WebView.java revision 5e02c431a3680368fa60a4a32a86e0dc31139666
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.Context; 22import android.content.DialogInterface; 23import android.content.Intent; 24import android.content.DialogInterface.OnCancelListener; 25import android.content.pm.PackageManager; 26import android.database.DataSetObserver; 27import android.graphics.Bitmap; 28import android.graphics.Canvas; 29import android.graphics.Color; 30import android.graphics.Interpolator; 31import android.graphics.Picture; 32import android.graphics.Point; 33import android.graphics.Rect; 34import android.graphics.RectF; 35import android.graphics.drawable.Drawable; 36import android.net.Uri; 37import android.net.http.SslCertificate; 38import android.os.Bundle; 39import android.os.Handler; 40import android.os.Message; 41import android.os.ServiceManager; 42import android.os.SystemClock; 43import android.speech.tts.TextToSpeech; 44import android.text.IClipboard; 45import android.text.Selection; 46import android.text.Spannable; 47import android.text.TextUtils; 48import android.util.AttributeSet; 49import android.util.EventLog; 50import android.util.Log; 51import android.util.TypedValue; 52import android.view.Gravity; 53import android.view.KeyEvent; 54import android.view.LayoutInflater; 55import android.view.MotionEvent; 56import android.view.ScaleGestureDetector; 57import android.view.SoundEffectConstants; 58import android.view.VelocityTracker; 59import android.view.View; 60import android.view.ViewConfiguration; 61import android.view.ViewGroup; 62import android.view.ViewTreeObserver; 63import android.view.accessibility.AccessibilityManager; 64import android.view.animation.AlphaAnimation; 65import android.view.inputmethod.EditorInfo; 66import android.view.inputmethod.InputConnection; 67import android.view.inputmethod.InputMethodManager; 68import android.webkit.WebTextView.AutoCompleteAdapter; 69import android.webkit.WebViewCore.EventHub; 70import android.webkit.WebViewCore.TouchEventData; 71import android.widget.AbsoluteLayout; 72import android.widget.Adapter; 73import android.widget.AdapterView; 74import android.widget.ArrayAdapter; 75import android.widget.CheckedTextView; 76import android.widget.LinearLayout; 77import android.widget.ListView; 78import android.widget.Scroller; 79import android.widget.Toast; 80import android.widget.ZoomButtonsController; 81import android.widget.AdapterView.OnItemClickListener; 82 83import java.io.File; 84import java.io.FileInputStream; 85import java.io.FileNotFoundException; 86import java.io.FileOutputStream; 87import java.net.URLDecoder; 88import java.util.ArrayList; 89import java.util.HashMap; 90import java.util.List; 91import java.util.Map; 92import java.util.Set; 93 94import junit.framework.Assert; 95 96/** 97 * <p>A View that displays web pages. This class is the basis upon which you 98 * can roll your own web browser or simply display some online content within your Activity. 99 * It uses the WebKit rendering engine to display 100 * web pages and includes methods to navigate forward and backward 101 * through a history, zoom in and out, perform text searches and more.</p> 102 * <p>To enable the built-in zoom, set 103 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 104 * (introduced in API version 3). 105 * <p>Note that, in order for your Activity to access the Internet and load web pages 106 * in a WebView, you must add the {@code INTERNET} permissions to your 107 * Android Manifest file:</p> 108 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 109 * 110 * <p>This must be a child of the <a 111 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 112 * element.</p> 113 * 114 * <h3>Basic usage</h3> 115 * 116 * <p>By default, a WebView provides no browser-like widgets, does not 117 * enable JavaScript and web page errors are ignored. If your goal is only 118 * to display some HTML as a part of your UI, this is probably fine; 119 * the user won't need to interact with the web page beyond reading 120 * it, and the web page won't need to interact with the user. If you 121 * actually want a full-blown web browser, then you probably want to 122 * invoke the Browser application with a URL Intent rather than show it 123 * with a WebView. For example: 124 * <pre> 125 * Uri uri = Uri.parse("http://www.example.com"); 126 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 127 * startActivity(intent); 128 * </pre> 129 * <p>See {@link android.content.Intent} for more information.</p> 130 * 131 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 132 * or set the entire Activity window as a WebView during {@link 133 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 134 * <pre class="prettyprint"> 135 * WebView webview = new WebView(this); 136 * setContentView(webview); 137 * </pre> 138 * 139 * <p>Then load the desired web page:</p> 140 * // Simplest usage: note that an exception will NOT be thrown 141 * // if there is an error loading this page (see below). 142 * webview.loadUrl("http://slashdot.org/"); 143 * 144 * // OR, you can also load from an HTML string: 145 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 146 * webview.loadData(summary, "text/html", "utf-8"); 147 * // ... although note that there are restrictions on what this HTML can do. 148 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 149 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 150 * </pre> 151 * 152 * <p>A WebView has several customization points where you can add your 153 * own behavior. These are:</p> 154 * 155 * <ul> 156 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 157 * This class is called when something that might impact a 158 * browser UI happens, for instance, progress updates and 159 * JavaScript alerts are sent here (see <a 160 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 161 * </li> 162 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 163 * It will be called when things happen that impact the 164 * rendering of the content, eg, errors or form submissions. You 165 * can also intercept URL loading here (via {@link 166 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 167 * shouldOverrideUrlLoading()}).</li> 168 * <li>Modifying the {@link android.webkit.WebSettings}, such as 169 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 170 * setJavaScriptEnabled()}. </li> 171 * <li>Adding JavaScript-to-Java interfaces with the {@link 172 * android.webkit.WebView#addJavascriptInterface} method. 173 * This lets you bind Java objects into the WebView so they can be 174 * controlled from the web pages JavaScript.</li> 175 * </ul> 176 * 177 * <p>Here's a more complicated example, showing error handling, 178 * settings, and progress notification:</p> 179 * 180 * <pre class="prettyprint"> 181 * // Let's display the progress in the activity title bar, like the 182 * // browser app does. 183 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 184 * 185 * webview.getSettings().setJavaScriptEnabled(true); 186 * 187 * final Activity activity = this; 188 * webview.setWebChromeClient(new WebChromeClient() { 189 * public void onProgressChanged(WebView view, int progress) { 190 * // Activities and WebViews measure progress with different scales. 191 * // The progress meter will automatically disappear when we reach 100% 192 * activity.setProgress(progress * 1000); 193 * } 194 * }); 195 * webview.setWebViewClient(new WebViewClient() { 196 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 197 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 198 * } 199 * }); 200 * 201 * webview.loadUrl("http://slashdot.org/"); 202 * </pre> 203 * 204 * <h3>Cookie and window management</h3> 205 * 206 * <p>For obvious security reasons, your application has its own 207 * cache, cookie store etc.—it does not share the Browser 208 * application's data. Cookies are managed on a separate thread, so 209 * operations like index building don't block the UI 210 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 211 * if you want to use cookies in your application. 212 * </p> 213 * 214 * <p>By default, requests by the HTML to open new windows are 215 * ignored. This is true whether they be opened by JavaScript or by 216 * the target attribute on a link. You can customize your 217 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 218 * and render them in whatever manner you want.</p> 219 * 220 * <p>The standard behavior for an Activity is to be destroyed and 221 * recreated when the device orientation or any other configuration changes. This will cause 222 * the WebView to reload the current page. If you don't want that, you 223 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 224 * changes, and then just leave the WebView alone. It'll automatically 225 * re-orient itself as appropriate. Read <a 226 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 227 * more information about how to handle configuration changes during runtime.</p> 228 * 229 * 230 * <h3>Building web pages to support different screen densities</h3> 231 * 232 * <p>The screen density of a device is based on the screen resolution. A screen with low density 233 * has fewer available pixels per inch, where a screen with high density 234 * has more — sometimes significantly more — pixels per inch. The density of a 235 * screen is important because, other things being equal, a UI element (such as a button) whose 236 * height and width are defined in terms of screen pixels will appear larger on the lower density 237 * screen and smaller on the higher density screen. 238 * For simplicity, Android collapses all actual screen densities into three generalized densities: 239 * high, medium, and low.</p> 240 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 241 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 242 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 243 * are bigger). 244 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 245 * you (as a web developer) target screens with different screen densities.</p> 246 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 247 * <ul> 248 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 249 * default scaling factor used for the current device. For example, if the value of {@code 250 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 251 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 252 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 253 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 254 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 255 * (discussed below), then you can stop this default scaling behavior.</li> 256 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 257 * densities for which this style sheet is to be used. The corresponding value should be either 258 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 259 * density, or high density screens, respectively. For example: 260 * <pre> 261 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 262 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 263 * which is the high density pixel ratio.</p> 264 * </li> 265 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 266 * this to specify the target density for which the web page is designed, using the following 267 * values: 268 * <ul> 269 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 270 * occurs.</li> 271 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 272 * as appropriate.</li> 273 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 274 * low density screens scale down. This is also the default behavior.</li> 275 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 276 * as appropriate.</li> 277 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 278 * values are 70-400).</li> 279 * </ul> 280 * <p>Here's an example meta tag to specify the target density:</p> 281 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 282 * </ul> 283 * <p>If you want to modify your web page for different densities, by using the {@code 284 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 285 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 286 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 287 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 288 * 289 * 290 */ 291@Widget 292public class WebView extends AbsoluteLayout 293 implements ViewTreeObserver.OnGlobalFocusChangeListener, 294 ViewGroup.OnHierarchyChangeListener { 295 296 // enable debug output for drag trackers 297 private static final boolean DEBUG_DRAG_TRACKER = false; 298 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 299 // the screen all-the-time. Good for profiling our drawing code 300 static private final boolean AUTO_REDRAW_HACK = false; 301 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 302 private boolean mAutoRedraw; 303 304 static final String LOGTAG = "webview"; 305 306 private ZoomManager mZoomManager; 307 308 /** 309 * Transportation object for returning WebView across thread boundaries. 310 */ 311 public class WebViewTransport { 312 private WebView mWebview; 313 314 /** 315 * Set the WebView to the transportation object. 316 * @param webview The WebView to transport. 317 */ 318 public synchronized void setWebView(WebView webview) { 319 mWebview = webview; 320 } 321 322 /** 323 * Return the WebView object. 324 * @return WebView The transported WebView object. 325 */ 326 public synchronized WebView getWebView() { 327 return mWebview; 328 } 329 } 330 331 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 332 private final CallbackProxy mCallbackProxy; 333 334 private final WebViewDatabase mDatabase; 335 336 // SSL certificate for the main top-level page (if secure) 337 private SslCertificate mCertificate; 338 339 // Native WebView pointer that is 0 until the native object has been 340 // created. 341 private int mNativeClass; 342 // This would be final but it needs to be set to null when the WebView is 343 // destroyed. 344 private WebViewCore mWebViewCore; 345 // Handler for dispatching UI messages. 346 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 347 private WebTextView mWebTextView; 348 // Used to ignore changes to webkit text that arrives to the UI side after 349 // more key events. 350 private int mTextGeneration; 351 352 /* package */ void incrementTextGeneration() { mTextGeneration++; } 353 354 // Used by WebViewCore to create child views. 355 /* package */ final ViewManager mViewManager; 356 357 // Used to display in full screen mode 358 PluginFullScreenHolder mFullScreenHolder; 359 360 /** 361 * Position of the last touch event. 362 */ 363 private float mLastTouchX; 364 private float mLastTouchY; 365 366 /** 367 * Time of the last touch event. 368 */ 369 private long mLastTouchTime; 370 371 /** 372 * Time of the last time sending touch event to WebViewCore 373 */ 374 private long mLastSentTouchTime; 375 376 /** 377 * The minimum elapsed time before sending another ACTION_MOVE event to 378 * WebViewCore. This really should be tuned for each type of the devices. 379 * For example in Google Map api test case, it takes Dream device at least 380 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 381 * triggering the layout and drawing the picture. While the same process 382 * takes 60+ms on the current high speed device. If we make 383 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 384 * to WebViewCore queue and the real layout and draw events will be pushed 385 * to further, which slows down the refresh rate. Choose 50 to favor the 386 * current high speed devices. For Dream like devices, 100 is a better 387 * choice. Maybe make this in the buildspec later. 388 */ 389 private static final int TOUCH_SENT_INTERVAL = 50; 390 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 391 392 /** 393 * Helper class to get velocity for fling 394 */ 395 VelocityTracker mVelocityTracker; 396 private int mMaximumFling; 397 private float mLastVelocity; 398 private float mLastVelX; 399 private float mLastVelY; 400 401 // only trigger accelerated fling if the new velocity is at least 402 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 403 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 404 405 /** 406 * Touch mode 407 */ 408 private int mTouchMode = TOUCH_DONE_MODE; 409 private static final int TOUCH_INIT_MODE = 1; 410 private static final int TOUCH_DRAG_START_MODE = 2; 411 private static final int TOUCH_DRAG_MODE = 3; 412 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 413 private static final int TOUCH_SHORTPRESS_MODE = 5; 414 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 415 private static final int TOUCH_DONE_MODE = 7; 416 private static final int TOUCH_SELECT_MODE = 8; 417 private static final int TOUCH_PINCH_DRAG = 9; 418 419 // Whether to forward the touch events to WebCore 420 private boolean mForwardTouchEvents = false; 421 422 // Whether to prevent default during touch. The initial value depends on 423 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 424 // for touch down. Otherwise UI will wait for the answer of the first 425 // confirmed move before taking over the control. 426 private static final int PREVENT_DEFAULT_NO = 0; 427 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 428 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 429 private static final int PREVENT_DEFAULT_YES = 3; 430 private static final int PREVENT_DEFAULT_IGNORE = 4; 431 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 432 433 // true when the touch movement exceeds the slop 434 private boolean mConfirmMove; 435 436 // if true, touch events will be first processed by WebCore, if prevent 437 // default is not set, the UI will continue handle them. 438 private boolean mDeferTouchProcess; 439 440 // to avoid interfering with the current touch events, track them 441 // separately. Currently no snapping or fling in the deferred process mode 442 private int mDeferTouchMode = TOUCH_DONE_MODE; 443 private float mLastDeferTouchX; 444 private float mLastDeferTouchY; 445 446 // To keep track of whether the current drag was initiated by a WebTextView, 447 // so that we know not to hide the cursor 448 boolean mDragFromTextInput; 449 450 // Whether or not to draw the cursor ring. 451 private boolean mDrawCursorRing = true; 452 453 // true if onPause has been called (and not onResume) 454 private boolean mIsPaused; 455 456 // true if, during a transition to a new page, we're delaying 457 // deleting a root layer until there's something to draw of the new page. 458 private boolean mDelayedDeleteRootLayer; 459 460 /** 461 * Customizable constant 462 */ 463 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 464 private int mTouchSlopSquare; 465 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 466 private int mDoubleTapSlopSquare; 467 // pre-computed density adjusted navigation slop 468 private int mNavSlop; 469 // This should be ViewConfiguration.getTapTimeout() 470 // But system time out is 100ms, which is too short for the browser. 471 // In the browser, if it switches out of tap too soon, jump tap won't work. 472 private static final int TAP_TIMEOUT = 200; 473 // This should be ViewConfiguration.getLongPressTimeout() 474 // But system time out is 500ms, which is too short for the browser. 475 // With a short timeout, it's difficult to treat trigger a short press. 476 private static final int LONG_PRESS_TIMEOUT = 1000; 477 // needed to avoid flinging after a pause of no movement 478 private static final int MIN_FLING_TIME = 250; 479 // draw unfiltered after drag is held without movement 480 private static final int MOTIONLESS_TIME = 100; 481 // The amount of content to overlap between two screens when going through 482 // pages with the space bar, in pixels. 483 private static final int PAGE_SCROLL_OVERLAP = 24; 484 485 /** 486 * These prevent calling requestLayout if either dimension is fixed. This 487 * depends on the layout parameters and the measure specs. 488 */ 489 boolean mWidthCanMeasure; 490 boolean mHeightCanMeasure; 491 492 // Remember the last dimensions we sent to the native side so we can avoid 493 // sending the same dimensions more than once. 494 int mLastWidthSent; 495 int mLastHeightSent; 496 497 private int mContentWidth; // cache of value from WebViewCore 498 private int mContentHeight; // cache of value from WebViewCore 499 500 // Need to have the separate control for horizontal and vertical scrollbar 501 // style than the View's single scrollbar style 502 private boolean mOverlayHorizontalScrollbar = true; 503 private boolean mOverlayVerticalScrollbar = false; 504 505 // our standard speed. this way small distances will be traversed in less 506 // time than large distances, but we cap the duration, so that very large 507 // distances won't take too long to get there. 508 private static final int STD_SPEED = 480; // pixels per second 509 // time for the longest scroll animation 510 private static final int MAX_DURATION = 750; // milliseconds 511 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 512 private Scroller mScroller; 513 514 private boolean mWrapContent; 515 private static final int MOTIONLESS_FALSE = 0; 516 private static final int MOTIONLESS_PENDING = 1; 517 private static final int MOTIONLESS_TRUE = 2; 518 private static final int MOTIONLESS_IGNORE = 3; 519 private int mHeldMotionless; 520 521 // whether support multi-touch 522 private boolean mSupportMultiTouch; 523 // use the framework's ScaleGestureDetector to handle multi-touch 524 private ScaleGestureDetector mScaleDetector; 525 526 // An instance for injecting accessibility in WebViews with disabled 527 // JavaScript or ones for which no accessibility script exists 528 private AccessibilityInjector mAccessibilityInjector; 529 530 // the anchor point in the document space where VIEW_SIZE_CHANGED should 531 // apply to 532 private int mAnchorX; 533 private int mAnchorY; 534 535 /* 536 * Private message ids 537 */ 538 private static final int REMEMBER_PASSWORD = 1; 539 private static final int NEVER_REMEMBER_PASSWORD = 2; 540 private static final int SWITCH_TO_SHORTPRESS = 3; 541 private static final int SWITCH_TO_LONGPRESS = 4; 542 private static final int RELEASE_SINGLE_TAP = 5; 543 private static final int REQUEST_FORM_DATA = 6; 544 private static final int RESUME_WEBCORE_PRIORITY = 7; 545 private static final int DRAG_HELD_MOTIONLESS = 8; 546 private static final int AWAKEN_SCROLL_BARS = 9; 547 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 548 549 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 550 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 551 552 /* 553 * Package message ids 554 */ 555 //! arg1=x, arg2=y 556 static final int SCROLL_TO_MSG_ID = 101; 557 static final int SCROLL_BY_MSG_ID = 102; 558 //! arg1=x, arg2=y 559 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 560 //! arg1=x, arg2=y 561 static final int SYNC_SCROLL_TO_MSG_ID = 104; 562 static final int NEW_PICTURE_MSG_ID = 105; 563 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 564 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 565 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 566 static final int UPDATE_ZOOM_RANGE = 109; 567 static final int UNHANDLED_NAV_KEY = 110; 568 static final int CLEAR_TEXT_ENTRY = 111; 569 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 570 static final int SHOW_RECT_MSG_ID = 113; 571 static final int LONG_PRESS_CENTER = 114; 572 static final int PREVENT_TOUCH_ID = 115; 573 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 574 // obj=Rect in doc coordinates 575 static final int INVAL_RECT_MSG_ID = 117; 576 static final int REQUEST_KEYBOARD = 118; 577 static final int DO_MOTION_UP = 119; 578 static final int SHOW_FULLSCREEN = 120; 579 static final int HIDE_FULLSCREEN = 121; 580 static final int DOM_FOCUS_CHANGED = 122; 581 static final int IMMEDIATE_REPAINT_MSG_ID = 123; 582 static final int SET_ROOT_LAYER_MSG_ID = 124; 583 static final int RETURN_LABEL = 125; 584 static final int FIND_AGAIN = 126; 585 static final int CENTER_FIT_RECT = 127; 586 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 587 static final int SET_SCROLLBAR_MODES = 129; 588 static final int SELECTION_STRING_CHANGED = 130; 589 590 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 591 private static final int LAST_PACKAGE_MSG_ID = SET_SCROLLBAR_MODES; 592 593 static final String[] HandlerPrivateDebugString = { 594 "REMEMBER_PASSWORD", // = 1; 595 "NEVER_REMEMBER_PASSWORD", // = 2; 596 "SWITCH_TO_SHORTPRESS", // = 3; 597 "SWITCH_TO_LONGPRESS", // = 4; 598 "RELEASE_SINGLE_TAP", // = 5; 599 "REQUEST_FORM_DATA", // = 6; 600 "RESUME_WEBCORE_PRIORITY", // = 7; 601 "DRAG_HELD_MOTIONLESS", // = 8; 602 "AWAKEN_SCROLL_BARS", // = 9; 603 "PREVENT_DEFAULT_TIMEOUT" // = 10; 604 }; 605 606 static final String[] HandlerPackageDebugString = { 607 "SCROLL_TO_MSG_ID", // = 101; 608 "SCROLL_BY_MSG_ID", // = 102; 609 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 610 "SYNC_SCROLL_TO_MSG_ID", // = 104; 611 "NEW_PICTURE_MSG_ID", // = 105; 612 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 613 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 614 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 615 "UPDATE_ZOOM_RANGE", // = 109; 616 "UNHANDLED_NAV_KEY", // = 110; 617 "CLEAR_TEXT_ENTRY", // = 111; 618 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 619 "SHOW_RECT_MSG_ID", // = 113; 620 "LONG_PRESS_CENTER", // = 114; 621 "PREVENT_TOUCH_ID", // = 115; 622 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 623 "INVAL_RECT_MSG_ID", // = 117; 624 "REQUEST_KEYBOARD", // = 118; 625 "DO_MOTION_UP", // = 119; 626 "SHOW_FULLSCREEN", // = 120; 627 "HIDE_FULLSCREEN", // = 121; 628 "DOM_FOCUS_CHANGED", // = 122; 629 "IMMEDIATE_REPAINT_MSG_ID", // = 123; 630 "SET_ROOT_LAYER_MSG_ID", // = 124; 631 "RETURN_LABEL", // = 125; 632 "FIND_AGAIN", // = 126; 633 "CENTER_FIT_RECT", // = 127; 634 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 635 "SET_SCROLLBAR_MODES" // = 129; 636 }; 637 638 // If the site doesn't use the viewport meta tag to specify the viewport, 639 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 640 static final int DEFAULT_VIEWPORT_WIDTH = 800; 641 642 // normally we try to fit the content to the minimum preferred width 643 // calculated by the Webkit. To avoid the bad behavior when some site's 644 // minimum preferred width keeps growing when changing the viewport width or 645 // the minimum preferred width is huge, an upper limit is needed. 646 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 647 648 // initial scale in percent. 0 means using default. 649 private int mInitialScaleInPercent = 0; 650 651 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 652 // engadget always have wider mContentWidth no matter what viewport size is. 653 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 654 float mTextWrapScale; 655 656 // default scale. Depending on the display density. 657 static int DEFAULT_SCALE_PERCENT; 658 private float mDefaultScale; 659 660 private static float MINIMUM_SCALE_INCREMENT = 0.01f; 661 662 // set to true temporarily during ScaleGesture triggered zoom 663 private boolean mPreviewZoomOnly = false; 664 665 // computed scale and inverse, from mZoomWidth. 666 private float mActualScale; 667 private float mInvActualScale; 668 // if this is non-zero, it is used on drawing rather than mActualScale 669 private float mZoomScale; 670 private float mInvInitialZoomScale; 671 private float mInvFinalZoomScale; 672 private int mInitialScrollX; 673 private int mInitialScrollY; 674 private long mZoomStart; 675 private static final int ZOOM_ANIMATION_LENGTH = 500; 676 677 private boolean mUserScroll = false; 678 679 private int mSnapScrollMode = SNAP_NONE; 680 private static final int SNAP_NONE = 0; 681 private static final int SNAP_LOCK = 1; // not a separate state 682 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 683 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 684 private boolean mSnapPositive; 685 686 // keep these in sync with their counterparts in WebView.cpp 687 private static final int DRAW_EXTRAS_NONE = 0; 688 private static final int DRAW_EXTRAS_FIND = 1; 689 private static final int DRAW_EXTRAS_SELECTION = 2; 690 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 691 692 // keep this in sync with WebCore:ScrollbarMode in WebKit 693 private static final int SCROLLBAR_AUTO = 0; 694 private static final int SCROLLBAR_ALWAYSOFF = 1; 695 // as we auto fade scrollbar, this is ignored. 696 private static final int SCROLLBAR_ALWAYSON = 2; 697 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 698 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 699 700 // the alias via which accessibility JavaScript interface is exposed 701 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 702 703 // JavaScript to inject the script chooser which will 704 // pick the right script for the current URL 705 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 706 "javascript:(function() {" + 707 " var chooser = document.createElement('script');" + 708 " chooser.type = 'text/javascript';" + 709 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 710 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 711 " })();"; 712 713 // Used to match key downs and key ups 714 private boolean mGotKeyDown; 715 716 /* package */ static boolean mLogEvent = true; 717 718 // for event log 719 private long mLastTouchUpTime = 0; 720 721 /** 722 * URI scheme for telephone number 723 */ 724 public static final String SCHEME_TEL = "tel:"; 725 /** 726 * URI scheme for email address 727 */ 728 public static final String SCHEME_MAILTO = "mailto:"; 729 /** 730 * URI scheme for map address 731 */ 732 public static final String SCHEME_GEO = "geo:0,0?q="; 733 734 private int mBackgroundColor = Color.WHITE; 735 736 // Used to notify listeners of a new picture. 737 private PictureListener mPictureListener; 738 /** 739 * Interface to listen for new pictures as they change. 740 */ 741 public interface PictureListener { 742 /** 743 * Notify the listener that the picture has changed. 744 * @param view The WebView that owns the picture. 745 * @param picture The new picture. 746 */ 747 public void onNewPicture(WebView view, Picture picture); 748 } 749 750 // FIXME: Want to make this public, but need to change the API file. 751 public /*static*/ class HitTestResult { 752 /** 753 * Default HitTestResult, where the target is unknown 754 */ 755 public static final int UNKNOWN_TYPE = 0; 756 /** 757 * HitTestResult for hitting a HTML::a tag 758 */ 759 public static final int ANCHOR_TYPE = 1; 760 /** 761 * HitTestResult for hitting a phone number 762 */ 763 public static final int PHONE_TYPE = 2; 764 /** 765 * HitTestResult for hitting a map address 766 */ 767 public static final int GEO_TYPE = 3; 768 /** 769 * HitTestResult for hitting an email address 770 */ 771 public static final int EMAIL_TYPE = 4; 772 /** 773 * HitTestResult for hitting an HTML::img tag 774 */ 775 public static final int IMAGE_TYPE = 5; 776 /** 777 * HitTestResult for hitting a HTML::a tag which contains HTML::img 778 */ 779 public static final int IMAGE_ANCHOR_TYPE = 6; 780 /** 781 * HitTestResult for hitting a HTML::a tag with src=http 782 */ 783 public static final int SRC_ANCHOR_TYPE = 7; 784 /** 785 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 786 */ 787 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 788 /** 789 * HitTestResult for hitting an edit text area 790 */ 791 public static final int EDIT_TEXT_TYPE = 9; 792 793 private int mType; 794 private String mExtra; 795 796 HitTestResult() { 797 mType = UNKNOWN_TYPE; 798 } 799 800 private void setType(int type) { 801 mType = type; 802 } 803 804 private void setExtra(String extra) { 805 mExtra = extra; 806 } 807 808 public int getType() { 809 return mType; 810 } 811 812 public String getExtra() { 813 return mExtra; 814 } 815 } 816 817 // These keep track of the center point of the zoom. They are used to 818 // determine the point around which we should zoom. 819 private float mZoomCenterX; 820 private float mZoomCenterY; 821 822 /** 823 * Construct a new WebView with a Context object. 824 * @param context A Context object used to access application assets. 