WebView.java revision 8a4fd2f8e7f78538adad82f4c95e8746f880abcc
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.Uri; 52import android.net.http.SslCertificate; 53import android.os.AsyncTask; 54import android.os.Bundle; 55import android.os.Handler; 56import android.os.Message; 57import android.provider.Settings; 58import android.speech.tts.TextToSpeech; 59import android.text.Selection; 60import android.text.Spannable; 61import android.util.AttributeSet; 62import android.util.EventLog; 63import android.util.Log; 64import android.view.Gravity; 65import android.view.KeyCharacterMap; 66import android.view.KeyEvent; 67import android.view.LayoutInflater; 68import android.view.MotionEvent; 69import android.view.ScaleGestureDetector; 70import android.view.SoundEffectConstants; 71import android.view.VelocityTracker; 72import android.view.View; 73import android.view.ViewConfiguration; 74import android.view.ViewGroup; 75import android.view.ViewParent; 76import android.view.ViewTreeObserver; 77import android.view.accessibility.AccessibilityManager; 78import android.view.inputmethod.EditorInfo; 79import android.view.inputmethod.InputConnection; 80import android.view.inputmethod.InputMethodManager; 81import android.webkit.WebTextView.AutoCompleteAdapter; 82import android.webkit.WebViewCore.EventHub; 83import android.webkit.WebViewCore.TouchEventData; 84import android.webkit.WebViewCore.TouchHighlightData; 85import android.widget.AbsoluteLayout; 86import android.widget.Adapter; 87import android.widget.AdapterView; 88import android.widget.AdapterView.OnItemClickListener; 89import android.widget.ArrayAdapter; 90import android.widget.CheckedTextView; 91import android.widget.EdgeGlow; 92import android.widget.LinearLayout; 93import android.widget.ListView; 94import android.widget.OverScroller; 95import android.widget.Toast; 96 97import java.io.File; 98import java.io.FileInputStream; 99import java.io.FileNotFoundException; 100import java.io.FileOutputStream; 101import java.net.URLDecoder; 102import java.util.ArrayList; 103import java.util.HashMap; 104import java.util.HashSet; 105import java.util.List; 106import java.util.Map; 107import java.util.Set; 108import java.util.regex.Matcher; 109import java.util.regex.Pattern; 110 111import junit.framework.Assert; 112 113/** 114 * <p>A View that displays web pages. This class is the basis upon which you 115 * can roll your own web browser or simply display some online content within your Activity. 116 * It uses the WebKit rendering engine to display 117 * web pages and includes methods to navigate forward and backward 118 * through a history, zoom in and out, perform text searches and more.</p> 119 * <p>To enable the built-in zoom, set 120 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 121 * (introduced in API version 3). 122 * <p>Note that, in order for your Activity to access the Internet and load web pages 123 * in a WebView, you must add the {@code INTERNET} permissions to your 124 * Android Manifest file:</p> 125 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 126 * 127 * <p>This must be a child of the <a 128 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 129 * element.</p> 130 * 131 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 132 * tutorial</a>.</p> 133 * 134 * <h3>Basic usage</h3> 135 * 136 * <p>By default, a WebView provides no browser-like widgets, does not 137 * enable JavaScript and web page errors are ignored. If your goal is only 138 * to display some HTML as a part of your UI, this is probably fine; 139 * the user won't need to interact with the web page beyond reading 140 * it, and the web page won't need to interact with the user. If you 141 * actually want a full-blown web browser, then you probably want to 142 * invoke the Browser application with a URL Intent rather than show it 143 * with a WebView. For example: 144 * <pre> 145 * Uri uri = Uri.parse("http://www.example.com"); 146 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 147 * startActivity(intent); 148 * </pre> 149 * <p>See {@link android.content.Intent} for more information.</p> 150 * 151 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 152 * or set the entire Activity window as a WebView during {@link 153 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 154 * <pre class="prettyprint"> 155 * WebView webview = new WebView(this); 156 * setContentView(webview); 157 * </pre> 158 * 159 * <p>Then load the desired web page:</p> 160 * <pre> 161 * // Simplest usage: note that an exception will NOT be thrown 162 * // if there is an error loading this page (see below). 163 * webview.loadUrl("http://slashdot.org/"); 164 * 165 * // OR, you can also load from an HTML string: 166 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 167 * webview.loadData(summary, "text/html", "utf-8"); 168 * // ... although note that there are restrictions on what this HTML can do. 169 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 170 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 171 * </pre> 172 * 173 * <p>A WebView has several customization points where you can add your 174 * own behavior. These are:</p> 175 * 176 * <ul> 177 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 178 * This class is called when something that might impact a 179 * browser UI happens, for instance, progress updates and 180 * JavaScript alerts are sent here (see <a 181 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 182 * </li> 183 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 184 * It will be called when things happen that impact the 185 * rendering of the content, eg, errors or form submissions. You 186 * can also intercept URL loading here (via {@link 187 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 188 * shouldOverrideUrlLoading()}).</li> 189 * <li>Modifying the {@link android.webkit.WebSettings}, such as 190 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 191 * setJavaScriptEnabled()}. </li> 192 * <li>Adding JavaScript-to-Java interfaces with the {@link 193 * android.webkit.WebView#addJavascriptInterface} method. 194 * This lets you bind Java objects into the WebView so they can be 195 * controlled from the web pages JavaScript.</li> 196 * </ul> 197 * 198 * <p>Here's a more complicated example, showing error handling, 199 * settings, and progress notification:</p> 200 * 201 * <pre class="prettyprint"> 202 * // Let's display the progress in the activity title bar, like the 203 * // browser app does. 204 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 205 * 206 * webview.getSettings().setJavaScriptEnabled(true); 207 * 208 * final Activity activity = this; 209 * webview.setWebChromeClient(new WebChromeClient() { 210 * public void onProgressChanged(WebView view, int progress) { 211 * // Activities and WebViews measure progress with different scales. 212 * // The progress meter will automatically disappear when we reach 100% 213 * activity.setProgress(progress * 1000); 214 * } 215 * }); 216 * webview.setWebViewClient(new WebViewClient() { 217 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 218 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 219 * } 220 * }); 221 * 222 * webview.loadUrl("http://slashdot.org/"); 223 * </pre> 224 * 225 * <h3>Cookie and window management</h3> 226 * 227 * <p>For obvious security reasons, your application has its own 228 * cache, cookie store etc.—it does not share the Browser 229 * application's data. Cookies are managed on a separate thread, so 230 * operations like index building don't block the UI 231 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 232 * if you want to use cookies in your application. 233 * </p> 234 * 235 * <p>By default, requests by the HTML to open new windows are 236 * ignored. This is true whether they be opened by JavaScript or by 237 * the target attribute on a link. You can customize your 238 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 239 * and render them in whatever manner you want.</p> 240 * 241 * <p>The standard behavior for an Activity is to be destroyed and 242 * recreated when the device orientation or any other configuration changes. This will cause 243 * the WebView to reload the current page. If you don't want that, you 244 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 245 * changes, and then just leave the WebView alone. It'll automatically 246 * re-orient itself as appropriate. Read <a 247 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 248 * more information about how to handle configuration changes during runtime.</p> 249 * 250 * 251 * <h3>Building web pages to support different screen densities</h3> 252 * 253 * <p>The screen density of a device is based on the screen resolution. A screen with low density 254 * has fewer available pixels per inch, where a screen with high density 255 * has more — sometimes significantly more — pixels per inch. The density of a 256 * screen is important because, other things being equal, a UI element (such as a button) whose 257 * height and width are defined in terms of screen pixels will appear larger on the lower density 258 * screen and smaller on the higher density screen. 259 * For simplicity, Android collapses all actual screen densities into three generalized densities: 260 * high, medium, and low.</p> 261 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 262 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 263 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 264 * are bigger). 265 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 266 * you (as a web developer) target screens with different screen densities.</p> 267 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 268 * <ul> 269 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 270 * default scaling factor used for the current device. For example, if the value of {@code 271 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 272 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 273 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 274 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 275 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 276 * (discussed below), then you can stop this default scaling behavior.</li> 277 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 278 * densities for which this style sheet is to be used. The corresponding value should be either 279 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 280 * density, or high density screens, respectively. For example: 281 * <pre> 282 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 283 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 284 * which is the high density pixel ratio.</p> 285 * </li> 286 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 287 * this to specify the target density for which the web page is designed, using the following 288 * values: 289 * <ul> 290 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 291 * occurs.</li> 292 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 293 * as appropriate.</li> 294 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 295 * low density screens scale down. This is also the default behavior.</li> 296 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 297 * as appropriate.</li> 298 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 299 * values are 70-400).</li> 300 * </ul> 301 * <p>Here's an example meta tag to specify the target density:</p> 302 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 303 * </ul> 304 * <p>If you want to modify your web page for different densities, by using the {@code 305 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 306 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 307 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 308 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 309 * 310 * 311 */ 312@Widget 313public class WebView extends AbsoluteLayout 314 implements ViewTreeObserver.OnGlobalFocusChangeListener, 315 ViewGroup.OnHierarchyChangeListener { 316 317 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 318 public void onGlobalLayout() { 319 if (isShown()) { 320 setGLRectViewport(); 321 } 322 } 323 } 324 325 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 326 public void onScrollChanged() { 327 if (isShown()) { 328 setGLRectViewport(); 329 } 330 } 331 } 332 333 // The listener to capture global layout change event. 334 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 335 336 // The listener to capture scroll event. 337 private InnerScrollChangedListener mScrollChangedListener = null; 338 339 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 340 // the screen all-the-time. Good for profiling our drawing code 341 static private final boolean AUTO_REDRAW_HACK = false; 342 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 343 private boolean mAutoRedraw; 344 345 // Reference to the AlertDialog displayed by InvokeListBox. 346 // It's used to dismiss the dialog in destroy if not done before. 347 private AlertDialog mListBoxDialog = null; 348 349 static final String LOGTAG = "webview"; 350 351 private ZoomManager mZoomManager; 352 353 private Rect mGLRectViewport; 354 355 /** 356 * Transportation object for returning WebView across thread boundaries. 357 */ 358 public class WebViewTransport { 359 private WebView mWebview; 360 361 /** 362 * Set the WebView to the transportation object. 363 * @param webview The WebView to transport. 364 */ 365 public synchronized void setWebView(WebView webview) { 366 mWebview = webview; 367 } 368 369 /** 370 * Return the WebView object. 371 * @return WebView The transported WebView object. 372 */ 373 public synchronized WebView getWebView() { 374 return mWebview; 375 } 376 } 377 378 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 379 private final CallbackProxy mCallbackProxy; 380 381 private final WebViewDatabase mDatabase; 382 383 // SSL certificate for the main top-level page (if secure) 384 private SslCertificate mCertificate; 385 386 // Native WebView pointer that is 0 until the native object has been 387 // created. 388 private int mNativeClass; 389 // This would be final but it needs to be set to null when the WebView is 390 // destroyed. 391 private WebViewCore mWebViewCore; 392 // Handler for dispatching UI messages. 393 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 394 private WebTextView mWebTextView; 395 // Used to ignore changes to webkit text that arrives to the UI side after 396 // more key events. 397 private int mTextGeneration; 398 399 /* package */ void incrementTextGeneration() { mTextGeneration++; } 400 401 // Used by WebViewCore to create child views. 402 /* package */ final ViewManager mViewManager; 403 404 // Used to display in full screen mode 405 PluginFullScreenHolder mFullScreenHolder; 406 407 /** 408 * Position of the last touch event. 409 */ 410 private float mLastTouchX; 411 private float mLastTouchY; 412 413 /** 414 * Time of the last touch event. 415 */ 416 private long mLastTouchTime; 417 418 /** 419 * Time of the last time sending touch event to WebViewCore 420 */ 421 private long mLastSentTouchTime; 422 423 /** 424 * The minimum elapsed time before sending another ACTION_MOVE event to 425 * WebViewCore. This really should be tuned for each type of the devices. 426 * For example in Google Map api test case, it takes Dream device at least 427 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 428 * triggering the layout and drawing the picture. While the same process 429 * takes 60+ms on the current high speed device. If we make 430 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 431 * to WebViewCore queue and the real layout and draw events will be pushed 432 * to further, which slows down the refresh rate. Choose 50 to favor the 433 * current high speed devices. For Dream like devices, 100 is a better 434 * choice. Maybe make this in the buildspec later. 435 * (Update 12/14/2010: changed to 0 since current device should be able to 436 * handle the raw events and Map team voted to have the raw events too. 437 */ 438 private static final int TOUCH_SENT_INTERVAL = 0; 439 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 440 441 /** 442 * Helper class to get velocity for fling 443 */ 444 VelocityTracker mVelocityTracker; 445 private int mMaximumFling; 446 private float mLastVelocity; 447 private float mLastVelX; 448 private float mLastVelY; 449 450 // The id of the native layer being scrolled. 451 private int mScrollingLayer; 452 private Rect mScrollingLayerRect = new Rect(); 453 454 // only trigger accelerated fling if the new velocity is at least 455 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 456 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 457 458 /** 459 * Touch mode 460 */ 461 private int mTouchMode = TOUCH_DONE_MODE; 462 private static final int TOUCH_INIT_MODE = 1; 463 private static final int TOUCH_DRAG_START_MODE = 2; 464 private static final int TOUCH_DRAG_MODE = 3; 465 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 466 private static final int TOUCH_SHORTPRESS_MODE = 5; 467 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 468 private static final int TOUCH_DONE_MODE = 7; 469 private static final int TOUCH_PINCH_DRAG = 8; 470 private static final int TOUCH_DRAG_LAYER_MODE = 9; 471 472 // Whether to forward the touch events to WebCore 473 private boolean mForwardTouchEvents = false; 474 475 // Whether to prevent default during touch. The initial value depends on 476 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 477 // for touch down. Otherwise UI will wait for the answer of the first 478 // confirmed move before taking over the control. 479 private static final int PREVENT_DEFAULT_NO = 0; 480 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 481 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 482 private static final int PREVENT_DEFAULT_YES = 3; 483 private static final int PREVENT_DEFAULT_IGNORE = 4; 484 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 485 486 // true when the touch movement exceeds the slop 487 private boolean mConfirmMove; 488 489 // if true, touch events will be first processed by WebCore, if prevent 490 // default is not set, the UI will continue handle them. 491 private boolean mDeferTouchProcess; 492 493 // if true, multi-touch events will be passed to webkit directly before UI 494 private boolean mDeferMultitouch = false; 495 496 // to avoid interfering with the current touch events, track them 497 // separately. Currently no snapping or fling in the deferred process mode 498 private int mDeferTouchMode = TOUCH_DONE_MODE; 499 private float mLastDeferTouchX; 500 private float mLastDeferTouchY; 501 502 // To keep track of whether the current drag was initiated by a WebTextView, 503 // so that we know not to hide the cursor 504 boolean mDragFromTextInput; 505 506 // Whether or not to draw the cursor ring. 507 private boolean mDrawCursorRing = true; 508 509 // true if onPause has been called (and not onResume) 510 private boolean mIsPaused; 511 512 private HitTestResult mInitialHitTestResult; 513 514 /** 515 * Customizable constant 516 */ 517 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 518 private int mTouchSlopSquare; 519 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 520 private int mDoubleTapSlopSquare; 521 // pre-computed density adjusted navigation slop 522 private int mNavSlop; 523 // This should be ViewConfiguration.getTapTimeout() 524 // But system time out is 100ms, which is too short for the browser. 525 // In the browser, if it switches out of tap too soon, jump tap won't work. 526 private static final int TAP_TIMEOUT = 200; 527 // This should be ViewConfiguration.getLongPressTimeout() 528 // But system time out is 500ms, which is too short for the browser. 529 // With a short timeout, it's difficult to treat trigger a short press. 530 private static final int LONG_PRESS_TIMEOUT = 1000; 531 // needed to avoid flinging after a pause of no movement 532 private static final int MIN_FLING_TIME = 250; 533 // draw unfiltered after drag is held without movement 534 private static final int MOTIONLESS_TIME = 100; 535 // The amount of content to overlap between two screens when going through 536 // pages with the space bar, in pixels. 537 private static final int PAGE_SCROLL_OVERLAP = 24; 538 539 /** 540 * These prevent calling requestLayout if either dimension is fixed. This 541 * depends on the layout parameters and the measure specs. 542 */ 543 boolean mWidthCanMeasure; 544 boolean mHeightCanMeasure; 545 546 // Remember the last dimensions we sent to the native side so we can avoid 547 // sending the same dimensions more than once. 548 int mLastWidthSent; 549 int mLastHeightSent; 550 551 private int mContentWidth; // cache of value from WebViewCore 552 private int mContentHeight; // cache of value from WebViewCore 553 554 // Need to have the separate control for horizontal and vertical scrollbar 555 // style than the View's single scrollbar style 556 private boolean mOverlayHorizontalScrollbar = true; 557 private boolean mOverlayVerticalScrollbar = false; 558 559 // our standard speed. this way small distances will be traversed in less 560 // time than large distances, but we cap the duration, so that very large 561 // distances won't take too long to get there. 562 private static final int STD_SPEED = 480; // pixels per second 563 // time for the longest scroll animation 564 private static final int MAX_DURATION = 750; // milliseconds 565 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 566 567 // Used by OverScrollGlow 568 OverScroller mScroller; 569 570 private boolean mInOverScrollMode = false; 571 private static Paint mOverScrollBackground; 572 private static Paint mOverScrollBorder; 573 574 private boolean mWrapContent; 575 private static final int MOTIONLESS_FALSE = 0; 576 private static final int MOTIONLESS_PENDING = 1; 577 private static final int MOTIONLESS_TRUE = 2; 578 private static final int MOTIONLESS_IGNORE = 3; 579 private int mHeldMotionless; 580 581 // An instance for injecting accessibility in WebViews with disabled 582 // JavaScript or ones for which no accessibility script exists 583 private AccessibilityInjector mAccessibilityInjector; 584 585 // flag indicating if accessibility script is injected so we 586 // know to handle Shift and arrows natively first 587 private boolean mAccessibilityScriptInjected; 588 589 // the color used to highlight the touch rectangles 590 private static final int mHightlightColor = 0x33000000; 591 // the round corner for the highlight path 592 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 593 // the region indicating where the user touched on the screen 594 private Region mTouchHighlightRegion = new Region(); 595 // the paint for the touch highlight 596 private Paint mTouchHightlightPaint; 597 // debug only 598 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 599 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 600 private Paint mTouchCrossHairColor; 601 private int mTouchHighlightX; 602 private int mTouchHighlightY; 603 604 /* 605 * Private message ids 606 */ 607 private static final int REMEMBER_PASSWORD = 1; 608 private static final int NEVER_REMEMBER_PASSWORD = 2; 609 private static final int SWITCH_TO_SHORTPRESS = 3; 610 private static final int SWITCH_TO_LONGPRESS = 4; 611 private static final int RELEASE_SINGLE_TAP = 5; 612 private static final int REQUEST_FORM_DATA = 6; 613 private static final int RESUME_WEBCORE_PRIORITY = 7; 614 private static final int DRAG_HELD_MOTIONLESS = 8; 615 private static final int AWAKEN_SCROLL_BARS = 9; 616 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 617 private static final int SCROLL_SELECT_TEXT = 11; 618 619 620 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 621 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 622 623 /* 624 * Package message ids 625 */ 626 //! arg1=x, arg2=y 627 static final int SCROLL_TO_MSG_ID = 101; 628 static final int SCROLL_BY_MSG_ID = 102; 629 //! arg1=x, arg2=y 630 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 631 //! arg1=x, arg2=y 632 static final int SYNC_SCROLL_TO_MSG_ID = 104; 633 static final int NEW_PICTURE_MSG_ID = 105; 634 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 635 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 636 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 637 static final int UPDATE_ZOOM_RANGE = 109; 638 static final int UNHANDLED_NAV_KEY = 110; 639 static final int CLEAR_TEXT_ENTRY = 111; 640 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 641 static final int SHOW_RECT_MSG_ID = 113; 642 static final int LONG_PRESS_CENTER = 114; 643 static final int PREVENT_TOUCH_ID = 115; 644 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 645 // obj=Rect in doc coordinates 646 static final int INVAL_RECT_MSG_ID = 117; 647 static final int REQUEST_KEYBOARD = 118; 648 static final int DO_MOTION_UP = 119; 649 static final int SHOW_FULLSCREEN = 120; 650 static final int HIDE_FULLSCREEN = 121; 651 static final int DOM_FOCUS_CHANGED = 122; 652 static final int REPLACE_BASE_CONTENT = 123; 653 static final int FORM_DID_BLUR = 124; 654 static final int RETURN_LABEL = 125; 655 static final int FIND_AGAIN = 126; 656 static final int CENTER_FIT_RECT = 127; 657 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 658 static final int SET_SCROLLBAR_MODES = 129; 659 static final int SELECTION_STRING_CHANGED = 130; 660 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 661 static final int SAVE_WEBARCHIVE_FINISHED = 132; 662 663 static final int SET_AUTOFILLABLE = 133; 664 static final int AUTOFILL_COMPLETE = 134; 665 666 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 667 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 668 669 static final String[] HandlerPrivateDebugString = { 670 "REMEMBER_PASSWORD", // = 1; 671 "NEVER_REMEMBER_PASSWORD", // = 2; 672 "SWITCH_TO_SHORTPRESS", // = 3; 673 "SWITCH_TO_LONGPRESS", // = 4; 674 "RELEASE_SINGLE_TAP", // = 5; 675 "REQUEST_FORM_DATA", // = 6; 676 "RESUME_WEBCORE_PRIORITY", // = 7; 677 "DRAG_HELD_MOTIONLESS", // = 8; 678 "AWAKEN_SCROLL_BARS", // = 9; 679 "PREVENT_DEFAULT_TIMEOUT", // = 10; 680 "SCROLL_SELECT_TEXT" // = 11; 681 }; 682 683 static final String[] HandlerPackageDebugString = { 684 "SCROLL_TO_MSG_ID", // = 101; 685 "SCROLL_BY_MSG_ID", // = 102; 686 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 687 "SYNC_SCROLL_TO_MSG_ID", // = 104; 688 "NEW_PICTURE_MSG_ID", // = 105; 689 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 690 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 691 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 692 "UPDATE_ZOOM_RANGE", // = 109; 693 "UNHANDLED_NAV_KEY", // = 110; 694 "CLEAR_TEXT_ENTRY", // = 111; 695 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 696 "SHOW_RECT_MSG_ID", // = 113; 697 "LONG_PRESS_CENTER", // = 114; 698 "PREVENT_TOUCH_ID", // = 115; 699 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 700 "INVAL_RECT_MSG_ID", // = 117; 701 "REQUEST_KEYBOARD", // = 118; 702 "DO_MOTION_UP", // = 119; 703 "SHOW_FULLSCREEN", // = 120; 704 "HIDE_FULLSCREEN", // = 121; 705 "DOM_FOCUS_CHANGED", // = 122; 706 "REPLACE_BASE_CONTENT", // = 123; 707 "FORM_DID_BLUR", // = 124; 708 "RETURN_LABEL", // = 125; 709 "FIND_AGAIN", // = 126; 710 "CENTER_FIT_RECT", // = 127; 711 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 712 "SET_SCROLLBAR_MODES", // = 129; 713 "SELECTION_STRING_CHANGED", // = 130; 714 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 715 "SAVE_WEBARCHIVE_FINISHED", // = 132; 716 "SET_AUTOFILLABLE", // = 133; 717 "AUTOFILL_COMPLETE" // = 134; 718 }; 719 720 // If the site doesn't use the viewport meta tag to specify the viewport, 721 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 722 static final int DEFAULT_VIEWPORT_WIDTH = 980; 723 724 // normally we try to fit the content to the minimum preferred width 725 // calculated by the Webkit. To avoid the bad behavior when some site's 726 // minimum preferred width keeps growing when changing the viewport width or 727 // the minimum preferred width is huge, an upper limit is needed. 728 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 729 730 // initial scale in percent. 0 means using default. 731 private int mInitialScaleInPercent = 0; 732 733 private boolean mUserScroll = false; 734 735 private int mSnapScrollMode = SNAP_NONE; 736 private static final int SNAP_NONE = 0; 737 private static final int SNAP_LOCK = 1; // not a separate state 738 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 739 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 740 private boolean mSnapPositive; 741 742 // keep these in sync with their counterparts in WebView.cpp 743 private static final int DRAW_EXTRAS_NONE = 0; 744 private static final int DRAW_EXTRAS_FIND = 1; 745 private static final int DRAW_EXTRAS_SELECTION = 2; 746 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 747 748 // keep this in sync with WebCore:ScrollbarMode in WebKit 749 private static final int SCROLLBAR_AUTO = 0; 750 private static final int SCROLLBAR_ALWAYSOFF = 1; 751 // as we auto fade scrollbar, this is ignored. 752 private static final int SCROLLBAR_ALWAYSON = 2; 753 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 754 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 755 756 // constants for determining script injection strategy 757 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 758 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 759 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 760 761 // the alias via which accessibility JavaScript interface is exposed 762 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 763 764 // JavaScript to inject the script chooser which will 765 // pick the right script for the current URL 766 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 767 "javascript:(function() {" + 768 " var chooser = document.createElement('script');" + 769 " chooser.type = 'text/javascript';" + 770 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 771 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 772 " })();"; 773 774 // Regular expression that matches the "axs" URL parameter. 775 // The value of 0 means the accessibility script is opted out 776 // The value of 1 means the accessibility script is already injected 777 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 778 779 // variable to cache the above pattern in case accessibility is enabled. 780 private Pattern mMatchAxsUrlParameterPattern; 781 782 /** 783 * Max distance to overscroll by in pixels. 784 * This how far content can be pulled beyond its normal bounds by the user. 785 */ 786 private int mOverscrollDistance; 787 788 /** 789 * Max distance to overfling by in pixels. 790 * This is how far flinged content can move beyond the end of its normal bounds. 791 */ 792 private int mOverflingDistance; 793 794 private OverScrollGlow mOverScrollGlow; 795 796 // Used to match key downs and key ups 797 private boolean mGotKeyDown; 798 799 /* package */ static boolean mLogEvent = true; 800 801 // for event log 802 private long mLastTouchUpTime = 0; 803 804 private WebViewCore.AutoFillData mAutoFillData; 805 806 /** 807 * URI scheme for telephone number 808 */ 809 public static final String SCHEME_TEL = "tel:"; 810 /** 811 * URI scheme for email address 812 */ 813 public static final String SCHEME_MAILTO = "mailto:"; 814 /** 815 * URI scheme for map address 816 */ 817 public static final String SCHEME_GEO = "geo:0,0?q="; 818 819 private int mBackgroundColor = Color.WHITE; 820 821 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 822 private int mAutoScrollX = 0; 823 private int mAutoScrollY = 0; 824 private boolean mSentAutoScrollMessage = false; 825 826 // Used to notify listeners of a new picture. 827 private PictureListener mPictureListener; 828 /** 829 * Interface to listen for new pictures as they change. 830 */ 831 public interface PictureListener { 832 /** 833 * Notify the listener that the picture has changed. 834 * @param view The WebView that owns the picture. 835 * @param picture The new picture. 836 */ 837 public void onNewPicture(WebView view, Picture picture); 838 } 839 840 // FIXME: Want to make this public, but need to change the API file. 841 public /*static*/ class HitTestResult { 842 /** 843 * Default HitTestResult, where the target is unknown 844 */ 845 public static final int UNKNOWN_TYPE = 0; 846 /** 847 * HitTestResult for hitting a HTML::a tag 848 */ 849 public static final int ANCHOR_TYPE = 1; 850 /** 851 * HitTestResult for hitting a phone number 852 */ 853 public static final int PHONE_TYPE = 2; 854 /** 855 * HitTestResult for hitting a map address 856 */ 857 public static final int GEO_TYPE = 3; 858 /** 859 * HitTestResult for hitting an email address 860 */ 861 public static final int EMAIL_TYPE = 4; 862 /** 863 * HitTestResult for hitting an HTML::img tag 864 */ 865 public static final int IMAGE_TYPE = 5; 866 /** 867 * HitTestResult for hitting a HTML::a tag which contains HTML::img 868 */ 869 public static final int IMAGE_ANCHOR_TYPE = 6; 870 /** 871 * HitTestResult for hitting a HTML::a tag with src=http 872 */ 873 public static final int SRC_ANCHOR_TYPE = 7; 874 /** 875 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 876 */ 877 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 878 /** 879 * HitTestResult for hitting an edit text area 880 */ 881 public static final int EDIT_TEXT_TYPE = 9; 882 883 private int mType; 884 private String mExtra; 885 886 HitTestResult() { 887 mType = UNKNOWN_TYPE; 888 } 889 890 private void setType(int type) { 891 mType = type; 892 } 893 894 private void setExtra(String extra) { 895 mExtra = extra; 896 } 897 898 public int getType() { 899 return mType; 900 } 901 902 public String getExtra() { 903 return mExtra; 904 } 905 } 906 907 /** 908 * Construct a new WebView with a Context object. 909 * @param context A Context object used to access application assets. 910 */ 911 public WebView(Context context) { 912 this(context, null); 913 } 914 915 /** 916 * Construct a new WebView with layout parameters. 917 * @param context A Context object used to access application assets. 918 * @param attrs An AttributeSet passed to our parent. 919 */ 920 public WebView(Context context, AttributeSet attrs) { 921 this(context, attrs, com.android.internal.R.attr.webViewStyle); 922 } 923 924 /** 925 * Construct a new WebView with layout parameters and a default style. 926 * @param context A Context object used to access application assets. 927 * @param attrs An AttributeSet passed to our parent. 928 * @param defStyle The default style resource ID. 929 */ 930 public WebView(Context context, AttributeSet attrs, int defStyle) { 931 this(context, attrs, defStyle, false); 932 } 933 934 /** 935 * Construct a new WebView with layout parameters and a default style. 936 * @param context A Context object used to access application assets. 