errors are ignored. If your goal is only 133 * to display some HTML as a part of your UI, this is probably fine; 134 * the user won't need to interact with the web page beyond reading 135 * it, and the web page won't need to interact with the user. If you 136 * actually want a full-blown web browser, then you probably want to 137 * invoke the Browser application with a URL Intent rather than show it 138 * with a WebView. For example: 139 * <pre> 140 * Uri uri = Uri.parse("http://www.example.com"); 141 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 142 * startActivity(intent); 143 * </pre> 144 * <p>See {@link android.content.Intent} for more information.</p> 145 * 146 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 147 * or set the entire Activity window as a WebView during {@link 148 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 149 * <pre class="prettyprint"> 150 * WebView webview = new WebView(this); 151 * setContentView(webview); 152 * </pre> 153 * 154 * <p>Then load the desired web page:</p> 155 * <pre> 156 * // Simplest usage: note that an exception will NOT be thrown 157 * // if there is an error loading this page (see below). 158 * webview.loadUrl("http://slashdot.org/"); 159 * 160 * // OR, you can also load from an HTML string: 161 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 162 * webview.loadData(summary, "text/html", "utf-8"); 163 * // ... although note that there are restrictions on what this HTML can do. 164 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 165 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 166 * </pre> 167 * 168 * <p>A WebView has several customization points where you can add your 169 * own behavior. These are:</p> 170 * 171 * <ul> 172 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 173 * This class is called when something that might impact a 174 * browser UI happens, for instance, progress updates and 175 * JavaScript alerts are sent here (see <a 176 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 177 * </li> 178 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 179 * It will be called when things happen that impact the 180 * rendering of the content, eg, errors or form submissions. You 181 * can also intercept URL loading here (via {@link 182 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 183 * shouldOverrideUrlLoading()}).</li> 184 * <li>Modifying the {@link android.webkit.WebSettings}, such as 185 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 186 * setJavaScriptEnabled()}. </li> 187 * <li>Adding JavaScript-to-Java interfaces with the {@link 188 * android.webkit.WebView#addJavascriptInterface} method. 189 * This lets you bind Java objects into the WebView so they can be 190 * controlled from the web pages JavaScript.</li> 191 * </ul> 192 * 193 * <p>Here's a more complicated example, showing error handling, 194 * settings, and progress notification:</p> 195 * 196 * <pre class="prettyprint"> 197 * // Let's display the progress in the activity title bar, like the 198 * // browser app does. 199 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 200 * 201 * webview.getSettings().setJavaScriptEnabled(true); 202 * 203 * final Activity activity = this; 204 * webview.setWebChromeClient(new WebChromeClient() { 205 * public void onProgressChanged(WebView view, int progress) { 206 * // Activities and WebViews measure progress with different scales. 207 * // The progress meter will automatically disappear when we reach 100% 208 * activity.setProgress(progress * 1000); 209 * } 210 * }); 211 * webview.setWebViewClient(new WebViewClient() { 212 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 213 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 214 * } 215 * }); 216 * 217 * webview.loadUrl("http://slashdot.org/"); 218 * </pre> 219 * 220 * <h3>Cookie and window management</h3> 221 * 222 * <p>For obvious security reasons, your application has its own 223 * cache, cookie store etc.—it does not share the Browser 224 * application's data. Cookies are managed on a separate thread, so 225 * operations like index building don't block the UI 226 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 227 * if you want to use cookies in your application. 228 * </p> 229 * 230 * <p>By default, requests by the HTML to open new windows are 231 * ignored. This is true whether they be opened by JavaScript or by 232 * the target attribute on a link. You can customize your 233 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 234 * and render them in whatever manner you want.</p> 235 * 236 * <p>The standard behavior for an Activity is to be destroyed and 237 * recreated when the device orientation or any other configuration changes. This will cause 238 * the WebView to reload the current page. If you don't want that, you 239 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 240 * changes, and then just leave the WebView alone. It'll automatically 241 * re-orient itself as appropriate. Read <a 242 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 243 * more information about how to handle configuration changes during runtime.</p> 244 * 245 * 246 * <h3>Building web pages to support different screen densities</h3> 247 * 248 * <p>The screen density of a device is based on the screen resolution. A screen with low density 249 * has fewer available pixels per inch, where a screen with high density 250 * has more — sometimes significantly more — pixels per inch. The density of a 251 * screen is important because, other things being equal, a UI element (such as a button) whose 252 * height and width are defined in terms of screen pixels will appear larger on the lower density 253 * screen and smaller on the higher density screen. 254 * For simplicity, Android collapses all actual screen densities into three generalized densities: 255 * high, medium, and low.</p> 256 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 257 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 258 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 259 * are bigger). 260 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 261 * you (as a web developer) target screens with different screen densities.</p> 262 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 263 * <ul> 264 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 265 * default scaling factor used for the current device. For example, if the value of {@code 266 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 267 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 268 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 269 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 270 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 271 * (discussed below), then you can stop this default scaling behavior.</li> 272 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 273 * densities for which this style sheet is to be used. The corresponding value should be either 274 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 275 * density, or high density screens, respectively. For example: 276 * <pre> 277 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 278 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 279 * which is the high density pixel ratio.</p> 280 * </li> 281 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 282 * this to specify the target density for which the web page is designed, using the following 283 * values: 284 * <ul> 285 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 286 * occurs.</li> 287 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 288 * as appropriate.</li> 289 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 290 * low density screens scale down. This is also the default behavior.</li> 291 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 292 * as appropriate.</li> 293 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 294 * values are 70-400).</li> 295 * </ul> 296 * <p>Here's an example meta tag to specify the target density:</p> 297 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 298 * </ul> 299 * <p>If you want to modify your web page for different densities, by using the {@code 300 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 301 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 302 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 303 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 304 * 305 * 306 */ 307@Widget 308public class WebView extends AbsoluteLayout 309 implements ViewTreeObserver.OnGlobalFocusChangeListener, 310 ViewGroup.OnHierarchyChangeListener { 311 312 // enable debug output for drag trackers 313 private static final boolean DEBUG_DRAG_TRACKER = false; 314 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 315 // the screen all-the-time. Good for profiling our drawing code 316 static private final boolean AUTO_REDRAW_HACK = false; 317 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 318 private boolean mAutoRedraw; 319 320 static final String LOGTAG = "webview"; 321 322 private ZoomManager mZoomManager; 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 } 921 922 /* 923 * The intent receiver that monitors for changes to relevant packages (e.g., 924 * sGoogleApps) and notifies WebViewCore of their existence. 925 */ 926 private static BroadcastReceiver sPackageInstallationReceiver = null; 927 928 /* 929 * A set of Google packages we monitor for the 930 * navigator.isApplicationInstalled() API. Add additional packages as 931 * needed. 932 */ 933 private static Set<String> sGoogleApps; 934 static { 935 sGoogleApps = new HashSet<String>(); 936 sGoogleApps.add("com.google.android.youtube"); 937 } 938 939 private void setupPackageListener(Context context) { 940 941 /* 942 * we must synchronize the instance check and the creation of the 943 * receiver to ensure that only ONE receiver exists for all WebView 944 * instances. 945 */ 946 synchronized (WebView.class) { 947 948 // if the receiver already exists then we do not need to register it 949 // again 950 if (sPackageInstallationReceiver != null) { 951 return; 952 } 953 954 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 955 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 956 filter.addDataScheme("package"); 957 sPackageInstallationReceiver = new BroadcastReceiver() { 958 959 @Override 960 public void onReceive(Context context, Intent intent) { 961 final String action = intent.getAction(); 962 final String packageName = intent.getData().getSchemeSpecificPart(); 963 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 964 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 965 // if it is replacing, refreshPlugins() when adding 966 return; 967 } 968 969 if (sGoogleApps.contains(packageName) && mWebViewCore != null) { 970 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 971 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 972 } else { 973 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 974 } 975 } 976 977 PluginManager pm = PluginManager.getInstance(context); 978 if (pm.containsPluginPermissionAndSignatures(packageName)) { 979 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 980 } 981 } 982 }; 983 984 context.getApplicationContext().registerReceiver(sPackageInstallationReceiver, filter); 985 } 986 987 // check if any of the monitored apps are already installed 988 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 989 990 @Override 991 protected Set<String> doInBackground(Void... unused) { 992 Set<String> installedPackages = new HashSet<String>(); 993 PackageManager pm = mContext.getPackageManager(); 994 List<PackageInfo> packages = pm.getInstalledPackages(0); 995 for (PackageInfo p : packages) { 996 if (sGoogleApps.contains(p.packageName)) { 997 installedPackages.add(p.packageName); 998 } 999 } 1000 return installedPackages; 1001 } 1002 1003 // Executes on the UI thread 1004 @Override 1005 protected void onPostExecute(Set<String> installedPackages) { 1006 if (mWebViewCore != null) { 1007 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1008 } 1009 } 1010 }; 1011 task.execute(); 1012 } 1013 1014 void updateMultiTouchSupport(Context context) { 1015 mZoomManager.updateMultiTouchSupport(context); 1016 } 1017 1018 private void init() { 1019 setWillNotDraw(false); 1020 setFocusable(true); 1021 setFocusableInTouchMode(true); 1022 setClickable(true); 1023 setLongClickable(true); 1024 1025 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1026 int slop = configuration.getScaledTouchSlop(); 1027 mTouchSlopSquare = slop * slop; 1028 mMinLockSnapReverseDistance = slop; 1029 slop = configuration.getScaledDoubleTapSlop(); 1030 mDoubleTapSlopSquare = slop * slop; 1031 final float density = getContext().getResources().getDisplayMetrics().density; 1032 // use one line height, 16 based on our current default font, for how 1033 // far we allow a touch be away from the edge of a link 1034 mNavSlop = (int) (16 * density); 1035 mZoomManager.init(density); 1036 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1037 1038 // Compute the inverse of the density squared. 1039 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1040 } 1041 1042 /** 1043 * Exposes accessibility APIs to JavaScript by appending them to the JavaScript 1044 * interfaces map provided by the WebView client. In case of conflicting 1045 * alias with the one of the accessibility API the user specified one wins. 1046 * 1047 * @param javascriptInterfaces A map with interfaces to be exposed to JavaScript. 1048 */ 1049 private void exposeAccessibilityJavaScriptApi(Map<String, Object> javascriptInterfaces) { 1050 if (javascriptInterfaces.containsKey(ALIAS_ACCESSIBILITY_JS_INTERFACE)) { 1051 Log.w(LOGTAG, "JavaScript interface mapped to \"" + ALIAS_ACCESSIBILITY_JS_INTERFACE 1052 + "\" overrides the accessibility API JavaScript interface. No accessibility" 1053 + "API will be exposed to JavaScript!"); 1054 return; 1055 } 1056 1057 // expose the TTS for now ... 1058 javascriptInterfaces.put(ALIAS_ACCESSIBILITY_JS_INTERFACE, 1059 new TextToSpeech(getContext(), null)); 1060 } 1061 1062 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1063 final float density = mContext.getResources().getDisplayMetrics().density 1064 * 100 / zoomDensity; 1065 mNavSlop = (int) (16 * density); 1066 mZoomManager.updateDefaultZoomDensity(density); 1067 } 1068 1069 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1070 String password, final Message resumeMsg) { 1071 boolean rVal = false; 1072 if (resumeMsg == null) { 1073 // null resumeMsg implies saving password silently 1074 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1075 } else { 1076 final Message remember = mPrivateHandler.obtainMessage( 1077 REMEMBER_PASSWORD); 1078 remember.getData().putString("host", schemePlusHost); 1079 remember.getData().putString("username", username); 1080 remember.getData().putString("password", password); 1081 remember.obj = resumeMsg; 1082 1083 final Message neverRemember = mPrivateHandler.obtainMessage( 1084 NEVER_REMEMBER_PASSWORD); 1085 neverRemember.getData().putString("host", schemePlusHost); 1086 neverRemember.getData().putString("username", username); 1087 neverRemember.getData().putString("password", password); 1088 neverRemember.obj = resumeMsg; 1089 1090 new AlertDialog.Builder(getContext()) 1091 .setTitle(com.android.internal.R.string.save_password_label) 1092 .setMessage(com.android.internal.R.string.save_password_message) 1093 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1094 new DialogInterface.OnClickListener() { 1095 public void onClick(DialogInterface dialog, int which) { 1096 resumeMsg.sendToTarget(); 1097 } 1098 }) 1099 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1100 new DialogInterface.OnClickListener() { 1101 public void onClick(DialogInterface dialog, int which) { 1102 remember.sendToTarget(); 1103 } 1104 }) 1105 .setNegativeButton(com.android.internal.R.string.save_password_never, 1106 new DialogInterface.OnClickListener() { 1107 public void onClick(DialogInterface dialog, int which) { 1108 neverRemember.sendToTarget(); 1109 } 1110 }) 1111 .setOnCancelListener(new OnCancelListener() { 1112 public void onCancel(DialogInterface dialog) { 1113 resumeMsg.sendToTarget(); 1114 } 1115 }).show(); 1116 // Return true so that WebViewCore will pause while the dialog is 1117 // up. 1118 rVal = true; 1119 } 1120 return rVal; 1121 } 1122 1123 @Override 1124 public void setScrollBarStyle(int style) { 1125 if (style == View.SCROLLBARS_INSIDE_INSET 1126 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1127 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1128 } else { 1129 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1130 } 1131 super.setScrollBarStyle(style); 1132 } 1133 1134 /** 1135 * Specify whether the horizontal scrollbar has overlay style. 1136 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1137 */ 1138 public void setHorizontalScrollbarOverlay(boolean overlay) { 1139 mOverlayHorizontalScrollbar = overlay; 1140 } 1141 1142 /** 1143 * Specify whether the vertical scrollbar has overlay style. 1144 * @param overlay TRUE if vertical scrollbar should have overlay style. 1145 */ 1146 public void setVerticalScrollbarOverlay(boolean overlay) { 1147 mOverlayVerticalScrollbar = overlay; 1148 } 1149 1150 /** 1151 * Return whether horizontal scrollbar has overlay style 1152 * @return TRUE if horizontal scrollbar has overlay style. 1153 */ 1154 public boolean overlayHorizontalScrollbar() { 1155 return mOverlayHorizontalScrollbar; 1156 } 1157 1158 /** 1159 * Return whether vertical scrollbar has overlay style 1160 * @return TRUE if vertical scrollbar has overlay style. 1161 */ 1162 public boolean overlayVerticalScrollbar() { 1163 return mOverlayVerticalScrollbar; 1164 } 1165 1166 /* 1167 * Return the width of the view where the content of WebView should render 1168 * to. 1169 * Note: this can be called from WebCoreThread. 1170 */ 1171 /* package */ int getViewWidth() { 1172 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1173 return getWidth(); 1174 } else { 1175 return getWidth() - getVerticalScrollbarWidth(); 1176 } 1177 } 1178 1179 /* 1180 * returns the height of the titlebarview (if any). Does not care about 1181 * scrolling 1182 */ 1183 int getTitleHeight() { 1184 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1185 } 1186 1187 /* 1188 * Return the amount of the titlebarview (if any) that is visible 1189 * 1190 * @hide 1191 */ 1192 public int getVisibleTitleHeight() { 1193 return Math.max(getTitleHeight() - mScrollY, 0); 1194 } 1195 1196 /* 1197 * Return the height of the view where the content of WebView should render 1198 * to. Note that this excludes mTitleBar, if there is one. 1199 * Note: this can be called from WebCoreThread. 1200 */ 1201 /* package */ int getViewHeight() { 1202 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1203 } 1204 1205 private int getViewHeightWithTitle() { 1206 int height = getHeight(); 1207 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1208 height -= getHorizontalScrollbarHeight(); 1209 } 1210 return height; 1211 } 1212 1213 /** 1214 * @return The SSL certificate for the main top-level page or null if 1215 * there is no certificate (the site is not secure). 1216 */ 1217 public SslCertificate getCertificate() { 1218 return mCertificate; 1219 } 1220 1221 /** 1222 * Sets the SSL certificate for the main top-level page. 1223 */ 1224 public void setCertificate(SslCertificate certificate) { 1225 if (DebugFlags.WEB_VIEW) { 1226 Log.v(LOGTAG, "setCertificate=" + certificate); 1227 } 1228 // here, the certificate can be null (if the site is not secure) 1229 mCertificate = certificate; 1230 } 1231 1232 //------------------------------------------------------------------------- 1233 // Methods called by activity 1234 //------------------------------------------------------------------------- 1235 1236 /** 1237 * Save the username and password for a particular host in the WebView's 1238 * internal database. 1239 * @param host The host that required the credentials. 1240 * @param username The username for the given host. 1241 * @param password The password for the given host. 1242 */ 1243 public void savePassword(String host, String username, String password) { 1244 mDatabase.setUsernamePassword(host, username, password); 1245 } 1246 1247 /** 1248 * Set the HTTP authentication credentials for a given host and realm. 1249 * 1250 * @param host The host for the credentials. 1251 * @param realm The realm for the credentials. 1252 * @param username The username for the password. If it is null, it means 1253 * password can't be saved. 1254 * @param password The password 1255 */ 1256 public void setHttpAuthUsernamePassword(String host, String realm, 1257 String username, String password) { 1258 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1259 } 1260 1261 /** 1262 * Retrieve the HTTP authentication username and password for a given 1263 * host & realm pair 1264 * 1265 * @param host The host for which the credentials apply. 1266 * @param realm The realm for which the credentials apply. 1267 * @return String[] if found, String[0] is username, which can be null and 1268 * String[1] is password. Return null if it can't find anything. 1269 */ 1270 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1271 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1272 } 1273 1274 /** 1275 * Remove Find or Select ActionModes, if active. 1276 */ 1277 private void clearActionModes() { 1278 if (mSelectCallback != null) { 1279 mSelectCallback.finish(); 1280 } 1281 if (mFindCallback != null) { 1282 mFindCallback.finish(); 1283 } 1284 } 1285 1286 /** 1287 * Called to clear state when moving from one page to another, or changing 1288 * in some other way that makes elements associated with the current page 1289 * (such as WebTextView or ActionModes) no longer relevant. 1290 */ 1291 private void clearHelpers() { 1292 clearTextEntry(); 1293 clearActionModes(); 1294 dismissFullScreenMode(); 1295 } 1296 1297 /** 1298 * Destroy the internal state of the WebView. This method should be called 1299 * after the WebView has been removed from the view system. No other 1300 * methods may be called on a WebView after destroy. 1301 */ 1302 public void destroy() { 1303 clearHelpers(); 1304 1305 if (mWebViewCore != null) { 1306 // Set the handlers to null before destroying WebViewCore so no 1307 // more messages will be posted. 1308 mCallbackProxy.setWebViewClient(null); 1309 mCallbackProxy.setWebChromeClient(null); 1310 // Tell WebViewCore to destroy itself 1311 synchronized (this) { 1312 WebViewCore webViewCore = mWebViewCore; 1313 mWebViewCore = null; // prevent using partial webViewCore 1314 webViewCore.destroy(); 1315 } 1316 // Remove any pending messages that might not be serviced yet. 1317 mPrivateHandler.removeCallbacksAndMessages(null); 1318 mCallbackProxy.removeCallbacksAndMessages(null); 1319 // Wake up the WebCore thread just in case it is waiting for a 1320 // javascript dialog. 1321 synchronized (mCallbackProxy) { 1322 mCallbackProxy.notify(); 1323 } 1324 } 1325 if (mNativeClass != 0) { 1326 nativeDestroy(); 1327 mNativeClass = 0; 1328 } 1329 } 1330 1331 /** 1332 * Enables platform notifications of data state and proxy changes. 1333 */ 1334 public static void enablePlatformNotifications() { 1335 Network.enablePlatformNotifications(); 1336 } 1337 1338 /** 1339 * If platform notifications are enabled, this should be called 1340 * from the Activity's onPause() or onStop(). 1341 */ 1342 public static void disablePlatformNotifications() { 1343 Network.disablePlatformNotifications(); 1344 } 1345 1346 /** 1347 * Sets JavaScript engine flags. 1348 * 1349 * @param flags JS engine flags in a String 1350 * 1351 * @hide pending API solidification 1352 */ 1353 public void setJsFlags(String flags) { 1354 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1355 } 1356 1357 /** 1358 * Inform WebView of the network state. This is used to set 1359 * the javascript property window.navigator.isOnline and 1360 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1361 * @param networkUp boolean indicating if network is available 1362 */ 1363 public void setNetworkAvailable(boolean networkUp) { 1364 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1365 networkUp ? 1 : 0, 0); 1366 } 1367 1368 /** 1369 * Inform WebView about the current network type. 1370 * {@hide} 1371 */ 1372 public void setNetworkType(String type, String subtype) { 1373 Map<String, String> map = new HashMap<String, String>(); 1374 map.put("type", type); 1375 map.put("subtype", subtype); 1376 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1377 } 1378 /** 1379 * Save the state of this WebView used in 1380 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1381 * method no longer stores the display data for this WebView. The previous 1382 * behavior could potentially leak files if {@link #restoreState} was never 1383 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1384 * and restoring the display data. 1385 * @param outState The Bundle to store the WebView state. 1386 * @return The same copy of the back/forward list used to save the state. If 1387 * saveState fails, the returned list will be null. 1388 * @see #savePicture 1389 * @see #restorePicture 1390 */ 1391 public WebBackForwardList saveState(Bundle outState) { 1392 if (outState == null) { 1393 return null; 1394 } 1395 // We grab a copy of the back/forward list because a client of WebView 1396 // may have invalidated the history list by calling clearHistory. 1397 WebBackForwardList list = copyBackForwardList(); 1398 final int currentIndex = list.getCurrentIndex(); 1399 final int size = list.getSize(); 1400 // We should fail saving the state if the list is empty or the index is 1401 // not in a valid range. 1402 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1403 return null; 1404 } 1405 outState.putInt("index", currentIndex); 1406 // FIXME: This should just be a byte[][] instead of ArrayList but 1407 // Parcel.java does not have the code to handle multi-dimensional 1408 // arrays. 1409 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1410 for (int i = 0; i < size; i++) { 1411 WebHistoryItem item = list.getItemAtIndex(i); 1412 if (null == item) { 1413 // FIXME: this shouldn't happen 1414 // need to determine how item got set to null 1415 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1416 return null; 1417 } 1418 byte[] data = item.getFlattenedData(); 1419 if (data == null) { 1420 // It would be very odd to not have any data for a given history 1421 // item. And we will fail to rebuild the history list without 1422 // flattened data. 1423 return null; 1424 } 1425 history.add(data); 1426 } 1427 outState.putSerializable("history", history); 1428 if (mCertificate != null) { 1429 outState.putBundle("certificate", 1430 SslCertificate.saveState(mCertificate)); 1431 } 1432 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1433 mZoomManager.saveZoomState(outState); 1434 return list; 1435 } 1436 1437 /** 1438 * Save the current display data to the Bundle given. Used in conjunction 1439 * with {@link #saveState}. 1440 * @param b A Bundle to store the display data. 1441 * @param dest The file to store the serialized picture data. Will be 1442 * overwritten with this WebView's picture data. 1443 * @return True if the picture was successfully saved. 1444 */ 1445 public boolean savePicture(Bundle b, final File dest) { 1446 if (dest == null || b == null) { 1447 return false; 1448 } 1449 final Picture p = capturePicture(); 1450 // Use a temporary file while writing to ensure the destination file 1451 // contains valid data. 1452 final File temp = new File(dest.getPath() + ".writing"); 1453 new Thread(new Runnable() { 1454 public void run() { 1455 FileOutputStream out = null; 1456 try { 1457 out = new FileOutputStream(temp); 1458 p.writeToStream(out); 1459 // Writing the picture succeeded, rename the temporary file 1460 // to the destination. 1461 temp.renameTo(dest); 1462 } catch (Exception e) { 1463 // too late to do anything about it. 1464 } finally { 1465 if (out != null) { 1466 try { 1467 out.close(); 1468 } catch (Exception e) { 1469 // Can't do anything about that 1470 } 1471 } 1472 temp.delete(); 1473 } 1474 } 1475 }).start(); 1476 // now update the bundle 1477 b.putInt("scrollX", mScrollX); 1478 b.putInt("scrollY", mScrollY); 1479 mZoomManager.saveZoomState(b); 1480 return true; 1481 } 1482 1483 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1484 int sx = b.getInt("scrollX", 0); 1485 int sy = b.getInt("scrollY", 0); 1486 1487 mDrawHistory = true; 1488 mHistoryPicture = p; 1489 mScrollX = sx; 1490 mScrollY = sy; 1491 mZoomManager.restoreZoomState(b); 1492 final float scale = mZoomManager.getScale(); 1493 mHistoryWidth = Math.round(p.getWidth() * scale); 1494 mHistoryHeight = Math.round(p.getHeight() * scale); 1495 1496 invalidate(); 1497 } 1498 1499 /** 1500 * Restore the display data that was save in {@link #savePicture}. Used in 1501 * conjunction with {@link #restoreState}. 1502 * @param b A Bundle containing the saved display data. 1503 * @param src The file where the picture data was stored. 1504 * @return True if the picture was successfully restored. 1505 */ 1506 public boolean restorePicture(Bundle b, File src) { 1507 if (src == null || b == null) { 1508 return false; 1509 } 1510 if (!src.exists()) { 1511 return false; 1512 } 1513 try { 1514 final FileInputStream in = new FileInputStream(src); 1515 final Bundle copy = new Bundle(b); 1516 new Thread(new Runnable() { 1517 public void run() { 1518 try { 1519 final Picture p = Picture.createFromStream(in); 1520 if (p != null) { 1521 // Post a runnable on the main thread to update the 1522 // history picture fields. 1523 mPrivateHandler.post(new Runnable() { 1524 public void run() { 1525 restoreHistoryPictureFields(p, copy); 1526 } 1527 }); 1528 } 1529 } finally { 1530 try { 1531 in.close(); 1532 } catch (Exception e) { 1533 // Nothing we can do now. 1534 } 1535 } 1536 } 1537 }).start(); 1538 } catch (FileNotFoundException e){ 1539 e.printStackTrace(); 1540 } 1541 return true; 1542 } 1543 1544 /** 1545 * Restore the state of this WebView from the given map used in 1546 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1547 * be called to restore the state of the WebView before using the object. If 1548 * it is called after the WebView has had a chance to build state (load 1549 * pages, create a back/forward list, etc.) there may be undesirable 1550 * side-effects. Please note that this method no longer restores the 1551 * display data for this WebView. See {@link #savePicture} and {@link 1552 * #restorePicture} for saving and restoring the display data. 1553 * @param inState The incoming Bundle of state. 