WebView.java revision fe38b7b79325782f682365ec9d1b8fe2932eec78
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.Context; 24import android.content.DialogInterface; 25import android.content.DialogInterface.OnCancelListener; 26import android.content.Intent; 27import android.content.IntentFilter; 28import android.content.pm.PackageInfo; 29import android.content.pm.PackageManager; 30import android.content.res.Configuration; 31import android.database.DataSetObserver; 32import android.graphics.Bitmap; 33import android.graphics.BitmapFactory; 34import android.graphics.BitmapShader; 35import android.graphics.Canvas; 36import android.graphics.Color; 37import android.graphics.CornerPathEffect; 38import android.graphics.DrawFilter; 39import android.graphics.Paint; 40import android.graphics.PaintFlagsDrawFilter; 41import android.graphics.Picture; 42import android.graphics.Point; 43import android.graphics.Rect; 44import android.graphics.RectF; 45import android.graphics.Region; 46import android.graphics.Shader; 47import android.graphics.drawable.Drawable; 48import android.net.Proxy; 49import android.net.ProxyProperties; 50import android.net.Uri; 51import android.net.http.SslCertificate; 52import android.os.AsyncTask; 53import android.os.Bundle; 54import android.os.Handler; 55import android.os.Message; 56import android.provider.Settings; 57import android.speech.tts.TextToSpeech; 58import android.text.Selection; 59import android.text.Spannable; 60import android.util.AttributeSet; 61import android.util.EventLog; 62import android.util.Log; 63import android.view.Gravity; 64import android.view.HardwareCanvas; 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.LinearLayout; 92import android.widget.ListView; 93import android.widget.OverScroller; 94import android.widget.Toast; 95 96import java.io.File; 97import java.io.FileInputStream; 98import java.io.FileNotFoundException; 99import java.io.FileOutputStream; 100import java.net.URLDecoder; 101import java.util.ArrayList; 102import java.util.HashMap; 103import java.util.HashSet; 104import java.util.List; 105import java.util.Map; 106import java.util.Set; 107import java.util.regex.Matcher; 108import java.util.regex.Pattern; 109 110import junit.framework.Assert; 111 112/** 113 * <p>A View that displays web pages. This class is the basis upon which you 114 * can roll your own web browser or simply display some online content within your Activity. 115 * It uses the WebKit rendering engine to display 116 * web pages and includes methods to navigate forward and backward 117 * through a history, zoom in and out, perform text searches and more.</p> 118 * <p>To enable the built-in zoom, set 119 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 120 * (introduced in API version 3). 121 * <p>Note that, in order for your Activity to access the Internet and load web pages 122 * in a WebView, you must add the {@code INTERNET} permissions to your 123 * Android Manifest file:</p> 124 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 125 * 126 * <p>This must be a child of the <a 127 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 128 * element.</p> 129 * 130 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 131 * tutorial</a>.</p> 132 * 133 * <h3>Basic usage</h3> 134 * 135 * <p>By default, a WebView provides no browser-like widgets, does not 136 * enable JavaScript and web page errors are ignored. If your goal is only 137 * to display some HTML as a part of your UI, this is probably fine; 138 * the user won't need to interact with the web page beyond reading 139 * it, and the web page won't need to interact with the user. If you 140 * actually want a full-blown web browser, then you probably want to 141 * invoke the Browser application with a URL Intent rather than show it 142 * with a WebView. For example: 143 * <pre> 144 * Uri uri = Uri.parse("http://www.example.com"); 145 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 146 * startActivity(intent); 147 * </pre> 148 * <p>See {@link android.content.Intent} for more information.</p> 149 * 150 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 151 * or set the entire Activity window as a WebView during {@link 152 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 153 * <pre class="prettyprint"> 154 * WebView webview = new WebView(this); 155 * setContentView(webview); 156 * </pre> 157 * 158 * <p>Then load the desired web page:</p> 159 * <pre> 160 * // Simplest usage: note that an exception will NOT be thrown 161 * // if there is an error loading this page (see below). 162 * webview.loadUrl("http://slashdot.org/"); 163 * 164 * // OR, you can also load from an HTML string: 165 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 166 * webview.loadData(summary, "text/html", "utf-8"); 167 * // ... although note that there are restrictions on what this HTML can do. 168 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 169 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 170 * </pre> 171 * 172 * <p>A WebView has several customization points where you can add your 173 * own behavior. These are:</p> 174 * 175 * <ul> 176 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 177 * This class is called when something that might impact a 178 * browser UI happens, for instance, progress updates and 179 * JavaScript alerts are sent here (see <a 180 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 181 * </li> 182 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 183 * It will be called when things happen that impact the 184 * rendering of the content, eg, errors or form submissions. You 185 * can also intercept URL loading here (via {@link 186 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 187 * shouldOverrideUrlLoading()}).</li> 188 * <li>Modifying the {@link android.webkit.WebSettings}, such as 189 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 190 * setJavaScriptEnabled()}. </li> 191 * <li>Adding JavaScript-to-Java interfaces with the {@link 192 * android.webkit.WebView#addJavascriptInterface} method. 193 * This lets you bind Java objects into the WebView so they can be 194 * controlled from the web pages JavaScript.</li> 195 * </ul> 196 * 197 * <p>Here's a more complicated example, showing error handling, 198 * settings, and progress notification:</p> 199 * 200 * <pre class="prettyprint"> 201 * // Let's display the progress in the activity title bar, like the 202 * // browser app does. 203 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 204 * 205 * webview.getSettings().setJavaScriptEnabled(true); 206 * 207 * final Activity activity = this; 208 * webview.setWebChromeClient(new WebChromeClient() { 209 * public void onProgressChanged(WebView view, int progress) { 210 * // Activities and WebViews measure progress with different scales. 211 * // The progress meter will automatically disappear when we reach 100% 212 * activity.setProgress(progress * 1000); 213 * } 214 * }); 215 * webview.setWebViewClient(new WebViewClient() { 216 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 217 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 218 * } 219 * }); 220 * 221 * webview.loadUrl("http://slashdot.org/"); 222 * </pre> 223 * 224 * <h3>Cookie and window management</h3> 225 * 226 * <p>For obvious security reasons, your application has its own 227 * cache, cookie store etc.—it does not share the Browser 228 * application's data. Cookies are managed on a separate thread, so 229 * operations like index building don't block the UI 230 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 231 * if you want to use cookies in your application. 232 * </p> 233 * 234 * <p>By default, requests by the HTML to open new windows are 235 * ignored. This is true whether they be opened by JavaScript or by 236 * the target attribute on a link. You can customize your 237 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 238 * and render them in whatever manner you want.</p> 239 * 240 * <p>The standard behavior for an Activity is to be destroyed and 241 * recreated when the device orientation or any other configuration changes. This will cause 242 * the WebView to reload the current page. If you don't want that, you 243 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 244 * changes, and then just leave the WebView alone. It'll automatically 245 * re-orient itself as appropriate. Read <a 246 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 247 * more information about how to handle configuration changes during runtime.</p> 248 * 249 * 250 * <h3>Building web pages to support different screen densities</h3> 251 * 252 * <p>The screen density of a device is based on the screen resolution. A screen with low density 253 * has fewer available pixels per inch, where a screen with high density 254 * has more — sometimes significantly more — pixels per inch. The density of a 255 * screen is important because, other things being equal, a UI element (such as a button) whose 256 * height and width are defined in terms of screen pixels will appear larger on the lower density 257 * screen and smaller on the higher density screen. 258 * For simplicity, Android collapses all actual screen densities into three generalized densities: 259 * high, medium, and low.</p> 260 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 261 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 262 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 263 * are bigger). 264 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 265 * you (as a web developer) target screens with different screen densities.</p> 266 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 267 * <ul> 268 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 269 * default scaling factor used for the current device. For example, if the value of {@code 270 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 271 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 272 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 273 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 274 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 275 * (discussed below), then you can stop this default scaling behavior.</li> 276 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 277 * densities for which this style sheet is to be used. The corresponding value should be either 278 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 279 * density, or high density screens, respectively. For example: 280 * <pre> 281 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 282 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 283 * which is the high density pixel ratio.</p> 284 * </li> 285 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 286 * this to specify the target density for which the web page is designed, using the following 287 * values: 288 * <ul> 289 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 290 * occurs.</li> 291 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 292 * as appropriate.</li> 293 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 294 * low density screens scale down. This is also the default behavior.</li> 295 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 296 * as appropriate.</li> 297 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 298 * values are 70-400).</li> 299 * </ul> 300 * <p>Here's an example meta tag to specify the target density:</p> 301 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 302 * </ul> 303 * <p>If you want to modify your web page for different densities, by using the {@code 304 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 305 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 306 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 307 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 308 * 309 * 310 */ 311@Widget 312public class WebView extends AbsoluteLayout 313 implements ViewTreeObserver.OnGlobalFocusChangeListener, 314 ViewGroup.OnHierarchyChangeListener { 315 316 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 317 public void onGlobalLayout() { 318 if (isShown()) { 319 setGLRectViewport(); 320 } 321 } 322 } 323 324 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 325 public void onScrollChanged() { 326 if (isShown()) { 327 setGLRectViewport(); 328 } 329 } 330 } 331 332 // The listener to capture global layout change event. 333 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 334 335 // The listener to capture scroll event. 336 private InnerScrollChangedListener mScrollChangedListener = null; 337 338 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 339 // the screen all-the-time. Good for profiling our drawing code 340 static private final boolean AUTO_REDRAW_HACK = false; 341 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 342 private boolean mAutoRedraw; 343 344 // Reference to the AlertDialog displayed by InvokeListBox. 345 // It's used to dismiss the dialog in destroy if not done before. 346 private AlertDialog mListBoxDialog = null; 347 348 static final String LOGTAG = "webview"; 349 350 private ZoomManager mZoomManager; 351 352 private Rect mGLRectViewport = new Rect(); 353 private boolean mGLViewportEmpty = false; 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 in pixels. 409 * Use integer to prevent loss of dragging delta calculation accuracy; 410 * which was done in float and converted to integer, and resulted in gradual 411 * and compounding touch position and view dragging mismatch. 412 */ 413 private int mLastTouchX; 414 private int mLastTouchY; 415 416 /** 417 * Time of the last touch event. 418 */ 419 private long mLastTouchTime; 420 421 /** 422 * Time of the last time sending touch event to WebViewCore 423 */ 424 private long mLastSentTouchTime; 425 426 /** 427 * The minimum elapsed time before sending another ACTION_MOVE event to 428 * WebViewCore. This really should be tuned for each type of the devices. 429 * For example in Google Map api test case, it takes Dream device at least 430 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 431 * triggering the layout and drawing the picture. While the same process 432 * takes 60+ms on the current high speed device. If we make 433 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 434 * to WebViewCore queue and the real layout and draw events will be pushed 435 * to further, which slows down the refresh rate. Choose 50 to favor the 436 * current high speed devices. For Dream like devices, 100 is a better 437 * choice. Maybe make this in the buildspec later. 438 * (Update 12/14/2010: changed to 0 since current device should be able to 439 * handle the raw events and Map team voted to have the raw events too. 440 */ 441 private static final int TOUCH_SENT_INTERVAL = 0; 442 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 443 444 /** 445 * Helper class to get velocity for fling 446 */ 447 VelocityTracker mVelocityTracker; 448 private int mMaximumFling; 449 private float mLastVelocity; 450 private float mLastVelX; 451 private float mLastVelY; 452 453 // The id of the native layer being scrolled. 454 private int mScrollingLayer; 455 private Rect mScrollingLayerRect = new Rect(); 456 457 // only trigger accelerated fling if the new velocity is at least 458 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 459 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 460 461 /** 462 * Touch mode 463 */ 464 private int mTouchMode = TOUCH_DONE_MODE; 465 private static final int TOUCH_INIT_MODE = 1; 466 private static final int TOUCH_DRAG_START_MODE = 2; 467 private static final int TOUCH_DRAG_MODE = 3; 468 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 469 private static final int TOUCH_SHORTPRESS_MODE = 5; 470 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 471 private static final int TOUCH_DONE_MODE = 7; 472 private static final int TOUCH_PINCH_DRAG = 8; 473 private static final int TOUCH_DRAG_LAYER_MODE = 9; 474 475 // Whether to forward the touch events to WebCore 476 // Can only be set by WebKit via JNI. 477 private boolean mForwardTouchEvents = false; 478 479 // Whether to prevent default during touch. The initial value depends on 480 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 481 // for touch down. Otherwise UI will wait for the answer of the first 482 // confirmed move before taking over the control. 483 private static final int PREVENT_DEFAULT_NO = 0; 484 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 485 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 486 private static final int PREVENT_DEFAULT_YES = 3; 487 private static final int PREVENT_DEFAULT_IGNORE = 4; 488 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 489 490 // true when the touch movement exceeds the slop 491 private boolean mConfirmMove; 492 493 // if true, touch events will be first processed by WebCore, if prevent 494 // default is not set, the UI will continue handle them. 495 private boolean mDeferTouchProcess; 496 497 // Currently, multi-touch events are sent to WebKit first then back to 498 // WebView while single-touch events are handled in WebView first. 499 // So there is a chance that a single-touch move event is handled in WebView 500 // before multi-touch events are finished. 501 // if mIsHandlingMultiTouch is true, which means multi-touch event handling 502 // is not finished, then any single-touch move event will be skipped. 503 // FIXME: send single-touch events to WebKit first then back to WebView. 504 private boolean mIsHandlingMultiTouch = false; 505 506 // to avoid interfering with the current touch events, track them 507 // separately. Currently no snapping or fling in the deferred process mode 508 private int mDeferTouchMode = TOUCH_DONE_MODE; 509 private float mLastDeferTouchX; 510 private float mLastDeferTouchY; 511 512 // To keep track of whether the current drag was initiated by a WebTextView, 513 // so that we know not to hide the cursor 514 boolean mDragFromTextInput; 515 516 // Whether or not to draw the cursor ring. 517 private boolean mDrawCursorRing = true; 518 519 // true if onPause has been called (and not onResume) 520 private boolean mIsPaused; 521 522 private HitTestResult mInitialHitTestResult; 523 524 /** 525 * Customizable constant 526 */ 527 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 528 private int mTouchSlopSquare; 529 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 530 private int mDoubleTapSlopSquare; 531 // pre-computed density adjusted navigation slop 532 private int mNavSlop; 533 // This should be ViewConfiguration.getTapTimeout() 534 // But system time out is 100ms, which is too short for the browser. 535 // In the browser, if it switches out of tap too soon, jump tap won't work. 536 private static final int TAP_TIMEOUT = 200; 537 // This should be ViewConfiguration.getLongPressTimeout() 538 // But system time out is 500ms, which is too short for the browser. 539 // With a short timeout, it's difficult to treat trigger a short press. 540 private static final int LONG_PRESS_TIMEOUT = 1000; 541 // needed to avoid flinging after a pause of no movement 542 private static final int MIN_FLING_TIME = 250; 543 // draw unfiltered after drag is held without movement 544 private static final int MOTIONLESS_TIME = 100; 545 // The amount of content to overlap between two screens when going through 546 // pages with the space bar, in pixels. 547 private static final int PAGE_SCROLL_OVERLAP = 24; 548 549 /** 550 * These prevent calling requestLayout if either dimension is fixed. This 551 * depends on the layout parameters and the measure specs. 552 */ 553 boolean mWidthCanMeasure; 554 boolean mHeightCanMeasure; 555 556 // Remember the last dimensions we sent to the native side so we can avoid 557 // sending the same dimensions more than once. 558 int mLastWidthSent; 559 int mLastHeightSent; 560 561 private int mContentWidth; // cache of value from WebViewCore 562 private int mContentHeight; // cache of value from WebViewCore 563 564 // Need to have the separate control for horizontal and vertical scrollbar 565 // style than the View's single scrollbar style 566 private boolean mOverlayHorizontalScrollbar = true; 567 private boolean mOverlayVerticalScrollbar = false; 568 569 // our standard speed. this way small distances will be traversed in less 570 // time than large distances, but we cap the duration, so that very large 571 // distances won't take too long to get there. 572 private static final int STD_SPEED = 480; // pixels per second 573 // time for the longest scroll animation 574 private static final int MAX_DURATION = 750; // milliseconds 575 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 576 577 // Used by OverScrollGlow 578 OverScroller mScroller; 579 580 private boolean mInOverScrollMode = false; 581 private static Paint mOverScrollBackground; 582 private static Paint mOverScrollBorder; 583 584 private boolean mWrapContent; 585 private static final int MOTIONLESS_FALSE = 0; 586 private static final int MOTIONLESS_PENDING = 1; 587 private static final int MOTIONLESS_TRUE = 2; 588 private static final int MOTIONLESS_IGNORE = 3; 589 private int mHeldMotionless; 590 591 // An instance for injecting accessibility in WebViews with disabled 592 // JavaScript or ones for which no accessibility script exists 593 private AccessibilityInjector mAccessibilityInjector; 594 595 // flag indicating if accessibility script is injected so we 596 // know to handle Shift and arrows natively first 597 private boolean mAccessibilityScriptInjected; 598 599 // the color used to highlight the touch rectangles 600 private static final int mHightlightColor = 0x33000000; 601 // the round corner for the highlight path 602 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 603 // the region indicating where the user touched on the screen 604 private Region mTouchHighlightRegion = new Region(); 605 // the paint for the touch highlight 606 private Paint mTouchHightlightPaint; 607 // debug only 608 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 609 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 610 private Paint mTouchCrossHairColor; 611 private int mTouchHighlightX; 612 private int mTouchHighlightY; 613 614 /* 615 * Private message ids 616 */ 617 private static final int REMEMBER_PASSWORD = 1; 618 private static final int NEVER_REMEMBER_PASSWORD = 2; 619 private static final int SWITCH_TO_SHORTPRESS = 3; 620 private static final int SWITCH_TO_LONGPRESS = 4; 621 private static final int RELEASE_SINGLE_TAP = 5; 622 private static final int REQUEST_FORM_DATA = 6; 623 private static final int RESUME_WEBCORE_PRIORITY = 7; 624 private static final int DRAG_HELD_MOTIONLESS = 8; 625 private static final int AWAKEN_SCROLL_BARS = 9; 626 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 627 private static final int SCROLL_SELECT_TEXT = 11; 628 629 630 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 631 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 632 633 /* 634 * Package message ids 635 */ 636 //! arg1=x, arg2=y 637 static final int SCROLL_TO_MSG_ID = 101; 638 static final int SCROLL_BY_MSG_ID = 102; 639 //! arg1=x, arg2=y 640 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 641 //! arg1=x, arg2=y 642 static final int SYNC_SCROLL_TO_MSG_ID = 104; 643 static final int NEW_PICTURE_MSG_ID = 105; 644 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 645 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 646 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 647 static final int UPDATE_ZOOM_RANGE = 109; 648 static final int UNHANDLED_NAV_KEY = 110; 649 static final int CLEAR_TEXT_ENTRY = 111; 650 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 651 static final int SHOW_RECT_MSG_ID = 113; 652 static final int LONG_PRESS_CENTER = 114; 653 static final int PREVENT_TOUCH_ID = 115; 654 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 655 // obj=Rect in doc coordinates 656 static final int INVAL_RECT_MSG_ID = 117; 657 static final int REQUEST_KEYBOARD = 118; 658 static final int DO_MOTION_UP = 119; 659 static final int SHOW_FULLSCREEN = 120; 660 static final int HIDE_FULLSCREEN = 121; 661 static final int DOM_FOCUS_CHANGED = 122; 662 static final int REPLACE_BASE_CONTENT = 123; 663 static final int FORM_DID_BLUR = 124; 664 static final int RETURN_LABEL = 125; 665 static final int FIND_AGAIN = 126; 666 static final int CENTER_FIT_RECT = 127; 667 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 668 static final int SET_SCROLLBAR_MODES = 129; 669 static final int SELECTION_STRING_CHANGED = 130; 670 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 671 static final int SAVE_WEBARCHIVE_FINISHED = 132; 672 673 static final int SET_AUTOFILLABLE = 133; 674 static final int AUTOFILL_COMPLETE = 134; 675 676 static final int SELECT_AT = 135; 677 static final int SCREEN_ON = 136; 678 679 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 680 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 681 682 static final String[] HandlerPrivateDebugString = { 683 "REMEMBER_PASSWORD", // = 1; 684 "NEVER_REMEMBER_PASSWORD", // = 2; 685 "SWITCH_TO_SHORTPRESS", // = 3; 686 "SWITCH_TO_LONGPRESS", // = 4; 687 "RELEASE_SINGLE_TAP", // = 5; 688 "REQUEST_FORM_DATA", // = 6; 689 "RESUME_WEBCORE_PRIORITY", // = 7; 690 "DRAG_HELD_MOTIONLESS", // = 8; 691 "AWAKEN_SCROLL_BARS", // = 9; 692 "PREVENT_DEFAULT_TIMEOUT", // = 10; 693 "SCROLL_SELECT_TEXT" // = 11; 694 }; 695 696 static final String[] HandlerPackageDebugString = { 697 "SCROLL_TO_MSG_ID", // = 101; 698 "SCROLL_BY_MSG_ID", // = 102; 699 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 700 "SYNC_SCROLL_TO_MSG_ID", // = 104; 701 "NEW_PICTURE_MSG_ID", // = 105; 702 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 703 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 704 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 705 "UPDATE_ZOOM_RANGE", // = 109; 706 "UNHANDLED_NAV_KEY", // = 110; 707 "CLEAR_TEXT_ENTRY", // = 111; 708 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 709 "SHOW_RECT_MSG_ID", // = 113; 710 "LONG_PRESS_CENTER", // = 114; 711 "PREVENT_TOUCH_ID", // = 115; 712 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 713 "INVAL_RECT_MSG_ID", // = 117; 714 "REQUEST_KEYBOARD", // = 118; 715 "DO_MOTION_UP", // = 119; 716 "SHOW_FULLSCREEN", // = 120; 717 "HIDE_FULLSCREEN", // = 121; 718 "DOM_FOCUS_CHANGED", // = 122; 719 "REPLACE_BASE_CONTENT", // = 123; 720 "FORM_DID_BLUR", // = 124; 721 "RETURN_LABEL", // = 125; 722 "FIND_AGAIN", // = 126; 723 "CENTER_FIT_RECT", // = 127; 724 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 725 "SET_SCROLLBAR_MODES", // = 129; 726 "SELECTION_STRING_CHANGED", // = 130; 727 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 728 "SAVE_WEBARCHIVE_FINISHED", // = 132; 729 "SET_AUTOFILLABLE", // = 133; 730 "AUTOFILL_COMPLETE", // = 134; 731 "SELECT_AT", // = 135; 732 "SCREEN_ON" // = 136; 733 }; 734 735 // If the site doesn't use the viewport meta tag to specify the viewport, 736 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 737 static final int DEFAULT_VIEWPORT_WIDTH = 980; 738 739 // normally we try to fit the content to the minimum preferred width 740 // calculated by the Webkit. To avoid the bad behavior when some site's 741 // minimum preferred width keeps growing when changing the viewport width or 742 // the minimum preferred width is huge, an upper limit is needed. 743 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 744 745 // initial scale in percent. 0 means using default. 746 private int mInitialScaleInPercent = 0; 747 748 private boolean mUserScroll = false; 749 750 private int mSnapScrollMode = SNAP_NONE; 751 private static final int SNAP_NONE = 0; 752 private static final int SNAP_LOCK = 1; // not a separate state 753 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 754 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 755 private boolean mSnapPositive; 756 757 // keep these in sync with their counterparts in WebView.cpp 758 private static final int DRAW_EXTRAS_NONE = 0; 759 private static final int DRAW_EXTRAS_FIND = 1; 760 private static final int DRAW_EXTRAS_SELECTION = 2; 761 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 762 763 // keep this in sync with WebCore:ScrollbarMode in WebKit 764 private static final int SCROLLBAR_AUTO = 0; 765 private static final int SCROLLBAR_ALWAYSOFF = 1; 766 // as we auto fade scrollbar, this is ignored. 767 private static final int SCROLLBAR_ALWAYSON = 2; 768 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 769 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 770 771 // constants for determining script injection strategy 772 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 773 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 774 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 775 776 // the alias via which accessibility JavaScript interface is exposed 777 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 778 779 // JavaScript to inject the script chooser which will 780 // pick the right script for the current URL 781 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 782 "javascript:(function() {" + 783 " var chooser = document.createElement('script');" + 784 " chooser.type = 'text/javascript';" + 785 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 786 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 787 " })();"; 788 789 // Regular expression that matches the "axs" URL parameter. 790 // The value of 0 means the accessibility script is opted out 791 // The value of 1 means the accessibility script is already injected 792 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 793 794 // variable to cache the above pattern in case accessibility is enabled. 795 private Pattern mMatchAxsUrlParameterPattern; 796 797 /** 798 * Max distance to overscroll by in pixels. 799 * This how far content can be pulled beyond its normal bounds by the user. 800 */ 801 private int mOverscrollDistance; 802 803 /** 804 * Max distance to overfling by in pixels. 805 * This is how far flinged content can move beyond the end of its normal bounds. 806 */ 807 private int mOverflingDistance; 808 809 private OverScrollGlow mOverScrollGlow; 810 811 // Used to match key downs and key ups 812 private boolean mGotKeyDown; 813 814 /* package */ static boolean mLogEvent = true; 815 816 // for event log 817 private long mLastTouchUpTime = 0; 818 819 private WebViewCore.AutoFillData mAutoFillData; 820 821 /** 822 * URI scheme for telephone number 823 */ 824 public static final String SCHEME_TEL = "tel:"; 825 /** 826 * URI scheme for email address 827 */ 828 public static final String SCHEME_MAILTO = "mailto:"; 829 /** 830 * URI scheme for map address 831 */ 832 public static final String SCHEME_GEO = "geo:0,0?q="; 833 834 private int mBackgroundColor = Color.WHITE; 835 836 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 837 private int mAutoScrollX = 0; 838 private int mAutoScrollY = 0; 839 private int mMinAutoScrollX = 0; 840 private int mMaxAutoScrollX = 0; 841 private int mMinAutoScrollY = 0; 842 private int mMaxAutoScrollY = 0; 843 private Rect mScrollingLayerBounds = new Rect(); 844 private boolean mSentAutoScrollMessage = false; 845 846 // Used to notify listeners of a new picture. 847 private PictureListener mPictureListener; 848 /** 849 * Interface to listen for new pictures as they change. 850 */ 851 public interface PictureListener { 852 /** 853 * Notify the listener that the picture has changed. 854 * @param view The WebView that owns the picture. 855 * @param picture The new picture. 856 */ 857 public void onNewPicture(WebView view, Picture picture); 858 } 859 860 // FIXME: Want to make this public, but need to change the API file. 861 public /*static*/ class HitTestResult { 862 /** 863 * Default HitTestResult, where the target is unknown 864 */ 865 public static final int UNKNOWN_TYPE = 0; 866 /** 867 * HitTestResult for hitting a HTML::a tag 868 */ 869 public static final int ANCHOR_TYPE = 1; 870 /** 871 * HitTestResult for hitting a phone number 872 */ 873 public static final int PHONE_TYPE = 2; 874 /** 875 * HitTestResult for hitting a map address 876 */ 877 public static final int GEO_TYPE = 3; 878 /** 879 * HitTestResult for hitting an email address 880 */ 881 public static final int EMAIL_TYPE = 4; 882 /** 883 * HitTestResult for hitting an HTML::img tag 884 */ 885 public static final int IMAGE_TYPE = 5; 886 /** 887 * HitTestResult for hitting a HTML::a tag which contains HTML::img 888 */ 889 public static final int IMAGE_ANCHOR_TYPE = 6; 890 /** 891 * HitTestResult for hitting a HTML::a tag with src=http 892 */ 893 public static final int SRC_ANCHOR_TYPE = 7; 894 /** 895 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 896 */ 897 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 898 /** 899 * HitTestResult for hitting an edit text area 900 */ 901 public static final int EDIT_TEXT_TYPE = 9; 902 903 private int mType; 904 private String mExtra; 905 906 HitTestResult() { 907 mType = UNKNOWN_TYPE; 908 } 909 910 private void setType(int type) { 911 mType = type; 912 } 913 914 private void setExtra(String extra) { 915 mExtra = extra; 916 } 917 918 public int getType() { 919 return mType; 920 } 921 922 public String getExtra() { 923 return mExtra; 924 } 925 } 926 927 /** 928 * Construct a new WebView with a Context object. 929 * @param context A Context object used to access application assets. 930 */ 931 public WebView(Context context) { 932 this(context, null); 933 } 934 935 /** 936 * Construct a new WebView with layout parameters. 937 * @param context A Context object used to access application assets. 938 * @param attrs An AttributeSet passed to our parent. 939 */ 940 public WebView(Context context, AttributeSet attrs) { 941 this(context, attrs, com.android.internal.R.attr.webViewStyle); 942 } 943 944 /** 945 * Construct a new WebView with layout parameters and a default style. 946 * @param context A Context object used to access application assets. 947 * @param attrs An AttributeSet passed to our parent. 948 * @param defStyle The default style resource ID. 949 */ 950 public WebView(Context context, AttributeSet attrs, int defStyle) { 951 this(context, attrs, defStyle, false); 952 } 953 954 /** 955 * Construct a new WebView with layout parameters and a default style. 956 * @param context A Context object used to access application assets. 957 * @param attrs An AttributeSet passed to our parent. 958 * @param defStyle The default style resource ID. 959 */ 960 public WebView(Context context, AttributeSet attrs, int defStyle, 961 boolean privateBrowsing) { 962 this(context, attrs, defStyle, null, privateBrowsing); 963 } 964 965 /** 966 * Construct a new WebView with layout parameters, a default style and a set 967 * of custom Javscript interfaces to be added to the WebView at initialization 968 * time. This guarantees that these interfaces will be available when the JS 969 * context is initialized. 970 * @param context A Context object used to access application assets. 971 * @param attrs An AttributeSet passed to our parent. 972 * @param defStyle The default style resource ID. 973 * @param javaScriptInterfaces is a Map of interface names, as keys, and 974 * object implementing those interfaces, as values. 975 * @hide pending API council approval. 976 */ 977 protected WebView(Context context, AttributeSet attrs, int defStyle, 978 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 979 super(context, attrs, defStyle); 980 981 // Used by the chrome stack to find application paths 982 JniUtil.setContext(context); 983 984 if (AccessibilityManager.getInstance(context).isEnabled()) { 985 if (javaScriptInterfaces == null) { 986 javaScriptInterfaces = new HashMap<String, Object>(); 987 } 988 exposeAccessibilityJavaScriptApi(javaScriptInterfaces); 989 } 990 991 mCallbackProxy = new CallbackProxy(context, this); 992 mViewManager = new ViewManager(this); 993 L10nUtils.loadStrings(context); 994 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 995 mDatabase = WebViewDatabase.getInstance(context); 996 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 997 mZoomManager = new ZoomManager(this, mCallbackProxy); 998 999 /* The init method must follow the creation of certain member variables, 1000 * such as the mZoomManager. 