937 * @param attrs An AttributeSet passed to our parent. 938 * @param defStyle The default style resource ID. 939 */ 940 public WebView(Context context, AttributeSet attrs, int defStyle, 941 boolean privateBrowsing) { 942 this(context, attrs, defStyle, null, privateBrowsing); 943 } 944 945 /** 946 * Construct a new WebView with layout parameters, a default style and a set 947 * of custom Javscript interfaces to be added to the WebView at initialization 948 * time. This guarantees that these interfaces will be available when the JS 949 * context is initialized. 950 * @param context A Context object used to access application assets. 951 * @param attrs An AttributeSet passed to our parent. 952 * @param defStyle The default style resource ID. 953 * @param javaScriptInterfaces is a Map of interface names, as keys, and 954 * object implementing those interfaces, as values. 955 * @hide pending API council approval. 956 */ 957 protected WebView(Context context, AttributeSet attrs, int defStyle, 958 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 959 super(context, attrs, defStyle); 960 961 // Used by the chrome stack to find application paths 962 JniUtil.setContext(context); 963 964 if (AccessibilityManager.getInstance(context).isEnabled()) { 965 if (javaScriptInterfaces == null) { 966 javaScriptInterfaces = new HashMap<String, Object>(); 967 } 968 exposeAccessibilityJavaScriptApi(javaScriptInterfaces); 969 } 970 971 mCallbackProxy = new CallbackProxy(context, this); 972 mViewManager = new ViewManager(this); 973 L10nUtils.loadStrings(context); 974 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 975 mDatabase = WebViewDatabase.getInstance(context); 976 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 977 mZoomManager = new ZoomManager(this, mCallbackProxy); 978 979 /* The init method must follow the creation of certain member variables, 980 * such as the mZoomManager. 981 */ 982 init(); 983 setupPackageListener(context); 984 updateMultiTouchSupport(context); 985 986 if (privateBrowsing) { 987 startPrivateBrowsing(); 988 } 989 990 mAutoFillData = new WebViewCore.AutoFillData(); 991 } 992 993 /* 994 * The intent receiver that monitors for changes to relevant packages (e.g., 995 * sGoogleApps) and notifies WebViewCore of their existence. 996 */ 997 private static BroadcastReceiver sPackageInstallationReceiver = null; 998 999 /* 1000 * A set of Google packages we monitor for the 1001 * navigator.isApplicationInstalled() API. Add additional packages as 1002 * needed. 1003 */ 1004 private static Set<String> sGoogleApps; 1005 static { 1006 sGoogleApps = new HashSet<String>(); 1007 sGoogleApps.add("com.google.android.youtube"); 1008 } 1009 1010 private void setupPackageListener(Context context) { 1011 1012 /* 1013 * we must synchronize the instance check and the creation of the 1014 * receiver to ensure that only ONE receiver exists for all WebView 1015 * instances. 1016 */ 1017 synchronized (WebView.class) { 1018 1019 // if the receiver already exists then we do not need to register it 1020 // again 1021 if (sPackageInstallationReceiver != null) { 1022 return; 1023 } 1024 1025 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1026 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1027 filter.addDataScheme("package"); 1028 sPackageInstallationReceiver = new BroadcastReceiver() { 1029 1030 @Override 1031 public void onReceive(Context context, Intent intent) { 1032 final String action = intent.getAction(); 1033 final String packageName = intent.getData().getSchemeSpecificPart(); 1034 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1035 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1036 // if it is replacing, refreshPlugins() when adding 1037 return; 1038 } 1039 1040 if (sGoogleApps.contains(packageName) && mWebViewCore != null) { 1041 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1042 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1043 } else { 1044 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1045 } 1046 } 1047 1048 PluginManager pm = PluginManager.getInstance(context); 1049 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1050 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1051 } 1052 } 1053 }; 1054 1055 context.getApplicationContext().registerReceiver(sPackageInstallationReceiver, filter); 1056 } 1057 1058 // check if any of the monitored apps are already installed 1059 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1060 1061 @Override 1062 protected Set<String> doInBackground(Void... unused) { 1063 Set<String> installedPackages = new HashSet<String>(); 1064 PackageManager pm = mContext.getPackageManager(); 1065 List<PackageInfo> packages = pm.getInstalledPackages(0); 1066 for (PackageInfo p : packages) { 1067 if (sGoogleApps.contains(p.packageName)) { 1068 installedPackages.add(p.packageName); 1069 } 1070 } 1071 return installedPackages; 1072 } 1073 1074 // Executes on the UI thread 1075 @Override 1076 protected void onPostExecute(Set<String> installedPackages) { 1077 if (mWebViewCore != null) { 1078 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1079 } 1080 } 1081 }; 1082 task.execute(); 1083 } 1084 1085 void updateMultiTouchSupport(Context context) { 1086 mZoomManager.updateMultiTouchSupport(context); 1087 } 1088 1089 private void init() { 1090 setWillNotDraw(false); 1091 setFocusable(true); 1092 setFocusableInTouchMode(true); 1093 setClickable(true); 1094 setLongClickable(true); 1095 1096 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1097 int slop = configuration.getScaledTouchSlop(); 1098 mTouchSlopSquare = slop * slop; 1099 mMinLockSnapReverseDistance = slop; 1100 slop = configuration.getScaledDoubleTapSlop(); 1101 mDoubleTapSlopSquare = slop * slop; 1102 final float density = getContext().getResources().getDisplayMetrics().density; 1103 // use one line height, 16 based on our current default font, for how 1104 // far we allow a touch be away from the edge of a link 1105 mNavSlop = (int) (16 * density); 1106 mZoomManager.init(density); 1107 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1108 1109 // Compute the inverse of the density squared. 1110 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1111 1112 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1113 mOverflingDistance = configuration.getScaledOverflingDistance(); 1114 } 1115 1116 /** 1117 * Exposes accessibility APIs to JavaScript by appending them to the JavaScript 1118 * interfaces map provided by the WebView client. In case of conflicting 1119 * alias with the one of the accessibility API the user specified one wins. 1120 * 1121 * @param javaScriptInterfaces A map with interfaces to be exposed to JavaScript. 1122 */ 1123 private void exposeAccessibilityJavaScriptApi(Map<String, Object> javaScriptInterfaces) { 1124 if (javaScriptInterfaces.containsKey(ALIAS_ACCESSIBILITY_JS_INTERFACE)) { 1125 Log.w(LOGTAG, "JavaScript interface mapped to \"" + ALIAS_ACCESSIBILITY_JS_INTERFACE 1126 + "\" overrides the accessibility API JavaScript interface. No accessibility" 1127 + "API will be exposed to JavaScript!"); 1128 return; 1129 } 1130 1131 // expose the TTS for now ... 1132 javaScriptInterfaces.put(ALIAS_ACCESSIBILITY_JS_INTERFACE, 1133 new TextToSpeech(getContext(), null)); 1134 } 1135 1136 @Override 1137 public void setOverScrollMode(int mode) { 1138 super.setOverScrollMode(mode); 1139 if (mode != OVER_SCROLL_NEVER) { 1140 if (mOverScrollGlow == null) { 1141 mOverScrollGlow = new OverScrollGlow(this); 1142 } 1143 } else { 1144 mOverScrollGlow = null; 1145 } 1146 } 1147 1148 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1149 final float density = mContext.getResources().getDisplayMetrics().density 1150 * 100 / zoomDensity; 1151 mNavSlop = (int) (16 * density); 1152 mZoomManager.updateDefaultZoomDensity(density); 1153 } 1154 1155 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1156 String password, final Message resumeMsg) { 1157 boolean rVal = false; 1158 if (resumeMsg == null) { 1159 // null resumeMsg implies saving password silently 1160 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1161 } else { 1162 final Message remember = mPrivateHandler.obtainMessage( 1163 REMEMBER_PASSWORD); 1164 remember.getData().putString("host", schemePlusHost); 1165 remember.getData().putString("username", username); 1166 remember.getData().putString("password", password); 1167 remember.obj = resumeMsg; 1168 1169 final Message neverRemember = mPrivateHandler.obtainMessage( 1170 NEVER_REMEMBER_PASSWORD); 1171 neverRemember.getData().putString("host", schemePlusHost); 1172 neverRemember.getData().putString("username", username); 1173 neverRemember.getData().putString("password", password); 1174 neverRemember.obj = resumeMsg; 1175 1176 new AlertDialog.Builder(getContext()) 1177 .setTitle(com.android.internal.R.string.save_password_label) 1178 .setMessage(com.android.internal.R.string.save_password_message) 1179 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1180 new DialogInterface.OnClickListener() { 1181 public void onClick(DialogInterface dialog, int which) { 1182 resumeMsg.sendToTarget(); 1183 } 1184 }) 1185 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1186 new DialogInterface.OnClickListener() { 1187 public void onClick(DialogInterface dialog, int which) { 1188 remember.sendToTarget(); 1189 } 1190 }) 1191 .setNegativeButton(com.android.internal.R.string.save_password_never, 1192 new DialogInterface.OnClickListener() { 1193 public void onClick(DialogInterface dialog, int which) { 1194 neverRemember.sendToTarget(); 1195 } 1196 }) 1197 .setOnCancelListener(new OnCancelListener() { 1198 public void onCancel(DialogInterface dialog) { 1199 resumeMsg.sendToTarget(); 1200 } 1201 }).show(); 1202 // Return true so that WebViewCore will pause while the dialog is 1203 // up. 1204 rVal = true; 1205 } 1206 return rVal; 1207 } 1208 1209 @Override 1210 public void setScrollBarStyle(int style) { 1211 if (style == View.SCROLLBARS_INSIDE_INSET 1212 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1213 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1214 } else { 1215 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1216 } 1217 super.setScrollBarStyle(style); 1218 } 1219 1220 /** 1221 * Specify whether the horizontal scrollbar has overlay style. 1222 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1223 */ 1224 public void setHorizontalScrollbarOverlay(boolean overlay) { 1225 mOverlayHorizontalScrollbar = overlay; 1226 } 1227 1228 /** 1229 * Specify whether the vertical scrollbar has overlay style. 1230 * @param overlay TRUE if vertical scrollbar should have overlay style. 1231 */ 1232 public void setVerticalScrollbarOverlay(boolean overlay) { 1233 mOverlayVerticalScrollbar = overlay; 1234 } 1235 1236 /** 1237 * Return whether horizontal scrollbar has overlay style 1238 * @return TRUE if horizontal scrollbar has overlay style. 1239 */ 1240 public boolean overlayHorizontalScrollbar() { 1241 return mOverlayHorizontalScrollbar; 1242 } 1243 1244 /** 1245 * Return whether vertical scrollbar has overlay style 1246 * @return TRUE if vertical scrollbar has overlay style. 1247 */ 1248 public boolean overlayVerticalScrollbar() { 1249 return mOverlayVerticalScrollbar; 1250 } 1251 1252 /* 1253 * Return the width of the view where the content of WebView should render 1254 * to. 1255 * Note: this can be called from WebCoreThread. 1256 */ 1257 /* package */ int getViewWidth() { 1258 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1259 return getWidth(); 1260 } else { 1261 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1262 } 1263 } 1264 1265 /* 1266 * returns the height of the titlebarview (if any). Does not care about 1267 * scrolling 1268 */ 1269 int getTitleHeight() { 1270 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1271 } 1272 1273 /* 1274 * Return the amount of the titlebarview (if any) that is visible 1275 * 1276 * @hide 1277 */ 1278 public int getVisibleTitleHeight() { 1279 // need to restrict mScrollY due to over scroll 1280 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1281 } 1282 1283 /* 1284 * Return the height of the view where the content of WebView should render 1285 * to. Note that this excludes mTitleBar, if there is one. 1286 * Note: this can be called from WebCoreThread. 1287 */ 1288 /* package */ int getViewHeight() { 1289 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1290 } 1291 1292 private int getViewHeightWithTitle() { 1293 int height = getHeight(); 1294 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1295 height -= getHorizontalScrollbarHeight(); 1296 } 1297 return height; 1298 } 1299 1300 /** 1301 * @return The SSL certificate for the main top-level page or null if 1302 * there is no certificate (the site is not secure). 1303 */ 1304 public SslCertificate getCertificate() { 1305 return mCertificate; 1306 } 1307 1308 /** 1309 * Sets the SSL certificate for the main top-level page. 1310 */ 1311 public void setCertificate(SslCertificate certificate) { 1312 if (DebugFlags.WEB_VIEW) { 1313 Log.v(LOGTAG, "setCertificate=" + certificate); 1314 } 1315 // here, the certificate can be null (if the site is not secure) 1316 mCertificate = certificate; 1317 } 1318 1319 //------------------------------------------------------------------------- 1320 // Methods called by activity 1321 //------------------------------------------------------------------------- 1322 1323 /** 1324 * Save the username and password for a particular host in the WebView's 1325 * internal database. 1326 * @param host The host that required the credentials. 1327 * @param username The username for the given host. 1328 * @param password The password for the given host. 1329 */ 1330 public void savePassword(String host, String username, String password) { 1331 mDatabase.setUsernamePassword(host, username, password); 1332 } 1333 1334 /** 1335 * Set the HTTP authentication credentials for a given host and realm. 1336 * 1337 * @param host The host for the credentials. 1338 * @param realm The realm for the credentials. 1339 * @param username The username for the password. If it is null, it means 1340 * password can't be saved. 1341 * @param password The password 1342 */ 1343 public void setHttpAuthUsernamePassword(String host, String realm, 1344 String username, String password) { 1345 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1346 } 1347 1348 /** 1349 * Retrieve the HTTP authentication username and password for a given 1350 * host & realm pair 1351 * 1352 * @param host The host for which the credentials apply. 1353 * @param realm The realm for which the credentials apply. 1354 * @return String[] if found, String[0] is username, which can be null and 1355 * String[1] is password. Return null if it can't find anything. 1356 */ 1357 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1358 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1359 } 1360 1361 /** 1362 * Remove Find or Select ActionModes, if active. 1363 */ 1364 private void clearActionModes() { 1365 if (mSelectCallback != null) { 1366 mSelectCallback.finish(); 1367 } 1368 if (mFindCallback != null) { 1369 mFindCallback.finish(); 1370 } 1371 } 1372 1373 /** 1374 * Called to clear state when moving from one page to another, or changing 1375 * in some other way that makes elements associated with the current page 1376 * (such as WebTextView or ActionModes) no longer relevant. 1377 */ 1378 private void clearHelpers() { 1379 clearTextEntry(); 1380 clearActionModes(); 1381 dismissFullScreenMode(); 1382 } 1383 1384 /** 1385 * Destroy the internal state of the WebView. This method should be called 1386 * after the WebView has been removed from the view system. No other 1387 * methods may be called on a WebView after destroy. 1388 */ 1389 public void destroy() { 1390 clearHelpers(); 1391 if (mListBoxDialog != null) { 1392 mListBoxDialog.dismiss(); 1393 mListBoxDialog = null; 1394 } 1395 if (mWebViewCore != null) { 1396 // Set the handlers to null before destroying WebViewCore so no 1397 // more messages will be posted. 1398 mCallbackProxy.setWebViewClient(null); 1399 mCallbackProxy.setWebChromeClient(null); 1400 // Tell WebViewCore to destroy itself 1401 synchronized (this) { 1402 WebViewCore webViewCore = mWebViewCore; 1403 mWebViewCore = null; // prevent using partial webViewCore 1404 webViewCore.destroy(); 1405 } 1406 // Remove any pending messages that might not be serviced yet. 1407 mPrivateHandler.removeCallbacksAndMessages(null); 1408 mCallbackProxy.removeCallbacksAndMessages(null); 1409 // Wake up the WebCore thread just in case it is waiting for a 1410 // JavaScript dialog. 1411 synchronized (mCallbackProxy) { 1412 mCallbackProxy.notify(); 1413 } 1414 } 1415 if (mNativeClass != 0) { 1416 nativeDestroy(); 1417 mNativeClass = 0; 1418 } 1419 } 1420 1421 /** 1422 * Enables platform notifications of data state and proxy changes. 1423 */ 1424 public static void enablePlatformNotifications() { 1425 Network.enablePlatformNotifications(); 1426 } 1427 1428 /** 1429 * If platform notifications are enabled, this should be called 1430 * from the Activity's onPause() or onStop(). 1431 */ 1432 public static void disablePlatformNotifications() { 1433 Network.disablePlatformNotifications(); 1434 } 1435 1436 /** 1437 * Sets JavaScript engine flags. 1438 * 1439 * @param flags JS engine flags in a String 1440 * 1441 * @hide pending API solidification 1442 */ 1443 public void setJsFlags(String flags) { 1444 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1445 } 1446 1447 /** 1448 * Inform WebView of the network state. This is used to set 1449 * the JavaScript property window.navigator.isOnline and 1450 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1451 * @param networkUp boolean indicating if network is available 1452 */ 1453 public void setNetworkAvailable(boolean networkUp) { 1454 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1455 networkUp ? 1 : 0, 0); 1456 } 1457 1458 /** 1459 * Inform WebView about the current network type. 1460 * {@hide} 1461 */ 1462 public void setNetworkType(String type, String subtype) { 1463 Map<String, String> map = new HashMap<String, String>(); 1464 map.put("type", type); 1465 map.put("subtype", subtype); 1466 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1467 } 1468 /** 1469 * Save the state of this WebView used in 1470 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1471 * method no longer stores the display data for this WebView. The previous 1472 * behavior could potentially leak files if {@link #restoreState} was never 1473 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1474 * and restoring the display data. 1475 * @param outState The Bundle to store the WebView state. 1476 * @return The same copy of the back/forward list used to save the state. If 1477 * saveState fails, the returned list will be null. 1478 * @see #savePicture 1479 * @see #restorePicture 1480 */ 1481 public WebBackForwardList saveState(Bundle outState) { 1482 if (outState == null) { 1483 return null; 1484 } 1485 // We grab a copy of the back/forward list because a client of WebView 1486 // may have invalidated the history list by calling clearHistory. 1487 WebBackForwardList list = copyBackForwardList(); 1488 final int currentIndex = list.getCurrentIndex(); 1489 final int size = list.getSize(); 1490 // We should fail saving the state if the list is empty or the index is 1491 // not in a valid range. 1492 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1493 return null; 1494 } 1495 outState.putInt("index", currentIndex); 1496 // FIXME: This should just be a byte[][] instead of ArrayList but 1497 // Parcel.java does not have the code to handle multi-dimensional 1498 // arrays. 1499 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1500 for (int i = 0; i < size; i++) { 1501 WebHistoryItem item = list.getItemAtIndex(i); 1502 if (null == item) { 1503 // FIXME: this shouldn't happen 1504 // need to determine how item got set to null 1505 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1506 return null; 1507 } 1508 byte[] data = item.getFlattenedData(); 1509 if (data == null) { 1510 // It would be very odd to not have any data for a given history 1511 // item. And we will fail to rebuild the history list without 1512 // flattened data. 1513 return null; 1514 } 1515 history.add(data); 1516 } 1517 outState.putSerializable("history", history); 1518 if (mCertificate != null) { 1519 outState.putBundle("certificate", 1520 SslCertificate.saveState(mCertificate)); 1521 } 1522 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1523 mZoomManager.saveZoomState(outState); 1524 return list; 1525 } 1526 1527 /** 1528 * Save the current display data to the Bundle given. Used in conjunction 1529 * with {@link #saveState}. 1530 * @param b A Bundle to store the display data. 1531 * @param dest The file to store the serialized picture data. Will be 1532 * overwritten with this WebView's picture data. 1533 * @return True if the picture was successfully saved. 1534 */ 1535 public boolean savePicture(Bundle b, final File dest) { 1536 if (dest == null || b == null) { 1537 return false; 1538 } 1539 final Picture p = capturePicture(); 1540 // Use a temporary file while writing to ensure the destination file 1541 // contains valid data. 1542 final File temp = new File(dest.getPath() + ".writing"); 1543 new Thread(new Runnable() { 1544 public void run() { 1545 FileOutputStream out = null; 1546 try { 1547 out = new FileOutputStream(temp); 1548 p.writeToStream(out); 1549 // Writing the picture succeeded, rename the temporary file 1550 // to the destination. 1551 temp.renameTo(dest); 1552 } catch (Exception e) { 1553 // too late to do anything about it. 1554 } finally { 1555 if (out != null) { 1556 try { 1557 out.close(); 1558 } catch (Exception e) { 1559 // Can't do anything about that 1560 } 1561 } 1562 temp.delete(); 1563 } 1564 } 1565 }).start(); 1566 // now update the bundle 1567 b.putInt("scrollX", mScrollX); 1568 b.putInt("scrollY", mScrollY); 1569 mZoomManager.saveZoomState(b); 1570 return true; 1571 } 1572 1573 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1574 int sx = b.getInt("scrollX", 0); 1575 int sy = b.getInt("scrollY", 0); 1576 1577 mDrawHistory = true; 1578 mHistoryPicture = p; 1579 mScrollX = sx; 1580 mScrollY = sy; 1581 mZoomManager.restoreZoomState(b); 1582 final float scale = mZoomManager.getScale(); 1583 mHistoryWidth = Math.round(p.getWidth() * scale); 1584 mHistoryHeight = Math.round(p.getHeight() * scale); 1585 1586 invalidate(); 1587 } 1588 1589 /** 1590 * Restore the display data that was save in {@link #savePicture}. Used in 1591 * conjunction with {@link #restoreState}. 1592 * @param b A Bundle containing the saved display data. 1593 * @param src The file where the picture data was stored. 1594 * @return True if the picture was successfully restored. 1595 */ 1596 public boolean restorePicture(Bundle b, File src) { 1597 if (src == null || b == null) { 1598 return false; 1599 } 1600 if (!src.exists()) { 1601 return false; 1602 } 1603 try { 1604 final FileInputStream in = new FileInputStream(src); 1605 final Bundle copy = new Bundle(b); 1606 new Thread(new Runnable() { 1607 public void run() { 1608 try { 1609 final Picture p = Picture.createFromStream(in); 1610 if (p != null) { 1611 // Post a runnable on the main thread to update the 1612 // history picture fields. 1613 mPrivateHandler.post(new Runnable() { 1614 public void run() { 1615 restoreHistoryPictureFields(p, copy); 1616 } 1617 }); 1618 } 1619 } finally { 1620 try { 1621 in.close(); 1622 } catch (Exception e) { 1623 // Nothing we can do now. 1624 } 1625 } 1626 } 1627 }).start(); 1628 } catch (FileNotFoundException e){ 1629 e.printStackTrace(); 1630 } 1631 return true; 1632 } 1633 1634 /** 1635 * Restore the state of this WebView from the given map used in 1636 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1637 * be called to restore the state of the WebView before using the object. If 1638 * it is called after the WebView has had a chance to build state (load 1639 * pages, create a back/forward list, etc.) there may be undesirable 1640 * side-effects. Please note that this method no longer restores the 1641 * display data for this WebView. See {@link #savePicture} and {@link 1642 * #restorePicture} for saving and restoring the display data. 1643 * @param inState The incoming Bundle of state. 1644 * @return The restored back/forward list or null if restoreState failed. 1645 * @see #savePicture 1646 * @see #restorePicture 1647 */ 1648 public WebBackForwardList restoreState(Bundle inState) { 1649 WebBackForwardList returnList = null; 1650 if (inState == null) { 1651 return returnList; 1652 } 1653 if (inState.containsKey("index") && inState.containsKey("history")) { 1654 mCertificate = SslCertificate.restoreState( 1655 inState.getBundle("certificate")); 1656 1657 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1658 final int index = inState.getInt("index"); 1659 // We can't use a clone of the list because we need to modify the 1660 // shared copy, so synchronize instead to prevent concurrent 1661 // modifications. 1662 synchronized (list) { 1663 final List<byte[]> history = 1664 (List<byte[]>) inState.getSerializable("history"); 1665 final int size = history.size(); 1666 // Check the index bounds so we don't crash in native code while 1667 // restoring the history index. 1668 if (index < 0 || index >= size) { 1669 return null; 1670 } 1671 for (int i = 0; i < size; i++) { 1672 byte[] data = history.remove(0); 1673 if (data == null) { 1674 // If we somehow have null data, we cannot reconstruct 1675 // the item and thus our history list cannot be rebuilt. 1676 return null; 1677 } 1678 WebHistoryItem item = new WebHistoryItem(data); 1679 list.addHistoryItem(item); 1680 } 1681 // Grab the most recent copy to return to the caller. 1682 returnList = copyBackForwardList(); 1683 // Update the copy to have the correct index. 1684 returnList.setCurrentIndex(index); 1685 } 1686 // Restore private browsing setting. 1687 if (inState.getBoolean("privateBrowsingEnabled")) { 1688 getSettings().setPrivateBrowsingEnabled(true); 1689 } 1690 mZoomManager.restoreZoomState(inState); 1691 // Remove all pending messages because we are restoring previous 1692 // state. 1693 mWebViewCore.removeMessages(); 1694 // Send a restore state message. 1695 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1696 } 1697 return returnList; 1698 } 1699 1700 /** 1701 * Load the given url with the extra headers. 1702 * @param url The url of the resource to load. 1703 * @param extraHeaders The extra headers sent with this url. This should not 1704 * include the common headers like "user-agent". If it does, it 1705 * will be replaced by the intrinsic value of the WebView. 1706 */ 1707 public void loadUrl(String url, Map<String, String> extraHeaders) { 1708 switchOutDrawHistory(); 1709 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1710 arg.mUrl = url; 1711 arg.mExtraHeaders = extraHeaders; 1712 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1713 clearHelpers(); 1714 } 1715 1716 /** 1717 * Load the given url. 1718 * @param url The url of the resource to load. 1719 */ 1720 public void loadUrl(String url) { 1721 if (url == null) { 1722 return; 1723 } 1724 loadUrl(url, null); 1725 } 1726 1727 /** 1728 * Load the url with postData using "POST" method into the WebView. If url 1729 * is not a network url, it will be loaded with {link 1730 * {@link #loadUrl(String)} instead. 1731 * 1732 * @param url The url of the resource to load. 1733 * @param postData The data will be passed to "POST" request. 1734 */ 1735 public void postUrl(String url, byte[] postData) { 1736 if (URLUtil.isNetworkUrl(url)) { 1737 switchOutDrawHistory(); 1738 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1739 arg.mUrl = url; 1740 arg.mPostData = postData; 1741 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1742 clearHelpers(); 1743 } else { 1744 loadUrl(url); 1745 } 1746 } 1747 1748 /** 1749 * Load the given data into the WebView. This will load the data into 1750 * WebView using the data: scheme. Content loaded through this mechanism 1751 * does not have the ability to load content from the network. 1752 * @param data A String of data in the given encoding. The date must 1753 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1754 * %27, %3f respectively. 1755 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1756 * @param encoding The encoding of the data. i.e. utf-8, base64 1757 */ 1758 public void loadData(String data, String mimeType, String encoding) { 1759 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1760 } 1761 1762 /** 1763 * Load the given data into the WebView, use the provided URL as the base 1764 * URL for the content. The base URL is the URL that represents the page 1765 * that is loaded through this interface. As such, it is used to resolve any 1766 * relative URLs. The historyUrl is used for the history entry. 1767 * <p> 1768 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1769 * files through "file:///android_asset/" for the sub resources is more 1770 * restricted. If you provide null or empty string as baseUrl, you won't be 1771 * able to access asset files. If the baseUrl is anything other than 1772 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1773 * sub resources. 1774 * 1775 * @param baseUrl Url to resolve relative paths with, if null defaults to 1776 * "about:blank" 1777 * @param data A String of data in the given encoding. 1778 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1779 * defaults to "text/html" 1780 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1781 * @param historyUrl URL to use as the history entry. Can be null. 1782 */ 1783 public void loadDataWithBaseURL(String baseUrl, String data, 1784 String mimeType, String encoding, String historyUrl) { 1785 1786 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1787 loadData(data, mimeType, encoding); 1788 return; 1789 } 1790 switchOutDrawHistory(); 1791 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1792 arg.mBaseUrl = baseUrl; 1793 arg.mData = data; 1794 arg.mMimeType = mimeType; 1795 arg.mEncoding = encoding; 1796 arg.mHistoryUrl = historyUrl; 1797 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1798 clearHelpers(); 1799 } 1800 1801 /** 1802 * Saves the current view as a web archive. 1803 * 1804 * @param filename The filename where the archive should be placed. 1805 */ 1806 public void saveWebArchive(String filename) { 1807 saveWebArchive(filename, false, null); 1808 } 1809 1810 /* package */ static class SaveWebArchiveMessage { 1811 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1812 mBasename = basename; 1813 mAutoname = autoname; 1814 mCallback = callback; 1815 } 1816 1817 /* package */ final String mBasename; 1818 /* package */ final boolean mAutoname; 1819 /* package */ final ValueCallback<String> mCallback; 1820 /* package */ String mResultFile; 1821 } 1822 1823 /** 1824 * Saves the current view as a web archive. 1825 * 1826 * @param basename The filename where the archive should be placed. 1827 * @param autoname If false, takes basename to be a file. If true, basename 1828 * is assumed to be a directory in which a filename will be 1829 * chosen according to the url of the current page. 1830 * @param callback Called after the web archive has been saved. The 1831 * parameter for onReceiveValue will either be the filename 1832 * under which the file was saved, or null if saving the 1833 * file failed. 1834 */ 1835 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1836 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1837 new SaveWebArchiveMessage(basename, autoname, callback)); 1838 } 1839 1840 /** 1841 * Stop the current load. 1842 */ 1843 public void stopLoading() { 1844 // TODO: should we clear all the messages in the queue before sending 1845 // STOP_LOADING? 1846 switchOutDrawHistory(); 1847 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1848 } 1849 1850 /** 1851 * Reload the current url. 1852 */ 1853 public void reload() { 1854 clearHelpers(); 1855 switchOutDrawHistory(); 1856 mWebViewCore.sendMessage(EventHub.RELOAD); 1857 } 1858 1859 /** 1860 * Return true if this WebView has a back history item. 1861 * @return True iff this WebView has a back history item. 1862 */ 1863 public boolean canGoBack() { 1864 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1865 synchronized (l) { 1866 if (l.getClearPending()) { 1867 return false; 1868 } else { 1869 return l.getCurrentIndex() > 0; 1870 } 1871 } 1872 } 1873 1874 /** 1875 * Go back in the history of this WebView. 1876 */ 1877 public void goBack() { 1878 goBackOrForward(-1); 1879 } 1880 1881 /** 1882 * Return true if this WebView has a forward history item. 1883 * @return True iff this Webview has a forward history item. 1884 */ 1885 public boolean canGoForward() { 1886 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1887 synchronized (l) { 1888 if (l.getClearPending()) { 1889 return false; 1890 } else { 1891 return l.getCurrentIndex() < l.getSize() - 1; 1892 } 1893 } 1894 } 1895 1896 /** 1897 * Go forward in the history of this WebView. 1898 */ 1899 public void goForward() { 1900 goBackOrForward(1); 1901 } 1902 1903 /** 1904 * Return true if the page can go back or forward the given 1905 * number of steps. 1906 * @param steps The negative or positive number of steps to move the 1907 * history. 1908 */ 1909 public boolean canGoBackOrForward(int steps) { 1910 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1911 synchronized (l) { 1912 if (l.getClearPending()) { 1913 return false; 1914 } else { 1915 int newIndex = l.getCurrentIndex() + steps; 1916 return newIndex >= 0 && newIndex < l.getSize(); 1917 } 1918 } 1919 } 1920 1921 /** 1922 * Go to the history item that is the number of steps away from 1923 * the current item. Steps is negative if backward and positive 1924 * if forward. 1925 * @param steps The number of steps to take back or forward in the back 1926 * forward list. 1927 */ 1928 public void goBackOrForward(int steps) { 1929 goBackOrForward(steps, false); 1930 } 1931 1932 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1933 if (steps != 0) { 1934 clearHelpers(); 1935 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1936 ignoreSnapshot ? 1 : 0); 1937 } 1938 } 1939 1940 /** 1941 * Returns true if private browsing is enabled in this WebView. 