1554 * @return The restored back/forward list or null if restoreState failed. 1555 * @see #savePicture 1556 * @see #restorePicture 1557 */ 1558 public WebBackForwardList restoreState(Bundle inState) { 1559 WebBackForwardList returnList = null; 1560 if (inState == null) { 1561 return returnList; 1562 } 1563 if (inState.containsKey("index") && inState.containsKey("history")) { 1564 mCertificate = SslCertificate.restoreState( 1565 inState.getBundle("certificate")); 1566 1567 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1568 final int index = inState.getInt("index"); 1569 // We can't use a clone of the list because we need to modify the 1570 // shared copy, so synchronize instead to prevent concurrent 1571 // modifications. 1572 synchronized (list) { 1573 final List<byte[]> history = 1574 (List<byte[]>) inState.getSerializable("history"); 1575 final int size = history.size(); 1576 // Check the index bounds so we don't crash in native code while 1577 // restoring the history index. 1578 if (index < 0 || index >= size) { 1579 return null; 1580 } 1581 for (int i = 0; i < size; i++) { 1582 byte[] data = history.remove(0); 1583 if (data == null) { 1584 // If we somehow have null data, we cannot reconstruct 1585 // the item and thus our history list cannot be rebuilt. 1586 return null; 1587 } 1588 WebHistoryItem item = new WebHistoryItem(data); 1589 list.addHistoryItem(item); 1590 } 1591 // Grab the most recent copy to return to the caller. 1592 returnList = copyBackForwardList(); 1593 // Update the copy to have the correct index. 1594 returnList.setCurrentIndex(index); 1595 } 1596 // Restore private browsing setting. 1597 if (inState.getBoolean("privateBrowsingEnabled")) { 1598 getSettings().setPrivateBrowsingEnabled(true); 1599 } 1600 mZoomManager.restoreZoomState(inState); 1601 // Remove all pending messages because we are restoring previous 1602 // state. 1603 mWebViewCore.removeMessages(); 1604 // Send a restore state message. 1605 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1606 } 1607 return returnList; 1608 } 1609 1610 /** 1611 * Load the given url with the extra headers. 1612 * @param url The url of the resource to load. 1613 * @param extraHeaders The extra headers sent with this url. This should not 1614 * include the common headers like "user-agent". If it does, it 1615 * will be replaced by the intrinsic value of the WebView. 1616 */ 1617 public void loadUrl(String url, Map<String, String> extraHeaders) { 1618 switchOutDrawHistory(); 1619 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1620 arg.mUrl = url; 1621 arg.mExtraHeaders = extraHeaders; 1622 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1623 clearHelpers(); 1624 } 1625 1626 /** 1627 * Load the given url. 1628 * @param url The url of the resource to load. 1629 */ 1630 public void loadUrl(String url) { 1631 if (url == null) { 1632 return; 1633 } 1634 loadUrl(url, null); 1635 } 1636 1637 /** 1638 * Load the url with postData using "POST" method into the WebView. If url 1639 * is not a network url, it will be loaded with {link 1640 * {@link #loadUrl(String)} instead. 1641 * 1642 * @param url The url of the resource to load. 1643 * @param postData The data will be passed to "POST" request. 1644 */ 1645 public void postUrl(String url, byte[] postData) { 1646 if (URLUtil.isNetworkUrl(url)) { 1647 switchOutDrawHistory(); 1648 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1649 arg.mUrl = url; 1650 arg.mPostData = postData; 1651 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1652 clearHelpers(); 1653 } else { 1654 loadUrl(url); 1655 } 1656 } 1657 1658 /** 1659 * Load the given data into the WebView. This will load the data into 1660 * WebView using the data: scheme. Content loaded through this mechanism 1661 * does not have the ability to load content from the network. 1662 * @param data A String of data in the given encoding. The date must 1663 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1664 * %27, %3f respectively. 1665 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1666 * @param encoding The encoding of the data. i.e. utf-8, base64 1667 */ 1668 public void loadData(String data, String mimeType, String encoding) { 1669 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1670 } 1671 1672 /** 1673 * Load the given data into the WebView, use the provided URL as the base 1674 * URL for the content. The base URL is the URL that represents the page 1675 * that is loaded through this interface. As such, it is used to resolve any 1676 * relative URLs. The historyUrl is used for the history entry. 1677 * <p> 1678 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1679 * files through "file:///android_asset/" for the sub resources is more 1680 * restricted. If you provide null or empty string as baseUrl, you won't be 1681 * able to access asset files. If the baseUrl is anything other than 1682 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1683 * sub resources. 1684 * 1685 * @param baseUrl Url to resolve relative paths with, if null defaults to 1686 * "about:blank" 1687 * @param data A String of data in the given encoding. 1688 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1689 * defaults to "text/html" 1690 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1691 * @param historyUrl URL to use as the history entry. Can be null. 1692 */ 1693 public void loadDataWithBaseURL(String baseUrl, String data, 1694 String mimeType, String encoding, String historyUrl) { 1695 1696 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1697 loadData(data, mimeType, encoding); 1698 return; 1699 } 1700 switchOutDrawHistory(); 1701 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1702 arg.mBaseUrl = baseUrl; 1703 arg.mData = data; 1704 arg.mMimeType = mimeType; 1705 arg.mEncoding = encoding; 1706 arg.mHistoryUrl = historyUrl; 1707 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1708 clearHelpers(); 1709 } 1710 1711 /** 1712 * Saves the current view as a web archive. 1713 * 1714 * @param filename The filename where the archive should be placed. 1715 */ 1716 public void saveWebArchive(String filename) { 1717 saveWebArchive(filename, false, null); 1718 } 1719 1720 /* package */ static class SaveWebArchiveMessage { 1721 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1722 mBasename = basename; 1723 mAutoname = autoname; 1724 mCallback = callback; 1725 } 1726 1727 /* package */ final String mBasename; 1728 /* package */ final boolean mAutoname; 1729 /* package */ final ValueCallback<String> mCallback; 1730 /* package */ String mResultFile; 1731 } 1732 1733 /** 1734 * Saves the current view as a web archive. 1735 * 1736 * @param basename The filename where the archive should be placed. 1737 * @param autoname If false, takes basename to be a file. If true, basename 1738 * is assumed to be a directory in which a filename will be 1739 * chosen according to the url of the current page. 1740 * @param callback Called after the web archive has been saved. The 1741 * parameter for onReceiveValue will either be the filename 1742 * under which the file was saved, or null if saving the 1743 * file failed. 1744 */ 1745 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1746 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1747 new SaveWebArchiveMessage(basename, autoname, callback)); 1748 } 1749 1750 /** 1751 * Stop the current load. 1752 */ 1753 public void stopLoading() { 1754 // TODO: should we clear all the messages in the queue before sending 1755 // STOP_LOADING? 1756 switchOutDrawHistory(); 1757 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1758 } 1759 1760 /** 1761 * Reload the current url. 1762 */ 1763 public void reload() { 1764 clearHelpers(); 1765 switchOutDrawHistory(); 1766 mWebViewCore.sendMessage(EventHub.RELOAD); 1767 } 1768 1769 /** 1770 * Return true if this WebView has a back history item. 1771 * @return True iff this WebView has a back history item. 1772 */ 1773 public boolean canGoBack() { 1774 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1775 synchronized (l) { 1776 if (l.getClearPending()) { 1777 return false; 1778 } else { 1779 return l.getCurrentIndex() > 0; 1780 } 1781 } 1782 } 1783 1784 /** 1785 * Go back in the history of this WebView. 1786 */ 1787 public void goBack() { 1788 goBackOrForward(-1); 1789 } 1790 1791 /** 1792 * Return true if this WebView has a forward history item. 1793 * @return True iff this Webview has a forward history item. 1794 */ 1795 public boolean canGoForward() { 1796 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1797 synchronized (l) { 1798 if (l.getClearPending()) { 1799 return false; 1800 } else { 1801 return l.getCurrentIndex() < l.getSize() - 1; 1802 } 1803 } 1804 } 1805 1806 /** 1807 * Go forward in the history of this WebView. 1808 */ 1809 public void goForward() { 1810 goBackOrForward(1); 1811 } 1812 1813 /** 1814 * Return true if the page can go back or forward the given 1815 * number of steps. 1816 * @param steps The negative or positive number of steps to move the 1817 * history. 1818 */ 1819 public boolean canGoBackOrForward(int steps) { 1820 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1821 synchronized (l) { 1822 if (l.getClearPending()) { 1823 return false; 1824 } else { 1825 int newIndex = l.getCurrentIndex() + steps; 1826 return newIndex >= 0 && newIndex < l.getSize(); 1827 } 1828 } 1829 } 1830 1831 /** 1832 * Go to the history item that is the number of steps away from 1833 * the current item. Steps is negative if backward and positive 1834 * if forward. 1835 * @param steps The number of steps to take back or forward in the back 1836 * forward list. 1837 */ 1838 public void goBackOrForward(int steps) { 1839 goBackOrForward(steps, false); 1840 } 1841 1842 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1843 if (steps != 0) { 1844 clearHelpers(); 1845 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1846 ignoreSnapshot ? 1 : 0); 1847 } 1848 } 1849 1850 /** 1851 * Returns true if private browsing is enabled in this WebView. 1852 */ 1853 public boolean isPrivateBrowsingEnabled() { 1854 return getSettings().isPrivateBrowsingEnabled(); 1855 } 1856 1857 private void startPrivateBrowsing() { 1858 boolean wasPrivateBrowsingEnabled = isPrivateBrowsingEnabled(); 1859 1860 getSettings().setPrivateBrowsingEnabled(true); 1861 1862 if (!wasPrivateBrowsingEnabled) { 1863 loadUrl("browser:incognito"); 1864 } 1865 } 1866 1867 /** 1868 * Deletes any files that were created as a part of the last private 1869 * browsing session and clears any internal state associated with that 1870 * session. The consequences of calling this method while a private 1871 * browsing session is active are unspecified. 1872 * @param context The same context which was used to create the private 1873 * browsing WebView. 1874 * @return True if the private browsing files were successfully deleted, 1875 * false otherwise. 1876 * @hide pending API council approval. 1877 */ 1878 public static boolean cleanupPrivateBrowsingFiles(Context context) { 1879 // It seems wrong that we have to pass the storage locations here, given 1880 // that the storage files are created native-side in WebRequestContext 1881 // (albeit using a dumb getter on BrowserFrame to get the paths from 1882 // Java). It looks like this is required because we may need to call 1883 // this method before the BrowserFrame has been set up. 1884 // TODO: Investigate whether this can be avoided. 1885 return nativeCleanupPrivateBrowsingFiles(context.getDatabasePath("dummy").getParent(), 1886 context.getCacheDir().getAbsolutePath()); 1887 } 1888 1889 private static native boolean nativeCleanupPrivateBrowsingFiles(String databaseDirectory, 1890 String cacheDirectory); 1891 1892 private boolean extendScroll(int y) { 1893 int finalY = mScroller.getFinalY(); 1894 int newY = pinLocY(finalY + y); 1895 if (newY == finalY) return false; 1896 mScroller.setFinalY(newY); 1897 mScroller.extendDuration(computeDuration(0, y)); 1898 return true; 1899 } 1900 1901 /** 1902 * Scroll the contents of the view up by half the view size 1903 * @param top true to jump to the top of the page 1904 * @return true if the page was scrolled 1905 */ 1906 public boolean pageUp(boolean top) { 1907 if (mNativeClass == 0) { 1908 return false; 1909 } 1910 nativeClearCursor(); // start next trackball movement from page edge 1911 if (top) { 1912 // go to the top of the document 1913 return pinScrollTo(mScrollX, 0, true, 0); 1914 } 1915 // Page up 1916 int h = getHeight(); 1917 int y; 1918 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1919 y = -h + PAGE_SCROLL_OVERLAP; 1920 } else { 1921 y = -h / 2; 1922 } 1923 mUserScroll = true; 1924 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1925 : extendScroll(y); 1926 } 1927 1928 /** 1929 * Scroll the contents of the view down by half the page size 1930 * @param bottom true to jump to bottom of page 1931 * @return true if the page was scrolled 1932 */ 1933 public boolean pageDown(boolean bottom) { 1934 if (mNativeClass == 0) { 1935 return false; 1936 } 1937 nativeClearCursor(); // start next trackball movement from page edge 1938 if (bottom) { 1939 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1940 } 1941 // Page down. 1942 int h = getHeight(); 1943 int y; 1944 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1945 y = h - PAGE_SCROLL_OVERLAP; 1946 } else { 1947 y = h / 2; 1948 } 1949 mUserScroll = true; 1950 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1951 : extendScroll(y); 1952 } 1953 1954 /** 1955 * Clear the view so that onDraw() will draw nothing but white background, 1956 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1957 */ 1958 public void clearView() { 1959 mContentWidth = 0; 1960 mContentHeight = 0; 1961 if (mNativeClass != 0) nativeSetBaseLayer(0); 1962 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1963 } 1964 1965 /** 1966 * Return a new picture that captures the current display of the webview. 1967 * This is a copy of the display, and will be unaffected if the webview 1968 * later loads a different URL. 1969 * 1970 * @return a picture containing the current contents of the view. Note this 1971 * picture is of the entire document, and is not restricted to the 1972 * bounds of the view. 1973 */ 1974 public Picture capturePicture() { 1975 Picture result = new Picture(); 1976 nativeCopyBaseContentToPicture(result); 1977 return result; 1978 } 1979 1980 /** 1981 * Return true if the browser is displaying a TextView for text input. 1982 */ 1983 private boolean inEditingMode() { 1984 return mWebTextView != null && mWebTextView.getParent() != null; 1985 } 1986 1987 /** 1988 * Remove the WebTextView. 1989 */ 1990 private void clearTextEntry() { 1991 if (inEditingMode()) { 1992 mWebTextView.remove(); 1993 } else { 1994 // The keyboard may be open with the WebView as the served view 1995 hideSoftKeyboard(); 1996 } 1997 } 1998 1999 /** 2000 * Return the current scale of the WebView 2001 * @return The current scale. 2002 */ 2003 public float getScale() { 2004 return mZoomManager.getScale(); 2005 } 2006 2007 /** 2008 * Set the initial scale for the WebView. 0 means default. If 2009 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2010 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2011 * WebView starts will this value as initial scale. 2012 * 2013 * @param scaleInPercent The initial scale in percent. 2014 */ 2015 public void setInitialScale(int scaleInPercent) { 2016 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2017 } 2018 2019 /** 2020 * Invoke the graphical zoom picker widget for this WebView. This will 2021 * result in the zoom widget appearing on the screen to control the zoom 2022 * level of this WebView. 2023 */ 2024 public void invokeZoomPicker() { 2025 if (!getSettings().supportZoom()) { 2026 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2027 return; 2028 } 2029 clearHelpers(); 2030 mZoomManager.invokeZoomPicker(); 2031 } 2032 2033 /** 2034 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2035 * is found and the anchor has a non-javascript url, the HitTestResult type 2036 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2037 * anchor does not have a url or if it is a javascript url, the type will 2038 * be UNKNOWN_TYPE and the url has to be retrieved through 2039 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2040 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2041 * the "extra" field. A type of 2042 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2043 * a child node. If a phone number is found, the HitTestResult type is set 2044 * to PHONE_TYPE and the phone number is set in the "extra" field of 2045 * HitTestResult. If a map address is found, the HitTestResult type is set 2046 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2047 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2048 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2049 * HitTestResult type is set to UNKNOWN_TYPE. 2050 */ 2051 public HitTestResult getHitTestResult() { 2052 if (mNativeClass == 0) { 2053 return null; 2054 } 2055 2056 HitTestResult result = new HitTestResult(); 2057 if (nativeHasCursorNode()) { 2058 if (nativeCursorIsTextInput()) { 2059 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2060 } else { 2061 String text = nativeCursorText(); 2062 if (text != null) { 2063 if (text.startsWith(SCHEME_TEL)) { 2064 result.setType(HitTestResult.PHONE_TYPE); 2065 result.setExtra(text.substring(SCHEME_TEL.length())); 2066 } else if (text.startsWith(SCHEME_MAILTO)) { 2067 result.setType(HitTestResult.EMAIL_TYPE); 2068 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2069 } else if (text.startsWith(SCHEME_GEO)) { 2070 result.setType(HitTestResult.GEO_TYPE); 2071 result.setExtra(URLDecoder.decode(text 2072 .substring(SCHEME_GEO.length()))); 2073 } else if (nativeCursorIsAnchor()) { 2074 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2075 result.setExtra(text); 2076 } 2077 } 2078 } 2079 } 2080 int type = result.getType(); 2081 if (type == HitTestResult.UNKNOWN_TYPE 2082 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2083 // Now check to see if it is an image. 2084 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2085 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2086 String text = nativeImageURI(contentX, contentY); 2087 if (text != null) { 2088 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2089 HitTestResult.IMAGE_TYPE : 2090 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2091 result.setExtra(text); 2092 } 2093 } 2094 return result; 2095 } 2096 2097 // Called by JNI when the DOM has changed the focus. Clear the focus so 2098 // that new keys will go to the newly focused field 2099 private void domChangedFocus() { 2100 if (inEditingMode()) { 2101 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2102 } 2103 } 2104 /** 2105 * Request the href of an anchor element due to getFocusNodePath returning 2106 * "href." If hrefMsg is null, this method returns immediately and does not 2107 * dispatch hrefMsg to its target. 2108 * 2109 * @param hrefMsg This message will be dispatched with the result of the 2110 * request as the data member with "url" as key. The result can 2111 * be null. 2112 */ 2113 // FIXME: API change required to change the name of this function. We now 2114 // look at the cursor node, and not the focus node. Also, what is 2115 // getFocusNodePath? 2116 public void requestFocusNodeHref(Message hrefMsg) { 2117 if (hrefMsg == null || mNativeClass == 0) { 2118 return; 2119 } 2120 if (nativeCursorIsAnchor()) { 2121 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2122 nativeCursorFramePointer(), nativeCursorNodePointer(), 2123 hrefMsg); 2124 } 2125 } 2126 2127 /** 2128 * Request the url of the image last touched by the user. msg will be sent 2129 * to its target with a String representing the url as its object. 2130 * 2131 * @param msg This message will be dispatched with the result of the request 2132 * as the data member with "url" as key. The result can be null. 2133 */ 2134 public void requestImageRef(Message msg) { 2135 if (0 == mNativeClass) return; // client isn't initialized 2136 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2137 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2138 String ref = nativeImageURI(contentX, contentY); 2139 Bundle data = msg.getData(); 2140 data.putString("url", ref); 2141 msg.setData(data); 2142 msg.sendToTarget(); 2143 } 2144 2145 static int pinLoc(int x, int viewMax, int docMax) { 2146// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2147 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2148 // pin the short document to the top/left of the screen 2149 x = 0; 2150// Log.d(LOGTAG, "--- center " + x); 2151 } else if (x < 0) { 2152 x = 0; 2153// Log.d(LOGTAG, "--- zero"); 2154 } else if (x + viewMax > docMax) { 2155 x = docMax - viewMax; 2156// Log.d(LOGTAG, "--- pin " + x); 2157 } 2158 return x; 2159 } 2160 2161 // Expects x in view coordinates 2162 int pinLocX(int x) { 2163 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 2164 } 2165 2166 // Expects y in view coordinates 2167 int pinLocY(int y) { 2168 return pinLoc(y, getViewHeightWithTitle(), 2169 computeVerticalScrollRange() + getTitleHeight()); 2170 } 2171 2172 /** 2173 * A title bar which is embedded in this WebView, and scrolls along with it 2174 * vertically, but not horizontally. 2175 */ 2176 private View mTitleBar; 2177 2178 /** 2179 * Since we draw the title bar ourselves, we removed the shadow from the 2180 * browser's activity. We do want a shadow at the bottom of the title bar, 2181 * or at the top of the screen if the title bar is not visible. This 2182 * drawable serves that purpose. 2183 */ 2184 private Drawable mTitleShadow; 2185 2186 /** 2187 * Add or remove a title bar to be embedded into the WebView, and scroll 2188 * along with it vertically, while remaining in view horizontally. Pass 2189 * null to remove the title bar from the WebView, and return to drawing 2190 * the WebView normally without translating to account for the title bar. 2191 * @hide 2192 */ 2193 public void setEmbeddedTitleBar(View v) { 2194 if (null == v) { 2195 // If one of our callbacks is holding onto the titlebar to replace 2196 // it when its ActionMode ends, remove it. 2197 if (mSelectCallback != null) { 2198 mSelectCallback.setTitleBar(null); 2199 } 2200 if (mFindCallback != null) { 2201 mFindCallback.setTitleBar(null); 2202 } 2203 } 2204 if (mTitleBar == v) return; 2205 if (mTitleBar != null) { 2206 removeView(mTitleBar); 2207 } 2208 if (null != v) { 2209 addView(v, new AbsoluteLayout.LayoutParams( 2210 ViewGroup.LayoutParams.MATCH_PARENT, 2211 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2212 if (mTitleShadow == null) { 2213 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 2214 com.android.internal.R.drawable.title_bar_shadow); 2215 } 2216 } 2217 mTitleBar = v; 2218 } 2219 2220 /** 2221 * Given a distance in view space, convert it to content space. Note: this 2222 * does not reflect translation, just scaling, so this should not be called 2223 * with coordinates, but should be called for dimensions like width or 2224 * height. 2225 */ 2226 private int viewToContentDimension(int d) { 2227 return Math.round(d * mZoomManager.getInvScale()); 2228 } 2229 2230 /** 2231 * Given an x coordinate in view space, convert it to content space. Also 2232 * may be used for absolute heights (such as for the WebTextView's 2233 * textSize, which is unaffected by the height of the title bar). 2234 */ 2235 /*package*/ int viewToContentX(int x) { 2236 return viewToContentDimension(x); 2237 } 2238 2239 /** 2240 * Given a y coordinate in view space, convert it to content space. 2241 * Takes into account the height of the title bar if there is one 2242 * embedded into the WebView. 2243 */ 2244 /*package*/ int viewToContentY(int y) { 2245 return viewToContentDimension(y - getTitleHeight()); 2246 } 2247 2248 /** 2249 * Given a x coordinate in view space, convert it to content space. 2250 * Returns the result as a float. 2251 */ 2252 private float viewToContentXf(int x) { 2253 return x * mZoomManager.getInvScale(); 2254 } 2255 2256 /** 2257 * Given a y coordinate in view space, convert it to content space. 2258 * Takes into account the height of the title bar if there is one 2259 * embedded into the WebView. Returns the result as a float. 2260 */ 2261 private float viewToContentYf(int y) { 2262 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2263 } 2264 2265 /** 2266 * Given a distance in content space, convert it to view space. Note: this 2267 * does not reflect translation, just scaling, so this should not be called 2268 * with coordinates, but should be called for dimensions like width or 2269 * height. 2270 */ 2271 /*package*/ int contentToViewDimension(int d) { 2272 return Math.round(d * mZoomManager.getScale()); 2273 } 2274 2275 /** 2276 * Given an x coordinate in content space, convert it to view 2277 * space. 2278 */ 2279 /*package*/ int contentToViewX(int x) { 2280 return contentToViewDimension(x); 2281 } 2282 2283 /** 2284 * Given a y coordinate in content space, convert it to view 2285 * space. Takes into account the height of the title bar. 2286 */ 2287 /*package*/ int contentToViewY(int y) { 2288 return contentToViewDimension(y) + getTitleHeight(); 2289 } 2290 2291 private Rect contentToViewRect(Rect x) { 2292 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2293 contentToViewX(x.right), contentToViewY(x.bottom)); 2294 } 2295 2296 /* To invalidate a rectangle in content coordinates, we need to transform 2297 the rect into view coordinates, so we can then call invalidate(...). 2298 2299 Normally, we would just call contentToView[XY](...), which eventually 2300 calls Math.round(coordinate * mActualScale). However, for invalidates, 2301 we need to account for the slop that occurs with antialiasing. To 2302 address that, we are a little more liberal in the size of the rect that 2303 we invalidate. 2304 2305 This liberal calculation calls floor() for the top/left, and ceil() for 2306 the bottom/right coordinates. This catches the possible extra pixels of 2307 antialiasing that we might have missed with just round(). 2308 */ 2309 2310 // Called by JNI to invalidate the View, given rectangle coordinates in 2311 // content space 2312 private void viewInvalidate(int l, int t, int r, int b) { 2313 final float scale = mZoomManager.getScale(); 2314 final int dy = getTitleHeight(); 2315 invalidate((int)Math.floor(l * scale), 2316 (int)Math.floor(t * scale) + dy, 2317 (int)Math.ceil(r * scale), 2318 (int)Math.ceil(b * scale) + dy); 2319 } 2320 2321 // Called by JNI to invalidate the View after a delay, given rectangle 2322 // coordinates in content space 2323 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2324 final float scale = mZoomManager.getScale(); 2325 final int dy = getTitleHeight(); 2326 postInvalidateDelayed(delay, 2327 (int)Math.floor(l * scale), 2328 (int)Math.floor(t * scale) + dy, 2329 (int)Math.ceil(r * scale), 2330 (int)Math.ceil(b * scale) + dy); 2331 } 2332 2333 private void invalidateContentRect(Rect r) { 2334 viewInvalidate(r.left, r.top, r.right, r.bottom); 2335 } 2336 2337 // stop the scroll animation, and don't let a subsequent fling add 2338 // to the existing velocity 2339 private void abortAnimation() { 2340 mScroller.abortAnimation(); 2341 mLastVelocity = 0; 2342 } 2343 2344 /* call from webcoreview.draw(), so we're still executing in the UI thread 2345 */ 2346 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2347 2348 // premature data from webkit, ignore 2349 if ((w | h) == 0) { 2350 return; 2351 } 2352 2353 // don't abort a scroll animation if we didn't change anything 2354 if (mContentWidth != w || mContentHeight != h) { 2355 // record new dimensions 2356 mContentWidth = w; 2357 mContentHeight = h; 2358 // If history Picture is drawn, don't update scroll. They will be 2359 // updated when we get out of that mode. 2360 if (!mDrawHistory) { 2361 // repin our scroll, taking into account the new content size 2362 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2363 if (!mScroller.isFinished()) { 2364 // We are in the middle of a scroll. Repin the final scroll 2365 // position. 2366 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2367 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2368 } 2369 } 2370 } 2371 contentSizeChanged(updateLayout); 2372 } 2373 2374 // Used to avoid sending many visible rect messages. 2375 private Rect mLastVisibleRectSent; 2376 private Rect mLastGlobalRect; 2377 2378 Rect sendOurVisibleRect() { 2379 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2380 2381 Rect rect = new Rect(); 2382 calcOurContentVisibleRect(rect); 2383 // Rect.equals() checks for null input. 2384 if (!rect.equals(mLastVisibleRectSent)) { 2385 Point pos = new Point(rect.left, rect.top); 2386 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2387 nativeMoveGeneration(), 0, pos); 2388 mLastVisibleRectSent = rect; 2389 } 2390 Rect globalRect = new Rect(); 2391 if (getGlobalVisibleRect(globalRect) 2392 && !globalRect.equals(mLastGlobalRect)) { 2393 if (DebugFlags.WEB_VIEW) { 2394 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2395 + globalRect.top + ",r=" + globalRect.right + ",b=" 2396 + globalRect.bottom); 2397 } 2398 // TODO: the global offset is only used by windowRect() 2399 // in ChromeClientAndroid ; other clients such as touch 2400 // and mouse events could return view + screen relative points. 2401 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2402 mLastGlobalRect = globalRect; 2403 } 2404 return rect; 2405 } 2406 2407 // Sets r to be the visible rectangle of our webview in view coordinates 2408 private void calcOurVisibleRect(Rect r) { 2409 Point p = new Point(); 2410 getGlobalVisibleRect(r, p); 2411 r.offset(-p.x, -p.y); 2412 } 2413 2414 // Sets r to be our visible rectangle in content coordinates 2415 private void calcOurContentVisibleRect(Rect r) { 2416 calcOurVisibleRect(r); 2417 // pin the rect to the bounds of the content 2418 r.left = Math.max(viewToContentX(r.left), 0); 2419 // viewToContentY will remove the total height of the title bar. Add 2420 // the visible height back in to account for the fact that if the title 2421 // bar is partially visible, the part of the visible rect which is 2422 // displaying our content is displaced by that amount. 