825 */ 826 public WebView(Context context) { 827 this(context, null); 828 } 829 830 /** 831 * Construct a new WebView with layout parameters. 832 * @param context A Context object used to access application assets. 833 * @param attrs An AttributeSet passed to our parent. 834 */ 835 public WebView(Context context, AttributeSet attrs) { 836 this(context, attrs, com.android.internal.R.attr.webViewStyle); 837 } 838 839 /** 840 * Construct a new WebView with layout parameters and a default style. 841 * @param context A Context object used to access application assets. 842 * @param attrs An AttributeSet passed to our parent. 843 * @param defStyle The default style resource ID. 844 */ 845 public WebView(Context context, AttributeSet attrs, int defStyle) { 846 this(context, attrs, defStyle, null); 847 } 848 849 /** 850 * Construct a new WebView with layout parameters, a default style and a set 851 * of custom Javscript interfaces to be added to the WebView at initialization 852 * time. This guarantees that these interfaces will be available when the JS 853 * context is initialized. 854 * @param context A Context object used to access application assets. 855 * @param attrs An AttributeSet passed to our parent. 856 * @param defStyle The default style resource ID. 857 * @param javascriptInterfaces is a Map of interface names, as keys, and 858 * object implementing those interfaces, as values. 859 * @hide pending API council approval. 860 */ 861 protected WebView(Context context, AttributeSet attrs, int defStyle, 862 Map<String, Object> javascriptInterfaces) { 863 super(context, attrs, defStyle); 864 865 if (AccessibilityManager.getInstance(context).isEnabled()) { 866 if (javascriptInterfaces == null) { 867 javascriptInterfaces = new HashMap<String, Object>(); 868 } 869 exposeAccessibilityJavaScriptApi(javascriptInterfaces); 870 } 871 872 mCallbackProxy = new CallbackProxy(context, this); 873 mViewManager = new ViewManager(this); 874 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 875 mDatabase = WebViewDatabase.getInstance(context); 876 mScroller = new Scroller(context); 877 mZoomManager = new ZoomManager(this); 878 879 /* The init method must follow the creation of certain member variables, 880 * such as the mZoomManager. 881 */ 882 init(); 883 updateMultiTouchSupport(context); 884 } 885 886 void updateMultiTouchSupport(Context context) { 887 WebSettings settings = getSettings(); 888 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 889 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 890 && settings.supportZoom() && settings.getBuiltInZoomControls(); 891 if (mSupportMultiTouch && (mScaleDetector == null)) { 892 mScaleDetector = new ScaleGestureDetector(context, 893 new ScaleDetectorListener()); 894 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 895 mScaleDetector = null; 896 } 897 } 898 899 private void init() { 900 setWillNotDraw(false); 901 setFocusable(true); 902 setFocusableInTouchMode(true); 903 setClickable(true); 904 setLongClickable(true); 905 906 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 907 int slop = configuration.getScaledTouchSlop(); 908 mTouchSlopSquare = slop * slop; 909 mMinLockSnapReverseDistance = slop; 910 slop = configuration.getScaledDoubleTapSlop(); 911 mDoubleTapSlopSquare = slop * slop; 912 final float density = getContext().getResources().getDisplayMetrics().density; 913 // use one line height, 16 based on our current default font, for how 914 // far we allow a touch be away from the edge of a link 915 mNavSlop = (int) (16 * density); 916 // density adjusted scale factors 917 DEFAULT_SCALE_PERCENT = (int) (100 * density); 918 mDefaultScale = density; 919 mActualScale = density; 920 mInvActualScale = 1 / density; 921 mTextWrapScale = density; 922 mZoomManager.init(density); 923 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 924 } 925 926 /** 927 * Exposes accessibility APIs to JavaScript by appending them to the JavaScript 928 * interfaces map provided by the WebView client. In case of conflicting 929 * alias with the one of the accessibility API the user specified one wins. 930 * 931 * @param javascriptInterfaces A map with interfaces to be exposed to JavaScript. 932 */ 933 private void exposeAccessibilityJavaScriptApi(Map<String, Object> javascriptInterfaces) { 934 if (javascriptInterfaces.containsKey(ALIAS_ACCESSIBILITY_JS_INTERFACE)) { 935 Log.w(LOGTAG, "JavaScript interface mapped to \"" + ALIAS_ACCESSIBILITY_JS_INTERFACE 936 + "\" overrides the accessibility API JavaScript interface. No accessibility" 937 + "API will be exposed to JavaScript!"); 938 return; 939 } 940 941 // expose the TTS for now ... 942 javascriptInterfaces.put(ALIAS_ACCESSIBILITY_JS_INTERFACE, 943 new TextToSpeech(getContext(), null)); 944 } 945 946 /* package */void updateDefaultZoomDensity(int zoomDensity) { 947 final float density = getContext().getResources().getDisplayMetrics().density 948 * 100 / zoomDensity; 949 if (Math.abs(density - mDefaultScale) > 0.01) { 950 float scaleFactor = density / mDefaultScale; 951 // adjust the limits 952 mNavSlop = (int) (16 * density); 953 DEFAULT_SCALE_PERCENT = (int) (100 * density); 954 mZoomManager.DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 955 mZoomManager.DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 956 mDefaultScale = density; 957 mZoomManager.mMaxZoomScale *= scaleFactor; 958 mZoomManager.mMinZoomScale *= scaleFactor; 959 setNewZoomScale(mActualScale * scaleFactor, true, false); 960 } 961 } 962 963 /* package */ boolean onSavePassword(String schemePlusHost, String username, 964 String password, final Message resumeMsg) { 965 boolean rVal = false; 966 if (resumeMsg == null) { 967 // null resumeMsg implies saving password silently 968 mDatabase.setUsernamePassword(schemePlusHost, username, password); 969 } else { 970 final Message remember = mPrivateHandler.obtainMessage( 971 REMEMBER_PASSWORD); 972 remember.getData().putString("host", schemePlusHost); 973 remember.getData().putString("username", username); 974 remember.getData().putString("password", password); 975 remember.obj = resumeMsg; 976 977 final Message neverRemember = mPrivateHandler.obtainMessage( 978 NEVER_REMEMBER_PASSWORD); 979 neverRemember.getData().putString("host", schemePlusHost); 980 neverRemember.getData().putString("username", username); 981 neverRemember.getData().putString("password", password); 982 neverRemember.obj = resumeMsg; 983 984 new AlertDialog.Builder(getContext()) 985 .setTitle(com.android.internal.R.string.save_password_label) 986 .setMessage(com.android.internal.R.string.save_password_message) 987 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 988 new DialogInterface.OnClickListener() { 989 public void onClick(DialogInterface dialog, int which) { 990 resumeMsg.sendToTarget(); 991 } 992 }) 993 .setNeutralButton(com.android.internal.R.string.save_password_remember, 994 new DialogInterface.OnClickListener() { 995 public void onClick(DialogInterface dialog, int which) { 996 remember.sendToTarget(); 997 } 998 }) 999 .setNegativeButton(com.android.internal.R.string.save_password_never, 1000 new DialogInterface.OnClickListener() { 1001 public void onClick(DialogInterface dialog, int which) { 1002 neverRemember.sendToTarget(); 1003 } 1004 }) 1005 .setOnCancelListener(new OnCancelListener() { 1006 public void onCancel(DialogInterface dialog) { 1007 resumeMsg.sendToTarget(); 1008 } 1009 }).show(); 1010 // Return true so that WebViewCore will pause while the dialog is 1011 // up. 1012 rVal = true; 1013 } 1014 return rVal; 1015 } 1016 1017 @Override 1018 public void setScrollBarStyle(int style) { 1019 if (style == View.SCROLLBARS_INSIDE_INSET 1020 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1021 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1022 } else { 1023 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1024 } 1025 super.setScrollBarStyle(style); 1026 } 1027 1028 /** 1029 * Specify whether the horizontal scrollbar has overlay style. 1030 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1031 */ 1032 public void setHorizontalScrollbarOverlay(boolean overlay) { 1033 mOverlayHorizontalScrollbar = overlay; 1034 } 1035 1036 /** 1037 * Specify whether the vertical scrollbar has overlay style. 1038 * @param overlay TRUE if vertical scrollbar should have overlay style. 1039 */ 1040 public void setVerticalScrollbarOverlay(boolean overlay) { 1041 mOverlayVerticalScrollbar = overlay; 1042 } 1043 1044 /** 1045 * Return whether horizontal scrollbar has overlay style 1046 * @return TRUE if horizontal scrollbar has overlay style. 1047 */ 1048 public boolean overlayHorizontalScrollbar() { 1049 return mOverlayHorizontalScrollbar; 1050 } 1051 1052 /** 1053 * Return whether vertical scrollbar has overlay style 1054 * @return TRUE if vertical scrollbar has overlay style. 1055 */ 1056 public boolean overlayVerticalScrollbar() { 1057 return mOverlayVerticalScrollbar; 1058 } 1059 1060 /* 1061 * Return the width of the view where the content of WebView should render 1062 * to. 1063 * Note: this can be called from WebCoreThread. 1064 */ 1065 /* package */ int getViewWidth() { 1066 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1067 return getWidth(); 1068 } else { 1069 return getWidth() - getVerticalScrollbarWidth(); 1070 } 1071 } 1072 1073 /* 1074 * returns the height of the titlebarview (if any). Does not care about 1075 * scrolling 1076 */ 1077 private int getTitleHeight() { 1078 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1079 } 1080 1081 /* 1082 * Return the amount of the titlebarview (if any) that is visible 1083 */ 1084 private int getVisibleTitleHeight() { 1085 return Math.max(getTitleHeight() - mScrollY, 0); 1086 } 1087 1088 /* 1089 * Return the height of the view where the content of WebView should render 1090 * to. Note that this excludes mTitleBar, if there is one. 1091 * Note: this can be called from WebCoreThread. 1092 */ 1093 /* package */ int getViewHeight() { 1094 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1095 } 1096 1097 private int getViewHeightWithTitle() { 1098 int height = getHeight(); 1099 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1100 height -= getHorizontalScrollbarHeight(); 1101 } 1102 return height; 1103 } 1104 1105 /** 1106 * @return The SSL certificate for the main top-level page or null if 1107 * there is no certificate (the site is not secure). 1108 */ 1109 public SslCertificate getCertificate() { 1110 return mCertificate; 1111 } 1112 1113 /** 1114 * Sets the SSL certificate for the main top-level page. 1115 */ 1116 public void setCertificate(SslCertificate certificate) { 1117 if (DebugFlags.WEB_VIEW) { 1118 Log.v(LOGTAG, "setCertificate=" + certificate); 1119 } 1120 // here, the certificate can be null (if the site is not secure) 1121 mCertificate = certificate; 1122 } 1123 1124 //------------------------------------------------------------------------- 1125 // Methods called by activity 1126 //------------------------------------------------------------------------- 1127 1128 /** 1129 * Save the username and password for a particular host in the WebView's 1130 * internal database. 1131 * @param host The host that required the credentials. 1132 * @param username The username for the given host. 1133 * @param password The password for the given host. 1134 */ 1135 public void savePassword(String host, String username, String password) { 1136 mDatabase.setUsernamePassword(host, username, password); 1137 } 1138 1139 /** 1140 * Set the HTTP authentication credentials for a given host and realm. 1141 * 1142 * @param host The host for the credentials. 1143 * @param realm The realm for the credentials. 1144 * @param username The username for the password. If it is null, it means 1145 * password can't be saved. 1146 * @param password The password 1147 */ 1148 public void setHttpAuthUsernamePassword(String host, String realm, 1149 String username, String password) { 1150 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1151 } 1152 1153 /** 1154 * Retrieve the HTTP authentication username and password for a given 1155 * host & realm pair 1156 * 1157 * @param host The host for which the credentials apply. 1158 * @param realm The realm for which the credentials apply. 1159 * @return String[] if found, String[0] is username, which can be null and 1160 * String[1] is password. Return null if it can't find anything. 1161 */ 1162 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1163 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1164 } 1165 1166 /** 1167 * Destroy the internal state of the WebView. This method should be called 1168 * after the WebView has been removed from the view system. No other 1169 * methods may be called on a WebView after destroy. 1170 */ 1171 public void destroy() { 1172 clearTextEntry(false); 1173 if (mWebViewCore != null) { 1174 // Set the handlers to null before destroying WebViewCore so no 1175 // more messages will be posted. 1176 mCallbackProxy.setWebViewClient(null); 1177 mCallbackProxy.setWebChromeClient(null); 1178 // Tell WebViewCore to destroy itself 1179 synchronized (this) { 1180 WebViewCore webViewCore = mWebViewCore; 1181 mWebViewCore = null; // prevent using partial webViewCore 1182 webViewCore.destroy(); 1183 } 1184 // Remove any pending messages that might not be serviced yet. 1185 mPrivateHandler.removeCallbacksAndMessages(null); 1186 mCallbackProxy.removeCallbacksAndMessages(null); 1187 // Wake up the WebCore thread just in case it is waiting for a 1188 // javascript dialog. 1189 synchronized (mCallbackProxy) { 1190 mCallbackProxy.notify(); 1191 } 1192 } 1193 if (mNativeClass != 0) { 1194 nativeDestroy(); 1195 mNativeClass = 0; 1196 } 1197 } 1198 1199 /** 1200 * Enables platform notifications of data state and proxy changes. 1201 */ 1202 public static void enablePlatformNotifications() { 1203 Network.enablePlatformNotifications(); 1204 } 1205 1206 /** 1207 * If platform notifications are enabled, this should be called 1208 * from the Activity's onPause() or onStop(). 1209 */ 1210 public static void disablePlatformNotifications() { 1211 Network.disablePlatformNotifications(); 1212 } 1213 1214 /** 1215 * Sets JavaScript engine flags. 1216 * 1217 * @param flags JS engine flags in a String 1218 * 1219 * @hide pending API solidification 1220 */ 1221 public void setJsFlags(String flags) { 1222 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1223 } 1224 1225 /** 1226 * Inform WebView of the network state. This is used to set 1227 * the javascript property window.navigator.isOnline and 1228 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1229 * @param networkUp boolean indicating if network is available 1230 */ 1231 public void setNetworkAvailable(boolean networkUp) { 1232 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1233 networkUp ? 1 : 0, 0); 1234 } 1235 1236 /** 1237 * Inform WebView about the current network type. 1238 * {@hide} 1239 */ 1240 public void setNetworkType(String type, String subtype) { 1241 Map<String, String> map = new HashMap<String, String>(); 1242 map.put("type", type); 1243 map.put("subtype", subtype); 1244 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1245 } 1246 /** 1247 * Save the state of this WebView used in 1248 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1249 * method no longer stores the display data for this WebView. The previous 1250 * behavior could potentially leak files if {@link #restoreState} was never 1251 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1252 * and restoring the display data. 1253 * @param outState The Bundle to store the WebView state. 1254 * @return The same copy of the back/forward list used to save the state. If 1255 * saveState fails, the returned list will be null. 1256 * @see #savePicture 1257 * @see #restorePicture 1258 */ 1259 public WebBackForwardList saveState(Bundle outState) { 1260 if (outState == null) { 1261 return null; 1262 } 1263 // We grab a copy of the back/forward list because a client of WebView 1264 // may have invalidated the history list by calling clearHistory. 1265 WebBackForwardList list = copyBackForwardList(); 1266 final int currentIndex = list.getCurrentIndex(); 1267 final int size = list.getSize(); 1268 // We should fail saving the state if the list is empty or the index is 1269 // not in a valid range. 1270 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1271 return null; 1272 } 1273 outState.putInt("index", currentIndex); 1274 // FIXME: This should just be a byte[][] instead of ArrayList but 1275 // Parcel.java does not have the code to handle multi-dimensional 1276 // arrays. 1277 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1278 for (int i = 0; i < size; i++) { 1279 WebHistoryItem item = list.getItemAtIndex(i); 1280 if (null == item) { 1281 // FIXME: this shouldn't happen 1282 // need to determine how item got set to null 1283 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1284 return null; 1285 } 1286 byte[] data = item.getFlattenedData(); 1287 if (data == null) { 1288 // It would be very odd to not have any data for a given history 1289 // item. And we will fail to rebuild the history list without 1290 // flattened data. 1291 return null; 1292 } 1293 history.add(data); 1294 } 1295 outState.putSerializable("history", history); 1296 if (mCertificate != null) { 1297 outState.putBundle("certificate", 1298 SslCertificate.saveState(mCertificate)); 1299 } 1300 return list; 1301 } 1302 1303 /** 1304 * Save the current display data to the Bundle given. Used in conjunction 1305 * with {@link #saveState}. 1306 * @param b A Bundle to store the display data. 1307 * @param dest The file to store the serialized picture data. Will be 1308 * overwritten with this WebView's picture data. 1309 * @return True if the picture was successfully saved. 1310 */ 1311 public boolean savePicture(Bundle b, final File dest) { 1312 if (dest == null || b == null) { 1313 return false; 1314 } 1315 final Picture p = capturePicture(); 1316 // Use a temporary file while writing to ensure the destination file 1317 // contains valid data. 1318 final File temp = new File(dest.getPath() + ".writing"); 1319 new Thread(new Runnable() { 1320 public void run() { 1321 try { 1322 FileOutputStream out = new FileOutputStream(temp); 1323 p.writeToStream(out); 1324 out.close(); 1325 // Writing the picture succeeded, rename the temporary file 1326 // to the destination. 1327 temp.renameTo(dest); 1328 } catch (Exception e) { 1329 // too late to do anything about it. 1330 } finally { 1331 temp.delete(); 1332 } 1333 } 1334 }).start(); 1335 // now update the bundle 1336 b.putInt("scrollX", mScrollX); 1337 b.putInt("scrollY", mScrollY); 1338 b.putFloat("scale", mActualScale); 1339 b.putFloat("textwrapScale", mTextWrapScale); 1340 b.putBoolean("overview", mZoomManager.mInZoomOverview); 1341 return true; 1342 } 1343 1344 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1345 int sx = b.getInt("scrollX", 0); 1346 int sy = b.getInt("scrollY", 0); 1347 float scale = b.getFloat("scale", 1.0f); 1348 mDrawHistory = true; 1349 mHistoryPicture = p; 1350 mScrollX = sx; 1351 mScrollY = sy; 1352 mHistoryWidth = Math.round(p.getWidth() * scale); 1353 mHistoryHeight = Math.round(p.getHeight() * scale); 1354 // as getWidth() / getHeight() of the view are not available yet, set up 1355 // mActualScale, so that when onSizeChanged() is called, the rest will 1356 // be set correctly 1357 mActualScale = scale; 1358 mInvActualScale = 1 / scale; 1359 mTextWrapScale = b.getFloat("textwrapScale", scale); 1360 mZoomManager.mInZoomOverview = b.getBoolean("overview"); 1361 invalidate(); 1362 } 1363 1364 /** 1365 * Restore the display data that was save in {@link #savePicture}. Used in 1366 * conjunction with {@link #restoreState}. 1367 * @param b A Bundle containing the saved display data. 1368 * @param src The file where the picture data was stored. 1369 * @return True if the picture was successfully restored. 1370 */ 1371 public boolean restorePicture(Bundle b, File src) { 1372 if (src == null || b == null) { 1373 return false; 1374 } 1375 if (!src.exists()) { 1376 return false; 1377 } 1378 try { 1379 final FileInputStream in = new FileInputStream(src); 1380 final Bundle copy = new Bundle(b); 1381 new Thread(new Runnable() { 1382 public void run() { 1383 final Picture p = Picture.createFromStream(in); 1384 if (p != null) { 1385 // Post a runnable on the main thread to update the 1386 // history picture fields. 1387 mPrivateHandler.post(new Runnable() { 1388 public void run() { 1389 restoreHistoryPictureFields(p, copy); 1390 } 1391 }); 1392 } 1393 try { 1394 in.close(); 1395 } catch (Exception e) { 1396 // Nothing we can do now. 1397 } 1398 } 1399 }).start(); 1400 } catch (FileNotFoundException e){ 1401 e.printStackTrace(); 1402 } 1403 return true; 1404 } 1405 1406 /** 1407 * Restore the state of this WebView from the given map used in 1408 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1409 * be called to restore the state of the WebView before using the object. If 1410 * it is called after the WebView has had a chance to build state (load 1411 * pages, create a back/forward list, etc.) there may be undesirable 1412 * side-effects. Please note that this method no longer restores the 1413 * display data for this WebView. See {@link #savePicture} and {@link 1414 * #restorePicture} for saving and restoring the display data. 1415 * @param inState The incoming Bundle of state. 1416 * @return The restored back/forward list or null if restoreState failed. 1417 * @see #savePicture 1418 * @see #restorePicture 1419 */ 1420 public WebBackForwardList restoreState(Bundle inState) { 1421 WebBackForwardList returnList = null; 1422 if (inState == null) { 1423 return returnList; 1424 } 1425 if (inState.containsKey("index") && inState.containsKey("history")) { 1426 mCertificate = SslCertificate.restoreState( 1427 inState.getBundle("certificate")); 1428 1429 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1430 final int index = inState.getInt("index"); 1431 // We can't use a clone of the list because we need to modify the 1432 // shared copy, so synchronize instead to prevent concurrent 1433 // modifications. 1434 synchronized (list) { 1435 final List<byte[]> history = 1436 (List<byte[]>) inState.getSerializable("history"); 1437 final int size = history.size(); 1438 // Check the index bounds so we don't crash in native code while 1439 // restoring the history index. 1440 if (index < 0 || index >= size) { 1441 return null; 1442 } 1443 for (int i = 0; i < size; i++) { 1444 byte[] data = history.remove(0); 1445 if (data == null) { 1446 // If we somehow have null data, we cannot reconstruct 1447 // the item and thus our history list cannot be rebuilt. 1448 return null; 1449 } 1450 WebHistoryItem item = new WebHistoryItem(data); 1451 list.addHistoryItem(item); 1452 } 1453 // Grab the most recent copy to return to the caller. 1454 returnList = copyBackForwardList(); 1455 // Update the copy to have the correct index. 1456 returnList.setCurrentIndex(index); 1457 } 1458 // Remove all pending messages because we are restoring previous 1459 // state. 1460 mWebViewCore.removeMessages(); 1461 // Send a restore state message. 1462 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1463 } 1464 return returnList; 1465 } 1466 1467 /** 1468 * Load the given url with the extra headers. 1469 * @param url The url of the resource to load. 1470 * @param extraHeaders The extra headers sent with this url. This should not 1471 * include the common headers like "user-agent". If it does, it 1472 * will be replaced by the intrinsic value of the WebView. 1473 */ 1474 public void loadUrl(String url, Map<String, String> extraHeaders) { 1475 switchOutDrawHistory(); 1476 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1477 arg.mUrl = url; 1478 arg.mExtraHeaders = extraHeaders; 1479 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1480 clearTextEntry(false); 1481 } 1482 1483 /** 1484 * Load the given url. 1485 * @param url The url of the resource to load. 1486 */ 1487 public void loadUrl(String url) { 1488 if (url == null) { 1489 return; 1490 } 1491 loadUrl(url, null); 1492 } 1493 1494 /** 1495 * Load the url with postData using "POST" method into the WebView. If url 1496 * is not a network url, it will be loaded with {link 1497 * {@link #loadUrl(String)} instead. 1498 * 1499 * @param url The url of the resource to load. 1500 * @param postData The data will be passed to "POST" request. 1501 */ 1502 public void postUrl(String url, byte[] postData) { 1503 if (URLUtil.isNetworkUrl(url)) { 1504 switchOutDrawHistory(); 1505 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1506 arg.mUrl = url; 1507 arg.mPostData = postData; 1508 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1509 clearTextEntry(false); 1510 } else { 1511 loadUrl(url); 1512 } 1513 } 1514 1515 /** 1516 * Load the given data into the WebView. This will load the data into 1517 * WebView using the data: scheme. Content loaded through this mechanism 1518 * does not have the ability to load content from the network. 1519 * @param data A String of data in the given encoding. The date must 1520 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1521 * %27, %3f respectively. 1522 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1523 * @param encoding The encoding of the data. i.e. utf-8, base64 1524 */ 1525 public void loadData(String data, String mimeType, String encoding) { 1526 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1527 } 1528 1529 /** 1530 * Load the given data into the WebView, use the provided URL as the base 1531 * URL for the content. The base URL is the URL that represents the page 1532 * that is loaded through this interface. As such, it is used to resolve any 1533 * relative URLs. The historyUrl is used for the history entry. 1534 * <p> 1535 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1536 * files through "file:///android_asset/" for the sub resources is more 1537 * restricted. If you provide null or empty string as baseUrl, you won't be 1538 * able to access asset files. If the baseUrl is anything other than 1539 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1540 * sub resources. 1541 * 1542 * @param baseUrl Url to resolve relative paths with, if null defaults to 1543 * "about:blank" 1544 * @param data A String of data in the given encoding. 1545 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1546 * defaults to "text/html" 1547 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1548 * @param historyUrl URL to use as the history entry. Can be null. 1549 */ 1550 public void loadDataWithBaseURL(String baseUrl, String data, 1551 String mimeType, String encoding, String historyUrl) { 1552 1553 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1554 loadData(data, mimeType, encoding); 1555 return; 1556 } 1557 switchOutDrawHistory(); 1558 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1559 arg.mBaseUrl = baseUrl; 1560 arg.mData = data; 1561 arg.mMimeType = mimeType; 1562 arg.mEncoding = encoding; 1563 arg.mHistoryUrl = historyUrl; 1564 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1565 clearTextEntry(false); 1566 } 1567 1568 /** 1569 * Stop the current load. 1570 */ 1571 public void stopLoading() { 1572 // TODO: should we clear all the messages in the queue before sending 1573 // STOP_LOADING? 1574 switchOutDrawHistory(); 1575 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1576 } 1577 1578 /** 1579 * Reload the current url. 1580 */ 1581 public void reload() { 1582 clearTextEntry(false); 1583 switchOutDrawHistory(); 1584 mWebViewCore.sendMessage(EventHub.RELOAD); 1585 } 1586 1587 /** 1588 * Return true if this WebView has a back history item. 1589 * @return True iff this WebView has a back history item. 1590 */ 1591 public boolean canGoBack() { 1592 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1593 synchronized (l) { 1594 if (l.getClearPending()) { 1595 return false; 1596 } else { 1597 return l.getCurrentIndex() > 0; 1598 } 1599 } 1600 } 1601 1602 /** 1603 * Go back in the history of this WebView. 1604 */ 1605 public void goBack() { 1606 goBackOrForward(-1); 1607 } 1608 1609 /** 1610 * Return true if this WebView has a forward history item. 1611 * @return True iff this Webview has a forward history item. 1612 */ 1613 public boolean canGoForward() { 1614 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1615 synchronized (l) { 1616 if (l.getClearPending()) { 1617 return false; 1618 } else { 1619 return l.getCurrentIndex() < l.getSize() - 1; 1620 } 1621 } 1622 } 1623 1624 /** 1625 * Go forward in the history of this WebView. 1626 */ 1627 public void goForward() { 1628 goBackOrForward(1); 1629 } 1630 1631 /** 1632 * Return true if the page can go back or forward the given 1633 * number of steps. 1634 * @param steps The negative or positive number of steps to move the 1635 * history. 1636 */ 1637 public boolean canGoBackOrForward(int steps) { 1638 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1639 synchronized (l) { 1640 if (l.getClearPending()) { 1641 return false; 1642 } else { 1643 int newIndex = l.getCurrentIndex() + steps; 1644 return newIndex >= 0 && newIndex < l.getSize(); 1645 } 1646 } 1647 } 1648 1649 /** 1650 * Go to the history item that is the number of steps away from 1651 * the current item. Steps is negative if backward and positive 1652 * if forward. 1653 * @param steps The number of steps to take back or forward in the back 1654 * forward list. 1655 */ 1656 public void goBackOrForward(int steps) { 1657 goBackOrForward(steps, false); 1658 } 1659 1660 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1661 if (steps != 0) { 1662 clearTextEntry(false); 1663 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1664 ignoreSnapshot ? 1 : 0); 1665 } 1666 } 1667 1668 private boolean extendScroll(int y) { 1669 int finalY = mScroller.getFinalY(); 1670 int newY = pinLocY(finalY + y); 1671 if (newY == finalY) return false; 1672 mScroller.setFinalY(newY); 1673 mScroller.extendDuration(computeDuration(0, y)); 1674 return true; 1675 } 1676 1677 /** 1678 * Scroll the contents of the view up by half the view size 1679 * @param top true to jump to the top of the page 1680 * @return true if the page was scrolled 1681 */ 1682 public boolean pageUp(boolean top) { 1683 if (mNativeClass == 0) { 1684 return false; 1685 } 1686 nativeClearCursor(); // start next trackball movement from page edge 1687 if (top) { 1688 // go to the top of the document 1689 return pinScrollTo(mScrollX, 0, true, 0); 1690 } 1691 // Page up 1692 int h = getHeight(); 1693 int y; 1694 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1695 y = -h + PAGE_SCROLL_OVERLAP; 1696 } else { 1697 y = -h / 2; 1698 } 1699 mUserScroll = true; 1700 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1701 : extendScroll(y); 1702 } 1703 1704 /** 1705 * Scroll the contents of the view down by half the page size 1706 * @param bottom true to jump to bottom of page 1707 * @return true if the page was scrolled 1708 */ 1709 public boolean pageDown(boolean bottom) { 1710 if (mNativeClass == 0) { 1711 return false; 1712 } 1713 nativeClearCursor(); // start next trackball movement from page edge 1714 if (bottom) { 1715 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1716 } 1717 // Page down. 1718 int h = getHeight(); 1719 int y; 1720 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1721 y = h - PAGE_SCROLL_OVERLAP; 1722 } else { 1723 y = h / 2; 1724 } 1725 mUserScroll = true; 1726 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1727 : extendScroll(y); 1728 } 1729 1730 /** 1731 * Clear the view so that onDraw() will draw nothing but white background, 1732 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1733 */ 1734 public void clearView() { 1735 mContentWidth = 0; 1736 mContentHeight = 0; 1737 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1738 } 1739 1740 /** 1741 * Return a new picture that captures the current display of the webview. 