1942 */ 1943 public boolean isPrivateBrowsingEnabled() { 1944 return getSettings().isPrivateBrowsingEnabled(); 1945 } 1946 1947 private void startPrivateBrowsing() { 1948 boolean wasPrivateBrowsingEnabled = isPrivateBrowsingEnabled(); 1949 1950 getSettings().setPrivateBrowsingEnabled(true); 1951 1952 if (!wasPrivateBrowsingEnabled) { 1953 loadUrl("browser:incognito"); 1954 } 1955 } 1956 1957 private boolean extendScroll(int y) { 1958 int finalY = mScroller.getFinalY(); 1959 int newY = pinLocY(finalY + y); 1960 if (newY == finalY) return false; 1961 mScroller.setFinalY(newY); 1962 mScroller.extendDuration(computeDuration(0, y)); 1963 return true; 1964 } 1965 1966 /** 1967 * Scroll the contents of the view up by half the view size 1968 * @param top true to jump to the top of the page 1969 * @return true if the page was scrolled 1970 */ 1971 public boolean pageUp(boolean top) { 1972 if (mNativeClass == 0) { 1973 return false; 1974 } 1975 nativeClearCursor(); // start next trackball movement from page edge 1976 if (top) { 1977 // go to the top of the document 1978 return pinScrollTo(mScrollX, 0, true, 0); 1979 } 1980 // Page up 1981 int h = getHeight(); 1982 int y; 1983 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1984 y = -h + PAGE_SCROLL_OVERLAP; 1985 } else { 1986 y = -h / 2; 1987 } 1988 mUserScroll = true; 1989 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1990 : extendScroll(y); 1991 } 1992 1993 /** 1994 * Scroll the contents of the view down by half the page size 1995 * @param bottom true to jump to bottom of page 1996 * @return true if the page was scrolled 1997 */ 1998 public boolean pageDown(boolean bottom) { 1999 if (mNativeClass == 0) { 2000 return false; 2001 } 2002 nativeClearCursor(); // start next trackball movement from page edge 2003 if (bottom) { 2004 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2005 } 2006 // Page down. 2007 int h = getHeight(); 2008 int y; 2009 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2010 y = h - PAGE_SCROLL_OVERLAP; 2011 } else { 2012 y = h / 2; 2013 } 2014 mUserScroll = true; 2015 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2016 : extendScroll(y); 2017 } 2018 2019 /** 2020 * Clear the view so that onDraw() will draw nothing but white background, 2021 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2022 */ 2023 public void clearView() { 2024 mContentWidth = 0; 2025 mContentHeight = 0; 2026 setBaseLayer(0, null); 2027 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2028 } 2029 2030 /** 2031 * Return a new picture that captures the current display of the webview. 2032 * This is a copy of the display, and will be unaffected if the webview 2033 * later loads a different URL. 2034 * 2035 * @return a picture containing the current contents of the view. Note this 2036 * picture is of the entire document, and is not restricted to the 2037 * bounds of the view. 2038 */ 2039 public Picture capturePicture() { 2040 if (mNativeClass == 0) return null; 2041 Picture result = new Picture(); 2042 nativeCopyBaseContentToPicture(result); 2043 return result; 2044 } 2045 2046 /** 2047 * Return true if the browser is displaying a TextView for text input. 2048 */ 2049 private boolean inEditingMode() { 2050 return mWebTextView != null && mWebTextView.getParent() != null; 2051 } 2052 2053 /** 2054 * Remove the WebTextView. 2055 */ 2056 private void clearTextEntry() { 2057 if (inEditingMode()) { 2058 mWebTextView.remove(); 2059 } else { 2060 // The keyboard may be open with the WebView as the served view 2061 hideSoftKeyboard(); 2062 } 2063 } 2064 2065 /** 2066 * Return the current scale of the WebView 2067 * @return The current scale. 2068 */ 2069 public float getScale() { 2070 return mZoomManager.getScale(); 2071 } 2072 2073 /** 2074 * Set the initial scale for the WebView. 0 means default. If 2075 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2076 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2077 * WebView starts will this value as initial scale. 2078 * 2079 * @param scaleInPercent The initial scale in percent. 2080 */ 2081 public void setInitialScale(int scaleInPercent) { 2082 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2083 } 2084 2085 /** 2086 * Invoke the graphical zoom picker widget for this WebView. This will 2087 * result in the zoom widget appearing on the screen to control the zoom 2088 * level of this WebView. 2089 */ 2090 public void invokeZoomPicker() { 2091 if (!getSettings().supportZoom()) { 2092 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2093 return; 2094 } 2095 clearHelpers(); 2096 mZoomManager.invokeZoomPicker(); 2097 } 2098 2099 /** 2100 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2101 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2102 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2103 * anchor does not have a url or if it is a JavaScript url, the type will 2104 * be UNKNOWN_TYPE and the url has to be retrieved through 2105 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2106 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2107 * the "extra" field. A type of 2108 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2109 * a child node. If a phone number is found, the HitTestResult type is set 2110 * to PHONE_TYPE and the phone number is set in the "extra" field of 2111 * HitTestResult. If a map address is found, the HitTestResult type is set 2112 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2113 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2114 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2115 * HitTestResult type is set to UNKNOWN_TYPE. 2116 */ 2117 public HitTestResult getHitTestResult() { 2118 return hitTestResult(mInitialHitTestResult); 2119 } 2120 2121 private HitTestResult hitTestResult(HitTestResult fallback) { 2122 if (mNativeClass == 0) { 2123 return null; 2124 } 2125 2126 HitTestResult result = new HitTestResult(); 2127 if (nativeHasCursorNode()) { 2128 if (nativeCursorIsTextInput()) { 2129 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2130 } else { 2131 String text = nativeCursorText(); 2132 if (text != null) { 2133 if (text.startsWith(SCHEME_TEL)) { 2134 result.setType(HitTestResult.PHONE_TYPE); 2135 result.setExtra(text.substring(SCHEME_TEL.length())); 2136 } else if (text.startsWith(SCHEME_MAILTO)) { 2137 result.setType(HitTestResult.EMAIL_TYPE); 2138 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2139 } else if (text.startsWith(SCHEME_GEO)) { 2140 result.setType(HitTestResult.GEO_TYPE); 2141 result.setExtra(URLDecoder.decode(text 2142 .substring(SCHEME_GEO.length()))); 2143 } else if (nativeCursorIsAnchor()) { 2144 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2145 result.setExtra(text); 2146 } 2147 } 2148 } 2149 } else if (fallback != null) { 2150 /* If webkit causes a rebuild while the long press is in progress, 2151 * the cursor node may be reset, even if it is still around. This 2152 * uses the cursor node saved when the touch began. Since the 2153 * nativeImageURI below only changes the result if it is successful, 2154 * this uses the data beneath the touch if available or the original 2155 * tap data otherwise. 2156 */ 2157 Log.v(LOGTAG, "hitTestResult use fallback"); 2158 result = fallback; 2159 } 2160 int type = result.getType(); 2161 if (type == HitTestResult.UNKNOWN_TYPE 2162 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2163 // Now check to see if it is an image. 2164 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2165 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2166 String text = nativeImageURI(contentX, contentY); 2167 if (text != null) { 2168 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2169 HitTestResult.IMAGE_TYPE : 2170 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2171 result.setExtra(text); 2172 } 2173 } 2174 return result; 2175 } 2176 2177 // Called by JNI when the DOM has changed the focus. Clear the focus so 2178 // that new keys will go to the newly focused field 2179 private void domChangedFocus() { 2180 if (inEditingMode()) { 2181 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2182 } 2183 } 2184 /** 2185 * Request the anchor or image element URL at the last tapped point. 2186 * If hrefMsg is null, this method returns immediately and does not 2187 * dispatch hrefMsg to its target. If the tapped point hits an image, 2188 * an anchor, or an image in an anchor, the message associates 2189 * strings in named keys in its data. The value paired with the key 2190 * may be an empty string. 2191 * 2192 * @param hrefMsg This message will be dispatched with the result of the 2193 * request. The message data contains three keys: 2194 * - "url" returns the anchor's href attribute. 2195 * - "title" returns the anchor's text. 2196 * - "src" returns the image's src attribute. 2197 */ 2198 public void requestFocusNodeHref(Message hrefMsg) { 2199 if (hrefMsg == null) { 2200 return; 2201 } 2202 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2203 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2204 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2205 contentX, contentY, hrefMsg); 2206 } 2207 2208 /** 2209 * Request the url of the image last touched by the user. msg will be sent 2210 * to its target with a String representing the url as its object. 2211 * 2212 * @param msg This message will be dispatched with the result of the request 2213 * as the data member with "url" as key. The result can be null. 2214 */ 2215 public void requestImageRef(Message msg) { 2216 if (0 == mNativeClass) return; // client isn't initialized 2217 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2218 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2219 String ref = nativeImageURI(contentX, contentY); 2220 Bundle data = msg.getData(); 2221 data.putString("url", ref); 2222 msg.setData(data); 2223 msg.sendToTarget(); 2224 } 2225 2226 static int pinLoc(int x, int viewMax, int docMax) { 2227// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2228 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2229 // pin the short document to the top/left of the screen 2230 x = 0; 2231// Log.d(LOGTAG, "--- center " + x); 2232 } else if (x < 0) { 2233 x = 0; 2234// Log.d(LOGTAG, "--- zero"); 2235 } else if (x + viewMax > docMax) { 2236 x = docMax - viewMax; 2237// Log.d(LOGTAG, "--- pin " + x); 2238 } 2239 return x; 2240 } 2241 2242 // Expects x in view coordinates 2243 int pinLocX(int x) { 2244 if (mInOverScrollMode) return x; 2245 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2246 } 2247 2248 // Expects y in view coordinates 2249 int pinLocY(int y) { 2250 if (mInOverScrollMode) return y; 2251 return pinLoc(y, getViewHeightWithTitle(), 2252 computeRealVerticalScrollRange() + getTitleHeight()); 2253 } 2254 2255 /** 2256 * A title bar which is embedded in this WebView, and scrolls along with it 2257 * vertically, but not horizontally. 2258 */ 2259 private View mTitleBar; 2260 2261 /** 2262 * Add or remove a title bar to be embedded into the WebView, and scroll 2263 * along with it vertically, while remaining in view horizontally. Pass 2264 * null to remove the title bar from the WebView, and return to drawing 2265 * the WebView normally without translating to account for the title bar. 2266 * @hide 2267 */ 2268 public void setEmbeddedTitleBar(View v) { 2269 if (mTitleBar == v) return; 2270 if (mTitleBar != null) { 2271 removeView(mTitleBar); 2272 } 2273 if (null != v) { 2274 addView(v, new AbsoluteLayout.LayoutParams( 2275 ViewGroup.LayoutParams.MATCH_PARENT, 2276 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2277 } 2278 mTitleBar = v; 2279 } 2280 2281 /** 2282 * Given a distance in view space, convert it to content space. Note: this 2283 * does not reflect translation, just scaling, so this should not be called 2284 * with coordinates, but should be called for dimensions like width or 2285 * height. 2286 */ 2287 private int viewToContentDimension(int d) { 2288 return Math.round(d * mZoomManager.getInvScale()); 2289 } 2290 2291 /** 2292 * Given an x coordinate in view space, convert it to content space. Also 2293 * may be used for absolute heights (such as for the WebTextView's 2294 * textSize, which is unaffected by the height of the title bar). 2295 */ 2296 /*package*/ int viewToContentX(int x) { 2297 return viewToContentDimension(x); 2298 } 2299 2300 /** 2301 * Given a y coordinate in view space, convert it to content space. 2302 * Takes into account the height of the title bar if there is one 2303 * embedded into the WebView. 2304 */ 2305 /*package*/ int viewToContentY(int y) { 2306 return viewToContentDimension(y - getTitleHeight()); 2307 } 2308 2309 /** 2310 * Given a x coordinate in view space, convert it to content space. 2311 * Returns the result as a float. 2312 */ 2313 private float viewToContentXf(int x) { 2314 return x * mZoomManager.getInvScale(); 2315 } 2316 2317 /** 2318 * Given a y coordinate in view space, convert it to content space. 2319 * Takes into account the height of the title bar if there is one 2320 * embedded into the WebView. Returns the result as a float. 2321 */ 2322 private float viewToContentYf(int y) { 2323 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2324 } 2325 2326 /** 2327 * Given a distance in content space, convert it to view space. Note: this 2328 * does not reflect translation, just scaling, so this should not be called 2329 * with coordinates, but should be called for dimensions like width or 2330 * height. 2331 */ 2332 /*package*/ int contentToViewDimension(int d) { 2333 return Math.round(d * mZoomManager.getScale()); 2334 } 2335 2336 /** 2337 * Given an x coordinate in content space, convert it to view 2338 * space. 2339 */ 2340 /*package*/ int contentToViewX(int x) { 2341 return contentToViewDimension(x); 2342 } 2343 2344 /** 2345 * Given a y coordinate in content space, convert it to view 2346 * space. Takes into account the height of the title bar. 2347 */ 2348 /*package*/ int contentToViewY(int y) { 2349 return contentToViewDimension(y) + getTitleHeight(); 2350 } 2351 2352 private Rect contentToViewRect(Rect x) { 2353 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2354 contentToViewX(x.right), contentToViewY(x.bottom)); 2355 } 2356 2357 /* To invalidate a rectangle in content coordinates, we need to transform 2358 the rect into view coordinates, so we can then call invalidate(...). 2359 2360 Normally, we would just call contentToView[XY](...), which eventually 2361 calls Math.round(coordinate * mActualScale). However, for invalidates, 2362 we need to account for the slop that occurs with antialiasing. To 2363 address that, we are a little more liberal in the size of the rect that 2364 we invalidate. 2365 2366 This liberal calculation calls floor() for the top/left, and ceil() for 2367 the bottom/right coordinates. This catches the possible extra pixels of 2368 antialiasing that we might have missed with just round(). 2369 */ 2370 2371 // Called by JNI to invalidate the View, given rectangle coordinates in 2372 // content space 2373 private void viewInvalidate(int l, int t, int r, int b) { 2374 final float scale = mZoomManager.getScale(); 2375 final int dy = getTitleHeight(); 2376 invalidate((int)Math.floor(l * scale), 2377 (int)Math.floor(t * scale) + dy, 2378 (int)Math.ceil(r * scale), 2379 (int)Math.ceil(b * scale) + dy); 2380 } 2381 2382 // Called by JNI to invalidate the View after a delay, given rectangle 2383 // coordinates in content space 2384 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2385 final float scale = mZoomManager.getScale(); 2386 final int dy = getTitleHeight(); 2387 postInvalidateDelayed(delay, 2388 (int)Math.floor(l * scale), 2389 (int)Math.floor(t * scale) + dy, 2390 (int)Math.ceil(r * scale), 2391 (int)Math.ceil(b * scale) + dy); 2392 } 2393 2394 private void invalidateContentRect(Rect r) { 2395 viewInvalidate(r.left, r.top, r.right, r.bottom); 2396 } 2397 2398 // stop the scroll animation, and don't let a subsequent fling add 2399 // to the existing velocity 2400 private void abortAnimation() { 2401 mScroller.abortAnimation(); 2402 mLastVelocity = 0; 2403 } 2404 2405 /* call from webcoreview.draw(), so we're still executing in the UI thread 2406 */ 2407 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2408 2409 // premature data from webkit, ignore 2410 if ((w | h) == 0) { 2411 return; 2412 } 2413 2414 // don't abort a scroll animation if we didn't change anything 2415 if (mContentWidth != w || mContentHeight != h) { 2416 // record new dimensions 2417 mContentWidth = w; 2418 mContentHeight = h; 2419 // If history Picture is drawn, don't update scroll. They will be 2420 // updated when we get out of that mode. 2421 if (!mDrawHistory) { 2422 // repin our scroll, taking into account the new content size 2423 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2424 if (!mScroller.isFinished()) { 2425 // We are in the middle of a scroll. Repin the final scroll 2426 // position. 2427 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2428 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2429 } 2430 } 2431 } 2432 contentSizeChanged(updateLayout); 2433 } 2434 2435 // Used to avoid sending many visible rect messages. 2436 private Rect mLastVisibleRectSent; 2437 private Rect mLastGlobalRect; 2438 2439 Rect sendOurVisibleRect() { 2440 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2441 Rect rect = new Rect(); 2442 calcOurContentVisibleRect(rect); 2443 // Rect.equals() checks for null input. 2444 if (!rect.equals(mLastVisibleRectSent)) { 2445 Point pos = new Point(rect.left, rect.top); 2446 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2447 nativeMoveGeneration(), mUserScroll ? 1 : 0, pos); 2448 mLastVisibleRectSent = rect; 2449 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2450 } 2451 Rect globalRect = new Rect(); 2452 if (getGlobalVisibleRect(globalRect) 2453 && !globalRect.equals(mLastGlobalRect)) { 2454 if (DebugFlags.WEB_VIEW) { 2455 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2456 + globalRect.top + ",r=" + globalRect.right + ",b=" 2457 + globalRect.bottom); 2458 } 2459 // TODO: the global offset is only used by windowRect() 2460 // in ChromeClientAndroid ; other clients such as touch 2461 // and mouse events could return view + screen relative points. 2462 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2463 mLastGlobalRect = globalRect; 2464 } 2465 return rect; 2466 } 2467 2468 // Sets r to be the visible rectangle of our webview in view coordinates 2469 private void calcOurVisibleRect(Rect r) { 2470 Point p = new Point(); 2471 getGlobalVisibleRect(r, p); 2472 r.offset(-p.x, -p.y); 2473 } 2474 2475 // Sets r to be our visible rectangle in content coordinates 2476 private void calcOurContentVisibleRect(Rect r) { 2477 calcOurVisibleRect(r); 2478 r.left = viewToContentX(r.left); 2479 // viewToContentY will remove the total height of the title bar. Add 2480 // the visible height back in to account for the fact that if the title 2481 // bar is partially visible, the part of the visible rect which is 2482 // displaying our content is displaced by that amount. 2483 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2484 r.right = viewToContentX(r.right); 2485 r.bottom = viewToContentY(r.bottom); 2486 } 2487 2488 // Sets r to be our visible rectangle in content coordinates. We use this 2489 // method on the native side to compute the position of the fixed layers. 2490 // Uses floating coordinates (necessary to correctly place elements when 2491 // the scale factor is not 1) 2492 private void calcOurContentVisibleRectF(RectF r) { 2493 Rect ri = new Rect(0,0,0,0); 2494 calcOurVisibleRect(ri); 2495 r.left = viewToContentXf(ri.left); 2496 // viewToContentY will remove the total height of the title bar. Add 2497 // the visible height back in to account for the fact that if the title 2498 // bar is partially visible, the part of the visible rect which is 2499 // displaying our content is displaced by that amount. 2500 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2501 r.right = viewToContentXf(ri.right); 2502 r.bottom = viewToContentYf(ri.bottom); 2503 } 2504 2505 static class ViewSizeData { 2506 int mWidth; 2507 int mHeight; 2508 int mTextWrapWidth; 2509 int mAnchorX; 2510 int mAnchorY; 2511 float mScale; 2512 boolean mIgnoreHeight; 2513 } 2514 2515 /** 2516 * Compute unzoomed width and height, and if they differ from the last 2517 * values we sent, send them to webkit (to be used as new viewport) 2518 * 2519 * @param force ensures that the message is sent to webkit even if the width 2520 * or height has not changed since the last message 2521 * 2522 * @return true if new values were sent 2523 */ 2524 boolean sendViewSizeZoom(boolean force) { 2525 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2526 2527 int viewWidth = getViewWidth(); 2528 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2529 int newHeight = Math.round((getViewHeightWithTitle() - getTitleHeight()) * mZoomManager.getInvScale()); 2530 /* 2531 * Because the native side may have already done a layout before the 2532 * View system was able to measure us, we have to send a height of 0 to 2533 * remove excess whitespace when we grow our width. This will trigger a 2534 * layout and a change in content size. This content size change will 2535 * mean that contentSizeChanged will either call this method directly or 2536 * indirectly from onSizeChanged. 2537 */ 2538 if (newWidth > mLastWidthSent && mWrapContent) { 2539 newHeight = 0; 2540 } 2541 // Avoid sending another message if the dimensions have not changed. 2542 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force) { 2543 ViewSizeData data = new ViewSizeData(); 2544 data.mWidth = newWidth; 2545 data.mHeight = newHeight; 2546 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2547 data.mScale = mZoomManager.getScale(); 2548 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2549 && !mHeightCanMeasure; 2550 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2551 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2552 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2553 mLastWidthSent = newWidth; 2554 mLastHeightSent = newHeight; 2555 mZoomManager.clearDocumentAnchor(); 2556 return true; 2557 } 2558 return false; 2559 } 2560 2561 private int computeRealHorizontalScrollRange() { 2562 if (mDrawHistory) { 2563 return mHistoryWidth; 2564 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2565 && !mZoomManager.canZoomOut()) { 2566 // only honor the scrollbar mode when it is at minimum zoom level 2567 return computeHorizontalScrollExtent(); 2568 } else { 2569 // to avoid rounding error caused unnecessary scrollbar, use floor 2570 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2571 } 2572 } 2573 2574 @Override 2575 protected int computeHorizontalScrollRange() { 2576 int range = computeRealHorizontalScrollRange(); 2577 2578 // Adjust reported range if overscrolled to compress the scroll bars 2579 final int scrollX = mScrollX; 2580 final int overscrollRight = computeMaxScrollX(); 2581 if (scrollX < 0) { 2582 range -= scrollX; 2583 } else if (scrollX > overscrollRight) { 2584 range += scrollX - overscrollRight; 2585 } 2586 2587 return range; 2588 } 2589 2590 @Override 2591 protected int computeHorizontalScrollOffset() { 2592 return Math.max(mScrollX, 0); 2593 } 2594 2595 private int computeRealVerticalScrollRange() { 2596 if (mDrawHistory) { 2597 return mHistoryHeight; 2598 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2599 && !mZoomManager.canZoomOut()) { 2600 // only honor the scrollbar mode when it is at minimum zoom level 2601 return computeVerticalScrollExtent(); 2602 } else { 2603 // to avoid rounding error caused unnecessary scrollbar, use floor 2604 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2605 } 2606 } 2607 2608 @Override 2609 protected int computeVerticalScrollRange() { 2610 int range = computeRealVerticalScrollRange(); 2611 2612 // Adjust reported range if overscrolled to compress the scroll bars 2613 final int scrollY = mScrollY; 2614 final int overscrollBottom = computeMaxScrollY(); 2615 if (scrollY < 0) { 2616 range -= scrollY; 2617 } else if (scrollY > overscrollBottom) { 2618 range += scrollY - overscrollBottom; 2619 } 2620 2621 return range; 2622 } 2623 2624 @Override 2625 protected int computeVerticalScrollOffset() { 2626 return Math.max(mScrollY - getTitleHeight(), 0); 2627 } 2628 2629 @Override 2630 protected int computeVerticalScrollExtent() { 2631 return getViewHeight(); 2632 } 2633 2634 /** @hide */ 2635 @Override 2636 protected void onDrawVerticalScrollBar(Canvas canvas, 2637 Drawable scrollBar, 2638 int l, int t, int r, int b) { 2639 if (mScrollY < 0) { 2640 t -= mScrollY; 2641 } 2642 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2643 scrollBar.draw(canvas); 2644 } 2645 2646 @Override 2647 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2648 boolean clampedY) { 2649 // Special-case layer scrolling so that we do not trigger normal scroll 2650 // updating. 2651 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2652 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2653 mScrollingLayerRect.left = scrollX; 2654 mScrollingLayerRect.top = scrollY; 2655 invalidate(); 2656 return; 2657 } 2658 mInOverScrollMode = false; 2659 int maxX = computeMaxScrollX(); 2660 int maxY = computeMaxScrollY(); 2661 if (maxX == 0) { 2662 // do not over scroll x if the page just fits the screen 2663 scrollX = pinLocX(scrollX); 2664 } else if (scrollX < 0 || scrollX > maxX) { 2665 mInOverScrollMode = true; 2666 } 2667 if (scrollY < 0 || scrollY > maxY) { 2668 mInOverScrollMode = true; 2669 } 2670 2671 int oldX = mScrollX; 2672 int oldY = mScrollY; 2673 2674 super.scrollTo(scrollX, scrollY); 2675 2676 if (mOverScrollGlow != null) { 2677 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2678 } 2679 } 2680 2681 /** 2682 * Get the url for the current page. This is not always the same as the url 2683 * passed to WebViewClient.onPageStarted because although the load for 2684 * that url has begun, the current page may not have changed. 2685 * @return The url for the current page. 2686 */ 2687 public String getUrl() { 2688 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2689 return h != null ? h.getUrl() : null; 2690 } 2691 2692 /** 2693 * Get the original url for the current page. This is not always the same 2694 * as the url passed to WebViewClient.onPageStarted because although the 2695 * load for that url has begun, the current page may not have changed. 2696 * Also, there may have been redirects resulting in a different url to that 2697 * originally requested. 2698 * @return The url that was originally requested for the current page. 2699 */ 2700 public String getOriginalUrl() { 2701 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2702 return h != null ? h.getOriginalUrl() : null; 2703 } 2704 2705 /** 2706 * Get the title for the current page. This is the title of the current page 2707 * until WebViewClient.onReceivedTitle is called. 2708 * @return The title for the current page. 2709 */ 2710 public String getTitle() { 2711 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2712 return h != null ? h.getTitle() : null; 2713 } 2714 2715 /** 2716 * Get the favicon for the current page. This is the favicon of the current 2717 * page until WebViewClient.onReceivedIcon is called. 2718 * @return The favicon for the current page. 2719 */ 2720 public Bitmap getFavicon() { 2721 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2722 return h != null ? h.getFavicon() : null; 2723 } 2724 2725 /** 2726 * Get the touch icon url for the apple-touch-icon <link> element, or 2727 * a URL on this site's server pointing to the standard location of a 2728 * touch icon. 2729 * @hide 2730 */ 2731 public String getTouchIconUrl() { 2732 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2733 return h != null ? h.getTouchIconUrl() : null; 2734 } 2735 2736 /** 2737 * Get the progress for the current page. 2738 * @return The progress for the current page between 0 and 100. 2739 */ 2740 public int getProgress() { 2741 return mCallbackProxy.getProgress(); 2742 } 2743 2744 /** 2745 * @return the height of the HTML content. 2746 */ 2747 public int getContentHeight() { 2748 return mContentHeight; 2749 } 2750 2751 /** 2752 * @return the width of the HTML content. 2753 * @hide 2754 */ 2755 public int getContentWidth() { 2756 return mContentWidth; 2757 } 2758 2759 /** 2760 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2761 * is a global requests, not restricted to just this webview. This can be 2762 * useful if the application has been paused. 2763 */ 2764 public void pauseTimers() { 2765 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2766 } 2767 2768 /** 2769 * Resume all layout, parsing, and JavaScript timers for all webviews. 2770 * This will resume dispatching all timers. 2771 */ 2772 public void resumeTimers() { 2773 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2774 } 2775 2776 /** 2777 * Call this to pause any extra processing associated with this WebView and 2778 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2779 * is taken offscreen, this could be called to reduce unnecessary CPU or 2780 * network traffic. When the WebView is again "active", call onResume(). 2781 * 2782 * Note that this differs from pauseTimers(), which affects all WebViews. 2783 */ 2784 public void onPause() { 2785 if (!mIsPaused) { 2786 mIsPaused = true; 2787 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2788 } 2789 } 2790 2791 /** 2792 * Call this to resume a WebView after a previous call to onPause(). 2793 */ 2794 public void onResume() { 2795 if (mIsPaused) { 2796 mIsPaused = false; 2797 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2798 } 2799 } 2800 2801 /** 2802 * Returns true if the view is paused, meaning onPause() was called. Calling 2803 * onResume() sets the paused state back to false. 2804 * @hide 2805 */ 2806 public boolean isPaused() { 2807 return mIsPaused; 2808 } 2809 2810 /** 2811 * Call this to inform the view that memory is low so that it can 2812 * free any available memory. 2813 */ 2814 public void freeMemory() { 2815 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2816 } 2817 2818 /** 2819 * Clear the resource cache. Note that the cache is per-application, so 2820 * this will clear the cache for all WebViews used. 2821 * 2822 * @param includeDiskFiles If false, only the RAM cache is cleared. 2823 */ 2824 public void clearCache(boolean includeDiskFiles) { 2825 // Note: this really needs to be a static method as it clears cache for all 2826 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2827 // we can't make this static. 2828 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2829 includeDiskFiles ? 1 : 0, 0); 2830 } 2831 2832 /** 2833 * Make sure that clearing the form data removes the adapter from the 2834 * currently focused textfield if there is one. 2835 */ 2836 public void clearFormData() { 2837 if (inEditingMode()) { 2838 AutoCompleteAdapter adapter = null; 2839 mWebTextView.setAdapterCustom(adapter); 2840 } 2841 } 2842 2843 /** 2844 * Tell the WebView to clear its internal back/forward list. 2845 */ 2846 public void clearHistory() { 2847 mCallbackProxy.getBackForwardList().setClearPending(); 2848 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2849 } 2850 2851 /** 2852 * Clear the SSL preferences table stored in response to proceeding with SSL 2853 * certificate errors. 2854 */ 2855 public void clearSslPreferences() { 2856 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2857 } 2858 2859 /** 2860 * Return the WebBackForwardList for this WebView. This contains the 2861 * back/forward list for use in querying each item in the history stack. 2862 * This is a copy of the private WebBackForwardList so it contains only a 2863 * snapshot of the current state. Multiple calls to this method may return 2864 * different objects. The object returned from this method will not be 2865 * updated to reflect any new state. 2866 */ 2867 public WebBackForwardList copyBackForwardList() { 2868 return mCallbackProxy.getBackForwardList().clone(); 2869 } 2870 2871 /* 2872 * Highlight and scroll to the next occurance of String in findAll. 2873 * Wraps the page infinitely, and scrolls. Must be called after 2874 * calling findAll. 2875 * 2876 * @param forward Direction to search. 2877 */ 2878 public void findNext(boolean forward) { 2879 if (0 == mNativeClass) return; // client isn't initialized 2880 nativeFindNext(forward); 2881 } 2882 2883 /* 2884 * Find all instances of find on the page and highlight them. 2885 * @param find String to find. 2886 * @return int The number of occurances of the String "find" 2887 * that were found. 2888 */ 2889 public int findAll(String find) { 2890 if (0 == mNativeClass) return 0; // client isn't initialized 2891 int result = find != null ? nativeFindAll(find.toLowerCase(), 2892 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 2893 invalidate(); 2894 mLastFind = find; 2895 return result; 2896 } 2897 2898 /** 2899 * Start an ActionMode for finding text in this WebView. 2900 * @param text If non-null, will be the initial text to search for. 2901 * Otherwise, the last String searched for in this WebView will 2902 * be used to start. 2903 */ 2904 public void showFindDialog(String text) { 2905 mFindCallback = new FindActionModeCallback(mContext); 2906 setFindIsUp(true); 2907 mFindCallback.setWebView(this); 2908 View titleBar = mTitleBar; 2909 startActionMode(mFindCallback); 2910 if (text == null) { 2911 text = mLastFind; 2912 } 2913 if (text != null) { 2914 mFindCallback.setText(text); 2915 } 2916 } 2917 2918 /** 2919 * Keep track of the find callback so that we can remove its titlebar if 2920 * necessary. 2921 */ 2922 private FindActionModeCallback mFindCallback; 2923 2924 /** 2925 * Toggle whether the find dialog is showing, for both native and Java. 2926 */ 2927 private void setFindIsUp(boolean isUp) { 2928 mFindIsUp = isUp; 2929 if (0 == mNativeClass) return; // client isn't initialized 2930 nativeSetFindIsUp(isUp); 2931 } 2932 2933 /** 2934 * Return the index of the currently highlighted match. 2935 */ 2936 int findIndex() { 2937 if (0 == mNativeClass) return -1; 2938 return nativeFindIndex(); 2939 } 2940 2941 // Used to know whether the find dialog is open. Affects whether 2942 // or not we draw the highlights for matches. 2943 private boolean mFindIsUp; 2944 2945 // Keep track of the last string sent, so we can search again when find is 2946 // reopened. 2947 private String mLastFind; 2948 2949 /** 2950 * Return the first substring consisting of the address of a physical 2951 * location. Currently, only addresses in the United States are detected, 2952 * and consist of: 2953 * - a house number 2954 * - a street name 2955 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2956 * - a city name 2957 * - a state or territory, either spelled out or two-letter abbr. 2958 * - an optional 5 digit or 9 digit zip code. 2959 * 2960 * All names must be correctly capitalized, and the zip code, if present, 2961 * must be valid for the state. The street type must be a standard USPS 2962 * spelling or abbreviation. The state or territory must also be spelled 2963 * or abbreviated using USPS standards. The house number may not exceed 2964 * five digits. 2965 * @param addr The string to search for addresses. 