2423 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2424 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2425 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2426 } 2427 2428 // Sets r to be our visible rectangle in content coordinates. We use this 2429 // method on the native side to compute the position of the fixed layers. 2430 // Uses floating coordinates (necessary to correctly place elements when 2431 // the scale factor is not 1) 2432 private void calcOurContentVisibleRectF(RectF r) { 2433 Rect ri = new Rect(0,0,0,0); 2434 calcOurVisibleRect(ri); 2435 // pin the rect to the bounds of the content 2436 r.left = Math.max(viewToContentXf(ri.left), 0.0f); 2437 // viewToContentY will remove the total height of the title bar. Add 2438 // the visible height back in to account for the fact that if the title 2439 // bar is partially visible, the part of the visible rect which is 2440 // displaying our content is displaced by that amount. 2441 r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f); 2442 r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth); 2443 r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight); 2444 } 2445 2446 static class ViewSizeData { 2447 int mWidth; 2448 int mHeight; 2449 int mTextWrapWidth; 2450 int mAnchorX; 2451 int mAnchorY; 2452 float mScale; 2453 boolean mIgnoreHeight; 2454 } 2455 2456 /** 2457 * Compute unzoomed width and height, and if they differ from the last 2458 * values we sent, send them to webkit (to be used as new viewport) 2459 * 2460 * @param force ensures that the message is sent to webkit even if the width 2461 * or height has not changed since the last message 2462 * 2463 * @return true if new values were sent 2464 */ 2465 boolean sendViewSizeZoom(boolean force) { 2466 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2467 2468 int viewWidth = getViewWidth(); 2469 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2470 int newHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2471 /* 2472 * Because the native side may have already done a layout before the 2473 * View system was able to measure us, we have to send a height of 0 to 2474 * remove excess whitespace when we grow our width. This will trigger a 2475 * layout and a change in content size. This content size change will 2476 * mean that contentSizeChanged will either call this method directly or 2477 * indirectly from onSizeChanged. 2478 */ 2479 if (newWidth > mLastWidthSent && mWrapContent) { 2480 newHeight = 0; 2481 } 2482 // Avoid sending another message if the dimensions have not changed. 2483 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force) { 2484 ViewSizeData data = new ViewSizeData(); 2485 data.mWidth = newWidth; 2486 data.mHeight = newHeight; 2487 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2488 data.mScale = mZoomManager.getScale(); 2489 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2490 && !mHeightCanMeasure; 2491 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2492 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2493 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2494 mLastWidthSent = newWidth; 2495 mLastHeightSent = newHeight; 2496 mZoomManager.clearDocumentAnchor(); 2497 return true; 2498 } 2499 return false; 2500 } 2501 2502 @Override 2503 protected int computeHorizontalScrollRange() { 2504 if (mDrawHistory) { 2505 return mHistoryWidth; 2506 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2507 && !mZoomManager.canZoomOut()) { 2508 // only honor the scrollbar mode when it is at minimum zoom level 2509 return computeHorizontalScrollExtent(); 2510 } else { 2511 // to avoid rounding error caused unnecessary scrollbar, use floor 2512 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2513 } 2514 } 2515 2516 @Override 2517 protected int computeVerticalScrollRange() { 2518 if (mDrawHistory) { 2519 return mHistoryHeight; 2520 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2521 && !mZoomManager.canZoomOut()) { 2522 // only honor the scrollbar mode when it is at minimum zoom level 2523 return computeVerticalScrollExtent(); 2524 } else { 2525 // to avoid rounding error caused unnecessary scrollbar, use floor 2526 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2527 } 2528 } 2529 2530 @Override 2531 protected int computeVerticalScrollOffset() { 2532 return Math.max(mScrollY - getTitleHeight(), 0); 2533 } 2534 2535 @Override 2536 protected int computeVerticalScrollExtent() { 2537 return getViewHeight(); 2538 } 2539 2540 /** @hide */ 2541 @Override 2542 protected void onDrawVerticalScrollBar(Canvas canvas, 2543 Drawable scrollBar, 2544 int l, int t, int r, int b) { 2545 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2546 scrollBar.draw(canvas); 2547 } 2548 2549 /** 2550 * Get the url for the current page. This is not always the same as the url 2551 * passed to WebViewClient.onPageStarted because although the load for 2552 * that url has begun, the current page may not have changed. 2553 * @return The url for the current page. 2554 */ 2555 public String getUrl() { 2556 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2557 return h != null ? h.getUrl() : null; 2558 } 2559 2560 /** 2561 * Get the original url for the current page. This is not always the same 2562 * as the url passed to WebViewClient.onPageStarted because although the 2563 * load for that url has begun, the current page may not have changed. 2564 * Also, there may have been redirects resulting in a different url to that 2565 * originally requested. 2566 * @return The url that was originally requested for the current page. 2567 */ 2568 public String getOriginalUrl() { 2569 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2570 return h != null ? h.getOriginalUrl() : null; 2571 } 2572 2573 /** 2574 * Get the title for the current page. This is the title of the current page 2575 * until WebViewClient.onReceivedTitle is called. 2576 * @return The title for the current page. 2577 */ 2578 public String getTitle() { 2579 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2580 return h != null ? h.getTitle() : null; 2581 } 2582 2583 /** 2584 * Get the favicon for the current page. This is the favicon of the current 2585 * page until WebViewClient.onReceivedIcon is called. 2586 * @return The favicon for the current page. 2587 */ 2588 public Bitmap getFavicon() { 2589 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2590 return h != null ? h.getFavicon() : null; 2591 } 2592 2593 /** 2594 * Get the touch icon url for the apple-touch-icon <link> element, or 2595 * a URL on this site's server pointing to the standard location of a 2596 * touch icon. 2597 * @hide 2598 */ 2599 public String getTouchIconUrl() { 2600 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2601 return h != null ? h.getTouchIconUrl() : null; 2602 } 2603 2604 /** 2605 * Get the progress for the current page. 2606 * @return The progress for the current page between 0 and 100. 2607 */ 2608 public int getProgress() { 2609 return mCallbackProxy.getProgress(); 2610 } 2611 2612 /** 2613 * @return the height of the HTML content. 2614 */ 2615 public int getContentHeight() { 2616 return mContentHeight; 2617 } 2618 2619 /** 2620 * @return the width of the HTML content. 2621 * @hide 2622 */ 2623 public int getContentWidth() { 2624 return mContentWidth; 2625 } 2626 2627 /** 2628 * Pause all layout, parsing, and javascript timers for all webviews. This 2629 * is a global requests, not restricted to just this webview. This can be 2630 * useful if the application has been paused. 2631 */ 2632 public void pauseTimers() { 2633 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2634 } 2635 2636 /** 2637 * Resume all layout, parsing, and javascript timers for all webviews. 2638 * This will resume dispatching all timers. 2639 */ 2640 public void resumeTimers() { 2641 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2642 } 2643 2644 /** 2645 * Call this to pause any extra processing associated with this view and 2646 * its associated DOM/plugins/javascript/etc. For example, if the view is 2647 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2648 * network traffic. When the view is again "active", call onResume(). 2649 * 2650 * Note that this differs from pauseTimers(), which affects all views/DOMs 2651 * @hide 2652 */ 2653 public void onPause() { 2654 if (!mIsPaused) { 2655 mIsPaused = true; 2656 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2657 } 2658 } 2659 2660 /** 2661 * Call this to balanace a previous call to onPause() 2662 * @hide 2663 */ 2664 public void onResume() { 2665 if (mIsPaused) { 2666 mIsPaused = false; 2667 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2668 } 2669 } 2670 2671 /** 2672 * Returns true if the view is paused, meaning onPause() was called. Calling 2673 * onResume() sets the paused state back to false. 2674 * @hide 2675 */ 2676 public boolean isPaused() { 2677 return mIsPaused; 2678 } 2679 2680 /** 2681 * Call this to inform the view that memory is low so that it can 2682 * free any available memory. 2683 */ 2684 public void freeMemory() { 2685 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2686 } 2687 2688 /** 2689 * Clear the resource cache. Note that the cache is per-application, so 2690 * this will clear the cache for all WebViews used. 2691 * 2692 * @param includeDiskFiles If false, only the RAM cache is cleared. 2693 */ 2694 public void clearCache(boolean includeDiskFiles) { 2695 // Note: this really needs to be a static method as it clears cache for all 2696 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2697 // we can't make this static. 2698 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2699 includeDiskFiles ? 1 : 0, 0); 2700 } 2701 2702 /** 2703 * Make sure that clearing the form data removes the adapter from the 2704 * currently focused textfield if there is one. 2705 */ 2706 public void clearFormData() { 2707 if (inEditingMode()) { 2708 AutoCompleteAdapter adapter = null; 2709 mWebTextView.setAdapterCustom(adapter); 2710 } 2711 } 2712 2713 /** 2714 * Tell the WebView to clear its internal back/forward list. 2715 */ 2716 public void clearHistory() { 2717 mCallbackProxy.getBackForwardList().setClearPending(); 2718 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2719 } 2720 2721 /** 2722 * Clear the SSL preferences table stored in response to proceeding with SSL 2723 * certificate errors. 2724 */ 2725 public void clearSslPreferences() { 2726 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2727 } 2728 2729 /** 2730 * Return the WebBackForwardList for this WebView. This contains the 2731 * back/forward list for use in querying each item in the history stack. 2732 * This is a copy of the private WebBackForwardList so it contains only a 2733 * snapshot of the current state. Multiple calls to this method may return 2734 * different objects. The object returned from this method will not be 2735 * updated to reflect any new state. 2736 */ 2737 public WebBackForwardList copyBackForwardList() { 2738 return mCallbackProxy.getBackForwardList().clone(); 2739 } 2740 2741 /* 2742 * Highlight and scroll to the next occurance of String in findAll. 2743 * Wraps the page infinitely, and scrolls. Must be called after 2744 * calling findAll. 2745 * 2746 * @param forward Direction to search. 2747 */ 2748 public void findNext(boolean forward) { 2749 if (0 == mNativeClass) return; // client isn't initialized 2750 nativeFindNext(forward); 2751 } 2752 2753 /* 2754 * Find all instances of find on the page and highlight them. 2755 * @param find String to find. 2756 * @return int The number of occurances of the String "find" 2757 * that were found. 2758 */ 2759 public int findAll(String find) { 2760 if (0 == mNativeClass) return 0; // client isn't initialized 2761 int result = find != null ? nativeFindAll(find.toLowerCase(), 2762 find.toUpperCase()) : 0; 2763 invalidate(); 2764 mLastFind = find; 2765 return result; 2766 } 2767 2768 /** 2769 * Start an ActionMode for finding text in this WebView. 2770 * @param text If non-null, will be the initial text to search for. 2771 * Otherwise, the last String searched for in this WebView will 2772 * be used to start. 2773 */ 2774 public void showFindDialog(String text) { 2775 mFindCallback = new FindActionModeCallback(mContext); 2776 setFindIsUp(true); 2777 mFindCallback.setWebView(this); 2778 View titleBar = mTitleBar; 2779 // We do not want to show the embedded title bar during find or 2780 // select, but keep track of it so that it can be replaced when the 2781 // mode is exited. 2782 setEmbeddedTitleBar(null); 2783 mFindCallback.setTitleBar(titleBar); 2784 startActionMode(mFindCallback); 2785 if (text == null) { 2786 text = mLastFind; 2787 } 2788 if (text != null) { 2789 mFindCallback.setText(text); 2790 } 2791 } 2792 2793 /** 2794 * Keep track of the find callback so that we can remove its titlebar if 2795 * necessary. 2796 */ 2797 private FindActionModeCallback mFindCallback; 2798 2799 /** 2800 * Toggle whether the find dialog is showing, for both native and Java. 2801 */ 2802 private void setFindIsUp(boolean isUp) { 2803 mFindIsUp = isUp; 2804 if (0 == mNativeClass) return; // client isn't initialized 2805 nativeSetFindIsUp(isUp); 2806 } 2807 2808 /** 2809 * Return the index of the currently highlighted match. 2810 */ 2811 int findIndex() { 2812 if (0 == mNativeClass) return -1; 2813 return nativeFindIndex(); 2814 } 2815 2816 // Used to know whether the find dialog is open. Affects whether 2817 // or not we draw the highlights for matches. 2818 private boolean mFindIsUp; 2819 2820 // Keep track of the last string sent, so we can search again when find is 2821 // reopened. 2822 private String mLastFind; 2823 2824 /** 2825 * Return the first substring consisting of the address of a physical 2826 * location. Currently, only addresses in the United States are detected, 2827 * and consist of: 2828 * - a house number 2829 * - a street name 2830 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2831 * - a city name 2832 * - a state or territory, either spelled out or two-letter abbr. 2833 * - an optional 5 digit or 9 digit zip code. 2834 * 2835 * All names must be correctly capitalized, and the zip code, if present, 2836 * must be valid for the state. The street type must be a standard USPS 2837 * spelling or abbreviation. The state or territory must also be spelled 2838 * or abbreviated using USPS standards. The house number may not exceed 2839 * five digits. 2840 * @param addr The string to search for addresses. 2841 * 2842 * @return the address, or if no address is found, return null. 2843 */ 2844 public static String findAddress(String addr) { 2845 return findAddress(addr, false); 2846 } 2847 2848 /** 2849 * @hide 2850 * Return the first substring consisting of the address of a physical 2851 * location. Currently, only addresses in the United States are detected, 2852 * and consist of: 2853 * - a house number 2854 * - a street name 2855 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2856 * - a city name 2857 * - a state or territory, either spelled out or two-letter abbr. 2858 * - an optional 5 digit or 9 digit zip code. 2859 * 2860 * Names are optionally capitalized, and the zip code, if present, 2861 * must be valid for the state. The street type must be a standard USPS 2862 * spelling or abbreviation. The state or territory must also be spelled 2863 * or abbreviated using USPS standards. The house number may not exceed 2864 * five digits. 2865 * @param addr The string to search for addresses. 2866 * @param caseInsensitive addr Set to true to make search ignore case. 2867 * 2868 * @return the address, or if no address is found, return null. 2869 */ 2870 public static String findAddress(String addr, boolean caseInsensitive) { 2871 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2872 } 2873 2874 /* 2875 * Clear the highlighting surrounding text matches created by findAll. 2876 */ 2877 public void clearMatches() { 2878 if (mNativeClass == 0) 2879 return; 2880 nativeSetFindIsEmpty(); 2881 invalidate(); 2882 } 2883 2884 /** 2885 * Called when the find ActionMode ends. 2886 */ 2887 void notifyFindDialogDismissed() { 2888 mFindCallback = null; 2889 if (mWebViewCore == null) { 2890 return; 2891 } 2892 clearMatches(); 2893 setFindIsUp(false); 2894 // Now that the dialog has been removed, ensure that we scroll to a 2895 // location that is not beyond the end of the page. 2896 pinScrollTo(mScrollX, mScrollY, false, 0); 2897 invalidate(); 2898 } 2899 2900 /** 2901 * Query the document to see if it contains any image references. The 2902 * message object will be dispatched with arg1 being set to 1 if images 2903 * were found and 0 if the document does not reference any images. 2904 * @param response The message that will be dispatched with the result. 2905 */ 2906 public void documentHasImages(Message response) { 2907 if (response == null) { 2908 return; 2909 } 2910 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2911 } 2912 2913 /** 2914 * Request the scroller to abort any ongoing animation 2915 * 2916 * @hide 2917 */ 2918 public void stopScroll() { 2919 mScroller.forceFinished(true); 2920 mLastVelocity = 0; 2921 } 2922 2923 @Override 2924 public void computeScroll() { 2925 if (mScroller.computeScrollOffset()) { 2926 int oldX = mScrollX; 2927 int oldY = mScrollY; 2928 mScrollX = mScroller.getCurrX(); 2929 mScrollY = mScroller.getCurrY(); 2930 postInvalidate(); // So we draw again 2931 if (oldX != mScrollX || oldY != mScrollY) { 2932 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2933 } else { 2934 abortAnimation(); 2935 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 2936 WebViewCore.resumePriority(); 2937 WebViewCore.resumeUpdatePicture(mWebViewCore); 2938 } 2939 } else { 2940 super.computeScroll(); 2941 } 2942 } 2943 2944 private static int computeDuration(int dx, int dy) { 2945 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2946 int duration = distance * 1000 / STD_SPEED; 2947 return Math.min(duration, MAX_DURATION); 2948 } 2949 2950 // helper to pin the scrollBy parameters (already in view coordinates) 2951 // returns true if the scroll was changed 2952 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2953 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2954 } 2955 // helper to pin the scrollTo parameters (already in view coordinates) 2956 // returns true if the scroll was changed 2957 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2958 x = pinLocX(x); 2959 y = pinLocY(y); 2960 int dx = x - mScrollX; 2961 int dy = y - mScrollY; 2962 2963 if ((dx | dy) == 0) { 2964 return false; 2965 } 2966 if (animate) { 2967 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2968 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2969 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2970 awakenScrollBars(mScroller.getDuration()); 2971 invalidate(); 2972 } else { 2973 abortAnimation(); // just in case 2974 scrollTo(x, y); 2975 } 2976 return true; 2977 } 2978 2979 // Scale from content to view coordinates, and pin. 2980 // Also called by jni webview.cpp 2981 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2982 if (mDrawHistory) { 2983 // disallow WebView to change the scroll position as History Picture 2984 // is used in the view system. 2985 // TODO: as we switchOutDrawHistory when trackball or navigation 2986 // keys are hit, this should be safe. Right? 2987 return false; 2988 } 2989 cx = contentToViewDimension(cx); 2990 cy = contentToViewDimension(cy); 2991 if (mHeightCanMeasure) { 2992 // move our visible rect according to scroll request 2993 if (cy != 0) { 2994 Rect tempRect = new Rect(); 2995 calcOurVisibleRect(tempRect); 2996 tempRect.offset(cx, cy); 2997 requestRectangleOnScreen(tempRect); 2998 } 2999 // FIXME: We scroll horizontally no matter what because currently 3000 // ScrollView and ListView will not scroll horizontally. 3001 // FIXME: Why do we only scroll horizontally if there is no 3002 // vertical scroll? 3003// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3004 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3005 } else { 3006 return pinScrollBy(cx, cy, animate, 0); 3007 } 3008 } 3009 3010 /** 3011 * Called by CallbackProxy when the page starts loading. 3012 * @param url The URL of the page which has started loading. 3013 */ 3014 /* package */ void onPageStarted(String url) { 3015 // every time we start a new page, we want to reset the 3016 // WebView certificate: if the new site is secure, we 3017 // will reload it and get a new certificate set; 3018 // if the new site is not secure, the certificate must be 3019 // null, and that will be the case 3020 setCertificate(null); 3021 3022 // reset the flag since we set to true in if need after 3023 // loading is see onPageFinished(Url) 3024 mAccessibilityScriptInjected = false; 3025 } 3026 3027 /** 3028 * Called by CallbackProxy when the page finishes loading. 3029 * @param url The URL of the page which has finished loading. 3030 */ 3031 /* package */ void onPageFinished(String url) { 3032 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3033 // If the user is now on a different page, or has scrolled the page 3034 // past the point where the title bar is offscreen, ignore the 3035 // scroll request. 3036 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3037 && mScrollX == 0 && mScrollY == 0) { 3038 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3039 SLIDE_TITLE_DURATION); 3040 } 3041 mPageThatNeedsToSlideTitleBarOffScreen = null; 3042 } 3043 3044 injectAccessibilityForUrl(url); 3045 } 3046 3047 /** 3048 * This method injects accessibility in the loaded document if accessibility 3049 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3050 * If no URL specific script is found or JavaScript is disabled we fallback to 3051 * the default {@link AccessibilityInjector} implementation. 3052 * </p> 3053 * If the URL has the "axs" paramter set to 1 it has already done the 3054 * script injection so we do nothing. If the parameter is set to 0 3055 * the URL opts out accessibility script injection so we fall back to 3056 * the default {@link AccessibilityInjector}. 3057 * </p> 3058 * Note: If the user has not opted-in the accessibility script injection no scripts 3059 * are injected rather the default {@link AccessibilityInjector} implementation 3060 * is used. 3061 * 3062 * @param url The URL loaded by this {@link WebView}. 3063 */ 3064 private void injectAccessibilityForUrl(String url) { 3065 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3066 3067 if (!accessibilityManager.isEnabled()) { 3068 // it is possible that accessibility was turned off between reloads 3069 ensureAccessibilityScriptInjectorInstance(false); 3070 return; 3071 } 3072 3073 if (!getSettings().getJavaScriptEnabled()) { 3074 // no JS so we fallback to the basic buil-in support 3075 ensureAccessibilityScriptInjectorInstance(true); 3076 return; 3077 } 3078 3079 // check the URL "axs" parameter to choose appropriate action 3080 int axsParameterValue = getAxsUrlParameterValue(url); 3081 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3082 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3083 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3084 if (onDeviceScriptInjectionEnabled) { 3085 ensureAccessibilityScriptInjectorInstance(false); 3086 // neither script injected nor script injection opted out => we inject 3087 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3088 // TODO: Set this flag after successfull script injection. Maybe upon injection 3089 // the chooser should update the meta tag and we check it to declare success 3090 mAccessibilityScriptInjected = true; 3091 } else { 3092 // injection disabled so we fallback to the basic built-in support 3093 ensureAccessibilityScriptInjectorInstance(true); 3094 } 3095 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3096 // injection opted out so we fallback to the basic buil-in support 3097 ensureAccessibilityScriptInjectorInstance(true); 3098 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3099 ensureAccessibilityScriptInjectorInstance(false); 3100 // the URL provides accessibility but we still need to add our generic script 3101 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3102 } else { 3103 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3104 } 3105 } 3106 3107 /** 3108 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3109 * 3110 * @param present True to ensure an insance, false to ensure no instance. 3111 */ 3112 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3113 if (present && mAccessibilityInjector == null) { 3114 mAccessibilityInjector = new AccessibilityInjector(this); 3115 } else { 3116 mAccessibilityInjector = null; 3117 } 3118 } 3119 3120 /** 3121 * Gets the "axs" URL parameter value. 3122 * 3123 * @param url A url to fetch the paramter from. 3124 * @return The parameter value if such, -1 otherwise. 3125 */ 3126 private int getAxsUrlParameterValue(String url) { 3127 if (mMatchAxsUrlParameterPattern == null) { 3128 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3129 } 3130 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3131 if (matcher.find()) { 3132 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3133 return Integer.parseInt(keyValuePair.split("=")[1]); 3134 } 3135 return -1; 3136 } 3137 3138 /** 3139 * The URL of a page that sent a message to scroll the title bar off screen. 3140 * 3141 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3142 * title bar off the screen. Sometimes, the scroll position is set before 3143 * the page finishes loading. Rather than scrolling while the page is still 3144 * loading, keep track of the URL and new scroll position so we can perform 3145 * the scroll once the page finishes loading. 3146 */ 3147 private String mPageThatNeedsToSlideTitleBarOffScreen; 3148 3149 /** 3150 * The destination Y scroll position to be used when the page finishes 3151 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3152 */ 3153 private int mYDistanceToSlideTitleOffScreen; 3154 3155 // scale from content to view coordinates, and pin 3156 // return true if pin caused the final x/y different than the request cx/cy, 3157 // and a future scroll may reach the request cx/cy after our size has 3158 // changed 3159 // return false if the view scroll to the exact position as it is requested, 3160 // where negative numbers are taken to mean 0 3161 private boolean setContentScrollTo(int cx, int cy) { 3162 if (mDrawHistory) { 3163 // disallow WebView to change the scroll position as History Picture 3164 // is used in the view system. 3165 // One known case where this is called is that WebCore tries to 3166 // restore the scroll position. As history Picture already uses the 3167 // saved scroll position, it is ok to skip this. 3168 return false; 3169 } 3170 int vx; 3171 int vy; 3172 if ((cx | cy) == 0) { 3173 // If the page is being scrolled to (0,0), do not add in the title 3174 // bar's height, and simply scroll to (0,0). (The only other work 3175 // in contentToView_ is to multiply, so this would not change 0.) 3176 vx = 0; 3177 vy = 0; 3178 } else { 3179 vx = contentToViewX(cx); 3180 vy = contentToViewY(cy); 3181 } 3182// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3183// vx + " " + vy + "]"); 3184 // Some mobile sites attempt to scroll the title bar off the page by 3185 // scrolling to (0,1). If we are at the top left corner of the 3186 // page, assume this is an attempt to scroll off the title bar, and 3187 // animate the title bar off screen slowly enough that the user can see 3188 // it. 3189 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3190 && mTitleBar != null) { 3191 // FIXME: 100 should be defined somewhere as our max progress. 3192 if (getProgress() < 100) { 3193 // Wait to scroll the title bar off screen until the page has 3194 // finished loading. Keep track of the URL and the destination 3195 // Y position 3196 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3197 mYDistanceToSlideTitleOffScreen = vy; 3198 } else { 3199 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3200 } 3201 // Since we are animating, we have not yet reached the desired 3202 // scroll position. Do not return true to request another attempt 3203 return false; 3204 } 3205 pinScrollTo(vx, vy, false, 0); 3206 // If the request was to scroll to a negative coordinate, treat it as if 3207 // it was a request to scroll to 0 3208 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3209 return true; 3210 } else { 3211 return false; 3212 } 3213 } 3214 3215 // scale from content to view coordinates, and pin 3216 private void spawnContentScrollTo(int cx, int cy) { 3217 if (mDrawHistory) { 3218 // disallow WebView to change the scroll position as History Picture 3219 // is used in the view system. 3220 return; 3221 } 3222 int vx = contentToViewX(cx); 3223 int vy = contentToViewY(cy); 3224 pinScrollTo(vx, vy, true, 0); 3225 } 3226 3227 /** 3228 * These are from webkit, and are in content coordinate system (unzoomed) 3229 */ 3230 private void contentSizeChanged(boolean updateLayout) { 3231 // suppress 0,0 since we usually see real dimensions soon after 3232 // this avoids drawing the prev content in a funny place. If we find a 3233 // way to consolidate these notifications, this check may become 3234 // obsolete 3235 if ((mContentWidth | mContentHeight) == 0) { 3236 return; 3237 } 3238 3239 if (mHeightCanMeasure) { 3240 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3241 || updateLayout) { 3242 requestLayout(); 3243 } 3244 } else if (mWidthCanMeasure) { 3245 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3246 || updateLayout) { 3247 requestLayout(); 3248 } 3249 } else { 3250 // If we don't request a layout, try to send our view size to the 3251 // native side to ensure that WebCore has the correct dimensions. 3252 sendViewSizeZoom(false); 3253 } 3254 } 3255 3256 /** 3257 * Set the WebViewClient that will receive various notifications and 3258 * requests. This will replace the current handler. 