WebView.java revision 41d5e93bbdff5dc6383ebd9391e3f1c492dee215
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.Context; 24import android.content.DialogInterface; 25import android.content.IntentFilter; 26import android.content.DialogInterface.OnCancelListener; 27import android.content.pm.PackageInfo; 28import android.content.pm.PackageManager; 29import android.content.Intent; 30import android.database.DataSetObserver; 31import android.graphics.Bitmap; 32import android.graphics.Canvas; 33import android.graphics.Color; 34import android.graphics.CornerPathEffect; 35import android.graphics.DrawFilter; 36import android.graphics.Interpolator; 37import android.graphics.Paint; 38import android.graphics.PaintFlagsDrawFilter; 39import android.graphics.Picture; 40import android.graphics.Point; 41import android.graphics.Rect; 42import android.graphics.RectF; 43import android.graphics.Region; 44import android.graphics.drawable.Drawable; 45import android.net.Uri; 46import android.net.http.SslCertificate; 47import android.os.AsyncTask; 48import android.os.Bundle; 49import android.os.Handler; 50import android.os.Message; 51import android.os.SystemClock; 52import android.speech.tts.TextToSpeech; 53import android.text.Selection; 54import android.text.Spannable; 55import android.util.AttributeSet; 56import android.util.EventLog; 57import android.util.Log; 58import android.util.TypedValue; 59import android.view.Gravity; 60import android.view.KeyEvent; 61import android.view.LayoutInflater; 62import android.view.MotionEvent; 63import android.view.ScaleGestureDetector; 64import android.view.SoundEffectConstants; 65import android.view.VelocityTracker; 66import android.view.View; 67import android.view.ViewConfiguration; 68import android.view.ViewGroup; 69import android.view.ViewTreeObserver; 70import android.view.accessibility.AccessibilityManager; 71import android.view.inputmethod.EditorInfo; 72import android.view.inputmethod.InputConnection; 73import android.view.inputmethod.InputMethodManager; 74import android.webkit.WebTextView.AutoCompleteAdapter; 75import android.webkit.WebViewCore.EventHub; 76import android.webkit.WebViewCore.TouchEventData; 77import android.webkit.WebViewCore.TouchHighlightData; 78import android.widget.AbsoluteLayout; 79import android.widget.Adapter; 80import android.widget.AdapterView; 81import android.widget.AdapterView.OnItemClickListener; 82import android.widget.ArrayAdapter; 83import android.widget.CheckedTextView; 84import android.widget.LinearLayout; 85import android.widget.ListView; 86import android.widget.Scroller; 87import android.widget.Toast; 88 89import junit.framework.Assert; 90 91import java.io.File; 92import java.io.FileInputStream; 93import java.io.FileNotFoundException; 94import java.io.FileOutputStream; 95import java.io.IOException; 96import java.io.InputStreamReader; 97import java.net.URLDecoder; 98import java.util.ArrayList; 99import java.util.HashMap; 100import java.util.HashSet; 101import java.util.List; 102import java.util.Map; 103import java.util.Set; 104 105/** 106 * <p>A View that displays web pages. This class is the basis upon which you 107 * can roll your own web browser or simply display some online content within your Activity. 108 * It uses the WebKit rendering engine to display 109 * web pages and includes methods to navigate forward and backward 110 * through a history, zoom in and out, perform text searches and more.</p> 111 * <p>To enable the built-in zoom, set 112 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 113 * (introduced in API version 3). 114 * <p>Note that, in order for your Activity to access the Internet and load web pages 115 * in a WebView, you must add the {@code INTERNET} permissions to your 116 * Android Manifest file:</p> 117 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 118 * 119 * <p>This must be a child of the <a 120 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 121 * element.</p> 122 * 123 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 124 * tutorial</a>.</p> 125 * 126 * <h3>Basic usage</h3> 127 * 128 * <p>By default, a WebView provides no browser-like widgets, does not 129 * enable JavaScript and web page errors are ignored. If your goal is only 130 * to display some HTML as a part of your UI, this is probably fine; 131 * the user won't need to interact with the web page beyond reading 132 * it, and the web page won't need to interact with the user. If you 133 * actually want a full-blown web browser, then you probably want to 134 * invoke the Browser application with a URL Intent rather than show it 135 * with a WebView. For example: 136 * <pre> 137 * Uri uri = Uri.parse("http://www.example.com"); 138 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 139 * startActivity(intent); 140 * </pre> 141 * <p>See {@link android.content.Intent} for more information.</p> 142 * 143 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 144 * or set the entire Activity window as a WebView during {@link 145 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 146 * <pre class="prettyprint"> 147 * WebView webview = new WebView(this); 148 * setContentView(webview); 149 * </pre> 150 * 151 * <p>Then load the desired web page:</p> 152 * <pre> 153 * // Simplest usage: note that an exception will NOT be thrown 154 * // if there is an error loading this page (see below). 155 * webview.loadUrl("http://slashdot.org/"); 156 * 157 * // OR, you can also load from an HTML string: 158 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 159 * webview.loadData(summary, "text/html", "utf-8"); 160 * // ... although note that there are restrictions on what this HTML can do. 161 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 162 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 163 * </pre> 164 * 165 * <p>A WebView has several customization points where you can add your 166 * own behavior. These are:</p> 167 * 168 * <ul> 169 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 170 * This class is called when something that might impact a 171 * browser UI happens, for instance, progress updates and 172 * JavaScript alerts are sent here (see <a 173 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 174 * </li> 175 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 176 * It will be called when things happen that impact the 177 * rendering of the content, eg, errors or form submissions. You 178 * can also intercept URL loading here (via {@link 179 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 180 * shouldOverrideUrlLoading()}).</li> 181 * <li>Modifying the {@link android.webkit.WebSettings}, such as 182 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 183 * setJavaScriptEnabled()}. </li> 184 * <li>Adding JavaScript-to-Java interfaces with the {@link 185 * android.webkit.WebView#addJavascriptInterface} method. 186 * This lets you bind Java objects into the WebView so they can be 187 * controlled from the web pages JavaScript.</li> 188 * </ul> 189 * 190 * <p>Here's a more complicated example, showing error handling, 191 * settings, and progress notification:</p> 192 * 193 * <pre class="prettyprint"> 194 * // Let's display the progress in the activity title bar, like the 195 * // browser app does. 196 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 197 * 198 * webview.getSettings().setJavaScriptEnabled(true); 199 * 200 * final Activity activity = this; 201 * webview.setWebChromeClient(new WebChromeClient() { 202 * public void onProgressChanged(WebView view, int progress) { 203 * // Activities and WebViews measure progress with different scales. 204 * // The progress meter will automatically disappear when we reach 100% 205 * activity.setProgress(progress * 1000); 206 * } 207 * }); 208 * webview.setWebViewClient(new WebViewClient() { 209 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 210 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 211 * } 212 * }); 213 * 214 * webview.loadUrl("http://slashdot.org/"); 215 * </pre> 216 * 217 * <h3>Cookie and window management</h3> 218 * 219 * <p>For obvious security reasons, your application has its own 220 * cache, cookie store etc.—it does not share the Browser 221 * application's data. Cookies are managed on a separate thread, so 222 * operations like index building don't block the UI 223 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 224 * if you want to use cookies in your application. 225 * </p> 226 * 227 * <p>By default, requests by the HTML to open new windows are 228 * ignored. This is true whether they be opened by JavaScript or by 229 * the target attribute on a link. You can customize your 230 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 231 * and render them in whatever manner you want.</p> 232 * 233 * <p>The standard behavior for an Activity is to be destroyed and 234 * recreated when the device orientation or any other configuration changes. This will cause 235 * the WebView to reload the current page. If you don't want that, you 236 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 237 * changes, and then just leave the WebView alone. It'll automatically 238 * re-orient itself as appropriate. Read <a 239 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 240 * more information about how to handle configuration changes during runtime.</p> 241 * 242 * 243 * <h3>Building web pages to support different screen densities</h3> 244 * 245 * <p>The screen density of a device is based on the screen resolution. A screen with low density 246 * has fewer available pixels per inch, where a screen with high density 247 * has more — sometimes significantly more — pixels per inch. The density of a 248 * screen is important because, other things being equal, a UI element (such as a button) whose 249 * height and width are defined in terms of screen pixels will appear larger on the lower density 250 * screen and smaller on the higher density screen. 251 * For simplicity, Android collapses all actual screen densities into three generalized densities: 252 * high, medium, and low.</p> 253 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 254 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 255 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 256 * are bigger). 257 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 258 * you (as a web developer) target screens with different screen densities.</p> 259 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 260 * <ul> 261 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 262 * default scaling factor used for the current device. For example, if the value of {@code 263 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 264 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 265 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 266 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 267 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 268 * (discussed below), then you can stop this default scaling behavior.</li> 269 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 270 * densities for which this style sheet is to be used. The corresponding value should be either 271 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 272 * density, or high density screens, respectively. For example: 273 * <pre> 274 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 275 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 276 * which is the high density pixel ratio.</p> 277 * </li> 278 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 279 * this to specify the target density for which the web page is designed, using the following 280 * values: 281 * <ul> 282 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 283 * occurs.</li> 284 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 285 * as appropriate.</li> 286 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 287 * low density screens scale down. This is also the default behavior.</li> 288 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 289 * as appropriate.</li> 290 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 291 * values are 70-400).</li> 292 * </ul> 293 * <p>Here's an example meta tag to specify the target density:</p> 294 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 295 * </ul> 296 * <p>If you want to modify your web page for different densities, by using the {@code 297 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 298 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 299 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 300 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 301 * 302 * 303 */ 304@Widget 305public class WebView extends AbsoluteLayout 306 implements ViewTreeObserver.OnGlobalFocusChangeListener, 307 ViewGroup.OnHierarchyChangeListener { 308 309 // enable debug output for drag trackers 310 private static final boolean DEBUG_DRAG_TRACKER = false; 311 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 312 // the screen all-the-time. Good for profiling our drawing code 313 static private final boolean AUTO_REDRAW_HACK = false; 314 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 315 private boolean mAutoRedraw; 316 317 static final String LOGTAG = "webview"; 318 319 private ZoomManager mZoomManager; 320 321 /** 322 * Transportation object for returning WebView across thread boundaries. 323 */ 324 public class WebViewTransport { 325 private WebView mWebview; 326 327 /** 328 * Set the WebView to the transportation object. 329 * @param webview The WebView to transport. 330 */ 331 public synchronized void setWebView(WebView webview) { 332 mWebview = webview; 333 } 334 335 /** 336 * Return the WebView object. 337 * @return WebView The transported WebView object. 338 */ 339 public synchronized WebView getWebView() { 340 return mWebview; 341 } 342 } 343 344 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 345 private final CallbackProxy mCallbackProxy; 346 347 private final WebViewDatabase mDatabase; 348 349 // SSL certificate for the main top-level page (if secure) 350 private SslCertificate mCertificate; 351 352 // Native WebView pointer that is 0 until the native object has been 353 // created. 354 private int mNativeClass; 355 // This would be final but it needs to be set to null when the WebView is 356 // destroyed. 357 private WebViewCore mWebViewCore; 358 // Handler for dispatching UI messages. 359 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 360 private WebTextView mWebTextView; 361 // Used to ignore changes to webkit text that arrives to the UI side after 362 // more key events. 363 private int mTextGeneration; 364 365 /* package */ void incrementTextGeneration() { mTextGeneration++; } 366 367 // Used by WebViewCore to create child views. 368 /* package */ final ViewManager mViewManager; 369 370 // Used to display in full screen mode 371 PluginFullScreenHolder mFullScreenHolder; 372 373 /** 374 * Position of the last touch event. 375 */ 376 private float mLastTouchX; 377 private float mLastTouchY; 378 379 /** 380 * Time of the last touch event. 381 */ 382 private long mLastTouchTime; 383 384 /** 385 * Time of the last time sending touch event to WebViewCore 386 */ 387 private long mLastSentTouchTime; 388 389 /** 390 * The minimum elapsed time before sending another ACTION_MOVE event to 391 * WebViewCore. This really should be tuned for each type of the devices. 392 * For example in Google Map api test case, it takes Dream device at least 393 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 394 * triggering the layout and drawing the picture. While the same process 395 * takes 60+ms on the current high speed device. If we make 396 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 397 * to WebViewCore queue and the real layout and draw events will be pushed 398 * to further, which slows down the refresh rate. Choose 50 to favor the 399 * current high speed devices. For Dream like devices, 100 is a better 400 * choice. Maybe make this in the buildspec later. 401 */ 402 private static final int TOUCH_SENT_INTERVAL = 50; 403 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 404 405 /** 406 * Helper class to get velocity for fling 407 */ 408 VelocityTracker mVelocityTracker; 409 private int mMaximumFling; 410 private float mLastVelocity; 411 private float mLastVelX; 412 private float mLastVelY; 413 414 // A pointer to the native scrollable layer when dragging layers. Only 415 // valid when mTouchMode is TOUCH_DRAG_LAYER_MODE. 416 private int mScrollingLayer; 417 418 // only trigger accelerated fling if the new velocity is at least 419 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 420 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 421 422 /** 423 * Touch mode 424 */ 425 private int mTouchMode = TOUCH_DONE_MODE; 426 private static final int TOUCH_INIT_MODE = 1; 427 private static final int TOUCH_DRAG_START_MODE = 2; 428 private static final int TOUCH_DRAG_MODE = 3; 429 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 430 private static final int TOUCH_SHORTPRESS_MODE = 5; 431 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 432 private static final int TOUCH_DONE_MODE = 7; 433 private static final int TOUCH_PINCH_DRAG = 8; 434 private static final int TOUCH_DRAG_LAYER_MODE = 9; 435 436 // Whether to forward the touch events to WebCore 437 private boolean mForwardTouchEvents = false; 438 439 // Whether to prevent default during touch. The initial value depends on 440 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 441 // for touch down. Otherwise UI will wait for the answer of the first 442 // confirmed move before taking over the control. 443 private static final int PREVENT_DEFAULT_NO = 0; 444 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 445 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 446 private static final int PREVENT_DEFAULT_YES = 3; 447 private static final int PREVENT_DEFAULT_IGNORE = 4; 448 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 449 450 // true when the touch movement exceeds the slop 451 private boolean mConfirmMove; 452 453 // if true, touch events will be first processed by WebCore, if prevent 454 // default is not set, the UI will continue handle them. 455 private boolean mDeferTouchProcess; 456 457 // to avoid interfering with the current touch events, track them 458 // separately. Currently no snapping or fling in the deferred process mode 459 private int mDeferTouchMode = TOUCH_DONE_MODE; 460 private float mLastDeferTouchX; 461 private float mLastDeferTouchY; 462 463 // To keep track of whether the current drag was initiated by a WebTextView, 464 // so that we know not to hide the cursor 465 boolean mDragFromTextInput; 466 467 // Whether or not to draw the cursor ring. 468 private boolean mDrawCursorRing = true; 469 470 // true if onPause has been called (and not onResume) 471 private boolean mIsPaused; 472 473 /** 474 * Customizable constant 475 */ 476 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 477 private int mTouchSlopSquare; 478 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 479 private int mDoubleTapSlopSquare; 480 // pre-computed density adjusted navigation slop 481 private int mNavSlop; 482 // This should be ViewConfiguration.getTapTimeout() 483 // But system time out is 100ms, which is too short for the browser. 484 // In the browser, if it switches out of tap too soon, jump tap won't work. 485 private static final int TAP_TIMEOUT = 200; 486 // This should be ViewConfiguration.getLongPressTimeout() 487 // But system time out is 500ms, which is too short for the browser. 488 // With a short timeout, it's difficult to treat trigger a short press. 489 private static final int LONG_PRESS_TIMEOUT = 1000; 490 // needed to avoid flinging after a pause of no movement 491 private static final int MIN_FLING_TIME = 250; 492 // draw unfiltered after drag is held without movement 493 private static final int MOTIONLESS_TIME = 100; 494 // The amount of content to overlap between two screens when going through 495 // pages with the space bar, in pixels. 496 private static final int PAGE_SCROLL_OVERLAP = 24; 497 498 /** 499 * These prevent calling requestLayout if either dimension is fixed. This 500 * depends on the layout parameters and the measure specs. 501 */ 502 boolean mWidthCanMeasure; 503 boolean mHeightCanMeasure; 504 505 // Remember the last dimensions we sent to the native side so we can avoid 506 // sending the same dimensions more than once. 507 int mLastWidthSent; 508 int mLastHeightSent; 509 510 private int mContentWidth; // cache of value from WebViewCore 511 private int mContentHeight; // cache of value from WebViewCore 512 513 // Need to have the separate control for horizontal and vertical scrollbar 514 // style than the View's single scrollbar style 515 private boolean mOverlayHorizontalScrollbar = true; 516 private boolean mOverlayVerticalScrollbar = false; 517 518 // our standard speed. this way small distances will be traversed in less 519 // time than large distances, but we cap the duration, so that very large 520 // distances won't take too long to get there. 521 private static final int STD_SPEED = 480; // pixels per second 522 // time for the longest scroll animation 523 private static final int MAX_DURATION = 750; // milliseconds 524 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 525 private Scroller mScroller; 526 527 private boolean mWrapContent; 528 private static final int MOTIONLESS_FALSE = 0; 529 private static final int MOTIONLESS_PENDING = 1; 530 private static final int MOTIONLESS_TRUE = 2; 531 private static final int MOTIONLESS_IGNORE = 3; 532 private int mHeldMotionless; 533 534 // An instance for injecting accessibility in WebViews with disabled 535 // JavaScript or ones for which no accessibility script exists 536 private AccessibilityInjector mAccessibilityInjector; 537 538 // the color used to highlight the touch rectangles 539 private static final int mHightlightColor = 0x33000000; 540 // the round corner for the highlight path 541 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 542 // the region indicating where the user touched on the screen 543 private Region mTouchHighlightRegion = new Region(); 544 // the paint for the touch highlight 545 private Paint mTouchHightlightPaint; 546 // debug only 547 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 548 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 549 private Paint mTouchCrossHairColor; 550 private int mTouchHighlightX; 551 private int mTouchHighlightY; 552 553 /* 554 * Private message ids 555 */ 556 private static final int REMEMBER_PASSWORD = 1; 557 private static final int NEVER_REMEMBER_PASSWORD = 2; 558 private static final int SWITCH_TO_SHORTPRESS = 3; 559 private static final int SWITCH_TO_LONGPRESS = 4; 560 private static final int RELEASE_SINGLE_TAP = 5; 561 private static final int REQUEST_FORM_DATA = 6; 562 private static final int RESUME_WEBCORE_PRIORITY = 7; 563 private static final int DRAG_HELD_MOTIONLESS = 8; 564 private static final int AWAKEN_SCROLL_BARS = 9; 565 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 566 567 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 568 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 569 570 /* 571 * Package message ids 572 */ 573 //! arg1=x, arg2=y 574 static final int SCROLL_TO_MSG_ID = 101; 575 static final int SCROLL_BY_MSG_ID = 102; 576 //! arg1=x, arg2=y 577 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 578 //! arg1=x, arg2=y 579 static final int SYNC_SCROLL_TO_MSG_ID = 104; 580 static final int NEW_PICTURE_MSG_ID = 105; 581 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 582 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 583 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 584 static final int UPDATE_ZOOM_RANGE = 109; 585 static final int UNHANDLED_NAV_KEY = 110; 586 static final int CLEAR_TEXT_ENTRY = 111; 587 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 588 static final int SHOW_RECT_MSG_ID = 113; 589 static final int LONG_PRESS_CENTER = 114; 590 static final int PREVENT_TOUCH_ID = 115; 591 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 592 // obj=Rect in doc coordinates 593 static final int INVAL_RECT_MSG_ID = 117; 594 static final int REQUEST_KEYBOARD = 118; 595 static final int DO_MOTION_UP = 119; 596 static final int SHOW_FULLSCREEN = 120; 597 static final int HIDE_FULLSCREEN = 121; 598 static final int DOM_FOCUS_CHANGED = 122; 599 static final int REPLACE_BASE_CONTENT = 123; 600 // 124; 601 static final int RETURN_LABEL = 125; 602 static final int FIND_AGAIN = 126; 603 static final int CENTER_FIT_RECT = 127; 604 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 605 static final int SET_SCROLLBAR_MODES = 129; 606 static final int SELECTION_STRING_CHANGED = 130; 607 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 608 static final int SAVE_WEBARCHIVE_FINISHED = 132; 609 610 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 611 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 612 613 static final String[] HandlerPrivateDebugString = { 614 "REMEMBER_PASSWORD", // = 1; 615 "NEVER_REMEMBER_PASSWORD", // = 2; 616 "SWITCH_TO_SHORTPRESS", // = 3; 617 "SWITCH_TO_LONGPRESS", // = 4; 618 "RELEASE_SINGLE_TAP", // = 5; 619 "REQUEST_FORM_DATA", // = 6; 620 "RESUME_WEBCORE_PRIORITY", // = 7; 621 "DRAG_HELD_MOTIONLESS", // = 8; 622 "AWAKEN_SCROLL_BARS", // = 9; 623 "PREVENT_DEFAULT_TIMEOUT" // = 10; 624 }; 625 626 static final String[] HandlerPackageDebugString = { 627 "SCROLL_TO_MSG_ID", // = 101; 628 "SCROLL_BY_MSG_ID", // = 102; 629 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 630 "SYNC_SCROLL_TO_MSG_ID", // = 104; 631 "NEW_PICTURE_MSG_ID", // = 105; 632 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 633 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 634 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 635 "UPDATE_ZOOM_RANGE", // = 109; 636 "UNHANDLED_NAV_KEY", // = 110; 637 "CLEAR_TEXT_ENTRY", // = 111; 638 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 639 "SHOW_RECT_MSG_ID", // = 113; 640 "LONG_PRESS_CENTER", // = 114; 641 "PREVENT_TOUCH_ID", // = 115; 642 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 643 "INVAL_RECT_MSG_ID", // = 117; 644 "REQUEST_KEYBOARD", // = 118; 645 "DO_MOTION_UP", // = 119; 646 "SHOW_FULLSCREEN", // = 120; 647 "HIDE_FULLSCREEN", // = 121; 648 "DOM_FOCUS_CHANGED", // = 122; 649 "REPLACE_BASE_CONTENT", // = 123; 650 "124", // = 124; 651 "RETURN_LABEL", // = 125; 652 "FIND_AGAIN", // = 126; 653 "CENTER_FIT_RECT", // = 127; 654 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 655 "SET_SCROLLBAR_MODES", // = 129; 656 "SELECTION_STRING_CHANGED", // = 130; 657 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 658 "SAVE_WEBARCHIVE_FINISHED" // = 132; 659 }; 660 661 // If the site doesn't use the viewport meta tag to specify the viewport, 662 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 663 static final int DEFAULT_VIEWPORT_WIDTH = 1040; 664 665 // normally we try to fit the content to the minimum preferred width 666 // calculated by the Webkit. To avoid the bad behavior when some site's 667 // minimum preferred width keeps growing when changing the viewport width or 668 // the minimum preferred width is huge, an upper limit is needed. 669 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 670 671 // initial scale in percent. 0 means using default. 672 private int mInitialScaleInPercent = 0; 673 674 private boolean mUserScroll = false; 675 676 private int mSnapScrollMode = SNAP_NONE; 677 private static final int SNAP_NONE = 0; 678 private static final int SNAP_LOCK = 1; // not a separate state 679 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 680 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 681 private boolean mSnapPositive; 682 683 // keep these in sync with their counterparts in WebView.cpp 684 private static final int DRAW_EXTRAS_NONE = 0; 685 private static final int DRAW_EXTRAS_FIND = 1; 686 private static final int DRAW_EXTRAS_SELECTION = 2; 687 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 688 689 // keep this in sync with WebCore:ScrollbarMode in WebKit 690 private static final int SCROLLBAR_AUTO = 0; 691 private static final int SCROLLBAR_ALWAYSOFF = 1; 692 // as we auto fade scrollbar, this is ignored. 693 private static final int SCROLLBAR_ALWAYSON = 2; 694 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 695 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 696 697 // the alias via which accessibility JavaScript interface is exposed 698 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 699 700 // JavaScript to inject the script chooser which will 701 // pick the right script for the current URL 702 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 703 "javascript:(function() {" + 704 " var chooser = document.createElement('script');" + 705 " chooser.type = 'text/javascript';" + 706 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 707 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 708 " })();"; 709 710 // Used to match key downs and key ups 711 private boolean mGotKeyDown; 712 713 /* package */ static boolean mLogEvent = true; 714 715 // for event log 716 private long mLastTouchUpTime = 0; 717 718 /** 719 * URI scheme for telephone number 720 */ 721 public static final String SCHEME_TEL = "tel:"; 722 /** 723 * URI scheme for email address 724 */ 725 public static final String SCHEME_MAILTO = "mailto:"; 726 /** 727 * URI scheme for map address 728 */ 729 public static final String SCHEME_GEO = "geo:0,0?q="; 730 731 private int mBackgroundColor = Color.WHITE; 732 733 // Used to notify listeners of a new picture. 734 private PictureListener mPictureListener; 735 /** 736 * Interface to listen for new pictures as they change. 737 */ 738 public interface PictureListener { 739 /** 740 * Notify the listener that the picture has changed. 741 * @param view The WebView that owns the picture. 742 * @param picture The new picture. 743 */ 744 public void onNewPicture(WebView view, Picture picture); 745 } 746 747 // FIXME: Want to make this public, but need to change the API file. 748 public /*static*/ class HitTestResult { 749 /** 750 * Default HitTestResult, where the target is unknown 751 */ 752 public static final int UNKNOWN_TYPE = 0; 753 /** 754 * HitTestResult for hitting a HTML::a tag 755 */ 756 public static final int ANCHOR_TYPE = 1; 757 /** 758 * HitTestResult for hitting a phone number 759 */ 760 public static final int PHONE_TYPE = 2; 761 /** 762 * HitTestResult for hitting a map address 763 */ 764 public static final int GEO_TYPE = 3; 765 /** 766 * HitTestResult for hitting an email address 767 */ 768 public static final int EMAIL_TYPE = 4; 769 /** 770 * HitTestResult for hitting an HTML::img tag 771 */ 772 public static final int IMAGE_TYPE = 5; 773 /** 774 * HitTestResult for hitting a HTML::a tag which contains HTML::img 775 */ 776 public static final int IMAGE_ANCHOR_TYPE = 6; 777 /** 778 * HitTestResult for hitting a HTML::a tag with src=http 779 */ 780 public static final int SRC_ANCHOR_TYPE = 7; 781 /** 782 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 783 */ 784 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 785 /** 786 * HitTestResult for hitting an edit text area 787 */ 788 public static final int EDIT_TEXT_TYPE = 9; 789 790 private int mType; 791 private String mExtra; 792 793 HitTestResult() { 794 mType = UNKNOWN_TYPE; 795 } 796 797 private void setType(int type) { 798 mType = type; 799 } 800 801 private void setExtra(String extra) { 802 mExtra = extra; 803 } 804 805 public int getType() { 806 return mType; 807 } 808 809 public String getExtra() { 810 return mExtra; 811 } 812 } 813 814 /** 815 * Construct a new WebView with a Context object. 816 * @param context A Context object used to access application assets. 817 */ 818 public WebView(Context context) { 819 this(context, null); 820 } 821 822 /** 823 * Construct a new WebView with layout parameters. 824 * @param context A Context object used to access application assets. 825 * @param attrs An AttributeSet passed to our parent. 