WebView.java revision 2cdee233125a6cc4b00a2962d5a50273d6bb5410
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 com.android.internal.R; 20 21import android.annotation.Widget; 22import android.app.AlertDialog; 23import android.content.BroadcastReceiver; 24import android.content.ClipboardManager; 25import android.content.Context; 26import android.content.DialogInterface; 27import android.content.DialogInterface.OnCancelListener; 28import android.content.Intent; 29import android.content.IntentFilter; 30import android.content.pm.PackageInfo; 31import android.content.pm.PackageManager; 32import android.content.res.Configuration; 33import android.content.res.Resources; 34import android.database.DataSetObserver; 35import android.graphics.Bitmap; 36import android.graphics.BitmapFactory; 37import android.graphics.BitmapShader; 38import android.graphics.Canvas; 39import android.graphics.Color; 40import android.graphics.CornerPathEffect; 41import android.graphics.DrawFilter; 42import android.graphics.Paint; 43import android.graphics.PaintFlagsDrawFilter; 44import android.graphics.Picture; 45import android.graphics.Point; 46import android.graphics.Rect; 47import android.graphics.RectF; 48import android.graphics.Region; 49import android.graphics.Shader; 50import android.graphics.drawable.Drawable; 51import android.net.Proxy; 52import android.net.ProxyProperties; 53import android.net.Uri; 54import android.net.http.SslCertificate; 55import android.os.AsyncTask; 56import android.os.Bundle; 57import android.os.Handler; 58import android.os.Message; 59import android.provider.Settings; 60import android.speech.tts.TextToSpeech; 61import android.text.Selection; 62import android.text.Spannable; 63import android.util.AttributeSet; 64import android.util.EventLog; 65import android.util.Log; 66import android.view.Gravity; 67import android.view.KeyCharacterMap; 68import android.view.KeyEvent; 69import android.view.LayoutInflater; 70import android.view.MotionEvent; 71import android.view.ScaleGestureDetector; 72import android.view.SoundEffectConstants; 73import android.view.VelocityTracker; 74import android.view.View; 75import android.view.ViewConfiguration; 76import android.view.ViewGroup; 77import android.view.ViewParent; 78import android.view.ViewTreeObserver; 79import android.view.accessibility.AccessibilityManager; 80import android.view.inputmethod.EditorInfo; 81import android.view.inputmethod.InputConnection; 82import android.view.inputmethod.InputMethodManager; 83import android.webkit.WebTextView.AutoCompleteAdapter; 84import android.webkit.WebViewCore.EventHub; 85import android.webkit.WebViewCore.TouchEventData; 86import android.webkit.WebViewCore.TouchHighlightData; 87import android.widget.AbsoluteLayout; 88import android.widget.Adapter; 89import android.widget.AdapterView; 90import android.widget.AdapterView.OnItemClickListener; 91import android.widget.ArrayAdapter; 92import android.widget.CheckedTextView; 93import android.widget.EdgeGlow; 94import android.widget.LinearLayout; 95import android.widget.ListView; 96import android.widget.OverScroller; 97import android.widget.Toast; 98 99import java.io.File; 100import java.io.FileInputStream; 101import java.io.FileNotFoundException; 102import java.io.FileOutputStream; 103import java.net.URLDecoder; 104import java.util.ArrayList; 105import java.util.HashMap; 106import java.util.HashSet; 107import java.util.List; 108import java.util.Map; 109import java.util.Set; 110import java.util.regex.Matcher; 111import java.util.regex.Pattern; 112 113import junit.framework.Assert; 114 115/** 116 * <p>A View that displays web pages. This class is the basis upon which you 117 * can roll your own web browser or simply display some online content within your Activity. 118 * It uses the WebKit rendering engine to display 119 * web pages and includes methods to navigate forward and backward 120 * through a history, zoom in and out, perform text searches and more.</p> 121 * <p>To enable the built-in zoom, set 122 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 123 * (introduced in API version 3). 124 * <p>Note that, in order for your Activity to access the Internet and load web pages 125 * in a WebView, you must add the {@code INTERNET} permissions to your 126 * Android Manifest file:</p> 127 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 128 * 129 * <p>This must be a child of the <a 130 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 131 * element.</p> 132 * 133 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 134 * tutorial</a>.</p> 135 * 136 * <h3>Basic usage</h3> 137 * 138 * <p>By default, a WebView provides no browser-like widgets, does not 139 * enable JavaScript and web page errors are ignored. If your goal is only 140 * to display some HTML as a part of your UI, this is probably fine; 141 * the user won't need to interact with the web page beyond reading 142 * it, and the web page won't need to interact with the user. If you 143 * actually want a full-blown web browser, then you probably want to 144 * invoke the Browser application with a URL Intent rather than show it 145 * with a WebView. For example: 146 * <pre> 147 * Uri uri = Uri.parse("http://www.example.com"); 148 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 149 * startActivity(intent); 150 * </pre> 151 * <p>See {@link android.content.Intent} for more information.</p> 152 * 153 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 154 * or set the entire Activity window as a WebView during {@link 155 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 156 * <pre class="prettyprint"> 157 * WebView webview = new WebView(this); 158 * setContentView(webview); 159 * </pre> 160 * 161 * <p>Then load the desired web page:</p> 162 * <pre> 163 * // Simplest usage: note that an exception will NOT be thrown 164 * // if there is an error loading this page (see below). 165 * webview.loadUrl("http://slashdot.org/"); 166 * 167 * // OR, you can also load from an HTML string: 168 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 169 * webview.loadData(summary, "text/html", "utf-8"); 170 * // ... although note that there are restrictions on what this HTML can do. 171 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 172 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 173 * </pre> 174 * 175 * <p>A WebView has several customization points where you can add your 176 * own behavior. These are:</p> 177 * 178 * <ul> 179 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 180 * This class is called when something that might impact a 181 * browser UI happens, for instance, progress updates and 182 * JavaScript alerts are sent here (see <a 183 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 184 * </li> 185 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 186 * It will be called when things happen that impact the 187 * rendering of the content, eg, errors or form submissions. You 188 * can also intercept URL loading here (via {@link 189 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 190 * shouldOverrideUrlLoading()}).</li> 191 * <li>Modifying the {@link android.webkit.WebSettings}, such as 192 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 193 * setJavaScriptEnabled()}. </li> 194 * <li>Adding JavaScript-to-Java interfaces with the {@link 195 * android.webkit.WebView#addJavascriptInterface} method. 196 * This lets you bind Java objects into the WebView so they can be 197 * controlled from the web pages JavaScript.</li> 198 * </ul> 199 * 200 * <p>Here's a more complicated example, showing error handling, 201 * settings, and progress notification:</p> 202 * 203 * <pre class="prettyprint"> 204 * // Let's display the progress in the activity title bar, like the 205 * // browser app does. 206 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 207 * 208 * webview.getSettings().setJavaScriptEnabled(true); 209 * 210 * final Activity activity = this; 211 * webview.setWebChromeClient(new WebChromeClient() { 212 * public void onProgressChanged(WebView view, int progress) { 213 * // Activities and WebViews measure progress with different scales. 214 * // The progress meter will automatically disappear when we reach 100% 215 * activity.setProgress(progress * 1000); 216 * } 217 * }); 218 * webview.setWebViewClient(new WebViewClient() { 219 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 220 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 221 * } 222 * }); 223 * 224 * webview.loadUrl("http://slashdot.org/"); 225 * </pre> 226 * 227 * <h3>Cookie and window management</h3> 228 * 229 * <p>For obvious security reasons, your application has its own 230 * cache, cookie store etc.—it does not share the Browser 231 * application's data. Cookies are managed on a separate thread, so 232 * operations like index building don't block the UI 233 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 234 * if you want to use cookies in your application. 235 * </p> 236 * 237 * <p>By default, requests by the HTML to open new windows are 238 * ignored. This is true whether they be opened by JavaScript or by 239 * the target attribute on a link. You can customize your 240 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 241 * and render them in whatever manner you want.</p> 242 * 243 * <p>The standard behavior for an Activity is to be destroyed and 244 * recreated when the device orientation or any other configuration changes. This will cause 245 * the WebView to reload the current page. If you don't want that, you 246 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 247 * changes, and then just leave the WebView alone. It'll automatically 248 * re-orient itself as appropriate. Read <a 249 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 250 * more information about how to handle configuration changes during runtime.</p> 251 * 252 * 253 * <h3>Building web pages to support different screen densities</h3> 254 * 255 * <p>The screen density of a device is based on the screen resolution. A screen with low density 256 * has fewer available pixels per inch, where a screen with high density 257 * has more — sometimes significantly more — pixels per inch. The density of a 258 * screen is important because, other things being equal, a UI element (such as a button) whose 259 * height and width are defined in terms of screen pixels will appear larger on the lower density 260 * screen and smaller on the higher density screen. 261 * For simplicity, Android collapses all actual screen densities into three generalized densities: 262 * high, medium, and low.</p> 263 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 264 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 265 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 266 * are bigger). 267 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 268 * you (as a web developer) target screens with different screen densities.</p> 269 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 270 * <ul> 271 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 272 * default scaling factor used for the current device. For example, if the value of {@code 273 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 274 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 275 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 276 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 277 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 278 * (discussed below), then you can stop this default scaling behavior.</li> 279 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 280 * densities for which this style sheet is to be used. The corresponding value should be either 281 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 282 * density, or high density screens, respectively. For example: 283 * <pre> 284 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 285 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 286 * which is the high density pixel ratio.</p> 287 * </li> 288 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 289 * this to specify the target density for which the web page is designed, using the following 290 * values: 291 * <ul> 292 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 293 * occurs.</li> 294 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 295 * as appropriate.</li> 296 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 297 * low density screens scale down. This is also the default behavior.</li> 298 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 299 * as appropriate.</li> 300 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 301 * values are 70-400).</li> 302 * </ul> 303 * <p>Here's an example meta tag to specify the target density:</p> 304 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 305 * </ul> 306 * <p>If you want to modify your web page for different densities, by using the {@code 307 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 308 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 309 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 310 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 311 * 312 * 313 */ 314@Widget 315public class WebView extends AbsoluteLayout 316 implements ViewTreeObserver.OnGlobalFocusChangeListener, 317 ViewGroup.OnHierarchyChangeListener { 318 319 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 320 public void onGlobalLayout() { 321 if (isShown()) { 322 setGLRectViewport(); 323 } 324 } 325 } 326 327 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 328 public void onScrollChanged() { 329 if (isShown()) { 330 setGLRectViewport(); 331 } 332 } 333 } 334 335 // The listener to capture global layout change event. 336 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 337 338 // The listener to capture scroll event. 339 private InnerScrollChangedListener mScrollChangedListener = null; 340 341 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 342 // the screen all-the-time. Good for profiling our drawing code 343 static private final boolean AUTO_REDRAW_HACK = false; 344 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 345 private boolean mAutoRedraw; 346 347 // Reference to the AlertDialog displayed by InvokeListBox. 348 // It's used to dismiss the dialog in destroy if not done before. 349 private AlertDialog mListBoxDialog = null; 350 351 static final String LOGTAG = "webview"; 352 353 private ZoomManager mZoomManager; 354 355 private Rect mGLRectViewport; 356 357 /** 358 * Transportation object for returning WebView across thread boundaries. 359 */ 360 public class WebViewTransport { 361 private WebView mWebview; 362 363 /** 364 * Set the WebView to the transportation object. 365 * @param webview The WebView to transport. 366 */ 367 public synchronized void setWebView(WebView webview) { 368 mWebview = webview; 369 } 370 371 /** 372 * Return the WebView object. 373 * @return WebView The transported WebView object. 374 */ 375 public synchronized WebView getWebView() { 376 return mWebview; 377 } 378 } 379 380 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 381 private final CallbackProxy mCallbackProxy; 382 383 private final WebViewDatabase mDatabase; 384 385 // SSL certificate for the main top-level page (if secure) 386 private SslCertificate mCertificate; 387 388 // Native WebView pointer that is 0 until the native object has been 389 // created. 390 private int mNativeClass; 391 // This would be final but it needs to be set to null when the WebView is 392 // destroyed. 393 private WebViewCore mWebViewCore; 394 // Handler for dispatching UI messages. 395 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 396 private WebTextView mWebTextView; 397 // Used to ignore changes to webkit text that arrives to the UI side after 398 // more key events. 399 private int mTextGeneration; 400 401 /* package */ void incrementTextGeneration() { mTextGeneration++; } 402 403 // Used by WebViewCore to create child views. 404 /* package */ final ViewManager mViewManager; 405 406 // Used to display in full screen mode 407 PluginFullScreenHolder mFullScreenHolder; 408 409 /** 410 * Position of the last touch event. 411 */ 412 private float mLastTouchX; 413 private float mLastTouchY; 414 415 /** 416 * Time of the last touch event. 417 */ 418 private long mLastTouchTime; 419 420 /** 421 * Time of the last time sending touch event to WebViewCore 422 */ 423 private long mLastSentTouchTime; 424 425 /** 426 * The minimum elapsed time before sending another ACTION_MOVE event to 427 * WebViewCore. This really should be tuned for each type of the devices. 428 * For example in Google Map api test case, it takes Dream device at least 429 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 430 * triggering the layout and drawing the picture. While the same process 431 * takes 60+ms on the current high speed device. If we make 432 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 433 * to WebViewCore queue and the real layout and draw events will be pushed 434 * to further, which slows down the refresh rate. Choose 50 to favor the 435 * current high speed devices. For Dream like devices, 100 is a better 436 * choice. Maybe make this in the buildspec later. 437 * (Update 12/14/2010: changed to 0 since current device should be able to 438 * handle the raw events and Map team voted to have the raw events too. 439 */ 440 private static final int TOUCH_SENT_INTERVAL = 0; 441 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 442 443 /** 444 * Helper class to get velocity for fling 445 */ 446 VelocityTracker mVelocityTracker; 447 private int mMaximumFling; 448 private float mLastVelocity; 449 private float mLastVelX; 450 private float mLastVelY; 451 452 // The id of the native layer being scrolled. 453 private int mScrollingLayer; 454 private Rect mScrollingLayerRect = new Rect(); 455 456 // only trigger accelerated fling if the new velocity is at least 457 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 458 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 459 460 /** 461 * Touch mode 462 */ 463 private int mTouchMode = TOUCH_DONE_MODE; 464 private static final int TOUCH_INIT_MODE = 1; 465 private static final int TOUCH_DRAG_START_MODE = 2; 466 private static final int TOUCH_DRAG_MODE = 3; 467 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 468 private static final int TOUCH_SHORTPRESS_MODE = 5; 469 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 470 private static final int TOUCH_DONE_MODE = 7; 471 private static final int TOUCH_PINCH_DRAG = 8; 472 private static final int TOUCH_DRAG_LAYER_MODE = 9; 473 474 // Whether to forward the touch events to WebCore 475 private boolean mForwardTouchEvents = false; 476 477 // Whether to prevent default during touch. The initial value depends on 478 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 479 // for touch down. Otherwise UI will wait for the answer of the first 480 // confirmed move before taking over the control. 481 private static final int PREVENT_DEFAULT_NO = 0; 482 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 483 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 484 private static final int PREVENT_DEFAULT_YES = 3; 485 private static final int PREVENT_DEFAULT_IGNORE = 4; 486 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 487 488 // true when the touch movement exceeds the slop 489 private boolean mConfirmMove; 490 491 // if true, touch events will be first processed by WebCore, if prevent 492 // default is not set, the UI will continue handle them. 493 private boolean mDeferTouchProcess; 494 495 // if true, multi-touch events will be passed to webkit directly before UI 496 private boolean mDeferMultitouch = false; 497 498 // to avoid interfering with the current touch events, track them 499 // separately. Currently no snapping or fling in the deferred process mode 500 private int mDeferTouchMode = TOUCH_DONE_MODE; 501 private float mLastDeferTouchX; 502 private float mLastDeferTouchY; 503 504 // To keep track of whether the current drag was initiated by a WebTextView, 505 // so that we know not to hide the cursor 506 boolean mDragFromTextInput; 507 508 // Whether or not to draw the cursor ring. 509 private boolean mDrawCursorRing = true; 510 511 // true if onPause has been called (and not onResume) 512 private boolean mIsPaused; 513 514 private HitTestResult mInitialHitTestResult; 515 516 /** 517 * Customizable constant 518 */ 519 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 520 private int mTouchSlopSquare; 521 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 522 private int mDoubleTapSlopSquare; 523 // pre-computed density adjusted navigation slop 524 private int mNavSlop; 525 // This should be ViewConfiguration.getTapTimeout() 526 // But system time out is 100ms, which is too short for the browser. 527 // In the browser, if it switches out of tap too soon, jump tap won't work. 528 private static final int TAP_TIMEOUT = 200; 529 // This should be ViewConfiguration.getLongPressTimeout() 530 // But system time out is 500ms, which is too short for the browser. 531 // With a short timeout, it's difficult to treat trigger a short press. 532 private static final int LONG_PRESS_TIMEOUT = 1000; 533 // needed to avoid flinging after a pause of no movement 534 private static final int MIN_FLING_TIME = 250; 535 // draw unfiltered after drag is held without movement 536 private static final int MOTIONLESS_TIME = 100; 537 // The amount of content to overlap between two screens when going through 538 // pages with the space bar, in pixels. 539 private static final int PAGE_SCROLL_OVERLAP = 24; 540 541 /** 542 * These prevent calling requestLayout if either dimension is fixed. This 543 * depends on the layout parameters and the measure specs. 544 */ 545 boolean mWidthCanMeasure; 546 boolean mHeightCanMeasure; 547 548 // Remember the last dimensions we sent to the native side so we can avoid 549 // sending the same dimensions more than once. 550 int mLastWidthSent; 551 int mLastHeightSent; 552 553 private int mContentWidth; // cache of value from WebViewCore 554 private int mContentHeight; // cache of value from WebViewCore 555 556 // Need to have the separate control for horizontal and vertical scrollbar 557 // style than the View's single scrollbar style 558 private boolean mOverlayHorizontalScrollbar = true; 559 private boolean mOverlayVerticalScrollbar = false; 560 561 // our standard speed. this way small distances will be traversed in less 562 // time than large distances, but we cap the duration, so that very large 563 // distances won't take too long to get there. 564 private static final int STD_SPEED = 480; // pixels per second 565 // time for the longest scroll animation 566 private static final int MAX_DURATION = 750; // milliseconds 567 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 568 569 // Used by OverScrollGlow 570 OverScroller mScroller; 571 572 private boolean mInOverScrollMode = false; 573 private static Paint mOverScrollBackground; 574 private static Paint mOverScrollBorder; 575 576 private boolean mWrapContent; 577 private static final int MOTIONLESS_FALSE = 0; 578 private static final int MOTIONLESS_PENDING = 1; 579 private static final int MOTIONLESS_TRUE = 2; 580 private static final int MOTIONLESS_IGNORE = 3; 581 private int mHeldMotionless; 582 583 // An instance for injecting accessibility in WebViews with disabled 584 // JavaScript or ones for which no accessibility script exists 585 private AccessibilityInjector mAccessibilityInjector; 586 587 // flag indicating if accessibility script is injected so we 588 // know to handle Shift and arrows natively first 589 private boolean mAccessibilityScriptInjected; 590 591 // the color used to highlight the touch rectangles 592 private static final int mHightlightColor = 0x33000000; 593 // the round corner for the highlight path 594 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 595 // the region indicating where the user touched on the screen 596 private Region mTouchHighlightRegion = new Region(); 597 // the paint for the touch highlight 598 private Paint mTouchHightlightPaint; 599 // debug only 600 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 601 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 602 private Paint mTouchCrossHairColor; 603 private int mTouchHighlightX; 604 private int mTouchHighlightY; 605 606 /* 607 * Private message ids 608 */ 609 private static final int REMEMBER_PASSWORD = 1; 610 private static final int NEVER_REMEMBER_PASSWORD = 2; 611 private static final int SWITCH_TO_SHORTPRESS = 3; 612 private static final int SWITCH_TO_LONGPRESS = 4; 613 private static final int RELEASE_SINGLE_TAP = 5; 614 private static final int REQUEST_FORM_DATA = 6; 615 private static final int RESUME_WEBCORE_PRIORITY = 7; 616 private static final int DRAG_HELD_MOTIONLESS = 8; 617 private static final int AWAKEN_SCROLL_BARS = 9; 618 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 619 private static final int SCROLL_SELECT_TEXT = 11; 620 621 622 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 623 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 624 625 /* 626 * Package message ids 627 */ 628 //! arg1=x, arg2=y 629 static final int SCROLL_TO_MSG_ID = 101; 630 static final int SCROLL_BY_MSG_ID = 102; 631 //! arg1=x, arg2=y 632 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 633 //! arg1=x, arg2=y 634 static final int SYNC_SCROLL_TO_MSG_ID = 104; 635 static final int NEW_PICTURE_MSG_ID = 105; 636 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 637 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 638 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 639 static final int UPDATE_ZOOM_RANGE = 109; 640 static final int UNHANDLED_NAV_KEY = 110; 641 static final int CLEAR_TEXT_ENTRY = 111; 642 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 643 static final int SHOW_RECT_MSG_ID = 113; 644 static final int LONG_PRESS_CENTER = 114; 645 static final int PREVENT_TOUCH_ID = 115; 646 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 647 // obj=Rect in doc coordinates 648 static final int INVAL_RECT_MSG_ID = 117; 649 static final int REQUEST_KEYBOARD = 118; 650 static final int DO_MOTION_UP = 119; 651 static final int SHOW_FULLSCREEN = 120; 652 static final int HIDE_FULLSCREEN = 121; 653 static final int DOM_FOCUS_CHANGED = 122; 654 static final int REPLACE_BASE_CONTENT = 123; 655 static final int FORM_DID_BLUR = 124; 656 static final int RETURN_LABEL = 125; 657 static final int FIND_AGAIN = 126; 658 static final int CENTER_FIT_RECT = 127; 659 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 660 static final int SET_SCROLLBAR_MODES = 129; 661 static final int SELECTION_STRING_CHANGED = 130; 662 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 663 static final int SAVE_WEBARCHIVE_FINISHED = 132; 664 665 static final int SET_AUTOFILLABLE = 133; 666 static final int AUTOFILL_COMPLETE = 134; 667 668 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 669 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 670 671 static final String[] HandlerPrivateDebugString = { 672 "REMEMBER_PASSWORD", // = 1; 673 "NEVER_REMEMBER_PASSWORD", // = 2; 674 "SWITCH_TO_SHORTPRESS", // = 3; 675 "SWITCH_TO_LONGPRESS", // = 4; 676 "RELEASE_SINGLE_TAP", // = 5; 677 "REQUEST_FORM_DATA", // = 6; 678 "RESUME_WEBCORE_PRIORITY", // = 7; 679 "DRAG_HELD_MOTIONLESS", // = 8; 680 "AWAKEN_SCROLL_BARS", // = 9; 681 "PREVENT_DEFAULT_TIMEOUT", // = 10; 682 "SCROLL_SELECT_TEXT" // = 11; 683 }; 684 685 static final String[] HandlerPackageDebugString = { 686 "SCROLL_TO_MSG_ID", // = 101; 687 "SCROLL_BY_MSG_ID", // = 102; 688 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 689 "SYNC_SCROLL_TO_MSG_ID", // = 104; 690 "NEW_PICTURE_MSG_ID", // = 105; 691 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 692 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 693 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 694 "UPDATE_ZOOM_RANGE", // = 109; 695 "UNHANDLED_NAV_KEY", // = 110; 696 "CLEAR_TEXT_ENTRY", // = 111; 697 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 698 "SHOW_RECT_MSG_ID", // = 113; 699 "LONG_PRESS_CENTER", // = 114; 700 "PREVENT_TOUCH_ID", // = 115; 701 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 702 "INVAL_RECT_MSG_ID", // = 117; 703 "REQUEST_KEYBOARD", // = 118; 704 "DO_MOTION_UP", // = 119; 705 "SHOW_FULLSCREEN", // = 120; 706 "HIDE_FULLSCREEN", // = 121; 707 "DOM_FOCUS_CHANGED", // = 122; 708 "REPLACE_BASE_CONTENT", // = 123; 709 "FORM_DID_BLUR", // = 124; 710 "RETURN_LABEL", // = 125; 711 "FIND_AGAIN", // = 126; 712 "CENTER_FIT_RECT", // = 127; 713 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 714 "SET_SCROLLBAR_MODES", // = 129; 715 "SELECTION_STRING_CHANGED", // = 130; 716 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 717 "SAVE_WEBARCHIVE_FINISHED", // = 132; 718 "SET_AUTOFILLABLE", // = 133; 719 "AUTOFILL_COMPLETE" // = 134; 720 }; 721 722 // If the site doesn't use the viewport meta tag to specify the viewport, 723 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 724 static final int DEFAULT_VIEWPORT_WIDTH = 980; 725 726 // normally we try to fit the content to the minimum preferred width 727 // calculated by the Webkit. To avoid the bad behavior when some site's 728 // minimum preferred width keeps growing when changing the viewport width or 729 // the minimum preferred width is huge, an upper limit is needed. 730 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 731 732 // initial scale in percent. 0 means using default. 733 private int mInitialScaleInPercent = 0; 734 735 private boolean mUserScroll = false; 736 737 private int mSnapScrollMode = SNAP_NONE; 738 private static final int SNAP_NONE = 0; 739 private static final int SNAP_LOCK = 1; // not a separate state 740 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 741 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 742 private boolean mSnapPositive; 743 744 // keep these in sync with their counterparts in WebView.cpp 745 private static final int DRAW_EXTRAS_NONE = 0; 746 private static final int DRAW_EXTRAS_FIND = 1; 747 private static final int DRAW_EXTRAS_SELECTION = 2; 748 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 749 750 // keep this in sync with WebCore:ScrollbarMode in WebKit 751 private static final int SCROLLBAR_AUTO = 0; 752 private static final int SCROLLBAR_ALWAYSOFF = 1; 753 // as we auto fade scrollbar, this is ignored. 754 private static final int SCROLLBAR_ALWAYSON = 2; 755 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 756 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 757 758 // constants for determining script injection strategy 759 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 760 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 761 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 762 763 // the alias via which accessibility JavaScript interface is exposed 764 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 765 766 // JavaScript to inject the script chooser which will 767 // pick the right script for the current URL 768 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 769 "javascript:(function() {" + 770 " var chooser = document.createElement('script');" + 771 " chooser.type = 'text/javascript';" + 772 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 773 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 774 " })();"; 775 776 // Regular expression that matches the "axs" URL parameter. 777 // The value of 0 means the accessibility script is opted out 778 // The value of 1 means the accessibility script is already injected 779 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 780 781 // variable to cache the above pattern in case accessibility is enabled. 782 private Pattern mMatchAxsUrlParameterPattern; 783 784 /** 785 * Max distance to overscroll by in pixels. 786 * This how far content can be pulled beyond its normal bounds by the user. 787 */ 788 private int mOverscrollDistance; 789 790 /** 791 * Max distance to overfling by in pixels. 792 * This is how far flinged content can move beyond the end of its normal bounds. 793 */ 794 private int mOverflingDistance; 795 796 private OverScrollGlow mOverScrollGlow; 797 798 // Used to match key downs and key ups 799 private boolean mGotKeyDown; 800 801 /* package */ static boolean mLogEvent = true; 802 803 // for event log 804 private long mLastTouchUpTime = 0; 805 806 private WebViewCore.AutoFillData mAutoFillData; 807 808 /** 809 * URI scheme for telephone number 810 */ 811 public static final String SCHEME_TEL = "tel:"; 812 /** 813 * URI scheme for email address 814 */ 815 public static final String SCHEME_MAILTO = "mailto:"; 816 /** 817 * URI scheme for map address 818 */ 819 public static final String SCHEME_GEO = "geo:0,0?q="; 820 821 private int mBackgroundColor = Color.WHITE; 822 823 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 824 private int mAutoScrollX = 0; 825 private int mAutoScrollY = 0; 826 private boolean mSentAutoScrollMessage = false; 827 828 // Used to notify listeners of a new picture. 829 private PictureListener mPictureListener; 830 /** 831 * Interface to listen for new pictures as they change. 832 */ 833 public interface PictureListener { 834 /** 835 * Notify the listener that the picture has changed. 836 * @param view The WebView that owns the picture. 837 * @param picture The new picture. 838 */ 839 public void onNewPicture(WebView view, Picture picture); 840 } 841 842 // FIXME: Want to make this public, but need to change the API file. 843 public /*static*/ class HitTestResult { 844 /** 845 * Default HitTestResult, where the target is unknown 846 */ 847 public static final int UNKNOWN_TYPE = 0; 848 /** 849 * HitTestResult for hitting a HTML::a tag 850 */ 851 public static final int ANCHOR_TYPE = 1; 852 /** 853 * HitTestResult for hitting a phone number 854 */ 855 public static final int PHONE_TYPE = 2; 856 /** 857 * HitTestResult for hitting a map address 858 */ 859 public static final int GEO_TYPE = 3; 860 /** 861 * HitTestResult for hitting an email address 862 */ 863 public static final int EMAIL_TYPE = 4; 864 /** 865 * HitTestResult for hitting an HTML::img tag 866 */ 867 public static final int IMAGE_TYPE = 5; 868 /** 869 * HitTestResult for hitting a HTML::a tag which contains HTML::img 870 */ 871 public static final int IMAGE_ANCHOR_TYPE = 6; 872 /** 873 * HitTestResult for hitting a HTML::a tag with src=http 874 */ 875 public static final int SRC_ANCHOR_TYPE = 7; 876 /** 877 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 878 */ 879 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 880 /** 881 * HitTestResult for hitting an edit text area 882 */ 883 public static final int EDIT_TEXT_TYPE = 9; 884 885 private int mType; 886 private String mExtra; 887 888 HitTestResult() { 889 mType = UNKNOWN_TYPE; 890 } 891 892 private void setType(int type) { 893 mType = type; 894 } 895 896 private void setExtra(String extra) { 897 mExtra = extra; 898 } 899 900 public int getType() { 901 return mType; 902 } 903 904 public String getExtra() { 905 return mExtra; 906 } 907 } 908 909 /** 910 * Construct a new WebView with a Context object. 911 * @param context A Context object used to access application assets. 912 */ 913 public WebView(Context context) { 914 this(context, null); 915 } 916 917 /** 918 * Construct a new WebView with layout parameters. 919 * @param context A Context object used to access application assets. 