2966 * 2967 * @return the address, or if no address is found, return null. 2968 */ 2969 public static String findAddress(String addr) { 2970 return findAddress(addr, false); 2971 } 2972 2973 /** 2974 * @hide 2975 * Return the first substring consisting of the address of a physical 2976 * location. Currently, only addresses in the United States are detected, 2977 * and consist of: 2978 * - a house number 2979 * - a street name 2980 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2981 * - a city name 2982 * - a state or territory, either spelled out or two-letter abbr. 2983 * - an optional 5 digit or 9 digit zip code. 2984 * 2985 * Names are optionally capitalized, and the zip code, if present, 2986 * must be valid for the state. The street type must be a standard USPS 2987 * spelling or abbreviation. The state or territory must also be spelled 2988 * or abbreviated using USPS standards. The house number may not exceed 2989 * five digits. 2990 * @param addr The string to search for addresses. 2991 * @param caseInsensitive addr Set to true to make search ignore case. 2992 * 2993 * @return the address, or if no address is found, return null. 2994 */ 2995 public static String findAddress(String addr, boolean caseInsensitive) { 2996 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2997 } 2998 2999 /* 3000 * Clear the highlighting surrounding text matches created by findAll. 3001 */ 3002 public void clearMatches() { 3003 if (mNativeClass == 0) 3004 return; 3005 nativeSetFindIsEmpty(); 3006 invalidate(); 3007 } 3008 3009 /** 3010 * Called when the find ActionMode ends. 3011 */ 3012 void notifyFindDialogDismissed() { 3013 mFindCallback = null; 3014 if (mWebViewCore == null) { 3015 return; 3016 } 3017 clearMatches(); 3018 setFindIsUp(false); 3019 // Now that the dialog has been removed, ensure that we scroll to a 3020 // location that is not beyond the end of the page. 3021 pinScrollTo(mScrollX, mScrollY, false, 0); 3022 invalidate(); 3023 } 3024 3025 /** 3026 * Query the document to see if it contains any image references. The 3027 * message object will be dispatched with arg1 being set to 1 if images 3028 * were found and 0 if the document does not reference any images. 3029 * @param response The message that will be dispatched with the result. 3030 */ 3031 public void documentHasImages(Message response) { 3032 if (response == null) { 3033 return; 3034 } 3035 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3036 } 3037 3038 /** 3039 * Request the scroller to abort any ongoing animation 3040 * 3041 * @hide 3042 */ 3043 public void stopScroll() { 3044 mScroller.forceFinished(true); 3045 mLastVelocity = 0; 3046 } 3047 3048 @Override 3049 public void computeScroll() { 3050 if (mScroller.computeScrollOffset()) { 3051 int oldX = mScrollX; 3052 int oldY = mScrollY; 3053 int x = mScroller.getCurrX(); 3054 int y = mScroller.getCurrY(); 3055 invalidate(); // So we draw again 3056 3057 if (!mScroller.isFinished()) { 3058 int rangeX = computeMaxScrollX(); 3059 int rangeY = computeMaxScrollY(); 3060 int overflingDistance = mOverflingDistance; 3061 3062 // Use the layer's scroll data if needed. 3063 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3064 oldX = mScrollingLayerRect.left; 3065 oldY = mScrollingLayerRect.top; 3066 rangeX = mScrollingLayerRect.right; 3067 rangeY = mScrollingLayerRect.bottom; 3068 // No overscrolling for layers. 3069 overflingDistance = 0; 3070 } 3071 3072 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3073 rangeX, rangeY, 3074 overflingDistance, overflingDistance, false); 3075 3076 if (mOverScrollGlow != null) { 3077 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3078 } 3079 } else { 3080 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3081 mScrollX = x; 3082 mScrollY = y; 3083 } else { 3084 // Update the layer position instead of WebView. 3085 nativeScrollLayer(mScrollingLayer, x, y); 3086 mScrollingLayerRect.left = x; 3087 mScrollingLayerRect.top = y; 3088 } 3089 abortAnimation(); 3090 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3091 WebViewCore.resumePriority(); 3092 if (!mSelectingText) { 3093 WebViewCore.resumeUpdatePicture(mWebViewCore); 3094 } 3095 } 3096 } else { 3097 super.computeScroll(); 3098 } 3099 } 3100 3101 private static int computeDuration(int dx, int dy) { 3102 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3103 int duration = distance * 1000 / STD_SPEED; 3104 return Math.min(duration, MAX_DURATION); 3105 } 3106 3107 // helper to pin the scrollBy parameters (already in view coordinates) 3108 // returns true if the scroll was changed 3109 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3110 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3111 } 3112 // helper to pin the scrollTo parameters (already in view coordinates) 3113 // returns true if the scroll was changed 3114 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3115 x = pinLocX(x); 3116 y = pinLocY(y); 3117 int dx = x - mScrollX; 3118 int dy = y - mScrollY; 3119 3120 if ((dx | dy) == 0) { 3121 return false; 3122 } 3123 abortAnimation(); 3124 if (animate) { 3125 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3126 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3127 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3128 awakenScrollBars(mScroller.getDuration()); 3129 invalidate(); 3130 } else { 3131 scrollTo(x, y); 3132 } 3133 return true; 3134 } 3135 3136 // Scale from content to view coordinates, and pin. 3137 // Also called by jni webview.cpp 3138 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3139 if (mDrawHistory) { 3140 // disallow WebView to change the scroll position as History Picture 3141 // is used in the view system. 3142 // TODO: as we switchOutDrawHistory when trackball or navigation 3143 // keys are hit, this should be safe. Right? 3144 return false; 3145 } 3146 cx = contentToViewDimension(cx); 3147 cy = contentToViewDimension(cy); 3148 if (mHeightCanMeasure) { 3149 // move our visible rect according to scroll request 3150 if (cy != 0) { 3151 Rect tempRect = new Rect(); 3152 calcOurVisibleRect(tempRect); 3153 tempRect.offset(cx, cy); 3154 requestRectangleOnScreen(tempRect); 3155 } 3156 // FIXME: We scroll horizontally no matter what because currently 3157 // ScrollView and ListView will not scroll horizontally. 3158 // FIXME: Why do we only scroll horizontally if there is no 3159 // vertical scroll? 3160// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3161 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3162 } else { 3163 return pinScrollBy(cx, cy, animate, 0); 3164 } 3165 } 3166 3167 /** 3168 * Called by CallbackProxy when the page starts loading. 3169 * @param url The URL of the page which has started loading. 3170 */ 3171 /* package */ void onPageStarted(String url) { 3172 // every time we start a new page, we want to reset the 3173 // WebView certificate: if the new site is secure, we 3174 // will reload it and get a new certificate set; 3175 // if the new site is not secure, the certificate must be 3176 // null, and that will be the case 3177 setCertificate(null); 3178 3179 // reset the flag since we set to true in if need after 3180 // loading is see onPageFinished(Url) 3181 mAccessibilityScriptInjected = false; 3182 } 3183 3184 /** 3185 * Called by CallbackProxy when the page finishes loading. 3186 * @param url The URL of the page which has finished loading. 3187 */ 3188 /* package */ void onPageFinished(String url) { 3189 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3190 // If the user is now on a different page, or has scrolled the page 3191 // past the point where the title bar is offscreen, ignore the 3192 // scroll request. 3193 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3194 && mScrollX == 0 && mScrollY == 0) { 3195 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3196 SLIDE_TITLE_DURATION); 3197 } 3198 mPageThatNeedsToSlideTitleBarOffScreen = null; 3199 } 3200 3201 injectAccessibilityForUrl(url); 3202 } 3203 3204 /** 3205 * This method injects accessibility in the loaded document if accessibility 3206 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3207 * If no URL specific script is found or JavaScript is disabled we fallback to 3208 * the default {@link AccessibilityInjector} implementation. 3209 * </p> 3210 * If the URL has the "axs" paramter set to 1 it has already done the 3211 * script injection so we do nothing. If the parameter is set to 0 3212 * the URL opts out accessibility script injection so we fall back to 3213 * the default {@link AccessibilityInjector}. 3214 * </p> 3215 * Note: If the user has not opted-in the accessibility script injection no scripts 3216 * are injected rather the default {@link AccessibilityInjector} implementation 3217 * is used. 3218 * 3219 * @param url The URL loaded by this {@link WebView}. 3220 */ 3221 private void injectAccessibilityForUrl(String url) { 3222 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3223 3224 if (!accessibilityManager.isEnabled()) { 3225 // it is possible that accessibility was turned off between reloads 3226 ensureAccessibilityScriptInjectorInstance(false); 3227 return; 3228 } 3229 3230 if (!getSettings().getJavaScriptEnabled()) { 3231 // no JS so we fallback to the basic buil-in support 3232 ensureAccessibilityScriptInjectorInstance(true); 3233 return; 3234 } 3235 3236 // check the URL "axs" parameter to choose appropriate action 3237 int axsParameterValue = getAxsUrlParameterValue(url); 3238 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3239 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3240 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3241 if (onDeviceScriptInjectionEnabled) { 3242 ensureAccessibilityScriptInjectorInstance(false); 3243 // neither script injected nor script injection opted out => we inject 3244 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3245 // TODO: Set this flag after successfull script injection. Maybe upon injection 3246 // the chooser should update the meta tag and we check it to declare success 3247 mAccessibilityScriptInjected = true; 3248 } else { 3249 // injection disabled so we fallback to the basic built-in support 3250 ensureAccessibilityScriptInjectorInstance(true); 3251 } 3252 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3253 // injection opted out so we fallback to the basic buil-in support 3254 ensureAccessibilityScriptInjectorInstance(true); 3255 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3256 ensureAccessibilityScriptInjectorInstance(false); 3257 // the URL provides accessibility but we still need to add our generic script 3258 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3259 } else { 3260 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3261 } 3262 } 3263 3264 /** 3265 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3266 * 3267 * @param present True to ensure an insance, false to ensure no instance. 3268 */ 3269 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3270 if (present && mAccessibilityInjector == null) { 3271 mAccessibilityInjector = new AccessibilityInjector(this); 3272 } else { 3273 mAccessibilityInjector = null; 3274 } 3275 } 3276 3277 /** 3278 * Gets the "axs" URL parameter value. 3279 * 3280 * @param url A url to fetch the paramter from. 3281 * @return The parameter value if such, -1 otherwise. 3282 */ 3283 private int getAxsUrlParameterValue(String url) { 3284 if (mMatchAxsUrlParameterPattern == null) { 3285 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3286 } 3287 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3288 if (matcher.find()) { 3289 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3290 return Integer.parseInt(keyValuePair.split("=")[1]); 3291 } 3292 return -1; 3293 } 3294 3295 /** 3296 * The URL of a page that sent a message to scroll the title bar off screen. 3297 * 3298 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3299 * title bar off the screen. Sometimes, the scroll position is set before 3300 * the page finishes loading. Rather than scrolling while the page is still 3301 * loading, keep track of the URL and new scroll position so we can perform 3302 * the scroll once the page finishes loading. 3303 */ 3304 private String mPageThatNeedsToSlideTitleBarOffScreen; 3305 3306 /** 3307 * The destination Y scroll position to be used when the page finishes 3308 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3309 */ 3310 private int mYDistanceToSlideTitleOffScreen; 3311 3312 // scale from content to view coordinates, and pin 3313 // return true if pin caused the final x/y different than the request cx/cy, 3314 // and a future scroll may reach the request cx/cy after our size has 3315 // changed 3316 // return false if the view scroll to the exact position as it is requested, 3317 // where negative numbers are taken to mean 0 3318 private boolean setContentScrollTo(int cx, int cy) { 3319 if (mDrawHistory) { 3320 // disallow WebView to change the scroll position as History Picture 3321 // is used in the view system. 3322 // One known case where this is called is that WebCore tries to 3323 // restore the scroll position. As history Picture already uses the 3324 // saved scroll position, it is ok to skip this. 3325 return false; 3326 } 3327 int vx; 3328 int vy; 3329 if ((cx | cy) == 0) { 3330 // If the page is being scrolled to (0,0), do not add in the title 3331 // bar's height, and simply scroll to (0,0). (The only other work 3332 // in contentToView_ is to multiply, so this would not change 0.) 3333 vx = 0; 3334 vy = 0; 3335 } else { 3336 vx = contentToViewX(cx); 3337 vy = contentToViewY(cy); 3338 } 3339// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3340// vx + " " + vy + "]"); 3341 // Some mobile sites attempt to scroll the title bar off the page by 3342 // scrolling to (0,1). If we are at the top left corner of the 3343 // page, assume this is an attempt to scroll off the title bar, and 3344 // animate the title bar off screen slowly enough that the user can see 3345 // it. 3346 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3347 && mTitleBar != null) { 3348 // FIXME: 100 should be defined somewhere as our max progress. 3349 if (getProgress() < 100) { 3350 // Wait to scroll the title bar off screen until the page has 3351 // finished loading. Keep track of the URL and the destination 3352 // Y position 3353 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3354 mYDistanceToSlideTitleOffScreen = vy; 3355 } else { 3356 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3357 } 3358 // Since we are animating, we have not yet reached the desired 3359 // scroll position. Do not return true to request another attempt 3360 return false; 3361 } 3362 pinScrollTo(vx, vy, false, 0); 3363 // If the request was to scroll to a negative coordinate, treat it as if 3364 // it was a request to scroll to 0 3365 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3366 return true; 3367 } else { 3368 return false; 3369 } 3370 } 3371 3372 // scale from content to view coordinates, and pin 3373 private void spawnContentScrollTo(int cx, int cy) { 3374 if (mDrawHistory) { 3375 // disallow WebView to change the scroll position as History Picture 3376 // is used in the view system. 3377 return; 3378 } 3379 int vx = contentToViewX(cx); 3380 int vy = contentToViewY(cy); 3381 pinScrollTo(vx, vy, true, 0); 3382 } 3383 3384 /** 3385 * These are from webkit, and are in content coordinate system (unzoomed) 3386 */ 3387 private void contentSizeChanged(boolean updateLayout) { 3388 // suppress 0,0 since we usually see real dimensions soon after 3389 // this avoids drawing the prev content in a funny place. If we find a 3390 // way to consolidate these notifications, this check may become 3391 // obsolete 3392 if ((mContentWidth | mContentHeight) == 0) { 3393 return; 3394 } 3395 3396 if (mHeightCanMeasure) { 3397 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3398 || updateLayout) { 3399 requestLayout(); 3400 } 3401 } else if (mWidthCanMeasure) { 3402 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3403 || updateLayout) { 3404 requestLayout(); 3405 } 3406 } else { 3407 // If we don't request a layout, try to send our view size to the 3408 // native side to ensure that WebCore has the correct dimensions. 3409 sendViewSizeZoom(false); 3410 } 3411 } 3412 3413 /** 3414 * Set the WebViewClient that will receive various notifications and 3415 * requests. This will replace the current handler. 3416 * @param client An implementation of WebViewClient. 3417 */ 3418 public void setWebViewClient(WebViewClient client) { 3419 mCallbackProxy.setWebViewClient(client); 3420 } 3421 3422 /** 3423 * Gets the WebViewClient 3424 * @return the current WebViewClient instance. 3425 * 3426 *@hide pending API council approval. 3427 */ 3428 public WebViewClient getWebViewClient() { 3429 return mCallbackProxy.getWebViewClient(); 3430 } 3431 3432 /** 3433 * Register the interface to be used when content can not be handled by 3434 * the rendering engine, and should be downloaded instead. This will replace 3435 * the current handler. 3436 * @param listener An implementation of DownloadListener. 3437 */ 3438 public void setDownloadListener(DownloadListener listener) { 3439 mCallbackProxy.setDownloadListener(listener); 3440 } 3441 3442 /** 3443 * Set the chrome handler. This is an implementation of WebChromeClient for 3444 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3445 * This will replace the current handler. 3446 * @param client An implementation of WebChromeClient. 3447 */ 3448 public void setWebChromeClient(WebChromeClient client) { 3449 mCallbackProxy.setWebChromeClient(client); 3450 } 3451 3452 /** 3453 * Gets the chrome handler. 3454 * @return the current WebChromeClient instance. 3455 * 3456 * @hide API council approval. 3457 */ 3458 public WebChromeClient getWebChromeClient() { 3459 return mCallbackProxy.getWebChromeClient(); 3460 } 3461 3462 /** 3463 * Set the back/forward list client. This is an implementation of 3464 * WebBackForwardListClient for handling new items and changes in the 3465 * history index. 3466 * @param client An implementation of WebBackForwardListClient. 3467 * {@hide} 3468 */ 3469 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3470 mCallbackProxy.setWebBackForwardListClient(client); 3471 } 3472 3473 /** 3474 * Gets the WebBackForwardListClient. 3475 * {@hide} 3476 */ 3477 public WebBackForwardListClient getWebBackForwardListClient() { 3478 return mCallbackProxy.getWebBackForwardListClient(); 3479 } 3480 3481 /** 3482 * Set the Picture listener. This is an interface used to receive 3483 * notifications of a new Picture. 3484 * @param listener An implementation of WebView.PictureListener. 3485 */ 3486 public void setPictureListener(PictureListener listener) { 3487 mPictureListener = listener; 3488 } 3489 3490 /** 3491 * {@hide} 3492 */ 3493 /* FIXME: Debug only! Remove for SDK! */ 3494 public void externalRepresentation(Message callback) { 3495 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3496 } 3497 3498 /** 3499 * {@hide} 3500 */ 3501 /* FIXME: Debug only! Remove for SDK! */ 3502 public void documentAsText(Message callback) { 3503 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3504 } 3505 3506 /** 3507 * Use this function to bind an object to JavaScript so that the 3508 * methods can be accessed from JavaScript. 3509 * <p><strong>IMPORTANT:</strong> 3510 * <ul> 3511 * <li> Using addJavascriptInterface() allows JavaScript to control your 3512 * application. This can be a very useful feature or a dangerous security 3513 * issue. When the HTML in the WebView is untrustworthy (for example, part 3514 * or all of the HTML is provided by some person or process), then an 3515 * attacker could inject HTML that will execute your code and possibly any 3516 * code of the attacker's choosing.<br> 3517 * Do not use addJavascriptInterface() unless all of the HTML in this 3518 * WebView was written by you.</li> 3519 * <li> The Java object that is bound runs in another thread and not in 3520 * the thread that it was constructed in.</li> 3521 * </ul></p> 3522 * @param obj The class instance to bind to JavaScript, null instances are 3523 * ignored. 3524 * @param interfaceName The name to used to expose the instance in 3525 * JavaScript. 3526 */ 3527 public void addJavascriptInterface(Object obj, String interfaceName) { 3528 if (obj == null) { 3529 return; 3530 } 3531 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3532 arg.mObject = obj; 3533 arg.mInterfaceName = interfaceName; 3534 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3535 } 3536 3537 /** 3538 * Removes a previously added JavaScript interface with the given name. 3539 * @param interfaceName The name of the interface to remove. 3540 */ 3541 public void removeJavascriptInterface(String interfaceName) { 3542 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3543 arg.mInterfaceName = interfaceName; 3544 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3545 } 3546 3547 /** 3548 * Return the WebSettings object used to control the settings for this 3549 * WebView. 3550 * @return A WebSettings object that can be used to control this WebView's 3551 * settings. 3552 */ 3553 public WebSettings getSettings() { 3554 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3555 } 3556 3557 /** 3558 * Return the list of currently loaded plugins. 3559 * @return The list of currently loaded plugins. 3560 * 3561 * @deprecated This was used for Gears, which has been deprecated. 3562 */ 3563 @Deprecated 3564 public static synchronized PluginList getPluginList() { 3565 return new PluginList(); 3566 } 3567 3568 /** 3569 * @deprecated This was used for Gears, which has been deprecated. 3570 */ 3571 @Deprecated 3572 public void refreshPlugins(boolean reloadOpenPages) { } 3573 3574 //------------------------------------------------------------------------- 3575 // Override View methods 3576 //------------------------------------------------------------------------- 3577 3578 @Override 3579 protected void finalize() throws Throwable { 3580 try { 3581 destroy(); 3582 } finally { 3583 super.finalize(); 3584 } 3585 } 3586 3587 @Override 3588 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3589 if (child == mTitleBar) { 3590 // When drawing the title bar, move it horizontally to always show 3591 // at the top of the WebView. 3592 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3593 int newTop = Math.min(0, mScrollY); 3594 mTitleBar.setBottom(newTop + getTitleHeight()); 3595 mTitleBar.setTop(newTop); 3596 } 3597 return super.drawChild(canvas, child, drawingTime); 3598 } 3599 3600 private void drawContent(Canvas canvas) { 3601 // Update the buttons in the picture, so when we draw the picture 3602 // to the screen, they are in the correct state. 3603 // Tell the native side if user is a) touching the screen, 3604 // b) pressing the trackball down, or c) pressing the enter key 3605 // If the cursor is on a button, we need to draw it in the pressed 3606 // state. 3607 // If mNativeClass is 0, we should not reach here, so we do not 3608 // need to check it again. 3609 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3610 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3611 || mTrackballDown || mGotCenterDown, false); 3612 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3613 } 3614 3615 /** 3616 * Draw the background when beyond bounds 3617 * @param canvas Canvas to draw into 3618 */ 3619 private void drawOverScrollBackground(Canvas canvas) { 3620 if (mOverScrollBackground == null) { 3621 mOverScrollBackground = new Paint(); 3622 Bitmap bm = BitmapFactory.decodeResource( 3623 mContext.getResources(), 3624 com.android.internal.R.drawable.status_bar_background); 3625 mOverScrollBackground.setShader(new BitmapShader(bm, 3626 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3627 mOverScrollBorder = new Paint(); 3628 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3629 mOverScrollBorder.setStrokeWidth(0); 3630 mOverScrollBorder.setColor(0xffbbbbbb); 3631 } 3632 3633 int top = 0; 3634 int right = computeRealHorizontalScrollRange(); 3635 int bottom = top + computeRealVerticalScrollRange(); 3636 // first draw the background and anchor to the top of the view 3637 canvas.save(); 3638 canvas.translate(mScrollX, mScrollY); 3639 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3640 - mScrollY, Region.Op.DIFFERENCE); 3641 canvas.drawPaint(mOverScrollBackground); 3642 canvas.restore(); 3643 // then draw the border 3644 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3645 // next clip the region for the content 3646 canvas.clipRect(0, top, right, bottom); 3647 } 3648 3649 @Override 3650 protected void onDraw(Canvas canvas) { 3651 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3652 if (mNativeClass == 0) { 3653 return; 3654 } 3655 3656 // if both mContentWidth and mContentHeight are 0, it means there is no 3657 // valid Picture passed to WebView yet. This can happen when WebView 3658 // just starts. Draw the background and return. 3659 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3660 canvas.drawColor(mBackgroundColor); 3661 return; 3662 } 3663 3664 int saveCount = canvas.save(); 3665 if (mInOverScrollMode && !getSettings() 3666 .getUseWebViewBackgroundForOverscrollBackground()) { 3667 drawOverScrollBackground(canvas); 3668 } 3669 if (mTitleBar != null) { 3670 canvas.translate(0, (int) mTitleBar.getHeight()); 3671 } 3672 drawContent(canvas); 3673 canvas.restoreToCount(saveCount); 3674 3675 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3676 invalidate(); 3677 } 3678 if (inEditingMode()) { 3679 mWebTextView.onDrawSubstitute(); 3680 } 3681 mWebViewCore.signalRepaintDone(); 3682 3683 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3684 invalidate(); 3685 } 3686 3687 // paint the highlight in the end 3688 if (!mTouchHighlightRegion.isEmpty()) { 3689 if (mTouchHightlightPaint == null) { 3690 mTouchHightlightPaint = new Paint(); 3691 mTouchHightlightPaint.setColor(mHightlightColor); 3692 mTouchHightlightPaint.setAntiAlias(true); 3693 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3694 TOUCH_HIGHLIGHT_ARC)); 3695 } 3696 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3697 mTouchHightlightPaint); 3698 } 3699 if (DEBUG_TOUCH_HIGHLIGHT) { 3700 if (getSettings().getNavDump()) { 3701 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3702 if (mTouchCrossHairColor == null) { 3703 mTouchCrossHairColor = new Paint(); 3704 mTouchCrossHairColor.setColor(Color.RED); 3705 } 3706 canvas.drawLine(mTouchHighlightX - mNavSlop, 3707 mTouchHighlightY - mNavSlop, mTouchHighlightX 3708 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3709 + 1, mTouchCrossHairColor); 3710 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3711 mTouchHighlightY - mNavSlop, mTouchHighlightX 3712 - mNavSlop, 3713 mTouchHighlightY + mNavSlop + 1, 3714 mTouchCrossHairColor); 3715 } 3716 } 3717 } 3718 } 3719 3720 private void removeTouchHighlight(boolean removePendingMessage) { 3721 if (removePendingMessage) { 3722 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3723 } 3724 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3725 } 3726 3727 @Override 3728 public void setLayoutParams(ViewGroup.LayoutParams params) { 3729 if (params.height == LayoutParams.WRAP_CONTENT) { 3730 mWrapContent = true; 3731 } 3732 super.setLayoutParams(params); 3733 } 3734 3735 @Override 3736 public boolean performLongClick() { 3737 // performLongClick() is the result of a delayed message. If we switch 3738 // to windows overview, the WebView will be temporarily removed from the 3739 // view system. In that case, do nothing. 3740 if (getParent() == null) return false; 3741 3742 // A multi-finger gesture can look like a long press; make sure we don't take 3743 // long press actions if we're scaling. 3744 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3745 if (detector != null && detector.isInProgress()) { 3746 return false; 3747 } 3748 3749 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3750 // Send the click so that the textfield is in focus 3751 centerKeyPressOnTextField(); 3752 rebuildWebTextView(); 3753 } else { 3754 clearTextEntry(); 3755 } 3756 if (inEditingMode()) { 3757 // Since we just called rebuildWebTextView, the layout is not set 3758 // properly. Update it so it can correctly find the word to select. 3759 mWebTextView.ensureLayout(); 3760 // Provide a touch down event to WebTextView, which will allow it 3761 // to store the location to use in performLongClick. 3762 AbsoluteLayout.LayoutParams params 3763 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3764 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3765 mLastTouchTime, MotionEvent.ACTION_DOWN, 3766 mLastTouchX - params.x + mScrollX, 3767 mLastTouchY - params.y + mScrollY, 0); 3768 mWebTextView.dispatchTouchEvent(fake); 3769 return mWebTextView.performLongClick(); 3770 } 3771 if (mSelectingText) return false; // long click does nothing on selection 3772 /* if long click brings up a context menu, the super function 3773 * returns true and we're done. Otherwise, nothing happened when 3774 * the user clicked. */ 3775 if (super.performLongClick()) { 3776 return true; 3777 } 3778 /* In the case where the application hasn't already handled the long 3779 * click action, look for a word under the click. If one is found, 3780 * animate the text selection into view. 3781 * FIXME: no animation code yet */ 3782 return selectText(); 3783 } 3784 3785 /** 3786 * Select the word at the last click point. 3787 * 3788 * @hide pending API council approval 3789 */ 3790 public boolean selectText() { 3791 int x = viewToContentX((int) mLastTouchX + mScrollX); 3792 int y = viewToContentY((int) mLastTouchY + mScrollY); 3793 if (!setUpSelect()) { 3794 return false; 3795 } 3796 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3797 nativeSetExtendSelection(); 3798 mDrawSelectionPointer = false; 3799 mSelectionStarted = true; 3800 mTouchMode = TOUCH_DRAG_MODE; 3801 return true; 3802 } 3803 selectionDone(); 3804 return false; 3805 } 3806 3807 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3808 3809 @Override 3810 protected void onConfigurationChanged(Configuration newConfig) { 3811 if (mSelectingText && mOrientation != newConfig.orientation) { 3812 selectionDone(); 3813 } 3814 mOrientation = newConfig.orientation; 3815 } 3816 3817 /** 3818 * Keep track of the Callback so we can end its ActionMode or remove its 3819 * titlebar. 3820 */ 3821 private SelectActionModeCallback mSelectCallback; 3822 3823 // These values are possible options for didUpdateWebTextViewDimensions. 3824 private static final int FULLY_ON_SCREEN = 0; 3825 private static final int INTERSECTS_SCREEN = 1; 3826 private static final int ANYWHERE = 2; 3827 3828 /** 3829 * Check to see if the focused textfield/textarea is still on screen. If it 3830 * is, update the the dimensions and location of WebTextView. Otherwise, 3831 * remove the WebTextView. Should be called when the zoom level changes. 3832 * @param intersection How to determine whether the textfield/textarea is 3833 * still on screen. 3834 * @return boolean True if the textfield/textarea is still on screen and the 3835 * dimensions/location of WebTextView have been updated. 3836 */ 3837 private boolean didUpdateWebTextViewDimensions(int intersection) { 3838 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3839 Rect vBox = contentToViewRect(contentBounds); 3840 Rect visibleRect = new Rect(); 3841 calcOurVisibleRect(visibleRect); 3842 // If the textfield is on screen, place the WebTextView in 3843 // its new place, accounting for our new scroll/zoom values, 3844 // and adjust its textsize. 3845 boolean onScreen; 3846 switch (intersection) { 3847 case FULLY_ON_SCREEN: 3848 onScreen = visibleRect.contains(vBox); 3849 break; 3850 case INTERSECTS_SCREEN: 3851 onScreen = Rect.intersects(visibleRect, vBox); 3852 break; 3853 case ANYWHERE: 3854 onScreen = true; 3855 break; 3856 default: 3857 throw new AssertionError( 3858 "invalid parameter passed to didUpdateWebTextViewDimensions"); 3859 } 3860 if (onScreen) { 3861 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3862 vBox.height()); 3863 mWebTextView.updateTextSize(); 3864 updateWebTextViewPadding(); 3865 return true; 3866 } else { 3867 // The textfield is now off screen. The user probably 3868 // was not zooming to see the textfield better. Remove 3869 // the WebTextView. If the user types a key, and the 3870 // textfield is still in focus, we will reconstruct 3871 // the WebTextView and scroll it back on screen. 3872 mWebTextView.remove(); 3873 return false; 3874 } 3875 } 3876 3877 void setBaseLayer(int layer, Rect invalRect) { 3878 if (mNativeClass == 0) 3879 return; 3880 if (invalRect == null) { 3881 Rect rect = new Rect(0, 0, mContentWidth, mContentHeight); 3882 nativeSetBaseLayer(layer, rect); 3883 } else { 3884 nativeSetBaseLayer(layer, invalRect); 3885 } 3886 } 3887 3888 private void onZoomAnimationStart() { 3889 // If it is in password mode, turn it off so it does not draw misplaced. 3890 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3891 mWebTextView.setInPassword(false); 3892 } 3893 } 3894 3895 private void onZoomAnimationEnd() { 3896 // adjust the edit text view if needed 3897 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 3898 && nativeFocusCandidateIsPassword()) { 3899 // If it is a password field, start drawing the WebTextView once 3900 // again. 3901 mWebTextView.setInPassword(true); 3902 } 3903 } 3904 3905 void onFixedLengthZoomAnimationStart() { 3906 WebViewCore.pauseUpdatePicture(getWebViewCore()); 3907 onZoomAnimationStart(); 3908 } 3909 3910 void onFixedLengthZoomAnimationEnd() { 3911 if (!mSelectingText) { 3912 WebViewCore.resumeUpdatePicture(mWebViewCore); 3913 } 3914 onZoomAnimationEnd(); 3915 } 3916 3917 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 3918 Paint.DITHER_FLAG | 3919 Paint.SUBPIXEL_TEXT_FLAG; 3920 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 3921 Paint.DITHER_FLAG; 3922 3923 private final DrawFilter mZoomFilter = 3924 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 3925 // If we need to trade better quality for speed, set mScrollFilter to null 3926 private final DrawFilter mScrollFilter = 3927 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 3928 3929 private void drawCoreAndCursorRing(Canvas canvas, int color, 3930 boolean drawCursorRing) { 3931 if (mDrawHistory) { 3932 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3933 canvas.drawPicture(mHistoryPicture); 3934 return; 3935 } 3936 if (mNativeClass == 0) return; 3937 3938 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 3939 boolean animateScroll = ((!mScroller.isFinished() 3940 || mVelocityTracker != null) 3941 && (mTouchMode != TOUCH_DRAG_MODE || 3942 mHeldMotionless != MOTIONLESS_TRUE)) 3943 || mDeferTouchMode == TOUCH_DRAG_MODE; 3944 if (mTouchMode == TOUCH_DRAG_MODE) { 3945 if (mHeldMotionless == MOTIONLESS_PENDING) { 3946 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3947 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3948 mHeldMotionless = MOTIONLESS_FALSE; 3949 } 3950 if (mHeldMotionless == MOTIONLESS_FALSE) { 3951 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3952 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3953 mHeldMotionless = MOTIONLESS_PENDING; 3954 } 3955 } 3956 if (animateZoom) { 3957 mZoomManager.animateZoom(canvas); 3958 } else { 3959 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3960 } 3961 3962 boolean UIAnimationsRunning = false; 3963 // Currently for each draw we compute the animation values; 3964 // We may in the future decide to do that independently. 