826 */ 827 public WebView(Context context, AttributeSet attrs) { 828 this(context, attrs, com.android.internal.R.attr.webViewStyle); 829 } 830 831 /** 832 * Construct a new WebView with layout parameters and a default style. 833 * @param context A Context object used to access application assets. 834 * @param attrs An AttributeSet passed to our parent. 835 * @param defStyle The default style resource ID. 836 */ 837 public WebView(Context context, AttributeSet attrs, int defStyle) { 838 this(context, attrs, defStyle, false); 839 } 840 841 /** 842 * Construct a new WebView with layout parameters and a default style. 843 * @param context A Context object used to access application assets. 844 * @param attrs An AttributeSet passed to our parent. 845 * @param defStyle The default style resource ID. 846 */ 847 public WebView(Context context, AttributeSet attrs, int defStyle, 848 boolean privateBrowsing) { 849 this(context, attrs, defStyle, null, privateBrowsing); 850 } 851 852 /** 853 * Construct a new WebView with layout parameters, a default style and a set 854 * of custom Javscript interfaces to be added to the WebView at initialization 855 * time. This guarantees that these interfaces will be available when the JS 856 * context is initialized. 857 * @param context A Context object used to access application assets. 858 * @param attrs An AttributeSet passed to our parent. 859 * @param defStyle The default style resource ID. 860 * @param javascriptInterfaces is a Map of interface names, as keys, and 861 * object implementing those interfaces, as values. 862 * @hide pending API council approval. 863 */ 864 protected WebView(Context context, AttributeSet attrs, int defStyle, 865 Map<String, Object> javascriptInterfaces, boolean privateBrowsing) { 866 super(context, attrs, defStyle); 867 868 if (AccessibilityManager.getInstance(context).isEnabled()) { 869 if (javascriptInterfaces == null) { 870 javascriptInterfaces = new HashMap<String, Object>(); 871 } 872 exposeAccessibilityJavaScriptApi(javascriptInterfaces); 873 } 874 875 mCallbackProxy = new CallbackProxy(context, this); 876 mViewManager = new ViewManager(this); 877 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 878 mDatabase = WebViewDatabase.getInstance(context); 879 mScroller = new Scroller(context); 880 mZoomManager = new ZoomManager(this, mCallbackProxy); 881 882 /* The init method must follow the creation of certain member variables, 883 * such as the mZoomManager. 884 */ 885 init(); 886 setupPackageListener(context); 887 updateMultiTouchSupport(context); 888 889 if (privateBrowsing) { 890 startPrivateBrowsing(); 891 } 892 } 893 894 /* 895 * The intent receiver that monitors for changes to relevant packages (e.g., 896 * sGoogleApps) and notifies WebViewCore of their existence. 897 */ 898 private static BroadcastReceiver sPackageInstallationReceiver = null; 899 900 /* 901 * A set of Google packages we monitor for the 902 * navigator.isApplicationInstalled() API. Add additional packages as 903 * needed. 904 */ 905 private static Set<String> sGoogleApps; 906 static { 907 sGoogleApps = new HashSet<String>(); 908 sGoogleApps.add("com.google.android.youtube"); 909 } 910 911 private void setupPackageListener(Context context) { 912 913 /* 914 * we must synchronize the instance check and the creation of the 915 * receiver to ensure that only ONE receiver exists for all WebView 916 * instances. 917 */ 918 synchronized (WebView.class) { 919 920 // if the receiver already exists then we do not need to register it 921 // again 922 if (sPackageInstallationReceiver != null) { 923 return; 924 } 925 926 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 927 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 928 filter.addDataScheme("package"); 929 sPackageInstallationReceiver = new BroadcastReceiver() { 930 931 @Override 932 public void onReceive(Context context, Intent intent) { 933 final String action = intent.getAction(); 934 final String packageName = intent.getData().getSchemeSpecificPart(); 935 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 936 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 937 // if it is replacing, refreshPlugins() when adding 938 return; 939 } 940 941 if (sGoogleApps.contains(packageName)) { 942 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 943 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 944 } else { 945 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 946 } 947 } 948 949 PluginManager pm = PluginManager.getInstance(context); 950 if (pm.containsPluginPermissionAndSignatures(packageName)) { 951 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 952 } 953 } 954 }; 955 956 context.getApplicationContext().registerReceiver(sPackageInstallationReceiver, filter); 957 } 958 959 // check if any of the monitored apps are already installed 960 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 961 962 @Override 963 protected Set<String> doInBackground(Void... unused) { 964 Set<String> installedPackages = new HashSet<String>(); 965 PackageManager pm = mContext.getPackageManager(); 966 List<PackageInfo> packages = pm.getInstalledPackages(0); 967 for (PackageInfo p : packages) { 968 if (sGoogleApps.contains(p.packageName)) { 969 installedPackages.add(p.packageName); 970 } 971 } 972 return installedPackages; 973 } 974 975 // Executes on the UI thread 976 @Override 977 protected void onPostExecute(Set<String> installedPackages) { 978 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 979 } 980 }; 981 task.execute(); 982 } 983 984 void updateMultiTouchSupport(Context context) { 985 mZoomManager.updateMultiTouchSupport(context); 986 } 987 988 private void init() { 989 setWillNotDraw(false); 990 setFocusable(true); 991 setFocusableInTouchMode(true); 992 setClickable(true); 993 setLongClickable(true); 994 995 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 996 int slop = configuration.getScaledTouchSlop(); 997 mTouchSlopSquare = slop * slop; 998 mMinLockSnapReverseDistance = slop; 999 slop = configuration.getScaledDoubleTapSlop(); 1000 mDoubleTapSlopSquare = slop * slop; 1001 final float density = getContext().getResources().getDisplayMetrics().density; 1002 // use one line height, 16 based on our current default font, for how 1003 // far we allow a touch be away from the edge of a link 1004 mNavSlop = (int) (16 * density); 1005 mZoomManager.init(density); 1006 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1007 1008 // Compute the inverse of the density squared. 1009 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1010 } 1011 1012 /** 1013 * Exposes accessibility APIs to JavaScript by appending them to the JavaScript 1014 * interfaces map provided by the WebView client. In case of conflicting 1015 * alias with the one of the accessibility API the user specified one wins. 1016 * 1017 * @param javascriptInterfaces A map with interfaces to be exposed to JavaScript. 1018 */ 1019 private void exposeAccessibilityJavaScriptApi(Map<String, Object> javascriptInterfaces) { 1020 if (javascriptInterfaces.containsKey(ALIAS_ACCESSIBILITY_JS_INTERFACE)) { 1021 Log.w(LOGTAG, "JavaScript interface mapped to \"" + ALIAS_ACCESSIBILITY_JS_INTERFACE 1022 + "\" overrides the accessibility API JavaScript interface. No accessibility" 1023 + "API will be exposed to JavaScript!"); 1024 return; 1025 } 1026 1027 // expose the TTS for now ... 1028 javascriptInterfaces.put(ALIAS_ACCESSIBILITY_JS_INTERFACE, 1029 new TextToSpeech(getContext(), null)); 1030 } 1031 1032 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1033 final float density = mContext.getResources().getDisplayMetrics().density 1034 * 100 / zoomDensity; 1035 mNavSlop = (int) (16 * density); 1036 mZoomManager.updateDefaultZoomDensity(density); 1037 } 1038 1039 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1040 String password, final Message resumeMsg) { 1041 boolean rVal = false; 1042 if (resumeMsg == null) { 1043 // null resumeMsg implies saving password silently 1044 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1045 } else { 1046 final Message remember = mPrivateHandler.obtainMessage( 1047 REMEMBER_PASSWORD); 1048 remember.getData().putString("host", schemePlusHost); 1049 remember.getData().putString("username", username); 1050 remember.getData().putString("password", password); 1051 remember.obj = resumeMsg; 1052 1053 final Message neverRemember = mPrivateHandler.obtainMessage( 1054 NEVER_REMEMBER_PASSWORD); 1055 neverRemember.getData().putString("host", schemePlusHost); 1056 neverRemember.getData().putString("username", username); 1057 neverRemember.getData().putString("password", password); 1058 neverRemember.obj = resumeMsg; 1059 1060 new AlertDialog.Builder(getContext()) 1061 .setTitle(com.android.internal.R.string.save_password_label) 1062 .setMessage(com.android.internal.R.string.save_password_message) 1063 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1064 new DialogInterface.OnClickListener() { 1065 public void onClick(DialogInterface dialog, int which) { 1066 resumeMsg.sendToTarget(); 1067 } 1068 }) 1069 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1070 new DialogInterface.OnClickListener() { 1071 public void onClick(DialogInterface dialog, int which) { 1072 remember.sendToTarget(); 1073 } 1074 }) 1075 .setNegativeButton(com.android.internal.R.string.save_password_never, 1076 new DialogInterface.OnClickListener() { 1077 public void onClick(DialogInterface dialog, int which) { 1078 neverRemember.sendToTarget(); 1079 } 1080 }) 1081 .setOnCancelListener(new OnCancelListener() { 1082 public void onCancel(DialogInterface dialog) { 1083 resumeMsg.sendToTarget(); 1084 } 1085 }).show(); 1086 // Return true so that WebViewCore will pause while the dialog is 1087 // up. 1088 rVal = true; 1089 } 1090 return rVal; 1091 } 1092 1093 @Override 1094 public void setScrollBarStyle(int style) { 1095 if (style == View.SCROLLBARS_INSIDE_INSET 1096 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1097 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1098 } else { 1099 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1100 } 1101 super.setScrollBarStyle(style); 1102 } 1103 1104 /** 1105 * Specify whether the horizontal scrollbar has overlay style. 1106 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1107 */ 1108 public void setHorizontalScrollbarOverlay(boolean overlay) { 1109 mOverlayHorizontalScrollbar = overlay; 1110 } 1111 1112 /** 1113 * Specify whether the vertical scrollbar has overlay style. 1114 * @param overlay TRUE if vertical scrollbar should have overlay style. 1115 */ 1116 public void setVerticalScrollbarOverlay(boolean overlay) { 1117 mOverlayVerticalScrollbar = overlay; 1118 } 1119 1120 /** 1121 * Return whether horizontal scrollbar has overlay style 1122 * @return TRUE if horizontal scrollbar has overlay style. 1123 */ 1124 public boolean overlayHorizontalScrollbar() { 1125 return mOverlayHorizontalScrollbar; 1126 } 1127 1128 /** 1129 * Return whether vertical scrollbar has overlay style 1130 * @return TRUE if vertical scrollbar has overlay style. 1131 */ 1132 public boolean overlayVerticalScrollbar() { 1133 return mOverlayVerticalScrollbar; 1134 } 1135 1136 /* 1137 * Return the width of the view where the content of WebView should render 1138 * to. 1139 * Note: this can be called from WebCoreThread. 1140 */ 1141 /* package */ int getViewWidth() { 1142 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1143 return getWidth(); 1144 } else { 1145 return getWidth() - getVerticalScrollbarWidth(); 1146 } 1147 } 1148 1149 /* 1150 * returns the height of the titlebarview (if any). Does not care about 1151 * scrolling 1152 */ 1153 int getTitleHeight() { 1154 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1155 } 1156 1157 /* 1158 * Return the amount of the titlebarview (if any) that is visible 1159 * 1160 * @hide 1161 */ 1162 public int getVisibleTitleHeight() { 1163 return Math.max(getTitleHeight() - mScrollY, 0); 1164 } 1165 1166 /* 1167 * Return the height of the view where the content of WebView should render 1168 * to. Note that this excludes mTitleBar, if there is one. 1169 * Note: this can be called from WebCoreThread. 1170 */ 1171 /* package */ int getViewHeight() { 1172 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1173 } 1174 1175 private int getViewHeightWithTitle() { 1176 int height = getHeight(); 1177 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1178 height -= getHorizontalScrollbarHeight(); 1179 } 1180 return height; 1181 } 1182 1183 /** 1184 * @return The SSL certificate for the main top-level page or null if 1185 * there is no certificate (the site is not secure). 1186 */ 1187 public SslCertificate getCertificate() { 1188 return mCertificate; 1189 } 1190 1191 /** 1192 * Sets the SSL certificate for the main top-level page. 1193 */ 1194 public void setCertificate(SslCertificate certificate) { 1195 if (DebugFlags.WEB_VIEW) { 1196 Log.v(LOGTAG, "setCertificate=" + certificate); 1197 } 1198 // here, the certificate can be null (if the site is not secure) 1199 mCertificate = certificate; 1200 } 1201 1202 //------------------------------------------------------------------------- 1203 // Methods called by activity 1204 //------------------------------------------------------------------------- 1205 1206 /** 1207 * Save the username and password for a particular host in the WebView's 1208 * internal database. 1209 * @param host The host that required the credentials. 1210 * @param username The username for the given host. 1211 * @param password The password for the given host. 1212 */ 1213 public void savePassword(String host, String username, String password) { 1214 mDatabase.setUsernamePassword(host, username, password); 1215 } 1216 1217 /** 1218 * Set the HTTP authentication credentials for a given host and realm. 1219 * 1220 * @param host The host for the credentials. 1221 * @param realm The realm for the credentials. 1222 * @param username The username for the password. If it is null, it means 1223 * password can't be saved. 1224 * @param password The password 1225 */ 1226 public void setHttpAuthUsernamePassword(String host, String realm, 1227 String username, String password) { 1228 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1229 } 1230 1231 /** 1232 * Retrieve the HTTP authentication username and password for a given 1233 * host & realm pair 1234 * 1235 * @param host The host for which the credentials apply. 1236 * @param realm The realm for which the credentials apply. 1237 * @return String[] if found, String[0] is username, which can be null and 1238 * String[1] is password. Return null if it can't find anything. 1239 */ 1240 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1241 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1242 } 1243 1244 /** 1245 * Destroy the internal state of the WebView. This method should be called 1246 * after the WebView has been removed from the view system. No other 1247 * methods may be called on a WebView after destroy. 1248 */ 1249 public void destroy() { 1250 clearTextEntry(); 1251 if (mWebViewCore != null) { 1252 // Set the handlers to null before destroying WebViewCore so no 1253 // more messages will be posted. 1254 mCallbackProxy.setWebViewClient(null); 1255 mCallbackProxy.setWebChromeClient(null); 1256 // Tell WebViewCore to destroy itself 1257 synchronized (this) { 1258 WebViewCore webViewCore = mWebViewCore; 1259 mWebViewCore = null; // prevent using partial webViewCore 1260 webViewCore.destroy(); 1261 } 1262 // Remove any pending messages that might not be serviced yet. 1263 mPrivateHandler.removeCallbacksAndMessages(null); 1264 mCallbackProxy.removeCallbacksAndMessages(null); 1265 // Wake up the WebCore thread just in case it is waiting for a 1266 // javascript dialog. 1267 synchronized (mCallbackProxy) { 1268 mCallbackProxy.notify(); 1269 } 1270 } 1271 if (mNativeClass != 0) { 1272 nativeDestroy(); 1273 mNativeClass = 0; 1274 } 1275 } 1276 1277 /** 1278 * Enables platform notifications of data state and proxy changes. 1279 */ 1280 public static void enablePlatformNotifications() { 1281 Network.enablePlatformNotifications(); 1282 } 1283 1284 /** 1285 * If platform notifications are enabled, this should be called 1286 * from the Activity's onPause() or onStop(). 1287 */ 1288 public static void disablePlatformNotifications() { 1289 Network.disablePlatformNotifications(); 1290 } 1291 1292 /** 1293 * Sets JavaScript engine flags. 1294 * 1295 * @param flags JS engine flags in a String 1296 * 1297 * @hide pending API solidification 1298 */ 1299 public void setJsFlags(String flags) { 1300 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1301 } 1302 1303 /** 1304 * Inform WebView of the network state. This is used to set 1305 * the javascript property window.navigator.isOnline and 1306 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1307 * @param networkUp boolean indicating if network is available 1308 */ 1309 public void setNetworkAvailable(boolean networkUp) { 1310 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1311 networkUp ? 1 : 0, 0); 1312 } 1313 1314 /** 1315 * Inform WebView about the current network type. 1316 * {@hide} 1317 */ 1318 public void setNetworkType(String type, String subtype) { 1319 Map<String, String> map = new HashMap<String, String>(); 1320 map.put("type", type); 1321 map.put("subtype", subtype); 1322 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1323 } 1324 /** 1325 * Save the state of this WebView used in 1326 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1327 * method no longer stores the display data for this WebView. The previous 1328 * behavior could potentially leak files if {@link #restoreState} was never 1329 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1330 * and restoring the display data. 1331 * @param outState The Bundle to store the WebView state. 1332 * @return The same copy of the back/forward list used to save the state. If 1333 * saveState fails, the returned list will be null. 1334 * @see #savePicture 1335 * @see #restorePicture 1336 */ 1337 public WebBackForwardList saveState(Bundle outState) { 1338 if (outState == null) { 1339 return null; 1340 } 1341 // We grab a copy of the back/forward list because a client of WebView 1342 // may have invalidated the history list by calling clearHistory. 1343 WebBackForwardList list = copyBackForwardList(); 1344 final int currentIndex = list.getCurrentIndex(); 1345 final int size = list.getSize(); 1346 // We should fail saving the state if the list is empty or the index is 1347 // not in a valid range. 1348 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1349 return null; 1350 } 1351 outState.putInt("index", currentIndex); 1352 // FIXME: This should just be a byte[][] instead of ArrayList but 1353 // Parcel.java does not have the code to handle multi-dimensional 1354 // arrays. 1355 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1356 for (int i = 0; i < size; i++) { 1357 WebHistoryItem item = list.getItemAtIndex(i); 1358 if (null == item) { 1359 // FIXME: this shouldn't happen 1360 // need to determine how item got set to null 1361 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1362 return null; 1363 } 1364 byte[] data = item.getFlattenedData(); 1365 if (data == null) { 1366 // It would be very odd to not have any data for a given history 1367 // item. And we will fail to rebuild the history list without 1368 // flattened data. 1369 return null; 1370 } 1371 history.add(data); 1372 } 1373 outState.putSerializable("history", history); 1374 if (mCertificate != null) { 1375 outState.putBundle("certificate", 1376 SslCertificate.saveState(mCertificate)); 1377 } 1378 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1379 return list; 1380 } 1381 1382 /** 1383 * Save the current display data to the Bundle given. Used in conjunction 1384 * with {@link #saveState}. 1385 * @param b A Bundle to store the display data. 1386 * @param dest The file to store the serialized picture data. Will be 1387 * overwritten with this WebView's picture data. 1388 * @return True if the picture was successfully saved. 1389 */ 1390 public boolean savePicture(Bundle b, final File dest) { 1391 if (dest == null || b == null) { 1392 return false; 1393 } 1394 final Picture p = capturePicture(); 1395 // Use a temporary file while writing to ensure the destination file 1396 // contains valid data. 1397 final File temp = new File(dest.getPath() + ".writing"); 1398 new Thread(new Runnable() { 1399 public void run() { 1400 FileOutputStream out = null; 1401 try { 1402 out = new FileOutputStream(temp); 1403 p.writeToStream(out); 1404 // Writing the picture succeeded, rename the temporary file 1405 // to the destination. 1406 temp.renameTo(dest); 1407 } catch (Exception e) { 1408 // too late to do anything about it. 1409 } finally { 1410 if (out != null) { 1411 try { 1412 out.close(); 1413 } catch (Exception e) { 1414 // Can't do anything about that 1415 } 1416 } 1417 temp.delete(); 1418 } 1419 } 1420 }).start(); 1421 // now update the bundle 1422 b.putInt("scrollX", mScrollX); 1423 b.putInt("scrollY", mScrollY); 1424 mZoomManager.saveZoomState(b); 1425 return true; 1426 } 1427 1428 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1429 int sx = b.getInt("scrollX", 0); 1430 int sy = b.getInt("scrollY", 0); 1431 1432 mDrawHistory = true; 1433 mHistoryPicture = p; 1434 mScrollX = sx; 1435 mScrollY = sy; 1436 mZoomManager.restoreZoomState(b); 1437 final float scale = mZoomManager.getScale(); 1438 mHistoryWidth = Math.round(p.getWidth() * scale); 1439 mHistoryHeight = Math.round(p.getHeight() * scale); 1440 1441 invalidate(); 1442 } 1443 1444 /** 1445 * Restore the display data that was save in {@link #savePicture}. Used in 1446 * conjunction with {@link #restoreState}. 1447 * @param b A Bundle containing the saved display data. 1448 * @param src The file where the picture data was stored. 1449 * @return True if the picture was successfully restored. 1450 */ 1451 public boolean restorePicture(Bundle b, File src) { 1452 if (src == null || b == null) { 1453 return false; 1454 } 1455 if (!src.exists()) { 1456 return false; 1457 } 1458 try { 1459 final FileInputStream in = new FileInputStream(src); 1460 final Bundle copy = new Bundle(b); 1461 new Thread(new Runnable() { 1462 public void run() { 1463 try { 1464 final Picture p = Picture.createFromStream(in); 1465 if (p != null) { 1466 // Post a runnable on the main thread to update the 1467 // history picture fields. 1468 mPrivateHandler.post(new Runnable() { 1469 public void run() { 1470 restoreHistoryPictureFields(p, copy); 1471 } 1472 }); 1473 } 1474 } finally { 1475 try { 1476 in.close(); 1477 } catch (Exception e) { 1478 // Nothing we can do now. 1479 } 1480 } 1481 } 1482 }).start(); 1483 } catch (FileNotFoundException e){ 1484 e.printStackTrace(); 1485 } 1486 return true; 1487 } 1488 1489 /** 1490 * Restore the state of this WebView from the given map used in 1491 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1492 * be called to restore the state of the WebView before using the object. If 1493 * it is called after the WebView has had a chance to build state (load 1494 * pages, create a back/forward list, etc.) there may be undesirable 1495 * side-effects. Please note that this method no longer restores the 1496 * display data for this WebView. See {@link #savePicture} and {@link 1497 * #restorePicture} for saving and restoring the display data. 1498 * @param inState The incoming Bundle of state. 1499 * @return The restored back/forward list or null if restoreState failed. 1500 * @see #savePicture 1501 * @see #restorePicture 1502 */ 1503 public WebBackForwardList restoreState(Bundle inState) { 1504 WebBackForwardList returnList = null; 1505 if (inState == null) { 1506 return returnList; 1507 } 1508 if (inState.containsKey("index") && inState.containsKey("history")) { 1509 mCertificate = SslCertificate.restoreState( 1510 inState.getBundle("certificate")); 1511 1512 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1513 final int index = inState.getInt("index"); 1514 // We can't use a clone of the list because we need to modify the 1515 // shared copy, so synchronize instead to prevent concurrent 1516 // modifications. 1517 synchronized (list) { 1518 final List<byte[]> history = 1519 (List<byte[]>) inState.getSerializable("history"); 1520 final int size = history.size(); 1521 // Check the index bounds so we don't crash in native code while 1522 // restoring the history index. 1523 if (index < 0 || index >= size) { 1524 return null; 1525 } 1526 for (int i = 0; i < size; i++) { 1527 byte[] data = history.remove(0); 1528 if (data == null) { 1529 // If we somehow have null data, we cannot reconstruct 1530 // the item and thus our history list cannot be rebuilt. 1531 return null; 1532 } 1533 WebHistoryItem item = new WebHistoryItem(data); 1534 list.addHistoryItem(item); 1535 } 1536 // Grab the most recent copy to return to the caller. 1537 returnList = copyBackForwardList(); 1538 // Update the copy to have the correct index. 1539 returnList.setCurrentIndex(index); 1540 } 1541 // Restore private browsing setting. 1542 if (inState.getBoolean("privateBrowsingEnabled")) { 1543 getSettings().setPrivateBrowsingEnabled(true); 1544 } 1545 // Remove all pending messages because we are restoring previous 1546 // state. 1547 mWebViewCore.removeMessages(); 1548 // Send a restore state message. 1549 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1550 } 1551 return returnList; 1552 } 1553 1554 /** 1555 * Load the given url with the extra headers. 1556 * @param url The url of the resource to load. 1557 * @param extraHeaders The extra headers sent with this url. This should not 1558 * include the common headers like "user-agent". If it does, it 1559 * will be replaced by the intrinsic value of the WebView. 1560 */ 1561 public void loadUrl(String url, Map<String, String> extraHeaders) { 1562 switchOutDrawHistory(); 1563 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1564 arg.mUrl = url; 1565 arg.mExtraHeaders = extraHeaders; 1566 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1567 clearTextEntry(); 1568 } 1569 1570 /** 1571 * Load the given url. 1572 * @param url The url of the resource to load. 1573 */ 1574 public void loadUrl(String url) { 1575 if (url == null) { 1576 return; 1577 } 1578 loadUrl(url, null); 1579 } 1580 1581 /** 1582 * Load the url with postData using "POST" method into the WebView. If url 1583 * is not a network url, it will be loaded with {link 1584 * {@link #loadUrl(String)} instead. 1585 * 1586 * @param url The url of the resource to load. 1587 * @param postData The data will be passed to "POST" request. 1588 */ 1589 public void postUrl(String url, byte[] postData) { 1590 if (URLUtil.isNetworkUrl(url)) { 1591 switchOutDrawHistory(); 1592 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1593 arg.mUrl = url; 1594 arg.mPostData = postData; 1595 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1596 clearTextEntry(); 1597 } else { 1598 loadUrl(url); 1599 } 1600 } 1601 1602 /** 1603 * Load the given data into the WebView. This will load the data into 1604 * WebView using the data: scheme. Content loaded through this mechanism 1605 * does not have the ability to load content from the network. 1606 * @param data A String of data in the given encoding. The date must 1607 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1608 * %27, %3f respectively. 1609 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1610 * @param encoding The encoding of the data. i.e. utf-8, base64 1611 */ 1612 public void loadData(String data, String mimeType, String encoding) { 1613 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1614 } 1615 1616 /** 1617 * Load the given data into the WebView, use the provided URL as the base 1618 * URL for the content. The base URL is the URL that represents the page 1619 * that is loaded through this interface. As such, it is used to resolve any 1620 * relative URLs. The historyUrl is used for the history entry. 1621 * <p> 1622 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1623 * files through "file:///android_asset/" for the sub resources is more 1624 * restricted. If you provide null or empty string as baseUrl, you won't be 1625 * able to access asset files. If the baseUrl is anything other than 1626 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1627 * sub resources. 1628 * 1629 * @param baseUrl Url to resolve relative paths with, if null defaults to 1630 * "about:blank" 1631 * @param data A String of data in the given encoding. 1632 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1633 * defaults to "text/html" 1634 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1635 * @param historyUrl URL to use as the history entry. Can be null. 1636 */ 1637 public void loadDataWithBaseURL(String baseUrl, String data, 1638 String mimeType, String encoding, String historyUrl) { 1639 1640 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1641 loadData(data, mimeType, encoding); 1642 return; 1643 } 1644 switchOutDrawHistory(); 1645 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1646 arg.mBaseUrl = baseUrl; 1647 arg.mData = data; 1648 arg.mMimeType = mimeType; 1649 arg.mEncoding = encoding; 1650 arg.mHistoryUrl = historyUrl; 1651 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1652 clearTextEntry(); 1653 } 1654 1655 /** 1656 * Saves the current view as a web archive. 1657 * 1658 * @param filename The filename where the archive should be placed. 1659 */ 1660 public void saveWebArchive(String filename) { 1661 saveWebArchive(filename, false, null); 1662 } 1663 1664 /* package */ static class SaveWebArchiveMessage { 1665 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1666 mBasename = basename; 1667 mAutoname = autoname; 1668 mCallback = callback; 1669 } 1670 1671 /* package */ final String mBasename; 1672 /* package */ final boolean mAutoname; 1673 /* package */ final ValueCallback<String> mCallback; 1674 /* package */ String mResultFile; 1675 } 1676 1677 /** 1678 * Saves the current view as a web archive. 1679 * 1680 * @param basename The filename where the archive should be placed. 1681 * @param autoname If false, takes basename to be a file. If true, basename 1682 * is assumed to be a directory in which a filename will be 1683 * chosen according to the url of the current page. 1684 * @param callback Called after the web archive has been saved. The 1685 * parameter for onReceiveValue will either be the filename 1686 * under which the file was saved, or null if saving the 1687 * file failed. 1688 */ 1689 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1690 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1691 new SaveWebArchiveMessage(basename, autoname, callback)); 1692 } 1693 1694 /** 1695 * Stop the current load. 1696 */ 1697 public void stopLoading() { 1698 // TODO: should we clear all the messages in the queue before sending 1699 // STOP_LOADING? 1700 switchOutDrawHistory(); 1701 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1702 } 1703 1704 /** 1705 * Reload the current url. 1706 */ 1707 public void reload() { 1708 clearTextEntry(); 1709 switchOutDrawHistory(); 1710 mWebViewCore.sendMessage(EventHub.RELOAD); 1711 } 1712 1713 /** 1714 * Return true if this WebView has a back history item. 1715 * @return True iff this WebView has a back history item. 1716 */ 1717 public boolean canGoBack() { 1718 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1719 synchronized (l) { 1720 if (l.getClearPending()) { 1721 return false; 1722 } else { 1723 return l.getCurrentIndex() > 0; 1724 } 1725 } 1726 } 1727 1728 /** 1729 * Go back in the history of this WebView. 1730 */ 1731 public void goBack() { 1732 goBackOrForward(-1); 1733 } 1734 1735 /** 1736 * Return true if this WebView has a forward history item. 1737 * @return True iff this Webview has a forward history item. 1738 */ 1739 public boolean canGoForward() { 1740 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1741 synchronized (l) { 1742 if (l.getClearPending()) { 1743 return false; 1744 } else { 1745 return l.getCurrentIndex() < l.getSize() - 1; 1746 } 1747 } 1748 } 1749 1750 /** 1751 * Go forward in the history of this WebView. 