920 * @param attrs An AttributeSet passed to our parent. 921 */ 922 public WebView(Context context, AttributeSet attrs) { 923 this(context, attrs, com.android.internal.R.attr.webViewStyle); 924 } 925 926 /** 927 * Construct a new WebView with layout parameters and a default style. 928 * @param context A Context object used to access application assets. 929 * @param attrs An AttributeSet passed to our parent. 930 * @param defStyle The default style resource ID. 931 */ 932 public WebView(Context context, AttributeSet attrs, int defStyle) { 933 this(context, attrs, defStyle, false); 934 } 935 936 /** 937 * Construct a new WebView with layout parameters and a default style. 938 * @param context A Context object used to access application assets. 939 * @param attrs An AttributeSet passed to our parent. 940 * @param defStyle The default style resource ID. 941 */ 942 public WebView(Context context, AttributeSet attrs, int defStyle, 943 boolean privateBrowsing) { 944 this(context, attrs, defStyle, null, privateBrowsing); 945 } 946 947 /** 948 * Construct a new WebView with layout parameters, a default style and a set 949 * of custom Javscript interfaces to be added to the WebView at initialization 950 * time. This guarantees that these interfaces will be available when the JS 951 * context is initialized. 952 * @param context A Context object used to access application assets. 953 * @param attrs An AttributeSet passed to our parent. 954 * @param defStyle The default style resource ID. 955 * @param javaScriptInterfaces is a Map of interface names, as keys, and 956 * object implementing those interfaces, as values. 957 * @hide pending API council approval. 958 */ 959 protected WebView(Context context, AttributeSet attrs, int defStyle, 960 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 961 super(context, attrs, defStyle); 962 963 // Used by the chrome stack to find application paths 964 JniUtil.setContext(context); 965 966 if (AccessibilityManager.getInstance(context).isEnabled()) { 967 if (javaScriptInterfaces == null) { 968 javaScriptInterfaces = new HashMap<String, Object>(); 969 } 970 exposeAccessibilityJavaScriptApi(javaScriptInterfaces); 971 } 972 973 mCallbackProxy = new CallbackProxy(context, this); 974 mViewManager = new ViewManager(this); 975 L10nUtils.loadStrings(context); 976 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 977 mDatabase = WebViewDatabase.getInstance(context); 978 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 979 mZoomManager = new ZoomManager(this, mCallbackProxy); 980 981 /* The init method must follow the creation of certain member variables, 982 * such as the mZoomManager. 983 */ 984 init(); 985 setupPackageListener(context); 986 setupProxyListener(context); 987 updateMultiTouchSupport(context); 988 989 if (privateBrowsing) { 990 startPrivateBrowsing(); 991 } 992 993 mAutoFillData = new WebViewCore.AutoFillData(); 994 } 995 996 private static class ProxyReceiver extends BroadcastReceiver { 997 @Override 998 public void onReceive(Context context, Intent intent) { 999 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1000 handleProxyBroadcast(intent); 1001 } 1002 } 1003 } 1004 1005 /* 1006 * A variable to track if there is a receiver added for PROXY_CHANGE_ACTION 1007 */ 1008 private static boolean sProxyReceiverAdded; 1009 1010 private static synchronized void setupProxyListener(Context context) { 1011 if (sProxyReceiverAdded) { 1012 return; 1013 } 1014 IntentFilter filter = new IntentFilter(); 1015 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1016 Intent currentProxy = context.getApplicationContext().registerReceiver( 1017 new ProxyReceiver(), filter); 1018 sProxyReceiverAdded = true; 1019 if (currentProxy != null) { 1020 handleProxyBroadcast(currentProxy); 1021 } 1022 } 1023 1024 private static void handleProxyBroadcast(Intent intent) { 1025 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1026 if (proxyProperties == null || proxyProperties.getHost() == null) { 1027 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, ""); 1028 return; 1029 } 1030 1031 String host = proxyProperties.getHost(); 1032 int port = proxyProperties.getPort(); 1033 if (port != 0) 1034 host += ": " + port; 1035 1036 // TODO: Handle exclusion list 1037 // The plan is to make an AndroidProxyResolver, and handle the blacklist 1038 // there 1039 String exclusionList = proxyProperties.getExclusionList(); 1040 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host); 1041 } 1042 1043 /* 1044 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1045 * or ACTION_PACKAGE_REMOVED. 1046 */ 1047 private static boolean sPackageInstallationReceiverAdded = false; 1048 1049 /* 1050 * A set of Google packages we monitor for the 1051 * navigator.isApplicationInstalled() API. Add additional packages as 1052 * needed. 1053 */ 1054 private static Set<String> sGoogleApps; 1055 static { 1056 sGoogleApps = new HashSet<String>(); 1057 sGoogleApps.add("com.google.android.youtube"); 1058 } 1059 1060 private static class PackageListener extends BroadcastReceiver { 1061 @Override 1062 public void onReceive(Context context, Intent intent) { 1063 final String action = intent.getAction(); 1064 final String packageName = intent.getData().getSchemeSpecificPart(); 1065 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1066 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1067 // if it is replacing, refreshPlugins() when adding 1068 return; 1069 } 1070 1071 if (sGoogleApps.contains(packageName)) { 1072 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1073 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1074 } else { 1075 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1076 } 1077 } 1078 1079 PluginManager pm = PluginManager.getInstance(context); 1080 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1081 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1082 } 1083 } 1084 } 1085 1086 private void setupPackageListener(Context context) { 1087 1088 /* 1089 * we must synchronize the instance check and the creation of the 1090 * receiver to ensure that only ONE receiver exists for all WebView 1091 * instances. 1092 */ 1093 synchronized (WebView.class) { 1094 1095 // if the receiver already exists then we do not need to register it 1096 // again 1097 if (sPackageInstallationReceiverAdded) { 1098 return; 1099 } 1100 1101 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1102 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1103 filter.addDataScheme("package"); 1104 BroadcastReceiver packageListener = new PackageListener(); 1105 context.getApplicationContext().registerReceiver(packageListener, filter); 1106 sPackageInstallationReceiverAdded = true; 1107 } 1108 1109 // check if any of the monitored apps are already installed 1110 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1111 1112 @Override 1113 protected Set<String> doInBackground(Void... unused) { 1114 Set<String> installedPackages = new HashSet<String>(); 1115 PackageManager pm = mContext.getPackageManager(); 1116 List<PackageInfo> packages = pm.getInstalledPackages(0); 1117 for (PackageInfo p : packages) { 1118 if (sGoogleApps.contains(p.packageName)) { 1119 installedPackages.add(p.packageName); 1120 } 1121 } 1122 return installedPackages; 1123 } 1124 1125 // Executes on the UI thread 1126 @Override 1127 protected void onPostExecute(Set<String> installedPackages) { 1128 if (mWebViewCore != null) { 1129 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1130 } 1131 } 1132 }; 1133 task.execute(); 1134 } 1135 1136 void updateMultiTouchSupport(Context context) { 1137 mZoomManager.updateMultiTouchSupport(context); 1138 } 1139 1140 private void init() { 1141 setWillNotDraw(false); 1142 setFocusable(true); 1143 setFocusableInTouchMode(true); 1144 setClickable(true); 1145 setLongClickable(true); 1146 1147 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1148 int slop = configuration.getScaledTouchSlop(); 1149 mTouchSlopSquare = slop * slop; 1150 mMinLockSnapReverseDistance = slop; 1151 slop = configuration.getScaledDoubleTapSlop(); 1152 mDoubleTapSlopSquare = slop * slop; 1153 final float density = getContext().getResources().getDisplayMetrics().density; 1154 // use one line height, 16 based on our current default font, for how 1155 // far we allow a touch be away from the edge of a link 1156 mNavSlop = (int) (16 * density); 1157 mZoomManager.init(density); 1158 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1159 1160 // Compute the inverse of the density squared. 1161 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1162 1163 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1164 mOverflingDistance = configuration.getScaledOverflingDistance(); 1165 } 1166 1167 /** 1168 * Exposes accessibility APIs to JavaScript by appending them to the JavaScript 1169 * interfaces map provided by the WebView client. In case of conflicting 1170 * alias with the one of the accessibility API the user specified one wins. 1171 * 1172 * @param javaScriptInterfaces A map with interfaces to be exposed to JavaScript. 1173 */ 1174 private void exposeAccessibilityJavaScriptApi(Map<String, Object> javaScriptInterfaces) { 1175 if (javaScriptInterfaces.containsKey(ALIAS_ACCESSIBILITY_JS_INTERFACE)) { 1176 Log.w(LOGTAG, "JavaScript interface mapped to \"" + ALIAS_ACCESSIBILITY_JS_INTERFACE 1177 + "\" overrides the accessibility API JavaScript interface. No accessibility" 1178 + "API will be exposed to JavaScript!"); 1179 return; 1180 } 1181 1182 // expose the TTS for now ... 1183 javaScriptInterfaces.put(ALIAS_ACCESSIBILITY_JS_INTERFACE, 1184 new TextToSpeech(getContext(), null)); 1185 } 1186 1187 @Override 1188 public void setOverScrollMode(int mode) { 1189 super.setOverScrollMode(mode); 1190 if (mode != OVER_SCROLL_NEVER) { 1191 if (mOverScrollGlow == null) { 1192 mOverScrollGlow = new OverScrollGlow(this); 1193 } 1194 } else { 1195 mOverScrollGlow = null; 1196 } 1197 } 1198 1199 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1200 final float density = mContext.getResources().getDisplayMetrics().density 1201 * 100 / zoomDensity; 1202 mNavSlop = (int) (16 * density); 1203 mZoomManager.updateDefaultZoomDensity(density); 1204 } 1205 1206 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1207 String password, final Message resumeMsg) { 1208 boolean rVal = false; 1209 if (resumeMsg == null) { 1210 // null resumeMsg implies saving password silently 1211 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1212 } else { 1213 final Message remember = mPrivateHandler.obtainMessage( 1214 REMEMBER_PASSWORD); 1215 remember.getData().putString("host", schemePlusHost); 1216 remember.getData().putString("username", username); 1217 remember.getData().putString("password", password); 1218 remember.obj = resumeMsg; 1219 1220 final Message neverRemember = mPrivateHandler.obtainMessage( 1221 NEVER_REMEMBER_PASSWORD); 1222 neverRemember.getData().putString("host", schemePlusHost); 1223 neverRemember.getData().putString("username", username); 1224 neverRemember.getData().putString("password", password); 1225 neverRemember.obj = resumeMsg; 1226 1227 new AlertDialog.Builder(getContext()) 1228 .setTitle(com.android.internal.R.string.save_password_label) 1229 .setMessage(com.android.internal.R.string.save_password_message) 1230 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1231 new DialogInterface.OnClickListener() { 1232 public void onClick(DialogInterface dialog, int which) { 1233 resumeMsg.sendToTarget(); 1234 } 1235 }) 1236 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1237 new DialogInterface.OnClickListener() { 1238 public void onClick(DialogInterface dialog, int which) { 1239 remember.sendToTarget(); 1240 } 1241 }) 1242 .setNegativeButton(com.android.internal.R.string.save_password_never, 1243 new DialogInterface.OnClickListener() { 1244 public void onClick(DialogInterface dialog, int which) { 1245 neverRemember.sendToTarget(); 1246 } 1247 }) 1248 .setOnCancelListener(new OnCancelListener() { 1249 public void onCancel(DialogInterface dialog) { 1250 resumeMsg.sendToTarget(); 1251 } 1252 }).show(); 1253 // Return true so that WebViewCore will pause while the dialog is 1254 // up. 1255 rVal = true; 1256 } 1257 return rVal; 1258 } 1259 1260 @Override 1261 public void setScrollBarStyle(int style) { 1262 if (style == View.SCROLLBARS_INSIDE_INSET 1263 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1264 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1265 } else { 1266 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1267 } 1268 super.setScrollBarStyle(style); 1269 } 1270 1271 /** 1272 * Specify whether the horizontal scrollbar has overlay style. 1273 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1274 */ 1275 public void setHorizontalScrollbarOverlay(boolean overlay) { 1276 mOverlayHorizontalScrollbar = overlay; 1277 } 1278 1279 /** 1280 * Specify whether the vertical scrollbar has overlay style. 1281 * @param overlay TRUE if vertical scrollbar should have overlay style. 1282 */ 1283 public void setVerticalScrollbarOverlay(boolean overlay) { 1284 mOverlayVerticalScrollbar = overlay; 1285 } 1286 1287 /** 1288 * Return whether horizontal scrollbar has overlay style 1289 * @return TRUE if horizontal scrollbar has overlay style. 1290 */ 1291 public boolean overlayHorizontalScrollbar() { 1292 return mOverlayHorizontalScrollbar; 1293 } 1294 1295 /** 1296 * Return whether vertical scrollbar has overlay style 1297 * @return TRUE if vertical scrollbar has overlay style. 1298 */ 1299 public boolean overlayVerticalScrollbar() { 1300 return mOverlayVerticalScrollbar; 1301 } 1302 1303 /* 1304 * Return the width of the view where the content of WebView should render 1305 * to. 1306 * Note: this can be called from WebCoreThread. 1307 */ 1308 /* package */ int getViewWidth() { 1309 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1310 return getWidth(); 1311 } else { 1312 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1313 } 1314 } 1315 1316 /* 1317 * returns the height of the titlebarview (if any). Does not care about 1318 * scrolling 1319 */ 1320 int getTitleHeight() { 1321 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1322 } 1323 1324 /* 1325 * Return the amount of the titlebarview (if any) that is visible 1326 * 1327 * @hide 1328 */ 1329 public int getVisibleTitleHeight() { 1330 // need to restrict mScrollY due to over scroll 1331 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1332 } 1333 1334 /* 1335 * Return the height of the view where the content of WebView should render 1336 * to. Note that this excludes mTitleBar, if there is one. 1337 * Note: this can be called from WebCoreThread. 1338 */ 1339 /* package */ int getViewHeight() { 1340 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1341 } 1342 1343 private int getViewHeightWithTitle() { 1344 int height = getHeight(); 1345 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1346 height -= getHorizontalScrollbarHeight(); 1347 } 1348 return height; 1349 } 1350 1351 /** 1352 * @return The SSL certificate for the main top-level page or null if 1353 * there is no certificate (the site is not secure). 1354 */ 1355 public SslCertificate getCertificate() { 1356 return mCertificate; 1357 } 1358 1359 /** 1360 * Sets the SSL certificate for the main top-level page. 1361 */ 1362 public void setCertificate(SslCertificate certificate) { 1363 if (DebugFlags.WEB_VIEW) { 1364 Log.v(LOGTAG, "setCertificate=" + certificate); 1365 } 1366 // here, the certificate can be null (if the site is not secure) 1367 mCertificate = certificate; 1368 } 1369 1370 //------------------------------------------------------------------------- 1371 // Methods called by activity 1372 //------------------------------------------------------------------------- 1373 1374 /** 1375 * Save the username and password for a particular host in the WebView's 1376 * internal database. 1377 * @param host The host that required the credentials. 1378 * @param username The username for the given host. 1379 * @param password The password for the given host. 1380 */ 1381 public void savePassword(String host, String username, String password) { 1382 mDatabase.setUsernamePassword(host, username, password); 1383 } 1384 1385 /** 1386 * Set the HTTP authentication credentials for a given host and realm. 1387 * 1388 * @param host The host for the credentials. 1389 * @param realm The realm for the credentials. 1390 * @param username The username for the password. If it is null, it means 1391 * password can't be saved. 1392 * @param password The password 1393 */ 1394 public void setHttpAuthUsernamePassword(String host, String realm, 1395 String username, String password) { 1396 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1397 } 1398 1399 /** 1400 * Retrieve the HTTP authentication username and password for a given 1401 * host & realm pair 1402 * 1403 * @param host The host for which the credentials apply. 1404 * @param realm The realm for which the credentials apply. 1405 * @return String[] if found, String[0] is username, which can be null and 1406 * String[1] is password. Return null if it can't find anything. 1407 */ 1408 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1409 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1410 } 1411 1412 /** 1413 * Remove Find or Select ActionModes, if active. 1414 */ 1415 private void clearActionModes() { 1416 if (mSelectCallback != null) { 1417 mSelectCallback.finish(); 1418 } 1419 if (mFindCallback != null) { 1420 mFindCallback.finish(); 1421 } 1422 } 1423 1424 /** 1425 * Called to clear state when moving from one page to another, or changing 1426 * in some other way that makes elements associated with the current page 1427 * (such as WebTextView or ActionModes) no longer relevant. 1428 */ 1429 private void clearHelpers() { 1430 clearTextEntry(); 1431 clearActionModes(); 1432 dismissFullScreenMode(); 1433 } 1434 1435 /** 1436 * Destroy the internal state of the WebView. This method should be called 1437 * after the WebView has been removed from the view system. No other 1438 * methods may be called on a WebView after destroy. 1439 */ 1440 public void destroy() { 1441 clearHelpers(); 1442 if (mListBoxDialog != null) { 1443 mListBoxDialog.dismiss(); 1444 mListBoxDialog = null; 1445 } 1446 if (mWebViewCore != null) { 1447 // Set the handlers to null before destroying WebViewCore so no 1448 // more messages will be posted. 1449 mCallbackProxy.setWebViewClient(null); 1450 mCallbackProxy.setWebChromeClient(null); 1451 // Tell WebViewCore to destroy itself 1452 synchronized (this) { 1453 WebViewCore webViewCore = mWebViewCore; 1454 mWebViewCore = null; // prevent using partial webViewCore 1455 webViewCore.destroy(); 1456 } 1457 // Remove any pending messages that might not be serviced yet. 1458 mPrivateHandler.removeCallbacksAndMessages(null); 1459 mCallbackProxy.removeCallbacksAndMessages(null); 1460 // Wake up the WebCore thread just in case it is waiting for a 1461 // JavaScript dialog. 1462 synchronized (mCallbackProxy) { 1463 mCallbackProxy.notify(); 1464 } 1465 } 1466 if (mNativeClass != 0) { 1467 nativeDestroy(); 1468 mNativeClass = 0; 1469 } 1470 } 1471 1472 /** 1473 * Enables platform notifications of data state and proxy changes. 1474 */ 1475 public static void enablePlatformNotifications() { 1476 Network.enablePlatformNotifications(); 1477 } 1478 1479 /** 1480 * If platform notifications are enabled, this should be called 1481 * from the Activity's onPause() or onStop(). 1482 */ 1483 public static void disablePlatformNotifications() { 1484 Network.disablePlatformNotifications(); 1485 } 1486 1487 /** 1488 * Sets JavaScript engine flags. 1489 * 1490 * @param flags JS engine flags in a String 1491 * 1492 * @hide pending API solidification 1493 */ 1494 public void setJsFlags(String flags) { 1495 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1496 } 1497 1498 /** 1499 * Inform WebView of the network state. This is used to set 1500 * the JavaScript property window.navigator.isOnline and 1501 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1502 * @param networkUp boolean indicating if network is available 1503 */ 1504 public void setNetworkAvailable(boolean networkUp) { 1505 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1506 networkUp ? 1 : 0, 0); 1507 } 1508 1509 /** 1510 * Inform WebView about the current network type. 1511 * {@hide} 1512 */ 1513 public void setNetworkType(String type, String subtype) { 1514 Map<String, String> map = new HashMap<String, String>(); 1515 map.put("type", type); 1516 map.put("subtype", subtype); 1517 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1518 } 1519 /** 1520 * Save the state of this WebView used in 1521 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1522 * method no longer stores the display data for this WebView. The previous 1523 * behavior could potentially leak files if {@link #restoreState} was never 1524 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1525 * and restoring the display data. 1526 * @param outState The Bundle to store the WebView state. 1527 * @return The same copy of the back/forward list used to save the state. If 1528 * saveState fails, the returned list will be null. 1529 * @see #savePicture 1530 * @see #restorePicture 1531 */ 1532 public WebBackForwardList saveState(Bundle outState) { 1533 if (outState == null) { 1534 return null; 1535 } 1536 // We grab a copy of the back/forward list because a client of WebView 1537 // may have invalidated the history list by calling clearHistory. 1538 WebBackForwardList list = copyBackForwardList(); 1539 final int currentIndex = list.getCurrentIndex(); 1540 final int size = list.getSize(); 1541 // We should fail saving the state if the list is empty or the index is 1542 // not in a valid range. 1543 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1544 return null; 1545 } 1546 outState.putInt("index", currentIndex); 1547 // FIXME: This should just be a byte[][] instead of ArrayList but 1548 // Parcel.java does not have the code to handle multi-dimensional 1549 // arrays. 1550 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1551 for (int i = 0; i < size; i++) { 1552 WebHistoryItem item = list.getItemAtIndex(i); 1553 if (null == item) { 1554 // FIXME: this shouldn't happen 1555 // need to determine how item got set to null 1556 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1557 return null; 1558 } 1559 byte[] data = item.getFlattenedData(); 1560 if (data == null) { 1561 // It would be very odd to not have any data for a given history 1562 // item. And we will fail to rebuild the history list without 1563 // flattened data. 1564 return null; 1565 } 1566 history.add(data); 1567 } 1568 outState.putSerializable("history", history); 1569 if (mCertificate != null) { 1570 outState.putBundle("certificate", 1571 SslCertificate.saveState(mCertificate)); 1572 } 1573 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1574 mZoomManager.saveZoomState(outState); 1575 return list; 1576 } 1577 1578 /** 1579 * Save the current display data to the Bundle given. Used in conjunction 1580 * with {@link #saveState}. 1581 * @param b A Bundle to store the display data. 1582 * @param dest The file to store the serialized picture data. Will be 1583 * overwritten with this WebView's picture data. 1584 * @return True if the picture was successfully saved. 1585 */ 1586 public boolean savePicture(Bundle b, final File dest) { 1587 if (dest == null || b == null) { 1588 return false; 1589 } 1590 final Picture p = capturePicture(); 1591 // Use a temporary file while writing to ensure the destination file 1592 // contains valid data. 1593 final File temp = new File(dest.getPath() + ".writing"); 1594 new Thread(new Runnable() { 1595 public void run() { 1596 FileOutputStream out = null; 1597 try { 1598 out = new FileOutputStream(temp); 1599 p.writeToStream(out); 1600 // Writing the picture succeeded, rename the temporary file 1601 // to the destination. 1602 temp.renameTo(dest); 1603 } catch (Exception e) { 1604 // too late to do anything about it. 1605 } finally { 1606 if (out != null) { 1607 try { 1608 out.close(); 1609 } catch (Exception e) { 1610 // Can't do anything about that 1611 } 1612 } 1613 temp.delete(); 1614 } 1615 } 1616 }).start(); 1617 // now update the bundle 1618 b.putInt("scrollX", mScrollX); 1619 b.putInt("scrollY", mScrollY); 1620 mZoomManager.saveZoomState(b); 1621 return true; 1622 } 1623 1624 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1625 int sx = b.getInt("scrollX", 0); 1626 int sy = b.getInt("scrollY", 0); 1627 1628 mDrawHistory = true; 1629 mHistoryPicture = p; 1630 mScrollX = sx; 1631 mScrollY = sy; 1632 mZoomManager.restoreZoomState(b); 1633 final float scale = mZoomManager.getScale(); 1634 mHistoryWidth = Math.round(p.getWidth() * scale); 1635 mHistoryHeight = Math.round(p.getHeight() * scale); 1636 1637 invalidate(); 1638 } 1639 1640 /** 1641 * Restore the display data that was save in {@link #savePicture}. Used in 1642 * conjunction with {@link #restoreState}. 1643 * @param b A Bundle containing the saved display data. 1644 * @param src The file where the picture data was stored. 1645 * @return True if the picture was successfully restored. 1646 */ 1647 public boolean restorePicture(Bundle b, File src) { 1648 if (src == null || b == null) { 1649 return false; 1650 } 1651 if (!src.exists()) { 1652 return false; 1653 } 1654 try { 1655 final FileInputStream in = new FileInputStream(src); 1656 final Bundle copy = new Bundle(b); 1657 new Thread(new Runnable() { 1658 public void run() { 1659 try { 1660 final Picture p = Picture.createFromStream(in); 1661 if (p != null) { 1662 // Post a runnable on the main thread to update the 1663 // history picture fields. 1664 mPrivateHandler.post(new Runnable() { 1665 public void run() { 1666 restoreHistoryPictureFields(p, copy); 1667 } 1668 }); 1669 } 1670 } finally { 1671 try { 1672 in.close(); 1673 } catch (Exception e) { 1674 // Nothing we can do now. 1675 } 1676 } 1677 } 1678 }).start(); 1679 } catch (FileNotFoundException e){ 1680 e.printStackTrace(); 1681 } 1682 return true; 1683 } 1684 1685 /** 1686 * Restore the state of this WebView from the given map used in 1687 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1688 * be called to restore the state of the WebView before using the object. If 1689 * it is called after the WebView has had a chance to build state (load 1690 * pages, create a back/forward list, etc.) there may be undesirable 1691 * side-effects. Please note that this method no longer restores the 1692 * display data for this WebView. See {@link #savePicture} and {@link 1693 * #restorePicture} for saving and restoring the display data. 1694 * @param inState The incoming Bundle of state. 1695 * @return The restored back/forward list or null if restoreState failed. 1696 * @see #savePicture 1697 * @see #restorePicture 1698 */ 1699 public WebBackForwardList restoreState(Bundle inState) { 1700 WebBackForwardList returnList = null; 1701 if (inState == null) { 1702 return returnList; 1703 } 1704 if (inState.containsKey("index") && inState.containsKey("history")) { 1705 mCertificate = SslCertificate.restoreState( 1706 inState.getBundle("certificate")); 1707 1708 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1709 final int index = inState.getInt("index"); 1710 // We can't use a clone of the list because we need to modify the 1711 // shared copy, so synchronize instead to prevent concurrent 1712 // modifications. 1713 synchronized (list) { 1714 final List<byte[]> history = 1715 (List<byte[]>) inState.getSerializable("history"); 1716 final int size = history.size(); 1717 // Check the index bounds so we don't crash in native code while 1718 // restoring the history index. 1719 if (index < 0 || index >= size) { 1720 return null; 1721 } 1722 for (int i = 0; i < size; i++) { 1723 byte[] data = history.remove(0); 1724 if (data == null) { 1725 // If we somehow have null data, we cannot reconstruct 1726 // the item and thus our history list cannot be rebuilt. 1727 return null; 1728 } 1729 WebHistoryItem item = new WebHistoryItem(data); 1730 list.addHistoryItem(item); 1731 } 1732 // Grab the most recent copy to return to the caller. 1733 returnList = copyBackForwardList(); 1734 // Update the copy to have the correct index. 1735 returnList.setCurrentIndex(index); 1736 } 1737 // Restore private browsing setting. 1738 if (inState.getBoolean("privateBrowsingEnabled")) { 1739 getSettings().setPrivateBrowsingEnabled(true); 1740 } 1741 mZoomManager.restoreZoomState(inState); 1742 // Remove all pending messages because we are restoring previous 1743 // state. 1744 mWebViewCore.removeMessages(); 1745 // Send a restore state message. 1746 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1747 } 1748 return returnList; 1749 } 1750 1751 /** 1752 * Load the given url with the extra headers. 1753 * @param url The url of the resource to load. 1754 * @param extraHeaders The extra headers sent with this url. This should not 1755 * include the common headers like "user-agent". If it does, it 1756 * will be replaced by the intrinsic value of the WebView. 1757 */ 1758 public void loadUrl(String url, Map<String, String> extraHeaders) { 1759 switchOutDrawHistory(); 1760 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1761 arg.mUrl = url; 1762 arg.mExtraHeaders = extraHeaders; 1763 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1764 clearHelpers(); 1765 } 1766 1767 /** 1768 * Load the given url. 1769 * @param url The url of the resource to load. 1770 */ 1771 public void loadUrl(String url) { 1772 if (url == null) { 1773 return; 1774 } 1775 loadUrl(url, null); 1776 } 1777 1778 /** 1779 * Load the url with postData using "POST" method into the WebView. If url 1780 * is not a network url, it will be loaded with {link 1781 * {@link #loadUrl(String)} instead. 1782 * 1783 * @param url The url of the resource to load. 1784 * @param postData The data will be passed to "POST" request. 1785 */ 1786 public void postUrl(String url, byte[] postData) { 1787 if (URLUtil.isNetworkUrl(url)) { 1788 switchOutDrawHistory(); 1789 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1790 arg.mUrl = url; 1791 arg.mPostData = postData; 1792 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1793 clearHelpers(); 1794 } else { 1795 loadUrl(url); 1796 } 1797 } 1798 1799 /** 1800 * Load the given data into the WebView. This will load the data into 1801 * WebView using the data: scheme. Content loaded through this mechanism 1802 * does not have the ability to load content from the network. 1803 * @param data A String of data in the given encoding. The date must 1804 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1805 * %27, %3f respectively. 1806 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1807 * @param encoding The encoding of the data. i.e. utf-8, base64 1808 */ 1809 public void loadData(String data, String mimeType, String encoding) { 1810 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1811 } 1812 1813 /** 1814 * Load the given data into the WebView, use the provided URL as the base 1815 * URL for the content. The base URL is the URL that represents the page 1816 * that is loaded through this interface. As such, it is used to resolve any 1817 * relative URLs. The historyUrl is used for the history entry. 1818 * <p> 1819 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1820 * files through "file:///android_asset/" for the sub resources is more 1821 * restricted. If you provide null or empty string as baseUrl, you won't be 1822 * able to access asset files. If the baseUrl is anything other than 1823 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1824 * sub resources. 1825 * 1826 * @param baseUrl Url to resolve relative paths with, if null defaults to 1827 * "about:blank" 1828 * @param data A String of data in the given encoding. 1829 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1830 * defaults to "text/html" 1831 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1832 * @param historyUrl URL to use as the history entry. Can be null. 1833 */ 1834 public void loadDataWithBaseURL(String baseUrl, String data, 1835 String mimeType, String encoding, String historyUrl) { 1836 1837 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1838 loadData(data, mimeType, encoding); 1839 return; 1840 } 1841 switchOutDrawHistory(); 1842 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1843 arg.mBaseUrl = baseUrl; 1844 arg.mData = data; 1845 arg.mMimeType = mimeType; 1846 arg.mEncoding = encoding; 1847 arg.mHistoryUrl = historyUrl; 1848 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1849 clearHelpers(); 1850 } 1851 1852 /** 1853 * Saves the current view as a web archive. 1854 * 1855 * @param filename The filename where the archive should be placed. 1856 */ 1857 public void saveWebArchive(String filename) { 1858 saveWebArchive(filename, false, null); 1859 } 1860 1861 /* package */ static class SaveWebArchiveMessage { 1862 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1863 mBasename = basename; 1864 mAutoname = autoname; 1865 mCallback = callback; 1866 } 1867 1868 /* package */ final String mBasename; 1869 /* package */ final boolean mAutoname; 1870 /* package */ final ValueCallback<String> mCallback; 1871 /* package */ String mResultFile; 1872 } 1873 1874 /** 1875 * Saves the current view as a web archive. 1876 * 1877 * @param basename The filename where the archive should be placed. 1878 * @param autoname If false, takes basename to be a file. If true, basename 1879 * is assumed to be a directory in which a filename will be 1880 * chosen according to the url of the current page. 1881 * @param callback Called after the web archive has been saved. The 1882 * parameter for onReceiveValue will either be the filename 1883 * under which the file was saved, or null if saving the 1884 * file failed. 1885 */ 1886 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1887 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1888 new SaveWebArchiveMessage(basename, autoname, callback)); 1889 } 1890 1891 /** 1892 * Stop the current load. 1893 */ 1894 public void stopLoading() { 1895 // TODO: should we clear all the messages in the queue before sending 1896 // STOP_LOADING? 1897 switchOutDrawHistory(); 1898 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1899 } 1900 1901 /** 1902 * Reload the current url. 1903 */ 1904 public void reload() { 1905 clearHelpers(); 1906 switchOutDrawHistory(); 1907 mWebViewCore.sendMessage(EventHub.RELOAD); 1908 } 1909 1910 /** 1911 * Return true if this WebView has a back history item. 1912 * @return True iff this WebView has a back history item. 1913 */ 1914 public boolean canGoBack() { 1915 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1916 synchronized (l) { 1917 if (l.getClearPending()) { 1918 return false; 1919 } else { 1920 return l.getCurrentIndex() > 0; 1921 } 1922 } 1923 } 1924 1925 /** 1926 * Go back in the history of this WebView. 1927 */ 1928 public void goBack() { 1929 goBackOrForward(-1); 1930 } 1931 1932 /** 1933 * Return true if this WebView has a forward history item. 1934 * @return True iff this Webview has a forward history item. 1935 */ 1936 public boolean canGoForward() { 1937 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1938 synchronized (l) { 1939 if (l.getClearPending()) { 1940 return false; 1941 } else { 1942 return l.getCurrentIndex() < l.getSize() - 1; 1943 } 1944 } 1945 } 1946 1947 /** 1948 * Go forward in the history of this WebView. 