1001 */ 1002 init(); 1003 setupPackageListener(context); 1004 setupProxyListener(context); 1005 updateMultiTouchSupport(context); 1006 1007 if (privateBrowsing) { 1008 startPrivateBrowsing(); 1009 } 1010 1011 mAutoFillData = new WebViewCore.AutoFillData(); 1012 } 1013 1014 private static class ProxyReceiver extends BroadcastReceiver { 1015 @Override 1016 public void onReceive(Context context, Intent intent) { 1017 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1018 handleProxyBroadcast(intent); 1019 } 1020 } 1021 } 1022 1023 /* 1024 * A variable to track if there is a receiver added for PROXY_CHANGE_ACTION 1025 */ 1026 private static boolean sProxyReceiverAdded; 1027 1028 private static synchronized void setupProxyListener(Context context) { 1029 if (sProxyReceiverAdded) { 1030 return; 1031 } 1032 IntentFilter filter = new IntentFilter(); 1033 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1034 Intent currentProxy = context.getApplicationContext().registerReceiver( 1035 new ProxyReceiver(), filter); 1036 sProxyReceiverAdded = true; 1037 if (currentProxy != null) { 1038 handleProxyBroadcast(currentProxy); 1039 } 1040 } 1041 1042 private static void handleProxyBroadcast(Intent intent) { 1043 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1044 if (proxyProperties == null || proxyProperties.getHost() == null) { 1045 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, ""); 1046 return; 1047 } 1048 1049 String host = proxyProperties.getHost(); 1050 int port = proxyProperties.getPort(); 1051 if (port != 0) 1052 host += ":" + port; 1053 1054 // TODO: Handle exclusion list 1055 // The plan is to make an AndroidProxyResolver, and handle the blacklist 1056 // there 1057 String exclusionList = proxyProperties.getExclusionList(); 1058 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host); 1059 } 1060 1061 /* 1062 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1063 * or ACTION_PACKAGE_REMOVED. 1064 */ 1065 private static boolean sPackageInstallationReceiverAdded = false; 1066 1067 /* 1068 * A set of Google packages we monitor for the 1069 * navigator.isApplicationInstalled() API. Add additional packages as 1070 * needed. 1071 */ 1072 private static Set<String> sGoogleApps; 1073 static { 1074 sGoogleApps = new HashSet<String>(); 1075 sGoogleApps.add("com.google.android.youtube"); 1076 } 1077 1078 private static class PackageListener extends BroadcastReceiver { 1079 @Override 1080 public void onReceive(Context context, Intent intent) { 1081 final String action = intent.getAction(); 1082 final String packageName = intent.getData().getSchemeSpecificPart(); 1083 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1084 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1085 // if it is replacing, refreshPlugins() when adding 1086 return; 1087 } 1088 1089 if (sGoogleApps.contains(packageName)) { 1090 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1091 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1092 } else { 1093 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1094 } 1095 } 1096 1097 PluginManager pm = PluginManager.getInstance(context); 1098 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1099 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1100 } 1101 } 1102 } 1103 1104 private void setupPackageListener(Context context) { 1105 1106 /* 1107 * we must synchronize the instance check and the creation of the 1108 * receiver to ensure that only ONE receiver exists for all WebView 1109 * instances. 1110 */ 1111 synchronized (WebView.class) { 1112 1113 // if the receiver already exists then we do not need to register it 1114 // again 1115 if (sPackageInstallationReceiverAdded) { 1116 return; 1117 } 1118 1119 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1120 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1121 filter.addDataScheme("package"); 1122 BroadcastReceiver packageListener = new PackageListener(); 1123 context.getApplicationContext().registerReceiver(packageListener, filter); 1124 sPackageInstallationReceiverAdded = true; 1125 } 1126 1127 // check if any of the monitored apps are already installed 1128 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1129 1130 @Override 1131 protected Set<String> doInBackground(Void... unused) { 1132 Set<String> installedPackages = new HashSet<String>(); 1133 PackageManager pm = mContext.getPackageManager(); 1134 List<PackageInfo> packages = pm.getInstalledPackages(0); 1135 for (PackageInfo p : packages) { 1136 if (sGoogleApps.contains(p.packageName)) { 1137 installedPackages.add(p.packageName); 1138 } 1139 } 1140 return installedPackages; 1141 } 1142 1143 // Executes on the UI thread 1144 @Override 1145 protected void onPostExecute(Set<String> installedPackages) { 1146 if (mWebViewCore != null) { 1147 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1148 } 1149 } 1150 }; 1151 task.execute(); 1152 } 1153 1154 void updateMultiTouchSupport(Context context) { 1155 mZoomManager.updateMultiTouchSupport(context); 1156 } 1157 1158 private void init() { 1159 setWillNotDraw(false); 1160 setFocusable(true); 1161 setFocusableInTouchMode(true); 1162 setClickable(true); 1163 setLongClickable(true); 1164 1165 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1166 int slop = configuration.getScaledTouchSlop(); 1167 mTouchSlopSquare = slop * slop; 1168 mMinLockSnapReverseDistance = slop; 1169 slop = configuration.getScaledDoubleTapSlop(); 1170 mDoubleTapSlopSquare = slop * slop; 1171 final float density = getContext().getResources().getDisplayMetrics().density; 1172 // use one line height, 16 based on our current default font, for how 1173 // far we allow a touch be away from the edge of a link 1174 mNavSlop = (int) (16 * density); 1175 mZoomManager.init(density); 1176 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1177 1178 // Compute the inverse of the density squared. 1179 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1180 1181 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1182 mOverflingDistance = configuration.getScaledOverflingDistance(); 1183 } 1184 1185 /** 1186 * Exposes accessibility APIs to JavaScript by appending them to the JavaScript 1187 * interfaces map provided by the WebView client. In case of conflicting 1188 * alias with the one of the accessibility API the user specified one wins. 1189 * 1190 * @param javaScriptInterfaces A map with interfaces to be exposed to JavaScript. 1191 */ 1192 private void exposeAccessibilityJavaScriptApi(Map<String, Object> javaScriptInterfaces) { 1193 if (javaScriptInterfaces.containsKey(ALIAS_ACCESSIBILITY_JS_INTERFACE)) { 1194 Log.w(LOGTAG, "JavaScript interface mapped to \"" + ALIAS_ACCESSIBILITY_JS_INTERFACE 1195 + "\" overrides the accessibility API JavaScript interface. No accessibility" 1196 + "API will be exposed to JavaScript!"); 1197 return; 1198 } 1199 1200 // expose the TTS for now ... 1201 javaScriptInterfaces.put(ALIAS_ACCESSIBILITY_JS_INTERFACE, 1202 new TextToSpeech(getContext(), null)); 1203 } 1204 1205 @Override 1206 public void setOverScrollMode(int mode) { 1207 super.setOverScrollMode(mode); 1208 if (mode != OVER_SCROLL_NEVER) { 1209 if (mOverScrollGlow == null) { 1210 mOverScrollGlow = new OverScrollGlow(this); 1211 } 1212 } else { 1213 mOverScrollGlow = null; 1214 } 1215 } 1216 1217 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1218 final float density = mContext.getResources().getDisplayMetrics().density 1219 * 100 / zoomDensity; 1220 mNavSlop = (int) (16 * density); 1221 mZoomManager.updateDefaultZoomDensity(density); 1222 } 1223 1224 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1225 String password, final Message resumeMsg) { 1226 boolean rVal = false; 1227 if (resumeMsg == null) { 1228 // null resumeMsg implies saving password silently 1229 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1230 } else { 1231 final Message remember = mPrivateHandler.obtainMessage( 1232 REMEMBER_PASSWORD); 1233 remember.getData().putString("host", schemePlusHost); 1234 remember.getData().putString("username", username); 1235 remember.getData().putString("password", password); 1236 remember.obj = resumeMsg; 1237 1238 final Message neverRemember = mPrivateHandler.obtainMessage( 1239 NEVER_REMEMBER_PASSWORD); 1240 neverRemember.getData().putString("host", schemePlusHost); 1241 neverRemember.getData().putString("username", username); 1242 neverRemember.getData().putString("password", password); 1243 neverRemember.obj = resumeMsg; 1244 1245 new AlertDialog.Builder(getContext()) 1246 .setTitle(com.android.internal.R.string.save_password_label) 1247 .setMessage(com.android.internal.R.string.save_password_message) 1248 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1249 new DialogInterface.OnClickListener() { 1250 public void onClick(DialogInterface dialog, int which) { 1251 resumeMsg.sendToTarget(); 1252 } 1253 }) 1254 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1255 new DialogInterface.OnClickListener() { 1256 public void onClick(DialogInterface dialog, int which) { 1257 remember.sendToTarget(); 1258 } 1259 }) 1260 .setNegativeButton(com.android.internal.R.string.save_password_never, 1261 new DialogInterface.OnClickListener() { 1262 public void onClick(DialogInterface dialog, int which) { 1263 neverRemember.sendToTarget(); 1264 } 1265 }) 1266 .setOnCancelListener(new OnCancelListener() { 1267 public void onCancel(DialogInterface dialog) { 1268 resumeMsg.sendToTarget(); 1269 } 1270 }).show(); 1271 // Return true so that WebViewCore will pause while the dialog is 1272 // up. 1273 rVal = true; 1274 } 1275 return rVal; 1276 } 1277 1278 @Override 1279 public void setScrollBarStyle(int style) { 1280 if (style == View.SCROLLBARS_INSIDE_INSET 1281 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1282 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1283 } else { 1284 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1285 } 1286 super.setScrollBarStyle(style); 1287 } 1288 1289 /** 1290 * Specify whether the horizontal scrollbar has overlay style. 1291 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1292 */ 1293 public void setHorizontalScrollbarOverlay(boolean overlay) { 1294 mOverlayHorizontalScrollbar = overlay; 1295 } 1296 1297 /** 1298 * Specify whether the vertical scrollbar has overlay style. 1299 * @param overlay TRUE if vertical scrollbar should have overlay style. 1300 */ 1301 public void setVerticalScrollbarOverlay(boolean overlay) { 1302 mOverlayVerticalScrollbar = overlay; 1303 } 1304 1305 /** 1306 * Return whether horizontal scrollbar has overlay style 1307 * @return TRUE if horizontal scrollbar has overlay style. 1308 */ 1309 public boolean overlayHorizontalScrollbar() { 1310 return mOverlayHorizontalScrollbar; 1311 } 1312 1313 /** 1314 * Return whether vertical scrollbar has overlay style 1315 * @return TRUE if vertical scrollbar has overlay style. 1316 */ 1317 public boolean overlayVerticalScrollbar() { 1318 return mOverlayVerticalScrollbar; 1319 } 1320 1321 /* 1322 * Return the width of the view where the content of WebView should render 1323 * to. 1324 * Note: this can be called from WebCoreThread. 1325 */ 1326 /* package */ int getViewWidth() { 1327 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1328 return getWidth(); 1329 } else { 1330 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1331 } 1332 } 1333 1334 /* 1335 * returns the height of the titlebarview (if any). Does not care about 1336 * scrolling 1337 */ 1338 int getTitleHeight() { 1339 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1340 } 1341 1342 /* 1343 * Return the amount of the titlebarview (if any) that is visible 1344 * 1345 * @hide 1346 */ 1347 public int getVisibleTitleHeight() { 1348 // need to restrict mScrollY due to over scroll 1349 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1350 } 1351 1352 /* 1353 * Return the height of the view where the content of WebView should render 1354 * to. Note that this excludes mTitleBar, if there is one. 1355 * Note: this can be called from WebCoreThread. 1356 */ 1357 /* package */ int getViewHeight() { 1358 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1359 } 1360 1361 private int getViewHeightWithTitle() { 1362 int height = getHeight(); 1363 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1364 height -= getHorizontalScrollbarHeight(); 1365 } 1366 return height; 1367 } 1368 1369 /** 1370 * @return The SSL certificate for the main top-level page or null if 1371 * there is no certificate (the site is not secure). 1372 */ 1373 public SslCertificate getCertificate() { 1374 return mCertificate; 1375 } 1376 1377 /** 1378 * Sets the SSL certificate for the main top-level page. 1379 */ 1380 public void setCertificate(SslCertificate certificate) { 1381 if (DebugFlags.WEB_VIEW) { 1382 Log.v(LOGTAG, "setCertificate=" + certificate); 1383 } 1384 // here, the certificate can be null (if the site is not secure) 1385 mCertificate = certificate; 1386 } 1387 1388 //------------------------------------------------------------------------- 1389 // Methods called by activity 1390 //------------------------------------------------------------------------- 1391 1392 /** 1393 * Save the username and password for a particular host in the WebView's 1394 * internal database. 1395 * @param host The host that required the credentials. 1396 * @param username The username for the given host. 1397 * @param password The password for the given host. 1398 */ 1399 public void savePassword(String host, String username, String password) { 1400 mDatabase.setUsernamePassword(host, username, password); 1401 } 1402 1403 /** 1404 * Set the HTTP authentication credentials for a given host and realm. 1405 * 1406 * @param host The host for the credentials. 1407 * @param realm The realm for the credentials. 1408 * @param username The username for the password. If it is null, it means 1409 * password can't be saved. 1410 * @param password The password 1411 */ 1412 public void setHttpAuthUsernamePassword(String host, String realm, 1413 String username, String password) { 1414 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1415 } 1416 1417 /** 1418 * Retrieve the HTTP authentication username and password for a given 1419 * host & realm pair 1420 * 1421 * @param host The host for which the credentials apply. 1422 * @param realm The realm for which the credentials apply. 1423 * @return String[] if found, String[0] is username, which can be null and 1424 * String[1] is password. Return null if it can't find anything. 1425 */ 1426 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1427 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1428 } 1429 1430 /** 1431 * Remove Find or Select ActionModes, if active. 1432 */ 1433 private void clearActionModes() { 1434 if (mSelectCallback != null) { 1435 mSelectCallback.finish(); 1436 } 1437 if (mFindCallback != null) { 1438 mFindCallback.finish(); 1439 } 1440 } 1441 1442 /** 1443 * Called to clear state when moving from one page to another, or changing 1444 * in some other way that makes elements associated with the current page 1445 * (such as WebTextView or ActionModes) no longer relevant. 1446 */ 1447 private void clearHelpers() { 1448 clearTextEntry(); 1449 clearActionModes(); 1450 dismissFullScreenMode(); 1451 } 1452 1453 /** 1454 * Destroy the internal state of the WebView. This method should be called 1455 * after the WebView has been removed from the view system. No other 1456 * methods may be called on a WebView after destroy. 1457 */ 1458 public void destroy() { 1459 clearHelpers(); 1460 if (mListBoxDialog != null) { 1461 mListBoxDialog.dismiss(); 1462 mListBoxDialog = null; 1463 } 1464 if (mWebViewCore != null) { 1465 // Set the handlers to null before destroying WebViewCore so no 1466 // more messages will be posted. 1467 mCallbackProxy.setWebViewClient(null); 1468 mCallbackProxy.setWebChromeClient(null); 1469 // Tell WebViewCore to destroy itself 1470 synchronized (this) { 1471 WebViewCore webViewCore = mWebViewCore; 1472 mWebViewCore = null; // prevent using partial webViewCore 1473 webViewCore.destroy(); 1474 } 1475 // Remove any pending messages that might not be serviced yet. 1476 mPrivateHandler.removeCallbacksAndMessages(null); 1477 mCallbackProxy.removeCallbacksAndMessages(null); 1478 // Wake up the WebCore thread just in case it is waiting for a 1479 // JavaScript dialog. 1480 synchronized (mCallbackProxy) { 1481 mCallbackProxy.notify(); 1482 } 1483 } 1484 if (mNativeClass != 0) { 1485 nativeDestroy(); 1486 mNativeClass = 0; 1487 } 1488 } 1489 1490 /** 1491 * Enables platform notifications of data state and proxy changes. 1492 */ 1493 public static void enablePlatformNotifications() { 1494 Network.enablePlatformNotifications(); 1495 } 1496 1497 /** 1498 * If platform notifications are enabled, this should be called 1499 * from the Activity's onPause() or onStop(). 1500 */ 1501 public static void disablePlatformNotifications() { 1502 Network.disablePlatformNotifications(); 1503 } 1504 1505 /** 1506 * Sets JavaScript engine flags. 1507 * 1508 * @param flags JS engine flags in a String 1509 * 1510 * @hide pending API solidification 1511 */ 1512 public void setJsFlags(String flags) { 1513 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1514 } 1515 1516 /** 1517 * Inform WebView of the network state. This is used to set 1518 * the JavaScript property window.navigator.isOnline and 1519 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1520 * @param networkUp boolean indicating if network is available 1521 */ 1522 public void setNetworkAvailable(boolean networkUp) { 1523 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1524 networkUp ? 1 : 0, 0); 1525 } 1526 1527 /** 1528 * Inform WebView about the current network type. 1529 * {@hide} 1530 */ 1531 public void setNetworkType(String type, String subtype) { 1532 Map<String, String> map = new HashMap<String, String>(); 1533 map.put("type", type); 1534 map.put("subtype", subtype); 1535 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1536 } 1537 /** 1538 * Save the state of this WebView used in 1539 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1540 * method no longer stores the display data for this WebView. The previous 1541 * behavior could potentially leak files if {@link #restoreState} was never 1542 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1543 * and restoring the display data. 1544 * @param outState The Bundle to store the WebView state. 1545 * @return The same copy of the back/forward list used to save the state. If 1546 * saveState fails, the returned list will be null. 1547 * @see #savePicture 1548 * @see #restorePicture 1549 */ 1550 public WebBackForwardList saveState(Bundle outState) { 1551 if (outState == null) { 1552 return null; 1553 } 1554 // We grab a copy of the back/forward list because a client of WebView 1555 // may have invalidated the history list by calling clearHistory. 1556 WebBackForwardList list = copyBackForwardList(); 1557 final int currentIndex = list.getCurrentIndex(); 1558 final int size = list.getSize(); 1559 // We should fail saving the state if the list is empty or the index is 1560 // not in a valid range. 1561 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1562 return null; 1563 } 1564 outState.putInt("index", currentIndex); 1565 // FIXME: This should just be a byte[][] instead of ArrayList but 1566 // Parcel.java does not have the code to handle multi-dimensional 1567 // arrays. 1568 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1569 for (int i = 0; i < size; i++) { 1570 WebHistoryItem item = list.getItemAtIndex(i); 1571 if (null == item) { 1572 // FIXME: this shouldn't happen 1573 // need to determine how item got set to null 1574 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1575 return null; 1576 } 1577 byte[] data = item.getFlattenedData(); 1578 if (data == null) { 1579 // It would be very odd to not have any data for a given history 1580 // item. And we will fail to rebuild the history list without 1581 // flattened data. 1582 return null; 1583 } 1584 history.add(data); 1585 } 1586 outState.putSerializable("history", history); 1587 if (mCertificate != null) { 1588 outState.putBundle("certificate", 1589 SslCertificate.saveState(mCertificate)); 1590 } 1591 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1592 mZoomManager.saveZoomState(outState); 1593 return list; 1594 } 1595 1596 /** 1597 * Save the current display data to the Bundle given. Used in conjunction 1598 * with {@link #saveState}. 1599 * @param b A Bundle to store the display data. 1600 * @param dest The file to store the serialized picture data. Will be 1601 * overwritten with this WebView's picture data. 1602 * @return True if the picture was successfully saved. 1603 */ 1604 public boolean savePicture(Bundle b, final File dest) { 1605 if (dest == null || b == null) { 1606 return false; 1607 } 1608 final Picture p = capturePicture(); 1609 // Use a temporary file while writing to ensure the destination file 1610 // contains valid data. 1611 final File temp = new File(dest.getPath() + ".writing"); 1612 new Thread(new Runnable() { 1613 public void run() { 1614 FileOutputStream out = null; 1615 try { 1616 out = new FileOutputStream(temp); 1617 p.writeToStream(out); 1618 // Writing the picture succeeded, rename the temporary file 1619 // to the destination. 1620 temp.renameTo(dest); 1621 } catch (Exception e) { 1622 // too late to do anything about it. 1623 } finally { 1624 if (out != null) { 1625 try { 1626 out.close(); 1627 } catch (Exception e) { 1628 // Can't do anything about that 1629 } 1630 } 1631 temp.delete(); 1632 } 1633 } 1634 }).start(); 1635 // now update the bundle 1636 b.putInt("scrollX", mScrollX); 1637 b.putInt("scrollY", mScrollY); 1638 mZoomManager.saveZoomState(b); 1639 return true; 1640 } 1641 1642 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1643 int sx = b.getInt("scrollX", 0); 1644 int sy = b.getInt("scrollY", 0); 1645 1646 mDrawHistory = true; 1647 mHistoryPicture = p; 1648 mScrollX = sx; 1649 mScrollY = sy; 1650 mZoomManager.restoreZoomState(b); 1651 final float scale = mZoomManager.getScale(); 1652 mHistoryWidth = Math.round(p.getWidth() * scale); 1653 mHistoryHeight = Math.round(p.getHeight() * scale); 1654 1655 invalidate(); 1656 } 1657 1658 /** 1659 * Restore the display data that was save in {@link #savePicture}. Used in 1660 * conjunction with {@link #restoreState}. 1661 * @param b A Bundle containing the saved display data. 1662 * @param src The file where the picture data was stored. 1663 * @return True if the picture was successfully restored. 1664 */ 1665 public boolean restorePicture(Bundle b, File src) { 1666 if (src == null || b == null) { 1667 return false; 1668 } 1669 if (!src.exists()) { 1670 return false; 1671 } 1672 try { 1673 final FileInputStream in = new FileInputStream(src); 1674 final Bundle copy = new Bundle(b); 1675 new Thread(new Runnable() { 1676 public void run() { 1677 try { 1678 final Picture p = Picture.createFromStream(in); 1679 if (p != null) { 1680 // Post a runnable on the main thread to update the 1681 // history picture fields. 1682 mPrivateHandler.post(new Runnable() { 1683 public void run() { 1684 restoreHistoryPictureFields(p, copy); 1685 } 1686 }); 1687 } 1688 } finally { 1689 try { 1690 in.close(); 1691 } catch (Exception e) { 1692 // Nothing we can do now. 1693 } 1694 } 1695 } 1696 }).start(); 1697 } catch (FileNotFoundException e){ 1698 e.printStackTrace(); 1699 } 1700 return true; 1701 } 1702 1703 /** 1704 * Restore the state of this WebView from the given map used in 1705 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1706 * be called to restore the state of the WebView before using the object. If 1707 * it is called after the WebView has had a chance to build state (load 1708 * pages, create a back/forward list, etc.) there may be undesirable 1709 * side-effects. Please note that this method no longer restores the 1710 * display data for this WebView. See {@link #savePicture} and {@link 1711 * #restorePicture} for saving and restoring the display data. 1712 * @param inState The incoming Bundle of state. 1713 * @return The restored back/forward list or null if restoreState failed. 1714 * @see #savePicture 1715 * @see #restorePicture 1716 */ 1717 public WebBackForwardList restoreState(Bundle inState) { 1718 WebBackForwardList returnList = null; 1719 if (inState == null) { 1720 return returnList; 1721 } 1722 if (inState.containsKey("index") && inState.containsKey("history")) { 1723 mCertificate = SslCertificate.restoreState( 1724 inState.getBundle("certificate")); 1725 1726 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1727 final int index = inState.getInt("index"); 1728 // We can't use a clone of the list because we need to modify the 1729 // shared copy, so synchronize instead to prevent concurrent 1730 // modifications. 1731 synchronized (list) { 1732 final List<byte[]> history = 1733 (List<byte[]>) inState.getSerializable("history"); 1734 final int size = history.size(); 1735 // Check the index bounds so we don't crash in native code while 1736 // restoring the history index. 1737 if (index < 0 || index >= size) { 1738 return null; 1739 } 1740 for (int i = 0; i < size; i++) { 1741 byte[] data = history.remove(0); 1742 if (data == null) { 1743 // If we somehow have null data, we cannot reconstruct 1744 // the item and thus our history list cannot be rebuilt. 1745 return null; 1746 } 1747 WebHistoryItem item = new WebHistoryItem(data); 1748 list.addHistoryItem(item); 1749 } 1750 // Grab the most recent copy to return to the caller. 1751 returnList = copyBackForwardList(); 1752 // Update the copy to have the correct index. 1753 returnList.setCurrentIndex(index); 1754 } 1755 // Restore private browsing setting. 1756 if (inState.getBoolean("privateBrowsingEnabled")) { 1757 getSettings().setPrivateBrowsingEnabled(true); 1758 } 1759 mZoomManager.restoreZoomState(inState); 1760 // Remove all pending messages because we are restoring previous 1761 // state. 1762 mWebViewCore.removeMessages(); 1763 // Send a restore state message. 1764 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1765 } 1766 return returnList; 1767 } 1768 1769 /** 1770 * Load the given url with the extra headers. 1771 * @param url The url of the resource to load. 1772 * @param extraHeaders The extra headers sent with this url. This should not 1773 * include the common headers like "user-agent". If it does, it 1774 * will be replaced by the intrinsic value of the WebView. 1775 */ 1776 public void loadUrl(String url, Map<String, String> extraHeaders) { 1777 switchOutDrawHistory(); 1778 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1779 arg.mUrl = url; 1780 arg.mExtraHeaders = extraHeaders; 1781 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1782 clearHelpers(); 1783 } 1784 1785 /** 1786 * Load the given url. 1787 * @param url The url of the resource to load. 1788 */ 1789 public void loadUrl(String url) { 1790 if (url == null) { 1791 return; 1792 } 1793 loadUrl(url, null); 1794 } 1795 1796 /** 1797 * Load the url with postData using "POST" method into the WebView. If url 1798 * is not a network url, it will be loaded with {link 1799 * {@link #loadUrl(String)} instead. 1800 * 1801 * @param url The url of the resource to load. 1802 * @param postData The data will be passed to "POST" request. 1803 */ 1804 public void postUrl(String url, byte[] postData) { 1805 if (URLUtil.isNetworkUrl(url)) { 1806 switchOutDrawHistory(); 1807 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1808 arg.mUrl = url; 1809 arg.mPostData = postData; 1810 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1811 clearHelpers(); 1812 } else { 1813 loadUrl(url); 1814 } 1815 } 1816 1817 /** 1818 * Load the given data into the WebView. This will load the data into 1819 * WebView using the data: scheme. Content loaded through this mechanism 1820 * does not have the ability to load content from the network. 1821 * @param data A String of data in the given encoding. The date must 1822 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1823 * %27, %3f respectively. 1824 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1825 * @param encoding The encoding of the data. i.e. utf-8, base64 1826 */ 1827 public void loadData(String data, String mimeType, String encoding) { 1828 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1829 } 1830 1831 /** 1832 * Load the given data into the WebView, use the provided URL as the base 1833 * URL for the content. The base URL is the URL that represents the page 1834 * that is loaded through this interface. As such, it is used to resolve any 1835 * relative URLs. The historyUrl is used for the history entry. 1836 * <p> 1837 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1838 * files through "file:///android_asset/" for the sub resources is more 1839 * restricted. If you provide null or empty string as baseUrl, you won't be 1840 * able to access asset files. If the baseUrl is anything other than 1841 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1842 * sub resources. 1843 * 1844 * @param baseUrl Url to resolve relative paths with, if null defaults to 1845 * "about:blank" 1846 * @param data A String of data in the given encoding. 1847 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1848 * defaults to "text/html" 1849 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1850 * @param historyUrl URL to use as the history entry. Can be null. 1851 */ 1852 public void loadDataWithBaseURL(String baseUrl, String data, 1853 String mimeType, String encoding, String historyUrl) { 1854 1855 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1856 loadData(data, mimeType, encoding); 1857 return; 1858 } 1859 switchOutDrawHistory(); 1860 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1861 arg.mBaseUrl = baseUrl; 1862 arg.mData = data; 1863 arg.mMimeType = mimeType; 1864 arg.mEncoding = encoding; 1865 arg.mHistoryUrl = historyUrl; 1866 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1867 clearHelpers(); 1868 } 1869 1870 /** 1871 * Saves the current view as a web archive. 1872 * 1873 * @param filename The filename where the archive should be placed. 1874 */ 1875 public void saveWebArchive(String filename) { 1876 saveWebArchive(filename, false, null); 1877 } 1878 1879 /* package */ static class SaveWebArchiveMessage { 1880 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1881 mBasename = basename; 1882 mAutoname = autoname; 1883 mCallback = callback; 1884 } 1885 1886 /* package */ final String mBasename; 1887 /* package */ final boolean mAutoname; 1888 /* package */ final ValueCallback<String> mCallback; 1889 /* package */ String mResultFile; 1890 } 1891 1892 /** 1893 * Saves the current view as a web archive. 1894 * 1895 * @param basename The filename where the archive should be placed. 1896 * @param autoname If false, takes basename to be a file. If true, basename 1897 * is assumed to be a directory in which a filename will be 1898 * chosen according to the url of the current page. 1899 * @param callback Called after the web archive has been saved. The 1900 * parameter for onReceiveValue will either be the filename 1901 * under which the file was saved, or null if saving the 1902 * file failed. 1903 */ 1904 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1905 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1906 new SaveWebArchiveMessage(basename, autoname, callback)); 1907 } 1908 1909 /** 1910 * Stop the current load. 1911 */ 1912 public void stopLoading() { 1913 // TODO: should we clear all the messages in the queue before sending 1914 // STOP_LOADING? 1915 switchOutDrawHistory(); 1916 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1917 } 1918 1919 /** 1920 * Reload the current url. 1921 */ 1922 public void reload() { 1923 clearHelpers(); 1924 switchOutDrawHistory(); 1925 mWebViewCore.sendMessage(EventHub.RELOAD); 1926 } 1927 1928 /** 1929 * Return true if this WebView has a back history item. 1930 * @return True iff this WebView has a back history item. 1931 */ 1932 public boolean canGoBack() { 1933 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1934 synchronized (l) { 1935 if (l.getClearPending()) { 1936 return false; 1937 } else { 1938 return l.getCurrentIndex() > 0; 1939 } 1940 } 1941 } 1942 1943 /** 1944 * Go back in the history of this WebView. 1945 */ 1946 public void goBack() { 1947 goBackOrForward(-1); 1948 } 1949 1950 /** 1951 * Return true if this WebView has a forward history item. 1952 * @return True iff this Webview has a forward history item. 1953 */ 1954 public boolean canGoForward() { 1955 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1956 synchronized (l) { 1957 if (l.getClearPending()) { 1958 return false; 1959 } else { 1960 return l.getCurrentIndex() < l.getSize() - 1; 1961 } 1962 } 1963 } 1964 1965 /** 1966 * Go forward in the history of this WebView. 1967 */ 1968 public void goForward() { 1969 goBackOrForward(1); 1970 } 1971 1972 /** 1973 * Return true if the page can go back or forward the given 1974 * number of steps. 1975 * @param steps The negative or positive number of steps to move the 1976 * history. 1977 */ 1978 public boolean canGoBackOrForward(int steps) { 1979 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1980 synchronized (l) { 1981 if (l.getClearPending()) { 1982 return false; 1983 } else { 1984 int newIndex = l.getCurrentIndex() + steps; 1985 return newIndex >= 0 && newIndex < l.getSize(); 1986 } 1987 } 1988 } 1989 1990 /** 1991 * Go to the history item that is the number of steps away from 1992 * the current item. Steps is negative if backward and positive 1993 * if forward. 1994 * @param steps The number of steps to take back or forward in the back 1995 * forward list. 1996 */ 1997 public void goBackOrForward(int steps) { 1998 goBackOrForward(steps, false); 1999 } 2000 2001 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2002 if (steps != 0) { 2003 clearHelpers(); 2004 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2005 ignoreSnapshot ? 1 : 0); 2006 } 2007 } 2008 2009 /** 2010 * Returns true if private browsing is enabled in this WebView. 2011 */ 2012 public boolean isPrivateBrowsingEnabled() { 2013 return getSettings().isPrivateBrowsingEnabled(); 2014 } 2015 2016 private void startPrivateBrowsing() { 2017 getSettings().setPrivateBrowsingEnabled(true); 2018 } 2019 2020 private boolean extendScroll(int y) { 2021 int finalY = mScroller.getFinalY(); 2022 int newY = pinLocY(finalY + y); 2023 if (newY == finalY) return false; 2024 mScroller.setFinalY(newY); 2025 mScroller.extendDuration(computeDuration(0, y)); 2026 return true; 2027 } 2028 2029 /** 2030 * Scroll the contents of the view up by half the view size 2031 * @param top true to jump to the top of the page 2032 * @return true if the page was scrolled 2033 */ 2034 public boolean pageUp(boolean top) { 2035 if (mNativeClass == 0) { 2036 return false; 2037 } 2038 nativeClearCursor(); // start next trackball movement from page edge 2039 if (top) { 2040 // go to the top of the document 2041 return pinScrollTo(mScrollX, 0, true, 0); 2042 } 2043 // Page up 2044 int h = getHeight(); 2045 int y; 2046 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2047 y = -h + PAGE_SCROLL_OVERLAP; 2048 } else { 2049 y = -h / 2; 2050 } 2051 mUserScroll = true; 2052 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2053 : extendScroll(y); 2054 } 2055 2056 /** 2057 * Scroll the contents of the view down by half the page size 2058 * @param bottom true to jump to bottom of page 2059 * @return true if the page was scrolled 2060 */ 2061 public boolean pageDown(boolean bottom) { 2062 if (mNativeClass == 0) { 2063 return false; 2064 } 2065 nativeClearCursor(); // start next trackball movement from page edge 2066 if (bottom) { 2067 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2068 } 2069 // Page down. 2070 int h = getHeight(); 2071 int y; 2072 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2073 y = h - PAGE_SCROLL_OVERLAP; 2074 } else { 2075 y = h / 2; 2076 } 2077 mUserScroll = true; 2078 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2079 : extendScroll(y); 2080 } 2081 2082 /** 2083 * Clear the view so that onDraw() will draw nothing but white background, 2084 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2085 */ 2086 public void clearView() { 2087 mContentWidth = 0; 2088 mContentHeight = 0; 2089 setBaseLayer(0, null); 2090 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2091 } 2092 2093 /** 2094 * Return a new picture that captures the current display of the webview. 