1752 */ 1753 public void goForward() { 1754 goBackOrForward(1); 1755 } 1756 1757 /** 1758 * Return true if the page can go back or forward the given 1759 * number of steps. 1760 * @param steps The negative or positive number of steps to move the 1761 * history. 1762 */ 1763 public boolean canGoBackOrForward(int steps) { 1764 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1765 synchronized (l) { 1766 if (l.getClearPending()) { 1767 return false; 1768 } else { 1769 int newIndex = l.getCurrentIndex() + steps; 1770 return newIndex >= 0 && newIndex < l.getSize(); 1771 } 1772 } 1773 } 1774 1775 /** 1776 * Go to the history item that is the number of steps away from 1777 * the current item. Steps is negative if backward and positive 1778 * if forward. 1779 * @param steps The number of steps to take back or forward in the back 1780 * forward list. 1781 */ 1782 public void goBackOrForward(int steps) { 1783 goBackOrForward(steps, false); 1784 } 1785 1786 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1787 if (steps != 0) { 1788 clearTextEntry(); 1789 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1790 ignoreSnapshot ? 1 : 0); 1791 } 1792 } 1793 1794 /** 1795 * Returns true if private browsing is enabled in this WebView. 1796 */ 1797 public boolean isPrivateBrowsingEnabled () { 1798 return getSettings().isPrivateBrowsingEnabled(); 1799 } 1800 1801 private void startPrivateBrowsing () { 1802 boolean wasPrivateBrowsingEnabled = isPrivateBrowsingEnabled(); 1803 1804 getSettings().setPrivateBrowsingEnabled(true); 1805 1806 if (!wasPrivateBrowsingEnabled) { 1807 loadUrl("browser:incognito"); 1808 } 1809 } 1810 1811 private boolean extendScroll(int y) { 1812 int finalY = mScroller.getFinalY(); 1813 int newY = pinLocY(finalY + y); 1814 if (newY == finalY) return false; 1815 mScroller.setFinalY(newY); 1816 mScroller.extendDuration(computeDuration(0, y)); 1817 return true; 1818 } 1819 1820 /** 1821 * Scroll the contents of the view up by half the view size 1822 * @param top true to jump to the top of the page 1823 * @return true if the page was scrolled 1824 */ 1825 public boolean pageUp(boolean top) { 1826 if (mNativeClass == 0) { 1827 return false; 1828 } 1829 nativeClearCursor(); // start next trackball movement from page edge 1830 if (top) { 1831 // go to the top of the document 1832 return pinScrollTo(mScrollX, 0, true, 0); 1833 } 1834 // Page up 1835 int h = getHeight(); 1836 int y; 1837 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1838 y = -h + PAGE_SCROLL_OVERLAP; 1839 } else { 1840 y = -h / 2; 1841 } 1842 mUserScroll = true; 1843 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1844 : extendScroll(y); 1845 } 1846 1847 /** 1848 * Scroll the contents of the view down by half the page size 1849 * @param bottom true to jump to bottom of page 1850 * @return true if the page was scrolled 1851 */ 1852 public boolean pageDown(boolean bottom) { 1853 if (mNativeClass == 0) { 1854 return false; 1855 } 1856 nativeClearCursor(); // start next trackball movement from page edge 1857 if (bottom) { 1858 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1859 } 1860 // Page down. 1861 int h = getHeight(); 1862 int y; 1863 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1864 y = h - PAGE_SCROLL_OVERLAP; 1865 } else { 1866 y = h / 2; 1867 } 1868 mUserScroll = true; 1869 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1870 : extendScroll(y); 1871 } 1872 1873 /** 1874 * Clear the view so that onDraw() will draw nothing but white background, 1875 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1876 */ 1877 public void clearView() { 1878 mContentWidth = 0; 1879 mContentHeight = 0; 1880 nativeSetBaseLayer(0); 1881 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1882 } 1883 1884 /** 1885 * Return a new picture that captures the current display of the webview. 1886 * This is a copy of the display, and will be unaffected if the webview 1887 * later loads a different URL. 1888 * 1889 * @return a picture containing the current contents of the view. Note this 1890 * picture is of the entire document, and is not restricted to the 1891 * bounds of the view. 1892 */ 1893 public Picture capturePicture() { 1894 Picture result = new Picture(); 1895 nativeCopyBaseContentToPicture(result); 1896 return result; 1897 } 1898 1899 /** 1900 * Return true if the browser is displaying a TextView for text input. 1901 */ 1902 private boolean inEditingMode() { 1903 return mWebTextView != null && mWebTextView.getParent() != null; 1904 } 1905 1906 /** 1907 * Remove the WebTextView. 1908 */ 1909 private void clearTextEntry() { 1910 if (inEditingMode()) { 1911 mWebTextView.remove(); 1912 } else { 1913 // The keyboard may be open with the WebView as the served view 1914 hideSoftKeyboard(); 1915 } 1916 } 1917 1918 /** 1919 * Return the current scale of the WebView 1920 * @return The current scale. 1921 */ 1922 public float getScale() { 1923 return mZoomManager.getScale(); 1924 } 1925 1926 /** 1927 * Set the initial scale for the WebView. 0 means default. If 1928 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1929 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1930 * WebView starts will this value as initial scale. 1931 * 1932 * @param scaleInPercent The initial scale in percent. 1933 */ 1934 public void setInitialScale(int scaleInPercent) { 1935 mZoomManager.setInitialScaleInPercent(scaleInPercent); 1936 } 1937 1938 /** 1939 * Invoke the graphical zoom picker widget for this WebView. This will 1940 * result in the zoom widget appearing on the screen to control the zoom 1941 * level of this WebView. 1942 */ 1943 public void invokeZoomPicker() { 1944 if (!getSettings().supportZoom()) { 1945 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1946 return; 1947 } 1948 clearTextEntry(); 1949 mZoomManager.invokeZoomPicker(); 1950 } 1951 1952 /** 1953 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1954 * is found and the anchor has a non-javascript url, the HitTestResult type 1955 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1956 * anchor does not have a url or if it is a javascript url, the type will 1957 * be UNKNOWN_TYPE and the url has to be retrieved through 1958 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1959 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1960 * the "extra" field. A type of 1961 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1962 * a child node. If a phone number is found, the HitTestResult type is set 1963 * to PHONE_TYPE and the phone number is set in the "extra" field of 1964 * HitTestResult. If a map address is found, the HitTestResult type is set 1965 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1966 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1967 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1968 * HitTestResult type is set to UNKNOWN_TYPE. 1969 */ 1970 public HitTestResult getHitTestResult() { 1971 if (mNativeClass == 0) { 1972 return null; 1973 } 1974 1975 HitTestResult result = new HitTestResult(); 1976 if (nativeHasCursorNode()) { 1977 if (nativeCursorIsTextInput()) { 1978 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1979 } else { 1980 String text = nativeCursorText(); 1981 if (text != null) { 1982 if (text.startsWith(SCHEME_TEL)) { 1983 result.setType(HitTestResult.PHONE_TYPE); 1984 result.setExtra(text.substring(SCHEME_TEL.length())); 1985 } else if (text.startsWith(SCHEME_MAILTO)) { 1986 result.setType(HitTestResult.EMAIL_TYPE); 1987 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1988 } else if (text.startsWith(SCHEME_GEO)) { 1989 result.setType(HitTestResult.GEO_TYPE); 1990 result.setExtra(URLDecoder.decode(text 1991 .substring(SCHEME_GEO.length()))); 1992 } else if (nativeCursorIsAnchor()) { 1993 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1994 result.setExtra(text); 1995 } 1996 } 1997 } 1998 } 1999 int type = result.getType(); 2000 if (type == HitTestResult.UNKNOWN_TYPE 2001 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2002 // Now check to see if it is an image. 2003 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2004 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2005 String text = nativeImageURI(contentX, contentY); 2006 if (text != null) { 2007 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2008 HitTestResult.IMAGE_TYPE : 2009 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2010 result.setExtra(text); 2011 } 2012 } 2013 return result; 2014 } 2015 2016 // Called by JNI when the DOM has changed the focus. Clear the focus so 2017 // that new keys will go to the newly focused field 2018 private void domChangedFocus() { 2019 if (inEditingMode()) { 2020 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2021 } 2022 } 2023 /** 2024 * Request the href of an anchor element due to getFocusNodePath returning 2025 * "href." If hrefMsg is null, this method returns immediately and does not 2026 * dispatch hrefMsg to its target. 2027 * 2028 * @param hrefMsg This message will be dispatched with the result of the 2029 * request as the data member with "url" as key. The result can 2030 * be null. 2031 */ 2032 // FIXME: API change required to change the name of this function. We now 2033 // look at the cursor node, and not the focus node. Also, what is 2034 // getFocusNodePath? 2035 public void requestFocusNodeHref(Message hrefMsg) { 2036 if (hrefMsg == null || mNativeClass == 0) { 2037 return; 2038 } 2039 if (nativeCursorIsAnchor()) { 2040 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2041 nativeCursorFramePointer(), nativeCursorNodePointer(), 2042 hrefMsg); 2043 } 2044 } 2045 2046 /** 2047 * Request the url of the image last touched by the user. msg will be sent 2048 * to its target with a String representing the url as its object. 2049 * 2050 * @param msg This message will be dispatched with the result of the request 2051 * as the data member with "url" as key. The result can be null. 2052 */ 2053 public void requestImageRef(Message msg) { 2054 if (0 == mNativeClass) return; // client isn't initialized 2055 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2056 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2057 String ref = nativeImageURI(contentX, contentY); 2058 Bundle data = msg.getData(); 2059 data.putString("url", ref); 2060 msg.setData(data); 2061 msg.sendToTarget(); 2062 } 2063 2064 static int pinLoc(int x, int viewMax, int docMax) { 2065// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2066 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2067 // pin the short document to the top/left of the screen 2068 x = 0; 2069// Log.d(LOGTAG, "--- center " + x); 2070 } else if (x < 0) { 2071 x = 0; 2072// Log.d(LOGTAG, "--- zero"); 2073 } else if (x + viewMax > docMax) { 2074 x = docMax - viewMax; 2075// Log.d(LOGTAG, "--- pin " + x); 2076 } 2077 return x; 2078 } 2079 2080 // Expects x in view coordinates 2081 int pinLocX(int x) { 2082 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 2083 } 2084 2085 // Expects y in view coordinates 2086 int pinLocY(int y) { 2087 return pinLoc(y, getViewHeightWithTitle(), 2088 computeVerticalScrollRange() + getTitleHeight()); 2089 } 2090 2091 /** 2092 * A title bar which is embedded in this WebView, and scrolls along with it 2093 * vertically, but not horizontally. 2094 */ 2095 private View mTitleBar; 2096 2097 /** 2098 * Since we draw the title bar ourselves, we removed the shadow from the 2099 * browser's activity. We do want a shadow at the bottom of the title bar, 2100 * or at the top of the screen if the title bar is not visible. This 2101 * drawable serves that purpose. 2102 */ 2103 private Drawable mTitleShadow; 2104 2105 /** 2106 * Add or remove a title bar to be embedded into the WebView, and scroll 2107 * along with it vertically, while remaining in view horizontally. Pass 2108 * null to remove the title bar from the WebView, and return to drawing 2109 * the WebView normally without translating to account for the title bar. 2110 * @hide 2111 */ 2112 public void setEmbeddedTitleBar(View v) { 2113 if (mTitleBar == v) return; 2114 if (mTitleBar != null) { 2115 removeView(mTitleBar); 2116 } 2117 if (null != v) { 2118 addView(v, new AbsoluteLayout.LayoutParams( 2119 ViewGroup.LayoutParams.MATCH_PARENT, 2120 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2121 if (mTitleShadow == null) { 2122 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 2123 com.android.internal.R.drawable.title_bar_shadow); 2124 } 2125 } 2126 mTitleBar = v; 2127 } 2128 2129 /** 2130 * Given a distance in view space, convert it to content space. Note: this 2131 * does not reflect translation, just scaling, so this should not be called 2132 * with coordinates, but should be called for dimensions like width or 2133 * height. 2134 */ 2135 private int viewToContentDimension(int d) { 2136 return Math.round(d * mZoomManager.getInvScale()); 2137 } 2138 2139 /** 2140 * Given an x coordinate in view space, convert it to content space. Also 2141 * may be used for absolute heights (such as for the WebTextView's 2142 * textSize, which is unaffected by the height of the title bar). 2143 */ 2144 /*package*/ int viewToContentX(int x) { 2145 return viewToContentDimension(x); 2146 } 2147 2148 /** 2149 * Given a y coordinate in view space, convert it to content space. 2150 * Takes into account the height of the title bar if there is one 2151 * embedded into the WebView. 2152 */ 2153 /*package*/ int viewToContentY(int y) { 2154 return viewToContentDimension(y - getTitleHeight()); 2155 } 2156 2157 /** 2158 * Given a x coordinate in view space, convert it to content space. 2159 * Returns the result as a float. 2160 */ 2161 private float viewToContentXf(int x) { 2162 return x * mZoomManager.getInvScale(); 2163 } 2164 2165 /** 2166 * Given a y coordinate in view space, convert it to content space. 2167 * Takes into account the height of the title bar if there is one 2168 * embedded into the WebView. Returns the result as a float. 2169 */ 2170 private float viewToContentYf(int y) { 2171 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2172 } 2173 2174 /** 2175 * Given a distance in content space, convert it to view space. Note: this 2176 * does not reflect translation, just scaling, so this should not be called 2177 * with coordinates, but should be called for dimensions like width or 2178 * height. 2179 */ 2180 /*package*/ int contentToViewDimension(int d) { 2181 return Math.round(d * mZoomManager.getScale()); 2182 } 2183 2184 /** 2185 * Given an x coordinate in content space, convert it to view 2186 * space. 2187 */ 2188 /*package*/ int contentToViewX(int x) { 2189 return contentToViewDimension(x); 2190 } 2191 2192 /** 2193 * Given a y coordinate in content space, convert it to view 2194 * space. Takes into account the height of the title bar. 2195 */ 2196 /*package*/ int contentToViewY(int y) { 2197 return contentToViewDimension(y) + getTitleHeight(); 2198 } 2199 2200 private Rect contentToViewRect(Rect x) { 2201 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2202 contentToViewX(x.right), contentToViewY(x.bottom)); 2203 } 2204 2205 /* To invalidate a rectangle in content coordinates, we need to transform 2206 the rect into view coordinates, so we can then call invalidate(...). 2207 2208 Normally, we would just call contentToView[XY](...), which eventually 2209 calls Math.round(coordinate * mActualScale). However, for invalidates, 2210 we need to account for the slop that occurs with antialiasing. To 2211 address that, we are a little more liberal in the size of the rect that 2212 we invalidate. 2213 2214 This liberal calculation calls floor() for the top/left, and ceil() for 2215 the bottom/right coordinates. This catches the possible extra pixels of 2216 antialiasing that we might have missed with just round(). 2217 */ 2218 2219 // Called by JNI to invalidate the View, given rectangle coordinates in 2220 // content space 2221 private void viewInvalidate(int l, int t, int r, int b) { 2222 final float scale = mZoomManager.getScale(); 2223 final int dy = getTitleHeight(); 2224 invalidate((int)Math.floor(l * scale), 2225 (int)Math.floor(t * scale) + dy, 2226 (int)Math.ceil(r * scale), 2227 (int)Math.ceil(b * scale) + dy); 2228 } 2229 2230 // Called by JNI to invalidate the View after a delay, given rectangle 2231 // coordinates in content space 2232 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2233 final float scale = mZoomManager.getScale(); 2234 final int dy = getTitleHeight(); 2235 postInvalidateDelayed(delay, 2236 (int)Math.floor(l * scale), 2237 (int)Math.floor(t * scale) + dy, 2238 (int)Math.ceil(r * scale), 2239 (int)Math.ceil(b * scale) + dy); 2240 } 2241 2242 private void invalidateContentRect(Rect r) { 2243 viewInvalidate(r.left, r.top, r.right, r.bottom); 2244 } 2245 2246 // stop the scroll animation, and don't let a subsequent fling add 2247 // to the existing velocity 2248 private void abortAnimation() { 2249 mScroller.abortAnimation(); 2250 mLastVelocity = 0; 2251 } 2252 2253 /* call from webcoreview.draw(), so we're still executing in the UI thread 2254 */ 2255 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2256 2257 // premature data from webkit, ignore 2258 if ((w | h) == 0) { 2259 return; 2260 } 2261 2262 // don't abort a scroll animation if we didn't change anything 2263 if (mContentWidth != w || mContentHeight != h) { 2264 // record new dimensions 2265 mContentWidth = w; 2266 mContentHeight = h; 2267 // If history Picture is drawn, don't update scroll. They will be 2268 // updated when we get out of that mode. 2269 if (!mDrawHistory) { 2270 // repin our scroll, taking into account the new content size 2271 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2272 if (!mScroller.isFinished()) { 2273 // We are in the middle of a scroll. Repin the final scroll 2274 // position. 2275 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2276 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2277 } 2278 } 2279 } 2280 contentSizeChanged(updateLayout); 2281 } 2282 2283 // Used to avoid sending many visible rect messages. 2284 private Rect mLastVisibleRectSent; 2285 private Rect mLastGlobalRect; 2286 2287 Rect sendOurVisibleRect() { 2288 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2289 2290 Rect rect = new Rect(); 2291 calcOurContentVisibleRect(rect); 2292 // Rect.equals() checks for null input. 2293 if (!rect.equals(mLastVisibleRectSent)) { 2294 Point pos = new Point(rect.left, rect.top); 2295 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2296 nativeMoveGeneration(), 0, pos); 2297 mLastVisibleRectSent = rect; 2298 } 2299 Rect globalRect = new Rect(); 2300 if (getGlobalVisibleRect(globalRect) 2301 && !globalRect.equals(mLastGlobalRect)) { 2302 if (DebugFlags.WEB_VIEW) { 2303 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2304 + globalRect.top + ",r=" + globalRect.right + ",b=" 2305 + globalRect.bottom); 2306 } 2307 // TODO: the global offset is only used by windowRect() 2308 // in ChromeClientAndroid ; other clients such as touch 2309 // and mouse events could return view + screen relative points. 2310 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2311 mLastGlobalRect = globalRect; 2312 } 2313 return rect; 2314 } 2315 2316 // Sets r to be the visible rectangle of our webview in view coordinates 2317 private void calcOurVisibleRect(Rect r) { 2318 Point p = new Point(); 2319 getGlobalVisibleRect(r, p); 2320 r.offset(-p.x, -p.y); 2321 } 2322 2323 // Sets r to be our visible rectangle in content coordinates 2324 private void calcOurContentVisibleRect(Rect r) { 2325 calcOurVisibleRect(r); 2326 // pin the rect to the bounds of the content 2327 r.left = Math.max(viewToContentX(r.left), 0); 2328 // viewToContentY will remove the total height of the title bar. Add 2329 // the visible height back in to account for the fact that if the title 2330 // bar is partially visible, the part of the visible rect which is 2331 // displaying our content is displaced by that amount. 2332 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2333 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2334 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2335 } 2336 2337 // Sets r to be our visible rectangle in content coordinates. We use this 2338 // method on the native side to compute the position of the fixed layers. 2339 // Uses floating coordinates (necessary to correctly place elements when 2340 // the scale factor is not 1) 2341 private void calcOurContentVisibleRectF(RectF r) { 2342 Rect ri = new Rect(0,0,0,0); 2343 calcOurVisibleRect(ri); 2344 // pin the rect to the bounds of the content 2345 r.left = Math.max(viewToContentXf(ri.left), 0.0f); 2346 // viewToContentY will remove the total height of the title bar. Add 2347 // the visible height back in to account for the fact that if the title 2348 // bar is partially visible, the part of the visible rect which is 2349 // displaying our content is displaced by that amount. 2350 r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f); 2351 r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth); 2352 r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight); 2353 } 2354 2355 static class ViewSizeData { 2356 int mWidth; 2357 int mHeight; 2358 int mTextWrapWidth; 2359 int mAnchorX; 2360 int mAnchorY; 2361 float mScale; 2362 boolean mIgnoreHeight; 2363 } 2364 2365 /** 2366 * Compute unzoomed width and height, and if they differ from the last 2367 * values we sent, send them to webkit (to be used as new viewport) 2368 * 2369 * @param force ensures that the message is sent to webkit even if the width 2370 * or height has not changed since the last message 2371 * 2372 * @return true if new values were sent 2373 */ 2374 boolean sendViewSizeZoom(boolean force) { 2375 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2376 2377 int viewWidth = getViewWidth(); 2378 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2379 int newHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2380 /* 2381 * Because the native side may have already done a layout before the 2382 * View system was able to measure us, we have to send a height of 0 to 2383 * remove excess whitespace when we grow our width. This will trigger a 2384 * layout and a change in content size. This content size change will 2385 * mean that contentSizeChanged will either call this method directly or 2386 * indirectly from onSizeChanged. 2387 */ 2388 if (newWidth > mLastWidthSent && mWrapContent) { 2389 newHeight = 0; 2390 } 2391 // Avoid sending another message if the dimensions have not changed. 2392 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force) { 2393 ViewSizeData data = new ViewSizeData(); 2394 data.mWidth = newWidth; 2395 data.mHeight = newHeight; 2396 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2397 data.mScale = mZoomManager.getScale(); 2398 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2399 && !mHeightCanMeasure; 2400 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2401 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2402 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2403 mLastWidthSent = newWidth; 2404 mLastHeightSent = newHeight; 2405 mZoomManager.clearDocumentAnchor(); 2406 return true; 2407 } 2408 return false; 2409 } 2410 2411 @Override 2412 protected int computeHorizontalScrollRange() { 2413 if (mDrawHistory) { 2414 return mHistoryWidth; 2415 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2416 && !mZoomManager.canZoomOut()) { 2417 // only honor the scrollbar mode when it is at minimum zoom level 2418 return computeHorizontalScrollExtent(); 2419 } else { 2420 // to avoid rounding error caused unnecessary scrollbar, use floor 2421 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2422 } 2423 } 2424 2425 @Override 2426 protected int computeVerticalScrollRange() { 2427 if (mDrawHistory) { 2428 return mHistoryHeight; 2429 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2430 && !mZoomManager.canZoomOut()) { 2431 // only honor the scrollbar mode when it is at minimum zoom level 2432 return computeVerticalScrollExtent(); 2433 } else { 2434 // to avoid rounding error caused unnecessary scrollbar, use floor 2435 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2436 } 2437 } 2438 2439 @Override 2440 protected int computeVerticalScrollOffset() { 2441 return Math.max(mScrollY - getTitleHeight(), 0); 2442 } 2443 2444 @Override 2445 protected int computeVerticalScrollExtent() { 2446 return getViewHeight(); 2447 } 2448 2449 /** @hide */ 2450 @Override 2451 protected void onDrawVerticalScrollBar(Canvas canvas, 2452 Drawable scrollBar, 2453 int l, int t, int r, int b) { 2454 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2455 scrollBar.draw(canvas); 2456 } 2457 2458 /** 2459 * Get the url for the current page. This is not always the same as the url 2460 * passed to WebViewClient.onPageStarted because although the load for 2461 * that url has begun, the current page may not have changed. 2462 * @return The url for the current page. 2463 */ 2464 public String getUrl() { 2465 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2466 return h != null ? h.getUrl() : null; 2467 } 2468 2469 /** 2470 * Get the original url for the current page. This is not always the same 2471 * as the url passed to WebViewClient.onPageStarted because although the 2472 * load for that url has begun, the current page may not have changed. 2473 * Also, there may have been redirects resulting in a different url to that 2474 * originally requested. 2475 * @return The url that was originally requested for the current page. 2476 */ 2477 public String getOriginalUrl() { 2478 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2479 return h != null ? h.getOriginalUrl() : null; 2480 } 2481 2482 /** 2483 * Get the title for the current page. This is the title of the current page 2484 * until WebViewClient.onReceivedTitle is called. 2485 * @return The title for the current page. 2486 */ 2487 public String getTitle() { 2488 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2489 return h != null ? h.getTitle() : null; 2490 } 2491 2492 /** 2493 * Get the favicon for the current page. This is the favicon of the current 2494 * page until WebViewClient.onReceivedIcon is called. 2495 * @return The favicon for the current page. 2496 */ 2497 public Bitmap getFavicon() { 2498 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2499 return h != null ? h.getFavicon() : null; 2500 } 2501 2502 /** 2503 * Get the touch icon url for the apple-touch-icon <link> element, or 2504 * a URL on this site's server pointing to the standard location of a 2505 * touch icon. 2506 * @hide 2507 */ 2508 public String getTouchIconUrl() { 2509 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2510 return h != null ? h.getTouchIconUrl() : null; 2511 } 2512 2513 /** 2514 * Get the progress for the current page. 2515 * @return The progress for the current page between 0 and 100. 2516 */ 2517 public int getProgress() { 2518 return mCallbackProxy.getProgress(); 2519 } 2520 2521 /** 2522 * @return the height of the HTML content. 2523 */ 2524 public int getContentHeight() { 2525 return mContentHeight; 2526 } 2527 2528 /** 2529 * @return the width of the HTML content. 2530 * @hide 2531 */ 2532 public int getContentWidth() { 2533 return mContentWidth; 2534 } 2535 2536 /** 2537 * Pause all layout, parsing, and javascript timers for all webviews. This 2538 * is a global requests, not restricted to just this webview. This can be 2539 * useful if the application has been paused. 2540 */ 2541 public void pauseTimers() { 2542 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2543 } 2544 2545 /** 2546 * Resume all layout, parsing, and javascript timers for all webviews. 2547 * This will resume dispatching all timers. 2548 */ 2549 public void resumeTimers() { 2550 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2551 } 2552 2553 /** 2554 * Call this to pause any extra processing associated with this view and 2555 * its associated DOM/plugins/javascript/etc. For example, if the view is 2556 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2557 * network traffic. When the view is again "active", call onResume(). 2558 * 2559 * Note that this differs from pauseTimers(), which affects all views/DOMs 2560 * @hide 2561 */ 2562 public void onPause() { 2563 if (!mIsPaused) { 2564 mIsPaused = true; 2565 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2566 } 2567 } 2568 2569 /** 2570 * Call this to balanace a previous call to onPause() 2571 * @hide 2572 */ 2573 public void onResume() { 2574 if (mIsPaused) { 2575 mIsPaused = false; 2576 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2577 } 2578 } 2579 2580 /** 2581 * Returns true if the view is paused, meaning onPause() was called. Calling 2582 * onResume() sets the paused state back to false. 2583 * @hide 2584 */ 2585 public boolean isPaused() { 2586 return mIsPaused; 2587 } 2588 2589 /** 2590 * Call this to inform the view that memory is low so that it can 2591 * free any available memory. 2592 */ 2593 public void freeMemory() { 2594 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2595 } 2596 2597 /** 2598 * Clear the resource cache. Note that the cache is per-application, so 2599 * this will clear the cache for all WebViews used. 2600 * 2601 * @param includeDiskFiles If false, only the RAM cache is cleared. 2602 */ 2603 public void clearCache(boolean includeDiskFiles) { 2604 // Note: this really needs to be a static method as it clears cache for all 2605 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2606 // we can't make this static. 2607 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2608 includeDiskFiles ? 1 : 0, 0); 2609 } 2610 2611 /** 2612 * Make sure that clearing the form data removes the adapter from the 2613 * currently focused textfield if there is one. 2614 */ 2615 public void clearFormData() { 2616 if (inEditingMode()) { 2617 AutoCompleteAdapter adapter = null; 2618 mWebTextView.setAdapterCustom(adapter); 2619 } 2620 } 2621 2622 /** 2623 * Tell the WebView to clear its internal back/forward list. 2624 */ 2625 public void clearHistory() { 2626 mCallbackProxy.getBackForwardList().setClearPending(); 2627 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2628 } 2629 2630 /** 2631 * Clear the SSL preferences table stored in response to proceeding with SSL 2632 * certificate errors. 2633 */ 2634 public void clearSslPreferences() { 2635 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2636 } 2637 2638 /** 2639 * Return the WebBackForwardList for this WebView. This contains the 2640 * back/forward list for use in querying each item in the history stack. 2641 * This is a copy of the private WebBackForwardList so it contains only a 2642 * snapshot of the current state. Multiple calls to this method may return 2643 * different objects. The object returned from this method will not be 2644 * updated to reflect any new state. 2645 */ 2646 public WebBackForwardList copyBackForwardList() { 2647 return mCallbackProxy.getBackForwardList().clone(); 2648 } 2649 2650 /* 2651 * Highlight and scroll to the next occurance of String in findAll. 2652 * Wraps the page infinitely, and scrolls. Must be called after 2653 * calling findAll. 2654 * 2655 * @param forward Direction to search. 2656 */ 2657 public void findNext(boolean forward) { 2658 if (0 == mNativeClass) return; // client isn't initialized 2659 nativeFindNext(forward); 2660 } 2661 2662 /* 2663 * Find all instances of find on the page and highlight them. 2664 * @param find String to find. 2665 * @return int The number of occurances of the String "find" 2666 * that were found. 