1949 */ 1950 public void goForward() { 1951 goBackOrForward(1); 1952 } 1953 1954 /** 1955 * Return true if the page can go back or forward the given 1956 * number of steps. 1957 * @param steps The negative or positive number of steps to move the 1958 * history. 1959 */ 1960 public boolean canGoBackOrForward(int steps) { 1961 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1962 synchronized (l) { 1963 if (l.getClearPending()) { 1964 return false; 1965 } else { 1966 int newIndex = l.getCurrentIndex() + steps; 1967 return newIndex >= 0 && newIndex < l.getSize(); 1968 } 1969 } 1970 } 1971 1972 /** 1973 * Go to the history item that is the number of steps away from 1974 * the current item. Steps is negative if backward and positive 1975 * if forward. 1976 * @param steps The number of steps to take back or forward in the back 1977 * forward list. 1978 */ 1979 public void goBackOrForward(int steps) { 1980 goBackOrForward(steps, false); 1981 } 1982 1983 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1984 if (steps != 0) { 1985 clearHelpers(); 1986 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1987 ignoreSnapshot ? 1 : 0); 1988 } 1989 } 1990 1991 /** 1992 * Returns true if private browsing is enabled in this WebView. 1993 */ 1994 public boolean isPrivateBrowsingEnabled() { 1995 return getSettings().isPrivateBrowsingEnabled(); 1996 } 1997 1998 private void startPrivateBrowsing() { 1999 boolean wasPrivateBrowsingEnabled = isPrivateBrowsingEnabled(); 2000 2001 getSettings().setPrivateBrowsingEnabled(true); 2002 2003 if (!wasPrivateBrowsingEnabled) { 2004 loadUrl("browser:incognito"); 2005 } 2006 } 2007 2008 private boolean extendScroll(int y) { 2009 int finalY = mScroller.getFinalY(); 2010 int newY = pinLocY(finalY + y); 2011 if (newY == finalY) return false; 2012 mScroller.setFinalY(newY); 2013 mScroller.extendDuration(computeDuration(0, y)); 2014 return true; 2015 } 2016 2017 /** 2018 * Scroll the contents of the view up by half the view size 2019 * @param top true to jump to the top of the page 2020 * @return true if the page was scrolled 2021 */ 2022 public boolean pageUp(boolean top) { 2023 if (mNativeClass == 0) { 2024 return false; 2025 } 2026 nativeClearCursor(); // start next trackball movement from page edge 2027 if (top) { 2028 // go to the top of the document 2029 return pinScrollTo(mScrollX, 0, true, 0); 2030 } 2031 // Page up 2032 int h = getHeight(); 2033 int y; 2034 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2035 y = -h + PAGE_SCROLL_OVERLAP; 2036 } else { 2037 y = -h / 2; 2038 } 2039 mUserScroll = true; 2040 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2041 : extendScroll(y); 2042 } 2043 2044 /** 2045 * Scroll the contents of the view down by half the page size 2046 * @param bottom true to jump to bottom of page 2047 * @return true if the page was scrolled 2048 */ 2049 public boolean pageDown(boolean bottom) { 2050 if (mNativeClass == 0) { 2051 return false; 2052 } 2053 nativeClearCursor(); // start next trackball movement from page edge 2054 if (bottom) { 2055 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2056 } 2057 // Page down. 2058 int h = getHeight(); 2059 int y; 2060 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2061 y = h - PAGE_SCROLL_OVERLAP; 2062 } else { 2063 y = h / 2; 2064 } 2065 mUserScroll = true; 2066 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2067 : extendScroll(y); 2068 } 2069 2070 /** 2071 * Clear the view so that onDraw() will draw nothing but white background, 2072 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2073 */ 2074 public void clearView() { 2075 mContentWidth = 0; 2076 mContentHeight = 0; 2077 setBaseLayer(0, null); 2078 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2079 } 2080 2081 /** 2082 * Return a new picture that captures the current display of the webview. 2083 * This is a copy of the display, and will be unaffected if the webview 2084 * later loads a different URL. 2085 * 2086 * @return a picture containing the current contents of the view. Note this 2087 * picture is of the entire document, and is not restricted to the 2088 * bounds of the view. 2089 */ 2090 public Picture capturePicture() { 2091 if (mNativeClass == 0) return null; 2092 Picture result = new Picture(); 2093 nativeCopyBaseContentToPicture(result); 2094 return result; 2095 } 2096 2097 /** 2098 * Return true if the browser is displaying a TextView for text input. 2099 */ 2100 private boolean inEditingMode() { 2101 return mWebTextView != null && mWebTextView.getParent() != null; 2102 } 2103 2104 /** 2105 * Remove the WebTextView. 2106 */ 2107 private void clearTextEntry() { 2108 if (inEditingMode()) { 2109 mWebTextView.remove(); 2110 } else { 2111 // The keyboard may be open with the WebView as the served view 2112 hideSoftKeyboard(); 2113 } 2114 } 2115 2116 /** 2117 * Return the current scale of the WebView 2118 * @return The current scale. 2119 */ 2120 public float getScale() { 2121 return mZoomManager.getScale(); 2122 } 2123 2124 /** 2125 * Set the initial scale for the WebView. 0 means default. If 2126 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2127 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2128 * WebView starts will this value as initial scale. 2129 * 2130 * @param scaleInPercent The initial scale in percent. 2131 */ 2132 public void setInitialScale(int scaleInPercent) { 2133 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2134 } 2135 2136 /** 2137 * Invoke the graphical zoom picker widget for this WebView. This will 2138 * result in the zoom widget appearing on the screen to control the zoom 2139 * level of this WebView. 2140 */ 2141 public void invokeZoomPicker() { 2142 if (!getSettings().supportZoom()) { 2143 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2144 return; 2145 } 2146 clearHelpers(); 2147 mZoomManager.invokeZoomPicker(); 2148 } 2149 2150 /** 2151 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2152 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2153 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2154 * anchor does not have a url or if it is a JavaScript url, the type will 2155 * be UNKNOWN_TYPE and the url has to be retrieved through 2156 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2157 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2158 * the "extra" field. A type of 2159 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2160 * a child node. If a phone number is found, the HitTestResult type is set 2161 * to PHONE_TYPE and the phone number is set in the "extra" field of 2162 * HitTestResult. If a map address is found, the HitTestResult type is set 2163 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2164 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2165 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2166 * HitTestResult type is set to UNKNOWN_TYPE. 2167 */ 2168 public HitTestResult getHitTestResult() { 2169 return hitTestResult(mInitialHitTestResult); 2170 } 2171 2172 private HitTestResult hitTestResult(HitTestResult fallback) { 2173 if (mNativeClass == 0) { 2174 return null; 2175 } 2176 2177 HitTestResult result = new HitTestResult(); 2178 if (nativeHasCursorNode()) { 2179 if (nativeCursorIsTextInput()) { 2180 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2181 } else { 2182 String text = nativeCursorText(); 2183 if (text != null) { 2184 if (text.startsWith(SCHEME_TEL)) { 2185 result.setType(HitTestResult.PHONE_TYPE); 2186 result.setExtra(text.substring(SCHEME_TEL.length())); 2187 } else if (text.startsWith(SCHEME_MAILTO)) { 2188 result.setType(HitTestResult.EMAIL_TYPE); 2189 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2190 } else if (text.startsWith(SCHEME_GEO)) { 2191 result.setType(HitTestResult.GEO_TYPE); 2192 result.setExtra(URLDecoder.decode(text 2193 .substring(SCHEME_GEO.length()))); 2194 } else if (nativeCursorIsAnchor()) { 2195 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2196 result.setExtra(text); 2197 } 2198 } 2199 } 2200 } else if (fallback != null) { 2201 /* If webkit causes a rebuild while the long press is in progress, 2202 * the cursor node may be reset, even if it is still around. This 2203 * uses the cursor node saved when the touch began. Since the 2204 * nativeImageURI below only changes the result if it is successful, 2205 * this uses the data beneath the touch if available or the original 2206 * tap data otherwise. 2207 */ 2208 Log.v(LOGTAG, "hitTestResult use fallback"); 2209 result = fallback; 2210 } 2211 int type = result.getType(); 2212 if (type == HitTestResult.UNKNOWN_TYPE 2213 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2214 // Now check to see if it is an image. 2215 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2216 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2217 String text = nativeImageURI(contentX, contentY); 2218 if (text != null) { 2219 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2220 HitTestResult.IMAGE_TYPE : 2221 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2222 result.setExtra(text); 2223 } 2224 } 2225 return result; 2226 } 2227 2228 // Called by JNI when the DOM has changed the focus. Clear the focus so 2229 // that new keys will go to the newly focused field 2230 private void domChangedFocus() { 2231 if (inEditingMode()) { 2232 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2233 } 2234 } 2235 /** 2236 * Request the anchor or image element URL at the last tapped point. 2237 * If hrefMsg is null, this method returns immediately and does not 2238 * dispatch hrefMsg to its target. If the tapped point hits an image, 2239 * an anchor, or an image in an anchor, the message associates 2240 * strings in named keys in its data. The value paired with the key 2241 * may be an empty string. 2242 * 2243 * @param hrefMsg This message will be dispatched with the result of the 2244 * request. The message data contains three keys: 2245 * - "url" returns the anchor's href attribute. 2246 * - "title" returns the anchor's text. 2247 * - "src" returns the image's src attribute. 2248 */ 2249 public void requestFocusNodeHref(Message hrefMsg) { 2250 if (hrefMsg == null) { 2251 return; 2252 } 2253 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2254 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2255 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2256 contentX, contentY, hrefMsg); 2257 } 2258 2259 /** 2260 * Request the url of the image last touched by the user. msg will be sent 2261 * to its target with a String representing the url as its object. 2262 * 2263 * @param msg This message will be dispatched with the result of the request 2264 * as the data member with "url" as key. The result can be null. 2265 */ 2266 public void requestImageRef(Message msg) { 2267 if (0 == mNativeClass) return; // client isn't initialized 2268 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2269 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2270 String ref = nativeImageURI(contentX, contentY); 2271 Bundle data = msg.getData(); 2272 data.putString("url", ref); 2273 msg.setData(data); 2274 msg.sendToTarget(); 2275 } 2276 2277 static int pinLoc(int x, int viewMax, int docMax) { 2278// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2279 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2280 // pin the short document to the top/left of the screen 2281 x = 0; 2282// Log.d(LOGTAG, "--- center " + x); 2283 } else if (x < 0) { 2284 x = 0; 2285// Log.d(LOGTAG, "--- zero"); 2286 } else if (x + viewMax > docMax) { 2287 x = docMax - viewMax; 2288// Log.d(LOGTAG, "--- pin " + x); 2289 } 2290 return x; 2291 } 2292 2293 // Expects x in view coordinates 2294 int pinLocX(int x) { 2295 if (mInOverScrollMode) return x; 2296 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2297 } 2298 2299 // Expects y in view coordinates 2300 int pinLocY(int y) { 2301 if (mInOverScrollMode) return y; 2302 return pinLoc(y, getViewHeightWithTitle(), 2303 computeRealVerticalScrollRange() + getTitleHeight()); 2304 } 2305 2306 /** 2307 * A title bar which is embedded in this WebView, and scrolls along with it 2308 * vertically, but not horizontally. 2309 */ 2310 private View mTitleBar; 2311 2312 /** 2313 * Add or remove a title bar to be embedded into the WebView, and scroll 2314 * along with it vertically, while remaining in view horizontally. Pass 2315 * null to remove the title bar from the WebView, and return to drawing 2316 * the WebView normally without translating to account for the title bar. 2317 * @hide 2318 */ 2319 public void setEmbeddedTitleBar(View v) { 2320 if (mTitleBar == v) return; 2321 if (mTitleBar != null) { 2322 removeView(mTitleBar); 2323 } 2324 if (null != v) { 2325 addView(v, new AbsoluteLayout.LayoutParams( 2326 ViewGroup.LayoutParams.MATCH_PARENT, 2327 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2328 } 2329 mTitleBar = v; 2330 } 2331 2332 /** 2333 * Given a distance in view space, convert it to content space. Note: this 2334 * does not reflect translation, just scaling, so this should not be called 2335 * with coordinates, but should be called for dimensions like width or 2336 * height. 2337 */ 2338 private int viewToContentDimension(int d) { 2339 return Math.round(d * mZoomManager.getInvScale()); 2340 } 2341 2342 /** 2343 * Given an x coordinate in view space, convert it to content space. Also 2344 * may be used for absolute heights (such as for the WebTextView's 2345 * textSize, which is unaffected by the height of the title bar). 2346 */ 2347 /*package*/ int viewToContentX(int x) { 2348 return viewToContentDimension(x); 2349 } 2350 2351 /** 2352 * Given a y coordinate in view space, convert it to content space. 2353 * Takes into account the height of the title bar if there is one 2354 * embedded into the WebView. 2355 */ 2356 /*package*/ int viewToContentY(int y) { 2357 return viewToContentDimension(y - getTitleHeight()); 2358 } 2359 2360 /** 2361 * Given a x coordinate in view space, convert it to content space. 2362 * Returns the result as a float. 2363 */ 2364 private float viewToContentXf(int x) { 2365 return x * mZoomManager.getInvScale(); 2366 } 2367 2368 /** 2369 * Given a y coordinate in view space, convert it to content space. 2370 * Takes into account the height of the title bar if there is one 2371 * embedded into the WebView. Returns the result as a float. 2372 */ 2373 private float viewToContentYf(int y) { 2374 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2375 } 2376 2377 /** 2378 * Given a distance in content space, convert it to view space. Note: this 2379 * does not reflect translation, just scaling, so this should not be called 2380 * with coordinates, but should be called for dimensions like width or 2381 * height. 2382 */ 2383 /*package*/ int contentToViewDimension(int d) { 2384 return Math.round(d * mZoomManager.getScale()); 2385 } 2386 2387 /** 2388 * Given an x coordinate in content space, convert it to view 2389 * space. 2390 */ 2391 /*package*/ int contentToViewX(int x) { 2392 return contentToViewDimension(x); 2393 } 2394 2395 /** 2396 * Given a y coordinate in content space, convert it to view 2397 * space. Takes into account the height of the title bar. 2398 */ 2399 /*package*/ int contentToViewY(int y) { 2400 return contentToViewDimension(y) + getTitleHeight(); 2401 } 2402 2403 private Rect contentToViewRect(Rect x) { 2404 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2405 contentToViewX(x.right), contentToViewY(x.bottom)); 2406 } 2407 2408 /* To invalidate a rectangle in content coordinates, we need to transform 2409 the rect into view coordinates, so we can then call invalidate(...). 2410 2411 Normally, we would just call contentToView[XY](...), which eventually 2412 calls Math.round(coordinate * mActualScale). However, for invalidates, 2413 we need to account for the slop that occurs with antialiasing. To 2414 address that, we are a little more liberal in the size of the rect that 2415 we invalidate. 2416 2417 This liberal calculation calls floor() for the top/left, and ceil() for 2418 the bottom/right coordinates. This catches the possible extra pixels of 2419 antialiasing that we might have missed with just round(). 2420 */ 2421 2422 // Called by JNI to invalidate the View, given rectangle coordinates in 2423 // content space 2424 private void viewInvalidate(int l, int t, int r, int b) { 2425 final float scale = mZoomManager.getScale(); 2426 final int dy = getTitleHeight(); 2427 invalidate((int)Math.floor(l * scale), 2428 (int)Math.floor(t * scale) + dy, 2429 (int)Math.ceil(r * scale), 2430 (int)Math.ceil(b * scale) + dy); 2431 } 2432 2433 // Called by JNI to invalidate the View after a delay, given rectangle 2434 // coordinates in content space 2435 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2436 final float scale = mZoomManager.getScale(); 2437 final int dy = getTitleHeight(); 2438 postInvalidateDelayed(delay, 2439 (int)Math.floor(l * scale), 2440 (int)Math.floor(t * scale) + dy, 2441 (int)Math.ceil(r * scale), 2442 (int)Math.ceil(b * scale) + dy); 2443 } 2444 2445 private void invalidateContentRect(Rect r) { 2446 viewInvalidate(r.left, r.top, r.right, r.bottom); 2447 } 2448 2449 // stop the scroll animation, and don't let a subsequent fling add 2450 // to the existing velocity 2451 private void abortAnimation() { 2452 mScroller.abortAnimation(); 2453 mLastVelocity = 0; 2454 } 2455 2456 /* call from webcoreview.draw(), so we're still executing in the UI thread 2457 */ 2458 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2459 2460 // premature data from webkit, ignore 2461 if ((w | h) == 0) { 2462 return; 2463 } 2464 2465 // don't abort a scroll animation if we didn't change anything 2466 if (mContentWidth != w || mContentHeight != h) { 2467 // record new dimensions 2468 mContentWidth = w; 2469 mContentHeight = h; 2470 // If history Picture is drawn, don't update scroll. They will be 2471 // updated when we get out of that mode. 2472 if (!mDrawHistory) { 2473 // repin our scroll, taking into account the new content size 2474 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2475 if (!mScroller.isFinished()) { 2476 // We are in the middle of a scroll. Repin the final scroll 2477 // position. 2478 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2479 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2480 } 2481 } 2482 } 2483 contentSizeChanged(updateLayout); 2484 } 2485 2486 // Used to avoid sending many visible rect messages. 2487 private Rect mLastVisibleRectSent; 2488 private Rect mLastGlobalRect; 2489 2490 Rect sendOurVisibleRect() { 2491 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2492 Rect rect = new Rect(); 2493 calcOurContentVisibleRect(rect); 2494 // Rect.equals() checks for null input. 2495 if (!rect.equals(mLastVisibleRectSent)) { 2496 Point pos = new Point(rect.left, rect.top); 2497 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2498 nativeMoveGeneration(), mUserScroll ? 1 : 0, pos); 2499 mLastVisibleRectSent = rect; 2500 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2501 } 2502 Rect globalRect = new Rect(); 2503 if (getGlobalVisibleRect(globalRect) 2504 && !globalRect.equals(mLastGlobalRect)) { 2505 if (DebugFlags.WEB_VIEW) { 2506 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2507 + globalRect.top + ",r=" + globalRect.right + ",b=" 2508 + globalRect.bottom); 2509 } 2510 // TODO: the global offset is only used by windowRect() 2511 // in ChromeClientAndroid ; other clients such as touch 2512 // and mouse events could return view + screen relative points. 2513 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2514 mLastGlobalRect = globalRect; 2515 } 2516 return rect; 2517 } 2518 2519 // Sets r to be the visible rectangle of our webview in view coordinates 2520 private void calcOurVisibleRect(Rect r) { 2521 Point p = new Point(); 2522 getGlobalVisibleRect(r, p); 2523 r.offset(-p.x, -p.y); 2524 } 2525 2526 // Sets r to be our visible rectangle in content coordinates 2527 private void calcOurContentVisibleRect(Rect r) { 2528 calcOurVisibleRect(r); 2529 r.left = viewToContentX(r.left); 2530 // viewToContentY will remove the total height of the title bar. Add 2531 // the visible height back in to account for the fact that if the title 2532 // bar is partially visible, the part of the visible rect which is 2533 // displaying our content is displaced by that amount. 2534 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2535 r.right = viewToContentX(r.right); 2536 r.bottom = viewToContentY(r.bottom); 2537 } 2538 2539 // Sets r to be our visible rectangle in content coordinates. We use this 2540 // method on the native side to compute the position of the fixed layers. 2541 // Uses floating coordinates (necessary to correctly place elements when 2542 // the scale factor is not 1) 2543 private void calcOurContentVisibleRectF(RectF r) { 2544 Rect ri = new Rect(0,0,0,0); 2545 calcOurVisibleRect(ri); 2546 r.left = viewToContentXf(ri.left); 2547 // viewToContentY will remove the total height of the title bar. Add 2548 // the visible height back in to account for the fact that if the title 2549 // bar is partially visible, the part of the visible rect which is 2550 // displaying our content is displaced by that amount. 2551 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2552 r.right = viewToContentXf(ri.right); 2553 r.bottom = viewToContentYf(ri.bottom); 2554 } 2555 2556 static class ViewSizeData { 2557 int mWidth; 2558 int mHeight; 2559 int mTextWrapWidth; 2560 int mAnchorX; 2561 int mAnchorY; 2562 float mScale; 2563 boolean mIgnoreHeight; 2564 } 2565 2566 /** 2567 * Compute unzoomed width and height, and if they differ from the last 2568 * values we sent, send them to webkit (to be used as new viewport) 2569 * 2570 * @param force ensures that the message is sent to webkit even if the width 2571 * or height has not changed since the last message 2572 * 2573 * @return true if new values were sent 2574 */ 2575 boolean sendViewSizeZoom(boolean force) { 2576 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2577 2578 int viewWidth = getViewWidth(); 2579 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2580 int newHeight = Math.round((getViewHeightWithTitle() - getTitleHeight()) * mZoomManager.getInvScale()); 2581 /* 2582 * Because the native side may have already done a layout before the 2583 * View system was able to measure us, we have to send a height of 0 to 2584 * remove excess whitespace when we grow our width. This will trigger a 2585 * layout and a change in content size. This content size change will 2586 * mean that contentSizeChanged will either call this method directly or 2587 * indirectly from onSizeChanged. 2588 */ 2589 if (newWidth > mLastWidthSent && mWrapContent) { 2590 newHeight = 0; 2591 } 2592 // Avoid sending another message if the dimensions have not changed. 2593 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force) { 2594 ViewSizeData data = new ViewSizeData(); 2595 data.mWidth = newWidth; 2596 data.mHeight = newHeight; 2597 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2598 data.mScale = mZoomManager.getScale(); 2599 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2600 && !mHeightCanMeasure; 2601 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2602 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2603 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2604 mLastWidthSent = newWidth; 2605 mLastHeightSent = newHeight; 2606 mZoomManager.clearDocumentAnchor(); 2607 return true; 2608 } 2609 return false; 2610 } 2611 2612 private int computeRealHorizontalScrollRange() { 2613 if (mDrawHistory) { 2614 return mHistoryWidth; 2615 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2616 && !mZoomManager.canZoomOut()) { 2617 // only honor the scrollbar mode when it is at minimum zoom level 2618 return computeHorizontalScrollExtent(); 2619 } else { 2620 // to avoid rounding error caused unnecessary scrollbar, use floor 2621 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2622 } 2623 } 2624 2625 @Override 2626 protected int computeHorizontalScrollRange() { 2627 int range = computeRealHorizontalScrollRange(); 2628 2629 // Adjust reported range if overscrolled to compress the scroll bars 2630 final int scrollX = mScrollX; 2631 final int overscrollRight = computeMaxScrollX(); 2632 if (scrollX < 0) { 2633 range -= scrollX; 2634 } else if (scrollX > overscrollRight) { 2635 range += scrollX - overscrollRight; 2636 } 2637 2638 return range; 2639 } 2640 2641 @Override 2642 protected int computeHorizontalScrollOffset() { 2643 return Math.max(mScrollX, 0); 2644 } 2645 2646 private int computeRealVerticalScrollRange() { 2647 if (mDrawHistory) { 2648 return mHistoryHeight; 2649 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2650 && !mZoomManager.canZoomOut()) { 2651 // only honor the scrollbar mode when it is at minimum zoom level 2652 return computeVerticalScrollExtent(); 2653 } else { 2654 // to avoid rounding error caused unnecessary scrollbar, use floor 2655 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2656 } 2657 } 2658 2659 @Override 2660 protected int computeVerticalScrollRange() { 2661 int range = computeRealVerticalScrollRange(); 2662 2663 // Adjust reported range if overscrolled to compress the scroll bars 2664 final int scrollY = mScrollY; 2665 final int overscrollBottom = computeMaxScrollY(); 2666 if (scrollY < 0) { 2667 range -= scrollY; 2668 } else if (scrollY > overscrollBottom) { 2669 range += scrollY - overscrollBottom; 2670 } 2671 2672 return range; 2673 } 2674 2675 @Override 2676 protected int computeVerticalScrollOffset() { 2677 return Math.max(mScrollY - getTitleHeight(), 0); 2678 } 2679 2680 @Override 2681 protected int computeVerticalScrollExtent() { 2682 return getViewHeight(); 2683 } 2684 2685 /** @hide */ 2686 @Override 2687 protected void onDrawVerticalScrollBar(Canvas canvas, 2688 Drawable scrollBar, 2689 int l, int t, int r, int b) { 2690 if (mScrollY < 0) { 2691 t -= mScrollY; 2692 } 2693 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2694 scrollBar.draw(canvas); 2695 } 2696 2697 @Override 2698 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2699 boolean clampedY) { 2700 // Special-case layer scrolling so that we do not trigger normal scroll 2701 // updating. 2702 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2703 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2704 mScrollingLayerRect.left = scrollX; 2705 mScrollingLayerRect.top = scrollY; 2706 invalidate(); 2707 return; 2708 } 2709 mInOverScrollMode = false; 2710 int maxX = computeMaxScrollX(); 2711 int maxY = computeMaxScrollY(); 2712 if (maxX == 0) { 2713 // do not over scroll x if the page just fits the screen 2714 scrollX = pinLocX(scrollX); 2715 } else if (scrollX < 0 || scrollX > maxX) { 2716 mInOverScrollMode = true; 2717 } 2718 if (scrollY < 0 || scrollY > maxY) { 2719 mInOverScrollMode = true; 2720 } 2721 2722 int oldX = mScrollX; 2723 int oldY = mScrollY; 2724 2725 super.scrollTo(scrollX, scrollY); 2726 2727 if (mOverScrollGlow != null) { 2728 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2729 } 2730 } 2731 2732 /** 2733 * Get the url for the current page. This is not always the same as the url 2734 * passed to WebViewClient.onPageStarted because although the load for 2735 * that url has begun, the current page may not have changed. 2736 * @return The url for the current page. 2737 */ 2738 public String getUrl() { 2739 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2740 return h != null ? h.getUrl() : null; 2741 } 2742 2743 /** 2744 * Get the original url for the current page. This is not always the same 2745 * as the url passed to WebViewClient.onPageStarted because although the 2746 * load for that url has begun, the current page may not have changed. 2747 * Also, there may have been redirects resulting in a different url to that 2748 * originally requested. 2749 * @return The url that was originally requested for the current page. 2750 */ 2751 public String getOriginalUrl() { 2752 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2753 return h != null ? h.getOriginalUrl() : null; 2754 } 2755 2756 /** 2757 * Get the title for the current page. This is the title of the current page 2758 * until WebViewClient.onReceivedTitle is called. 2759 * @return The title for the current page. 2760 */ 2761 public String getTitle() { 2762 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2763 return h != null ? h.getTitle() : null; 2764 } 2765 2766 /** 2767 * Get the favicon for the current page. This is the favicon of the current 2768 * page until WebViewClient.onReceivedIcon is called. 2769 * @return The favicon for the current page. 2770 */ 2771 public Bitmap getFavicon() { 2772 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2773 return h != null ? h.getFavicon() : null; 2774 } 2775 2776 /** 2777 * Get the touch icon url for the apple-touch-icon <link> element, or 2778 * a URL on this site's server pointing to the standard location of a 2779 * touch icon. 2780 * @hide 2781 */ 2782 public String getTouchIconUrl() { 2783 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2784 return h != null ? h.getTouchIconUrl() : null; 2785 } 2786 2787 /** 2788 * Get the progress for the current page. 2789 * @return The progress for the current page between 0 and 100. 2790 */ 2791 public int getProgress() { 2792 return mCallbackProxy.getProgress(); 2793 } 2794 2795 /** 2796 * @return the height of the HTML content. 2797 */ 2798 public int getContentHeight() { 2799 return mContentHeight; 2800 } 2801 2802 /** 2803 * @return the width of the HTML content. 2804 * @hide 2805 */ 2806 public int getContentWidth() { 2807 return mContentWidth; 2808 } 2809 2810 /** 2811 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2812 * is a global requests, not restricted to just this webview. This can be 2813 * useful if the application has been paused. 2814 */ 2815 public void pauseTimers() { 2816 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2817 } 2818 2819 /** 2820 * Resume all layout, parsing, and JavaScript timers for all webviews. 2821 * This will resume dispatching all timers. 2822 */ 2823 public void resumeTimers() { 2824 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2825 } 2826 2827 /** 2828 * Call this to pause any extra processing associated with this WebView and 2829 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2830 * is taken offscreen, this could be called to reduce unnecessary CPU or 2831 * network traffic. When the WebView is again "active", call onResume(). 2832 * 2833 * Note that this differs from pauseTimers(), which affects all WebViews. 2834 */ 2835 public void onPause() { 2836 if (!mIsPaused) { 2837 mIsPaused = true; 2838 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2839 } 2840 } 2841 2842 /** 2843 * Call this to resume a WebView after a previous call to onPause(). 2844 */ 2845 public void onResume() { 2846 if (mIsPaused) { 2847 mIsPaused = false; 2848 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2849 } 2850 } 2851 2852 /** 2853 * Returns true if the view is paused, meaning onPause() was called. Calling 2854 * onResume() sets the paused state back to false. 2855 * @hide 2856 */ 2857 public boolean isPaused() { 2858 return mIsPaused; 2859 } 2860 2861 /** 2862 * Call this to inform the view that memory is low so that it can 2863 * free any available memory. 2864 */ 2865 public void freeMemory() { 2866 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2867 } 2868 2869 /** 2870 * Clear the resource cache. Note that the cache is per-application, so 2871 * this will clear the cache for all WebViews used. 2872 * 2873 * @param includeDiskFiles If false, only the RAM cache is cleared. 2874 */ 2875 public void clearCache(boolean includeDiskFiles) { 2876 // Note: this really needs to be a static method as it clears cache for all 2877 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2878 // we can't make this static. 2879 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2880 includeDiskFiles ? 1 : 0, 0); 2881 } 2882 2883 /** 2884 * Make sure that clearing the form data removes the adapter from the 2885 * currently focused textfield if there is one. 2886 */ 2887 public void clearFormData() { 2888 if (inEditingMode()) { 2889 AutoCompleteAdapter adapter = null; 2890 mWebTextView.setAdapterCustom(adapter); 2891 } 2892 } 2893 2894 /** 2895 * Tell the WebView to clear its internal back/forward list. 2896 */ 2897 public void clearHistory() { 2898 mCallbackProxy.getBackForwardList().setClearPending(); 2899 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2900 } 2901 2902 /** 2903 * Clear the SSL preferences table stored in response to proceeding with SSL 2904 * certificate errors. 2905 */ 2906 public void clearSslPreferences() { 2907 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2908 } 2909 2910 /** 2911 * Return the WebBackForwardList for this WebView. This contains the 2912 * back/forward list for use in querying each item in the history stack. 2913 * This is a copy of the private WebBackForwardList so it contains only a 2914 * snapshot of the current state. Multiple calls to this method may return 2915 * different objects. The object returned from this method will not be 2916 * updated to reflect any new state. 2917 */ 2918 public WebBackForwardList copyBackForwardList() { 2919 return mCallbackProxy.getBackForwardList().clone(); 2920 } 2921 2922 /* 2923 * Highlight and scroll to the next occurance of String in findAll. 2924 * Wraps the page infinitely, and scrolls. Must be called after 2925 * calling findAll. 2926 * 2927 * @param forward Direction to search. 2928 */ 2929 public void findNext(boolean forward) { 2930 if (0 == mNativeClass) return; // client isn't initialized 2931 nativeFindNext(forward); 2932 } 2933 2934 /* 2935 * Find all instances of find on the page and highlight them. 2936 * @param find String to find. 2937 * @return int The number of occurances of the String "find" 2938 * that were found. 2939 */ 2940 public int findAll(String find) { 2941 if (0 == mNativeClass) return 0; // client isn't initialized 2942 int result = find != null ? nativeFindAll(find.toLowerCase(), 2943 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 2944 invalidate(); 2945 mLastFind = find; 2946 return result; 2947 } 2948 2949 /** 2950 * Start an ActionMode for finding text in this WebView. 2951 * @param text If non-null, will be the initial text to search for. 2952 * Otherwise, the last String searched for in this WebView will 2953 * be used to start. 2954 */ 2955 public void showFindDialog(String text) { 2956 mFindCallback = new FindActionModeCallback(mContext); 2957 setFindIsUp(true); 2958 mFindCallback.setWebView(this); 2959 View titleBar = mTitleBar; 2960 startActionMode(mFindCallback); 2961 if (text == null) { 2962 text = mLastFind; 2963 } 2964 if (text != null) { 2965 mFindCallback.setText(text); 2966 } 2967 } 2968 2969 /** 2970 * Keep track of the find callback so that we can remove its titlebar if 2971 * necessary. 2972 */ 2973 private FindActionModeCallback mFindCallback; 2974 2975 /** 2976 * Toggle whether the find dialog is showing, for both native and Java. 2977 */ 2978 private void setFindIsUp(boolean isUp) { 2979 mFindIsUp = isUp; 2980 if (0 == mNativeClass) return; // client isn't initialized 2981 nativeSetFindIsUp(isUp); 2982 } 2983 2984 /** 2985 * Return the index of the currently highlighted match. 