3259 * @param client An implementation of WebViewClient. 3260 */ 3261 public void setWebViewClient(WebViewClient client) { 3262 mCallbackProxy.setWebViewClient(client); 3263 } 3264 3265 /** 3266 * Gets the WebViewClient 3267 * @return the current WebViewClient instance. 3268 * 3269 *@hide pending API council approval. 3270 */ 3271 public WebViewClient getWebViewClient() { 3272 return mCallbackProxy.getWebViewClient(); 3273 } 3274 3275 /** 3276 * Register the interface to be used when content can not be handled by 3277 * the rendering engine, and should be downloaded instead. This will replace 3278 * the current handler. 3279 * @param listener An implementation of DownloadListener. 3280 */ 3281 public void setDownloadListener(DownloadListener listener) { 3282 mCallbackProxy.setDownloadListener(listener); 3283 } 3284 3285 /** 3286 * Set the chrome handler. This is an implementation of WebChromeClient for 3287 * use in handling Javascript dialogs, favicons, titles, and the progress. 3288 * This will replace the current handler. 3289 * @param client An implementation of WebChromeClient. 3290 */ 3291 public void setWebChromeClient(WebChromeClient client) { 3292 mCallbackProxy.setWebChromeClient(client); 3293 } 3294 3295 /** 3296 * Gets the chrome handler. 3297 * @return the current WebChromeClient instance. 3298 * 3299 * @hide API council approval. 3300 */ 3301 public WebChromeClient getWebChromeClient() { 3302 return mCallbackProxy.getWebChromeClient(); 3303 } 3304 3305 /** 3306 * Set the back/forward list client. This is an implementation of 3307 * WebBackForwardListClient for handling new items and changes in the 3308 * history index. 3309 * @param client An implementation of WebBackForwardListClient. 3310 * {@hide} 3311 */ 3312 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3313 mCallbackProxy.setWebBackForwardListClient(client); 3314 } 3315 3316 /** 3317 * Gets the WebBackForwardListClient. 3318 * {@hide} 3319 */ 3320 public WebBackForwardListClient getWebBackForwardListClient() { 3321 return mCallbackProxy.getWebBackForwardListClient(); 3322 } 3323 3324 /** 3325 * Set the Picture listener. This is an interface used to receive 3326 * notifications of a new Picture. 3327 * @param listener An implementation of WebView.PictureListener. 3328 */ 3329 public void setPictureListener(PictureListener listener) { 3330 mPictureListener = listener; 3331 } 3332 3333 /** 3334 * {@hide} 3335 */ 3336 /* FIXME: Debug only! Remove for SDK! */ 3337 public void externalRepresentation(Message callback) { 3338 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3339 } 3340 3341 /** 3342 * {@hide} 3343 */ 3344 /* FIXME: Debug only! Remove for SDK! */ 3345 public void documentAsText(Message callback) { 3346 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3347 } 3348 3349 /** 3350 * Use this function to bind an object to Javascript so that the 3351 * methods can be accessed from Javascript. 3352 * <p><strong>IMPORTANT:</strong> 3353 * <ul> 3354 * <li> Using addJavascriptInterface() allows JavaScript to control your 3355 * application. This can be a very useful feature or a dangerous security 3356 * issue. When the HTML in the WebView is untrustworthy (for example, part 3357 * or all of the HTML is provided by some person or process), then an 3358 * attacker could inject HTML that will execute your code and possibly any 3359 * code of the attacker's choosing.<br> 3360 * Do not use addJavascriptInterface() unless all of the HTML in this 3361 * WebView was written by you.</li> 3362 * <li> The Java object that is bound runs in another thread and not in 3363 * the thread that it was constructed in.</li> 3364 * </ul></p> 3365 * @param obj The class instance to bind to Javascript 3366 * @param interfaceName The name to used to expose the class in Javascript 3367 */ 3368 public void addJavascriptInterface(Object obj, String interfaceName) { 3369 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3370 arg.mObject = obj; 3371 arg.mInterfaceName = interfaceName; 3372 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3373 } 3374 3375 /** 3376 * Return the WebSettings object used to control the settings for this 3377 * WebView. 3378 * @return A WebSettings object that can be used to control this WebView's 3379 * settings. 3380 */ 3381 public WebSettings getSettings() { 3382 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3383 } 3384 3385 /** 3386 * Return the list of currently loaded plugins. 3387 * @return The list of currently loaded plugins. 3388 * 3389 * @deprecated This was used for Gears, which has been deprecated. 3390 */ 3391 @Deprecated 3392 public static synchronized PluginList getPluginList() { 3393 return new PluginList(); 3394 } 3395 3396 /** 3397 * @deprecated This was used for Gears, which has been deprecated. 3398 */ 3399 @Deprecated 3400 public void refreshPlugins(boolean reloadOpenPages) { } 3401 3402 //------------------------------------------------------------------------- 3403 // Override View methods 3404 //------------------------------------------------------------------------- 3405 3406 @Override 3407 protected void finalize() throws Throwable { 3408 try { 3409 destroy(); 3410 } finally { 3411 super.finalize(); 3412 } 3413 } 3414 3415 @Override 3416 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3417 if (child == mTitleBar) { 3418 // When drawing the title bar, move it horizontally to always show 3419 // at the top of the WebView. 3420 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3421 } 3422 return super.drawChild(canvas, child, drawingTime); 3423 } 3424 3425 private void drawContent(Canvas canvas) { 3426 // Update the buttons in the picture, so when we draw the picture 3427 // to the screen, they are in the correct state. 3428 // Tell the native side if user is a) touching the screen, 3429 // b) pressing the trackball down, or c) pressing the enter key 3430 // If the cursor is on a button, we need to draw it in the pressed 3431 // state. 3432 // If mNativeClass is 0, we should not reach here, so we do not 3433 // need to check it again. 3434 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3435 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3436 || mTrackballDown || mGotCenterDown, false); 3437 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3438 } 3439 3440 @Override 3441 protected void onDraw(Canvas canvas) { 3442 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3443 if (mNativeClass == 0) { 3444 return; 3445 } 3446 3447 // if both mContentWidth and mContentHeight are 0, it means there is no 3448 // valid Picture passed to WebView yet. This can happen when WebView 3449 // just starts. Draw the background and return. 3450 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3451 canvas.drawColor(mBackgroundColor); 3452 return; 3453 } 3454 3455 int saveCount = canvas.save(); 3456 if (mTitleBar != null) { 3457 canvas.translate(0, (int) mTitleBar.getHeight()); 3458 } 3459 if (mDragTrackerHandler == null) { 3460 drawContent(canvas); 3461 } else { 3462 if (!mDragTrackerHandler.draw(canvas)) { 3463 // sometimes the tracker doesn't draw, even though its active 3464 drawContent(canvas); 3465 } 3466 if (mDragTrackerHandler.isFinished()) { 3467 mDragTrackerHandler = null; 3468 } 3469 } 3470 canvas.restoreToCount(saveCount); 3471 3472 // Now draw the shadow. 3473 int titleH = getVisibleTitleHeight(); 3474 if (mTitleBar != null && titleH == 0) { 3475 int height = (int) (5f * getContext().getResources() 3476 .getDisplayMetrics().density); 3477 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3478 mScrollY + height); 3479 mTitleShadow.draw(canvas); 3480 } 3481 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3482 invalidate(); 3483 } 3484 if (inEditingMode()) mWebTextView.onDrawSubstitute(); 3485 mWebViewCore.signalRepaintDone(); 3486 3487 // paint the highlight in the end 3488 if (!mTouchHighlightRegion.isEmpty()) { 3489 if (mTouchHightlightPaint == null) { 3490 mTouchHightlightPaint = new Paint(); 3491 mTouchHightlightPaint.setColor(mHightlightColor); 3492 mTouchHightlightPaint.setAntiAlias(true); 3493 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3494 TOUCH_HIGHLIGHT_ARC)); 3495 } 3496 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3497 mTouchHightlightPaint); 3498 } 3499 if (DEBUG_TOUCH_HIGHLIGHT) { 3500 if (getSettings().getNavDump()) { 3501 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3502 if (mTouchCrossHairColor == null) { 3503 mTouchCrossHairColor = new Paint(); 3504 mTouchCrossHairColor.setColor(Color.RED); 3505 } 3506 canvas.drawLine(mTouchHighlightX - mNavSlop, 3507 mTouchHighlightY - mNavSlop, mTouchHighlightX 3508 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3509 + 1, mTouchCrossHairColor); 3510 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3511 mTouchHighlightY - mNavSlop, mTouchHighlightX 3512 - mNavSlop, 3513 mTouchHighlightY + mNavSlop + 1, 3514 mTouchCrossHairColor); 3515 } 3516 } 3517 } 3518 } 3519 3520 private void removeTouchHighlight(boolean removePendingMessage) { 3521 if (removePendingMessage) { 3522 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3523 } 3524 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3525 } 3526 3527 @Override 3528 public void setLayoutParams(ViewGroup.LayoutParams params) { 3529 if (params.height == LayoutParams.WRAP_CONTENT) { 3530 mWrapContent = true; 3531 } 3532 super.setLayoutParams(params); 3533 } 3534 3535 @Override 3536 public boolean performLongClick() { 3537 // performLongClick() is the result of a delayed message. If we switch 3538 // to windows overview, the WebView will be temporarily removed from the 3539 // view system. In that case, do nothing. 3540 if (getParent() == null) return false; 3541 3542 // A multi-finger gesture can look like a long press; make sure we don't take 3543 // long press actions if we're scaling. 3544 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3545 if (detector != null && detector.isInProgress()) { 3546 return false; 3547 } 3548 3549 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3550 // Send the click so that the textfield is in focus 3551 centerKeyPressOnTextField(); 3552 rebuildWebTextView(); 3553 } else { 3554 clearTextEntry(); 3555 } 3556 if (inEditingMode()) { 3557 return mWebTextView.performLongClick(); 3558 } 3559 /* if long click brings up a context menu, the super function 3560 * returns true and we're done. Otherwise, nothing happened when 3561 * the user clicked. */ 3562 if (super.performLongClick()) { 3563 return true; 3564 } 3565 /* In the case where the application hasn't already handled the long 3566 * click action, look for a word under the click. If one is found, 3567 * animate the text selection into view. 3568 * FIXME: no animation code yet */ 3569 if (mSelectingText) return false; // long click does nothing on selection 3570 int x = viewToContentX((int) mLastTouchX + mScrollX); 3571 int y = viewToContentY((int) mLastTouchY + mScrollY); 3572 setUpSelect(); 3573 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3574 nativeSetExtendSelection(); 3575 return true; 3576 } 3577 selectionDone(); 3578 return false; 3579 } 3580 3581 /** 3582 * Keep track of the Callback so we can end its ActionMode or remove its 3583 * titlebar. 3584 */ 3585 private SelectActionModeCallback mSelectCallback; 3586 3587 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3588 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3589 Rect vBox = contentToViewRect(contentBounds); 3590 Rect visibleRect = new Rect(); 3591 calcOurVisibleRect(visibleRect); 3592 // If the textfield is on screen, place the WebTextView in 3593 // its new place, accounting for our new scroll/zoom values, 3594 // and adjust its textsize. 3595 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3596 : visibleRect.contains(vBox)) { 3597 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3598 vBox.height()); 3599 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3600 contentToViewDimension( 3601 nativeFocusCandidateTextSize())); 3602 return true; 3603 } else { 3604 // The textfield is now off screen. The user probably 3605 // was not zooming to see the textfield better. Remove 3606 // the WebTextView. If the user types a key, and the 3607 // textfield is still in focus, we will reconstruct 3608 // the WebTextView and scroll it back on screen. 3609 mWebTextView.remove(); 3610 return false; 3611 } 3612 } 3613 3614 private void onZoomAnimationStart() { 3615 // If it is in password mode, turn it off so it does not draw misplaced. 3616 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3617 mWebTextView.setInPassword(false); 3618 } 3619 } 3620 3621 private void onZoomAnimationEnd() { 3622 // adjust the edit text view if needed 3623 if (inEditingMode() && didUpdateTextViewBounds(false) && nativeFocusCandidateIsPassword()) { 3624 // If it is a password field, start drawing the WebTextView once 3625 // again. 3626 mWebTextView.setInPassword(true); 3627 } 3628 } 3629 3630 void onFixedLengthZoomAnimationStart() { 3631 WebViewCore.pauseUpdatePicture(getWebViewCore()); 3632 onZoomAnimationStart(); 3633 } 3634 3635 void onFixedLengthZoomAnimationEnd() { 3636 WebViewCore.resumeUpdatePicture(mWebViewCore); 3637 onZoomAnimationEnd(); 3638 } 3639 3640 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 3641 Paint.DITHER_FLAG | 3642 Paint.SUBPIXEL_TEXT_FLAG; 3643 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 3644 Paint.DITHER_FLAG; 3645 3646 private final DrawFilter mZoomFilter = 3647 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 3648 // If we need to trade better quality for speed, set mScrollFilter to null 3649 private final DrawFilter mScrollFilter = 3650 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 3651 3652 private void drawCoreAndCursorRing(Canvas canvas, int color, 3653 boolean drawCursorRing) { 3654 if (mDrawHistory) { 3655 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3656 canvas.drawPicture(mHistoryPicture); 3657 return; 3658 } 3659 if (mNativeClass == 0) return; 3660 3661 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 3662 boolean animateScroll = ((!mScroller.isFinished() 3663 || mVelocityTracker != null) 3664 && (mTouchMode != TOUCH_DRAG_MODE || 3665 mHeldMotionless != MOTIONLESS_TRUE)) 3666 || mDeferTouchMode == TOUCH_DRAG_MODE; 3667 if (mTouchMode == TOUCH_DRAG_MODE) { 3668 if (mHeldMotionless == MOTIONLESS_PENDING) { 3669 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3670 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3671 mHeldMotionless = MOTIONLESS_FALSE; 3672 } 3673 if (mHeldMotionless == MOTIONLESS_FALSE) { 3674 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3675 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3676 mHeldMotionless = MOTIONLESS_PENDING; 3677 } 3678 } 3679 if (animateZoom) { 3680 mZoomManager.animateZoom(canvas); 3681 } else { 3682 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3683 } 3684 3685 boolean UIAnimationsRunning = false; 3686 // Currently for each draw we compute the animation values; 3687 // We may in the future decide to do that independently. 3688 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3689 UIAnimationsRunning = true; 3690 // If we have unfinished (or unstarted) animations, 3691 // we ask for a repaint. 3692 invalidate(); 3693 } 3694 3695 // decide which adornments to draw 3696 int extras = DRAW_EXTRAS_NONE; 3697 if (DebugFlags.WEB_VIEW) { 3698 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 3699 + " mSelectingText=" + mSelectingText 3700 + " nativePageShouldHandleShiftAndArrows()=" 3701 + nativePageShouldHandleShiftAndArrows() 3702 + " animateZoom=" + animateZoom); 3703 } 3704 if (mFindIsUp) { 3705 extras = DRAW_EXTRAS_FIND; 3706 } else if (mSelectingText) { 3707 extras = DRAW_EXTRAS_SELECTION; 3708 nativeSetSelectionPointer(mDrawSelectionPointer, 3709 mZoomManager.getInvScale(), 3710 mSelectX, mSelectY - getTitleHeight()); 3711 } else if (drawCursorRing) { 3712 extras = DRAW_EXTRAS_CURSOR_RING; 3713 } 3714 DrawFilter df = null; 3715 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 3716 df = mZoomFilter; 3717 } else if (animateScroll) { 3718 df = mScrollFilter; 3719 } 3720 canvas.setDrawFilter(df); 3721 int content = nativeDraw(canvas, color, extras, true); 3722 canvas.setDrawFilter(null); 3723 if (content != 0) { 3724 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 3725 } 3726 3727 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3728 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3729 mTouchMode = TOUCH_SHORTPRESS_MODE; 3730 } 3731 } 3732 if (mFocusSizeChanged) { 3733 mFocusSizeChanged = false; 3734 // If we are zooming, this will get handled above, when the zoom 3735 // finishes. We also do not need to do this unless the WebTextView 3736 // is showing. 3737 if (!animateZoom && inEditingMode()) { 3738 didUpdateTextViewBounds(true); 3739 } 3740 } 3741 } 3742 3743 // draw history 3744 private boolean mDrawHistory = false; 3745 private Picture mHistoryPicture = null; 3746 private int mHistoryWidth = 0; 3747 private int mHistoryHeight = 0; 3748 3749 // Only check the flag, can be called from WebCore thread 3750 boolean drawHistory() { 3751 return mDrawHistory; 3752 } 3753 3754 int getHistoryPictureWidth() { 3755 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 3756 } 3757 3758 // Should only be called in UI thread 3759 void switchOutDrawHistory() { 3760 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3761 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 3762 mDrawHistory = false; 3763 mHistoryPicture = null; 3764 invalidate(); 3765 int oldScrollX = mScrollX; 3766 int oldScrollY = mScrollY; 3767 mScrollX = pinLocX(mScrollX); 3768 mScrollY = pinLocY(mScrollY); 3769 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3770 mUserScroll = false; 3771 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3772 oldScrollY); 3773 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3774 } else { 3775 sendOurVisibleRect(); 3776 } 3777 } 3778 } 3779 3780 WebViewCore.CursorData cursorData() { 3781 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3782 result.mMoveGeneration = nativeMoveGeneration(); 3783 result.mFrame = nativeCursorFramePointer(); 3784 Point position = nativeCursorPosition(); 3785 result.mX = position.x; 3786 result.mY = position.y; 3787 return result; 3788 } 3789 3790 /** 3791 * Delete text from start to end in the focused textfield. If there is no 3792 * focus, or if start == end, silently fail. If start and end are out of 3793 * order, swap them. 3794 * @param start Beginning of selection to delete. 3795 * @param end End of selection to delete. 3796 */ 3797 /* package */ void deleteSelection(int start, int end) { 3798 mTextGeneration++; 3799 WebViewCore.TextSelectionData data 3800 = new WebViewCore.TextSelectionData(start, end); 3801 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3802 data); 3803 } 3804 3805 /** 3806 * Set the selection to (start, end) in the focused textfield. If start and 3807 * end are out of order, swap them. 3808 * @param start Beginning of selection. 3809 * @param end End of selection. 3810 */ 3811 /* package */ void setSelection(int start, int end) { 3812 if (mWebViewCore != null) { 3813 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3814 } 3815 } 3816 3817 @Override 3818 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3819 InputConnection connection = super.onCreateInputConnection(outAttrs); 3820 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3821 return connection; 3822 } 3823 3824 /** 3825 * Called in response to a message from webkit telling us that the soft 3826 * keyboard should be launched. 3827 */ 3828 private void displaySoftKeyboard(boolean isTextView) { 3829 InputMethodManager imm = (InputMethodManager) 3830 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3831 3832 // bring it back to the default level scale so that user can enter text 3833 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 3834 if (zoom) { 3835 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 3836 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 3837 } 3838 if (isTextView) { 3839 rebuildWebTextView(); 3840 if (inEditingMode()) { 3841 imm.showSoftInput(mWebTextView, 0); 3842 if (zoom) { 3843 didUpdateTextViewBounds(true); 3844 } 3845 return; 3846 } 3847 } 3848 // Used by plugins and contentEditable. 3849 // Also used if the navigation cache is out of date, and 3850 // does not recognize that a textfield is in focus. In that 3851 // case, use WebView as the targeted view. 3852 // see http://b/issue?id=2457459 3853 imm.showSoftInput(this, 0); 3854 } 3855 3856 // Called by WebKit to instruct the UI to hide the keyboard 3857 private void hideSoftKeyboard() { 3858 InputMethodManager imm = InputMethodManager.peekInstance(); 3859 if (imm != null && (imm.isActive(this) 3860 || (inEditingMode() && imm.isActive(mWebTextView)))) { 3861 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3862 } 3863 } 3864 3865 /* 3866 * This method checks the current focus and cursor and potentially rebuilds 3867 * mWebTextView to have the appropriate properties, such as password, 3868 * multiline, and what text it contains. It also removes it if necessary. 3869 */ 3870 /* package */ void rebuildWebTextView() { 3871 // If the WebView does not have focus, do nothing until it gains focus. 3872 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3873 return; 3874 } 3875 boolean alreadyThere = inEditingMode(); 3876 // inEditingMode can only return true if mWebTextView is non-null, 3877 // so we can safely call remove() if (alreadyThere) 3878 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3879 if (alreadyThere) { 3880 mWebTextView.remove(); 3881 } 3882 return; 3883 } 3884 // At this point, we know we have found an input field, so go ahead 3885 // and create the WebTextView if necessary. 3886 if (mWebTextView == null) { 3887 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillQueryId); 3888 // Initialize our generation number. 3889 mTextGeneration = 0; 3890 } 3891 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3892 contentToViewDimension(nativeFocusCandidateTextSize())); 3893 Rect visibleRect = new Rect(); 3894 calcOurContentVisibleRect(visibleRect); 3895 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3896 // should be in content coordinates. 3897 Rect bounds = nativeFocusCandidateNodeBounds(); 3898 Rect vBox = contentToViewRect(bounds); 3899 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3900 if (!Rect.intersects(bounds, visibleRect)) { 3901 mWebTextView.bringIntoView(); 3902 } 3903 String text = nativeFocusCandidateText(); 3904 int nodePointer = nativeFocusCandidatePointer(); 3905 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3906 // It is possible that we have the same textfield, but it has moved, 3907 // i.e. In the case of opening/closing the screen. 3908 // In that case, we need to set the dimensions, but not the other 3909 // aspects. 3910 // If the text has been changed by webkit, update it. However, if 3911 // there has been more UI text input, ignore it. We will receive 3912 // another update when that text is recognized. 3913 if (text != null && !text.equals(mWebTextView.getText().toString()) 3914 && nativeTextGeneration() == mTextGeneration) { 3915 mWebTextView.setTextAndKeepSelection(text); 3916 } 3917 } else { 3918 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3919 Gravity.RIGHT : Gravity.NO_GRAVITY); 3920 // This needs to be called before setType, which may call 3921 // requestFormData, and it needs to have the correct nodePointer. 3922 mWebTextView.setNodePointer(nodePointer); 3923 mWebTextView.setType(nativeFocusCandidateType()); 3924 if (null == text) { 3925 if (DebugFlags.WEB_VIEW) { 3926 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3927 } 3928 text = ""; 3929 } 3930 mWebTextView.setTextAndKeepSelection(text); 3931 InputMethodManager imm = InputMethodManager.peekInstance(); 3932 if (imm != null && imm.isActive(mWebTextView)) { 3933 imm.restartInput(mWebTextView); 3934 } 3935 } 3936 mWebTextView.requestFocus(); 3937 } 3938 3939 /** 3940 * Tell webkit to put the cursor on screen. 3941 */ 3942 /* package */ void revealSelection() { 3943 if (mWebViewCore != null) { 3944 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 3945 } 3946 } 3947 3948 /** 3949 * Called by WebTextView to find saved form data associated with the 3950 * textfield 3951 * @param name Name of the textfield. 3952 * @param nodePointer Pointer to the node of the textfield, so it can be 3953 * compared to the currently focused textfield when the data is 3954 * retrieved. 3955 * @param autoFillable true if WebKit has determined this field is part of 3956 * a form that can be auto filled. 3957 */ 3958 /* package */ void requestFormData(String name, int nodePointer, boolean autoFillable) { 3959 if (mWebViewCore.getSettings().getSaveFormData()) { 3960 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3961 update.arg1 = nodePointer; 3962 RequestFormData updater = new RequestFormData(name, getUrl(), 3963 update, autoFillable); 3964 Thread t = new Thread(updater); 3965 t.start(); 3966 } 3967 } 3968 3969 /** 3970 * Pass a message to find out the <label> associated with the <input> 3971 * identified by nodePointer 3972 * @param framePointer Pointer to the frame containing the <input> node 3973 * @param nodePointer Pointer to the node for which a <label> is desired. 3974 */ 3975 /* package */ void requestLabel(int framePointer, int nodePointer) { 3976 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3977 nodePointer); 3978 } 3979 3980 /* 3981 * This class requests an Adapter for the WebTextView which shows past 3982 * entries stored in the database. It is a Runnable so that it can be done 3983 * in its own thread, without slowing down the UI. 3984 */ 3985 private class RequestFormData implements Runnable { 3986 private String mName; 3987 private String mUrl; 3988 private Message mUpdateMessage; 3989 private boolean mAutoFillable; 3990 3991 public RequestFormData(String name, String url, Message msg, boolean autoFillable) { 3992 mName = name; 3993 mUrl = url; 3994 mUpdateMessage = msg; 3995 mAutoFillable = autoFillable; 3996 } 3997 3998 public void run() { 3999 ArrayList<String> pastEntries = new ArrayList(); 4000 4001 if (mAutoFillable) { 4002 // Note that code inside the adapter click handler in WebTextView depends 4003 // on the AutoFill item being at the top of the drop down list. If you change 4004 // the order, make sure to do it there too! 4005 pastEntries.add(getResources().getText( 4006 com.android.internal.R.string.autofill_this_form).toString()); 4007 } 4008 4009 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4010 4011 if (pastEntries.size() > 0) { 4012 AutoCompleteAdapter adapter = new 4013 AutoCompleteAdapter(mContext, pastEntries); 4014 mUpdateMessage.obj = adapter; 4015 mUpdateMessage.sendToTarget(); 4016 } 4017 } 4018 } 4019 4020 /** 4021 * Dump the display tree to "/sdcard/displayTree.txt" 4022 * 4023 * @hide debug only 4024 */ 4025 public void dumpDisplayTree() { 4026 nativeDumpDisplayTree(getUrl()); 4027 } 4028 4029 /** 4030 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4031 * "/sdcard/domTree.txt" 4032 * 4033 * @hide debug only 4034 */ 4035 public void dumpDomTree(boolean toFile) { 4036 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4037 } 4038 4039 /** 4040 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4041 * to "/sdcard/renderTree.txt" 4042 * 4043 * @hide debug only 4044 */ 4045 public void dumpRenderTree(boolean toFile) { 4046 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4047 } 4048 4049 /** 4050 * Called by DRT on UI thread, need to proxy to WebCore thread. 4051 * 4052 * @hide debug only 4053 */ 4054 public void useMockDeviceOrientation() { 4055 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4056 } 4057 4058 /** 4059 * Called by DRT on WebCore thread. 4060 * 4061 * @hide debug only 4062 */ 4063 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4064 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4065 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4066 canProvideGamma, gamma); 4067 } 4068 4069 /** 4070 * Dump the V8 counters to standard output. 4071 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4072 * true. Otherwise, this will do nothing. 4073 * 4074 * @hide debug only 4075 */ 4076 public void dumpV8Counters() { 4077 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4078 } 4079 4080 // This is used to determine long press with the center key. Does not 4081 // affect long press with the trackball/touch. 4082 private boolean mGotCenterDown = false; 4083 4084 @Override 4085 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4086 // send complex characters to webkit for use by JS and plugins 4087 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4088 // pass the key to DOM 4089 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4090 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4091 // return true as DOM handles the key 4092 return true; 4093 } 4094 return false; 4095 } 4096 4097 @Override 4098 public boolean onKeyDown(int keyCode, KeyEvent event) { 4099 if (DebugFlags.WEB_VIEW) { 4100 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4101 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4102 } 4103 4104 if (mNativeClass == 0) { 4105 return false; 4106 } 4107 4108 // do this hack up front, so it always works, regardless of touch-mode 4109 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4110 mAutoRedraw = !mAutoRedraw; 4111 if (mAutoRedraw) { 4112 invalidate(); 4113 } 4114 return true; 4115 } 4116 4117 // Bubble up the key event if 4118 // 1. it is a system key; or 4119 // 2. the host application wants to handle it; 4120 // 3. the accessibility injector is present and wants to handle it; 4121 if (event.isSystem() 4122 || mCallbackProxy.uiOverrideKeyEvent(event) 4123 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4124 return false; 4125 } 4126 4127 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4128 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4129 if (pageShouldHandleShiftAndArrows()) { 4130 mShiftIsPressed = true; 4131 } else if (!nativeCursorWantsKeyEvents() && !mSelectingText) { 4132 setUpSelect(); 4133 } 4134 } 4135 4136 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4137 pageUp(false); 4138 return true; 4139 } 4140 4141 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4142 pageDown(false); 4143 return true; 4144 } 4145 4146 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4147 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4148 switchOutDrawHistory(); 4149 if (pageShouldHandleShiftAndArrows()) { 4150 letPageHandleNavKey(keyCode, event.getEventTime(), true); 4151 return true; 4152 } 4153 if (mSelectingText) { 4154 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4155 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4156 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4157 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4158 int multiplier = event.getRepeatCount() + 1; 4159 moveSelection(xRate * multiplier, yRate * multiplier); 4160 return true; 4161 } 4162 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4163 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4164 return true; 4165 } 4166 // Bubble up the key event as WebView doesn't handle it 4167 return false; 4168 } 4169 4170 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4171 switchOutDrawHistory(); 4172 if (event.getRepeatCount() == 0) { 4173 if (mSelectingText) { 4174 return true; // discard press if copy in progress 4175 } 4176 mGotCenterDown = true; 4177 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4178 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4179 // Already checked mNativeClass, so we do not need to check it 4180 // again. 