2667 */ 2668 public int findAll(String find) { 2669 if (0 == mNativeClass) return 0; // client isn't initialized 2670 int result = find != null ? nativeFindAll(find.toLowerCase(), 2671 find.toUpperCase()) : 0; 2672 invalidate(); 2673 mLastFind = find; 2674 return result; 2675 } 2676 2677 /** 2678 * @hide 2679 */ 2680 public void setFindIsUp(boolean isUp) { 2681 mFindIsUp = isUp; 2682 if (0 == mNativeClass) return; // client isn't initialized 2683 nativeSetFindIsUp(isUp); 2684 } 2685 2686 /** 2687 * @hide 2688 */ 2689 public int findIndex() { 2690 if (0 == mNativeClass) return -1; 2691 return nativeFindIndex(); 2692 } 2693 2694 // Used to know whether the find dialog is open. Affects whether 2695 // or not we draw the highlights for matches. 2696 private boolean mFindIsUp; 2697 2698 // Keep track of the last string sent, so we can search again after an 2699 // orientation change or the dismissal of the soft keyboard. 2700 private String mLastFind; 2701 2702 /** 2703 * Return the first substring consisting of the address of a physical 2704 * location. Currently, only addresses in the United States are detected, 2705 * and consist of: 2706 * - a house number 2707 * - a street name 2708 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2709 * - a city name 2710 * - a state or territory, either spelled out or two-letter abbr. 2711 * - an optional 5 digit or 9 digit zip code. 2712 * 2713 * All names must be correctly capitalized, and the zip code, if present, 2714 * must be valid for the state. The street type must be a standard USPS 2715 * spelling or abbreviation. The state or territory must also be spelled 2716 * or abbreviated using USPS standards. The house number may not exceed 2717 * five digits. 2718 * @param addr The string to search for addresses. 2719 * 2720 * @return the address, or if no address is found, return null. 2721 */ 2722 public static String findAddress(String addr) { 2723 return findAddress(addr, false); 2724 } 2725 2726 /** 2727 * @hide 2728 * Return the first substring consisting of the address of a physical 2729 * location. Currently, only addresses in the United States are detected, 2730 * and consist of: 2731 * - a house number 2732 * - a street name 2733 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2734 * - a city name 2735 * - a state or territory, either spelled out or two-letter abbr. 2736 * - an optional 5 digit or 9 digit zip code. 2737 * 2738 * Names are optionally capitalized, and the zip code, if present, 2739 * must be valid for the state. The street type must be a standard USPS 2740 * spelling or abbreviation. The state or territory must also be spelled 2741 * or abbreviated using USPS standards. The house number may not exceed 2742 * five digits. 2743 * @param addr The string to search for addresses. 2744 * @param caseInsensitive addr Set to true to make search ignore case. 2745 * 2746 * @return the address, or if no address is found, return null. 2747 */ 2748 public static String findAddress(String addr, boolean caseInsensitive) { 2749 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2750 } 2751 2752 /* 2753 * Clear the highlighting surrounding text matches created by findAll. 2754 */ 2755 public void clearMatches() { 2756 mLastFind = ""; 2757 if (mNativeClass == 0) 2758 return; 2759 nativeSetFindIsEmpty(); 2760 invalidate(); 2761 } 2762 2763 /** 2764 * @hide 2765 */ 2766 public void notifyFindDialogDismissed() { 2767 if (mWebViewCore == null) { 2768 return; 2769 } 2770 clearMatches(); 2771 setFindIsUp(false); 2772 // Now that the dialog has been removed, ensure that we scroll to a 2773 // location that is not beyond the end of the page. 2774 pinScrollTo(mScrollX, mScrollY, false, 0); 2775 invalidate(); 2776 } 2777 2778 /** 2779 * Query the document to see if it contains any image references. The 2780 * message object will be dispatched with arg1 being set to 1 if images 2781 * were found and 0 if the document does not reference any images. 2782 * @param response The message that will be dispatched with the result. 2783 */ 2784 public void documentHasImages(Message response) { 2785 if (response == null) { 2786 return; 2787 } 2788 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2789 } 2790 2791 /** 2792 * Request the scroller to abort any ongoing animation 2793 * 2794 * @hide 2795 */ 2796 public void stopScroll() { 2797 mScroller.forceFinished(true); 2798 mLastVelocity = 0; 2799 } 2800 2801 @Override 2802 public void computeScroll() { 2803 if (mScroller.computeScrollOffset()) { 2804 int oldX = mScrollX; 2805 int oldY = mScrollY; 2806 mScrollX = mScroller.getCurrX(); 2807 mScrollY = mScroller.getCurrY(); 2808 postInvalidate(); // So we draw again 2809 if (oldX != mScrollX || oldY != mScrollY) { 2810 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2811 } else { 2812 abortAnimation(); 2813 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 2814 WebViewCore.resumePriority(); 2815 WebViewCore.resumeUpdatePicture(mWebViewCore); 2816 } 2817 } else { 2818 super.computeScroll(); 2819 } 2820 } 2821 2822 private static int computeDuration(int dx, int dy) { 2823 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2824 int duration = distance * 1000 / STD_SPEED; 2825 return Math.min(duration, MAX_DURATION); 2826 } 2827 2828 // helper to pin the scrollBy parameters (already in view coordinates) 2829 // returns true if the scroll was changed 2830 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2831 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2832 } 2833 // helper to pin the scrollTo parameters (already in view coordinates) 2834 // returns true if the scroll was changed 2835 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2836 x = pinLocX(x); 2837 y = pinLocY(y); 2838 int dx = x - mScrollX; 2839 int dy = y - mScrollY; 2840 2841 if ((dx | dy) == 0) { 2842 return false; 2843 } 2844 if (animate) { 2845 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2846 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2847 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2848 awakenScrollBars(mScroller.getDuration()); 2849 invalidate(); 2850 } else { 2851 abortAnimation(); // just in case 2852 scrollTo(x, y); 2853 } 2854 return true; 2855 } 2856 2857 // Scale from content to view coordinates, and pin. 2858 // Also called by jni webview.cpp 2859 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2860 if (mDrawHistory) { 2861 // disallow WebView to change the scroll position as History Picture 2862 // is used in the view system. 2863 // TODO: as we switchOutDrawHistory when trackball or navigation 2864 // keys are hit, this should be safe. Right? 2865 return false; 2866 } 2867 cx = contentToViewDimension(cx); 2868 cy = contentToViewDimension(cy); 2869 if (mHeightCanMeasure) { 2870 // move our visible rect according to scroll request 2871 if (cy != 0) { 2872 Rect tempRect = new Rect(); 2873 calcOurVisibleRect(tempRect); 2874 tempRect.offset(cx, cy); 2875 requestRectangleOnScreen(tempRect); 2876 } 2877 // FIXME: We scroll horizontally no matter what because currently 2878 // ScrollView and ListView will not scroll horizontally. 2879 // FIXME: Why do we only scroll horizontally if there is no 2880 // vertical scroll? 2881// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2882 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2883 } else { 2884 return pinScrollBy(cx, cy, animate, 0); 2885 } 2886 } 2887 2888 /** 2889 * Called by CallbackProxy when the page finishes loading. 2890 * @param url The URL of the page which has finished loading. 2891 */ 2892 /* package */ void onPageFinished(String url) { 2893 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2894 // If the user is now on a different page, or has scrolled the page 2895 // past the point where the title bar is offscreen, ignore the 2896 // scroll request. 2897 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2898 && mScrollX == 0 && mScrollY == 0) { 2899 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2900 SLIDE_TITLE_DURATION); 2901 } 2902 mPageThatNeedsToSlideTitleBarOffScreen = null; 2903 } 2904 2905 injectAccessibilityForUrl(url); 2906 } 2907 2908 /** 2909 * This method injects accessibility in the loaded document if accessibility 2910 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 2911 * If no URL specific script is found or JavaScript is disabled we fallback to 2912 * the default {@link AccessibilityInjector} implementation. 2913 * 2914 * @param url The URL loaded by this {@link WebView}. 2915 */ 2916 private void injectAccessibilityForUrl(String url) { 2917 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 2918 if (getSettings().getJavaScriptEnabled()) { 2919 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 2920 } else if (mAccessibilityInjector == null) { 2921 mAccessibilityInjector = new AccessibilityInjector(this); 2922 } 2923 } else { 2924 // it is possible that accessibility was turned off between reloads 2925 mAccessibilityInjector = null; 2926 } 2927 } 2928 2929 /** 2930 * The URL of a page that sent a message to scroll the title bar off screen. 2931 * 2932 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2933 * title bar off the screen. Sometimes, the scroll position is set before 2934 * the page finishes loading. Rather than scrolling while the page is still 2935 * loading, keep track of the URL and new scroll position so we can perform 2936 * the scroll once the page finishes loading. 2937 */ 2938 private String mPageThatNeedsToSlideTitleBarOffScreen; 2939 2940 /** 2941 * The destination Y scroll position to be used when the page finishes 2942 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2943 */ 2944 private int mYDistanceToSlideTitleOffScreen; 2945 2946 // scale from content to view coordinates, and pin 2947 // return true if pin caused the final x/y different than the request cx/cy, 2948 // and a future scroll may reach the request cx/cy after our size has 2949 // changed 2950 // return false if the view scroll to the exact position as it is requested, 2951 // where negative numbers are taken to mean 0 2952 private boolean setContentScrollTo(int cx, int cy) { 2953 if (mDrawHistory) { 2954 // disallow WebView to change the scroll position as History Picture 2955 // is used in the view system. 2956 // One known case where this is called is that WebCore tries to 2957 // restore the scroll position. As history Picture already uses the 2958 // saved scroll position, it is ok to skip this. 2959 return false; 2960 } 2961 int vx; 2962 int vy; 2963 if ((cx | cy) == 0) { 2964 // If the page is being scrolled to (0,0), do not add in the title 2965 // bar's height, and simply scroll to (0,0). (The only other work 2966 // in contentToView_ is to multiply, so this would not change 0.) 2967 vx = 0; 2968 vy = 0; 2969 } else { 2970 vx = contentToViewX(cx); 2971 vy = contentToViewY(cy); 2972 } 2973// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2974// vx + " " + vy + "]"); 2975 // Some mobile sites attempt to scroll the title bar off the page by 2976 // scrolling to (0,1). If we are at the top left corner of the 2977 // page, assume this is an attempt to scroll off the title bar, and 2978 // animate the title bar off screen slowly enough that the user can see 2979 // it. 2980 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2981 && mTitleBar != null) { 2982 // FIXME: 100 should be defined somewhere as our max progress. 2983 if (getProgress() < 100) { 2984 // Wait to scroll the title bar off screen until the page has 2985 // finished loading. Keep track of the URL and the destination 2986 // Y position 2987 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2988 mYDistanceToSlideTitleOffScreen = vy; 2989 } else { 2990 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2991 } 2992 // Since we are animating, we have not yet reached the desired 2993 // scroll position. Do not return true to request another attempt 2994 return false; 2995 } 2996 pinScrollTo(vx, vy, false, 0); 2997 // If the request was to scroll to a negative coordinate, treat it as if 2998 // it was a request to scroll to 0 2999 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3000 return true; 3001 } else { 3002 return false; 3003 } 3004 } 3005 3006 // scale from content to view coordinates, and pin 3007 private void spawnContentScrollTo(int cx, int cy) { 3008 if (mDrawHistory) { 3009 // disallow WebView to change the scroll position as History Picture 3010 // is used in the view system. 3011 return; 3012 } 3013 int vx = contentToViewX(cx); 3014 int vy = contentToViewY(cy); 3015 pinScrollTo(vx, vy, true, 0); 3016 } 3017 3018 /** 3019 * These are from webkit, and are in content coordinate system (unzoomed) 3020 */ 3021 private void contentSizeChanged(boolean updateLayout) { 3022 // suppress 0,0 since we usually see real dimensions soon after 3023 // this avoids drawing the prev content in a funny place. If we find a 3024 // way to consolidate these notifications, this check may become 3025 // obsolete 3026 if ((mContentWidth | mContentHeight) == 0) { 3027 return; 3028 } 3029 3030 if (mHeightCanMeasure) { 3031 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3032 || updateLayout) { 3033 requestLayout(); 3034 } 3035 } else if (mWidthCanMeasure) { 3036 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3037 || updateLayout) { 3038 requestLayout(); 3039 } 3040 } else { 3041 // If we don't request a layout, try to send our view size to the 3042 // native side to ensure that WebCore has the correct dimensions. 3043 sendViewSizeZoom(false); 3044 } 3045 } 3046 3047 /** 3048 * Set the WebViewClient that will receive various notifications and 3049 * requests. This will replace the current handler. 3050 * @param client An implementation of WebViewClient. 3051 */ 3052 public void setWebViewClient(WebViewClient client) { 3053 mCallbackProxy.setWebViewClient(client); 3054 } 3055 3056 /** 3057 * Gets the WebViewClient 3058 * @return the current WebViewClient instance. 3059 * 3060 *@hide pending API council approval. 3061 */ 3062 public WebViewClient getWebViewClient() { 3063 return mCallbackProxy.getWebViewClient(); 3064 } 3065 3066 /** 3067 * Register the interface to be used when content can not be handled by 3068 * the rendering engine, and should be downloaded instead. This will replace 3069 * the current handler. 3070 * @param listener An implementation of DownloadListener. 3071 */ 3072 public void setDownloadListener(DownloadListener listener) { 3073 mCallbackProxy.setDownloadListener(listener); 3074 } 3075 3076 /** 3077 * Set the chrome handler. This is an implementation of WebChromeClient for 3078 * use in handling Javascript dialogs, favicons, titles, and the progress. 3079 * This will replace the current handler. 3080 * @param client An implementation of WebChromeClient. 3081 */ 3082 public void setWebChromeClient(WebChromeClient client) { 3083 mCallbackProxy.setWebChromeClient(client); 3084 } 3085 3086 /** 3087 * Gets the chrome handler. 3088 * @return the current WebChromeClient instance. 3089 * 3090 * @hide API council approval. 3091 */ 3092 public WebChromeClient getWebChromeClient() { 3093 return mCallbackProxy.getWebChromeClient(); 3094 } 3095 3096 /** 3097 * Set the back/forward list client. This is an implementation of 3098 * WebBackForwardListClient for handling new items and changes in the 3099 * history index. 3100 * @param client An implementation of WebBackForwardListClient. 3101 * {@hide} 3102 */ 3103 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3104 mCallbackProxy.setWebBackForwardListClient(client); 3105 } 3106 3107 /** 3108 * Gets the WebBackForwardListClient. 3109 * {@hide} 3110 */ 3111 public WebBackForwardListClient getWebBackForwardListClient() { 3112 return mCallbackProxy.getWebBackForwardListClient(); 3113 } 3114 3115 /** 3116 * Set the Picture listener. This is an interface used to receive 3117 * notifications of a new Picture. 3118 * @param listener An implementation of WebView.PictureListener. 3119 */ 3120 public void setPictureListener(PictureListener listener) { 3121 mPictureListener = listener; 3122 } 3123 3124 /** 3125 * {@hide} 3126 */ 3127 /* FIXME: Debug only! Remove for SDK! */ 3128 public void externalRepresentation(Message callback) { 3129 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3130 } 3131 3132 /** 3133 * {@hide} 3134 */ 3135 /* FIXME: Debug only! Remove for SDK! */ 3136 public void documentAsText(Message callback) { 3137 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3138 } 3139 3140 /** 3141 * Use this function to bind an object to Javascript so that the 3142 * methods can be accessed from Javascript. 3143 * <p><strong>IMPORTANT:</strong> 3144 * <ul> 3145 * <li> Using addJavascriptInterface() allows JavaScript to control your 3146 * application. This can be a very useful feature or a dangerous security 3147 * issue. When the HTML in the WebView is untrustworthy (for example, part 3148 * or all of the HTML is provided by some person or process), then an 3149 * attacker could inject HTML that will execute your code and possibly any 3150 * code of the attacker's choosing.<br> 3151 * Do not use addJavascriptInterface() unless all of the HTML in this 3152 * WebView was written by you.</li> 3153 * <li> The Java object that is bound runs in another thread and not in 3154 * the thread that it was constructed in.</li> 3155 * </ul></p> 3156 * @param obj The class instance to bind to Javascript 3157 * @param interfaceName The name to used to expose the class in Javascript 3158 */ 3159 public void addJavascriptInterface(Object obj, String interfaceName) { 3160 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3161 arg.mObject = obj; 3162 arg.mInterfaceName = interfaceName; 3163 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3164 } 3165 3166 /** 3167 * Return the WebSettings object used to control the settings for this 3168 * WebView. 3169 * @return A WebSettings object that can be used to control this WebView's 3170 * settings. 3171 */ 3172 public WebSettings getSettings() { 3173 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3174 } 3175 3176 /** 3177 * Return the list of currently loaded plugins. 3178 * @return The list of currently loaded plugins. 3179 * 3180 * @deprecated This was used for Gears, which has been deprecated. 3181 */ 3182 @Deprecated 3183 public static synchronized PluginList getPluginList() { 3184 return new PluginList(); 3185 } 3186 3187 /** 3188 * @deprecated This was used for Gears, which has been deprecated. 3189 */ 3190 @Deprecated 3191 public void refreshPlugins(boolean reloadOpenPages) { } 3192 3193 //------------------------------------------------------------------------- 3194 // Override View methods 3195 //------------------------------------------------------------------------- 3196 3197 @Override 3198 protected void finalize() throws Throwable { 3199 try { 3200 destroy(); 3201 } finally { 3202 super.finalize(); 3203 } 3204 } 3205 3206 @Override 3207 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3208 if (child == mTitleBar) { 3209 // When drawing the title bar, move it horizontally to always show 3210 // at the top of the WebView. 3211 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3212 } 3213 return super.drawChild(canvas, child, drawingTime); 3214 } 3215 3216 private void drawContent(Canvas canvas) { 3217 // Update the buttons in the picture, so when we draw the picture 3218 // to the screen, they are in the correct state. 3219 // Tell the native side if user is a) touching the screen, 3220 // b) pressing the trackball down, or c) pressing the enter key 3221 // If the cursor is on a button, we need to draw it in the pressed 3222 // state. 3223 // If mNativeClass is 0, we should not reach here, so we do not 3224 // need to check it again. 3225 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3226 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3227 || mTrackballDown || mGotCenterDown, false); 3228 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3229 } 3230 3231 @Override 3232 protected void onDraw(Canvas canvas) { 3233 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3234 if (mNativeClass == 0) { 3235 return; 3236 } 3237 3238 // if both mContentWidth and mContentHeight are 0, it means there is no 3239 // valid Picture passed to WebView yet. This can happen when WebView 3240 // just starts. Draw the background and return. 3241 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3242 canvas.drawColor(mBackgroundColor); 3243 return; 3244 } 3245 3246 int saveCount = canvas.save(); 3247 if (mTitleBar != null) { 3248 canvas.translate(0, (int) mTitleBar.getHeight()); 3249 } 3250 if (mDragTrackerHandler == null) { 3251 drawContent(canvas); 3252 } else { 3253 if (!mDragTrackerHandler.draw(canvas)) { 3254 // sometimes the tracker doesn't draw, even though its active 3255 drawContent(canvas); 3256 } 3257 if (mDragTrackerHandler.isFinished()) { 3258 mDragTrackerHandler = null; 3259 } 3260 } 3261 canvas.restoreToCount(saveCount); 3262 3263 // Now draw the shadow. 3264 int titleH = getVisibleTitleHeight(); 3265 if (mTitleBar != null && titleH == 0) { 3266 int height = (int) (5f * getContext().getResources() 3267 .getDisplayMetrics().density); 3268 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3269 mScrollY + height); 3270 mTitleShadow.draw(canvas); 3271 } 3272 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3273 invalidate(); 3274 } 3275 if (inEditingMode()) mWebTextView.onDrawSubstitute(); 3276 mWebViewCore.signalRepaintDone(); 3277 3278 // paint the highlight in the end 3279 if (!mTouchHighlightRegion.isEmpty()) { 3280 if (mTouchHightlightPaint == null) { 3281 mTouchHightlightPaint = new Paint(); 3282 mTouchHightlightPaint.setColor(mHightlightColor); 3283 mTouchHightlightPaint.setAntiAlias(true); 3284 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3285 TOUCH_HIGHLIGHT_ARC)); 3286 } 3287 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3288 mTouchHightlightPaint); 3289 } 3290 if (DEBUG_TOUCH_HIGHLIGHT) { 3291 if (getSettings().getNavDump()) { 3292 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3293 if (mTouchCrossHairColor == null) { 3294 mTouchCrossHairColor = new Paint(); 3295 mTouchCrossHairColor.setColor(Color.RED); 3296 } 3297 canvas.drawLine(mTouchHighlightX - mNavSlop, 3298 mTouchHighlightY - mNavSlop, mTouchHighlightX 3299 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3300 + 1, mTouchCrossHairColor); 3301 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3302 mTouchHighlightY - mNavSlop, mTouchHighlightX 3303 - mNavSlop, 3304 mTouchHighlightY + mNavSlop + 1, 3305 mTouchCrossHairColor); 3306 } 3307 } 3308 } 3309 } 3310 3311 private void removeTouchHighlight(boolean removePendingMessage) { 3312 if (removePendingMessage) { 3313 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3314 } 3315 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3316 } 3317 3318 @Override 3319 public void setLayoutParams(ViewGroup.LayoutParams params) { 3320 if (params.height == LayoutParams.WRAP_CONTENT) { 3321 mWrapContent = true; 3322 } 3323 super.setLayoutParams(params); 3324 } 3325 3326 @Override 3327 public boolean performLongClick() { 3328 // performLongClick() is the result of a delayed message. If we switch 3329 // to windows overview, the WebView will be temporarily removed from the 3330 // view system. In that case, do nothing. 3331 if (getParent() == null) return false; 3332 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3333 // Send the click so that the textfield is in focus 3334 centerKeyPressOnTextField(); 3335 rebuildWebTextView(); 3336 } else { 3337 clearTextEntry(); 3338 } 3339 if (inEditingMode()) { 3340 return mWebTextView.performLongClick(); 3341 } 3342 /* if long click brings up a context menu, the super function 3343 * returns true and we're done. Otherwise, nothing happened when 3344 * the user clicked. */ 3345 if (super.performLongClick()) { 3346 return true; 3347 } 3348 /* In the case where the application hasn't already handled the long 3349 * click action, look for a word under the click. If one is found, 3350 * animate the text selection into view. 3351 * FIXME: no animation code yet */ 3352 if (mSelectingText) return false; // long click does nothing on selection 3353 int x = viewToContentX((int) mLastTouchX + mScrollX); 3354 int y = viewToContentY((int) mLastTouchY + mScrollY); 3355 setUpSelect(); 3356 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3357 nativeSetExtendSelection(); 3358 getWebChromeClient().onSelectionStart(this); 3359 return true; 3360 } 3361 notifySelectDialogDismissed(); 3362 return false; 3363 } 3364 3365 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3366 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3367 Rect vBox = contentToViewRect(contentBounds); 3368 Rect visibleRect = new Rect(); 3369 calcOurVisibleRect(visibleRect); 3370 // If the textfield is on screen, place the WebTextView in 3371 // its new place, accounting for our new scroll/zoom values, 3372 // and adjust its textsize. 3373 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3374 : visibleRect.contains(vBox)) { 3375 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3376 vBox.height()); 3377 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3378 contentToViewDimension( 3379 nativeFocusCandidateTextSize())); 3380 return true; 3381 } else { 3382 // The textfield is now off screen. The user probably 3383 // was not zooming to see the textfield better. Remove 3384 // the WebTextView. If the user types a key, and the 3385 // textfield is still in focus, we will reconstruct 3386 // the WebTextView and scroll it back on screen. 3387 mWebTextView.remove(); 3388 return false; 3389 } 3390 } 3391 3392 private void onZoomAnimationStart() { 3393 // If it is in password mode, turn it off so it does not draw misplaced. 3394 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3395 mWebTextView.setInPassword(false); 3396 } 3397 } 3398 3399 private void onZoomAnimationEnd() { 3400 // adjust the edit text view if needed 3401 if (inEditingMode() && didUpdateTextViewBounds(false) && nativeFocusCandidateIsPassword()) { 3402 // If it is a password field, start drawing the WebTextView once 3403 // again. 3404 mWebTextView.setInPassword(true); 3405 } 3406 } 3407 3408 void onFixedLengthZoomAnimationStart() { 3409 WebViewCore.pauseUpdatePicture(getWebViewCore()); 3410 onZoomAnimationStart(); 3411 } 3412 3413 void onFixedLengthZoomAnimationEnd() { 3414 WebViewCore.resumeUpdatePicture(mWebViewCore); 3415 onZoomAnimationEnd(); 3416 } 3417 3418 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 3419 Paint.DITHER_FLAG | 3420 Paint.SUBPIXEL_TEXT_FLAG; 3421 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 3422 Paint.DITHER_FLAG; 3423 3424 private final DrawFilter mZoomFilter = 3425 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 3426 // If we need to trade better quality for speed, set mScrollFilter to null 3427 private final DrawFilter mScrollFilter = 3428 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 3429 3430 private void drawCoreAndCursorRing(Canvas canvas, int color, 3431 boolean drawCursorRing) { 3432 if (mDrawHistory) { 3433 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3434 canvas.drawPicture(mHistoryPicture); 3435 return; 3436 } 3437 if (mNativeClass == 0) return; 3438 3439 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 3440 boolean animateScroll = ((!mScroller.isFinished() 3441 || mVelocityTracker != null) 3442 && (mTouchMode != TOUCH_DRAG_MODE || 3443 mHeldMotionless != MOTIONLESS_TRUE)) 3444 || mDeferTouchMode == TOUCH_DRAG_MODE; 3445 if (mTouchMode == TOUCH_DRAG_MODE) { 3446 if (mHeldMotionless == MOTIONLESS_PENDING) { 3447 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3448 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3449 mHeldMotionless = MOTIONLESS_FALSE; 3450 } 3451 if (mHeldMotionless == MOTIONLESS_FALSE) { 3452 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3453 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3454 mHeldMotionless = MOTIONLESS_PENDING; 3455 } 3456 } 3457 if (animateZoom) { 3458 mZoomManager.animateZoom(canvas); 3459 } else { 3460 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3461 } 3462 3463 boolean UIAnimationsRunning = false; 3464 // Currently for each draw we compute the animation values; 3465 // We may in the future decide to do that independently. 3466 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3467 UIAnimationsRunning = true; 3468 // If we have unfinished (or unstarted) animations, 3469 // we ask for a repaint. 3470 invalidate(); 3471 } 3472 3473 // decide which adornments to draw 3474 int extras = DRAW_EXTRAS_NONE; 3475 if (DebugFlags.WEB_VIEW) { 3476 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 3477 + " mSelectingText=" + mSelectingText 3478 + " nativePageShouldHandleShiftAndArrows()=" 3479 + nativePageShouldHandleShiftAndArrows() 3480 + " animateZoom=" + animateZoom); 3481 } 3482 if (mFindIsUp) { 3483 extras = DRAW_EXTRAS_FIND; 3484 } else if (mSelectingText) { 3485 extras = DRAW_EXTRAS_SELECTION; 3486 nativeSetSelectionPointer(mDrawSelectionPointer, 3487 mZoomManager.getInvScale(), 3488 mSelectX, mSelectY - getTitleHeight()); 3489 } else if (drawCursorRing) { 3490 extras = DRAW_EXTRAS_CURSOR_RING; 3491 } 3492 DrawFilter df = null; 3493 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 3494 df = mZoomFilter; 3495 } else if (animateScroll) { 3496 df = mScrollFilter; 3497 } 3498 canvas.setDrawFilter(df); 3499 int content = nativeDraw(canvas, color, extras, true); 3500 canvas.setDrawFilter(null); 3501 if (content != 0) { 3502 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 3503 } 3504 3505 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3506 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3507 mTouchMode = TOUCH_SHORTPRESS_MODE; 3508 } 3509 } 3510 if (mFocusSizeChanged) { 3511 mFocusSizeChanged = false; 3512 // If we are zooming, this will get handled above, when the zoom 3513 // finishes. We also do not need to do this unless the WebTextView 3514 // is showing. 3515 if (!animateZoom && inEditingMode()) { 3516 didUpdateTextViewBounds(true); 3517 } 3518 } 3519 } 3520 3521 // draw history 3522 private boolean mDrawHistory = false; 3523 private Picture mHistoryPicture = null; 3524 private int mHistoryWidth = 0; 3525 private int mHistoryHeight = 0; 3526 3527 // Only check the flag, can be called from WebCore thread 3528 boolean drawHistory() { 3529 return mDrawHistory; 3530 } 3531 3532 int getHistoryPictureWidth() { 3533 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 3534 } 3535 3536 // Should only be called in UI thread 3537 void switchOutDrawHistory() { 3538 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3539 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 3540 mDrawHistory = false; 3541 mHistoryPicture = null; 3542 invalidate(); 3543 int oldScrollX = mScrollX; 3544 int oldScrollY = mScrollY; 3545 mScrollX = pinLocX(mScrollX); 3546 mScrollY = pinLocY(mScrollY); 3547 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3548 mUserScroll = false; 3549 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3550 oldScrollY); 3551 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3552 } else { 3553 sendOurVisibleRect(); 3554 } 3555 } 3556 } 3557 3558 WebViewCore.CursorData cursorData() { 3559 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3560 result.mMoveGeneration = nativeMoveGeneration(); 3561 result.mFrame = nativeCursorFramePointer(); 3562 Point position = nativeCursorPosition(); 3563 result.mX = position.x; 3564 result.mY = position.y; 3565 return result; 3566 } 3567 3568 /** 3569 * Delete text from start to end in the focused textfield. If there is no 3570 * focus, or if start == end, silently fail. If start and end are out of 3571 * order, swap them. 3572 * @param start Beginning of selection to delete. 3573 * @param end End of selection to delete. 3574 */ 3575 /* package */ void deleteSelection(int start, int end) { 3576 mTextGeneration++; 3577 WebViewCore.TextSelectionData data 3578 = new WebViewCore.TextSelectionData(start, end); 3579 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3580 data); 3581 } 3582 3583 /** 3584 * Set the selection to (start, end) in the focused textfield. If start and 3585 * end are out of order, swap them. 3586 * @param start Beginning of selection. 