1742 * This is a copy of the display, and will be unaffected if the webview 1743 * later loads a different URL. 1744 * 1745 * @return a picture containing the current contents of the view. Note this 1746 * picture is of the entire document, and is not restricted to the 1747 * bounds of the view. 1748 */ 1749 public Picture capturePicture() { 1750 if (null == mWebViewCore) return null; // check for out of memory tab 1751 return mWebViewCore.copyContentPicture(); 1752 } 1753 1754 /** 1755 * Return true if the browser is displaying a TextView for text input. 1756 */ 1757 private boolean inEditingMode() { 1758 return mWebTextView != null && mWebTextView.getParent() != null; 1759 } 1760 1761 /** 1762 * Remove the WebTextView. 1763 * @param disableFocusController If true, send a message to webkit 1764 * disabling the focus controller, so the caret stops blinking. 1765 */ 1766 private void clearTextEntry(boolean disableFocusController) { 1767 if (inEditingMode()) { 1768 mWebTextView.remove(); 1769 if (disableFocusController) { 1770 setFocusControllerInactive(); 1771 } 1772 } 1773 } 1774 1775 /** 1776 * Return the current scale of the WebView 1777 * @return The current scale. 1778 */ 1779 public float getScale() { 1780 return mActualScale; 1781 } 1782 1783 /** 1784 * Set the initial scale for the WebView. 0 means default. If 1785 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1786 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1787 * WebView starts will this value as initial scale. 1788 * 1789 * @param scaleInPercent The initial scale in percent. 1790 */ 1791 public void setInitialScale(int scaleInPercent) { 1792 mInitialScaleInPercent = scaleInPercent; 1793 } 1794 1795 /** 1796 * Invoke the graphical zoom picker widget for this WebView. This will 1797 * result in the zoom widget appearing on the screen to control the zoom 1798 * level of this WebView. 1799 */ 1800 public void invokeZoomPicker() { 1801 if (!getSettings().supportZoom()) { 1802 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1803 return; 1804 } 1805 clearTextEntry(false); 1806 mZoomManager.invokeZoomPicker(); 1807 } 1808 1809 /** 1810 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1811 * is found and the anchor has a non-javascript url, the HitTestResult type 1812 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1813 * anchor does not have a url or if it is a javascript url, the type will 1814 * be UNKNOWN_TYPE and the url has to be retrieved through 1815 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1816 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1817 * the "extra" field. A type of 1818 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1819 * a child node. If a phone number is found, the HitTestResult type is set 1820 * to PHONE_TYPE and the phone number is set in the "extra" field of 1821 * HitTestResult. If a map address is found, the HitTestResult type is set 1822 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1823 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1824 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1825 * HitTestResult type is set to UNKNOWN_TYPE. 1826 */ 1827 public HitTestResult getHitTestResult() { 1828 if (mNativeClass == 0) { 1829 return null; 1830 } 1831 1832 HitTestResult result = new HitTestResult(); 1833 if (nativeHasCursorNode()) { 1834 if (nativeCursorIsTextInput()) { 1835 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1836 } else { 1837 String text = nativeCursorText(); 1838 if (text != null) { 1839 if (text.startsWith(SCHEME_TEL)) { 1840 result.setType(HitTestResult.PHONE_TYPE); 1841 result.setExtra(text.substring(SCHEME_TEL.length())); 1842 } else if (text.startsWith(SCHEME_MAILTO)) { 1843 result.setType(HitTestResult.EMAIL_TYPE); 1844 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1845 } else if (text.startsWith(SCHEME_GEO)) { 1846 result.setType(HitTestResult.GEO_TYPE); 1847 result.setExtra(URLDecoder.decode(text 1848 .substring(SCHEME_GEO.length()))); 1849 } else if (nativeCursorIsAnchor()) { 1850 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1851 result.setExtra(text); 1852 } 1853 } 1854 } 1855 } 1856 int type = result.getType(); 1857 if (type == HitTestResult.UNKNOWN_TYPE 1858 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1859 // Now check to see if it is an image. 1860 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1861 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1862 String text = nativeImageURI(contentX, contentY); 1863 if (text != null) { 1864 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1865 HitTestResult.IMAGE_TYPE : 1866 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1867 result.setExtra(text); 1868 } 1869 } 1870 return result; 1871 } 1872 1873 // Called by JNI when the DOM has changed the focus. Clear the focus so 1874 // that new keys will go to the newly focused field 1875 private void domChangedFocus() { 1876 if (inEditingMode()) { 1877 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1878 } 1879 } 1880 /** 1881 * Request the href of an anchor element due to getFocusNodePath returning 1882 * "href." If hrefMsg is null, this method returns immediately and does not 1883 * dispatch hrefMsg to its target. 1884 * 1885 * @param hrefMsg This message will be dispatched with the result of the 1886 * request as the data member with "url" as key. The result can 1887 * be null. 1888 */ 1889 // FIXME: API change required to change the name of this function. We now 1890 // look at the cursor node, and not the focus node. Also, what is 1891 // getFocusNodePath? 1892 public void requestFocusNodeHref(Message hrefMsg) { 1893 if (hrefMsg == null || mNativeClass == 0) { 1894 return; 1895 } 1896 if (nativeCursorIsAnchor()) { 1897 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1898 nativeCursorFramePointer(), nativeCursorNodePointer(), 1899 hrefMsg); 1900 } 1901 } 1902 1903 /** 1904 * Request the url of the image last touched by the user. msg will be sent 1905 * to its target with a String representing the url as its object. 1906 * 1907 * @param msg This message will be dispatched with the result of the request 1908 * as the data member with "url" as key. The result can be null. 1909 */ 1910 public void requestImageRef(Message msg) { 1911 if (0 == mNativeClass) return; // client isn't initialized 1912 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1913 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1914 String ref = nativeImageURI(contentX, contentY); 1915 Bundle data = msg.getData(); 1916 data.putString("url", ref); 1917 msg.setData(data); 1918 msg.sendToTarget(); 1919 } 1920 1921 private static int pinLoc(int x, int viewMax, int docMax) { 1922// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1923 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1924 // pin the short document to the top/left of the screen 1925 x = 0; 1926// Log.d(LOGTAG, "--- center " + x); 1927 } else if (x < 0) { 1928 x = 0; 1929// Log.d(LOGTAG, "--- zero"); 1930 } else if (x + viewMax > docMax) { 1931 x = docMax - viewMax; 1932// Log.d(LOGTAG, "--- pin " + x); 1933 } 1934 return x; 1935 } 1936 1937 // Expects x in view coordinates 1938 private int pinLocX(int x) { 1939 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1940 } 1941 1942 // Expects y in view coordinates 1943 private int pinLocY(int y) { 1944 return pinLoc(y, getViewHeightWithTitle(), 1945 computeVerticalScrollRange() + getTitleHeight()); 1946 } 1947 1948 /** 1949 * A title bar which is embedded in this WebView, and scrolls along with it 1950 * vertically, but not horizontally. 1951 */ 1952 private View mTitleBar; 1953 1954 /** 1955 * Since we draw the title bar ourselves, we removed the shadow from the 1956 * browser's activity. We do want a shadow at the bottom of the title bar, 1957 * or at the top of the screen if the title bar is not visible. This 1958 * drawable serves that purpose. 1959 */ 1960 private Drawable mTitleShadow; 1961 1962 /** 1963 * Add or remove a title bar to be embedded into the WebView, and scroll 1964 * along with it vertically, while remaining in view horizontally. Pass 1965 * null to remove the title bar from the WebView, and return to drawing 1966 * the WebView normally without translating to account for the title bar. 1967 * @hide 1968 */ 1969 public void setEmbeddedTitleBar(View v) { 1970 if (mTitleBar == v) return; 1971 if (mTitleBar != null) { 1972 removeView(mTitleBar); 1973 } 1974 if (null != v) { 1975 addView(v, new AbsoluteLayout.LayoutParams( 1976 ViewGroup.LayoutParams.MATCH_PARENT, 1977 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1978 if (mTitleShadow == null) { 1979 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1980 com.android.internal.R.drawable.title_bar_shadow); 1981 } 1982 } 1983 mTitleBar = v; 1984 } 1985 1986 /** 1987 * Given a distance in view space, convert it to content space. Note: this 1988 * does not reflect translation, just scaling, so this should not be called 1989 * with coordinates, but should be called for dimensions like width or 1990 * height. 1991 */ 1992 private int viewToContentDimension(int d) { 1993 return Math.round(d * mInvActualScale); 1994 } 1995 1996 /** 1997 * Given an x coordinate in view space, convert it to content space. Also 1998 * may be used for absolute heights (such as for the WebTextView's 1999 * textSize, which is unaffected by the height of the title bar). 2000 */ 2001 /*package*/ int viewToContentX(int x) { 2002 return viewToContentDimension(x); 2003 } 2004 2005 /** 2006 * Given a y coordinate in view space, convert it to content space. 2007 * Takes into account the height of the title bar if there is one 2008 * embedded into the WebView. 2009 */ 2010 /*package*/ int viewToContentY(int y) { 2011 return viewToContentDimension(y - getTitleHeight()); 2012 } 2013 2014 /** 2015 * Given a x coordinate in view space, convert it to content space. 2016 * Returns the result as a float. 2017 */ 2018 private float viewToContentXf(int x) { 2019 return x * mInvActualScale; 2020 } 2021 2022 /** 2023 * Given a y coordinate in view space, convert it to content space. 2024 * Takes into account the height of the title bar if there is one 2025 * embedded into the WebView. Returns the result as a float. 2026 */ 2027 private float viewToContentYf(int y) { 2028 return (y - getTitleHeight()) * mInvActualScale; 2029 } 2030 2031 /** 2032 * Given a distance in content space, convert it to view space. Note: this 2033 * does not reflect translation, just scaling, so this should not be called 2034 * with coordinates, but should be called for dimensions like width or 2035 * height. 2036 */ 2037 /*package*/ int contentToViewDimension(int d) { 2038 return Math.round(d * mActualScale); 2039 } 2040 2041 /** 2042 * Given an x coordinate in content space, convert it to view 2043 * space. 2044 */ 2045 /*package*/ int contentToViewX(int x) { 2046 return contentToViewDimension(x); 2047 } 2048 2049 /** 2050 * Given a y coordinate in content space, convert it to view 2051 * space. Takes into account the height of the title bar. 2052 */ 2053 /*package*/ int contentToViewY(int y) { 2054 return contentToViewDimension(y) + getTitleHeight(); 2055 } 2056 2057 private Rect contentToViewRect(Rect x) { 2058 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2059 contentToViewX(x.right), contentToViewY(x.bottom)); 2060 } 2061 2062 /* To invalidate a rectangle in content coordinates, we need to transform 2063 the rect into view coordinates, so we can then call invalidate(...). 2064 2065 Normally, we would just call contentToView[XY](...), which eventually 2066 calls Math.round(coordinate * mActualScale). However, for invalidates, 2067 we need to account for the slop that occurs with antialiasing. To 2068 address that, we are a little more liberal in the size of the rect that 2069 we invalidate. 2070 2071 This liberal calculation calls floor() for the top/left, and ceil() for 2072 the bottom/right coordinates. This catches the possible extra pixels of 2073 antialiasing that we might have missed with just round(). 2074 */ 2075 2076 // Called by JNI to invalidate the View, given rectangle coordinates in 2077 // content space 2078 private void viewInvalidate(int l, int t, int r, int b) { 2079 final float scale = mActualScale; 2080 final int dy = getTitleHeight(); 2081 invalidate((int)Math.floor(l * scale), 2082 (int)Math.floor(t * scale) + dy, 2083 (int)Math.ceil(r * scale), 2084 (int)Math.ceil(b * scale) + dy); 2085 } 2086 2087 // Called by JNI to invalidate the View after a delay, given rectangle 2088 // coordinates in content space 2089 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2090 final float scale = mActualScale; 2091 final int dy = getTitleHeight(); 2092 postInvalidateDelayed(delay, 2093 (int)Math.floor(l * scale), 2094 (int)Math.floor(t * scale) + dy, 2095 (int)Math.ceil(r * scale), 2096 (int)Math.ceil(b * scale) + dy); 2097 } 2098 2099 private void invalidateContentRect(Rect r) { 2100 viewInvalidate(r.left, r.top, r.right, r.bottom); 2101 } 2102 2103 // stop the scroll animation, and don't let a subsequent fling add 2104 // to the existing velocity 2105 private void abortAnimation() { 2106 mScroller.abortAnimation(); 2107 mLastVelocity = 0; 2108 } 2109 2110 /* call from webcoreview.draw(), so we're still executing in the UI thread 2111 */ 2112 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2113 2114 // premature data from webkit, ignore 2115 if ((w | h) == 0) { 2116 return; 2117 } 2118 2119 // don't abort a scroll animation if we didn't change anything 2120 if (mContentWidth != w || mContentHeight != h) { 2121 // record new dimensions 2122 mContentWidth = w; 2123 mContentHeight = h; 2124 // If history Picture is drawn, don't update scroll. They will be 2125 // updated when we get out of that mode. 2126 if (!mDrawHistory) { 2127 // repin our scroll, taking into account the new content size 2128 int oldX = mScrollX; 2129 int oldY = mScrollY; 2130 mScrollX = pinLocX(mScrollX); 2131 mScrollY = pinLocY(mScrollY); 2132 if (oldX != mScrollX || oldY != mScrollY) { 2133 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2134 } 2135 if (!mScroller.isFinished()) { 2136 // We are in the middle of a scroll. Repin the final scroll 2137 // position. 2138 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2139 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2140 } 2141 } 2142 } 2143 contentSizeChanged(updateLayout); 2144 } 2145 2146 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2147 boolean force) { 2148 if (scale < mZoomManager.mMinZoomScale) { 2149 scale = mZoomManager.mMinZoomScale; 2150 // set mInZoomOverview for non mobile sites 2151 if (scale < mDefaultScale) { 2152 mZoomManager.mInZoomOverview = true; 2153 } 2154 } else if (scale > mZoomManager.mMaxZoomScale) { 2155 scale = mZoomManager.mMaxZoomScale; 2156 } 2157 if (updateTextWrapScale) { 2158 mTextWrapScale = scale; 2159 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2160 mLastHeightSent = 0; 2161 } 2162 if (scale != mActualScale || force) { 2163 if (mDrawHistory) { 2164 // If history Picture is drawn, don't update scroll. They will 2165 // be updated when we get out of that mode. 2166 if (scale != mActualScale && !mPreviewZoomOnly) { 2167 mCallbackProxy.onScaleChanged(mActualScale, scale); 2168 } 2169 mActualScale = scale; 2170 mInvActualScale = 1 / scale; 2171 sendViewSizeZoom(); 2172 } else { 2173 // update our scroll so we don't appear to jump 2174 // i.e. keep the center of the doc in the center of the view 2175 2176 int oldX = mScrollX; 2177 int oldY = mScrollY; 2178 float ratio = scale * mInvActualScale; // old inverse 2179 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2180 float sy = ratio * oldY + (ratio - 1) 2181 * (mZoomCenterY - getTitleHeight()); 2182 2183 // now update our new scale and inverse 2184 if (scale != mActualScale && !mPreviewZoomOnly) { 2185 mCallbackProxy.onScaleChanged(mActualScale, scale); 2186 } 2187 mActualScale = scale; 2188 mInvActualScale = 1 / scale; 2189 2190 // Scale all the child views 2191 mViewManager.scaleAll(); 2192 2193 // as we don't have animation for scaling, don't do animation 2194 // for scrolling, as it causes weird intermediate state 2195 // pinScrollTo(Math.round(sx), Math.round(sy)); 2196 mScrollX = pinLocX(Math.round(sx)); 2197 mScrollY = pinLocY(Math.round(sy)); 2198 2199 // update webkit 2200 if (oldX != mScrollX || oldY != mScrollY) { 2201 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2202 } else { 2203 // the scroll position is adjusted at the beginning of the 2204 // zoom animation. But we want to update the WebKit at the 2205 // end of the zoom animation. See comments in onScaleEnd(). 2206 sendOurVisibleRect(); 2207 } 2208 sendViewSizeZoom(); 2209 } 2210 } 2211 } 2212 2213 // Used to avoid sending many visible rect messages. 2214 private Rect mLastVisibleRectSent; 2215 private Rect mLastGlobalRect; 2216 2217 private Rect sendOurVisibleRect() { 2218 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2219 2220 Rect rect = new Rect(); 2221 calcOurContentVisibleRect(rect); 2222 // Rect.equals() checks for null input. 2223 if (!rect.equals(mLastVisibleRectSent)) { 2224 Point pos = new Point(rect.left, rect.top); 2225 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2226 nativeMoveGeneration(), 0, pos); 2227 mLastVisibleRectSent = rect; 2228 } 2229 Rect globalRect = new Rect(); 2230 if (getGlobalVisibleRect(globalRect) 2231 && !globalRect.equals(mLastGlobalRect)) { 2232 if (DebugFlags.WEB_VIEW) { 2233 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2234 + globalRect.top + ",r=" + globalRect.right + ",b=" 2235 + globalRect.bottom); 2236 } 2237 // TODO: the global offset is only used by windowRect() 2238 // in ChromeClientAndroid ; other clients such as touch 2239 // and mouse events could return view + screen relative points. 2240 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2241 mLastGlobalRect = globalRect; 2242 } 2243 return rect; 2244 } 2245 2246 // Sets r to be the visible rectangle of our webview in view coordinates 2247 private void calcOurVisibleRect(Rect r) { 2248 Point p = new Point(); 2249 getGlobalVisibleRect(r, p); 2250 r.offset(-p.x, -p.y); 2251 } 2252 2253 // Sets r to be our visible rectangle in content coordinates 2254 private void calcOurContentVisibleRect(Rect r) { 2255 calcOurVisibleRect(r); 2256 // pin the rect to the bounds of the content 2257 r.left = Math.max(viewToContentX(r.left), 0); 2258 // viewToContentY will remove the total height of the title bar. Add 2259 // the visible height back in to account for the fact that if the title 2260 // bar is partially visible, the part of the visible rect which is 2261 // displaying our content is displaced by that amount. 2262 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2263 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2264 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2265 } 2266 2267 // Sets r to be our visible rectangle in content coordinates. We use this 2268 // method on the native side to compute the position of the fixed layers. 2269 // Uses floating coordinates (necessary to correctly place elements when 2270 // the scale factor is not 1) 2271 private void calcOurContentVisibleRectF(RectF r) { 2272 Rect ri = new Rect(0,0,0,0); 2273 calcOurVisibleRect(ri); 2274 // pin the rect to the bounds of the content 2275 r.left = Math.max(viewToContentXf(ri.left), 0.0f); 2276 // viewToContentY will remove the total height of the title bar. Add 2277 // the visible height back in to account for the fact that if the title 2278 // bar is partially visible, the part of the visible rect which is 2279 // displaying our content is displaced by that amount. 2280 r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f); 2281 r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth); 2282 r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight); 2283 } 2284 2285 static class ViewSizeData { 2286 int mWidth; 2287 int mHeight; 2288 int mTextWrapWidth; 2289 int mAnchorX; 2290 int mAnchorY; 2291 float mScale; 2292 boolean mIgnoreHeight; 2293 } 2294 2295 /** 2296 * Compute unzoomed width and height, and if they differ from the last 2297 * values we sent, send them to webkit (to be used has new viewport) 2298 * 2299 * @return true if new values were sent 2300 */ 2301 private boolean sendViewSizeZoom() { 2302 if (mPreviewZoomOnly) return false; 2303 2304 int viewWidth = getViewWidth(); 2305 int newWidth = Math.round(viewWidth * mInvActualScale); 2306 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2307 /* 2308 * Because the native side may have already done a layout before the 2309 * View system was able to measure us, we have to send a height of 0 to 2310 * remove excess whitespace when we grow our width. This will trigger a 2311 * layout and a change in content size. This content size change will 2312 * mean that contentSizeChanged will either call this method directly or 2313 * indirectly from onSizeChanged. 2314 */ 2315 if (newWidth > mLastWidthSent && mWrapContent) { 2316 newHeight = 0; 2317 } 2318 // Avoid sending another message if the dimensions have not changed. 2319 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2320 ViewSizeData data = new ViewSizeData(); 2321 data.mWidth = newWidth; 2322 data.mHeight = newHeight; 2323 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2324 data.mScale = mActualScale; 2325 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2326 data.mAnchorX = mAnchorX; 2327 data.mAnchorY = mAnchorY; 2328 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2329 mLastWidthSent = newWidth; 2330 mLastHeightSent = newHeight; 2331 mAnchorX = mAnchorY = 0; 2332 return true; 2333 } 2334 return false; 2335 } 2336 2337 @Override 2338 protected int computeHorizontalScrollRange() { 2339 if (mDrawHistory) { 2340 return mHistoryWidth; 2341 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2342 && (mActualScale - mZoomManager.mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2343 // only honor the scrollbar mode when it is at minimum zoom level 2344 return computeHorizontalScrollExtent(); 2345 } else { 2346 // to avoid rounding error caused unnecessary scrollbar, use floor 2347 return (int) Math.floor(mContentWidth * mActualScale); 2348 } 2349 } 2350 2351 @Override 2352 protected int computeVerticalScrollRange() { 2353 if (mDrawHistory) { 2354 return mHistoryHeight; 2355 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2356 && (mActualScale - mZoomManager.mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2357 // only honor the scrollbar mode when it is at minimum zoom level 2358 return computeVerticalScrollExtent(); 2359 } else { 2360 // to avoid rounding error caused unnecessary scrollbar, use floor 2361 return (int) Math.floor(mContentHeight * mActualScale); 2362 } 2363 } 2364 2365 @Override 2366 protected int computeVerticalScrollOffset() { 2367 return Math.max(mScrollY - getTitleHeight(), 0); 2368 } 2369 2370 @Override 2371 protected int computeVerticalScrollExtent() { 2372 return getViewHeight(); 2373 } 2374 2375 /** @hide */ 2376 @Override 2377 protected void onDrawVerticalScrollBar(Canvas canvas, 2378 Drawable scrollBar, 2379 int l, int t, int r, int b) { 2380 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2381 scrollBar.draw(canvas); 2382 } 2383 2384 /** 2385 * Get the url for the current page. This is not always the same as the url 2386 * passed to WebViewClient.onPageStarted because although the load for 2387 * that url has begun, the current page may not have changed. 2388 * @return The url for the current page. 2389 */ 2390 public String getUrl() { 2391 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2392 return h != null ? h.getUrl() : null; 2393 } 2394 2395 /** 2396 * Get the original url for the current page. This is not always the same 2397 * as the url passed to WebViewClient.onPageStarted because although the 2398 * load for that url has begun, the current page may not have changed. 2399 * Also, there may have been redirects resulting in a different url to that 2400 * originally requested. 2401 * @return The url that was originally requested for the current page. 2402 */ 2403 public String getOriginalUrl() { 2404 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2405 return h != null ? h.getOriginalUrl() : null; 2406 } 2407 2408 /** 2409 * Get the title for the current page. This is the title of the current page 2410 * until WebViewClient.onReceivedTitle is called. 2411 * @return The title for the current page. 2412 */ 2413 public String getTitle() { 2414 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2415 return h != null ? h.getTitle() : null; 2416 } 2417 2418 /** 2419 * Get the favicon for the current page. This is the favicon of the current 2420 * page until WebViewClient.onReceivedIcon is called. 2421 * @return The favicon for the current page. 2422 */ 2423 public Bitmap getFavicon() { 2424 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2425 return h != null ? h.getFavicon() : null; 2426 } 2427 2428 /** 2429 * Get the touch icon url for the apple-touch-icon <link> element. 2430 * @hide 2431 */ 2432 public String getTouchIconUrl() { 2433 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2434 return h != null ? h.getTouchIconUrl() : null; 2435 } 2436 2437 /** 2438 * Get the progress for the current page. 2439 * @return The progress for the current page between 0 and 100. 2440 */ 2441 public int getProgress() { 2442 return mCallbackProxy.getProgress(); 2443 } 2444 2445 /** 2446 * @return the height of the HTML content. 2447 */ 2448 public int getContentHeight() { 2449 return mContentHeight; 2450 } 2451 2452 /** 2453 * @return the width of the HTML content. 2454 * @hide 2455 */ 2456 public int getContentWidth() { 2457 return mContentWidth; 2458 } 2459 2460 /** 2461 * Pause all layout, parsing, and javascript timers for all webviews. This 2462 * is a global requests, not restricted to just this webview. This can be 2463 * useful if the application has been paused. 2464 */ 2465 public void pauseTimers() { 2466 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2467 } 2468 2469 /** 2470 * Resume all layout, parsing, and javascript timers for all webviews. 2471 * This will resume dispatching all timers. 2472 */ 2473 public void resumeTimers() { 2474 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2475 } 2476 2477 /** 2478 * Call this to pause any extra processing associated with this view and 2479 * its associated DOM/plugins/javascript/etc. For example, if the view is 2480 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2481 * network traffic. When the view is again "active", call onResume(). 2482 * 2483 * Note that this differs from pauseTimers(), which affects all views/DOMs 2484 * @hide 2485 */ 2486 public void onPause() { 2487 if (!mIsPaused) { 2488 mIsPaused = true; 2489 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2490 } 2491 } 2492 2493 /** 2494 * Call this to balanace a previous call to onPause() 2495 * @hide 2496 */ 2497 public void onResume() { 2498 if (mIsPaused) { 2499 mIsPaused = false; 2500 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2501 } 2502 } 2503 2504 /** 2505 * Returns true if the view is paused, meaning onPause() was called. Calling 2506 * onResume() sets the paused state back to false. 2507 * @hide 2508 */ 2509 public boolean isPaused() { 2510 return mIsPaused; 2511 } 2512 2513 /** 2514 * Call this to inform the view that memory is low so that it can 2515 * free any available memory. 2516 */ 2517 public void freeMemory() { 2518 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2519 } 2520 2521 /** 2522 * Clear the resource cache. Note that the cache is per-application, so 2523 * this will clear the cache for all WebViews used. 2524 * 2525 * @param includeDiskFiles If false, only the RAM cache is cleared. 2526 */ 2527 public void clearCache(boolean includeDiskFiles) { 2528 // Note: this really needs to be a static method as it clears cache for all 2529 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2530 // we can't make this static. 2531 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2532 includeDiskFiles ? 1 : 0, 0); 2533 } 2534 2535 /** 2536 * Make sure that clearing the form data removes the adapter from the 2537 * currently focused textfield if there is one. 2538 */ 2539 public void clearFormData() { 2540 if (inEditingMode()) { 2541 AutoCompleteAdapter adapter = null; 2542 mWebTextView.setAdapterCustom(adapter); 2543 } 2544 } 2545 2546 /** 2547 * Tell the WebView to clear its internal back/forward list. 2548 */ 2549 public void clearHistory() { 2550 mCallbackProxy.getBackForwardList().setClearPending(); 2551 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2552 } 2553 2554 /** 2555 * Clear the SSL preferences table stored in response to proceeding with SSL 2556 * certificate errors. 2557 */ 2558 public void clearSslPreferences() { 2559 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2560 } 2561 2562 /** 2563 * Return the WebBackForwardList for this WebView. This contains the 2564 * back/forward list for use in querying each item in the history stack. 2565 * This is a copy of the private WebBackForwardList so it contains only a 2566 * snapshot of the current state. Multiple calls to this method may return 2567 * different objects. The object returned from this method will not be 2568 * updated to reflect any new state. 2569 */ 2570 public WebBackForwardList copyBackForwardList() { 2571 return mCallbackProxy.getBackForwardList().clone(); 2572 } 2573 2574 /* 2575 * Highlight and scroll to the next occurance of String in findAll. 2576 * Wraps the page infinitely, and scrolls. Must be called after 2577 * calling findAll. 2578 * 2579 * @param forward Direction to search. 2580 */ 2581 public void findNext(boolean forward) { 2582 if (0 == mNativeClass) return; // client isn't initialized 2583 nativeFindNext(forward); 2584 } 2585 2586 /* 2587 * Find all instances of find on the page and highlight them. 2588 * @param find String to find. 2589 * @return int The number of occurances of the String "find" 2590 * that were found. 2591 */ 2592 public int findAll(String find) { 2593 if (0 == mNativeClass) return 0; // client isn't initialized 2594 int result = find != null ? nativeFindAll(find.toLowerCase(), 2595 find.toUpperCase()) : 0; 2596 invalidate(); 2597 mLastFind = find; 2598 return result; 2599 } 2600 2601 /** 2602 * @hide 2603 */ 2604 public void setFindIsUp(boolean isUp) { 2605 mFindIsUp = isUp; 2606 if (0 == mNativeClass) return; // client isn't initialized 2607 nativeSetFindIsUp(isUp); 2608 } 2609 2610 /** 2611 * @hide 2612 */ 2613 public int findIndex() { 2614 if (0 == mNativeClass) return -1; 2615 return nativeFindIndex(); 2616 } 2617 2618 /** 2619 * @hide 2620 */ 2621 public boolean getFindIsUp() { return mFindIsUp; } 2622 2623 // Used to know whether the find dialog is open. Affects whether 2624 // or not we draw the highlights for matches. 2625 private boolean mFindIsUp; 2626 2627 // Keep track of the last string sent, so we can search again after an 2628 // orientation change or the dismissal of the soft keyboard. 2629 private String mLastFind; 2630 2631 /** 2632 * Return the first substring consisting of the address of a physical 2633 * location. Currently, only addresses in the United States are detected, 2634 * and consist of: 2635 * - a house number 2636 * - a street name 2637 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2638 * - a city name 2639 * - a state or territory, either spelled out or two-letter abbr. 2640 * - an optional 5 digit or 9 digit zip code. 2641 * 2642 * All names must be correctly capitalized, and the zip code, if present, 2643 * must be valid for the state. The street type must be a standard USPS 2644 * spelling or abbreviation. The state or territory must also be spelled 2645 * or abbreviated using USPS standards. The house number may not exceed 2646 * five digits. 2647 * @param addr The string to search for addresses. 2648 * 2649 * @return the address, or if no address is found, return null. 2650 */ 2651 public static String findAddress(String addr) { 2652 return findAddress(addr, false); 2653 } 2654 2655 /** 2656 * @hide 2657 * Return the first substring consisting of the address of a physical 2658 * location. Currently, only addresses in the United States are detected, 2659 * and consist of: 2660 * - a house number 2661 * - a street name 2662 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2663 * - a city name 2664 * - a state or territory, either spelled out or two-letter abbr. 2665 * - an optional 5 digit or 9 digit zip code. 2666 * 2667 * Names are optionally capitalized, and the zip code, if present, 2668 * must be valid for the state. The street type must be a standard USPS 2669 * spelling or abbreviation. The state or territory must also be spelled 2670 * or abbreviated using USPS standards. The house number may not exceed 2671 * five digits. 