4181 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4182 return true; 4183 } 4184 // Bubble up the key event as WebView doesn't handle it 4185 return false; 4186 } 4187 4188 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 4189 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 4190 // turn off copy select if a shift-key combo is pressed 4191 selectionDone(); 4192 mShiftIsPressed = false; 4193 } 4194 4195 if (getSettings().getNavDump()) { 4196 switch (keyCode) { 4197 case KeyEvent.KEYCODE_4: 4198 dumpDisplayTree(); 4199 break; 4200 case KeyEvent.KEYCODE_5: 4201 case KeyEvent.KEYCODE_6: 4202 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4203 break; 4204 case KeyEvent.KEYCODE_7: 4205 case KeyEvent.KEYCODE_8: 4206 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4207 break; 4208 case KeyEvent.KEYCODE_9: 4209 nativeInstrumentReport(); 4210 return true; 4211 } 4212 } 4213 4214 if (nativeCursorIsTextInput()) { 4215 // This message will put the node in focus, for the DOM's notion 4216 // of focus, and make the focuscontroller active 4217 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 4218 nativeCursorNodePointer()); 4219 // This will bring up the WebTextView and put it in focus, for 4220 // our view system's notion of focus 4221 rebuildWebTextView(); 4222 // Now we need to pass the event to it 4223 if (inEditingMode()) { 4224 mWebTextView.setDefaultSelection(); 4225 return mWebTextView.dispatchKeyEvent(event); 4226 } 4227 } else if (nativeHasFocusNode()) { 4228 // In this case, the cursor is not on a text input, but the focus 4229 // might be. Check it, and if so, hand over to the WebTextView. 4230 rebuildWebTextView(); 4231 if (inEditingMode()) { 4232 mWebTextView.setDefaultSelection(); 4233 return mWebTextView.dispatchKeyEvent(event); 4234 } 4235 } 4236 4237 // TODO: should we pass all the keys to DOM or check the meta tag 4238 if (nativeCursorWantsKeyEvents() || true) { 4239 // pass the key to DOM 4240 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4241 // return true as DOM handles the key 4242 return true; 4243 } 4244 4245 // Bubble up the key event as WebView doesn't handle it 4246 return false; 4247 } 4248 4249 @Override 4250 public boolean onKeyUp(int keyCode, KeyEvent event) { 4251 if (DebugFlags.WEB_VIEW) { 4252 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4253 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4254 } 4255 4256 if (mNativeClass == 0) { 4257 return false; 4258 } 4259 4260 // special CALL handling when cursor node's href is "tel:XXX" 4261 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4262 String text = nativeCursorText(); 4263 if (!nativeCursorIsTextInput() && text != null 4264 && text.startsWith(SCHEME_TEL)) { 4265 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4266 getContext().startActivity(intent); 4267 return true; 4268 } 4269 } 4270 4271 // Bubble up the key event if 4272 // 1. it is a system key; or 4273 // 2. the host application wants to handle it; 4274 // 3. the accessibility injector is present and wants to handle it; 4275 if (event.isSystem() 4276 || mCallbackProxy.uiOverrideKeyEvent(event) 4277 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4278 return false; 4279 } 4280 4281 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4282 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4283 if (pageShouldHandleShiftAndArrows()) { 4284 mShiftIsPressed = false; 4285 } else if (copySelection()) { 4286 selectionDone(); 4287 return true; 4288 } 4289 } 4290 4291 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4292 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4293 if (pageShouldHandleShiftAndArrows()) { 4294 letPageHandleNavKey(keyCode, event.getEventTime(), false); 4295 return true; 4296 } 4297 // always handle the navigation keys in the UI thread 4298 // Bubble up the key event as WebView doesn't handle it 4299 return false; 4300 } 4301 4302 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4303 // remove the long press message first 4304 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4305 mGotCenterDown = false; 4306 4307 if (mSelectingText) { 4308 if (mExtendSelection) { 4309 copySelection(); 4310 selectionDone(); 4311 } else { 4312 mExtendSelection = true; 4313 nativeSetExtendSelection(); 4314 invalidate(); // draw the i-beam instead of the arrow 4315 } 4316 return true; // discard press if copy in progress 4317 } 4318 4319 // perform the single click 4320 Rect visibleRect = sendOurVisibleRect(); 4321 // Note that sendOurVisibleRect calls viewToContent, so the 4322 // coordinates should be in content coordinates. 4323 if (!nativeCursorIntersects(visibleRect)) { 4324 return false; 4325 } 4326 WebViewCore.CursorData data = cursorData(); 4327 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4328 playSoundEffect(SoundEffectConstants.CLICK); 4329 if (nativeCursorIsTextInput()) { 4330 rebuildWebTextView(); 4331 centerKeyPressOnTextField(); 4332 if (inEditingMode()) { 4333 mWebTextView.setDefaultSelection(); 4334 } 4335 return true; 4336 } 4337 clearTextEntry(); 4338 nativeShowCursorTimed(); 4339 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4340 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4341 nativeCursorNodePointer()); 4342 } 4343 return true; 4344 } 4345 4346 // TODO: should we pass all the keys to DOM or check the meta tag 4347 if (nativeCursorWantsKeyEvents() || true) { 4348 // pass the key to DOM 4349 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4350 // return true as DOM handles the key 4351 return true; 4352 } 4353 4354 // Bubble up the key event as WebView doesn't handle it 4355 return false; 4356 } 4357 4358 private void setUpSelect() { 4359 if (0 == mNativeClass) return; // client isn't initialized 4360 if (inFullScreenMode()) return; 4361 if (mSelectingText) return; 4362 mExtendSelection = false; 4363 mSelectingText = mDrawSelectionPointer = true; 4364 // don't let the picture change during text selection 4365 WebViewCore.pauseUpdatePicture(mWebViewCore); 4366 nativeResetSelection(); 4367 if (nativeHasCursorNode()) { 4368 Rect rect = nativeCursorNodeBounds(); 4369 mSelectX = contentToViewX(rect.left); 4370 mSelectY = contentToViewY(rect.top); 4371 } else if (mLastTouchY > getVisibleTitleHeight()) { 4372 mSelectX = mScrollX + (int) mLastTouchX; 4373 mSelectY = mScrollY + (int) mLastTouchY; 4374 } else { 4375 mSelectX = mScrollX + getViewWidth() / 2; 4376 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4377 } 4378 nativeHideCursor(); 4379 mSelectCallback = new SelectActionModeCallback(); 4380 mSelectCallback.setWebView(this); 4381 View titleBar = mTitleBar; 4382 // We do not want to show the embedded title bar during find or 4383 // select, but keep track of it so that it can be replaced when the 4384 // mode is exited. 4385 setEmbeddedTitleBar(null); 4386 mSelectCallback.setTitleBar(titleBar); 4387 startActionMode(mSelectCallback); 4388 } 4389 4390 /** 4391 * Use this method to put the WebView into text selection mode. 4392 * Do not rely on this functionality; it will be deprecated in the future. 4393 */ 4394 public void emulateShiftHeld() { 4395 setUpSelect(); 4396 } 4397 4398 /** 4399 * Select all of the text in this WebView. 4400 */ 4401 void selectAll() { 4402 if (0 == mNativeClass) return; // client isn't initialized 4403 if (inFullScreenMode()) return; 4404 if (!mSelectingText) setUpSelect(); 4405 nativeSelectAll(); 4406 mDrawSelectionPointer = false; 4407 mExtendSelection = true; 4408 invalidate(); 4409 } 4410 4411 /** 4412 * Called when the selection has been removed. 4413 */ 4414 void selectionDone() { 4415 if (mSelectingText) { 4416 mSelectingText = false; 4417 // finish is idempotent, so this is fine even if selectionDone was 4418 // called by mSelectCallback.onDestroyActionMode 4419 mSelectCallback.finish(); 4420 mSelectCallback = null; 4421 WebViewCore.resumeUpdatePicture(mWebViewCore); 4422 invalidate(); // redraw without selection 4423 } 4424 } 4425 4426 /** 4427 * Copy the selection to the clipboard 4428 */ 4429 boolean copySelection() { 4430 boolean copiedSomething = false; 4431 String selection = getSelection(); 4432 if (selection != "") { 4433 if (DebugFlags.WEB_VIEW) { 4434 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4435 } 4436 Toast.makeText(mContext 4437 , com.android.internal.R.string.text_copied 4438 , Toast.LENGTH_SHORT).show(); 4439 copiedSomething = true; 4440 ClipboardManager cm = (ClipboardManager)getContext() 4441 .getSystemService(Context.CLIPBOARD_SERVICE); 4442 cm.setText(selection); 4443 } 4444 invalidate(); // remove selection region and pointer 4445 return copiedSomething; 4446 } 4447 4448 /** 4449 * Returns the currently highlighted text as a string. 4450 */ 4451 String getSelection() { 4452 if (mNativeClass == 0) return ""; 4453 return nativeGetSelection(); 4454 } 4455 4456 @Override 4457 protected void onAttachedToWindow() { 4458 super.onAttachedToWindow(); 4459 if (hasWindowFocus()) setActive(true); 4460 } 4461 4462 @Override 4463 protected void onDetachedFromWindow() { 4464 clearHelpers(); 4465 mZoomManager.dismissZoomPicker(); 4466 if (hasWindowFocus()) setActive(false); 4467 super.onDetachedFromWindow(); 4468 } 4469 4470 @Override 4471 protected void onVisibilityChanged(View changedView, int visibility) { 4472 super.onVisibilityChanged(changedView, visibility); 4473 // The zoomManager may be null if the webview is created from XML that 4474 // specifies the view's visibility param as not visible (see http://b/2794841) 4475 if (visibility != View.VISIBLE && mZoomManager != null) { 4476 mZoomManager.dismissZoomPicker(); 4477 } 4478 } 4479 4480 /** 4481 * @deprecated WebView no longer needs to implement 4482 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4483 */ 4484 @Deprecated 4485 public void onChildViewAdded(View parent, View child) {} 4486 4487 /** 4488 * @deprecated WebView no longer needs to implement 4489 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4490 */ 4491 @Deprecated 4492 public void onChildViewRemoved(View p, View child) {} 4493 4494 /** 4495 * @deprecated WebView should not have implemented 4496 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4497 * does nothing now. 4498 */ 4499 @Deprecated 4500 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4501 } 4502 4503 private void setActive(boolean active) { 4504 if (active) { 4505 if (hasFocus()) { 4506 // If our window regained focus, and we have focus, then begin 4507 // drawing the cursor ring 4508 mDrawCursorRing = true; 4509 setFocusControllerActive(true); 4510 if (mNativeClass != 0) { 4511 nativeRecordButtons(true, false, true); 4512 } 4513 } else { 4514 if (!inEditingMode()) { 4515 // If our window gained focus, but we do not have it, do not 4516 // draw the cursor ring. 4517 mDrawCursorRing = false; 4518 setFocusControllerActive(false); 4519 } 4520 // We do not call nativeRecordButtons here because we assume 4521 // that when we lost focus, or window focus, it got called with 4522 // false for the first parameter 4523 } 4524 } else { 4525 if (!mZoomManager.isZoomPickerVisible()) { 4526 /* 4527 * The external zoom controls come in their own window, so our 4528 * window loses focus. Our policy is to not draw the cursor ring 4529 * if our window is not focused, but this is an exception since 4530 * the user can still navigate the web page with the zoom 4531 * controls showing. 4532 */ 4533 mDrawCursorRing = false; 4534 } 4535 mGotKeyDown = false; 4536 mShiftIsPressed = false; 4537 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4538 mTouchMode = TOUCH_DONE_MODE; 4539 if (mNativeClass != 0) { 4540 nativeRecordButtons(false, false, true); 4541 } 4542 setFocusControllerActive(false); 4543 } 4544 invalidate(); 4545 } 4546 4547 // To avoid drawing the cursor ring, and remove the TextView when our window 4548 // loses focus. 4549 @Override 4550 public void onWindowFocusChanged(boolean hasWindowFocus) { 4551 setActive(hasWindowFocus); 4552 if (hasWindowFocus) { 4553 JWebCoreJavaBridge.setActiveWebView(this); 4554 } else { 4555 JWebCoreJavaBridge.removeActiveWebView(this); 4556 } 4557 super.onWindowFocusChanged(hasWindowFocus); 4558 } 4559 4560 /* 4561 * Pass a message to WebCore Thread, telling the WebCore::Page's 4562 * FocusController to be "inactive" so that it will 4563 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4564 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4565 */ 4566 /* package */ void setFocusControllerActive(boolean active) { 4567 if (mWebViewCore == null) return; 4568 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 4569 } 4570 4571 @Override 4572 protected void onFocusChanged(boolean focused, int direction, 4573 Rect previouslyFocusedRect) { 4574 if (DebugFlags.WEB_VIEW) { 4575 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4576 } 4577 if (focused) { 4578 // When we regain focus, if we have window focus, resume drawing 4579 // the cursor ring 4580 if (hasWindowFocus()) { 4581 mDrawCursorRing = true; 4582 if (mNativeClass != 0) { 4583 nativeRecordButtons(true, false, true); 4584 } 4585 setFocusControllerActive(true); 4586 //} else { 4587 // The WebView has gained focus while we do not have 4588 // windowfocus. When our window lost focus, we should have 4589 // called nativeRecordButtons(false...) 4590 } 4591 } else { 4592 // When we lost focus, unless focus went to the TextView (which is 4593 // true if we are in editing mode), stop drawing the cursor ring. 4594 if (!inEditingMode()) { 4595 mDrawCursorRing = false; 4596 if (mNativeClass != 0) { 4597 nativeRecordButtons(false, false, true); 4598 } 4599 setFocusControllerActive(false); 4600 } 4601 mGotKeyDown = false; 4602 } 4603 4604 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4605 } 4606 4607 /** 4608 * @hide 4609 */ 4610 @Override 4611 protected boolean setFrame(int left, int top, int right, int bottom) { 4612 boolean changed = super.setFrame(left, top, right, bottom); 4613 if (!changed && mHeightCanMeasure) { 4614 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4615 // in WebViewCore after we get the first layout. We do call 4616 // requestLayout() when we get contentSizeChanged(). But the View 4617 // system won't call onSizeChanged if the dimension is not changed. 4618 // In this case, we need to call sendViewSizeZoom() explicitly to 4619 // notify the WebKit about the new dimensions. 4620 sendViewSizeZoom(false); 4621 } 4622 return changed; 4623 } 4624 4625 @Override 4626 protected void onSizeChanged(int w, int h, int ow, int oh) { 4627 super.onSizeChanged(w, h, ow, oh); 4628 4629 // adjust the max viewport width depending on the view dimensions. This 4630 // is to ensure the scaling is not going insane. So do not shrink it if 4631 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4632 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 4633 if (newMaxViewportWidth > sMaxViewportWidth) { 4634 sMaxViewportWidth = newMaxViewportWidth; 4635 } 4636 4637 mZoomManager.onSizeChanged(w, h, ow, oh); 4638 } 4639 4640 @Override 4641 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4642 super.onScrollChanged(l, t, oldl, oldt); 4643 sendOurVisibleRect(); 4644 // update WebKit if visible title bar height changed. The logic is same 4645 // as getVisibleTitleHeight. 4646 int titleHeight = getTitleHeight(); 4647 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4648 sendViewSizeZoom(false); 4649 } 4650 } 4651 4652 @Override 4653 public boolean dispatchKeyEvent(KeyEvent event) { 4654 boolean dispatch = true; 4655 4656 // Textfields, plugins, and contentEditable nodes need to receive the 4657 // shift up key even if another key was released while the shift key 4658 // was held down. 4659 if (!inEditingMode() && (mNativeClass == 0 4660 || !nativePageShouldHandleShiftAndArrows())) { 4661 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4662 mGotKeyDown = true; 4663 } else { 4664 if (!mGotKeyDown) { 4665 /* 4666 * We got a key up for which we were not the recipient of 4667 * the original key down. Don't give it to the view. 4668 */ 4669 dispatch = false; 4670 } 4671 mGotKeyDown = false; 4672 } 4673 } 4674 4675 if (dispatch) { 4676 return super.dispatchKeyEvent(event); 4677 } else { 4678 // We didn't dispatch, so let something else handle the key 4679 return false; 4680 } 4681 } 4682 4683 // Here are the snap align logic: 4684 // 1. If it starts nearly horizontally or vertically, snap align; 4685 // 2. If there is a dramitic direction change, let it go; 4686 // 3. If there is a same direction back and forth, lock it. 4687 4688 // adjustable parameters 4689 private int mMinLockSnapReverseDistance; 4690 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4691 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4692 4693 private static int sign(float x) { 4694 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4695 } 4696 4697 // if the page can scroll <= this value, we won't allow the drag tracker 4698 // to have any effect. 4699 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4700 4701 private class DragTrackerHandler { 4702 private final DragTracker mProxy; 4703 private final float mStartY, mStartX; 4704 private final float mMinDY, mMinDX; 4705 private final float mMaxDY, mMaxDX; 4706 private float mCurrStretchY, mCurrStretchX; 4707 private int mSX, mSY; 4708 private Interpolator mInterp; 4709 private float[] mXY = new float[2]; 4710 4711 // inner (non-state) classes can't have enums :( 4712 private static final int DRAGGING_STATE = 0; 4713 private static final int ANIMATING_STATE = 1; 4714 private static final int FINISHED_STATE = 2; 4715 private int mState; 4716 4717 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4718 mProxy = proxy; 4719 4720 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4721 int viewTop = getScrollY(); 4722 int viewBottom = viewTop + getHeight(); 4723 4724 mStartY = y; 4725 mMinDY = -viewTop; 4726 mMaxDY = docBottom - viewBottom; 4727 4728 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4729 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4730 " up/down= " + mMinDY + " " + mMaxDY); 4731 } 4732 4733 int docRight = computeHorizontalScrollRange(); 4734 int viewLeft = getScrollX(); 4735 int viewRight = viewLeft + getWidth(); 4736 mStartX = x; 4737 mMinDX = -viewLeft; 4738 mMaxDX = docRight - viewRight; 4739 4740 mState = DRAGGING_STATE; 4741 mProxy.onStartDrag(x, y); 4742 4743 // ensure we buildBitmap at least once 4744 mSX = -99999; 4745 } 4746 4747 private float computeStretch(float delta, float min, float max) { 4748 float stretch = 0; 4749 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4750 if (delta < min) { 4751 stretch = delta - min; 4752 } else if (delta > max) { 4753 stretch = delta - max; 4754 } 4755 } 4756 return stretch; 4757 } 4758 4759 public void dragTo(float x, float y) { 4760 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4761 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4762 4763 if ((mSnapScrollMode & SNAP_X) != 0) { 4764 sy = 0; 4765 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4766 sx = 0; 4767 } 4768 4769 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4770 mCurrStretchX = sx; 4771 mCurrStretchY = sy; 4772 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4773 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4774 " " + sy); 4775 } 4776 if (mProxy.onStretchChange(sx, sy)) { 4777 invalidate(); 4778 } 4779 } 4780 } 4781 4782 public void stopDrag() { 4783 final int DURATION = 200; 4784 int now = (int)SystemClock.uptimeMillis(); 4785 mInterp = new Interpolator(2); 4786 mXY[0] = mCurrStretchX; 4787 mXY[1] = mCurrStretchY; 4788 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4789 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4790 mInterp.setKeyFrame(0, now, mXY, blend); 4791 float[] zerozero = new float[] { 0, 0 }; 4792 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4793 mState = ANIMATING_STATE; 4794 4795 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4796 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4797 } 4798 } 4799 4800 // Call this after each draw. If it ruturns null, the tracker is done 4801 public boolean isFinished() { 4802 return mState == FINISHED_STATE; 4803 } 4804 4805 private int hiddenHeightOfTitleBar() { 4806 return getTitleHeight() - getVisibleTitleHeight(); 4807 } 4808 4809 // need a way to know if 565 or 8888 is the right config for 4810 // capturing the display and giving it to the drag proxy 4811 private Bitmap.Config offscreenBitmapConfig() { 4812 // hard code 565 for now 4813 return Bitmap.Config.RGB_565; 4814 } 4815 4816 /* If the tracker draws, then this returns true, otherwise it will 4817 return false, and draw nothing. 4818 */ 4819 public boolean draw(Canvas canvas) { 4820 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4821 int sx = getScrollX(); 4822 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4823 if (mSX != sx || mSY != sy) { 4824 buildBitmap(sx, sy); 4825 mSX = sx; 4826 mSY = sy; 4827 } 4828 4829 if (mState == ANIMATING_STATE) { 4830 Interpolator.Result result = mInterp.timeToValues(mXY); 4831 if (result == Interpolator.Result.FREEZE_END) { 4832 mState = FINISHED_STATE; 4833 return false; 4834 } else { 4835 mProxy.onStretchChange(mXY[0], mXY[1]); 4836 invalidate(); 4837 // fall through to the draw 4838 } 4839 } 4840 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4841 canvas.translate(sx, sy); 4842 mProxy.onDraw(canvas); 4843 canvas.restoreToCount(count); 4844 return true; 4845 } 4846 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4847 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4848 mCurrStretchX + " " + mCurrStretchY); 4849 } 4850 return false; 4851 } 4852 4853 private void buildBitmap(int sx, int sy) { 4854 int w = getWidth(); 4855 int h = getViewHeight(); 4856 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4857 Canvas canvas = new Canvas(bm); 4858 canvas.translate(-sx, -sy); 4859 drawContent(canvas); 4860 4861 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4862 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4863 " " + sy + " " + w + " " + h); 4864 } 4865 mProxy.onBitmapChange(bm); 4866 } 4867 } 4868 4869 /** @hide */ 4870 public static class DragTracker { 4871 public void onStartDrag(float x, float y) {} 4872 public boolean onStretchChange(float sx, float sy) { 4873 // return true to have us inval the view 4874 return false; 4875 } 4876 public void onStopDrag() {} 4877 public void onBitmapChange(Bitmap bm) {} 4878 public void onDraw(Canvas canvas) {} 4879 } 4880 4881 /** @hide */ 4882 public DragTracker getDragTracker() { 4883 return mDragTracker; 4884 } 4885 4886 /** @hide */ 4887 public void setDragTracker(DragTracker tracker) { 4888 mDragTracker = tracker; 4889 } 4890 4891 private DragTracker mDragTracker; 4892 private DragTrackerHandler mDragTrackerHandler; 4893 4894 private boolean hitFocusedPlugin(int contentX, int contentY) { 4895 if (DebugFlags.WEB_VIEW) { 4896 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4897 Rect r = nativeFocusNodeBounds(); 4898 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4899 + ", " + r.right + ", " + r.bottom + ")"); 4900 } 4901 return nativeFocusIsPlugin() 4902 && nativeFocusNodeBounds().contains(contentX, contentY); 4903 } 4904 4905 private boolean shouldForwardTouchEvent() { 4906 return mFullScreenHolder != null || (mForwardTouchEvents 4907 && !mSelectingText 4908 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4909 } 4910 4911 private boolean inFullScreenMode() { 4912 return mFullScreenHolder != null; 4913 } 4914 4915 private void dismissFullScreenMode() { 4916 if (inFullScreenMode()) { 4917 mFullScreenHolder.dismiss(); 4918 mFullScreenHolder = null; 4919 } 4920 } 4921 4922 void onPinchToZoomAnimationStart() { 4923 // cancel the single touch handling 4924 cancelTouch(); 4925 onZoomAnimationStart(); 4926 } 4927 4928 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 4929 onZoomAnimationEnd(); 4930 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 4931 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 4932 // as it may trigger the unwanted fling. 4933 mTouchMode = TOUCH_PINCH_DRAG; 4934 mConfirmMove = true; 4935 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 4936 } 4937 4938 private void startScrollingLayer(float gestureX, float gestureY) { 4939 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4940 int contentX = viewToContentX((int) gestureX + mScrollX); 4941 int contentY = viewToContentY((int) gestureY + mScrollY); 4942 mScrollingLayer = nativeScrollableLayer(contentX, contentY); 4943 if (mScrollingLayer != 0) { 4944 mTouchMode = TOUCH_DRAG_LAYER_MODE; 4945 } 4946 } 4947 } 4948 4949 // 1/(density * density) used to compute the distance between points. 4950 // Computed in init(). 4951 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 4952 4953 // The distance between two points reported in onTouchEvent scaled by the 4954 // density of the screen. 4955 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 4956 4957 @Override 4958 public boolean onTouchEvent(MotionEvent ev) { 4959 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 4960 return false; 4961 } 4962 4963 if (DebugFlags.WEB_VIEW) { 4964 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 4965 + " mTouchMode=" + mTouchMode 4966 + " numPointers=" + ev.getPointerCount()); 4967 } 4968 4969 int action = ev.getAction(); 4970 float x = ev.getX(); 4971 float y = ev.getY(); 4972 long eventTime = ev.getEventTime(); 4973 4974 final ScaleGestureDetector detector = 4975 mZoomManager.getMultiTouchGestureDetector(); 4976 boolean skipScaleGesture = false; 4977 // Set to the mid-point of a two-finger gesture used to detect if the 4978 // user has touched a layer. 4979 float gestureX = x; 4980 float gestureY = y; 4981 if (detector == null || !detector.isInProgress()) { 4982 // The gesture for scrolling a layer is two fingers close together. 4983 // FIXME: we may consider giving WebKit an option to handle 4984 // multi-touch events later. 4985 if (ev.getPointerCount() > 1) { 4986 float dx = ev.getX(1) - ev.getX(0); 4987 float dy = ev.getY(1) - ev.getY(0); 4988 float dist = (dx * dx + dy * dy) * 4989 DRAG_LAYER_INVERSE_DENSITY_SQUARED; 4990 // Use the approximate center to determine if the gesture is in 4991 // a layer. 4992 gestureX = ev.getX(0) + (dx * .5f); 4993 gestureY = ev.getY(0) + (dy * .5f); 4994 // Now use a consistent point for tracking movement. 4995 if (ev.getX(0) < ev.getX(1)) { 4996 x = ev.getX(0); 4997 y = ev.getY(0); 4998 } else { 4999 x = ev.getX(1); 5000 y = ev.getY(1); 5001 } 5002 action = ev.getActionMasked(); 5003 if (dist < DRAG_LAYER_FINGER_DISTANCE) { 5004 skipScaleGesture = true; 5005 } else if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5006 // Fingers moved too far apart while dragging, the user 5007 // might be trying to zoom. 5008 mTouchMode = TOUCH_INIT_MODE; 5009 } 5010 } 5011 } 5012 5013 // If the page disallows zoom, pass multi-pointer events to webkit. 5014 if (ev.getPointerCount() > 1 5015 && (mZoomManager.isZoomScaleFixed() || mDeferMultitouch)) { 5016 if (DebugFlags.WEB_VIEW) { 5017 Log.v(LOGTAG, "passing " + ev.getPointerCount() + " points to webkit"); 5018 } 5019 passMultiTouchToWebKit(ev); 5020 return true; 5021 } 5022 5023 if (mZoomManager.supportsMultiTouchZoom() && ev.getPointerCount() > 1 && 5024 mTouchMode != TOUCH_DRAG_LAYER_MODE && !skipScaleGesture) { 5025 if (!detector.isInProgress() && 5026 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 5027 // Insert a fake pointer down event in order to start 5028 // the zoom scale detector. 5029 MotionEvent temp = MotionEvent.obtain(ev); 5030 // Clear the original event and set it to 5031 // ACTION_POINTER_DOWN. 5032 try { 5033 temp.setAction(temp.getAction() & 5034 ~MotionEvent.ACTION_MASK | 5035 MotionEvent.ACTION_POINTER_DOWN); 5036 detector.onTouchEvent(temp); 5037 } finally { 5038 temp.recycle(); 5039 } 5040 } 5041 5042 detector.onTouchEvent(ev); 5043 5044 if (detector.isInProgress()) { 5045 mLastTouchTime = eventTime; 5046 cancelLongPress(); 5047 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5048 if (!mZoomManager.supportsPanDuringZoom()) { 5049 return true; 5050 } 5051 mTouchMode = TOUCH_DRAG_MODE; 5052 if (mVelocityTracker == null) { 5053 mVelocityTracker = VelocityTracker.obtain(); 5054 } 5055 } 5056 5057 x = detector.getFocusX(); 5058 y = detector.getFocusY(); 5059 action = ev.getAction() & MotionEvent.ACTION_MASK; 5060 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5061 cancelTouch(); 5062 action = MotionEvent.ACTION_DOWN; 5063 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5064 // set mLastTouchX/Y to the remaining point 5065 mLastTouchX = x; 5066 mLastTouchY = y; 5067 } else if (action == MotionEvent.ACTION_MOVE) { 5068 // negative x or y indicate it is on the edge, skip it. 5069 if (x < 0 || y < 0) { 5070 return true; 5071 } 5072 } 5073 } 5074 5075 // Due to the touch screen edge effect, a touch closer to the edge 5076 // always snapped to the edge. As getViewWidth() can be different from 5077 // getWidth() due to the scrollbar, adjusting the point to match 5078 // getViewWidth(). Same applied to the height. 