3587 * @param end End of selection. 3588 */ 3589 /* package */ void setSelection(int start, int end) { 3590 if (mWebViewCore != null) { 3591 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3592 } 3593 } 3594 3595 @Override 3596 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3597 InputConnection connection = super.onCreateInputConnection(outAttrs); 3598 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3599 return connection; 3600 } 3601 3602 /** 3603 * Called in response to a message from webkit telling us that the soft 3604 * keyboard should be launched. 3605 */ 3606 private void displaySoftKeyboard(boolean isTextView) { 3607 InputMethodManager imm = (InputMethodManager) 3608 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3609 3610 // bring it back to the reading level scale so that user can enter text 3611 boolean zoom = mZoomManager.getScale() < mZoomManager.getReadingLevelScale(); 3612 if (zoom) { 3613 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 3614 mZoomManager.setZoomScale(mZoomManager.getReadingLevelScale(), false); 3615 } 3616 if (isTextView) { 3617 rebuildWebTextView(); 3618 if (inEditingMode()) { 3619 imm.showSoftInput(mWebTextView, 0); 3620 if (zoom) { 3621 didUpdateTextViewBounds(true); 3622 } 3623 return; 3624 } 3625 } 3626 // Used by plugins. 3627 // Also used if the navigation cache is out of date, and 3628 // does not recognize that a textfield is in focus. In that 3629 // case, use WebView as the targeted view. 3630 // see http://b/issue?id=2457459 3631 imm.showSoftInput(this, 0); 3632 } 3633 3634 // Called by WebKit to instruct the UI to hide the keyboard 3635 private void hideSoftKeyboard() { 3636 InputMethodManager imm = (InputMethodManager) 3637 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3638 3639 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3640 } 3641 3642 /* 3643 * This method checks the current focus and cursor and potentially rebuilds 3644 * mWebTextView to have the appropriate properties, such as password, 3645 * multiline, and what text it contains. It also removes it if necessary. 3646 */ 3647 /* package */ void rebuildWebTextView() { 3648 // If the WebView does not have focus, do nothing until it gains focus. 3649 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3650 return; 3651 } 3652 boolean alreadyThere = inEditingMode(); 3653 // inEditingMode can only return true if mWebTextView is non-null, 3654 // so we can safely call remove() if (alreadyThere) 3655 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3656 if (alreadyThere) { 3657 mWebTextView.remove(); 3658 } 3659 return; 3660 } 3661 // At this point, we know we have found an input field, so go ahead 3662 // and create the WebTextView if necessary. 3663 if (mWebTextView == null) { 3664 mWebTextView = new WebTextView(mContext, WebView.this); 3665 // Initialize our generation number. 3666 mTextGeneration = 0; 3667 } 3668 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3669 contentToViewDimension(nativeFocusCandidateTextSize())); 3670 Rect visibleRect = new Rect(); 3671 calcOurContentVisibleRect(visibleRect); 3672 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3673 // should be in content coordinates. 3674 Rect bounds = nativeFocusCandidateNodeBounds(); 3675 Rect vBox = contentToViewRect(bounds); 3676 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3677 if (!Rect.intersects(bounds, visibleRect)) { 3678 mWebTextView.bringIntoView(); 3679 } 3680 String text = nativeFocusCandidateText(); 3681 int nodePointer = nativeFocusCandidatePointer(); 3682 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3683 // It is possible that we have the same textfield, but it has moved, 3684 // i.e. In the case of opening/closing the screen. 3685 // In that case, we need to set the dimensions, but not the other 3686 // aspects. 3687 // If the text has been changed by webkit, update it. However, if 3688 // there has been more UI text input, ignore it. We will receive 3689 // another update when that text is recognized. 3690 if (text != null && !text.equals(mWebTextView.getText().toString()) 3691 && nativeTextGeneration() == mTextGeneration) { 3692 mWebTextView.setTextAndKeepSelection(text); 3693 } 3694 } else { 3695 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3696 Gravity.RIGHT : Gravity.NO_GRAVITY); 3697 // This needs to be called before setType, which may call 3698 // requestFormData, and it needs to have the correct nodePointer. 3699 mWebTextView.setNodePointer(nodePointer); 3700 mWebTextView.setType(nativeFocusCandidateType()); 3701 if (null == text) { 3702 if (DebugFlags.WEB_VIEW) { 3703 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3704 } 3705 text = ""; 3706 } 3707 mWebTextView.setTextAndKeepSelection(text); 3708 InputMethodManager imm = InputMethodManager.peekInstance(); 3709 if (imm != null && imm.isActive(mWebTextView)) { 3710 imm.restartInput(mWebTextView); 3711 } 3712 } 3713 mWebTextView.requestFocus(); 3714 } 3715 3716 /** 3717 * Called by WebTextView to find saved form data associated with the 3718 * textfield 3719 * @param name Name of the textfield. 3720 * @param nodePointer Pointer to the node of the textfield, so it can be 3721 * compared to the currently focused textfield when the data is 3722 * retrieved. 3723 */ 3724 /* package */ void requestFormData(String name, int nodePointer) { 3725 if (mWebViewCore.getSettings().getSaveFormData()) { 3726 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3727 update.arg1 = nodePointer; 3728 RequestFormData updater = new RequestFormData(name, getUrl(), 3729 update); 3730 Thread t = new Thread(updater); 3731 t.start(); 3732 } 3733 } 3734 3735 /** 3736 * Pass a message to find out the <label> associated with the <input> 3737 * identified by nodePointer 3738 * @param framePointer Pointer to the frame containing the <input> node 3739 * @param nodePointer Pointer to the node for which a <label> is desired. 3740 */ 3741 /* package */ void requestLabel(int framePointer, int nodePointer) { 3742 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3743 nodePointer); 3744 } 3745 3746 /* 3747 * This class requests an Adapter for the WebTextView which shows past 3748 * entries stored in the database. It is a Runnable so that it can be done 3749 * in its own thread, without slowing down the UI. 3750 */ 3751 private class RequestFormData implements Runnable { 3752 private String mName; 3753 private String mUrl; 3754 private Message mUpdateMessage; 3755 3756 public RequestFormData(String name, String url, Message msg) { 3757 mName = name; 3758 mUrl = url; 3759 mUpdateMessage = msg; 3760 } 3761 3762 public void run() { 3763 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3764 if (pastEntries.size() > 0) { 3765 AutoCompleteAdapter adapter = new 3766 AutoCompleteAdapter(mContext, pastEntries); 3767 mUpdateMessage.obj = adapter; 3768 mUpdateMessage.sendToTarget(); 3769 } 3770 } 3771 } 3772 3773 /** 3774 * Dump the display tree to "/sdcard/displayTree.txt" 3775 * 3776 * @hide debug only 3777 */ 3778 public void dumpDisplayTree() { 3779 nativeDumpDisplayTree(getUrl()); 3780 } 3781 3782 /** 3783 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3784 * "/sdcard/domTree.txt" 3785 * 3786 * @hide debug only 3787 */ 3788 public void dumpDomTree(boolean toFile) { 3789 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3790 } 3791 3792 /** 3793 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3794 * to "/sdcard/renderTree.txt" 3795 * 3796 * @hide debug only 3797 */ 3798 public void dumpRenderTree(boolean toFile) { 3799 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3800 } 3801 3802 /** 3803 * Called by DRT on UI thread, need to proxy to WebCore thread. 3804 * 3805 * @hide debug only 3806 */ 3807 public void useMockDeviceOrientation() { 3808 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 3809 } 3810 3811 /** 3812 * Called by DRT on WebCore thread. 3813 * 3814 * @hide debug only 3815 */ 3816 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 3817 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 3818 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 3819 canProvideGamma, gamma); 3820 } 3821 3822 /** 3823 * Dump the V8 counters to standard output. 3824 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3825 * true. Otherwise, this will do nothing. 3826 * 3827 * @hide debug only 3828 */ 3829 public void dumpV8Counters() { 3830 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3831 } 3832 3833 // This is used to determine long press with the center key. Does not 3834 // affect long press with the trackball/touch. 3835 private boolean mGotCenterDown = false; 3836 3837 @Override 3838 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 3839 // send complex characters to webkit for use by JS and plugins 3840 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 3841 // pass the key to DOM 3842 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3843 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3844 // return true as DOM handles the key 3845 return true; 3846 } 3847 return false; 3848 } 3849 3850 @Override 3851 public boolean onKeyDown(int keyCode, KeyEvent event) { 3852 if (DebugFlags.WEB_VIEW) { 3853 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3854 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3855 } 3856 3857 if (mNativeClass == 0) { 3858 return false; 3859 } 3860 3861 // do this hack up front, so it always works, regardless of touch-mode 3862 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3863 mAutoRedraw = !mAutoRedraw; 3864 if (mAutoRedraw) { 3865 invalidate(); 3866 } 3867 return true; 3868 } 3869 3870 // Bubble up the key event if 3871 // 1. it is a system key; or 3872 // 2. the host application wants to handle it; 3873 // 3. the accessibility injector is present and wants to handle it; 3874 if (event.isSystem() 3875 || mCallbackProxy.uiOverrideKeyEvent(event) 3876 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 3877 return false; 3878 } 3879 3880 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3881 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3882 if (nativePageShouldHandleShiftAndArrows()) { 3883 mShiftIsPressed = true; 3884 } else if (!nativeCursorWantsKeyEvents() && !mSelectingText) { 3885 setUpSelect(); 3886 } 3887 } 3888 3889 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 3890 pageUp(false); 3891 return true; 3892 } 3893 3894 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 3895 pageDown(false); 3896 return true; 3897 } 3898 3899 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3900 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3901 switchOutDrawHistory(); 3902 if (nativePageShouldHandleShiftAndArrows()) { 3903 letPageHandleNavKey(keyCode, event.getEventTime(), true); 3904 return true; 3905 } 3906 if (mSelectingText) { 3907 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3908 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3909 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3910 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3911 int multiplier = event.getRepeatCount() + 1; 3912 moveSelection(xRate * multiplier, yRate * multiplier); 3913 return true; 3914 } 3915 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 3916 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3917 return true; 3918 } 3919 // Bubble up the key event as WebView doesn't handle it 3920 return false; 3921 } 3922 3923 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3924 switchOutDrawHistory(); 3925 if (event.getRepeatCount() == 0) { 3926 if (mSelectingText) { 3927 return true; // discard press if copy in progress 3928 } 3929 mGotCenterDown = true; 3930 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3931 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3932 // Already checked mNativeClass, so we do not need to check it 3933 // again. 3934 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3935 return true; 3936 } 3937 // Bubble up the key event as WebView doesn't handle it 3938 return false; 3939 } 3940 3941 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3942 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3943 // turn off copy select if a shift-key combo is pressed 3944 selectionDone(); 3945 mShiftIsPressed = false; 3946 } 3947 3948 if (getSettings().getNavDump()) { 3949 switch (keyCode) { 3950 case KeyEvent.KEYCODE_4: 3951 dumpDisplayTree(); 3952 break; 3953 case KeyEvent.KEYCODE_5: 3954 case KeyEvent.KEYCODE_6: 3955 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3956 break; 3957 case KeyEvent.KEYCODE_7: 3958 case KeyEvent.KEYCODE_8: 3959 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3960 break; 3961 case KeyEvent.KEYCODE_9: 3962 nativeInstrumentReport(); 3963 return true; 3964 } 3965 } 3966 3967 if (nativeCursorIsTextInput()) { 3968 // This message will put the node in focus, for the DOM's notion 3969 // of focus, and make the focuscontroller active 3970 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3971 nativeCursorNodePointer()); 3972 // This will bring up the WebTextView and put it in focus, for 3973 // our view system's notion of focus 3974 rebuildWebTextView(); 3975 // Now we need to pass the event to it 3976 if (inEditingMode()) { 3977 mWebTextView.setDefaultSelection(); 3978 return mWebTextView.dispatchKeyEvent(event); 3979 } 3980 } else if (nativeHasFocusNode()) { 3981 // In this case, the cursor is not on a text input, but the focus 3982 // might be. Check it, and if so, hand over to the WebTextView. 3983 rebuildWebTextView(); 3984 if (inEditingMode()) { 3985 mWebTextView.setDefaultSelection(); 3986 return mWebTextView.dispatchKeyEvent(event); 3987 } 3988 } 3989 3990 // TODO: should we pass all the keys to DOM or check the meta tag 3991 if (nativeCursorWantsKeyEvents() || true) { 3992 // pass the key to DOM 3993 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3994 // return true as DOM handles the key 3995 return true; 3996 } 3997 3998 // Bubble up the key event as WebView doesn't handle it 3999 return false; 4000 } 4001 4002 @Override 4003 public boolean onKeyUp(int keyCode, KeyEvent event) { 4004 if (DebugFlags.WEB_VIEW) { 4005 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4006 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4007 } 4008 4009 if (mNativeClass == 0) { 4010 return false; 4011 } 4012 4013 // special CALL handling when cursor node's href is "tel:XXX" 4014 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4015 String text = nativeCursorText(); 4016 if (!nativeCursorIsTextInput() && text != null 4017 && text.startsWith(SCHEME_TEL)) { 4018 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4019 getContext().startActivity(intent); 4020 return true; 4021 } 4022 } 4023 4024 // Bubble up the key event if 4025 // 1. it is a system key; or 4026 // 2. the host application wants to handle it; 4027 // 3. the accessibility injector is present and wants to handle it; 4028 if (event.isSystem() 4029 || mCallbackProxy.uiOverrideKeyEvent(event) 4030 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4031 return false; 4032 } 4033 4034 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4035 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4036 if (nativePageShouldHandleShiftAndArrows()) { 4037 mShiftIsPressed = false; 4038 } else if (copySelection()) { 4039 selectionDone(); 4040 return true; 4041 } 4042 } 4043 4044 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4045 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4046 if (nativePageShouldHandleShiftAndArrows()) { 4047 letPageHandleNavKey(keyCode, event.getEventTime(), false); 4048 return true; 4049 } 4050 // always handle the navigation keys in the UI thread 4051 // Bubble up the key event as WebView doesn't handle it 4052 return false; 4053 } 4054 4055 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4056 // remove the long press message first 4057 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4058 mGotCenterDown = false; 4059 4060 if (mSelectingText) { 4061 if (mExtendSelection) { 4062 copySelection(); 4063 selectionDone(); 4064 } else { 4065 mExtendSelection = true; 4066 nativeSetExtendSelection(); 4067 invalidate(); // draw the i-beam instead of the arrow 4068 } 4069 return true; // discard press if copy in progress 4070 } 4071 4072 // perform the single click 4073 Rect visibleRect = sendOurVisibleRect(); 4074 // Note that sendOurVisibleRect calls viewToContent, so the 4075 // coordinates should be in content coordinates. 4076 if (!nativeCursorIntersects(visibleRect)) { 4077 return false; 4078 } 4079 WebViewCore.CursorData data = cursorData(); 4080 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4081 playSoundEffect(SoundEffectConstants.CLICK); 4082 if (nativeCursorIsTextInput()) { 4083 rebuildWebTextView(); 4084 centerKeyPressOnTextField(); 4085 if (inEditingMode()) { 4086 mWebTextView.setDefaultSelection(); 4087 } 4088 return true; 4089 } 4090 clearTextEntry(); 4091 nativeSetFollowedLink(true); 4092 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4093 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4094 nativeCursorNodePointer()); 4095 } 4096 return true; 4097 } 4098 4099 // TODO: should we pass all the keys to DOM or check the meta tag 4100 if (nativeCursorWantsKeyEvents() || true) { 4101 // pass the key to DOM 4102 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4103 // return true as DOM handles the key 4104 return true; 4105 } 4106 4107 // Bubble up the key event as WebView doesn't handle it 4108 return false; 4109 } 4110 4111 /** 4112 * @hide pending API council approval. 4113 */ 4114 public void setUpSelect() { 4115 if (0 == mNativeClass) return; // client isn't initialized 4116 if (inFullScreenMode()) return; 4117 if (mSelectingText) return; 4118 mExtendSelection = false; 4119 mSelectingText = mDrawSelectionPointer = true; 4120 // don't let the picture change during text selection 4121 WebViewCore.pauseUpdatePicture(mWebViewCore); 4122 nativeResetSelection(); 4123 if (nativeHasCursorNode()) { 4124 Rect rect = nativeCursorNodeBounds(); 4125 mSelectX = contentToViewX(rect.left); 4126 mSelectY = contentToViewY(rect.top); 4127 } else if (mLastTouchY > getVisibleTitleHeight()) { 4128 mSelectX = mScrollX + (int) mLastTouchX; 4129 mSelectY = mScrollY + (int) mLastTouchY; 4130 } else { 4131 mSelectX = mScrollX + getViewWidth() / 2; 4132 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4133 } 4134 nativeHideCursor(); 4135 } 4136 4137 /** 4138 * Use this method to put the WebView into text selection mode. 4139 * Do not rely on this functionality; it will be deprecated in the future. 4140 */ 4141 public void emulateShiftHeld() { 4142 setUpSelect(); 4143 } 4144 4145 /** 4146 * @hide pending API council approval. 4147 */ 4148 public void selectAll() { 4149 if (0 == mNativeClass) return; // client isn't initialized 4150 if (inFullScreenMode()) return; 4151 if (!mSelectingText) setUpSelect(); 4152 nativeSelectAll(); 4153 mDrawSelectionPointer = false; 4154 mExtendSelection = true; 4155 invalidate(); 4156 } 4157 4158 /** 4159 * @hide pending API council approval. 4160 */ 4161 public boolean selectDialogIsUp() { 4162 return mSelectingText; 4163 } 4164 4165 /** 4166 * @hide pending API council approval. 4167 */ 4168 public void notifySelectDialogDismissed() { 4169 mSelectingText = false; 4170 WebViewCore.resumeUpdatePicture(mWebViewCore); 4171 } 4172 4173 /** 4174 * @hide pending API council approval. 4175 */ 4176 public void selectionDone() { 4177 if (mSelectingText) { 4178 getWebChromeClient().onSelectionDone(this); 4179 invalidate(); // redraw without selection 4180 notifySelectDialogDismissed(); 4181 } 4182 } 4183 4184 /** 4185 * @hide pending API council approval. 4186 */ 4187 public boolean copySelection() { 4188 boolean copiedSomething = false; 4189 String selection = getSelection(); 4190 if (selection != "") { 4191 if (DebugFlags.WEB_VIEW) { 4192 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4193 } 4194 Toast.makeText(mContext 4195 , com.android.internal.R.string.text_copied 4196 , Toast.LENGTH_SHORT).show(); 4197 copiedSomething = true; 4198 ClipboardManager cm = (ClipboardManager)getContext() 4199 .getSystemService(Context.CLIPBOARD_SERVICE); 4200 cm.setText(selection); 4201 } 4202 invalidate(); // remove selection region and pointer 4203 return copiedSomething; 4204 } 4205 4206 /** 4207 * @hide pending API council approval. 4208 */ 4209 public String getSelection() { 4210 if (mNativeClass == 0) return ""; 4211 return nativeGetSelection(); 4212 } 4213 4214 @Override 4215 protected void onAttachedToWindow() { 4216 super.onAttachedToWindow(); 4217 if (hasWindowFocus()) setActive(true); 4218 } 4219 4220 @Override 4221 protected void onDetachedFromWindow() { 4222 clearTextEntry(); 4223 mZoomManager.dismissZoomPicker(); 4224 if (hasWindowFocus()) setActive(false); 4225 super.onDetachedFromWindow(); 4226 } 4227 4228 @Override 4229 protected void onVisibilityChanged(View changedView, int visibility) { 4230 super.onVisibilityChanged(changedView, visibility); 4231 // The zoomManager may be null if the webview is created from XML that 4232 // specifies the view's visibility param as not visible (see http://b/2794841) 4233 if (visibility != View.VISIBLE && mZoomManager != null) { 4234 mZoomManager.dismissZoomPicker(); 4235 } 4236 } 4237 4238 /** 4239 * @deprecated WebView no longer needs to implement 4240 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4241 */ 4242 @Deprecated 4243 public void onChildViewAdded(View parent, View child) {} 4244 4245 /** 4246 * @deprecated WebView no longer needs to implement 4247 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4248 */ 4249 @Deprecated 4250 public void onChildViewRemoved(View p, View child) {} 4251 4252 /** 4253 * @deprecated WebView should not have implemented 4254 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4255 * does nothing now. 4256 */ 4257 @Deprecated 4258 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4259 } 4260 4261 private void setActive(boolean active) { 4262 if (active) { 4263 if (hasFocus()) { 4264 // If our window regained focus, and we have focus, then begin 4265 // drawing the cursor ring 4266 mDrawCursorRing = true; 4267 setFocusControllerActive(true); 4268 if (mNativeClass != 0) { 4269 nativeRecordButtons(true, false, true); 4270 } 4271 } else { 4272 if (!inEditingMode()) { 4273 // If our window gained focus, but we do not have it, do not 4274 // draw the cursor ring. 4275 mDrawCursorRing = false; 4276 setFocusControllerActive(false); 4277 } 4278 // We do not call nativeRecordButtons here because we assume 4279 // that when we lost focus, or window focus, it got called with 4280 // false for the first parameter 4281 } 4282 } else { 4283 if (!mZoomManager.isZoomPickerVisible()) { 4284 /* 4285 * The external zoom controls come in their own window, so our 4286 * window loses focus. Our policy is to not draw the cursor ring 4287 * if our window is not focused, but this is an exception since 4288 * the user can still navigate the web page with the zoom 4289 * controls showing. 4290 */ 4291 mDrawCursorRing = false; 4292 } 4293 mGotKeyDown = false; 4294 mShiftIsPressed = false; 4295 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4296 mTouchMode = TOUCH_DONE_MODE; 4297 if (mNativeClass != 0) { 4298 nativeRecordButtons(false, false, true); 4299 } 4300 setFocusControllerActive(false); 4301 } 4302 invalidate(); 4303 } 4304 4305 // To avoid drawing the cursor ring, and remove the TextView when our window 4306 // loses focus. 4307 @Override 4308 public void onWindowFocusChanged(boolean hasWindowFocus) { 4309 setActive(hasWindowFocus); 4310 if (hasWindowFocus) { 4311 JWebCoreJavaBridge.setActiveWebView(this); 4312 } else { 4313 JWebCoreJavaBridge.removeActiveWebView(this); 4314 } 4315 super.onWindowFocusChanged(hasWindowFocus); 4316 } 4317 4318 /* 4319 * Pass a message to WebCore Thread, telling the WebCore::Page's 4320 * FocusController to be "inactive" so that it will 4321 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4322 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4323 */ 4324 /* package */ void setFocusControllerActive(boolean active) { 4325 if (mWebViewCore == null) return; 4326 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 4327 } 4328 4329 @Override 4330 protected void onFocusChanged(boolean focused, int direction, 4331 Rect previouslyFocusedRect) { 4332 if (DebugFlags.WEB_VIEW) { 4333 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4334 } 4335 if (focused) { 4336 // When we regain focus, if we have window focus, resume drawing 4337 // the cursor ring 4338 if (hasWindowFocus()) { 4339 mDrawCursorRing = true; 4340 if (mNativeClass != 0) { 4341 nativeRecordButtons(true, false, true); 4342 } 4343 setFocusControllerActive(true); 4344 //} else { 4345 // The WebView has gained focus while we do not have 4346 // windowfocus. When our window lost focus, we should have 4347 // called nativeRecordButtons(false...) 4348 } 4349 } else { 4350 // When we lost focus, unless focus went to the TextView (which is 4351 // true if we are in editing mode), stop drawing the cursor ring. 4352 if (!inEditingMode()) { 4353 mDrawCursorRing = false; 4354 if (mNativeClass != 0) { 4355 nativeRecordButtons(false, false, true); 4356 } 4357 setFocusControllerActive(false); 4358 } 4359 mGotKeyDown = false; 4360 } 4361 4362 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4363 } 4364 4365 /** 4366 * @hide 4367 */ 4368 @Override 4369 protected boolean setFrame(int left, int top, int right, int bottom) { 4370 boolean changed = super.setFrame(left, top, right, bottom); 4371 if (!changed && mHeightCanMeasure) { 4372 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4373 // in WebViewCore after we get the first layout. We do call 4374 // requestLayout() when we get contentSizeChanged(). But the View 4375 // system won't call onSizeChanged if the dimension is not changed. 4376 // In this case, we need to call sendViewSizeZoom() explicitly to 4377 // notify the WebKit about the new dimensions. 4378 sendViewSizeZoom(false); 4379 } 4380 return changed; 4381 } 4382 4383 @Override 4384 protected void onSizeChanged(int w, int h, int ow, int oh) { 4385 super.onSizeChanged(w, h, ow, oh); 4386 4387 // adjust the max viewport width depending on the view dimensions. This 4388 // is to ensure the scaling is not going insane. So do not shrink it if 4389 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4390 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 4391 if (newMaxViewportWidth > sMaxViewportWidth) { 4392 sMaxViewportWidth = newMaxViewportWidth; 4393 } 4394 4395 mZoomManager.onSizeChanged(w, h, ow, oh); 4396 } 4397 4398 @Override 4399 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4400 super.onScrollChanged(l, t, oldl, oldt); 4401 sendOurVisibleRect(); 4402 // update WebKit if visible title bar height changed. The logic is same 4403 // as getVisibleTitleHeight. 4404 int titleHeight = getTitleHeight(); 4405 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4406 sendViewSizeZoom(false); 4407 } 4408 } 4409 4410 @Override 4411 public boolean dispatchKeyEvent(KeyEvent event) { 4412 boolean dispatch = true; 4413 4414 // Textfields, plugins, and contentEditable nodes need to receive the 4415 // shift up key even if another key was released while the shift key 4416 // was held down. 4417 if (!inEditingMode() && (mNativeClass == 0 4418 || !nativePageShouldHandleShiftAndArrows())) { 4419 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4420 mGotKeyDown = true; 4421 } else { 4422 if (!mGotKeyDown) { 4423 /* 4424 * We got a key up for which we were not the recipient of 4425 * the original key down. Don't give it to the view. 4426 */ 4427 dispatch = false; 4428 } 4429 mGotKeyDown = false; 4430 } 4431 } 4432 4433 if (dispatch) { 4434 return super.dispatchKeyEvent(event); 4435 } else { 4436 // We didn't dispatch, so let something else handle the key 4437 return false; 4438 } 4439 } 4440 4441 // Here are the snap align logic: 4442 // 1. If it starts nearly horizontally or vertically, snap align; 4443 // 2. If there is a dramitic direction change, let it go; 4444 // 3. If there is a same direction back and forth, lock it. 4445 4446 // adjustable parameters 4447 private int mMinLockSnapReverseDistance; 4448 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4449 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4450 4451 private static int sign(float x) { 4452 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4453 } 4454 4455 // if the page can scroll <= this value, we won't allow the drag tracker 4456 // to have any effect. 4457 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4458 4459 private class DragTrackerHandler { 4460 private final DragTracker mProxy; 4461 private final float mStartY, mStartX; 4462 private final float mMinDY, mMinDX; 4463 private final float mMaxDY, mMaxDX; 4464 private float mCurrStretchY, mCurrStretchX; 4465 private int mSX, mSY; 4466 private Interpolator mInterp; 4467 private float[] mXY = new float[2]; 4468 4469 // inner (non-state) classes can't have enums :( 4470 private static final int DRAGGING_STATE = 0; 4471 private static final int ANIMATING_STATE = 1; 4472 private static final int FINISHED_STATE = 2; 4473 private int mState; 4474 4475 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4476 mProxy = proxy; 4477 4478 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4479 int viewTop = getScrollY(); 4480 int viewBottom = viewTop + getHeight(); 4481 4482 mStartY = y; 4483 mMinDY = -viewTop; 4484 mMaxDY = docBottom - viewBottom; 4485 4486 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4487 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4488 " up/down= " + mMinDY + " " + mMaxDY); 4489 } 4490 4491 int docRight = computeHorizontalScrollRange(); 4492 int viewLeft = getScrollX(); 4493 int viewRight = viewLeft + getWidth(); 4494 mStartX = x; 4495 mMinDX = -viewLeft; 4496 mMaxDX = docRight - viewRight; 4497 4498 mState = DRAGGING_STATE; 4499 mProxy.onStartDrag(x, y); 4500 4501 // ensure we buildBitmap at least once 4502 mSX = -99999; 4503 } 4504 4505 private float computeStretch(float delta, float min, float max) { 4506 float stretch = 0; 4507 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4508 if (delta < min) { 4509 stretch = delta - min; 4510 } else if (delta > max) { 4511 stretch = delta - max; 4512 } 4513 } 4514 return stretch; 4515 } 4516 4517 public void dragTo(float x, float y) { 4518 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4519 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4520 4521 if ((mSnapScrollMode & SNAP_X) != 0) { 4522 sy = 0; 4523 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4524 sx = 0; 4525 } 4526 4527 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4528 mCurrStretchX = sx; 4529 mCurrStretchY = sy; 4530 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4531 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4532 " " + sy); 4533 } 4534 if (mProxy.onStretchChange(sx, sy)) { 4535 invalidate(); 4536 } 4537 } 4538 } 4539 4540 public void stopDrag() { 4541 final int DURATION = 200; 4542 int now = (int)SystemClock.uptimeMillis(); 4543 mInterp = new Interpolator(2); 4544 mXY[0] = mCurrStretchX; 4545 mXY[1] = mCurrStretchY; 4546 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4547 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4548 mInterp.setKeyFrame(0, now, mXY, blend); 4549 float[] zerozero = new float[] { 0, 0 }; 4550 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4551 mState = ANIMATING_STATE; 4552 4553 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4554 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4555 } 4556 } 4557 4558 // Call this after each draw. If it ruturns null, the tracker is done 4559 public boolean isFinished() { 4560 return mState == FINISHED_STATE; 4561 } 4562 4563 private int hiddenHeightOfTitleBar() { 4564 return getTitleHeight() - getVisibleTitleHeight(); 4565 } 4566 4567 // need a way to know if 565 or 8888 is the right config for 4568 // capturing the display and giving it to the drag proxy 4569 private Bitmap.Config offscreenBitmapConfig() { 4570 // hard code 565 for now 4571 return Bitmap.Config.RGB_565; 4572 } 4573 4574 /* If the tracker draws, then this returns true, otherwise it will 4575 return false, and draw nothing. 