2672 * @param addr The string to search for addresses. 2673 * @param caseInsensitive addr Set to true to make search ignore case. 2674 * 2675 * @return the address, or if no address is found, return null. 2676 */ 2677 public static String findAddress(String addr, boolean caseInsensitive) { 2678 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2679 } 2680 2681 /* 2682 * Clear the highlighting surrounding text matches created by findAll. 2683 */ 2684 public void clearMatches() { 2685 mLastFind = ""; 2686 if (mNativeClass == 0) 2687 return; 2688 nativeSetFindIsEmpty(); 2689 invalidate(); 2690 } 2691 2692 /** 2693 * @hide 2694 */ 2695 public void notifyFindDialogDismissed() { 2696 if (mWebViewCore == null) { 2697 return; 2698 } 2699 clearMatches(); 2700 setFindIsUp(false); 2701 // Now that the dialog has been removed, ensure that we scroll to a 2702 // location that is not beyond the end of the page. 2703 pinScrollTo(mScrollX, mScrollY, false, 0); 2704 invalidate(); 2705 } 2706 2707 /** 2708 * Query the document to see if it contains any image references. The 2709 * message object will be dispatched with arg1 being set to 1 if images 2710 * were found and 0 if the document does not reference any images. 2711 * @param response The message that will be dispatched with the result. 2712 */ 2713 public void documentHasImages(Message response) { 2714 if (response == null) { 2715 return; 2716 } 2717 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2718 } 2719 2720 @Override 2721 public void computeScroll() { 2722 if (mScroller.computeScrollOffset()) { 2723 int oldX = mScrollX; 2724 int oldY = mScrollY; 2725 mScrollX = mScroller.getCurrX(); 2726 mScrollY = mScroller.getCurrY(); 2727 postInvalidate(); // So we draw again 2728 if (oldX != mScrollX || oldY != mScrollY) { 2729 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2730 } else { 2731 abortAnimation(); 2732 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 2733 WebViewCore.resumePriority(); 2734 WebViewCore.resumeUpdatePicture(mWebViewCore); 2735 } 2736 } else { 2737 super.computeScroll(); 2738 } 2739 } 2740 2741 private static int computeDuration(int dx, int dy) { 2742 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2743 int duration = distance * 1000 / STD_SPEED; 2744 return Math.min(duration, MAX_DURATION); 2745 } 2746 2747 // helper to pin the scrollBy parameters (already in view coordinates) 2748 // returns true if the scroll was changed 2749 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2750 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2751 } 2752 // helper to pin the scrollTo parameters (already in view coordinates) 2753 // returns true if the scroll was changed 2754 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2755 x = pinLocX(x); 2756 y = pinLocY(y); 2757 int dx = x - mScrollX; 2758 int dy = y - mScrollY; 2759 2760 if ((dx | dy) == 0) { 2761 return false; 2762 } 2763 if (animate) { 2764 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2765 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2766 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2767 awakenScrollBars(mScroller.getDuration()); 2768 invalidate(); 2769 } else { 2770 abortAnimation(); // just in case 2771 scrollTo(x, y); 2772 } 2773 return true; 2774 } 2775 2776 // Scale from content to view coordinates, and pin. 2777 // Also called by jni webview.cpp 2778 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2779 if (mDrawHistory) { 2780 // disallow WebView to change the scroll position as History Picture 2781 // is used in the view system. 2782 // TODO: as we switchOutDrawHistory when trackball or navigation 2783 // keys are hit, this should be safe. Right? 2784 return false; 2785 } 2786 cx = contentToViewDimension(cx); 2787 cy = contentToViewDimension(cy); 2788 if (mHeightCanMeasure) { 2789 // move our visible rect according to scroll request 2790 if (cy != 0) { 2791 Rect tempRect = new Rect(); 2792 calcOurVisibleRect(tempRect); 2793 tempRect.offset(cx, cy); 2794 requestRectangleOnScreen(tempRect); 2795 } 2796 // FIXME: We scroll horizontally no matter what because currently 2797 // ScrollView and ListView will not scroll horizontally. 2798 // FIXME: Why do we only scroll horizontally if there is no 2799 // vertical scroll? 2800// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2801 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2802 } else { 2803 return pinScrollBy(cx, cy, animate, 0); 2804 } 2805 } 2806 2807 /** 2808 * Called by CallbackProxy when the page finishes loading. 2809 * @param url The URL of the page which has finished loading. 2810 */ 2811 /* package */ void onPageFinished(String url) { 2812 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2813 // If the user is now on a different page, or has scrolled the page 2814 // past the point where the title bar is offscreen, ignore the 2815 // scroll request. 2816 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2817 && mScrollX == 0 && mScrollY == 0) { 2818 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2819 SLIDE_TITLE_DURATION); 2820 } 2821 mPageThatNeedsToSlideTitleBarOffScreen = null; 2822 } 2823 2824 injectAccessibilityForUrl(url); 2825 } 2826 2827 /** 2828 * This method injects accessibility in the loaded document if accessibility 2829 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 2830 * If no URL specific script is found or JavaScript is disabled we fallback to 2831 * the default {@link AccessibilityInjector} implementation. 2832 * 2833 * @param url The URL loaded by this {@link WebView}. 2834 */ 2835 private void injectAccessibilityForUrl(String url) { 2836 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 2837 if (getSettings().getJavaScriptEnabled()) { 2838 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 2839 } else if (mAccessibilityInjector == null) { 2840 mAccessibilityInjector = new AccessibilityInjector(this); 2841 } 2842 } else { 2843 // it is possible that accessibility was turned off between reloads 2844 mAccessibilityInjector = null; 2845 } 2846 } 2847 2848 /** 2849 * The URL of a page that sent a message to scroll the title bar off screen. 2850 * 2851 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2852 * title bar off the screen. Sometimes, the scroll position is set before 2853 * the page finishes loading. Rather than scrolling while the page is still 2854 * loading, keep track of the URL and new scroll position so we can perform 2855 * the scroll once the page finishes loading. 2856 */ 2857 private String mPageThatNeedsToSlideTitleBarOffScreen; 2858 2859 /** 2860 * The destination Y scroll position to be used when the page finishes 2861 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2862 */ 2863 private int mYDistanceToSlideTitleOffScreen; 2864 2865 // scale from content to view coordinates, and pin 2866 // return true if pin caused the final x/y different than the request cx/cy, 2867 // and a future scroll may reach the request cx/cy after our size has 2868 // changed 2869 // return false if the view scroll to the exact position as it is requested, 2870 // where negative numbers are taken to mean 0 2871 private boolean setContentScrollTo(int cx, int cy) { 2872 if (mDrawHistory) { 2873 // disallow WebView to change the scroll position as History Picture 2874 // is used in the view system. 2875 // One known case where this is called is that WebCore tries to 2876 // restore the scroll position. As history Picture already uses the 2877 // saved scroll position, it is ok to skip this. 2878 return false; 2879 } 2880 int vx; 2881 int vy; 2882 if ((cx | cy) == 0) { 2883 // If the page is being scrolled to (0,0), do not add in the title 2884 // bar's height, and simply scroll to (0,0). (The only other work 2885 // in contentToView_ is to multiply, so this would not change 0.) 2886 vx = 0; 2887 vy = 0; 2888 } else { 2889 vx = contentToViewX(cx); 2890 vy = contentToViewY(cy); 2891 } 2892// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2893// vx + " " + vy + "]"); 2894 // Some mobile sites attempt to scroll the title bar off the page by 2895 // scrolling to (0,1). If we are at the top left corner of the 2896 // page, assume this is an attempt to scroll off the title bar, and 2897 // animate the title bar off screen slowly enough that the user can see 2898 // it. 2899 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2900 && mTitleBar != null) { 2901 // FIXME: 100 should be defined somewhere as our max progress. 2902 if (getProgress() < 100) { 2903 // Wait to scroll the title bar off screen until the page has 2904 // finished loading. Keep track of the URL and the destination 2905 // Y position 2906 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2907 mYDistanceToSlideTitleOffScreen = vy; 2908 } else { 2909 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2910 } 2911 // Since we are animating, we have not yet reached the desired 2912 // scroll position. Do not return true to request another attempt 2913 return false; 2914 } 2915 pinScrollTo(vx, vy, false, 0); 2916 // If the request was to scroll to a negative coordinate, treat it as if 2917 // it was a request to scroll to 0 2918 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2919 return true; 2920 } else { 2921 return false; 2922 } 2923 } 2924 2925 // scale from content to view coordinates, and pin 2926 private void spawnContentScrollTo(int cx, int cy) { 2927 if (mDrawHistory) { 2928 // disallow WebView to change the scroll position as History Picture 2929 // is used in the view system. 2930 return; 2931 } 2932 int vx = contentToViewX(cx); 2933 int vy = contentToViewY(cy); 2934 pinScrollTo(vx, vy, true, 0); 2935 } 2936 2937 /** 2938 * These are from webkit, and are in content coordinate system (unzoomed) 2939 */ 2940 private void contentSizeChanged(boolean updateLayout) { 2941 // suppress 0,0 since we usually see real dimensions soon after 2942 // this avoids drawing the prev content in a funny place. If we find a 2943 // way to consolidate these notifications, this check may become 2944 // obsolete 2945 if ((mContentWidth | mContentHeight) == 0) { 2946 return; 2947 } 2948 2949 if (mHeightCanMeasure) { 2950 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2951 || updateLayout) { 2952 requestLayout(); 2953 } 2954 } else if (mWidthCanMeasure) { 2955 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2956 || updateLayout) { 2957 requestLayout(); 2958 } 2959 } else { 2960 // If we don't request a layout, try to send our view size to the 2961 // native side to ensure that WebCore has the correct dimensions. 2962 sendViewSizeZoom(); 2963 } 2964 } 2965 2966 /** 2967 * Set the WebViewClient that will receive various notifications and 2968 * requests. This will replace the current handler. 2969 * @param client An implementation of WebViewClient. 2970 */ 2971 public void setWebViewClient(WebViewClient client) { 2972 mCallbackProxy.setWebViewClient(client); 2973 } 2974 2975 /** 2976 * Gets the WebViewClient 2977 * @return the current WebViewClient instance. 2978 * 2979 *@hide pending API council approval. 2980 */ 2981 public WebViewClient getWebViewClient() { 2982 return mCallbackProxy.getWebViewClient(); 2983 } 2984 2985 /** 2986 * Register the interface to be used when content can not be handled by 2987 * the rendering engine, and should be downloaded instead. This will replace 2988 * the current handler. 2989 * @param listener An implementation of DownloadListener. 2990 */ 2991 public void setDownloadListener(DownloadListener listener) { 2992 mCallbackProxy.setDownloadListener(listener); 2993 } 2994 2995 /** 2996 * Set the chrome handler. This is an implementation of WebChromeClient for 2997 * use in handling Javascript dialogs, favicons, titles, and the progress. 2998 * This will replace the current handler. 2999 * @param client An implementation of WebChromeClient. 3000 */ 3001 public void setWebChromeClient(WebChromeClient client) { 3002 mCallbackProxy.setWebChromeClient(client); 3003 } 3004 3005 /** 3006 * Gets the chrome handler. 3007 * @return the current WebChromeClient instance. 3008 * 3009 * @hide API council approval. 3010 */ 3011 public WebChromeClient getWebChromeClient() { 3012 return mCallbackProxy.getWebChromeClient(); 3013 } 3014 3015 /** 3016 * Set the back/forward list client. This is an implementation of 3017 * WebBackForwardListClient for handling new items and changes in the 3018 * history index. 3019 * @param client An implementation of WebBackForwardListClient. 3020 * {@hide} 3021 */ 3022 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3023 mCallbackProxy.setWebBackForwardListClient(client); 3024 } 3025 3026 /** 3027 * Gets the WebBackForwardListClient. 3028 * {@hide} 3029 */ 3030 public WebBackForwardListClient getWebBackForwardListClient() { 3031 return mCallbackProxy.getWebBackForwardListClient(); 3032 } 3033 3034 /** 3035 * Set the Picture listener. This is an interface used to receive 3036 * notifications of a new Picture. 3037 * @param listener An implementation of WebView.PictureListener. 3038 */ 3039 public void setPictureListener(PictureListener listener) { 3040 mPictureListener = listener; 3041 } 3042 3043 /** 3044 * {@hide} 3045 */ 3046 /* FIXME: Debug only! Remove for SDK! */ 3047 public void externalRepresentation(Message callback) { 3048 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3049 } 3050 3051 /** 3052 * {@hide} 3053 */ 3054 /* FIXME: Debug only! Remove for SDK! */ 3055 public void documentAsText(Message callback) { 3056 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3057 } 3058 3059 /** 3060 * Use this function to bind an object to Javascript so that the 3061 * methods can be accessed from Javascript. 3062 * <p><strong>IMPORTANT:</strong> 3063 * <ul> 3064 * <li> Using addJavascriptInterface() allows JavaScript to control your 3065 * application. This can be a very useful feature or a dangerous security 3066 * issue. When the HTML in the WebView is untrustworthy (for example, part 3067 * or all of the HTML is provided by some person or process), then an 3068 * attacker could inject HTML that will execute your code and possibly any 3069 * code of the attacker's choosing.<br> 3070 * Do not use addJavascriptInterface() unless all of the HTML in this 3071 * WebView was written by you.</li> 3072 * <li> The Java object that is bound runs in another thread and not in 3073 * the thread that it was constructed in.</li> 3074 * </ul></p> 3075 * @param obj The class instance to bind to Javascript 3076 * @param interfaceName The name to used to expose the class in Javascript 3077 */ 3078 public void addJavascriptInterface(Object obj, String interfaceName) { 3079 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3080 arg.mObject = obj; 3081 arg.mInterfaceName = interfaceName; 3082 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3083 } 3084 3085 /** 3086 * Return the WebSettings object used to control the settings for this 3087 * WebView. 3088 * @return A WebSettings object that can be used to control this WebView's 3089 * settings. 3090 */ 3091 public WebSettings getSettings() { 3092 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3093 } 3094 3095 /** 3096 * Use this method to inform the webview about packages that are installed 3097 * in the system. This information will be used by the 3098 * navigator.isApplicationInstalled() API. 3099 * @param packageNames is a set of package names that are known to be 3100 * installed in the system. 3101 * 3102 * @hide not a public API 3103 */ 3104 public void addPackageNames(Set<String> packageNames) { 3105 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 3106 } 3107 3108 /** 3109 * Use this method to inform the webview about single packages that are 3110 * installed in the system. This information will be used by the 3111 * navigator.isApplicationInstalled() API. 3112 * @param packageName is the name of a package that is known to be 3113 * installed in the system. 3114 * 3115 * @hide not a public API 3116 */ 3117 public void addPackageName(String packageName) { 3118 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3119 } 3120 3121 /** 3122 * Use this method to inform the webview about packages that are uninstalled 3123 * in the system. This information will be used by the 3124 * navigator.isApplicationInstalled() API. 3125 * @param packageName is the name of a package that has been uninstalled in 3126 * the system. 3127 * 3128 * @hide not a public API 3129 */ 3130 public void removePackageName(String packageName) { 3131 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3132 } 3133 3134 /** 3135 * Return the list of currently loaded plugins. 3136 * @return The list of currently loaded plugins. 3137 * 3138 * @deprecated This was used for Gears, which has been deprecated. 3139 */ 3140 @Deprecated 3141 public static synchronized PluginList getPluginList() { 3142 return new PluginList(); 3143 } 3144 3145 /** 3146 * @deprecated This was used for Gears, which has been deprecated. 3147 */ 3148 @Deprecated 3149 public void refreshPlugins(boolean reloadOpenPages) { } 3150 3151 //------------------------------------------------------------------------- 3152 // Override View methods 3153 //------------------------------------------------------------------------- 3154 3155 @Override 3156 protected void finalize() throws Throwable { 3157 try { 3158 destroy(); 3159 } finally { 3160 super.finalize(); 3161 } 3162 } 3163 3164 @Override 3165 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3166 if (child == mTitleBar) { 3167 // When drawing the title bar, move it horizontally to always show 3168 // at the top of the WebView. 3169 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3170 } 3171 return super.drawChild(canvas, child, drawingTime); 3172 } 3173 3174 private void drawContent(Canvas canvas) { 3175 // Update the buttons in the picture, so when we draw the picture 3176 // to the screen, they are in the correct state. 3177 // Tell the native side if user is a) touching the screen, 3178 // b) pressing the trackball down, or c) pressing the enter key 3179 // If the cursor is on a button, we need to draw it in the pressed 3180 // state. 3181 // If mNativeClass is 0, we should not reach here, so we do not 3182 // need to check it again. 3183 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3184 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3185 || mTrackballDown || mGotCenterDown, false); 3186 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3187 } 3188 3189 @Override 3190 protected void onDraw(Canvas canvas) { 3191 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3192 if (mNativeClass == 0) { 3193 return; 3194 } 3195 3196 // if both mContentWidth and mContentHeight are 0, it means there is no 3197 // valid Picture passed to WebView yet. This can happen when WebView 3198 // just starts. Draw the background and return. 3199 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3200 canvas.drawColor(mBackgroundColor); 3201 return; 3202 } 3203 3204 int saveCount = canvas.save(); 3205 if (mTitleBar != null) { 3206 canvas.translate(0, (int) mTitleBar.getHeight()); 3207 } 3208 if (mDragTrackerHandler == null) { 3209 drawContent(canvas); 3210 } else { 3211 if (!mDragTrackerHandler.draw(canvas)) { 3212 // sometimes the tracker doesn't draw, even though its active 3213 drawContent(canvas); 3214 } 3215 if (mDragTrackerHandler.isFinished()) { 3216 mDragTrackerHandler = null; 3217 } 3218 } 3219 canvas.restoreToCount(saveCount); 3220 3221 // Now draw the shadow. 3222 int titleH = getVisibleTitleHeight(); 3223 if (mTitleBar != null && titleH == 0) { 3224 int height = (int) (5f * getContext().getResources() 3225 .getDisplayMetrics().density); 3226 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3227 mScrollY + height); 3228 mTitleShadow.draw(canvas); 3229 } 3230 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3231 invalidate(); 3232 } 3233 if (inEditingMode()) mWebTextView.onDrawSubstitute(); 3234 mWebViewCore.signalRepaintDone(); 3235 } 3236 3237 @Override 3238 public void setLayoutParams(ViewGroup.LayoutParams params) { 3239 if (params.height == LayoutParams.WRAP_CONTENT) { 3240 mWrapContent = true; 3241 } 3242 super.setLayoutParams(params); 3243 } 3244 3245 @Override 3246 public boolean performLongClick() { 3247 // performLongClick() is the result of a delayed message. If we switch 3248 // to windows overview, the WebView will be temporarily removed from the 3249 // view system. In that case, do nothing. 3250 if (getParent() == null) return false; 3251 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3252 // Send the click so that the textfield is in focus 3253 centerKeyPressOnTextField(); 3254 rebuildWebTextView(); 3255 } else { 3256 clearTextEntry(true); 3257 } 3258 if (inEditingMode()) { 3259 return mWebTextView.performLongClick(); 3260 } else { 3261 return super.performLongClick(); 3262 } 3263 } 3264 3265 boolean inAnimateZoom() { 3266 return mZoomScale != 0; 3267 } 3268 3269 /** 3270 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3271 * has changed. This is especially important for password fields, which are 3272 * drawn by the WebTextView, since it conveys more information than what 3273 * webkit draws. Thus we need to reposition it to show in the correct 3274 * place. 3275 */ 3276 private boolean mNeedToAdjustWebTextView; 3277 3278 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3279 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3280 Rect vBox = contentToViewRect(contentBounds); 3281 Rect visibleRect = new Rect(); 3282 calcOurVisibleRect(visibleRect); 3283 // If the textfield is on screen, place the WebTextView in 3284 // its new place, accounting for our new scroll/zoom values, 3285 // and adjust its textsize. 3286 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3287 : visibleRect.contains(vBox)) { 3288 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3289 vBox.height()); 3290 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3291 contentToViewDimension( 3292 nativeFocusCandidateTextSize())); 3293 return true; 3294 } else { 3295 // The textfield is now off screen. The user probably 3296 // was not zooming to see the textfield better. Remove 3297 // the WebTextView. If the user types a key, and the 3298 // textfield is still in focus, we will reconstruct 3299 // the WebTextView and scroll it back on screen. 3300 mWebTextView.remove(); 3301 return false; 3302 } 3303 } 3304 3305 private void drawExtras(Canvas canvas, int extras, boolean animationsRunning) { 3306 // If mNativeClass is 0, we should not reach here, so we do not 3307 // need to check it again. 3308 if (animationsRunning) { 3309 canvas.setDrawFilter(mWebViewCore.mZoomFilter); 3310 } 3311 nativeDrawExtras(canvas, extras); 3312 canvas.setDrawFilter(null); 3313 } 3314 3315 private void drawCoreAndCursorRing(Canvas canvas, int color, 3316 boolean drawCursorRing) { 3317 if (mDrawHistory) { 3318 canvas.scale(mActualScale, mActualScale); 3319 canvas.drawPicture(mHistoryPicture); 3320 return; 3321 } 3322 3323 boolean animateZoom = mZoomScale != 0; 3324 boolean animateScroll = ((!mScroller.isFinished() 3325 || mVelocityTracker != null) 3326 && (mTouchMode != TOUCH_DRAG_MODE || 3327 mHeldMotionless != MOTIONLESS_TRUE)) 3328 || mDeferTouchMode == TOUCH_DRAG_MODE; 3329 if (mTouchMode == TOUCH_DRAG_MODE) { 3330 if (mHeldMotionless == MOTIONLESS_PENDING) { 3331 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3332 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3333 mHeldMotionless = MOTIONLESS_FALSE; 3334 } 3335 if (mHeldMotionless == MOTIONLESS_FALSE) { 3336 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3337 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3338 mHeldMotionless = MOTIONLESS_PENDING; 3339 } 3340 } 3341 if (animateZoom) { 3342 float zoomScale; 3343 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3344 if (interval < ZOOM_ANIMATION_LENGTH) { 3345 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3346 zoomScale = 1.0f / (mInvInitialZoomScale 3347 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3348 invalidate(); 3349 } else { 3350 zoomScale = mZoomScale; 3351 // set mZoomScale to be 0 as we have done animation 3352 mZoomScale = 0; 3353 WebViewCore.resumeUpdatePicture(mWebViewCore); 3354 // call invalidate() again to draw with the final filters 3355 invalidate(); 3356 if (mNeedToAdjustWebTextView) { 3357 mNeedToAdjustWebTextView = false; 3358 if (didUpdateTextViewBounds(false) 3359 && nativeFocusCandidateIsPassword()) { 3360 // If it is a password field, start drawing the 3361 // WebTextView once again. 3362 mWebTextView.setInPassword(true); 3363 } 3364 } 3365 } 3366 // calculate the intermediate scroll position. As we need to use 3367 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3368 float scale = zoomScale * mInvInitialZoomScale; 3369 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3370 - mZoomCenterX); 3371 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3372 * zoomScale)) + mScrollX; 3373 int titleHeight = getTitleHeight(); 3374 int ty = Math.round(scale 3375 * (mInitialScrollY + mZoomCenterY - titleHeight) 3376 - (mZoomCenterY - titleHeight)); 3377 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3378 - titleHeight, getViewHeight(), Math.round(mContentHeight 3379 * zoomScale)) + titleHeight) + mScrollY; 3380 canvas.translate(tx, ty); 3381 canvas.scale(zoomScale, zoomScale); 3382 if (inEditingMode() && !mNeedToAdjustWebTextView 3383 && mZoomScale != 0) { 3384 // The WebTextView is up. Keep track of this so we can adjust 3385 // its size and placement when we finish zooming 3386 mNeedToAdjustWebTextView = true; 3387 // If it is in password mode, turn it off so it does not draw 3388 // misplaced. 3389 if (nativeFocusCandidateIsPassword()) { 3390 mWebTextView.setInPassword(false); 3391 } 3392 } 3393 } else { 3394 canvas.scale(mActualScale, mActualScale); 3395 } 3396 3397 boolean UIAnimationsRunning = false; 3398 // Currently for each draw we compute the animation values; 3399 // We may in the future decide to do that independently. 3400 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3401 UIAnimationsRunning = true; 3402 // If we have unfinished (or unstarted) animations, 3403 // we ask for a repaint. 3404 invalidate(); 3405 } 3406 mWebViewCore.drawContentPicture(canvas, color, 3407 (animateZoom || mPreviewZoomOnly || UIAnimationsRunning), 3408 animateScroll); 3409 if (mNativeClass == 0) return; 3410 // decide which adornments to draw 3411 int extras = DRAW_EXTRAS_NONE; 3412 if (mFindIsUp) { 3413 // When the FindDialog is up, only draw the matches if we are not in 3414 // the process of scrolling them into view. 3415 if (!animateScroll) { 3416 extras = DRAW_EXTRAS_FIND; 3417 } 3418 } else if (mShiftIsPressed 3419 && !nativePageShouldHandleShiftAndArrows()) { 3420 if (!animateZoom && !mPreviewZoomOnly) { 3421 extras = DRAW_EXTRAS_SELECTION; 3422 nativeSetSelectionRegion(mTouchSelection || mExtendSelection); 3423 nativeSetSelectionPointer(!mTouchSelection, mInvActualScale, 3424 mSelectX, mSelectY - getTitleHeight(), 3425 mExtendSelection); 3426 } 3427 } else if (drawCursorRing) { 3428 extras = DRAW_EXTRAS_CURSOR_RING; 3429 } 3430 drawExtras(canvas, extras, UIAnimationsRunning); 3431 3432 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3433 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3434 mTouchMode = TOUCH_SHORTPRESS_MODE; 3435 HitTestResult hitTest = getHitTestResult(); 3436 if (hitTest == null 3437 || hitTest.mType == HitTestResult.UNKNOWN_TYPE) { 3438 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3439 } 3440 } 3441 } 3442 if (mFocusSizeChanged) { 3443 mFocusSizeChanged = false; 3444 // If we are zooming, this will get handled above, when the zoom 3445 // finishes. We also do not need to do this unless the WebTextView 3446 // is showing. 3447 if (!animateZoom && inEditingMode()) { 3448 didUpdateTextViewBounds(true); 3449 } 3450 } 3451 } 3452 3453 // draw history 3454 private boolean mDrawHistory = false; 3455 private Picture mHistoryPicture = null; 3456 private int mHistoryWidth = 0; 3457 private int mHistoryHeight = 0; 3458 3459 // Only check the flag, can be called from WebCore thread 3460 boolean drawHistory() { 3461 return mDrawHistory; 3462 } 3463 3464 // Should only be called in UI thread 3465 void switchOutDrawHistory() { 3466 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3467 if (mDrawHistory && mWebViewCore.pictureReady()) { 3468 mDrawHistory = false; 3469 mHistoryPicture = null; 3470 invalidate(); 3471 int oldScrollX = mScrollX; 3472 int oldScrollY = mScrollY; 3473 mScrollX = pinLocX(mScrollX); 3474 mScrollY = pinLocY(mScrollY); 3475 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3476 mUserScroll = false; 3477 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3478 oldScrollY); 3479 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3480 } else { 3481 sendOurVisibleRect(); 3482 } 3483 } 3484 } 3485 3486 WebViewCore.CursorData cursorData() { 3487 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3488 result.mMoveGeneration = nativeMoveGeneration(); 3489 result.mFrame = nativeCursorFramePointer(); 3490 Point position = nativeCursorPosition(); 3491 result.mX = position.x; 3492 result.mY = position.y; 3493 return result; 3494 } 3495 3496 /** 3497 * Delete text from start to end in the focused textfield. If there is no 3498 * focus, or if start == end, silently fail. If start and end are out of 3499 * order, swap them. 3500 * @param start Beginning of selection to delete. 3501 * @param end End of selection to delete. 3502 */ 3503 /* package */ void deleteSelection(int start, int end) { 3504 mTextGeneration++; 3505 WebViewCore.TextSelectionData data 3506 = new WebViewCore.TextSelectionData(start, end); 3507 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3508 data); 3509 } 3510 3511 /** 3512 * Set the selection to (start, end) in the focused textfield. If start and 3513 * end are out of order, swap them. 3514 * @param start Beginning of selection. 3515 * @param end End of selection. 3516 */ 3517 /* package */ void setSelection(int start, int end) { 3518 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3519 } 3520 3521 @Override 3522 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3523 InputConnection connection = super.onCreateInputConnection(outAttrs); 3524 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3525 return connection; 3526 } 3527 3528 /** 3529 * Called in response to a message from webkit telling us that the soft 3530 * keyboard should be launched. 3531 */ 3532 private void displaySoftKeyboard(boolean isTextView) { 3533 InputMethodManager imm = (InputMethodManager) 3534 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3535 3536 // bring it back to the default scale so that user can enter text 3537 boolean zoom = mActualScale < mDefaultScale; 3538 if (zoom) { 3539 mZoomManager.mInZoomOverview = false; 3540 mZoomCenterX = mLastTouchX; 3541 mZoomCenterY = mLastTouchY; 3542 // do not change text wrap scale so that there is no reflow 3543 setNewZoomScale(mDefaultScale, false, false); 3544 } 3545 if (isTextView) { 3546 rebuildWebTextView(); 3547 if (inEditingMode()) { 3548 imm.showSoftInput(mWebTextView, 0); 3549 if (zoom) { 3550 didUpdateTextViewBounds(true); 3551 } 3552 return; 3553 } 3554 } 3555 // Used by plugins. 3556 // Also used if the navigation cache is out of date, and 3557 // does not recognize that a textfield is in focus. In that 3558 // case, use WebView as the targeted view. 3559 // see http://b/issue?id=2457459 3560 imm.showSoftInput(this, 0); 3561 } 3562 3563 // Called by WebKit to instruct the UI to hide the keyboard 3564 private void hideSoftKeyboard() { 3565 InputMethodManager imm = (InputMethodManager) 3566 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3567 3568 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3569 } 3570 3571 /* 3572 * This method checks the current focus and cursor and potentially rebuilds 3573 * mWebTextView to have the appropriate properties, such as password, 3574 * multiline, and what text it contains. It also removes it if necessary. 