2986 */ 2987 int findIndex() { 2988 if (0 == mNativeClass) return -1; 2989 return nativeFindIndex(); 2990 } 2991 2992 // Used to know whether the find dialog is open. Affects whether 2993 // or not we draw the highlights for matches. 2994 private boolean mFindIsUp; 2995 2996 // Keep track of the last string sent, so we can search again when find is 2997 // reopened. 2998 private String mLastFind; 2999 3000 /** 3001 * Return the first substring consisting of the address of a physical 3002 * location. Currently, only addresses in the United States are detected, 3003 * and consist of: 3004 * - a house number 3005 * - a street name 3006 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3007 * - a city name 3008 * - a state or territory, either spelled out or two-letter abbr. 3009 * - an optional 5 digit or 9 digit zip code. 3010 * 3011 * All names must be correctly capitalized, and the zip code, if present, 3012 * must be valid for the state. The street type must be a standard USPS 3013 * spelling or abbreviation. The state or territory must also be spelled 3014 * or abbreviated using USPS standards. The house number may not exceed 3015 * five digits. 3016 * @param addr The string to search for addresses. 3017 * 3018 * @return the address, or if no address is found, return null. 3019 */ 3020 public static String findAddress(String addr) { 3021 return findAddress(addr, false); 3022 } 3023 3024 /** 3025 * @hide 3026 * Return the first substring consisting of the address of a physical 3027 * location. Currently, only addresses in the United States are detected, 3028 * and consist of: 3029 * - a house number 3030 * - a street name 3031 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3032 * - a city name 3033 * - a state or territory, either spelled out or two-letter abbr. 3034 * - an optional 5 digit or 9 digit zip code. 3035 * 3036 * Names are optionally capitalized, and the zip code, if present, 3037 * must be valid for the state. The street type must be a standard USPS 3038 * spelling or abbreviation. The state or territory must also be spelled 3039 * or abbreviated using USPS standards. The house number may not exceed 3040 * five digits. 3041 * @param addr The string to search for addresses. 3042 * @param caseInsensitive addr Set to true to make search ignore case. 3043 * 3044 * @return the address, or if no address is found, return null. 3045 */ 3046 public static String findAddress(String addr, boolean caseInsensitive) { 3047 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3048 } 3049 3050 /* 3051 * Clear the highlighting surrounding text matches created by findAll. 3052 */ 3053 public void clearMatches() { 3054 if (mNativeClass == 0) 3055 return; 3056 nativeSetFindIsEmpty(); 3057 invalidate(); 3058 } 3059 3060 /** 3061 * Called when the find ActionMode ends. 3062 */ 3063 void notifyFindDialogDismissed() { 3064 mFindCallback = null; 3065 if (mWebViewCore == null) { 3066 return; 3067 } 3068 clearMatches(); 3069 setFindIsUp(false); 3070 // Now that the dialog has been removed, ensure that we scroll to a 3071 // location that is not beyond the end of the page. 3072 pinScrollTo(mScrollX, mScrollY, false, 0); 3073 invalidate(); 3074 } 3075 3076 /** 3077 * Query the document to see if it contains any image references. The 3078 * message object will be dispatched with arg1 being set to 1 if images 3079 * were found and 0 if the document does not reference any images. 3080 * @param response The message that will be dispatched with the result. 3081 */ 3082 public void documentHasImages(Message response) { 3083 if (response == null) { 3084 return; 3085 } 3086 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3087 } 3088 3089 /** 3090 * Request the scroller to abort any ongoing animation 3091 * 3092 * @hide 3093 */ 3094 public void stopScroll() { 3095 mScroller.forceFinished(true); 3096 mLastVelocity = 0; 3097 } 3098 3099 @Override 3100 public void computeScroll() { 3101 if (mScroller.computeScrollOffset()) { 3102 int oldX = mScrollX; 3103 int oldY = mScrollY; 3104 int x = mScroller.getCurrX(); 3105 int y = mScroller.getCurrY(); 3106 invalidate(); // So we draw again 3107 3108 if (!mScroller.isFinished()) { 3109 int rangeX = computeMaxScrollX(); 3110 int rangeY = computeMaxScrollY(); 3111 int overflingDistance = mOverflingDistance; 3112 3113 // Use the layer's scroll data if needed. 3114 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3115 oldX = mScrollingLayerRect.left; 3116 oldY = mScrollingLayerRect.top; 3117 rangeX = mScrollingLayerRect.right; 3118 rangeY = mScrollingLayerRect.bottom; 3119 // No overscrolling for layers. 3120 overflingDistance = 0; 3121 } 3122 3123 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3124 rangeX, rangeY, 3125 overflingDistance, overflingDistance, false); 3126 3127 if (mOverScrollGlow != null) { 3128 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3129 } 3130 } else { 3131 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3132 mScrollX = x; 3133 mScrollY = y; 3134 } else { 3135 // Update the layer position instead of WebView. 3136 nativeScrollLayer(mScrollingLayer, x, y); 3137 mScrollingLayerRect.left = x; 3138 mScrollingLayerRect.top = y; 3139 } 3140 abortAnimation(); 3141 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3142 WebViewCore.resumePriority(); 3143 if (!mSelectingText) { 3144 WebViewCore.resumeUpdatePicture(mWebViewCore); 3145 } 3146 } 3147 } else { 3148 super.computeScroll(); 3149 } 3150 } 3151 3152 private static int computeDuration(int dx, int dy) { 3153 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3154 int duration = distance * 1000 / STD_SPEED; 3155 return Math.min(duration, MAX_DURATION); 3156 } 3157 3158 // helper to pin the scrollBy parameters (already in view coordinates) 3159 // returns true if the scroll was changed 3160 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3161 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3162 } 3163 // helper to pin the scrollTo parameters (already in view coordinates) 3164 // returns true if the scroll was changed 3165 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3166 x = pinLocX(x); 3167 y = pinLocY(y); 3168 int dx = x - mScrollX; 3169 int dy = y - mScrollY; 3170 3171 if ((dx | dy) == 0) { 3172 return false; 3173 } 3174 abortAnimation(); 3175 if (animate) { 3176 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3177 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3178 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3179 awakenScrollBars(mScroller.getDuration()); 3180 invalidate(); 3181 } else { 3182 scrollTo(x, y); 3183 } 3184 return true; 3185 } 3186 3187 // Scale from content to view coordinates, and pin. 3188 // Also called by jni webview.cpp 3189 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3190 if (mDrawHistory) { 3191 // disallow WebView to change the scroll position as History Picture 3192 // is used in the view system. 3193 // TODO: as we switchOutDrawHistory when trackball or navigation 3194 // keys are hit, this should be safe. Right? 3195 return false; 3196 } 3197 cx = contentToViewDimension(cx); 3198 cy = contentToViewDimension(cy); 3199 if (mHeightCanMeasure) { 3200 // move our visible rect according to scroll request 3201 if (cy != 0) { 3202 Rect tempRect = new Rect(); 3203 calcOurVisibleRect(tempRect); 3204 tempRect.offset(cx, cy); 3205 requestRectangleOnScreen(tempRect); 3206 } 3207 // FIXME: We scroll horizontally no matter what because currently 3208 // ScrollView and ListView will not scroll horizontally. 3209 // FIXME: Why do we only scroll horizontally if there is no 3210 // vertical scroll? 3211// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3212 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3213 } else { 3214 return pinScrollBy(cx, cy, animate, 0); 3215 } 3216 } 3217 3218 /** 3219 * Called by CallbackProxy when the page starts loading. 3220 * @param url The URL of the page which has started loading. 3221 */ 3222 /* package */ void onPageStarted(String url) { 3223 // every time we start a new page, we want to reset the 3224 // WebView certificate: if the new site is secure, we 3225 // will reload it and get a new certificate set; 3226 // if the new site is not secure, the certificate must be 3227 // null, and that will be the case 3228 setCertificate(null); 3229 3230 // reset the flag since we set to true in if need after 3231 // loading is see onPageFinished(Url) 3232 mAccessibilityScriptInjected = false; 3233 } 3234 3235 /** 3236 * Called by CallbackProxy when the page finishes loading. 3237 * @param url The URL of the page which has finished loading. 3238 */ 3239 /* package */ void onPageFinished(String url) { 3240 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3241 // If the user is now on a different page, or has scrolled the page 3242 // past the point where the title bar is offscreen, ignore the 3243 // scroll request. 3244 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3245 && mScrollX == 0 && mScrollY == 0) { 3246 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3247 SLIDE_TITLE_DURATION); 3248 } 3249 mPageThatNeedsToSlideTitleBarOffScreen = null; 3250 } 3251 3252 injectAccessibilityForUrl(url); 3253 } 3254 3255 /** 3256 * This method injects accessibility in the loaded document if accessibility 3257 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3258 * If no URL specific script is found or JavaScript is disabled we fallback to 3259 * the default {@link AccessibilityInjector} implementation. 3260 * </p> 3261 * If the URL has the "axs" paramter set to 1 it has already done the 3262 * script injection so we do nothing. If the parameter is set to 0 3263 * the URL opts out accessibility script injection so we fall back to 3264 * the default {@link AccessibilityInjector}. 3265 * </p> 3266 * Note: If the user has not opted-in the accessibility script injection no scripts 3267 * are injected rather the default {@link AccessibilityInjector} implementation 3268 * is used. 3269 * 3270 * @param url The URL loaded by this {@link WebView}. 3271 */ 3272 private void injectAccessibilityForUrl(String url) { 3273 if (mWebViewCore == null) { 3274 return; 3275 } 3276 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3277 3278 if (!accessibilityManager.isEnabled()) { 3279 // it is possible that accessibility was turned off between reloads 3280 ensureAccessibilityScriptInjectorInstance(false); 3281 return; 3282 } 3283 3284 if (!getSettings().getJavaScriptEnabled()) { 3285 // no JS so we fallback to the basic buil-in support 3286 ensureAccessibilityScriptInjectorInstance(true); 3287 return; 3288 } 3289 3290 // check the URL "axs" parameter to choose appropriate action 3291 int axsParameterValue = getAxsUrlParameterValue(url); 3292 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3293 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3294 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3295 if (onDeviceScriptInjectionEnabled) { 3296 ensureAccessibilityScriptInjectorInstance(false); 3297 // neither script injected nor script injection opted out => we inject 3298 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3299 // TODO: Set this flag after successfull script injection. Maybe upon injection 3300 // the chooser should update the meta tag and we check it to declare success 3301 mAccessibilityScriptInjected = true; 3302 } else { 3303 // injection disabled so we fallback to the basic built-in support 3304 ensureAccessibilityScriptInjectorInstance(true); 3305 } 3306 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3307 // injection opted out so we fallback to the basic buil-in support 3308 ensureAccessibilityScriptInjectorInstance(true); 3309 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3310 ensureAccessibilityScriptInjectorInstance(false); 3311 // the URL provides accessibility but we still need to add our generic script 3312 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3313 } else { 3314 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3315 } 3316 } 3317 3318 /** 3319 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3320 * 3321 * @param present True to ensure an insance, false to ensure no instance. 3322 */ 3323 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3324 if (present) { 3325 if (mAccessibilityInjector == null) { 3326 mAccessibilityInjector = new AccessibilityInjector(this); 3327 } 3328 } else { 3329 mAccessibilityInjector = null; 3330 } 3331 } 3332 3333 /** 3334 * Gets the "axs" URL parameter value. 3335 * 3336 * @param url A url to fetch the paramter from. 3337 * @return The parameter value if such, -1 otherwise. 3338 */ 3339 private int getAxsUrlParameterValue(String url) { 3340 if (mMatchAxsUrlParameterPattern == null) { 3341 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3342 } 3343 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3344 if (matcher.find()) { 3345 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3346 return Integer.parseInt(keyValuePair.split("=")[1]); 3347 } 3348 return -1; 3349 } 3350 3351 /** 3352 * The URL of a page that sent a message to scroll the title bar off screen. 3353 * 3354 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3355 * title bar off the screen. Sometimes, the scroll position is set before 3356 * the page finishes loading. Rather than scrolling while the page is still 3357 * loading, keep track of the URL and new scroll position so we can perform 3358 * the scroll once the page finishes loading. 3359 */ 3360 private String mPageThatNeedsToSlideTitleBarOffScreen; 3361 3362 /** 3363 * The destination Y scroll position to be used when the page finishes 3364 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3365 */ 3366 private int mYDistanceToSlideTitleOffScreen; 3367 3368 // scale from content to view coordinates, and pin 3369 // return true if pin caused the final x/y different than the request cx/cy, 3370 // and a future scroll may reach the request cx/cy after our size has 3371 // changed 3372 // return false if the view scroll to the exact position as it is requested, 3373 // where negative numbers are taken to mean 0 3374 private boolean setContentScrollTo(int cx, int cy) { 3375 if (mDrawHistory) { 3376 // disallow WebView to change the scroll position as History Picture 3377 // is used in the view system. 3378 // One known case where this is called is that WebCore tries to 3379 // restore the scroll position. As history Picture already uses the 3380 // saved scroll position, it is ok to skip this. 3381 return false; 3382 } 3383 int vx; 3384 int vy; 3385 if ((cx | cy) == 0) { 3386 // If the page is being scrolled to (0,0), do not add in the title 3387 // bar's height, and simply scroll to (0,0). (The only other work 3388 // in contentToView_ is to multiply, so this would not change 0.) 3389 vx = 0; 3390 vy = 0; 3391 } else { 3392 vx = contentToViewX(cx); 3393 vy = contentToViewY(cy); 3394 } 3395// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3396// vx + " " + vy + "]"); 3397 // Some mobile sites attempt to scroll the title bar off the page by 3398 // scrolling to (0,1). If we are at the top left corner of the 3399 // page, assume this is an attempt to scroll off the title bar, and 3400 // animate the title bar off screen slowly enough that the user can see 3401 // it. 3402 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3403 && mTitleBar != null) { 3404 // FIXME: 100 should be defined somewhere as our max progress. 3405 if (getProgress() < 100) { 3406 // Wait to scroll the title bar off screen until the page has 3407 // finished loading. Keep track of the URL and the destination 3408 // Y position 3409 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3410 mYDistanceToSlideTitleOffScreen = vy; 3411 } else { 3412 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3413 } 3414 // Since we are animating, we have not yet reached the desired 3415 // scroll position. Do not return true to request another attempt 3416 return false; 3417 } 3418 pinScrollTo(vx, vy, false, 0); 3419 // If the request was to scroll to a negative coordinate, treat it as if 3420 // it was a request to scroll to 0 3421 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3422 return true; 3423 } else { 3424 return false; 3425 } 3426 } 3427 3428 // scale from content to view coordinates, and pin 3429 private void spawnContentScrollTo(int cx, int cy) { 3430 if (mDrawHistory) { 3431 // disallow WebView to change the scroll position as History Picture 3432 // is used in the view system. 3433 return; 3434 } 3435 int vx = contentToViewX(cx); 3436 int vy = contentToViewY(cy); 3437 pinScrollTo(vx, vy, true, 0); 3438 } 3439 3440 /** 3441 * These are from webkit, and are in content coordinate system (unzoomed) 3442 */ 3443 private void contentSizeChanged(boolean updateLayout) { 3444 // suppress 0,0 since we usually see real dimensions soon after 3445 // this avoids drawing the prev content in a funny place. If we find a 3446 // way to consolidate these notifications, this check may become 3447 // obsolete 3448 if ((mContentWidth | mContentHeight) == 0) { 3449 return; 3450 } 3451 3452 if (mHeightCanMeasure) { 3453 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3454 || updateLayout) { 3455 requestLayout(); 3456 } 3457 } else if (mWidthCanMeasure) { 3458 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3459 || updateLayout) { 3460 requestLayout(); 3461 } 3462 } else { 3463 // If we don't request a layout, try to send our view size to the 3464 // native side to ensure that WebCore has the correct dimensions. 3465 sendViewSizeZoom(false); 3466 } 3467 } 3468 3469 /** 3470 * Set the WebViewClient that will receive various notifications and 3471 * requests. This will replace the current handler. 3472 * @param client An implementation of WebViewClient. 3473 */ 3474 public void setWebViewClient(WebViewClient client) { 3475 mCallbackProxy.setWebViewClient(client); 3476 } 3477 3478 /** 3479 * Gets the WebViewClient 3480 * @return the current WebViewClient instance. 3481 * 3482 *@hide pending API council approval. 3483 */ 3484 public WebViewClient getWebViewClient() { 3485 return mCallbackProxy.getWebViewClient(); 3486 } 3487 3488 /** 3489 * Register the interface to be used when content can not be handled by 3490 * the rendering engine, and should be downloaded instead. This will replace 3491 * the current handler. 3492 * @param listener An implementation of DownloadListener. 3493 */ 3494 public void setDownloadListener(DownloadListener listener) { 3495 mCallbackProxy.setDownloadListener(listener); 3496 } 3497 3498 /** 3499 * Set the chrome handler. This is an implementation of WebChromeClient for 3500 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3501 * This will replace the current handler. 3502 * @param client An implementation of WebChromeClient. 3503 */ 3504 public void setWebChromeClient(WebChromeClient client) { 3505 mCallbackProxy.setWebChromeClient(client); 3506 } 3507 3508 /** 3509 * Gets the chrome handler. 3510 * @return the current WebChromeClient instance. 3511 * 3512 * @hide API council approval. 3513 */ 3514 public WebChromeClient getWebChromeClient() { 3515 return mCallbackProxy.getWebChromeClient(); 3516 } 3517 3518 /** 3519 * Set the back/forward list client. This is an implementation of 3520 * WebBackForwardListClient for handling new items and changes in the 3521 * history index. 3522 * @param client An implementation of WebBackForwardListClient. 3523 * {@hide} 3524 */ 3525 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3526 mCallbackProxy.setWebBackForwardListClient(client); 3527 } 3528 3529 /** 3530 * Gets the WebBackForwardListClient. 3531 * {@hide} 3532 */ 3533 public WebBackForwardListClient getWebBackForwardListClient() { 3534 return mCallbackProxy.getWebBackForwardListClient(); 3535 } 3536 3537 /** 3538 * Set the Picture listener. This is an interface used to receive 3539 * notifications of a new Picture. 3540 * @param listener An implementation of WebView.PictureListener. 3541 */ 3542 public void setPictureListener(PictureListener listener) { 3543 mPictureListener = listener; 3544 } 3545 3546 /** 3547 * {@hide} 3548 */ 3549 /* FIXME: Debug only! Remove for SDK! */ 3550 public void externalRepresentation(Message callback) { 3551 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3552 } 3553 3554 /** 3555 * {@hide} 3556 */ 3557 /* FIXME: Debug only! Remove for SDK! */ 3558 public void documentAsText(Message callback) { 3559 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3560 } 3561 3562 /** 3563 * Use this function to bind an object to JavaScript so that the 3564 * methods can be accessed from JavaScript. 3565 * <p><strong>IMPORTANT:</strong> 3566 * <ul> 3567 * <li> Using addJavascriptInterface() allows JavaScript to control your 3568 * application. This can be a very useful feature or a dangerous security 3569 * issue. When the HTML in the WebView is untrustworthy (for example, part 3570 * or all of the HTML is provided by some person or process), then an 3571 * attacker could inject HTML that will execute your code and possibly any 3572 * code of the attacker's choosing.<br> 3573 * Do not use addJavascriptInterface() unless all of the HTML in this 3574 * WebView was written by you.</li> 3575 * <li> The Java object that is bound runs in another thread and not in 3576 * the thread that it was constructed in.</li> 3577 * </ul></p> 3578 * @param obj The class instance to bind to JavaScript, null instances are 3579 * ignored. 3580 * @param interfaceName The name to used to expose the instance in 3581 * JavaScript. 3582 */ 3583 public void addJavascriptInterface(Object obj, String interfaceName) { 3584 if (obj == null) { 3585 return; 3586 } 3587 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3588 arg.mObject = obj; 3589 arg.mInterfaceName = interfaceName; 3590 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3591 } 3592 3593 /** 3594 * Removes a previously added JavaScript interface with the given name. 3595 * @param interfaceName The name of the interface to remove. 3596 */ 3597 public void removeJavascriptInterface(String interfaceName) { 3598 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3599 arg.mInterfaceName = interfaceName; 3600 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3601 } 3602 3603 /** 3604 * Return the WebSettings object used to control the settings for this 3605 * WebView. 3606 * @return A WebSettings object that can be used to control this WebView's 3607 * settings. 3608 */ 3609 public WebSettings getSettings() { 3610 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3611 } 3612 3613 /** 3614 * Return the list of currently loaded plugins. 3615 * @return The list of currently loaded plugins. 3616 * 3617 * @deprecated This was used for Gears, which has been deprecated. 3618 */ 3619 @Deprecated 3620 public static synchronized PluginList getPluginList() { 3621 return new PluginList(); 3622 } 3623 3624 /** 3625 * @deprecated This was used for Gears, which has been deprecated. 3626 */ 3627 @Deprecated 3628 public void refreshPlugins(boolean reloadOpenPages) { } 3629 3630 //------------------------------------------------------------------------- 3631 // Override View methods 3632 //------------------------------------------------------------------------- 3633 3634 @Override 3635 protected void finalize() throws Throwable { 3636 try { 3637 destroy(); 3638 } finally { 3639 super.finalize(); 3640 } 3641 } 3642 3643 @Override 3644 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3645 if (child == mTitleBar) { 3646 // When drawing the title bar, move it horizontally to always show 3647 // at the top of the WebView. 3648 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3649 int newTop = Math.min(0, mScrollY); 3650 mTitleBar.setBottom(newTop + getTitleHeight()); 3651 mTitleBar.setTop(newTop); 3652 } 3653 return super.drawChild(canvas, child, drawingTime); 3654 } 3655 3656 private void drawContent(Canvas canvas) { 3657 // Update the buttons in the picture, so when we draw the picture 3658 // to the screen, they are in the correct state. 3659 // Tell the native side if user is a) touching the screen, 3660 // b) pressing the trackball down, or c) pressing the enter key 3661 // If the cursor is on a button, we need to draw it in the pressed 3662 // state. 3663 // If mNativeClass is 0, we should not reach here, so we do not 3664 // need to check it again. 3665 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3666 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3667 || mTrackballDown || mGotCenterDown, false); 3668 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3669 } 3670 3671 /** 3672 * Draw the background when beyond bounds 3673 * @param canvas Canvas to draw into 3674 */ 3675 private void drawOverScrollBackground(Canvas canvas) { 3676 if (mOverScrollBackground == null) { 3677 mOverScrollBackground = new Paint(); 3678 Bitmap bm = BitmapFactory.decodeResource( 3679 mContext.getResources(), 3680 com.android.internal.R.drawable.status_bar_background); 3681 mOverScrollBackground.setShader(new BitmapShader(bm, 3682 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3683 mOverScrollBorder = new Paint(); 3684 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3685 mOverScrollBorder.setStrokeWidth(0); 3686 mOverScrollBorder.setColor(0xffbbbbbb); 3687 } 3688 3689 int top = 0; 3690 int right = computeRealHorizontalScrollRange(); 3691 int bottom = top + computeRealVerticalScrollRange(); 3692 // first draw the background and anchor to the top of the view 3693 canvas.save(); 3694 canvas.translate(mScrollX, mScrollY); 3695 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3696 - mScrollY, Region.Op.DIFFERENCE); 3697 canvas.drawPaint(mOverScrollBackground); 3698 canvas.restore(); 3699 // then draw the border 3700 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3701 // next clip the region for the content 3702 canvas.clipRect(0, top, right, bottom); 3703 } 3704 3705 @Override 3706 protected void onDraw(Canvas canvas) { 3707 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3708 if (mNativeClass == 0) { 3709 return; 3710 } 3711 3712 // if both mContentWidth and mContentHeight are 0, it means there is no 3713 // valid Picture passed to WebView yet. This can happen when WebView 3714 // just starts. Draw the background and return. 3715 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3716 canvas.drawColor(mBackgroundColor); 3717 return; 3718 } 3719 3720 int saveCount = canvas.save(); 3721 if (mInOverScrollMode && !getSettings() 3722 .getUseWebViewBackgroundForOverscrollBackground()) { 3723 drawOverScrollBackground(canvas); 3724 } 3725 if (mTitleBar != null) { 3726 canvas.translate(0, (int) mTitleBar.getHeight()); 3727 } 3728 drawContent(canvas); 3729 canvas.restoreToCount(saveCount); 3730 3731 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3732 invalidate(); 3733 } 3734 if (inEditingMode()) { 3735 mWebTextView.onDrawSubstitute(); 3736 } 3737 mWebViewCore.signalRepaintDone(); 3738 3739 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3740 invalidate(); 3741 } 3742 3743 // paint the highlight in the end 3744 if (!mTouchHighlightRegion.isEmpty()) { 3745 if (mTouchHightlightPaint == null) { 3746 mTouchHightlightPaint = new Paint(); 3747 mTouchHightlightPaint.setColor(mHightlightColor); 3748 mTouchHightlightPaint.setAntiAlias(true); 3749 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3750 TOUCH_HIGHLIGHT_ARC)); 3751 } 3752 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3753 mTouchHightlightPaint); 3754 } 3755 if (DEBUG_TOUCH_HIGHLIGHT) { 3756 if (getSettings().getNavDump()) { 3757 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3758 if (mTouchCrossHairColor == null) { 3759 mTouchCrossHairColor = new Paint(); 3760 mTouchCrossHairColor.setColor(Color.RED); 3761 } 3762 canvas.drawLine(mTouchHighlightX - mNavSlop, 3763 mTouchHighlightY - mNavSlop, mTouchHighlightX 3764 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3765 + 1, mTouchCrossHairColor); 3766 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3767 mTouchHighlightY - mNavSlop, mTouchHighlightX 3768 - mNavSlop, 3769 mTouchHighlightY + mNavSlop + 1, 3770 mTouchCrossHairColor); 3771 } 3772 } 3773 } 3774 } 3775 3776 private void removeTouchHighlight(boolean removePendingMessage) { 3777 if (removePendingMessage) { 3778 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3779 } 3780 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3781 } 3782 3783 @Override 3784 public void setLayoutParams(ViewGroup.LayoutParams params) { 3785 if (params.height == LayoutParams.WRAP_CONTENT) { 3786 mWrapContent = true; 3787 } 3788 super.setLayoutParams(params); 3789 } 3790 3791 @Override 3792 public boolean performLongClick() { 3793 // performLongClick() is the result of a delayed message. If we switch 3794 // to windows overview, the WebView will be temporarily removed from the 3795 // view system. In that case, do nothing. 3796 if (getParent() == null) return false; 3797 3798 // A multi-finger gesture can look like a long press; make sure we don't take 3799 // long press actions if we're scaling. 3800 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3801 if (detector != null && detector.isInProgress()) { 3802 return false; 3803 } 3804 3805 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3806 // Send the click so that the textfield is in focus 3807 centerKeyPressOnTextField(); 3808 rebuildWebTextView(); 3809 } else { 3810 clearTextEntry(); 3811 } 3812 if (inEditingMode()) { 3813 // Since we just called rebuildWebTextView, the layout is not set 3814 // properly. Update it so it can correctly find the word to select. 3815 mWebTextView.ensureLayout(); 3816 // Provide a touch down event to WebTextView, which will allow it 3817 // to store the location to use in performLongClick. 3818 AbsoluteLayout.LayoutParams params 3819 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3820 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3821 mLastTouchTime, MotionEvent.ACTION_DOWN, 3822 mLastTouchX - params.x + mScrollX, 3823 mLastTouchY - params.y + mScrollY, 0); 3824 mWebTextView.dispatchTouchEvent(fake); 3825 return mWebTextView.performLongClick(); 3826 } 3827 if (mSelectingText) return false; // long click does nothing on selection 3828 /* if long click brings up a context menu, the super function 3829 * returns true and we're done. Otherwise, nothing happened when 3830 * the user clicked. */ 3831 if (super.performLongClick()) { 3832 return true; 3833 } 3834 /* In the case where the application hasn't already handled the long 3835 * click action, look for a word under the click. If one is found, 3836 * animate the text selection into view. 3837 * FIXME: no animation code yet */ 3838 return selectText(); 3839 } 3840 3841 /** 3842 * Select the word at the last click point. 3843 * 3844 * @hide pending API council approval 3845 */ 3846 public boolean selectText() { 3847 int x = viewToContentX((int) mLastTouchX + mScrollX); 3848 int y = viewToContentY((int) mLastTouchY + mScrollY); 3849 return selectText(x, y); 3850 } 3851 3852 /** 3853 * Select the word at the indicated content coordinates. 3854 */ 3855 boolean selectText(int x, int y) { 3856 if (!setUpSelect()) { 3857 return false; 3858 } 3859 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3860 nativeSetExtendSelection(); 3861 mDrawSelectionPointer = false; 3862 mSelectionStarted = true; 3863 mTouchMode = TOUCH_DRAG_MODE; 3864 return true; 3865 } 3866 selectionDone(); 3867 return false; 3868 } 3869 3870 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3871 3872 @Override 3873 protected void onConfigurationChanged(Configuration newConfig) { 3874 if (mSelectingText && mOrientation != newConfig.orientation) { 3875 selectionDone(); 3876 } 3877 mOrientation = newConfig.orientation; 3878 } 3879 3880 /** 3881 * Keep track of the Callback so we can end its ActionMode or remove its 3882 * titlebar. 3883 */ 3884 private SelectActionModeCallback mSelectCallback; 3885 3886 // These values are possible options for didUpdateWebTextViewDimensions. 3887 private static final int FULLY_ON_SCREEN = 0; 3888 private static final int INTERSECTS_SCREEN = 1; 3889 private static final int ANYWHERE = 2; 3890 3891 /** 3892 * Check to see if the focused textfield/textarea is still on screen. If it 3893 * is, update the the dimensions and location of WebTextView. Otherwise, 3894 * remove the WebTextView. Should be called when the zoom level changes. 3895 * @param intersection How to determine whether the textfield/textarea is 3896 * still on screen. 3897 * @return boolean True if the textfield/textarea is still on screen and the 3898 * dimensions/location of WebTextView have been updated. 3899 */ 3900 private boolean didUpdateWebTextViewDimensions(int intersection) { 3901 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3902 Rect vBox = contentToViewRect(contentBounds); 3903 Rect visibleRect = new Rect(); 3904 calcOurVisibleRect(visibleRect); 3905 // If the textfield is on screen, place the WebTextView in 3906 // its new place, accounting for our new scroll/zoom values, 3907 // and adjust its textsize. 3908 boolean onScreen; 3909 switch (intersection) { 3910 case FULLY_ON_SCREEN: 3911 onScreen = visibleRect.contains(vBox); 3912 break; 3913 case INTERSECTS_SCREEN: 3914 onScreen = Rect.intersects(visibleRect, vBox); 3915 break; 3916 case ANYWHERE: 3917 onScreen = true; 3918 break; 3919 default: 3920 throw new AssertionError( 3921 "invalid parameter passed to didUpdateWebTextViewDimensions"); 3922 } 3923 if (onScreen) { 3924 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3925 vBox.height()); 3926 mWebTextView.updateTextSize(); 3927 updateWebTextViewPadding(); 3928 return true; 3929 } else { 3930 // The textfield is now off screen. The user probably 3931 // was not zooming to see the textfield better. Remove 3932 // the WebTextView. If the user types a key, and the 3933 // textfield is still in focus, we will reconstruct 3934 // the WebTextView and scroll it back on screen. 3935 mWebTextView.remove(); 3936 return false; 3937 } 3938 } 3939 3940 void setBaseLayer(int layer, Rect invalRect) { 3941 if (mNativeClass == 0) 3942 return; 3943 if (invalRect == null) { 3944 Rect rect = new Rect(0, 0, mContentWidth, mContentHeight); 3945 nativeSetBaseLayer(layer, rect); 3946 } else { 3947 nativeSetBaseLayer(layer, invalRect); 3948 } 3949 } 3950 3951 private void onZoomAnimationStart() { 3952 // If it is in password mode, turn it off so it does not draw misplaced. 3953 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3954 mWebTextView.setInPassword(false); 3955 } 3956 } 3957 3958 private void onZoomAnimationEnd() { 3959 // adjust the edit text view if needed 3960 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 3961 && nativeFocusCandidateIsPassword()) { 3962 // If it is a password field, start drawing the WebTextView once 3963 // again. 