4576 */ 4577 public boolean draw(Canvas canvas) { 4578 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4579 int sx = getScrollX(); 4580 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4581 if (mSX != sx || mSY != sy) { 4582 buildBitmap(sx, sy); 4583 mSX = sx; 4584 mSY = sy; 4585 } 4586 4587 if (mState == ANIMATING_STATE) { 4588 Interpolator.Result result = mInterp.timeToValues(mXY); 4589 if (result == Interpolator.Result.FREEZE_END) { 4590 mState = FINISHED_STATE; 4591 return false; 4592 } else { 4593 mProxy.onStretchChange(mXY[0], mXY[1]); 4594 invalidate(); 4595 // fall through to the draw 4596 } 4597 } 4598 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4599 canvas.translate(sx, sy); 4600 mProxy.onDraw(canvas); 4601 canvas.restoreToCount(count); 4602 return true; 4603 } 4604 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4605 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4606 mCurrStretchX + " " + mCurrStretchY); 4607 } 4608 return false; 4609 } 4610 4611 private void buildBitmap(int sx, int sy) { 4612 int w = getWidth(); 4613 int h = getViewHeight(); 4614 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4615 Canvas canvas = new Canvas(bm); 4616 canvas.translate(-sx, -sy); 4617 drawContent(canvas); 4618 4619 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4620 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4621 " " + sy + " " + w + " " + h); 4622 } 4623 mProxy.onBitmapChange(bm); 4624 } 4625 } 4626 4627 /** @hide */ 4628 public static class DragTracker { 4629 public void onStartDrag(float x, float y) {} 4630 public boolean onStretchChange(float sx, float sy) { 4631 // return true to have us inval the view 4632 return false; 4633 } 4634 public void onStopDrag() {} 4635 public void onBitmapChange(Bitmap bm) {} 4636 public void onDraw(Canvas canvas) {} 4637 } 4638 4639 /** @hide */ 4640 public DragTracker getDragTracker() { 4641 return mDragTracker; 4642 } 4643 4644 /** @hide */ 4645 public void setDragTracker(DragTracker tracker) { 4646 mDragTracker = tracker; 4647 } 4648 4649 private DragTracker mDragTracker; 4650 private DragTrackerHandler mDragTrackerHandler; 4651 4652 private boolean hitFocusedPlugin(int contentX, int contentY) { 4653 if (DebugFlags.WEB_VIEW) { 4654 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4655 Rect r = nativeFocusNodeBounds(); 4656 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4657 + ", " + r.right + ", " + r.bottom + ")"); 4658 } 4659 return nativeFocusIsPlugin() 4660 && nativeFocusNodeBounds().contains(contentX, contentY); 4661 } 4662 4663 private boolean shouldForwardTouchEvent() { 4664 return mFullScreenHolder != null || (mForwardTouchEvents 4665 && !mSelectingText 4666 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4667 } 4668 4669 private boolean inFullScreenMode() { 4670 return mFullScreenHolder != null; 4671 } 4672 4673 void onPinchToZoomAnimationStart() { 4674 // cancel the single touch handling 4675 cancelTouch(); 4676 onZoomAnimationStart(); 4677 } 4678 4679 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 4680 onZoomAnimationEnd(); 4681 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 4682 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 4683 // as it may trigger the unwanted fling. 4684 mTouchMode = TOUCH_PINCH_DRAG; 4685 mConfirmMove = true; 4686 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 4687 } 4688 4689 private void startScrollingLayer(float gestureX, float gestureY) { 4690 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4691 int contentX = viewToContentX((int) gestureX + mScrollX); 4692 int contentY = viewToContentY((int) gestureY + mScrollY); 4693 mScrollingLayer = nativeScrollableLayer(contentX, contentY); 4694 if (mScrollingLayer != 0) { 4695 mTouchMode = TOUCH_DRAG_LAYER_MODE; 4696 } 4697 } 4698 } 4699 4700 // 1/(density * density) used to compute the distance between points. 4701 // Computed in init(). 4702 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 4703 4704 // The distance between two points reported in onTouchEvent scaled by the 4705 // density of the screen. 4706 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 4707 4708 @Override 4709 public boolean onTouchEvent(MotionEvent ev) { 4710 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4711 return false; 4712 } 4713 4714 if (DebugFlags.WEB_VIEW) { 4715 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4716 + mTouchMode); 4717 } 4718 4719 int action = ev.getAction(); 4720 float x = ev.getX(); 4721 float y = ev.getY(); 4722 long eventTime = ev.getEventTime(); 4723 4724 final ScaleGestureDetector detector = 4725 mZoomManager.getMultiTouchGestureDetector(); 4726 boolean skipScaleGesture = false; 4727 // Set to the mid-point of a two-finger gesture used to detect if the 4728 // user has touched a layer. 4729 float gestureX = x; 4730 float gestureY = y; 4731 if (detector == null || !detector.isInProgress()) { 4732 // The gesture for scrolling a layer is two fingers close together. 4733 // FIXME: we may consider giving WebKit an option to handle 4734 // multi-touch events later. 4735 if (ev.getPointerCount() > 1) { 4736 float dx = ev.getX(1) - ev.getX(0); 4737 float dy = ev.getY(1) - ev.getY(0); 4738 float dist = (dx * dx + dy * dy) * 4739 DRAG_LAYER_INVERSE_DENSITY_SQUARED; 4740 // Use the approximate center to determine if the gesture is in 4741 // a layer. 4742 gestureX = ev.getX(0) + (dx * .5f); 4743 gestureY = ev.getY(0) + (dy * .5f); 4744 // Now use a consistent point for tracking movement. 4745 if (ev.getX(0) < ev.getX(1)) { 4746 x = ev.getX(0); 4747 y = ev.getY(0); 4748 } else { 4749 x = ev.getX(1); 4750 y = ev.getY(1); 4751 } 4752 action = ev.getActionMasked(); 4753 if (dist < DRAG_LAYER_FINGER_DISTANCE) { 4754 skipScaleGesture = true; 4755 } else if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 4756 // Fingers moved too far apart while dragging, the user 4757 // might be trying to zoom. 4758 mTouchMode = TOUCH_INIT_MODE; 4759 } 4760 } 4761 } 4762 4763 // FIXME: we may consider to give WebKit an option to handle multi-touch 4764 // events later. 4765 if (mZoomManager.supportsMultiTouchZoom() && ev.getPointerCount() > 1 && 4766 mTouchMode != TOUCH_DRAG_LAYER_MODE && !skipScaleGesture) { 4767 4768 // if the page disallows zoom, skip multi-pointer action 4769 if (mZoomManager.isZoomScaleFixed()) { 4770 return true; 4771 } 4772 4773 if (!detector.isInProgress() && 4774 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 4775 // Insert a fake pointer down event in order to start 4776 // the zoom scale detector. 4777 MotionEvent temp = MotionEvent.obtain(ev); 4778 // Clear the original event and set it to 4779 // ACTION_POINTER_DOWN. 4780 temp.setAction(temp.getAction() & 4781 ~MotionEvent.ACTION_MASK | 4782 MotionEvent.ACTION_POINTER_DOWN); 4783 detector.onTouchEvent(temp); 4784 } 4785 4786 detector.onTouchEvent(ev); 4787 4788 if (detector.isInProgress()) { 4789 mLastTouchTime = eventTime; 4790 return true; 4791 } 4792 4793 x = detector.getFocusX(); 4794 y = detector.getFocusY(); 4795 action = ev.getAction() & MotionEvent.ACTION_MASK; 4796 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4797 cancelTouch(); 4798 action = MotionEvent.ACTION_DOWN; 4799 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4800 // set mLastTouchX/Y to the remaining point 4801 mLastTouchX = x; 4802 mLastTouchY = y; 4803 } else if (action == MotionEvent.ACTION_MOVE) { 4804 // negative x or y indicate it is on the edge, skip it. 4805 if (x < 0 || y < 0) { 4806 return true; 4807 } 4808 } 4809 } 4810 4811 // Due to the touch screen edge effect, a touch closer to the edge 4812 // always snapped to the edge. As getViewWidth() can be different from 4813 // getWidth() due to the scrollbar, adjusting the point to match 4814 // getViewWidth(). Same applied to the height. 4815 x = Math.min(x, getViewWidth() - 1); 4816 y = Math.min(y, getViewHeightWithTitle() - 1); 4817 4818 float fDeltaX = mLastTouchX - x; 4819 float fDeltaY = mLastTouchY - y; 4820 int deltaX = (int) fDeltaX; 4821 int deltaY = (int) fDeltaY; 4822 int contentX = viewToContentX((int) x + mScrollX); 4823 int contentY = viewToContentY((int) y + mScrollY); 4824 4825 switch (action) { 4826 case MotionEvent.ACTION_DOWN: { 4827 mPreventDefault = PREVENT_DEFAULT_NO; 4828 mConfirmMove = false; 4829 if (!mScroller.isFinished()) { 4830 // stop the current scroll animation, but if this is 4831 // the start of a fling, allow it to add to the current 4832 // fling's velocity 4833 mScroller.abortAnimation(); 4834 mTouchMode = TOUCH_DRAG_START_MODE; 4835 mConfirmMove = true; 4836 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4837 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4838 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4839 if (getSettings().supportTouchOnly()) { 4840 removeTouchHighlight(true); 4841 } 4842 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4843 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4844 } else { 4845 // commit the short press action for the previous tap 4846 doShortPress(); 4847 mTouchMode = TOUCH_INIT_MODE; 4848 mDeferTouchProcess = (!inFullScreenMode() 4849 && mForwardTouchEvents) ? hitFocusedPlugin( 4850 contentX, contentY) : false; 4851 } 4852 } else { // the normal case 4853 mTouchMode = TOUCH_INIT_MODE; 4854 mDeferTouchProcess = (!inFullScreenMode() 4855 && mForwardTouchEvents) ? hitFocusedPlugin( 4856 contentX, contentY) : false; 4857 mWebViewCore.sendMessage( 4858 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4859 if (getSettings().supportTouchOnly()) { 4860 TouchHighlightData data = new TouchHighlightData(); 4861 data.mX = contentX; 4862 data.mY = contentY; 4863 data.mSlop = viewToContentDimension(mNavSlop); 4864 mWebViewCore.sendMessageDelayed( 4865 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 4866 ViewConfiguration.getTapTimeout()); 4867 if (DEBUG_TOUCH_HIGHLIGHT) { 4868 if (getSettings().getNavDump()) { 4869 mTouchHighlightX = (int) x + mScrollX; 4870 mTouchHighlightY = (int) y + mScrollY; 4871 mPrivateHandler.postDelayed(new Runnable() { 4872 public void run() { 4873 mTouchHighlightX = mTouchHighlightY = 0; 4874 invalidate(); 4875 } 4876 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 4877 } 4878 } 4879 } 4880 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4881 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4882 (eventTime - mLastTouchUpTime), eventTime); 4883 } 4884 if (mSelectingText) { 4885 mDrawSelectionPointer = false; 4886 mSelectionStarted = nativeStartSelection(contentX, contentY); 4887 if (DebugFlags.WEB_VIEW) { 4888 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 4889 } 4890 invalidate(); 4891 } 4892 } 4893 // Trigger the link 4894 if (mTouchMode == TOUCH_INIT_MODE 4895 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4896 mPrivateHandler.sendEmptyMessageDelayed( 4897 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 4898 mPrivateHandler.sendEmptyMessageDelayed( 4899 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 4900 if (inFullScreenMode() || mDeferTouchProcess) { 4901 mPreventDefault = PREVENT_DEFAULT_YES; 4902 } else if (mForwardTouchEvents) { 4903 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 4904 } else { 4905 mPreventDefault = PREVENT_DEFAULT_NO; 4906 } 4907 // pass the touch events from UI thread to WebCore thread 4908 if (shouldForwardTouchEvent()) { 4909 TouchEventData ted = new TouchEventData(); 4910 ted.mAction = action; 4911 ted.mX = contentX; 4912 ted.mY = contentY; 4913 ted.mMetaState = ev.getMetaState(); 4914 ted.mReprocess = mDeferTouchProcess; 4915 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4916 if (mDeferTouchProcess) { 4917 // still needs to set them for compute deltaX/Y 4918 mLastTouchX = x; 4919 mLastTouchY = y; 4920 break; 4921 } 4922 if (!inFullScreenMode()) { 4923 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 4924 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4925 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4926 action, 0), TAP_TIMEOUT); 4927 } 4928 } 4929 } 4930 startTouch(x, y, eventTime); 4931 break; 4932 } 4933 case MotionEvent.ACTION_MOVE: { 4934 boolean firstMove = false; 4935 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 4936 >= mTouchSlopSquare) { 4937 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4938 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4939 mConfirmMove = true; 4940 firstMove = true; 4941 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4942 mTouchMode = TOUCH_INIT_MODE; 4943 } 4944 if (getSettings().supportTouchOnly()) { 4945 removeTouchHighlight(true); 4946 } 4947 } 4948 // pass the touch events from UI thread to WebCore thread 4949 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 4950 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4951 TouchEventData ted = new TouchEventData(); 4952 ted.mAction = action; 4953 ted.mX = contentX; 4954 ted.mY = contentY; 4955 ted.mMetaState = ev.getMetaState(); 4956 ted.mReprocess = mDeferTouchProcess; 4957 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4958 mLastSentTouchTime = eventTime; 4959 if (mDeferTouchProcess) { 4960 break; 4961 } 4962 if (firstMove && !inFullScreenMode()) { 4963 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4964 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4965 action, 0), TAP_TIMEOUT); 4966 } 4967 } 4968 if (mTouchMode == TOUCH_DONE_MODE 4969 || mPreventDefault == PREVENT_DEFAULT_YES) { 4970 // no dragging during scroll zoom animation, or when prevent 4971 // default is yes 4972 break; 4973 } 4974 if (mVelocityTracker == null) { 4975 Log.e(LOGTAG, "Got null mVelocityTracker when " 4976 + "mPreventDefault = " + mPreventDefault 4977 + " mDeferTouchProcess = " + mDeferTouchProcess 4978 + " mTouchMode = " + mTouchMode); 4979 } 4980 mVelocityTracker.addMovement(ev); 4981 if (mSelectingText && mSelectionStarted) { 4982 if (DebugFlags.WEB_VIEW) { 4983 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 4984 } 4985 nativeExtendSelection(contentX, contentY); 4986 invalidate(); 4987 break; 4988 } 4989 4990 if (mTouchMode != TOUCH_DRAG_MODE && 4991 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4992 4993 if (!mConfirmMove) { 4994 break; 4995 } 4996 4997 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 4998 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 4999 // track mLastTouchTime as we may need to do fling at 5000 // ACTION_UP 5001 mLastTouchTime = eventTime; 5002 break; 5003 } 5004 // if it starts nearly horizontal or vertical, enforce it 5005 int ax = Math.abs(deltaX); 5006 int ay = Math.abs(deltaY); 5007 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5008 mSnapScrollMode = SNAP_X; 5009 mSnapPositive = deltaX > 0; 5010 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5011 mSnapScrollMode = SNAP_Y; 5012 mSnapPositive = deltaY > 0; 5013 } 5014 5015 mTouchMode = TOUCH_DRAG_MODE; 5016 mLastTouchX = x; 5017 mLastTouchY = y; 5018 fDeltaX = 0.0f; 5019 fDeltaY = 0.0f; 5020 deltaX = 0; 5021 deltaY = 0; 5022 5023 if (skipScaleGesture) { 5024 startScrollingLayer(gestureX, gestureY); 5025 } 5026 startDrag(); 5027 } 5028 5029 if (mDragTrackerHandler != null) { 5030 mDragTrackerHandler.dragTo(x, y); 5031 } 5032 5033 // do pan 5034 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5035 int newScrollX = pinLocX(mScrollX + deltaX); 5036 int newDeltaX = newScrollX - mScrollX; 5037 if (deltaX != newDeltaX) { 5038 deltaX = newDeltaX; 5039 fDeltaX = (float) newDeltaX; 5040 } 5041 int newScrollY = pinLocY(mScrollY + deltaY); 5042 int newDeltaY = newScrollY - mScrollY; 5043 if (deltaY != newDeltaY) { 5044 deltaY = newDeltaY; 5045 fDeltaY = (float) newDeltaY; 5046 } 5047 } 5048 boolean done = false; 5049 boolean keepScrollBarsVisible = false; 5050 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5051 mLastTouchX = x; 5052 mLastTouchY = y; 5053 keepScrollBarsVisible = done = true; 5054 } else { 5055 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5056 int ax = Math.abs(deltaX); 5057 int ay = Math.abs(deltaY); 5058 if (mSnapScrollMode == SNAP_X) { 5059 // radical change means getting out of snap mode 5060 if (ay > MAX_SLOPE_FOR_DIAG * ax 5061 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5062 mSnapScrollMode = SNAP_NONE; 5063 } 5064 // reverse direction means lock in the snap mode 5065 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5066 (mSnapPositive 5067 ? deltaX < -mMinLockSnapReverseDistance 5068 : deltaX > mMinLockSnapReverseDistance)) { 5069 mSnapScrollMode |= SNAP_LOCK; 5070 } 5071 } else { 5072 // radical change means getting out of snap mode 5073 if (ax > MAX_SLOPE_FOR_DIAG * ay 5074 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5075 mSnapScrollMode = SNAP_NONE; 5076 } 5077 // reverse direction means lock in the snap mode 5078 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5079 (mSnapPositive 5080 ? deltaY < -mMinLockSnapReverseDistance 5081 : deltaY > mMinLockSnapReverseDistance)) { 5082 mSnapScrollMode |= SNAP_LOCK; 5083 } 5084 } 5085 } 5086 if (mSnapScrollMode != SNAP_NONE) { 5087 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5088 deltaY = 0; 5089 } else { 5090 deltaX = 0; 5091 } 5092 } 5093 if ((deltaX | deltaY) != 0) { 5094 if (deltaX != 0) { 5095 mLastTouchX = x; 5096 } 5097 if (deltaY != 0) { 5098 mLastTouchY = y; 5099 } 5100 mHeldMotionless = MOTIONLESS_FALSE; 5101 } else { 5102 // keep the scrollbar on the screen even there is no 5103 // scroll 5104 mLastTouchX = x; 5105 mLastTouchY = y; 5106 keepScrollBarsVisible = true; 5107 } 5108 mLastTouchTime = eventTime; 5109 mUserScroll = true; 5110 } 5111 5112 doDrag(deltaX, deltaY); 5113 5114 // Turn off scrollbars when dragging a layer. 5115 if (keepScrollBarsVisible && 5116 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5117 if (mHeldMotionless != MOTIONLESS_TRUE) { 5118 mHeldMotionless = MOTIONLESS_TRUE; 5119 invalidate(); 5120 } 5121 // keep the scrollbar on the screen even there is no scroll 5122 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5123 false); 5124 // return false to indicate that we can't pan out of the 5125 // view space 5126 return !done; 5127 } 5128 break; 5129 } 5130 case MotionEvent.ACTION_UP: { 5131 if (!isFocused()) requestFocus(); 5132 // pass the touch events from UI thread to WebCore thread 5133 if (shouldForwardTouchEvent()) { 5134 TouchEventData ted = new TouchEventData(); 5135 ted.mAction = action; 5136 ted.mX = contentX; 5137 ted.mY = contentY; 5138 ted.mMetaState = ev.getMetaState(); 5139 ted.mReprocess = mDeferTouchProcess; 5140 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5141 } 5142 mLastTouchUpTime = eventTime; 5143 switch (mTouchMode) { 5144 case TOUCH_DOUBLE_TAP_MODE: // double tap 5145 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5146 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5147 if (inFullScreenMode() || mDeferTouchProcess) { 5148 TouchEventData ted = new TouchEventData(); 5149 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5150 ted.mX = contentX; 5151 ted.mY = contentY; 5152 ted.mMetaState = ev.getMetaState(); 5153 ted.mReprocess = mDeferTouchProcess; 5154 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5155 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5156 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5157 mTouchMode = TOUCH_DONE_MODE; 5158 } 5159 break; 5160 case TOUCH_INIT_MODE: // tap 5161 case TOUCH_SHORTPRESS_START_MODE: 5162 case TOUCH_SHORTPRESS_MODE: 5163 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5164 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5165 if (mConfirmMove) { 5166 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5167 " WebCore's response for touch down."); 5168 if (mPreventDefault != PREVENT_DEFAULT_YES 5169 && (computeMaxScrollX() > 0 5170 || computeMaxScrollY() > 0)) { 5171 // If the user has performed a very quick touch 5172 // sequence it is possible that we may get here 5173 // before WebCore has had a chance to process the events. 5174 // In this case, any call to preventDefault in the 5175 // JS touch handler will not have been executed yet. 5176 // Hence we will see both the UI (now) and WebCore 5177 // (when context switches) handling the event, 5178 // regardless of whether the web developer actually 5179 // doeses preventDefault in their touch handler. This 5180 // is the nature of our asynchronous touch model. 5181 5182 // we will not rewrite drag code here, but we 5183 // will try fling if it applies. 5184 WebViewCore.reducePriority(); 5185 // to get better performance, pause updating the 5186 // picture 5187 WebViewCore.pauseUpdatePicture(mWebViewCore); 5188 // fall through to TOUCH_DRAG_MODE 5189 } else { 5190 // WebKit may consume the touch event and modify 5191 // DOM. drawContentPicture() will be called with 5192 // animateSroll as true for better performance. 5193 // Force redraw in high-quality. 5194 invalidate(); 5195 break; 5196 } 5197 } else { 5198 if (mSelectingText) { 5199 // tapping on selection or controls does nothing 5200 if (!nativeHitSelection(contentX, contentY)) { 5201 selectionDone(); 5202 } 5203 break; 5204 } 5205 // only trigger double tap if the WebView is 5206 // scalable 5207 if (mTouchMode == TOUCH_INIT_MODE 5208 && (canZoomIn() || canZoomOut())) { 5209 mPrivateHandler.sendEmptyMessageDelayed( 5210 RELEASE_SINGLE_TAP, ViewConfiguration 5211 .getDoubleTapTimeout()); 5212 } else { 5213 doShortPress(); 5214 } 5215 break; 5216 } 5217 case TOUCH_DRAG_MODE: 5218 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5219 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5220 // if the user waits a while w/o moving before the 5221 // up, we don't want to do a fling 5222 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5223 if (mVelocityTracker == null) { 5224 Log.e(LOGTAG, "Got null mVelocityTracker when " 5225 + "mPreventDefault = " 5226 + mPreventDefault 5227 + " mDeferTouchProcess = " 5228 + mDeferTouchProcess); 5229 } 5230 mVelocityTracker.addMovement(ev); 5231 // set to MOTIONLESS_IGNORE so that it won't keep 5232 // removing and sending message in 5233 // drawCoreAndCursorRing() 5234 mHeldMotionless = MOTIONLESS_IGNORE; 5235 doFling(); 5236 break; 5237 } 5238 // redraw in high-quality, as we're done dragging 5239 mHeldMotionless = MOTIONLESS_TRUE; 5240 invalidate(); 5241 // fall through 5242 case TOUCH_DRAG_START_MODE: 5243 case TOUCH_DRAG_LAYER_MODE: 5244 // TOUCH_DRAG_START_MODE should not happen for the real 5245 // device as we almost certain will get a MOVE. But this 5246 // is possible on emulator. 5247 mLastVelocity = 0; 5248 WebViewCore.resumePriority(); 5249 WebViewCore.resumeUpdatePicture(mWebViewCore); 5250 break; 5251 } 5252 stopTouch(); 5253 break; 5254 } 5255 case MotionEvent.ACTION_CANCEL: { 5256 if (mTouchMode == TOUCH_DRAG_MODE) { 5257 invalidate(); 5258 } 5259 cancelWebCoreTouchEvent(contentX, contentY, false); 5260 cancelTouch(); 5261 break; 5262 } 5263 } 5264 return true; 5265 } 5266 5267 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5268 if (shouldForwardTouchEvent()) { 5269 if (removeEvents) { 5270 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5271 } 5272 TouchEventData ted = new TouchEventData(); 5273 ted.mX = x; 5274 ted.mY = y; 5275 ted.mAction = MotionEvent.ACTION_CANCEL; 5276 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5277 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5278 } 5279 } 5280 5281 private void startTouch(float x, float y, long eventTime) { 5282 // Remember where the motion event started 5283 mLastTouchX = x; 5284 mLastTouchY = y; 5285 mLastTouchTime = eventTime; 5286 mVelocityTracker = VelocityTracker.obtain(); 5287 mSnapScrollMode = SNAP_NONE; 5288 if (mDragTracker != null) { 5289 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5290 } 5291 } 5292 5293 private void startDrag() { 5294 WebViewCore.reducePriority(); 5295 // to get better performance, pause updating the picture 5296 WebViewCore.pauseUpdatePicture(mWebViewCore); 5297 if (!mDragFromTextInput) { 5298 nativeHideCursor(); 5299 } 5300 5301 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5302 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 5303 mZoomManager.invokeZoomPicker(); 5304 } 5305 } 5306 5307 private void doDrag(int deltaX, int deltaY) { 5308 if ((deltaX | deltaY) != 0) { 5309 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5310 deltaX = viewToContentDimension(deltaX); 5311 deltaY = viewToContentDimension(deltaY); 5312 if (nativeScrollLayer(mScrollingLayer, deltaX, deltaY)) { 5313 invalidate(); 5314 } 5315 return; 5316 } 5317 scrollBy(deltaX, deltaY); 5318 } 5319 mZoomManager.keepZoomPickerVisible(); 5320 } 5321 5322 private void stopTouch() { 5323 if (mDragTrackerHandler != null) { 5324 mDragTrackerHandler.stopDrag(); 5325 } 5326 // we also use mVelocityTracker == null to tell us that we are 5327 // not "moving around", so we can take the slower/prettier 5328 // mode in the drawing code 5329 if (mVelocityTracker != null) { 5330 mVelocityTracker.recycle(); 5331 mVelocityTracker = null; 5332 } 5333 } 5334 5335 private void cancelTouch() { 5336 if (mDragTrackerHandler != null) { 5337 mDragTrackerHandler.stopDrag(); 5338 } 5339 // we also use mVelocityTracker == null to tell us that we are 5340 // not "moving around", so we can take the slower/prettier 5341 // mode in the drawing code 5342 if (mVelocityTracker != null) { 5343 mVelocityTracker.recycle(); 5344 mVelocityTracker = null; 5345 } 5346 if (mTouchMode == TOUCH_DRAG_MODE || 5347 mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5348 WebViewCore.resumePriority(); 5349 WebViewCore.resumeUpdatePicture(mWebViewCore); 5350 } 5351 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5352 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5353 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5354 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5355 if (getSettings().supportTouchOnly()) { 5356 removeTouchHighlight(true); 5357 } 5358 mHeldMotionless = MOTIONLESS_TRUE; 5359 mTouchMode = TOUCH_DONE_MODE; 5360 nativeHideCursor(); 5361 } 5362 5363 private long mTrackballFirstTime = 0; 5364 private long mTrackballLastTime = 0; 5365 private float mTrackballRemainsX = 0.0f; 5366 private float mTrackballRemainsY = 0.0f; 5367 private int mTrackballXMove = 0; 5368 private int mTrackballYMove = 0; 5369 private boolean mSelectingText = false; 5370 private boolean mSelectionStarted = false; 5371 private boolean mExtendSelection = false; 5372 private boolean mDrawSelectionPointer = false; 5373 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5374 private static final int TRACKBALL_TIMEOUT = 200; 5375 private static final int TRACKBALL_WAIT = 100; 5376 private static final int TRACKBALL_SCALE = 400; 5377 private static final int TRACKBALL_SCROLL_COUNT = 5; 5378 private static final int TRACKBALL_MOVE_COUNT = 10; 5379 private static final int TRACKBALL_MULTIPLIER = 3; 5380 private static final int SELECT_CURSOR_OFFSET = 16; 5381 private int mSelectX = 0; 5382 private int mSelectY = 0; 5383 private boolean mFocusSizeChanged = false; 5384 private boolean mShiftIsPressed = false; 5385 private boolean mTrackballDown = false; 5386 private long mTrackballUpTime = 0; 5387 private long mLastCursorTime = 0; 5388 private Rect mLastCursorBounds; 5389 5390 // Set by default; BrowserActivity clears to interpret trackball data 5391 // directly for movement. Currently, the framework only passes 5392 // arrow key events, not trackball events, from one child to the next 5393 private boolean mMapTrackballToArrowKeys = true; 5394 5395 public void setMapTrackballToArrowKeys(boolean setMap) { 5396 mMapTrackballToArrowKeys = setMap; 5397 } 5398 5399 void resetTrackballTime() { 5400 mTrackballLastTime = 0; 5401 } 5402 5403 @Override 5404 public boolean onTrackballEvent(MotionEvent ev) { 5405 long time = ev.getEventTime(); 5406 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5407 if (ev.getY() > 0) pageDown(true); 5408 if (ev.getY() < 0) pageUp(true); 5409 return true; 5410 } 5411 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5412 if (mSelectingText) { 5413 return true; // discard press if copy in progress 5414 } 5415 mTrackballDown = true; 5416 if (mNativeClass == 0) { 5417 return false; 5418 } 5419 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5420 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5421 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5422 nativeSelectBestAt(mLastCursorBounds); 5423 } 5424 if (DebugFlags.WEB_VIEW) { 5425 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5426 + " time=" + time 5427 + " mLastCursorTime=" + mLastCursorTime); 5428 } 5429 if (isInTouchMode()) requestFocusFromTouch(); 5430 return false; // let common code in onKeyDown at it 5431 } 5432 if (ev.getAction() == MotionEvent.ACTION_UP) { 5433 // LONG_PRESS_CENTER is set in common onKeyDown 5434 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5435 mTrackballDown = false; 5436 mTrackballUpTime = time; 5437 if (mSelectingText) { 5438 if (mExtendSelection) { 5439 copySelection(); 5440 selectionDone(); 5441 } else { 5442 mExtendSelection = true; 5443 nativeSetExtendSelection(); 5444 invalidate(); // draw the i-beam instead of the arrow 5445 } 5446 return true; // discard press if copy in progress 5447 } 5448 if (DebugFlags.WEB_VIEW) { 5449 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5450 + " time=" + time 5451 ); 5452 } 5453 return false; // let common code in onKeyUp at it 5454 } 5455 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5456 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5457 return false; 5458 } 5459 if (mTrackballDown) { 5460 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5461 return true; // discard move if trackball is down 5462 } 5463 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5464 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5465 return true; 5466 } 5467 // TODO: alternatively we can do panning as touch does 5468 switchOutDrawHistory(); 5469 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5470 if (DebugFlags.WEB_VIEW) { 5471 Log.v(LOGTAG, "onTrackballEvent time=" 5472 + time + " last=" + mTrackballLastTime); 5473 } 5474 mTrackballFirstTime = time; 5475 mTrackballXMove = mTrackballYMove = 0; 5476 } 5477 mTrackballLastTime = time; 5478 if (DebugFlags.WEB_VIEW) { 5479 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5480 } 5481 mTrackballRemainsX += ev.getX(); 5482 mTrackballRemainsY += ev.getY(); 5483 doTrackball(time); 5484 return true; 5485 } 5486 5487 void moveSelection(float xRate, float yRate) { 5488 if (mNativeClass == 0) 5489 return; 5490 int width = getViewWidth(); 5491 int height = getViewHeight(); 5492 mSelectX += xRate; 5493 mSelectY += yRate; 5494 int maxX = width + mScrollX; 5495 int maxY = height + mScrollY; 5496 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5497 , mSelectX)); 5498 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5499 , mSelectY)); 5500 if (DebugFlags.WEB_VIEW) { 5501 Log.v(LOGTAG, "moveSelection" 5502 + " mSelectX=" + mSelectX 5503 + " mSelectY=" + mSelectY 5504 + " mScrollX=" + mScrollX 5505 + " mScrollY=" + mScrollY 5506 + " xRate=" + xRate 5507 + " yRate=" + yRate 5508 ); 5509 } 5510 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5511 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5512 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5513 : 0; 5514 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5515 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5516 : 0; 5517 pinScrollBy(scrollX, scrollY, true, 0); 5518 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5519 requestRectangleOnScreen(select); 5520 invalidate(); 5521 } 5522 5523 private int scaleTrackballX(float xRate, int width) { 5524 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5525 int nextXMove = xMove; 5526 if (xMove > 0) { 5527 if (xMove > mTrackballXMove) { 5528 xMove -= mTrackballXMove; 5529 } 5530 } else if (xMove < mTrackballXMove) { 5531 xMove -= mTrackballXMove; 5532 } 5533 mTrackballXMove = nextXMove; 5534 return xMove; 5535 } 5536 5537 private int scaleTrackballY(float yRate, int height) { 5538 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5539 int nextYMove = yMove; 5540 if (yMove > 0) { 5541 if (yMove > mTrackballYMove) { 5542 yMove -= mTrackballYMove; 5543 } 5544 } else if (yMove < mTrackballYMove) { 5545 yMove -= mTrackballYMove; 5546 } 5547 mTrackballYMove = nextYMove; 5548 return yMove; 5549 } 5550 5551 private int keyCodeToSoundsEffect(int keyCode) { 5552 switch(keyCode) { 5553 case KeyEvent.KEYCODE_DPAD_UP: 5554 return SoundEffectConstants.NAVIGATION_UP; 5555 case KeyEvent.KEYCODE_DPAD_RIGHT: 5556 return SoundEffectConstants.NAVIGATION_RIGHT; 5557 case KeyEvent.KEYCODE_DPAD_DOWN: 5558 return SoundEffectConstants.NAVIGATION_DOWN; 5559 case KeyEvent.KEYCODE_DPAD_LEFT: 5560 return SoundEffectConstants.NAVIGATION_LEFT; 5561 } 5562 throw new IllegalArgumentException("keyCode must be one of " + 5563 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5564 "KEYCODE_DPAD_LEFT}."); 5565 } 5566 5567 private void doTrackball(long time) { 5568 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5569 if (elapsed == 0) { 5570 elapsed = TRACKBALL_TIMEOUT; 5571 } 5572 float xRate = mTrackballRemainsX * 1000 / elapsed; 5573 float yRate = mTrackballRemainsY * 1000 / elapsed; 5574 int viewWidth = getViewWidth(); 5575 int viewHeight = getViewHeight(); 5576 if (mSelectingText) { 5577 if (!mDrawSelectionPointer) { 5578 // The last selection was made by touch, disabling drawing the 5579 // selection pointer. Allow the trackball to adjust the 5580 // position of the touch control. 