3575 */ 3576 /* package */ void rebuildWebTextView() { 3577 // If the WebView does not have focus, do nothing until it gains focus. 3578 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3579 return; 3580 } 3581 boolean alreadyThere = inEditingMode(); 3582 // inEditingMode can only return true if mWebTextView is non-null, 3583 // so we can safely call remove() if (alreadyThere) 3584 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3585 if (alreadyThere) { 3586 mWebTextView.remove(); 3587 } 3588 return; 3589 } 3590 // At this point, we know we have found an input field, so go ahead 3591 // and create the WebTextView if necessary. 3592 if (mWebTextView == null) { 3593 mWebTextView = new WebTextView(mContext, WebView.this); 3594 // Initialize our generation number. 3595 mTextGeneration = 0; 3596 } 3597 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3598 contentToViewDimension(nativeFocusCandidateTextSize())); 3599 Rect visibleRect = new Rect(); 3600 calcOurContentVisibleRect(visibleRect); 3601 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3602 // should be in content coordinates. 3603 Rect bounds = nativeFocusCandidateNodeBounds(); 3604 Rect vBox = contentToViewRect(bounds); 3605 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3606 if (!Rect.intersects(bounds, visibleRect)) { 3607 mWebTextView.bringIntoView(); 3608 } 3609 String text = nativeFocusCandidateText(); 3610 int nodePointer = nativeFocusCandidatePointer(); 3611 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3612 // It is possible that we have the same textfield, but it has moved, 3613 // i.e. In the case of opening/closing the screen. 3614 // In that case, we need to set the dimensions, but not the other 3615 // aspects. 3616 // If the text has been changed by webkit, update it. However, if 3617 // there has been more UI text input, ignore it. We will receive 3618 // another update when that text is recognized. 3619 if (text != null && !text.equals(mWebTextView.getText().toString()) 3620 && nativeTextGeneration() == mTextGeneration) { 3621 mWebTextView.setTextAndKeepSelection(text); 3622 } 3623 } else { 3624 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3625 Gravity.RIGHT : Gravity.NO_GRAVITY); 3626 // This needs to be called before setType, which may call 3627 // requestFormData, and it needs to have the correct nodePointer. 3628 mWebTextView.setNodePointer(nodePointer); 3629 mWebTextView.setType(nativeFocusCandidateType()); 3630 if (null == text) { 3631 if (DebugFlags.WEB_VIEW) { 3632 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3633 } 3634 text = ""; 3635 } 3636 mWebTextView.setTextAndKeepSelection(text); 3637 InputMethodManager imm = InputMethodManager.peekInstance(); 3638 if (imm != null && imm.isActive(mWebTextView)) { 3639 imm.restartInput(mWebTextView); 3640 } 3641 } 3642 mWebTextView.requestFocus(); 3643 } 3644 3645 /** 3646 * Called by WebTextView to find saved form data associated with the 3647 * textfield 3648 * @param name Name of the textfield. 3649 * @param nodePointer Pointer to the node of the textfield, so it can be 3650 * compared to the currently focused textfield when the data is 3651 * retrieved. 3652 */ 3653 /* package */ void requestFormData(String name, int nodePointer) { 3654 if (mWebViewCore.getSettings().getSaveFormData()) { 3655 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3656 update.arg1 = nodePointer; 3657 RequestFormData updater = new RequestFormData(name, getUrl(), 3658 update); 3659 Thread t = new Thread(updater); 3660 t.start(); 3661 } 3662 } 3663 3664 /** 3665 * Pass a message to find out the <label> associated with the <input> 3666 * identified by nodePointer 3667 * @param framePointer Pointer to the frame containing the <input> node 3668 * @param nodePointer Pointer to the node for which a <label> is desired. 3669 */ 3670 /* package */ void requestLabel(int framePointer, int nodePointer) { 3671 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3672 nodePointer); 3673 } 3674 3675 /* 3676 * This class requests an Adapter for the WebTextView which shows past 3677 * entries stored in the database. It is a Runnable so that it can be done 3678 * in its own thread, without slowing down the UI. 3679 */ 3680 private class RequestFormData implements Runnable { 3681 private String mName; 3682 private String mUrl; 3683 private Message mUpdateMessage; 3684 3685 public RequestFormData(String name, String url, Message msg) { 3686 mName = name; 3687 mUrl = url; 3688 mUpdateMessage = msg; 3689 } 3690 3691 public void run() { 3692 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3693 if (pastEntries.size() > 0) { 3694 AutoCompleteAdapter adapter = new 3695 AutoCompleteAdapter(mContext, pastEntries); 3696 mUpdateMessage.obj = adapter; 3697 mUpdateMessage.sendToTarget(); 3698 } 3699 } 3700 } 3701 3702 /** 3703 * Dump the display tree to "/sdcard/displayTree.txt" 3704 * 3705 * @hide debug only 3706 */ 3707 public void dumpDisplayTree() { 3708 nativeDumpDisplayTree(getUrl()); 3709 } 3710 3711 /** 3712 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3713 * "/sdcard/domTree.txt" 3714 * 3715 * @hide debug only 3716 */ 3717 public void dumpDomTree(boolean toFile) { 3718 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3719 } 3720 3721 /** 3722 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3723 * to "/sdcard/renderTree.txt" 3724 * 3725 * @hide debug only 3726 */ 3727 public void dumpRenderTree(boolean toFile) { 3728 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3729 } 3730 3731 /** 3732 * Dump the V8 counters to standard output. 3733 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3734 * true. Otherwise, this will do nothing. 3735 * 3736 * @hide debug only 3737 */ 3738 public void dumpV8Counters() { 3739 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3740 } 3741 3742 // This is used to determine long press with the center key. Does not 3743 // affect long press with the trackball/touch. 3744 private boolean mGotCenterDown = false; 3745 3746 @Override 3747 public boolean onKeyDown(int keyCode, KeyEvent event) { 3748 if (DebugFlags.WEB_VIEW) { 3749 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3750 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3751 } 3752 3753 if (mNativeClass == 0) { 3754 return false; 3755 } 3756 3757 // do this hack up front, so it always works, regardless of touch-mode 3758 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3759 mAutoRedraw = !mAutoRedraw; 3760 if (mAutoRedraw) { 3761 invalidate(); 3762 } 3763 return true; 3764 } 3765 3766 // Bubble up the key event if 3767 // 1. it is a system key; or 3768 // 2. the host application wants to handle it; 3769 // 3. the accessibility injector is present and wants to handle it; 3770 if (event.isSystem() 3771 || mCallbackProxy.uiOverrideKeyEvent(event) 3772 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 3773 return false; 3774 } 3775 3776 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3777 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3778 if (nativePageShouldHandleShiftAndArrows()) { 3779 mShiftIsPressed = true; 3780 } else if (!nativeCursorWantsKeyEvents() && !mShiftIsPressed) { 3781 setUpSelectXY(); 3782 } 3783 } 3784 3785 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3786 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3787 switchOutDrawHistory(); 3788 if (nativePageShouldHandleShiftAndArrows()) { 3789 letPageHandleNavKey(keyCode, event.getEventTime(), true); 3790 return true; 3791 } 3792 if (mShiftIsPressed) { 3793 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3794 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3795 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3796 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3797 int multiplier = event.getRepeatCount() + 1; 3798 moveSelection(xRate * multiplier, yRate * multiplier); 3799 return true; 3800 } 3801 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 3802 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3803 return true; 3804 } 3805 // Bubble up the key event as WebView doesn't handle it 3806 return false; 3807 } 3808 3809 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3810 switchOutDrawHistory(); 3811 if (event.getRepeatCount() == 0) { 3812 if (mShiftIsPressed 3813 && !nativePageShouldHandleShiftAndArrows()) { 3814 return true; // discard press if copy in progress 3815 } 3816 mGotCenterDown = true; 3817 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3818 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3819 // Already checked mNativeClass, so we do not need to check it 3820 // again. 3821 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3822 return true; 3823 } 3824 // Bubble up the key event as WebView doesn't handle it 3825 return false; 3826 } 3827 3828 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3829 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3830 // turn off copy select if a shift-key combo is pressed 3831 mExtendSelection = mShiftIsPressed = false; 3832 if (mTouchMode == TOUCH_SELECT_MODE) { 3833 mTouchMode = TOUCH_INIT_MODE; 3834 } 3835 } 3836 3837 if (getSettings().getNavDump()) { 3838 switch (keyCode) { 3839 case KeyEvent.KEYCODE_4: 3840 dumpDisplayTree(); 3841 break; 3842 case KeyEvent.KEYCODE_5: 3843 case KeyEvent.KEYCODE_6: 3844 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3845 break; 3846 case KeyEvent.KEYCODE_7: 3847 case KeyEvent.KEYCODE_8: 3848 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3849 break; 3850 case KeyEvent.KEYCODE_9: 3851 nativeInstrumentReport(); 3852 return true; 3853 } 3854 } 3855 3856 if (nativeCursorIsTextInput()) { 3857 // This message will put the node in focus, for the DOM's notion 3858 // of focus, and make the focuscontroller active 3859 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3860 nativeCursorNodePointer()); 3861 // This will bring up the WebTextView and put it in focus, for 3862 // our view system's notion of focus 3863 rebuildWebTextView(); 3864 // Now we need to pass the event to it 3865 if (inEditingMode()) { 3866 mWebTextView.setDefaultSelection(); 3867 return mWebTextView.dispatchKeyEvent(event); 3868 } 3869 } else if (nativeHasFocusNode()) { 3870 // In this case, the cursor is not on a text input, but the focus 3871 // might be. Check it, and if so, hand over to the WebTextView. 3872 rebuildWebTextView(); 3873 if (inEditingMode()) { 3874 mWebTextView.setDefaultSelection(); 3875 return mWebTextView.dispatchKeyEvent(event); 3876 } 3877 } 3878 3879 // TODO: should we pass all the keys to DOM or check the meta tag 3880 if (nativeCursorWantsKeyEvents() || true) { 3881 // pass the key to DOM 3882 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3883 // return true as DOM handles the key 3884 return true; 3885 } 3886 3887 // Bubble up the key event as WebView doesn't handle it 3888 return false; 3889 } 3890 3891 @Override 3892 public boolean onKeyUp(int keyCode, KeyEvent event) { 3893 if (DebugFlags.WEB_VIEW) { 3894 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3895 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3896 } 3897 3898 if (mNativeClass == 0) { 3899 return false; 3900 } 3901 3902 // special CALL handling when cursor node's href is "tel:XXX" 3903 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3904 String text = nativeCursorText(); 3905 if (!nativeCursorIsTextInput() && text != null 3906 && text.startsWith(SCHEME_TEL)) { 3907 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3908 getContext().startActivity(intent); 3909 return true; 3910 } 3911 } 3912 3913 // Bubble up the key event if 3914 // 1. it is a system key; or 3915 // 2. the host application wants to handle it; 3916 // 3. the accessibility injector is present and wants to handle it; 3917 if (event.isSystem() 3918 || mCallbackProxy.uiOverrideKeyEvent(event) 3919 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 3920 return false; 3921 } 3922 3923 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3924 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3925 if (nativePageShouldHandleShiftAndArrows()) { 3926 mShiftIsPressed = false; 3927 } else if (commitCopy()) { 3928 return true; 3929 } 3930 } 3931 3932 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3933 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3934 if (nativePageShouldHandleShiftAndArrows()) { 3935 letPageHandleNavKey(keyCode, event.getEventTime(), false); 3936 return true; 3937 } 3938 // always handle the navigation keys in the UI thread 3939 // Bubble up the key event as WebView doesn't handle it 3940 return false; 3941 } 3942 3943 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3944 // remove the long press message first 3945 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3946 mGotCenterDown = false; 3947 3948 if (mShiftIsPressed && !nativePageShouldHandleShiftAndArrows()) { 3949 if (mExtendSelection) { 3950 commitCopy(); 3951 } else { 3952 mExtendSelection = true; 3953 invalidate(); // draw the i-beam instead of the arrow 3954 } 3955 return true; // discard press if copy in progress 3956 } 3957 3958 // perform the single click 3959 Rect visibleRect = sendOurVisibleRect(); 3960 // Note that sendOurVisibleRect calls viewToContent, so the 3961 // coordinates should be in content coordinates. 3962 if (!nativeCursorIntersects(visibleRect)) { 3963 return false; 3964 } 3965 WebViewCore.CursorData data = cursorData(); 3966 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3967 playSoundEffect(SoundEffectConstants.CLICK); 3968 if (nativeCursorIsTextInput()) { 3969 rebuildWebTextView(); 3970 centerKeyPressOnTextField(); 3971 if (inEditingMode()) { 3972 mWebTextView.setDefaultSelection(); 3973 } 3974 return true; 3975 } 3976 clearTextEntry(true); 3977 nativeSetFollowedLink(true); 3978 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3979 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3980 nativeCursorNodePointer()); 3981 } 3982 return true; 3983 } 3984 3985 // TODO: should we pass all the keys to DOM or check the meta tag 3986 if (nativeCursorWantsKeyEvents() || true) { 3987 // pass the key to DOM 3988 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3989 // return true as DOM handles the key 3990 return true; 3991 } 3992 3993 // Bubble up the key event as WebView doesn't handle it 3994 return false; 3995 } 3996 3997 private void setUpSelectXY() { 3998 mExtendSelection = false; 3999 mShiftIsPressed = true; 4000 if (nativeHasCursorNode()) { 4001 Rect rect = nativeCursorNodeBounds(); 4002 mSelectX = contentToViewX(rect.left); 4003 mSelectY = contentToViewY(rect.top); 4004 } else if (mLastTouchY > getVisibleTitleHeight()) { 4005 mSelectX = mScrollX + (int) mLastTouchX; 4006 mSelectY = mScrollY + (int) mLastTouchY; 4007 } else { 4008 mSelectX = mScrollX + getViewWidth() / 2; 4009 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4010 } 4011 nativeHideCursor(); 4012 } 4013 4014 /** 4015 * Use this method to put the WebView into text selection mode. 4016 * Do not rely on this functionality; it will be deprecated in the future. 4017 */ 4018 public void emulateShiftHeld() { 4019 if (0 == mNativeClass) return; // client isn't initialized 4020 setUpSelectXY(); 4021 } 4022 4023 private boolean commitCopy() { 4024 boolean copiedSomething = false; 4025 if (mExtendSelection) { 4026 String selection = nativeGetSelection(); 4027 if (selection != "") { 4028 if (DebugFlags.WEB_VIEW) { 4029 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 4030 } 4031 Toast.makeText(mContext 4032 , com.android.internal.R.string.text_copied 4033 , Toast.LENGTH_SHORT).show(); 4034 copiedSomething = true; 4035 try { 4036 IClipboard clip = IClipboard.Stub.asInterface( 4037 ServiceManager.getService("clipboard")); 4038 clip.setClipboardText(selection); 4039 } catch (android.os.RemoteException e) { 4040 Log.e(LOGTAG, "Clipboard failed", e); 4041 } 4042 } 4043 mExtendSelection = false; 4044 } 4045 mShiftIsPressed = false; 4046 invalidate(); // remove selection region and pointer 4047 if (mTouchMode == TOUCH_SELECT_MODE) { 4048 mTouchMode = TOUCH_INIT_MODE; 4049 } 4050 return copiedSomething; 4051 } 4052 4053 @Override 4054 protected void onAttachedToWindow() { 4055 super.onAttachedToWindow(); 4056 if (hasWindowFocus()) setActive(true); 4057 } 4058 4059 @Override 4060 protected void onDetachedFromWindow() { 4061 clearTextEntry(false); 4062 mZoomManager.dismissZoomPicker(); 4063 if (hasWindowFocus()) setActive(false); 4064 super.onDetachedFromWindow(); 4065 } 4066 4067 @Override 4068 protected void onVisibilityChanged(View changedView, int visibility) { 4069 super.onVisibilityChanged(changedView, visibility); 4070 if (visibility != View.VISIBLE) { 4071 mZoomManager.dismissZoomPicker(); 4072 } 4073 } 4074 4075 /** 4076 * @deprecated WebView no longer needs to implement 4077 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4078 */ 4079 @Deprecated 4080 public void onChildViewAdded(View parent, View child) {} 4081 4082 /** 4083 * @deprecated WebView no longer needs to implement 4084 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4085 */ 4086 @Deprecated 4087 public void onChildViewRemoved(View p, View child) {} 4088 4089 /** 4090 * @deprecated WebView should not have implemented 4091 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4092 * does nothing now. 4093 */ 4094 @Deprecated 4095 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4096 } 4097 4098 private void setActive(boolean active) { 4099 if (active) { 4100 if (hasFocus()) { 4101 // If our window regained focus, and we have focus, then begin 4102 // drawing the cursor ring 4103 mDrawCursorRing = true; 4104 if (mNativeClass != 0) { 4105 nativeRecordButtons(true, false, true); 4106 if (inEditingMode()) { 4107 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4108 } 4109 } 4110 } else { 4111 // If our window gained focus, but we do not have it, do not 4112 // draw the cursor ring. 4113 mDrawCursorRing = false; 4114 // We do not call nativeRecordButtons here because we assume 4115 // that when we lost focus, or window focus, it got called with 4116 // false for the first parameter 4117 } 4118 } else { 4119 if (!mZoomManager.isZoomPickerVisible()) { 4120 /* 4121 * The external zoom controls come in their own window, so our 4122 * window loses focus. Our policy is to not draw the cursor ring 4123 * if our window is not focused, but this is an exception since 4124 * the user can still navigate the web page with the zoom 4125 * controls showing. 4126 */ 4127 mDrawCursorRing = false; 4128 } 4129 mGotKeyDown = false; 4130 mShiftIsPressed = false; 4131 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4132 mTouchMode = TOUCH_DONE_MODE; 4133 if (mNativeClass != 0) { 4134 nativeRecordButtons(false, false, true); 4135 } 4136 setFocusControllerInactive(); 4137 } 4138 invalidate(); 4139 } 4140 4141 // To avoid drawing the cursor ring, and remove the TextView when our window 4142 // loses focus. 4143 @Override 4144 public void onWindowFocusChanged(boolean hasWindowFocus) { 4145 setActive(hasWindowFocus); 4146 if (hasWindowFocus) { 4147 BrowserFrame.sJavaBridge.setActiveWebView(this); 4148 } else { 4149 BrowserFrame.sJavaBridge.removeActiveWebView(this); 4150 } 4151 super.onWindowFocusChanged(hasWindowFocus); 4152 } 4153 4154 /* 4155 * Pass a message to WebCore Thread, telling the WebCore::Page's 4156 * FocusController to be "inactive" so that it will 4157 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4158 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4159 */ 4160 /* package */ void setFocusControllerInactive() { 4161 // Do not need to also check whether mWebViewCore is null, because 4162 // mNativeClass is only set if mWebViewCore is non null 4163 if (mNativeClass == 0) return; 4164 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4165 } 4166 4167 @Override 4168 protected void onFocusChanged(boolean focused, int direction, 4169 Rect previouslyFocusedRect) { 4170 if (DebugFlags.WEB_VIEW) { 4171 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4172 } 4173 if (focused) { 4174 // When we regain focus, if we have window focus, resume drawing 4175 // the cursor ring 4176 if (hasWindowFocus()) { 4177 mDrawCursorRing = true; 4178 if (mNativeClass != 0) { 4179 nativeRecordButtons(true, false, true); 4180 } 4181 //} else { 4182 // The WebView has gained focus while we do not have 4183 // windowfocus. When our window lost focus, we should have 4184 // called nativeRecordButtons(false...) 4185 } 4186 } else { 4187 // When we lost focus, unless focus went to the TextView (which is 4188 // true if we are in editing mode), stop drawing the cursor ring. 4189 if (!inEditingMode()) { 4190 mDrawCursorRing = false; 4191 if (mNativeClass != 0) { 4192 nativeRecordButtons(false, false, true); 4193 } 4194 setFocusControllerInactive(); 4195 } 4196 mGotKeyDown = false; 4197 } 4198 4199 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4200 } 4201 4202 /** 4203 * @hide 4204 */ 4205 @Override 4206 protected boolean setFrame(int left, int top, int right, int bottom) { 4207 boolean changed = super.setFrame(left, top, right, bottom); 4208 if (!changed && mHeightCanMeasure) { 4209 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4210 // in WebViewCore after we get the first layout. We do call 4211 // requestLayout() when we get contentSizeChanged(). But the View 4212 // system won't call onSizeChanged if the dimension is not changed. 4213 // In this case, we need to call sendViewSizeZoom() explicitly to 4214 // notify the WebKit about the new dimensions. 4215 sendViewSizeZoom(); 4216 } 4217 return changed; 4218 } 4219 4220 private static class PostScale implements Runnable { 4221 final WebView mWebView; 4222 final boolean mUpdateTextWrap; 4223 4224 public PostScale(WebView webView, boolean updateTextWrap) { 4225 mWebView = webView; 4226 mUpdateTextWrap = updateTextWrap; 4227 } 4228 4229 public void run() { 4230 if (mWebView.mWebViewCore != null) { 4231 // we always force, in case our height changed, in which case we 4232 // still want to send the notification over to webkit. 4233 mWebView.setNewZoomScale(mWebView.mActualScale, 4234 mUpdateTextWrap, true); 4235 // update the zoom buttons as the scale can be changed 4236 mWebView.mZoomManager.updateZoomPicker(); 4237 } 4238 } 4239 } 4240 4241 @Override 4242 protected void onSizeChanged(int w, int h, int ow, int oh) { 4243 super.onSizeChanged(w, h, ow, oh); 4244 // Center zooming to the center of the screen. 4245 if (mZoomScale == 0) { // unless we're already zooming 4246 // To anchor at top left corner. 4247 mZoomCenterX = 0; 4248 mZoomCenterY = getVisibleTitleHeight(); 4249 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4250 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4251 } 4252 4253 // adjust the max viewport width depending on the view dimensions. This 4254 // is to ensure the scaling is not going insane. So do not shrink it if 4255 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4256 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.DEFAULT_MIN_ZOOM_SCALE); 4257 if (newMaxViewportWidth > sMaxViewportWidth) { 4258 sMaxViewportWidth = newMaxViewportWidth; 4259 } 4260 4261 // update mMinZoomScale if the minimum zoom scale is not fixed 4262 if (!mZoomManager.mMinZoomScaleFixed) { 4263 // when change from narrow screen to wide screen, the new viewWidth 4264 // can be wider than the old content width. We limit the minimum 4265 // scale to 1.0f. The proper minimum scale will be calculated when 4266 // the new picture shows up. 4267 mZoomManager.mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4268 / (mDrawHistory ? mHistoryPicture.getWidth() 4269 : mZoomOverviewWidth)); 4270 if (mInitialScaleInPercent > 0) { 4271 // limit the minZoomScale to the initialScale if it is set 4272 float initialScale = mInitialScaleInPercent / 100.0f; 4273 if (mZoomManager.mMinZoomScale > initialScale) { 4274 mZoomManager.mMinZoomScale = initialScale; 4275 } 4276 } 4277 } 4278 4279 mZoomManager.dismissZoomPicker(); 4280 4281 // onSizeChanged() is called during WebView layout. And any 4282 // requestLayout() is blocked during layout. As setNewZoomScale() will 4283 // call its child View to reposition itself through ViewManager's 4284 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4285 // <b/> 4286 // only update the text wrap scale if width changed. 4287 post(new PostScale(this, w != ow)); 4288 } 4289 4290 @Override 4291 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4292 super.onScrollChanged(l, t, oldl, oldt); 4293 sendOurVisibleRect(); 4294 // update WebKit if visible title bar height changed. The logic is same 4295 // as getVisibleTitleHeight. 4296 int titleHeight = getTitleHeight(); 4297 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4298 sendViewSizeZoom(); 4299 } 4300 } 4301 4302 @Override 4303 public boolean dispatchKeyEvent(KeyEvent event) { 4304 boolean dispatch = true; 4305 4306 // Textfields, plugins, and contentEditable nodes need to receive the 4307 // shift up key even if another key was released while the shift key 4308 // was held down. 4309 if (!inEditingMode() && (mNativeClass == 0 4310 || !nativePageShouldHandleShiftAndArrows())) { 4311 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4312 mGotKeyDown = true; 4313 } else { 4314 if (!mGotKeyDown) { 4315 /* 4316 * We got a key up for which we were not the recipient of 4317 * the original key down. Don't give it to the view. 4318 */ 4319 dispatch = false; 4320 } 4321 mGotKeyDown = false; 4322 } 4323 } 4324 4325 if (dispatch) { 4326 return super.dispatchKeyEvent(event); 4327 } else { 4328 // We didn't dispatch, so let something else handle the key 4329 return false; 4330 } 4331 } 4332 4333 // Here are the snap align logic: 4334 // 1. If it starts nearly horizontally or vertically, snap align; 4335 // 2. If there is a dramitic direction change, let it go; 4336 // 3. If there is a same direction back and forth, lock it. 4337 4338 // adjustable parameters 4339 private int mMinLockSnapReverseDistance; 4340 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4341 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4342 4343 private static int sign(float x) { 4344 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4345 } 4346 4347 // if the page can scroll <= this value, we won't allow the drag tracker 4348 // to have any effect. 4349 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4350 4351 private class DragTrackerHandler { 4352 private final DragTracker mProxy; 4353 private final float mStartY, mStartX; 4354 private final float mMinDY, mMinDX; 4355 private final float mMaxDY, mMaxDX; 4356 private float mCurrStretchY, mCurrStretchX; 4357 private int mSX, mSY; 4358 private Interpolator mInterp; 4359 private float[] mXY = new float[2]; 4360 4361 // inner (non-state) classes can't have enums :( 4362 private static final int DRAGGING_STATE = 0; 4363 private static final int ANIMATING_STATE = 1; 4364 private static final int FINISHED_STATE = 2; 4365 private int mState; 4366 4367 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4368 mProxy = proxy; 4369 4370 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4371 int viewTop = getScrollY(); 4372 int viewBottom = viewTop + getHeight(); 4373 4374 mStartY = y; 4375 mMinDY = -viewTop; 4376 mMaxDY = docBottom - viewBottom; 4377 4378 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4379 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4380 " up/down= " + mMinDY + " " + mMaxDY); 4381 } 4382 4383 int docRight = computeHorizontalScrollRange(); 4384 int viewLeft = getScrollX(); 4385 int viewRight = viewLeft + getWidth(); 4386 mStartX = x; 4387 mMinDX = -viewLeft; 4388 mMaxDX = docRight - viewRight; 4389 4390 mState = DRAGGING_STATE; 4391 mProxy.onStartDrag(x, y); 4392 4393 // ensure we buildBitmap at least once 4394 mSX = -99999; 4395 } 4396 4397 private float computeStretch(float delta, float min, float max) { 4398 float stretch = 0; 4399 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4400 if (delta < min) { 4401 stretch = delta - min; 4402 } else if (delta > max) { 4403 stretch = delta - max; 4404 } 4405 } 4406 return stretch; 4407 } 4408 4409 public void dragTo(float x, float y) { 4410 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4411 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4412 4413 if ((mSnapScrollMode & SNAP_X) != 0) { 4414 sy = 0; 4415 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4416 sx = 0; 4417 } 4418 4419 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4420 mCurrStretchX = sx; 4421 mCurrStretchY = sy; 4422 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4423 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4424 " " + sy); 4425 } 4426 if (mProxy.onStretchChange(sx, sy)) { 4427 invalidate(); 4428 } 4429 } 4430 } 4431 4432 public void stopDrag() { 4433 final int DURATION = 200; 4434 int now = (int)SystemClock.uptimeMillis(); 4435 mInterp = new Interpolator(2); 4436 mXY[0] = mCurrStretchX; 4437 mXY[1] = mCurrStretchY; 4438 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4439 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4440 mInterp.setKeyFrame(0, now, mXY, blend); 4441 float[] zerozero = new float[] { 0, 0 }; 4442 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4443 mState = ANIMATING_STATE; 4444 4445 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4446 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4447 } 4448 } 4449 4450 // Call this after each draw. If it ruturns null, the tracker is done 4451 public boolean isFinished() { 4452 return mState == FINISHED_STATE; 4453 } 4454 4455 private int hiddenHeightOfTitleBar() { 4456 return getTitleHeight() - getVisibleTitleHeight(); 4457 } 4458 4459 // need a way to know if 565 or 8888 is the right config for 4460 // capturing the display and giving it to the drag proxy 4461 private Bitmap.Config offscreenBitmapConfig() { 4462 // hard code 565 for now 4463 return Bitmap.Config.RGB_565; 4464 } 4465 4466 /* If the tracker draws, then this returns true, otherwise it will 4467 return false, and draw nothing. 4468 */ 4469 public boolean draw(Canvas canvas) { 4470 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4471 int sx = getScrollX(); 4472 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4473 if (mSX != sx || mSY != sy) { 4474 buildBitmap(sx, sy); 4475 mSX = sx; 4476 mSY = sy; 4477 } 4478 4479 if (mState == ANIMATING_STATE) { 4480 Interpolator.Result result = mInterp.timeToValues(mXY); 4481 if (result == Interpolator.Result.FREEZE_END) { 4482 mState = FINISHED_STATE; 4483 return false; 4484 } else { 4485 mProxy.onStretchChange(mXY[0], mXY[1]); 4486 invalidate(); 4487 // fall through to the draw 4488 } 4489 } 4490 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4491 canvas.translate(sx, sy); 4492 mProxy.onDraw(canvas); 4493 canvas.restoreToCount(count); 4494 return true; 4495 } 4496 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4497 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4498 mCurrStretchX + " " + mCurrStretchY); 4499 } 4500 return false; 4501 } 4502 4503 private void buildBitmap(int sx, int sy) { 4504 int w = getWidth(); 4505 int h = getViewHeight(); 4506 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4507 Canvas canvas = new Canvas(bm); 4508 canvas.translate(-sx, -sy); 4509 drawContent(canvas); 4510 4511 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4512 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4513 " " + sy + " " + w + " " + h); 4514 } 4515 mProxy.onBitmapChange(bm); 4516 } 4517 } 4518 4519 /** @hide */ 4520 public static class DragTracker { 4521 public void onStartDrag(float x, float y) {} 4522 public boolean onStretchChange(float sx, float sy) { 4523 // return true to have us inval the view 4524 return false; 4525 } 4526 public void onStopDrag() {} 4527 public void onBitmapChange(Bitmap bm) {} 4528 public void onDraw(Canvas canvas) {} 4529 } 4530 4531 /** @hide */ 4532 public DragTracker getDragTracker() { 4533 return mDragTracker; 4534 } 4535 4536 /** @hide */ 4537 public void setDragTracker(DragTracker tracker) { 4538 mDragTracker = tracker; 4539 } 4540 4541 private DragTracker mDragTracker; 4542 private DragTrackerHandler mDragTrackerHandler; 4543 4544 private class ScaleDetectorListener implements 4545 ScaleGestureDetector.OnScaleGestureListener { 4546 4547 public boolean onScaleBegin(ScaleGestureDetector detector) { 4548 // cancel the single touch handling 4549 cancelTouch(); 4550 mZoomManager.dismissZoomPicker(); 4551 // reset the zoom overview mode so that the page won't auto grow 4552 mZoomManager.mInZoomOverview = false; 4553 // If it is in password mode, turn it off so it does not draw 4554 // misplaced. 