3964 mWebTextView.setInPassword(true); 3965 } 3966 } 3967 3968 void onFixedLengthZoomAnimationStart() { 3969 WebViewCore.pauseUpdatePicture(getWebViewCore()); 3970 onZoomAnimationStart(); 3971 } 3972 3973 void onFixedLengthZoomAnimationEnd() { 3974 if (!mSelectingText) { 3975 WebViewCore.resumeUpdatePicture(mWebViewCore); 3976 } 3977 onZoomAnimationEnd(); 3978 } 3979 3980 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 3981 Paint.DITHER_FLAG | 3982 Paint.SUBPIXEL_TEXT_FLAG; 3983 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 3984 Paint.DITHER_FLAG; 3985 3986 private final DrawFilter mZoomFilter = 3987 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 3988 // If we need to trade better quality for speed, set mScrollFilter to null 3989 private final DrawFilter mScrollFilter = 3990 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 3991 3992 private void drawCoreAndCursorRing(Canvas canvas, int color, 3993 boolean drawCursorRing) { 3994 if (mDrawHistory) { 3995 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3996 canvas.drawPicture(mHistoryPicture); 3997 return; 3998 } 3999 if (mNativeClass == 0) return; 4000 4001 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4002 boolean animateScroll = ((!mScroller.isFinished() 4003 || mVelocityTracker != null) 4004 && (mTouchMode != TOUCH_DRAG_MODE || 4005 mHeldMotionless != MOTIONLESS_TRUE)) 4006 || mDeferTouchMode == TOUCH_DRAG_MODE; 4007 if (mTouchMode == TOUCH_DRAG_MODE) { 4008 if (mHeldMotionless == MOTIONLESS_PENDING) { 4009 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4010 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4011 mHeldMotionless = MOTIONLESS_FALSE; 4012 } 4013 if (mHeldMotionless == MOTIONLESS_FALSE) { 4014 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4015 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4016 mHeldMotionless = MOTIONLESS_PENDING; 4017 } 4018 } 4019 if (animateZoom) { 4020 mZoomManager.animateZoom(canvas); 4021 } else { 4022 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4023 } 4024 4025 boolean UIAnimationsRunning = false; 4026 // Currently for each draw we compute the animation values; 4027 // We may in the future decide to do that independently. 4028 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4029 UIAnimationsRunning = true; 4030 // If we have unfinished (or unstarted) animations, 4031 // we ask for a repaint. 4032 invalidate(); 4033 } 4034 4035 // decide which adornments to draw 4036 int extras = DRAW_EXTRAS_NONE; 4037 if (mFindIsUp) { 4038 extras = DRAW_EXTRAS_FIND; 4039 } else if (mSelectingText) { 4040 extras = DRAW_EXTRAS_SELECTION; 4041 nativeSetSelectionPointer(mDrawSelectionPointer, 4042 mZoomManager.getInvScale(), 4043 mSelectX, mSelectY - getTitleHeight()); 4044 } else if (drawCursorRing) { 4045 extras = DRAW_EXTRAS_CURSOR_RING; 4046 } 4047 if (DebugFlags.WEB_VIEW) { 4048 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4049 + " mSelectingText=" + mSelectingText 4050 + " nativePageShouldHandleShiftAndArrows()=" 4051 + nativePageShouldHandleShiftAndArrows() 4052 + " animateZoom=" + animateZoom 4053 + " extras=" + extras); 4054 } 4055 4056 if (canvas.isHardwareAccelerated()) { 4057 try { 4058 if (canvas.acquireContext()) { 4059 Rect rect = new Rect(mGLRectViewport.left, 4060 mGLRectViewport.top, 4061 mGLRectViewport.right, 4062 mGLRectViewport.bottom 4063 - getVisibleTitleHeight()); 4064 if (nativeDrawGL(rect, getScale(), extras)) { 4065 invalidate(); 4066 } 4067 } 4068 } finally { 4069 canvas.releaseContext(); 4070 } 4071 } else { 4072 DrawFilter df = null; 4073 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4074 df = mZoomFilter; 4075 } else if (animateScroll) { 4076 df = mScrollFilter; 4077 } 4078 canvas.setDrawFilter(df); 4079 int content = nativeDraw(canvas, color, extras, true); 4080 canvas.setDrawFilter(null); 4081 if (content != 0) { 4082 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4083 } 4084 } 4085 4086 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4087 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4088 mTouchMode = TOUCH_SHORTPRESS_MODE; 4089 } 4090 } 4091 if (mFocusSizeChanged) { 4092 mFocusSizeChanged = false; 4093 // If we are zooming, this will get handled above, when the zoom 4094 // finishes. We also do not need to do this unless the WebTextView 4095 // is showing. 4096 if (!animateZoom && inEditingMode()) { 4097 didUpdateWebTextViewDimensions(ANYWHERE); 4098 } 4099 } 4100 } 4101 4102 // draw history 4103 private boolean mDrawHistory = false; 4104 private Picture mHistoryPicture = null; 4105 private int mHistoryWidth = 0; 4106 private int mHistoryHeight = 0; 4107 4108 // Only check the flag, can be called from WebCore thread 4109 boolean drawHistory() { 4110 return mDrawHistory; 4111 } 4112 4113 int getHistoryPictureWidth() { 4114 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4115 } 4116 4117 // Should only be called in UI thread 4118 void switchOutDrawHistory() { 4119 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4120 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4121 mDrawHistory = false; 4122 mHistoryPicture = null; 4123 invalidate(); 4124 int oldScrollX = mScrollX; 4125 int oldScrollY = mScrollY; 4126 mScrollX = pinLocX(mScrollX); 4127 mScrollY = pinLocY(mScrollY); 4128 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4129 mUserScroll = false; 4130 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 4131 oldScrollY); 4132 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4133 } else { 4134 sendOurVisibleRect(); 4135 } 4136 } 4137 } 4138 4139 WebViewCore.CursorData cursorData() { 4140 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4141 result.mMoveGeneration = nativeMoveGeneration(); 4142 result.mFrame = nativeCursorFramePointer(); 4143 Point position = nativeCursorPosition(); 4144 result.mX = position.x; 4145 result.mY = position.y; 4146 return result; 4147 } 4148 4149 /** 4150 * Delete text from start to end in the focused textfield. If there is no 4151 * focus, or if start == end, silently fail. If start and end are out of 4152 * order, swap them. 4153 * @param start Beginning of selection to delete. 4154 * @param end End of selection to delete. 4155 */ 4156 /* package */ void deleteSelection(int start, int end) { 4157 mTextGeneration++; 4158 WebViewCore.TextSelectionData data 4159 = new WebViewCore.TextSelectionData(start, end); 4160 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4161 data); 4162 } 4163 4164 /** 4165 * Set the selection to (start, end) in the focused textfield. If start and 4166 * end are out of order, swap them. 4167 * @param start Beginning of selection. 4168 * @param end End of selection. 4169 */ 4170 /* package */ void setSelection(int start, int end) { 4171 if (mWebViewCore != null) { 4172 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4173 } 4174 } 4175 4176 @Override 4177 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4178 InputConnection connection = super.onCreateInputConnection(outAttrs); 4179 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4180 return connection; 4181 } 4182 4183 /** 4184 * Called in response to a message from webkit telling us that the soft 4185 * keyboard should be launched. 4186 */ 4187 private void displaySoftKeyboard(boolean isTextView) { 4188 InputMethodManager imm = (InputMethodManager) 4189 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4190 4191 // bring it back to the default level scale so that user can enter text 4192 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4193 if (zoom) { 4194 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4195 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4196 } 4197 if (isTextView) { 4198 rebuildWebTextView(); 4199 if (inEditingMode()) { 4200 imm.showSoftInput(mWebTextView, 0); 4201 if (zoom) { 4202 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4203 } 4204 return; 4205 } 4206 } 4207 // Used by plugins and contentEditable. 4208 // Also used if the navigation cache is out of date, and 4209 // does not recognize that a textfield is in focus. In that 4210 // case, use WebView as the targeted view. 4211 // see http://b/issue?id=2457459 4212 imm.showSoftInput(this, 0); 4213 } 4214 4215 // Called by WebKit to instruct the UI to hide the keyboard 4216 private void hideSoftKeyboard() { 4217 InputMethodManager imm = InputMethodManager.peekInstance(); 4218 if (imm != null && (imm.isActive(this) 4219 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4220 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4221 } 4222 } 4223 4224 /* 4225 * This method checks the current focus and cursor and potentially rebuilds 4226 * mWebTextView to have the appropriate properties, such as password, 4227 * multiline, and what text it contains. It also removes it if necessary. 4228 */ 4229 /* package */ void rebuildWebTextView() { 4230 // If the WebView does not have focus, do nothing until it gains focus. 4231 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4232 return; 4233 } 4234 boolean alreadyThere = inEditingMode(); 4235 // inEditingMode can only return true if mWebTextView is non-null, 4236 // so we can safely call remove() if (alreadyThere) 4237 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4238 if (alreadyThere) { 4239 mWebTextView.remove(); 4240 } 4241 return; 4242 } 4243 // At this point, we know we have found an input field, so go ahead 4244 // and create the WebTextView if necessary. 4245 if (mWebTextView == null) { 4246 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4247 // Initialize our generation number. 4248 mTextGeneration = 0; 4249 } 4250 mWebTextView.updateTextSize(); 4251 Rect visibleRect = new Rect(); 4252 calcOurContentVisibleRect(visibleRect); 4253 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4254 // should be in content coordinates. 4255 Rect bounds = nativeFocusCandidateNodeBounds(); 4256 Rect vBox = contentToViewRect(bounds); 4257 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4258 if (!Rect.intersects(bounds, visibleRect)) { 4259 mWebTextView.bringIntoView(); 4260 } 4261 String text = nativeFocusCandidateText(); 4262 int nodePointer = nativeFocusCandidatePointer(); 4263 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4264 // It is possible that we have the same textfield, but it has moved, 4265 // i.e. In the case of opening/closing the screen. 4266 // In that case, we need to set the dimensions, but not the other 4267 // aspects. 4268 // If the text has been changed by webkit, update it. However, if 4269 // there has been more UI text input, ignore it. We will receive 4270 // another update when that text is recognized. 4271 if (text != null && !text.equals(mWebTextView.getText().toString()) 4272 && nativeTextGeneration() == mTextGeneration) { 4273 mWebTextView.setTextAndKeepSelection(text); 4274 } 4275 } else { 4276 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4277 Gravity.RIGHT : Gravity.NO_GRAVITY); 4278 // This needs to be called before setType, which may call 4279 // requestFormData, and it needs to have the correct nodePointer. 4280 mWebTextView.setNodePointer(nodePointer); 4281 mWebTextView.setType(nativeFocusCandidateType()); 4282 updateWebTextViewPadding(); 4283 if (null == text) { 4284 if (DebugFlags.WEB_VIEW) { 4285 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4286 } 4287 text = ""; 4288 } 4289 mWebTextView.setTextAndKeepSelection(text); 4290 InputMethodManager imm = InputMethodManager.peekInstance(); 4291 if (imm != null && imm.isActive(mWebTextView)) { 4292 imm.restartInput(mWebTextView); 4293 } 4294 } 4295 if (isFocused()) { 4296 mWebTextView.requestFocus(); 4297 } 4298 } 4299 4300 /** 4301 * Update the padding of mWebTextView based on the native textfield/textarea 4302 */ 4303 void updateWebTextViewPadding() { 4304 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4305 if (paddingRect != null) { 4306 // Use contentToViewDimension since these are the dimensions of 4307 // the padding. 4308 mWebTextView.setPadding( 4309 contentToViewDimension(paddingRect.left), 4310 contentToViewDimension(paddingRect.top), 4311 contentToViewDimension(paddingRect.right), 4312 contentToViewDimension(paddingRect.bottom)); 4313 } 4314 } 4315 4316 /** 4317 * Tell webkit to put the cursor on screen. 4318 */ 4319 /* package */ void revealSelection() { 4320 if (mWebViewCore != null) { 4321 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4322 } 4323 } 4324 4325 /** 4326 * Called by WebTextView to find saved form data associated with the 4327 * textfield 4328 * @param name Name of the textfield. 4329 * @param nodePointer Pointer to the node of the textfield, so it can be 4330 * compared to the currently focused textfield when the data is 4331 * retrieved. 4332 * @param autoFillable true if WebKit has determined this field is part of 4333 * a form that can be auto filled. 4334 */ 4335 /* package */ void requestFormData(String name, int nodePointer, boolean autoFillable) { 4336 if (mWebViewCore.getSettings().getSaveFormData()) { 4337 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4338 update.arg1 = nodePointer; 4339 RequestFormData updater = new RequestFormData(name, getUrl(), 4340 update, autoFillable); 4341 Thread t = new Thread(updater); 4342 t.start(); 4343 } 4344 } 4345 4346 /** 4347 * Pass a message to find out the <label> associated with the <input> 4348 * identified by nodePointer 4349 * @param framePointer Pointer to the frame containing the <input> node 4350 * @param nodePointer Pointer to the node for which a <label> is desired. 4351 */ 4352 /* package */ void requestLabel(int framePointer, int nodePointer) { 4353 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4354 nodePointer); 4355 } 4356 4357 /* 4358 * This class requests an Adapter for the WebTextView which shows past 4359 * entries stored in the database. It is a Runnable so that it can be done 4360 * in its own thread, without slowing down the UI. 4361 */ 4362 private class RequestFormData implements Runnable { 4363 private String mName; 4364 private String mUrl; 4365 private Message mUpdateMessage; 4366 private boolean mAutoFillable; 4367 4368 public RequestFormData(String name, String url, Message msg, boolean autoFillable) { 4369 mName = name; 4370 mUrl = url; 4371 mUpdateMessage = msg; 4372 mAutoFillable = autoFillable; 4373 } 4374 4375 public void run() { 4376 ArrayList<String> pastEntries = new ArrayList(); 4377 4378 if (mAutoFillable) { 4379 // Note that code inside the adapter click handler in WebTextView depends 4380 // on the AutoFill item being at the top of the drop down list. If you change 4381 // the order, make sure to do it there too! 4382 WebSettings settings = getSettings(); 4383 if (settings != null && settings.getAutoFillProfile() != null) { 4384 pastEntries.add(getResources().getText( 4385 com.android.internal.R.string.autofill_this_form).toString() + 4386 " " + 4387 mAutoFillData.getPreviewString()); 4388 mWebTextView.setAutoFillProfileIsSet(true); 4389 } else { 4390 // There is no autofill profile set up yet, so add an option that 4391 // will invite the user to set their profile up. 4392 pastEntries.add(getResources().getText( 4393 com.android.internal.R.string.setup_autofill).toString()); 4394 mWebTextView.setAutoFillProfileIsSet(false); 4395 } 4396 } 4397 4398 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4399 4400 if (pastEntries.size() > 0) { 4401 AutoCompleteAdapter adapter = new 4402 AutoCompleteAdapter(mContext, pastEntries); 4403 mUpdateMessage.obj = adapter; 4404 mUpdateMessage.sendToTarget(); 4405 } 4406 } 4407 } 4408 4409 /** 4410 * Dump the display tree to "/sdcard/displayTree.txt" 4411 * 4412 * @hide debug only 4413 */ 4414 public void dumpDisplayTree() { 4415 nativeDumpDisplayTree(getUrl()); 4416 } 4417 4418 /** 4419 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4420 * "/sdcard/domTree.txt" 4421 * 4422 * @hide debug only 4423 */ 4424 public void dumpDomTree(boolean toFile) { 4425 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4426 } 4427 4428 /** 4429 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4430 * to "/sdcard/renderTree.txt" 4431 * 4432 * @hide debug only 4433 */ 4434 public void dumpRenderTree(boolean toFile) { 4435 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4436 } 4437 4438 /** 4439 * Called by DRT on UI thread, need to proxy to WebCore thread. 4440 * 4441 * @hide debug only 4442 */ 4443 public void useMockDeviceOrientation() { 4444 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4445 } 4446 4447 /** 4448 * Called by DRT on WebCore thread. 4449 * 4450 * @hide debug only 4451 */ 4452 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4453 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4454 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4455 canProvideGamma, gamma); 4456 } 4457 4458 /** 4459 * Dump the V8 counters to standard output. 4460 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4461 * true. Otherwise, this will do nothing. 4462 * 4463 * @hide debug only 4464 */ 4465 public void dumpV8Counters() { 4466 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4467 } 4468 4469 // This is used to determine long press with the center key. Does not 4470 // affect long press with the trackball/touch. 4471 private boolean mGotCenterDown = false; 4472 4473 @Override 4474 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4475 // send complex characters to webkit for use by JS and plugins 4476 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4477 // pass the key to DOM 4478 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4479 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4480 // return true as DOM handles the key 4481 return true; 4482 } 4483 return false; 4484 } 4485 4486 private boolean isEnterActionKey(int keyCode) { 4487 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4488 || keyCode == KeyEvent.KEYCODE_ENTER 4489 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4490 } 4491 4492 @Override 4493 public boolean onKeyDown(int keyCode, KeyEvent event) { 4494 if (DebugFlags.WEB_VIEW) { 4495 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4496 + "keyCode=" + keyCode 4497 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4498 } 4499 4500 // don't implement accelerator keys here; defer to host application 4501 if (event.isCtrlPressed()) { 4502 return false; 4503 } 4504 4505 if (mNativeClass == 0) { 4506 return false; 4507 } 4508 4509 // do this hack up front, so it always works, regardless of touch-mode 4510 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4511 mAutoRedraw = !mAutoRedraw; 4512 if (mAutoRedraw) { 4513 invalidate(); 4514 } 4515 return true; 4516 } 4517 4518 // Bubble up the key event if 4519 // 1. it is a system key; or 4520 // 2. the host application wants to handle it; 4521 // 3. the accessibility injector is present and wants to handle it; 4522 if (event.isSystem() 4523 || mCallbackProxy.uiOverrideKeyEvent(event) 4524 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4525 return false; 4526 } 4527 4528 // if an accessibility script is injected we delegate to it the key handling. 4529 // this script is a screen reader which is a fully fledged solution for blind 4530 // users to navigate in and interact with web pages. 4531 if (accessibilityScriptInjected()) { 4532 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4533 return true; 4534 } 4535 4536 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4537 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4538 if (!nativePageShouldHandleShiftAndArrows() && !nativeCursorWantsKeyEvents() 4539 && !mSelectingText) { 4540 setUpSelect(); 4541 } 4542 } 4543 4544 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4545 pageUp(false); 4546 return true; 4547 } 4548 4549 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4550 pageDown(false); 4551 return true; 4552 } 4553 4554 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4555 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4556 switchOutDrawHistory(); 4557 if (nativePageShouldHandleShiftAndArrows()) { 4558 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4559 return true; 4560 } 4561 if (mSelectingText) { 4562 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4563 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4564 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4565 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4566 int multiplier = event.getRepeatCount() + 1; 4567 moveSelection(xRate * multiplier, yRate * multiplier); 4568 return true; 4569 } 4570 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4571 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4572 return true; 4573 } 4574 // Bubble up the key event as WebView doesn't handle it 4575 return false; 4576 } 4577 4578 if (isEnterActionKey(keyCode)) { 4579 switchOutDrawHistory(); 4580 if (event.getRepeatCount() == 0) { 4581 if (mSelectingText) { 4582 return true; // discard press if copy in progress 4583 } 4584 mGotCenterDown = true; 4585 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4586 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4587 // Already checked mNativeClass, so we do not need to check it 4588 // again. 4589 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4590 return true; 4591 } 4592 // Bubble up the key event as WebView doesn't handle it 4593 return false; 4594 } 4595 4596 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 4597 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 4598 // turn off copy select if a shift-key combo is pressed 4599 selectionDone(); 4600 } 4601 4602 if (getSettings().getNavDump()) { 4603 switch (keyCode) { 4604 case KeyEvent.KEYCODE_4: 4605 dumpDisplayTree(); 4606 break; 4607 case KeyEvent.KEYCODE_5: 4608 case KeyEvent.KEYCODE_6: 4609 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4610 break; 4611 case KeyEvent.KEYCODE_7: 4612 case KeyEvent.KEYCODE_8: 4613 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4614 break; 4615 case KeyEvent.KEYCODE_9: 4616 nativeInstrumentReport(); 4617 return true; 4618 } 4619 } 4620 4621 if (nativeCursorIsTextInput()) { 4622 // This message will put the node in focus, for the DOM's notion 4623 // of focus, and make the focuscontroller active 4624 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 4625 nativeCursorNodePointer()); 4626 // This will bring up the WebTextView and put it in focus, for 4627 // our view system's notion of focus 4628 rebuildWebTextView(); 4629 // Now we need to pass the event to it 4630 if (inEditingMode()) { 4631 mWebTextView.setDefaultSelection(); 4632 return mWebTextView.dispatchKeyEvent(event); 4633 } 4634 } else if (nativeHasFocusNode()) { 4635 // In this case, the cursor is not on a text input, but the focus 4636 // might be. Check it, and if so, hand over to the WebTextView. 4637 rebuildWebTextView(); 4638 if (inEditingMode()) { 4639 mWebTextView.setDefaultSelection(); 4640 return mWebTextView.dispatchKeyEvent(event); 4641 } 4642 } 4643 4644 // TODO: should we pass all the keys to DOM or check the meta tag 4645 if (nativeCursorWantsKeyEvents() || true) { 4646 // pass the key to DOM 4647 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4648 // return true as DOM handles the key 4649 return true; 4650 } 4651 4652 // Bubble up the key event as WebView doesn't handle it 4653 return false; 4654 } 4655 4656 @Override 4657 public boolean onKeyUp(int keyCode, KeyEvent event) { 4658 if (DebugFlags.WEB_VIEW) { 4659 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4660 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4661 } 4662 4663 if (mNativeClass == 0) { 4664 return false; 4665 } 4666 4667 // special CALL handling when cursor node's href is "tel:XXX" 4668 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4669 String text = nativeCursorText(); 4670 if (!nativeCursorIsTextInput() && text != null 4671 && text.startsWith(SCHEME_TEL)) { 4672 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4673 getContext().startActivity(intent); 4674 return true; 4675 } 4676 } 4677 4678 // Bubble up the key event if 4679 // 1. it is a system key; or 4680 // 2. the host application wants to handle it; 4681 // 3. the accessibility injector is present and wants to handle it; 4682 if (event.isSystem() 4683 || mCallbackProxy.uiOverrideKeyEvent(event) 4684 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4685 return false; 4686 } 4687 4688 // if an accessibility script is injected we delegate to it the key handling. 4689 // this script is a screen reader which is a fully fledged solution for blind 4690 // users to navigate in and interact with web pages. 4691 if (accessibilityScriptInjected()) { 4692 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4693 return true; 4694 } 4695 4696 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4697 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4698 if (!nativePageShouldHandleShiftAndArrows() && copySelection()) { 4699 selectionDone(); 4700 return true; 4701 } 4702 } 4703 4704 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4705 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4706 if (nativePageShouldHandleShiftAndArrows()) { 4707 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4708 return true; 4709 } 4710 // always handle the navigation keys in the UI thread 4711 // Bubble up the key event as WebView doesn't handle it 4712 return false; 4713 } 4714 4715 if (isEnterActionKey(keyCode)) { 4716 // remove the long press message first 4717 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4718 mGotCenterDown = false; 4719 4720 if (mSelectingText) { 4721 if (mExtendSelection) { 4722 copySelection(); 4723 selectionDone(); 4724 } else { 4725 mExtendSelection = true; 4726 nativeSetExtendSelection(); 4727 invalidate(); // draw the i-beam instead of the arrow 4728 } 4729 return true; // discard press if copy in progress 4730 } 4731 4732 // perform the single click 4733 Rect visibleRect = sendOurVisibleRect(); 4734 // Note that sendOurVisibleRect calls viewToContent, so the 4735 // coordinates should be in content coordinates. 4736 if (!nativeCursorIntersects(visibleRect)) { 4737 return false; 4738 } 4739 WebViewCore.CursorData data = cursorData(); 4740 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4741 playSoundEffect(SoundEffectConstants.CLICK); 4742 if (nativeCursorIsTextInput()) { 4743 rebuildWebTextView(); 4744 centerKeyPressOnTextField(); 4745 if (inEditingMode()) { 4746 mWebTextView.setDefaultSelection(); 4747 } 4748 return true; 4749 } 4750 clearTextEntry(); 4751 nativeShowCursorTimed(); 4752 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4753 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4754 nativeCursorNodePointer()); 4755 } 4756 return true; 4757 } 4758 4759 // TODO: should we pass all the keys to DOM or check the meta tag 4760 if (nativeCursorWantsKeyEvents() || true) { 4761 // pass the key to DOM 4762 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4763 // return true as DOM handles the key 4764 return true; 4765 } 4766 4767 // Bubble up the key event as WebView doesn't handle it 4768 return false; 4769 } 4770 4771 /* 4772 * Enter selecting text mode. Returns true if the WebView is now in 4773 * selecting text mode (including if it was already in that mode, and this 4774 * method did nothing). 4775 */ 4776 private boolean setUpSelect() { 4777 if (0 == mNativeClass) return false; // client isn't initialized 4778 if (inFullScreenMode()) return false; 4779 if (mSelectingText) return true; 4780 mExtendSelection = false; 4781 mSelectingText = mDrawSelectionPointer = true; 4782 // don't let the picture change during text selection 4783 WebViewCore.pauseUpdatePicture(mWebViewCore); 4784 nativeResetSelection(); 4785 if (nativeHasCursorNode()) { 4786 Rect rect = nativeCursorNodeBounds(); 4787 mSelectX = contentToViewX(rect.left); 4788 mSelectY = contentToViewY(rect.top); 4789 } else if (mLastTouchY > getVisibleTitleHeight()) { 4790 mSelectX = mScrollX + (int) mLastTouchX; 4791 mSelectY = mScrollY + (int) mLastTouchY; 4792 } else { 4793 mSelectX = mScrollX + getViewWidth() / 2; 4794 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4795 } 4796 nativeHideCursor(); 4797 mSelectCallback = new SelectActionModeCallback(); 4798 mSelectCallback.setWebView(this); 4799 if (startActionMode(mSelectCallback) == null) { 4800 // There is no ActionMode, so do not allow the user to modify a 4801 // selection. 4802 selectionDone(); 4803 return false; 4804 } 4805 return true; 4806 } 4807 4808 /** 4809 * Use this method to put the WebView into text selection mode. 4810 * Do not rely on this functionality; it will be deprecated in the future. 4811 */ 4812 public void emulateShiftHeld() { 4813 setUpSelect(); 4814 } 4815 4816 /** 4817 * Select all of the text in this WebView. 4818 * 4819 * @hide pending API council approval. 4820 */ 4821 public void selectAll() { 4822 if (0 == mNativeClass) return; // client isn't initialized 4823 if (inFullScreenMode()) return; 4824 if (!mSelectingText) { 4825 // retrieve a point somewhere within the text 4826 Point select = nativeSelectableText(); 4827 if (!selectText(select.x, select.y)) return; 4828 } 4829 nativeSelectAll(); 4830 mDrawSelectionPointer = false; 4831 mExtendSelection = true; 4832 invalidate(); 4833 } 4834 4835 /** 4836 * Called when the selection has been removed. 4837 */ 4838 void selectionDone() { 4839 if (mSelectingText) { 4840 mSelectingText = false; 4841 // finish is idempotent, so this is fine even if selectionDone was 4842 // called by mSelectCallback.onDestroyActionMode 4843 mSelectCallback.finish(); 4844 mSelectCallback = null; 4845 WebViewCore.resumePriority(); 4846 WebViewCore.resumeUpdatePicture(mWebViewCore); 4847 invalidate(); // redraw without selection 4848 mAutoScrollX = 0; 4849 mAutoScrollY = 0; 4850 mSentAutoScrollMessage = false; 4851 } 4852 } 4853 4854 /** 4855 * Copy the selection to the clipboard 4856 * 4857 * @hide pending API council approval. 4858 */ 4859 public boolean copySelection() { 4860 boolean copiedSomething = false; 4861 String selection = getSelection(); 4862 if (selection != "") { 4863 if (DebugFlags.WEB_VIEW) { 4864 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4865 } 4866 Toast.makeText(mContext 4867 , com.android.internal.R.string.text_copied 4868 , Toast.LENGTH_SHORT).show(); 4869 copiedSomething = true; 4870 ClipboardManager cm = (ClipboardManager)getContext() 4871 .getSystemService(Context.CLIPBOARD_SERVICE); 4872 cm.setText(selection); 4873 } 4874 invalidate(); // remove selection region and pointer 4875 return copiedSomething; 4876 } 4877 4878 /** 4879 * Returns the currently highlighted text as a string. 4880 */ 4881 String getSelection() { 4882 if (mNativeClass == 0) return ""; 4883 return nativeGetSelection(); 4884 } 4885 4886 @Override 4887 protected void onAttachedToWindow() { 4888 super.onAttachedToWindow(); 4889 if (hasWindowFocus()) setActive(true); 4890 final ViewTreeObserver treeObserver = getViewTreeObserver(); 4891 if (treeObserver != null) { 4892 if (mGlobalLayoutListener == null) { 4893 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 4894 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 4895 } 4896 if (mScrollChangedListener == null) { 4897 mScrollChangedListener = new InnerScrollChangedListener(); 4898 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 4899 } 4900 } 4901 } 4902 4903 @Override 4904 protected void onDetachedFromWindow() { 4905 clearHelpers(); 4906 mZoomManager.dismissZoomPicker(); 4907 if (hasWindowFocus()) setActive(false); 4908 4909 final ViewTreeObserver treeObserver = getViewTreeObserver(); 4910 if (treeObserver != null) { 4911 if (mGlobalLayoutListener != null) { 4912 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 4913 mGlobalLayoutListener = null; 4914 } 4915 if (mScrollChangedListener != null) { 4916 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 4917 mScrollChangedListener = null; 4918 } 4919 } 4920 4921 super.onDetachedFromWindow(); 4922 } 4923 4924 @Override 4925 protected void onVisibilityChanged(View changedView, int visibility) { 4926 super.onVisibilityChanged(changedView, visibility); 4927 // The zoomManager may be null if the webview is created from XML that 4928 // specifies the view's visibility param as not visible (see http://b/2794841) 4929 if (visibility != View.VISIBLE && mZoomManager != null) { 4930 mZoomManager.dismissZoomPicker(); 4931 } 4932 } 4933 4934 /** 4935 * @deprecated WebView no longer needs to implement 4936 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4937 */ 4938 @Deprecated 4939 public void onChildViewAdded(View parent, View child) {} 4940 4941 /** 4942 * @deprecated WebView no longer needs to implement 4943 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4944 */ 4945 @Deprecated 4946 public void onChildViewRemoved(View p, View child) {} 4947 4948 /** 4949 * @deprecated WebView should not have implemented 4950 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4951 * does nothing now. 4952 */ 4953 @Deprecated 4954 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4955 } 4956 4957 private void setActive(boolean active) { 4958 if (active) { 4959 if (hasFocus()) { 4960 // If our window regained focus, and we have focus, then begin 4961 // drawing the cursor ring 4962 mDrawCursorRing = true; 4963 setFocusControllerActive(true); 4964 if (mNativeClass != 0) { 4965 nativeRecordButtons(true, false, true); 4966 } 4967 } else { 4968 if (!inEditingMode()) { 4969 // If our window gained focus, but we do not have it, do not 4970 // draw the cursor ring. 4971 mDrawCursorRing = false; 4972 setFocusControllerActive(false); 4973 } 4974 // We do not call nativeRecordButtons here because we assume 4975 // that when we lost focus, or window focus, it got called with 4976 // false for the first parameter 4977 } 4978 } else { 4979 if (!mZoomManager.isZoomPickerVisible()) { 4980 /* 4981 * The external zoom controls come in their own window, so our 4982 * window loses focus. Our policy is to not draw the cursor ring 4983 * if our window is not focused, but this is an exception since 4984 * the user can still navigate the web page with the zoom 4985 * controls showing. 4986 */ 4987 mDrawCursorRing = false; 4988 } 4989 mGotKeyDown = false; 4990 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4991 mTouchMode = TOUCH_DONE_MODE; 4992 if (mNativeClass != 0) { 4993 nativeRecordButtons(false, false, true); 4994 } 4995 setFocusControllerActive(false); 4996 } 4997 invalidate(); 4998 } 4999 5000 // To avoid drawing the cursor ring, and remove the TextView when our window 5001 // loses focus. 5002 @Override 5003 public void onWindowFocusChanged(boolean hasWindowFocus) { 5004 setActive(hasWindowFocus); 5005 if (hasWindowFocus) { 5006 JWebCoreJavaBridge.setActiveWebView(this); 5007 } else { 5008 JWebCoreJavaBridge.removeActiveWebView(this); 5009 } 5010 super.onWindowFocusChanged(hasWindowFocus); 5011 } 5012 5013 /* 5014 * Pass a message to WebCore Thread, telling the WebCore::Page's 5015 * FocusController to be "inactive" so that it will 5016 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5017 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5018 */ 5019 /* package */ void setFocusControllerActive(boolean active) { 5020 if (mWebViewCore == null) return; 5021 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5022 // Need to send this message after the document regains focus. 5023 if (active && mListBoxMessage != null) { 5024 mWebViewCore.sendMessage(mListBoxMessage); 5025 mListBoxMessage = null; 5026 } 5027 } 5028 5029 @Override 5030 protected void onFocusChanged(boolean focused, int direction, 5031 Rect previouslyFocusedRect) { 5032 if (DebugFlags.WEB_VIEW) { 5033 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5034 } 5035 if (focused) { 5036 // When we regain focus, if we have window focus, resume drawing 5037 // the cursor ring 5038 if (hasWindowFocus()) { 5039 mDrawCursorRing = true; 5040 if (mNativeClass != 0) { 5041 nativeRecordButtons(true, false, true); 5042 } 5043 setFocusControllerActive(true); 5044 //} else { 5045 // The WebView has gained focus while we do not have 5046 // windowfocus. When our window lost focus, we should have 5047 // called nativeRecordButtons(false...) 