2095 * This is a copy of the display, and will be unaffected if the webview 2096 * later loads a different URL. 2097 * 2098 * @return a picture containing the current contents of the view. Note this 2099 * picture is of the entire document, and is not restricted to the 2100 * bounds of the view. 2101 */ 2102 public Picture capturePicture() { 2103 if (mNativeClass == 0) return null; 2104 Picture result = new Picture(); 2105 nativeCopyBaseContentToPicture(result); 2106 return result; 2107 } 2108 2109 /** 2110 * Return true if the browser is displaying a TextView for text input. 2111 */ 2112 private boolean inEditingMode() { 2113 return mWebTextView != null && mWebTextView.getParent() != null; 2114 } 2115 2116 /** 2117 * Remove the WebTextView. 2118 */ 2119 private void clearTextEntry() { 2120 if (inEditingMode()) { 2121 mWebTextView.remove(); 2122 } else { 2123 // The keyboard may be open with the WebView as the served view 2124 hideSoftKeyboard(); 2125 } 2126 } 2127 2128 /** 2129 * Return the current scale of the WebView 2130 * @return The current scale. 2131 */ 2132 public float getScale() { 2133 return mZoomManager.getScale(); 2134 } 2135 2136 /** 2137 * Set the initial scale for the WebView. 0 means default. If 2138 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2139 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2140 * WebView starts will this value as initial scale. 2141 * 2142 * @param scaleInPercent The initial scale in percent. 2143 */ 2144 public void setInitialScale(int scaleInPercent) { 2145 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2146 } 2147 2148 /** 2149 * Invoke the graphical zoom picker widget for this WebView. This will 2150 * result in the zoom widget appearing on the screen to control the zoom 2151 * level of this WebView. 2152 */ 2153 public void invokeZoomPicker() { 2154 if (!getSettings().supportZoom()) { 2155 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2156 return; 2157 } 2158 clearHelpers(); 2159 mZoomManager.invokeZoomPicker(); 2160 } 2161 2162 /** 2163 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2164 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2165 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2166 * anchor does not have a url or if it is a JavaScript url, the type will 2167 * be UNKNOWN_TYPE and the url has to be retrieved through 2168 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2169 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2170 * the "extra" field. A type of 2171 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2172 * a child node. If a phone number is found, the HitTestResult type is set 2173 * to PHONE_TYPE and the phone number is set in the "extra" field of 2174 * HitTestResult. If a map address is found, the HitTestResult type is set 2175 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2176 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2177 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2178 * HitTestResult type is set to UNKNOWN_TYPE. 2179 */ 2180 public HitTestResult getHitTestResult() { 2181 return hitTestResult(mInitialHitTestResult); 2182 } 2183 2184 private HitTestResult hitTestResult(HitTestResult fallback) { 2185 if (mNativeClass == 0) { 2186 return null; 2187 } 2188 2189 HitTestResult result = new HitTestResult(); 2190 if (nativeHasCursorNode()) { 2191 if (nativeCursorIsTextInput()) { 2192 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2193 } else { 2194 String text = nativeCursorText(); 2195 if (text != null) { 2196 if (text.startsWith(SCHEME_TEL)) { 2197 result.setType(HitTestResult.PHONE_TYPE); 2198 result.setExtra(text.substring(SCHEME_TEL.length())); 2199 } else if (text.startsWith(SCHEME_MAILTO)) { 2200 result.setType(HitTestResult.EMAIL_TYPE); 2201 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2202 } else if (text.startsWith(SCHEME_GEO)) { 2203 result.setType(HitTestResult.GEO_TYPE); 2204 result.setExtra(URLDecoder.decode(text 2205 .substring(SCHEME_GEO.length()))); 2206 } else if (nativeCursorIsAnchor()) { 2207 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2208 result.setExtra(text); 2209 } 2210 } 2211 } 2212 } else if (fallback != null) { 2213 /* If webkit causes a rebuild while the long press is in progress, 2214 * the cursor node may be reset, even if it is still around. This 2215 * uses the cursor node saved when the touch began. Since the 2216 * nativeImageURI below only changes the result if it is successful, 2217 * this uses the data beneath the touch if available or the original 2218 * tap data otherwise. 2219 */ 2220 Log.v(LOGTAG, "hitTestResult use fallback"); 2221 result = fallback; 2222 } 2223 int type = result.getType(); 2224 if (type == HitTestResult.UNKNOWN_TYPE 2225 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2226 // Now check to see if it is an image. 2227 int contentX = viewToContentX(mLastTouchX + mScrollX); 2228 int contentY = viewToContentY(mLastTouchY + mScrollY); 2229 String text = nativeImageURI(contentX, contentY); 2230 if (text != null) { 2231 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2232 HitTestResult.IMAGE_TYPE : 2233 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2234 result.setExtra(text); 2235 } 2236 } 2237 return result; 2238 } 2239 2240 // Called by JNI when the DOM has changed the focus. Clear the focus so 2241 // that new keys will go to the newly focused field 2242 private void domChangedFocus() { 2243 if (inEditingMode()) { 2244 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2245 } 2246 } 2247 /** 2248 * Request the anchor or image element URL at the last tapped point. 2249 * If hrefMsg is null, this method returns immediately and does not 2250 * dispatch hrefMsg to its target. If the tapped point hits an image, 2251 * an anchor, or an image in an anchor, the message associates 2252 * strings in named keys in its data. The value paired with the key 2253 * may be an empty string. 2254 * 2255 * @param hrefMsg This message will be dispatched with the result of the 2256 * request. The message data contains three keys: 2257 * - "url" returns the anchor's href attribute. 2258 * - "title" returns the anchor's text. 2259 * - "src" returns the image's src attribute. 2260 */ 2261 public void requestFocusNodeHref(Message hrefMsg) { 2262 if (hrefMsg == null) { 2263 return; 2264 } 2265 int contentX = viewToContentX(mLastTouchX + mScrollX); 2266 int contentY = viewToContentY(mLastTouchY + mScrollY); 2267 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2268 contentX, contentY, hrefMsg); 2269 } 2270 2271 /** 2272 * Request the url of the image last touched by the user. msg will be sent 2273 * to its target with a String representing the url as its object. 2274 * 2275 * @param msg This message will be dispatched with the result of the request 2276 * as the data member with "url" as key. The result can be null. 2277 */ 2278 public void requestImageRef(Message msg) { 2279 if (0 == mNativeClass) return; // client isn't initialized 2280 int contentX = viewToContentX(mLastTouchX + mScrollX); 2281 int contentY = viewToContentY(mLastTouchY + mScrollY); 2282 String ref = nativeImageURI(contentX, contentY); 2283 Bundle data = msg.getData(); 2284 data.putString("url", ref); 2285 msg.setData(data); 2286 msg.sendToTarget(); 2287 } 2288 2289 static int pinLoc(int x, int viewMax, int docMax) { 2290// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2291 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2292 // pin the short document to the top/left of the screen 2293 x = 0; 2294// Log.d(LOGTAG, "--- center " + x); 2295 } else if (x < 0) { 2296 x = 0; 2297// Log.d(LOGTAG, "--- zero"); 2298 } else if (x + viewMax > docMax) { 2299 x = docMax - viewMax; 2300// Log.d(LOGTAG, "--- pin " + x); 2301 } 2302 return x; 2303 } 2304 2305 // Expects x in view coordinates 2306 int pinLocX(int x) { 2307 if (mInOverScrollMode) return x; 2308 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2309 } 2310 2311 // Expects y in view coordinates 2312 int pinLocY(int y) { 2313 if (mInOverScrollMode) return y; 2314 return pinLoc(y, getViewHeightWithTitle(), 2315 computeRealVerticalScrollRange() + getTitleHeight()); 2316 } 2317 2318 /** 2319 * A title bar which is embedded in this WebView, and scrolls along with it 2320 * vertically, but not horizontally. 2321 */ 2322 private View mTitleBar; 2323 2324 /** 2325 * Add or remove a title bar to be embedded into the WebView, and scroll 2326 * along with it vertically, while remaining in view horizontally. Pass 2327 * null to remove the title bar from the WebView, and return to drawing 2328 * the WebView normally without translating to account for the title bar. 2329 * @hide 2330 */ 2331 public void setEmbeddedTitleBar(View v) { 2332 if (mTitleBar == v) return; 2333 if (mTitleBar != null) { 2334 removeView(mTitleBar); 2335 } 2336 if (null != v) { 2337 addView(v, new AbsoluteLayout.LayoutParams( 2338 ViewGroup.LayoutParams.MATCH_PARENT, 2339 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2340 } 2341 mTitleBar = v; 2342 } 2343 2344 /** 2345 * Given a distance in view space, convert it to content space. Note: this 2346 * does not reflect translation, just scaling, so this should not be called 2347 * with coordinates, but should be called for dimensions like width or 2348 * height. 2349 */ 2350 private int viewToContentDimension(int d) { 2351 return Math.round(d * mZoomManager.getInvScale()); 2352 } 2353 2354 /** 2355 * Given an x coordinate in view space, convert it to content space. Also 2356 * may be used for absolute heights (such as for the WebTextView's 2357 * textSize, which is unaffected by the height of the title bar). 2358 */ 2359 /*package*/ int viewToContentX(int x) { 2360 return viewToContentDimension(x); 2361 } 2362 2363 /** 2364 * Given a y coordinate in view space, convert it to content space. 2365 * Takes into account the height of the title bar if there is one 2366 * embedded into the WebView. 2367 */ 2368 /*package*/ int viewToContentY(int y) { 2369 return viewToContentDimension(y - getTitleHeight()); 2370 } 2371 2372 /** 2373 * Given a x coordinate in view space, convert it to content space. 2374 * Returns the result as a float. 2375 */ 2376 private float viewToContentXf(int x) { 2377 return x * mZoomManager.getInvScale(); 2378 } 2379 2380 /** 2381 * Given a y coordinate in view space, convert it to content space. 2382 * Takes into account the height of the title bar if there is one 2383 * embedded into the WebView. Returns the result as a float. 2384 */ 2385 private float viewToContentYf(int y) { 2386 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2387 } 2388 2389 /** 2390 * Given a distance in content space, convert it to view space. Note: this 2391 * does not reflect translation, just scaling, so this should not be called 2392 * with coordinates, but should be called for dimensions like width or 2393 * height. 2394 */ 2395 /*package*/ int contentToViewDimension(int d) { 2396 return Math.round(d * mZoomManager.getScale()); 2397 } 2398 2399 /** 2400 * Given an x coordinate in content space, convert it to view 2401 * space. 2402 */ 2403 /*package*/ int contentToViewX(int x) { 2404 return contentToViewDimension(x); 2405 } 2406 2407 /** 2408 * Given a y coordinate in content space, convert it to view 2409 * space. Takes into account the height of the title bar. 2410 */ 2411 /*package*/ int contentToViewY(int y) { 2412 return contentToViewDimension(y) + getTitleHeight(); 2413 } 2414 2415 private Rect contentToViewRect(Rect x) { 2416 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2417 contentToViewX(x.right), contentToViewY(x.bottom)); 2418 } 2419 2420 /* To invalidate a rectangle in content coordinates, we need to transform 2421 the rect into view coordinates, so we can then call invalidate(...). 2422 2423 Normally, we would just call contentToView[XY](...), which eventually 2424 calls Math.round(coordinate * mActualScale). However, for invalidates, 2425 we need to account for the slop that occurs with antialiasing. To 2426 address that, we are a little more liberal in the size of the rect that 2427 we invalidate. 2428 2429 This liberal calculation calls floor() for the top/left, and ceil() for 2430 the bottom/right coordinates. This catches the possible extra pixels of 2431 antialiasing that we might have missed with just round(). 2432 */ 2433 2434 // Called by JNI to invalidate the View, given rectangle coordinates in 2435 // content space 2436 private void viewInvalidate(int l, int t, int r, int b) { 2437 final float scale = mZoomManager.getScale(); 2438 final int dy = getTitleHeight(); 2439 invalidate((int)Math.floor(l * scale), 2440 (int)Math.floor(t * scale) + dy, 2441 (int)Math.ceil(r * scale), 2442 (int)Math.ceil(b * scale) + dy); 2443 } 2444 2445 // Called by JNI to invalidate the View after a delay, given rectangle 2446 // coordinates in content space 2447 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2448 final float scale = mZoomManager.getScale(); 2449 final int dy = getTitleHeight(); 2450 postInvalidateDelayed(delay, 2451 (int)Math.floor(l * scale), 2452 (int)Math.floor(t * scale) + dy, 2453 (int)Math.ceil(r * scale), 2454 (int)Math.ceil(b * scale) + dy); 2455 } 2456 2457 private void invalidateContentRect(Rect r) { 2458 viewInvalidate(r.left, r.top, r.right, r.bottom); 2459 } 2460 2461 // stop the scroll animation, and don't let a subsequent fling add 2462 // to the existing velocity 2463 private void abortAnimation() { 2464 mScroller.abortAnimation(); 2465 mLastVelocity = 0; 2466 } 2467 2468 /* call from webcoreview.draw(), so we're still executing in the UI thread 2469 */ 2470 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2471 2472 // premature data from webkit, ignore 2473 if ((w | h) == 0) { 2474 return; 2475 } 2476 2477 // don't abort a scroll animation if we didn't change anything 2478 if (mContentWidth != w || mContentHeight != h) { 2479 // record new dimensions 2480 mContentWidth = w; 2481 mContentHeight = h; 2482 // If history Picture is drawn, don't update scroll. They will be 2483 // updated when we get out of that mode. 2484 if (!mDrawHistory) { 2485 // repin our scroll, taking into account the new content size 2486 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2487 if (!mScroller.isFinished()) { 2488 // We are in the middle of a scroll. Repin the final scroll 2489 // position. 2490 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2491 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2492 } 2493 } 2494 } 2495 contentSizeChanged(updateLayout); 2496 } 2497 2498 // Used to avoid sending many visible rect messages. 2499 private Rect mLastVisibleRectSent; 2500 private Rect mLastGlobalRect; 2501 2502 Rect sendOurVisibleRect() { 2503 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2504 Rect rect = new Rect(); 2505 calcOurContentVisibleRect(rect); 2506 // Rect.equals() checks for null input. 2507 if (!rect.equals(mLastVisibleRectSent)) { 2508 Point pos = new Point(rect.left, rect.top); 2509 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2510 nativeMoveGeneration(), mUserScroll ? 1 : 0, pos); 2511 mLastVisibleRectSent = rect; 2512 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2513 } 2514 Rect globalRect = new Rect(); 2515 if (getGlobalVisibleRect(globalRect) 2516 && !globalRect.equals(mLastGlobalRect)) { 2517 if (DebugFlags.WEB_VIEW) { 2518 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2519 + globalRect.top + ",r=" + globalRect.right + ",b=" 2520 + globalRect.bottom); 2521 } 2522 // TODO: the global offset is only used by windowRect() 2523 // in ChromeClientAndroid ; other clients such as touch 2524 // and mouse events could return view + screen relative points. 2525 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2526 mLastGlobalRect = globalRect; 2527 } 2528 return rect; 2529 } 2530 2531 // Sets r to be the visible rectangle of our webview in view coordinates 2532 private void calcOurVisibleRect(Rect r) { 2533 Point p = new Point(); 2534 getGlobalVisibleRect(r, p); 2535 r.offset(-p.x, -p.y); 2536 } 2537 2538 // Sets r to be our visible rectangle in content coordinates 2539 private void calcOurContentVisibleRect(Rect r) { 2540 calcOurVisibleRect(r); 2541 r.left = viewToContentX(r.left); 2542 // viewToContentY will remove the total height of the title bar. Add 2543 // the visible height back in to account for the fact that if the title 2544 // bar is partially visible, the part of the visible rect which is 2545 // displaying our content is displaced by that amount. 2546 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2547 r.right = viewToContentX(r.right); 2548 r.bottom = viewToContentY(r.bottom); 2549 } 2550 2551 // Sets r to be our visible rectangle in content coordinates. We use this 2552 // method on the native side to compute the position of the fixed layers. 2553 // Uses floating coordinates (necessary to correctly place elements when 2554 // the scale factor is not 1) 2555 private void calcOurContentVisibleRectF(RectF r) { 2556 Rect ri = new Rect(0,0,0,0); 2557 calcOurVisibleRect(ri); 2558 r.left = viewToContentXf(ri.left); 2559 // viewToContentY will remove the total height of the title bar. Add 2560 // the visible height back in to account for the fact that if the title 2561 // bar is partially visible, the part of the visible rect which is 2562 // displaying our content is displaced by that amount. 2563 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2564 r.right = viewToContentXf(ri.right); 2565 r.bottom = viewToContentYf(ri.bottom); 2566 } 2567 2568 static class ViewSizeData { 2569 int mWidth; 2570 int mHeight; 2571 int mTextWrapWidth; 2572 int mAnchorX; 2573 int mAnchorY; 2574 float mScale; 2575 boolean mIgnoreHeight; 2576 } 2577 2578 /** 2579 * Compute unzoomed width and height, and if they differ from the last 2580 * values we sent, send them to webkit (to be used as new viewport) 2581 * 2582 * @param force ensures that the message is sent to webkit even if the width 2583 * or height has not changed since the last message 2584 * 2585 * @return true if new values were sent 2586 */ 2587 boolean sendViewSizeZoom(boolean force) { 2588 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2589 2590 int viewWidth = getViewWidth(); 2591 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2592 int newHeight = Math.round((getViewHeightWithTitle() - getTitleHeight()) * mZoomManager.getInvScale()); 2593 /* 2594 * Because the native side may have already done a layout before the 2595 * View system was able to measure us, we have to send a height of 0 to 2596 * remove excess whitespace when we grow our width. This will trigger a 2597 * layout and a change in content size. This content size change will 2598 * mean that contentSizeChanged will either call this method directly or 2599 * indirectly from onSizeChanged. 2600 */ 2601 if (newWidth > mLastWidthSent && mWrapContent) { 2602 newHeight = 0; 2603 } 2604 // Avoid sending another message if the dimensions have not changed. 2605 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force) { 2606 ViewSizeData data = new ViewSizeData(); 2607 data.mWidth = newWidth; 2608 data.mHeight = newHeight; 2609 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2610 data.mScale = mZoomManager.getScale(); 2611 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2612 && !mHeightCanMeasure; 2613 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2614 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2615 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2616 mLastWidthSent = newWidth; 2617 mLastHeightSent = newHeight; 2618 mZoomManager.clearDocumentAnchor(); 2619 return true; 2620 } 2621 return false; 2622 } 2623 2624 private int computeRealHorizontalScrollRange() { 2625 if (mDrawHistory) { 2626 return mHistoryWidth; 2627 } else { 2628 // to avoid rounding error caused unnecessary scrollbar, use floor 2629 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2630 } 2631 } 2632 2633 @Override 2634 protected int computeHorizontalScrollRange() { 2635 int range = computeRealHorizontalScrollRange(); 2636 2637 // Adjust reported range if overscrolled to compress the scroll bars 2638 final int scrollX = mScrollX; 2639 final int overscrollRight = computeMaxScrollX(); 2640 if (scrollX < 0) { 2641 range -= scrollX; 2642 } else if (scrollX > overscrollRight) { 2643 range += scrollX - overscrollRight; 2644 } 2645 2646 return range; 2647 } 2648 2649 @Override 2650 protected int computeHorizontalScrollOffset() { 2651 return Math.max(mScrollX, 0); 2652 } 2653 2654 private int computeRealVerticalScrollRange() { 2655 if (mDrawHistory) { 2656 return mHistoryHeight; 2657 } else { 2658 // to avoid rounding error caused unnecessary scrollbar, use floor 2659 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2660 } 2661 } 2662 2663 @Override 2664 protected int computeVerticalScrollRange() { 2665 int range = computeRealVerticalScrollRange(); 2666 2667 // Adjust reported range if overscrolled to compress the scroll bars 2668 final int scrollY = mScrollY; 2669 final int overscrollBottom = computeMaxScrollY(); 2670 if (scrollY < 0) { 2671 range -= scrollY; 2672 } else if (scrollY > overscrollBottom) { 2673 range += scrollY - overscrollBottom; 2674 } 2675 2676 return range; 2677 } 2678 2679 @Override 2680 protected int computeVerticalScrollOffset() { 2681 return Math.max(mScrollY - getTitleHeight(), 0); 2682 } 2683 2684 @Override 2685 protected int computeVerticalScrollExtent() { 2686 return getViewHeight(); 2687 } 2688 2689 /** @hide */ 2690 @Override 2691 protected void onDrawVerticalScrollBar(Canvas canvas, 2692 Drawable scrollBar, 2693 int l, int t, int r, int b) { 2694 if (mScrollY < 0) { 2695 t -= mScrollY; 2696 } 2697 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2698 scrollBar.draw(canvas); 2699 } 2700 2701 @Override 2702 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2703 boolean clampedY) { 2704 // Special-case layer scrolling so that we do not trigger normal scroll 2705 // updating. 2706 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2707 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2708 mScrollingLayerRect.left = scrollX; 2709 mScrollingLayerRect.top = scrollY; 2710 invalidate(); 2711 return; 2712 } 2713 mInOverScrollMode = false; 2714 int maxX = computeMaxScrollX(); 2715 int maxY = computeMaxScrollY(); 2716 if (maxX == 0) { 2717 // do not over scroll x if the page just fits the screen 2718 scrollX = pinLocX(scrollX); 2719 } else if (scrollX < 0 || scrollX > maxX) { 2720 mInOverScrollMode = true; 2721 } 2722 if (scrollY < 0 || scrollY > maxY) { 2723 mInOverScrollMode = true; 2724 } 2725 2726 int oldX = mScrollX; 2727 int oldY = mScrollY; 2728 2729 super.scrollTo(scrollX, scrollY); 2730 2731 if (mOverScrollGlow != null) { 2732 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2733 } 2734 } 2735 2736 /** 2737 * Get the url for the current page. This is not always the same as the url 2738 * passed to WebViewClient.onPageStarted because although the load for 2739 * that url has begun, the current page may not have changed. 2740 * @return The url for the current page. 2741 */ 2742 public String getUrl() { 2743 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2744 return h != null ? h.getUrl() : null; 2745 } 2746 2747 /** 2748 * Get the original url for the current page. This is not always the same 2749 * as the url passed to WebViewClient.onPageStarted because although the 2750 * load for that url has begun, the current page may not have changed. 2751 * Also, there may have been redirects resulting in a different url to that 2752 * originally requested. 2753 * @return The url that was originally requested for the current page. 2754 */ 2755 public String getOriginalUrl() { 2756 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2757 return h != null ? h.getOriginalUrl() : null; 2758 } 2759 2760 /** 2761 * Get the title for the current page. This is the title of the current page 2762 * until WebViewClient.onReceivedTitle is called. 2763 * @return The title for the current page. 2764 */ 2765 public String getTitle() { 2766 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2767 return h != null ? h.getTitle() : null; 2768 } 2769 2770 /** 2771 * Get the favicon for the current page. This is the favicon of the current 2772 * page until WebViewClient.onReceivedIcon is called. 2773 * @return The favicon for the current page. 2774 */ 2775 public Bitmap getFavicon() { 2776 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2777 return h != null ? h.getFavicon() : null; 2778 } 2779 2780 /** 2781 * Get the touch icon url for the apple-touch-icon <link> element, or 2782 * a URL on this site's server pointing to the standard location of a 2783 * touch icon. 2784 * @hide 2785 */ 2786 public String getTouchIconUrl() { 2787 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2788 return h != null ? h.getTouchIconUrl() : null; 2789 } 2790 2791 /** 2792 * Get the progress for the current page. 2793 * @return The progress for the current page between 0 and 100. 2794 */ 2795 public int getProgress() { 2796 return mCallbackProxy.getProgress(); 2797 } 2798 2799 /** 2800 * @return the height of the HTML content. 2801 */ 2802 public int getContentHeight() { 2803 return mContentHeight; 2804 } 2805 2806 /** 2807 * @return the width of the HTML content. 2808 * @hide 2809 */ 2810 public int getContentWidth() { 2811 return mContentWidth; 2812 } 2813 2814 /** 2815 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2816 * is a global requests, not restricted to just this webview. This can be 2817 * useful if the application has been paused. 2818 */ 2819 public void pauseTimers() { 2820 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2821 } 2822 2823 /** 2824 * Resume all layout, parsing, and JavaScript timers for all webviews. 2825 * This will resume dispatching all timers. 2826 */ 2827 public void resumeTimers() { 2828 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2829 } 2830 2831 /** 2832 * Call this to pause any extra processing associated with this WebView and 2833 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2834 * is taken offscreen, this could be called to reduce unnecessary CPU or 2835 * network traffic. When the WebView is again "active", call onResume(). 2836 * 2837 * Note that this differs from pauseTimers(), which affects all WebViews. 2838 */ 2839 public void onPause() { 2840 if (!mIsPaused) { 2841 mIsPaused = true; 2842 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2843 } 2844 } 2845 2846 /** 2847 * Call this to resume a WebView after a previous call to onPause(). 2848 */ 2849 public void onResume() { 2850 if (mIsPaused) { 2851 mIsPaused = false; 2852 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2853 } 2854 } 2855 2856 /** 2857 * Returns true if the view is paused, meaning onPause() was called. Calling 2858 * onResume() sets the paused state back to false. 2859 * @hide 2860 */ 2861 public boolean isPaused() { 2862 return mIsPaused; 2863 } 2864 2865 /** 2866 * Call this to inform the view that memory is low so that it can 2867 * free any available memory. 2868 */ 2869 public void freeMemory() { 2870 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2871 } 2872 2873 /** 2874 * Clear the resource cache. Note that the cache is per-application, so 2875 * this will clear the cache for all WebViews used. 2876 * 2877 * @param includeDiskFiles If false, only the RAM cache is cleared. 2878 */ 2879 public void clearCache(boolean includeDiskFiles) { 2880 // Note: this really needs to be a static method as it clears cache for all 2881 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2882 // we can't make this static. 2883 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2884 includeDiskFiles ? 1 : 0, 0); 2885 } 2886 2887 /** 2888 * Make sure that clearing the form data removes the adapter from the 2889 * currently focused textfield if there is one. 2890 */ 2891 public void clearFormData() { 2892 if (inEditingMode()) { 2893 AutoCompleteAdapter adapter = null; 2894 mWebTextView.setAdapterCustom(adapter); 2895 } 2896 } 2897 2898 /** 2899 * Tell the WebView to clear its internal back/forward list. 2900 */ 2901 public void clearHistory() { 2902 mCallbackProxy.getBackForwardList().setClearPending(); 2903 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2904 } 2905 2906 /** 2907 * Clear the SSL preferences table stored in response to proceeding with SSL 2908 * certificate errors. 2909 */ 2910 public void clearSslPreferences() { 2911 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2912 } 2913 2914 /** 2915 * Return the WebBackForwardList for this WebView. This contains the 2916 * back/forward list for use in querying each item in the history stack. 2917 * This is a copy of the private WebBackForwardList so it contains only a 2918 * snapshot of the current state. Multiple calls to this method may return 2919 * different objects. The object returned from this method will not be 2920 * updated to reflect any new state. 2921 */ 2922 public WebBackForwardList copyBackForwardList() { 2923 return mCallbackProxy.getBackForwardList().clone(); 2924 } 2925 2926 /* 2927 * Highlight and scroll to the next occurance of String in findAll. 2928 * Wraps the page infinitely, and scrolls. Must be called after 2929 * calling findAll. 2930 * 2931 * @param forward Direction to search. 2932 */ 2933 public void findNext(boolean forward) { 2934 if (0 == mNativeClass) return; // client isn't initialized 2935 nativeFindNext(forward); 2936 } 2937 2938 /* 2939 * Find all instances of find on the page and highlight them. 2940 * @param find String to find. 2941 * @return int The number of occurances of the String "find" 2942 * that were found. 2943 */ 2944 public int findAll(String find) { 2945 if (0 == mNativeClass) return 0; // client isn't initialized 2946 int result = find != null ? nativeFindAll(find.toLowerCase(), 2947 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 2948 invalidate(); 2949 mLastFind = find; 2950 return result; 2951 } 2952 2953 /** 2954 * Start an ActionMode for finding text in this WebView. 2955 * @param text If non-null, will be the initial text to search for. 2956 * Otherwise, the last String searched for in this WebView will 2957 * be used to start. 2958 * @param showIme If true, show the IME, assuming the user will begin typing. 2959 * If false and text is non-null, perform a find all. 2960 * @return boolean True if the find dialog is shown, false otherwise. 2961 */ 2962 public boolean showFindDialog(String text, boolean showIme) { 2963 FindActionModeCallback callback = new FindActionModeCallback(mContext); 2964 if (startActionMode(callback) == null) { 2965 // Could not start the action mode, so end Find on page 2966 return false; 2967 } 2968 mFindCallback = callback; 2969 setFindIsUp(true); 2970 mFindCallback.setWebView(this); 2971 if (showIme) { 2972 mFindCallback.showSoftInput(); 2973 } else if (text != null) { 2974 mFindCallback.setText(text); 2975 mFindCallback.findAll(); 2976 return true; 2977 } 2978 if (text == null) { 2979 text = mLastFind; 2980 } 2981 if (text != null) { 2982 mFindCallback.setText(text); 2983 } 2984 return true; 2985 } 2986 2987 /** 2988 * Keep track of the find callback so that we can remove its titlebar if 2989 * necessary. 2990 */ 2991 private FindActionModeCallback mFindCallback; 2992 2993 /** 2994 * Toggle whether the find dialog is showing, for both native and Java. 2995 */ 2996 private void setFindIsUp(boolean isUp) { 2997 mFindIsUp = isUp; 2998 if (0 == mNativeClass) return; // client isn't initialized 2999 nativeSetFindIsUp(isUp); 3000 } 3001 3002 /** 3003 * Return the index of the currently highlighted match. 3004 */ 3005 int findIndex() { 3006 if (0 == mNativeClass) return -1; 3007 return nativeFindIndex(); 3008 } 3009 3010 // Used to know whether the find dialog is open. Affects whether 3011 // or not we draw the highlights for matches. 3012 private boolean mFindIsUp; 3013 3014 // Keep track of the last string sent, so we can search again when find is 3015 // reopened. 3016 private String mLastFind; 3017 3018 /** 3019 * Return the first substring consisting of the address of a physical 3020 * location. Currently, only addresses in the United States are detected, 3021 * and consist of: 3022 * - a house number 3023 * - a street name 3024 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3025 * - a city name 3026 * - a state or territory, either spelled out or two-letter abbr. 3027 * - an optional 5 digit or 9 digit zip code. 3028 * 3029 * All names must be correctly capitalized, and the zip code, if present, 3030 * must be valid for the state. The street type must be a standard USPS 3031 * spelling or abbreviation. The state or territory must also be spelled 3032 * or abbreviated using USPS standards. The house number may not exceed 3033 * five digits. 3034 * @param addr The string to search for addresses. 3035 * 3036 * @return the address, or if no address is found, return null. 3037 */ 3038 public static String findAddress(String addr) { 3039 return findAddress(addr, false); 3040 } 3041 3042 /** 3043 * @hide 3044 * Return the first substring consisting of the address of a physical 3045 * location. Currently, only addresses in the United States are detected, 3046 * and consist of: 3047 * - a house number 3048 * - a street name 3049 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3050 * - a city name 3051 * - a state or territory, either spelled out or two-letter abbr. 3052 * - an optional 5 digit or 9 digit zip code. 3053 * 3054 * Names are optionally capitalized, and the zip code, if present, 3055 * must be valid for the state. The street type must be a standard USPS 3056 * spelling or abbreviation. The state or territory must also be spelled 3057 * or abbreviated using USPS standards. The house number may not exceed 3058 * five digits. 3059 * @param addr The string to search for addresses. 3060 * @param caseInsensitive addr Set to true to make search ignore case. 3061 * 3062 * @return the address, or if no address is found, return null. 3063 */ 3064 public static String findAddress(String addr, boolean caseInsensitive) { 3065 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3066 } 3067 3068 /* 3069 * Clear the highlighting surrounding text matches created by findAll. 3070 */ 3071 public void clearMatches() { 3072 if (mNativeClass == 0) 3073 return; 3074 nativeSetFindIsEmpty(); 3075 invalidate(); 3076 } 3077 3078 /** 3079 * Called when the find ActionMode ends. 3080 */ 3081 void notifyFindDialogDismissed() { 3082 mFindCallback = null; 3083 if (mWebViewCore == null) { 3084 return; 3085 } 3086 clearMatches(); 3087 setFindIsUp(false); 3088 // Now that the dialog has been removed, ensure that we scroll to a 3089 // location that is not beyond the end of the page. 3090 pinScrollTo(mScrollX, mScrollY, false, 0); 3091 invalidate(); 3092 } 3093 3094 /** 3095 * Query the document to see if it contains any image references. The 3096 * message object will be dispatched with arg1 being set to 1 if images 3097 * were found and 0 if the document does not reference any images. 3098 * @param response The message that will be dispatched with the result. 3099 */ 3100 public void documentHasImages(Message response) { 3101 if (response == null) { 3102 return; 3103 } 3104 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3105 } 3106 3107 /** 3108 * Request the scroller to abort any ongoing animation 3109 * 3110 * @hide 3111 */ 3112 public void stopScroll() { 3113 mScroller.forceFinished(true); 3114 mLastVelocity = 0; 3115 } 3116 3117 @Override 3118 public void computeScroll() { 3119 if (mScroller.computeScrollOffset()) { 3120 int oldX = mScrollX; 3121 int oldY = mScrollY; 3122 int x = mScroller.getCurrX(); 3123 int y = mScroller.getCurrY(); 3124 invalidate(); // So we draw again 3125 3126 if (!mScroller.isFinished()) { 3127 int rangeX = computeMaxScrollX(); 3128 int rangeY = computeMaxScrollY(); 3129 int overflingDistance = mOverflingDistance; 3130 3131 // Use the layer's scroll data if needed. 