4555 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4556 mWebTextView.setInPassword(false); 4557 } 4558 4559 mViewManager.startZoom(); 4560 4561 return true; 4562 } 4563 4564 public void onScaleEnd(ScaleGestureDetector detector) { 4565 if (mPreviewZoomOnly) { 4566 mPreviewZoomOnly = false; 4567 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4568 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4569 // don't reflow when zoom in; when zoom out, do reflow if the 4570 // new scale is almost minimum scale; 4571 boolean reflowNow = (mActualScale - mZoomManager.mMinZoomScale 4572 <= MINIMUM_SCALE_INCREMENT) 4573 || ((mActualScale <= 0.8 * mTextWrapScale)); 4574 // force zoom after mPreviewZoomOnly is set to false so that the 4575 // new view size will be passed to the WebKit 4576 setNewZoomScale(mActualScale, reflowNow, true); 4577 // call invalidate() to draw without zoom filter 4578 invalidate(); 4579 } 4580 // adjust the edit text view if needed 4581 if (inEditingMode() && didUpdateTextViewBounds(false) 4582 && nativeFocusCandidateIsPassword()) { 4583 // If it is a password field, start drawing the 4584 // WebTextView once again. 4585 mWebTextView.setInPassword(true); 4586 } 4587 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4588 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4589 // may trigger the unwanted fling. 4590 mTouchMode = TOUCH_PINCH_DRAG; 4591 mConfirmMove = true; 4592 startTouch(detector.getFocusX(), detector.getFocusY(), 4593 mLastTouchTime); 4594 4595 mViewManager.endZoom(); 4596 } 4597 4598 public boolean onScale(ScaleGestureDetector detector) { 4599 float scale = (float) (Math.round(detector.getScaleFactor() 4600 * mActualScale * 100) / 100.0); 4601 if (Math.abs(scale - mActualScale) >= MINIMUM_SCALE_INCREMENT) { 4602 mPreviewZoomOnly = true; 4603 // limit the scale change per step 4604 if (scale > mActualScale) { 4605 scale = Math.min(scale, mActualScale * 1.25f); 4606 } else { 4607 scale = Math.max(scale, mActualScale * 0.8f); 4608 } 4609 mZoomCenterX = detector.getFocusX(); 4610 mZoomCenterY = detector.getFocusY(); 4611 setNewZoomScale(scale, false, false); 4612 invalidate(); 4613 return true; 4614 } 4615 return false; 4616 } 4617 } 4618 4619 private boolean hitFocusedPlugin(int contentX, int contentY) { 4620 if (DebugFlags.WEB_VIEW) { 4621 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4622 Rect r = nativeFocusNodeBounds(); 4623 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4624 + ", " + r.right + ", " + r.bottom + ")"); 4625 } 4626 return nativeFocusIsPlugin() 4627 && nativeFocusNodeBounds().contains(contentX, contentY); 4628 } 4629 4630 private boolean shouldForwardTouchEvent() { 4631 return mFullScreenHolder != null || (mForwardTouchEvents 4632 && mTouchMode != TOUCH_SELECT_MODE 4633 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4634 } 4635 4636 private boolean inFullScreenMode() { 4637 return mFullScreenHolder != null; 4638 } 4639 4640 @Override 4641 public boolean onTouchEvent(MotionEvent ev) { 4642 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4643 return false; 4644 } 4645 4646 if (DebugFlags.WEB_VIEW) { 4647 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4648 + mTouchMode); 4649 } 4650 4651 int action; 4652 float x, y; 4653 long eventTime = ev.getEventTime(); 4654 4655 // FIXME: we may consider to give WebKit an option to handle multi-touch 4656 // events later. 4657 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4658 if (mZoomManager.mMinZoomScale < mZoomManager.mMaxZoomScale) { 4659 mScaleDetector.onTouchEvent(ev); 4660 if (mScaleDetector.isInProgress()) { 4661 mLastTouchTime = eventTime; 4662 return true; 4663 } 4664 x = mScaleDetector.getFocusX(); 4665 y = mScaleDetector.getFocusY(); 4666 action = ev.getAction() & MotionEvent.ACTION_MASK; 4667 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4668 cancelTouch(); 4669 action = MotionEvent.ACTION_DOWN; 4670 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4671 // set mLastTouchX/Y to the remaining point 4672 mLastTouchX = x; 4673 mLastTouchY = y; 4674 } else if (action == MotionEvent.ACTION_MOVE) { 4675 // negative x or y indicate it is on the edge, skip it. 4676 if (x < 0 || y < 0) { 4677 return true; 4678 } 4679 } 4680 } else { 4681 // if the page disallow zoom, skip multi-pointer action 4682 return true; 4683 } 4684 } else { 4685 action = ev.getAction(); 4686 x = ev.getX(); 4687 y = ev.getY(); 4688 } 4689 4690 // Due to the touch screen edge effect, a touch closer to the edge 4691 // always snapped to the edge. As getViewWidth() can be different from 4692 // getWidth() due to the scrollbar, adjusting the point to match 4693 // getViewWidth(). Same applied to the height. 4694 if (x > getViewWidth() - 1) { 4695 x = getViewWidth() - 1; 4696 } 4697 if (y > getViewHeightWithTitle() - 1) { 4698 y = getViewHeightWithTitle() - 1; 4699 } 4700 4701 float fDeltaX = mLastTouchX - x; 4702 float fDeltaY = mLastTouchY - y; 4703 int deltaX = (int) fDeltaX; 4704 int deltaY = (int) fDeltaY; 4705 int contentX = viewToContentX((int) x + mScrollX); 4706 int contentY = viewToContentY((int) y + mScrollY); 4707 4708 switch (action) { 4709 case MotionEvent.ACTION_DOWN: { 4710 mPreventDefault = PREVENT_DEFAULT_NO; 4711 mConfirmMove = false; 4712 if (!mScroller.isFinished()) { 4713 // stop the current scroll animation, but if this is 4714 // the start of a fling, allow it to add to the current 4715 // fling's velocity 4716 mScroller.abortAnimation(); 4717 mTouchMode = TOUCH_DRAG_START_MODE; 4718 mConfirmMove = true; 4719 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4720 } else if (!inFullScreenMode() && mShiftIsPressed) { 4721 mSelectX = mScrollX + (int) x; 4722 mSelectY = mScrollY + (int) y; 4723 mTouchMode = TOUCH_SELECT_MODE; 4724 if (DebugFlags.WEB_VIEW) { 4725 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4726 } 4727 nativeMoveSelection(contentX, contentY, false); 4728 mTouchSelection = mExtendSelection = true; 4729 invalidate(); // draw the i-beam instead of the arrow 4730 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4731 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4732 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4733 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4734 } else { 4735 // commit the short press action for the previous tap 4736 doShortPress(); 4737 mTouchMode = TOUCH_INIT_MODE; 4738 mDeferTouchProcess = (!inFullScreenMode() 4739 && mForwardTouchEvents) ? hitFocusedPlugin( 4740 contentX, contentY) : false; 4741 } 4742 } else { // the normal case 4743 mPreviewZoomOnly = false; 4744 mTouchMode = TOUCH_INIT_MODE; 4745 mDeferTouchProcess = (!inFullScreenMode() 4746 && mForwardTouchEvents) ? hitFocusedPlugin( 4747 contentX, contentY) : false; 4748 mWebViewCore.sendMessage( 4749 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4750 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4751 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4752 (eventTime - mLastTouchUpTime), eventTime); 4753 } 4754 } 4755 // Trigger the link 4756 if (mTouchMode == TOUCH_INIT_MODE 4757 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4758 mPrivateHandler.sendEmptyMessageDelayed( 4759 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 4760 mPrivateHandler.sendEmptyMessageDelayed( 4761 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 4762 if (inFullScreenMode() || mDeferTouchProcess) { 4763 mPreventDefault = PREVENT_DEFAULT_YES; 4764 } else if (mForwardTouchEvents) { 4765 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 4766 } else { 4767 mPreventDefault = PREVENT_DEFAULT_NO; 4768 } 4769 // pass the touch events from UI thread to WebCore thread 4770 if (shouldForwardTouchEvent()) { 4771 TouchEventData ted = new TouchEventData(); 4772 ted.mAction = action; 4773 ted.mX = contentX; 4774 ted.mY = contentY; 4775 ted.mMetaState = ev.getMetaState(); 4776 ted.mReprocess = mDeferTouchProcess; 4777 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4778 if (mDeferTouchProcess) { 4779 // still needs to set them for compute deltaX/Y 4780 mLastTouchX = x; 4781 mLastTouchY = y; 4782 break; 4783 } 4784 if (!inFullScreenMode()) { 4785 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4786 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4787 action, 0), TAP_TIMEOUT); 4788 } 4789 } 4790 } 4791 startTouch(x, y, eventTime); 4792 break; 4793 } 4794 case MotionEvent.ACTION_MOVE: { 4795 boolean firstMove = false; 4796 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 4797 >= mTouchSlopSquare) { 4798 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4799 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4800 mConfirmMove = true; 4801 firstMove = true; 4802 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4803 mTouchMode = TOUCH_INIT_MODE; 4804 } 4805 } 4806 // pass the touch events from UI thread to WebCore thread 4807 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 4808 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4809 TouchEventData ted = new TouchEventData(); 4810 ted.mAction = action; 4811 ted.mX = contentX; 4812 ted.mY = contentY; 4813 ted.mMetaState = ev.getMetaState(); 4814 ted.mReprocess = mDeferTouchProcess; 4815 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4816 mLastSentTouchTime = eventTime; 4817 if (mDeferTouchProcess) { 4818 break; 4819 } 4820 if (firstMove && !inFullScreenMode()) { 4821 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4822 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4823 action, 0), TAP_TIMEOUT); 4824 } 4825 } 4826 if (mTouchMode == TOUCH_DONE_MODE 4827 || mPreventDefault == PREVENT_DEFAULT_YES) { 4828 // no dragging during scroll zoom animation, or when prevent 4829 // default is yes 4830 break; 4831 } 4832 if (mVelocityTracker == null) { 4833 Log.e(LOGTAG, "Got null mVelocityTracker when " 4834 + "mPreventDefault = " + mPreventDefault 4835 + " mDeferTouchProcess = " + mDeferTouchProcess 4836 + " mTouchMode = " + mTouchMode); 4837 } 4838 mVelocityTracker.addMovement(ev); 4839 if (mTouchMode != TOUCH_DRAG_MODE) { 4840 if (mTouchMode == TOUCH_SELECT_MODE) { 4841 mSelectX = mScrollX + (int) x; 4842 mSelectY = mScrollY + (int) y; 4843 if (DebugFlags.WEB_VIEW) { 4844 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4845 } 4846 nativeMoveSelection(contentX, contentY, true); 4847 invalidate(); 4848 break; 4849 } 4850 4851 if (!mConfirmMove) { 4852 break; 4853 } 4854 4855 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 4856 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 4857 // track mLastTouchTime as we may need to do fling at 4858 // ACTION_UP 4859 mLastTouchTime = eventTime; 4860 break; 4861 } 4862 // if it starts nearly horizontal or vertical, enforce it 4863 int ax = Math.abs(deltaX); 4864 int ay = Math.abs(deltaY); 4865 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4866 mSnapScrollMode = SNAP_X; 4867 mSnapPositive = deltaX > 0; 4868 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4869 mSnapScrollMode = SNAP_Y; 4870 mSnapPositive = deltaY > 0; 4871 } 4872 4873 mTouchMode = TOUCH_DRAG_MODE; 4874 mLastTouchX = x; 4875 mLastTouchY = y; 4876 fDeltaX = 0.0f; 4877 fDeltaY = 0.0f; 4878 deltaX = 0; 4879 deltaY = 0; 4880 4881 startDrag(); 4882 } 4883 4884 if (mDragTrackerHandler != null) { 4885 mDragTrackerHandler.dragTo(x, y); 4886 } 4887 4888 // do pan 4889 int newScrollX = pinLocX(mScrollX + deltaX); 4890 int newDeltaX = newScrollX - mScrollX; 4891 if (deltaX != newDeltaX) { 4892 deltaX = newDeltaX; 4893 fDeltaX = (float) newDeltaX; 4894 } 4895 int newScrollY = pinLocY(mScrollY + deltaY); 4896 int newDeltaY = newScrollY - mScrollY; 4897 if (deltaY != newDeltaY) { 4898 deltaY = newDeltaY; 4899 fDeltaY = (float) newDeltaY; 4900 } 4901 boolean done = false; 4902 boolean keepScrollBarsVisible = false; 4903 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4904 mLastTouchX = x; 4905 mLastTouchY = y; 4906 keepScrollBarsVisible = done = true; 4907 } else { 4908 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4909 int ax = Math.abs(deltaX); 4910 int ay = Math.abs(deltaY); 4911 if (mSnapScrollMode == SNAP_X) { 4912 // radical change means getting out of snap mode 4913 if (ay > MAX_SLOPE_FOR_DIAG * ax 4914 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4915 mSnapScrollMode = SNAP_NONE; 4916 } 4917 // reverse direction means lock in the snap mode 4918 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4919 (mSnapPositive 4920 ? deltaX < -mMinLockSnapReverseDistance 4921 : deltaX > mMinLockSnapReverseDistance)) { 4922 mSnapScrollMode |= SNAP_LOCK; 4923 } 4924 } else { 4925 // radical change means getting out of snap mode 4926 if (ax > MAX_SLOPE_FOR_DIAG * ay 4927 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4928 mSnapScrollMode = SNAP_NONE; 4929 } 4930 // reverse direction means lock in the snap mode 4931 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4932 (mSnapPositive 4933 ? deltaY < -mMinLockSnapReverseDistance 4934 : deltaY > mMinLockSnapReverseDistance)) { 4935 mSnapScrollMode |= SNAP_LOCK; 4936 } 4937 } 4938 } 4939 if (mSnapScrollMode != SNAP_NONE) { 4940 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4941 deltaY = 0; 4942 } else { 4943 deltaX = 0; 4944 } 4945 } 4946 if ((deltaX | deltaY) != 0) { 4947 if (deltaX != 0) { 4948 mLastTouchX = x; 4949 } 4950 if (deltaY != 0) { 4951 mLastTouchY = y; 4952 } 4953 mHeldMotionless = MOTIONLESS_FALSE; 4954 } else { 4955 // keep the scrollbar on the screen even there is no 4956 // scroll 4957 mLastTouchX = x; 4958 mLastTouchY = y; 4959 keepScrollBarsVisible = true; 4960 } 4961 mLastTouchTime = eventTime; 4962 mUserScroll = true; 4963 } 4964 4965 doDrag(deltaX, deltaY); 4966 4967 if (keepScrollBarsVisible) { 4968 if (mHeldMotionless != MOTIONLESS_TRUE) { 4969 mHeldMotionless = MOTIONLESS_TRUE; 4970 invalidate(); 4971 } 4972 // keep the scrollbar on the screen even there is no scroll 4973 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4974 false); 4975 // return false to indicate that we can't pan out of the 4976 // view space 4977 return !done; 4978 } 4979 break; 4980 } 4981 case MotionEvent.ACTION_UP: { 4982 if (!isFocused()) requestFocus(); 4983 // pass the touch events from UI thread to WebCore thread 4984 if (shouldForwardTouchEvent()) { 4985 TouchEventData ted = new TouchEventData(); 4986 ted.mAction = action; 4987 ted.mX = contentX; 4988 ted.mY = contentY; 4989 ted.mMetaState = ev.getMetaState(); 4990 ted.mReprocess = mDeferTouchProcess; 4991 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4992 } 4993 mLastTouchUpTime = eventTime; 4994 switch (mTouchMode) { 4995 case TOUCH_DOUBLE_TAP_MODE: // double tap 4996 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4997 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4998 if (inFullScreenMode() || mDeferTouchProcess) { 4999 TouchEventData ted = new TouchEventData(); 5000 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5001 ted.mX = contentX; 5002 ted.mY = contentY; 5003 ted.mMetaState = ev.getMetaState(); 5004 ted.mReprocess = mDeferTouchProcess; 5005 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5006 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5007 doDoubleTap(); 5008 mTouchMode = TOUCH_DONE_MODE; 5009 } 5010 break; 5011 case TOUCH_SELECT_MODE: 5012 commitCopy(); 5013 mTouchSelection = false; 5014 break; 5015 case TOUCH_INIT_MODE: // tap 5016 case TOUCH_SHORTPRESS_START_MODE: 5017 case TOUCH_SHORTPRESS_MODE: 5018 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5019 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5020 if (mConfirmMove) { 5021 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5022 " WebCore's response for touch down."); 5023 if (mPreventDefault != PREVENT_DEFAULT_YES 5024 && (computeMaxScrollX() > 0 5025 || computeMaxScrollY() > 0)) { 5026 // If the user has performed a very quick touch 5027 // sequence it is possible that we may get here 5028 // before WebCore has had a chance to process the events. 5029 // In this case, any call to preventDefault in the 5030 // JS touch handler will not have been executed yet. 5031 // Hence we will see both the UI (now) and WebCore 5032 // (when context switches) handling the event, 5033 // regardless of whether the web developer actually 5034 // doeses preventDefault in their touch handler. This 5035 // is the nature of our asynchronous touch model. 5036 5037 // we will not rewrite drag code here, but we 5038 // will try fling if it applies. 5039 WebViewCore.reducePriority(); 5040 // to get better performance, pause updating the 5041 // picture 5042 WebViewCore.pauseUpdatePicture(mWebViewCore); 5043 // fall through to TOUCH_DRAG_MODE 5044 } else { 5045 // WebKit may consume the touch event and modify 5046 // DOM. drawContentPicture() will be called with 5047 // animateSroll as true for better performance. 5048 // Force redraw in high-quality. 5049 invalidate(); 5050 break; 5051 } 5052 } else { 5053 if (mTouchMode == TOUCH_INIT_MODE) { 5054 mPrivateHandler.sendEmptyMessageDelayed( 5055 RELEASE_SINGLE_TAP, ViewConfiguration 5056 .getDoubleTapTimeout()); 5057 } else { 5058 doShortPress(); 5059 } 5060 break; 5061 } 5062 case TOUCH_DRAG_MODE: 5063 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5064 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5065 // if the user waits a while w/o moving before the 5066 // up, we don't want to do a fling 5067 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5068 if (mVelocityTracker == null) { 5069 Log.e(LOGTAG, "Got null mVelocityTracker when " 5070 + "mPreventDefault = " 5071 + mPreventDefault 5072 + " mDeferTouchProcess = " 5073 + mDeferTouchProcess); 5074 } 5075 mVelocityTracker.addMovement(ev); 5076 // set to MOTIONLESS_IGNORE so that it won't keep 5077 // removing and sending message in 5078 // drawCoreAndCursorRing() 5079 mHeldMotionless = MOTIONLESS_IGNORE; 5080 doFling(); 5081 break; 5082 } 5083 // redraw in high-quality, as we're done dragging 5084 mHeldMotionless = MOTIONLESS_TRUE; 5085 invalidate(); 5086 // fall through 5087 case TOUCH_DRAG_START_MODE: 5088 // TOUCH_DRAG_START_MODE should not happen for the real 5089 // device as we almost certain will get a MOVE. But this 5090 // is possible on emulator. 5091 mLastVelocity = 0; 5092 WebViewCore.resumePriority(); 5093 WebViewCore.resumeUpdatePicture(mWebViewCore); 5094 break; 5095 } 5096 stopTouch(); 5097 break; 5098 } 5099 case MotionEvent.ACTION_CANCEL: { 5100 if (mTouchMode == TOUCH_DRAG_MODE) { 5101 invalidate(); 5102 } 5103 cancelWebCoreTouchEvent(contentX, contentY, false); 5104 cancelTouch(); 5105 break; 5106 } 5107 } 5108 return true; 5109 } 5110 5111 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5112 if (shouldForwardTouchEvent()) { 5113 if (removeEvents) { 5114 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5115 } 5116 TouchEventData ted = new TouchEventData(); 5117 ted.mX = x; 5118 ted.mY = y; 5119 ted.mAction = MotionEvent.ACTION_CANCEL; 5120 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5121 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5122 } 5123 } 5124 5125 private void startTouch(float x, float y, long eventTime) { 5126 // Remember where the motion event started 5127 mLastTouchX = x; 5128 mLastTouchY = y; 5129 mLastTouchTime = eventTime; 5130 mVelocityTracker = VelocityTracker.obtain(); 5131 mSnapScrollMode = SNAP_NONE; 5132 if (mDragTracker != null) { 5133 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5134 } 5135 } 5136 5137 private void startDrag() { 5138 WebViewCore.reducePriority(); 5139 // to get better performance, pause updating the picture 5140 WebViewCore.pauseUpdatePicture(mWebViewCore); 5141 if (!mDragFromTextInput) { 5142 nativeHideCursor(); 5143 } 5144 5145 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5146 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 5147 mZoomManager.invokeZoomPicker(); 5148 } 5149 } 5150 5151 private void doDrag(int deltaX, int deltaY) { 5152 if ((deltaX | deltaY) != 0) { 5153 scrollBy(deltaX, deltaY); 5154 } 5155 mZoomManager.keepZoomPickerVisible(); 5156 } 5157 5158 private void stopTouch() { 5159 if (mDragTrackerHandler != null) { 5160 mDragTrackerHandler.stopDrag(); 5161 } 5162 // we also use mVelocityTracker == null to tell us that we are 5163 // not "moving around", so we can take the slower/prettier 5164 // mode in the drawing code 5165 if (mVelocityTracker != null) { 5166 mVelocityTracker.recycle(); 5167 mVelocityTracker = null; 5168 } 5169 } 5170 5171 private void cancelTouch() { 5172 if (mDragTrackerHandler != null) { 5173 mDragTrackerHandler.stopDrag(); 5174 } 5175 // we also use mVelocityTracker == null to tell us that we are 5176 // not "moving around", so we can take the slower/prettier 5177 // mode in the drawing code 5178 if (mVelocityTracker != null) { 5179 mVelocityTracker.recycle(); 5180 mVelocityTracker = null; 5181 } 5182 if (mTouchMode == TOUCH_DRAG_MODE) { 5183 WebViewCore.resumePriority(); 5184 WebViewCore.resumeUpdatePicture(mWebViewCore); 5185 } 5186 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5187 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5188 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5189 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5190 mHeldMotionless = MOTIONLESS_TRUE; 5191 mTouchMode = TOUCH_DONE_MODE; 5192 nativeHideCursor(); 5193 } 5194 5195 private long mTrackballFirstTime = 0; 5196 private long mTrackballLastTime = 0; 5197 private float mTrackballRemainsX = 0.0f; 5198 private float mTrackballRemainsY = 0.0f; 5199 private int mTrackballXMove = 0; 5200 private int mTrackballYMove = 0; 5201 private boolean mExtendSelection = false; 5202 private boolean mTouchSelection = false; 5203 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5204 private static final int TRACKBALL_TIMEOUT = 200; 5205 private static final int TRACKBALL_WAIT = 100; 5206 private static final int TRACKBALL_SCALE = 400; 5207 private static final int TRACKBALL_SCROLL_COUNT = 5; 5208 private static final int TRACKBALL_MOVE_COUNT = 10; 5209 private static final int TRACKBALL_MULTIPLIER = 3; 5210 private static final int SELECT_CURSOR_OFFSET = 16; 5211 private int mSelectX = 0; 5212 private int mSelectY = 0; 5213 private boolean mFocusSizeChanged = false; 5214 private boolean mShiftIsPressed = false; 5215 private boolean mTrackballDown = false; 5216 private long mTrackballUpTime = 0; 5217 private long mLastCursorTime = 0; 5218 private Rect mLastCursorBounds; 5219 5220 // Set by default; BrowserActivity clears to interpret trackball data 5221 // directly for movement. Currently, the framework only passes 5222 // arrow key events, not trackball events, from one child to the next 5223 private boolean mMapTrackballToArrowKeys = true; 5224 5225 public void setMapTrackballToArrowKeys(boolean setMap) { 5226 mMapTrackballToArrowKeys = setMap; 5227 } 5228 5229 void resetTrackballTime() { 5230 mTrackballLastTime = 0; 5231 } 5232 5233 @Override 5234 public boolean onTrackballEvent(MotionEvent ev) { 5235 long time = ev.getEventTime(); 5236 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5237 if (ev.getY() > 0) pageDown(true); 5238 if (ev.getY() < 0) pageUp(true); 5239 return true; 5240 } 5241 boolean shiftPressed = mShiftIsPressed && (mNativeClass == 0 5242 || !nativePageShouldHandleShiftAndArrows()); 5243 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5244 if (shiftPressed) { 5245 return true; // discard press if copy in progress 5246 } 5247 mTrackballDown = true; 5248 if (mNativeClass == 0) { 5249 return false; 5250 } 5251 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5252 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5253 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5254 nativeSelectBestAt(mLastCursorBounds); 5255 } 5256 if (DebugFlags.WEB_VIEW) { 5257 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5258 + " time=" + time 5259 + " mLastCursorTime=" + mLastCursorTime); 5260 } 5261 if (isInTouchMode()) requestFocusFromTouch(); 5262 return false; // let common code in onKeyDown at it 5263 } 5264 if (ev.getAction() == MotionEvent.ACTION_UP) { 5265 // LONG_PRESS_CENTER is set in common onKeyDown 5266 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5267 mTrackballDown = false; 5268 mTrackballUpTime = time; 5269 if (shiftPressed) { 5270 if (mExtendSelection) { 5271 commitCopy(); 5272 } else { 5273 mExtendSelection = true; 5274 invalidate(); // draw the i-beam instead of the arrow 5275 } 5276 return true; // discard press if copy in progress 5277 } 5278 if (DebugFlags.WEB_VIEW) { 5279 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5280 + " time=" + time 5281 ); 5282 } 5283 return false; // let common code in onKeyUp at it 5284 } 5285 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5286 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5287 return false; 5288 } 5289 if (mTrackballDown) { 5290 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5291 return true; // discard move if trackball is down 5292 } 5293 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5294 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5295 return true; 5296 } 5297 // TODO: alternatively we can do panning as touch does 5298 switchOutDrawHistory(); 5299 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5300 if (DebugFlags.WEB_VIEW) { 5301 Log.v(LOGTAG, "onTrackballEvent time=" 5302 + time + " last=" + mTrackballLastTime); 5303 } 5304 mTrackballFirstTime = time; 5305 mTrackballXMove = mTrackballYMove = 0; 5306 } 5307 mTrackballLastTime = time; 5308 if (DebugFlags.WEB_VIEW) { 5309 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5310 } 5311 mTrackballRemainsX += ev.getX(); 5312 mTrackballRemainsY += ev.getY(); 5313 doTrackball(time); 5314 return true; 5315 } 5316 5317 void moveSelection(float xRate, float yRate) { 5318 if (mNativeClass == 0) 5319 return; 5320 int width = getViewWidth(); 5321 int height = getViewHeight(); 5322 mSelectX += xRate; 5323 mSelectY += yRate; 5324 int maxX = width + mScrollX; 5325 int maxY = height + mScrollY; 5326 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5327 , mSelectX)); 5328 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5329 , mSelectY)); 5330 if (DebugFlags.WEB_VIEW) { 5331 Log.v(LOGTAG, "moveSelection" 5332 + " mSelectX=" + mSelectX 5333 + " mSelectY=" + mSelectY 5334 + " mScrollX=" + mScrollX 5335 + " mScrollY=" + mScrollY 5336 + " xRate=" + xRate 5337 + " yRate=" + yRate 5338 ); 5339 } 5340 nativeMoveSelection(viewToContentX(mSelectX), 5341 viewToContentY(mSelectY), mExtendSelection); 5342 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5343 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5344 : 0; 5345 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5346 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5347 : 0; 5348 pinScrollBy(scrollX, scrollY, true, 0); 5349 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5350 requestRectangleOnScreen(select); 5351 invalidate(); 5352 } 5353 5354 private int scaleTrackballX(float xRate, int width) { 5355 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5356 int nextXMove = xMove; 5357 if (xMove > 0) { 5358 if (xMove > mTrackballXMove) { 5359 xMove -= mTrackballXMove; 5360 } 5361 } else if (xMove < mTrackballXMove) { 5362 xMove -= mTrackballXMove; 5363 } 5364 mTrackballXMove = nextXMove; 5365 return xMove; 5366 } 5367 5368 private int scaleTrackballY(float yRate, int height) { 5369 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5370 int nextYMove = yMove; 5371 if (yMove > 0) { 5372 if (yMove > mTrackballYMove) { 5373 yMove -= mTrackballYMove; 5374 } 5375 } else if (yMove < mTrackballYMove) { 5376 yMove -= mTrackballYMove; 5377 } 5378 mTrackballYMove = nextYMove; 5379 return yMove; 5380 } 5381 5382 private int keyCodeToSoundsEffect(int keyCode) { 5383 switch(keyCode) { 5384 case KeyEvent.KEYCODE_DPAD_UP: 5385 return SoundEffectConstants.NAVIGATION_UP; 5386 case KeyEvent.KEYCODE_DPAD_RIGHT: 5387 return SoundEffectConstants.NAVIGATION_RIGHT; 5388 case KeyEvent.KEYCODE_DPAD_DOWN: 5389 return SoundEffectConstants.NAVIGATION_DOWN; 5390 case KeyEvent.KEYCODE_DPAD_LEFT: 5391 return SoundEffectConstants.NAVIGATION_LEFT; 5392 } 5393 throw new IllegalArgumentException("keyCode must be one of " + 5394 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5395 "KEYCODE_DPAD_LEFT}."); 5396 } 5397 5398 private void doTrackball(long time) { 5399 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5400 if (elapsed == 0) { 5401 elapsed = TRACKBALL_TIMEOUT; 5402 } 5403 float xRate = mTrackballRemainsX * 1000 / elapsed; 5404 float yRate = mTrackballRemainsY * 1000 / elapsed; 5405 int viewWidth = getViewWidth(); 5406 int viewHeight = getViewHeight(); 5407 if (mShiftIsPressed && (mNativeClass == 0 5408 || !nativePageShouldHandleShiftAndArrows())) { 5409 moveSelection(scaleTrackballX(xRate, viewWidth), 5410 scaleTrackballY(yRate, viewHeight)); 5411 mTrackballRemainsX = mTrackballRemainsY = 0; 5412 return; 5413 } 5414 float ax = Math.abs(xRate); 5415 float ay = Math.abs(yRate); 5416 float maxA = Math.max(ax, ay); 5417 if (DebugFlags.WEB_VIEW) { 5418 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5419 + " xRate=" + xRate 5420 + " yRate=" + yRate 5421 + " mTrackballRemainsX=" + mTrackballRemainsX 5422 + " mTrackballRemainsY=" + mTrackballRemainsY); 5423 } 5424 int width = mContentWidth - viewWidth; 5425 int height = mContentHeight - viewHeight; 5426 if (width < 0) width = 0; 5427 if (height < 0) height = 0; 5428 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5429 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5430 maxA = Math.max(ax, ay); 5431 int count = Math.max(0, (int) maxA); 5432 int oldScrollX = mScrollX; 5433 int oldScrollY = mScrollY; 5434 if (count > 0) { 5435 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5436 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5437 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5438 KeyEvent.KEYCODE_DPAD_RIGHT; 5439 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5440 if (DebugFlags.WEB_VIEW) { 5441 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5442 + " count=" + count 5443 + " mTrackballRemainsX=" + mTrackballRemainsX 5444 + " mTrackballRemainsY=" + mTrackballRemainsY); 5445 } 5446 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 5447 for (int i = 0; i < count; i++) { 5448 letPageHandleNavKey(selectKeyCode, time, true); 5449 } 5450 letPageHandleNavKey(selectKeyCode, time, false); 5451 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5452 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5453 } 5454 mTrackballRemainsX = mTrackballRemainsY = 0; 5455 } 5456 if (count >= TRACKBALL_SCROLL_COUNT) { 5457 int xMove = scaleTrackballX(xRate, width); 5458 int yMove = scaleTrackballY(yRate, height); 5459 if (DebugFlags.WEB_VIEW) { 5460 Log.v(LOGTAG, "doTrackball pinScrollBy" 5461 + " count=" + count 5462 + " xMove=" + xMove + " yMove=" + yMove 5463 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5464 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5465 ); 5466 } 5467 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5468 xMove = 0; 5469 } 5470 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5471 yMove = 0; 5472 } 5473 if (xMove != 0 || yMove != 0) { 5474 pinScrollBy(xMove, yMove, true, 0); 5475 } 5476 mUserScroll = true; 5477 } 5478 } 5479 5480 private int computeMaxScrollX() { 5481 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5482 } 5483 5484 private int computeMaxScrollY() { 5485 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5486 - getViewHeightWithTitle(), 0); 5487 } 5488 5489 public void flingScroll(int vx, int vy) { 5490 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5491 computeMaxScrollY()); 5492 invalidate(); 5493 } 5494 5495 private void doFling() { 5496 if (mVelocityTracker == null) { 5497 return; 5498 } 5499 int maxX = computeMaxScrollX(); 5500 int maxY = computeMaxScrollY(); 5501 5502 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5503 int vx = (int) mVelocityTracker.getXVelocity(); 5504 int vy = (int) mVelocityTracker.getYVelocity(); 5505 5506 if (mSnapScrollMode != SNAP_NONE) { 5507 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5508 vy = 0; 5509 } else { 5510 vx = 0; 5511 } 5512 } 5513 if (true /* EMG release: make our fling more like Maps' */) { 5514 // maps cuts their velocity in half 5515 vx = vx * 3 / 4; 5516 vy = vy * 3 / 4; 5517 } 5518 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5519 WebViewCore.resumePriority(); 5520 WebViewCore.resumeUpdatePicture(mWebViewCore); 5521 return; 5522 } 5523 float currentVelocity = mScroller.getCurrVelocity(); 5524 float velocity = (float) Math.hypot(vx, vy); 5525 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 5526 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 5527 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5528 - Math.atan2(vy, vx))); 5529 final float circle = (float) (Math.PI) * 2.0f; 5530 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5531 vx += currentVelocity * mLastVelX / mLastVelocity; 5532 vy += currentVelocity * mLastVelY / mLastVelocity; 5533 velocity = (float) Math.hypot(vx, vy); 5534 if (DebugFlags.WEB_VIEW) { 5535 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5536 } 5537 } else if (DebugFlags.WEB_VIEW) { 5538 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5539 } 5540 } else if (DebugFlags.WEB_VIEW) { 5541 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5542 + " current=" + currentVelocity 5543 + " vx=" + vx + " vy=" + vy 5544 + " maxX=" + maxX + " maxY=" + maxY 5545 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5546 } 5547 mLastVelX = vx; 5548 mLastVelY = vy; 5549 mLastVelocity = velocity; 5550 5551 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5552 // TODO: duration is calculated based on velocity, if the range is 5553 // small, the animation will stop before duration is up. We may 5554 // want to calculate how long the animation is going to run to precisely 5555 // resume the webcore update. 