5048 } 5049 } else { 5050 // When we lost focus, unless focus went to the TextView (which is 5051 // true if we are in editing mode), stop drawing the cursor ring. 5052 if (!inEditingMode()) { 5053 mDrawCursorRing = false; 5054 if (mNativeClass != 0) { 5055 nativeRecordButtons(false, false, true); 5056 } 5057 setFocusControllerActive(false); 5058 } 5059 mGotKeyDown = false; 5060 } 5061 5062 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5063 } 5064 5065 void setGLRectViewport() { 5066 // Use the getGlobalVisibleRect() to get the intersection among the parents 5067 Rect webViewRect = new Rect(); 5068 boolean visible = getGlobalVisibleRect(webViewRect); 5069 5070 // Then need to invert the Y axis, just for GL 5071 View rootView = getRootView(); 5072 int rootViewHeight = rootView.getHeight(); 5073 int savedWebViewBottom = webViewRect.bottom; 5074 webViewRect.bottom = rootViewHeight - webViewRect.top; 5075 webViewRect.top = rootViewHeight - savedWebViewBottom; 5076 5077 // Store the viewport 5078 mGLRectViewport = webViewRect; 5079 } 5080 5081 /** 5082 * @hide 5083 */ 5084 @Override 5085 protected boolean setFrame(int left, int top, int right, int bottom) { 5086 boolean changed = super.setFrame(left, top, right, bottom); 5087 if (!changed && mHeightCanMeasure) { 5088 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5089 // in WebViewCore after we get the first layout. We do call 5090 // requestLayout() when we get contentSizeChanged(). But the View 5091 // system won't call onSizeChanged if the dimension is not changed. 5092 // In this case, we need to call sendViewSizeZoom() explicitly to 5093 // notify the WebKit about the new dimensions. 5094 sendViewSizeZoom(false); 5095 } 5096 setGLRectViewport(); 5097 return changed; 5098 } 5099 5100 @Override 5101 protected void onSizeChanged(int w, int h, int ow, int oh) { 5102 super.onSizeChanged(w, h, ow, oh); 5103 5104 // adjust the max viewport width depending on the view dimensions. This 5105 // is to ensure the scaling is not going insane. So do not shrink it if 5106 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5107 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5108 if (newMaxViewportWidth > sMaxViewportWidth) { 5109 sMaxViewportWidth = newMaxViewportWidth; 5110 } 5111 5112 mZoomManager.onSizeChanged(w, h, ow, oh); 5113 } 5114 5115 @Override 5116 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5117 super.onScrollChanged(l, t, oldl, oldt); 5118 if (!mInOverScrollMode) { 5119 sendOurVisibleRect(); 5120 // update WebKit if visible title bar height changed. The logic is same 5121 // as getVisibleTitleHeight. 5122 int titleHeight = getTitleHeight(); 5123 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5124 sendViewSizeZoom(false); 5125 } 5126 } 5127 } 5128 5129 @Override 5130 public boolean dispatchKeyEvent(KeyEvent event) { 5131 boolean dispatch = true; 5132 5133 // Textfields, plugins, and contentEditable nodes need to receive the 5134 // shift up key even if another key was released while the shift key 5135 // was held down. 5136 if (!inEditingMode() && (mNativeClass == 0 5137 || !nativePageShouldHandleShiftAndArrows())) { 5138 if (event.getAction() == KeyEvent.ACTION_DOWN) { 5139 mGotKeyDown = true; 5140 } else { 5141 if (!mGotKeyDown) { 5142 /* 5143 * We got a key up for which we were not the recipient of 5144 * the original key down. Don't give it to the view. 5145 */ 5146 dispatch = false; 5147 } 5148 mGotKeyDown = false; 5149 } 5150 } 5151 5152 if (dispatch) { 5153 return super.dispatchKeyEvent(event); 5154 } else { 5155 // We didn't dispatch, so let something else handle the key 5156 return false; 5157 } 5158 } 5159 5160 // Here are the snap align logic: 5161 // 1. If it starts nearly horizontally or vertically, snap align; 5162 // 2. If there is a dramitic direction change, let it go; 5163 // 3. If there is a same direction back and forth, lock it. 5164 5165 // adjustable parameters 5166 private int mMinLockSnapReverseDistance; 5167 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5168 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5169 5170 private boolean hitFocusedPlugin(int contentX, int contentY) { 5171 if (DebugFlags.WEB_VIEW) { 5172 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5173 Rect r = nativeFocusNodeBounds(); 5174 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5175 + ", " + r.right + ", " + r.bottom + ")"); 5176 } 5177 return nativeFocusIsPlugin() 5178 && nativeFocusNodeBounds().contains(contentX, contentY); 5179 } 5180 5181 private boolean shouldForwardTouchEvent() { 5182 return mFullScreenHolder != null || (mForwardTouchEvents 5183 && !mSelectingText 5184 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5185 } 5186 5187 private boolean inFullScreenMode() { 5188 return mFullScreenHolder != null; 5189 } 5190 5191 private void dismissFullScreenMode() { 5192 if (inFullScreenMode()) { 5193 mFullScreenHolder.dismiss(); 5194 mFullScreenHolder = null; 5195 } 5196 } 5197 5198 void onPinchToZoomAnimationStart() { 5199 // cancel the single touch handling 5200 cancelTouch(); 5201 onZoomAnimationStart(); 5202 } 5203 5204 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5205 onZoomAnimationEnd(); 5206 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5207 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5208 // as it may trigger the unwanted fling. 5209 mTouchMode = TOUCH_PINCH_DRAG; 5210 mConfirmMove = true; 5211 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5212 } 5213 5214 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5215 // layer is found. 5216 private void startScrollingLayer(float x, float y) { 5217 int contentX = viewToContentX((int) x + mScrollX); 5218 int contentY = viewToContentY((int) y + mScrollY); 5219 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5220 mScrollingLayerRect); 5221 if (mScrollingLayer != 0) { 5222 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5223 } 5224 } 5225 5226 // 1/(density * density) used to compute the distance between points. 5227 // Computed in init(). 5228 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5229 5230 // The distance between two points reported in onTouchEvent scaled by the 5231 // density of the screen. 5232 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5233 5234 @Override 5235 public boolean onTouchEvent(MotionEvent ev) { 5236 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5237 return false; 5238 } 5239 5240 if (DebugFlags.WEB_VIEW) { 5241 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5242 + " mTouchMode=" + mTouchMode 5243 + " numPointers=" + ev.getPointerCount()); 5244 } 5245 5246 int action = ev.getAction(); 5247 float x = ev.getX(); 5248 float y = ev.getY(); 5249 long eventTime = ev.getEventTime(); 5250 5251 // mDeferMultitouch is a hack for layout tests, where it is used to 5252 // force passing multi-touch events to webkit. 5253 // FIXME: always pass multi-touch events to webkit and remove everything 5254 // related to mDeferMultitouch. 5255 if (ev.getPointerCount() > 1 && 5256 (mDeferMultitouch || mZoomManager.isZoomScaleFixed())) { 5257 if (DebugFlags.WEB_VIEW) { 5258 Log.v(LOGTAG, "passing " + ev.getPointerCount() + " points to webkit"); 5259 } 5260 passMultiTouchToWebKit(ev); 5261 return true; 5262 } 5263 5264 final ScaleGestureDetector detector = 5265 mZoomManager.getMultiTouchGestureDetector(); 5266 5267 if (mZoomManager.supportsMultiTouchZoom() && ev.getPointerCount() > 1) { 5268 if (!detector.isInProgress() && 5269 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 5270 // Insert a fake pointer down event in order to start 5271 // the zoom scale detector. 5272 MotionEvent temp = MotionEvent.obtain(ev); 5273 // Clear the original event and set it to 5274 // ACTION_POINTER_DOWN. 5275 try { 5276 temp.setAction(temp.getAction() & 5277 ~MotionEvent.ACTION_MASK | 5278 MotionEvent.ACTION_POINTER_DOWN); 5279 detector.onTouchEvent(temp); 5280 } finally { 5281 temp.recycle(); 5282 } 5283 } 5284 5285 detector.onTouchEvent(ev); 5286 5287 if (detector.isInProgress()) { 5288 mLastTouchTime = eventTime; 5289 cancelLongPress(); 5290 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5291 if (!mZoomManager.supportsPanDuringZoom()) { 5292 return true; 5293 } 5294 mTouchMode = TOUCH_DRAG_MODE; 5295 if (mVelocityTracker == null) { 5296 mVelocityTracker = VelocityTracker.obtain(); 5297 } 5298 } 5299 5300 x = detector.getFocusX(); 5301 y = detector.getFocusY(); 5302 action = ev.getAction() & MotionEvent.ACTION_MASK; 5303 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5304 cancelTouch(); 5305 action = MotionEvent.ACTION_DOWN; 5306 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5307 // set mLastTouchX/Y to the remaining point 5308 mLastTouchX = x; 5309 mLastTouchY = y; 5310 } else if (action == MotionEvent.ACTION_MOVE) { 5311 // negative x or y indicate it is on the edge, skip it. 5312 if (x < 0 || y < 0) { 5313 return true; 5314 } 5315 } 5316 } 5317 5318 // Due to the touch screen edge effect, a touch closer to the edge 5319 // always snapped to the edge. As getViewWidth() can be different from 5320 // getWidth() due to the scrollbar, adjusting the point to match 5321 // getViewWidth(). Same applied to the height. 5322 x = Math.min(x, getViewWidth() - 1); 5323 y = Math.min(y, getViewHeightWithTitle() - 1); 5324 5325 float fDeltaX = mLastTouchX - x; 5326 float fDeltaY = mLastTouchY - y; 5327 int deltaX = (int) fDeltaX; 5328 int deltaY = (int) fDeltaY; 5329 int contentX = viewToContentX((int) x + mScrollX); 5330 int contentY = viewToContentY((int) y + mScrollY); 5331 5332 switch (action) { 5333 case MotionEvent.ACTION_DOWN: { 5334 mPreventDefault = PREVENT_DEFAULT_NO; 5335 mConfirmMove = false; 5336 mInitialHitTestResult = null; 5337 if (!mScroller.isFinished()) { 5338 // stop the current scroll animation, but if this is 5339 // the start of a fling, allow it to add to the current 5340 // fling's velocity 5341 mScroller.abortAnimation(); 5342 mTouchMode = TOUCH_DRAG_START_MODE; 5343 mConfirmMove = true; 5344 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5345 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5346 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5347 if (getSettings().supportTouchOnly()) { 5348 removeTouchHighlight(true); 5349 } 5350 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5351 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5352 } else { 5353 // commit the short press action for the previous tap 5354 doShortPress(); 5355 mTouchMode = TOUCH_INIT_MODE; 5356 mDeferTouchProcess = (!inFullScreenMode() 5357 && mForwardTouchEvents) ? hitFocusedPlugin( 5358 contentX, contentY) : false; 5359 } 5360 } else { // the normal case 5361 mTouchMode = TOUCH_INIT_MODE; 5362 mDeferTouchProcess = (!inFullScreenMode() 5363 && mForwardTouchEvents) ? hitFocusedPlugin( 5364 contentX, contentY) : false; 5365 mWebViewCore.sendMessage( 5366 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5367 if (getSettings().supportTouchOnly()) { 5368 TouchHighlightData data = new TouchHighlightData(); 5369 data.mX = contentX; 5370 data.mY = contentY; 5371 data.mSlop = viewToContentDimension(mNavSlop); 5372 mWebViewCore.sendMessageDelayed( 5373 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5374 ViewConfiguration.getTapTimeout()); 5375 if (DEBUG_TOUCH_HIGHLIGHT) { 5376 if (getSettings().getNavDump()) { 5377 mTouchHighlightX = (int) x + mScrollX; 5378 mTouchHighlightY = (int) y + mScrollY; 5379 mPrivateHandler.postDelayed(new Runnable() { 5380 public void run() { 5381 mTouchHighlightX = mTouchHighlightY = 0; 5382 invalidate(); 5383 } 5384 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5385 } 5386 } 5387 } 5388 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5389 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5390 (eventTime - mLastTouchUpTime), eventTime); 5391 } 5392 if (mSelectingText) { 5393 mDrawSelectionPointer = false; 5394 mSelectionStarted = nativeStartSelection(contentX, contentY); 5395 if (DebugFlags.WEB_VIEW) { 5396 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5397 } 5398 invalidate(); 5399 } 5400 } 5401 // Trigger the link 5402 if (mTouchMode == TOUCH_INIT_MODE 5403 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5404 mPrivateHandler.sendEmptyMessageDelayed( 5405 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5406 mPrivateHandler.sendEmptyMessageDelayed( 5407 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5408 if (inFullScreenMode() || mDeferTouchProcess) { 5409 mPreventDefault = PREVENT_DEFAULT_YES; 5410 } else if (mForwardTouchEvents) { 5411 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5412 } else { 5413 mPreventDefault = PREVENT_DEFAULT_NO; 5414 } 5415 // pass the touch events from UI thread to WebCore thread 5416 if (shouldForwardTouchEvent()) { 5417 TouchEventData ted = new TouchEventData(); 5418 ted.mAction = action; 5419 ted.mPoints = new Point[1]; 5420 ted.mPoints[0] = new Point(contentX, contentY); 5421 ted.mMetaState = ev.getMetaState(); 5422 ted.mReprocess = mDeferTouchProcess; 5423 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5424 if (mDeferTouchProcess) { 5425 // still needs to set them for compute deltaX/Y 5426 mLastTouchX = x; 5427 mLastTouchY = y; 5428 break; 5429 } 5430 if (!inFullScreenMode()) { 5431 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5432 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5433 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5434 action, 0), TAP_TIMEOUT); 5435 } 5436 } 5437 } 5438 startTouch(x, y, eventTime); 5439 break; 5440 } 5441 case MotionEvent.ACTION_MOVE: { 5442 boolean firstMove = false; 5443 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5444 >= mTouchSlopSquare) { 5445 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5446 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5447 mConfirmMove = true; 5448 firstMove = true; 5449 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5450 mTouchMode = TOUCH_INIT_MODE; 5451 } 5452 if (getSettings().supportTouchOnly()) { 5453 removeTouchHighlight(true); 5454 } 5455 } 5456 // pass the touch events from UI thread to WebCore thread 5457 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5458 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5459 TouchEventData ted = new TouchEventData(); 5460 ted.mAction = action; 5461 ted.mPoints = new Point[1]; 5462 ted.mPoints[0] = new Point(contentX, contentY); 5463 ted.mMetaState = ev.getMetaState(); 5464 ted.mReprocess = mDeferTouchProcess; 5465 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5466 mLastSentTouchTime = eventTime; 5467 if (mDeferTouchProcess) { 5468 break; 5469 } 5470 if (firstMove && !inFullScreenMode()) { 5471 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5472 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5473 action, 0), TAP_TIMEOUT); 5474 } 5475 } 5476 if (mTouchMode == TOUCH_DONE_MODE 5477 || mPreventDefault == PREVENT_DEFAULT_YES) { 5478 // no dragging during scroll zoom animation, or when prevent 5479 // default is yes 5480 break; 5481 } 5482 if (mVelocityTracker == null) { 5483 Log.e(LOGTAG, "Got null mVelocityTracker when " 5484 + "mPreventDefault = " + mPreventDefault 5485 + " mDeferTouchProcess = " + mDeferTouchProcess 5486 + " mTouchMode = " + mTouchMode); 5487 } 5488 mVelocityTracker.addMovement(ev); 5489 if (mSelectingText && mSelectionStarted) { 5490 if (DebugFlags.WEB_VIEW) { 5491 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5492 } 5493 ViewParent parent = getParent(); 5494 if (parent != null) { 5495 parent.requestDisallowInterceptTouchEvent(true); 5496 } 5497 int layer = nativeScrollableLayer(contentX, contentY, mScrollingLayerRect); 5498 if (layer == 0) { 5499 mAutoScrollX = x <= SELECT_SCROLL ? -SELECT_SCROLL 5500 : x >= getViewWidth() - SELECT_SCROLL 5501 ? SELECT_SCROLL : 0; 5502 mAutoScrollY = y <= SELECT_SCROLL ? -SELECT_SCROLL 5503 : y >= getViewHeightWithTitle() - SELECT_SCROLL 5504 ? SELECT_SCROLL : 0; 5505 if (!mSentAutoScrollMessage) { 5506 mSentAutoScrollMessage = true; 5507 mPrivateHandler.sendEmptyMessageDelayed( 5508 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5509 } 5510 } else { 5511 // TODO: allow scrollable overflow div to autoscroll 5512 } 5513 if (deltaX != 0 || deltaY != 0) { 5514 nativeExtendSelection(contentX, contentY); 5515 invalidate(); 5516 } 5517 break; 5518 } 5519 5520 if (mTouchMode != TOUCH_DRAG_MODE && 5521 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5522 5523 if (!mConfirmMove) { 5524 break; 5525 } 5526 5527 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5528 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5529 // track mLastTouchTime as we may need to do fling at 5530 // ACTION_UP 5531 mLastTouchTime = eventTime; 5532 break; 5533 } 5534 5535 // Only lock dragging to one axis if we don't have a scale in progress. 5536 // Scaling implies free-roaming movement. Note this is only ever a question 5537 // if mZoomManager.supportsPanDuringZoom() is true. 5538 if (detector != null && !detector.isInProgress()) { 5539 // if it starts nearly horizontal or vertical, enforce it 5540 int ax = Math.abs(deltaX); 5541 int ay = Math.abs(deltaY); 5542 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5543 mSnapScrollMode = SNAP_X; 5544 mSnapPositive = deltaX > 0; 5545 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5546 mSnapScrollMode = SNAP_Y; 5547 mSnapPositive = deltaY > 0; 5548 } 5549 } 5550 5551 mTouchMode = TOUCH_DRAG_MODE; 5552 mLastTouchX = x; 5553 mLastTouchY = y; 5554 fDeltaX = 0.0f; 5555 fDeltaY = 0.0f; 5556 deltaX = 0; 5557 deltaY = 0; 5558 5559 startScrollingLayer(x, y); 5560 startDrag(); 5561 } 5562 5563 // do pan 5564 boolean done = false; 5565 boolean keepScrollBarsVisible = false; 5566 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5567 mLastTouchX = x; 5568 mLastTouchY = y; 5569 keepScrollBarsVisible = done = true; 5570 } else { 5571 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5572 int ax = Math.abs(deltaX); 5573 int ay = Math.abs(deltaY); 5574 if (mSnapScrollMode == SNAP_X) { 5575 // radical change means getting out of snap mode 5576 if (ay > MAX_SLOPE_FOR_DIAG * ax 5577 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5578 mSnapScrollMode = SNAP_NONE; 5579 } 5580 // reverse direction means lock in the snap mode 5581 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5582 (mSnapPositive 5583 ? deltaX < -mMinLockSnapReverseDistance 5584 : deltaX > mMinLockSnapReverseDistance)) { 5585 mSnapScrollMode |= SNAP_LOCK; 5586 } 5587 } else { 5588 // radical change means getting out of snap mode 5589 if (ax > MAX_SLOPE_FOR_DIAG * ay 5590 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5591 mSnapScrollMode = SNAP_NONE; 5592 } 5593 // reverse direction means lock in the snap mode 5594 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5595 (mSnapPositive 5596 ? deltaY < -mMinLockSnapReverseDistance 5597 : deltaY > mMinLockSnapReverseDistance)) { 5598 mSnapScrollMode |= SNAP_LOCK; 5599 } 5600 } 5601 } 5602 if (mSnapScrollMode != SNAP_NONE) { 5603 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5604 deltaY = 0; 5605 } else { 5606 deltaX = 0; 5607 } 5608 } 5609 if ((deltaX | deltaY) != 0) { 5610 if (deltaX != 0) { 5611 mLastTouchX = x; 5612 } 5613 if (deltaY != 0) { 5614 mLastTouchY = y; 5615 } 5616 mHeldMotionless = MOTIONLESS_FALSE; 5617 } else { 5618 // keep the scrollbar on the screen even there is no 5619 // scroll 5620 mLastTouchX = x; 5621 mLastTouchY = y; 5622 keepScrollBarsVisible = true; 5623 } 5624 mLastTouchTime = eventTime; 5625 mUserScroll = true; 5626 } 5627 5628 doDrag(deltaX, deltaY); 5629 5630 // Turn off scrollbars when dragging a layer. 5631 if (keepScrollBarsVisible && 5632 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5633 if (mHeldMotionless != MOTIONLESS_TRUE) { 5634 mHeldMotionless = MOTIONLESS_TRUE; 5635 invalidate(); 5636 } 5637 // keep the scrollbar on the screen even there is no scroll 5638 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5639 false); 5640 // return false to indicate that we can't pan out of the 5641 // view space 5642 return !done; 5643 } 5644 break; 5645 } 5646 case MotionEvent.ACTION_UP: { 5647 if (!isFocused()) requestFocus(); 5648 // pass the touch events from UI thread to WebCore thread 5649 if (shouldForwardTouchEvent()) { 5650 TouchEventData ted = new TouchEventData(); 5651 ted.mAction = action; 5652 ted.mPoints = new Point[1]; 5653 ted.mPoints[0] = new Point(contentX, contentY); 5654 ted.mMetaState = ev.getMetaState(); 5655 ted.mReprocess = mDeferTouchProcess; 5656 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5657 } 5658 mLastTouchUpTime = eventTime; 5659 switch (mTouchMode) { 5660 case TOUCH_DOUBLE_TAP_MODE: // double tap 5661 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5662 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5663 if (inFullScreenMode() || mDeferTouchProcess) { 5664 TouchEventData ted = new TouchEventData(); 5665 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5666 ted.mPoints = new Point[1]; 5667 ted.mPoints[0] = new Point(contentX, contentY); 5668 ted.mMetaState = ev.getMetaState(); 5669 ted.mReprocess = mDeferTouchProcess; 5670 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5671 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5672 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5673 mTouchMode = TOUCH_DONE_MODE; 5674 } 5675 break; 5676 case TOUCH_INIT_MODE: // tap 5677 case TOUCH_SHORTPRESS_START_MODE: 5678 case TOUCH_SHORTPRESS_MODE: 5679 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5680 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5681 if (mConfirmMove) { 5682 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5683 " WebCore's response for touch down."); 5684 if (mPreventDefault != PREVENT_DEFAULT_YES 5685 && (computeMaxScrollX() > 0 5686 || computeMaxScrollY() > 0)) { 5687 // If the user has performed a very quick touch 5688 // sequence it is possible that we may get here 5689 // before WebCore has had a chance to process the events. 5690 // In this case, any call to preventDefault in the 5691 // JS touch handler will not have been executed yet. 5692 // Hence we will see both the UI (now) and WebCore 5693 // (when context switches) handling the event, 5694 // regardless of whether the web developer actually 5695 // doeses preventDefault in their touch handler. This 5696 // is the nature of our asynchronous touch model. 5697 5698 // we will not rewrite drag code here, but we 5699 // will try fling if it applies. 5700 WebViewCore.reducePriority(); 5701 // to get better performance, pause updating the 5702 // picture 5703 WebViewCore.pauseUpdatePicture(mWebViewCore); 5704 // fall through to TOUCH_DRAG_MODE 5705 } else { 5706 // WebKit may consume the touch event and modify 5707 // DOM. drawContentPicture() will be called with 5708 // animateSroll as true for better performance. 5709 // Force redraw in high-quality. 5710 invalidate(); 5711 break; 5712 } 5713 } else { 5714 if (mSelectingText) { 5715 // tapping on selection or controls does nothing 5716 if (!nativeHitSelection(contentX, contentY)) { 5717 selectionDone(); 5718 } 5719 break; 5720 } 5721 // only trigger double tap if the WebView is 5722 // scalable 5723 if (mTouchMode == TOUCH_INIT_MODE 5724 && (canZoomIn() || canZoomOut())) { 5725 mPrivateHandler.sendEmptyMessageDelayed( 5726 RELEASE_SINGLE_TAP, ViewConfiguration 5727 .getDoubleTapTimeout()); 5728 } else { 5729 doShortPress(); 5730 } 5731 break; 5732 } 5733 case TOUCH_DRAG_MODE: 5734 case TOUCH_DRAG_LAYER_MODE: 5735 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5736 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5737 // if the user waits a while w/o moving before the 5738 // up, we don't want to do a fling 5739 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5740 if (mVelocityTracker == null) { 5741 Log.e(LOGTAG, "Got null mVelocityTracker when " 5742 + "mPreventDefault = " 5743 + mPreventDefault 5744 + " mDeferTouchProcess = " 5745 + mDeferTouchProcess); 5746 } 5747 mVelocityTracker.addMovement(ev); 5748 // set to MOTIONLESS_IGNORE so that it won't keep 5749 // removing and sending message in 5750 // drawCoreAndCursorRing() 5751 mHeldMotionless = MOTIONLESS_IGNORE; 5752 doFling(); 5753 break; 5754 } else { 5755 if (mScroller.springBack(mScrollX, mScrollY, 0, 5756 computeMaxScrollX(), 0, 5757 computeMaxScrollY())) { 5758 invalidate(); 5759 } 5760 } 5761 // redraw in high-quality, as we're done dragging 5762 mHeldMotionless = MOTIONLESS_TRUE; 5763 invalidate(); 5764 // fall through 5765 case TOUCH_DRAG_START_MODE: 5766 // TOUCH_DRAG_START_MODE should not happen for the real 5767 // device as we almost certain will get a MOVE. But this 5768 // is possible on emulator. 5769 mLastVelocity = 0; 5770 WebViewCore.resumePriority(); 5771 if (!mSelectingText) { 5772 WebViewCore.resumeUpdatePicture(mWebViewCore); 5773 } 5774 break; 5775 } 5776 stopTouch(); 5777 break; 5778 } 5779 case MotionEvent.ACTION_CANCEL: { 5780 if (mTouchMode == TOUCH_DRAG_MODE) { 5781 mScroller.springBack(mScrollX, mScrollY, 0, 5782 computeMaxScrollX(), 0, computeMaxScrollY()); 5783 invalidate(); 5784 } 5785 cancelWebCoreTouchEvent(contentX, contentY, false); 5786 cancelTouch(); 5787 break; 5788 } 5789 } 5790 return true; 5791 } 5792 5793 private void passMultiTouchToWebKit(MotionEvent ev) { 5794 TouchEventData ted = new TouchEventData(); 5795 ted.mAction = ev.getAction() & MotionEvent.ACTION_MASK; 5796 final int count = ev.getPointerCount(); 5797 ted.mPoints = new Point[count]; 5798 for (int c = 0; c < count; c++) { 5799 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5800 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5801 ted.mPoints[c] = new Point(x, y); 5802 } 5803 ted.mMetaState = ev.getMetaState(); 5804 ted.mReprocess = mDeferTouchProcess; 5805 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5806 cancelLongPress(); 5807 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5808 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5809 } 5810 5811 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5812 if (shouldForwardTouchEvent()) { 5813 if (removeEvents) { 5814 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5815 } 5816 TouchEventData ted = new TouchEventData(); 5817 ted.mPoints = new Point[1]; 5818 ted.mPoints[0] = new Point(x, y); 5819 ted.mAction = MotionEvent.ACTION_CANCEL; 5820 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5821 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5822 } 5823 } 5824 5825 private void startTouch(float x, float y, long eventTime) { 5826 // Remember where the motion event started 5827 mLastTouchX = x; 5828 mLastTouchY = y; 5829 mLastTouchTime = eventTime; 5830 mVelocityTracker = VelocityTracker.obtain(); 5831 mSnapScrollMode = SNAP_NONE; 5832 } 5833 5834 private void startDrag() { 5835 WebViewCore.reducePriority(); 5836 // to get better performance, pause updating the picture 5837 WebViewCore.pauseUpdatePicture(mWebViewCore); 5838 if (!mDragFromTextInput) { 5839 nativeHideCursor(); 5840 } 5841 5842 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5843 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 5844 mZoomManager.invokeZoomPicker(); 5845 } 5846 } 5847 5848 private void doDrag(int deltaX, int deltaY) { 5849 if ((deltaX | deltaY) != 0) { 5850 int oldX = mScrollX; 5851 int oldY = mScrollY; 5852 int rangeX = computeMaxScrollX(); 5853 int rangeY = computeMaxScrollY(); 5854 int overscrollDistance = mOverscrollDistance; 5855 5856 // Check for the original scrolling layer in case we change 5857 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 5858 // reached the edge of a layer but mScrollingLayer will be non-zero 5859 // if we initiated the drag on a layer. 5860 if (mScrollingLayer != 0) { 5861 final int contentX = viewToContentDimension(deltaX); 5862 final int contentY = viewToContentDimension(deltaY); 5863 5864 // Check the scrolling bounds to see if we will actually do any 5865 // scrolling. The rectangle is in document coordinates. 5866 final int maxX = mScrollingLayerRect.right; 5867 final int maxY = mScrollingLayerRect.bottom; 5868 final int resultX = Math.max(0, 5869 Math.min(mScrollingLayerRect.left + contentX, maxX)); 5870 final int resultY = Math.max(0, 5871 Math.min(mScrollingLayerRect.top + contentY, maxY)); 5872 5873 if (resultX != mScrollingLayerRect.left || 5874 resultY != mScrollingLayerRect.top) { 5875 // In case we switched to dragging the page. 5876 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5877 deltaX = contentX; 5878 deltaY = contentY; 5879 oldX = mScrollingLayerRect.left; 5880 oldY = mScrollingLayerRect.top; 5881 rangeX = maxX; 5882 rangeY = maxY; 5883 } else { 5884 // Scroll the main page if we are not going to scroll the 5885 // layer. This does not reset mScrollingLayer in case the 5886 // user changes directions and the layer can scroll the 5887 // other way. 5888 mTouchMode = TOUCH_DRAG_MODE; 5889 } 5890 } 5891 5892 if (mOverScrollGlow != null) { 5893 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 5894 } 5895 5896 overScrollBy(deltaX, deltaY, oldX, oldY, 5897 rangeX, rangeY, 5898 mOverscrollDistance, mOverscrollDistance, true); 5899 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 5900 invalidate(); 5901 } 5902 } 5903 mZoomManager.keepZoomPickerVisible(); 5904 } 5905 5906 private void stopTouch() { 5907 // we also use mVelocityTracker == null to tell us that we are 5908 // not "moving around", so we can take the slower/prettier 5909 // mode in the drawing code 5910 if (mVelocityTracker != null) { 5911 mVelocityTracker.recycle(); 5912 mVelocityTracker = null; 5913 } 5914 5915 // Release any pulled glows 5916 if (mOverScrollGlow != null) { 5917 mOverScrollGlow.releaseAll(); 5918 } 5919 } 5920 5921 private void cancelTouch() { 5922 // we also use mVelocityTracker == null to tell us that we are 5923 // not "moving around", so we can take the slower/prettier 5924 // mode in the drawing code 5925 if (mVelocityTracker != null) { 5926 mVelocityTracker.recycle(); 5927 mVelocityTracker = null; 5928 } 5929 5930 if ((mTouchMode == TOUCH_DRAG_MODE 5931 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 5932 WebViewCore.resumePriority(); 5933 WebViewCore.resumeUpdatePicture(mWebViewCore); 5934 } 5935 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5936 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5937 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5938 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5939 if (getSettings().supportTouchOnly()) { 5940 removeTouchHighlight(true); 5941 } 5942 mHeldMotionless = MOTIONLESS_TRUE; 5943 mTouchMode = TOUCH_DONE_MODE; 5944 nativeHideCursor(); 5945 } 5946 5947 private long mTrackballFirstTime = 0; 5948 private long mTrackballLastTime = 0; 5949 private float mTrackballRemainsX = 0.0f; 5950 private float mTrackballRemainsY = 0.0f; 5951 private int mTrackballXMove = 0; 5952 private int mTrackballYMove = 0; 5953 private boolean mSelectingText = false; 5954 private boolean mSelectionStarted = false; 5955 private boolean mExtendSelection = false; 5956 private boolean mDrawSelectionPointer = false; 5957 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5958 private static final int TRACKBALL_TIMEOUT = 200; 5959 private static final int TRACKBALL_WAIT = 100; 5960 private static final int TRACKBALL_SCALE = 400; 5961 private static final int TRACKBALL_SCROLL_COUNT = 5; 5962 private static final int TRACKBALL_MOVE_COUNT = 10; 5963 private static final int TRACKBALL_MULTIPLIER = 3; 5964 private static final int SELECT_CURSOR_OFFSET = 16; 5965 private static final int SELECT_SCROLL = 5; 5966 private int mSelectX = 0; 5967 private int mSelectY = 0; 5968 private boolean mFocusSizeChanged = false; 5969 private boolean mTrackballDown = false; 5970 private long mTrackballUpTime = 0; 5971 private long mLastCursorTime = 0; 5972 private Rect mLastCursorBounds; 5973 5974 // Set by default; BrowserActivity clears to interpret trackball data 5975 // directly for movement. Currently, the framework only passes 5976 // arrow key events, not trackball events, from one child to the next 5977 private boolean mMapTrackballToArrowKeys = true; 5978 5979 public void setMapTrackballToArrowKeys(boolean setMap) { 5980 mMapTrackballToArrowKeys = setMap; 5981 } 5982 5983 void resetTrackballTime() { 5984 mTrackballLastTime = 0; 5985 } 5986 5987 @Override 5988 public boolean onTrackballEvent(MotionEvent ev) { 5989 long time = ev.getEventTime(); 5990 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5991 if (ev.getY() > 0) pageDown(true); 5992 if (ev.getY() < 0) pageUp(true); 5993 return true; 5994 } 5995 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5996 if (mSelectingText) { 5997 return true; // discard press if copy in progress 5998 } 5999 mTrackballDown = true; 6000 if (mNativeClass == 0) { 6001 return false; 6002 } 6003 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6004 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6005 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6006 nativeSelectBestAt(mLastCursorBounds); 6007 } 6008 if (DebugFlags.WEB_VIEW) { 6009 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6010 + " time=" + time 6011 + " mLastCursorTime=" + mLastCursorTime); 6012 } 6013 if (isInTouchMode()) requestFocusFromTouch(); 6014 return false; // let common code in onKeyDown at it 6015 } 6016 if (ev.getAction() == MotionEvent.ACTION_UP) { 6017 // LONG_PRESS_CENTER is set in common onKeyDown 6018 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6019 mTrackballDown = false; 6020 mTrackballUpTime = time; 6021 if (mSelectingText) { 6022 if (mExtendSelection) { 6023 copySelection(); 6024 selectionDone(); 6025 } else { 6026 mExtendSelection = true; 6027 nativeSetExtendSelection(); 6028 invalidate(); // draw the i-beam instead of the arrow 6029 } 6030 return true; // discard press if copy in progress 6031 } 6032 if (DebugFlags.WEB_VIEW) { 6033 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6034 + " time=" + time 6035 ); 6036 } 6037 return false; // let common code in onKeyUp at it 6038 } 6039 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6040 AccessibilityManager.getInstance(mContext).isEnabled()) { 6041 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6042 return false; 6043 } 6044 if (mTrackballDown) { 6045 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6046 return true; // discard move if trackball is down 6047 } 6048 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6049 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6050 return true; 6051 } 6052 // TODO: alternatively we can do panning as touch does 6053 switchOutDrawHistory(); 6054 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6055 if (DebugFlags.WEB_VIEW) { 6056 Log.v(LOGTAG, "onTrackballEvent time=" 6057 + time + " last=" + mTrackballLastTime); 6058 } 6059 mTrackballFirstTime = time; 6060 mTrackballXMove = mTrackballYMove = 0; 6061 } 6062 mTrackballLastTime = time; 6063 if (DebugFlags.WEB_VIEW) { 6064 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6065 } 6066 mTrackballRemainsX += ev.getX(); 6067 mTrackballRemainsY += ev.getY(); 6068 doTrackball(time, ev.getMetaState()); 6069 return true; 6070 } 6071 6072 void moveSelection(float xRate, float yRate) { 6073 if (mNativeClass == 0) 6074 return; 6075 int width = getViewWidth(); 6076 int height = getViewHeight(); 6077 mSelectX += xRate; 6078 mSelectY += yRate; 6079 int maxX = width + mScrollX; 6080 int maxY = height + mScrollY; 6081 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6082 , mSelectX)); 6083 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6084 , mSelectY)); 6085 if (DebugFlags.WEB_VIEW) { 6086 Log.v(LOGTAG, "moveSelection" 6087 + " mSelectX=" + mSelectX 6088 + " mSelectY=" + mSelectY 6089 + " mScrollX=" + mScrollX 6090 + " mScrollY=" + mScrollY 6091 + " xRate=" + xRate 6092 + " yRate=" + yRate 6093 ); 6094 } 6095 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6096 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6097 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6098 : 0; 6099 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6100 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6101 : 0; 6102 pinScrollBy(scrollX, scrollY, true, 0); 6103 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6104 requestRectangleOnScreen(select); 6105 invalidate(); 6106 } 6107 6108 private int scaleTrackballX(float xRate, int width) { 6109 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6110 int nextXMove = xMove; 6111 if (xMove > 0) { 6112 if (xMove > mTrackballXMove) { 6113 xMove -= mTrackballXMove; 6114 } 6115 } else if (xMove < mTrackballXMove) { 6116 xMove -= mTrackballXMove; 6117 } 6118 mTrackballXMove = nextXMove; 6119 return xMove; 6120 } 6121 6122 private int scaleTrackballY(float yRate, int height) { 6123 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6124 int nextYMove = yMove; 6125 if (yMove > 0) { 6126 if (yMove > mTrackballYMove) { 6127 yMove -= mTrackballYMove; 6128 } 6129 } else if (yMove < mTrackballYMove) { 6130 yMove -= mTrackballYMove; 6131 } 6132 mTrackballYMove = nextYMove; 6133 return yMove; 6134 } 6135 6136 private int keyCodeToSoundsEffect(int keyCode) { 6137 switch(keyCode) { 6138 case KeyEvent.KEYCODE_DPAD_UP: 6139 return SoundEffectConstants.NAVIGATION_UP; 6140 case KeyEvent.KEYCODE_DPAD_RIGHT: 6141 return SoundEffectConstants.NAVIGATION_RIGHT; 6142 case KeyEvent.KEYCODE_DPAD_DOWN: 6143 return SoundEffectConstants.NAVIGATION_DOWN; 6144 case KeyEvent.KEYCODE_DPAD_LEFT: 6145 return SoundEffectConstants.NAVIGATION_LEFT; 6146 } 6147 throw new IllegalArgumentException("keyCode must be one of " + 6148 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6149 "KEYCODE_DPAD_LEFT}."); 6150 } 6151 6152 private void doTrackball(long time, int metaState) { 6153 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6154 if (elapsed == 0) { 6155 elapsed = TRACKBALL_TIMEOUT; 6156 } 6157 float xRate = mTrackballRemainsX * 1000 / elapsed; 6158 float yRate = mTrackballRemainsY * 1000 / elapsed; 6159 int viewWidth = getViewWidth(); 6160 int viewHeight = getViewHeight(); 6161 if (mSelectingText) { 6162 if (!mDrawSelectionPointer) { 6163 // The last selection was made by touch, disabling drawing the 6164 // selection pointer. Allow the trackball to adjust the 6165 // position of the touch control. 