3132 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3133 oldX = mScrollingLayerRect.left; 3134 oldY = mScrollingLayerRect.top; 3135 rangeX = mScrollingLayerRect.right; 3136 rangeY = mScrollingLayerRect.bottom; 3137 // No overscrolling for layers. 3138 overflingDistance = 0; 3139 } 3140 3141 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3142 rangeX, rangeY, 3143 overflingDistance, overflingDistance, false); 3144 3145 if (mOverScrollGlow != null) { 3146 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3147 } 3148 } else { 3149 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3150 mScrollX = x; 3151 mScrollY = y; 3152 } else { 3153 // Update the layer position instead of WebView. 3154 nativeScrollLayer(mScrollingLayer, x, y); 3155 mScrollingLayerRect.left = x; 3156 mScrollingLayerRect.top = y; 3157 } 3158 abortAnimation(); 3159 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3160 WebViewCore.resumePriority(); 3161 if (!mSelectingText) { 3162 WebViewCore.resumeUpdatePicture(mWebViewCore); 3163 } 3164 } 3165 } else { 3166 super.computeScroll(); 3167 } 3168 } 3169 3170 private static int computeDuration(int dx, int dy) { 3171 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3172 int duration = distance * 1000 / STD_SPEED; 3173 return Math.min(duration, MAX_DURATION); 3174 } 3175 3176 // helper to pin the scrollBy parameters (already in view coordinates) 3177 // returns true if the scroll was changed 3178 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3179 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3180 } 3181 // helper to pin the scrollTo parameters (already in view coordinates) 3182 // returns true if the scroll was changed 3183 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3184 x = pinLocX(x); 3185 y = pinLocY(y); 3186 int dx = x - mScrollX; 3187 int dy = y - mScrollY; 3188 3189 if ((dx | dy) == 0) { 3190 return false; 3191 } 3192 abortAnimation(); 3193 if (animate) { 3194 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3195 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3196 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3197 awakenScrollBars(mScroller.getDuration()); 3198 invalidate(); 3199 } else { 3200 scrollTo(x, y); 3201 } 3202 return true; 3203 } 3204 3205 // Scale from content to view coordinates, and pin. 3206 // Also called by jni webview.cpp 3207 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3208 if (mDrawHistory) { 3209 // disallow WebView to change the scroll position as History Picture 3210 // is used in the view system. 3211 // TODO: as we switchOutDrawHistory when trackball or navigation 3212 // keys are hit, this should be safe. Right? 3213 return false; 3214 } 3215 cx = contentToViewDimension(cx); 3216 cy = contentToViewDimension(cy); 3217 if (mHeightCanMeasure) { 3218 // move our visible rect according to scroll request 3219 if (cy != 0) { 3220 Rect tempRect = new Rect(); 3221 calcOurVisibleRect(tempRect); 3222 tempRect.offset(cx, cy); 3223 requestRectangleOnScreen(tempRect); 3224 } 3225 // FIXME: We scroll horizontally no matter what because currently 3226 // ScrollView and ListView will not scroll horizontally. 3227 // FIXME: Why do we only scroll horizontally if there is no 3228 // vertical scroll? 3229// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3230 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3231 } else { 3232 return pinScrollBy(cx, cy, animate, 0); 3233 } 3234 } 3235 3236 /** 3237 * Called by CallbackProxy when the page starts loading. 3238 * @param url The URL of the page which has started loading. 3239 */ 3240 /* package */ void onPageStarted(String url) { 3241 // every time we start a new page, we want to reset the 3242 // WebView certificate: if the new site is secure, we 3243 // will reload it and get a new certificate set; 3244 // if the new site is not secure, the certificate must be 3245 // null, and that will be the case 3246 setCertificate(null); 3247 3248 // reset the flag since we set to true in if need after 3249 // loading is see onPageFinished(Url) 3250 mAccessibilityScriptInjected = false; 3251 } 3252 3253 /** 3254 * Called by CallbackProxy when the page finishes loading. 3255 * @param url The URL of the page which has finished loading. 3256 */ 3257 /* package */ void onPageFinished(String url) { 3258 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3259 // If the user is now on a different page, or has scrolled the page 3260 // past the point where the title bar is offscreen, ignore the 3261 // scroll request. 3262 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3263 && mScrollX == 0 && mScrollY == 0) { 3264 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3265 SLIDE_TITLE_DURATION); 3266 } 3267 mPageThatNeedsToSlideTitleBarOffScreen = null; 3268 } 3269 3270 injectAccessibilityForUrl(url); 3271 } 3272 3273 /** 3274 * This method injects accessibility in the loaded document if accessibility 3275 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3276 * If no URL specific script is found or JavaScript is disabled we fallback to 3277 * the default {@link AccessibilityInjector} implementation. 3278 * </p> 3279 * If the URL has the "axs" paramter set to 1 it has already done the 3280 * script injection so we do nothing. If the parameter is set to 0 3281 * the URL opts out accessibility script injection so we fall back to 3282 * the default {@link AccessibilityInjector}. 3283 * </p> 3284 * Note: If the user has not opted-in the accessibility script injection no scripts 3285 * are injected rather the default {@link AccessibilityInjector} implementation 3286 * is used. 3287 * 3288 * @param url The URL loaded by this {@link WebView}. 3289 */ 3290 private void injectAccessibilityForUrl(String url) { 3291 if (mWebViewCore == null) { 3292 return; 3293 } 3294 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3295 3296 if (!accessibilityManager.isEnabled()) { 3297 // it is possible that accessibility was turned off between reloads 3298 ensureAccessibilityScriptInjectorInstance(false); 3299 return; 3300 } 3301 3302 if (!getSettings().getJavaScriptEnabled()) { 3303 // no JS so we fallback to the basic buil-in support 3304 ensureAccessibilityScriptInjectorInstance(true); 3305 return; 3306 } 3307 3308 // check the URL "axs" parameter to choose appropriate action 3309 int axsParameterValue = getAxsUrlParameterValue(url); 3310 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3311 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3312 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3313 if (onDeviceScriptInjectionEnabled) { 3314 ensureAccessibilityScriptInjectorInstance(false); 3315 // neither script injected nor script injection opted out => we inject 3316 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3317 // TODO: Set this flag after successfull script injection. Maybe upon injection 3318 // the chooser should update the meta tag and we check it to declare success 3319 mAccessibilityScriptInjected = true; 3320 } else { 3321 // injection disabled so we fallback to the basic built-in support 3322 ensureAccessibilityScriptInjectorInstance(true); 3323 } 3324 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3325 // injection opted out so we fallback to the basic buil-in support 3326 ensureAccessibilityScriptInjectorInstance(true); 3327 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3328 ensureAccessibilityScriptInjectorInstance(false); 3329 // the URL provides accessibility but we still need to add our generic script 3330 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3331 } else { 3332 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3333 } 3334 } 3335 3336 /** 3337 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3338 * 3339 * @param present True to ensure an insance, false to ensure no instance. 3340 */ 3341 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3342 if (present) { 3343 if (mAccessibilityInjector == null) { 3344 mAccessibilityInjector = new AccessibilityInjector(this); 3345 } 3346 } else { 3347 mAccessibilityInjector = null; 3348 } 3349 } 3350 3351 /** 3352 * Gets the "axs" URL parameter value. 3353 * 3354 * @param url A url to fetch the paramter from. 3355 * @return The parameter value if such, -1 otherwise. 3356 */ 3357 private int getAxsUrlParameterValue(String url) { 3358 if (mMatchAxsUrlParameterPattern == null) { 3359 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3360 } 3361 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3362 if (matcher.find()) { 3363 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3364 return Integer.parseInt(keyValuePair.split("=")[1]); 3365 } 3366 return -1; 3367 } 3368 3369 /** 3370 * The URL of a page that sent a message to scroll the title bar off screen. 3371 * 3372 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3373 * title bar off the screen. Sometimes, the scroll position is set before 3374 * the page finishes loading. Rather than scrolling while the page is still 3375 * loading, keep track of the URL and new scroll position so we can perform 3376 * the scroll once the page finishes loading. 3377 */ 3378 private String mPageThatNeedsToSlideTitleBarOffScreen; 3379 3380 /** 3381 * The destination Y scroll position to be used when the page finishes 3382 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3383 */ 3384 private int mYDistanceToSlideTitleOffScreen; 3385 3386 // scale from content to view coordinates, and pin 3387 // return true if pin caused the final x/y different than the request cx/cy, 3388 // and a future scroll may reach the request cx/cy after our size has 3389 // changed 3390 // return false if the view scroll to the exact position as it is requested, 3391 // where negative numbers are taken to mean 0 3392 private boolean setContentScrollTo(int cx, int cy) { 3393 if (mDrawHistory) { 3394 // disallow WebView to change the scroll position as History Picture 3395 // is used in the view system. 3396 // One known case where this is called is that WebCore tries to 3397 // restore the scroll position. As history Picture already uses the 3398 // saved scroll position, it is ok to skip this. 3399 return false; 3400 } 3401 int vx; 3402 int vy; 3403 if ((cx | cy) == 0) { 3404 // If the page is being scrolled to (0,0), do not add in the title 3405 // bar's height, and simply scroll to (0,0). (The only other work 3406 // in contentToView_ is to multiply, so this would not change 0.) 3407 vx = 0; 3408 vy = 0; 3409 } else { 3410 vx = contentToViewX(cx); 3411 vy = contentToViewY(cy); 3412 } 3413// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3414// vx + " " + vy + "]"); 3415 // Some mobile sites attempt to scroll the title bar off the page by 3416 // scrolling to (0,1). If we are at the top left corner of the 3417 // page, assume this is an attempt to scroll off the title bar, and 3418 // animate the title bar off screen slowly enough that the user can see 3419 // it. 3420 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3421 && mTitleBar != null) { 3422 // FIXME: 100 should be defined somewhere as our max progress. 3423 if (getProgress() < 100) { 3424 // Wait to scroll the title bar off screen until the page has 3425 // finished loading. Keep track of the URL and the destination 3426 // Y position 3427 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3428 mYDistanceToSlideTitleOffScreen = vy; 3429 } else { 3430 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3431 } 3432 // Since we are animating, we have not yet reached the desired 3433 // scroll position. Do not return true to request another attempt 3434 return false; 3435 } 3436 pinScrollTo(vx, vy, false, 0); 3437 // If the request was to scroll to a negative coordinate, treat it as if 3438 // it was a request to scroll to 0 3439 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3440 return true; 3441 } else { 3442 return false; 3443 } 3444 } 3445 3446 // scale from content to view coordinates, and pin 3447 private void spawnContentScrollTo(int cx, int cy) { 3448 if (mDrawHistory) { 3449 // disallow WebView to change the scroll position as History Picture 3450 // is used in the view system. 3451 return; 3452 } 3453 int vx = contentToViewX(cx); 3454 int vy = contentToViewY(cy); 3455 pinScrollTo(vx, vy, true, 0); 3456 } 3457 3458 /** 3459 * These are from webkit, and are in content coordinate system (unzoomed) 3460 */ 3461 private void contentSizeChanged(boolean updateLayout) { 3462 // suppress 0,0 since we usually see real dimensions soon after 3463 // this avoids drawing the prev content in a funny place. If we find a 3464 // way to consolidate these notifications, this check may become 3465 // obsolete 3466 if ((mContentWidth | mContentHeight) == 0) { 3467 return; 3468 } 3469 3470 if (mHeightCanMeasure) { 3471 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3472 || updateLayout) { 3473 requestLayout(); 3474 } 3475 } else if (mWidthCanMeasure) { 3476 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3477 || updateLayout) { 3478 requestLayout(); 3479 } 3480 } else { 3481 // If we don't request a layout, try to send our view size to the 3482 // native side to ensure that WebCore has the correct dimensions. 3483 sendViewSizeZoom(false); 3484 } 3485 } 3486 3487 /** 3488 * Set the WebViewClient that will receive various notifications and 3489 * requests. This will replace the current handler. 3490 * @param client An implementation of WebViewClient. 3491 */ 3492 public void setWebViewClient(WebViewClient client) { 3493 mCallbackProxy.setWebViewClient(client); 3494 } 3495 3496 /** 3497 * Gets the WebViewClient 3498 * @return the current WebViewClient instance. 3499 * 3500 *@hide pending API council approval. 3501 */ 3502 public WebViewClient getWebViewClient() { 3503 return mCallbackProxy.getWebViewClient(); 3504 } 3505 3506 /** 3507 * Register the interface to be used when content can not be handled by 3508 * the rendering engine, and should be downloaded instead. This will replace 3509 * the current handler. 3510 * @param listener An implementation of DownloadListener. 3511 */ 3512 public void setDownloadListener(DownloadListener listener) { 3513 mCallbackProxy.setDownloadListener(listener); 3514 } 3515 3516 /** 3517 * Set the chrome handler. This is an implementation of WebChromeClient for 3518 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3519 * This will replace the current handler. 3520 * @param client An implementation of WebChromeClient. 3521 */ 3522 public void setWebChromeClient(WebChromeClient client) { 3523 mCallbackProxy.setWebChromeClient(client); 3524 } 3525 3526 /** 3527 * Gets the chrome handler. 3528 * @return the current WebChromeClient instance. 3529 * 3530 * @hide API council approval. 3531 */ 3532 public WebChromeClient getWebChromeClient() { 3533 return mCallbackProxy.getWebChromeClient(); 3534 } 3535 3536 /** 3537 * Set the back/forward list client. This is an implementation of 3538 * WebBackForwardListClient for handling new items and changes in the 3539 * history index. 3540 * @param client An implementation of WebBackForwardListClient. 3541 * {@hide} 3542 */ 3543 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3544 mCallbackProxy.setWebBackForwardListClient(client); 3545 } 3546 3547 /** 3548 * Gets the WebBackForwardListClient. 3549 * {@hide} 3550 */ 3551 public WebBackForwardListClient getWebBackForwardListClient() { 3552 return mCallbackProxy.getWebBackForwardListClient(); 3553 } 3554 3555 /** 3556 * Set the Picture listener. This is an interface used to receive 3557 * notifications of a new Picture. 3558 * @param listener An implementation of WebView.PictureListener. 3559 */ 3560 public void setPictureListener(PictureListener listener) { 3561 mPictureListener = listener; 3562 } 3563 3564 /** 3565 * {@hide} 3566 */ 3567 /* FIXME: Debug only! Remove for SDK! */ 3568 public void externalRepresentation(Message callback) { 3569 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3570 } 3571 3572 /** 3573 * {@hide} 3574 */ 3575 /* FIXME: Debug only! Remove for SDK! */ 3576 public void documentAsText(Message callback) { 3577 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3578 } 3579 3580 /** 3581 * Use this function to bind an object to JavaScript so that the 3582 * methods can be accessed from JavaScript. 3583 * <p><strong>IMPORTANT:</strong> 3584 * <ul> 3585 * <li> Using addJavascriptInterface() allows JavaScript to control your 3586 * application. This can be a very useful feature or a dangerous security 3587 * issue. When the HTML in the WebView is untrustworthy (for example, part 3588 * or all of the HTML is provided by some person or process), then an 3589 * attacker could inject HTML that will execute your code and possibly any 3590 * code of the attacker's choosing.<br> 3591 * Do not use addJavascriptInterface() unless all of the HTML in this 3592 * WebView was written by you.</li> 3593 * <li> The Java object that is bound runs in another thread and not in 3594 * the thread that it was constructed in.</li> 3595 * </ul></p> 3596 * @param obj The class instance to bind to JavaScript, null instances are 3597 * ignored. 3598 * @param interfaceName The name to used to expose the instance in 3599 * JavaScript. 3600 */ 3601 public void addJavascriptInterface(Object obj, String interfaceName) { 3602 if (obj == null) { 3603 return; 3604 } 3605 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3606 arg.mObject = obj; 3607 arg.mInterfaceName = interfaceName; 3608 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3609 } 3610 3611 /** 3612 * Removes a previously added JavaScript interface with the given name. 3613 * @param interfaceName The name of the interface to remove. 3614 */ 3615 public void removeJavascriptInterface(String interfaceName) { 3616 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3617 arg.mInterfaceName = interfaceName; 3618 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3619 } 3620 3621 /** 3622 * Return the WebSettings object used to control the settings for this 3623 * WebView. 3624 * @return A WebSettings object that can be used to control this WebView's 3625 * settings. 3626 */ 3627 public WebSettings getSettings() { 3628 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3629 } 3630 3631 /** 3632 * Return the list of currently loaded plugins. 3633 * @return The list of currently loaded plugins. 3634 * 3635 * @deprecated This was used for Gears, which has been deprecated. 3636 */ 3637 @Deprecated 3638 public static synchronized PluginList getPluginList() { 3639 return new PluginList(); 3640 } 3641 3642 /** 3643 * @deprecated This was used for Gears, which has been deprecated. 3644 */ 3645 @Deprecated 3646 public void refreshPlugins(boolean reloadOpenPages) { } 3647 3648 //------------------------------------------------------------------------- 3649 // Override View methods 3650 //------------------------------------------------------------------------- 3651 3652 @Override 3653 protected void finalize() throws Throwable { 3654 try { 3655 destroy(); 3656 } finally { 3657 super.finalize(); 3658 } 3659 } 3660 3661 @Override 3662 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3663 if (child == mTitleBar) { 3664 // When drawing the title bar, move it horizontally to always show 3665 // at the top of the WebView. 3666 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3667 int newTop = Math.min(0, mScrollY); 3668 mTitleBar.setBottom(newTop + getTitleHeight()); 3669 mTitleBar.setTop(newTop); 3670 } 3671 return super.drawChild(canvas, child, drawingTime); 3672 } 3673 3674 private void drawContent(Canvas canvas) { 3675 // Update the buttons in the picture, so when we draw the picture 3676 // to the screen, they are in the correct state. 3677 // Tell the native side if user is a) touching the screen, 3678 // b) pressing the trackball down, or c) pressing the enter key 3679 // If the cursor is on a button, we need to draw it in the pressed 3680 // state. 3681 // If mNativeClass is 0, we should not reach here, so we do not 3682 // need to check it again. 3683 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3684 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3685 || mTrackballDown || mGotCenterDown, false); 3686 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3687 } 3688 3689 /** 3690 * Draw the background when beyond bounds 3691 * @param canvas Canvas to draw into 3692 */ 3693 private void drawOverScrollBackground(Canvas canvas) { 3694 if (mOverScrollBackground == null) { 3695 mOverScrollBackground = new Paint(); 3696 Bitmap bm = BitmapFactory.decodeResource( 3697 mContext.getResources(), 3698 com.android.internal.R.drawable.status_bar_background); 3699 mOverScrollBackground.setShader(new BitmapShader(bm, 3700 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3701 mOverScrollBorder = new Paint(); 3702 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3703 mOverScrollBorder.setStrokeWidth(0); 3704 mOverScrollBorder.setColor(0xffbbbbbb); 3705 } 3706 3707 int top = 0; 3708 int right = computeRealHorizontalScrollRange(); 3709 int bottom = top + computeRealVerticalScrollRange(); 3710 // first draw the background and anchor to the top of the view 3711 canvas.save(); 3712 canvas.translate(mScrollX, mScrollY); 3713 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3714 - mScrollY, Region.Op.DIFFERENCE); 3715 canvas.drawPaint(mOverScrollBackground); 3716 canvas.restore(); 3717 // then draw the border 3718 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3719 // next clip the region for the content 3720 canvas.clipRect(0, top, right, bottom); 3721 } 3722 3723 @Override 3724 protected void onDraw(Canvas canvas) { 3725 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3726 if (mNativeClass == 0) { 3727 return; 3728 } 3729 3730 // if both mContentWidth and mContentHeight are 0, it means there is no 3731 // valid Picture passed to WebView yet. This can happen when WebView 3732 // just starts. Draw the background and return. 3733 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3734 canvas.drawColor(mBackgroundColor); 3735 return; 3736 } 3737 3738 if (canvas.isHardwareAccelerated()) { 3739 mZoomManager.setHardwareAccelerated(); 3740 } 3741 3742 int saveCount = canvas.save(); 3743 if (mInOverScrollMode && !getSettings() 3744 .getUseWebViewBackgroundForOverscrollBackground()) { 3745 drawOverScrollBackground(canvas); 3746 } 3747 if (mTitleBar != null) { 3748 canvas.translate(0, (int) mTitleBar.getHeight()); 3749 } 3750 drawContent(canvas); 3751 canvas.restoreToCount(saveCount); 3752 3753 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3754 invalidate(); 3755 } 3756 if (inEditingMode()) { 3757 mWebTextView.onDrawSubstitute(); 3758 } 3759 mWebViewCore.signalRepaintDone(); 3760 3761 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3762 invalidate(); 3763 } 3764 3765 // paint the highlight in the end 3766 if (!mTouchHighlightRegion.isEmpty()) { 3767 if (mTouchHightlightPaint == null) { 3768 mTouchHightlightPaint = new Paint(); 3769 mTouchHightlightPaint.setColor(mHightlightColor); 3770 mTouchHightlightPaint.setAntiAlias(true); 3771 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3772 TOUCH_HIGHLIGHT_ARC)); 3773 } 3774 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3775 mTouchHightlightPaint); 3776 } 3777 if (DEBUG_TOUCH_HIGHLIGHT) { 3778 if (getSettings().getNavDump()) { 3779 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3780 if (mTouchCrossHairColor == null) { 3781 mTouchCrossHairColor = new Paint(); 3782 mTouchCrossHairColor.setColor(Color.RED); 3783 } 3784 canvas.drawLine(mTouchHighlightX - mNavSlop, 3785 mTouchHighlightY - mNavSlop, mTouchHighlightX 3786 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3787 + 1, mTouchCrossHairColor); 3788 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3789 mTouchHighlightY - mNavSlop, mTouchHighlightX 3790 - mNavSlop, 3791 mTouchHighlightY + mNavSlop + 1, 3792 mTouchCrossHairColor); 3793 } 3794 } 3795 } 3796 } 3797 3798 private void removeTouchHighlight(boolean removePendingMessage) { 3799 if (removePendingMessage) { 3800 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3801 } 3802 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3803 } 3804 3805 @Override 3806 public void setLayoutParams(ViewGroup.LayoutParams params) { 3807 if (params.height == LayoutParams.WRAP_CONTENT) { 3808 mWrapContent = true; 3809 } 3810 super.setLayoutParams(params); 3811 } 3812 3813 @Override 3814 public boolean performLongClick() { 3815 // performLongClick() is the result of a delayed message. If we switch 3816 // to windows overview, the WebView will be temporarily removed from the 3817 // view system. In that case, do nothing. 3818 if (getParent() == null) return false; 3819 3820 // A multi-finger gesture can look like a long press; make sure we don't take 3821 // long press actions if we're scaling. 3822 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3823 if (detector != null && detector.isInProgress()) { 3824 return false; 3825 } 3826 3827 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3828 // Send the click so that the textfield is in focus 3829 centerKeyPressOnTextField(); 3830 rebuildWebTextView(); 3831 } else { 3832 clearTextEntry(); 3833 } 3834 if (inEditingMode()) { 3835 // Since we just called rebuildWebTextView, the layout is not set 3836 // properly. Update it so it can correctly find the word to select. 3837 mWebTextView.ensureLayout(); 3838 // Provide a touch down event to WebTextView, which will allow it 3839 // to store the location to use in performLongClick. 3840 AbsoluteLayout.LayoutParams params 3841 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3842 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3843 mLastTouchTime, MotionEvent.ACTION_DOWN, 3844 mLastTouchX - params.x + mScrollX, 3845 mLastTouchY - params.y + mScrollY, 0); 3846 mWebTextView.dispatchTouchEvent(fake); 3847 return mWebTextView.performLongClick(); 3848 } 3849 if (mSelectingText) return false; // long click does nothing on selection 3850 /* if long click brings up a context menu, the super function 3851 * returns true and we're done. Otherwise, nothing happened when 3852 * the user clicked. */ 3853 if (super.performLongClick()) { 3854 return true; 3855 } 3856 /* In the case where the application hasn't already handled the long 3857 * click action, look for a word under the click. If one is found, 3858 * animate the text selection into view. 3859 * FIXME: no animation code yet */ 3860 return selectText(); 3861 } 3862 3863 /** 3864 * Select the word at the last click point. 3865 * 3866 * @hide pending API council approval 3867 */ 3868 public boolean selectText() { 3869 int x = viewToContentX(mLastTouchX + mScrollX); 3870 int y = viewToContentY(mLastTouchY + mScrollY); 3871 return selectText(x, y); 3872 } 3873 3874 /** 3875 * Select the word at the indicated content coordinates. 3876 */ 3877 boolean selectText(int x, int y) { 3878 if (!setUpSelect()) { 3879 return false; 3880 } 3881 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3882 nativeSetExtendSelection(); 3883 mDrawSelectionPointer = false; 3884 mSelectionStarted = true; 3885 mTouchMode = TOUCH_DRAG_MODE; 3886 return true; 3887 } 3888 selectionDone(); 3889 return false; 3890 } 3891 3892 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3893 3894 @Override 3895 protected void onConfigurationChanged(Configuration newConfig) { 3896 if (mSelectingText && mOrientation != newConfig.orientation) { 3897 selectionDone(); 3898 } 3899 mOrientation = newConfig.orientation; 3900 } 3901 3902 /** 3903 * Keep track of the Callback so we can end its ActionMode or remove its 3904 * titlebar. 3905 */ 3906 private SelectActionModeCallback mSelectCallback; 3907 3908 // These values are possible options for didUpdateWebTextViewDimensions. 3909 private static final int FULLY_ON_SCREEN = 0; 3910 private static final int INTERSECTS_SCREEN = 1; 3911 private static final int ANYWHERE = 2; 3912 3913 /** 3914 * Check to see if the focused textfield/textarea is still on screen. If it 3915 * is, update the the dimensions and location of WebTextView. Otherwise, 3916 * remove the WebTextView. Should be called when the zoom level changes. 3917 * @param intersection How to determine whether the textfield/textarea is 3918 * still on screen. 3919 * @return boolean True if the textfield/textarea is still on screen and the 3920 * dimensions/location of WebTextView have been updated. 3921 */ 3922 private boolean didUpdateWebTextViewDimensions(int intersection) { 3923 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3924 Rect vBox = contentToViewRect(contentBounds); 3925 Rect visibleRect = new Rect(); 3926 calcOurVisibleRect(visibleRect); 3927 // If the textfield is on screen, place the WebTextView in 3928 // its new place, accounting for our new scroll/zoom values, 3929 // and adjust its textsize. 3930 boolean onScreen; 3931 switch (intersection) { 3932 case FULLY_ON_SCREEN: 3933 onScreen = visibleRect.contains(vBox); 3934 break; 3935 case INTERSECTS_SCREEN: 3936 onScreen = Rect.intersects(visibleRect, vBox); 3937 break; 3938 case ANYWHERE: 3939 onScreen = true; 3940 break; 3941 default: 3942 throw new AssertionError( 3943 "invalid parameter passed to didUpdateWebTextViewDimensions"); 3944 } 3945 if (onScreen) { 3946 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3947 vBox.height()); 3948 mWebTextView.updateTextSize(); 3949 updateWebTextViewPadding(); 3950 return true; 3951 } else { 3952 // The textfield is now off screen. The user probably 3953 // was not zooming to see the textfield better. Remove 3954 // the WebTextView. If the user types a key, and the 3955 // textfield is still in focus, we will reconstruct 3956 // the WebTextView and scroll it back on screen. 3957 mWebTextView.remove(); 3958 return false; 3959 } 3960 } 3961 3962 void setBaseLayer(int layer, Rect invalRect) { 3963 if (mNativeClass == 0) 3964 return; 3965 if (invalRect == null) { 3966 Rect rect = new Rect(0, 0, mContentWidth, mContentHeight); 3967 nativeSetBaseLayer(layer, rect); 3968 } else { 3969 nativeSetBaseLayer(layer, invalRect); 3970 } 3971 } 3972 3973 private void onZoomAnimationStart() { 3974 // If it is in password mode, turn it off so it does not draw misplaced. 3975 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3976 mWebTextView.setInPassword(false); 3977 } 3978 } 3979 3980 private void onZoomAnimationEnd() { 3981 // adjust the edit text view if needed 3982 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 3983 && nativeFocusCandidateIsPassword()) { 3984 // If it is a password field, start drawing the WebTextView once 3985 // again. 3986 mWebTextView.setInPassword(true); 3987 } 3988 } 3989 3990 void onFixedLengthZoomAnimationStart() { 3991 WebViewCore.pauseUpdatePicture(getWebViewCore()); 3992 onZoomAnimationStart(); 3993 } 3994 3995 void onFixedLengthZoomAnimationEnd() { 3996 if (!mSelectingText) { 3997 WebViewCore.resumeUpdatePicture(mWebViewCore); 3998 } 3999 onZoomAnimationEnd(); 4000 } 4001 4002 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4003 Paint.DITHER_FLAG | 4004 Paint.SUBPIXEL_TEXT_FLAG; 4005 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4006 Paint.DITHER_FLAG; 4007 4008 private final DrawFilter mZoomFilter = 4009 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4010 // If we need to trade better quality for speed, set mScrollFilter to null 4011 private final DrawFilter mScrollFilter = 4012 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4013 4014 private void drawCoreAndCursorRing(Canvas canvas, int color, 4015 boolean drawCursorRing) { 4016 if (mDrawHistory) { 4017 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4018 canvas.drawPicture(mHistoryPicture); 4019 return; 4020 } 4021 if (mNativeClass == 0) return; 4022 4023 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4024 boolean animateScroll = ((!mScroller.isFinished() 4025 || mVelocityTracker != null) 4026 && (mTouchMode != TOUCH_DRAG_MODE || 4027 mHeldMotionless != MOTIONLESS_TRUE)) 4028 || mDeferTouchMode == TOUCH_DRAG_MODE; 4029 if (mTouchMode == TOUCH_DRAG_MODE) { 4030 if (mHeldMotionless == MOTIONLESS_PENDING) { 4031 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4032 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4033 mHeldMotionless = MOTIONLESS_FALSE; 4034 } 4035 if (mHeldMotionless == MOTIONLESS_FALSE) { 4036 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4037 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4038 mHeldMotionless = MOTIONLESS_PENDING; 4039 } 4040 } 4041 if (animateZoom) { 4042 mZoomManager.animateZoom(canvas); 4043 } else { 4044 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4045 } 4046 4047 boolean UIAnimationsRunning = false; 4048 // Currently for each draw we compute the animation values; 4049 // We may in the future decide to do that independently. 4050 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4051 UIAnimationsRunning = true; 4052 // If we have unfinished (or unstarted) animations, 4053 // we ask for a repaint. 4054 invalidate(); 4055 } 4056 4057 // decide which adornments to draw 4058 int extras = DRAW_EXTRAS_NONE; 4059 if (mFindIsUp) { 4060 extras = DRAW_EXTRAS_FIND; 4061 } else if (mSelectingText) { 4062 extras = DRAW_EXTRAS_SELECTION; 4063 nativeSetSelectionPointer(mDrawSelectionPointer, 4064 mZoomManager.getInvScale(), 4065 mSelectX, mSelectY - getTitleHeight()); 4066 } else if (drawCursorRing) { 4067 extras = DRAW_EXTRAS_CURSOR_RING; 4068 } 4069 if (DebugFlags.WEB_VIEW) { 4070 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4071 + " mSelectingText=" + mSelectingText 4072 + " nativePageShouldHandleShiftAndArrows()=" 4073 + nativePageShouldHandleShiftAndArrows() 4074 + " animateZoom=" + animateZoom 4075 + " extras=" + extras); 4076 } 4077 4078 if (canvas.isHardwareAccelerated()) { 4079 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4080 getScale(), extras); 4081 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4082 } else { 4083 DrawFilter df = null; 4084 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4085 df = mZoomFilter; 4086 } else if (animateScroll) { 4087 df = mScrollFilter; 4088 } 4089 canvas.setDrawFilter(df); 4090 // XXX: Revisit splitting content. Right now it causes a 4091 // synchronization problem with layers. 4092 int content = nativeDraw(canvas, color, extras, false); 4093 canvas.setDrawFilter(null); 4094 if (content != 0) { 4095 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4096 } 4097 } 4098 4099 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4100 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4101 mTouchMode = TOUCH_SHORTPRESS_MODE; 4102 } 4103 } 4104 if (mFocusSizeChanged) { 4105 mFocusSizeChanged = false; 4106 // If we are zooming, this will get handled above, when the zoom 4107 // finishes. We also do not need to do this unless the WebTextView 4108 // is showing. 