3965 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3966 UIAnimationsRunning = true; 3967 // If we have unfinished (or unstarted) animations, 3968 // we ask for a repaint. 3969 invalidate(); 3970 } 3971 3972 // decide which adornments to draw 3973 int extras = DRAW_EXTRAS_NONE; 3974 if (mFindIsUp) { 3975 extras = DRAW_EXTRAS_FIND; 3976 } else if (mSelectingText) { 3977 extras = DRAW_EXTRAS_SELECTION; 3978 nativeSetSelectionPointer(mDrawSelectionPointer, 3979 mZoomManager.getInvScale(), 3980 mSelectX, mSelectY - getTitleHeight()); 3981 } else if (drawCursorRing) { 3982 extras = DRAW_EXTRAS_CURSOR_RING; 3983 } 3984 if (DebugFlags.WEB_VIEW) { 3985 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 3986 + " mSelectingText=" + mSelectingText 3987 + " nativePageShouldHandleShiftAndArrows()=" 3988 + nativePageShouldHandleShiftAndArrows() 3989 + " animateZoom=" + animateZoom 3990 + " extras=" + extras); 3991 } 3992 3993 if (canvas.isHardwareAccelerated()) { 3994 try { 3995 if (canvas.acquireContext()) { 3996 Rect rect = new Rect(mGLRectViewport.left, 3997 mGLRectViewport.top, 3998 mGLRectViewport.right, 3999 mGLRectViewport.bottom 4000 - getVisibleTitleHeight()); 4001 if (nativeDrawGL(rect, getScale(), extras)) { 4002 invalidate(); 4003 } 4004 } 4005 } finally { 4006 canvas.releaseContext(); 4007 } 4008 } else { 4009 DrawFilter df = null; 4010 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4011 df = mZoomFilter; 4012 } else if (animateScroll) { 4013 df = mScrollFilter; 4014 } 4015 canvas.setDrawFilter(df); 4016 int content = nativeDraw(canvas, color, extras, true); 4017 canvas.setDrawFilter(null); 4018 if (content != 0) { 4019 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4020 } 4021 } 4022 4023 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4024 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4025 mTouchMode = TOUCH_SHORTPRESS_MODE; 4026 } 4027 } 4028 if (mFocusSizeChanged) { 4029 mFocusSizeChanged = false; 4030 // If we are zooming, this will get handled above, when the zoom 4031 // finishes. We also do not need to do this unless the WebTextView 4032 // is showing. 4033 if (!animateZoom && inEditingMode()) { 4034 didUpdateWebTextViewDimensions(ANYWHERE); 4035 } 4036 } 4037 } 4038 4039 // draw history 4040 private boolean mDrawHistory = false; 4041 private Picture mHistoryPicture = null; 4042 private int mHistoryWidth = 0; 4043 private int mHistoryHeight = 0; 4044 4045 // Only check the flag, can be called from WebCore thread 4046 boolean drawHistory() { 4047 return mDrawHistory; 4048 } 4049 4050 int getHistoryPictureWidth() { 4051 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4052 } 4053 4054 // Should only be called in UI thread 4055 void switchOutDrawHistory() { 4056 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4057 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4058 mDrawHistory = false; 4059 mHistoryPicture = null; 4060 invalidate(); 4061 int oldScrollX = mScrollX; 4062 int oldScrollY = mScrollY; 4063 mScrollX = pinLocX(mScrollX); 4064 mScrollY = pinLocY(mScrollY); 4065 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4066 mUserScroll = false; 4067 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 4068 oldScrollY); 4069 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4070 } else { 4071 sendOurVisibleRect(); 4072 } 4073 } 4074 } 4075 4076 WebViewCore.CursorData cursorData() { 4077 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4078 result.mMoveGeneration = nativeMoveGeneration(); 4079 result.mFrame = nativeCursorFramePointer(); 4080 Point position = nativeCursorPosition(); 4081 result.mX = position.x; 4082 result.mY = position.y; 4083 return result; 4084 } 4085 4086 /** 4087 * Delete text from start to end in the focused textfield. If there is no 4088 * focus, or if start == end, silently fail. If start and end are out of 4089 * order, swap them. 4090 * @param start Beginning of selection to delete. 4091 * @param end End of selection to delete. 4092 */ 4093 /* package */ void deleteSelection(int start, int end) { 4094 mTextGeneration++; 4095 WebViewCore.TextSelectionData data 4096 = new WebViewCore.TextSelectionData(start, end); 4097 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4098 data); 4099 } 4100 4101 /** 4102 * Set the selection to (start, end) in the focused textfield. If start and 4103 * end are out of order, swap them. 4104 * @param start Beginning of selection. 4105 * @param end End of selection. 4106 */ 4107 /* package */ void setSelection(int start, int end) { 4108 if (mWebViewCore != null) { 4109 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4110 } 4111 } 4112 4113 @Override 4114 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4115 InputConnection connection = super.onCreateInputConnection(outAttrs); 4116 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4117 return connection; 4118 } 4119 4120 /** 4121 * Called in response to a message from webkit telling us that the soft 4122 * keyboard should be launched. 4123 */ 4124 private void displaySoftKeyboard(boolean isTextView) { 4125 InputMethodManager imm = (InputMethodManager) 4126 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4127 4128 // bring it back to the default level scale so that user can enter text 4129 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4130 if (zoom) { 4131 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4132 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4133 } 4134 if (isTextView) { 4135 rebuildWebTextView(); 4136 if (inEditingMode()) { 4137 imm.showSoftInput(mWebTextView, 0); 4138 if (zoom) { 4139 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4140 } 4141 return; 4142 } 4143 } 4144 // Used by plugins and contentEditable. 4145 // Also used if the navigation cache is out of date, and 4146 // does not recognize that a textfield is in focus. In that 4147 // case, use WebView as the targeted view. 4148 // see http://b/issue?id=2457459 4149 imm.showSoftInput(this, 0); 4150 } 4151 4152 // Called by WebKit to instruct the UI to hide the keyboard 4153 private void hideSoftKeyboard() { 4154 InputMethodManager imm = InputMethodManager.peekInstance(); 4155 if (imm != null && (imm.isActive(this) 4156 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4157 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4158 } 4159 } 4160 4161 /* 4162 * This method checks the current focus and cursor and potentially rebuilds 4163 * mWebTextView to have the appropriate properties, such as password, 4164 * multiline, and what text it contains. It also removes it if necessary. 4165 */ 4166 /* package */ void rebuildWebTextView() { 4167 // If the WebView does not have focus, do nothing until it gains focus. 4168 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4169 return; 4170 } 4171 boolean alreadyThere = inEditingMode(); 4172 // inEditingMode can only return true if mWebTextView is non-null, 4173 // so we can safely call remove() if (alreadyThere) 4174 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4175 if (alreadyThere) { 4176 mWebTextView.remove(); 4177 } 4178 return; 4179 } 4180 // At this point, we know we have found an input field, so go ahead 4181 // and create the WebTextView if necessary. 4182 if (mWebTextView == null) { 4183 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4184 // Initialize our generation number. 4185 mTextGeneration = 0; 4186 } 4187 mWebTextView.updateTextSize(); 4188 Rect visibleRect = new Rect(); 4189 calcOurContentVisibleRect(visibleRect); 4190 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4191 // should be in content coordinates. 4192 Rect bounds = nativeFocusCandidateNodeBounds(); 4193 Rect vBox = contentToViewRect(bounds); 4194 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4195 if (!Rect.intersects(bounds, visibleRect)) { 4196 mWebTextView.bringIntoView(); 4197 } 4198 String text = nativeFocusCandidateText(); 4199 int nodePointer = nativeFocusCandidatePointer(); 4200 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4201 // It is possible that we have the same textfield, but it has moved, 4202 // i.e. In the case of opening/closing the screen. 4203 // In that case, we need to set the dimensions, but not the other 4204 // aspects. 4205 // If the text has been changed by webkit, update it. However, if 4206 // there has been more UI text input, ignore it. We will receive 4207 // another update when that text is recognized. 4208 if (text != null && !text.equals(mWebTextView.getText().toString()) 4209 && nativeTextGeneration() == mTextGeneration) { 4210 mWebTextView.setTextAndKeepSelection(text); 4211 } 4212 } else { 4213 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4214 Gravity.RIGHT : Gravity.NO_GRAVITY); 4215 // This needs to be called before setType, which may call 4216 // requestFormData, and it needs to have the correct nodePointer. 4217 mWebTextView.setNodePointer(nodePointer); 4218 mWebTextView.setType(nativeFocusCandidateType()); 4219 updateWebTextViewPadding(); 4220 if (null == text) { 4221 if (DebugFlags.WEB_VIEW) { 4222 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4223 } 4224 text = ""; 4225 } 4226 mWebTextView.setTextAndKeepSelection(text); 4227 InputMethodManager imm = InputMethodManager.peekInstance(); 4228 if (imm != null && imm.isActive(mWebTextView)) { 4229 imm.restartInput(mWebTextView); 4230 } 4231 } 4232 if (isFocused()) { 4233 mWebTextView.requestFocus(); 4234 } 4235 } 4236 4237 /** 4238 * Update the padding of mWebTextView based on the native textfield/textarea 4239 */ 4240 void updateWebTextViewPadding() { 4241 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4242 if (paddingRect != null) { 4243 // Use contentToViewDimension since these are the dimensions of 4244 // the padding. 4245 mWebTextView.setPadding( 4246 contentToViewDimension(paddingRect.left), 4247 contentToViewDimension(paddingRect.top), 4248 contentToViewDimension(paddingRect.right), 4249 contentToViewDimension(paddingRect.bottom)); 4250 } 4251 } 4252 4253 /** 4254 * Tell webkit to put the cursor on screen. 4255 */ 4256 /* package */ void revealSelection() { 4257 if (mWebViewCore != null) { 4258 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4259 } 4260 } 4261 4262 /** 4263 * Called by WebTextView to find saved form data associated with the 4264 * textfield 4265 * @param name Name of the textfield. 4266 * @param nodePointer Pointer to the node of the textfield, so it can be 4267 * compared to the currently focused textfield when the data is 4268 * retrieved. 4269 * @param autoFillable true if WebKit has determined this field is part of 4270 * a form that can be auto filled. 4271 */ 4272 /* package */ void requestFormData(String name, int nodePointer, boolean autoFillable) { 4273 if (mWebViewCore.getSettings().getSaveFormData()) { 4274 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4275 update.arg1 = nodePointer; 4276 RequestFormData updater = new RequestFormData(name, getUrl(), 4277 update, autoFillable); 4278 Thread t = new Thread(updater); 4279 t.start(); 4280 } 4281 } 4282 4283 /** 4284 * Pass a message to find out the <label> associated with the <input> 4285 * identified by nodePointer 4286 * @param framePointer Pointer to the frame containing the <input> node 4287 * @param nodePointer Pointer to the node for which a <label> is desired. 4288 */ 4289 /* package */ void requestLabel(int framePointer, int nodePointer) { 4290 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4291 nodePointer); 4292 } 4293 4294 /* 4295 * This class requests an Adapter for the WebTextView which shows past 4296 * entries stored in the database. It is a Runnable so that it can be done 4297 * in its own thread, without slowing down the UI. 4298 */ 4299 private class RequestFormData implements Runnable { 4300 private String mName; 4301 private String mUrl; 4302 private Message mUpdateMessage; 4303 private boolean mAutoFillable; 4304 4305 public RequestFormData(String name, String url, Message msg, boolean autoFillable) { 4306 mName = name; 4307 mUrl = url; 4308 mUpdateMessage = msg; 4309 mAutoFillable = autoFillable; 4310 } 4311 4312 public void run() { 4313 ArrayList<String> pastEntries = new ArrayList(); 4314 4315 if (mAutoFillable) { 4316 // Note that code inside the adapter click handler in WebTextView depends 4317 // on the AutoFill item being at the top of the drop down list. If you change 4318 // the order, make sure to do it there too! 4319 WebSettings settings = getSettings(); 4320 if (settings != null && settings.getAutoFillProfile() != null) { 4321 pastEntries.add(getResources().getText( 4322 com.android.internal.R.string.autofill_this_form).toString() + 4323 " " + 4324 mAutoFillData.getPreviewString()); 4325 mWebTextView.setAutoFillProfileIsSet(true); 4326 } else { 4327 // There is no autofill profile set up yet, so add an option that 4328 // will invite the user to set their profile up. 4329 pastEntries.add(getResources().getText( 4330 com.android.internal.R.string.setup_autofill).toString()); 4331 mWebTextView.setAutoFillProfileIsSet(false); 4332 } 4333 } 4334 4335 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4336 4337 if (pastEntries.size() > 0) { 4338 AutoCompleteAdapter adapter = new 4339 AutoCompleteAdapter(mContext, pastEntries); 4340 mUpdateMessage.obj = adapter; 4341 mUpdateMessage.sendToTarget(); 4342 } 4343 } 4344 } 4345 4346 /** 4347 * Dump the display tree to "/sdcard/displayTree.txt" 4348 * 4349 * @hide debug only 4350 */ 4351 public void dumpDisplayTree() { 4352 nativeDumpDisplayTree(getUrl()); 4353 } 4354 4355 /** 4356 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4357 * "/sdcard/domTree.txt" 4358 * 4359 * @hide debug only 4360 */ 4361 public void dumpDomTree(boolean toFile) { 4362 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4363 } 4364 4365 /** 4366 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4367 * to "/sdcard/renderTree.txt" 4368 * 4369 * @hide debug only 4370 */ 4371 public void dumpRenderTree(boolean toFile) { 4372 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4373 } 4374 4375 /** 4376 * Called by DRT on UI thread, need to proxy to WebCore thread. 4377 * 4378 * @hide debug only 4379 */ 4380 public void useMockDeviceOrientation() { 4381 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4382 } 4383 4384 /** 4385 * Called by DRT on WebCore thread. 4386 * 4387 * @hide debug only 4388 */ 4389 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4390 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4391 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4392 canProvideGamma, gamma); 4393 } 4394 4395 /** 4396 * Dump the V8 counters to standard output. 4397 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4398 * true. Otherwise, this will do nothing. 4399 * 4400 * @hide debug only 4401 */ 4402 public void dumpV8Counters() { 4403 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4404 } 4405 4406 // This is used to determine long press with the center key. Does not 4407 // affect long press with the trackball/touch. 4408 private boolean mGotCenterDown = false; 4409 4410 @Override 4411 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4412 // send complex characters to webkit for use by JS and plugins 4413 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4414 // pass the key to DOM 4415 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4416 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4417 // return true as DOM handles the key 4418 return true; 4419 } 4420 return false; 4421 } 4422 4423 @Override 4424 public boolean onKeyDown(int keyCode, KeyEvent event) { 4425 if (DebugFlags.WEB_VIEW) { 4426 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4427 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4428 } 4429 4430 if (mNativeClass == 0) { 4431 return false; 4432 } 4433 4434 // do this hack up front, so it always works, regardless of touch-mode 4435 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4436 mAutoRedraw = !mAutoRedraw; 4437 if (mAutoRedraw) { 4438 invalidate(); 4439 } 4440 return true; 4441 } 4442 4443 // Bubble up the key event if 4444 // 1. it is a system key; or 4445 // 2. the host application wants to handle it; 4446 // 3. the accessibility injector is present and wants to handle it; 4447 if (event.isSystem() 4448 || mCallbackProxy.uiOverrideKeyEvent(event) 4449 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4450 return false; 4451 } 4452 4453 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4454 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4455 if (!pageShouldHandleShiftAndArrows() && !nativeCursorWantsKeyEvents() 4456 && !mSelectingText) { 4457 setUpSelect(); 4458 } 4459 } 4460 4461 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4462 pageUp(false); 4463 return true; 4464 } 4465 4466 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4467 pageDown(false); 4468 return true; 4469 } 4470 4471 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4472 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4473 switchOutDrawHistory(); 4474 if (pageShouldHandleShiftAndArrows()) { 4475 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4476 return true; 4477 } 4478 if (mSelectingText) { 4479 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4480 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4481 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4482 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4483 int multiplier = event.getRepeatCount() + 1; 4484 moveSelection(xRate * multiplier, yRate * multiplier); 4485 return true; 4486 } 4487 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4488 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4489 return true; 4490 } 4491 // Bubble up the key event as WebView doesn't handle it 4492 return false; 4493 } 4494 4495 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4496 switchOutDrawHistory(); 4497 if (event.getRepeatCount() == 0) { 4498 if (mSelectingText) { 4499 return true; // discard press if copy in progress 4500 } 4501 mGotCenterDown = true; 4502 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4503 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4504 // Already checked mNativeClass, so we do not need to check it 4505 // again. 4506 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4507 return true; 4508 } 4509 // Bubble up the key event as WebView doesn't handle it 4510 return false; 4511 } 4512 4513 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 4514 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 4515 // turn off copy select if a shift-key combo is pressed 4516 selectionDone(); 4517 } 4518 4519 if (getSettings().getNavDump()) { 4520 switch (keyCode) { 4521 case KeyEvent.KEYCODE_4: 4522 dumpDisplayTree(); 4523 break; 4524 case KeyEvent.KEYCODE_5: 4525 case KeyEvent.KEYCODE_6: 4526 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4527 break; 4528 case KeyEvent.KEYCODE_7: 4529 case KeyEvent.KEYCODE_8: 4530 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4531 break; 4532 case KeyEvent.KEYCODE_9: 4533 nativeInstrumentReport(); 4534 return true; 4535 } 4536 } 4537 4538 if (nativeCursorIsTextInput()) { 4539 // This message will put the node in focus, for the DOM's notion 4540 // of focus, and make the focuscontroller active 4541 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 4542 nativeCursorNodePointer()); 4543 // This will bring up the WebTextView and put it in focus, for 4544 // our view system's notion of focus 4545 rebuildWebTextView(); 4546 // Now we need to pass the event to it 4547 if (inEditingMode()) { 4548 mWebTextView.setDefaultSelection(); 4549 return mWebTextView.dispatchKeyEvent(event); 4550 } 4551 } else if (nativeHasFocusNode()) { 4552 // In this case, the cursor is not on a text input, but the focus 4553 // might be. Check it, and if so, hand over to the WebTextView. 4554 rebuildWebTextView(); 4555 if (inEditingMode()) { 4556 mWebTextView.setDefaultSelection(); 4557 return mWebTextView.dispatchKeyEvent(event); 4558 } 4559 } 4560 4561 // TODO: should we pass all the keys to DOM or check the meta tag 4562 if (nativeCursorWantsKeyEvents() || true) { 4563 // pass the key to DOM 4564 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4565 // return true as DOM handles the key 4566 return true; 4567 } 4568 4569 // Bubble up the key event as WebView doesn't handle it 4570 return false; 4571 } 4572 4573 @Override 4574 public boolean onKeyUp(int keyCode, KeyEvent event) { 4575 if (DebugFlags.WEB_VIEW) { 4576 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4577 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4578 } 4579 4580 if (mNativeClass == 0) { 4581 return false; 4582 } 4583 4584 // special CALL handling when cursor node's href is "tel:XXX" 4585 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4586 String text = nativeCursorText(); 4587 if (!nativeCursorIsTextInput() && text != null 4588 && text.startsWith(SCHEME_TEL)) { 4589 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4590 getContext().startActivity(intent); 4591 return true; 4592 } 4593 } 4594 4595 // Bubble up the key event if 4596 // 1. it is a system key; or 4597 // 2. the host application wants to handle it; 4598 // 3. the accessibility injector is present and wants to handle it; 4599 if (event.isSystem() 4600 || mCallbackProxy.uiOverrideKeyEvent(event) 4601 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4602 return false; 4603 } 4604 4605 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4606 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4607 if (!pageShouldHandleShiftAndArrows() && copySelection()) { 4608 selectionDone(); 4609 return true; 4610 } 4611 } 4612 4613 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4614 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4615 if (pageShouldHandleShiftAndArrows()) { 4616 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4617 return true; 4618 } 4619 // always handle the navigation keys in the UI thread 4620 // Bubble up the key event as WebView doesn't handle it 4621 return false; 4622 } 4623 4624 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4625 // remove the long press message first 4626 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4627 mGotCenterDown = false; 4628 4629 if (mSelectingText) { 4630 if (mExtendSelection) { 4631 copySelection(); 4632 selectionDone(); 4633 } else { 4634 mExtendSelection = true; 4635 nativeSetExtendSelection(); 4636 invalidate(); // draw the i-beam instead of the arrow 4637 } 4638 return true; // discard press if copy in progress 4639 } 4640 4641 // perform the single click 4642 Rect visibleRect = sendOurVisibleRect(); 4643 // Note that sendOurVisibleRect calls viewToContent, so the 4644 // coordinates should be in content coordinates. 4645 if (!nativeCursorIntersects(visibleRect)) { 4646 return false; 4647 } 4648 WebViewCore.CursorData data = cursorData(); 4649 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4650 playSoundEffect(SoundEffectConstants.CLICK); 4651 if (nativeCursorIsTextInput()) { 4652 rebuildWebTextView(); 4653 centerKeyPressOnTextField(); 4654 if (inEditingMode()) { 4655 mWebTextView.setDefaultSelection(); 4656 } 4657 return true; 4658 } 4659 clearTextEntry(); 4660 nativeShowCursorTimed(); 4661 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4662 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4663 nativeCursorNodePointer()); 4664 } 4665 return true; 4666 } 4667 4668 // TODO: should we pass all the keys to DOM or check the meta tag 4669 if (nativeCursorWantsKeyEvents() || true) { 4670 // pass the key to DOM 4671 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4672 // return true as DOM handles the key 4673 return true; 4674 } 4675 4676 // Bubble up the key event as WebView doesn't handle it 4677 return false; 4678 } 4679 4680 /* 4681 * Enter selecting text mode. Returns true if the WebView is now in 4682 * selecting text mode (including if it was already in that mode, and this 4683 * method did nothing). 4684 */ 4685 private boolean setUpSelect() { 4686 if (0 == mNativeClass) return false; // client isn't initialized 4687 if (inFullScreenMode()) return false; 4688 if (mSelectingText) return true; 4689 mExtendSelection = false; 4690 mSelectingText = mDrawSelectionPointer = true; 4691 // don't let the picture change during text selection 4692 WebViewCore.pauseUpdatePicture(mWebViewCore); 4693 nativeResetSelection(); 4694 if (nativeHasCursorNode()) { 4695 Rect rect = nativeCursorNodeBounds(); 4696 mSelectX = contentToViewX(rect.left); 4697 mSelectY = contentToViewY(rect.top); 4698 } else if (mLastTouchY > getVisibleTitleHeight()) { 4699 mSelectX = mScrollX + (int) mLastTouchX; 4700 mSelectY = mScrollY + (int) mLastTouchY; 4701 } else { 4702 mSelectX = mScrollX + getViewWidth() / 2; 4703 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4704 } 4705 nativeHideCursor(); 4706 mSelectCallback = new SelectActionModeCallback(); 4707 mSelectCallback.setWebView(this); 4708 if (startActionMode(mSelectCallback) == null) { 4709 // There is no ActionMode, so do not allow the user to modify a 4710 // selection. 4711 selectionDone(); 4712 return false; 4713 } 4714 return true; 4715 } 4716 4717 /** 4718 * Use this method to put the WebView into text selection mode. 4719 * Do not rely on this functionality; it will be deprecated in the future. 4720 */ 4721 public void emulateShiftHeld() { 4722 setUpSelect(); 4723 } 4724 4725 /** 4726 * Select all of the text in this WebView. 4727 */ 4728 void selectAll() { 4729 if (0 == mNativeClass) return; // client isn't initialized 4730 if (inFullScreenMode()) return; 4731 if (!mSelectingText && !setUpSelect()) { 4732 return; 4733 } 4734 nativeSelectAll(); 4735 mDrawSelectionPointer = false; 4736 mExtendSelection = true; 4737 invalidate(); 4738 } 4739 4740 /** 4741 * Called when the selection has been removed. 4742 */ 4743 void selectionDone() { 4744 if (mSelectingText) { 4745 mSelectingText = false; 4746 // finish is idempotent, so this is fine even if selectionDone was 4747 // called by mSelectCallback.onDestroyActionMode 4748 mSelectCallback.finish(); 4749 mSelectCallback = null; 4750 WebViewCore.resumePriority(); 4751 WebViewCore.resumeUpdatePicture(mWebViewCore); 4752 invalidate(); // redraw without selection 4753 mAutoScrollX = 0; 4754 mAutoScrollY = 0; 4755 mSentAutoScrollMessage = false; 4756 } 4757 } 4758 4759 /** 4760 * Copy the selection to the clipboard 4761 */ 4762 boolean copySelection() { 4763 boolean copiedSomething = false; 4764 String selection = getSelection(); 4765 if (selection != "") { 4766 if (DebugFlags.WEB_VIEW) { 4767 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4768 } 4769 Toast.makeText(mContext 4770 , com.android.internal.R.string.text_copied 4771 , Toast.LENGTH_SHORT).show(); 4772 copiedSomething = true; 4773 ClipboardManager cm = (ClipboardManager)getContext() 4774 .getSystemService(Context.CLIPBOARD_SERVICE); 4775 cm.setText(selection); 4776 } 4777 invalidate(); // remove selection region and pointer 4778 return copiedSomething; 4779 } 4780 4781 /** 4782 * Returns the currently highlighted text as a string. 4783 */ 4784 String getSelection() { 4785 if (mNativeClass == 0) return ""; 4786 return nativeGetSelection(); 4787 } 4788 4789 @Override 4790 protected void onAttachedToWindow() { 4791 super.onAttachedToWindow(); 4792 if (hasWindowFocus()) setActive(true); 4793 final ViewTreeObserver treeObserver = getViewTreeObserver(); 4794 if (treeObserver != null) { 4795 if (mGlobalLayoutListener == null) { 4796 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 4797 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 4798 } 4799 if (mScrollChangedListener == null) { 4800 mScrollChangedListener = new InnerScrollChangedListener(); 4801 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 4802 } 4803 } 4804 } 4805 4806 @Override 4807 protected void onDetachedFromWindow() { 4808 clearHelpers(); 4809 mZoomManager.dismissZoomPicker(); 4810 if (hasWindowFocus()) setActive(false); 4811 4812 final ViewTreeObserver treeObserver = getViewTreeObserver(); 4813 if (treeObserver != null) { 4814 if (mGlobalLayoutListener != null) { 4815 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 4816 mGlobalLayoutListener = null; 4817 } 4818 if (mScrollChangedListener != null) { 4819 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 4820 mScrollChangedListener = null; 4821 } 4822 } 4823 4824 super.onDetachedFromWindow(); 4825 } 4826 4827 @Override 4828 protected void onVisibilityChanged(View changedView, int visibility) { 4829 super.onVisibilityChanged(changedView, visibility); 4830 // The zoomManager may be null if the webview is created from XML that 4831 // specifies the view's visibility param as not visible (see http://b/2794841) 4832 if (visibility != View.VISIBLE && mZoomManager != null) { 4833 mZoomManager.dismissZoomPicker(); 4834 } 4835 } 4836 4837 /** 4838 * @deprecated WebView no longer needs to implement 4839 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4840 */ 4841 @Deprecated 4842 public void onChildViewAdded(View parent, View child) {} 4843 4844 /** 4845 * @deprecated WebView no longer needs to implement 4846 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4847 */ 4848 @Deprecated 4849 public void onChildViewRemoved(View p, View child) {} 4850 4851 /** 4852 * @deprecated WebView should not have implemented 4853 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4854 * does nothing now. 4855 */ 4856 @Deprecated 4857 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4858 } 4859 4860 private void setActive(boolean active) { 4861 if (active) { 4862 if (hasFocus()) { 4863 // If our window regained focus, and we have focus, then begin 4864 // drawing the cursor ring 4865 mDrawCursorRing = true; 4866 setFocusControllerActive(true); 4867 if (mNativeClass != 0) { 4868 nativeRecordButtons(true, false, true); 4869 } 4870 } else { 4871 if (!inEditingMode()) { 4872 // If our window gained focus, but we do not have it, do not 4873 // draw the cursor ring. 4874 mDrawCursorRing = false; 4875 setFocusControllerActive(false); 4876 } 4877 // We do not call nativeRecordButtons here because we assume 4878 // that when we lost focus, or window focus, it got called with 4879 // false for the first parameter 4880 } 4881 } else { 4882 if (!mZoomManager.isZoomPickerVisible()) { 4883 /* 4884 * The external zoom controls come in their own window, so our 4885 * window loses focus. Our policy is to not draw the cursor ring 4886 * if our window is not focused, but this is an exception since 4887 * the user can still navigate the web page with the zoom 4888 * controls showing. 4889 */ 4890 mDrawCursorRing = false; 4891 } 4892 mGotKeyDown = false; 4893 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4894 mTouchMode = TOUCH_DONE_MODE; 4895 if (mNativeClass != 0) { 4896 nativeRecordButtons(false, false, true); 4897 } 4898 setFocusControllerActive(false); 4899 } 4900 invalidate(); 4901 } 4902 4903 // To avoid drawing the cursor ring, and remove the TextView when our window 4904 // loses focus. 4905 @Override 4906 public void onWindowFocusChanged(boolean hasWindowFocus) { 4907 setActive(hasWindowFocus); 4908 if (hasWindowFocus) { 4909 JWebCoreJavaBridge.setActiveWebView(this); 4910 } else { 4911 JWebCoreJavaBridge.removeActiveWebView(this); 4912 } 4913 super.onWindowFocusChanged(hasWindowFocus); 4914 } 4915 4916 /* 4917 * Pass a message to WebCore Thread, telling the WebCore::Page's 4918 * FocusController to be "inactive" so that it will 4919 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4920 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4921 */ 4922 /* package */ void setFocusControllerActive(boolean active) { 4923 if (mWebViewCore == null) return; 4924 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 4925 // Need to send this message after the document regains focus. 4926 if (active && mListBoxMessage != null) { 4927 mWebViewCore.sendMessage(mListBoxMessage); 4928 mListBoxMessage = null; 4929 } 4930 } 4931 4932 @Override 4933 protected void onFocusChanged(boolean focused, int direction, 4934 Rect previouslyFocusedRect) { 4935 if (DebugFlags.WEB_VIEW) { 4936 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4937 } 4938 if (focused) { 4939 // When we regain focus, if we have window focus, resume drawing 4940 // the cursor ring 4941 if (hasWindowFocus()) { 4942 mDrawCursorRing = true; 4943 if (mNativeClass != 0) { 4944 nativeRecordButtons(true, false, true); 4945 } 4946 setFocusControllerActive(true); 4947 //} else { 4948 // The WebView has gained focus while we do not have 4949 // windowfocus. When our window lost focus, we should have 4950 // called nativeRecordButtons(false...) 4951 } 4952 } else { 4953 // When we lost focus, unless focus went to the TextView (which is 4954 // true if we are in editing mode), stop drawing the cursor ring. 4955 if (!inEditingMode()) { 4956 mDrawCursorRing = false; 4957 if (mNativeClass != 0) { 4958 nativeRecordButtons(false, false, true); 4959 } 4960 setFocusControllerActive(false); 4961 } 4962 mGotKeyDown = false; 4963 } 4964 4965 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4966 } 4967 4968 void setGLRectViewport() { 4969 // Use the getGlobalVisibleRect() to get the intersection among the parents 4970 Rect webViewRect = new Rect(); 4971 boolean visible = getGlobalVisibleRect(webViewRect); 4972 4973 // Then need to invert the Y axis, just for GL 4974 View rootView = getRootView(); 4975 int rootViewHeight = rootView.getHeight(); 4976 int savedWebViewBottom = webViewRect.bottom; 4977 webViewRect.bottom = rootViewHeight - webViewRect.top; 4978 webViewRect.top = rootViewHeight - savedWebViewBottom; 4979 4980 // Store the viewport 4981 mGLRectViewport = webViewRect; 4982 } 4983 4984 /** 4985 * @hide 4986 */ 4987 @Override 4988 protected boolean setFrame(int left, int top, int right, int bottom) { 4989 boolean changed = super.setFrame(left, top, right, bottom); 4990 if (!changed && mHeightCanMeasure) { 4991 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4992 // in WebViewCore after we get the first layout. We do call 4993 // requestLayout() when we get contentSizeChanged(). But the View 4994 // system won't call onSizeChanged if the dimension is not changed. 