6166 mSelectX = contentToViewX(nativeSelectionX()); 6167 mSelectY = contentToViewY(nativeSelectionY()); 6168 mDrawSelectionPointer = mExtendSelection = true; 6169 nativeSetExtendSelection(); 6170 } 6171 moveSelection(scaleTrackballX(xRate, viewWidth), 6172 scaleTrackballY(yRate, viewHeight)); 6173 mTrackballRemainsX = mTrackballRemainsY = 0; 6174 return; 6175 } 6176 float ax = Math.abs(xRate); 6177 float ay = Math.abs(yRate); 6178 float maxA = Math.max(ax, ay); 6179 if (DebugFlags.WEB_VIEW) { 6180 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6181 + " xRate=" + xRate 6182 + " yRate=" + yRate 6183 + " mTrackballRemainsX=" + mTrackballRemainsX 6184 + " mTrackballRemainsY=" + mTrackballRemainsY); 6185 } 6186 int width = mContentWidth - viewWidth; 6187 int height = mContentHeight - viewHeight; 6188 if (width < 0) width = 0; 6189 if (height < 0) height = 0; 6190 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6191 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6192 maxA = Math.max(ax, ay); 6193 int count = Math.max(0, (int) maxA); 6194 int oldScrollX = mScrollX; 6195 int oldScrollY = mScrollY; 6196 if (count > 0) { 6197 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6198 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6199 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6200 KeyEvent.KEYCODE_DPAD_RIGHT; 6201 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6202 if (DebugFlags.WEB_VIEW) { 6203 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6204 + " count=" + count 6205 + " mTrackballRemainsX=" + mTrackballRemainsX 6206 + " mTrackballRemainsY=" + mTrackballRemainsY); 6207 } 6208 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6209 for (int i = 0; i < count; i++) { 6210 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6211 } 6212 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6213 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6214 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6215 } 6216 mTrackballRemainsX = mTrackballRemainsY = 0; 6217 } 6218 if (count >= TRACKBALL_SCROLL_COUNT) { 6219 int xMove = scaleTrackballX(xRate, width); 6220 int yMove = scaleTrackballY(yRate, height); 6221 if (DebugFlags.WEB_VIEW) { 6222 Log.v(LOGTAG, "doTrackball pinScrollBy" 6223 + " count=" + count 6224 + " xMove=" + xMove + " yMove=" + yMove 6225 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6226 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6227 ); 6228 } 6229 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6230 xMove = 0; 6231 } 6232 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6233 yMove = 0; 6234 } 6235 if (xMove != 0 || yMove != 0) { 6236 pinScrollBy(xMove, yMove, true, 0); 6237 } 6238 mUserScroll = true; 6239 } 6240 } 6241 6242 /** 6243 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6244 * @return Maximum horizontal scroll position within real content 6245 */ 6246 int computeMaxScrollX() { 6247 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6248 } 6249 6250 /** 6251 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6252 * @return Maximum vertical scroll position within real content 6253 */ 6254 int computeMaxScrollY() { 6255 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6256 - getViewHeightWithTitle(), 0); 6257 } 6258 6259 boolean updateScrollCoordinates(int x, int y) { 6260 int oldX = mScrollX; 6261 int oldY = mScrollY; 6262 mScrollX = x; 6263 mScrollY = y; 6264 if (oldX != mScrollX || oldY != mScrollY) { 6265 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6266 return true; 6267 } else { 6268 return false; 6269 } 6270 } 6271 6272 public void flingScroll(int vx, int vy) { 6273 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6274 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6275 invalidate(); 6276 } 6277 6278 private void doFling() { 6279 if (mVelocityTracker == null) { 6280 return; 6281 } 6282 int maxX = computeMaxScrollX(); 6283 int maxY = computeMaxScrollY(); 6284 6285 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6286 int vx = (int) mVelocityTracker.getXVelocity(); 6287 int vy = (int) mVelocityTracker.getYVelocity(); 6288 6289 int scrollX = mScrollX; 6290 int scrollY = mScrollY; 6291 int overscrollDistance = mOverscrollDistance; 6292 int overflingDistance = mOverflingDistance; 6293 6294 // Use the layer's scroll data if applicable. 6295 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6296 scrollX = mScrollingLayerRect.left; 6297 scrollY = mScrollingLayerRect.top; 6298 maxX = mScrollingLayerRect.right; 6299 maxY = mScrollingLayerRect.bottom; 6300 // No overscrolling for layers. 6301 overscrollDistance = overflingDistance = 0; 6302 } 6303 6304 if (mSnapScrollMode != SNAP_NONE) { 6305 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6306 vy = 0; 6307 } else { 6308 vx = 0; 6309 } 6310 } 6311 if (true /* EMG release: make our fling more like Maps' */) { 6312 // maps cuts their velocity in half 6313 vx = vx * 3 / 4; 6314 vy = vy * 3 / 4; 6315 } 6316 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6317 WebViewCore.resumePriority(); 6318 if (!mSelectingText) { 6319 WebViewCore.resumeUpdatePicture(mWebViewCore); 6320 } 6321 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6322 invalidate(); 6323 } 6324 return; 6325 } 6326 float currentVelocity = mScroller.getCurrVelocity(); 6327 float velocity = (float) Math.hypot(vx, vy); 6328 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6329 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6330 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6331 - Math.atan2(vy, vx))); 6332 final float circle = (float) (Math.PI) * 2.0f; 6333 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6334 vx += currentVelocity * mLastVelX / mLastVelocity; 6335 vy += currentVelocity * mLastVelY / mLastVelocity; 6336 velocity = (float) Math.hypot(vx, vy); 6337 if (DebugFlags.WEB_VIEW) { 6338 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6339 } 6340 } else if (DebugFlags.WEB_VIEW) { 6341 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6342 } 6343 } else if (DebugFlags.WEB_VIEW) { 6344 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6345 + " current=" + currentVelocity 6346 + " vx=" + vx + " vy=" + vy 6347 + " maxX=" + maxX + " maxY=" + maxY 6348 + " scrollX=" + scrollX + " scrollY=" + scrollY 6349 + " layer=" + mScrollingLayer); 6350 } 6351 6352 // Allow sloppy flings without overscrolling at the edges. 6353 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6354 vx = 0; 6355 } 6356 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6357 vy = 0; 6358 } 6359 6360 if (overscrollDistance < overflingDistance) { 6361 if ((vx > 0 && scrollX == -overscrollDistance) || 6362 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6363 vx = 0; 6364 } 6365 if ((vy > 0 && scrollY == -overscrollDistance) || 6366 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6367 vy = 0; 6368 } 6369 } 6370 6371 mLastVelX = vx; 6372 mLastVelY = vy; 6373 mLastVelocity = velocity; 6374 6375 // no horizontal overscroll if the content just fits 6376 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6377 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6378 // Duration is calculated based on velocity. With range boundaries and overscroll 6379 // we may not know how long the final animation will take. (Hence the deprecation 6380 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6381 // resumes during this effect we will take a performance hit. See computeScroll; 6382 // we resume webcore there when the animation is finished. 6383 final int time = mScroller.getDuration(); 6384 6385 // Suppress scrollbars for layer scrolling. 6386 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6387 awakenScrollBars(time); 6388 } 6389 6390 invalidate(); 6391 } 6392 6393 /** 6394 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6395 * in charge of installing this view to the view hierarchy. This view will 6396 * become visible when the user starts scrolling via touch and fade away if 6397 * the user does not interact with it. 6398 * <p/> 6399 * API version 3 introduces a built-in zoom mechanism that is shown 6400 * automatically by the MapView. This is the preferred approach for 6401 * showing the zoom UI. 6402 * 6403 * @deprecated The built-in zoom mechanism is preferred, see 6404 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6405 */ 6406 @Deprecated 6407 public View getZoomControls() { 6408 if (!getSettings().supportZoom()) { 6409 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6410 return null; 6411 } 6412 return mZoomManager.getExternalZoomPicker(); 6413 } 6414 6415 void dismissZoomControl() { 6416 mZoomManager.dismissZoomPicker(); 6417 } 6418 6419 float getDefaultZoomScale() { 6420 return mZoomManager.getDefaultScale(); 6421 } 6422 6423 /** 6424 * @return TRUE if the WebView can be zoomed in. 6425 */ 6426 public boolean canZoomIn() { 6427 return mZoomManager.canZoomIn(); 6428 } 6429 6430 /** 6431 * @return TRUE if the WebView can be zoomed out. 6432 */ 6433 public boolean canZoomOut() { 6434 return mZoomManager.canZoomOut(); 6435 } 6436 6437 /** 6438 * Perform zoom in in the webview 6439 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6440 */ 6441 public boolean zoomIn() { 6442 return mZoomManager.zoomIn(); 6443 } 6444 6445 /** 6446 * Perform zoom out in the webview 6447 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6448 */ 6449 public boolean zoomOut() { 6450 return mZoomManager.zoomOut(); 6451 } 6452 6453 private void updateSelection() { 6454 if (mNativeClass == 0) { 6455 return; 6456 } 6457 // mLastTouchX and mLastTouchY are the point in the current viewport 6458 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6459 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6460 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6461 contentX + mNavSlop, contentY + mNavSlop); 6462 nativeSelectBestAt(rect); 6463 mInitialHitTestResult = hitTestResult(null); 6464 } 6465 6466 /** 6467 * Scroll the focused text field/area to match the WebTextView 6468 * @param xPercent New x position of the WebTextView from 0 to 1. 6469 * @param y New y position of the WebTextView in view coordinates 6470 */ 6471 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 6472 if (!inEditingMode() || mWebViewCore == null) { 6473 return; 6474 } 6475 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 6476 // Since this position is relative to the top of the text input 6477 // field, we do not need to take the title bar's height into 6478 // consideration. 6479 viewToContentDimension(y), 6480 new Float(xPercent)); 6481 } 6482 6483 /** 6484 * Set our starting point and time for a drag from the WebTextView. 6485 */ 6486 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6487 if (!inEditingMode()) { 6488 return; 6489 } 6490 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 6491 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 6492 mLastTouchTime = eventTime; 6493 if (!mScroller.isFinished()) { 6494 abortAnimation(); 6495 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6496 } 6497 mSnapScrollMode = SNAP_NONE; 6498 mVelocityTracker = VelocityTracker.obtain(); 6499 mTouchMode = TOUCH_DRAG_START_MODE; 6500 } 6501 6502 /** 6503 * Given a motion event from the WebTextView, set its location to our 6504 * coordinates, and handle the event. 6505 */ 6506 /*package*/ boolean textFieldDrag(MotionEvent event) { 6507 if (!inEditingMode()) { 6508 return false; 6509 } 6510 mDragFromTextInput = true; 6511 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6512 (float) (mWebTextView.getTop() - mScrollY)); 6513 boolean result = onTouchEvent(event); 6514 mDragFromTextInput = false; 6515 return result; 6516 } 6517 6518 /** 6519 * Due a touch up from a WebTextView. This will be handled by webkit to 6520 * change the selection. 6521 * @param event MotionEvent in the WebTextView's coordinates. 6522 */ 6523 /*package*/ void touchUpOnTextField(MotionEvent event) { 6524 if (!inEditingMode()) { 6525 return; 6526 } 6527 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6528 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6529 nativeMotionUp(x, y, mNavSlop); 6530 } 6531 6532 /** 6533 * Called when pressing the center key or trackball on a textfield. 6534 */ 6535 /*package*/ void centerKeyPressOnTextField() { 6536 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6537 nativeCursorNodePointer()); 6538 } 6539 6540 private void doShortPress() { 6541 if (mNativeClass == 0) { 6542 return; 6543 } 6544 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6545 return; 6546 } 6547 mTouchMode = TOUCH_DONE_MODE; 6548 switchOutDrawHistory(); 6549 // mLastTouchX and mLastTouchY are the point in the current viewport 6550 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6551 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6552 if (getSettings().supportTouchOnly()) { 6553 removeTouchHighlight(false); 6554 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6555 // use "0" as generation id to inform WebKit to use the same x/y as 6556 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6557 touchUpData.mMoveGeneration = 0; 6558 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6559 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6560 WebViewCore.MotionUpData motionUpData = new WebViewCore 6561 .MotionUpData(); 6562 motionUpData.mFrame = nativeCacheHitFramePointer(); 6563 motionUpData.mNode = nativeCacheHitNodePointer(); 6564 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6565 motionUpData.mX = contentX; 6566 motionUpData.mY = contentY; 6567 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6568 motionUpData); 6569 } else { 6570 doMotionUp(contentX, contentY); 6571 } 6572 } 6573 6574 private void doMotionUp(int contentX, int contentY) { 6575 if (nativeMotionUp(contentX, contentY, mNavSlop) && mLogEvent) { 6576 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6577 } 6578 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6579 playSoundEffect(SoundEffectConstants.CLICK); 6580 } 6581 } 6582 6583 /* 6584 * Return true if the view (Plugin) is fully visible and maximized inside 6585 * the WebView. 6586 */ 6587 boolean isPluginFitOnScreen(ViewManager.ChildView view) { 6588 final int viewWidth = getViewWidth(); 6589 final int viewHeight = getViewHeightWithTitle(); 6590 float scale = Math.min((float) viewWidth / view.width, (float) viewHeight / view.height); 6591 scale = mZoomManager.computeScaleWithLimits(scale); 6592 return !mZoomManager.willScaleTriggerZoom(scale) 6593 && contentToViewX(view.x) >= mScrollX 6594 && contentToViewX(view.x + view.width) <= mScrollX + viewWidth 6595 && contentToViewY(view.y) >= mScrollY 6596 && contentToViewY(view.y + view.height) <= mScrollY + viewHeight; 6597 } 6598 6599 /* 6600 * Maximize and center the rectangle, specified in the document coordinate 6601 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6602 * animated scroll to center it. If the zoom needs to be changed, find the 6603 * zoom center and do a smooth zoom transition. 6604 */ 6605 void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 6606 int viewWidth = getViewWidth(); 6607 int viewHeight = getViewHeightWithTitle(); 6608 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 6609 / docHeight); 6610 scale = mZoomManager.computeScaleWithLimits(scale); 6611 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6612 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 6613 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 6614 true, 0); 6615 } else { 6616 float actualScale = mZoomManager.getScale(); 6617 float oldScreenX = docX * actualScale - mScrollX; 6618 float rectViewX = docX * scale; 6619 float rectViewWidth = docWidth * scale; 6620 float newMaxWidth = mContentWidth * scale; 6621 float newScreenX = (viewWidth - rectViewWidth) / 2; 6622 // pin the newX to the WebView 6623 if (newScreenX > rectViewX) { 6624 newScreenX = rectViewX; 6625 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6626 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6627 } 6628 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6629 / (scale - actualScale); 6630 float oldScreenY = docY * actualScale + getTitleHeight() 6631 - mScrollY; 6632 float rectViewY = docY * scale + getTitleHeight(); 6633 float rectViewHeight = docHeight * scale; 6634 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6635 float newScreenY = (viewHeight - rectViewHeight) / 2; 6636 // pin the newY to the WebView 6637 if (newScreenY > rectViewY) { 6638 newScreenY = rectViewY; 6639 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6640 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6641 } 6642 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6643 / (scale - actualScale); 6644 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6645 mZoomManager.startZoomAnimation(scale, false); 6646 } 6647 } 6648 6649 // Called by JNI to handle a touch on a node representing an email address, 6650 // address, or phone number 6651 private void overrideLoading(String url) { 6652 mCallbackProxy.uiOverrideUrlLoading(url); 6653 } 6654 6655 @Override 6656 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6657 // FIXME: If a subwindow is showing find, and the user touches the 6658 // background window, it can steal focus. 6659 if (mFindIsUp) return false; 6660 boolean result = false; 6661 if (inEditingMode()) { 6662 result = mWebTextView.requestFocus(direction, 6663 previouslyFocusedRect); 6664 } else { 6665 result = super.requestFocus(direction, previouslyFocusedRect); 6666 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6667 // For cases such as GMail, where we gain focus from a direction, 6668 // we want to move to the first available link. 6669 // FIXME: If there are no visible links, we may not want to 6670 int fakeKeyDirection = 0; 6671 switch(direction) { 6672 case View.FOCUS_UP: 6673 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6674 break; 6675 case View.FOCUS_DOWN: 6676 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6677 break; 6678 case View.FOCUS_LEFT: 6679 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6680 break; 6681 case View.FOCUS_RIGHT: 6682 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6683 break; 6684 default: 6685 return result; 6686 } 6687 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6688 navHandledKey(fakeKeyDirection, 1, true, 0); 6689 } 6690 } 6691 } 6692 return result; 6693 } 6694 6695 @Override 6696 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6697 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6698 6699 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6700 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6701 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6702 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6703 6704 int measuredHeight = heightSize; 6705 int measuredWidth = widthSize; 6706 6707 // Grab the content size from WebViewCore. 6708 int contentHeight = contentToViewDimension(mContentHeight); 6709 int contentWidth = contentToViewDimension(mContentWidth); 6710 6711// Log.d(LOGTAG, "------- measure " + heightMode); 6712 6713 if (heightMode != MeasureSpec.EXACTLY) { 6714 mHeightCanMeasure = true; 6715 measuredHeight = contentHeight; 6716 if (heightMode == MeasureSpec.AT_MOST) { 6717 // If we are larger than the AT_MOST height, then our height can 6718 // no longer be measured and we should scroll internally. 6719 if (measuredHeight > heightSize) { 6720 measuredHeight = heightSize; 6721 mHeightCanMeasure = false; 6722 } else if (measuredHeight < heightSize) { 6723 measuredHeight |= MEASURED_STATE_TOO_SMALL; 6724 } 6725 } 6726 } else { 6727 mHeightCanMeasure = false; 6728 } 6729 if (mNativeClass != 0) { 6730 nativeSetHeightCanMeasure(mHeightCanMeasure); 6731 } 6732 // For the width, always use the given size unless unspecified. 6733 if (widthMode == MeasureSpec.UNSPECIFIED) { 6734 mWidthCanMeasure = true; 6735 measuredWidth = contentWidth; 6736 } else { 6737 if (measuredWidth < contentWidth) { 6738 measuredWidth |= MEASURED_STATE_TOO_SMALL; 6739 } 6740 mWidthCanMeasure = false; 6741 } 6742 6743 synchronized (this) { 6744 setMeasuredDimension(measuredWidth, measuredHeight); 6745 } 6746 } 6747 6748 @Override 6749 public boolean requestChildRectangleOnScreen(View child, 6750 Rect rect, 6751 boolean immediate) { 6752 if (mNativeClass == 0) { 6753 return false; 6754 } 6755 // don't scroll while in zoom animation. When it is done, we will adjust 6756 // the necessary components (e.g., WebTextView if it is in editing mode) 6757 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6758 return false; 6759 } 6760 6761 rect.offset(child.getLeft() - child.getScrollX(), 6762 child.getTop() - child.getScrollY()); 6763 6764 Rect content = new Rect(viewToContentX(mScrollX), 6765 viewToContentY(mScrollY), 6766 viewToContentX(mScrollX + getWidth() 6767 - getVerticalScrollbarWidth()), 6768 viewToContentY(mScrollY + getViewHeightWithTitle())); 6769 content = nativeSubtractLayers(content); 6770 int screenTop = contentToViewY(content.top); 6771 int screenBottom = contentToViewY(content.bottom); 6772 int height = screenBottom - screenTop; 6773 int scrollYDelta = 0; 6774 6775 if (rect.bottom > screenBottom) { 6776 int oneThirdOfScreenHeight = height / 3; 6777 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6778 // If the rectangle is too tall to fit in the bottom two thirds 6779 // of the screen, place it at the top. 6780 scrollYDelta = rect.top - screenTop; 6781 } else { 6782 // If the rectangle will still fit on screen, we want its 6783 // top to be in the top third of the screen. 6784 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6785 } 6786 } else if (rect.top < screenTop) { 6787 scrollYDelta = rect.top - screenTop; 6788 } 6789 6790 int screenLeft = contentToViewX(content.left); 6791 int screenRight = contentToViewX(content.right); 6792 int width = screenRight - screenLeft; 6793 int scrollXDelta = 0; 6794 6795 if (rect.right > screenRight && rect.left > screenLeft) { 6796 if (rect.width() > width) { 6797 scrollXDelta += (rect.left - screenLeft); 6798 } else { 6799 scrollXDelta += (rect.right - screenRight); 6800 } 6801 } else if (rect.left < screenLeft) { 6802 scrollXDelta -= (screenLeft - rect.left); 6803 } 6804 6805 if ((scrollYDelta | scrollXDelta) != 0) { 6806 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6807 } 6808 6809 return false; 6810 } 6811 6812 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6813 String replace, int newStart, int newEnd) { 6814 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6815 arg.mReplace = replace; 6816 arg.mNewStart = newStart; 6817 arg.mNewEnd = newEnd; 6818 mTextGeneration++; 6819 arg.mTextGeneration = mTextGeneration; 6820 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6821 } 6822 6823 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6824 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6825 arg.mEvent = event; 6826 arg.mCurrentText = currentText; 6827 // Increase our text generation number, and pass it to webcore thread 6828 mTextGeneration++; 6829 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6830 // WebKit's document state is not saved until about to leave the page. 6831 // To make sure the host application, like Browser, has the up to date 6832 // document state when it goes to background, we force to save the 6833 // document state. 6834 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6835 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6836 cursorData(), 1000); 6837 } 6838 6839 /* package */ synchronized WebViewCore getWebViewCore() { 6840 return mWebViewCore; 6841 } 6842 6843 //------------------------------------------------------------------------- 6844 // Methods can be called from a separate thread, like WebViewCore 6845 // If it needs to call the View system, it has to send message. 6846 //------------------------------------------------------------------------- 6847 6848 /** 6849 * General handler to receive message coming from webkit thread 6850 */ 6851 class PrivateHandler extends Handler { 6852 @Override 6853 public void handleMessage(Message msg) { 6854 // exclude INVAL_RECT_MSG_ID since it is frequently output 6855 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6856 if (msg.what >= FIRST_PRIVATE_MSG_ID 6857 && msg.what <= LAST_PRIVATE_MSG_ID) { 6858 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6859 - FIRST_PRIVATE_MSG_ID]); 6860 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6861 && msg.what <= LAST_PACKAGE_MSG_ID) { 6862 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6863 - FIRST_PACKAGE_MSG_ID]); 6864 } else { 6865 Log.v(LOGTAG, Integer.toString(msg.what)); 6866 } 6867 } 6868 if (mWebViewCore == null) { 6869 // after WebView's destroy() is called, skip handling messages. 6870 return; 6871 } 6872 switch (msg.what) { 6873 case REMEMBER_PASSWORD: { 6874 mDatabase.setUsernamePassword( 6875 msg.getData().getString("host"), 6876 msg.getData().getString("username"), 6877 msg.getData().getString("password")); 6878 ((Message) msg.obj).sendToTarget(); 6879 break; 6880 } 6881 case NEVER_REMEMBER_PASSWORD: { 6882 mDatabase.setUsernamePassword( 6883 msg.getData().getString("host"), null, null); 6884 ((Message) msg.obj).sendToTarget(); 6885 break; 6886 } 6887 case PREVENT_DEFAULT_TIMEOUT: { 6888 // if timeout happens, cancel it so that it won't block UI 6889 // to continue handling touch events 6890 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6891 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6892 || (msg.arg1 == MotionEvent.ACTION_MOVE 6893 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6894 cancelWebCoreTouchEvent( 6895 viewToContentX((int) mLastTouchX + mScrollX), 6896 viewToContentY((int) mLastTouchY + mScrollY), 6897 true); 6898 } 6899 break; 6900 } 6901 case SCROLL_SELECT_TEXT: { 6902 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 6903 mSentAutoScrollMessage = false; 6904 break; 6905 } 6906 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 6907 sendEmptyMessageDelayed( 6908 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6909 break; 6910 } 6911 case SWITCH_TO_SHORTPRESS: { 6912 mInitialHitTestResult = null; // set by updateSelection() 6913 if (mTouchMode == TOUCH_INIT_MODE) { 6914 if (!getSettings().supportTouchOnly() 6915 && mPreventDefault != PREVENT_DEFAULT_YES) { 6916 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6917 updateSelection(); 6918 } else { 6919 // set to TOUCH_SHORTPRESS_MODE so that it won't 6920 // trigger double tap any more 6921 mTouchMode = TOUCH_SHORTPRESS_MODE; 6922 } 6923 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6924 mTouchMode = TOUCH_DONE_MODE; 6925 } 6926 break; 6927 } 6928 case SWITCH_TO_LONGPRESS: { 6929 if (getSettings().supportTouchOnly()) { 6930 removeTouchHighlight(false); 6931 } 6932 if (inFullScreenMode() || mDeferTouchProcess) { 6933 TouchEventData ted = new TouchEventData(); 6934 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6935 ted.mPoints = new Point[1]; 6936 ted.mPoints[0] = new Point(viewToContentX((int) mLastTouchX + mScrollX), 6937 viewToContentY((int) mLastTouchY + mScrollY)); 6938 // metaState for long press is tricky. Should it be the 6939 // state when the press started or when the press was 6940 // released? Or some intermediary key state? For 6941 // simplicity for now, we don't set it. 6942 ted.mMetaState = 0; 6943 ted.mReprocess = mDeferTouchProcess; 6944 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6945 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6946 mTouchMode = TOUCH_DONE_MODE; 6947 performLongClick(); 6948 } 6949 break; 6950 } 6951 case RELEASE_SINGLE_TAP: { 6952 doShortPress(); 6953 break; 6954 } 6955 case SCROLL_BY_MSG_ID: 6956 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6957 break; 6958 case SYNC_SCROLL_TO_MSG_ID: 6959 if (mUserScroll) { 6960 // if user has scrolled explicitly, don't sync the 6961 // scroll position any more 6962 mUserScroll = false; 6963 break; 6964 } 6965 setContentScrollTo(msg.arg1, msg.arg2); 6966 break; 6967 case SCROLL_TO_MSG_ID: 6968 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6969 // if we can't scroll to the exact position due to pin, 6970 // send a message to WebCore to re-scroll when we get a 6971 // new picture 6972 mUserScroll = false; 6973 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6974 msg.arg1, msg.arg2); 6975 } 6976 break; 6977 case SPAWN_SCROLL_TO_MSG_ID: 6978 spawnContentScrollTo(msg.arg1, msg.arg2); 6979 break; 6980 case UPDATE_ZOOM_RANGE: { 6981 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 6982 // mScrollX contains the new minPrefWidth 6983 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 6984 break; 6985 } 6986 case REPLACE_BASE_CONTENT: { 6987 nativeReplaceBaseContent(msg.arg1); 6988 break; 6989 } 6990 case NEW_PICTURE_MSG_ID: { 6991 // called for new content 6992 mUserScroll = false; 6993 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 6994 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion.getBounds()); 6995 final Point viewSize = draw.mViewSize; 6996 WebViewCore.ViewState viewState = draw.mViewState; 6997 boolean isPictureAfterFirstLayout = viewState != null; 6998 if (isPictureAfterFirstLayout) { 6999 // Reset the last sent data here since dealing with new page. 7000 mLastWidthSent = 0; 7001 mZoomManager.onFirstLayout(draw); 7002 if (!mDrawHistory) { 7003 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7004 // As we are on a new page, remove the WebTextView. This 7005 // is necessary for page loads driven by webkit, and in 7006 // particular when the user was on a password field, so 7007 // the WebTextView was visible. 7008 clearTextEntry(); 7009 } 7010 } 7011 7012 // We update the layout (i.e. request a layout from the 7013 // view system) if the last view size that we sent to 7014 // WebCore matches the view size of the picture we just 7015 // received in the fixed dimension. 7016 final boolean updateLayout = viewSize.x == mLastWidthSent 7017 && viewSize.y == mLastHeightSent; 7018 recordNewContentSize(draw.mContentSize.x, 7019 draw.mContentSize.y, updateLayout); 7020 if (DebugFlags.WEB_VIEW) { 7021 Rect b = draw.mInvalRegion.getBounds(); 7022 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 7023 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 7024 } 7025 invalidateContentRect(draw.mInvalRegion.getBounds()); 7026 7027 if (mPictureListener != null) { 7028 mPictureListener.onNewPicture(WebView.this, capturePicture()); 7029 } 7030 7031 // update the zoom information based on the new picture 7032 mZoomManager.onNewPicture(draw); 7033 7034 if (draw.mFocusSizeChanged && inEditingMode()) { 7035 mFocusSizeChanged = true; 7036 } 7037 if (isPictureAfterFirstLayout) { 7038 mViewManager.postReadyToDrawAll(); 7039 } 7040 break; 7041 } 7042 case WEBCORE_INITIALIZED_MSG_ID: 7043 // nativeCreate sets mNativeClass to a non-zero value 7044 nativeCreate(msg.arg1); 7045 break; 7046 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7047 // Make sure that the textfield is currently focused 7048 // and representing the same node as the pointer. 7049 if (inEditingMode() && 7050 mWebTextView.isSameTextField(msg.arg1)) { 7051 if (msg.getData().getBoolean("password")) { 7052 Spannable text = (Spannable) mWebTextView.getText(); 7053 int start = Selection.getSelectionStart(text); 7054 int end = Selection.getSelectionEnd(text); 7055 mWebTextView.setInPassword(true); 7056 // Restore the selection, which may have been 7057 // ruined by setInPassword. 7058 Spannable pword = 7059 (Spannable) mWebTextView.getText(); 7060 Selection.setSelection(pword, start, end); 7061 // If the text entry has created more events, ignore 7062 // this one. 7063 } else if (msg.arg2 == mTextGeneration) { 7064 String text = (String) msg.obj; 7065 if (null == text) { 7066 text = ""; 7067 } 7068 mWebTextView.setTextAndKeepSelection(text); 7069 } 7070 } 7071 break; 7072 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 7073 displaySoftKeyboard(true); 7074 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 7075 case UPDATE_TEXT_SELECTION_MSG_ID: 7076 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7077 (WebViewCore.TextSelectionData) msg.obj); 7078 break; 7079 case FORM_DID_BLUR: 7080 if (inEditingMode() 7081 && mWebTextView.isSameTextField(msg.arg1)) { 7082 hideSoftKeyboard(); 7083 } 7084 break; 7085 case RETURN_LABEL: 7086 if (inEditingMode() 7087 && mWebTextView.isSameTextField(msg.arg1)) { 7088 mWebTextView.setHint((String) msg.obj); 7089 InputMethodManager imm 7090 = InputMethodManager.peekInstance(); 7091 // The hint is propagated to the IME in 7092 // onCreateInputConnection. If the IME is already 7093 // active, restart it so that its hint text is updated. 