4109 if (!animateZoom && inEditingMode()) { 4110 didUpdateWebTextViewDimensions(ANYWHERE); 4111 } 4112 } 4113 } 4114 4115 // draw history 4116 private boolean mDrawHistory = false; 4117 private Picture mHistoryPicture = null; 4118 private int mHistoryWidth = 0; 4119 private int mHistoryHeight = 0; 4120 4121 // Only check the flag, can be called from WebCore thread 4122 boolean drawHistory() { 4123 return mDrawHistory; 4124 } 4125 4126 int getHistoryPictureWidth() { 4127 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4128 } 4129 4130 // Should only be called in UI thread 4131 void switchOutDrawHistory() { 4132 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4133 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4134 mDrawHistory = false; 4135 mHistoryPicture = null; 4136 invalidate(); 4137 int oldScrollX = mScrollX; 4138 int oldScrollY = mScrollY; 4139 mScrollX = pinLocX(mScrollX); 4140 mScrollY = pinLocY(mScrollY); 4141 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4142 mUserScroll = false; 4143 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 4144 oldScrollY); 4145 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4146 } else { 4147 sendOurVisibleRect(); 4148 } 4149 } 4150 } 4151 4152 WebViewCore.CursorData cursorData() { 4153 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4154 result.mMoveGeneration = nativeMoveGeneration(); 4155 result.mFrame = nativeCursorFramePointer(); 4156 Point position = nativeCursorPosition(); 4157 result.mX = position.x; 4158 result.mY = position.y; 4159 return result; 4160 } 4161 4162 /** 4163 * Delete text from start to end in the focused textfield. If there is no 4164 * focus, or if start == end, silently fail. If start and end are out of 4165 * order, swap them. 4166 * @param start Beginning of selection to delete. 4167 * @param end End of selection to delete. 4168 */ 4169 /* package */ void deleteSelection(int start, int end) { 4170 mTextGeneration++; 4171 WebViewCore.TextSelectionData data 4172 = new WebViewCore.TextSelectionData(start, end); 4173 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4174 data); 4175 } 4176 4177 /** 4178 * Set the selection to (start, end) in the focused textfield. If start and 4179 * end are out of order, swap them. 4180 * @param start Beginning of selection. 4181 * @param end End of selection. 4182 */ 4183 /* package */ void setSelection(int start, int end) { 4184 if (mWebViewCore != null) { 4185 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4186 } 4187 } 4188 4189 @Override 4190 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4191 InputConnection connection = super.onCreateInputConnection(outAttrs); 4192 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4193 return connection; 4194 } 4195 4196 /** 4197 * Called in response to a message from webkit telling us that the soft 4198 * keyboard should be launched. 4199 */ 4200 private void displaySoftKeyboard(boolean isTextView) { 4201 InputMethodManager imm = (InputMethodManager) 4202 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4203 4204 // bring it back to the default level scale so that user can enter text 4205 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4206 if (zoom) { 4207 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4208 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4209 } 4210 if (isTextView) { 4211 rebuildWebTextView(); 4212 if (inEditingMode()) { 4213 imm.showSoftInput(mWebTextView, 0); 4214 if (zoom) { 4215 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4216 } 4217 return; 4218 } 4219 } 4220 // Used by plugins and contentEditable. 4221 // Also used if the navigation cache is out of date, and 4222 // does not recognize that a textfield is in focus. In that 4223 // case, use WebView as the targeted view. 4224 // see http://b/issue?id=2457459 4225 imm.showSoftInput(this, 0); 4226 } 4227 4228 // Called by WebKit to instruct the UI to hide the keyboard 4229 private void hideSoftKeyboard() { 4230 InputMethodManager imm = InputMethodManager.peekInstance(); 4231 if (imm != null && (imm.isActive(this) 4232 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4233 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4234 } 4235 } 4236 4237 /* 4238 * This method checks the current focus and cursor and potentially rebuilds 4239 * mWebTextView to have the appropriate properties, such as password, 4240 * multiline, and what text it contains. It also removes it if necessary. 4241 */ 4242 /* package */ void rebuildWebTextView() { 4243 // If the WebView does not have focus, do nothing until it gains focus. 4244 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4245 return; 4246 } 4247 boolean alreadyThere = inEditingMode(); 4248 // inEditingMode can only return true if mWebTextView is non-null, 4249 // so we can safely call remove() if (alreadyThere) 4250 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4251 if (alreadyThere) { 4252 mWebTextView.remove(); 4253 } 4254 return; 4255 } 4256 // At this point, we know we have found an input field, so go ahead 4257 // and create the WebTextView if necessary. 4258 if (mWebTextView == null) { 4259 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4260 // Initialize our generation number. 4261 mTextGeneration = 0; 4262 } 4263 mWebTextView.updateTextSize(); 4264 Rect visibleRect = new Rect(); 4265 calcOurContentVisibleRect(visibleRect); 4266 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4267 // should be in content coordinates. 4268 Rect bounds = nativeFocusCandidateNodeBounds(); 4269 Rect vBox = contentToViewRect(bounds); 4270 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4271 if (!Rect.intersects(bounds, visibleRect)) { 4272 revealSelection(); 4273 } 4274 String text = nativeFocusCandidateText(); 4275 int nodePointer = nativeFocusCandidatePointer(); 4276 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4277 // It is possible that we have the same textfield, but it has moved, 4278 // i.e. In the case of opening/closing the screen. 4279 // In that case, we need to set the dimensions, but not the other 4280 // aspects. 4281 // If the text has been changed by webkit, update it. However, if 4282 // there has been more UI text input, ignore it. We will receive 4283 // another update when that text is recognized. 4284 if (text != null && !text.equals(mWebTextView.getText().toString()) 4285 && nativeTextGeneration() == mTextGeneration) { 4286 mWebTextView.setTextAndKeepSelection(text); 4287 } 4288 } else { 4289 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4290 Gravity.RIGHT : Gravity.NO_GRAVITY); 4291 // This needs to be called before setType, which may call 4292 // requestFormData, and it needs to have the correct nodePointer. 4293 mWebTextView.setNodePointer(nodePointer); 4294 mWebTextView.setType(nativeFocusCandidateType()); 4295 updateWebTextViewPadding(); 4296 if (null == text) { 4297 if (DebugFlags.WEB_VIEW) { 4298 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4299 } 4300 text = ""; 4301 } 4302 mWebTextView.setTextAndKeepSelection(text); 4303 InputMethodManager imm = InputMethodManager.peekInstance(); 4304 if (imm != null && imm.isActive(mWebTextView)) { 4305 imm.restartInput(mWebTextView); 4306 } 4307 } 4308 if (isFocused()) { 4309 mWebTextView.requestFocus(); 4310 } 4311 } 4312 4313 /** 4314 * Update the padding of mWebTextView based on the native textfield/textarea 4315 */ 4316 void updateWebTextViewPadding() { 4317 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4318 if (paddingRect != null) { 4319 // Use contentToViewDimension since these are the dimensions of 4320 // the padding. 4321 mWebTextView.setPadding( 4322 contentToViewDimension(paddingRect.left), 4323 contentToViewDimension(paddingRect.top), 4324 contentToViewDimension(paddingRect.right), 4325 contentToViewDimension(paddingRect.bottom)); 4326 } 4327 } 4328 4329 /** 4330 * Tell webkit to put the cursor on screen. 4331 */ 4332 /* package */ void revealSelection() { 4333 if (mWebViewCore != null) { 4334 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4335 } 4336 } 4337 4338 /** 4339 * Called by WebTextView to find saved form data associated with the 4340 * textfield 4341 * @param name Name of the textfield. 4342 * @param nodePointer Pointer to the node of the textfield, so it can be 4343 * compared to the currently focused textfield when the data is 4344 * retrieved. 4345 * @param autoFillable true if WebKit has determined this field is part of 4346 * a form that can be auto filled. 4347 * @param autoComplete true if the attribute "autocomplete" is set to true 4348 * on the textfield. 4349 */ 4350 /* package */ void requestFormData(String name, int nodePointer, 4351 boolean autoFillable, boolean autoComplete) { 4352 if (mWebViewCore.getSettings().getSaveFormData()) { 4353 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4354 update.arg1 = nodePointer; 4355 RequestFormData updater = new RequestFormData(name, getUrl(), 4356 update, autoFillable, autoComplete); 4357 Thread t = new Thread(updater); 4358 t.start(); 4359 } 4360 } 4361 4362 /** 4363 * Pass a message to find out the <label> associated with the <input> 4364 * identified by nodePointer 4365 * @param framePointer Pointer to the frame containing the <input> node 4366 * @param nodePointer Pointer to the node for which a <label> is desired. 4367 */ 4368 /* package */ void requestLabel(int framePointer, int nodePointer) { 4369 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4370 nodePointer); 4371 } 4372 4373 /* 4374 * This class requests an Adapter for the WebTextView which shows past 4375 * entries stored in the database. It is a Runnable so that it can be done 4376 * in its own thread, without slowing down the UI. 4377 */ 4378 private class RequestFormData implements Runnable { 4379 private String mName; 4380 private String mUrl; 4381 private Message mUpdateMessage; 4382 private boolean mAutoFillable; 4383 private boolean mAutoComplete; 4384 4385 public RequestFormData(String name, String url, Message msg, 4386 boolean autoFillable, boolean autoComplete) { 4387 mName = name; 4388 mUrl = url; 4389 mUpdateMessage = msg; 4390 mAutoFillable = autoFillable; 4391 mAutoComplete = autoComplete; 4392 } 4393 4394 public void run() { 4395 ArrayList<String> pastEntries = new ArrayList<String>(); 4396 4397 if (mAutoFillable) { 4398 // Note that code inside the adapter click handler in WebTextView depends 4399 // on the AutoFill item being at the top of the drop down list. If you change 4400 // the order, make sure to do it there too! 4401 WebSettings settings = getSettings(); 4402 if (settings != null && settings.getAutoFillProfile() != null) { 4403 pastEntries.add(getResources().getText( 4404 com.android.internal.R.string.autofill_this_form).toString() + 4405 " " + 4406 mAutoFillData.getPreviewString()); 4407 mWebTextView.setAutoFillProfileIsSet(true); 4408 } else { 4409 // There is no autofill profile set up yet, so add an option that 4410 // will invite the user to set their profile up. 4411 pastEntries.add(getResources().getText( 4412 com.android.internal.R.string.setup_autofill).toString()); 4413 mWebTextView.setAutoFillProfileIsSet(false); 4414 } 4415 } 4416 4417 if (mAutoComplete) { 4418 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4419 } 4420 4421 if (pastEntries.size() > 0) { 4422 AutoCompleteAdapter adapter = new 4423 AutoCompleteAdapter(mContext, pastEntries); 4424 mUpdateMessage.obj = adapter; 4425 mUpdateMessage.sendToTarget(); 4426 } 4427 } 4428 } 4429 4430 /** 4431 * Dump the display tree to "/sdcard/displayTree.txt" 4432 * 4433 * @hide debug only 4434 */ 4435 public void dumpDisplayTree() { 4436 nativeDumpDisplayTree(getUrl()); 4437 } 4438 4439 /** 4440 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4441 * "/sdcard/domTree.txt" 4442 * 4443 * @hide debug only 4444 */ 4445 public void dumpDomTree(boolean toFile) { 4446 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4447 } 4448 4449 /** 4450 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4451 * to "/sdcard/renderTree.txt" 4452 * 4453 * @hide debug only 4454 */ 4455 public void dumpRenderTree(boolean toFile) { 4456 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4457 } 4458 4459 /** 4460 * Called by DRT on UI thread, need to proxy to WebCore thread. 4461 * 4462 * @hide debug only 4463 */ 4464 public void useMockDeviceOrientation() { 4465 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4466 } 4467 4468 /** 4469 * Called by DRT on WebCore thread. 4470 * 4471 * @hide debug only 4472 */ 4473 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4474 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4475 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4476 canProvideGamma, gamma); 4477 } 4478 4479 /** 4480 * Dump the V8 counters to standard output. 4481 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4482 * true. Otherwise, this will do nothing. 4483 * 4484 * @hide debug only 4485 */ 4486 public void dumpV8Counters() { 4487 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4488 } 4489 4490 // This is used to determine long press with the center key. Does not 4491 // affect long press with the trackball/touch. 4492 private boolean mGotCenterDown = false; 4493 4494 @Override 4495 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4496 // send complex characters to webkit for use by JS and plugins 4497 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4498 // pass the key to DOM 4499 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4500 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4501 // return true as DOM handles the key 4502 return true; 4503 } 4504 return false; 4505 } 4506 4507 private boolean isEnterActionKey(int keyCode) { 4508 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4509 || keyCode == KeyEvent.KEYCODE_ENTER 4510 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4511 } 4512 4513 @Override 4514 public boolean onKeyDown(int keyCode, KeyEvent event) { 4515 if (DebugFlags.WEB_VIEW) { 4516 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4517 + "keyCode=" + keyCode 4518 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4519 } 4520 4521 // don't implement accelerator keys here; defer to host application 4522 if (event.isCtrlPressed()) { 4523 return false; 4524 } 4525 4526 if (mNativeClass == 0) { 4527 return false; 4528 } 4529 4530 // do this hack up front, so it always works, regardless of touch-mode 4531 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4532 mAutoRedraw = !mAutoRedraw; 4533 if (mAutoRedraw) { 4534 invalidate(); 4535 } 4536 return true; 4537 } 4538 4539 // Bubble up the key event if 4540 // 1. it is a system key; or 4541 // 2. the host application wants to handle it; 4542 if (event.isSystem() 4543 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4544 return false; 4545 } 4546 4547 // accessibility support 4548 if (accessibilityScriptInjected()) { 4549 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4550 // if an accessibility script is injected we delegate to it the key handling. 4551 // this script is a screen reader which is a fully fledged solution for blind 4552 // users to navigate in and interact with web pages. 4553 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4554 return true; 4555 } else { 4556 // Clean up if accessibility was disabled after loading the current URL. 4557 mAccessibilityScriptInjected = false; 4558 } 4559 } else if (mAccessibilityInjector != null) { 4560 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4561 if (mAccessibilityInjector.onKeyEvent(event)) { 4562 // if an accessibility injector is present (no JavaScript enabled or the site 4563 // opts out injecting our JavaScript screen reader) we let it decide whether 4564 // to act on and consume the event. 4565 return true; 4566 } 4567 } else { 4568 // Clean up if accessibility was disabled after loading the current URL. 4569 mAccessibilityInjector = null; 4570 } 4571 } 4572 4573 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4574 if (event.hasNoModifiers()) { 4575 pageUp(false); 4576 return true; 4577 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4578 pageUp(true); 4579 return true; 4580 } 4581 } 4582 4583 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4584 if (event.hasNoModifiers()) { 4585 pageDown(false); 4586 return true; 4587 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4588 pageDown(true); 4589 return true; 4590 } 4591 } 4592 4593 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4594 pageUp(true); 4595 return true; 4596 } 4597 4598 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4599 pageDown(true); 4600 return true; 4601 } 4602 4603 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4604 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4605 switchOutDrawHistory(); 4606 if (nativePageShouldHandleShiftAndArrows()) { 4607 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4608 return true; 4609 } 4610 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4611 switch (keyCode) { 4612 case KeyEvent.KEYCODE_DPAD_UP: 4613 pageUp(true); 4614 return true; 4615 case KeyEvent.KEYCODE_DPAD_DOWN: 4616 pageDown(true); 4617 return true; 4618 case KeyEvent.KEYCODE_DPAD_LEFT: 4619 nativeClearCursor(); // start next trackball movement from page edge 4620 return pinScrollTo(0, mScrollY, true, 0); 4621 case KeyEvent.KEYCODE_DPAD_RIGHT: 4622 nativeClearCursor(); // start next trackball movement from page edge 4623 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4624 } 4625 } 4626 if (mSelectingText) { 4627 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4628 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4629 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4630 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4631 int multiplier = event.getRepeatCount() + 1; 4632 moveSelection(xRate * multiplier, yRate * multiplier); 4633 return true; 4634 } 4635 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4636 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4637 return true; 4638 } 4639 // Bubble up the key event as WebView doesn't handle it 4640 return false; 4641 } 4642 4643 if (isEnterActionKey(keyCode)) { 4644 switchOutDrawHistory(); 4645 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4646 || nativeCursorWantsKeyEvents(); 4647 if (event.getRepeatCount() == 0) { 4648 if (mSelectingText) { 4649 return true; // discard press if copy in progress 4650 } 4651 mGotCenterDown = true; 4652 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4653 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4654 // Already checked mNativeClass, so we do not need to check it 4655 // again. 4656 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4657 if (!wantsKeyEvents) return true; 4658 } 4659 // Bubble up the key event as WebView doesn't handle it 4660 if (!wantsKeyEvents) return false; 4661 } 4662 4663 if (getSettings().getNavDump()) { 4664 switch (keyCode) { 4665 case KeyEvent.KEYCODE_4: 4666 dumpDisplayTree(); 4667 break; 4668 case KeyEvent.KEYCODE_5: 4669 case KeyEvent.KEYCODE_6: 4670 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4671 break; 4672 case KeyEvent.KEYCODE_7: 4673 case KeyEvent.KEYCODE_8: 4674 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4675 break; 4676 case KeyEvent.KEYCODE_9: 4677 nativeInstrumentReport(); 4678 return true; 4679 } 4680 } 4681 4682 if (nativeCursorIsTextInput()) { 4683 // This message will put the node in focus, for the DOM's notion 4684 // of focus. 4685 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 4686 nativeCursorNodePointer()); 4687 // This will bring up the WebTextView and put it in focus, for 4688 // our view system's notion of focus 4689 rebuildWebTextView(); 4690 // Now we need to pass the event to it 4691 if (inEditingMode()) { 4692 mWebTextView.setDefaultSelection(); 4693 return mWebTextView.dispatchKeyEvent(event); 4694 } 4695 } else if (nativeHasFocusNode()) { 4696 // In this case, the cursor is not on a text input, but the focus 4697 // might be. Check it, and if so, hand over to the WebTextView. 4698 rebuildWebTextView(); 4699 if (inEditingMode()) { 4700 mWebTextView.setDefaultSelection(); 4701 return mWebTextView.dispatchKeyEvent(event); 4702 } 4703 } 4704 4705 // TODO: should we pass all the keys to DOM or check the meta tag 4706 if (nativeCursorWantsKeyEvents() || true) { 4707 // pass the key to DOM 4708 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4709 // return true as DOM handles the key 4710 return true; 4711 } 4712 4713 // Bubble up the key event as WebView doesn't handle it 4714 return false; 4715 } 4716 4717 @Override 4718 public boolean onKeyUp(int keyCode, KeyEvent event) { 4719 if (DebugFlags.WEB_VIEW) { 4720 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4721 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4722 } 4723 4724 if (mNativeClass == 0) { 4725 return false; 4726 } 4727 4728 // special CALL handling when cursor node's href is "tel:XXX" 4729 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4730 String text = nativeCursorText(); 4731 if (!nativeCursorIsTextInput() && text != null 4732 && text.startsWith(SCHEME_TEL)) { 4733 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4734 getContext().startActivity(intent); 4735 return true; 4736 } 4737 } 4738 4739 // Bubble up the key event if 4740 // 1. it is a system key; or 4741 // 2. the host application wants to handle it; 4742 if (event.isSystem() 4743 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4744 return false; 4745 } 4746 4747 // accessibility support 4748 if (accessibilityScriptInjected()) { 4749 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4750 // if an accessibility script is injected we delegate to it the key handling. 4751 // this script is a screen reader which is a fully fledged solution for blind 4752 // users to navigate in and interact with web pages. 4753 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4754 return true; 4755 } else { 4756 // Clean up if accessibility was disabled after loading the current URL. 4757 mAccessibilityScriptInjected = false; 4758 } 4759 } else if (mAccessibilityInjector != null) { 4760 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4761 if (mAccessibilityInjector.onKeyEvent(event)) { 4762 // if an accessibility injector is present (no JavaScript enabled or the site 4763 // opts out injecting our JavaScript screen reader) we let it decide whether to 4764 // act on and consume the event. 4765 return true; 4766 } 4767 } else { 4768 // Clean up if accessibility was disabled after loading the current URL. 4769 mAccessibilityInjector = null; 4770 } 4771 } 4772 4773 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4774 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4775 if (nativePageShouldHandleShiftAndArrows()) { 4776 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4777 return true; 4778 } 4779 // always handle the navigation keys in the UI thread 4780 // Bubble up the key event as WebView doesn't handle it 4781 return false; 4782 } 4783 4784 if (isEnterActionKey(keyCode)) { 4785 // remove the long press message first 4786 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4787 mGotCenterDown = false; 4788 4789 if (mSelectingText) { 4790 if (mExtendSelection) { 4791 copySelection(); 4792 selectionDone(); 4793 } else { 4794 mExtendSelection = true; 4795 nativeSetExtendSelection(); 4796 invalidate(); // draw the i-beam instead of the arrow 4797 } 4798 return true; // discard press if copy in progress 4799 } 4800 4801 // perform the single click 4802 Rect visibleRect = sendOurVisibleRect(); 4803 // Note that sendOurVisibleRect calls viewToContent, so the 4804 // coordinates should be in content coordinates. 4805 if (!nativeCursorIntersects(visibleRect)) { 4806 return false; 4807 } 4808 WebViewCore.CursorData data = cursorData(); 4809 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4810 playSoundEffect(SoundEffectConstants.CLICK); 4811 if (nativeCursorIsTextInput()) { 4812 rebuildWebTextView(); 4813 centerKeyPressOnTextField(); 4814 if (inEditingMode()) { 4815 mWebTextView.setDefaultSelection(); 4816 } 4817 return true; 4818 } 4819 clearTextEntry(); 4820 nativeShowCursorTimed(); 4821 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4822 return true; 4823 } 4824 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 4825 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4826 nativeCursorNodePointer()); 4827 return true; 4828 } 4829 } 4830 4831 // TODO: should we pass all the keys to DOM or check the meta tag 4832 if (nativeCursorWantsKeyEvents() || true) { 4833 // pass the key to DOM 4834 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4835 // return true as DOM handles the key 4836 return true; 4837 } 4838 4839 // Bubble up the key event as WebView doesn't handle it 4840 return false; 4841 } 4842 4843 /* 4844 * Enter selecting text mode. Returns true if the WebView is now in 4845 * selecting text mode (including if it was already in that mode, and this 4846 * method did nothing). 4847 */ 4848 private boolean setUpSelect() { 4849 if (0 == mNativeClass) return false; // client isn't initialized 4850 if (inFullScreenMode()) return false; 4851 if (mSelectingText) return true; 4852 mExtendSelection = false; 4853 mSelectingText = mDrawSelectionPointer = true; 4854 // don't let the picture change during text selection 4855 WebViewCore.pauseUpdatePicture(mWebViewCore); 4856 nativeResetSelection(); 4857 if (nativeHasCursorNode()) { 4858 Rect rect = nativeCursorNodeBounds(); 4859 mSelectX = contentToViewX(rect.left); 4860 mSelectY = contentToViewY(rect.top); 4861 } else if (mLastTouchY > getVisibleTitleHeight()) { 4862 mSelectX = mScrollX + mLastTouchX; 4863 mSelectY = mScrollY + mLastTouchY; 4864 } else { 4865 mSelectX = mScrollX + getViewWidth() / 2; 4866 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4867 } 4868 nativeHideCursor(); 4869 mSelectCallback = new SelectActionModeCallback(); 4870 mSelectCallback.setWebView(this); 4871 if (startActionMode(mSelectCallback) == null) { 4872 // There is no ActionMode, so do not allow the user to modify a 4873 // selection. 4874 selectionDone(); 4875 return false; 4876 } 4877 mMinAutoScrollX = 0; 4878 mMaxAutoScrollX = getViewWidth(); 4879 mMinAutoScrollY = 0; 4880 mMaxAutoScrollY = getViewHeightWithTitle(); 4881 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 4882 viewToContentY(mSelectY), mScrollingLayerRect, 4883 mScrollingLayerBounds); 4884 if (mScrollingLayer != 0) { 4885 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 4886 mMinAutoScrollX = Math.max(mMinAutoScrollX, 4887 contentToViewX(mScrollingLayerBounds.left)); 4888 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 4889 contentToViewX(mScrollingLayerBounds.right)); 4890 } 4891 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 4892 mMinAutoScrollY = Math.max(mMinAutoScrollY, 4893 contentToViewY(mScrollingLayerBounds.top)); 4894 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 4895 contentToViewY(mScrollingLayerBounds.bottom)); 4896 } 4897 } 4898 mMinAutoScrollX += SELECT_SCROLL; 4899 mMaxAutoScrollX -= SELECT_SCROLL; 4900 mMinAutoScrollY += SELECT_SCROLL; 4901 mMaxAutoScrollY -= SELECT_SCROLL; 4902 return true; 4903 } 4904 4905 /** 4906 * Use this method to put the WebView into text selection mode. 4907 * Do not rely on this functionality; it will be deprecated in the future. 4908 */ 4909 public void emulateShiftHeld() { 4910 setUpSelect(); 4911 } 4912 4913 /** 4914 * Select all of the text in this WebView. 4915 * 4916 * @hide pending API council approval. 4917 */ 4918 public void selectAll() { 4919 if (0 == mNativeClass) return; // client isn't initialized 4920 if (inFullScreenMode()) return; 4921 if (!mSelectingText) { 4922 // retrieve a point somewhere within the text 4923 Point select = nativeSelectableText(); 4924 if (!selectText(select.x, select.y)) return; 4925 } 4926 nativeSelectAll(); 4927 mDrawSelectionPointer = false; 4928 mExtendSelection = true; 4929 invalidate(); 4930 } 4931 4932 /** 4933 * Called when the selection has been removed. 4934 */ 4935 void selectionDone() { 4936 if (mSelectingText) { 4937 mSelectingText = false; 4938 // finish is idempotent, so this is fine even if selectionDone was 4939 // called by mSelectCallback.onDestroyActionMode 4940 mSelectCallback.finish(); 4941 mSelectCallback = null; 4942 WebViewCore.resumePriority(); 4943 WebViewCore.resumeUpdatePicture(mWebViewCore); 4944 invalidate(); // redraw without selection 4945 mAutoScrollX = 0; 4946 mAutoScrollY = 0; 4947 mSentAutoScrollMessage = false; 4948 } 4949 } 4950 4951 /** 4952 * Copy the selection to the clipboard 4953 * 4954 * @hide pending API council approval. 4955 */ 4956 public boolean copySelection() { 4957 boolean copiedSomething = false; 4958 String selection = getSelection(); 4959 if (selection != null && selection != "") { 4960 if (DebugFlags.WEB_VIEW) { 4961 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4962 } 4963 Toast.makeText(mContext 4964 , com.android.internal.R.string.text_copied 4965 , Toast.LENGTH_SHORT).show(); 4966 copiedSomething = true; 4967 ClipboardManager cm = (ClipboardManager)getContext() 4968 .getSystemService(Context.CLIPBOARD_SERVICE); 4969 cm.setText(selection); 4970 } 4971 invalidate(); // remove selection region and pointer 4972 return copiedSomething; 4973 } 4974 4975 /** 4976 * Returns the currently highlighted text as a string. 4977 */ 4978 String getSelection() { 4979 if (mNativeClass == 0) return ""; 4980 return nativeGetSelection(); 4981 } 4982 4983 @Override 4984 protected void onAttachedToWindow() { 4985 super.onAttachedToWindow(); 4986 if (hasWindowFocus()) setActive(true); 4987 final ViewTreeObserver treeObserver = getViewTreeObserver(); 4988 if (treeObserver != null) { 4989 if (mGlobalLayoutListener == null) { 4990 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 4991 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 4992 } 4993 if (mScrollChangedListener == null) { 4994 mScrollChangedListener = new InnerScrollChangedListener(); 4995 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 4996 } 4997 } 4998 } 4999 5000 @Override 5001 protected void onDetachedFromWindow() { 5002 clearHelpers(); 5003 mZoomManager.dismissZoomPicker(); 5004 if (hasWindowFocus()) setActive(false); 5005 5006 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5007 if (treeObserver != null) { 5008 if (mGlobalLayoutListener != null) { 5009 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5010 mGlobalLayoutListener = null; 5011 } 5012 if (mScrollChangedListener != null) { 5013 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5014 mScrollChangedListener = null; 5015 } 5016 } 5017 5018 super.onDetachedFromWindow(); 5019 } 5020 5021 @Override 5022 protected void onVisibilityChanged(View changedView, int visibility) { 5023 super.onVisibilityChanged(changedView, visibility); 5024 // The zoomManager may be null if the webview is created from XML that 5025 // specifies the view's visibility param as not visible (see http://b/2794841) 5026 if (visibility != View.VISIBLE && mZoomManager != null) { 5027 mZoomManager.dismissZoomPicker(); 5028 } 5029 } 5030 5031 /** 5032 * @deprecated WebView no longer needs to implement 5033 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5034 */ 5035 @Deprecated 5036 public void onChildViewAdded(View parent, View child) {} 5037 5038 /** 5039 * @deprecated WebView no longer needs to implement 5040 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5041 */ 5042 @Deprecated 5043 public void onChildViewRemoved(View p, View child) {} 5044 5045 /** 5046 * @deprecated WebView should not have implemented 5047 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 5048 * does nothing now. 5049 */ 5050 @Deprecated 5051 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5052 } 5053 5054 void setActive(boolean active) { 5055 if (active) { 5056 if (hasFocus()) { 5057 // If our window regained focus, and we have focus, then begin 5058 // drawing the cursor ring 5059 mDrawCursorRing = true; 5060 setFocusControllerActive(true); 5061 if (mNativeClass != 0) { 5062 nativeRecordButtons(true, false, true); 5063 } 5064 } else { 5065 if (!inEditingMode()) { 5066 // If our window gained focus, but we do not have it, do not 5067 // draw the cursor ring. 5068 mDrawCursorRing = false; 5069 setFocusControllerActive(false); 5070 } 5071 // We do not call nativeRecordButtons here because we assume 5072 // that when we lost focus, or window focus, it got called with 5073 // false for the first parameter 5074 } 5075 } else { 5076 if (!mZoomManager.isZoomPickerVisible()) { 5077 /* 5078 * The external zoom controls come in their own window, so our 5079 * window loses focus. Our policy is to not draw the cursor ring 5080 * if our window is not focused, but this is an exception since 5081 * the user can still navigate the web page with the zoom 5082 * controls showing. 5083 */ 5084 mDrawCursorRing = false; 5085 } 5086 mGotKeyDown = false; 5087 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5088 mTouchMode = TOUCH_DONE_MODE; 5089 if (mNativeClass != 0) { 5090 nativeRecordButtons(false, false, true); 5091 } 5092 setFocusControllerActive(false); 5093 } 5094 invalidate(); 5095 } 5096 5097 // To avoid drawing the cursor ring, and remove the TextView when our window 5098 // loses focus. 5099 @Override 5100 public void onWindowFocusChanged(boolean hasWindowFocus) { 5101 setActive(hasWindowFocus); 5102 if (hasWindowFocus) { 5103 JWebCoreJavaBridge.setActiveWebView(this); 5104 } else { 5105 JWebCoreJavaBridge.removeActiveWebView(this); 5106 } 5107 super.onWindowFocusChanged(hasWindowFocus); 5108 } 5109 5110 /* 5111 * Pass a message to WebCore Thread, telling the WebCore::Page's 5112 * FocusController to be "inactive" so that it will 5113 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5114 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5115 */ 5116 /* package */ void setFocusControllerActive(boolean active) { 5117 if (mWebViewCore == null) return; 5118 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5119 // Need to send this message after the document regains focus. 5120 if (active && mListBoxMessage != null) { 5121 mWebViewCore.sendMessage(mListBoxMessage); 5122 mListBoxMessage = null; 5123 } 5124 } 5125 5126 @Override 5127 protected void onFocusChanged(boolean focused, int direction, 5128 Rect previouslyFocusedRect) { 5129 if (DebugFlags.WEB_VIEW) { 5130 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5131 } 5132 if (focused) { 5133 // When we regain focus, if we have window focus, resume drawing 5134 // the cursor ring 5135 if (hasWindowFocus()) { 5136 mDrawCursorRing = true; 5137 if (mNativeClass != 0) { 5138 nativeRecordButtons(true, false, true); 5139 } 5140 setFocusControllerActive(true); 5141 //} else { 5142 // The WebView has gained focus while we do not have 5143 // windowfocus. When our window lost focus, we should have 5144 // called nativeRecordButtons(false...) 5145 } 5146 } else { 5147 // When we lost focus, unless focus went to the TextView (which is 5148 // true if we are in editing mode), stop drawing the cursor ring. 5149 if (!inEditingMode()) { 5150 mDrawCursorRing = false; 5151 if (mNativeClass != 0) { 5152 nativeRecordButtons(false, false, true); 5153 } 5154 setFocusControllerActive(false); 5155 } 5156 mGotKeyDown = false; 5157 } 5158 5159 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5160 } 5161 5162 void setGLRectViewport() { 5163 // Use the getGlobalVisibleRect() to get the intersection among the parents 5164 // visible == false means we're clipped - send a null rect down to indicate that 5165 // we should not draw 5166 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5167 if (visible) { 5168 // Then need to invert the Y axis, just for GL 5169 View rootView = getRootView(); 5170 int rootViewHeight = rootView.getHeight(); 5171 int savedWebViewBottom = mGLRectViewport.bottom; 5172 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeight(); 5173 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5174 mGLViewportEmpty = false; 5175 } else { 5176 mGLViewportEmpty = true; 5177 } 5178 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport); 5179 } 5180 5181 /** 5182 * @hide 5183 */ 5184 @Override 5185 protected boolean setFrame(int left, int top, int right, int bottom) { 5186 boolean changed = super.setFrame(left, top, right, bottom); 5187 if (!changed && mHeightCanMeasure) { 5188 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5189 // in WebViewCore after we get the first layout. We do call 5190 // requestLayout() when we get contentSizeChanged(). But the View 5191 // system won't call onSizeChanged if the dimension is not changed. 5192 // In this case, we need to call sendViewSizeZoom() explicitly to 5193 // notify the WebKit about the new dimensions. 