5556 final int time = mScroller.getDuration(); 5557 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5558 awakenScrollBars(time); 5559 invalidate(); 5560 } 5561 5562 private boolean zoomWithPreview(float scale, boolean updateTextWrapScale) { 5563 float oldScale = mActualScale; 5564 mInitialScrollX = mScrollX; 5565 mInitialScrollY = mScrollY; 5566 5567 // snap to DEFAULT_SCALE if it is close 5568 if (Math.abs(scale - mDefaultScale) < MINIMUM_SCALE_INCREMENT) { 5569 scale = mDefaultScale; 5570 } 5571 5572 setNewZoomScale(scale, updateTextWrapScale, false); 5573 5574 if (oldScale != mActualScale) { 5575 // use mZoomPickerScale to see zoom preview first 5576 mZoomStart = SystemClock.uptimeMillis(); 5577 mInvInitialZoomScale = 1.0f / oldScale; 5578 mInvFinalZoomScale = 1.0f / mActualScale; 5579 mZoomScale = mActualScale; 5580 WebViewCore.pauseUpdatePicture(mWebViewCore); 5581 invalidate(); 5582 return true; 5583 } else { 5584 return false; 5585 } 5586 } 5587 5588 /** 5589 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5590 * in charge of installing this view to the view hierarchy. This view will 5591 * become visible when the user starts scrolling via touch and fade away if 5592 * the user does not interact with it. 5593 * <p/> 5594 * API version 3 introduces a built-in zoom mechanism that is shown 5595 * automatically by the MapView. This is the preferred approach for 5596 * showing the zoom UI. 5597 * 5598 * @deprecated The built-in zoom mechanism is preferred, see 5599 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5600 */ 5601 @Deprecated 5602 public View getZoomControls() { 5603 if (!getSettings().supportZoom()) { 5604 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5605 return null; 5606 } 5607 return mZoomManager.getExternalZoomPicker(); 5608 } 5609 5610 void dismissZoomControl() { 5611 mZoomManager.dismissZoomPicker(); 5612 } 5613 5614 /** 5615 * Perform zoom in in the webview 5616 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5617 */ 5618 public boolean zoomIn() { 5619 // TODO: alternatively we can disallow this during draw history mode 5620 switchOutDrawHistory(); 5621 mZoomManager.mInZoomOverview = false; 5622 // Center zooming to the center of the screen. 5623 mZoomCenterX = getViewWidth() * .5f; 5624 mZoomCenterY = getViewHeight() * .5f; 5625 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5626 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5627 return zoomWithPreview(mActualScale * 1.25f, true); 5628 } 5629 5630 /** 5631 * Perform zoom out in the webview 5632 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5633 */ 5634 public boolean zoomOut() { 5635 // TODO: alternatively we can disallow this during draw history mode 5636 switchOutDrawHistory(); 5637 // Center zooming to the center of the screen. 5638 mZoomCenterX = getViewWidth() * .5f; 5639 mZoomCenterY = getViewHeight() * .5f; 5640 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5641 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5642 return zoomWithPreview(mActualScale * 0.8f, true); 5643 } 5644 5645 private void updateSelection() { 5646 if (mNativeClass == 0) { 5647 return; 5648 } 5649 // mLastTouchX and mLastTouchY are the point in the current viewport 5650 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5651 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5652 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5653 contentX + mNavSlop, contentY + mNavSlop); 5654 nativeSelectBestAt(rect); 5655 } 5656 5657 /** 5658 * Scroll the focused text field/area to match the WebTextView 5659 * @param xPercent New x position of the WebTextView from 0 to 1. 5660 * @param y New y position of the WebTextView in view coordinates 5661 */ 5662 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5663 if (!inEditingMode() || mWebViewCore == null) { 5664 return; 5665 } 5666 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5667 // Since this position is relative to the top of the text input 5668 // field, we do not need to take the title bar's height into 5669 // consideration. 5670 viewToContentDimension(y), 5671 new Float(xPercent)); 5672 } 5673 5674 /** 5675 * Set our starting point and time for a drag from the WebTextView. 5676 */ 5677 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5678 if (!inEditingMode()) { 5679 return; 5680 } 5681 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5682 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5683 mLastTouchTime = eventTime; 5684 if (!mScroller.isFinished()) { 5685 abortAnimation(); 5686 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5687 } 5688 mSnapScrollMode = SNAP_NONE; 5689 mVelocityTracker = VelocityTracker.obtain(); 5690 mTouchMode = TOUCH_DRAG_START_MODE; 5691 } 5692 5693 /** 5694 * Given a motion event from the WebTextView, set its location to our 5695 * coordinates, and handle the event. 5696 */ 5697 /*package*/ boolean textFieldDrag(MotionEvent event) { 5698 if (!inEditingMode()) { 5699 return false; 5700 } 5701 mDragFromTextInput = true; 5702 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5703 (float) (mWebTextView.getTop() - mScrollY)); 5704 boolean result = onTouchEvent(event); 5705 mDragFromTextInput = false; 5706 return result; 5707 } 5708 5709 /** 5710 * Due a touch up from a WebTextView. This will be handled by webkit to 5711 * change the selection. 5712 * @param event MotionEvent in the WebTextView's coordinates. 5713 */ 5714 /*package*/ void touchUpOnTextField(MotionEvent event) { 5715 if (!inEditingMode()) { 5716 return; 5717 } 5718 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5719 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5720 nativeMotionUp(x, y, mNavSlop); 5721 } 5722 5723 /** 5724 * Called when pressing the center key or trackball on a textfield. 5725 */ 5726 /*package*/ void centerKeyPressOnTextField() { 5727 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5728 nativeCursorNodePointer()); 5729 } 5730 5731 private void doShortPress() { 5732 if (mNativeClass == 0) { 5733 return; 5734 } 5735 if (mPreventDefault == PREVENT_DEFAULT_YES) { 5736 return; 5737 } 5738 mTouchMode = TOUCH_DONE_MODE; 5739 switchOutDrawHistory(); 5740 // mLastTouchX and mLastTouchY are the point in the current viewport 5741 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5742 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5743 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5744 WebViewCore.MotionUpData motionUpData = new WebViewCore 5745 .MotionUpData(); 5746 motionUpData.mFrame = nativeCacheHitFramePointer(); 5747 motionUpData.mNode = nativeCacheHitNodePointer(); 5748 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5749 motionUpData.mX = contentX; 5750 motionUpData.mY = contentY; 5751 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5752 motionUpData); 5753 } else { 5754 doMotionUp(contentX, contentY); 5755 } 5756 } 5757 5758 private void doMotionUp(int contentX, int contentY) { 5759 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5760 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5761 } 5762 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5763 playSoundEffect(SoundEffectConstants.CLICK); 5764 } 5765 } 5766 5767 /* 5768 * Return true if the view (Plugin) is fully visible and maximized inside 5769 * the WebView. 5770 */ 5771 private boolean isPluginFitOnScreen(ViewManager.ChildView view) { 5772 int viewWidth = getViewWidth(); 5773 int viewHeight = getViewHeightWithTitle(); 5774 float scale = Math.min((float) viewWidth / view.width, 5775 (float) viewHeight / view.height); 5776 if (scale < mZoomManager.mMinZoomScale) { 5777 scale = mZoomManager.mMinZoomScale; 5778 } else if (scale > mZoomManager.mMaxZoomScale) { 5779 scale = mZoomManager.mMaxZoomScale; 5780 } 5781 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5782 if (contentToViewX(view.x) >= mScrollX 5783 && contentToViewX(view.x + view.width) <= mScrollX 5784 + viewWidth 5785 && contentToViewY(view.y) >= mScrollY 5786 && contentToViewY(view.y + view.height) <= mScrollY 5787 + viewHeight) { 5788 return true; 5789 } 5790 } 5791 return false; 5792 } 5793 5794 /* 5795 * Maximize and center the rectangle, specified in the document coordinate 5796 * space, inside the WebView. If the zoom doesn't need to be changed, do an 5797 * animated scroll to center it. If the zoom needs to be changed, find the 5798 * zoom center and do a smooth zoom transition. 5799 */ 5800 private void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 5801 int viewWidth = getViewWidth(); 5802 int viewHeight = getViewHeightWithTitle(); 5803 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 5804 / docHeight); 5805 if (scale < mZoomManager.mMinZoomScale) { 5806 scale = mZoomManager.mMinZoomScale; 5807 } else if (scale > mZoomManager.mMaxZoomScale) { 5808 scale = mZoomManager.mMaxZoomScale; 5809 } 5810 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5811 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 5812 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 5813 true, 0); 5814 } else { 5815 float oldScreenX = docX * mActualScale - mScrollX; 5816 float rectViewX = docX * scale; 5817 float rectViewWidth = docWidth * scale; 5818 float newMaxWidth = mContentWidth * scale; 5819 float newScreenX = (viewWidth - rectViewWidth) / 2; 5820 // pin the newX to the WebView 5821 if (newScreenX > rectViewX) { 5822 newScreenX = rectViewX; 5823 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 5824 newScreenX = viewWidth - (newMaxWidth - rectViewX); 5825 } 5826 mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale) 5827 / (scale - mActualScale); 5828 float oldScreenY = docY * mActualScale + getTitleHeight() 5829 - mScrollY; 5830 float rectViewY = docY * scale + getTitleHeight(); 5831 float rectViewHeight = docHeight * scale; 5832 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 5833 float newScreenY = (viewHeight - rectViewHeight) / 2; 5834 // pin the newY to the WebView 5835 if (newScreenY > rectViewY) { 5836 newScreenY = rectViewY; 5837 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 5838 newScreenY = viewHeight - (newMaxHeight - rectViewY); 5839 } 5840 mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale) 5841 / (scale - mActualScale); 5842 zoomWithPreview(scale, false); 5843 } 5844 } 5845 5846 // Rule for double tap: 5847 // 1. if the current scale is not same as the text wrap scale and layout 5848 // algorithm is NARROW_COLUMNS, fit to column; 5849 // 2. if the current state is not overview mode, change to overview mode; 5850 // 3. if the current state is overview mode, change to default scale. 5851 private void doDoubleTap() { 5852 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5853 return; 5854 } 5855 mZoomCenterX = mLastTouchX; 5856 mZoomCenterY = mLastTouchY; 5857 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5858 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5859 WebSettings settings = getSettings(); 5860 settings.setDoubleTapToastCount(0); 5861 // remove the zoom control after double tap 5862 mZoomManager.dismissZoomPicker(); 5863 ViewManager.ChildView plugin = mViewManager.hitTest(mAnchorX, mAnchorY); 5864 if (plugin != null) { 5865 if (isPluginFitOnScreen(plugin)) { 5866 mZoomManager.mInZoomOverview = true; 5867 // Force the titlebar fully reveal in overview mode 5868 if (mScrollY < getTitleHeight()) mScrollY = 0; 5869 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth, 5870 true); 5871 } else { 5872 mZoomManager.mInZoomOverview = false; 5873 centerFitRect(plugin.x, plugin.y, plugin.width, plugin.height); 5874 } 5875 return; 5876 } 5877 boolean zoomToDefault = false; 5878 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5879 && (Math.abs(mActualScale - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT)) { 5880 setNewZoomScale(mActualScale, true, true); 5881 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5882 if (Math.abs(mActualScale - overviewScale) < MINIMUM_SCALE_INCREMENT) { 5883 mZoomManager.mInZoomOverview = true; 5884 } 5885 } else if (!mZoomManager.mInZoomOverview) { 5886 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5887 if (Math.abs(mActualScale - newScale) >= MINIMUM_SCALE_INCREMENT) { 5888 mZoomManager.mInZoomOverview = true; 5889 // Force the titlebar fully reveal in overview mode 5890 if (mScrollY < getTitleHeight()) mScrollY = 0; 5891 zoomWithPreview(newScale, true); 5892 } else if (Math.abs(mActualScale - mDefaultScale) >= MINIMUM_SCALE_INCREMENT) { 5893 zoomToDefault = true; 5894 } 5895 } else { 5896 zoomToDefault = true; 5897 } 5898 if (zoomToDefault) { 5899 mZoomManager.mInZoomOverview = false; 5900 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5901 if (left != NO_LEFTEDGE) { 5902 // add a 5pt padding to the left edge. 5903 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5904 - mScrollX; 5905 // Re-calculate the zoom center so that the new scroll x will be 5906 // on the left edge. 5907 if (viewLeft > 0) { 5908 mZoomCenterX = viewLeft * mDefaultScale 5909 / (mDefaultScale - mActualScale); 5910 } else { 5911 scrollBy(viewLeft, 0); 5912 mZoomCenterX = 0; 5913 } 5914 } 5915 zoomWithPreview(mDefaultScale, true); 5916 } 5917 } 5918 5919 // Called by JNI to handle a touch on a node representing an email address, 5920 // address, or phone number 5921 private void overrideLoading(String url) { 5922 mCallbackProxy.uiOverrideUrlLoading(url); 5923 } 5924 5925 @Override 5926 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5927 // FIXME: If a subwindow is showing find, and the user touches the 5928 // background window, it can steal focus. 5929 if (mFindIsUp) return false; 5930 boolean result = false; 5931 if (inEditingMode()) { 5932 result = mWebTextView.requestFocus(direction, 5933 previouslyFocusedRect); 5934 } else { 5935 result = super.requestFocus(direction, previouslyFocusedRect); 5936 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5937 // For cases such as GMail, where we gain focus from a direction, 5938 // we want to move to the first available link. 5939 // FIXME: If there are no visible links, we may not want to 5940 int fakeKeyDirection = 0; 5941 switch(direction) { 5942 case View.FOCUS_UP: 5943 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5944 break; 5945 case View.FOCUS_DOWN: 5946 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5947 break; 5948 case View.FOCUS_LEFT: 5949 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5950 break; 5951 case View.FOCUS_RIGHT: 5952 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5953 break; 5954 default: 5955 return result; 5956 } 5957 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5958 navHandledKey(fakeKeyDirection, 1, true, 0); 5959 } 5960 } 5961 } 5962 return result; 5963 } 5964 5965 @Override 5966 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5967 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5968 5969 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5970 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5971 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5972 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5973 5974 int measuredHeight = heightSize; 5975 int measuredWidth = widthSize; 5976 5977 // Grab the content size from WebViewCore. 5978 int contentHeight = contentToViewDimension(mContentHeight); 5979 int contentWidth = contentToViewDimension(mContentWidth); 5980 5981// Log.d(LOGTAG, "------- measure " + heightMode); 5982 5983 if (heightMode != MeasureSpec.EXACTLY) { 5984 mHeightCanMeasure = true; 5985 measuredHeight = contentHeight; 5986 if (heightMode == MeasureSpec.AT_MOST) { 5987 // If we are larger than the AT_MOST height, then our height can 5988 // no longer be measured and we should scroll internally. 5989 if (measuredHeight > heightSize) { 5990 measuredHeight = heightSize; 5991 mHeightCanMeasure = false; 5992 } 5993 } 5994 } else { 5995 mHeightCanMeasure = false; 5996 } 5997 if (mNativeClass != 0) { 5998 nativeSetHeightCanMeasure(mHeightCanMeasure); 5999 } 6000 // For the width, always use the given size unless unspecified. 6001 if (widthMode == MeasureSpec.UNSPECIFIED) { 6002 mWidthCanMeasure = true; 6003 measuredWidth = contentWidth; 6004 } else { 6005 mWidthCanMeasure = false; 6006 } 6007 6008 synchronized (this) { 6009 setMeasuredDimension(measuredWidth, measuredHeight); 6010 } 6011 } 6012 6013 @Override 6014 public boolean requestChildRectangleOnScreen(View child, 6015 Rect rect, 6016 boolean immediate) { 6017 rect.offset(child.getLeft() - child.getScrollX(), 6018 child.getTop() - child.getScrollY()); 6019 6020 Rect content = new Rect(viewToContentX(mScrollX), 6021 viewToContentY(mScrollY), 6022 viewToContentX(mScrollX + getWidth() 6023 - getVerticalScrollbarWidth()), 6024 viewToContentY(mScrollY + getViewHeightWithTitle())); 6025 content = nativeSubtractLayers(content); 6026 int screenTop = contentToViewY(content.top); 6027 int screenBottom = contentToViewY(content.bottom); 6028 int height = screenBottom - screenTop; 6029 int scrollYDelta = 0; 6030 6031 if (rect.bottom > screenBottom) { 6032 int oneThirdOfScreenHeight = height / 3; 6033 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6034 // If the rectangle is too tall to fit in the bottom two thirds 6035 // of the screen, place it at the top. 6036 scrollYDelta = rect.top - screenTop; 6037 } else { 6038 // If the rectangle will still fit on screen, we want its 6039 // top to be in the top third of the screen. 6040 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6041 } 6042 } else if (rect.top < screenTop) { 6043 scrollYDelta = rect.top - screenTop; 6044 } 6045 6046 int screenLeft = contentToViewX(content.left); 6047 int screenRight = contentToViewX(content.right); 6048 int width = screenRight - screenLeft; 6049 int scrollXDelta = 0; 6050 6051 if (rect.right > screenRight && rect.left > screenLeft) { 6052 if (rect.width() > width) { 6053 scrollXDelta += (rect.left - screenLeft); 6054 } else { 6055 scrollXDelta += (rect.right - screenRight); 6056 } 6057 } else if (rect.left < screenLeft) { 6058 scrollXDelta -= (screenLeft - rect.left); 6059 } 6060 6061 if ((scrollYDelta | scrollXDelta) != 0) { 6062 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6063 } 6064 6065 return false; 6066 } 6067 6068 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6069 String replace, int newStart, int newEnd) { 6070 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6071 arg.mReplace = replace; 6072 arg.mNewStart = newStart; 6073 arg.mNewEnd = newEnd; 6074 mTextGeneration++; 6075 arg.mTextGeneration = mTextGeneration; 6076 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6077 } 6078 6079 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6080 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6081 arg.mEvent = event; 6082 arg.mCurrentText = currentText; 6083 // Increase our text generation number, and pass it to webcore thread 6084 mTextGeneration++; 6085 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6086 // WebKit's document state is not saved until about to leave the page. 6087 // To make sure the host application, like Browser, has the up to date 6088 // document state when it goes to background, we force to save the 6089 // document state. 6090 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6091 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6092 cursorData(), 1000); 6093 } 6094 6095 /* package */ synchronized WebViewCore getWebViewCore() { 6096 return mWebViewCore; 6097 } 6098 6099 //------------------------------------------------------------------------- 6100 // Methods can be called from a separate thread, like WebViewCore 6101 // If it needs to call the View system, it has to send message. 6102 //------------------------------------------------------------------------- 6103 6104 /** 6105 * General handler to receive message coming from webkit thread 6106 */ 6107 class PrivateHandler extends Handler { 6108 @Override 6109 public void handleMessage(Message msg) { 6110 // exclude INVAL_RECT_MSG_ID since it is frequently output 6111 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6112 if (msg.what >= FIRST_PRIVATE_MSG_ID 6113 && msg.what <= LAST_PRIVATE_MSG_ID) { 6114 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6115 - FIRST_PRIVATE_MSG_ID]); 6116 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6117 && msg.what <= LAST_PACKAGE_MSG_ID) { 6118 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6119 - FIRST_PACKAGE_MSG_ID]); 6120 } else { 6121 Log.v(LOGTAG, Integer.toString(msg.what)); 6122 } 6123 } 6124 if (mWebViewCore == null) { 6125 // after WebView's destroy() is called, skip handling messages. 6126 return; 6127 } 6128 switch (msg.what) { 6129 case REMEMBER_PASSWORD: { 6130 mDatabase.setUsernamePassword( 6131 msg.getData().getString("host"), 6132 msg.getData().getString("username"), 6133 msg.getData().getString("password")); 6134 ((Message) msg.obj).sendToTarget(); 6135 break; 6136 } 6137 case NEVER_REMEMBER_PASSWORD: { 6138 mDatabase.setUsernamePassword( 6139 msg.getData().getString("host"), null, null); 6140 ((Message) msg.obj).sendToTarget(); 6141 break; 6142 } 6143 case PREVENT_DEFAULT_TIMEOUT: { 6144 // if timeout happens, cancel it so that it won't block UI 6145 // to continue handling touch events 6146 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6147 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6148 || (msg.arg1 == MotionEvent.ACTION_MOVE 6149 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6150 cancelWebCoreTouchEvent( 6151 viewToContentX((int) mLastTouchX + mScrollX), 6152 viewToContentY((int) mLastTouchY + mScrollY), 6153 true); 6154 } 6155 break; 6156 } 6157 case SWITCH_TO_SHORTPRESS: { 6158 if (mTouchMode == TOUCH_INIT_MODE) { 6159 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6160 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6161 updateSelection(); 6162 } else { 6163 // set to TOUCH_SHORTPRESS_MODE so that it won't 6164 // trigger double tap any more 6165 mTouchMode = TOUCH_SHORTPRESS_MODE; 6166 } 6167 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6168 mTouchMode = TOUCH_DONE_MODE; 6169 } 6170 break; 6171 } 6172 case SWITCH_TO_LONGPRESS: { 6173 if (inFullScreenMode() || mDeferTouchProcess) { 6174 TouchEventData ted = new TouchEventData(); 6175 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6176 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6177 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6178 // metaState for long press is tricky. Should it be the 6179 // state when the press started or when the press was 6180 // released? Or some intermediary key state? For 6181 // simplicity for now, we don't set it. 6182 ted.mMetaState = 0; 6183 ted.mReprocess = mDeferTouchProcess; 6184 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6185 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6186 mTouchMode = TOUCH_DONE_MODE; 6187 performLongClick(); 6188 } 6189 break; 6190 } 6191 case RELEASE_SINGLE_TAP: { 6192 doShortPress(); 6193 break; 6194 } 6195 case SCROLL_BY_MSG_ID: 6196 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6197 break; 6198 case SYNC_SCROLL_TO_MSG_ID: 6199 if (mUserScroll) { 6200 // if user has scrolled explicitly, don't sync the 6201 // scroll position any more 6202 mUserScroll = false; 6203 break; 6204 } 6205 // fall through 6206 case SCROLL_TO_MSG_ID: 6207 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6208 // if we can't scroll to the exact position due to pin, 6209 // send a message to WebCore to re-scroll when we get a 6210 // new picture 6211 mUserScroll = false; 6212 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6213 msg.arg1, msg.arg2); 6214 } 6215 break; 6216 case SPAWN_SCROLL_TO_MSG_ID: 6217 spawnContentScrollTo(msg.arg1, msg.arg2); 6218 break; 6219 case UPDATE_ZOOM_RANGE: { 6220 WebViewCore.RestoreState restoreState 6221 = (WebViewCore.RestoreState) msg.obj; 6222 // mScrollX contains the new minPrefWidth 6223 updateZoomRange(restoreState, getViewWidth(), 6224 restoreState.mScrollX, false); 6225 break; 6226 } 6227 case NEW_PICTURE_MSG_ID: { 6228 // If we've previously delayed deleting a root 6229 // layer, do it now. 6230 if (mDelayedDeleteRootLayer) { 6231 mDelayedDeleteRootLayer = false; 6232 nativeSetRootLayer(0); 6233 } 6234 WebSettings settings = mWebViewCore.getSettings(); 6235 // called for new content 6236 final int viewWidth = getViewWidth(); 6237 final WebViewCore.DrawData draw = 6238 (WebViewCore.DrawData) msg.obj; 6239 final Point viewSize = draw.mViewPoint; 6240 boolean useWideViewport = settings.getUseWideViewPort(); 6241 WebViewCore.RestoreState restoreState = draw.mRestoreState; 6242 boolean hasRestoreState = restoreState != null; 6243 if (hasRestoreState) { 6244 updateZoomRange(restoreState, viewSize.x, 6245 draw.mMinPrefWidth, true); 6246 if (!mDrawHistory) { 6247 mZoomManager.mInZoomOverview = false; 6248 6249 if (mInitialScaleInPercent > 0) { 6250 setNewZoomScale(mInitialScaleInPercent / 100.0f, 6251 mInitialScaleInPercent != mTextWrapScale * 100, 6252 false); 6253 } else if (restoreState.mViewScale > 0) { 6254 mTextWrapScale = restoreState.mTextWrapScale; 6255 setNewZoomScale(restoreState.mViewScale, false, 6256 false); 6257 } else { 6258 mZoomManager.mInZoomOverview = useWideViewport 6259 && settings.getLoadWithOverviewMode(); 6260 float scale; 6261 if (mZoomManager.mInZoomOverview) { 6262 scale = (float) viewWidth 6263 / DEFAULT_VIEWPORT_WIDTH; 6264 } else { 6265 scale = restoreState.mTextWrapScale; 6266 } 6267 setNewZoomScale(scale, Math.abs(scale 6268 - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT, 6269 false); 6270 } 6271 setContentScrollTo(restoreState.mScrollX, 6272 restoreState.mScrollY); 6273 // As we are on a new page, remove the WebTextView. This 6274 // is necessary for page loads driven by webkit, and in 6275 // particular when the user was on a password field, so 6276 // the WebTextView was visible. 6277 clearTextEntry(false); 6278 // update the zoom buttons as the scale can be changed 6279 mZoomManager.updateZoomPicker(); 6280 } 6281 } 6282 // We update the layout (i.e. request a layout from the 6283 // view system) if the last view size that we sent to 6284 // WebCore matches the view size of the picture we just 6285 // received in the fixed dimension. 6286 final boolean updateLayout = viewSize.x == mLastWidthSent 6287 && viewSize.y == mLastHeightSent; 6288 recordNewContentSize(draw.mWidthHeight.x, 6289 draw.mWidthHeight.y, updateLayout); 6290 if (DebugFlags.WEB_VIEW) { 6291 Rect b = draw.mInvalRegion.getBounds(); 6292 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6293 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6294 } 6295 invalidateContentRect(draw.mInvalRegion.getBounds()); 6296 if (mPictureListener != null) { 6297 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6298 } 6299 if (useWideViewport) { 6300 // limit mZoomOverviewWidth upper bound to 6301 // sMaxViewportWidth so that if the page doesn't behave 6302 // well, the WebView won't go insane. limit the lower 6303 // bound to match the default scale for mobile sites. 6304 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 6305 .max((int) (viewWidth / mDefaultScale), Math 6306 .max(draw.mMinPrefWidth, 6307 draw.mViewPoint.x))); 6308 } 6309 if (!mZoomManager.mMinZoomScaleFixed) { 6310 mZoomManager.mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 6311 } 6312 if (!mDrawHistory && mZoomManager.mInZoomOverview) { 6313 // fit the content width to the current view. Ignore 6314 // the rounding error case. 6315 if (Math.abs((viewWidth * mInvActualScale) 6316 - mZoomOverviewWidth) > 1) { 6317 setNewZoomScale((float) viewWidth 6318 / mZoomOverviewWidth, Math.abs(mActualScale 6319 - mTextWrapScale) < MINIMUM_SCALE_INCREMENT, 6320 false); 6321 } 6322 } 6323 if (draw.mFocusSizeChanged && inEditingMode()) { 6324 mFocusSizeChanged = true; 6325 } 6326 if (hasRestoreState) { 6327 mViewManager.postReadyToDrawAll(); 6328 } 6329 break; 6330 } 6331 case WEBCORE_INITIALIZED_MSG_ID: 6332 // nativeCreate sets mNativeClass to a non-zero value 6333 nativeCreate(msg.arg1); 6334 break; 6335 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6336 // Make sure that the textfield is currently focused 6337 // and representing the same node as the pointer. 6338 if (inEditingMode() && 6339 mWebTextView.isSameTextField(msg.arg1)) { 6340 if (msg.getData().getBoolean("password")) { 6341 Spannable text = (Spannable) mWebTextView.getText(); 6342 int start = Selection.getSelectionStart(text); 6343 int end = Selection.getSelectionEnd(text); 6344 mWebTextView.setInPassword(true); 6345 // Restore the selection, which may have been 6346 // ruined by setInPassword. 6347 Spannable pword = 6348 (Spannable) mWebTextView.getText(); 6349 Selection.setSelection(pword, start, end); 6350 // If the text entry has created more events, ignore 6351 // this one. 6352 } else if (msg.arg2 == mTextGeneration) { 6353 mWebTextView.setTextAndKeepSelection( 6354 (String) msg.obj); 6355 } 6356 } 6357 break; 6358 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6359 displaySoftKeyboard(true); 6360 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 6361 case UPDATE_TEXT_SELECTION_MSG_ID: 6362 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6363 (WebViewCore.TextSelectionData) msg.obj); 6364 break; 6365 case RETURN_LABEL: 6366 if (inEditingMode() 6367 && mWebTextView.isSameTextField(msg.arg1)) { 6368 mWebTextView.setHint((String) msg.obj); 6369 InputMethodManager imm 6370 = InputMethodManager.peekInstance(); 6371 // The hint is propagated to the IME in 6372 // onCreateInputConnection. If the IME is already 6373 // active, restart it so that its hint text is updated. 