7094 if (imm != null && imm.isActive(mWebTextView)) { 7095 imm.restartInput(mWebTextView); 7096 } 7097 } 7098 break; 7099 case UNHANDLED_NAV_KEY: 7100 navHandledKey(msg.arg1, 1, false, 0); 7101 break; 7102 case UPDATE_TEXT_ENTRY_MSG_ID: 7103 // this is sent after finishing resize in WebViewCore. Make 7104 // sure the text edit box is still on the screen. 7105 if (inEditingMode() && nativeCursorIsTextInput()) { 7106 mWebTextView.bringIntoView(); 7107 rebuildWebTextView(); 7108 } 7109 break; 7110 case CLEAR_TEXT_ENTRY: 7111 clearTextEntry(); 7112 break; 7113 case INVAL_RECT_MSG_ID: { 7114 Rect r = (Rect)msg.obj; 7115 if (r == null) { 7116 invalidate(); 7117 } else { 7118 // we need to scale r from content into view coords, 7119 // which viewInvalidate() does for us 7120 viewInvalidate(r.left, r.top, r.right, r.bottom); 7121 } 7122 break; 7123 } 7124 case REQUEST_FORM_DATA: 7125 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7126 if (mWebTextView.isSameTextField(msg.arg1)) { 7127 mWebTextView.setAdapterCustom(adapter); 7128 } 7129 break; 7130 case RESUME_WEBCORE_PRIORITY: 7131 WebViewCore.resumePriority(); 7132 WebViewCore.resumeUpdatePicture(mWebViewCore); 7133 break; 7134 7135 case LONG_PRESS_CENTER: 7136 // as this is shared by keydown and trackballdown, reset all 7137 // the states 7138 mGotCenterDown = false; 7139 mTrackballDown = false; 7140 performLongClick(); 7141 break; 7142 7143 case WEBCORE_NEED_TOUCH_EVENTS: 7144 mForwardTouchEvents = (msg.arg1 != 0); 7145 break; 7146 7147 case PREVENT_TOUCH_ID: 7148 if (inFullScreenMode()) { 7149 break; 7150 } 7151 if (msg.obj == null) { 7152 if (msg.arg1 == MotionEvent.ACTION_DOWN 7153 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7154 // if prevent default is called from WebCore, UI 7155 // will not handle the rest of the touch events any 7156 // more. 7157 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7158 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7159 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7160 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7161 // the return for the first ACTION_MOVE will decide 7162 // whether UI will handle touch or not. Currently no 7163 // support for alternating prevent default 7164 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7165 : PREVENT_DEFAULT_NO; 7166 } 7167 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7168 mTouchHighlightRegion.setEmpty(); 7169 } 7170 } else if (msg.arg2 == 0) { 7171 // prevent default is not called in WebCore, so the 7172 // message needs to be reprocessed in UI 7173 TouchEventData ted = (TouchEventData) msg.obj; 7174 switch (ted.mAction) { 7175 case MotionEvent.ACTION_DOWN: 7176 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 7177 - mScrollX; 7178 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 7179 - mScrollY; 7180 mDeferTouchMode = TOUCH_INIT_MODE; 7181 break; 7182 case MotionEvent.ACTION_MOVE: { 7183 // no snapping in defer process 7184 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 7185 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 7186 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7187 mDeferTouchMode = TOUCH_DRAG_MODE; 7188 mLastDeferTouchX = x; 7189 mLastDeferTouchY = y; 7190 startScrollingLayer(x, y); 7191 startDrag(); 7192 } 7193 int deltaX = pinLocX((int) (mScrollX 7194 + mLastDeferTouchX - x)) 7195 - mScrollX; 7196 int deltaY = pinLocY((int) (mScrollY 7197 + mLastDeferTouchY - y)) 7198 - mScrollY; 7199 doDrag(deltaX, deltaY); 7200 if (deltaX != 0) mLastDeferTouchX = x; 7201 if (deltaY != 0) mLastDeferTouchY = y; 7202 break; 7203 } 7204 case MotionEvent.ACTION_UP: 7205 case MotionEvent.ACTION_CANCEL: 7206 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7207 // no fling in defer process 7208 mScroller.springBack(mScrollX, mScrollY, 0, 7209 computeMaxScrollX(), 0, 7210 computeMaxScrollY()); 7211 invalidate(); 7212 WebViewCore.resumePriority(); 7213 WebViewCore.resumeUpdatePicture(mWebViewCore); 7214 } 7215 mDeferTouchMode = TOUCH_DONE_MODE; 7216 break; 7217 case WebViewCore.ACTION_DOUBLETAP: 7218 // doDoubleTap() needs mLastTouchX/Y as anchor 7219 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 7220 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 7221 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7222 mDeferTouchMode = TOUCH_DONE_MODE; 7223 break; 7224 case WebViewCore.ACTION_LONGPRESS: 7225 HitTestResult hitTest = getHitTestResult(); 7226 if (hitTest != null && hitTest.mType 7227 != HitTestResult.UNKNOWN_TYPE) { 7228 performLongClick(); 7229 } 7230 mDeferTouchMode = TOUCH_DONE_MODE; 7231 break; 7232 } 7233 } 7234 break; 7235 7236 case REQUEST_KEYBOARD: 7237 if (msg.arg1 == 0) { 7238 hideSoftKeyboard(); 7239 } else { 7240 displaySoftKeyboard(false); 7241 } 7242 break; 7243 7244 case FIND_AGAIN: 7245 // Ignore if find has been dismissed. 7246 if (mFindIsUp && mFindCallback != null) { 7247 mFindCallback.findAll(); 7248 } 7249 break; 7250 7251 case DRAG_HELD_MOTIONLESS: 7252 mHeldMotionless = MOTIONLESS_TRUE; 7253 invalidate(); 7254 // fall through to keep scrollbars awake 7255 7256 case AWAKEN_SCROLL_BARS: 7257 if (mTouchMode == TOUCH_DRAG_MODE 7258 && mHeldMotionless == MOTIONLESS_TRUE) { 7259 awakenScrollBars(ViewConfiguration 7260 .getScrollDefaultDelay(), false); 7261 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7262 .obtainMessage(AWAKEN_SCROLL_BARS), 7263 ViewConfiguration.getScrollDefaultDelay()); 7264 } 7265 break; 7266 7267 case DO_MOTION_UP: 7268 doMotionUp(msg.arg1, msg.arg2); 7269 break; 7270 7271 case SHOW_FULLSCREEN: { 7272 View view = (View) msg.obj; 7273 int npp = msg.arg1; 7274 7275 if (inFullScreenMode()) { 7276 Log.w(LOGTAG, "Should not have another full screen."); 7277 dismissFullScreenMode(); 7278 } 7279 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7280 mFullScreenHolder.setContentView(view); 7281 mFullScreenHolder.setCancelable(false); 7282 mFullScreenHolder.setCanceledOnTouchOutside(false); 7283 mFullScreenHolder.show(); 7284 7285 break; 7286 } 7287 case HIDE_FULLSCREEN: 7288 dismissFullScreenMode(); 7289 break; 7290 7291 case DOM_FOCUS_CHANGED: 7292 if (inEditingMode()) { 7293 nativeClearCursor(); 7294 rebuildWebTextView(); 7295 } 7296 break; 7297 7298 case SHOW_RECT_MSG_ID: { 7299 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7300 int x = mScrollX; 7301 int left = contentToViewX(data.mLeft); 7302 int width = contentToViewDimension(data.mWidth); 7303 int maxWidth = contentToViewDimension(data.mContentWidth); 7304 int viewWidth = getViewWidth(); 7305 if (width < viewWidth) { 7306 // center align 7307 x += left + width / 2 - mScrollX - viewWidth / 2; 7308 } else { 7309 x += (int) (left + data.mXPercentInDoc * width 7310 - mScrollX - data.mXPercentInView * viewWidth); 7311 } 7312 if (DebugFlags.WEB_VIEW) { 7313 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7314 width + ",maxWidth=" + maxWidth + 7315 ",viewWidth=" + viewWidth + ",x=" 7316 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7317 ",xPercentInView=" + data.mXPercentInView+ ")"); 7318 } 7319 // use the passing content width to cap x as the current 7320 // mContentWidth may not be updated yet 7321 x = Math.max(0, 7322 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7323 int top = contentToViewY(data.mTop); 7324 int height = contentToViewDimension(data.mHeight); 7325 int maxHeight = contentToViewDimension(data.mContentHeight); 7326 int viewHeight = getViewHeight(); 7327 int y = (int) (top + data.mYPercentInDoc * height - 7328 data.mYPercentInView * viewHeight); 7329 if (DebugFlags.WEB_VIEW) { 7330 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7331 height + ",maxHeight=" + maxHeight + 7332 ",viewHeight=" + viewHeight + ",y=" 7333 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7334 ",yPercentInView=" + data.mYPercentInView+ ")"); 7335 } 7336 // use the passing content height to cap y as the current 7337 // mContentHeight may not be updated yet 7338 y = Math.max(0, 7339 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7340 // We need to take into account the visible title height 7341 // when scrolling since y is an absolute view position. 7342 y = Math.max(0, y - getVisibleTitleHeight()); 7343 scrollTo(x, y); 7344 } 7345 break; 7346 7347 case CENTER_FIT_RECT: 7348 Rect r = (Rect)msg.obj; 7349 centerFitRect(r.left, r.top, r.width(), r.height()); 7350 break; 7351 7352 case SET_SCROLLBAR_MODES: 7353 mHorizontalScrollBarMode = msg.arg1; 7354 mVerticalScrollBarMode = msg.arg2; 7355 break; 7356 7357 case SELECTION_STRING_CHANGED: 7358 if (mAccessibilityInjector != null) { 7359 String selectionString = (String) msg.obj; 7360 mAccessibilityInjector.onSelectionStringChange(selectionString); 7361 } 7362 break; 7363 7364 case SET_TOUCH_HIGHLIGHT_RECTS: 7365 invalidate(mTouchHighlightRegion.getBounds()); 7366 mTouchHighlightRegion.setEmpty(); 7367 if (msg.obj != null) { 7368 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7369 for (Rect rect : rects) { 7370 Rect viewRect = contentToViewRect(rect); 7371 // some sites, like stories in nytimes.com, set 7372 // mouse event handler in the top div. It is not 7373 // user friendly to highlight the div if it covers 7374 // more than half of the screen. 7375 if (viewRect.width() < getWidth() >> 1 7376 || viewRect.height() < getHeight() >> 1) { 7377 mTouchHighlightRegion.union(viewRect); 7378 invalidate(viewRect); 7379 } else { 7380 Log.w(LOGTAG, "Skip the huge selection rect:" 7381 + viewRect); 7382 } 7383 } 7384 } 7385 break; 7386 7387 case SAVE_WEBARCHIVE_FINISHED: 7388 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7389 if (saveMessage.mCallback != null) { 7390 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7391 } 7392 break; 7393 7394 case SET_AUTOFILLABLE: 7395 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7396 if (mWebTextView != null) { 7397 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7398 rebuildWebTextView(); 7399 } 7400 break; 7401 7402 case AUTOFILL_COMPLETE: 7403 if (mWebTextView != null) { 7404 // Clear the WebTextView adapter when AutoFill finishes 7405 // so that the drop down gets cleared. 7406 mWebTextView.setAdapterCustom(null); 7407 } 7408 break; 7409 7410 default: 7411 super.handleMessage(msg); 7412 break; 7413 } 7414 } 7415 } 7416 7417 /** 7418 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7419 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7420 */ 7421 private void updateTextSelectionFromMessage(int nodePointer, 7422 int textGeneration, WebViewCore.TextSelectionData data) { 7423 if (inEditingMode() 7424 && mWebTextView.isSameTextField(nodePointer) 7425 && textGeneration == mTextGeneration) { 7426 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7427 } 7428 } 7429 7430 // Class used to use a dropdown for a <select> element 7431 private class InvokeListBox implements Runnable { 7432 // Whether the listbox allows multiple selection. 7433 private boolean mMultiple; 7434 // Passed in to a list with multiple selection to tell 7435 // which items are selected. 7436 private int[] mSelectedArray; 7437 // Passed in to a list with single selection to tell 7438 // where the initial selection is. 7439 private int mSelection; 7440 7441 private Container[] mContainers; 7442 7443 // Need these to provide stable ids to my ArrayAdapter, 7444 // which normally does not have stable ids. (Bug 1250098) 7445 private class Container extends Object { 7446 /** 7447 * Possible values for mEnabled. Keep in sync with OptionStatus in 7448 * WebViewCore.cpp 7449 */ 7450 final static int OPTGROUP = -1; 7451 final static int OPTION_DISABLED = 0; 7452 final static int OPTION_ENABLED = 1; 7453 7454 String mString; 7455 int mEnabled; 7456 int mId; 7457 7458 public String toString() { 7459 return mString; 7460 } 7461 } 7462 7463 /** 7464 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7465 * and allow filtering. 7466 */ 7467 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7468 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7469 super(context, 7470 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7471 com.android.internal.R.layout.select_dialog_singlechoice, 7472 objects); 7473 } 7474 7475 @Override 7476 public View getView(int position, View convertView, 7477 ViewGroup parent) { 7478 // Always pass in null so that we will get a new CheckedTextView 7479 // Otherwise, an item which was previously used as an <optgroup> 7480 // element (i.e. has no check), could get used as an <option> 7481 // element, which needs a checkbox/radio, but it would not have 7482 // one. 7483 convertView = super.getView(position, null, parent); 7484 Container c = item(position); 7485 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7486 // ListView does not draw dividers between disabled and 7487 // enabled elements. Use a LinearLayout to provide dividers 7488 LinearLayout layout = new LinearLayout(mContext); 7489 layout.setOrientation(LinearLayout.VERTICAL); 7490 if (position > 0) { 7491 View dividerTop = new View(mContext); 7492 dividerTop.setBackgroundResource( 7493 android.R.drawable.divider_horizontal_bright); 7494 layout.addView(dividerTop); 7495 } 7496 7497 if (Container.OPTGROUP == c.mEnabled) { 7498 // Currently select_dialog_multichoice and 7499 // select_dialog_singlechoice are CheckedTextViews. If 7500 // that changes, the class cast will no longer be valid. 7501 Assert.assertTrue( 7502 convertView instanceof CheckedTextView); 7503 ((CheckedTextView) convertView).setCheckMarkDrawable( 7504 null); 7505 } else { 7506 // c.mEnabled == Container.OPTION_DISABLED 7507 // Draw the disabled element in a disabled state. 7508 convertView.setEnabled(false); 7509 } 7510 7511 layout.addView(convertView); 7512 if (position < getCount() - 1) { 7513 View dividerBottom = new View(mContext); 7514 dividerBottom.setBackgroundResource( 7515 android.R.drawable.divider_horizontal_bright); 7516 layout.addView(dividerBottom); 7517 } 7518 return layout; 7519 } 7520 return convertView; 7521 } 7522 7523 @Override 7524 public boolean hasStableIds() { 7525 // AdapterView's onChanged method uses this to determine whether 7526 // to restore the old state. Return false so that the old (out 7527 // of date) state does not replace the new, valid state. 7528 return false; 7529 } 7530 7531 private Container item(int position) { 7532 if (position < 0 || position >= getCount()) { 7533 return null; 7534 } 7535 return (Container) getItem(position); 7536 } 7537 7538 @Override 7539 public long getItemId(int position) { 7540 Container item = item(position); 7541 if (item == null) { 7542 return -1; 7543 } 7544 return item.mId; 7545 } 7546 7547 @Override 7548 public boolean areAllItemsEnabled() { 7549 return false; 7550 } 7551 7552 @Override 7553 public boolean isEnabled(int position) { 7554 Container item = item(position); 7555 if (item == null) { 7556 return false; 7557 } 7558 return Container.OPTION_ENABLED == item.mEnabled; 7559 } 7560 } 7561 7562 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7563 mMultiple = true; 7564 mSelectedArray = selected; 7565 7566 int length = array.length; 7567 mContainers = new Container[length]; 7568 for (int i = 0; i < length; i++) { 7569 mContainers[i] = new Container(); 7570 mContainers[i].mString = array[i]; 7571 mContainers[i].mEnabled = enabled[i]; 7572 mContainers[i].mId = i; 7573 } 7574 } 7575 7576 private InvokeListBox(String[] array, int[] enabled, int selection) { 7577 mSelection = selection; 7578 mMultiple = false; 7579 7580 int length = array.length; 7581 mContainers = new Container[length]; 7582 for (int i = 0; i < length; i++) { 7583 mContainers[i] = new Container(); 7584 mContainers[i].mString = array[i]; 7585 mContainers[i].mEnabled = enabled[i]; 7586 mContainers[i].mId = i; 7587 } 7588 } 7589 7590 /* 7591 * Whenever the data set changes due to filtering, this class ensures 7592 * that the checked item remains checked. 7593 */ 7594 private class SingleDataSetObserver extends DataSetObserver { 7595 private long mCheckedId; 7596 private ListView mListView; 7597 private Adapter mAdapter; 7598 7599 /* 7600 * Create a new observer. 7601 * @param id The ID of the item to keep checked. 7602 * @param l ListView for getting and clearing the checked states 7603 * @param a Adapter for getting the IDs 7604 */ 7605 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7606 mCheckedId = id; 7607 mListView = l; 7608 mAdapter = a; 7609 } 7610 7611 public void onChanged() { 7612 // The filter may have changed which item is checked. Find the 7613 // item that the ListView thinks is checked. 7614 int position = mListView.getCheckedItemPosition(); 7615 long id = mAdapter.getItemId(position); 7616 if (mCheckedId != id) { 7617 // Clear the ListView's idea of the checked item, since 7618 // it is incorrect 7619 mListView.clearChoices(); 7620 // Search for mCheckedId. If it is in the filtered list, 7621 // mark it as checked 7622 int count = mAdapter.getCount(); 7623 for (int i = 0; i < count; i++) { 7624 if (mAdapter.getItemId(i) == mCheckedId) { 7625 mListView.setItemChecked(i, true); 7626 break; 7627 } 7628 } 7629 } 7630 } 7631 7632 public void onInvalidate() {} 7633 } 7634 7635 public void run() { 7636 final ListView listView = (ListView) LayoutInflater.from(mContext) 7637 .inflate(com.android.internal.R.layout.select_dialog, null); 7638 final MyArrayListAdapter adapter = new 7639 MyArrayListAdapter(mContext, mContainers, mMultiple); 7640 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7641 .setView(listView).setCancelable(true) 7642 .setInverseBackgroundForced(true); 7643 7644 if (mMultiple) { 7645 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7646 public void onClick(DialogInterface dialog, int which) { 7647 mWebViewCore.sendMessage( 7648 EventHub.LISTBOX_CHOICES, 7649 adapter.getCount(), 0, 7650 listView.getCheckedItemPositions()); 7651 }}); 7652 b.setNegativeButton(android.R.string.cancel, 7653 new DialogInterface.OnClickListener() { 7654 public void onClick(DialogInterface dialog, int which) { 7655 mWebViewCore.sendMessage( 7656 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7657 }}); 7658 } 7659 mListBoxDialog = b.create(); 7660 listView.setAdapter(adapter); 7661 listView.setFocusableInTouchMode(true); 7662 // There is a bug (1250103) where the checks in a ListView with 7663 // multiple items selected are associated with the positions, not 7664 // the ids, so the items do not properly retain their checks when 7665 // filtered. Do not allow filtering on multiple lists until 7666 // that bug is fixed. 7667 7668 listView.setTextFilterEnabled(!mMultiple); 7669 if (mMultiple) { 7670 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7671 int length = mSelectedArray.length; 7672 for (int i = 0; i < length; i++) { 7673 listView.setItemChecked(mSelectedArray[i], true); 7674 } 7675 } else { 7676 listView.setOnItemClickListener(new OnItemClickListener() { 7677 public void onItemClick(AdapterView parent, View v, 7678 int position, long id) { 7679 // Rather than sending the message right away, send it 7680 // after the page regains focus. 7681 mListBoxMessage = Message.obtain(null, 7682 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 7683 mListBoxDialog.dismiss(); 7684 mListBoxDialog = null; 7685 } 7686 }); 7687 if (mSelection != -1) { 7688 listView.setSelection(mSelection); 7689 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7690 listView.setItemChecked(mSelection, true); 7691 DataSetObserver observer = new SingleDataSetObserver( 7692 adapter.getItemId(mSelection), listView, adapter); 7693 adapter.registerDataSetObserver(observer); 7694 } 7695 } 7696 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7697 public void onCancel(DialogInterface dialog) { 7698 mWebViewCore.sendMessage( 7699 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7700 mListBoxDialog = null; 7701 } 7702 }); 7703 mListBoxDialog.show(); 7704 } 7705 } 7706 7707 private Message mListBoxMessage; 7708 7709 /* 7710 * Request a dropdown menu for a listbox with multiple selection. 7711 * 7712 * @param array Labels for the listbox. 7713 * @param enabledArray State for each element in the list. See static 7714 * integers in Container class. 7715 * @param selectedArray Which positions are initally selected. 7716 */ 7717 void requestListBox(String[] array, int[] enabledArray, int[] 7718 selectedArray) { 7719 mPrivateHandler.post( 7720 new InvokeListBox(array, enabledArray, selectedArray)); 7721 } 7722 7723 /* 7724 * Request a dropdown menu for a listbox with single selection or a single 7725 * <select> element. 7726 * 7727 * @param array Labels for the listbox. 7728 * @param enabledArray State for each element in the list. See static 7729 * integers in Container class. 7730 * @param selection Which position is initally selected. 7731 */ 7732 void requestListBox(String[] array, int[] enabledArray, int selection) { 7733 mPrivateHandler.post( 7734 new InvokeListBox(array, enabledArray, selection)); 7735 } 7736 7737 // called by JNI 7738 private void sendMoveFocus(int frame, int node) { 7739 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7740 new WebViewCore.CursorData(frame, node, 0, 0)); 7741 } 7742 7743 // called by JNI 7744 private void sendMoveMouse(int frame, int node, int x, int y) { 7745 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7746 new WebViewCore.CursorData(frame, node, x, y)); 7747 } 7748 7749 /* 7750 * Send a mouse move event to the webcore thread. 7751 * 7752 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7753 * which wants key events, but it is not the focus. This 7754 * will make the visual appear as though nothing is in 7755 * focus. Remove the WebTextView, if present, and stop 7756 * drawing the blinking caret. 7757 * called by JNI 7758 */ 7759 private void sendMoveMouseIfLatest(boolean removeFocus) { 7760 if (removeFocus) { 7761 clearTextEntry(); 7762 } 7763 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7764 cursorData()); 7765 } 7766 7767 // called by JNI 7768 private void sendMotionUp(int touchGeneration, 7769 int frame, int node, int x, int y) { 7770 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7771 touchUpData.mMoveGeneration = touchGeneration; 7772 touchUpData.mFrame = frame; 7773 touchUpData.mNode = node; 7774 touchUpData.mX = x; 7775 touchUpData.mY = y; 7776 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7777 } 7778 7779 7780 private int getScaledMaxXScroll() { 7781 int width; 7782 if (mHeightCanMeasure == false) { 7783 width = getViewWidth() / 4; 7784 } else { 7785 Rect visRect = new Rect(); 7786 calcOurVisibleRect(visRect); 7787 width = visRect.width() / 2; 7788 } 7789 // FIXME the divisor should be retrieved from somewhere 7790 return viewToContentX(width); 7791 } 7792 7793 private int getScaledMaxYScroll() { 7794 int height; 7795 if (mHeightCanMeasure == false) { 7796 height = getViewHeight() / 4; 7797 } else { 7798 Rect visRect = new Rect(); 7799 calcOurVisibleRect(visRect); 7800 height = visRect.height() / 2; 7801 } 7802 // FIXME the divisor should be retrieved from somewhere 7803 // the closest thing today is hard-coded into ScrollView.java 7804 // (from ScrollView.java, line 363) int maxJump = height/2; 7805 return Math.round(height * mZoomManager.getInvScale()); 7806 } 7807 7808 /** 7809 * Called by JNI to invalidate view 7810 */ 7811 private void viewInvalidate() { 7812 invalidate(); 7813 } 7814 7815 /** 7816 * Pass the key directly to the page. This assumes that 7817 * nativePageShouldHandleShiftAndArrows() returned true. 7818 */ 7819 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 7820 int keyEventAction; 7821 int eventHubAction; 7822 if (down) { 7823 keyEventAction = KeyEvent.ACTION_DOWN; 7824 eventHubAction = EventHub.KEY_DOWN; 7825 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7826 } else { 7827 keyEventAction = KeyEvent.ACTION_UP; 7828 eventHubAction = EventHub.KEY_UP; 7829 } 7830 7831 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7832 1, (metaState & KeyEvent.META_SHIFT_ON) 7833 | (metaState & KeyEvent.META_ALT_ON) 7834 | (metaState & KeyEvent.META_SYM_ON) 7835 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 7836 mWebViewCore.sendMessage(eventHubAction, event); 7837 } 7838 7839 // return true if the key was handled 7840 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7841 long time) { 7842 if (mNativeClass == 0) { 7843 return false; 7844 } 7845 mInitialHitTestResult = null; 7846 mLastCursorTime = time; 7847 mLastCursorBounds = nativeGetCursorRingBounds(); 7848 boolean keyHandled 7849 = nativeMoveCursor(keyCode, count, noScroll) == false; 7850 if (DebugFlags.WEB_VIEW) { 7851 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7852 + " mLastCursorTime=" + mLastCursorTime 7853 + " handled=" + keyHandled); 7854 } 7855 if (keyHandled == false || mHeightCanMeasure == false) { 7856 return keyHandled; 7857 } 7858 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7859 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7860 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7861 Rect visRect = new Rect(); 7862 calcOurVisibleRect(visRect); 7863 Rect outset = new Rect(visRect); 7864 int maxXScroll = visRect.width() / 2; 7865 int maxYScroll = visRect.height() / 2; 7866 outset.inset(-maxXScroll, -maxYScroll); 7867 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7868 return keyHandled; 7869 } 7870 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7871 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7872 maxXScroll); 7873 if (maxH > 0) { 7874 pinScrollBy(maxH, 0, true, 0); 7875 } else { 7876 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7877 -maxXScroll); 7878 if (maxH < 0) { 7879 pinScrollBy(maxH, 0, true, 0); 7880 } 7881 } 7882 if (mLastCursorBounds.isEmpty()) return keyHandled; 7883 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7884 return keyHandled; 7885 } 7886 if (DebugFlags.WEB_VIEW) { 7887 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7888 + contentCursorRingBounds); 7889 } 7890 requestRectangleOnScreen(viewCursorRingBounds); 7891 mUserScroll = true; 7892 return keyHandled; 7893 } 7894 7895 /** 7896 * @return Whether accessibility script has been injected. 7897 */ 7898 private boolean accessibilityScriptInjected() { 7899 // TODO: Maybe the injected script should announce its presence in 7900 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 7901 // will check that as one of the conditions it looks for 7902 return mAccessibilityScriptInjected; 7903 } 7904 7905 /** 7906 * Set the background color. It's white by default. Pass 7907 * zero to make the view transparent. 7908 * @param color the ARGB color described by Color.java 7909 */ 7910 public void setBackgroundColor(int color) { 7911 mBackgroundColor = color; 7912 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7913 } 7914 7915 public void debugDump() { 7916 nativeDebugDump(); 7917 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7918 } 7919 7920 /** 7921 * Draw the HTML page into the specified canvas. This call ignores any 7922 * view-specific zoom, scroll offset, or other changes. It does not draw 7923 * any view-specific chrome, such as progress or URL bars. 7924 * 7925 * @hide only needs to be accessible to Browser and testing 7926 */ 7927 public void drawPage(Canvas canvas) { 7928 nativeDraw(canvas, 0, 0, false); 7929 } 7930 7931 /** 7932 * Set the time to wait between passing touches to WebCore. See also the 7933 * TOUCH_SENT_INTERVAL member for further discussion. 7934 * 7935 * @hide This is only used by the DRT test application. 7936 */ 7937 public void setTouchInterval(int interval) { 7938 mCurrentTouchInterval = interval; 7939 } 7940 7941 /** 7942 * Toggle whether multi touch events should be sent to webkit 7943 * no matter if UI wants to handle it first. 7944 * 7945 * @hide This is only used by the webkit layout test. 7946 */ 7947 public void setDeferMultiTouch(boolean value) { 7948 mDeferMultitouch = value; 7949 Log.v(LOGTAG, "set mDeferMultitouch to " + value); 7950 } 7951 7952 /** 7953 * Update our cache with updatedText. 7954 * @param updatedText The new text to put in our cache. 7955 */ 7956 /* package */ void updateCachedTextfield(String updatedText) { 7957 // Also place our generation number so that when we look at the cache 7958 // we recognize that it is up to date. 7959 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7960 } 7961 7962 /*package*/ void autoFillForm(int autoFillQueryId) { 7963 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 7964 } 7965 7966 /* package */ ViewManager getViewManager() { 7967 return mViewManager; 7968 } 7969 7970 private native int nativeCacheHitFramePointer(); 7971 private native Rect nativeCacheHitNodeBounds(); 7972 private native int nativeCacheHitNodePointer(); 7973 /* package */ native void nativeClearCursor(); 7974 private native void nativeCreate(int ptr); 7975 private native int nativeCursorFramePointer(); 7976 private native Rect nativeCursorNodeBounds(); 7977 private native int nativeCursorNodePointer(); 7978 /* package */ native boolean nativeCursorMatchesFocus(); 7979 private native boolean nativeCursorIntersects(Rect visibleRect); 7980 private native boolean nativeCursorIsAnchor(); 7981 private native boolean nativeCursorIsTextInput(); 7982 private native Point nativeCursorPosition(); 7983 private native String nativeCursorText(); 7984 /** 7985 * Returns true if the native cursor node says it wants to handle key events 7986 * (ala plugins). This can only be called if mNativeClass is non-zero! 7987 */ 7988 private native boolean nativeCursorWantsKeyEvents(); 7989 private native void nativeDebugDump(); 7990 private native void nativeDestroy(); 7991 7992 /** 7993 * Draw the picture set with a background color and extra. If 7994 * "splitIfNeeded" is true and the return value is not 0, the return value 7995 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 7996 * native allocation can be freed. 7997 */ 7998 private native int nativeDraw(Canvas canvas, int color, int extra, 7999 boolean splitIfNeeded); 8000 private native void nativeDumpDisplayTree(String urlOrNull); 8001 private native boolean nativeEvaluateLayersAnimations(); 8002 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 8003 private native void nativeExtendSelection(int x, int y); 8004 private native int nativeFindAll(String findLower, String findUpper, 8005 boolean sameAsLastSearch); 8006 private native void nativeFindNext(boolean forward); 8007 /* package */ native int nativeFocusCandidateFramePointer(); 8008 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8009 /* package */ native boolean nativeFocusCandidateIsPassword(); 8010 private native boolean nativeFocusCandidateIsRtlText(); 8011 private native boolean nativeFocusCandidateIsTextInput(); 8012 /* package */ native int nativeFocusCandidateMaxLength(); 8013 /* package */ native String nativeFocusCandidateName(); 8014 private native Rect nativeFocusCandidateNodeBounds(); 8015 /** 8016 * @return A Rect with left, top, right, bottom set to the corresponding 8017 * padding values in the focus candidate, if it is a textfield/textarea with 8018 * a style. Otherwise return null. This is not actually a rectangle; Rect 8019 * is being used to pass four integers. 8020 */ 8021 private native Rect nativeFocusCandidatePaddingRect(); 8022 /* package */ native int nativeFocusCandidatePointer(); 8023 private native String nativeFocusCandidateText(); 8024 /* package */ native float nativeFocusCandidateTextSize(); 8025 /* package */ native int nativeFocusCandidateLineHeight(); 8026 /** 8027 * Returns an integer corresponding to WebView.cpp::type. 8028 * See WebTextView.setType() 8029 */ 8030 private native int nativeFocusCandidateType(); 8031 private native boolean nativeFocusIsPlugin(); 8032 private native Rect nativeFocusNodeBounds(); 8033 /* package */ native int nativeFocusNodePointer(); 8034 private native Rect nativeGetCursorRingBounds(); 8035 private native String nativeGetSelection(); 8036 private native boolean nativeHasCursorNode(); 8037 private native boolean nativeHasFocusNode(); 8038 private native void nativeHideCursor(); 8039 private native boolean nativeHitSelection(int x, int y); 8040 private native String nativeImageURI(int x, int y); 8041 private native void nativeInstrumentReport(); 8042 private native Rect nativeLayerBounds(int layer); 8043 /* package */ native boolean nativeMoveCursorToNextTextInput(); 8044 // return true if the page has been scrolled 8045 private native boolean nativeMotionUp(int x, int y, int slop); 8046 // returns false if it handled the key 8047 private native boolean nativeMoveCursor(int keyCode, int count, 8048 boolean noScroll); 8049 private native int nativeMoveGeneration(); 8050 private native void nativeMoveSelection(int x, int y); 8051 /** 8052 * @return true if the page should get the shift and arrow keys, rather 8053 * than select text/navigation. 8054 * 8055 * If the focus is a plugin, or if the focus and cursor match and are 8056 * a contentEditable element, then the page should handle these keys. 8057 */ 8058 private native boolean nativePageShouldHandleShiftAndArrows(); 8059 private native boolean nativePointInNavCache(int x, int y, int slop); 8060 // Like many other of our native methods, you must make sure that 8061 // mNativeClass is not null before calling this method. 8062 private native void nativeRecordButtons(boolean focused, 8063 boolean pressed, boolean invalidate); 8064 private native void nativeResetSelection(); 8065 private native Point nativeSelectableText(); 8066 private native void nativeSelectAll(); 8067 private native void nativeSelectBestAt(Rect rect); 8068 private native int nativeSelectionX(); 8069 private native int nativeSelectionY(); 8070 private native int nativeFindIndex(); 8071 private native void nativeSetExtendSelection(); 8072 private native void nativeSetFindIsEmpty(); 8073 private native void nativeSetFindIsUp(boolean isUp); 8074 private native void nativeSetHeightCanMeasure(boolean measure); 8075 private native void nativeSetBaseLayer(int layer, Rect invalRect); 8076 private native void nativeShowCursorTimed(); 8077 private native void nativeReplaceBaseContent(int content); 8078 private native void nativeCopyBaseContentToPicture(Picture pict); 8079 private native boolean nativeHasContent(); 8080 private native void nativeSetSelectionPointer(boolean set, 8081 float scale, int x, int y); 8082 private native boolean nativeStartSelection(int x, int y); 8083 private native Rect nativeSubtractLayers(Rect content); 8084 private native int nativeTextGeneration(); 8085 // Never call this version except by updateCachedTextfield(String) - 8086 // we always want to pass in our generation number. 8087 private native void nativeUpdateCachedTextfield(String updatedText, 8088 int generation); 8089 private native boolean nativeWordSelection(int x, int y); 8090 // return NO_LEFTEDGE means failure. 8091 static final int NO_LEFTEDGE = -1; 8092 native int nativeGetBlockLeftEdge(int x, int y, float scale); 8093 8094 // Returns a pointer to the scrollable LayerAndroid at the given point. 8095 private native int nativeScrollableLayer(int x, int y, Rect scrollRect); 8096 private native boolean nativeScrollLayer(int layer, int dx, int dy); 8097} 8098