5194 sendViewSizeZoom(false); 5195 } 5196 setGLRectViewport(); 5197 return changed; 5198 } 5199 5200 @Override 5201 protected void onSizeChanged(int w, int h, int ow, int oh) { 5202 super.onSizeChanged(w, h, ow, oh); 5203 5204 // adjust the max viewport width depending on the view dimensions. This 5205 // is to ensure the scaling is not going insane. So do not shrink it if 5206 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5207 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5208 if (newMaxViewportWidth > sMaxViewportWidth) { 5209 sMaxViewportWidth = newMaxViewportWidth; 5210 } 5211 5212 mZoomManager.onSizeChanged(w, h, ow, oh); 5213 } 5214 5215 @Override 5216 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5217 super.onScrollChanged(l, t, oldl, oldt); 5218 if (!mInOverScrollMode) { 5219 sendOurVisibleRect(); 5220 // update WebKit if visible title bar height changed. The logic is same 5221 // as getVisibleTitleHeight. 5222 int titleHeight = getTitleHeight(); 5223 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5224 sendViewSizeZoom(false); 5225 } 5226 } 5227 } 5228 5229 @Override 5230 public boolean dispatchKeyEvent(KeyEvent event) { 5231 boolean dispatch = true; 5232 5233 // Textfields, plugins, and contentEditable nodes need to receive the 5234 // shift up key even if another key was released while the shift key 5235 // was held down. 5236 boolean inEditingMode = inEditingMode(); 5237 if (!inEditingMode && (mNativeClass == 0 5238 || !nativePageShouldHandleShiftAndArrows())) { 5239 if (event.getAction() == KeyEvent.ACTION_DOWN) { 5240 mGotKeyDown = true; 5241 } else { 5242 if (!mGotKeyDown && event.getAction() != KeyEvent.ACTION_MULTIPLE) { 5243 /* 5244 * We got a key up for which we were not the recipient of 5245 * the original key down. Don't give it to the view. 5246 */ 5247 dispatch = false; 5248 } 5249 mGotKeyDown = false; 5250 } 5251 } 5252 5253 if (dispatch) { 5254 if (inEditingMode) { 5255 // Ensure that the WebTextView gets the event, even if it does 5256 // not currently have a bounds. 5257 return mWebTextView.dispatchKeyEvent(event); 5258 } else { 5259 return super.dispatchKeyEvent(event); 5260 } 5261 } else { 5262 // We didn't dispatch, so let something else handle the key 5263 return false; 5264 } 5265 } 5266 5267 // Here are the snap align logic: 5268 // 1. If it starts nearly horizontally or vertically, snap align; 5269 // 2. If there is a dramitic direction change, let it go; 5270 // 3. If there is a same direction back and forth, lock it. 5271 5272 // adjustable parameters 5273 private int mMinLockSnapReverseDistance; 5274 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5275 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5276 5277 private boolean hitFocusedPlugin(int contentX, int contentY) { 5278 if (DebugFlags.WEB_VIEW) { 5279 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5280 Rect r = nativeFocusNodeBounds(); 5281 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5282 + ", " + r.right + ", " + r.bottom + ")"); 5283 } 5284 return nativeFocusIsPlugin() 5285 && nativeFocusNodeBounds().contains(contentX, contentY); 5286 } 5287 5288 private boolean shouldForwardTouchEvent() { 5289 return mFullScreenHolder != null || (mForwardTouchEvents 5290 && !mSelectingText 5291 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5292 } 5293 5294 private boolean inFullScreenMode() { 5295 return mFullScreenHolder != null; 5296 } 5297 5298 private void dismissFullScreenMode() { 5299 if (inFullScreenMode()) { 5300 mFullScreenHolder.dismiss(); 5301 mFullScreenHolder = null; 5302 } 5303 } 5304 5305 void onPinchToZoomAnimationStart() { 5306 // cancel the single touch handling 5307 cancelTouch(); 5308 onZoomAnimationStart(); 5309 } 5310 5311 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5312 onZoomAnimationEnd(); 5313 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5314 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5315 // as it may trigger the unwanted fling. 5316 mTouchMode = TOUCH_PINCH_DRAG; 5317 mConfirmMove = true; 5318 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5319 } 5320 5321 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5322 // layer is found. 5323 private void startScrollingLayer(float x, float y) { 5324 int contentX = viewToContentX((int) x + mScrollX); 5325 int contentY = viewToContentY((int) y + mScrollY); 5326 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5327 mScrollingLayerRect, mScrollingLayerBounds); 5328 if (mScrollingLayer != 0) { 5329 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5330 } 5331 } 5332 5333 // 1/(density * density) used to compute the distance between points. 5334 // Computed in init(). 5335 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5336 5337 // The distance between two points reported in onTouchEvent scaled by the 5338 // density of the screen. 5339 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5340 5341 @Override 5342 public boolean onTouchEvent(MotionEvent ev) { 5343 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5344 return false; 5345 } 5346 5347 if (DebugFlags.WEB_VIEW) { 5348 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5349 + " mTouchMode=" + mTouchMode 5350 + " numPointers=" + ev.getPointerCount()); 5351 } 5352 5353 int action = ev.getActionMasked(); 5354 if (ev.getPointerCount() > 1) { // Multi-touch 5355 mIsHandlingMultiTouch = true; 5356 5357 // If WebKit already showed no interests in this sequence of events, 5358 // WebView handles them directly. 5359 if (mPreventDefault == PREVENT_DEFAULT_NO && action == MotionEvent.ACTION_MOVE) { 5360 handleMultiTouchInWebView(ev); 5361 } else { 5362 passMultiTouchToWebKit(ev); 5363 } 5364 return true; 5365 } 5366 5367 // Skip ACTION_MOVE for single touch if it's still handling multi-touch. 5368 if (mIsHandlingMultiTouch && action == MotionEvent.ACTION_MOVE) { 5369 return false; 5370 } 5371 5372 return handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 5373 } 5374 5375 /* 5376 * Common code for single touch and multi-touch. 5377 * (x, y) denotes current focus point, which is the touch point for single touch 5378 * and the middle point for multi-touch. 5379 */ 5380 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5381 long eventTime = ev.getEventTime(); 5382 5383 5384 // Due to the touch screen edge effect, a touch closer to the edge 5385 // always snapped to the edge. As getViewWidth() can be different from 5386 // getWidth() due to the scrollbar, adjusting the point to match 5387 // getViewWidth(). Same applied to the height. 5388 x = Math.min(x, getViewWidth() - 1); 5389 y = Math.min(y, getViewHeightWithTitle() - 1); 5390 5391 int deltaX = mLastTouchX - x; 5392 int deltaY = mLastTouchY - y; 5393 int contentX = viewToContentX(x + mScrollX); 5394 int contentY = viewToContentY(y + mScrollY); 5395 5396 switch (action) { 5397 case MotionEvent.ACTION_DOWN: { 5398 mPreventDefault = PREVENT_DEFAULT_NO; 5399 mConfirmMove = false; 5400 mIsHandlingMultiTouch = false; 5401 mInitialHitTestResult = null; 5402 if (!mScroller.isFinished()) { 5403 // stop the current scroll animation, but if this is 5404 // the start of a fling, allow it to add to the current 5405 // fling's velocity 5406 mScroller.abortAnimation(); 5407 mTouchMode = TOUCH_DRAG_START_MODE; 5408 mConfirmMove = true; 5409 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5410 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5411 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5412 if (getSettings().supportTouchOnly()) { 5413 removeTouchHighlight(true); 5414 } 5415 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5416 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5417 } else { 5418 // commit the short press action for the previous tap 5419 doShortPress(); 5420 mTouchMode = TOUCH_INIT_MODE; 5421 mDeferTouchProcess = (!inFullScreenMode() 5422 && mForwardTouchEvents) ? hitFocusedPlugin( 5423 contentX, contentY) : false; 5424 } 5425 } else { // the normal case 5426 mTouchMode = TOUCH_INIT_MODE; 5427 mDeferTouchProcess = (!inFullScreenMode() 5428 && mForwardTouchEvents) ? hitFocusedPlugin( 5429 contentX, contentY) : false; 5430 mWebViewCore.sendMessage( 5431 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5432 if (getSettings().supportTouchOnly()) { 5433 TouchHighlightData data = new TouchHighlightData(); 5434 data.mX = contentX; 5435 data.mY = contentY; 5436 data.mSlop = viewToContentDimension(mNavSlop); 5437 mWebViewCore.sendMessageDelayed( 5438 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5439 ViewConfiguration.getTapTimeout()); 5440 if (DEBUG_TOUCH_HIGHLIGHT) { 5441 if (getSettings().getNavDump()) { 5442 mTouchHighlightX = (int) x + mScrollX; 5443 mTouchHighlightY = (int) y + mScrollY; 5444 mPrivateHandler.postDelayed(new Runnable() { 5445 public void run() { 5446 mTouchHighlightX = mTouchHighlightY = 0; 5447 invalidate(); 5448 } 5449 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5450 } 5451 } 5452 } 5453 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5454 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5455 (eventTime - mLastTouchUpTime), eventTime); 5456 } 5457 if (mSelectingText) { 5458 mDrawSelectionPointer = false; 5459 mSelectionStarted = nativeStartSelection(contentX, contentY); 5460 if (DebugFlags.WEB_VIEW) { 5461 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5462 } 5463 invalidate(); 5464 } 5465 } 5466 // Trigger the link 5467 if (mTouchMode == TOUCH_INIT_MODE 5468 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5469 mPrivateHandler.sendEmptyMessageDelayed( 5470 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5471 mPrivateHandler.sendEmptyMessageDelayed( 5472 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5473 if (inFullScreenMode() || mDeferTouchProcess) { 5474 mPreventDefault = PREVENT_DEFAULT_YES; 5475 } else if (mForwardTouchEvents) { 5476 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5477 } else { 5478 mPreventDefault = PREVENT_DEFAULT_NO; 5479 } 5480 // pass the touch events from UI thread to WebCore thread 5481 if (shouldForwardTouchEvent()) { 5482 TouchEventData ted = new TouchEventData(); 5483 ted.mAction = action; 5484 ted.mIds = new int[1]; 5485 ted.mIds[0] = ev.getPointerId(0); 5486 ted.mPoints = new Point[1]; 5487 ted.mPoints[0] = new Point(contentX, contentY); 5488 ted.mMetaState = ev.getMetaState(); 5489 ted.mReprocess = mDeferTouchProcess; 5490 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5491 if (mDeferTouchProcess) { 5492 // still needs to set them for compute deltaX/Y 5493 mLastTouchX = x; 5494 mLastTouchY = y; 5495 break; 5496 } 5497 if (!inFullScreenMode()) { 5498 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5499 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5500 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5501 action, 0), TAP_TIMEOUT); 5502 } 5503 } 5504 } 5505 startTouch(x, y, eventTime); 5506 break; 5507 } 5508 case MotionEvent.ACTION_MOVE: { 5509 boolean firstMove = false; 5510 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5511 >= mTouchSlopSquare) { 5512 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5513 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5514 mConfirmMove = true; 5515 firstMove = true; 5516 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5517 mTouchMode = TOUCH_INIT_MODE; 5518 } 5519 if (getSettings().supportTouchOnly()) { 5520 removeTouchHighlight(true); 5521 } 5522 } 5523 // pass the touch events from UI thread to WebCore thread 5524 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5525 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5526 TouchEventData ted = new TouchEventData(); 5527 ted.mAction = action; 5528 ted.mIds = new int[1]; 5529 ted.mIds[0] = ev.getPointerId(0); 5530 ted.mPoints = new Point[1]; 5531 ted.mPoints[0] = new Point(contentX, contentY); 5532 ted.mMetaState = ev.getMetaState(); 5533 ted.mReprocess = mDeferTouchProcess; 5534 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5535 mLastSentTouchTime = eventTime; 5536 if (mDeferTouchProcess) { 5537 break; 5538 } 5539 if (firstMove && !inFullScreenMode()) { 5540 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5541 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5542 action, 0), TAP_TIMEOUT); 5543 } 5544 } 5545 if (mTouchMode == TOUCH_DONE_MODE 5546 || mPreventDefault == PREVENT_DEFAULT_YES) { 5547 // no dragging during scroll zoom animation, or when prevent 5548 // default is yes 5549 break; 5550 } 5551 if (mVelocityTracker == null) { 5552 Log.e(LOGTAG, "Got null mVelocityTracker when " 5553 + "mPreventDefault = " + mPreventDefault 5554 + " mDeferTouchProcess = " + mDeferTouchProcess 5555 + " mTouchMode = " + mTouchMode); 5556 } else { 5557 mVelocityTracker.addMovement(ev); 5558 } 5559 if (mSelectingText && mSelectionStarted) { 5560 if (DebugFlags.WEB_VIEW) { 5561 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5562 } 5563 ViewParent parent = getParent(); 5564 if (parent != null) { 5565 parent.requestDisallowInterceptTouchEvent(true); 5566 } 5567 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5568 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5569 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5570 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5571 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5572 && !mSentAutoScrollMessage) { 5573 mSentAutoScrollMessage = true; 5574 mPrivateHandler.sendEmptyMessageDelayed( 5575 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5576 } 5577 if (deltaX != 0 || deltaY != 0) { 5578 nativeExtendSelection(contentX, contentY); 5579 invalidate(); 5580 } 5581 break; 5582 } 5583 5584 if (mTouchMode != TOUCH_DRAG_MODE && 5585 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5586 5587 if (!mConfirmMove) { 5588 break; 5589 } 5590 5591 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5592 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5593 // track mLastTouchTime as we may need to do fling at 5594 // ACTION_UP 5595 mLastTouchTime = eventTime; 5596 break; 5597 } 5598 5599 // Only lock dragging to one axis if we don't have a scale in progress. 5600 // Scaling implies free-roaming movement. Note this is only ever a question 5601 // if mZoomManager.supportsPanDuringZoom() is true. 5602 final ScaleGestureDetector detector = 5603 mZoomManager.getMultiTouchGestureDetector(); 5604 if (detector == null || !detector.isInProgress()) { 5605 // if it starts nearly horizontal or vertical, enforce it 5606 int ax = Math.abs(deltaX); 5607 int ay = Math.abs(deltaY); 5608 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5609 mSnapScrollMode = SNAP_X; 5610 mSnapPositive = deltaX > 0; 5611 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5612 mSnapScrollMode = SNAP_Y; 5613 mSnapPositive = deltaY > 0; 5614 } 5615 } 5616 5617 mTouchMode = TOUCH_DRAG_MODE; 5618 mLastTouchX = x; 5619 mLastTouchY = y; 5620 deltaX = 0; 5621 deltaY = 0; 5622 5623 startScrollingLayer(x, y); 5624 startDrag(); 5625 } 5626 5627 // do pan 5628 boolean done = false; 5629 boolean keepScrollBarsVisible = false; 5630 if (deltaX == 0 && deltaY == 0) { 5631 keepScrollBarsVisible = done = true; 5632 } else { 5633 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5634 int ax = Math.abs(deltaX); 5635 int ay = Math.abs(deltaY); 5636 if (mSnapScrollMode == SNAP_X) { 5637 // radical change means getting out of snap mode 5638 if (ay > MAX_SLOPE_FOR_DIAG * ax 5639 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5640 mSnapScrollMode = SNAP_NONE; 5641 } 5642 // reverse direction means lock in the snap mode 5643 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5644 (mSnapPositive 5645 ? deltaX < -mMinLockSnapReverseDistance 5646 : deltaX > mMinLockSnapReverseDistance)) { 5647 mSnapScrollMode |= SNAP_LOCK; 5648 } 5649 } else { 5650 // radical change means getting out of snap mode 5651 if (ax > MAX_SLOPE_FOR_DIAG * ay 5652 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5653 mSnapScrollMode = SNAP_NONE; 5654 } 5655 // reverse direction means lock in the snap mode 5656 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5657 (mSnapPositive 5658 ? deltaY < -mMinLockSnapReverseDistance 5659 : deltaY > mMinLockSnapReverseDistance)) { 5660 mSnapScrollMode |= SNAP_LOCK; 5661 } 5662 } 5663 } 5664 if (mSnapScrollMode != SNAP_NONE) { 5665 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5666 deltaY = 0; 5667 } else { 5668 deltaX = 0; 5669 } 5670 } 5671 if ((deltaX | deltaY) != 0) { 5672 if (deltaX != 0) { 5673 mLastTouchX = x; 5674 } 5675 if (deltaY != 0) { 5676 mLastTouchY = y; 5677 } 5678 mHeldMotionless = MOTIONLESS_FALSE; 5679 } 5680 mLastTouchTime = eventTime; 5681 mUserScroll = true; 5682 } 5683 5684 doDrag(deltaX, deltaY); 5685 5686 // Turn off scrollbars when dragging a layer. 5687 if (keepScrollBarsVisible && 5688 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5689 if (mHeldMotionless != MOTIONLESS_TRUE) { 5690 mHeldMotionless = MOTIONLESS_TRUE; 5691 invalidate(); 5692 } 5693 // keep the scrollbar on the screen even there is no scroll 5694 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5695 false); 5696 // return false to indicate that we can't pan out of the 5697 // view space 5698 return !done; 5699 } 5700 break; 5701 } 5702 case MotionEvent.ACTION_UP: { 5703 if (!isFocused()) requestFocus(); 5704 // pass the touch events from UI thread to WebCore thread 5705 if (shouldForwardTouchEvent()) { 5706 TouchEventData ted = new TouchEventData(); 5707 ted.mIds = new int[1]; 5708 ted.mIds[0] = ev.getPointerId(0); 5709 ted.mAction = action; 5710 ted.mPoints = new Point[1]; 5711 ted.mPoints[0] = new Point(contentX, contentY); 5712 ted.mMetaState = ev.getMetaState(); 5713 ted.mReprocess = mDeferTouchProcess; 5714 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5715 } 5716 mLastTouchUpTime = eventTime; 5717 if (mSentAutoScrollMessage) { 5718 mAutoScrollX = mAutoScrollY = 0; 5719 } 5720 switch (mTouchMode) { 5721 case TOUCH_DOUBLE_TAP_MODE: // double tap 5722 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5723 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5724 if (inFullScreenMode() || mDeferTouchProcess) { 5725 TouchEventData ted = new TouchEventData(); 5726 ted.mIds = new int[1]; 5727 ted.mIds[0] = ev.getPointerId(0); 5728 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5729 ted.mPoints = new Point[1]; 5730 ted.mPoints[0] = new Point(contentX, contentY); 5731 ted.mMetaState = ev.getMetaState(); 5732 ted.mReprocess = mDeferTouchProcess; 5733 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5734 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5735 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5736 mTouchMode = TOUCH_DONE_MODE; 5737 } 5738 break; 5739 case TOUCH_INIT_MODE: // tap 5740 case TOUCH_SHORTPRESS_START_MODE: 5741 case TOUCH_SHORTPRESS_MODE: 5742 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5743 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5744 if (mConfirmMove) { 5745 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5746 " WebCore's response for touch down."); 5747 if (mPreventDefault != PREVENT_DEFAULT_YES 5748 && (computeMaxScrollX() > 0 5749 || computeMaxScrollY() > 0)) { 5750 // If the user has performed a very quick touch 5751 // sequence it is possible that we may get here 5752 // before WebCore has had a chance to process the events. 5753 // In this case, any call to preventDefault in the 5754 // JS touch handler will not have been executed yet. 5755 // Hence we will see both the UI (now) and WebCore 5756 // (when context switches) handling the event, 5757 // regardless of whether the web developer actually 5758 // doeses preventDefault in their touch handler. This 5759 // is the nature of our asynchronous touch model. 5760 5761 // we will not rewrite drag code here, but we 5762 // will try fling if it applies. 5763 WebViewCore.reducePriority(); 5764 // to get better performance, pause updating the 5765 // picture 5766 WebViewCore.pauseUpdatePicture(mWebViewCore); 5767 // fall through to TOUCH_DRAG_MODE 5768 } else { 5769 // WebKit may consume the touch event and modify 5770 // DOM. drawContentPicture() will be called with 5771 // animateSroll as true for better performance. 5772 // Force redraw in high-quality. 5773 invalidate(); 5774 break; 5775 } 5776 } else { 5777 if (mSelectingText) { 5778 // tapping on selection or controls does nothing 5779 if (!nativeHitSelection(contentX, contentY)) { 5780 selectionDone(); 5781 } 5782 break; 5783 } 5784 // only trigger double tap if the WebView is 5785 // scalable 5786 if (mTouchMode == TOUCH_INIT_MODE 5787 && (canZoomIn() || canZoomOut())) { 5788 mPrivateHandler.sendEmptyMessageDelayed( 5789 RELEASE_SINGLE_TAP, ViewConfiguration 5790 .getDoubleTapTimeout()); 5791 } else { 5792 doShortPress(); 5793 } 5794 break; 5795 } 5796 case TOUCH_DRAG_MODE: 5797 case TOUCH_DRAG_LAYER_MODE: 5798 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5799 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5800 // if the user waits a while w/o moving before the 5801 // up, we don't want to do a fling 5802 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5803 if (mVelocityTracker == null) { 5804 Log.e(LOGTAG, "Got null mVelocityTracker when " 5805 + "mPreventDefault = " 5806 + mPreventDefault 5807 + " mDeferTouchProcess = " 5808 + mDeferTouchProcess); 5809 } else { 5810 mVelocityTracker.addMovement(ev); 5811 } 5812 // set to MOTIONLESS_IGNORE so that it won't keep 5813 // removing and sending message in 5814 // drawCoreAndCursorRing() 5815 mHeldMotionless = MOTIONLESS_IGNORE; 5816 doFling(); 5817 break; 5818 } else { 5819 if (mScroller.springBack(mScrollX, mScrollY, 0, 5820 computeMaxScrollX(), 0, 5821 computeMaxScrollY())) { 5822 invalidate(); 5823 } 5824 } 5825 // redraw in high-quality, as we're done dragging 5826 mHeldMotionless = MOTIONLESS_TRUE; 5827 invalidate(); 5828 // fall through 5829 case TOUCH_DRAG_START_MODE: 5830 // TOUCH_DRAG_START_MODE should not happen for the real 5831 // device as we almost certain will get a MOVE. But this 5832 // is possible on emulator. 5833 mLastVelocity = 0; 5834 WebViewCore.resumePriority(); 5835 if (!mSelectingText) { 5836 WebViewCore.resumeUpdatePicture(mWebViewCore); 5837 } 5838 break; 5839 } 5840 stopTouch(); 5841 break; 5842 } 5843 case MotionEvent.ACTION_CANCEL: { 5844 if (mTouchMode == TOUCH_DRAG_MODE) { 5845 mScroller.springBack(mScrollX, mScrollY, 0, 5846 computeMaxScrollX(), 0, computeMaxScrollY()); 5847 invalidate(); 5848 } 5849 cancelWebCoreTouchEvent(contentX, contentY, false); 5850 cancelTouch(); 5851 break; 5852 } 5853 } 5854 return true; 5855 } 5856 5857 private void passMultiTouchToWebKit(MotionEvent ev) { 5858 TouchEventData ted = new TouchEventData(); 5859 ted.mAction = ev.getActionMasked(); 5860 final int count = ev.getPointerCount(); 5861 ted.mIds = new int[count]; 5862 ted.mPoints = new Point[count]; 5863 for (int c = 0; c < count; c++) { 5864 ted.mIds[c] = ev.getPointerId(c); 5865 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5866 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5867 ted.mPoints[c] = new Point(x, y); 5868 } 5869 ted.mMetaState = ev.getMetaState(); 5870 ted.mReprocess = true; 5871 ted.mMotionEvent = MotionEvent.obtain(ev); 5872 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5873 cancelLongPress(); 5874 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5875 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5876 } 5877 5878 private void handleMultiTouchInWebView(MotionEvent ev) { 5879 if (DebugFlags.WEB_VIEW) { 5880 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 5881 + " mTouchMode=" + mTouchMode 5882 + " numPointers=" + ev.getPointerCount() 5883 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 5884 } 5885 5886 final ScaleGestureDetector detector = 5887 mZoomManager.getMultiTouchGestureDetector(); 5888 5889 // A few apps use WebView but don't instantiate gesture detector. 5890 // We don't need to support multi touch for them. 5891 if (detector == null) return; 5892 5893 float x = ev.getX(); 5894 float y = ev.getY(); 5895 5896 if (!detector.isInProgress() && 5897 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 5898 // Insert a fake pointer down event in order to start 5899 // the zoom scale detector. 5900 MotionEvent temp = MotionEvent.obtain(ev); 5901 // Clear the original event and set it to 5902 // ACTION_POINTER_DOWN. 5903 try { 5904 temp.setAction(temp.getAction() & 5905 ~MotionEvent.ACTION_MASK | 5906 MotionEvent.ACTION_POINTER_DOWN); 5907 detector.onTouchEvent(temp); 5908 } finally { 5909 temp.recycle(); 5910 } 5911 } 5912 5913 detector.onTouchEvent(ev); 5914 5915 if (detector.isInProgress()) { 5916 if (DebugFlags.WEB_VIEW) { 5917 Log.v(LOGTAG, "detector is in progress"); 5918 } 5919 mLastTouchTime = ev.getEventTime(); 5920 x = detector.getFocusX(); 5921 y = detector.getFocusY(); 5922 5923 cancelLongPress(); 5924 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5925 if (!mZoomManager.supportsPanDuringZoom()) { 5926 return; 5927 } 5928 mTouchMode = TOUCH_DRAG_MODE; 5929 if (mVelocityTracker == null) { 5930 mVelocityTracker = VelocityTracker.obtain(); 5931 } 5932 } 5933 5934 int action = ev.getActionMasked(); 5935 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5936 cancelTouch(); 5937 action = MotionEvent.ACTION_DOWN; 5938 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5939 // set mLastTouchX/Y to the remaining point 5940 mLastTouchX = Math.round(x); 5941 mLastTouchY = Math.round(y); 5942 mIsHandlingMultiTouch = false; 5943 } else if (action == MotionEvent.ACTION_MOVE) { 5944 // negative x or y indicate it is on the edge, skip it. 5945 if (x < 0 || y < 0) { 5946 return; 5947 } 5948 } 5949 5950 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 5951 } 5952 5953 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5954 if (shouldForwardTouchEvent()) { 5955 if (removeEvents) { 5956 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5957 } 5958 TouchEventData ted = new TouchEventData(); 5959 ted.mIds = new int[1]; 5960 ted.mIds[0] = 0; 5961 ted.mPoints = new Point[1]; 5962 ted.mPoints[0] = new Point(x, y); 5963 ted.mAction = MotionEvent.ACTION_CANCEL; 5964 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5965 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5966 } 5967 } 5968 5969 private void startTouch(float x, float y, long eventTime) { 5970 // Remember where the motion event started 5971 mLastTouchX = Math.round(x); 5972 mLastTouchY = Math.round(y); 5973 mLastTouchTime = eventTime; 5974 mVelocityTracker = VelocityTracker.obtain(); 5975 mSnapScrollMode = SNAP_NONE; 5976 } 5977 5978 private void startDrag() { 5979 WebViewCore.reducePriority(); 5980 // to get better performance, pause updating the picture 5981 WebViewCore.pauseUpdatePicture(mWebViewCore); 5982 if (!mDragFromTextInput) { 5983 nativeHideCursor(); 5984 } 5985 5986 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5987 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 5988 mZoomManager.invokeZoomPicker(); 5989 } 5990 } 5991 5992 private void doDrag(int deltaX, int deltaY) { 5993 if ((deltaX | deltaY) != 0) { 5994 int oldX = mScrollX; 5995 int oldY = mScrollY; 5996 int rangeX = computeMaxScrollX(); 5997 int rangeY = computeMaxScrollY(); 5998 int overscrollDistance = mOverscrollDistance; 5999 6000 // Check for the original scrolling layer in case we change 6001 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6002 // reached the edge of a layer but mScrollingLayer will be non-zero 6003 // if we initiated the drag on a layer. 6004 if (mScrollingLayer != 0) { 6005 final int contentX = viewToContentDimension(deltaX); 6006 final int contentY = viewToContentDimension(deltaY); 6007 6008 // Check the scrolling bounds to see if we will actually do any 6009 // scrolling. The rectangle is in document coordinates. 6010 final int maxX = mScrollingLayerRect.right; 6011 final int maxY = mScrollingLayerRect.bottom; 6012 final int resultX = Math.max(0, 6013 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6014 final int resultY = Math.max(0, 6015 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6016 6017 if (resultX != mScrollingLayerRect.left || 6018 resultY != mScrollingLayerRect.top) { 6019 // In case we switched to dragging the page. 6020 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6021 deltaX = contentX; 6022 deltaY = contentY; 6023 oldX = mScrollingLayerRect.left; 6024 oldY = mScrollingLayerRect.top; 6025 rangeX = maxX; 6026 rangeY = maxY; 6027 } else { 6028 // Scroll the main page if we are not going to scroll the 6029 // layer. This does not reset mScrollingLayer in case the 6030 // user changes directions and the layer can scroll the 6031 // other way. 6032 mTouchMode = TOUCH_DRAG_MODE; 6033 } 6034 } 6035 6036 if (mOverScrollGlow != null) { 6037 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6038 } 6039 6040 overScrollBy(deltaX, deltaY, oldX, oldY, 6041 rangeX, rangeY, 6042 mOverscrollDistance, mOverscrollDistance, true); 6043 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6044 invalidate(); 6045 } 6046 } 6047 mZoomManager.keepZoomPickerVisible(); 6048 } 6049 6050 private void stopTouch() { 6051 // we also use mVelocityTracker == null to tell us that we are 6052 // not "moving around", so we can take the slower/prettier 6053 // mode in the drawing code 6054 if (mVelocityTracker != null) { 6055 mVelocityTracker.recycle(); 6056 mVelocityTracker = null; 6057 } 6058 6059 // Release any pulled glows 6060 if (mOverScrollGlow != null) { 6061 mOverScrollGlow.releaseAll(); 6062 } 6063 } 6064 6065 private void cancelTouch() { 6066 // we also use mVelocityTracker == null to tell us that we are 6067 // not "moving around", so we can take the slower/prettier 6068 // mode in the drawing code 6069 if (mVelocityTracker != null) { 6070 mVelocityTracker.recycle(); 6071 mVelocityTracker = null; 6072 } 6073 6074 if ((mTouchMode == TOUCH_DRAG_MODE 6075 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6076 WebViewCore.resumePriority(); 6077 WebViewCore.resumeUpdatePicture(mWebViewCore); 6078 } 6079 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6080 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6081 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6082 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6083 if (getSettings().supportTouchOnly()) { 6084 removeTouchHighlight(true); 6085 } 6086 mHeldMotionless = MOTIONLESS_TRUE; 6087 mTouchMode = TOUCH_DONE_MODE; 6088 nativeHideCursor(); 6089 } 6090 6091 private long mTrackballFirstTime = 0; 6092 private long mTrackballLastTime = 0; 6093 private float mTrackballRemainsX = 0.0f; 6094 private float mTrackballRemainsY = 0.0f; 6095 private int mTrackballXMove = 0; 6096 private int mTrackballYMove = 0; 6097 private boolean mSelectingText = false; 6098 private boolean mSelectionStarted = false; 6099 private boolean mExtendSelection = false; 6100 private boolean mDrawSelectionPointer = false; 6101 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6102 private static final int TRACKBALL_TIMEOUT = 200; 6103 private static final int TRACKBALL_WAIT = 100; 6104 private static final int TRACKBALL_SCALE = 400; 6105 private static final int TRACKBALL_SCROLL_COUNT = 5; 6106 private static final int TRACKBALL_MOVE_COUNT = 10; 6107 private static final int TRACKBALL_MULTIPLIER = 3; 6108 private static final int SELECT_CURSOR_OFFSET = 16; 6109 private static final int SELECT_SCROLL = 5; 6110 private int mSelectX = 0; 6111 private int mSelectY = 0; 6112 private boolean mFocusSizeChanged = false; 6113 private boolean mTrackballDown = false; 6114 private long mTrackballUpTime = 0; 6115 private long mLastCursorTime = 0; 6116 private Rect mLastCursorBounds; 6117 6118 // Set by default; BrowserActivity clears to interpret trackball data 6119 // directly for movement. Currently, the framework only passes 6120 // arrow key events, not trackball events, from one child to the next 6121 private boolean mMapTrackballToArrowKeys = true; 6122 6123 public void setMapTrackballToArrowKeys(boolean setMap) { 6124 mMapTrackballToArrowKeys = setMap; 6125 } 6126 6127 void resetTrackballTime() { 6128 mTrackballLastTime = 0; 6129 } 6130 6131 @Override 6132 public boolean onTrackballEvent(MotionEvent ev) { 6133 long time = ev.getEventTime(); 6134 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6135 if (ev.getY() > 0) pageDown(true); 6136 if (ev.getY() < 0) pageUp(true); 6137 return true; 6138 } 6139 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6140 if (mSelectingText) { 6141 return true; // discard press if copy in progress 6142 } 6143 mTrackballDown = true; 6144 if (mNativeClass == 0) { 6145 return false; 6146 } 6147 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6148 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6149 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6150 nativeSelectBestAt(mLastCursorBounds); 6151 } 6152 if (DebugFlags.WEB_VIEW) { 6153 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6154 + " time=" + time 6155 + " mLastCursorTime=" + mLastCursorTime); 6156 } 6157 if (isInTouchMode()) requestFocusFromTouch(); 6158 return false; // let common code in onKeyDown at it 6159 } 6160 if (ev.getAction() == MotionEvent.ACTION_UP) { 6161 // LONG_PRESS_CENTER is set in common onKeyDown 6162 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6163 mTrackballDown = false; 6164 mTrackballUpTime = time; 6165 if (mSelectingText) { 6166 if (mExtendSelection) { 6167 copySelection(); 6168 selectionDone(); 6169 } else { 6170 mExtendSelection = true; 6171 nativeSetExtendSelection(); 6172 invalidate(); // draw the i-beam instead of the arrow 6173 } 6174 return true; // discard press if copy in progress 6175 } 6176 if (DebugFlags.WEB_VIEW) { 6177 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6178 + " time=" + time 6179 ); 6180 } 6181 return false; // let common code in onKeyUp at it 6182 } 6183 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6184 AccessibilityManager.getInstance(mContext).isEnabled()) { 6185 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6186 return false; 6187 } 6188 if (mTrackballDown) { 6189 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6190 return true; // discard move if trackball is down 6191 } 6192 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6193 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6194 return true; 6195 } 6196 // TODO: alternatively we can do panning as touch does 6197 switchOutDrawHistory(); 6198 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6199 if (DebugFlags.WEB_VIEW) { 6200 Log.v(LOGTAG, "onTrackballEvent time=" 6201 + time + " last=" + mTrackballLastTime); 6202 } 6203 mTrackballFirstTime = time; 6204 mTrackballXMove = mTrackballYMove = 0; 6205 } 6206 mTrackballLastTime = time; 6207 if (DebugFlags.WEB_VIEW) { 6208 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6209 } 6210 mTrackballRemainsX += ev.getX(); 6211 mTrackballRemainsY += ev.getY(); 6212 doTrackball(time, ev.getMetaState()); 6213 return true; 6214 } 6215 6216 void moveSelection(float xRate, float yRate) { 6217 if (mNativeClass == 0) 6218 return; 6219 int width = getViewWidth(); 6220 int height = getViewHeight(); 6221 mSelectX += xRate; 6222 mSelectY += yRate; 6223 int maxX = width + mScrollX; 6224 int maxY = height + mScrollY; 6225 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6226 , mSelectX)); 6227 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6228 , mSelectY)); 6229 if (DebugFlags.WEB_VIEW) { 6230 Log.v(LOGTAG, "moveSelection" 6231 + " mSelectX=" + mSelectX 6232 + " mSelectY=" + mSelectY 6233 + " mScrollX=" + mScrollX 6234 + " mScrollY=" + mScrollY 6235 + " xRate=" + xRate 6236 + " yRate=" + yRate 6237 ); 6238 } 6239 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6240 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6241 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6242 : 0; 6243 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6244 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6245 : 0; 6246 pinScrollBy(scrollX, scrollY, true, 0); 6247 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6248 requestRectangleOnScreen(select); 6249 invalidate(); 6250 } 6251 6252 private int scaleTrackballX(float xRate, int width) { 6253 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6254 int nextXMove = xMove; 6255 if (xMove > 0) { 6256 if (xMove > mTrackballXMove) { 6257 xMove -= mTrackballXMove; 6258 } 6259 } else if (xMove < mTrackballXMove) { 6260 xMove -= mTrackballXMove; 6261 } 6262 mTrackballXMove = nextXMove; 6263 return xMove; 6264 } 6265 6266 private int scaleTrackballY(float yRate, int height) { 6267 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6268 int nextYMove = yMove; 6269 if (yMove > 0) { 6270 if (yMove > mTrackballYMove) { 6271 yMove -= mTrackballYMove; 6272 } 6273 } else if (yMove < mTrackballYMove) { 6274 yMove -= mTrackballYMove; 6275 } 6276 mTrackballYMove = nextYMove; 6277 return yMove; 6278 } 6279 6280 private int keyCodeToSoundsEffect(int keyCode) { 6281 switch(keyCode) { 6282 case KeyEvent.KEYCODE_DPAD_UP: 6283 return SoundEffectConstants.NAVIGATION_UP; 6284 case KeyEvent.KEYCODE_DPAD_RIGHT: 6285 return SoundEffectConstants.NAVIGATION_RIGHT; 6286 case KeyEvent.KEYCODE_DPAD_DOWN: 6287 return SoundEffectConstants.NAVIGATION_DOWN; 6288 case KeyEvent.KEYCODE_DPAD_LEFT: 6289 return SoundEffectConstants.NAVIGATION_LEFT; 6290 } 6291 throw new IllegalArgumentException("keyCode must be one of " + 6292 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6293 "KEYCODE_DPAD_LEFT}."); 6294 } 6295 6296 private void doTrackball(long time, int metaState) { 6297 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6298 if (elapsed == 0) { 6299 elapsed = TRACKBALL_TIMEOUT; 6300 } 6301 float xRate = mTrackballRemainsX * 1000 / elapsed; 6302 float yRate = mTrackballRemainsY * 1000 / elapsed; 6303 int viewWidth = getViewWidth(); 6304 int viewHeight = getViewHeight(); 6305 if (mSelectingText) { 6306 if (!mDrawSelectionPointer) { 6307 // The last selection was made by touch, disabling drawing the 6308 // selection pointer. Allow the trackball to adjust the 6309 // position of the touch control. 