5581 mSelectX = contentToViewX(nativeSelectionX()); 5582 mSelectY = contentToViewY(nativeSelectionY()); 5583 mDrawSelectionPointer = mExtendSelection = true; 5584 nativeSetExtendSelection(); 5585 } 5586 moveSelection(scaleTrackballX(xRate, viewWidth), 5587 scaleTrackballY(yRate, viewHeight)); 5588 mTrackballRemainsX = mTrackballRemainsY = 0; 5589 return; 5590 } 5591 float ax = Math.abs(xRate); 5592 float ay = Math.abs(yRate); 5593 float maxA = Math.max(ax, ay); 5594 if (DebugFlags.WEB_VIEW) { 5595 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5596 + " xRate=" + xRate 5597 + " yRate=" + yRate 5598 + " mTrackballRemainsX=" + mTrackballRemainsX 5599 + " mTrackballRemainsY=" + mTrackballRemainsY); 5600 } 5601 int width = mContentWidth - viewWidth; 5602 int height = mContentHeight - viewHeight; 5603 if (width < 0) width = 0; 5604 if (height < 0) height = 0; 5605 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5606 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5607 maxA = Math.max(ax, ay); 5608 int count = Math.max(0, (int) maxA); 5609 int oldScrollX = mScrollX; 5610 int oldScrollY = mScrollY; 5611 if (count > 0) { 5612 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5613 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5614 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5615 KeyEvent.KEYCODE_DPAD_RIGHT; 5616 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5617 if (DebugFlags.WEB_VIEW) { 5618 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5619 + " count=" + count 5620 + " mTrackballRemainsX=" + mTrackballRemainsX 5621 + " mTrackballRemainsY=" + mTrackballRemainsY); 5622 } 5623 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 5624 for (int i = 0; i < count; i++) { 5625 letPageHandleNavKey(selectKeyCode, time, true); 5626 } 5627 letPageHandleNavKey(selectKeyCode, time, false); 5628 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5629 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5630 } 5631 mTrackballRemainsX = mTrackballRemainsY = 0; 5632 } 5633 if (count >= TRACKBALL_SCROLL_COUNT) { 5634 int xMove = scaleTrackballX(xRate, width); 5635 int yMove = scaleTrackballY(yRate, height); 5636 if (DebugFlags.WEB_VIEW) { 5637 Log.v(LOGTAG, "doTrackball pinScrollBy" 5638 + " count=" + count 5639 + " xMove=" + xMove + " yMove=" + yMove 5640 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5641 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5642 ); 5643 } 5644 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5645 xMove = 0; 5646 } 5647 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5648 yMove = 0; 5649 } 5650 if (xMove != 0 || yMove != 0) { 5651 pinScrollBy(xMove, yMove, true, 0); 5652 } 5653 mUserScroll = true; 5654 } 5655 } 5656 5657 private int computeMaxScrollX() { 5658 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5659 } 5660 5661 private int computeMaxScrollY() { 5662 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5663 - getViewHeightWithTitle(), 0); 5664 } 5665 5666 boolean updateScrollCoordinates(int x, int y) { 5667 int oldX = mScrollX; 5668 int oldY = mScrollY; 5669 mScrollX = x; 5670 mScrollY = y; 5671 if (oldX != mScrollX || oldY != mScrollY) { 5672 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 5673 return true; 5674 } else { 5675 return false; 5676 } 5677 } 5678 5679 public void flingScroll(int vx, int vy) { 5680 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5681 computeMaxScrollY()); 5682 invalidate(); 5683 } 5684 5685 private void doFling() { 5686 if (mVelocityTracker == null) { 5687 return; 5688 } 5689 int maxX = computeMaxScrollX(); 5690 int maxY = computeMaxScrollY(); 5691 5692 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5693 int vx = (int) mVelocityTracker.getXVelocity(); 5694 int vy = (int) mVelocityTracker.getYVelocity(); 5695 5696 if (mSnapScrollMode != SNAP_NONE) { 5697 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5698 vy = 0; 5699 } else { 5700 vx = 0; 5701 } 5702 } 5703 if (true /* EMG release: make our fling more like Maps' */) { 5704 // maps cuts their velocity in half 5705 vx = vx * 3 / 4; 5706 vy = vy * 3 / 4; 5707 } 5708 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5709 WebViewCore.resumePriority(); 5710 WebViewCore.resumeUpdatePicture(mWebViewCore); 5711 return; 5712 } 5713 float currentVelocity = mScroller.getCurrVelocity(); 5714 float velocity = (float) Math.hypot(vx, vy); 5715 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 5716 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 5717 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5718 - Math.atan2(vy, vx))); 5719 final float circle = (float) (Math.PI) * 2.0f; 5720 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5721 vx += currentVelocity * mLastVelX / mLastVelocity; 5722 vy += currentVelocity * mLastVelY / mLastVelocity; 5723 velocity = (float) Math.hypot(vx, vy); 5724 if (DebugFlags.WEB_VIEW) { 5725 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5726 } 5727 } else if (DebugFlags.WEB_VIEW) { 5728 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5729 } 5730 } else if (DebugFlags.WEB_VIEW) { 5731 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5732 + " current=" + currentVelocity 5733 + " vx=" + vx + " vy=" + vy 5734 + " maxX=" + maxX + " maxY=" + maxY 5735 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5736 } 5737 mLastVelX = vx; 5738 mLastVelY = vy; 5739 mLastVelocity = velocity; 5740 5741 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5742 final int time = mScroller.getDuration(); 5743 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5744 awakenScrollBars(time); 5745 invalidate(); 5746 } 5747 5748 /** 5749 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5750 * in charge of installing this view to the view hierarchy. This view will 5751 * become visible when the user starts scrolling via touch and fade away if 5752 * the user does not interact with it. 5753 * <p/> 5754 * API version 3 introduces a built-in zoom mechanism that is shown 5755 * automatically by the MapView. This is the preferred approach for 5756 * showing the zoom UI. 5757 * 5758 * @deprecated The built-in zoom mechanism is preferred, see 5759 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5760 */ 5761 @Deprecated 5762 public View getZoomControls() { 5763 if (!getSettings().supportZoom()) { 5764 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5765 return null; 5766 } 5767 return mZoomManager.getExternalZoomPicker(); 5768 } 5769 5770 void dismissZoomControl() { 5771 mZoomManager.dismissZoomPicker(); 5772 } 5773 5774 float getDefaultZoomScale() { 5775 return mZoomManager.getDefaultScale(); 5776 } 5777 5778 /** 5779 * @return TRUE if the WebView can be zoomed in. 5780 */ 5781 public boolean canZoomIn() { 5782 return mZoomManager.canZoomIn(); 5783 } 5784 5785 /** 5786 * @return TRUE if the WebView can be zoomed out. 5787 */ 5788 public boolean canZoomOut() { 5789 return mZoomManager.canZoomOut(); 5790 } 5791 5792 /** 5793 * Perform zoom in in the webview 5794 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5795 */ 5796 public boolean zoomIn() { 5797 return mZoomManager.zoomIn(); 5798 } 5799 5800 /** 5801 * Perform zoom out in the webview 5802 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5803 */ 5804 public boolean zoomOut() { 5805 return mZoomManager.zoomOut(); 5806 } 5807 5808 private void updateSelection() { 5809 if (mNativeClass == 0) { 5810 return; 5811 } 5812 // mLastTouchX and mLastTouchY are the point in the current viewport 5813 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5814 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5815 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5816 contentX + mNavSlop, contentY + mNavSlop); 5817 nativeSelectBestAt(rect); 5818 } 5819 5820 /** 5821 * Scroll the focused text field/area to match the WebTextView 5822 * @param xPercent New x position of the WebTextView from 0 to 1. 5823 * @param y New y position of the WebTextView in view coordinates 5824 */ 5825 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5826 if (!inEditingMode() || mWebViewCore == null) { 5827 return; 5828 } 5829 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5830 // Since this position is relative to the top of the text input 5831 // field, we do not need to take the title bar's height into 5832 // consideration. 5833 viewToContentDimension(y), 5834 new Float(xPercent)); 5835 } 5836 5837 /** 5838 * Set our starting point and time for a drag from the WebTextView. 5839 */ 5840 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5841 if (!inEditingMode()) { 5842 return; 5843 } 5844 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5845 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5846 mLastTouchTime = eventTime; 5847 if (!mScroller.isFinished()) { 5848 abortAnimation(); 5849 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5850 } 5851 mSnapScrollMode = SNAP_NONE; 5852 mVelocityTracker = VelocityTracker.obtain(); 5853 mTouchMode = TOUCH_DRAG_START_MODE; 5854 } 5855 5856 /** 5857 * Given a motion event from the WebTextView, set its location to our 5858 * coordinates, and handle the event. 5859 */ 5860 /*package*/ boolean textFieldDrag(MotionEvent event) { 5861 if (!inEditingMode()) { 5862 return false; 5863 } 5864 mDragFromTextInput = true; 5865 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5866 (float) (mWebTextView.getTop() - mScrollY)); 5867 boolean result = onTouchEvent(event); 5868 mDragFromTextInput = false; 5869 return result; 5870 } 5871 5872 /** 5873 * Due a touch up from a WebTextView. This will be handled by webkit to 5874 * change the selection. 5875 * @param event MotionEvent in the WebTextView's coordinates. 5876 */ 5877 /*package*/ void touchUpOnTextField(MotionEvent event) { 5878 if (!inEditingMode()) { 5879 return; 5880 } 5881 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5882 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5883 nativeMotionUp(x, y, mNavSlop); 5884 } 5885 5886 /** 5887 * Called when pressing the center key or trackball on a textfield. 5888 */ 5889 /*package*/ void centerKeyPressOnTextField() { 5890 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5891 nativeCursorNodePointer()); 5892 } 5893 5894 private void doShortPress() { 5895 if (mNativeClass == 0) { 5896 return; 5897 } 5898 if (mPreventDefault == PREVENT_DEFAULT_YES) { 5899 return; 5900 } 5901 mTouchMode = TOUCH_DONE_MODE; 5902 switchOutDrawHistory(); 5903 // mLastTouchX and mLastTouchY are the point in the current viewport 5904 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5905 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5906 if (getSettings().supportTouchOnly()) { 5907 removeTouchHighlight(false); 5908 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5909 // use "0" as generation id to inform WebKit to use the same x/y as 5910 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 5911 touchUpData.mMoveGeneration = 0; 5912 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5913 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5914 WebViewCore.MotionUpData motionUpData = new WebViewCore 5915 .MotionUpData(); 5916 motionUpData.mFrame = nativeCacheHitFramePointer(); 5917 motionUpData.mNode = nativeCacheHitNodePointer(); 5918 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5919 motionUpData.mX = contentX; 5920 motionUpData.mY = contentY; 5921 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5922 motionUpData); 5923 } else { 5924 doMotionUp(contentX, contentY); 5925 } 5926 } 5927 5928 private void doMotionUp(int contentX, int contentY) { 5929 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5930 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5931 } 5932 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5933 playSoundEffect(SoundEffectConstants.CLICK); 5934 } 5935 } 5936 5937 /* 5938 * Return true if the view (Plugin) is fully visible and maximized inside 5939 * the WebView. 5940 */ 5941 boolean isPluginFitOnScreen(ViewManager.ChildView view) { 5942 final int viewWidth = getViewWidth(); 5943 final int viewHeight = getViewHeightWithTitle(); 5944 float scale = Math.min((float) viewWidth / view.width, (float) viewHeight / view.height); 5945 scale = mZoomManager.computeScaleWithLimits(scale); 5946 return !mZoomManager.willScaleTriggerZoom(scale) 5947 && contentToViewX(view.x) >= mScrollX 5948 && contentToViewX(view.x + view.width) <= mScrollX + viewWidth 5949 && contentToViewY(view.y) >= mScrollY 5950 && contentToViewY(view.y + view.height) <= mScrollY + viewHeight; 5951 } 5952 5953 /* 5954 * Maximize and center the rectangle, specified in the document coordinate 5955 * space, inside the WebView. If the zoom doesn't need to be changed, do an 5956 * animated scroll to center it. If the zoom needs to be changed, find the 5957 * zoom center and do a smooth zoom transition. 5958 */ 5959 void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 5960 int viewWidth = getViewWidth(); 5961 int viewHeight = getViewHeightWithTitle(); 5962 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 5963 / docHeight); 5964 scale = mZoomManager.computeScaleWithLimits(scale); 5965 if (!mZoomManager.willScaleTriggerZoom(scale)) { 5966 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 5967 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 5968 true, 0); 5969 } else { 5970 float actualScale = mZoomManager.getScale(); 5971 float oldScreenX = docX * actualScale - mScrollX; 5972 float rectViewX = docX * scale; 5973 float rectViewWidth = docWidth * scale; 5974 float newMaxWidth = mContentWidth * scale; 5975 float newScreenX = (viewWidth - rectViewWidth) / 2; 5976 // pin the newX to the WebView 5977 if (newScreenX > rectViewX) { 5978 newScreenX = rectViewX; 5979 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 5980 newScreenX = viewWidth - (newMaxWidth - rectViewX); 5981 } 5982 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 5983 / (scale - actualScale); 5984 float oldScreenY = docY * actualScale + getTitleHeight() 5985 - mScrollY; 5986 float rectViewY = docY * scale + getTitleHeight(); 5987 float rectViewHeight = docHeight * scale; 5988 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 5989 float newScreenY = (viewHeight - rectViewHeight) / 2; 5990 // pin the newY to the WebView 5991 if (newScreenY > rectViewY) { 5992 newScreenY = rectViewY; 5993 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 5994 newScreenY = viewHeight - (newMaxHeight - rectViewY); 5995 } 5996 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 5997 / (scale - actualScale); 5998 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 5999 mZoomManager.startZoomAnimation(scale, false); 6000 } 6001 } 6002 6003 // Called by JNI to handle a touch on a node representing an email address, 6004 // address, or phone number 6005 private void overrideLoading(String url) { 6006 mCallbackProxy.uiOverrideUrlLoading(url); 6007 } 6008 6009 @Override 6010 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6011 // FIXME: If a subwindow is showing find, and the user touches the 6012 // background window, it can steal focus. 6013 if (mFindIsUp) return false; 6014 boolean result = false; 6015 if (inEditingMode()) { 6016 result = mWebTextView.requestFocus(direction, 6017 previouslyFocusedRect); 6018 } else { 6019 result = super.requestFocus(direction, previouslyFocusedRect); 6020 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6021 // For cases such as GMail, where we gain focus from a direction, 6022 // we want to move to the first available link. 6023 // FIXME: If there are no visible links, we may not want to 6024 int fakeKeyDirection = 0; 6025 switch(direction) { 6026 case View.FOCUS_UP: 6027 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6028 break; 6029 case View.FOCUS_DOWN: 6030 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6031 break; 6032 case View.FOCUS_LEFT: 6033 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6034 break; 6035 case View.FOCUS_RIGHT: 6036 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6037 break; 6038 default: 6039 return result; 6040 } 6041 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6042 navHandledKey(fakeKeyDirection, 1, true, 0); 6043 } 6044 } 6045 } 6046 return result; 6047 } 6048 6049 @Override 6050 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6051 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6052 6053 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6054 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6055 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6056 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6057 6058 int measuredHeight = heightSize; 6059 int measuredWidth = widthSize; 6060 6061 // Grab the content size from WebViewCore. 6062 int contentHeight = contentToViewDimension(mContentHeight); 6063 int contentWidth = contentToViewDimension(mContentWidth); 6064 6065// Log.d(LOGTAG, "------- measure " + heightMode); 6066 6067 if (heightMode != MeasureSpec.EXACTLY) { 6068 mHeightCanMeasure = true; 6069 measuredHeight = contentHeight; 6070 if (heightMode == MeasureSpec.AT_MOST) { 6071 // If we are larger than the AT_MOST height, then our height can 6072 // no longer be measured and we should scroll internally. 6073 if (measuredHeight > heightSize) { 6074 measuredHeight = heightSize; 6075 mHeightCanMeasure = false; 6076 } 6077 } 6078 } else { 6079 mHeightCanMeasure = false; 6080 } 6081 if (mNativeClass != 0) { 6082 nativeSetHeightCanMeasure(mHeightCanMeasure); 6083 } 6084 // For the width, always use the given size unless unspecified. 6085 if (widthMode == MeasureSpec.UNSPECIFIED) { 6086 mWidthCanMeasure = true; 6087 measuredWidth = contentWidth; 6088 } else { 6089 mWidthCanMeasure = false; 6090 } 6091 6092 synchronized (this) { 6093 setMeasuredDimension(measuredWidth, measuredHeight); 6094 } 6095 } 6096 6097 @Override 6098 public boolean requestChildRectangleOnScreen(View child, 6099 Rect rect, 6100 boolean immediate) { 6101 // don't scroll while in zoom animation. When it is done, we will adjust 6102 // the necessary components (e.g., WebTextView if it is in editing mode) 6103 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6104 return false; 6105 } 6106 6107 rect.offset(child.getLeft() - child.getScrollX(), 6108 child.getTop() - child.getScrollY()); 6109 6110 Rect content = new Rect(viewToContentX(mScrollX), 6111 viewToContentY(mScrollY), 6112 viewToContentX(mScrollX + getWidth() 6113 - getVerticalScrollbarWidth()), 6114 viewToContentY(mScrollY + getViewHeightWithTitle())); 6115 content = nativeSubtractLayers(content); 6116 int screenTop = contentToViewY(content.top); 6117 int screenBottom = contentToViewY(content.bottom); 6118 int height = screenBottom - screenTop; 6119 int scrollYDelta = 0; 6120 6121 if (rect.bottom > screenBottom) { 6122 int oneThirdOfScreenHeight = height / 3; 6123 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6124 // If the rectangle is too tall to fit in the bottom two thirds 6125 // of the screen, place it at the top. 6126 scrollYDelta = rect.top - screenTop; 6127 } else { 6128 // If the rectangle will still fit on screen, we want its 6129 // top to be in the top third of the screen. 6130 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6131 } 6132 } else if (rect.top < screenTop) { 6133 scrollYDelta = rect.top - screenTop; 6134 } 6135 6136 int screenLeft = contentToViewX(content.left); 6137 int screenRight = contentToViewX(content.right); 6138 int width = screenRight - screenLeft; 6139 int scrollXDelta = 0; 6140 6141 if (rect.right > screenRight && rect.left > screenLeft) { 6142 if (rect.width() > width) { 6143 scrollXDelta += (rect.left - screenLeft); 6144 } else { 6145 scrollXDelta += (rect.right - screenRight); 6146 } 6147 } else if (rect.left < screenLeft) { 6148 scrollXDelta -= (screenLeft - rect.left); 6149 } 6150 6151 if ((scrollYDelta | scrollXDelta) != 0) { 6152 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6153 } 6154 6155 return false; 6156 } 6157 6158 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6159 String replace, int newStart, int newEnd) { 6160 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6161 arg.mReplace = replace; 6162 arg.mNewStart = newStart; 6163 arg.mNewEnd = newEnd; 6164 mTextGeneration++; 6165 arg.mTextGeneration = mTextGeneration; 6166 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6167 } 6168 6169 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6170 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6171 arg.mEvent = event; 6172 arg.mCurrentText = currentText; 6173 // Increase our text generation number, and pass it to webcore thread 6174 mTextGeneration++; 6175 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6176 // WebKit's document state is not saved until about to leave the page. 6177 // To make sure the host application, like Browser, has the up to date 6178 // document state when it goes to background, we force to save the 6179 // document state. 6180 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6181 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6182 cursorData(), 1000); 6183 } 6184 6185 /* package */ synchronized WebViewCore getWebViewCore() { 6186 return mWebViewCore; 6187 } 6188 6189 //------------------------------------------------------------------------- 6190 // Methods can be called from a separate thread, like WebViewCore 6191 // If it needs to call the View system, it has to send message. 6192 //------------------------------------------------------------------------- 6193 6194 /** 6195 * General handler to receive message coming from webkit thread 6196 */ 6197 class PrivateHandler extends Handler { 6198 @Override 6199 public void handleMessage(Message msg) { 6200 // exclude INVAL_RECT_MSG_ID since it is frequently output 6201 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6202 if (msg.what >= FIRST_PRIVATE_MSG_ID 6203 && msg.what <= LAST_PRIVATE_MSG_ID) { 6204 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6205 - FIRST_PRIVATE_MSG_ID]); 6206 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6207 && msg.what <= LAST_PACKAGE_MSG_ID) { 6208 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6209 - FIRST_PACKAGE_MSG_ID]); 6210 } else { 6211 Log.v(LOGTAG, Integer.toString(msg.what)); 6212 } 6213 } 6214 if (mWebViewCore == null) { 6215 // after WebView's destroy() is called, skip handling messages. 6216 return; 6217 } 6218 switch (msg.what) { 6219 case REMEMBER_PASSWORD: { 6220 mDatabase.setUsernamePassword( 6221 msg.getData().getString("host"), 6222 msg.getData().getString("username"), 6223 msg.getData().getString("password")); 6224 ((Message) msg.obj).sendToTarget(); 6225 break; 6226 } 6227 case NEVER_REMEMBER_PASSWORD: { 6228 mDatabase.setUsernamePassword( 6229 msg.getData().getString("host"), null, null); 6230 ((Message) msg.obj).sendToTarget(); 6231 break; 6232 } 6233 case PREVENT_DEFAULT_TIMEOUT: { 6234 // if timeout happens, cancel it so that it won't block UI 6235 // to continue handling touch events 6236 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6237 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6238 || (msg.arg1 == MotionEvent.ACTION_MOVE 6239 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6240 cancelWebCoreTouchEvent( 6241 viewToContentX((int) mLastTouchX + mScrollX), 6242 viewToContentY((int) mLastTouchY + mScrollY), 6243 true); 6244 } 6245 break; 6246 } 6247 case SWITCH_TO_SHORTPRESS: { 6248 if (mTouchMode == TOUCH_INIT_MODE) { 6249 if (!getSettings().supportTouchOnly() 6250 && mPreventDefault != PREVENT_DEFAULT_YES) { 6251 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6252 updateSelection(); 6253 } else { 6254 // set to TOUCH_SHORTPRESS_MODE so that it won't 6255 // trigger double tap any more 6256 mTouchMode = TOUCH_SHORTPRESS_MODE; 6257 } 6258 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6259 mTouchMode = TOUCH_DONE_MODE; 6260 } 6261 break; 6262 } 6263 case SWITCH_TO_LONGPRESS: { 6264 if (getSettings().supportTouchOnly()) { 6265 removeTouchHighlight(false); 6266 } 6267 if (inFullScreenMode() || mDeferTouchProcess) { 6268 TouchEventData ted = new TouchEventData(); 6269 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6270 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6271 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6272 // metaState for long press is tricky. Should it be the 6273 // state when the press started or when the press was 6274 // released? Or some intermediary key state? For 6275 // simplicity for now, we don't set it. 6276 ted.mMetaState = 0; 6277 ted.mReprocess = mDeferTouchProcess; 6278 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6279 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6280 mTouchMode = TOUCH_DONE_MODE; 6281 performLongClick(); 6282 } 6283 break; 6284 } 6285 case RELEASE_SINGLE_TAP: { 6286 doShortPress(); 6287 break; 6288 } 6289 case SCROLL_BY_MSG_ID: 6290 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6291 break; 6292 case SYNC_SCROLL_TO_MSG_ID: 6293 if (mUserScroll) { 6294 // if user has scrolled explicitly, don't sync the 6295 // scroll position any more 6296 mUserScroll = false; 6297 break; 6298 } 6299 // fall through 6300 case SCROLL_TO_MSG_ID: 6301 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6302 // if we can't scroll to the exact position due to pin, 6303 // send a message to WebCore to re-scroll when we get a 6304 // new picture 6305 mUserScroll = false; 6306 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6307 msg.arg1, msg.arg2); 6308 } 6309 break; 6310 case SPAWN_SCROLL_TO_MSG_ID: 6311 spawnContentScrollTo(msg.arg1, msg.arg2); 6312 break; 6313 case UPDATE_ZOOM_RANGE: { 6314 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 6315 // mScrollX contains the new minPrefWidth 6316 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 6317 break; 6318 } 6319 case REPLACE_BASE_CONTENT: { 6320 nativeReplaceBaseContent(msg.arg1); 6321 break; 6322 } 6323 case NEW_PICTURE_MSG_ID: { 6324 // called for new content 6325 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 6326 nativeSetBaseLayer(draw.mBaseLayer); 6327 final Point viewSize = draw.mViewPoint; 6328 WebViewCore.ViewState viewState = draw.mViewState; 6329 boolean isPictureAfterFirstLayout = viewState != null; 6330 if (isPictureAfterFirstLayout) { 6331 // Reset the last sent data here since dealing with new page. 6332 mLastWidthSent = 0; 6333 mZoomManager.onFirstLayout(draw); 6334 if (!mDrawHistory) { 6335 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 6336 // As we are on a new page, remove the WebTextView. This 6337 // is necessary for page loads driven by webkit, and in 6338 // particular when the user was on a password field, so 6339 // the WebTextView was visible. 6340 clearTextEntry(); 6341 } 6342 } 6343 6344 // We update the layout (i.e. request a layout from the 6345 // view system) if the last view size that we sent to 6346 // WebCore matches the view size of the picture we just 6347 // received in the fixed dimension. 6348 final boolean updateLayout = viewSize.x == mLastWidthSent 6349 && viewSize.y == mLastHeightSent; 6350 recordNewContentSize(draw.mWidthHeight.x, 6351 draw.mWidthHeight.y, updateLayout); 6352 if (DebugFlags.WEB_VIEW) { 6353 Rect b = draw.mInvalRegion.getBounds(); 6354 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6355 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6356 } 6357 invalidateContentRect(draw.mInvalRegion.getBounds()); 6358 6359 if (mPictureListener != null) { 6360 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6361 } 6362 6363 // update the zoom information based on the new picture 6364 mZoomManager.onNewPicture(draw); 6365 6366 if (draw.mFocusSizeChanged && inEditingMode()) { 6367 mFocusSizeChanged = true; 6368 } 6369 if (isPictureAfterFirstLayout) { 6370 mViewManager.postReadyToDrawAll(); 6371 } 6372 break; 6373 } 6374 case WEBCORE_INITIALIZED_MSG_ID: 6375 // nativeCreate sets mNativeClass to a non-zero value 6376 nativeCreate(msg.arg1); 6377 break; 6378 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6379 // Make sure that the textfield is currently focused 6380 // and representing the same node as the pointer. 6381 if (inEditingMode() && 6382 mWebTextView.isSameTextField(msg.arg1)) { 6383 if (msg.getData().getBoolean("password")) { 6384 Spannable text = (Spannable) mWebTextView.getText(); 6385 int start = Selection.getSelectionStart(text); 6386 int end = Selection.getSelectionEnd(text); 6387 mWebTextView.setInPassword(true); 6388 // Restore the selection, which may have been 6389 // ruined by setInPassword. 6390 Spannable pword = 6391 (Spannable) mWebTextView.getText(); 6392 Selection.setSelection(pword, start, end); 6393 // If the text entry has created more events, ignore 6394 // this one. 6395 } else if (msg.arg2 == mTextGeneration) { 6396 mWebTextView.setTextAndKeepSelection( 6397 (String) msg.obj); 6398 } 6399 } 6400 break; 6401 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6402 displaySoftKeyboard(true); 6403 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 6404 case UPDATE_TEXT_SELECTION_MSG_ID: 6405 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6406 (WebViewCore.TextSelectionData) msg.obj); 6407 break; 6408 case RETURN_LABEL: 6409 if (inEditingMode() 6410 && mWebTextView.isSameTextField(msg.arg1)) { 6411 mWebTextView.setHint((String) msg.obj); 6412 InputMethodManager imm 6413 = InputMethodManager.peekInstance(); 6414 // The hint is propagated to the IME in 6415 // onCreateInputConnection. If the IME is already 6416 // active, restart it so that its hint text is updated. 6417 if (imm != null && imm.isActive(mWebTextView)) { 6418 imm.restartInput(mWebTextView); 6419 } 6420 } 6421 break; 6422 case UNHANDLED_NAV_KEY: 6423 navHandledKey(msg.arg1, 1, false, 0); 6424 break; 6425 case UPDATE_TEXT_ENTRY_MSG_ID: 6426 // this is sent after finishing resize in WebViewCore. Make 6427 // sure the text edit box is still on the screen. 