4995 // In this case, we need to call sendViewSizeZoom() explicitly to 4996 // notify the WebKit about the new dimensions. 4997 sendViewSizeZoom(false); 4998 } 4999 setGLRectViewport(); 5000 return changed; 5001 } 5002 5003 @Override 5004 protected void onSizeChanged(int w, int h, int ow, int oh) { 5005 super.onSizeChanged(w, h, ow, oh); 5006 5007 // adjust the max viewport width depending on the view dimensions. This 5008 // is to ensure the scaling is not going insane. So do not shrink it if 5009 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5010 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5011 if (newMaxViewportWidth > sMaxViewportWidth) { 5012 sMaxViewportWidth = newMaxViewportWidth; 5013 } 5014 5015 mZoomManager.onSizeChanged(w, h, ow, oh); 5016 } 5017 5018 @Override 5019 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5020 super.onScrollChanged(l, t, oldl, oldt); 5021 if (!mInOverScrollMode) { 5022 sendOurVisibleRect(); 5023 // update WebKit if visible title bar height changed. The logic is same 5024 // as getVisibleTitleHeight. 5025 int titleHeight = getTitleHeight(); 5026 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5027 sendViewSizeZoom(false); 5028 } 5029 } 5030 } 5031 5032 @Override 5033 public boolean dispatchKeyEvent(KeyEvent event) { 5034 boolean dispatch = true; 5035 5036 // Textfields, plugins, and contentEditable nodes need to receive the 5037 // shift up key even if another key was released while the shift key 5038 // was held down. 5039 if (!inEditingMode() && (mNativeClass == 0 5040 || !nativePageShouldHandleShiftAndArrows())) { 5041 if (event.getAction() == KeyEvent.ACTION_DOWN) { 5042 mGotKeyDown = true; 5043 } else { 5044 if (!mGotKeyDown) { 5045 /* 5046 * We got a key up for which we were not the recipient of 5047 * the original key down. Don't give it to the view. 5048 */ 5049 dispatch = false; 5050 } 5051 mGotKeyDown = false; 5052 } 5053 } 5054 5055 if (dispatch) { 5056 return super.dispatchKeyEvent(event); 5057 } else { 5058 // We didn't dispatch, so let something else handle the key 5059 return false; 5060 } 5061 } 5062 5063 // Here are the snap align logic: 5064 // 1. If it starts nearly horizontally or vertically, snap align; 5065 // 2. If there is a dramitic direction change, let it go; 5066 // 3. If there is a same direction back and forth, lock it. 5067 5068 // adjustable parameters 5069 private int mMinLockSnapReverseDistance; 5070 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5071 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5072 5073 private boolean hitFocusedPlugin(int contentX, int contentY) { 5074 if (DebugFlags.WEB_VIEW) { 5075 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5076 Rect r = nativeFocusNodeBounds(); 5077 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5078 + ", " + r.right + ", " + r.bottom + ")"); 5079 } 5080 return nativeFocusIsPlugin() 5081 && nativeFocusNodeBounds().contains(contentX, contentY); 5082 } 5083 5084 private boolean shouldForwardTouchEvent() { 5085 return mFullScreenHolder != null || (mForwardTouchEvents 5086 && !mSelectingText 5087 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5088 } 5089 5090 private boolean inFullScreenMode() { 5091 return mFullScreenHolder != null; 5092 } 5093 5094 private void dismissFullScreenMode() { 5095 if (inFullScreenMode()) { 5096 mFullScreenHolder.dismiss(); 5097 mFullScreenHolder = null; 5098 } 5099 } 5100 5101 void onPinchToZoomAnimationStart() { 5102 // cancel the single touch handling 5103 cancelTouch(); 5104 onZoomAnimationStart(); 5105 } 5106 5107 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5108 onZoomAnimationEnd(); 5109 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5110 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5111 // as it may trigger the unwanted fling. 5112 mTouchMode = TOUCH_PINCH_DRAG; 5113 mConfirmMove = true; 5114 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5115 } 5116 5117 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5118 // layer is found. 5119 private void startScrollingLayer(float x, float y) { 5120 int contentX = viewToContentX((int) x + mScrollX); 5121 int contentY = viewToContentY((int) y + mScrollY); 5122 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5123 mScrollingLayerRect); 5124 if (mScrollingLayer != 0) { 5125 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5126 } 5127 } 5128 5129 // 1/(density * density) used to compute the distance between points. 5130 // Computed in init(). 5131 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5132 5133 // The distance between two points reported in onTouchEvent scaled by the 5134 // density of the screen. 5135 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5136 5137 @Override 5138 public boolean onTouchEvent(MotionEvent ev) { 5139 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5140 return false; 5141 } 5142 5143 if (DebugFlags.WEB_VIEW) { 5144 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5145 + " mTouchMode=" + mTouchMode 5146 + " numPointers=" + ev.getPointerCount()); 5147 } 5148 5149 int action = ev.getAction(); 5150 float x = ev.getX(); 5151 float y = ev.getY(); 5152 long eventTime = ev.getEventTime(); 5153 5154 // mDeferMultitouch is a hack for layout tests, where it is used to 5155 // force passing multi-touch events to webkit. 5156 // FIXME: always pass multi-touch events to webkit and remove everything 5157 // related to mDeferMultitouch. 5158 if (ev.getPointerCount() > 1 && 5159 (mDeferMultitouch || mZoomManager.isZoomScaleFixed())) { 5160 if (DebugFlags.WEB_VIEW) { 5161 Log.v(LOGTAG, "passing " + ev.getPointerCount() + " points to webkit"); 5162 } 5163 passMultiTouchToWebKit(ev); 5164 return true; 5165 } 5166 5167 final ScaleGestureDetector detector = 5168 mZoomManager.getMultiTouchGestureDetector(); 5169 5170 if (mZoomManager.supportsMultiTouchZoom() && ev.getPointerCount() > 1) { 5171 if (!detector.isInProgress() && 5172 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 5173 // Insert a fake pointer down event in order to start 5174 // the zoom scale detector. 5175 MotionEvent temp = MotionEvent.obtain(ev); 5176 // Clear the original event and set it to 5177 // ACTION_POINTER_DOWN. 5178 try { 5179 temp.setAction(temp.getAction() & 5180 ~MotionEvent.ACTION_MASK | 5181 MotionEvent.ACTION_POINTER_DOWN); 5182 detector.onTouchEvent(temp); 5183 } finally { 5184 temp.recycle(); 5185 } 5186 } 5187 5188 detector.onTouchEvent(ev); 5189 5190 if (detector.isInProgress()) { 5191 mLastTouchTime = eventTime; 5192 cancelLongPress(); 5193 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5194 if (!mZoomManager.supportsPanDuringZoom()) { 5195 return true; 5196 } 5197 mTouchMode = TOUCH_DRAG_MODE; 5198 if (mVelocityTracker == null) { 5199 mVelocityTracker = VelocityTracker.obtain(); 5200 } 5201 } 5202 5203 x = detector.getFocusX(); 5204 y = detector.getFocusY(); 5205 action = ev.getAction() & MotionEvent.ACTION_MASK; 5206 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5207 cancelTouch(); 5208 action = MotionEvent.ACTION_DOWN; 5209 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5210 // set mLastTouchX/Y to the remaining point 5211 mLastTouchX = x; 5212 mLastTouchY = y; 5213 } else if (action == MotionEvent.ACTION_MOVE) { 5214 // negative x or y indicate it is on the edge, skip it. 5215 if (x < 0 || y < 0) { 5216 return true; 5217 } 5218 } 5219 } 5220 5221 // Due to the touch screen edge effect, a touch closer to the edge 5222 // always snapped to the edge. As getViewWidth() can be different from 5223 // getWidth() due to the scrollbar, adjusting the point to match 5224 // getViewWidth(). Same applied to the height. 5225 x = Math.min(x, getViewWidth() - 1); 5226 y = Math.min(y, getViewHeightWithTitle() - 1); 5227 5228 float fDeltaX = mLastTouchX - x; 5229 float fDeltaY = mLastTouchY - y; 5230 int deltaX = (int) fDeltaX; 5231 int deltaY = (int) fDeltaY; 5232 int contentX = viewToContentX((int) x + mScrollX); 5233 int contentY = viewToContentY((int) y + mScrollY); 5234 5235 switch (action) { 5236 case MotionEvent.ACTION_DOWN: { 5237 mPreventDefault = PREVENT_DEFAULT_NO; 5238 mConfirmMove = false; 5239 mInitialHitTestResult = null; 5240 if (!mScroller.isFinished()) { 5241 // stop the current scroll animation, but if this is 5242 // the start of a fling, allow it to add to the current 5243 // fling's velocity 5244 mScroller.abortAnimation(); 5245 mTouchMode = TOUCH_DRAG_START_MODE; 5246 mConfirmMove = true; 5247 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5248 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5249 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5250 if (getSettings().supportTouchOnly()) { 5251 removeTouchHighlight(true); 5252 } 5253 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5254 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5255 } else { 5256 // commit the short press action for the previous tap 5257 doShortPress(); 5258 mTouchMode = TOUCH_INIT_MODE; 5259 mDeferTouchProcess = (!inFullScreenMode() 5260 && mForwardTouchEvents) ? hitFocusedPlugin( 5261 contentX, contentY) : false; 5262 } 5263 } else { // the normal case 5264 mTouchMode = TOUCH_INIT_MODE; 5265 mDeferTouchProcess = (!inFullScreenMode() 5266 && mForwardTouchEvents) ? hitFocusedPlugin( 5267 contentX, contentY) : false; 5268 mWebViewCore.sendMessage( 5269 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5270 if (getSettings().supportTouchOnly()) { 5271 TouchHighlightData data = new TouchHighlightData(); 5272 data.mX = contentX; 5273 data.mY = contentY; 5274 data.mSlop = viewToContentDimension(mNavSlop); 5275 mWebViewCore.sendMessageDelayed( 5276 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5277 ViewConfiguration.getTapTimeout()); 5278 if (DEBUG_TOUCH_HIGHLIGHT) { 5279 if (getSettings().getNavDump()) { 5280 mTouchHighlightX = (int) x + mScrollX; 5281 mTouchHighlightY = (int) y + mScrollY; 5282 mPrivateHandler.postDelayed(new Runnable() { 5283 public void run() { 5284 mTouchHighlightX = mTouchHighlightY = 0; 5285 invalidate(); 5286 } 5287 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5288 } 5289 } 5290 } 5291 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5292 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5293 (eventTime - mLastTouchUpTime), eventTime); 5294 } 5295 if (mSelectingText) { 5296 mDrawSelectionPointer = false; 5297 mSelectionStarted = nativeStartSelection(contentX, contentY); 5298 if (DebugFlags.WEB_VIEW) { 5299 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5300 } 5301 invalidate(); 5302 } 5303 } 5304 // Trigger the link 5305 if (mTouchMode == TOUCH_INIT_MODE 5306 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5307 mPrivateHandler.sendEmptyMessageDelayed( 5308 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5309 mPrivateHandler.sendEmptyMessageDelayed( 5310 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5311 if (inFullScreenMode() || mDeferTouchProcess) { 5312 mPreventDefault = PREVENT_DEFAULT_YES; 5313 } else if (mForwardTouchEvents) { 5314 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5315 } else { 5316 mPreventDefault = PREVENT_DEFAULT_NO; 5317 } 5318 // pass the touch events from UI thread to WebCore thread 5319 if (shouldForwardTouchEvent()) { 5320 TouchEventData ted = new TouchEventData(); 5321 ted.mAction = action; 5322 ted.mPoints = new Point[1]; 5323 ted.mPoints[0] = new Point(contentX, contentY); 5324 ted.mMetaState = ev.getMetaState(); 5325 ted.mReprocess = mDeferTouchProcess; 5326 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5327 if (mDeferTouchProcess) { 5328 // still needs to set them for compute deltaX/Y 5329 mLastTouchX = x; 5330 mLastTouchY = y; 5331 break; 5332 } 5333 if (!inFullScreenMode()) { 5334 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5335 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5336 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5337 action, 0), TAP_TIMEOUT); 5338 } 5339 } 5340 } 5341 startTouch(x, y, eventTime); 5342 break; 5343 } 5344 case MotionEvent.ACTION_MOVE: { 5345 boolean firstMove = false; 5346 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5347 >= mTouchSlopSquare) { 5348 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5349 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5350 mConfirmMove = true; 5351 firstMove = true; 5352 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5353 mTouchMode = TOUCH_INIT_MODE; 5354 } 5355 if (getSettings().supportTouchOnly()) { 5356 removeTouchHighlight(true); 5357 } 5358 } 5359 // pass the touch events from UI thread to WebCore thread 5360 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5361 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5362 TouchEventData ted = new TouchEventData(); 5363 ted.mAction = action; 5364 ted.mPoints = new Point[1]; 5365 ted.mPoints[0] = new Point(contentX, contentY); 5366 ted.mMetaState = ev.getMetaState(); 5367 ted.mReprocess = mDeferTouchProcess; 5368 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5369 mLastSentTouchTime = eventTime; 5370 if (mDeferTouchProcess) { 5371 break; 5372 } 5373 if (firstMove && !inFullScreenMode()) { 5374 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5375 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5376 action, 0), TAP_TIMEOUT); 5377 } 5378 } 5379 if (mTouchMode == TOUCH_DONE_MODE 5380 || mPreventDefault == PREVENT_DEFAULT_YES) { 5381 // no dragging during scroll zoom animation, or when prevent 5382 // default is yes 5383 break; 5384 } 5385 if (mVelocityTracker == null) { 5386 Log.e(LOGTAG, "Got null mVelocityTracker when " 5387 + "mPreventDefault = " + mPreventDefault 5388 + " mDeferTouchProcess = " + mDeferTouchProcess 5389 + " mTouchMode = " + mTouchMode); 5390 } 5391 mVelocityTracker.addMovement(ev); 5392 if (mSelectingText && mSelectionStarted) { 5393 if (DebugFlags.WEB_VIEW) { 5394 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5395 } 5396 ViewParent parent = getParent(); 5397 if (parent != null) { 5398 parent.requestDisallowInterceptTouchEvent(true); 5399 } 5400 int layer = nativeScrollableLayer(contentX, contentY, mScrollingLayerRect); 5401 if (layer == 0) { 5402 mAutoScrollX = x <= SELECT_SCROLL ? -SELECT_SCROLL 5403 : x >= getViewWidth() - SELECT_SCROLL 5404 ? SELECT_SCROLL : 0; 5405 mAutoScrollY = y <= SELECT_SCROLL ? -SELECT_SCROLL 5406 : y >= getViewHeightWithTitle() - SELECT_SCROLL 5407 ? SELECT_SCROLL : 0; 5408 if (!mSentAutoScrollMessage) { 5409 mSentAutoScrollMessage = true; 5410 mPrivateHandler.sendEmptyMessageDelayed( 5411 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5412 } 5413 } else { 5414 // TODO: allow scrollable overflow div to autoscroll 5415 } 5416 nativeExtendSelection(contentX, contentY); 5417 invalidate(); 5418 break; 5419 } 5420 5421 if (mTouchMode != TOUCH_DRAG_MODE && 5422 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5423 5424 if (!mConfirmMove) { 5425 break; 5426 } 5427 5428 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5429 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5430 // track mLastTouchTime as we may need to do fling at 5431 // ACTION_UP 5432 mLastTouchTime = eventTime; 5433 break; 5434 } 5435 5436 // Only lock dragging to one axis if we don't have a scale in progress. 5437 // Scaling implies free-roaming movement. Note this is only ever a question 5438 // if mZoomManager.supportsPanDuringZoom() is true. 5439 if (detector != null && !detector.isInProgress()) { 5440 // if it starts nearly horizontal or vertical, enforce it 5441 int ax = Math.abs(deltaX); 5442 int ay = Math.abs(deltaY); 5443 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5444 mSnapScrollMode = SNAP_X; 5445 mSnapPositive = deltaX > 0; 5446 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5447 mSnapScrollMode = SNAP_Y; 5448 mSnapPositive = deltaY > 0; 5449 } 5450 } 5451 5452 mTouchMode = TOUCH_DRAG_MODE; 5453 mLastTouchX = x; 5454 mLastTouchY = y; 5455 fDeltaX = 0.0f; 5456 fDeltaY = 0.0f; 5457 deltaX = 0; 5458 deltaY = 0; 5459 5460 startScrollingLayer(x, y); 5461 startDrag(); 5462 } 5463 5464 // do pan 5465 boolean done = false; 5466 boolean keepScrollBarsVisible = false; 5467 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5468 mLastTouchX = x; 5469 mLastTouchY = y; 5470 keepScrollBarsVisible = done = true; 5471 } else { 5472 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5473 int ax = Math.abs(deltaX); 5474 int ay = Math.abs(deltaY); 5475 if (mSnapScrollMode == SNAP_X) { 5476 // radical change means getting out of snap mode 5477 if (ay > MAX_SLOPE_FOR_DIAG * ax 5478 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5479 mSnapScrollMode = SNAP_NONE; 5480 } 5481 // reverse direction means lock in the snap mode 5482 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5483 (mSnapPositive 5484 ? deltaX < -mMinLockSnapReverseDistance 5485 : deltaX > mMinLockSnapReverseDistance)) { 5486 mSnapScrollMode |= SNAP_LOCK; 5487 } 5488 } else { 5489 // radical change means getting out of snap mode 5490 if (ax > MAX_SLOPE_FOR_DIAG * ay 5491 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5492 mSnapScrollMode = SNAP_NONE; 5493 } 5494 // reverse direction means lock in the snap mode 5495 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5496 (mSnapPositive 5497 ? deltaY < -mMinLockSnapReverseDistance 5498 : deltaY > mMinLockSnapReverseDistance)) { 5499 mSnapScrollMode |= SNAP_LOCK; 5500 } 5501 } 5502 } 5503 if (mSnapScrollMode != SNAP_NONE) { 5504 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5505 deltaY = 0; 5506 } else { 5507 deltaX = 0; 5508 } 5509 } 5510 if ((deltaX | deltaY) != 0) { 5511 if (deltaX != 0) { 5512 mLastTouchX = x; 5513 } 5514 if (deltaY != 0) { 5515 mLastTouchY = y; 5516 } 5517 mHeldMotionless = MOTIONLESS_FALSE; 5518 } else { 5519 // keep the scrollbar on the screen even there is no 5520 // scroll 5521 mLastTouchX = x; 5522 mLastTouchY = y; 5523 keepScrollBarsVisible = true; 5524 } 5525 mLastTouchTime = eventTime; 5526 mUserScroll = true; 5527 } 5528 5529 doDrag(deltaX, deltaY); 5530 5531 // Turn off scrollbars when dragging a layer. 5532 if (keepScrollBarsVisible && 5533 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5534 if (mHeldMotionless != MOTIONLESS_TRUE) { 5535 mHeldMotionless = MOTIONLESS_TRUE; 5536 invalidate(); 5537 } 5538 // keep the scrollbar on the screen even there is no scroll 5539 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5540 false); 5541 // return false to indicate that we can't pan out of the 5542 // view space 5543 return !done; 5544 } 5545 break; 5546 } 5547 case MotionEvent.ACTION_UP: { 5548 if (!isFocused()) requestFocus(); 5549 // pass the touch events from UI thread to WebCore thread 5550 if (shouldForwardTouchEvent()) { 5551 TouchEventData ted = new TouchEventData(); 5552 ted.mAction = action; 5553 ted.mPoints = new Point[1]; 5554 ted.mPoints[0] = new Point(contentX, contentY); 5555 ted.mMetaState = ev.getMetaState(); 5556 ted.mReprocess = mDeferTouchProcess; 5557 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5558 } 5559 mLastTouchUpTime = eventTime; 5560 switch (mTouchMode) { 5561 case TOUCH_DOUBLE_TAP_MODE: // double tap 5562 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5563 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5564 if (inFullScreenMode() || mDeferTouchProcess) { 5565 TouchEventData ted = new TouchEventData(); 5566 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5567 ted.mPoints = new Point[1]; 5568 ted.mPoints[0] = new Point(contentX, contentY); 5569 ted.mMetaState = ev.getMetaState(); 5570 ted.mReprocess = mDeferTouchProcess; 5571 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5572 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5573 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5574 mTouchMode = TOUCH_DONE_MODE; 5575 } 5576 break; 5577 case TOUCH_INIT_MODE: // tap 5578 case TOUCH_SHORTPRESS_START_MODE: 5579 case TOUCH_SHORTPRESS_MODE: 5580 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5581 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5582 if (mConfirmMove) { 5583 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5584 " WebCore's response for touch down."); 5585 if (mPreventDefault != PREVENT_DEFAULT_YES 5586 && (computeMaxScrollX() > 0 5587 || computeMaxScrollY() > 0)) { 5588 // If the user has performed a very quick touch 5589 // sequence it is possible that we may get here 5590 // before WebCore has had a chance to process the events. 5591 // In this case, any call to preventDefault in the 5592 // JS touch handler will not have been executed yet. 5593 // Hence we will see both the UI (now) and WebCore 5594 // (when context switches) handling the event, 5595 // regardless of whether the web developer actually 5596 // doeses preventDefault in their touch handler. This 5597 // is the nature of our asynchronous touch model. 5598 5599 // we will not rewrite drag code here, but we 5600 // will try fling if it applies. 5601 WebViewCore.reducePriority(); 5602 // to get better performance, pause updating the 5603 // picture 5604 WebViewCore.pauseUpdatePicture(mWebViewCore); 5605 // fall through to TOUCH_DRAG_MODE 5606 } else { 5607 // WebKit may consume the touch event and modify 5608 // DOM. drawContentPicture() will be called with 5609 // animateSroll as true for better performance. 5610 // Force redraw in high-quality. 5611 invalidate(); 5612 break; 5613 } 5614 } else { 5615 if (mSelectingText) { 5616 // tapping on selection or controls does nothing 5617 if (!nativeHitSelection(contentX, contentY)) { 5618 selectionDone(); 5619 } 5620 break; 5621 } 5622 // only trigger double tap if the WebView is 5623 // scalable 5624 if (mTouchMode == TOUCH_INIT_MODE 5625 && (canZoomIn() || canZoomOut())) { 5626 mPrivateHandler.sendEmptyMessageDelayed( 5627 RELEASE_SINGLE_TAP, ViewConfiguration 5628 .getDoubleTapTimeout()); 5629 } else { 5630 doShortPress(); 5631 } 5632 break; 5633 } 5634 case TOUCH_DRAG_MODE: 5635 case TOUCH_DRAG_LAYER_MODE: 5636 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5637 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5638 // if the user waits a while w/o moving before the 5639 // up, we don't want to do a fling 5640 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5641 if (mVelocityTracker == null) { 5642 Log.e(LOGTAG, "Got null mVelocityTracker when " 5643 + "mPreventDefault = " 5644 + mPreventDefault 5645 + " mDeferTouchProcess = " 5646 + mDeferTouchProcess); 5647 } 5648 mVelocityTracker.addMovement(ev); 5649 // set to MOTIONLESS_IGNORE so that it won't keep 5650 // removing and sending message in 5651 // drawCoreAndCursorRing() 5652 mHeldMotionless = MOTIONLESS_IGNORE; 5653 doFling(); 5654 break; 5655 } else { 5656 if (mScroller.springBack(mScrollX, mScrollY, 0, 5657 computeMaxScrollX(), 0, 5658 computeMaxScrollY())) { 5659 invalidate(); 5660 } 5661 } 5662 // redraw in high-quality, as we're done dragging 5663 mHeldMotionless = MOTIONLESS_TRUE; 5664 invalidate(); 5665 // fall through 5666 case TOUCH_DRAG_START_MODE: 5667 // TOUCH_DRAG_START_MODE should not happen for the real 5668 // device as we almost certain will get a MOVE. But this 5669 // is possible on emulator. 5670 mLastVelocity = 0; 5671 WebViewCore.resumePriority(); 5672 if (!mSelectingText) { 5673 WebViewCore.resumeUpdatePicture(mWebViewCore); 5674 } 5675 break; 5676 } 5677 stopTouch(); 5678 break; 5679 } 5680 case MotionEvent.ACTION_CANCEL: { 5681 if (mTouchMode == TOUCH_DRAG_MODE) { 5682 mScroller.springBack(mScrollX, mScrollY, 0, 5683 computeMaxScrollX(), 0, computeMaxScrollY()); 5684 invalidate(); 5685 } 5686 cancelWebCoreTouchEvent(contentX, contentY, false); 5687 cancelTouch(); 5688 break; 5689 } 5690 } 5691 return true; 5692 } 5693 5694 private void passMultiTouchToWebKit(MotionEvent ev) { 5695 TouchEventData ted = new TouchEventData(); 5696 ted.mAction = ev.getAction() & MotionEvent.ACTION_MASK; 5697 final int count = ev.getPointerCount(); 5698 ted.mPoints = new Point[count]; 5699 for (int c = 0; c < count; c++) { 5700 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5701 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5702 ted.mPoints[c] = new Point(x, y); 5703 } 5704 ted.mMetaState = ev.getMetaState(); 5705 ted.mReprocess = mDeferTouchProcess; 5706 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5707 cancelLongPress(); 5708 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5709 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5710 } 5711 5712 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5713 if (shouldForwardTouchEvent()) { 5714 if (removeEvents) { 5715 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5716 } 5717 TouchEventData ted = new TouchEventData(); 5718 ted.mPoints = new Point[1]; 5719 ted.mPoints[0] = new Point(x, y); 5720 ted.mAction = MotionEvent.ACTION_CANCEL; 5721 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5722 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5723 } 5724 } 5725 5726 private void startTouch(float x, float y, long eventTime) { 5727 // Remember where the motion event started 5728 mLastTouchX = x; 5729 mLastTouchY = y; 5730 mLastTouchTime = eventTime; 5731 mVelocityTracker = VelocityTracker.obtain(); 5732 mSnapScrollMode = SNAP_NONE; 5733 } 5734 5735 private void startDrag() { 5736 WebViewCore.reducePriority(); 5737 // to get better performance, pause updating the picture 5738 WebViewCore.pauseUpdatePicture(mWebViewCore); 5739 if (!mDragFromTextInput) { 5740 nativeHideCursor(); 5741 } 5742 5743 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5744 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 5745 mZoomManager.invokeZoomPicker(); 5746 } 5747 } 5748 5749 private void doDrag(int deltaX, int deltaY) { 5750 if ((deltaX | deltaY) != 0) { 5751 int oldX = mScrollX; 5752 int oldY = mScrollY; 5753 int rangeX = computeMaxScrollX(); 5754 int rangeY = computeMaxScrollY(); 5755 int overscrollDistance = mOverscrollDistance; 5756 5757 // Check for the original scrolling layer in case we change 5758 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 5759 // reached the edge of a layer but mScrollingLayer will be non-zero 5760 // if we initiated the drag on a layer. 5761 if (mScrollingLayer != 0) { 5762 final int contentX = viewToContentDimension(deltaX); 5763 final int contentY = viewToContentDimension(deltaY); 5764 5765 // Check the scrolling bounds to see if we will actually do any 5766 // scrolling. The rectangle is in document coordinates. 5767 final int maxX = mScrollingLayerRect.right; 5768 final int maxY = mScrollingLayerRect.bottom; 5769 final int resultX = Math.max(0, 5770 Math.min(mScrollingLayerRect.left + contentX, maxX)); 5771 final int resultY = Math.max(0, 5772 Math.min(mScrollingLayerRect.top + contentY, maxY)); 5773 5774 if (resultX != mScrollingLayerRect.left || 5775 resultY != mScrollingLayerRect.top) { 5776 // In case we switched to dragging the page. 5777 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5778 deltaX = contentX; 5779 deltaY = contentY; 5780 oldX = mScrollingLayerRect.left; 5781 oldY = mScrollingLayerRect.top; 5782 rangeX = maxX; 5783 rangeY = maxY; 5784 } else { 5785 // Scroll the main page if we are not going to scroll the 5786 // layer. This does not reset mScrollingLayer in case the 5787 // user changes directions and the layer can scroll the 5788 // other way. 5789 mTouchMode = TOUCH_DRAG_MODE; 5790 } 5791 } 5792 5793 if (mOverScrollGlow != null) { 5794 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 5795 } 5796 5797 overScrollBy(deltaX, deltaY, oldX, oldY, 5798 rangeX, rangeY, 5799 mOverscrollDistance, mOverscrollDistance, true); 5800 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 5801 invalidate(); 5802 } 5803 } 5804 mZoomManager.keepZoomPickerVisible(); 5805 } 5806 5807 private void stopTouch() { 5808 // we also use mVelocityTracker == null to tell us that we are 5809 // not "moving around", so we can take the slower/prettier 5810 // mode in the drawing code 5811 if (mVelocityTracker != null) { 5812 mVelocityTracker.recycle(); 5813 mVelocityTracker = null; 5814 } 5815 5816 // Release any pulled glows 5817 if (mOverScrollGlow != null) { 5818 mOverScrollGlow.releaseAll(); 5819 } 5820 } 5821 5822 private void cancelTouch() { 5823 // we also use mVelocityTracker == null to tell us that we are 5824 // not "moving around", so we can take the slower/prettier 5825 // mode in the drawing code 5826 if (mVelocityTracker != null) { 5827 mVelocityTracker.recycle(); 5828 mVelocityTracker = null; 5829 } 5830 5831 if ((mTouchMode == TOUCH_DRAG_MODE 5832 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 5833 WebViewCore.resumePriority(); 5834 WebViewCore.resumeUpdatePicture(mWebViewCore); 5835 } 5836 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5837 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5838 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5839 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5840 if (getSettings().supportTouchOnly()) { 5841 removeTouchHighlight(true); 5842 } 5843 mHeldMotionless = MOTIONLESS_TRUE; 5844 mTouchMode = TOUCH_DONE_MODE; 5845 nativeHideCursor(); 5846 } 5847 5848 private long mTrackballFirstTime = 0; 5849 private long mTrackballLastTime = 0; 5850 private float mTrackballRemainsX = 0.0f; 5851 private float mTrackballRemainsY = 0.0f; 5852 private int mTrackballXMove = 0; 5853 private int mTrackballYMove = 0; 5854 private boolean mSelectingText = false; 5855 private boolean mSelectionStarted = false; 5856 private boolean mExtendSelection = false; 5857 private boolean mDrawSelectionPointer = false; 5858 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5859 private static final int TRACKBALL_TIMEOUT = 200; 5860 private static final int TRACKBALL_WAIT = 100; 5861 private static final int TRACKBALL_SCALE = 400; 5862 private static final int TRACKBALL_SCROLL_COUNT = 5; 5863 private static final int TRACKBALL_MOVE_COUNT = 10; 5864 private static final int TRACKBALL_MULTIPLIER = 3; 5865 private static final int SELECT_CURSOR_OFFSET = 16; 5866 private static final int SELECT_SCROLL = 5; 5867 private int mSelectX = 0; 5868 private int mSelectY = 0; 5869 private boolean mFocusSizeChanged = false; 5870 private boolean mTrackballDown = false; 5871 private long mTrackballUpTime = 0; 5872 private long mLastCursorTime = 0; 5873 private Rect mLastCursorBounds; 5874 5875 // Set by default; BrowserActivity clears to interpret trackball data 5876 // directly for movement. Currently, the framework only passes 5877 // arrow key events, not trackball events, from one child to the next 5878 private boolean mMapTrackballToArrowKeys = true; 5879 5880 public void setMapTrackballToArrowKeys(boolean setMap) { 5881 mMapTrackballToArrowKeys = setMap; 5882 } 5883 5884 void resetTrackballTime() { 5885 mTrackballLastTime = 0; 5886 } 5887 5888 @Override 5889 public boolean onTrackballEvent(MotionEvent ev) { 5890 long time = ev.getEventTime(); 5891 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5892 if (ev.getY() > 0) pageDown(true); 5893 if (ev.getY() < 0) pageUp(true); 5894 return true; 5895 } 5896 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5897 if (mSelectingText) { 5898 return true; // discard press if copy in progress 5899 } 5900 mTrackballDown = true; 5901 if (mNativeClass == 0) { 5902 return false; 5903 } 5904 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5905 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5906 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5907 nativeSelectBestAt(mLastCursorBounds); 5908 } 5909 if (DebugFlags.WEB_VIEW) { 5910 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5911 + " time=" + time 5912 + " mLastCursorTime=" + mLastCursorTime); 5913 } 5914 if (isInTouchMode()) requestFocusFromTouch(); 5915 return false; // let common code in onKeyDown at it 5916 } 5917 if (ev.getAction() == MotionEvent.ACTION_UP) { 5918 // LONG_PRESS_CENTER is set in common onKeyDown 5919 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5920 mTrackballDown = false; 5921 mTrackballUpTime = time; 5922 if (mSelectingText) { 5923 if (mExtendSelection) { 5924 copySelection(); 5925 selectionDone(); 5926 } else { 5927 mExtendSelection = true; 5928 nativeSetExtendSelection(); 5929 invalidate(); // draw the i-beam instead of the arrow 5930 } 5931 return true; // discard press if copy in progress 5932 } 5933 if (DebugFlags.WEB_VIEW) { 5934 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5935 + " time=" + time 5936 ); 5937 } 5938 return false; // let common code in onKeyUp at it 5939 } 5940 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 5941 (mAccessibilityInjector != null || mAccessibilityScriptInjected)) { 5942 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5943 return false; 5944 } 5945 if (mTrackballDown) { 5946 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5947 return true; // discard move if trackball is down 5948 } 5949 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5950 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5951 return true; 5952 } 5953 // TODO: alternatively we can do panning as touch does 5954 switchOutDrawHistory(); 5955 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5956 if (DebugFlags.WEB_VIEW) { 5957 Log.v(LOGTAG, "onTrackballEvent time=" 5958 + time + " last=" + mTrackballLastTime); 5959 } 5960 mTrackballFirstTime = time; 5961 mTrackballXMove = mTrackballYMove = 0; 5962 } 5963 mTrackballLastTime = time; 5964 if (DebugFlags.WEB_VIEW) { 5965 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5966 } 5967 mTrackballRemainsX += ev.getX(); 5968 mTrackballRemainsY += ev.getY(); 5969 doTrackball(time, ev.getMetaState()); 5970 return true; 5971 } 5972 5973 void moveSelection(float xRate, float yRate) { 5974 if (mNativeClass == 0) 5975 return; 5976 int width = getViewWidth(); 5977 int height = getViewHeight(); 5978 mSelectX += xRate; 5979 mSelectY += yRate; 5980 int maxX = width + mScrollX; 5981 int maxY = height + mScrollY; 5982 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5983 , mSelectX)); 5984 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5985 , mSelectY)); 5986 if (DebugFlags.WEB_VIEW) { 5987 Log.v(LOGTAG, "moveSelection" 5988 + " mSelectX=" + mSelectX 5989 + " mSelectY=" + mSelectY 5990 + " mScrollX=" + mScrollX 5991 + " mScrollY=" + mScrollY 5992 + " xRate=" + xRate 5993 + " yRate=" + yRate 5994 ); 5995 } 5996 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5997 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5998 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5999 : 0; 6000 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6001 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6002 : 0; 6003 pinScrollBy(scrollX, scrollY, true, 0); 6004 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6005 requestRectangleOnScreen(select); 6006 invalidate(); 6007 } 6008 6009 private int scaleTrackballX(float xRate, int width) { 6010 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6011 int nextXMove = xMove; 6012 if (xMove > 0) { 6013 if (xMove > mTrackballXMove) { 6014 xMove -= mTrackballXMove; 6015 } 6016 } else if (xMove < mTrackballXMove) { 6017 xMove -= mTrackballXMove; 6018 } 6019 mTrackballXMove = nextXMove; 6020 return xMove; 6021 } 6022 6023 private int scaleTrackballY(float yRate, int height) { 6024 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6025 int nextYMove = yMove; 6026 if (yMove > 0) { 6027 if (yMove > mTrackballYMove) { 6028 yMove -= mTrackballYMove; 6029 } 6030 } else if (yMove < mTrackballYMove) { 6031 yMove -= mTrackballYMove; 6032 } 6033 mTrackballYMove = nextYMove; 6034 return yMove; 6035 } 6036 6037 private int keyCodeToSoundsEffect(int keyCode) { 6038 switch(keyCode) { 6039 case KeyEvent.KEYCODE_DPAD_UP: 6040 return SoundEffectConstants.NAVIGATION_UP; 6041 case KeyEvent.KEYCODE_DPAD_RIGHT: 6042 return SoundEffectConstants.NAVIGATION_RIGHT; 6043 case KeyEvent.KEYCODE_DPAD_DOWN: 6044 return SoundEffectConstants.NAVIGATION_DOWN; 6045 case KeyEvent.KEYCODE_DPAD_LEFT: 6046 return SoundEffectConstants.NAVIGATION_LEFT; 6047 } 6048 throw new IllegalArgumentException("keyCode must be one of " + 6049 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6050 "KEYCODE_DPAD_LEFT}."); 6051 } 6052 6053 private void doTrackball(long time, int metaState) { 6054 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6055 if (elapsed == 0) { 6056 elapsed = TRACKBALL_TIMEOUT; 6057 } 6058 float xRate = mTrackballRemainsX * 1000 / elapsed; 6059 float yRate = mTrackballRemainsY * 1000 / elapsed; 6060 int viewWidth = getViewWidth(); 6061 int viewHeight = getViewHeight(); 6062 if (mSelectingText) { 6063 if (!mDrawSelectionPointer) { 6064 // The last selection was made by touch, disabling drawing the 6065 // selection pointer. Allow the trackball to adjust the 6066 // position of the touch control. 