6310 mSelectX = contentToViewX(nativeSelectionX()); 6311 mSelectY = contentToViewY(nativeSelectionY()); 6312 mDrawSelectionPointer = mExtendSelection = true; 6313 nativeSetExtendSelection(); 6314 } 6315 moveSelection(scaleTrackballX(xRate, viewWidth), 6316 scaleTrackballY(yRate, viewHeight)); 6317 mTrackballRemainsX = mTrackballRemainsY = 0; 6318 return; 6319 } 6320 float ax = Math.abs(xRate); 6321 float ay = Math.abs(yRate); 6322 float maxA = Math.max(ax, ay); 6323 if (DebugFlags.WEB_VIEW) { 6324 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6325 + " xRate=" + xRate 6326 + " yRate=" + yRate 6327 + " mTrackballRemainsX=" + mTrackballRemainsX 6328 + " mTrackballRemainsY=" + mTrackballRemainsY); 6329 } 6330 int width = mContentWidth - viewWidth; 6331 int height = mContentHeight - viewHeight; 6332 if (width < 0) width = 0; 6333 if (height < 0) height = 0; 6334 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6335 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6336 maxA = Math.max(ax, ay); 6337 int count = Math.max(0, (int) maxA); 6338 int oldScrollX = mScrollX; 6339 int oldScrollY = mScrollY; 6340 if (count > 0) { 6341 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6342 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6343 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6344 KeyEvent.KEYCODE_DPAD_RIGHT; 6345 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6346 if (DebugFlags.WEB_VIEW) { 6347 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6348 + " count=" + count 6349 + " mTrackballRemainsX=" + mTrackballRemainsX 6350 + " mTrackballRemainsY=" + mTrackballRemainsY); 6351 } 6352 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6353 for (int i = 0; i < count; i++) { 6354 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6355 } 6356 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6357 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6358 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6359 } 6360 mTrackballRemainsX = mTrackballRemainsY = 0; 6361 } 6362 if (count >= TRACKBALL_SCROLL_COUNT) { 6363 int xMove = scaleTrackballX(xRate, width); 6364 int yMove = scaleTrackballY(yRate, height); 6365 if (DebugFlags.WEB_VIEW) { 6366 Log.v(LOGTAG, "doTrackball pinScrollBy" 6367 + " count=" + count 6368 + " xMove=" + xMove + " yMove=" + yMove 6369 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6370 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6371 ); 6372 } 6373 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6374 xMove = 0; 6375 } 6376 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6377 yMove = 0; 6378 } 6379 if (xMove != 0 || yMove != 0) { 6380 pinScrollBy(xMove, yMove, true, 0); 6381 } 6382 mUserScroll = true; 6383 } 6384 } 6385 6386 /** 6387 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6388 * @return Maximum horizontal scroll position within real content 6389 */ 6390 int computeMaxScrollX() { 6391 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6392 } 6393 6394 /** 6395 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6396 * @return Maximum vertical scroll position within real content 6397 */ 6398 int computeMaxScrollY() { 6399 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6400 - getViewHeightWithTitle(), 0); 6401 } 6402 6403 boolean updateScrollCoordinates(int x, int y) { 6404 int oldX = mScrollX; 6405 int oldY = mScrollY; 6406 mScrollX = x; 6407 mScrollY = y; 6408 if (oldX != mScrollX || oldY != mScrollY) { 6409 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6410 return true; 6411 } else { 6412 return false; 6413 } 6414 } 6415 6416 public void flingScroll(int vx, int vy) { 6417 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6418 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6419 invalidate(); 6420 } 6421 6422 private void doFling() { 6423 if (mVelocityTracker == null) { 6424 return; 6425 } 6426 int maxX = computeMaxScrollX(); 6427 int maxY = computeMaxScrollY(); 6428 6429 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6430 int vx = (int) mVelocityTracker.getXVelocity(); 6431 int vy = (int) mVelocityTracker.getYVelocity(); 6432 6433 int scrollX = mScrollX; 6434 int scrollY = mScrollY; 6435 int overscrollDistance = mOverscrollDistance; 6436 int overflingDistance = mOverflingDistance; 6437 6438 // Use the layer's scroll data if applicable. 6439 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6440 scrollX = mScrollingLayerRect.left; 6441 scrollY = mScrollingLayerRect.top; 6442 maxX = mScrollingLayerRect.right; 6443 maxY = mScrollingLayerRect.bottom; 6444 // No overscrolling for layers. 6445 overscrollDistance = overflingDistance = 0; 6446 } 6447 6448 if (mSnapScrollMode != SNAP_NONE) { 6449 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6450 vy = 0; 6451 } else { 6452 vx = 0; 6453 } 6454 } 6455 if (true /* EMG release: make our fling more like Maps' */) { 6456 // maps cuts their velocity in half 6457 vx = vx * 3 / 4; 6458 vy = vy * 3 / 4; 6459 } 6460 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6461 WebViewCore.resumePriority(); 6462 if (!mSelectingText) { 6463 WebViewCore.resumeUpdatePicture(mWebViewCore); 6464 } 6465 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6466 invalidate(); 6467 } 6468 return; 6469 } 6470 float currentVelocity = mScroller.getCurrVelocity(); 6471 float velocity = (float) Math.hypot(vx, vy); 6472 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6473 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6474 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6475 - Math.atan2(vy, vx))); 6476 final float circle = (float) (Math.PI) * 2.0f; 6477 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6478 vx += currentVelocity * mLastVelX / mLastVelocity; 6479 vy += currentVelocity * mLastVelY / mLastVelocity; 6480 velocity = (float) Math.hypot(vx, vy); 6481 if (DebugFlags.WEB_VIEW) { 6482 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6483 } 6484 } else if (DebugFlags.WEB_VIEW) { 6485 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6486 } 6487 } else if (DebugFlags.WEB_VIEW) { 6488 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6489 + " current=" + currentVelocity 6490 + " vx=" + vx + " vy=" + vy 6491 + " maxX=" + maxX + " maxY=" + maxY 6492 + " scrollX=" + scrollX + " scrollY=" + scrollY 6493 + " layer=" + mScrollingLayer); 6494 } 6495 6496 // Allow sloppy flings without overscrolling at the edges. 6497 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6498 vx = 0; 6499 } 6500 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6501 vy = 0; 6502 } 6503 6504 if (overscrollDistance < overflingDistance) { 6505 if ((vx > 0 && scrollX == -overscrollDistance) || 6506 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6507 vx = 0; 6508 } 6509 if ((vy > 0 && scrollY == -overscrollDistance) || 6510 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6511 vy = 0; 6512 } 6513 } 6514 6515 mLastVelX = vx; 6516 mLastVelY = vy; 6517 mLastVelocity = velocity; 6518 6519 // no horizontal overscroll if the content just fits 6520 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6521 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6522 // Duration is calculated based on velocity. With range boundaries and overscroll 6523 // we may not know how long the final animation will take. (Hence the deprecation 6524 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6525 // resumes during this effect we will take a performance hit. See computeScroll; 6526 // we resume webcore there when the animation is finished. 6527 final int time = mScroller.getDuration(); 6528 6529 // Suppress scrollbars for layer scrolling. 6530 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6531 awakenScrollBars(time); 6532 } 6533 6534 invalidate(); 6535 } 6536 6537 /** 6538 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6539 * in charge of installing this view to the view hierarchy. This view will 6540 * become visible when the user starts scrolling via touch and fade away if 6541 * the user does not interact with it. 6542 * <p/> 6543 * API version 3 introduces a built-in zoom mechanism that is shown 6544 * automatically by the MapView. This is the preferred approach for 6545 * showing the zoom UI. 6546 * 6547 * @deprecated The built-in zoom mechanism is preferred, see 6548 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6549 */ 6550 @Deprecated 6551 public View getZoomControls() { 6552 if (!getSettings().supportZoom()) { 6553 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6554 return null; 6555 } 6556 return mZoomManager.getExternalZoomPicker(); 6557 } 6558 6559 void dismissZoomControl() { 6560 mZoomManager.dismissZoomPicker(); 6561 } 6562 6563 float getDefaultZoomScale() { 6564 return mZoomManager.getDefaultScale(); 6565 } 6566 6567 /** 6568 * @return TRUE if the WebView can be zoomed in. 6569 */ 6570 public boolean canZoomIn() { 6571 return mZoomManager.canZoomIn(); 6572 } 6573 6574 /** 6575 * @return TRUE if the WebView can be zoomed out. 6576 */ 6577 public boolean canZoomOut() { 6578 return mZoomManager.canZoomOut(); 6579 } 6580 6581 /** 6582 * Perform zoom in in the webview 6583 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6584 */ 6585 public boolean zoomIn() { 6586 return mZoomManager.zoomIn(); 6587 } 6588 6589 /** 6590 * Perform zoom out in the webview 6591 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6592 */ 6593 public boolean zoomOut() { 6594 return mZoomManager.zoomOut(); 6595 } 6596 6597 private void updateSelection() { 6598 if (mNativeClass == 0) { 6599 return; 6600 } 6601 // mLastTouchX and mLastTouchY are the point in the current viewport 6602 int contentX = viewToContentX(mLastTouchX + mScrollX); 6603 int contentY = viewToContentY(mLastTouchY + mScrollY); 6604 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6605 contentX + mNavSlop, contentY + mNavSlop); 6606 nativeSelectBestAt(rect); 6607 mInitialHitTestResult = hitTestResult(null); 6608 } 6609 6610 /** 6611 * Scroll the focused text field to match the WebTextView 6612 * @param xPercent New x position of the WebTextView from 0 to 1. 6613 */ 6614 /*package*/ void scrollFocusedTextInputX(float xPercent) { 6615 if (!inEditingMode() || mWebViewCore == null) { 6616 return; 6617 } 6618 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 6619 new Float(xPercent)); 6620 } 6621 6622 /** 6623 * Scroll the focused textarea vertically to match the WebTextView 6624 * @param y New y position of the WebTextView in view coordinates 6625 */ 6626 /* package */ void scrollFocusedTextInputY(int y) { 6627 if (!inEditingMode()) { 6628 return; 6629 } 6630 int xPos = viewToContentX((mWebTextView.getLeft() + mWebTextView.getRight()) / 2); 6631 int yPos = viewToContentY((mWebTextView.getTop() + mWebTextView.getBottom()) / 2); 6632 int layer = nativeScrollableLayer(xPos, yPos, null, null); 6633 if (layer != 0) { 6634 nativeScrollLayer(layer, 0, viewToContentDimension(y)); 6635 } 6636 } 6637 6638 /** 6639 * Set our starting point and time for a drag from the WebTextView. 6640 */ 6641 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6642 if (!inEditingMode()) { 6643 return; 6644 } 6645 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 6646 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 6647 mLastTouchTime = eventTime; 6648 if (!mScroller.isFinished()) { 6649 abortAnimation(); 6650 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6651 } 6652 mSnapScrollMode = SNAP_NONE; 6653 mVelocityTracker = VelocityTracker.obtain(); 6654 mTouchMode = TOUCH_DRAG_START_MODE; 6655 } 6656 6657 /** 6658 * Given a motion event from the WebTextView, set its location to our 6659 * coordinates, and handle the event. 6660 */ 6661 /*package*/ boolean textFieldDrag(MotionEvent event) { 6662 if (!inEditingMode()) { 6663 return false; 6664 } 6665 mDragFromTextInput = true; 6666 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6667 (float) (mWebTextView.getTop() - mScrollY)); 6668 boolean result = onTouchEvent(event); 6669 mDragFromTextInput = false; 6670 return result; 6671 } 6672 6673 /** 6674 * Due a touch up from a WebTextView. This will be handled by webkit to 6675 * change the selection. 6676 * @param event MotionEvent in the WebTextView's coordinates. 6677 */ 6678 /*package*/ void touchUpOnTextField(MotionEvent event) { 6679 if (!inEditingMode()) { 6680 return; 6681 } 6682 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6683 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6684 nativeMotionUp(x, y, mNavSlop); 6685 } 6686 6687 /** 6688 * Called when pressing the center key or trackball on a textfield. 6689 */ 6690 /*package*/ void centerKeyPressOnTextField() { 6691 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6692 nativeCursorNodePointer()); 6693 } 6694 6695 private void doShortPress() { 6696 if (mNativeClass == 0) { 6697 return; 6698 } 6699 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6700 return; 6701 } 6702 mTouchMode = TOUCH_DONE_MODE; 6703 switchOutDrawHistory(); 6704 // mLastTouchX and mLastTouchY are the point in the current viewport 6705 int contentX = viewToContentX(mLastTouchX + mScrollX); 6706 int contentY = viewToContentY(mLastTouchY + mScrollY); 6707 if (getSettings().supportTouchOnly()) { 6708 removeTouchHighlight(false); 6709 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6710 // use "0" as generation id to inform WebKit to use the same x/y as 6711 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6712 touchUpData.mMoveGeneration = 0; 6713 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6714 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6715 WebViewCore.MotionUpData motionUpData = new WebViewCore 6716 .MotionUpData(); 6717 motionUpData.mFrame = nativeCacheHitFramePointer(); 6718 motionUpData.mNode = nativeCacheHitNodePointer(); 6719 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6720 motionUpData.mX = contentX; 6721 motionUpData.mY = contentY; 6722 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6723 motionUpData); 6724 } else { 6725 doMotionUp(contentX, contentY); 6726 } 6727 } 6728 6729 private void doMotionUp(int contentX, int contentY) { 6730 if (nativeMotionUp(contentX, contentY, mNavSlop) && mLogEvent) { 6731 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6732 } 6733 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6734 playSoundEffect(SoundEffectConstants.CLICK); 6735 } 6736 } 6737 6738 /** 6739 * Returns plugin bounds if x/y in content coordinates corresponds to a 6740 * plugin. Otherwise a NULL rectangle is returned. 6741 */ 6742 Rect getPluginBounds(int x, int y) { 6743 if (nativePointInNavCache(x, y, mNavSlop) && nativeCacheHitIsPlugin()) { 6744 return nativeCacheHitNodeBounds(); 6745 } else { 6746 return null; 6747 } 6748 } 6749 6750 /* 6751 * Return true if the rect (e.g. plugin) is fully visible and maximized 6752 * inside the WebView. 6753 */ 6754 boolean isRectFitOnScreen(Rect rect) { 6755 final int rectWidth = rect.width(); 6756 final int rectHeight = rect.height(); 6757 final int viewWidth = getViewWidth(); 6758 final int viewHeight = getViewHeightWithTitle(); 6759 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 6760 scale = mZoomManager.computeScaleWithLimits(scale); 6761 return !mZoomManager.willScaleTriggerZoom(scale) 6762 && contentToViewX(rect.left) >= mScrollX 6763 && contentToViewX(rect.right) <= mScrollX + viewWidth 6764 && contentToViewY(rect.top) >= mScrollY 6765 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 6766 } 6767 6768 /* 6769 * Maximize and center the rectangle, specified in the document coordinate 6770 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6771 * animated scroll to center it. If the zoom needs to be changed, find the 6772 * zoom center and do a smooth zoom transition. The rect is in document 6773 * coordinates 6774 */ 6775 void centerFitRect(Rect rect) { 6776 final int rectWidth = rect.width(); 6777 final int rectHeight = rect.height(); 6778 final int viewWidth = getViewWidth(); 6779 final int viewHeight = getViewHeightWithTitle(); 6780 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 6781 / rectHeight); 6782 scale = mZoomManager.computeScaleWithLimits(scale); 6783 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6784 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 6785 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 6786 true, 0); 6787 } else { 6788 float actualScale = mZoomManager.getScale(); 6789 float oldScreenX = rect.left * actualScale - mScrollX; 6790 float rectViewX = rect.left * scale; 6791 float rectViewWidth = rectWidth * scale; 6792 float newMaxWidth = mContentWidth * scale; 6793 float newScreenX = (viewWidth - rectViewWidth) / 2; 6794 // pin the newX to the WebView 6795 if (newScreenX > rectViewX) { 6796 newScreenX = rectViewX; 6797 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6798 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6799 } 6800 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6801 / (scale - actualScale); 6802 float oldScreenY = rect.top * actualScale + getTitleHeight() 6803 - mScrollY; 6804 float rectViewY = rect.top * scale + getTitleHeight(); 6805 float rectViewHeight = rectHeight * scale; 6806 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6807 float newScreenY = (viewHeight - rectViewHeight) / 2; 6808 // pin the newY to the WebView 6809 if (newScreenY > rectViewY) { 6810 newScreenY = rectViewY; 6811 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6812 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6813 } 6814 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6815 / (scale - actualScale); 6816 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6817 mZoomManager.startZoomAnimation(scale, false); 6818 } 6819 } 6820 6821 // Called by JNI to handle a touch on a node representing an email address, 6822 // address, or phone number 6823 private void overrideLoading(String url) { 6824 mCallbackProxy.uiOverrideUrlLoading(url); 6825 } 6826 6827 @Override 6828 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6829 // FIXME: If a subwindow is showing find, and the user touches the 6830 // background window, it can steal focus. 6831 if (mFindIsUp) return false; 6832 boolean result = false; 6833 if (inEditingMode()) { 6834 result = mWebTextView.requestFocus(direction, 6835 previouslyFocusedRect); 6836 } else { 6837 result = super.requestFocus(direction, previouslyFocusedRect); 6838 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6839 // For cases such as GMail, where we gain focus from a direction, 6840 // we want to move to the first available link. 6841 // FIXME: If there are no visible links, we may not want to 6842 int fakeKeyDirection = 0; 6843 switch(direction) { 6844 case View.FOCUS_UP: 6845 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6846 break; 6847 case View.FOCUS_DOWN: 6848 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6849 break; 6850 case View.FOCUS_LEFT: 6851 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6852 break; 6853 case View.FOCUS_RIGHT: 6854 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6855 break; 6856 default: 6857 return result; 6858 } 6859 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6860 navHandledKey(fakeKeyDirection, 1, true, 0); 6861 } 6862 } 6863 } 6864 return result; 6865 } 6866 6867 @Override 6868 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6869 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6870 6871 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6872 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6873 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6874 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6875 6876 int measuredHeight = heightSize; 6877 int measuredWidth = widthSize; 6878 6879 // Grab the content size from WebViewCore. 6880 int contentHeight = contentToViewDimension(mContentHeight); 6881 int contentWidth = contentToViewDimension(mContentWidth); 6882 6883// Log.d(LOGTAG, "------- measure " + heightMode); 6884 6885 if (heightMode != MeasureSpec.EXACTLY) { 6886 mHeightCanMeasure = true; 6887 measuredHeight = contentHeight; 6888 if (heightMode == MeasureSpec.AT_MOST) { 6889 // If we are larger than the AT_MOST height, then our height can 6890 // no longer be measured and we should scroll internally. 6891 if (measuredHeight > heightSize) { 6892 measuredHeight = heightSize; 6893 mHeightCanMeasure = false; 6894 } else if (measuredHeight < heightSize) { 6895 measuredHeight |= MEASURED_STATE_TOO_SMALL; 6896 } 6897 } 6898 } else { 6899 mHeightCanMeasure = false; 6900 } 6901 if (mNativeClass != 0) { 6902 nativeSetHeightCanMeasure(mHeightCanMeasure); 6903 } 6904 // For the width, always use the given size unless unspecified. 6905 if (widthMode == MeasureSpec.UNSPECIFIED) { 6906 mWidthCanMeasure = true; 6907 measuredWidth = contentWidth; 6908 } else { 6909 if (measuredWidth < contentWidth) { 6910 measuredWidth |= MEASURED_STATE_TOO_SMALL; 6911 } 6912 mWidthCanMeasure = false; 6913 } 6914 6915 synchronized (this) { 6916 setMeasuredDimension(measuredWidth, measuredHeight); 6917 } 6918 } 6919 6920 @Override 6921 public boolean requestChildRectangleOnScreen(View child, 6922 Rect rect, 6923 boolean immediate) { 6924 if (mNativeClass == 0) { 6925 return false; 6926 } 6927 // don't scroll while in zoom animation. When it is done, we will adjust 6928 // the necessary components (e.g., WebTextView if it is in editing mode) 6929 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6930 return false; 6931 } 6932 6933 rect.offset(child.getLeft() - child.getScrollX(), 6934 child.getTop() - child.getScrollY()); 6935 6936 Rect content = new Rect(viewToContentX(mScrollX), 6937 viewToContentY(mScrollY), 6938 viewToContentX(mScrollX + getWidth() 6939 - getVerticalScrollbarWidth()), 6940 viewToContentY(mScrollY + getViewHeightWithTitle())); 6941 content = nativeSubtractLayers(content); 6942 int screenTop = contentToViewY(content.top); 6943 int screenBottom = contentToViewY(content.bottom); 6944 int height = screenBottom - screenTop; 6945 int scrollYDelta = 0; 6946 6947 if (rect.bottom > screenBottom) { 6948 int oneThirdOfScreenHeight = height / 3; 6949 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6950 // If the rectangle is too tall to fit in the bottom two thirds 6951 // of the screen, place it at the top. 6952 scrollYDelta = rect.top - screenTop; 6953 } else { 6954 // If the rectangle will still fit on screen, we want its 6955 // top to be in the top third of the screen. 6956 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6957 } 6958 } else if (rect.top < screenTop) { 6959 scrollYDelta = rect.top - screenTop; 6960 } 6961 6962 int screenLeft = contentToViewX(content.left); 6963 int screenRight = contentToViewX(content.right); 6964 int width = screenRight - screenLeft; 6965 int scrollXDelta = 0; 6966 6967 if (rect.right > screenRight && rect.left > screenLeft) { 6968 if (rect.width() > width) { 6969 scrollXDelta += (rect.left - screenLeft); 6970 } else { 6971 scrollXDelta += (rect.right - screenRight); 6972 } 6973 } else if (rect.left < screenLeft) { 6974 scrollXDelta -= (screenLeft - rect.left); 6975 } 6976 6977 if ((scrollYDelta | scrollXDelta) != 0) { 6978 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6979 } 6980 6981 return false; 6982 } 6983 6984 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6985 String replace, int newStart, int newEnd) { 6986 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6987 arg.mReplace = replace; 6988 arg.mNewStart = newStart; 6989 arg.mNewEnd = newEnd; 6990 mTextGeneration++; 6991 arg.mTextGeneration = mTextGeneration; 6992 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6993 } 6994 6995 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6996 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6997 arg.mEvent = event; 6998 arg.mCurrentText = currentText; 6999 // Increase our text generation number, and pass it to webcore thread 7000 mTextGeneration++; 7001 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7002 // WebKit's document state is not saved until about to leave the page. 7003 // To make sure the host application, like Browser, has the up to date 7004 // document state when it goes to background, we force to save the 7005 // document state. 7006 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7007 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7008 cursorData(), 1000); 7009 } 7010 7011 /* package */ synchronized WebViewCore getWebViewCore() { 7012 return mWebViewCore; 7013 } 7014 7015 //------------------------------------------------------------------------- 7016 // Methods can be called from a separate thread, like WebViewCore 7017 // If it needs to call the View system, it has to send message. 7018 //------------------------------------------------------------------------- 7019 7020 /** 7021 * General handler to receive message coming from webkit thread 7022 */ 7023 class PrivateHandler extends Handler { 7024 @Override 7025 public void handleMessage(Message msg) { 7026 // exclude INVAL_RECT_MSG_ID since it is frequently output 7027 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7028 if (msg.what >= FIRST_PRIVATE_MSG_ID 7029 && msg.what <= LAST_PRIVATE_MSG_ID) { 7030 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7031 - FIRST_PRIVATE_MSG_ID]); 7032 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7033 && msg.what <= LAST_PACKAGE_MSG_ID) { 7034 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7035 - FIRST_PACKAGE_MSG_ID]); 7036 } else { 7037 Log.v(LOGTAG, Integer.toString(msg.what)); 7038 } 7039 } 7040 if (mWebViewCore == null) { 7041 // after WebView's destroy() is called, skip handling messages. 7042 return; 7043 } 7044 switch (msg.what) { 7045 case REMEMBER_PASSWORD: { 7046 mDatabase.setUsernamePassword( 7047 msg.getData().getString("host"), 7048 msg.getData().getString("username"), 7049 msg.getData().getString("password")); 7050 ((Message) msg.obj).sendToTarget(); 7051 break; 7052 } 7053 case NEVER_REMEMBER_PASSWORD: { 7054 mDatabase.setUsernamePassword( 7055 msg.getData().getString("host"), null, null); 7056 ((Message) msg.obj).sendToTarget(); 7057 break; 7058 } 7059 case PREVENT_DEFAULT_TIMEOUT: { 7060 // if timeout happens, cancel it so that it won't block UI 7061 // to continue handling touch events 7062 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7063 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7064 || (msg.arg1 == MotionEvent.ACTION_MOVE 7065 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7066 cancelWebCoreTouchEvent( 7067 viewToContentX(mLastTouchX + mScrollX), 7068 viewToContentY(mLastTouchY + mScrollY), 7069 true); 7070 } 7071 break; 7072 } 7073 case SCROLL_SELECT_TEXT: { 7074 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7075 mSentAutoScrollMessage = false; 7076 break; 7077 } 7078 if (mScrollingLayer == 0) { 7079 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7080 } else { 7081 mScrollingLayerRect.left += mAutoScrollX; 7082 mScrollingLayerRect.top += mAutoScrollY; 7083 nativeScrollLayer(mScrollingLayer, 7084 mScrollingLayerRect.left, 7085 mScrollingLayerRect.top); 7086 invalidate(); 7087 } 7088 sendEmptyMessageDelayed( 7089 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7090 break; 7091 } 7092 case SWITCH_TO_SHORTPRESS: { 7093 mInitialHitTestResult = null; // set by updateSelection() 7094 if (mTouchMode == TOUCH_INIT_MODE) { 7095 if (!getSettings().supportTouchOnly() 7096 && mPreventDefault != PREVENT_DEFAULT_YES) { 7097 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 7098 updateSelection(); 7099 } else { 7100 // set to TOUCH_SHORTPRESS_MODE so that it won't 7101 // trigger double tap any more 7102 mTouchMode = TOUCH_SHORTPRESS_MODE; 7103 } 7104 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 7105 mTouchMode = TOUCH_DONE_MODE; 7106 } 7107 break; 7108 } 7109 case SWITCH_TO_LONGPRESS: { 7110 if (getSettings().supportTouchOnly()) { 7111 removeTouchHighlight(false); 7112 } 7113 if (inFullScreenMode() || mDeferTouchProcess) { 7114 TouchEventData ted = new TouchEventData(); 7115 ted.mAction = WebViewCore.ACTION_LONGPRESS; 7116 ted.mIds = new int[1]; 7117 ted.mIds[0] = 0; 7118 ted.mPoints = new Point[1]; 7119 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 7120 viewToContentY(mLastTouchY + mScrollY)); 7121 // metaState for long press is tricky. Should it be the 7122 // state when the press started or when the press was 7123 // released? Or some intermediary key state? For 7124 // simplicity for now, we don't set it. 7125 ted.mMetaState = 0; 7126 ted.mReprocess = mDeferTouchProcess; 7127 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7128 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 7129 mTouchMode = TOUCH_DONE_MODE; 7130 performLongClick(); 7131 } 7132 break; 7133 } 7134 case RELEASE_SINGLE_TAP: { 7135 doShortPress(); 7136 break; 7137 } 7138 case SCROLL_BY_MSG_ID: 7139 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 7140 break; 7141 case SYNC_SCROLL_TO_MSG_ID: 7142 if (mUserScroll) { 7143 // if user has scrolled explicitly, don't sync the 7144 // scroll position any more 7145 mUserScroll = false; 7146 break; 7147 } 7148 setContentScrollTo(msg.arg1, msg.arg2); 7149 break; 7150 case SCROLL_TO_MSG_ID: 7151 if (setContentScrollTo(msg.arg1, msg.arg2)) { 7152 // if we can't scroll to the exact position due to pin, 7153 // send a message to WebCore to re-scroll when we get a 7154 // new picture 7155 mUserScroll = false; 7156 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 7157 msg.arg1, msg.arg2); 7158 } 7159 break; 7160 case SPAWN_SCROLL_TO_MSG_ID: 7161 spawnContentScrollTo(msg.arg1, msg.arg2); 7162 break; 7163 case UPDATE_ZOOM_RANGE: { 7164 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7165 // mScrollX contains the new minPrefWidth 7166 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7167 break; 7168 } 7169 case REPLACE_BASE_CONTENT: { 7170 nativeReplaceBaseContent(msg.arg1); 7171 break; 7172 } 7173 case NEW_PICTURE_MSG_ID: { 7174 // called for new content 7175 mUserScroll = false; 7176 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7177 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion.getBounds()); 7178 final Point viewSize = draw.mViewSize; 7179 WebViewCore.ViewState viewState = draw.mViewState; 7180 boolean isPictureAfterFirstLayout = viewState != null; 7181 if (isPictureAfterFirstLayout) { 7182 // Reset the last sent data here since dealing with new page. 7183 mLastWidthSent = 0; 7184 mZoomManager.onFirstLayout(draw); 7185 if (!mDrawHistory) { 7186 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7187 // As we are on a new page, remove the WebTextView. This 7188 // is necessary for page loads driven by webkit, and in 7189 // particular when the user was on a password field, so 7190 // the WebTextView was visible. 7191 clearTextEntry(); 7192 } 7193 } 7194 7195 // We update the layout (i.e. request a layout from the 7196 // view system) if the last view size that we sent to 7197 // WebCore matches the view size of the picture we just 7198 // received in the fixed dimension. 7199 final boolean updateLayout = viewSize.x == mLastWidthSent 7200 && viewSize.y == mLastHeightSent; 7201 recordNewContentSize(draw.mContentSize.x, 7202 draw.mContentSize.y, updateLayout); 7203 if (DebugFlags.WEB_VIEW) { 7204 Rect b = draw.mInvalRegion.getBounds(); 7205 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 7206 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 7207 } 7208 invalidateContentRect(draw.mInvalRegion.getBounds()); 7209 7210 if (mPictureListener != null) { 7211 mPictureListener.onNewPicture(WebView.this, capturePicture()); 7212 } 7213 7214 // update the zoom information based on the new picture 7215 mZoomManager.onNewPicture(draw); 7216 7217 if (draw.mFocusSizeChanged && inEditingMode()) { 7218 mFocusSizeChanged = true; 7219 } 7220 if (isPictureAfterFirstLayout) { 7221 mViewManager.postReadyToDrawAll(); 7222 } 7223 break; 7224 } 7225 case WEBCORE_INITIALIZED_MSG_ID: 7226 // nativeCreate sets mNativeClass to a non-zero value 7227 nativeCreate(msg.arg1); 7228 break; 7229 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7230 // Make sure that the textfield is currently focused 7231 // and representing the same node as the pointer. 7232 if (inEditingMode() && 7233 mWebTextView.isSameTextField(msg.arg1)) { 7234 if (msg.getData().getBoolean("password")) { 7235 Spannable text = (Spannable) mWebTextView.getText(); 7236 int start = Selection.getSelectionStart(text); 7237 int end = Selection.getSelectionEnd(text); 7238 mWebTextView.setInPassword(true); 7239 // Restore the selection, which may have been 7240 // ruined by setInPassword. 7241 Spannable pword = 7242 (Spannable) mWebTextView.getText(); 7243 Selection.setSelection(pword, start, end); 7244 // If the text entry has created more events, ignore 7245 // this one. 7246 } else if (msg.arg2 == mTextGeneration) { 7247 String text = (String) msg.obj; 7248 if (null == text) { 7249 text = ""; 7250 } 7251 mWebTextView.setTextAndKeepSelection(text); 7252 } 7253 } 7254 break; 7255 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 7256 displaySoftKeyboard(true); 7257 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 7258 case UPDATE_TEXT_SELECTION_MSG_ID: 7259 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7260 (WebViewCore.TextSelectionData) msg.obj); 7261 break; 7262 case FORM_DID_BLUR: 7263 if (inEditingMode() 7264 && mWebTextView.isSameTextField(msg.arg1)) { 7265 hideSoftKeyboard(); 7266 } 7267 break; 7268 case RETURN_LABEL: 7269 if (inEditingMode() 7270 && mWebTextView.isSameTextField(msg.arg1)) { 7271 mWebTextView.setHint((String) msg.obj); 7272 InputMethodManager imm 7273 = InputMethodManager.peekInstance(); 7274 // The hint is propagated to the IME in 7275 // onCreateInputConnection. If the IME is already 7276 // active, restart it so that its hint text is updated. 7277 if (imm != null && imm.isActive(mWebTextView)) { 7278 imm.restartInput(mWebTextView); 7279 } 7280 } 7281 break; 7282 case UNHANDLED_NAV_KEY: 7283 navHandledKey(msg.arg1, 1, false, 0); 7284 break; 7285 case UPDATE_TEXT_ENTRY_MSG_ID: 7286 // this is sent after finishing resize in WebViewCore. Make 7287 // sure the text edit box is still on the screen. 