6428 if (inEditingMode() && nativeCursorIsTextInput()) { 6429 mWebTextView.bringIntoView(); 6430 rebuildWebTextView(); 6431 } 6432 break; 6433 case CLEAR_TEXT_ENTRY: 6434 clearTextEntry(); 6435 break; 6436 case INVAL_RECT_MSG_ID: { 6437 Rect r = (Rect)msg.obj; 6438 if (r == null) { 6439 invalidate(); 6440 } else { 6441 // we need to scale r from content into view coords, 6442 // which viewInvalidate() does for us 6443 viewInvalidate(r.left, r.top, r.right, r.bottom); 6444 } 6445 break; 6446 } 6447 case REQUEST_FORM_DATA: 6448 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6449 if (mWebTextView.isSameTextField(msg.arg1)) { 6450 mWebTextView.setAdapterCustom(adapter); 6451 } 6452 break; 6453 case RESUME_WEBCORE_PRIORITY: 6454 WebViewCore.resumePriority(); 6455 WebViewCore.resumeUpdatePicture(mWebViewCore); 6456 break; 6457 6458 case LONG_PRESS_CENTER: 6459 // as this is shared by keydown and trackballdown, reset all 6460 // the states 6461 mGotCenterDown = false; 6462 mTrackballDown = false; 6463 performLongClick(); 6464 break; 6465 6466 case WEBCORE_NEED_TOUCH_EVENTS: 6467 mForwardTouchEvents = (msg.arg1 != 0); 6468 break; 6469 6470 case PREVENT_TOUCH_ID: 6471 if (inFullScreenMode()) { 6472 break; 6473 } 6474 if (msg.obj == null) { 6475 if (msg.arg1 == MotionEvent.ACTION_DOWN 6476 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6477 // if prevent default is called from WebCore, UI 6478 // will not handle the rest of the touch events any 6479 // more. 6480 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6481 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6482 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6483 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6484 // the return for the first ACTION_MOVE will decide 6485 // whether UI will handle touch or not. Currently no 6486 // support for alternating prevent default 6487 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6488 : PREVENT_DEFAULT_NO; 6489 } 6490 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6491 mTouchHighlightRegion.setEmpty(); 6492 } 6493 } else if (msg.arg2 == 0) { 6494 // prevent default is not called in WebCore, so the 6495 // message needs to be reprocessed in UI 6496 TouchEventData ted = (TouchEventData) msg.obj; 6497 switch (ted.mAction) { 6498 case MotionEvent.ACTION_DOWN: 6499 mLastDeferTouchX = contentToViewX(ted.mX) 6500 - mScrollX; 6501 mLastDeferTouchY = contentToViewY(ted.mY) 6502 - mScrollY; 6503 mDeferTouchMode = TOUCH_INIT_MODE; 6504 break; 6505 case MotionEvent.ACTION_MOVE: { 6506 // no snapping in defer process 6507 int x = contentToViewX(ted.mX) - mScrollX; 6508 int y = contentToViewY(ted.mY) - mScrollY; 6509 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6510 mDeferTouchMode = TOUCH_DRAG_MODE; 6511 mLastDeferTouchX = x; 6512 mLastDeferTouchY = y; 6513 startDrag(); 6514 } 6515 int deltaX = pinLocX((int) (mScrollX 6516 + mLastDeferTouchX - x)) 6517 - mScrollX; 6518 int deltaY = pinLocY((int) (mScrollY 6519 + mLastDeferTouchY - y)) 6520 - mScrollY; 6521 doDrag(deltaX, deltaY); 6522 if (deltaX != 0) mLastDeferTouchX = x; 6523 if (deltaY != 0) mLastDeferTouchY = y; 6524 break; 6525 } 6526 case MotionEvent.ACTION_UP: 6527 case MotionEvent.ACTION_CANCEL: 6528 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6529 // no fling in defer process 6530 WebViewCore.resumePriority(); 6531 WebViewCore.resumeUpdatePicture(mWebViewCore); 6532 } 6533 mDeferTouchMode = TOUCH_DONE_MODE; 6534 break; 6535 case WebViewCore.ACTION_DOUBLETAP: 6536 // doDoubleTap() needs mLastTouchX/Y as anchor 6537 mLastTouchX = contentToViewX(ted.mX) - mScrollX; 6538 mLastTouchY = contentToViewY(ted.mY) - mScrollY; 6539 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6540 mDeferTouchMode = TOUCH_DONE_MODE; 6541 break; 6542 case WebViewCore.ACTION_LONGPRESS: 6543 HitTestResult hitTest = getHitTestResult(); 6544 if (hitTest != null && hitTest.mType 6545 != HitTestResult.UNKNOWN_TYPE) { 6546 performLongClick(); 6547 } 6548 mDeferTouchMode = TOUCH_DONE_MODE; 6549 break; 6550 } 6551 } 6552 break; 6553 6554 case REQUEST_KEYBOARD: 6555 if (msg.arg1 == 0) { 6556 hideSoftKeyboard(); 6557 } else { 6558 displaySoftKeyboard(false); 6559 } 6560 break; 6561 6562 case FIND_AGAIN: 6563 // Ignore if find has been dismissed. 6564 if (mFindIsUp) { 6565 findAll(mLastFind); 6566 } 6567 break; 6568 6569 case DRAG_HELD_MOTIONLESS: 6570 mHeldMotionless = MOTIONLESS_TRUE; 6571 invalidate(); 6572 // fall through to keep scrollbars awake 6573 6574 case AWAKEN_SCROLL_BARS: 6575 if (mTouchMode == TOUCH_DRAG_MODE 6576 && mHeldMotionless == MOTIONLESS_TRUE) { 6577 awakenScrollBars(ViewConfiguration 6578 .getScrollDefaultDelay(), false); 6579 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6580 .obtainMessage(AWAKEN_SCROLL_BARS), 6581 ViewConfiguration.getScrollDefaultDelay()); 6582 } 6583 break; 6584 6585 case DO_MOTION_UP: 6586 doMotionUp(msg.arg1, msg.arg2); 6587 break; 6588 6589 case SHOW_FULLSCREEN: { 6590 View view = (View) msg.obj; 6591 int npp = msg.arg1; 6592 6593 if (mFullScreenHolder != null) { 6594 Log.w(LOGTAG, "Should not have another full screen."); 6595 mFullScreenHolder.dismiss(); 6596 } 6597 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 6598 mFullScreenHolder.setContentView(view); 6599 mFullScreenHolder.setCancelable(false); 6600 mFullScreenHolder.setCanceledOnTouchOutside(false); 6601 mFullScreenHolder.show(); 6602 6603 break; 6604 } 6605 case HIDE_FULLSCREEN: 6606 if (inFullScreenMode()) { 6607 mFullScreenHolder.dismiss(); 6608 mFullScreenHolder = null; 6609 } 6610 break; 6611 6612 case DOM_FOCUS_CHANGED: 6613 if (inEditingMode()) { 6614 nativeClearCursor(); 6615 rebuildWebTextView(); 6616 } 6617 break; 6618 6619 case SHOW_RECT_MSG_ID: { 6620 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6621 int x = mScrollX; 6622 int left = contentToViewX(data.mLeft); 6623 int width = contentToViewDimension(data.mWidth); 6624 int maxWidth = contentToViewDimension(data.mContentWidth); 6625 int viewWidth = getViewWidth(); 6626 if (width < viewWidth) { 6627 // center align 6628 x += left + width / 2 - mScrollX - viewWidth / 2; 6629 } else { 6630 x += (int) (left + data.mXPercentInDoc * width 6631 - mScrollX - data.mXPercentInView * viewWidth); 6632 } 6633 if (DebugFlags.WEB_VIEW) { 6634 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6635 width + ",maxWidth=" + maxWidth + 6636 ",viewWidth=" + viewWidth + ",x=" 6637 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6638 ",xPercentInView=" + data.mXPercentInView+ ")"); 6639 } 6640 // use the passing content width to cap x as the current 6641 // mContentWidth may not be updated yet 6642 x = Math.max(0, 6643 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6644 int top = contentToViewY(data.mTop); 6645 int height = contentToViewDimension(data.mHeight); 6646 int maxHeight = contentToViewDimension(data.mContentHeight); 6647 int viewHeight = getViewHeight(); 6648 int y = (int) (top + data.mYPercentInDoc * height - 6649 data.mYPercentInView * viewHeight); 6650 if (DebugFlags.WEB_VIEW) { 6651 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6652 height + ",maxHeight=" + maxHeight + 6653 ",viewHeight=" + viewHeight + ",y=" 6654 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6655 ",yPercentInView=" + data.mYPercentInView+ ")"); 6656 } 6657 // use the passing content height to cap y as the current 6658 // mContentHeight may not be updated yet 6659 y = Math.max(0, 6660 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6661 // We need to take into account the visible title height 6662 // when scrolling since y is an absolute view position. 6663 y = Math.max(0, y - getVisibleTitleHeight()); 6664 scrollTo(x, y); 6665 } 6666 break; 6667 6668 case CENTER_FIT_RECT: 6669 Rect r = (Rect)msg.obj; 6670 centerFitRect(r.left, r.top, r.width(), r.height()); 6671 break; 6672 6673 case SET_SCROLLBAR_MODES: 6674 mHorizontalScrollBarMode = msg.arg1; 6675 mVerticalScrollBarMode = msg.arg2; 6676 break; 6677 6678 case SELECTION_STRING_CHANGED: 6679 if (mAccessibilityInjector != null) { 6680 String selectionString = (String) msg.obj; 6681 mAccessibilityInjector.onSelectionStringChange(selectionString); 6682 } 6683 break; 6684 6685 case SET_TOUCH_HIGHLIGHT_RECTS: 6686 invalidate(mTouchHighlightRegion.getBounds()); 6687 mTouchHighlightRegion.setEmpty(); 6688 if (msg.obj != null) { 6689 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 6690 for (Rect rect : rects) { 6691 Rect viewRect = contentToViewRect(rect); 6692 // some sites, like stories in nytimes.com, set 6693 // mouse event handler in the top div. It is not 6694 // user friendly to highlight the div if it covers 6695 // more than half of the screen. 6696 if (viewRect.width() < getWidth() >> 1 6697 || viewRect.height() < getHeight() >> 1) { 6698 mTouchHighlightRegion.union(viewRect); 6699 invalidate(viewRect); 6700 } else { 6701 Log.w(LOGTAG, "Skip the huge selection rect:" 6702 + viewRect); 6703 } 6704 } 6705 } 6706 break; 6707 6708 case SAVE_WEBARCHIVE_FINISHED: 6709 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 6710 if (saveMessage.mCallback != null) { 6711 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 6712 } 6713 break; 6714 6715 default: 6716 super.handleMessage(msg); 6717 break; 6718 } 6719 } 6720 } 6721 6722 /** 6723 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 6724 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 6725 */ 6726 private void updateTextSelectionFromMessage(int nodePointer, 6727 int textGeneration, WebViewCore.TextSelectionData data) { 6728 if (inEditingMode() 6729 && mWebTextView.isSameTextField(nodePointer) 6730 && textGeneration == mTextGeneration) { 6731 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 6732 } 6733 } 6734 6735 // Class used to use a dropdown for a <select> element 6736 private class InvokeListBox implements Runnable { 6737 // Whether the listbox allows multiple selection. 6738 private boolean mMultiple; 6739 // Passed in to a list with multiple selection to tell 6740 // which items are selected. 6741 private int[] mSelectedArray; 6742 // Passed in to a list with single selection to tell 6743 // where the initial selection is. 6744 private int mSelection; 6745 6746 private Container[] mContainers; 6747 6748 // Need these to provide stable ids to my ArrayAdapter, 6749 // which normally does not have stable ids. (Bug 1250098) 6750 private class Container extends Object { 6751 /** 6752 * Possible values for mEnabled. Keep in sync with OptionStatus in 6753 * WebViewCore.cpp 6754 */ 6755 final static int OPTGROUP = -1; 6756 final static int OPTION_DISABLED = 0; 6757 final static int OPTION_ENABLED = 1; 6758 6759 String mString; 6760 int mEnabled; 6761 int mId; 6762 6763 public String toString() { 6764 return mString; 6765 } 6766 } 6767 6768 /** 6769 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6770 * and allow filtering. 6771 */ 6772 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6773 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6774 super(context, 6775 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6776 com.android.internal.R.layout.select_dialog_singlechoice, 6777 objects); 6778 } 6779 6780 @Override 6781 public View getView(int position, View convertView, 6782 ViewGroup parent) { 6783 // Always pass in null so that we will get a new CheckedTextView 6784 // Otherwise, an item which was previously used as an <optgroup> 6785 // element (i.e. has no check), could get used as an <option> 6786 // element, which needs a checkbox/radio, but it would not have 6787 // one. 6788 convertView = super.getView(position, null, parent); 6789 Container c = item(position); 6790 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6791 // ListView does not draw dividers between disabled and 6792 // enabled elements. Use a LinearLayout to provide dividers 6793 LinearLayout layout = new LinearLayout(mContext); 6794 layout.setOrientation(LinearLayout.VERTICAL); 6795 if (position > 0) { 6796 View dividerTop = new View(mContext); 6797 dividerTop.setBackgroundResource( 6798 android.R.drawable.divider_horizontal_bright); 6799 layout.addView(dividerTop); 6800 } 6801 6802 if (Container.OPTGROUP == c.mEnabled) { 6803 // Currently select_dialog_multichoice and 6804 // select_dialog_singlechoice are CheckedTextViews. If 6805 // that changes, the class cast will no longer be valid. 6806 Assert.assertTrue( 6807 convertView instanceof CheckedTextView); 6808 ((CheckedTextView) convertView).setCheckMarkDrawable( 6809 null); 6810 } else { 6811 // c.mEnabled == Container.OPTION_DISABLED 6812 // Draw the disabled element in a disabled state. 6813 convertView.setEnabled(false); 6814 } 6815 6816 layout.addView(convertView); 6817 if (position < getCount() - 1) { 6818 View dividerBottom = new View(mContext); 6819 dividerBottom.setBackgroundResource( 6820 android.R.drawable.divider_horizontal_bright); 6821 layout.addView(dividerBottom); 6822 } 6823 return layout; 6824 } 6825 return convertView; 6826 } 6827 6828 @Override 6829 public boolean hasStableIds() { 6830 // AdapterView's onChanged method uses this to determine whether 6831 // to restore the old state. Return false so that the old (out 6832 // of date) state does not replace the new, valid state. 6833 return false; 6834 } 6835 6836 private Container item(int position) { 6837 if (position < 0 || position >= getCount()) { 6838 return null; 6839 } 6840 return (Container) getItem(position); 6841 } 6842 6843 @Override 6844 public long getItemId(int position) { 6845 Container item = item(position); 6846 if (item == null) { 6847 return -1; 6848 } 6849 return item.mId; 6850 } 6851 6852 @Override 6853 public boolean areAllItemsEnabled() { 6854 return false; 6855 } 6856 6857 @Override 6858 public boolean isEnabled(int position) { 6859 Container item = item(position); 6860 if (item == null) { 6861 return false; 6862 } 6863 return Container.OPTION_ENABLED == item.mEnabled; 6864 } 6865 } 6866 6867 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6868 mMultiple = true; 6869 mSelectedArray = selected; 6870 6871 int length = array.length; 6872 mContainers = new Container[length]; 6873 for (int i = 0; i < length; i++) { 6874 mContainers[i] = new Container(); 6875 mContainers[i].mString = array[i]; 6876 mContainers[i].mEnabled = enabled[i]; 6877 mContainers[i].mId = i; 6878 } 6879 } 6880 6881 private InvokeListBox(String[] array, int[] enabled, int selection) { 6882 mSelection = selection; 6883 mMultiple = false; 6884 6885 int length = array.length; 6886 mContainers = new Container[length]; 6887 for (int i = 0; i < length; i++) { 6888 mContainers[i] = new Container(); 6889 mContainers[i].mString = array[i]; 6890 mContainers[i].mEnabled = enabled[i]; 6891 mContainers[i].mId = i; 6892 } 6893 } 6894 6895 /* 6896 * Whenever the data set changes due to filtering, this class ensures 6897 * that the checked item remains checked. 6898 */ 6899 private class SingleDataSetObserver extends DataSetObserver { 6900 private long mCheckedId; 6901 private ListView mListView; 6902 private Adapter mAdapter; 6903 6904 /* 6905 * Create a new observer. 6906 * @param id The ID of the item to keep checked. 6907 * @param l ListView for getting and clearing the checked states 6908 * @param a Adapter for getting the IDs 6909 */ 6910 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6911 mCheckedId = id; 6912 mListView = l; 6913 mAdapter = a; 6914 } 6915 6916 public void onChanged() { 6917 // The filter may have changed which item is checked. Find the 6918 // item that the ListView thinks is checked. 6919 int position = mListView.getCheckedItemPosition(); 6920 long id = mAdapter.getItemId(position); 6921 if (mCheckedId != id) { 6922 // Clear the ListView's idea of the checked item, since 6923 // it is incorrect 6924 mListView.clearChoices(); 6925 // Search for mCheckedId. If it is in the filtered list, 6926 // mark it as checked 6927 int count = mAdapter.getCount(); 6928 for (int i = 0; i < count; i++) { 6929 if (mAdapter.getItemId(i) == mCheckedId) { 6930 mListView.setItemChecked(i, true); 6931 break; 6932 } 6933 } 6934 } 6935 } 6936 6937 public void onInvalidate() {} 6938 } 6939 6940 public void run() { 6941 final ListView listView = (ListView) LayoutInflater.from(mContext) 6942 .inflate(com.android.internal.R.layout.select_dialog, null); 6943 final MyArrayListAdapter adapter = new 6944 MyArrayListAdapter(mContext, mContainers, mMultiple); 6945 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6946 .setView(listView).setCancelable(true) 6947 .setInverseBackgroundForced(true); 6948 6949 if (mMultiple) { 6950 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6951 public void onClick(DialogInterface dialog, int which) { 6952 mWebViewCore.sendMessage( 6953 EventHub.LISTBOX_CHOICES, 6954 adapter.getCount(), 0, 6955 listView.getCheckedItemPositions()); 6956 }}); 6957 b.setNegativeButton(android.R.string.cancel, 6958 new DialogInterface.OnClickListener() { 6959 public void onClick(DialogInterface dialog, int which) { 6960 mWebViewCore.sendMessage( 6961 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6962 }}); 6963 } 6964 final AlertDialog dialog = b.create(); 6965 listView.setAdapter(adapter); 6966 listView.setFocusableInTouchMode(true); 6967 // There is a bug (1250103) where the checks in a ListView with 6968 // multiple items selected are associated with the positions, not 6969 // the ids, so the items do not properly retain their checks when 6970 // filtered. Do not allow filtering on multiple lists until 6971 // that bug is fixed. 6972 6973 listView.setTextFilterEnabled(!mMultiple); 6974 if (mMultiple) { 6975 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6976 int length = mSelectedArray.length; 6977 for (int i = 0; i < length; i++) { 6978 listView.setItemChecked(mSelectedArray[i], true); 6979 } 6980 } else { 6981 listView.setOnItemClickListener(new OnItemClickListener() { 6982 public void onItemClick(AdapterView parent, View v, 6983 int position, long id) { 6984 mWebViewCore.sendMessage( 6985 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6986 dialog.dismiss(); 6987 } 6988 }); 6989 if (mSelection != -1) { 6990 listView.setSelection(mSelection); 6991 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6992 listView.setItemChecked(mSelection, true); 6993 DataSetObserver observer = new SingleDataSetObserver( 6994 adapter.getItemId(mSelection), listView, adapter); 6995 adapter.registerDataSetObserver(observer); 6996 } 6997 } 6998 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6999 public void onCancel(DialogInterface dialog) { 7000 mWebViewCore.sendMessage( 7001 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7002 } 7003 }); 7004 dialog.show(); 7005 } 7006 } 7007 7008 /* 7009 * Request a dropdown menu for a listbox with multiple selection. 7010 * 7011 * @param array Labels for the listbox. 7012 * @param enabledArray State for each element in the list. See static 7013 * integers in Container class. 7014 * @param selectedArray Which positions are initally selected. 7015 */ 7016 void requestListBox(String[] array, int[] enabledArray, int[] 7017 selectedArray) { 7018 mPrivateHandler.post( 7019 new InvokeListBox(array, enabledArray, selectedArray)); 7020 } 7021 7022 /* 7023 * Request a dropdown menu for a listbox with single selection or a single 7024 * <select> element. 7025 * 7026 * @param array Labels for the listbox. 7027 * @param enabledArray State for each element in the list. See static 7028 * integers in Container class. 7029 * @param selection Which position is initally selected. 7030 */ 7031 void requestListBox(String[] array, int[] enabledArray, int selection) { 7032 mPrivateHandler.post( 7033 new InvokeListBox(array, enabledArray, selection)); 7034 } 7035 7036 // called by JNI 7037 private void sendMoveFocus(int frame, int node) { 7038 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7039 new WebViewCore.CursorData(frame, node, 0, 0)); 7040 } 7041 7042 // called by JNI 7043 private void sendMoveMouse(int frame, int node, int x, int y) { 7044 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7045 new WebViewCore.CursorData(frame, node, x, y)); 7046 } 7047 7048 /* 7049 * Send a mouse move event to the webcore thread. 7050 * 7051 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7052 * which wants key events, but it is not the focus. This 7053 * will make the visual appear as though nothing is in 7054 * focus. Remove the WebTextView, if present, and stop 7055 * drawing the blinking caret. 7056 * called by JNI 7057 */ 7058 private void sendMoveMouseIfLatest(boolean removeFocus) { 7059 if (removeFocus) { 7060 clearTextEntry(); 7061 } 7062 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7063 cursorData()); 7064 } 7065 7066 // called by JNI 7067 private void sendMotionUp(int touchGeneration, 7068 int frame, int node, int x, int y) { 7069 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7070 touchUpData.mMoveGeneration = touchGeneration; 7071 touchUpData.mFrame = frame; 7072 touchUpData.mNode = node; 7073 touchUpData.mX = x; 7074 touchUpData.mY = y; 7075 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7076 } 7077 7078 7079 private int getScaledMaxXScroll() { 7080 int width; 7081 if (mHeightCanMeasure == false) { 7082 width = getViewWidth() / 4; 7083 } else { 7084 Rect visRect = new Rect(); 7085 calcOurVisibleRect(visRect); 7086 width = visRect.width() / 2; 7087 } 7088 // FIXME the divisor should be retrieved from somewhere 7089 return viewToContentX(width); 7090 } 7091 7092 private int getScaledMaxYScroll() { 7093 int height; 7094 if (mHeightCanMeasure == false) { 7095 height = getViewHeight() / 4; 7096 } else { 7097 Rect visRect = new Rect(); 7098 calcOurVisibleRect(visRect); 7099 height = visRect.height() / 2; 7100 } 7101 // FIXME the divisor should be retrieved from somewhere 7102 // the closest thing today is hard-coded into ScrollView.java 7103 // (from ScrollView.java, line 363) int maxJump = height/2; 7104 return Math.round(height * mZoomManager.getInvScale()); 7105 } 7106 7107 /** 7108 * Called by JNI to invalidate view 7109 */ 7110 private void viewInvalidate() { 7111 invalidate(); 7112 } 7113 7114 /** 7115 * Pass the key directly to the page. This assumes that 7116 * nativePageShouldHandleShiftAndArrows() returned true. 7117 */ 7118 private void letPageHandleNavKey(int keyCode, long time, boolean down) { 7119 int keyEventAction; 7120 int eventHubAction; 7121 if (down) { 7122 keyEventAction = KeyEvent.ACTION_DOWN; 7123 eventHubAction = EventHub.KEY_DOWN; 7124 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7125 } else { 7126 keyEventAction = KeyEvent.ACTION_UP; 7127 eventHubAction = EventHub.KEY_UP; 7128 } 7129 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7130 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7131 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7132 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7133 , 0, 0, 0); 7134 mWebViewCore.sendMessage(eventHubAction, event); 7135 } 7136 7137 // return true if the key was handled 7138 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7139 long time) { 7140 if (mNativeClass == 0) { 7141 return false; 7142 } 7143 mLastCursorTime = time; 7144 mLastCursorBounds = nativeGetCursorRingBounds(); 7145 boolean keyHandled 7146 = nativeMoveCursor(keyCode, count, noScroll) == false; 7147 if (DebugFlags.WEB_VIEW) { 7148 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7149 + " mLastCursorTime=" + mLastCursorTime 7150 + " handled=" + keyHandled); 7151 } 7152 if (keyHandled == false || mHeightCanMeasure == false) { 7153 return keyHandled; 7154 } 7155 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7156 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7157 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7158 Rect visRect = new Rect(); 7159 calcOurVisibleRect(visRect); 7160 Rect outset = new Rect(visRect); 7161 int maxXScroll = visRect.width() / 2; 7162 int maxYScroll = visRect.height() / 2; 7163 outset.inset(-maxXScroll, -maxYScroll); 7164 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7165 return keyHandled; 7166 } 7167 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7168 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7169 maxXScroll); 7170 if (maxH > 0) { 7171 pinScrollBy(maxH, 0, true, 0); 7172 } else { 7173 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7174 -maxXScroll); 7175 if (maxH < 0) { 7176 pinScrollBy(maxH, 0, true, 0); 7177 } 7178 } 7179 if (mLastCursorBounds.isEmpty()) return keyHandled; 7180 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7181 return keyHandled; 7182 } 7183 if (DebugFlags.WEB_VIEW) { 7184 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7185 + contentCursorRingBounds); 7186 } 7187 requestRectangleOnScreen(viewCursorRingBounds); 7188 mUserScroll = true; 7189 return keyHandled; 7190 } 7191 7192 /** 7193 * Set the background color. It's white by default. Pass 7194 * zero to make the view transparent. 7195 * @param color the ARGB color described by Color.java 7196 */ 7197 public void setBackgroundColor(int color) { 7198 mBackgroundColor = color; 7199 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7200 } 7201 7202 public void debugDump() { 7203 nativeDebugDump(); 7204 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7205 } 7206 7207 /** 7208 * Draw the HTML page into the specified canvas. This call ignores any 7209 * view-specific zoom, scroll offset, or other changes. It does not draw 7210 * any view-specific chrome, such as progress or URL bars. 7211 * 7212 * @hide only needs to be accessible to Browser and testing 7213 */ 7214 public void drawPage(Canvas canvas) { 7215 nativeDraw(canvas, 0, 0, false); 7216 } 7217 7218 /** 7219 * Set the time to wait between passing touches to WebCore. See also the 7220 * TOUCH_SENT_INTERVAL member for further discussion. 7221 * 7222 * @hide This is only used by the DRT test application. 7223 */ 7224 public void setTouchInterval(int interval) { 7225 mCurrentTouchInterval = interval; 7226 } 7227 7228 /** 7229 * Update our cache with updatedText. 7230 * @param updatedText The new text to put in our cache. 7231 */ 7232 /* package */ void updateCachedTextfield(String updatedText) { 7233 // Also place our generation number so that when we look at the cache 7234 // we recognize that it is up to date. 7235 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7236 } 7237 7238 private native int nativeCacheHitFramePointer(); 7239 private native Rect nativeCacheHitNodeBounds(); 7240 private native int nativeCacheHitNodePointer(); 7241 /* package */ native void nativeClearCursor(); 7242 private native void nativeCreate(int ptr); 7243 private native int nativeCursorFramePointer(); 7244 private native Rect nativeCursorNodeBounds(); 7245 private native int nativeCursorNodePointer(); 7246 /* package */ native boolean nativeCursorMatchesFocus(); 7247 private native boolean nativeCursorIntersects(Rect visibleRect); 7248 private native boolean nativeCursorIsAnchor(); 7249 private native boolean nativeCursorIsTextInput(); 7250 private native Point nativeCursorPosition(); 7251 private native String nativeCursorText(); 7252 /** 7253 * Returns true if the native cursor node says it wants to handle key events 7254 * (ala plugins). This can only be called if mNativeClass is non-zero! 7255 */ 7256 private native boolean nativeCursorWantsKeyEvents(); 7257 private native void nativeDebugDump(); 7258 private native void nativeDestroy(); 7259 7260 /** 7261 * Draw the picture set with a background color and extra. If 7262 * "splitIfNeeded" is true and the return value is not 0, the return value 7263 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 7264 * native allocation can be freed. 7265 */ 7266 private native int nativeDraw(Canvas canvas, int color, int extra, 7267 boolean splitIfNeeded); 7268 private native void nativeDumpDisplayTree(String urlOrNull); 7269 private native boolean nativeEvaluateLayersAnimations(); 7270 private native void nativeExtendSelection(int x, int y); 7271 private native int nativeFindAll(String findLower, String findUpper); 7272 private native void nativeFindNext(boolean forward); 7273 /* package */ native int nativeFocusCandidateFramePointer(); 7274 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7275 /* package */ native boolean nativeFocusCandidateIsPassword(); 7276 private native boolean nativeFocusCandidateIsRtlText(); 7277 private native boolean nativeFocusCandidateIsTextInput(); 7278 /* package */ native int nativeFocusCandidateMaxLength(); 7279 /* package */ native String nativeFocusCandidateName(); 7280 private native Rect nativeFocusCandidateNodeBounds(); 7281 /* package */ native int nativeFocusCandidatePointer(); 7282 private native String nativeFocusCandidateText(); 7283 private native int nativeFocusCandidateTextSize(); 7284 /** 7285 * Returns an integer corresponding to WebView.cpp::type. 7286 * See WebTextView.setType() 7287 */ 7288 private native int nativeFocusCandidateType(); 7289 private native boolean nativeFocusIsPlugin(); 7290 private native Rect nativeFocusNodeBounds(); 7291 /* package */ native int nativeFocusNodePointer(); 7292 private native Rect nativeGetCursorRingBounds(); 7293 private native String nativeGetSelection(); 7294 private native boolean nativeHasCursorNode(); 7295 private native boolean nativeHasFocusNode(); 7296 private native void nativeHideCursor(); 7297 private native boolean nativeHitSelection(int x, int y); 7298 private native String nativeImageURI(int x, int y); 7299 private native void nativeInstrumentReport(); 7300 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7301 // return true if the page has been scrolled 7302 private native boolean nativeMotionUp(int x, int y, int slop); 7303 // returns false if it handled the key 7304 private native boolean nativeMoveCursor(int keyCode, int count, 7305 boolean noScroll); 7306 private native int nativeMoveGeneration(); 7307 private native void nativeMoveSelection(int x, int y); 7308 /** 7309 * @return true if the page should get the shift and arrow keys, rather 7310 * than select text/navigation. 7311 * 7312 * If the focus is a plugin, or if the focus and cursor match and are 7313 * a contentEditable element, then the page should handle these keys. 7314 */ 7315 private native boolean nativePageShouldHandleShiftAndArrows(); 7316 private native boolean nativePointInNavCache(int x, int y, int slop); 7317 // Like many other of our native methods, you must make sure that 7318 // mNativeClass is not null before calling this method. 7319 private native void nativeRecordButtons(boolean focused, 7320 boolean pressed, boolean invalidate); 7321 private native void nativeResetSelection(); 7322 private native void nativeSelectAll(); 7323 private native void nativeSelectBestAt(Rect rect); 7324 private native int nativeSelectionX(); 7325 private native int nativeSelectionY(); 7326 private native int nativeFindIndex(); 7327 private native void nativeSetExtendSelection(); 7328 private native void nativeSetFindIsEmpty(); 7329 private native void nativeSetFindIsUp(boolean isUp); 7330 private native void nativeSetFollowedLink(boolean followed); 7331 private native void nativeSetHeightCanMeasure(boolean measure); 7332 private native void nativeSetBaseLayer(int layer); 7333 private native void nativeReplaceBaseContent(int content); 7334 private native void nativeCopyBaseContentToPicture(Picture pict); 7335 private native boolean nativeHasContent(); 7336 private native void nativeSetSelectionPointer(boolean set, 7337 float scale, int x, int y); 7338 private native boolean nativeStartSelection(int x, int y); 7339 private native Rect nativeSubtractLayers(Rect content); 7340 private native int nativeTextGeneration(); 7341 // Never call this version except by updateCachedTextfield(String) - 7342 // we always want to pass in our generation number. 7343 private native void nativeUpdateCachedTextfield(String updatedText, 7344 int generation); 7345 private native boolean nativeWordSelection(int x, int y); 7346 // return NO_LEFTEDGE means failure. 7347 static final int NO_LEFTEDGE = -1; 7348 native int nativeGetBlockLeftEdge(int x, int y, float scale); 7349 7350 // Returns a pointer to the scrollable LayerAndroid at the given point. 7351 private native int nativeScrollableLayer(int x, int y); 7352 private native boolean nativeScrollLayer(int layer, int dx, int dy); 7353} 7354