5079 x = Math.min(x, getViewWidth() - 1); 5080 y = Math.min(y, getViewHeightWithTitle() - 1); 5081 5082 float fDeltaX = mLastTouchX - x; 5083 float fDeltaY = mLastTouchY - y; 5084 int deltaX = (int) fDeltaX; 5085 int deltaY = (int) fDeltaY; 5086 int contentX = viewToContentX((int) x + mScrollX); 5087 int contentY = viewToContentY((int) y + mScrollY); 5088 5089 switch (action) { 5090 case MotionEvent.ACTION_DOWN: { 5091 mPreventDefault = PREVENT_DEFAULT_NO; 5092 mConfirmMove = false; 5093 if (!mScroller.isFinished()) { 5094 // stop the current scroll animation, but if this is 5095 // the start of a fling, allow it to add to the current 5096 // fling's velocity 5097 mScroller.abortAnimation(); 5098 mTouchMode = TOUCH_DRAG_START_MODE; 5099 mConfirmMove = true; 5100 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5101 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5102 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5103 if (getSettings().supportTouchOnly()) { 5104 removeTouchHighlight(true); 5105 } 5106 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5107 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5108 } else { 5109 // commit the short press action for the previous tap 5110 doShortPress(); 5111 mTouchMode = TOUCH_INIT_MODE; 5112 mDeferTouchProcess = (!inFullScreenMode() 5113 && mForwardTouchEvents) ? hitFocusedPlugin( 5114 contentX, contentY) : false; 5115 } 5116 } else { // the normal case 5117 mTouchMode = TOUCH_INIT_MODE; 5118 mDeferTouchProcess = (!inFullScreenMode() 5119 && mForwardTouchEvents) ? hitFocusedPlugin( 5120 contentX, contentY) : false; 5121 mWebViewCore.sendMessage( 5122 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5123 if (getSettings().supportTouchOnly()) { 5124 TouchHighlightData data = new TouchHighlightData(); 5125 data.mX = contentX; 5126 data.mY = contentY; 5127 data.mSlop = viewToContentDimension(mNavSlop); 5128 mWebViewCore.sendMessageDelayed( 5129 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5130 ViewConfiguration.getTapTimeout()); 5131 if (DEBUG_TOUCH_HIGHLIGHT) { 5132 if (getSettings().getNavDump()) { 5133 mTouchHighlightX = (int) x + mScrollX; 5134 mTouchHighlightY = (int) y + mScrollY; 5135 mPrivateHandler.postDelayed(new Runnable() { 5136 public void run() { 5137 mTouchHighlightX = mTouchHighlightY = 0; 5138 invalidate(); 5139 } 5140 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5141 } 5142 } 5143 } 5144 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5145 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5146 (eventTime - mLastTouchUpTime), eventTime); 5147 } 5148 if (mSelectingText) { 5149 mDrawSelectionPointer = false; 5150 mSelectionStarted = nativeStartSelection(contentX, contentY); 5151 if (DebugFlags.WEB_VIEW) { 5152 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5153 } 5154 invalidate(); 5155 } 5156 } 5157 // Trigger the link 5158 if (mTouchMode == TOUCH_INIT_MODE 5159 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5160 mPrivateHandler.sendEmptyMessageDelayed( 5161 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5162 mPrivateHandler.sendEmptyMessageDelayed( 5163 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5164 if (inFullScreenMode() || mDeferTouchProcess) { 5165 mPreventDefault = PREVENT_DEFAULT_YES; 5166 } else if (mForwardTouchEvents) { 5167 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5168 } else { 5169 mPreventDefault = PREVENT_DEFAULT_NO; 5170 } 5171 // pass the touch events from UI thread to WebCore thread 5172 if (shouldForwardTouchEvent()) { 5173 TouchEventData ted = new TouchEventData(); 5174 ted.mAction = action; 5175 ted.mPoints = new Point[1]; 5176 ted.mPoints[0] = new Point(contentX, contentY); 5177 ted.mMetaState = ev.getMetaState(); 5178 ted.mReprocess = mDeferTouchProcess; 5179 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5180 if (mDeferTouchProcess) { 5181 // still needs to set them for compute deltaX/Y 5182 mLastTouchX = x; 5183 mLastTouchY = y; 5184 break; 5185 } 5186 if (!inFullScreenMode()) { 5187 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5188 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5189 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5190 action, 0), TAP_TIMEOUT); 5191 } 5192 } 5193 } 5194 startTouch(x, y, eventTime); 5195 break; 5196 } 5197 case MotionEvent.ACTION_MOVE: { 5198 boolean firstMove = false; 5199 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5200 >= mTouchSlopSquare) { 5201 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5202 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5203 mConfirmMove = true; 5204 firstMove = true; 5205 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5206 mTouchMode = TOUCH_INIT_MODE; 5207 } 5208 if (getSettings().supportTouchOnly()) { 5209 removeTouchHighlight(true); 5210 } 5211 } 5212 // pass the touch events from UI thread to WebCore thread 5213 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5214 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5215 TouchEventData ted = new TouchEventData(); 5216 ted.mAction = action; 5217 ted.mPoints = new Point[1]; 5218 ted.mPoints[0] = new Point(contentX, contentY); 5219 ted.mMetaState = ev.getMetaState(); 5220 ted.mReprocess = mDeferTouchProcess; 5221 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5222 mLastSentTouchTime = eventTime; 5223 if (mDeferTouchProcess) { 5224 break; 5225 } 5226 if (firstMove && !inFullScreenMode()) { 5227 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5228 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5229 action, 0), TAP_TIMEOUT); 5230 } 5231 } 5232 if (mTouchMode == TOUCH_DONE_MODE 5233 || mPreventDefault == PREVENT_DEFAULT_YES) { 5234 // no dragging during scroll zoom animation, or when prevent 5235 // default is yes 5236 break; 5237 } 5238 if (mVelocityTracker == null) { 5239 Log.e(LOGTAG, "Got null mVelocityTracker when " 5240 + "mPreventDefault = " + mPreventDefault 5241 + " mDeferTouchProcess = " + mDeferTouchProcess 5242 + " mTouchMode = " + mTouchMode); 5243 } 5244 mVelocityTracker.addMovement(ev); 5245 if (mSelectingText && mSelectionStarted) { 5246 if (DebugFlags.WEB_VIEW) { 5247 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5248 } 5249 nativeExtendSelection(contentX, contentY); 5250 invalidate(); 5251 break; 5252 } 5253 5254 if (mTouchMode != TOUCH_DRAG_MODE && 5255 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5256 5257 if (!mConfirmMove) { 5258 break; 5259 } 5260 5261 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5262 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5263 // track mLastTouchTime as we may need to do fling at 5264 // ACTION_UP 5265 mLastTouchTime = eventTime; 5266 break; 5267 } 5268 5269 // Only lock dragging to one axis if we don't have a scale in progress. 5270 // Scaling implies free-roaming movement. Note this is only ever a question 5271 // if mZoomManager.supportsPanDuringZoom() is true. 5272 if (detector != null && !detector.isInProgress()) { 5273 // if it starts nearly horizontal or vertical, enforce it 5274 int ax = Math.abs(deltaX); 5275 int ay = Math.abs(deltaY); 5276 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5277 mSnapScrollMode = SNAP_X; 5278 mSnapPositive = deltaX > 0; 5279 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5280 mSnapScrollMode = SNAP_Y; 5281 mSnapPositive = deltaY > 0; 5282 } 5283 } 5284 5285 mTouchMode = TOUCH_DRAG_MODE; 5286 mLastTouchX = x; 5287 mLastTouchY = y; 5288 fDeltaX = 0.0f; 5289 fDeltaY = 0.0f; 5290 deltaX = 0; 5291 deltaY = 0; 5292 5293 if (skipScaleGesture) { 5294 startScrollingLayer(gestureX, gestureY); 5295 } 5296 startDrag(); 5297 } 5298 5299 if (mDragTrackerHandler != null) { 5300 mDragTrackerHandler.dragTo(x, y); 5301 } 5302 5303 // do pan 5304 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5305 int newScrollX = pinLocX(mScrollX + deltaX); 5306 int newDeltaX = newScrollX - mScrollX; 5307 if (deltaX != newDeltaX) { 5308 deltaX = newDeltaX; 5309 fDeltaX = (float) newDeltaX; 5310 } 5311 int newScrollY = pinLocY(mScrollY + deltaY); 5312 int newDeltaY = newScrollY - mScrollY; 5313 if (deltaY != newDeltaY) { 5314 deltaY = newDeltaY; 5315 fDeltaY = (float) newDeltaY; 5316 } 5317 } 5318 boolean done = false; 5319 boolean keepScrollBarsVisible = false; 5320 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5321 mLastTouchX = x; 5322 mLastTouchY = y; 5323 keepScrollBarsVisible = done = true; 5324 } else { 5325 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5326 int ax = Math.abs(deltaX); 5327 int ay = Math.abs(deltaY); 5328 if (mSnapScrollMode == SNAP_X) { 5329 // radical change means getting out of snap mode 5330 if (ay > MAX_SLOPE_FOR_DIAG * ax 5331 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5332 mSnapScrollMode = SNAP_NONE; 5333 } 5334 // reverse direction means lock in the snap mode 5335 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5336 (mSnapPositive 5337 ? deltaX < -mMinLockSnapReverseDistance 5338 : deltaX > mMinLockSnapReverseDistance)) { 5339 mSnapScrollMode |= SNAP_LOCK; 5340 } 5341 } else { 5342 // radical change means getting out of snap mode 5343 if (ax > MAX_SLOPE_FOR_DIAG * ay 5344 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5345 mSnapScrollMode = SNAP_NONE; 5346 } 5347 // reverse direction means lock in the snap mode 5348 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5349 (mSnapPositive 5350 ? deltaY < -mMinLockSnapReverseDistance 5351 : deltaY > mMinLockSnapReverseDistance)) { 5352 mSnapScrollMode |= SNAP_LOCK; 5353 } 5354 } 5355 } 5356 if (mSnapScrollMode != SNAP_NONE) { 5357 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5358 deltaY = 0; 5359 } else { 5360 deltaX = 0; 5361 } 5362 } 5363 if ((deltaX | deltaY) != 0) { 5364 if (deltaX != 0) { 5365 mLastTouchX = x; 5366 } 5367 if (deltaY != 0) { 5368 mLastTouchY = y; 5369 } 5370 mHeldMotionless = MOTIONLESS_FALSE; 5371 } else { 5372 // keep the scrollbar on the screen even there is no 5373 // scroll 5374 mLastTouchX = x; 5375 mLastTouchY = y; 5376 keepScrollBarsVisible = true; 5377 } 5378 mLastTouchTime = eventTime; 5379 mUserScroll = true; 5380 } 5381 5382 doDrag(deltaX, deltaY); 5383 5384 // Turn off scrollbars when dragging a layer. 5385 if (keepScrollBarsVisible && 5386 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5387 if (mHeldMotionless != MOTIONLESS_TRUE) { 5388 mHeldMotionless = MOTIONLESS_TRUE; 5389 invalidate(); 5390 } 5391 // keep the scrollbar on the screen even there is no scroll 5392 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5393 false); 5394 // return false to indicate that we can't pan out of the 5395 // view space 5396 return !done; 5397 } 5398 break; 5399 } 5400 case MotionEvent.ACTION_UP: { 5401 if (!isFocused()) requestFocus(); 5402 // pass the touch events from UI thread to WebCore thread 5403 if (shouldForwardTouchEvent()) { 5404 TouchEventData ted = new TouchEventData(); 5405 ted.mAction = action; 5406 ted.mPoints = new Point[1]; 5407 ted.mPoints[0] = new Point(contentX, contentY); 5408 ted.mMetaState = ev.getMetaState(); 5409 ted.mReprocess = mDeferTouchProcess; 5410 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5411 } 5412 mLastTouchUpTime = eventTime; 5413 switch (mTouchMode) { 5414 case TOUCH_DOUBLE_TAP_MODE: // double tap 5415 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5416 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5417 if (inFullScreenMode() || mDeferTouchProcess) { 5418 TouchEventData ted = new TouchEventData(); 5419 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5420 ted.mPoints = new Point[1]; 5421 ted.mPoints[0] = new Point(contentX, contentY); 5422 ted.mMetaState = ev.getMetaState(); 5423 ted.mReprocess = mDeferTouchProcess; 5424 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5425 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5426 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5427 mTouchMode = TOUCH_DONE_MODE; 5428 } 5429 break; 5430 case TOUCH_INIT_MODE: // tap 5431 case TOUCH_SHORTPRESS_START_MODE: 5432 case TOUCH_SHORTPRESS_MODE: 5433 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5434 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5435 if (mConfirmMove) { 5436 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5437 " WebCore's response for touch down."); 5438 if (mPreventDefault != PREVENT_DEFAULT_YES 5439 && (computeMaxScrollX() > 0 5440 || computeMaxScrollY() > 0)) { 5441 // If the user has performed a very quick touch 5442 // sequence it is possible that we may get here 5443 // before WebCore has had a chance to process the events. 5444 // In this case, any call to preventDefault in the 5445 // JS touch handler will not have been executed yet. 5446 // Hence we will see both the UI (now) and WebCore 5447 // (when context switches) handling the event, 5448 // regardless of whether the web developer actually 5449 // doeses preventDefault in their touch handler. This 5450 // is the nature of our asynchronous touch model. 5451 5452 // we will not rewrite drag code here, but we 5453 // will try fling if it applies. 5454 WebViewCore.reducePriority(); 5455 // to get better performance, pause updating the 5456 // picture 5457 WebViewCore.pauseUpdatePicture(mWebViewCore); 5458 // fall through to TOUCH_DRAG_MODE 5459 } else { 5460 // WebKit may consume the touch event and modify 5461 // DOM. drawContentPicture() will be called with 5462 // animateSroll as true for better performance. 5463 // Force redraw in high-quality. 5464 invalidate(); 5465 break; 5466 } 5467 } else { 5468 if (mSelectingText) { 5469 // tapping on selection or controls does nothing 5470 if (!nativeHitSelection(contentX, contentY)) { 5471 selectionDone(); 5472 } 5473 break; 5474 } 5475 // only trigger double tap if the WebView is 5476 // scalable 5477 if (mTouchMode == TOUCH_INIT_MODE 5478 && (canZoomIn() || canZoomOut())) { 5479 mPrivateHandler.sendEmptyMessageDelayed( 5480 RELEASE_SINGLE_TAP, ViewConfiguration 5481 .getDoubleTapTimeout()); 5482 } else { 5483 doShortPress(); 5484 } 5485 break; 5486 } 5487 case TOUCH_DRAG_MODE: 5488 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5489 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5490 // if the user waits a while w/o moving before the 5491 // up, we don't want to do a fling 5492 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5493 if (mVelocityTracker == null) { 5494 Log.e(LOGTAG, "Got null mVelocityTracker when " 5495 + "mPreventDefault = " 5496 + mPreventDefault 5497 + " mDeferTouchProcess = " 5498 + mDeferTouchProcess); 5499 } 5500 mVelocityTracker.addMovement(ev); 5501 // set to MOTIONLESS_IGNORE so that it won't keep 5502 // removing and sending message in 5503 // drawCoreAndCursorRing() 5504 mHeldMotionless = MOTIONLESS_IGNORE; 5505 doFling(); 5506 break; 5507 } 5508 // redraw in high-quality, as we're done dragging 5509 mHeldMotionless = MOTIONLESS_TRUE; 5510 invalidate(); 5511 // fall through 5512 case TOUCH_DRAG_START_MODE: 5513 case TOUCH_DRAG_LAYER_MODE: 5514 // TOUCH_DRAG_START_MODE should not happen for the real 5515 // device as we almost certain will get a MOVE. But this 5516 // is possible on emulator. 5517 mLastVelocity = 0; 5518 WebViewCore.resumePriority(); 5519 WebViewCore.resumeUpdatePicture(mWebViewCore); 5520 break; 5521 } 5522 stopTouch(); 5523 break; 5524 } 5525 case MotionEvent.ACTION_CANCEL: { 5526 if (mTouchMode == TOUCH_DRAG_MODE) { 5527 invalidate(); 5528 } 5529 cancelWebCoreTouchEvent(contentX, contentY, false); 5530 cancelTouch(); 5531 break; 5532 } 5533 } 5534 return true; 5535 } 5536 5537 private void passMultiTouchToWebKit(MotionEvent ev) { 5538 TouchEventData ted = new TouchEventData(); 5539 ted.mAction = ev.getAction() & MotionEvent.ACTION_MASK; 5540 final int count = ev.getPointerCount(); 5541 ted.mPoints = new Point[count]; 5542 for (int c = 0; c < count; c++) { 5543 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5544 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5545 ted.mPoints[c] = new Point(x, y); 5546 } 5547 ted.mMetaState = ev.getMetaState(); 5548 ted.mReprocess = mDeferTouchProcess; 5549 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5550 cancelLongPress(); 5551 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5552 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5553 } 5554 5555 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5556 if (shouldForwardTouchEvent()) { 5557 if (removeEvents) { 5558 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5559 } 5560 TouchEventData ted = new TouchEventData(); 5561 ted.mPoints = new Point[1]; 5562 ted.mPoints[0] = new Point(x, y); 5563 ted.mAction = MotionEvent.ACTION_CANCEL; 5564 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5565 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5566 } 5567 } 5568 5569 private void startTouch(float x, float y, long eventTime) { 5570 // Remember where the motion event started 5571 mLastTouchX = x; 5572 mLastTouchY = y; 5573 mLastTouchTime = eventTime; 5574 mVelocityTracker = VelocityTracker.obtain(); 5575 mSnapScrollMode = SNAP_NONE; 5576 if (mDragTracker != null) { 5577 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5578 } 5579 } 5580 5581 private void startDrag() { 5582 WebViewCore.reducePriority(); 5583 // to get better performance, pause updating the picture 5584 WebViewCore.pauseUpdatePicture(mWebViewCore); 5585 if (!mDragFromTextInput) { 5586 nativeHideCursor(); 5587 } 5588 5589 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5590 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 5591 mZoomManager.invokeZoomPicker(); 5592 } 5593 } 5594 5595 private void doDrag(int deltaX, int deltaY) { 5596 if ((deltaX | deltaY) != 0) { 5597 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5598 deltaX = viewToContentDimension(deltaX); 5599 deltaY = viewToContentDimension(deltaY); 5600 if (nativeScrollLayer(mScrollingLayer, deltaX, deltaY)) { 5601 invalidate(); 5602 } 5603 return; 5604 } 5605 scrollBy(deltaX, deltaY); 5606 } 5607 mZoomManager.keepZoomPickerVisible(); 5608 } 5609 5610 private void stopTouch() { 5611 if (mDragTrackerHandler != null) { 5612 mDragTrackerHandler.stopDrag(); 5613 } 5614 // we also use mVelocityTracker == null to tell us that we are 5615 // not "moving around", so we can take the slower/prettier 5616 // mode in the drawing code 5617 if (mVelocityTracker != null) { 5618 mVelocityTracker.recycle(); 5619 mVelocityTracker = null; 5620 } 5621 } 5622 5623 private void cancelTouch() { 5624 if (mDragTrackerHandler != null) { 5625 mDragTrackerHandler.stopDrag(); 5626 } 5627 // we also use mVelocityTracker == null to tell us that we are 5628 // not "moving around", so we can take the slower/prettier 5629 // mode in the drawing code 5630 if (mVelocityTracker != null) { 5631 mVelocityTracker.recycle(); 5632 mVelocityTracker = null; 5633 } 5634 if (mTouchMode == TOUCH_DRAG_MODE || 5635 mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5636 WebViewCore.resumePriority(); 5637 WebViewCore.resumeUpdatePicture(mWebViewCore); 5638 } 5639 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5640 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5641 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5642 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5643 if (getSettings().supportTouchOnly()) { 5644 removeTouchHighlight(true); 5645 } 5646 mHeldMotionless = MOTIONLESS_TRUE; 5647 mTouchMode = TOUCH_DONE_MODE; 5648 nativeHideCursor(); 5649 } 5650 5651 private long mTrackballFirstTime = 0; 5652 private long mTrackballLastTime = 0; 5653 private float mTrackballRemainsX = 0.0f; 5654 private float mTrackballRemainsY = 0.0f; 5655 private int mTrackballXMove = 0; 5656 private int mTrackballYMove = 0; 5657 private boolean mSelectingText = false; 5658 private boolean mSelectionStarted = false; 5659 private boolean mExtendSelection = false; 5660 private boolean mDrawSelectionPointer = false; 5661 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5662 private static final int TRACKBALL_TIMEOUT = 200; 5663 private static final int TRACKBALL_WAIT = 100; 5664 private static final int TRACKBALL_SCALE = 400; 5665 private static final int TRACKBALL_SCROLL_COUNT = 5; 5666 private static final int TRACKBALL_MOVE_COUNT = 10; 5667 private static final int TRACKBALL_MULTIPLIER = 3; 5668 private static final int SELECT_CURSOR_OFFSET = 16; 5669 private int mSelectX = 0; 5670 private int mSelectY = 0; 5671 private boolean mFocusSizeChanged = false; 5672 private boolean mShiftIsPressed = false; 5673 private boolean mTrackballDown = false; 5674 private long mTrackballUpTime = 0; 5675 private long mLastCursorTime = 0; 5676 private Rect mLastCursorBounds; 5677 5678 // Set by default; BrowserActivity clears to interpret trackball data 5679 // directly for movement. Currently, the framework only passes 5680 // arrow key events, not trackball events, from one child to the next 5681 private boolean mMapTrackballToArrowKeys = true; 5682 5683 public void setMapTrackballToArrowKeys(boolean setMap) { 5684 mMapTrackballToArrowKeys = setMap; 5685 } 5686 5687 void resetTrackballTime() { 5688 mTrackballLastTime = 0; 5689 } 5690 5691 @Override 5692 public boolean onTrackballEvent(MotionEvent ev) { 5693 long time = ev.getEventTime(); 5694 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5695 if (ev.getY() > 0) pageDown(true); 5696 if (ev.getY() < 0) pageUp(true); 5697 return true; 5698 } 5699 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5700 if (mSelectingText) { 5701 return true; // discard press if copy in progress 5702 } 5703 mTrackballDown = true; 5704 if (mNativeClass == 0) { 5705 return false; 5706 } 5707 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5708 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5709 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5710 nativeSelectBestAt(mLastCursorBounds); 5711 } 5712 if (DebugFlags.WEB_VIEW) { 5713 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5714 + " time=" + time 5715 + " mLastCursorTime=" + mLastCursorTime); 5716 } 5717 if (isInTouchMode()) requestFocusFromTouch(); 5718 return false; // let common code in onKeyDown at it 5719 } 5720 if (ev.getAction() == MotionEvent.ACTION_UP) { 5721 // LONG_PRESS_CENTER is set in common onKeyDown 5722 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5723 mTrackballDown = false; 5724 mTrackballUpTime = time; 5725 if (mSelectingText) { 5726 if (mExtendSelection) { 5727 copySelection(); 5728 selectionDone(); 5729 } else { 5730 mExtendSelection = true; 5731 nativeSetExtendSelection(); 5732 invalidate(); // draw the i-beam instead of the arrow 5733 } 5734 return true; // discard press if copy in progress 5735 } 5736 if (DebugFlags.WEB_VIEW) { 5737 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5738 + " time=" + time 5739 ); 5740 } 5741 return false; // let common code in onKeyUp at it 5742 } 5743 if ((mMapTrackballToArrowKeys && mShiftIsPressed == false) || 5744 (mAccessibilityInjector != null || mAccessibilityScriptInjected)) { 5745 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5746 return false; 5747 } 5748 if (mTrackballDown) { 5749 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5750 return true; // discard move if trackball is down 5751 } 5752 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5753 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5754 return true; 5755 } 5756 // TODO: alternatively we can do panning as touch does 5757 switchOutDrawHistory(); 5758 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5759 if (DebugFlags.WEB_VIEW) { 5760 Log.v(LOGTAG, "onTrackballEvent time=" 5761 + time + " last=" + mTrackballLastTime); 5762 } 5763 mTrackballFirstTime = time; 5764 mTrackballXMove = mTrackballYMove = 0; 5765 } 5766 mTrackballLastTime = time; 5767 if (DebugFlags.WEB_VIEW) { 5768 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5769 } 5770 mTrackballRemainsX += ev.getX(); 5771 mTrackballRemainsY += ev.getY(); 5772 doTrackball(time); 5773 return true; 5774 } 5775 5776 void moveSelection(float xRate, float yRate) { 5777 if (mNativeClass == 0) 5778 return; 5779 int width = getViewWidth(); 5780 int height = getViewHeight(); 5781 mSelectX += xRate; 5782 mSelectY += yRate; 5783 int maxX = width + mScrollX; 5784 int maxY = height + mScrollY; 5785 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5786 , mSelectX)); 5787 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5788 , mSelectY)); 5789 if (DebugFlags.WEB_VIEW) { 5790 Log.v(LOGTAG, "moveSelection" 5791 + " mSelectX=" + mSelectX 5792 + " mSelectY=" + mSelectY 5793 + " mScrollX=" + mScrollX 5794 + " mScrollY=" + mScrollY 5795 + " xRate=" + xRate 5796 + " yRate=" + yRate 5797 ); 5798 } 5799 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5800 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5801 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5802 : 0; 5803 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5804 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5805 : 0; 5806 pinScrollBy(scrollX, scrollY, true, 0); 5807 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5808 requestRectangleOnScreen(select); 5809 invalidate(); 5810 } 5811 5812 private int scaleTrackballX(float xRate, int width) { 5813 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5814 int nextXMove = xMove; 5815 if (xMove > 0) { 5816 if (xMove > mTrackballXMove) { 5817 xMove -= mTrackballXMove; 5818 } 5819 } else if (xMove < mTrackballXMove) { 5820 xMove -= mTrackballXMove; 5821 } 5822 mTrackballXMove = nextXMove; 5823 return xMove; 5824 } 5825 5826 private int scaleTrackballY(float yRate, int height) { 5827 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5828 int nextYMove = yMove; 5829 if (yMove > 0) { 5830 if (yMove > mTrackballYMove) { 5831 yMove -= mTrackballYMove; 5832 } 5833 } else if (yMove < mTrackballYMove) { 5834 yMove -= mTrackballYMove; 5835 } 5836 mTrackballYMove = nextYMove; 5837 return yMove; 5838 } 5839 5840 private int keyCodeToSoundsEffect(int keyCode) { 5841 switch(keyCode) { 5842 case KeyEvent.KEYCODE_DPAD_UP: 5843 return SoundEffectConstants.NAVIGATION_UP; 5844 case KeyEvent.KEYCODE_DPAD_RIGHT: 5845 return SoundEffectConstants.NAVIGATION_RIGHT; 5846 case KeyEvent.KEYCODE_DPAD_DOWN: 5847 return SoundEffectConstants.NAVIGATION_DOWN; 5848 case KeyEvent.KEYCODE_DPAD_LEFT: 5849 return SoundEffectConstants.NAVIGATION_LEFT; 5850 } 5851 throw new IllegalArgumentException("keyCode must be one of " + 5852 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5853 "KEYCODE_DPAD_LEFT}."); 5854 } 5855 5856 private void doTrackball(long time) { 5857 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5858 if (elapsed == 0) { 5859 elapsed = TRACKBALL_TIMEOUT; 5860 } 5861 float xRate = mTrackballRemainsX * 1000 / elapsed; 5862 float yRate = mTrackballRemainsY * 1000 / elapsed; 5863 int viewWidth = getViewWidth(); 5864 int viewHeight = getViewHeight(); 5865 if (mSelectingText) { 5866 if (!mDrawSelectionPointer) { 5867 // The last selection was made by touch, disabling drawing the 5868 // selection pointer. Allow the trackball to adjust the 5869 // position of the touch control. 