7288 if (inEditingMode() && nativeCursorIsTextInput()) { 7289 rebuildWebTextView(); 7290 } 7291 break; 7292 case CLEAR_TEXT_ENTRY: 7293 clearTextEntry(); 7294 break; 7295 case INVAL_RECT_MSG_ID: { 7296 Rect r = (Rect)msg.obj; 7297 if (r == null) { 7298 invalidate(); 7299 } else { 7300 // we need to scale r from content into view coords, 7301 // which viewInvalidate() does for us 7302 viewInvalidate(r.left, r.top, r.right, r.bottom); 7303 } 7304 break; 7305 } 7306 case REQUEST_FORM_DATA: 7307 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7308 if (mWebTextView.isSameTextField(msg.arg1)) { 7309 mWebTextView.setAdapterCustom(adapter); 7310 } 7311 break; 7312 case RESUME_WEBCORE_PRIORITY: 7313 WebViewCore.resumePriority(); 7314 WebViewCore.resumeUpdatePicture(mWebViewCore); 7315 break; 7316 7317 case LONG_PRESS_CENTER: 7318 // as this is shared by keydown and trackballdown, reset all 7319 // the states 7320 mGotCenterDown = false; 7321 mTrackballDown = false; 7322 performLongClick(); 7323 break; 7324 7325 case WEBCORE_NEED_TOUCH_EVENTS: 7326 mForwardTouchEvents = (msg.arg1 != 0); 7327 break; 7328 7329 case PREVENT_TOUCH_ID: 7330 if (inFullScreenMode()) { 7331 break; 7332 } 7333 if (msg.obj == null) { 7334 if (msg.arg1 == MotionEvent.ACTION_DOWN 7335 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7336 // if prevent default is called from WebCore, UI 7337 // will not handle the rest of the touch events any 7338 // more. 7339 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7340 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7341 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7342 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7343 // the return for the first ACTION_MOVE will decide 7344 // whether UI will handle touch or not. Currently no 7345 // support for alternating prevent default 7346 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7347 : PREVENT_DEFAULT_NO; 7348 } 7349 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7350 mTouchHighlightRegion.setEmpty(); 7351 } 7352 } else { 7353 TouchEventData ted = (TouchEventData) msg.obj; 7354 7355 if (ted.mPoints.length > 1) { // multi-touch 7356 if (ted.mAction == MotionEvent.ACTION_POINTER_UP) { 7357 mIsHandlingMultiTouch = false; 7358 } 7359 if (msg.arg2 == 0) { 7360 mPreventDefault = PREVENT_DEFAULT_NO; 7361 handleMultiTouchInWebView(ted.mMotionEvent); 7362 } else { 7363 mPreventDefault = PREVENT_DEFAULT_YES; 7364 } 7365 break; 7366 } 7367 7368 // prevent default is not called in WebCore, so the 7369 // message needs to be reprocessed in UI 7370 if (msg.arg2 == 0) { 7371 // Following is for single touch. 7372 switch (ted.mAction) { 7373 case MotionEvent.ACTION_DOWN: 7374 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 7375 - mScrollX; 7376 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 7377 - mScrollY; 7378 mDeferTouchMode = TOUCH_INIT_MODE; 7379 break; 7380 case MotionEvent.ACTION_MOVE: { 7381 // no snapping in defer process 7382 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 7383 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 7384 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7385 mDeferTouchMode = TOUCH_DRAG_MODE; 7386 mLastDeferTouchX = x; 7387 mLastDeferTouchY = y; 7388 startScrollingLayer(x, y); 7389 startDrag(); 7390 } 7391 int deltaX = pinLocX((int) (mScrollX 7392 + mLastDeferTouchX - x)) 7393 - mScrollX; 7394 int deltaY = pinLocY((int) (mScrollY 7395 + mLastDeferTouchY - y)) 7396 - mScrollY; 7397 doDrag(deltaX, deltaY); 7398 if (deltaX != 0) mLastDeferTouchX = x; 7399 if (deltaY != 0) mLastDeferTouchY = y; 7400 break; 7401 } 7402 case MotionEvent.ACTION_UP: 7403 case MotionEvent.ACTION_CANCEL: 7404 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7405 // no fling in defer process 7406 mScroller.springBack(mScrollX, mScrollY, 0, 7407 computeMaxScrollX(), 0, 7408 computeMaxScrollY()); 7409 invalidate(); 7410 WebViewCore.resumePriority(); 7411 WebViewCore.resumeUpdatePicture(mWebViewCore); 7412 } 7413 mDeferTouchMode = TOUCH_DONE_MODE; 7414 break; 7415 case WebViewCore.ACTION_DOUBLETAP: 7416 // doDoubleTap() needs mLastTouchX/Y as anchor 7417 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 7418 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 7419 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7420 mDeferTouchMode = TOUCH_DONE_MODE; 7421 break; 7422 case WebViewCore.ACTION_LONGPRESS: 7423 HitTestResult hitTest = getHitTestResult(); 7424 if (hitTest != null && hitTest.mType 7425 != HitTestResult.UNKNOWN_TYPE) { 7426 performLongClick(); 7427 } 7428 mDeferTouchMode = TOUCH_DONE_MODE; 7429 break; 7430 } 7431 } 7432 } 7433 break; 7434 7435 case REQUEST_KEYBOARD: 7436 if (msg.arg1 == 0) { 7437 hideSoftKeyboard(); 7438 } else { 7439 displaySoftKeyboard(false); 7440 } 7441 break; 7442 7443 case FIND_AGAIN: 7444 // Ignore if find has been dismissed. 7445 if (mFindIsUp && mFindCallback != null) { 7446 mFindCallback.findAll(); 7447 } 7448 break; 7449 7450 case DRAG_HELD_MOTIONLESS: 7451 mHeldMotionless = MOTIONLESS_TRUE; 7452 invalidate(); 7453 // fall through to keep scrollbars awake 7454 7455 case AWAKEN_SCROLL_BARS: 7456 if (mTouchMode == TOUCH_DRAG_MODE 7457 && mHeldMotionless == MOTIONLESS_TRUE) { 7458 awakenScrollBars(ViewConfiguration 7459 .getScrollDefaultDelay(), false); 7460 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7461 .obtainMessage(AWAKEN_SCROLL_BARS), 7462 ViewConfiguration.getScrollDefaultDelay()); 7463 } 7464 break; 7465 7466 case DO_MOTION_UP: 7467 doMotionUp(msg.arg1, msg.arg2); 7468 break; 7469 7470 case SCREEN_ON: 7471 setKeepScreenOn(msg.arg1 == 1); 7472 break; 7473 7474 case SHOW_FULLSCREEN: { 7475 View view = (View) msg.obj; 7476 int npp = msg.arg1; 7477 7478 if (inFullScreenMode()) { 7479 Log.w(LOGTAG, "Should not have another full screen."); 7480 dismissFullScreenMode(); 7481 } 7482 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7483 mFullScreenHolder.setContentView(view); 7484 mFullScreenHolder.setCancelable(false); 7485 mFullScreenHolder.setCanceledOnTouchOutside(false); 7486 mFullScreenHolder.show(); 7487 7488 break; 7489 } 7490 case HIDE_FULLSCREEN: 7491 dismissFullScreenMode(); 7492 break; 7493 7494 case DOM_FOCUS_CHANGED: 7495 if (inEditingMode()) { 7496 nativeClearCursor(); 7497 rebuildWebTextView(); 7498 } 7499 break; 7500 7501 case SHOW_RECT_MSG_ID: { 7502 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7503 int x = mScrollX; 7504 int left = contentToViewX(data.mLeft); 7505 int width = contentToViewDimension(data.mWidth); 7506 int maxWidth = contentToViewDimension(data.mContentWidth); 7507 int viewWidth = getViewWidth(); 7508 if (width < viewWidth) { 7509 // center align 7510 x += left + width / 2 - mScrollX - viewWidth / 2; 7511 } else { 7512 x += (int) (left + data.mXPercentInDoc * width 7513 - mScrollX - data.mXPercentInView * viewWidth); 7514 } 7515 if (DebugFlags.WEB_VIEW) { 7516 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7517 width + ",maxWidth=" + maxWidth + 7518 ",viewWidth=" + viewWidth + ",x=" 7519 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7520 ",xPercentInView=" + data.mXPercentInView+ ")"); 7521 } 7522 // use the passing content width to cap x as the current 7523 // mContentWidth may not be updated yet 7524 x = Math.max(0, 7525 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7526 int top = contentToViewY(data.mTop); 7527 int height = contentToViewDimension(data.mHeight); 7528 int maxHeight = contentToViewDimension(data.mContentHeight); 7529 int viewHeight = getViewHeight(); 7530 int y = (int) (top + data.mYPercentInDoc * height - 7531 data.mYPercentInView * viewHeight); 7532 if (DebugFlags.WEB_VIEW) { 7533 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7534 height + ",maxHeight=" + maxHeight + 7535 ",viewHeight=" + viewHeight + ",y=" 7536 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7537 ",yPercentInView=" + data.mYPercentInView+ ")"); 7538 } 7539 // use the passing content height to cap y as the current 7540 // mContentHeight may not be updated yet 7541 y = Math.max(0, 7542 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7543 // We need to take into account the visible title height 7544 // when scrolling since y is an absolute view position. 7545 y = Math.max(0, y - getVisibleTitleHeight()); 7546 scrollTo(x, y); 7547 } 7548 break; 7549 7550 case CENTER_FIT_RECT: 7551 centerFitRect((Rect)msg.obj); 7552 break; 7553 7554 case SET_SCROLLBAR_MODES: 7555 mHorizontalScrollBarMode = msg.arg1; 7556 mVerticalScrollBarMode = msg.arg2; 7557 break; 7558 7559 case SELECTION_STRING_CHANGED: 7560 if (mAccessibilityInjector != null) { 7561 String selectionString = (String) msg.obj; 7562 mAccessibilityInjector.onSelectionStringChange(selectionString); 7563 } 7564 break; 7565 7566 case SET_TOUCH_HIGHLIGHT_RECTS: 7567 invalidate(mTouchHighlightRegion.getBounds()); 7568 mTouchHighlightRegion.setEmpty(); 7569 if (msg.obj != null) { 7570 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7571 for (Rect rect : rects) { 7572 Rect viewRect = contentToViewRect(rect); 7573 // some sites, like stories in nytimes.com, set 7574 // mouse event handler in the top div. It is not 7575 // user friendly to highlight the div if it covers 7576 // more than half of the screen. 7577 if (viewRect.width() < getWidth() >> 1 7578 || viewRect.height() < getHeight() >> 1) { 7579 mTouchHighlightRegion.union(viewRect); 7580 invalidate(viewRect); 7581 } else { 7582 Log.w(LOGTAG, "Skip the huge selection rect:" 7583 + viewRect); 7584 } 7585 } 7586 } 7587 break; 7588 7589 case SAVE_WEBARCHIVE_FINISHED: 7590 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7591 if (saveMessage.mCallback != null) { 7592 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7593 } 7594 break; 7595 7596 case SET_AUTOFILLABLE: 7597 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7598 if (mWebTextView != null) { 7599 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7600 rebuildWebTextView(); 7601 } 7602 break; 7603 7604 case AUTOFILL_COMPLETE: 7605 if (mWebTextView != null) { 7606 // Clear the WebTextView adapter when AutoFill finishes 7607 // so that the drop down gets cleared. 7608 mWebTextView.setAdapterCustom(null); 7609 } 7610 break; 7611 7612 case SELECT_AT: 7613 nativeSelectAt(msg.arg1, msg.arg2); 7614 break; 7615 7616 default: 7617 super.handleMessage(msg); 7618 break; 7619 } 7620 } 7621 } 7622 7623 /** 7624 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7625 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7626 */ 7627 private void updateTextSelectionFromMessage(int nodePointer, 7628 int textGeneration, WebViewCore.TextSelectionData data) { 7629 if (inEditingMode() 7630 && mWebTextView.isSameTextField(nodePointer) 7631 && textGeneration == mTextGeneration) { 7632 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7633 } 7634 } 7635 7636 // Class used to use a dropdown for a <select> element 7637 private class InvokeListBox implements Runnable { 7638 // Whether the listbox allows multiple selection. 7639 private boolean mMultiple; 7640 // Passed in to a list with multiple selection to tell 7641 // which items are selected. 7642 private int[] mSelectedArray; 7643 // Passed in to a list with single selection to tell 7644 // where the initial selection is. 7645 private int mSelection; 7646 7647 private Container[] mContainers; 7648 7649 // Need these to provide stable ids to my ArrayAdapter, 7650 // which normally does not have stable ids. (Bug 1250098) 7651 private class Container extends Object { 7652 /** 7653 * Possible values for mEnabled. Keep in sync with OptionStatus in 7654 * WebViewCore.cpp 7655 */ 7656 final static int OPTGROUP = -1; 7657 final static int OPTION_DISABLED = 0; 7658 final static int OPTION_ENABLED = 1; 7659 7660 String mString; 7661 int mEnabled; 7662 int mId; 7663 7664 public String toString() { 7665 return mString; 7666 } 7667 } 7668 7669 /** 7670 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7671 * and allow filtering. 7672 */ 7673 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7674 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7675 super(context, 7676 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7677 com.android.internal.R.layout.select_dialog_singlechoice, 7678 objects); 7679 } 7680 7681 @Override 7682 public View getView(int position, View convertView, 7683 ViewGroup parent) { 7684 // Always pass in null so that we will get a new CheckedTextView 7685 // Otherwise, an item which was previously used as an <optgroup> 7686 // element (i.e. has no check), could get used as an <option> 7687 // element, which needs a checkbox/radio, but it would not have 7688 // one. 7689 convertView = super.getView(position, null, parent); 7690 Container c = item(position); 7691 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7692 // ListView does not draw dividers between disabled and 7693 // enabled elements. Use a LinearLayout to provide dividers 7694 LinearLayout layout = new LinearLayout(mContext); 7695 layout.setOrientation(LinearLayout.VERTICAL); 7696 if (position > 0) { 7697 View dividerTop = new View(mContext); 7698 dividerTop.setBackgroundResource( 7699 android.R.drawable.divider_horizontal_bright); 7700 layout.addView(dividerTop); 7701 } 7702 7703 if (Container.OPTGROUP == c.mEnabled) { 7704 // Currently select_dialog_multichoice and 7705 // select_dialog_singlechoice are CheckedTextViews. If 7706 // that changes, the class cast will no longer be valid. 7707 Assert.assertTrue( 7708 convertView instanceof CheckedTextView); 7709 ((CheckedTextView) convertView).setCheckMarkDrawable( 7710 null); 7711 } else { 7712 // c.mEnabled == Container.OPTION_DISABLED 7713 // Draw the disabled element in a disabled state. 7714 convertView.setEnabled(false); 7715 } 7716 7717 layout.addView(convertView); 7718 if (position < getCount() - 1) { 7719 View dividerBottom = new View(mContext); 7720 dividerBottom.setBackgroundResource( 7721 android.R.drawable.divider_horizontal_bright); 7722 layout.addView(dividerBottom); 7723 } 7724 return layout; 7725 } 7726 return convertView; 7727 } 7728 7729 @Override 7730 public boolean hasStableIds() { 7731 // AdapterView's onChanged method uses this to determine whether 7732 // to restore the old state. Return false so that the old (out 7733 // of date) state does not replace the new, valid state. 7734 return false; 7735 } 7736 7737 private Container item(int position) { 7738 if (position < 0 || position >= getCount()) { 7739 return null; 7740 } 7741 return (Container) getItem(position); 7742 } 7743 7744 @Override 7745 public long getItemId(int position) { 7746 Container item = item(position); 7747 if (item == null) { 7748 return -1; 7749 } 7750 return item.mId; 7751 } 7752 7753 @Override 7754 public boolean areAllItemsEnabled() { 7755 return false; 7756 } 7757 7758 @Override 7759 public boolean isEnabled(int position) { 7760 Container item = item(position); 7761 if (item == null) { 7762 return false; 7763 } 7764 return Container.OPTION_ENABLED == item.mEnabled; 7765 } 7766 } 7767 7768 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7769 mMultiple = true; 7770 mSelectedArray = selected; 7771 7772 int length = array.length; 7773 mContainers = new Container[length]; 7774 for (int i = 0; i < length; i++) { 7775 mContainers[i] = new Container(); 7776 mContainers[i].mString = array[i]; 7777 mContainers[i].mEnabled = enabled[i]; 7778 mContainers[i].mId = i; 7779 } 7780 } 7781 7782 private InvokeListBox(String[] array, int[] enabled, int selection) { 7783 mSelection = selection; 7784 mMultiple = false; 7785 7786 int length = array.length; 7787 mContainers = new Container[length]; 7788 for (int i = 0; i < length; i++) { 7789 mContainers[i] = new Container(); 7790 mContainers[i].mString = array[i]; 7791 mContainers[i].mEnabled = enabled[i]; 7792 mContainers[i].mId = i; 7793 } 7794 } 7795 7796 /* 7797 * Whenever the data set changes due to filtering, this class ensures 7798 * that the checked item remains checked. 7799 */ 7800 private class SingleDataSetObserver extends DataSetObserver { 7801 private long mCheckedId; 7802 private ListView mListView; 7803 private Adapter mAdapter; 7804 7805 /* 7806 * Create a new observer. 7807 * @param id The ID of the item to keep checked. 7808 * @param l ListView for getting and clearing the checked states 7809 * @param a Adapter for getting the IDs 7810 */ 7811 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7812 mCheckedId = id; 7813 mListView = l; 7814 mAdapter = a; 7815 } 7816 7817 public void onChanged() { 7818 // The filter may have changed which item is checked. Find the 7819 // item that the ListView thinks is checked. 7820 int position = mListView.getCheckedItemPosition(); 7821 long id = mAdapter.getItemId(position); 7822 if (mCheckedId != id) { 7823 // Clear the ListView's idea of the checked item, since 7824 // it is incorrect 7825 mListView.clearChoices(); 7826 // Search for mCheckedId. If it is in the filtered list, 7827 // mark it as checked 7828 int count = mAdapter.getCount(); 7829 for (int i = 0; i < count; i++) { 7830 if (mAdapter.getItemId(i) == mCheckedId) { 7831 mListView.setItemChecked(i, true); 7832 break; 7833 } 7834 } 7835 } 7836 } 7837 7838 public void onInvalidate() {} 7839 } 7840 7841 public void run() { 7842 final ListView listView = (ListView) LayoutInflater.from(mContext) 7843 .inflate(com.android.internal.R.layout.select_dialog, null); 7844 final MyArrayListAdapter adapter = new 7845 MyArrayListAdapter(mContext, mContainers, mMultiple); 7846 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7847 .setView(listView).setCancelable(true) 7848 .setInverseBackgroundForced(true); 7849 7850 if (mMultiple) { 7851 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7852 public void onClick(DialogInterface dialog, int which) { 7853 mWebViewCore.sendMessage( 7854 EventHub.LISTBOX_CHOICES, 7855 adapter.getCount(), 0, 7856 listView.getCheckedItemPositions()); 7857 }}); 7858 b.setNegativeButton(android.R.string.cancel, 7859 new DialogInterface.OnClickListener() { 7860 public void onClick(DialogInterface dialog, int which) { 7861 mWebViewCore.sendMessage( 7862 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7863 }}); 7864 } 7865 mListBoxDialog = b.create(); 7866 listView.setAdapter(adapter); 7867 listView.setFocusableInTouchMode(true); 7868 // There is a bug (1250103) where the checks in a ListView with 7869 // multiple items selected are associated with the positions, not 7870 // the ids, so the items do not properly retain their checks when 7871 // filtered. Do not allow filtering on multiple lists until 7872 // that bug is fixed. 7873 7874 listView.setTextFilterEnabled(!mMultiple); 7875 if (mMultiple) { 7876 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7877 int length = mSelectedArray.length; 7878 for (int i = 0; i < length; i++) { 7879 listView.setItemChecked(mSelectedArray[i], true); 7880 } 7881 } else { 7882 listView.setOnItemClickListener(new OnItemClickListener() { 7883 public void onItemClick(AdapterView parent, View v, 7884 int position, long id) { 7885 // Rather than sending the message right away, send it 7886 // after the page regains focus. 7887 mListBoxMessage = Message.obtain(null, 7888 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 7889 mListBoxDialog.dismiss(); 7890 mListBoxDialog = null; 7891 } 7892 }); 7893 if (mSelection != -1) { 7894 listView.setSelection(mSelection); 7895 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7896 listView.setItemChecked(mSelection, true); 7897 DataSetObserver observer = new SingleDataSetObserver( 7898 adapter.getItemId(mSelection), listView, adapter); 7899 adapter.registerDataSetObserver(observer); 7900 } 7901 } 7902 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7903 public void onCancel(DialogInterface dialog) { 7904 mWebViewCore.sendMessage( 7905 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7906 mListBoxDialog = null; 7907 } 7908 }); 7909 mListBoxDialog.show(); 7910 } 7911 } 7912 7913 private Message mListBoxMessage; 7914 7915 /* 7916 * Request a dropdown menu for a listbox with multiple selection. 7917 * 7918 * @param array Labels for the listbox. 7919 * @param enabledArray State for each element in the list. See static 7920 * integers in Container class. 7921 * @param selectedArray Which positions are initally selected. 7922 */ 7923 void requestListBox(String[] array, int[] enabledArray, int[] 7924 selectedArray) { 7925 mPrivateHandler.post( 7926 new InvokeListBox(array, enabledArray, selectedArray)); 7927 } 7928 7929 /* 7930 * Request a dropdown menu for a listbox with single selection or a single 7931 * <select> element. 7932 * 7933 * @param array Labels for the listbox. 7934 * @param enabledArray State for each element in the list. See static 7935 * integers in Container class. 7936 * @param selection Which position is initally selected. 7937 */ 7938 void requestListBox(String[] array, int[] enabledArray, int selection) { 7939 mPrivateHandler.post( 7940 new InvokeListBox(array, enabledArray, selection)); 7941 } 7942 7943 // called by JNI 7944 private void sendMoveFocus(int frame, int node) { 7945 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7946 new WebViewCore.CursorData(frame, node, 0, 0)); 7947 } 7948 7949 // called by JNI 7950 private void sendMoveMouse(int frame, int node, int x, int y) { 7951 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7952 new WebViewCore.CursorData(frame, node, x, y)); 7953 } 7954 7955 /* 7956 * Send a mouse move event to the webcore thread. 7957 * 7958 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7959 * which wants key events, but it is not the focus. This 7960 * will make the visual appear as though nothing is in 7961 * focus. Remove the WebTextView, if present, and stop 7962 * drawing the blinking caret. 7963 * called by JNI 7964 */ 7965 private void sendMoveMouseIfLatest(boolean removeFocus) { 7966 if (removeFocus) { 7967 clearTextEntry(); 7968 } 7969 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7970 cursorData()); 7971 } 7972 7973 /** 7974 * Called by JNI to send a message to the webcore thread that the user 7975 * touched the webpage. 7976 * @param touchGeneration Generation number of the touch, to ignore touches 7977 * after a new one has been generated. 7978 * @param frame Pointer to the frame holding the node that was touched. 7979 * @param node Pointer to the node touched. 7980 * @param x x-position of the touch. 7981 * @param y y-position of the touch. 7982 * @param scrollY Only used when touching on a textarea. Otherwise, use -1. 7983 * Tells how much the textarea is scrolled. 7984 */ 7985 private void sendMotionUp(int touchGeneration, 7986 int frame, int node, int x, int y, int scrollY) { 7987 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7988 touchUpData.mMoveGeneration = touchGeneration; 7989 touchUpData.mFrame = frame; 7990 touchUpData.mNode = node; 7991 touchUpData.mX = x; 7992 touchUpData.mY = y; 7993 touchUpData.mScrollY = scrollY; 7994 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7995 } 7996 7997 7998 private int getScaledMaxXScroll() { 7999 int width; 8000 if (mHeightCanMeasure == false) { 8001 width = getViewWidth() / 4; 8002 } else { 8003 Rect visRect = new Rect(); 8004 calcOurVisibleRect(visRect); 8005 width = visRect.width() / 2; 8006 } 8007 // FIXME the divisor should be retrieved from somewhere 8008 return viewToContentX(width); 8009 } 8010 8011 private int getScaledMaxYScroll() { 8012 int height; 8013 if (mHeightCanMeasure == false) { 8014 height = getViewHeight() / 4; 8015 } else { 8016 Rect visRect = new Rect(); 8017 calcOurVisibleRect(visRect); 8018 height = visRect.height() / 2; 8019 } 8020 // FIXME the divisor should be retrieved from somewhere 8021 // the closest thing today is hard-coded into ScrollView.java 8022 // (from ScrollView.java, line 363) int maxJump = height/2; 8023 return Math.round(height * mZoomManager.getInvScale()); 8024 } 8025 8026 /** 8027 * Called by JNI to invalidate view 8028 */ 8029 private void viewInvalidate() { 8030 invalidate(); 8031 } 8032 8033 /** 8034 * Pass the key directly to the page. This assumes that 8035 * nativePageShouldHandleShiftAndArrows() returned true. 8036 */ 8037 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8038 int keyEventAction; 8039 int eventHubAction; 8040 if (down) { 8041 keyEventAction = KeyEvent.ACTION_DOWN; 8042 eventHubAction = EventHub.KEY_DOWN; 8043 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8044 } else { 8045 keyEventAction = KeyEvent.ACTION_UP; 8046 eventHubAction = EventHub.KEY_UP; 8047 } 8048 8049 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8050 1, (metaState & KeyEvent.META_SHIFT_ON) 8051 | (metaState & KeyEvent.META_ALT_ON) 8052 | (metaState & KeyEvent.META_SYM_ON) 8053 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8054 mWebViewCore.sendMessage(eventHubAction, event); 8055 } 8056 8057 // return true if the key was handled 8058 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8059 long time) { 8060 if (mNativeClass == 0) { 8061 return false; 8062 } 8063 mInitialHitTestResult = null; 8064 mLastCursorTime = time; 8065 mLastCursorBounds = nativeGetCursorRingBounds(); 8066 boolean keyHandled 8067 = nativeMoveCursor(keyCode, count, noScroll) == false; 8068 if (DebugFlags.WEB_VIEW) { 8069 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8070 + " mLastCursorTime=" + mLastCursorTime 8071 + " handled=" + keyHandled); 8072 } 8073 if (keyHandled == false) { 8074 return keyHandled; 8075 } 8076 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8077 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8078 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8079 // set last touch so that context menu related functions will work 8080 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8081 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8082 if (mHeightCanMeasure == false) { 8083 return keyHandled; 8084 } 8085 Rect visRect = new Rect(); 8086 calcOurVisibleRect(visRect); 8087 Rect outset = new Rect(visRect); 8088 int maxXScroll = visRect.width() / 2; 8089 int maxYScroll = visRect.height() / 2; 8090 outset.inset(-maxXScroll, -maxYScroll); 8091 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8092 return keyHandled; 8093 } 8094 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8095 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8096 maxXScroll); 8097 if (maxH > 0) { 8098 pinScrollBy(maxH, 0, true, 0); 8099 } else { 8100 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8101 -maxXScroll); 8102 if (maxH < 0) { 8103 pinScrollBy(maxH, 0, true, 0); 8104 } 8105 } 8106 if (mLastCursorBounds.isEmpty()) return keyHandled; 8107 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8108 return keyHandled; 8109 } 8110 if (DebugFlags.WEB_VIEW) { 8111 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8112 + contentCursorRingBounds); 8113 } 8114 requestRectangleOnScreen(viewCursorRingBounds); 8115 mUserScroll = true; 8116 return keyHandled; 8117 } 8118 8119 /** 8120 * @return Whether accessibility script has been injected. 8121 */ 8122 private boolean accessibilityScriptInjected() { 8123 // TODO: Maybe the injected script should announce its presence in 8124 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8125 // will check that as one of the conditions it looks for 8126 return mAccessibilityScriptInjected; 8127 } 8128 8129 /** 8130 * Set the background color. It's white by default. Pass 8131 * zero to make the view transparent. 8132 * @param color the ARGB color described by Color.java 8133 */ 8134 public void setBackgroundColor(int color) { 8135 mBackgroundColor = color; 8136 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8137 } 8138 8139 public void debugDump() { 8140 nativeDebugDump(); 8141 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 8142 } 8143 8144 /** 8145 * Draw the HTML page into the specified canvas. This call ignores any 8146 * view-specific zoom, scroll offset, or other changes. It does not draw 8147 * any view-specific chrome, such as progress or URL bars. 8148 * 8149 * @hide only needs to be accessible to Browser and testing 8150 */ 8151 public void drawPage(Canvas canvas) { 8152 nativeDraw(canvas, 0, 0, false); 8153 } 8154 8155 /** 8156 * Set the time to wait between passing touches to WebCore. See also the 8157 * TOUCH_SENT_INTERVAL member for further discussion. 8158 * 8159 * @hide This is only used by the DRT test application. 8160 */ 8161 public void setTouchInterval(int interval) { 8162 mCurrentTouchInterval = interval; 8163 } 8164 8165 /** 8166 * Update our cache with updatedText. 8167 * @param updatedText The new text to put in our cache. 8168 */ 8169 /* package */ void updateCachedTextfield(String updatedText) { 8170 // Also place our generation number so that when we look at the cache 8171 // we recognize that it is up to date. 8172 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 8173 } 8174 8175 /*package*/ void autoFillForm(int autoFillQueryId) { 8176 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 8177 } 8178 8179 /* package */ ViewManager getViewManager() { 8180 return mViewManager; 8181 } 8182 8183 private native int nativeCacheHitFramePointer(); 8184 private native boolean nativeCacheHitIsPlugin(); 8185 private native Rect nativeCacheHitNodeBounds(); 8186 private native int nativeCacheHitNodePointer(); 8187 /* package */ native void nativeClearCursor(); 8188 private native void nativeCreate(int ptr); 8189 private native int nativeCursorFramePointer(); 8190 private native Rect nativeCursorNodeBounds(); 8191 private native int nativeCursorNodePointer(); 8192 private native boolean nativeCursorIntersects(Rect visibleRect); 8193 private native boolean nativeCursorIsAnchor(); 8194 private native boolean nativeCursorIsTextInput(); 8195 private native Point nativeCursorPosition(); 8196 private native String nativeCursorText(); 8197 /** 8198 * Returns true if the native cursor node says it wants to handle key events 8199 * (ala plugins). This can only be called if mNativeClass is non-zero! 8200 */ 8201 private native boolean nativeCursorWantsKeyEvents(); 8202 private native void nativeDebugDump(); 8203 private native void nativeDestroy(); 8204 8205 /** 8206 * Draw the picture set with a background color and extra. If 8207 * "splitIfNeeded" is true and the return value is not 0, the return value 8208 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 8209 * native allocation can be freed. 8210 */ 8211 private native int nativeDraw(Canvas canvas, int color, int extra, 8212 boolean splitIfNeeded); 8213 private native void nativeDumpDisplayTree(String urlOrNull); 8214 private native boolean nativeEvaluateLayersAnimations(); 8215 private native int nativeGetDrawGLFunction(Rect rect, float scale, int extras); 8216 private native void nativeUpdateDrawGLFunction(Rect rect); 8217 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 8218 private native void nativeExtendSelection(int x, int y); 8219 private native int nativeFindAll(String findLower, String findUpper, 8220 boolean sameAsLastSearch); 8221 private native void nativeFindNext(boolean forward); 8222 /* package */ native int nativeFocusCandidateFramePointer(); 8223 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8224 /* package */ native boolean nativeFocusCandidateIsPassword(); 8225 private native boolean nativeFocusCandidateIsRtlText(); 8226 private native boolean nativeFocusCandidateIsTextInput(); 8227 /* package */ native int nativeFocusCandidateMaxLength(); 8228 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 8229 /* package */ native String nativeFocusCandidateName(); 8230 private native Rect nativeFocusCandidateNodeBounds(); 8231 /** 8232 * @return A Rect with left, top, right, bottom set to the corresponding 8233 * padding values in the focus candidate, if it is a textfield/textarea with 8234 * a style. Otherwise return null. This is not actually a rectangle; Rect 8235 * is being used to pass four integers. 8236 */ 8237 private native Rect nativeFocusCandidatePaddingRect(); 8238 /* package */ native int nativeFocusCandidatePointer(); 8239 private native String nativeFocusCandidateText(); 8240 /* package */ native float nativeFocusCandidateTextSize(); 8241 /* package */ native int nativeFocusCandidateLineHeight(); 8242 /** 8243 * Returns an integer corresponding to WebView.cpp::type. 8244 * See WebTextView.setType() 8245 */ 8246 private native int nativeFocusCandidateType(); 8247 private native boolean nativeFocusIsPlugin(); 8248 private native Rect nativeFocusNodeBounds(); 8249 /* package */ native int nativeFocusNodePointer(); 8250 private native Rect nativeGetCursorRingBounds(); 8251 private native String nativeGetSelection(); 8252 private native boolean nativeHasCursorNode(); 8253 private native boolean nativeHasFocusNode(); 8254 private native void nativeHideCursor(); 8255 private native boolean nativeHitSelection(int x, int y); 8256 private native String nativeImageURI(int x, int y); 8257 private native void nativeInstrumentReport(); 8258 private native Rect nativeLayerBounds(int layer); 8259 /* package */ native boolean nativeMoveCursorToNextTextInput(); 8260 // return true if the page has been scrolled 8261 private native boolean nativeMotionUp(int x, int y, int slop); 8262 // returns false if it handled the key 8263 private native boolean nativeMoveCursor(int keyCode, int count, 8264 boolean noScroll); 8265 private native int nativeMoveGeneration(); 8266 private native void nativeMoveSelection(int x, int y); 8267 /** 8268 * @return true if the page should get the shift and arrow keys, rather 8269 * than select text/navigation. 8270 * 8271 * If the focus is a plugin, or if the focus and cursor match and are 8272 * a contentEditable element, then the page should handle these keys. 8273 */ 8274 private native boolean nativePageShouldHandleShiftAndArrows(); 8275 private native boolean nativePointInNavCache(int x, int y, int slop); 8276 // Like many other of our native methods, you must make sure that 8277 // mNativeClass is not null before calling this method. 8278 private native void nativeRecordButtons(boolean focused, 8279 boolean pressed, boolean invalidate); 8280 private native void nativeResetSelection(); 8281 private native Point nativeSelectableText(); 8282 private native void nativeSelectAll(); 8283 private native void nativeSelectBestAt(Rect rect); 8284 private native void nativeSelectAt(int x, int y); 8285 private native int nativeSelectionX(); 8286 private native int nativeSelectionY(); 8287 private native int nativeFindIndex(); 8288 private native void nativeSetExtendSelection(); 8289 private native void nativeSetFindIsEmpty(); 8290 private native void nativeSetFindIsUp(boolean isUp); 8291 private native void nativeSetHeightCanMeasure(boolean measure); 8292 private native void nativeSetBaseLayer(int layer, Rect invalRect); 8293 private native void nativeShowCursorTimed(); 8294 private native void nativeReplaceBaseContent(int content); 8295 private native void nativeCopyBaseContentToPicture(Picture pict); 8296 private native boolean nativeHasContent(); 8297 private native void nativeSetSelectionPointer(boolean set, 8298 float scale, int x, int y); 8299 private native boolean nativeStartSelection(int x, int y); 8300 private native Rect nativeSubtractLayers(Rect content); 8301 private native int nativeTextGeneration(); 8302 // Never call this version except by updateCachedTextfield(String) - 8303 // we always want to pass in our generation number. 8304 private native void nativeUpdateCachedTextfield(String updatedText, 8305 int generation); 8306 private native boolean nativeWordSelection(int x, int y); 8307 // return NO_LEFTEDGE means failure. 8308 static final int NO_LEFTEDGE = -1; 8309 native int nativeGetBlockLeftEdge(int x, int y, float scale); 8310 8311 // Returns a pointer to the scrollable LayerAndroid at the given point. 8312 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 8313 Rect scrollBounds); 8314 /** 8315 * Scroll the specified layer. 8316 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 8317 * @param newX Destination x position to which to scroll. 8318 * @param newY Destination y position to which to scroll. 8319 * @return True if the layer is successfully scrolled. 8320 */ 8321 private native boolean nativeScrollLayer(int layer, int newX, int newY); 8322} 8323