6067 mSelectX = contentToViewX(nativeSelectionX()); 6068 mSelectY = contentToViewY(nativeSelectionY()); 6069 mDrawSelectionPointer = mExtendSelection = true; 6070 nativeSetExtendSelection(); 6071 } 6072 moveSelection(scaleTrackballX(xRate, viewWidth), 6073 scaleTrackballY(yRate, viewHeight)); 6074 mTrackballRemainsX = mTrackballRemainsY = 0; 6075 return; 6076 } 6077 float ax = Math.abs(xRate); 6078 float ay = Math.abs(yRate); 6079 float maxA = Math.max(ax, ay); 6080 if (DebugFlags.WEB_VIEW) { 6081 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6082 + " xRate=" + xRate 6083 + " yRate=" + yRate 6084 + " mTrackballRemainsX=" + mTrackballRemainsX 6085 + " mTrackballRemainsY=" + mTrackballRemainsY); 6086 } 6087 int width = mContentWidth - viewWidth; 6088 int height = mContentHeight - viewHeight; 6089 if (width < 0) width = 0; 6090 if (height < 0) height = 0; 6091 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6092 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6093 maxA = Math.max(ax, ay); 6094 int count = Math.max(0, (int) maxA); 6095 int oldScrollX = mScrollX; 6096 int oldScrollY = mScrollY; 6097 if (count > 0) { 6098 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6099 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6100 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6101 KeyEvent.KEYCODE_DPAD_RIGHT; 6102 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6103 if (DebugFlags.WEB_VIEW) { 6104 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6105 + " count=" + count 6106 + " mTrackballRemainsX=" + mTrackballRemainsX 6107 + " mTrackballRemainsY=" + mTrackballRemainsY); 6108 } 6109 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6110 for (int i = 0; i < count; i++) { 6111 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6112 } 6113 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6114 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6115 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6116 } 6117 mTrackballRemainsX = mTrackballRemainsY = 0; 6118 } 6119 if (count >= TRACKBALL_SCROLL_COUNT) { 6120 int xMove = scaleTrackballX(xRate, width); 6121 int yMove = scaleTrackballY(yRate, height); 6122 if (DebugFlags.WEB_VIEW) { 6123 Log.v(LOGTAG, "doTrackball pinScrollBy" 6124 + " count=" + count 6125 + " xMove=" + xMove + " yMove=" + yMove 6126 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6127 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6128 ); 6129 } 6130 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6131 xMove = 0; 6132 } 6133 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6134 yMove = 0; 6135 } 6136 if (xMove != 0 || yMove != 0) { 6137 pinScrollBy(xMove, yMove, true, 0); 6138 } 6139 mUserScroll = true; 6140 } 6141 } 6142 6143 /** 6144 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6145 * @return Maximum horizontal scroll position within real content 6146 */ 6147 int computeMaxScrollX() { 6148 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6149 } 6150 6151 /** 6152 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6153 * @return Maximum vertical scroll position within real content 6154 */ 6155 int computeMaxScrollY() { 6156 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6157 - getViewHeightWithTitle(), 0); 6158 } 6159 6160 boolean updateScrollCoordinates(int x, int y) { 6161 int oldX = mScrollX; 6162 int oldY = mScrollY; 6163 mScrollX = x; 6164 mScrollY = y; 6165 if (oldX != mScrollX || oldY != mScrollY) { 6166 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6167 return true; 6168 } else { 6169 return false; 6170 } 6171 } 6172 6173 public void flingScroll(int vx, int vy) { 6174 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6175 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6176 invalidate(); 6177 } 6178 6179 private void doFling() { 6180 if (mVelocityTracker == null) { 6181 return; 6182 } 6183 int maxX = computeMaxScrollX(); 6184 int maxY = computeMaxScrollY(); 6185 6186 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6187 int vx = (int) mVelocityTracker.getXVelocity(); 6188 int vy = (int) mVelocityTracker.getYVelocity(); 6189 6190 int scrollX = mScrollX; 6191 int scrollY = mScrollY; 6192 int overscrollDistance = mOverscrollDistance; 6193 int overflingDistance = mOverflingDistance; 6194 6195 // Use the layer's scroll data if applicable. 6196 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6197 scrollX = mScrollingLayerRect.left; 6198 scrollY = mScrollingLayerRect.top; 6199 maxX = mScrollingLayerRect.right; 6200 maxY = mScrollingLayerRect.bottom; 6201 // No overscrolling for layers. 6202 overscrollDistance = overflingDistance = 0; 6203 } 6204 6205 if (mSnapScrollMode != SNAP_NONE) { 6206 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6207 vy = 0; 6208 } else { 6209 vx = 0; 6210 } 6211 } 6212 if (true /* EMG release: make our fling more like Maps' */) { 6213 // maps cuts their velocity in half 6214 vx = vx * 3 / 4; 6215 vy = vy * 3 / 4; 6216 } 6217 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6218 WebViewCore.resumePriority(); 6219 if (!mSelectingText) { 6220 WebViewCore.resumeUpdatePicture(mWebViewCore); 6221 } 6222 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6223 invalidate(); 6224 } 6225 return; 6226 } 6227 float currentVelocity = mScroller.getCurrVelocity(); 6228 float velocity = (float) Math.hypot(vx, vy); 6229 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6230 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6231 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6232 - Math.atan2(vy, vx))); 6233 final float circle = (float) (Math.PI) * 2.0f; 6234 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6235 vx += currentVelocity * mLastVelX / mLastVelocity; 6236 vy += currentVelocity * mLastVelY / mLastVelocity; 6237 velocity = (float) Math.hypot(vx, vy); 6238 if (DebugFlags.WEB_VIEW) { 6239 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6240 } 6241 } else if (DebugFlags.WEB_VIEW) { 6242 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6243 } 6244 } else if (DebugFlags.WEB_VIEW) { 6245 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6246 + " current=" + currentVelocity 6247 + " vx=" + vx + " vy=" + vy 6248 + " maxX=" + maxX + " maxY=" + maxY 6249 + " scrollX=" + scrollX + " scrollY=" + scrollY 6250 + " layer=" + mScrollingLayer); 6251 } 6252 6253 // Allow sloppy flings without overscrolling at the edges. 6254 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6255 vx = 0; 6256 } 6257 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6258 vy = 0; 6259 } 6260 6261 if (overscrollDistance < overflingDistance) { 6262 if ((vx > 0 && scrollX == -overscrollDistance) || 6263 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6264 vx = 0; 6265 } 6266 if ((vy > 0 && scrollY == -overscrollDistance) || 6267 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6268 vy = 0; 6269 } 6270 } 6271 6272 mLastVelX = vx; 6273 mLastVelY = vy; 6274 mLastVelocity = velocity; 6275 6276 // no horizontal overscroll if the content just fits 6277 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6278 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6279 // Duration is calculated based on velocity. With range boundaries and overscroll 6280 // we may not know how long the final animation will take. (Hence the deprecation 6281 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6282 // resumes during this effect we will take a performance hit. See computeScroll; 6283 // we resume webcore there when the animation is finished. 6284 final int time = mScroller.getDuration(); 6285 6286 // Suppress scrollbars for layer scrolling. 6287 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6288 awakenScrollBars(time); 6289 } 6290 6291 invalidate(); 6292 } 6293 6294 /** 6295 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6296 * in charge of installing this view to the view hierarchy. This view will 6297 * become visible when the user starts scrolling via touch and fade away if 6298 * the user does not interact with it. 6299 * <p/> 6300 * API version 3 introduces a built-in zoom mechanism that is shown 6301 * automatically by the MapView. This is the preferred approach for 6302 * showing the zoom UI. 6303 * 6304 * @deprecated The built-in zoom mechanism is preferred, see 6305 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6306 */ 6307 @Deprecated 6308 public View getZoomControls() { 6309 if (!getSettings().supportZoom()) { 6310 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6311 return null; 6312 } 6313 return mZoomManager.getExternalZoomPicker(); 6314 } 6315 6316 void dismissZoomControl() { 6317 mZoomManager.dismissZoomPicker(); 6318 } 6319 6320 float getDefaultZoomScale() { 6321 return mZoomManager.getDefaultScale(); 6322 } 6323 6324 /** 6325 * @return TRUE if the WebView can be zoomed in. 6326 */ 6327 public boolean canZoomIn() { 6328 return mZoomManager.canZoomIn(); 6329 } 6330 6331 /** 6332 * @return TRUE if the WebView can be zoomed out. 6333 */ 6334 public boolean canZoomOut() { 6335 return mZoomManager.canZoomOut(); 6336 } 6337 6338 /** 6339 * Perform zoom in in the webview 6340 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6341 */ 6342 public boolean zoomIn() { 6343 return mZoomManager.zoomIn(); 6344 } 6345 6346 /** 6347 * Perform zoom out in the webview 6348 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6349 */ 6350 public boolean zoomOut() { 6351 return mZoomManager.zoomOut(); 6352 } 6353 6354 private void updateSelection() { 6355 if (mNativeClass == 0) { 6356 return; 6357 } 6358 // mLastTouchX and mLastTouchY are the point in the current viewport 6359 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6360 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6361 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6362 contentX + mNavSlop, contentY + mNavSlop); 6363 nativeSelectBestAt(rect); 6364 mInitialHitTestResult = hitTestResult(null); 6365 } 6366 6367 /** 6368 * Scroll the focused text field/area to match the WebTextView 6369 * @param xPercent New x position of the WebTextView from 0 to 1. 6370 * @param y New y position of the WebTextView in view coordinates 6371 */ 6372 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 6373 if (!inEditingMode() || mWebViewCore == null) { 6374 return; 6375 } 6376 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 6377 // Since this position is relative to the top of the text input 6378 // field, we do not need to take the title bar's height into 6379 // consideration. 6380 viewToContentDimension(y), 6381 new Float(xPercent)); 6382 } 6383 6384 /** 6385 * Set our starting point and time for a drag from the WebTextView. 6386 */ 6387 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6388 if (!inEditingMode()) { 6389 return; 6390 } 6391 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 6392 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 6393 mLastTouchTime = eventTime; 6394 if (!mScroller.isFinished()) { 6395 abortAnimation(); 6396 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6397 } 6398 mSnapScrollMode = SNAP_NONE; 6399 mVelocityTracker = VelocityTracker.obtain(); 6400 mTouchMode = TOUCH_DRAG_START_MODE; 6401 } 6402 6403 /** 6404 * Given a motion event from the WebTextView, set its location to our 6405 * coordinates, and handle the event. 6406 */ 6407 /*package*/ boolean textFieldDrag(MotionEvent event) { 6408 if (!inEditingMode()) { 6409 return false; 6410 } 6411 mDragFromTextInput = true; 6412 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6413 (float) (mWebTextView.getTop() - mScrollY)); 6414 boolean result = onTouchEvent(event); 6415 mDragFromTextInput = false; 6416 return result; 6417 } 6418 6419 /** 6420 * Due a touch up from a WebTextView. This will be handled by webkit to 6421 * change the selection. 6422 * @param event MotionEvent in the WebTextView's coordinates. 6423 */ 6424 /*package*/ void touchUpOnTextField(MotionEvent event) { 6425 if (!inEditingMode()) { 6426 return; 6427 } 6428 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6429 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6430 nativeMotionUp(x, y, mNavSlop); 6431 } 6432 6433 /** 6434 * Called when pressing the center key or trackball on a textfield. 6435 */ 6436 /*package*/ void centerKeyPressOnTextField() { 6437 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6438 nativeCursorNodePointer()); 6439 } 6440 6441 private void doShortPress() { 6442 if (mNativeClass == 0) { 6443 return; 6444 } 6445 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6446 return; 6447 } 6448 mTouchMode = TOUCH_DONE_MODE; 6449 switchOutDrawHistory(); 6450 // mLastTouchX and mLastTouchY are the point in the current viewport 6451 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6452 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6453 if (getSettings().supportTouchOnly()) { 6454 removeTouchHighlight(false); 6455 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6456 // use "0" as generation id to inform WebKit to use the same x/y as 6457 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6458 touchUpData.mMoveGeneration = 0; 6459 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6460 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6461 WebViewCore.MotionUpData motionUpData = new WebViewCore 6462 .MotionUpData(); 6463 motionUpData.mFrame = nativeCacheHitFramePointer(); 6464 motionUpData.mNode = nativeCacheHitNodePointer(); 6465 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6466 motionUpData.mX = contentX; 6467 motionUpData.mY = contentY; 6468 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6469 motionUpData); 6470 } else { 6471 doMotionUp(contentX, contentY); 6472 } 6473 } 6474 6475 private void doMotionUp(int contentX, int contentY) { 6476 if (nativeMotionUp(contentX, contentY, mNavSlop) && mLogEvent) { 6477 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6478 } 6479 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6480 playSoundEffect(SoundEffectConstants.CLICK); 6481 } 6482 } 6483 6484 /* 6485 * Return true if the view (Plugin) is fully visible and maximized inside 6486 * the WebView. 6487 */ 6488 boolean isPluginFitOnScreen(ViewManager.ChildView view) { 6489 final int viewWidth = getViewWidth(); 6490 final int viewHeight = getViewHeightWithTitle(); 6491 float scale = Math.min((float) viewWidth / view.width, (float) viewHeight / view.height); 6492 scale = mZoomManager.computeScaleWithLimits(scale); 6493 return !mZoomManager.willScaleTriggerZoom(scale) 6494 && contentToViewX(view.x) >= mScrollX 6495 && contentToViewX(view.x + view.width) <= mScrollX + viewWidth 6496 && contentToViewY(view.y) >= mScrollY 6497 && contentToViewY(view.y + view.height) <= mScrollY + viewHeight; 6498 } 6499 6500 /* 6501 * Maximize and center the rectangle, specified in the document coordinate 6502 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6503 * animated scroll to center it. If the zoom needs to be changed, find the 6504 * zoom center and do a smooth zoom transition. 6505 */ 6506 void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 6507 int viewWidth = getViewWidth(); 6508 int viewHeight = getViewHeightWithTitle(); 6509 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 6510 / docHeight); 6511 scale = mZoomManager.computeScaleWithLimits(scale); 6512 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6513 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 6514 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 6515 true, 0); 6516 } else { 6517 float actualScale = mZoomManager.getScale(); 6518 float oldScreenX = docX * actualScale - mScrollX; 6519 float rectViewX = docX * scale; 6520 float rectViewWidth = docWidth * scale; 6521 float newMaxWidth = mContentWidth * scale; 6522 float newScreenX = (viewWidth - rectViewWidth) / 2; 6523 // pin the newX to the WebView 6524 if (newScreenX > rectViewX) { 6525 newScreenX = rectViewX; 6526 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6527 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6528 } 6529 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6530 / (scale - actualScale); 6531 float oldScreenY = docY * actualScale + getTitleHeight() 6532 - mScrollY; 6533 float rectViewY = docY * scale + getTitleHeight(); 6534 float rectViewHeight = docHeight * scale; 6535 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6536 float newScreenY = (viewHeight - rectViewHeight) / 2; 6537 // pin the newY to the WebView 6538 if (newScreenY > rectViewY) { 6539 newScreenY = rectViewY; 6540 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6541 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6542 } 6543 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6544 / (scale - actualScale); 6545 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6546 mZoomManager.startZoomAnimation(scale, false); 6547 } 6548 } 6549 6550 // Called by JNI to handle a touch on a node representing an email address, 6551 // address, or phone number 6552 private void overrideLoading(String url) { 6553 mCallbackProxy.uiOverrideUrlLoading(url); 6554 } 6555 6556 @Override 6557 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6558 // FIXME: If a subwindow is showing find, and the user touches the 6559 // background window, it can steal focus. 6560 if (mFindIsUp) return false; 6561 boolean result = false; 6562 if (inEditingMode()) { 6563 result = mWebTextView.requestFocus(direction, 6564 previouslyFocusedRect); 6565 } else { 6566 result = super.requestFocus(direction, previouslyFocusedRect); 6567 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6568 // For cases such as GMail, where we gain focus from a direction, 6569 // we want to move to the first available link. 6570 // FIXME: If there are no visible links, we may not want to 6571 int fakeKeyDirection = 0; 6572 switch(direction) { 6573 case View.FOCUS_UP: 6574 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6575 break; 6576 case View.FOCUS_DOWN: 6577 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6578 break; 6579 case View.FOCUS_LEFT: 6580 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6581 break; 6582 case View.FOCUS_RIGHT: 6583 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6584 break; 6585 default: 6586 return result; 6587 } 6588 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6589 navHandledKey(fakeKeyDirection, 1, true, 0); 6590 } 6591 } 6592 } 6593 return result; 6594 } 6595 6596 @Override 6597 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6598 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6599 6600 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6601 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6602 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6603 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6604 6605 int measuredHeight = heightSize; 6606 int measuredWidth = widthSize; 6607 6608 // Grab the content size from WebViewCore. 6609 int contentHeight = contentToViewDimension(mContentHeight); 6610 int contentWidth = contentToViewDimension(mContentWidth); 6611 6612// Log.d(LOGTAG, "------- measure " + heightMode); 6613 6614 if (heightMode != MeasureSpec.EXACTLY) { 6615 mHeightCanMeasure = true; 6616 measuredHeight = contentHeight; 6617 if (heightMode == MeasureSpec.AT_MOST) { 6618 // If we are larger than the AT_MOST height, then our height can 6619 // no longer be measured and we should scroll internally. 6620 if (measuredHeight > heightSize) { 6621 measuredHeight = heightSize; 6622 mHeightCanMeasure = false; 6623 } else if (measuredHeight < heightSize) { 6624 measuredHeight |= MEASURED_STATE_TOO_SMALL; 6625 } 6626 } 6627 } else { 6628 mHeightCanMeasure = false; 6629 } 6630 if (mNativeClass != 0) { 6631 nativeSetHeightCanMeasure(mHeightCanMeasure); 6632 } 6633 // For the width, always use the given size unless unspecified. 6634 if (widthMode == MeasureSpec.UNSPECIFIED) { 6635 mWidthCanMeasure = true; 6636 measuredWidth = contentWidth; 6637 } else { 6638 if (measuredWidth < contentWidth) { 6639 measuredWidth |= MEASURED_STATE_TOO_SMALL; 6640 } 6641 mWidthCanMeasure = false; 6642 } 6643 6644 synchronized (this) { 6645 setMeasuredDimension(measuredWidth, measuredHeight); 6646 } 6647 } 6648 6649 @Override 6650 public boolean requestChildRectangleOnScreen(View child, 6651 Rect rect, 6652 boolean immediate) { 6653 if (mNativeClass == 0) { 6654 return false; 6655 } 6656 // don't scroll while in zoom animation. When it is done, we will adjust 6657 // the necessary components (e.g., WebTextView if it is in editing mode) 6658 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6659 return false; 6660 } 6661 6662 rect.offset(child.getLeft() - child.getScrollX(), 6663 child.getTop() - child.getScrollY()); 6664 6665 Rect content = new Rect(viewToContentX(mScrollX), 6666 viewToContentY(mScrollY), 6667 viewToContentX(mScrollX + getWidth() 6668 - getVerticalScrollbarWidth()), 6669 viewToContentY(mScrollY + getViewHeightWithTitle())); 6670 content = nativeSubtractLayers(content); 6671 int screenTop = contentToViewY(content.top); 6672 int screenBottom = contentToViewY(content.bottom); 6673 int height = screenBottom - screenTop; 6674 int scrollYDelta = 0; 6675 6676 if (rect.bottom > screenBottom) { 6677 int oneThirdOfScreenHeight = height / 3; 6678 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6679 // If the rectangle is too tall to fit in the bottom two thirds 6680 // of the screen, place it at the top. 6681 scrollYDelta = rect.top - screenTop; 6682 } else { 6683 // If the rectangle will still fit on screen, we want its 6684 // top to be in the top third of the screen. 6685 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6686 } 6687 } else if (rect.top < screenTop) { 6688 scrollYDelta = rect.top - screenTop; 6689 } 6690 6691 int screenLeft = contentToViewX(content.left); 6692 int screenRight = contentToViewX(content.right); 6693 int width = screenRight - screenLeft; 6694 int scrollXDelta = 0; 6695 6696 if (rect.right > screenRight && rect.left > screenLeft) { 6697 if (rect.width() > width) { 6698 scrollXDelta += (rect.left - screenLeft); 6699 } else { 6700 scrollXDelta += (rect.right - screenRight); 6701 } 6702 } else if (rect.left < screenLeft) { 6703 scrollXDelta -= (screenLeft - rect.left); 6704 } 6705 6706 if ((scrollYDelta | scrollXDelta) != 0) { 6707 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6708 } 6709 6710 return false; 6711 } 6712 6713 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6714 String replace, int newStart, int newEnd) { 6715 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6716 arg.mReplace = replace; 6717 arg.mNewStart = newStart; 6718 arg.mNewEnd = newEnd; 6719 mTextGeneration++; 6720 arg.mTextGeneration = mTextGeneration; 6721 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6722 } 6723 6724 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6725 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6726 arg.mEvent = event; 6727 arg.mCurrentText = currentText; 6728 // Increase our text generation number, and pass it to webcore thread 6729 mTextGeneration++; 6730 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6731 // WebKit's document state is not saved until about to leave the page. 6732 // To make sure the host application, like Browser, has the up to date 6733 // document state when it goes to background, we force to save the 6734 // document state. 6735 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6736 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6737 cursorData(), 1000); 6738 } 6739 6740 /* package */ synchronized WebViewCore getWebViewCore() { 6741 return mWebViewCore; 6742 } 6743 6744 //------------------------------------------------------------------------- 6745 // Methods can be called from a separate thread, like WebViewCore 6746 // If it needs to call the View system, it has to send message. 6747 //------------------------------------------------------------------------- 6748 6749 /** 6750 * General handler to receive message coming from webkit thread 6751 */ 6752 class PrivateHandler extends Handler { 6753 @Override 6754 public void handleMessage(Message msg) { 6755 // exclude INVAL_RECT_MSG_ID since it is frequently output 6756 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6757 if (msg.what >= FIRST_PRIVATE_MSG_ID 6758 && msg.what <= LAST_PRIVATE_MSG_ID) { 6759 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6760 - FIRST_PRIVATE_MSG_ID]); 6761 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6762 && msg.what <= LAST_PACKAGE_MSG_ID) { 6763 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6764 - FIRST_PACKAGE_MSG_ID]); 6765 } else { 6766 Log.v(LOGTAG, Integer.toString(msg.what)); 6767 } 6768 } 6769 if (mWebViewCore == null) { 6770 // after WebView's destroy() is called, skip handling messages. 6771 return; 6772 } 6773 switch (msg.what) { 6774 case REMEMBER_PASSWORD: { 6775 mDatabase.setUsernamePassword( 6776 msg.getData().getString("host"), 6777 msg.getData().getString("username"), 6778 msg.getData().getString("password")); 6779 ((Message) msg.obj).sendToTarget(); 6780 break; 6781 } 6782 case NEVER_REMEMBER_PASSWORD: { 6783 mDatabase.setUsernamePassword( 6784 msg.getData().getString("host"), null, null); 6785 ((Message) msg.obj).sendToTarget(); 6786 break; 6787 } 6788 case PREVENT_DEFAULT_TIMEOUT: { 6789 // if timeout happens, cancel it so that it won't block UI 6790 // to continue handling touch events 6791 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6792 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6793 || (msg.arg1 == MotionEvent.ACTION_MOVE 6794 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6795 cancelWebCoreTouchEvent( 6796 viewToContentX((int) mLastTouchX + mScrollX), 6797 viewToContentY((int) mLastTouchY + mScrollY), 6798 true); 6799 } 6800 break; 6801 } 6802 case SCROLL_SELECT_TEXT: { 6803 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 6804 mSentAutoScrollMessage = false; 6805 break; 6806 } 6807 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 6808 sendEmptyMessageDelayed( 6809 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6810 break; 6811 } 6812 case SWITCH_TO_SHORTPRESS: { 6813 mInitialHitTestResult = null; // set by updateSelection() 6814 if (mTouchMode == TOUCH_INIT_MODE) { 6815 if (!getSettings().supportTouchOnly() 6816 && mPreventDefault != PREVENT_DEFAULT_YES) { 6817 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6818 updateSelection(); 6819 } else { 6820 // set to TOUCH_SHORTPRESS_MODE so that it won't 6821 // trigger double tap any more 6822 mTouchMode = TOUCH_SHORTPRESS_MODE; 6823 } 6824 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6825 mTouchMode = TOUCH_DONE_MODE; 6826 } 6827 break; 6828 } 6829 case SWITCH_TO_LONGPRESS: { 6830 if (getSettings().supportTouchOnly()) { 6831 removeTouchHighlight(false); 6832 } 6833 if (inFullScreenMode() || mDeferTouchProcess) { 6834 TouchEventData ted = new TouchEventData(); 6835 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6836 ted.mPoints = new Point[1]; 6837 ted.mPoints[0] = new Point(viewToContentX((int) mLastTouchX + mScrollX), 6838 viewToContentY((int) mLastTouchY + mScrollY)); 6839 // metaState for long press is tricky. Should it be the 6840 // state when the press started or when the press was 6841 // released? Or some intermediary key state? For 6842 // simplicity for now, we don't set it. 6843 ted.mMetaState = 0; 6844 ted.mReprocess = mDeferTouchProcess; 6845 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6846 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6847 mTouchMode = TOUCH_DONE_MODE; 6848 performLongClick(); 6849 } 6850 break; 6851 } 6852 case RELEASE_SINGLE_TAP: { 6853 doShortPress(); 6854 break; 6855 } 6856 case SCROLL_BY_MSG_ID: 6857 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6858 break; 6859 case SYNC_SCROLL_TO_MSG_ID: 6860 if (mUserScroll) { 6861 // if user has scrolled explicitly, don't sync the 6862 // scroll position any more 6863 mUserScroll = false; 6864 break; 6865 } 6866 setContentScrollTo(msg.arg1, msg.arg2); 6867 break; 6868 case SCROLL_TO_MSG_ID: 6869 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6870 // if we can't scroll to the exact position due to pin, 6871 // send a message to WebCore to re-scroll when we get a 6872 // new picture 6873 mUserScroll = false; 6874 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6875 msg.arg1, msg.arg2); 6876 } 6877 break; 6878 case SPAWN_SCROLL_TO_MSG_ID: 6879 spawnContentScrollTo(msg.arg1, msg.arg2); 6880 break; 6881 case UPDATE_ZOOM_RANGE: { 6882 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 6883 // mScrollX contains the new minPrefWidth 6884 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 6885 break; 6886 } 6887 case REPLACE_BASE_CONTENT: { 6888 nativeReplaceBaseContent(msg.arg1); 6889 break; 6890 } 6891 case NEW_PICTURE_MSG_ID: { 6892 // called for new content 6893 mUserScroll = false; 6894 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 6895 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion.getBounds()); 6896 final Point viewSize = draw.mViewSize; 6897 WebViewCore.ViewState viewState = draw.mViewState; 6898 boolean isPictureAfterFirstLayout = viewState != null; 6899 if (isPictureAfterFirstLayout) { 6900 // Reset the last sent data here since dealing with new page. 6901 mLastWidthSent = 0; 6902 mZoomManager.onFirstLayout(draw); 6903 if (!mDrawHistory) { 6904 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 6905 // As we are on a new page, remove the WebTextView. This 6906 // is necessary for page loads driven by webkit, and in 6907 // particular when the user was on a password field, so 6908 // the WebTextView was visible. 6909 clearTextEntry(); 6910 } 6911 } 6912 6913 // We update the layout (i.e. request a layout from the 6914 // view system) if the last view size that we sent to 6915 // WebCore matches the view size of the picture we just 6916 // received in the fixed dimension. 6917 final boolean updateLayout = viewSize.x == mLastWidthSent 6918 && viewSize.y == mLastHeightSent; 6919 recordNewContentSize(draw.mContentSize.x, 6920 draw.mContentSize.y, updateLayout); 6921 if (DebugFlags.WEB_VIEW) { 6922 Rect b = draw.mInvalRegion.getBounds(); 6923 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6924 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6925 } 6926 invalidateContentRect(draw.mInvalRegion.getBounds()); 6927 6928 if (mPictureListener != null) { 6929 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6930 } 6931 6932 // update the zoom information based on the new picture 6933 mZoomManager.onNewPicture(draw); 6934 6935 if (draw.mFocusSizeChanged && inEditingMode()) { 6936 mFocusSizeChanged = true; 6937 } 6938 if (isPictureAfterFirstLayout) { 6939 mViewManager.postReadyToDrawAll(); 6940 } 6941 break; 6942 } 6943 case WEBCORE_INITIALIZED_MSG_ID: 6944 // nativeCreate sets mNativeClass to a non-zero value 6945 nativeCreate(msg.arg1); 6946 break; 6947 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6948 // Make sure that the textfield is currently focused 6949 // and representing the same node as the pointer. 6950 if (inEditingMode() && 6951 mWebTextView.isSameTextField(msg.arg1)) { 6952 if (msg.getData().getBoolean("password")) { 6953 Spannable text = (Spannable) mWebTextView.getText(); 6954 int start = Selection.getSelectionStart(text); 6955 int end = Selection.getSelectionEnd(text); 6956 mWebTextView.setInPassword(true); 6957 // Restore the selection, which may have been 6958 // ruined by setInPassword. 6959 Spannable pword = 6960 (Spannable) mWebTextView.getText(); 6961 Selection.setSelection(pword, start, end); 6962 // If the text entry has created more events, ignore 6963 // this one. 6964 } else if (msg.arg2 == mTextGeneration) { 6965 String text = (String) msg.obj; 6966 if (null == text) { 6967 text = ""; 6968 } 6969 mWebTextView.setTextAndKeepSelection(text); 6970 } 6971 } 6972 break; 6973 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6974 displaySoftKeyboard(true); 6975 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 6976 case UPDATE_TEXT_SELECTION_MSG_ID: 6977 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6978 (WebViewCore.TextSelectionData) msg.obj); 6979 break; 6980 case FORM_DID_BLUR: 6981 if (inEditingMode() 6982 && mWebTextView.isSameTextField(msg.arg1)) { 6983 hideSoftKeyboard(); 6984 } 6985 break; 6986 case RETURN_LABEL: 6987 if (inEditingMode() 6988 && mWebTextView.isSameTextField(msg.arg1)) { 6989 mWebTextView.setHint((String) msg.obj); 6990 InputMethodManager imm 6991 = InputMethodManager.peekInstance(); 6992 // The hint is propagated to the IME in 6993 // onCreateInputConnection. If the IME is already 6994 // active, restart it so that its hint text is updated. 6995 if (imm != null && imm.isActive(mWebTextView)) { 6996 imm.restartInput(mWebTextView); 6997 } 6998 } 6999 break; 7000 case UNHANDLED_NAV_KEY: 7001 navHandledKey(msg.arg1, 1, false, 0); 7002 break; 7003 case UPDATE_TEXT_ENTRY_MSG_ID: 7004 // this is sent after finishing resize in WebViewCore. Make 7005 // sure the text edit box is still on the screen. 