5870 mSelectX = contentToViewX(nativeSelectionX()); 5871 mSelectY = contentToViewY(nativeSelectionY()); 5872 mDrawSelectionPointer = mExtendSelection = true; 5873 nativeSetExtendSelection(); 5874 } 5875 moveSelection(scaleTrackballX(xRate, viewWidth), 5876 scaleTrackballY(yRate, viewHeight)); 5877 mTrackballRemainsX = mTrackballRemainsY = 0; 5878 return; 5879 } 5880 float ax = Math.abs(xRate); 5881 float ay = Math.abs(yRate); 5882 float maxA = Math.max(ax, ay); 5883 if (DebugFlags.WEB_VIEW) { 5884 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5885 + " xRate=" + xRate 5886 + " yRate=" + yRate 5887 + " mTrackballRemainsX=" + mTrackballRemainsX 5888 + " mTrackballRemainsY=" + mTrackballRemainsY); 5889 } 5890 int width = mContentWidth - viewWidth; 5891 int height = mContentHeight - viewHeight; 5892 if (width < 0) width = 0; 5893 if (height < 0) height = 0; 5894 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5895 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5896 maxA = Math.max(ax, ay); 5897 int count = Math.max(0, (int) maxA); 5898 int oldScrollX = mScrollX; 5899 int oldScrollY = mScrollY; 5900 if (count > 0) { 5901 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5902 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5903 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5904 KeyEvent.KEYCODE_DPAD_RIGHT; 5905 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5906 if (DebugFlags.WEB_VIEW) { 5907 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5908 + " count=" + count 5909 + " mTrackballRemainsX=" + mTrackballRemainsX 5910 + " mTrackballRemainsY=" + mTrackballRemainsY); 5911 } 5912 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 5913 for (int i = 0; i < count; i++) { 5914 letPageHandleNavKey(selectKeyCode, time, true); 5915 } 5916 letPageHandleNavKey(selectKeyCode, time, false); 5917 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5918 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5919 } 5920 mTrackballRemainsX = mTrackballRemainsY = 0; 5921 } 5922 if (count >= TRACKBALL_SCROLL_COUNT) { 5923 int xMove = scaleTrackballX(xRate, width); 5924 int yMove = scaleTrackballY(yRate, height); 5925 if (DebugFlags.WEB_VIEW) { 5926 Log.v(LOGTAG, "doTrackball pinScrollBy" 5927 + " count=" + count 5928 + " xMove=" + xMove + " yMove=" + yMove 5929 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5930 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5931 ); 5932 } 5933 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5934 xMove = 0; 5935 } 5936 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5937 yMove = 0; 5938 } 5939 if (xMove != 0 || yMove != 0) { 5940 pinScrollBy(xMove, yMove, true, 0); 5941 } 5942 mUserScroll = true; 5943 } 5944 } 5945 5946 private int computeMaxScrollX() { 5947 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5948 } 5949 5950 private int computeMaxScrollY() { 5951 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5952 - getViewHeightWithTitle(), 0); 5953 } 5954 5955 boolean updateScrollCoordinates(int x, int y) { 5956 int oldX = mScrollX; 5957 int oldY = mScrollY; 5958 mScrollX = x; 5959 mScrollY = y; 5960 if (oldX != mScrollX || oldY != mScrollY) { 5961 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 5962 return true; 5963 } else { 5964 return false; 5965 } 5966 } 5967 5968 public void flingScroll(int vx, int vy) { 5969 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5970 computeMaxScrollY()); 5971 invalidate(); 5972 } 5973 5974 private void doFling() { 5975 if (mVelocityTracker == null) { 5976 return; 5977 } 5978 int maxX = computeMaxScrollX(); 5979 int maxY = computeMaxScrollY(); 5980 5981 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5982 int vx = (int) mVelocityTracker.getXVelocity(); 5983 int vy = (int) mVelocityTracker.getYVelocity(); 5984 5985 if (mSnapScrollMode != SNAP_NONE) { 5986 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5987 vy = 0; 5988 } else { 5989 vx = 0; 5990 } 5991 } 5992 if (true /* EMG release: make our fling more like Maps' */) { 5993 // maps cuts their velocity in half 5994 vx = vx * 3 / 4; 5995 vy = vy * 3 / 4; 5996 } 5997 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5998 WebViewCore.resumePriority(); 5999 WebViewCore.resumeUpdatePicture(mWebViewCore); 6000 return; 6001 } 6002 float currentVelocity = mScroller.getCurrVelocity(); 6003 float velocity = (float) Math.hypot(vx, vy); 6004 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6005 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6006 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6007 - Math.atan2(vy, vx))); 6008 final float circle = (float) (Math.PI) * 2.0f; 6009 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6010 vx += currentVelocity * mLastVelX / mLastVelocity; 6011 vy += currentVelocity * mLastVelY / mLastVelocity; 6012 velocity = (float) Math.hypot(vx, vy); 6013 if (DebugFlags.WEB_VIEW) { 6014 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6015 } 6016 } else if (DebugFlags.WEB_VIEW) { 6017 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6018 } 6019 } else if (DebugFlags.WEB_VIEW) { 6020 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6021 + " current=" + currentVelocity 6022 + " vx=" + vx + " vy=" + vy 6023 + " maxX=" + maxX + " maxY=" + maxY 6024 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 6025 } 6026 mLastVelX = vx; 6027 mLastVelY = vy; 6028 mLastVelocity = velocity; 6029 6030 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 6031 final int time = mScroller.getDuration(); 6032 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 6033 awakenScrollBars(time); 6034 invalidate(); 6035 } 6036 6037 /** 6038 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6039 * in charge of installing this view to the view hierarchy. This view will 6040 * become visible when the user starts scrolling via touch and fade away if 6041 * the user does not interact with it. 6042 * <p/> 6043 * API version 3 introduces a built-in zoom mechanism that is shown 6044 * automatically by the MapView. This is the preferred approach for 6045 * showing the zoom UI. 6046 * 6047 * @deprecated The built-in zoom mechanism is preferred, see 6048 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6049 */ 6050 @Deprecated 6051 public View getZoomControls() { 6052 if (!getSettings().supportZoom()) { 6053 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6054 return null; 6055 } 6056 return mZoomManager.getExternalZoomPicker(); 6057 } 6058 6059 void dismissZoomControl() { 6060 mZoomManager.dismissZoomPicker(); 6061 } 6062 6063 float getDefaultZoomScale() { 6064 return mZoomManager.getDefaultScale(); 6065 } 6066 6067 /** 6068 * @return TRUE if the WebView can be zoomed in. 6069 */ 6070 public boolean canZoomIn() { 6071 return mZoomManager.canZoomIn(); 6072 } 6073 6074 /** 6075 * @return TRUE if the WebView can be zoomed out. 6076 */ 6077 public boolean canZoomOut() { 6078 return mZoomManager.canZoomOut(); 6079 } 6080 6081 /** 6082 * Perform zoom in in the webview 6083 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6084 */ 6085 public boolean zoomIn() { 6086 return mZoomManager.zoomIn(); 6087 } 6088 6089 /** 6090 * Perform zoom out in the webview 6091 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6092 */ 6093 public boolean zoomOut() { 6094 return mZoomManager.zoomOut(); 6095 } 6096 6097 private void updateSelection() { 6098 if (mNativeClass == 0) { 6099 return; 6100 } 6101 // mLastTouchX and mLastTouchY are the point in the current viewport 6102 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6103 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6104 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6105 contentX + mNavSlop, contentY + mNavSlop); 6106 nativeSelectBestAt(rect); 6107 } 6108 6109 /** 6110 * Scroll the focused text field/area to match the WebTextView 6111 * @param xPercent New x position of the WebTextView from 0 to 1. 6112 * @param y New y position of the WebTextView in view coordinates 6113 */ 6114 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 6115 if (!inEditingMode() || mWebViewCore == null) { 6116 return; 6117 } 6118 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 6119 // Since this position is relative to the top of the text input 6120 // field, we do not need to take the title bar's height into 6121 // consideration. 6122 viewToContentDimension(y), 6123 new Float(xPercent)); 6124 } 6125 6126 /** 6127 * Set our starting point and time for a drag from the WebTextView. 6128 */ 6129 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6130 if (!inEditingMode()) { 6131 return; 6132 } 6133 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 6134 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 6135 mLastTouchTime = eventTime; 6136 if (!mScroller.isFinished()) { 6137 abortAnimation(); 6138 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6139 } 6140 mSnapScrollMode = SNAP_NONE; 6141 mVelocityTracker = VelocityTracker.obtain(); 6142 mTouchMode = TOUCH_DRAG_START_MODE; 6143 } 6144 6145 /** 6146 * Given a motion event from the WebTextView, set its location to our 6147 * coordinates, and handle the event. 6148 */ 6149 /*package*/ boolean textFieldDrag(MotionEvent event) { 6150 if (!inEditingMode()) { 6151 return false; 6152 } 6153 mDragFromTextInput = true; 6154 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6155 (float) (mWebTextView.getTop() - mScrollY)); 6156 boolean result = onTouchEvent(event); 6157 mDragFromTextInput = false; 6158 return result; 6159 } 6160 6161 /** 6162 * Due a touch up from a WebTextView. This will be handled by webkit to 6163 * change the selection. 6164 * @param event MotionEvent in the WebTextView's coordinates. 6165 */ 6166 /*package*/ void touchUpOnTextField(MotionEvent event) { 6167 if (!inEditingMode()) { 6168 return; 6169 } 6170 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6171 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6172 nativeMotionUp(x, y, mNavSlop); 6173 } 6174 6175 /** 6176 * Called when pressing the center key or trackball on a textfield. 6177 */ 6178 /*package*/ void centerKeyPressOnTextField() { 6179 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6180 nativeCursorNodePointer()); 6181 } 6182 6183 private void doShortPress() { 6184 if (mNativeClass == 0) { 6185 return; 6186 } 6187 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6188 return; 6189 } 6190 mTouchMode = TOUCH_DONE_MODE; 6191 switchOutDrawHistory(); 6192 // mLastTouchX and mLastTouchY are the point in the current viewport 6193 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6194 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6195 if (getSettings().supportTouchOnly()) { 6196 removeTouchHighlight(false); 6197 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6198 // use "0" as generation id to inform WebKit to use the same x/y as 6199 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6200 touchUpData.mMoveGeneration = 0; 6201 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6202 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6203 WebViewCore.MotionUpData motionUpData = new WebViewCore 6204 .MotionUpData(); 6205 motionUpData.mFrame = nativeCacheHitFramePointer(); 6206 motionUpData.mNode = nativeCacheHitNodePointer(); 6207 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6208 motionUpData.mX = contentX; 6209 motionUpData.mY = contentY; 6210 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6211 motionUpData); 6212 } else { 6213 doMotionUp(contentX, contentY); 6214 } 6215 } 6216 6217 private void doMotionUp(int contentX, int contentY) { 6218 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 6219 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6220 } 6221 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6222 playSoundEffect(SoundEffectConstants.CLICK); 6223 } 6224 } 6225 6226 /* 6227 * Return true if the view (Plugin) is fully visible and maximized inside 6228 * the WebView. 6229 */ 6230 boolean isPluginFitOnScreen(ViewManager.ChildView view) { 6231 final int viewWidth = getViewWidth(); 6232 final int viewHeight = getViewHeightWithTitle(); 6233 float scale = Math.min((float) viewWidth / view.width, (float) viewHeight / view.height); 6234 scale = mZoomManager.computeScaleWithLimits(scale); 6235 return !mZoomManager.willScaleTriggerZoom(scale) 6236 && contentToViewX(view.x) >= mScrollX 6237 && contentToViewX(view.x + view.width) <= mScrollX + viewWidth 6238 && contentToViewY(view.y) >= mScrollY 6239 && contentToViewY(view.y + view.height) <= mScrollY + viewHeight; 6240 } 6241 6242 /* 6243 * Maximize and center the rectangle, specified in the document coordinate 6244 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6245 * animated scroll to center it. If the zoom needs to be changed, find the 6246 * zoom center and do a smooth zoom transition. 6247 */ 6248 void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 6249 int viewWidth = getViewWidth(); 6250 int viewHeight = getViewHeightWithTitle(); 6251 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 6252 / docHeight); 6253 scale = mZoomManager.computeScaleWithLimits(scale); 6254 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6255 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 6256 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 6257 true, 0); 6258 } else { 6259 float actualScale = mZoomManager.getScale(); 6260 float oldScreenX = docX * actualScale - mScrollX; 6261 float rectViewX = docX * scale; 6262 float rectViewWidth = docWidth * scale; 6263 float newMaxWidth = mContentWidth * scale; 6264 float newScreenX = (viewWidth - rectViewWidth) / 2; 6265 // pin the newX to the WebView 6266 if (newScreenX > rectViewX) { 6267 newScreenX = rectViewX; 6268 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6269 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6270 } 6271 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6272 / (scale - actualScale); 6273 float oldScreenY = docY * actualScale + getTitleHeight() 6274 - mScrollY; 6275 float rectViewY = docY * scale + getTitleHeight(); 6276 float rectViewHeight = docHeight * scale; 6277 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6278 float newScreenY = (viewHeight - rectViewHeight) / 2; 6279 // pin the newY to the WebView 6280 if (newScreenY > rectViewY) { 6281 newScreenY = rectViewY; 6282 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6283 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6284 } 6285 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6286 / (scale - actualScale); 6287 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6288 mZoomManager.startZoomAnimation(scale, false); 6289 } 6290 } 6291 6292 // Called by JNI to handle a touch on a node representing an email address, 6293 // address, or phone number 6294 private void overrideLoading(String url) { 6295 mCallbackProxy.uiOverrideUrlLoading(url); 6296 } 6297 6298 @Override 6299 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6300 // FIXME: If a subwindow is showing find, and the user touches the 6301 // background window, it can steal focus. 6302 if (mFindIsUp) return false; 6303 boolean result = false; 6304 if (inEditingMode()) { 6305 result = mWebTextView.requestFocus(direction, 6306 previouslyFocusedRect); 6307 } else { 6308 result = super.requestFocus(direction, previouslyFocusedRect); 6309 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6310 // For cases such as GMail, where we gain focus from a direction, 6311 // we want to move to the first available link. 6312 // FIXME: If there are no visible links, we may not want to 6313 int fakeKeyDirection = 0; 6314 switch(direction) { 6315 case View.FOCUS_UP: 6316 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6317 break; 6318 case View.FOCUS_DOWN: 6319 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6320 break; 6321 case View.FOCUS_LEFT: 6322 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6323 break; 6324 case View.FOCUS_RIGHT: 6325 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6326 break; 6327 default: 6328 return result; 6329 } 6330 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6331 navHandledKey(fakeKeyDirection, 1, true, 0); 6332 } 6333 } 6334 } 6335 return result; 6336 } 6337 6338 @Override 6339 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6340 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6341 6342 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6343 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6344 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6345 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6346 6347 int measuredHeight = heightSize; 6348 int measuredWidth = widthSize; 6349 6350 // Grab the content size from WebViewCore. 6351 int contentHeight = contentToViewDimension(mContentHeight); 6352 int contentWidth = contentToViewDimension(mContentWidth); 6353 6354// Log.d(LOGTAG, "------- measure " + heightMode); 6355 6356 if (heightMode != MeasureSpec.EXACTLY) { 6357 mHeightCanMeasure = true; 6358 measuredHeight = contentHeight; 6359 if (heightMode == MeasureSpec.AT_MOST) { 6360 // If we are larger than the AT_MOST height, then our height can 6361 // no longer be measured and we should scroll internally. 6362 if (measuredHeight > heightSize) { 6363 measuredHeight = heightSize; 6364 mHeightCanMeasure = false; 6365 } 6366 } 6367 } else { 6368 mHeightCanMeasure = false; 6369 } 6370 if (mNativeClass != 0) { 6371 nativeSetHeightCanMeasure(mHeightCanMeasure); 6372 } 6373 // For the width, always use the given size unless unspecified. 6374 if (widthMode == MeasureSpec.UNSPECIFIED) { 6375 mWidthCanMeasure = true; 6376 measuredWidth = contentWidth; 6377 } else { 6378 mWidthCanMeasure = false; 6379 } 6380 6381 synchronized (this) { 6382 setMeasuredDimension(measuredWidth, measuredHeight); 6383 } 6384 } 6385 6386 @Override 6387 public boolean requestChildRectangleOnScreen(View child, 6388 Rect rect, 6389 boolean immediate) { 6390 // don't scroll while in zoom animation. When it is done, we will adjust 6391 // the necessary components (e.g., WebTextView if it is in editing mode) 6392 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6393 return false; 6394 } 6395 6396 rect.offset(child.getLeft() - child.getScrollX(), 6397 child.getTop() - child.getScrollY()); 6398 6399 Rect content = new Rect(viewToContentX(mScrollX), 6400 viewToContentY(mScrollY), 6401 viewToContentX(mScrollX + getWidth() 6402 - getVerticalScrollbarWidth()), 6403 viewToContentY(mScrollY + getViewHeightWithTitle())); 6404 content = nativeSubtractLayers(content); 6405 int screenTop = contentToViewY(content.top); 6406 int screenBottom = contentToViewY(content.bottom); 6407 int height = screenBottom - screenTop; 6408 int scrollYDelta = 0; 6409 6410 if (rect.bottom > screenBottom) { 6411 int oneThirdOfScreenHeight = height / 3; 6412 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6413 // If the rectangle is too tall to fit in the bottom two thirds 6414 // of the screen, place it at the top. 6415 scrollYDelta = rect.top - screenTop; 6416 } else { 6417 // If the rectangle will still fit on screen, we want its 6418 // top to be in the top third of the screen. 6419 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6420 } 6421 } else if (rect.top < screenTop) { 6422 scrollYDelta = rect.top - screenTop; 6423 } 6424 6425 int screenLeft = contentToViewX(content.left); 6426 int screenRight = contentToViewX(content.right); 6427 int width = screenRight - screenLeft; 6428 int scrollXDelta = 0; 6429 6430 if (rect.right > screenRight && rect.left > screenLeft) { 6431 if (rect.width() > width) { 6432 scrollXDelta += (rect.left - screenLeft); 6433 } else { 6434 scrollXDelta += (rect.right - screenRight); 6435 } 6436 } else if (rect.left < screenLeft) { 6437 scrollXDelta -= (screenLeft - rect.left); 6438 } 6439 6440 if ((scrollYDelta | scrollXDelta) != 0) { 6441 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6442 } 6443 6444 return false; 6445 } 6446 6447 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6448 String replace, int newStart, int newEnd) { 6449 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6450 arg.mReplace = replace; 6451 arg.mNewStart = newStart; 6452 arg.mNewEnd = newEnd; 6453 mTextGeneration++; 6454 arg.mTextGeneration = mTextGeneration; 6455 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6456 } 6457 6458 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6459 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6460 arg.mEvent = event; 6461 arg.mCurrentText = currentText; 6462 // Increase our text generation number, and pass it to webcore thread 6463 mTextGeneration++; 6464 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6465 // WebKit's document state is not saved until about to leave the page. 6466 // To make sure the host application, like Browser, has the up to date 6467 // document state when it goes to background, we force to save the 6468 // document state. 6469 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6470 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6471 cursorData(), 1000); 6472 } 6473 6474 /* package */ synchronized WebViewCore getWebViewCore() { 6475 return mWebViewCore; 6476 } 6477 6478 //------------------------------------------------------------------------- 6479 // Methods can be called from a separate thread, like WebViewCore 6480 // If it needs to call the View system, it has to send message. 6481 //------------------------------------------------------------------------- 6482 6483 /** 6484 * General handler to receive message coming from webkit thread 6485 */ 6486 class PrivateHandler extends Handler { 6487 @Override 6488 public void handleMessage(Message msg) { 6489 // exclude INVAL_RECT_MSG_ID since it is frequently output 6490 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6491 if (msg.what >= FIRST_PRIVATE_MSG_ID 6492 && msg.what <= LAST_PRIVATE_MSG_ID) { 6493 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6494 - FIRST_PRIVATE_MSG_ID]); 6495 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6496 && msg.what <= LAST_PACKAGE_MSG_ID) { 6497 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6498 - FIRST_PACKAGE_MSG_ID]); 6499 } else { 6500 Log.v(LOGTAG, Integer.toString(msg.what)); 6501 } 6502 } 6503 if (mWebViewCore == null) { 6504 // after WebView's destroy() is called, skip handling messages. 6505 return; 6506 } 6507 switch (msg.what) { 6508 case REMEMBER_PASSWORD: { 6509 mDatabase.setUsernamePassword( 6510 msg.getData().getString("host"), 6511 msg.getData().getString("username"), 6512 msg.getData().getString("password")); 6513 ((Message) msg.obj).sendToTarget(); 6514 break; 6515 } 6516 case NEVER_REMEMBER_PASSWORD: { 6517 mDatabase.setUsernamePassword( 6518 msg.getData().getString("host"), null, null); 6519 ((Message) msg.obj).sendToTarget(); 6520 break; 6521 } 6522 case PREVENT_DEFAULT_TIMEOUT: { 6523 // if timeout happens, cancel it so that it won't block UI 6524 // to continue handling touch events 6525 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6526 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6527 || (msg.arg1 == MotionEvent.ACTION_MOVE 6528 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6529 cancelWebCoreTouchEvent( 6530 viewToContentX((int) mLastTouchX + mScrollX), 6531 viewToContentY((int) mLastTouchY + mScrollY), 6532 true); 6533 } 6534 break; 6535 } 6536 case SWITCH_TO_SHORTPRESS: { 6537 if (mTouchMode == TOUCH_INIT_MODE) { 6538 if (!getSettings().supportTouchOnly() 6539 && mPreventDefault != PREVENT_DEFAULT_YES) { 6540 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6541 updateSelection(); 6542 } else { 6543 // set to TOUCH_SHORTPRESS_MODE so that it won't 6544 // trigger double tap any more 6545 mTouchMode = TOUCH_SHORTPRESS_MODE; 6546 } 6547 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6548 mTouchMode = TOUCH_DONE_MODE; 6549 } 6550 break; 6551 } 6552 case SWITCH_TO_LONGPRESS: { 6553 if (getSettings().supportTouchOnly()) { 6554 removeTouchHighlight(false); 6555 } 6556 if (inFullScreenMode() || mDeferTouchProcess) { 6557 TouchEventData ted = new TouchEventData(); 6558 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6559 ted.mPoints = new Point[1]; 6560 ted.mPoints[0] = new Point(viewToContentX((int) mLastTouchX + mScrollX), 6561 viewToContentY((int) mLastTouchY + mScrollY)); 6562 // metaState for long press is tricky. Should it be the 6563 // state when the press started or when the press was 6564 // released? Or some intermediary key state? For 6565 // simplicity for now, we don't set it. 6566 ted.mMetaState = 0; 6567 ted.mReprocess = mDeferTouchProcess; 6568 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6569 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6570 mTouchMode = TOUCH_DONE_MODE; 6571 performLongClick(); 6572 } 6573 break; 6574 } 6575 case RELEASE_SINGLE_TAP: { 6576 doShortPress(); 6577 break; 6578 } 6579 case SCROLL_BY_MSG_ID: 6580 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6581 break; 6582 case SYNC_SCROLL_TO_MSG_ID: 6583 if (mUserScroll) { 6584 // if user has scrolled explicitly, don't sync the 6585 // scroll position any more 6586 mUserScroll = false; 6587 break; 6588 } 6589 // fall through 6590 case SCROLL_TO_MSG_ID: 6591 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6592 // if we can't scroll to the exact position due to pin, 6593 // send a message to WebCore to re-scroll when we get a 6594 // new picture 6595 mUserScroll = false; 6596 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6597 msg.arg1, msg.arg2); 6598 } 6599 break; 6600 case SPAWN_SCROLL_TO_MSG_ID: 6601 spawnContentScrollTo(msg.arg1, msg.arg2); 6602 break; 6603 case UPDATE_ZOOM_RANGE: { 6604 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 6605 // mScrollX contains the new minPrefWidth 6606 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 6607 break; 6608 } 6609 case REPLACE_BASE_CONTENT: { 6610 nativeReplaceBaseContent(msg.arg1); 6611 break; 6612 } 6613 case NEW_PICTURE_MSG_ID: { 6614 // called for new content 6615 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 6616 nativeSetBaseLayer(draw.mBaseLayer); 6617 final Point viewSize = draw.mViewPoint; 6618 WebViewCore.ViewState viewState = draw.mViewState; 6619 boolean isPictureAfterFirstLayout = viewState != null; 6620 if (isPictureAfterFirstLayout) { 6621 // Reset the last sent data here since dealing with new page. 6622 mLastWidthSent = 0; 6623 mZoomManager.onFirstLayout(draw); 6624 if (!mDrawHistory) { 6625 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 6626 // As we are on a new page, remove the WebTextView. This 6627 // is necessary for page loads driven by webkit, and in 6628 // particular when the user was on a password field, so 6629 // the WebTextView was visible. 6630 clearTextEntry(); 6631 } 6632 } 6633 6634 // We update the layout (i.e. request a layout from the 6635 // view system) if the last view size that we sent to 6636 // WebCore matches the view size of the picture we just 6637 // received in the fixed dimension. 6638 final boolean updateLayout = viewSize.x == mLastWidthSent 6639 && viewSize.y == mLastHeightSent; 6640 recordNewContentSize(draw.mWidthHeight.x, 6641 draw.mWidthHeight.y, updateLayout); 6642 if (DebugFlags.WEB_VIEW) { 6643 Rect b = draw.mInvalRegion.getBounds(); 6644 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6645 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6646 } 6647 invalidateContentRect(draw.mInvalRegion.getBounds()); 6648 6649 if (mPictureListener != null) { 6650 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6651 } 6652 6653 // update the zoom information based on the new picture 6654 mZoomManager.onNewPicture(draw); 6655 6656 if (draw.mFocusSizeChanged && inEditingMode()) { 6657 mFocusSizeChanged = true; 6658 } 6659 if (isPictureAfterFirstLayout) { 6660 mViewManager.postReadyToDrawAll(); 6661 } 6662 break; 6663 } 6664 case WEBCORE_INITIALIZED_MSG_ID: 6665 // nativeCreate sets mNativeClass to a non-zero value 6666 nativeCreate(msg.arg1); 6667 break; 6668 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6669 // Make sure that the textfield is currently focused 6670 // and representing the same node as the pointer. 6671 if (inEditingMode() && 6672 mWebTextView.isSameTextField(msg.arg1)) { 6673 if (msg.getData().getBoolean("password")) { 6674 Spannable text = (Spannable) mWebTextView.getText(); 6675 int start = Selection.getSelectionStart(text); 6676 int end = Selection.getSelectionEnd(text); 6677 mWebTextView.setInPassword(true); 6678 // Restore the selection, which may have been 6679 // ruined by setInPassword. 6680 Spannable pword = 6681 (Spannable) mWebTextView.getText(); 6682 Selection.setSelection(pword, start, end); 6683 // If the text entry has created more events, ignore 6684 // this one. 6685 } else if (msg.arg2 == mTextGeneration) { 6686 mWebTextView.setTextAndKeepSelection( 6687 (String) msg.obj); 6688 } 6689 } 6690 break; 6691 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6692 displaySoftKeyboard(true); 6693 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 6694 case UPDATE_TEXT_SELECTION_MSG_ID: 6695 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6696 (WebViewCore.TextSelectionData) msg.obj); 6697 break; 6698 case FORM_DID_BLUR: 6699 if (inEditingMode() 6700 && mWebTextView.isSameTextField(msg.arg1)) { 6701 hideSoftKeyboard(); 6702 } 6703 break; 6704 case RETURN_LABEL: 6705 if (inEditingMode() 6706 && mWebTextView.isSameTextField(msg.arg1)) { 6707 mWebTextView.setHint((String) msg.obj); 6708 InputMethodManager imm 6709 = InputMethodManager.peekInstance(); 6710 // The hint is propagated to the IME in 6711 // onCreateInputConnection. If the IME is already 6712 // active, restart it so that its hint text is updated. 6713 if (imm != null && imm.isActive(mWebTextView)) { 6714 imm.restartInput(mWebTextView); 6715 } 6716 } 6717 break; 6718 case UNHANDLED_NAV_KEY: 6719 navHandledKey(msg.arg1, 1, false, 0); 6720 break; 6721 case UPDATE_TEXT_ENTRY_MSG_ID: 6722 // this is sent after finishing resize in WebViewCore. Make 6723 // sure the text edit box is still on the screen. 6724 if (inEditingMode() && nativeCursorIsTextInput()) { 6725 mWebTextView.bringIntoView(); 6726 rebuildWebTextView(); 6727 } 6728 break; 6729 case CLEAR_TEXT_ENTRY: 6730 clearTextEntry(); 6731 break; 6732 case INVAL_RECT_MSG_ID: { 6733 Rect r = (Rect)msg.obj; 6734 if (r == null) { 6735 invalidate(); 6736 } else { 6737 // we need to scale r from content into view coords, 6738 // which viewInvalidate() does for us 6739 viewInvalidate(r.left, r.top, r.right, r.bottom); 6740 } 6741 break; 6742 } 6743 case REQUEST_FORM_DATA: 6744 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6745 if (mWebTextView.isSameTextField(msg.arg1)) { 6746 mWebTextView.setAdapterCustom(adapter); 6747 } 6748 break; 6749 case RESUME_WEBCORE_PRIORITY: 6750 WebViewCore.resumePriority(); 6751 WebViewCore.resumeUpdatePicture(mWebViewCore); 6752 break; 6753 6754 case LONG_PRESS_CENTER: 6755 // as this is shared by keydown and trackballdown, reset all 6756 // the states 6757 mGotCenterDown = false; 6758 mTrackballDown = false; 6759 performLongClick(); 6760 break; 6761 6762 case WEBCORE_NEED_TOUCH_EVENTS: 6763 mForwardTouchEvents = (msg.arg1 != 0); 6764 break; 6765 6766 case PREVENT_TOUCH_ID: 6767 if (inFullScreenMode()) { 6768 break; 6769 } 6770 if (msg.obj == null) { 6771 if (msg.arg1 == MotionEvent.ACTION_DOWN 6772 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6773 // if prevent default is called from WebCore, UI 6774 // will not handle the rest of the touch events any 6775 // more. 6776 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6777 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6778 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6779 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6780 // the return for the first ACTION_MOVE will decide 6781 // whether UI will handle touch or not. Currently no 6782 // support for alternating prevent default 6783 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6784 : PREVENT_DEFAULT_NO; 6785 } 6786 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6787 mTouchHighlightRegion.setEmpty(); 6788 } 6789 } else if (msg.arg2 == 0) { 6790 // prevent default is not called in WebCore, so the 6791 // message needs to be reprocessed in UI 6792 TouchEventData ted = (TouchEventData) msg.obj; 6793 switch (ted.mAction) { 6794 case MotionEvent.ACTION_DOWN: 6795 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 6796 - mScrollX; 6797 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 6798 - mScrollY; 6799 mDeferTouchMode = TOUCH_INIT_MODE; 6800 break; 6801 case MotionEvent.ACTION_MOVE: { 6802 // no snapping in defer process 6803 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 6804 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 6805 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6806 mDeferTouchMode = TOUCH_DRAG_MODE; 6807 mLastDeferTouchX = x; 6808 mLastDeferTouchY = y; 6809 startDrag(); 6810 } 6811 int deltaX = pinLocX((int) (mScrollX 6812 + mLastDeferTouchX - x)) 6813 - mScrollX; 6814 int deltaY = pinLocY((int) (mScrollY 6815 + mLastDeferTouchY - y)) 6816 - mScrollY; 6817 doDrag(deltaX, deltaY); 6818 if (deltaX != 0) mLastDeferTouchX = x; 6819 if (deltaY != 0) mLastDeferTouchY = y; 6820 break; 6821 } 6822 case MotionEvent.ACTION_UP: 6823 case MotionEvent.ACTION_CANCEL: 6824 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6825 // no fling in defer process 6826 WebViewCore.resumePriority(); 6827 WebViewCore.resumeUpdatePicture(mWebViewCore); 6828 } 6829 mDeferTouchMode = TOUCH_DONE_MODE; 6830 break; 6831 case WebViewCore.ACTION_DOUBLETAP: 6832 // doDoubleTap() needs mLastTouchX/Y as anchor 6833 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 6834 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 6835 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6836 mDeferTouchMode = TOUCH_DONE_MODE; 6837 break; 6838 case WebViewCore.ACTION_LONGPRESS: 6839 HitTestResult hitTest = getHitTestResult(); 6840 if (hitTest != null && hitTest.mType 6841 != HitTestResult.UNKNOWN_TYPE) { 6842 performLongClick(); 6843 } 6844 mDeferTouchMode = TOUCH_DONE_MODE; 6845 break; 6846 } 6847 } 6848 break; 6849 6850 case REQUEST_KEYBOARD: 6851 if (msg.arg1 == 0) { 6852 hideSoftKeyboard(); 6853 } else { 6854 displaySoftKeyboard(false); 6855 } 6856 break; 6857 6858 case FIND_AGAIN: 6859 // Ignore if find has been dismissed. 