6374 if (imm != null && imm.isActive(mWebTextView)) { 6375 imm.restartInput(mWebTextView); 6376 } 6377 } 6378 break; 6379 case UNHANDLED_NAV_KEY: 6380 navHandledKey(msg.arg1, 1, false, 0); 6381 break; 6382 case UPDATE_TEXT_ENTRY_MSG_ID: 6383 // this is sent after finishing resize in WebViewCore. Make 6384 // sure the text edit box is still on the screen. 6385 if (inEditingMode() && nativeCursorIsTextInput()) { 6386 mWebTextView.bringIntoView(); 6387 rebuildWebTextView(); 6388 } 6389 break; 6390 case CLEAR_TEXT_ENTRY: 6391 clearTextEntry(false); 6392 break; 6393 case INVAL_RECT_MSG_ID: { 6394 Rect r = (Rect)msg.obj; 6395 if (r == null) { 6396 invalidate(); 6397 } else { 6398 // we need to scale r from content into view coords, 6399 // which viewInvalidate() does for us 6400 viewInvalidate(r.left, r.top, r.right, r.bottom); 6401 } 6402 break; 6403 } 6404 case IMMEDIATE_REPAINT_MSG_ID: { 6405 invalidate(); 6406 break; 6407 } 6408 case SET_ROOT_LAYER_MSG_ID: { 6409 if (0 == msg.arg1) { 6410 // Null indicates deleting the old layer, but 6411 // don't actually do so until we've got the 6412 // new page to display. 6413 mDelayedDeleteRootLayer = true; 6414 } else { 6415 mDelayedDeleteRootLayer = false; 6416 nativeSetRootLayer(msg.arg1); 6417 invalidate(); 6418 } 6419 break; 6420 } 6421 case REQUEST_FORM_DATA: 6422 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6423 if (mWebTextView.isSameTextField(msg.arg1)) { 6424 mWebTextView.setAdapterCustom(adapter); 6425 } 6426 break; 6427 case RESUME_WEBCORE_PRIORITY: 6428 WebViewCore.resumePriority(); 6429 WebViewCore.resumeUpdatePicture(mWebViewCore); 6430 break; 6431 6432 case LONG_PRESS_CENTER: 6433 // as this is shared by keydown and trackballdown, reset all 6434 // the states 6435 mGotCenterDown = false; 6436 mTrackballDown = false; 6437 performLongClick(); 6438 break; 6439 6440 case WEBCORE_NEED_TOUCH_EVENTS: 6441 mForwardTouchEvents = (msg.arg1 != 0); 6442 break; 6443 6444 case PREVENT_TOUCH_ID: 6445 if (inFullScreenMode()) { 6446 break; 6447 } 6448 if (msg.obj == null) { 6449 if (msg.arg1 == MotionEvent.ACTION_DOWN 6450 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6451 // if prevent default is called from WebCore, UI 6452 // will not handle the rest of the touch events any 6453 // more. 6454 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6455 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6456 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6457 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6458 // the return for the first ACTION_MOVE will decide 6459 // whether UI will handle touch or not. Currently no 6460 // support for alternating prevent default 6461 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6462 : PREVENT_DEFAULT_NO; 6463 } 6464 } else if (msg.arg2 == 0) { 6465 // prevent default is not called in WebCore, so the 6466 // message needs to be reprocessed in UI 6467 TouchEventData ted = (TouchEventData) msg.obj; 6468 switch (ted.mAction) { 6469 case MotionEvent.ACTION_DOWN: 6470 mLastDeferTouchX = contentToViewX(ted.mX) 6471 - mScrollX; 6472 mLastDeferTouchY = contentToViewY(ted.mY) 6473 - mScrollY; 6474 mDeferTouchMode = TOUCH_INIT_MODE; 6475 break; 6476 case MotionEvent.ACTION_MOVE: { 6477 // no snapping in defer process 6478 int x = contentToViewX(ted.mX) - mScrollX; 6479 int y = contentToViewY(ted.mY) - mScrollY; 6480 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6481 mDeferTouchMode = TOUCH_DRAG_MODE; 6482 mLastDeferTouchX = x; 6483 mLastDeferTouchY = y; 6484 startDrag(); 6485 } 6486 int deltaX = pinLocX((int) (mScrollX 6487 + mLastDeferTouchX - x)) 6488 - mScrollX; 6489 int deltaY = pinLocY((int) (mScrollY 6490 + mLastDeferTouchY - y)) 6491 - mScrollY; 6492 doDrag(deltaX, deltaY); 6493 if (deltaX != 0) mLastDeferTouchX = x; 6494 if (deltaY != 0) mLastDeferTouchY = y; 6495 break; 6496 } 6497 case MotionEvent.ACTION_UP: 6498 case MotionEvent.ACTION_CANCEL: 6499 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6500 // no fling in defer process 6501 WebViewCore.resumePriority(); 6502 WebViewCore.resumeUpdatePicture(mWebViewCore); 6503 } 6504 mDeferTouchMode = TOUCH_DONE_MODE; 6505 break; 6506 case WebViewCore.ACTION_DOUBLETAP: 6507 // doDoubleTap() needs mLastTouchX/Y as anchor 6508 mLastTouchX = contentToViewX(ted.mX) - mScrollX; 6509 mLastTouchY = contentToViewY(ted.mY) - mScrollY; 6510 doDoubleTap(); 6511 mDeferTouchMode = TOUCH_DONE_MODE; 6512 break; 6513 case WebViewCore.ACTION_LONGPRESS: 6514 HitTestResult hitTest = getHitTestResult(); 6515 if (hitTest != null && hitTest.mType 6516 != HitTestResult.UNKNOWN_TYPE) { 6517 performLongClick(); 6518 } 6519 mDeferTouchMode = TOUCH_DONE_MODE; 6520 break; 6521 } 6522 } 6523 break; 6524 6525 case REQUEST_KEYBOARD: 6526 if (msg.arg1 == 0) { 6527 hideSoftKeyboard(); 6528 } else { 6529 displaySoftKeyboard(false); 6530 } 6531 break; 6532 6533 case FIND_AGAIN: 6534 // Ignore if find has been dismissed. 6535 if (mFindIsUp) { 6536 findAll(mLastFind); 6537 } 6538 break; 6539 6540 case DRAG_HELD_MOTIONLESS: 6541 mHeldMotionless = MOTIONLESS_TRUE; 6542 invalidate(); 6543 // fall through to keep scrollbars awake 6544 6545 case AWAKEN_SCROLL_BARS: 6546 if (mTouchMode == TOUCH_DRAG_MODE 6547 && mHeldMotionless == MOTIONLESS_TRUE) { 6548 awakenScrollBars(ViewConfiguration 6549 .getScrollDefaultDelay(), false); 6550 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6551 .obtainMessage(AWAKEN_SCROLL_BARS), 6552 ViewConfiguration.getScrollDefaultDelay()); 6553 } 6554 break; 6555 6556 case DO_MOTION_UP: 6557 doMotionUp(msg.arg1, msg.arg2); 6558 break; 6559 6560 case SHOW_FULLSCREEN: { 6561 View view = (View) msg.obj; 6562 int npp = msg.arg1; 6563 6564 if (mFullScreenHolder != null) { 6565 Log.w(LOGTAG, "Should not have another full screen."); 6566 mFullScreenHolder.dismiss(); 6567 } 6568 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 6569 mFullScreenHolder.setContentView(view); 6570 mFullScreenHolder.setCancelable(false); 6571 mFullScreenHolder.setCanceledOnTouchOutside(false); 6572 mFullScreenHolder.show(); 6573 6574 break; 6575 } 6576 case HIDE_FULLSCREEN: 6577 if (inFullScreenMode()) { 6578 mFullScreenHolder.dismiss(); 6579 mFullScreenHolder = null; 6580 } 6581 break; 6582 6583 case DOM_FOCUS_CHANGED: 6584 if (inEditingMode()) { 6585 nativeClearCursor(); 6586 rebuildWebTextView(); 6587 } 6588 break; 6589 6590 case SHOW_RECT_MSG_ID: { 6591 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6592 int x = mScrollX; 6593 int left = contentToViewX(data.mLeft); 6594 int width = contentToViewDimension(data.mWidth); 6595 int maxWidth = contentToViewDimension(data.mContentWidth); 6596 int viewWidth = getViewWidth(); 6597 if (width < viewWidth) { 6598 // center align 6599 x += left + width / 2 - mScrollX - viewWidth / 2; 6600 } else { 6601 x += (int) (left + data.mXPercentInDoc * width 6602 - mScrollX - data.mXPercentInView * viewWidth); 6603 } 6604 if (DebugFlags.WEB_VIEW) { 6605 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6606 width + ",maxWidth=" + maxWidth + 6607 ",viewWidth=" + viewWidth + ",x=" 6608 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6609 ",xPercentInView=" + data.mXPercentInView+ ")"); 6610 } 6611 // use the passing content width to cap x as the current 6612 // mContentWidth may not be updated yet 6613 x = Math.max(0, 6614 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6615 int top = contentToViewY(data.mTop); 6616 int height = contentToViewDimension(data.mHeight); 6617 int maxHeight = contentToViewDimension(data.mContentHeight); 6618 int viewHeight = getViewHeight(); 6619 int y = (int) (top + data.mYPercentInDoc * height - 6620 data.mYPercentInView * viewHeight); 6621 if (DebugFlags.WEB_VIEW) { 6622 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6623 height + ",maxHeight=" + maxHeight + 6624 ",viewHeight=" + viewHeight + ",y=" 6625 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6626 ",yPercentInView=" + data.mYPercentInView+ ")"); 6627 } 6628 // use the passing content height to cap y as the current 6629 // mContentHeight may not be updated yet 6630 y = Math.max(0, 6631 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6632 // We need to take into account the visible title height 6633 // when scrolling since y is an absolute view position. 6634 y = Math.max(0, y - getVisibleTitleHeight()); 6635 scrollTo(x, y); 6636 } 6637 break; 6638 6639 case CENTER_FIT_RECT: 6640 Rect r = (Rect)msg.obj; 6641 mZoomManager.mInZoomOverview = false; 6642 centerFitRect(r.left, r.top, r.width(), r.height()); 6643 break; 6644 6645 case SET_SCROLLBAR_MODES: 6646 mHorizontalScrollBarMode = msg.arg1; 6647 mVerticalScrollBarMode = msg.arg2; 6648 break; 6649 6650 case SELECTION_STRING_CHANGED: 6651 if (mAccessibilityInjector != null) { 6652 String selectionString = (String) msg.obj; 6653 mAccessibilityInjector.onSelectionStringChange(selectionString); 6654 } 6655 break; 6656 6657 default: 6658 super.handleMessage(msg); 6659 break; 6660 } 6661 } 6662 } 6663 6664 /** 6665 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 6666 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 6667 */ 6668 private void updateTextSelectionFromMessage(int nodePointer, 6669 int textGeneration, WebViewCore.TextSelectionData data) { 6670 if (inEditingMode() 6671 && mWebTextView.isSameTextField(nodePointer) 6672 && textGeneration == mTextGeneration) { 6673 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 6674 } 6675 } 6676 6677 // Class used to use a dropdown for a <select> element 6678 private class InvokeListBox implements Runnable { 6679 // Whether the listbox allows multiple selection. 6680 private boolean mMultiple; 6681 // Passed in to a list with multiple selection to tell 6682 // which items are selected. 6683 private int[] mSelectedArray; 6684 // Passed in to a list with single selection to tell 6685 // where the initial selection is. 6686 private int mSelection; 6687 6688 private Container[] mContainers; 6689 6690 // Need these to provide stable ids to my ArrayAdapter, 6691 // which normally does not have stable ids. (Bug 1250098) 6692 private class Container extends Object { 6693 /** 6694 * Possible values for mEnabled. Keep in sync with OptionStatus in 6695 * WebViewCore.cpp 6696 */ 6697 final static int OPTGROUP = -1; 6698 final static int OPTION_DISABLED = 0; 6699 final static int OPTION_ENABLED = 1; 6700 6701 String mString; 6702 int mEnabled; 6703 int mId; 6704 6705 public String toString() { 6706 return mString; 6707 } 6708 } 6709 6710 /** 6711 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6712 * and allow filtering. 6713 */ 6714 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6715 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6716 super(context, 6717 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6718 com.android.internal.R.layout.select_dialog_singlechoice, 6719 objects); 6720 } 6721 6722 @Override 6723 public View getView(int position, View convertView, 6724 ViewGroup parent) { 6725 // Always pass in null so that we will get a new CheckedTextView 6726 // Otherwise, an item which was previously used as an <optgroup> 6727 // element (i.e. has no check), could get used as an <option> 6728 // element, which needs a checkbox/radio, but it would not have 6729 // one. 6730 convertView = super.getView(position, null, parent); 6731 Container c = item(position); 6732 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6733 // ListView does not draw dividers between disabled and 6734 // enabled elements. Use a LinearLayout to provide dividers 6735 LinearLayout layout = new LinearLayout(mContext); 6736 layout.setOrientation(LinearLayout.VERTICAL); 6737 if (position > 0) { 6738 View dividerTop = new View(mContext); 6739 dividerTop.setBackgroundResource( 6740 android.R.drawable.divider_horizontal_bright); 6741 layout.addView(dividerTop); 6742 } 6743 6744 if (Container.OPTGROUP == c.mEnabled) { 6745 // Currently select_dialog_multichoice and 6746 // select_dialog_singlechoice are CheckedTextViews. If 6747 // that changes, the class cast will no longer be valid. 6748 Assert.assertTrue( 6749 convertView instanceof CheckedTextView); 6750 ((CheckedTextView) convertView).setCheckMarkDrawable( 6751 null); 6752 } else { 6753 // c.mEnabled == Container.OPTION_DISABLED 6754 // Draw the disabled element in a disabled state. 6755 convertView.setEnabled(false); 6756 } 6757 6758 layout.addView(convertView); 6759 if (position < getCount() - 1) { 6760 View dividerBottom = new View(mContext); 6761 dividerBottom.setBackgroundResource( 6762 android.R.drawable.divider_horizontal_bright); 6763 layout.addView(dividerBottom); 6764 } 6765 return layout; 6766 } 6767 return convertView; 6768 } 6769 6770 @Override 6771 public boolean hasStableIds() { 6772 // AdapterView's onChanged method uses this to determine whether 6773 // to restore the old state. Return false so that the old (out 6774 // of date) state does not replace the new, valid state. 6775 return false; 6776 } 6777 6778 private Container item(int position) { 6779 if (position < 0 || position >= getCount()) { 6780 return null; 6781 } 6782 return (Container) getItem(position); 6783 } 6784 6785 @Override 6786 public long getItemId(int position) { 6787 Container item = item(position); 6788 if (item == null) { 6789 return -1; 6790 } 6791 return item.mId; 6792 } 6793 6794 @Override 6795 public boolean areAllItemsEnabled() { 6796 return false; 6797 } 6798 6799 @Override 6800 public boolean isEnabled(int position) { 6801 Container item = item(position); 6802 if (item == null) { 6803 return false; 6804 } 6805 return Container.OPTION_ENABLED == item.mEnabled; 6806 } 6807 } 6808 6809 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6810 mMultiple = true; 6811 mSelectedArray = selected; 6812 6813 int length = array.length; 6814 mContainers = new Container[length]; 6815 for (int i = 0; i < length; i++) { 6816 mContainers[i] = new Container(); 6817 mContainers[i].mString = array[i]; 6818 mContainers[i].mEnabled = enabled[i]; 6819 mContainers[i].mId = i; 6820 } 6821 } 6822 6823 private InvokeListBox(String[] array, int[] enabled, int selection) { 6824 mSelection = selection; 6825 mMultiple = false; 6826 6827 int length = array.length; 6828 mContainers = new Container[length]; 6829 for (int i = 0; i < length; i++) { 6830 mContainers[i] = new Container(); 6831 mContainers[i].mString = array[i]; 6832 mContainers[i].mEnabled = enabled[i]; 6833 mContainers[i].mId = i; 6834 } 6835 } 6836 6837 /* 6838 * Whenever the data set changes due to filtering, this class ensures 6839 * that the checked item remains checked. 6840 */ 6841 private class SingleDataSetObserver extends DataSetObserver { 6842 private long mCheckedId; 6843 private ListView mListView; 6844 private Adapter mAdapter; 6845 6846 /* 6847 * Create a new observer. 6848 * @param id The ID of the item to keep checked. 6849 * @param l ListView for getting and clearing the checked states 6850 * @param a Adapter for getting the IDs 6851 */ 6852 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6853 mCheckedId = id; 6854 mListView = l; 6855 mAdapter = a; 6856 } 6857 6858 public void onChanged() { 6859 // The filter may have changed which item is checked. Find the 6860 // item that the ListView thinks is checked. 6861 int position = mListView.getCheckedItemPosition(); 6862 long id = mAdapter.getItemId(position); 6863 if (mCheckedId != id) { 6864 // Clear the ListView's idea of the checked item, since 6865 // it is incorrect 6866 mListView.clearChoices(); 6867 // Search for mCheckedId. If it is in the filtered list, 6868 // mark it as checked 6869 int count = mAdapter.getCount(); 6870 for (int i = 0; i < count; i++) { 6871 if (mAdapter.getItemId(i) == mCheckedId) { 6872 mListView.setItemChecked(i, true); 6873 break; 6874 } 6875 } 6876 } 6877 } 6878 6879 public void onInvalidate() {} 6880 } 6881 6882 public void run() { 6883 final ListView listView = (ListView) LayoutInflater.from(mContext) 6884 .inflate(com.android.internal.R.layout.select_dialog, null); 6885 final MyArrayListAdapter adapter = new 6886 MyArrayListAdapter(mContext, mContainers, mMultiple); 6887 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6888 .setView(listView).setCancelable(true) 6889 .setInverseBackgroundForced(true); 6890 6891 if (mMultiple) { 6892 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6893 public void onClick(DialogInterface dialog, int which) { 6894 mWebViewCore.sendMessage( 6895 EventHub.LISTBOX_CHOICES, 6896 adapter.getCount(), 0, 6897 listView.getCheckedItemPositions()); 6898 }}); 6899 b.setNegativeButton(android.R.string.cancel, 6900 new DialogInterface.OnClickListener() { 6901 public void onClick(DialogInterface dialog, int which) { 6902 mWebViewCore.sendMessage( 6903 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6904 }}); 6905 } 6906 final AlertDialog dialog = b.create(); 6907 listView.setAdapter(adapter); 6908 listView.setFocusableInTouchMode(true); 6909 // There is a bug (1250103) where the checks in a ListView with 6910 // multiple items selected are associated with the positions, not 6911 // the ids, so the items do not properly retain their checks when 6912 // filtered. Do not allow filtering on multiple lists until 6913 // that bug is fixed. 6914 6915 listView.setTextFilterEnabled(!mMultiple); 6916 if (mMultiple) { 6917 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6918 int length = mSelectedArray.length; 6919 for (int i = 0; i < length; i++) { 6920 listView.setItemChecked(mSelectedArray[i], true); 6921 } 6922 } else { 6923 listView.setOnItemClickListener(new OnItemClickListener() { 6924 public void onItemClick(AdapterView parent, View v, 6925 int position, long id) { 6926 mWebViewCore.sendMessage( 6927 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6928 dialog.dismiss(); 6929 } 6930 }); 6931 if (mSelection != -1) { 6932 listView.setSelection(mSelection); 6933 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6934 listView.setItemChecked(mSelection, true); 6935 DataSetObserver observer = new SingleDataSetObserver( 6936 adapter.getItemId(mSelection), listView, adapter); 6937 adapter.registerDataSetObserver(observer); 6938 } 6939 } 6940 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6941 public void onCancel(DialogInterface dialog) { 6942 mWebViewCore.sendMessage( 6943 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6944 } 6945 }); 6946 dialog.show(); 6947 } 6948 } 6949 6950 /* 6951 * Request a dropdown menu for a listbox with multiple selection. 6952 * 6953 * @param array Labels for the listbox. 6954 * @param enabledArray State for each element in the list. See static 6955 * integers in Container class. 6956 * @param selectedArray Which positions are initally selected. 6957 */ 6958 void requestListBox(String[] array, int[] enabledArray, int[] 6959 selectedArray) { 6960 mPrivateHandler.post( 6961 new InvokeListBox(array, enabledArray, selectedArray)); 6962 } 6963 6964 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6965 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6966 if (restoreState.mMinScale == 0) { 6967 if (restoreState.mMobileSite) { 6968 if (minPrefWidth > Math.max(0, viewWidth)) { 6969 mZoomManager.mMinZoomScale = (float) viewWidth / minPrefWidth; 6970 mZoomManager.mMinZoomScaleFixed = false; 6971 if (updateZoomOverview) { 6972 WebSettings settings = getSettings(); 6973 mZoomManager.mInZoomOverview = settings.getUseWideViewPort() && 6974 settings.getLoadWithOverviewMode(); 6975 } 6976 } else { 6977 mZoomManager.mMinZoomScale = restoreState.mDefaultScale; 6978 mZoomManager.mMinZoomScaleFixed = true; 6979 } 6980 } else { 6981 mZoomManager.mMinZoomScale = mZoomManager.DEFAULT_MIN_ZOOM_SCALE; 6982 mZoomManager.mMinZoomScaleFixed = false; 6983 } 6984 } else { 6985 mZoomManager.mMinZoomScale = restoreState.mMinScale; 6986 mZoomManager.mMinZoomScaleFixed = true; 6987 } 6988 if (restoreState.mMaxScale == 0) { 6989 mZoomManager.mMaxZoomScale = mZoomManager.DEFAULT_MAX_ZOOM_SCALE; 6990 } else { 6991 mZoomManager.mMaxZoomScale = restoreState.mMaxScale; 6992 } 6993 } 6994 6995 /* 6996 * Request a dropdown menu for a listbox with single selection or a single 6997 * <select> element. 6998 * 6999 * @param array Labels for the listbox. 7000 * @param enabledArray State for each element in the list. See static 7001 * integers in Container class. 7002 * @param selection Which position is initally selected. 7003 */ 7004 void requestListBox(String[] array, int[] enabledArray, int selection) { 7005 mPrivateHandler.post( 7006 new InvokeListBox(array, enabledArray, selection)); 7007 } 7008 7009 // called by JNI 7010 private void sendMoveFocus(int frame, int node) { 7011 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7012 new WebViewCore.CursorData(frame, node, 0, 0)); 7013 } 7014 7015 // called by JNI 7016 private void sendMoveMouse(int frame, int node, int x, int y) { 7017 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7018 new WebViewCore.CursorData(frame, node, x, y)); 7019 } 7020 7021 /* 7022 * Send a mouse move event to the webcore thread. 7023 * 7024 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7025 * which wants key events, but it is not the focus. This 7026 * will make the visual appear as though nothing is in 7027 * focus. Remove the WebTextView, if present, and stop 7028 * drawing the blinking caret. 7029 * called by JNI 7030 */ 7031 private void sendMoveMouseIfLatest(boolean removeFocus) { 7032 if (removeFocus) { 7033 clearTextEntry(true); 7034 } 7035 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7036 cursorData()); 7037 } 7038 7039 // called by JNI 7040 private void sendMotionUp(int touchGeneration, 7041 int frame, int node, int x, int y) { 7042 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7043 touchUpData.mMoveGeneration = touchGeneration; 7044 touchUpData.mFrame = frame; 7045 touchUpData.mNode = node; 7046 touchUpData.mX = x; 7047 touchUpData.mY = y; 7048 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7049 } 7050 7051 7052 private int getScaledMaxXScroll() { 7053 int width; 7054 if (mHeightCanMeasure == false) { 7055 width = getViewWidth() / 4; 7056 } else { 7057 Rect visRect = new Rect(); 7058 calcOurVisibleRect(visRect); 7059 width = visRect.width() / 2; 7060 } 7061 // FIXME the divisor should be retrieved from somewhere 7062 return viewToContentX(width); 7063 } 7064 7065 private int getScaledMaxYScroll() { 7066 int height; 7067 if (mHeightCanMeasure == false) { 7068 height = getViewHeight() / 4; 7069 } else { 7070 Rect visRect = new Rect(); 7071 calcOurVisibleRect(visRect); 7072 height = visRect.height() / 2; 7073 } 7074 // FIXME the divisor should be retrieved from somewhere 7075 // the closest thing today is hard-coded into ScrollView.java 7076 // (from ScrollView.java, line 363) int maxJump = height/2; 7077 return Math.round(height * mInvActualScale); 7078 } 7079 7080 /** 7081 * Called by JNI to invalidate view 7082 */ 7083 private void viewInvalidate() { 7084 invalidate(); 7085 } 7086 7087 /** 7088 * Pass the key directly to the page. This assumes that 7089 * nativePageShouldHandleShiftAndArrows() returned true. 7090 */ 7091 private void letPageHandleNavKey(int keyCode, long time, boolean down) { 7092 int keyEventAction; 7093 int eventHubAction; 7094 if (down) { 7095 keyEventAction = KeyEvent.ACTION_DOWN; 7096 eventHubAction = EventHub.KEY_DOWN; 7097 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7098 } else { 7099 keyEventAction = KeyEvent.ACTION_UP; 7100 eventHubAction = EventHub.KEY_UP; 7101 } 7102 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7103 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7104 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7105 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7106 , 0, 0, 0); 7107 mWebViewCore.sendMessage(eventHubAction, event); 7108 } 7109 7110 // return true if the key was handled 7111 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7112 long time) { 7113 if (mNativeClass == 0) { 7114 return false; 7115 } 7116 mLastCursorTime = time; 7117 mLastCursorBounds = nativeGetCursorRingBounds(); 7118 boolean keyHandled 7119 = nativeMoveCursor(keyCode, count, noScroll) == false; 7120 if (DebugFlags.WEB_VIEW) { 7121 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7122 + " mLastCursorTime=" + mLastCursorTime 7123 + " handled=" + keyHandled); 7124 } 7125 if (keyHandled == false || mHeightCanMeasure == false) { 7126 return keyHandled; 7127 } 7128 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7129 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7130 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7131 Rect visRect = new Rect(); 7132 calcOurVisibleRect(visRect); 7133 Rect outset = new Rect(visRect); 7134 int maxXScroll = visRect.width() / 2; 7135 int maxYScroll = visRect.height() / 2; 7136 outset.inset(-maxXScroll, -maxYScroll); 7137 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7138 return keyHandled; 7139 } 7140 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7141 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7142 maxXScroll); 7143 if (maxH > 0) { 7144 pinScrollBy(maxH, 0, true, 0); 7145 } else { 7146 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7147 -maxXScroll); 7148 if (maxH < 0) { 7149 pinScrollBy(maxH, 0, true, 0); 7150 } 7151 } 7152 if (mLastCursorBounds.isEmpty()) return keyHandled; 7153 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7154 return keyHandled; 7155 } 7156 if (DebugFlags.WEB_VIEW) { 7157 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7158 + contentCursorRingBounds); 7159 } 7160 requestRectangleOnScreen(viewCursorRingBounds); 7161 mUserScroll = true; 7162 return keyHandled; 7163 } 7164 7165 /** 7166 * Set the background color. It's white by default. Pass 7167 * zero to make the view transparent. 7168 * @param color the ARGB color described by Color.java 7169 */ 7170 public void setBackgroundColor(int color) { 7171 mBackgroundColor = color; 7172 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7173 } 7174 7175 public void debugDump() { 7176 nativeDebugDump(); 7177 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7178 } 7179 7180 /** 7181 * Draw the HTML page into the specified canvas. This call ignores any 7182 * view-specific zoom, scroll offset, or other changes. It does not draw 7183 * any view-specific chrome, such as progress or URL bars. 7184 * 7185 * @hide only needs to be accessible to Browser and testing 7186 */ 7187 public void drawPage(Canvas canvas) { 7188 mWebViewCore.drawContentPicture(canvas, 0, false, false); 7189 } 7190 7191 /** 7192 * Set the time to wait between passing touches to WebCore. See also the 7193 * TOUCH_SENT_INTERVAL member for further discussion. 7194 * 7195 * @hide This is only used by the DRT test application. 7196 */ 7197 public void setTouchInterval(int interval) { 7198 mCurrentTouchInterval = interval; 7199 } 7200 7201 /** 7202 * Update our cache with updatedText. 7203 * @param updatedText The new text to put in our cache. 7204 */ 7205 /* package */ void updateCachedTextfield(String updatedText) { 7206 // Also place our generation number so that when we look at the cache 7207 // we recognize that it is up to date. 7208 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7209 } 7210 7211 private native int nativeCacheHitFramePointer(); 7212 private native Rect nativeCacheHitNodeBounds(); 7213 private native int nativeCacheHitNodePointer(); 7214 /* package */ native void nativeClearCursor(); 7215 private native void nativeCreate(int ptr); 7216 private native int nativeCursorFramePointer(); 7217 private native Rect nativeCursorNodeBounds(); 7218 private native int nativeCursorNodePointer(); 7219 /* package */ native boolean nativeCursorMatchesFocus(); 7220 private native boolean nativeCursorIntersects(Rect visibleRect); 7221 private native boolean nativeCursorIsAnchor(); 7222 private native boolean nativeCursorIsTextInput(); 7223 private native Point nativeCursorPosition(); 7224 private native String nativeCursorText(); 7225 /** 7226 * Returns true if the native cursor node says it wants to handle key events 7227 * (ala plugins). This can only be called if mNativeClass is non-zero! 7228 */ 7229 private native boolean nativeCursorWantsKeyEvents(); 7230 private native void nativeDebugDump(); 7231 private native void nativeDestroy(); 7232 private native boolean nativeEvaluateLayersAnimations(); 7233 private native void nativeDrawExtras(Canvas canvas, int extra); 7234 private native void nativeDumpDisplayTree(String urlOrNull); 7235 private native int nativeFindAll(String findLower, String findUpper); 7236 private native void nativeFindNext(boolean forward); 7237 /* package */ native int nativeFocusCandidateFramePointer(); 7238 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7239 /* package */ native boolean nativeFocusCandidateIsPassword(); 7240 private native boolean nativeFocusCandidateIsRtlText(); 7241 private native boolean nativeFocusCandidateIsTextInput(); 7242 /* package */ native int nativeFocusCandidateMaxLength(); 7243 /* package */ native String nativeFocusCandidateName(); 7244 private native Rect nativeFocusCandidateNodeBounds(); 7245 /* package */ native int nativeFocusCandidatePointer(); 7246 private native String nativeFocusCandidateText(); 7247 private native int nativeFocusCandidateTextSize(); 7248 /** 7249 * Returns an integer corresponding to WebView.cpp::type. 7250 * See WebTextView.setType() 7251 */ 7252 private native int nativeFocusCandidateType(); 7253 private native boolean nativeFocusIsPlugin(); 7254 private native Rect nativeFocusNodeBounds(); 7255 /* package */ native int nativeFocusNodePointer(); 7256 private native Rect nativeGetCursorRingBounds(); 7257 private native String nativeGetSelection(); 7258 private native boolean nativeHasCursorNode(); 7259 private native boolean nativeHasFocusNode(); 7260 private native void nativeHideCursor(); 7261 private native String nativeImageURI(int x, int y); 7262 private native void nativeInstrumentReport(); 7263 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7264 // return true if the page has been scrolled 7265 private native boolean nativeMotionUp(int x, int y, int slop); 7266 // returns false if it handled the key 7267 private native boolean nativeMoveCursor(int keyCode, int count, 7268 boolean noScroll); 7269 private native int nativeMoveGeneration(); 7270 private native void nativeMoveSelection(int x, int y, 7271 boolean extendSelection); 7272 /** 7273 * @return true if the page should get the shift and arrow keys, rather 7274 * than select text/navigation. 7275 * 7276 * If the focus is a plugin, or if the focus and cursor match and are 7277 * a contentEditable element, then the page should handle these keys. 7278 */ 7279 private native boolean nativePageShouldHandleShiftAndArrows(); 7280 private native boolean nativePointInNavCache(int x, int y, int slop); 7281 // Like many other of our native methods, you must make sure that 7282 // mNativeClass is not null before calling this method. 7283 private native void nativeRecordButtons(boolean focused, 7284 boolean pressed, boolean invalidate); 7285 private native void nativeSelectBestAt(Rect rect); 7286 private native int nativeFindIndex(); 7287 private native void nativeSetFindIsEmpty(); 7288 private native void nativeSetFindIsUp(boolean isUp); 7289 private native void nativeSetFollowedLink(boolean followed); 7290 private native void nativeSetHeightCanMeasure(boolean measure); 7291 private native void nativeSetRootLayer(int layer); 7292 private native void nativeSetSelectionPointer(boolean set, 7293 float scale, int x, int y, boolean extendSelection); 7294 private native void nativeSetSelectionRegion(boolean set); 7295 private native Rect nativeSubtractLayers(Rect content); 7296 private native int nativeTextGeneration(); 7297 // Never call this version except by updateCachedTextfield(String) - 7298 // we always want to pass in our generation number. 7299 private native void nativeUpdateCachedTextfield(String updatedText, 7300 int generation); 7301 // return NO_LEFTEDGE means failure. 7302 private static final int NO_LEFTEDGE = -1; 7303 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 7304} 7305