7006 if (inEditingMode() && nativeCursorIsTextInput()) { 7007 mWebTextView.bringIntoView(); 7008 rebuildWebTextView(); 7009 } 7010 break; 7011 case CLEAR_TEXT_ENTRY: 7012 clearTextEntry(); 7013 break; 7014 case INVAL_RECT_MSG_ID: { 7015 Rect r = (Rect)msg.obj; 7016 if (r == null) { 7017 invalidate(); 7018 } else { 7019 // we need to scale r from content into view coords, 7020 // which viewInvalidate() does for us 7021 viewInvalidate(r.left, r.top, r.right, r.bottom); 7022 } 7023 break; 7024 } 7025 case REQUEST_FORM_DATA: 7026 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7027 if (mWebTextView.isSameTextField(msg.arg1)) { 7028 mWebTextView.setAdapterCustom(adapter); 7029 } 7030 break; 7031 case RESUME_WEBCORE_PRIORITY: 7032 WebViewCore.resumePriority(); 7033 WebViewCore.resumeUpdatePicture(mWebViewCore); 7034 break; 7035 7036 case LONG_PRESS_CENTER: 7037 // as this is shared by keydown and trackballdown, reset all 7038 // the states 7039 mGotCenterDown = false; 7040 mTrackballDown = false; 7041 performLongClick(); 7042 break; 7043 7044 case WEBCORE_NEED_TOUCH_EVENTS: 7045 mForwardTouchEvents = (msg.arg1 != 0); 7046 break; 7047 7048 case PREVENT_TOUCH_ID: 7049 if (inFullScreenMode()) { 7050 break; 7051 } 7052 if (msg.obj == null) { 7053 if (msg.arg1 == MotionEvent.ACTION_DOWN 7054 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7055 // if prevent default is called from WebCore, UI 7056 // will not handle the rest of the touch events any 7057 // more. 7058 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7059 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7060 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7061 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7062 // the return for the first ACTION_MOVE will decide 7063 // whether UI will handle touch or not. Currently no 7064 // support for alternating prevent default 7065 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7066 : PREVENT_DEFAULT_NO; 7067 } 7068 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7069 mTouchHighlightRegion.setEmpty(); 7070 } 7071 } else if (msg.arg2 == 0) { 7072 // prevent default is not called in WebCore, so the 7073 // message needs to be reprocessed in UI 7074 TouchEventData ted = (TouchEventData) msg.obj; 7075 switch (ted.mAction) { 7076 case MotionEvent.ACTION_DOWN: 7077 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 7078 - mScrollX; 7079 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 7080 - mScrollY; 7081 mDeferTouchMode = TOUCH_INIT_MODE; 7082 break; 7083 case MotionEvent.ACTION_MOVE: { 7084 // no snapping in defer process 7085 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 7086 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 7087 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7088 mDeferTouchMode = TOUCH_DRAG_MODE; 7089 mLastDeferTouchX = x; 7090 mLastDeferTouchY = y; 7091 startScrollingLayer(x, y); 7092 startDrag(); 7093 } 7094 int deltaX = pinLocX((int) (mScrollX 7095 + mLastDeferTouchX - x)) 7096 - mScrollX; 7097 int deltaY = pinLocY((int) (mScrollY 7098 + mLastDeferTouchY - y)) 7099 - mScrollY; 7100 doDrag(deltaX, deltaY); 7101 if (deltaX != 0) mLastDeferTouchX = x; 7102 if (deltaY != 0) mLastDeferTouchY = y; 7103 break; 7104 } 7105 case MotionEvent.ACTION_UP: 7106 case MotionEvent.ACTION_CANCEL: 7107 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7108 // no fling in defer process 7109 mScroller.springBack(mScrollX, mScrollY, 0, 7110 computeMaxScrollX(), 0, 7111 computeMaxScrollY()); 7112 invalidate(); 7113 WebViewCore.resumePriority(); 7114 WebViewCore.resumeUpdatePicture(mWebViewCore); 7115 } 7116 mDeferTouchMode = TOUCH_DONE_MODE; 7117 break; 7118 case WebViewCore.ACTION_DOUBLETAP: 7119 // doDoubleTap() needs mLastTouchX/Y as anchor 7120 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 7121 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 7122 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7123 mDeferTouchMode = TOUCH_DONE_MODE; 7124 break; 7125 case WebViewCore.ACTION_LONGPRESS: 7126 HitTestResult hitTest = getHitTestResult(); 7127 if (hitTest != null && hitTest.mType 7128 != HitTestResult.UNKNOWN_TYPE) { 7129 performLongClick(); 7130 } 7131 mDeferTouchMode = TOUCH_DONE_MODE; 7132 break; 7133 } 7134 } 7135 break; 7136 7137 case REQUEST_KEYBOARD: 7138 if (msg.arg1 == 0) { 7139 hideSoftKeyboard(); 7140 } else { 7141 displaySoftKeyboard(false); 7142 } 7143 break; 7144 7145 case FIND_AGAIN: 7146 // Ignore if find has been dismissed. 7147 if (mFindIsUp && mFindCallback != null) { 7148 mFindCallback.findAll(); 7149 } 7150 break; 7151 7152 case DRAG_HELD_MOTIONLESS: 7153 mHeldMotionless = MOTIONLESS_TRUE; 7154 invalidate(); 7155 // fall through to keep scrollbars awake 7156 7157 case AWAKEN_SCROLL_BARS: 7158 if (mTouchMode == TOUCH_DRAG_MODE 7159 && mHeldMotionless == MOTIONLESS_TRUE) { 7160 awakenScrollBars(ViewConfiguration 7161 .getScrollDefaultDelay(), false); 7162 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7163 .obtainMessage(AWAKEN_SCROLL_BARS), 7164 ViewConfiguration.getScrollDefaultDelay()); 7165 } 7166 break; 7167 7168 case DO_MOTION_UP: 7169 doMotionUp(msg.arg1, msg.arg2); 7170 break; 7171 7172 case SHOW_FULLSCREEN: { 7173 View view = (View) msg.obj; 7174 int npp = msg.arg1; 7175 7176 if (inFullScreenMode()) { 7177 Log.w(LOGTAG, "Should not have another full screen."); 7178 dismissFullScreenMode(); 7179 } 7180 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7181 mFullScreenHolder.setContentView(view); 7182 mFullScreenHolder.setCancelable(false); 7183 mFullScreenHolder.setCanceledOnTouchOutside(false); 7184 mFullScreenHolder.show(); 7185 7186 break; 7187 } 7188 case HIDE_FULLSCREEN: 7189 dismissFullScreenMode(); 7190 break; 7191 7192 case DOM_FOCUS_CHANGED: 7193 if (inEditingMode()) { 7194 nativeClearCursor(); 7195 rebuildWebTextView(); 7196 } 7197 break; 7198 7199 case SHOW_RECT_MSG_ID: { 7200 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7201 int x = mScrollX; 7202 int left = contentToViewX(data.mLeft); 7203 int width = contentToViewDimension(data.mWidth); 7204 int maxWidth = contentToViewDimension(data.mContentWidth); 7205 int viewWidth = getViewWidth(); 7206 if (width < viewWidth) { 7207 // center align 7208 x += left + width / 2 - mScrollX - viewWidth / 2; 7209 } else { 7210 x += (int) (left + data.mXPercentInDoc * width 7211 - mScrollX - data.mXPercentInView * viewWidth); 7212 } 7213 if (DebugFlags.WEB_VIEW) { 7214 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7215 width + ",maxWidth=" + maxWidth + 7216 ",viewWidth=" + viewWidth + ",x=" 7217 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7218 ",xPercentInView=" + data.mXPercentInView+ ")"); 7219 } 7220 // use the passing content width to cap x as the current 7221 // mContentWidth may not be updated yet 7222 x = Math.max(0, 7223 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7224 int top = contentToViewY(data.mTop); 7225 int height = contentToViewDimension(data.mHeight); 7226 int maxHeight = contentToViewDimension(data.mContentHeight); 7227 int viewHeight = getViewHeight(); 7228 int y = (int) (top + data.mYPercentInDoc * height - 7229 data.mYPercentInView * viewHeight); 7230 if (DebugFlags.WEB_VIEW) { 7231 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7232 height + ",maxHeight=" + maxHeight + 7233 ",viewHeight=" + viewHeight + ",y=" 7234 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7235 ",yPercentInView=" + data.mYPercentInView+ ")"); 7236 } 7237 // use the passing content height to cap y as the current 7238 // mContentHeight may not be updated yet 7239 y = Math.max(0, 7240 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7241 // We need to take into account the visible title height 7242 // when scrolling since y is an absolute view position. 7243 y = Math.max(0, y - getVisibleTitleHeight()); 7244 scrollTo(x, y); 7245 } 7246 break; 7247 7248 case CENTER_FIT_RECT: 7249 Rect r = (Rect)msg.obj; 7250 centerFitRect(r.left, r.top, r.width(), r.height()); 7251 break; 7252 7253 case SET_SCROLLBAR_MODES: 7254 mHorizontalScrollBarMode = msg.arg1; 7255 mVerticalScrollBarMode = msg.arg2; 7256 break; 7257 7258 case SELECTION_STRING_CHANGED: 7259 if (mAccessibilityInjector != null) { 7260 String selectionString = (String) msg.obj; 7261 mAccessibilityInjector.onSelectionStringChange(selectionString); 7262 } 7263 break; 7264 7265 case SET_TOUCH_HIGHLIGHT_RECTS: 7266 invalidate(mTouchHighlightRegion.getBounds()); 7267 mTouchHighlightRegion.setEmpty(); 7268 if (msg.obj != null) { 7269 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7270 for (Rect rect : rects) { 7271 Rect viewRect = contentToViewRect(rect); 7272 // some sites, like stories in nytimes.com, set 7273 // mouse event handler in the top div. It is not 7274 // user friendly to highlight the div if it covers 7275 // more than half of the screen. 7276 if (viewRect.width() < getWidth() >> 1 7277 || viewRect.height() < getHeight() >> 1) { 7278 mTouchHighlightRegion.union(viewRect); 7279 invalidate(viewRect); 7280 } else { 7281 Log.w(LOGTAG, "Skip the huge selection rect:" 7282 + viewRect); 7283 } 7284 } 7285 } 7286 break; 7287 7288 case SAVE_WEBARCHIVE_FINISHED: 7289 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7290 if (saveMessage.mCallback != null) { 7291 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7292 } 7293 break; 7294 7295 case SET_AUTOFILLABLE: 7296 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7297 if (mWebTextView != null) { 7298 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7299 rebuildWebTextView(); 7300 } 7301 break; 7302 7303 case AUTOFILL_COMPLETE: 7304 if (mWebTextView != null) { 7305 // Clear the WebTextView adapter when AutoFill finishes 7306 // so that the drop down gets cleared. 7307 mWebTextView.setAdapterCustom(null); 7308 } 7309 break; 7310 7311 default: 7312 super.handleMessage(msg); 7313 break; 7314 } 7315 } 7316 } 7317 7318 /** 7319 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7320 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7321 */ 7322 private void updateTextSelectionFromMessage(int nodePointer, 7323 int textGeneration, WebViewCore.TextSelectionData data) { 7324 if (inEditingMode() 7325 && mWebTextView.isSameTextField(nodePointer) 7326 && textGeneration == mTextGeneration) { 7327 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7328 } 7329 } 7330 7331 // Class used to use a dropdown for a <select> element 7332 private class InvokeListBox implements Runnable { 7333 // Whether the listbox allows multiple selection. 7334 private boolean mMultiple; 7335 // Passed in to a list with multiple selection to tell 7336 // which items are selected. 7337 private int[] mSelectedArray; 7338 // Passed in to a list with single selection to tell 7339 // where the initial selection is. 7340 private int mSelection; 7341 7342 private Container[] mContainers; 7343 7344 // Need these to provide stable ids to my ArrayAdapter, 7345 // which normally does not have stable ids. (Bug 1250098) 7346 private class Container extends Object { 7347 /** 7348 * Possible values for mEnabled. Keep in sync with OptionStatus in 7349 * WebViewCore.cpp 7350 */ 7351 final static int OPTGROUP = -1; 7352 final static int OPTION_DISABLED = 0; 7353 final static int OPTION_ENABLED = 1; 7354 7355 String mString; 7356 int mEnabled; 7357 int mId; 7358 7359 public String toString() { 7360 return mString; 7361 } 7362 } 7363 7364 /** 7365 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7366 * and allow filtering. 7367 */ 7368 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7369 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7370 super(context, 7371 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7372 com.android.internal.R.layout.select_dialog_singlechoice, 7373 objects); 7374 } 7375 7376 @Override 7377 public View getView(int position, View convertView, 7378 ViewGroup parent) { 7379 // Always pass in null so that we will get a new CheckedTextView 7380 // Otherwise, an item which was previously used as an <optgroup> 7381 // element (i.e. has no check), could get used as an <option> 7382 // element, which needs a checkbox/radio, but it would not have 7383 // one. 7384 convertView = super.getView(position, null, parent); 7385 Container c = item(position); 7386 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7387 // ListView does not draw dividers between disabled and 7388 // enabled elements. Use a LinearLayout to provide dividers 7389 LinearLayout layout = new LinearLayout(mContext); 7390 layout.setOrientation(LinearLayout.VERTICAL); 7391 if (position > 0) { 7392 View dividerTop = new View(mContext); 7393 dividerTop.setBackgroundResource( 7394 android.R.drawable.divider_horizontal_bright); 7395 layout.addView(dividerTop); 7396 } 7397 7398 if (Container.OPTGROUP == c.mEnabled) { 7399 // Currently select_dialog_multichoice and 7400 // select_dialog_singlechoice are CheckedTextViews. If 7401 // that changes, the class cast will no longer be valid. 7402 Assert.assertTrue( 7403 convertView instanceof CheckedTextView); 7404 ((CheckedTextView) convertView).setCheckMarkDrawable( 7405 null); 7406 } else { 7407 // c.mEnabled == Container.OPTION_DISABLED 7408 // Draw the disabled element in a disabled state. 7409 convertView.setEnabled(false); 7410 } 7411 7412 layout.addView(convertView); 7413 if (position < getCount() - 1) { 7414 View dividerBottom = new View(mContext); 7415 dividerBottom.setBackgroundResource( 7416 android.R.drawable.divider_horizontal_bright); 7417 layout.addView(dividerBottom); 7418 } 7419 return layout; 7420 } 7421 return convertView; 7422 } 7423 7424 @Override 7425 public boolean hasStableIds() { 7426 // AdapterView's onChanged method uses this to determine whether 7427 // to restore the old state. Return false so that the old (out 7428 // of date) state does not replace the new, valid state. 7429 return false; 7430 } 7431 7432 private Container item(int position) { 7433 if (position < 0 || position >= getCount()) { 7434 return null; 7435 } 7436 return (Container) getItem(position); 7437 } 7438 7439 @Override 7440 public long getItemId(int position) { 7441 Container item = item(position); 7442 if (item == null) { 7443 return -1; 7444 } 7445 return item.mId; 7446 } 7447 7448 @Override 7449 public boolean areAllItemsEnabled() { 7450 return false; 7451 } 7452 7453 @Override 7454 public boolean isEnabled(int position) { 7455 Container item = item(position); 7456 if (item == null) { 7457 return false; 7458 } 7459 return Container.OPTION_ENABLED == item.mEnabled; 7460 } 7461 } 7462 7463 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7464 mMultiple = true; 7465 mSelectedArray = selected; 7466 7467 int length = array.length; 7468 mContainers = new Container[length]; 7469 for (int i = 0; i < length; i++) { 7470 mContainers[i] = new Container(); 7471 mContainers[i].mString = array[i]; 7472 mContainers[i].mEnabled = enabled[i]; 7473 mContainers[i].mId = i; 7474 } 7475 } 7476 7477 private InvokeListBox(String[] array, int[] enabled, int selection) { 7478 mSelection = selection; 7479 mMultiple = false; 7480 7481 int length = array.length; 7482 mContainers = new Container[length]; 7483 for (int i = 0; i < length; i++) { 7484 mContainers[i] = new Container(); 7485 mContainers[i].mString = array[i]; 7486 mContainers[i].mEnabled = enabled[i]; 7487 mContainers[i].mId = i; 7488 } 7489 } 7490 7491 /* 7492 * Whenever the data set changes due to filtering, this class ensures 7493 * that the checked item remains checked. 7494 */ 7495 private class SingleDataSetObserver extends DataSetObserver { 7496 private long mCheckedId; 7497 private ListView mListView; 7498 private Adapter mAdapter; 7499 7500 /* 7501 * Create a new observer. 7502 * @param id The ID of the item to keep checked. 7503 * @param l ListView for getting and clearing the checked states 7504 * @param a Adapter for getting the IDs 7505 */ 7506 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7507 mCheckedId = id; 7508 mListView = l; 7509 mAdapter = a; 7510 } 7511 7512 public void onChanged() { 7513 // The filter may have changed which item is checked. Find the 7514 // item that the ListView thinks is checked. 7515 int position = mListView.getCheckedItemPosition(); 7516 long id = mAdapter.getItemId(position); 7517 if (mCheckedId != id) { 7518 // Clear the ListView's idea of the checked item, since 7519 // it is incorrect 7520 mListView.clearChoices(); 7521 // Search for mCheckedId. If it is in the filtered list, 7522 // mark it as checked 7523 int count = mAdapter.getCount(); 7524 for (int i = 0; i < count; i++) { 7525 if (mAdapter.getItemId(i) == mCheckedId) { 7526 mListView.setItemChecked(i, true); 7527 break; 7528 } 7529 } 7530 } 7531 } 7532 7533 public void onInvalidate() {} 7534 } 7535 7536 public void run() { 7537 final ListView listView = (ListView) LayoutInflater.from(mContext) 7538 .inflate(com.android.internal.R.layout.select_dialog, null); 7539 final MyArrayListAdapter adapter = new 7540 MyArrayListAdapter(mContext, mContainers, mMultiple); 7541 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7542 .setView(listView).setCancelable(true) 7543 .setInverseBackgroundForced(true); 7544 7545 if (mMultiple) { 7546 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7547 public void onClick(DialogInterface dialog, int which) { 7548 mWebViewCore.sendMessage( 7549 EventHub.LISTBOX_CHOICES, 7550 adapter.getCount(), 0, 7551 listView.getCheckedItemPositions()); 7552 }}); 7553 b.setNegativeButton(android.R.string.cancel, 7554 new DialogInterface.OnClickListener() { 7555 public void onClick(DialogInterface dialog, int which) { 7556 mWebViewCore.sendMessage( 7557 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7558 }}); 7559 } 7560 mListBoxDialog = b.create(); 7561 listView.setAdapter(adapter); 7562 listView.setFocusableInTouchMode(true); 7563 // There is a bug (1250103) where the checks in a ListView with 7564 // multiple items selected are associated with the positions, not 7565 // the ids, so the items do not properly retain their checks when 7566 // filtered. Do not allow filtering on multiple lists until 7567 // that bug is fixed. 7568 7569 listView.setTextFilterEnabled(!mMultiple); 7570 if (mMultiple) { 7571 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7572 int length = mSelectedArray.length; 7573 for (int i = 0; i < length; i++) { 7574 listView.setItemChecked(mSelectedArray[i], true); 7575 } 7576 } else { 7577 listView.setOnItemClickListener(new OnItemClickListener() { 7578 public void onItemClick(AdapterView parent, View v, 7579 int position, long id) { 7580 // Rather than sending the message right away, send it 7581 // after the page regains focus. 7582 mListBoxMessage = Message.obtain(null, 7583 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 7584 mListBoxDialog.dismiss(); 7585 mListBoxDialog = null; 7586 } 7587 }); 7588 if (mSelection != -1) { 7589 listView.setSelection(mSelection); 7590 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7591 listView.setItemChecked(mSelection, true); 7592 DataSetObserver observer = new SingleDataSetObserver( 7593 adapter.getItemId(mSelection), listView, adapter); 7594 adapter.registerDataSetObserver(observer); 7595 } 7596 } 7597 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7598 public void onCancel(DialogInterface dialog) { 7599 mWebViewCore.sendMessage( 7600 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7601 mListBoxDialog = null; 7602 } 7603 }); 7604 mListBoxDialog.show(); 7605 } 7606 } 7607 7608 private Message mListBoxMessage; 7609 7610 /* 7611 * Request a dropdown menu for a listbox with multiple selection. 7612 * 7613 * @param array Labels for the listbox. 7614 * @param enabledArray State for each element in the list. See static 7615 * integers in Container class. 7616 * @param selectedArray Which positions are initally selected. 7617 */ 7618 void requestListBox(String[] array, int[] enabledArray, int[] 7619 selectedArray) { 7620 mPrivateHandler.post( 7621 new InvokeListBox(array, enabledArray, selectedArray)); 7622 } 7623 7624 /* 7625 * Request a dropdown menu for a listbox with single selection or a single 7626 * <select> element. 7627 * 7628 * @param array Labels for the listbox. 7629 * @param enabledArray State for each element in the list. See static 7630 * integers in Container class. 7631 * @param selection Which position is initally selected. 7632 */ 7633 void requestListBox(String[] array, int[] enabledArray, int selection) { 7634 mPrivateHandler.post( 7635 new InvokeListBox(array, enabledArray, selection)); 7636 } 7637 7638 // called by JNI 7639 private void sendMoveFocus(int frame, int node) { 7640 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7641 new WebViewCore.CursorData(frame, node, 0, 0)); 7642 } 7643 7644 // called by JNI 7645 private void sendMoveMouse(int frame, int node, int x, int y) { 7646 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7647 new WebViewCore.CursorData(frame, node, x, y)); 7648 } 7649 7650 /* 7651 * Send a mouse move event to the webcore thread. 7652 * 7653 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7654 * which wants key events, but it is not the focus. This 7655 * will make the visual appear as though nothing is in 7656 * focus. Remove the WebTextView, if present, and stop 7657 * drawing the blinking caret. 7658 * called by JNI 7659 */ 7660 private void sendMoveMouseIfLatest(boolean removeFocus) { 7661 if (removeFocus) { 7662 clearTextEntry(); 7663 } 7664 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7665 cursorData()); 7666 } 7667 7668 // called by JNI 7669 private void sendMotionUp(int touchGeneration, 7670 int frame, int node, int x, int y) { 7671 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7672 touchUpData.mMoveGeneration = touchGeneration; 7673 touchUpData.mFrame = frame; 7674 touchUpData.mNode = node; 7675 touchUpData.mX = x; 7676 touchUpData.mY = y; 7677 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7678 } 7679 7680 7681 private int getScaledMaxXScroll() { 7682 int width; 7683 if (mHeightCanMeasure == false) { 7684 width = getViewWidth() / 4; 7685 } else { 7686 Rect visRect = new Rect(); 7687 calcOurVisibleRect(visRect); 7688 width = visRect.width() / 2; 7689 } 7690 // FIXME the divisor should be retrieved from somewhere 7691 return viewToContentX(width); 7692 } 7693 7694 private int getScaledMaxYScroll() { 7695 int height; 7696 if (mHeightCanMeasure == false) { 7697 height = getViewHeight() / 4; 7698 } else { 7699 Rect visRect = new Rect(); 7700 calcOurVisibleRect(visRect); 7701 height = visRect.height() / 2; 7702 } 7703 // FIXME the divisor should be retrieved from somewhere 7704 // the closest thing today is hard-coded into ScrollView.java 7705 // (from ScrollView.java, line 363) int maxJump = height/2; 7706 return Math.round(height * mZoomManager.getInvScale()); 7707 } 7708 7709 /** 7710 * Called by JNI to invalidate view 7711 */ 7712 private void viewInvalidate() { 7713 invalidate(); 7714 } 7715 7716 /** 7717 * Pass the key directly to the page. This assumes that 7718 * nativePageShouldHandleShiftAndArrows() returned true. 7719 */ 7720 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 7721 int keyEventAction; 7722 int eventHubAction; 7723 if (down) { 7724 keyEventAction = KeyEvent.ACTION_DOWN; 7725 eventHubAction = EventHub.KEY_DOWN; 7726 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7727 } else { 7728 keyEventAction = KeyEvent.ACTION_UP; 7729 eventHubAction = EventHub.KEY_UP; 7730 } 7731 7732 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7733 1, (metaState & KeyEvent.META_SHIFT_ON) 7734 | (metaState & KeyEvent.META_ALT_ON) 7735 | (metaState & KeyEvent.META_SYM_ON) 7736 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 7737 mWebViewCore.sendMessage(eventHubAction, event); 7738 } 7739 7740 // return true if the key was handled 7741 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7742 long time) { 7743 if (mNativeClass == 0) { 7744 return false; 7745 } 7746 mInitialHitTestResult = null; 7747 mLastCursorTime = time; 7748 mLastCursorBounds = nativeGetCursorRingBounds(); 7749 boolean keyHandled 7750 = nativeMoveCursor(keyCode, count, noScroll) == false; 7751 if (DebugFlags.WEB_VIEW) { 7752 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7753 + " mLastCursorTime=" + mLastCursorTime 7754 + " handled=" + keyHandled); 7755 } 7756 if (keyHandled == false || mHeightCanMeasure == false) { 7757 return keyHandled; 7758 } 7759 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7760 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7761 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7762 Rect visRect = new Rect(); 7763 calcOurVisibleRect(visRect); 7764 Rect outset = new Rect(visRect); 7765 int maxXScroll = visRect.width() / 2; 7766 int maxYScroll = visRect.height() / 2; 7767 outset.inset(-maxXScroll, -maxYScroll); 7768 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7769 return keyHandled; 7770 } 7771 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7772 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7773 maxXScroll); 7774 if (maxH > 0) { 7775 pinScrollBy(maxH, 0, true, 0); 7776 } else { 7777 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7778 -maxXScroll); 7779 if (maxH < 0) { 7780 pinScrollBy(maxH, 0, true, 0); 7781 } 7782 } 7783 if (mLastCursorBounds.isEmpty()) return keyHandled; 7784 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7785 return keyHandled; 7786 } 7787 if (DebugFlags.WEB_VIEW) { 7788 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7789 + contentCursorRingBounds); 7790 } 7791 requestRectangleOnScreen(viewCursorRingBounds); 7792 mUserScroll = true; 7793 return keyHandled; 7794 } 7795 7796 /** 7797 * @return If the page should receive Shift and arrows. 7798 */ 7799 private boolean pageShouldHandleShiftAndArrows() { 7800 // TODO: Maybe the injected script should announce its presence in 7801 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 7802 // will check that as one of the conditions it looks for 7803 return (nativePageShouldHandleShiftAndArrows() || mAccessibilityScriptInjected); 7804 } 7805 7806 /** 7807 * Set the background color. It's white by default. Pass 7808 * zero to make the view transparent. 7809 * @param color the ARGB color described by Color.java 7810 */ 7811 public void setBackgroundColor(int color) { 7812 mBackgroundColor = color; 7813 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7814 } 7815 7816 public void debugDump() { 7817 nativeDebugDump(); 7818 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7819 } 7820 7821 /** 7822 * Draw the HTML page into the specified canvas. This call ignores any 7823 * view-specific zoom, scroll offset, or other changes. It does not draw 7824 * any view-specific chrome, such as progress or URL bars. 7825 * 7826 * @hide only needs to be accessible to Browser and testing 7827 */ 7828 public void drawPage(Canvas canvas) { 7829 nativeDraw(canvas, 0, 0, false); 7830 } 7831 7832 /** 7833 * Set the time to wait between passing touches to WebCore. See also the 7834 * TOUCH_SENT_INTERVAL member for further discussion. 7835 * 7836 * @hide This is only used by the DRT test application. 7837 */ 7838 public void setTouchInterval(int interval) { 7839 mCurrentTouchInterval = interval; 7840 } 7841 7842 /** 7843 * Toggle whether multi touch events should be sent to webkit 7844 * no matter if UI wants to handle it first. 7845 * 7846 * @hide This is only used by the webkit layout test. 7847 */ 7848 public void setDeferMultiTouch(boolean value) { 7849 mDeferMultitouch = value; 7850 Log.v(LOGTAG, "set mDeferMultitouch to " + value); 7851 } 7852 7853 /** 7854 * Update our cache with updatedText. 7855 * @param updatedText The new text to put in our cache. 7856 */ 7857 /* package */ void updateCachedTextfield(String updatedText) { 7858 // Also place our generation number so that when we look at the cache 7859 // we recognize that it is up to date. 7860 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7861 } 7862 7863 /*package*/ void autoFillForm(int autoFillQueryId) { 7864 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 7865 } 7866 7867 /* package */ ViewManager getViewManager() { 7868 return mViewManager; 7869 } 7870 7871 private native int nativeCacheHitFramePointer(); 7872 private native Rect nativeCacheHitNodeBounds(); 7873 private native int nativeCacheHitNodePointer(); 7874 /* package */ native void nativeClearCursor(); 7875 private native void nativeCreate(int ptr); 7876 private native int nativeCursorFramePointer(); 7877 private native Rect nativeCursorNodeBounds(); 7878 private native int nativeCursorNodePointer(); 7879 /* package */ native boolean nativeCursorMatchesFocus(); 7880 private native boolean nativeCursorIntersects(Rect visibleRect); 7881 private native boolean nativeCursorIsAnchor(); 7882 private native boolean nativeCursorIsTextInput(); 7883 private native Point nativeCursorPosition(); 7884 private native String nativeCursorText(); 7885 /** 7886 * Returns true if the native cursor node says it wants to handle key events 7887 * (ala plugins). This can only be called if mNativeClass is non-zero! 7888 */ 7889 private native boolean nativeCursorWantsKeyEvents(); 7890 private native void nativeDebugDump(); 7891 private native void nativeDestroy(); 7892 7893 /** 7894 * Draw the picture set with a background color and extra. If 7895 * "splitIfNeeded" is true and the return value is not 0, the return value 7896 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 7897 * native allocation can be freed. 7898 */ 7899 private native int nativeDraw(Canvas canvas, int color, int extra, 7900 boolean splitIfNeeded); 7901 private native void nativeDumpDisplayTree(String urlOrNull); 7902 private native boolean nativeEvaluateLayersAnimations(); 7903 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 7904 private native void nativeExtendSelection(int x, int y); 7905 private native int nativeFindAll(String findLower, String findUpper, 7906 boolean sameAsLastSearch); 7907 private native void nativeFindNext(boolean forward); 7908 /* package */ native int nativeFocusCandidateFramePointer(); 7909 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7910 /* package */ native boolean nativeFocusCandidateIsPassword(); 7911 private native boolean nativeFocusCandidateIsRtlText(); 7912 private native boolean nativeFocusCandidateIsTextInput(); 7913 /* package */ native int nativeFocusCandidateMaxLength(); 7914 /* package */ native String nativeFocusCandidateName(); 7915 private native Rect nativeFocusCandidateNodeBounds(); 7916 /** 7917 * @return A Rect with left, top, right, bottom set to the corresponding 7918 * padding values in the focus candidate, if it is a textfield/textarea with 7919 * a style. Otherwise return null. This is not actually a rectangle; Rect 7920 * is being used to pass four integers. 7921 */ 7922 private native Rect nativeFocusCandidatePaddingRect(); 7923 /* package */ native int nativeFocusCandidatePointer(); 7924 private native String nativeFocusCandidateText(); 7925 /* package */ native float nativeFocusCandidateTextSize(); 7926 /* package */ native int nativeFocusCandidateLineHeight(); 7927 /** 7928 * Returns an integer corresponding to WebView.cpp::type. 7929 * See WebTextView.setType() 7930 */ 7931 private native int nativeFocusCandidateType(); 7932 private native boolean nativeFocusIsPlugin(); 7933 private native Rect nativeFocusNodeBounds(); 7934 /* package */ native int nativeFocusNodePointer(); 7935 private native Rect nativeGetCursorRingBounds(); 7936 private native String nativeGetSelection(); 7937 private native boolean nativeHasCursorNode(); 7938 private native boolean nativeHasFocusNode(); 7939 private native void nativeHideCursor(); 7940 private native boolean nativeHitSelection(int x, int y); 7941 private native String nativeImageURI(int x, int y); 7942 private native void nativeInstrumentReport(); 7943 private native Rect nativeLayerBounds(int layer); 7944 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7945 // return true if the page has been scrolled 7946 private native boolean nativeMotionUp(int x, int y, int slop); 7947 // returns false if it handled the key 7948 private native boolean nativeMoveCursor(int keyCode, int count, 7949 boolean noScroll); 7950 private native int nativeMoveGeneration(); 7951 private native void nativeMoveSelection(int x, int y); 7952 /** 7953 * @return true if the page should get the shift and arrow keys, rather 7954 * than select text/navigation. 7955 * 7956 * If the focus is a plugin, or if the focus and cursor match and are 7957 * a contentEditable element, then the page should handle these keys. 7958 */ 7959 private native boolean nativePageShouldHandleShiftAndArrows(); 7960 private native boolean nativePointInNavCache(int x, int y, int slop); 7961 // Like many other of our native methods, you must make sure that 7962 // mNativeClass is not null before calling this method. 7963 private native void nativeRecordButtons(boolean focused, 7964 boolean pressed, boolean invalidate); 7965 private native void nativeResetSelection(); 7966 private native void nativeSelectAll(); 7967 private native void nativeSelectBestAt(Rect rect); 7968 private native int nativeSelectionX(); 7969 private native int nativeSelectionY(); 7970 private native int nativeFindIndex(); 7971 private native void nativeSetExtendSelection(); 7972 private native void nativeSetFindIsEmpty(); 7973 private native void nativeSetFindIsUp(boolean isUp); 7974 private native void nativeSetHeightCanMeasure(boolean measure); 7975 private native void nativeSetBaseLayer(int layer, Rect invalRect); 7976 private native void nativeShowCursorTimed(); 7977 private native void nativeReplaceBaseContent(int content); 7978 private native void nativeCopyBaseContentToPicture(Picture pict); 7979 private native boolean nativeHasContent(); 7980 private native void nativeSetSelectionPointer(boolean set, 7981 float scale, int x, int y); 7982 private native boolean nativeStartSelection(int x, int y); 7983 private native Rect nativeSubtractLayers(Rect content); 7984 private native int nativeTextGeneration(); 7985 // Never call this version except by updateCachedTextfield(String) - 7986 // we always want to pass in our generation number. 7987 private native void nativeUpdateCachedTextfield(String updatedText, 7988 int generation); 7989 private native boolean nativeWordSelection(int x, int y); 7990 // return NO_LEFTEDGE means failure. 7991 static final int NO_LEFTEDGE = -1; 7992 native int nativeGetBlockLeftEdge(int x, int y, float scale); 7993 7994 // Returns a pointer to the scrollable LayerAndroid at the given point. 7995 private native int nativeScrollableLayer(int x, int y, Rect scrollRect); 7996 private native boolean nativeScrollLayer(int layer, int dx, int dy); 7997} 7998