6860 if (mFindIsUp && mFindCallback != null) { 6861 mFindCallback.findAll(); 6862 } 6863 break; 6864 6865 case DRAG_HELD_MOTIONLESS: 6866 mHeldMotionless = MOTIONLESS_TRUE; 6867 invalidate(); 6868 // fall through to keep scrollbars awake 6869 6870 case AWAKEN_SCROLL_BARS: 6871 if (mTouchMode == TOUCH_DRAG_MODE 6872 && mHeldMotionless == MOTIONLESS_TRUE) { 6873 awakenScrollBars(ViewConfiguration 6874 .getScrollDefaultDelay(), false); 6875 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6876 .obtainMessage(AWAKEN_SCROLL_BARS), 6877 ViewConfiguration.getScrollDefaultDelay()); 6878 } 6879 break; 6880 6881 case DO_MOTION_UP: 6882 doMotionUp(msg.arg1, msg.arg2); 6883 break; 6884 6885 case SHOW_FULLSCREEN: { 6886 View view = (View) msg.obj; 6887 int npp = msg.arg1; 6888 6889 if (inFullScreenMode()) { 6890 Log.w(LOGTAG, "Should not have another full screen."); 6891 dismissFullScreenMode(); 6892 } 6893 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 6894 mFullScreenHolder.setContentView(view); 6895 mFullScreenHolder.setCancelable(false); 6896 mFullScreenHolder.setCanceledOnTouchOutside(false); 6897 mFullScreenHolder.show(); 6898 6899 break; 6900 } 6901 case HIDE_FULLSCREEN: 6902 dismissFullScreenMode(); 6903 break; 6904 6905 case DOM_FOCUS_CHANGED: 6906 if (inEditingMode()) { 6907 nativeClearCursor(); 6908 rebuildWebTextView(); 6909 } 6910 break; 6911 6912 case SHOW_RECT_MSG_ID: { 6913 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6914 int x = mScrollX; 6915 int left = contentToViewX(data.mLeft); 6916 int width = contentToViewDimension(data.mWidth); 6917 int maxWidth = contentToViewDimension(data.mContentWidth); 6918 int viewWidth = getViewWidth(); 6919 if (width < viewWidth) { 6920 // center align 6921 x += left + width / 2 - mScrollX - viewWidth / 2; 6922 } else { 6923 x += (int) (left + data.mXPercentInDoc * width 6924 - mScrollX - data.mXPercentInView * viewWidth); 6925 } 6926 if (DebugFlags.WEB_VIEW) { 6927 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6928 width + ",maxWidth=" + maxWidth + 6929 ",viewWidth=" + viewWidth + ",x=" 6930 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6931 ",xPercentInView=" + data.mXPercentInView+ ")"); 6932 } 6933 // use the passing content width to cap x as the current 6934 // mContentWidth may not be updated yet 6935 x = Math.max(0, 6936 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6937 int top = contentToViewY(data.mTop); 6938 int height = contentToViewDimension(data.mHeight); 6939 int maxHeight = contentToViewDimension(data.mContentHeight); 6940 int viewHeight = getViewHeight(); 6941 int y = (int) (top + data.mYPercentInDoc * height - 6942 data.mYPercentInView * viewHeight); 6943 if (DebugFlags.WEB_VIEW) { 6944 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6945 height + ",maxHeight=" + maxHeight + 6946 ",viewHeight=" + viewHeight + ",y=" 6947 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6948 ",yPercentInView=" + data.mYPercentInView+ ")"); 6949 } 6950 // use the passing content height to cap y as the current 6951 // mContentHeight may not be updated yet 6952 y = Math.max(0, 6953 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6954 // We need to take into account the visible title height 6955 // when scrolling since y is an absolute view position. 6956 y = Math.max(0, y - getVisibleTitleHeight()); 6957 scrollTo(x, y); 6958 } 6959 break; 6960 6961 case CENTER_FIT_RECT: 6962 Rect r = (Rect)msg.obj; 6963 centerFitRect(r.left, r.top, r.width(), r.height()); 6964 break; 6965 6966 case SET_SCROLLBAR_MODES: 6967 mHorizontalScrollBarMode = msg.arg1; 6968 mVerticalScrollBarMode = msg.arg2; 6969 break; 6970 6971 case SELECTION_STRING_CHANGED: 6972 if (mAccessibilityInjector != null) { 6973 String selectionString = (String) msg.obj; 6974 mAccessibilityInjector.onSelectionStringChange(selectionString); 6975 } 6976 break; 6977 6978 case SET_TOUCH_HIGHLIGHT_RECTS: 6979 invalidate(mTouchHighlightRegion.getBounds()); 6980 mTouchHighlightRegion.setEmpty(); 6981 if (msg.obj != null) { 6982 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 6983 for (Rect rect : rects) { 6984 Rect viewRect = contentToViewRect(rect); 6985 // some sites, like stories in nytimes.com, set 6986 // mouse event handler in the top div. It is not 6987 // user friendly to highlight the div if it covers 6988 // more than half of the screen. 6989 if (viewRect.width() < getWidth() >> 1 6990 || viewRect.height() < getHeight() >> 1) { 6991 mTouchHighlightRegion.union(viewRect); 6992 invalidate(viewRect); 6993 } else { 6994 Log.w(LOGTAG, "Skip the huge selection rect:" 6995 + viewRect); 6996 } 6997 } 6998 } 6999 break; 7000 7001 case SAVE_WEBARCHIVE_FINISHED: 7002 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7003 if (saveMessage.mCallback != null) { 7004 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7005 } 7006 break; 7007 7008 case SET_AUTOFILLABLE: 7009 mAutoFillQueryId = msg.arg1; 7010 if (mWebTextView != null) { 7011 mWebTextView.setAutoFillable(mAutoFillQueryId); 7012 rebuildWebTextView(); 7013 } 7014 break; 7015 7016 default: 7017 super.handleMessage(msg); 7018 break; 7019 } 7020 } 7021 } 7022 7023 /** 7024 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7025 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7026 */ 7027 private void updateTextSelectionFromMessage(int nodePointer, 7028 int textGeneration, WebViewCore.TextSelectionData data) { 7029 if (inEditingMode() 7030 && mWebTextView.isSameTextField(nodePointer) 7031 && textGeneration == mTextGeneration) { 7032 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7033 } 7034 } 7035 7036 // Class used to use a dropdown for a <select> element 7037 private class InvokeListBox implements Runnable { 7038 // Whether the listbox allows multiple selection. 7039 private boolean mMultiple; 7040 // Passed in to a list with multiple selection to tell 7041 // which items are selected. 7042 private int[] mSelectedArray; 7043 // Passed in to a list with single selection to tell 7044 // where the initial selection is. 7045 private int mSelection; 7046 7047 private Container[] mContainers; 7048 7049 // Need these to provide stable ids to my ArrayAdapter, 7050 // which normally does not have stable ids. (Bug 1250098) 7051 private class Container extends Object { 7052 /** 7053 * Possible values for mEnabled. Keep in sync with OptionStatus in 7054 * WebViewCore.cpp 7055 */ 7056 final static int OPTGROUP = -1; 7057 final static int OPTION_DISABLED = 0; 7058 final static int OPTION_ENABLED = 1; 7059 7060 String mString; 7061 int mEnabled; 7062 int mId; 7063 7064 public String toString() { 7065 return mString; 7066 } 7067 } 7068 7069 /** 7070 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7071 * and allow filtering. 7072 */ 7073 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7074 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7075 super(context, 7076 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7077 com.android.internal.R.layout.select_dialog_singlechoice, 7078 objects); 7079 } 7080 7081 @Override 7082 public View getView(int position, View convertView, 7083 ViewGroup parent) { 7084 // Always pass in null so that we will get a new CheckedTextView 7085 // Otherwise, an item which was previously used as an <optgroup> 7086 // element (i.e. has no check), could get used as an <option> 7087 // element, which needs a checkbox/radio, but it would not have 7088 // one. 7089 convertView = super.getView(position, null, parent); 7090 Container c = item(position); 7091 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7092 // ListView does not draw dividers between disabled and 7093 // enabled elements. Use a LinearLayout to provide dividers 7094 LinearLayout layout = new LinearLayout(mContext); 7095 layout.setOrientation(LinearLayout.VERTICAL); 7096 if (position > 0) { 7097 View dividerTop = new View(mContext); 7098 dividerTop.setBackgroundResource( 7099 android.R.drawable.divider_horizontal_bright); 7100 layout.addView(dividerTop); 7101 } 7102 7103 if (Container.OPTGROUP == c.mEnabled) { 7104 // Currently select_dialog_multichoice and 7105 // select_dialog_singlechoice are CheckedTextViews. If 7106 // that changes, the class cast will no longer be valid. 7107 Assert.assertTrue( 7108 convertView instanceof CheckedTextView); 7109 ((CheckedTextView) convertView).setCheckMarkDrawable( 7110 null); 7111 } else { 7112 // c.mEnabled == Container.OPTION_DISABLED 7113 // Draw the disabled element in a disabled state. 7114 convertView.setEnabled(false); 7115 } 7116 7117 layout.addView(convertView); 7118 if (position < getCount() - 1) { 7119 View dividerBottom = new View(mContext); 7120 dividerBottom.setBackgroundResource( 7121 android.R.drawable.divider_horizontal_bright); 7122 layout.addView(dividerBottom); 7123 } 7124 return layout; 7125 } 7126 return convertView; 7127 } 7128 7129 @Override 7130 public boolean hasStableIds() { 7131 // AdapterView's onChanged method uses this to determine whether 7132 // to restore the old state. Return false so that the old (out 7133 // of date) state does not replace the new, valid state. 7134 return false; 7135 } 7136 7137 private Container item(int position) { 7138 if (position < 0 || position >= getCount()) { 7139 return null; 7140 } 7141 return (Container) getItem(position); 7142 } 7143 7144 @Override 7145 public long getItemId(int position) { 7146 Container item = item(position); 7147 if (item == null) { 7148 return -1; 7149 } 7150 return item.mId; 7151 } 7152 7153 @Override 7154 public boolean areAllItemsEnabled() { 7155 return false; 7156 } 7157 7158 @Override 7159 public boolean isEnabled(int position) { 7160 Container item = item(position); 7161 if (item == null) { 7162 return false; 7163 } 7164 return Container.OPTION_ENABLED == item.mEnabled; 7165 } 7166 } 7167 7168 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7169 mMultiple = true; 7170 mSelectedArray = selected; 7171 7172 int length = array.length; 7173 mContainers = new Container[length]; 7174 for (int i = 0; i < length; i++) { 7175 mContainers[i] = new Container(); 7176 mContainers[i].mString = array[i]; 7177 mContainers[i].mEnabled = enabled[i]; 7178 mContainers[i].mId = i; 7179 } 7180 } 7181 7182 private InvokeListBox(String[] array, int[] enabled, int selection) { 7183 mSelection = selection; 7184 mMultiple = false; 7185 7186 int length = array.length; 7187 mContainers = new Container[length]; 7188 for (int i = 0; i < length; i++) { 7189 mContainers[i] = new Container(); 7190 mContainers[i].mString = array[i]; 7191 mContainers[i].mEnabled = enabled[i]; 7192 mContainers[i].mId = i; 7193 } 7194 } 7195 7196 /* 7197 * Whenever the data set changes due to filtering, this class ensures 7198 * that the checked item remains checked. 7199 */ 7200 private class SingleDataSetObserver extends DataSetObserver { 7201 private long mCheckedId; 7202 private ListView mListView; 7203 private Adapter mAdapter; 7204 7205 /* 7206 * Create a new observer. 7207 * @param id The ID of the item to keep checked. 7208 * @param l ListView for getting and clearing the checked states 7209 * @param a Adapter for getting the IDs 7210 */ 7211 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7212 mCheckedId = id; 7213 mListView = l; 7214 mAdapter = a; 7215 } 7216 7217 public void onChanged() { 7218 // The filter may have changed which item is checked. Find the 7219 // item that the ListView thinks is checked. 7220 int position = mListView.getCheckedItemPosition(); 7221 long id = mAdapter.getItemId(position); 7222 if (mCheckedId != id) { 7223 // Clear the ListView's idea of the checked item, since 7224 // it is incorrect 7225 mListView.clearChoices(); 7226 // Search for mCheckedId. If it is in the filtered list, 7227 // mark it as checked 7228 int count = mAdapter.getCount(); 7229 for (int i = 0; i < count; i++) { 7230 if (mAdapter.getItemId(i) == mCheckedId) { 7231 mListView.setItemChecked(i, true); 7232 break; 7233 } 7234 } 7235 } 7236 } 7237 7238 public void onInvalidate() {} 7239 } 7240 7241 public void run() { 7242 final ListView listView = (ListView) LayoutInflater.from(mContext) 7243 .inflate(com.android.internal.R.layout.select_dialog, null); 7244 final MyArrayListAdapter adapter = new 7245 MyArrayListAdapter(mContext, mContainers, mMultiple); 7246 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7247 .setView(listView).setCancelable(true) 7248 .setInverseBackgroundForced(true); 7249 7250 if (mMultiple) { 7251 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7252 public void onClick(DialogInterface dialog, int which) { 7253 mWebViewCore.sendMessage( 7254 EventHub.LISTBOX_CHOICES, 7255 adapter.getCount(), 0, 7256 listView.getCheckedItemPositions()); 7257 }}); 7258 b.setNegativeButton(android.R.string.cancel, 7259 new DialogInterface.OnClickListener() { 7260 public void onClick(DialogInterface dialog, int which) { 7261 mWebViewCore.sendMessage( 7262 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7263 }}); 7264 } 7265 final AlertDialog dialog = b.create(); 7266 listView.setAdapter(adapter); 7267 listView.setFocusableInTouchMode(true); 7268 // There is a bug (1250103) where the checks in a ListView with 7269 // multiple items selected are associated with the positions, not 7270 // the ids, so the items do not properly retain their checks when 7271 // filtered. Do not allow filtering on multiple lists until 7272 // that bug is fixed. 7273 7274 listView.setTextFilterEnabled(!mMultiple); 7275 if (mMultiple) { 7276 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7277 int length = mSelectedArray.length; 7278 for (int i = 0; i < length; i++) { 7279 listView.setItemChecked(mSelectedArray[i], true); 7280 } 7281 } else { 7282 listView.setOnItemClickListener(new OnItemClickListener() { 7283 public void onItemClick(AdapterView parent, View v, 7284 int position, long id) { 7285 mWebViewCore.sendMessage( 7286 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 7287 dialog.dismiss(); 7288 } 7289 }); 7290 if (mSelection != -1) { 7291 listView.setSelection(mSelection); 7292 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7293 listView.setItemChecked(mSelection, true); 7294 DataSetObserver observer = new SingleDataSetObserver( 7295 adapter.getItemId(mSelection), listView, adapter); 7296 adapter.registerDataSetObserver(observer); 7297 } 7298 } 7299 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7300 public void onCancel(DialogInterface dialog) { 7301 mWebViewCore.sendMessage( 7302 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7303 } 7304 }); 7305 dialog.show(); 7306 } 7307 } 7308 7309 /* 7310 * Request a dropdown menu for a listbox with multiple selection. 7311 * 7312 * @param array Labels for the listbox. 7313 * @param enabledArray State for each element in the list. See static 7314 * integers in Container class. 7315 * @param selectedArray Which positions are initally selected. 7316 */ 7317 void requestListBox(String[] array, int[] enabledArray, int[] 7318 selectedArray) { 7319 mPrivateHandler.post( 7320 new InvokeListBox(array, enabledArray, selectedArray)); 7321 } 7322 7323 /* 7324 * Request a dropdown menu for a listbox with single selection or a single 7325 * <select> element. 7326 * 7327 * @param array Labels for the listbox. 7328 * @param enabledArray State for each element in the list. See static 7329 * integers in Container class. 7330 * @param selection Which position is initally selected. 7331 */ 7332 void requestListBox(String[] array, int[] enabledArray, int selection) { 7333 mPrivateHandler.post( 7334 new InvokeListBox(array, enabledArray, selection)); 7335 } 7336 7337 // called by JNI 7338 private void sendMoveFocus(int frame, int node) { 7339 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7340 new WebViewCore.CursorData(frame, node, 0, 0)); 7341 } 7342 7343 // called by JNI 7344 private void sendMoveMouse(int frame, int node, int x, int y) { 7345 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7346 new WebViewCore.CursorData(frame, node, x, y)); 7347 } 7348 7349 /* 7350 * Send a mouse move event to the webcore thread. 7351 * 7352 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7353 * which wants key events, but it is not the focus. This 7354 * will make the visual appear as though nothing is in 7355 * focus. Remove the WebTextView, if present, and stop 7356 * drawing the blinking caret. 7357 * called by JNI 7358 */ 7359 private void sendMoveMouseIfLatest(boolean removeFocus) { 7360 if (removeFocus) { 7361 clearTextEntry(); 7362 } 7363 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7364 cursorData()); 7365 } 7366 7367 // called by JNI 7368 private void sendMotionUp(int touchGeneration, 7369 int frame, int node, int x, int y) { 7370 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7371 touchUpData.mMoveGeneration = touchGeneration; 7372 touchUpData.mFrame = frame; 7373 touchUpData.mNode = node; 7374 touchUpData.mX = x; 7375 touchUpData.mY = y; 7376 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7377 } 7378 7379 7380 private int getScaledMaxXScroll() { 7381 int width; 7382 if (mHeightCanMeasure == false) { 7383 width = getViewWidth() / 4; 7384 } else { 7385 Rect visRect = new Rect(); 7386 calcOurVisibleRect(visRect); 7387 width = visRect.width() / 2; 7388 } 7389 // FIXME the divisor should be retrieved from somewhere 7390 return viewToContentX(width); 7391 } 7392 7393 private int getScaledMaxYScroll() { 7394 int height; 7395 if (mHeightCanMeasure == false) { 7396 height = getViewHeight() / 4; 7397 } else { 7398 Rect visRect = new Rect(); 7399 calcOurVisibleRect(visRect); 7400 height = visRect.height() / 2; 7401 } 7402 // FIXME the divisor should be retrieved from somewhere 7403 // the closest thing today is hard-coded into ScrollView.java 7404 // (from ScrollView.java, line 363) int maxJump = height/2; 7405 return Math.round(height * mZoomManager.getInvScale()); 7406 } 7407 7408 /** 7409 * Called by JNI to invalidate view 7410 */ 7411 private void viewInvalidate() { 7412 invalidate(); 7413 } 7414 7415 /** 7416 * Pass the key directly to the page. This assumes that 7417 * nativePageShouldHandleShiftAndArrows() returned true. 7418 */ 7419 private void letPageHandleNavKey(int keyCode, long time, boolean down) { 7420 int keyEventAction; 7421 int eventHubAction; 7422 if (down) { 7423 keyEventAction = KeyEvent.ACTION_DOWN; 7424 eventHubAction = EventHub.KEY_DOWN; 7425 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7426 } else { 7427 keyEventAction = KeyEvent.ACTION_UP; 7428 eventHubAction = EventHub.KEY_UP; 7429 } 7430 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7431 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7432 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7433 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7434 , 0, 0, 0); 7435 mWebViewCore.sendMessage(eventHubAction, event); 7436 } 7437 7438 // return true if the key was handled 7439 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7440 long time) { 7441 if (mNativeClass == 0) { 7442 return false; 7443 } 7444 mLastCursorTime = time; 7445 mLastCursorBounds = nativeGetCursorRingBounds(); 7446 boolean keyHandled 7447 = nativeMoveCursor(keyCode, count, noScroll) == false; 7448 if (DebugFlags.WEB_VIEW) { 7449 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7450 + " mLastCursorTime=" + mLastCursorTime 7451 + " handled=" + keyHandled); 7452 } 7453 if (keyHandled == false || mHeightCanMeasure == false) { 7454 return keyHandled; 7455 } 7456 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7457 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7458 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7459 Rect visRect = new Rect(); 7460 calcOurVisibleRect(visRect); 7461 Rect outset = new Rect(visRect); 7462 int maxXScroll = visRect.width() / 2; 7463 int maxYScroll = visRect.height() / 2; 7464 outset.inset(-maxXScroll, -maxYScroll); 7465 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7466 return keyHandled; 7467 } 7468 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7469 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7470 maxXScroll); 7471 if (maxH > 0) { 7472 pinScrollBy(maxH, 0, true, 0); 7473 } else { 7474 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7475 -maxXScroll); 7476 if (maxH < 0) { 7477 pinScrollBy(maxH, 0, true, 0); 7478 } 7479 } 7480 if (mLastCursorBounds.isEmpty()) return keyHandled; 7481 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7482 return keyHandled; 7483 } 7484 if (DebugFlags.WEB_VIEW) { 7485 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7486 + contentCursorRingBounds); 7487 } 7488 requestRectangleOnScreen(viewCursorRingBounds); 7489 mUserScroll = true; 7490 return keyHandled; 7491 } 7492 7493 /** 7494 * @return If the page should receive Shift and arrows. 7495 */ 7496 private boolean pageShouldHandleShiftAndArrows() { 7497 // TODO: Maybe the injected script should announce its presence in 7498 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 7499 // will check that as one of the conditions it looks for 7500 return (nativePageShouldHandleShiftAndArrows() || mAccessibilityScriptInjected); 7501 } 7502 7503 /** 7504 * Set the background color. It's white by default. Pass 7505 * zero to make the view transparent. 7506 * @param color the ARGB color described by Color.java 7507 */ 7508 public void setBackgroundColor(int color) { 7509 mBackgroundColor = color; 7510 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7511 } 7512 7513 public void debugDump() { 7514 nativeDebugDump(); 7515 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7516 } 7517 7518 /** 7519 * Draw the HTML page into the specified canvas. This call ignores any 7520 * view-specific zoom, scroll offset, or other changes. It does not draw 7521 * any view-specific chrome, such as progress or URL bars. 7522 * 7523 * @hide only needs to be accessible to Browser and testing 7524 */ 7525 public void drawPage(Canvas canvas) { 7526 nativeDraw(canvas, 0, 0, false); 7527 } 7528 7529 /** 7530 * Set the time to wait between passing touches to WebCore. See also the 7531 * TOUCH_SENT_INTERVAL member for further discussion. 7532 * 7533 * @hide This is only used by the DRT test application. 7534 */ 7535 public void setTouchInterval(int interval) { 7536 mCurrentTouchInterval = interval; 7537 } 7538 7539 /** 7540 * Toggle whether multi touch events should be sent to webkit 7541 * no matter if UI wants to handle it first. 7542 * 7543 * @hide This is only used by the webkit layout test. 7544 */ 7545 public void setDeferMultiTouch(boolean value) { 7546 mDeferMultitouch = value; 7547 Log.v(LOGTAG, "set mDeferMultitouch to " + value); 7548 } 7549 7550 /** 7551 * Update our cache with updatedText. 7552 * @param updatedText The new text to put in our cache. 7553 */ 7554 /* package */ void updateCachedTextfield(String updatedText) { 7555 // Also place our generation number so that when we look at the cache 7556 // we recognize that it is up to date. 7557 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7558 } 7559 7560 /*package*/ void autoFillForm(int autoFillQueryId) { 7561 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 7562 } 7563 7564 private native int nativeCacheHitFramePointer(); 7565 private native Rect nativeCacheHitNodeBounds(); 7566 private native int nativeCacheHitNodePointer(); 7567 /* package */ native void nativeClearCursor(); 7568 private native void nativeCreate(int ptr); 7569 private native int nativeCursorFramePointer(); 7570 private native Rect nativeCursorNodeBounds(); 7571 private native int nativeCursorNodePointer(); 7572 /* package */ native boolean nativeCursorMatchesFocus(); 7573 private native boolean nativeCursorIntersects(Rect visibleRect); 7574 private native boolean nativeCursorIsAnchor(); 7575 private native boolean nativeCursorIsTextInput(); 7576 private native Point nativeCursorPosition(); 7577 private native String nativeCursorText(); 7578 /** 7579 * Returns true if the native cursor node says it wants to handle key events 7580 * (ala plugins). This can only be called if mNativeClass is non-zero! 7581 */ 7582 private native boolean nativeCursorWantsKeyEvents(); 7583 private native void nativeDebugDump(); 7584 private native void nativeDestroy(); 7585 7586 /** 7587 * Draw the picture set with a background color and extra. If 7588 * "splitIfNeeded" is true and the return value is not 0, the return value 7589 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 7590 * native allocation can be freed. 7591 */ 7592 private native int nativeDraw(Canvas canvas, int color, int extra, 7593 boolean splitIfNeeded); 7594 private native void nativeDumpDisplayTree(String urlOrNull); 7595 private native boolean nativeEvaluateLayersAnimations(); 7596 private native void nativeExtendSelection(int x, int y); 7597 private native int nativeFindAll(String findLower, String findUpper); 7598 private native void nativeFindNext(boolean forward); 7599 /* package */ native int nativeFocusCandidateFramePointer(); 7600 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7601 /* package */ native boolean nativeFocusCandidateIsPassword(); 7602 private native boolean nativeFocusCandidateIsRtlText(); 7603 private native boolean nativeFocusCandidateIsTextInput(); 7604 /* package */ native int nativeFocusCandidateMaxLength(); 7605 /* package */ native String nativeFocusCandidateName(); 7606 private native Rect nativeFocusCandidateNodeBounds(); 7607 /* package */ native int nativeFocusCandidatePointer(); 7608 private native String nativeFocusCandidateText(); 7609 private native int nativeFocusCandidateTextSize(); 7610 /** 7611 * Returns an integer corresponding to WebView.cpp::type. 7612 * See WebTextView.setType() 7613 */ 7614 private native int nativeFocusCandidateType(); 7615 private native boolean nativeFocusIsPlugin(); 7616 private native Rect nativeFocusNodeBounds(); 7617 /* package */ native int nativeFocusNodePointer(); 7618 private native Rect nativeGetCursorRingBounds(); 7619 private native String nativeGetSelection(); 7620 private native boolean nativeHasCursorNode(); 7621 private native boolean nativeHasFocusNode(); 7622 private native void nativeHideCursor(); 7623 private native boolean nativeHitSelection(int x, int y); 7624 private native String nativeImageURI(int x, int y); 7625 private native void nativeInstrumentReport(); 7626 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7627 // return true if the page has been scrolled 7628 private native boolean nativeMotionUp(int x, int y, int slop); 7629 // returns false if it handled the key 7630 private native boolean nativeMoveCursor(int keyCode, int count, 7631 boolean noScroll); 7632 private native int nativeMoveGeneration(); 7633 private native void nativeMoveSelection(int x, int y); 7634 /** 7635 * @return true if the page should get the shift and arrow keys, rather 7636 * than select text/navigation. 7637 * 7638 * If the focus is a plugin, or if the focus and cursor match and are 7639 * a contentEditable element, then the page should handle these keys. 7640 */ 7641 private native boolean nativePageShouldHandleShiftAndArrows(); 7642 private native boolean nativePointInNavCache(int x, int y, int slop); 7643 // Like many other of our native methods, you must make sure that 7644 // mNativeClass is not null before calling this method. 7645 private native void nativeRecordButtons(boolean focused, 7646 boolean pressed, boolean invalidate); 7647 private native void nativeResetSelection(); 7648 private native void nativeSelectAll(); 7649 private native void nativeSelectBestAt(Rect rect); 7650 private native int nativeSelectionX(); 7651 private native int nativeSelectionY(); 7652 private native int nativeFindIndex(); 7653 private native void nativeSetExtendSelection(); 7654 private native void nativeSetFindIsEmpty(); 7655 private native void nativeSetFindIsUp(boolean isUp); 7656 private native void nativeSetHeightCanMeasure(boolean measure); 7657 private native void nativeSetBaseLayer(int layer); 7658 private native void nativeShowCursorTimed(); 7659 private native void nativeReplaceBaseContent(int content); 7660 private native void nativeCopyBaseContentToPicture(Picture pict); 7661 private native boolean nativeHasContent(); 7662 private native void nativeSetSelectionPointer(boolean set, 7663 float scale, int x, int y); 7664 private native boolean nativeStartSelection(int x, int y); 7665 private native Rect nativeSubtractLayers(Rect content); 7666 private native int nativeTextGeneration(); 7667 // Never call this version except by updateCachedTextfield(String) - 7668 // we always want to pass in our generation number. 7669 private native void nativeUpdateCachedTextfield(String updatedText, 7670 int generation); 7671 private native boolean nativeWordSelection(int x, int y); 7672 // return NO_LEFTEDGE means failure. 7673 static final int NO_LEFTEDGE = -1; 7674 native int nativeGetBlockLeftEdge(int x, int y, float scale); 7675 7676 // Returns a pointer to the scrollable LayerAndroid at the given point. 7677 private native int nativeScrollableLayer(int x, int y); 7678 private native boolean nativeScrollLayer(int layer, int dx, int dy); 7679} 7680