WebView.java revision 1415bb7a948e0add9f6beb6dccbea70e9d2bedd0
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import com.android.internal.R; 20 21import android.annotation.Widget; 22import android.app.AlertDialog; 23import android.content.BroadcastReceiver; 24import android.content.ClipboardManager; 25import android.content.Context; 26import android.content.DialogInterface; 27import android.content.DialogInterface.OnCancelListener; 28import android.content.Intent; 29import android.content.IntentFilter; 30import android.content.pm.PackageInfo; 31import android.content.pm.PackageManager; 32import android.content.res.Configuration; 33import android.content.res.Resources; 34import android.database.DataSetObserver; 35import android.graphics.Bitmap; 36import android.graphics.BitmapFactory; 37import android.graphics.BitmapShader; 38import android.graphics.Canvas; 39import android.graphics.Color; 40import android.graphics.CornerPathEffect; 41import android.graphics.DrawFilter; 42import android.graphics.Paint; 43import android.graphics.PaintFlagsDrawFilter; 44import android.graphics.Picture; 45import android.graphics.Point; 46import android.graphics.Rect; 47import android.graphics.RectF; 48import android.graphics.Region; 49import android.graphics.Shader; 50import android.graphics.drawable.Drawable; 51import android.net.Proxy; 52import android.net.ProxyProperties; 53import android.net.Uri; 54import android.net.http.SslCertificate; 55import android.os.AsyncTask; 56import android.os.Bundle; 57import android.os.Handler; 58import android.os.Message; 59import android.os.SystemClock; 60import android.provider.Settings; 61import android.speech.tts.TextToSpeech; 62import android.text.Selection; 63import android.text.Spannable; 64import android.util.AttributeSet; 65import android.util.EventLog; 66import android.util.Log; 67import android.view.Gravity; 68import android.view.KeyCharacterMap; 69import android.view.KeyEvent; 70import android.view.LayoutInflater; 71import android.view.MotionEvent; 72import android.view.ScaleGestureDetector; 73import android.view.SoundEffectConstants; 74import android.view.VelocityTracker; 75import android.view.View; 76import android.view.ViewConfiguration; 77import android.view.ViewGroup; 78import android.view.ViewParent; 79import android.view.ViewTreeObserver; 80import android.view.accessibility.AccessibilityManager; 81import android.view.inputmethod.EditorInfo; 82import android.view.inputmethod.InputConnection; 83import android.view.inputmethod.InputMethodManager; 84import android.webkit.WebTextView.AutoCompleteAdapter; 85import android.webkit.WebViewCore.EventHub; 86import android.webkit.WebViewCore.TouchEventData; 87import android.webkit.WebViewCore.TouchHighlightData; 88import android.widget.AbsoluteLayout; 89import android.widget.Adapter; 90import android.widget.AdapterView; 91import android.widget.AdapterView.OnItemClickListener; 92import android.widget.ArrayAdapter; 93import android.widget.CheckedTextView; 94import android.widget.EdgeGlow; 95import android.widget.LinearLayout; 96import android.widget.ListView; 97import android.widget.OverScroller; 98import android.widget.Toast; 99 100import java.io.File; 101import java.io.FileInputStream; 102import java.io.FileNotFoundException; 103import java.io.FileOutputStream; 104import java.net.URLDecoder; 105import java.util.ArrayList; 106import java.util.HashMap; 107import java.util.HashSet; 108import java.util.List; 109import java.util.Map; 110import java.util.Set; 111import java.util.regex.Matcher; 112import java.util.regex.Pattern; 113 114import junit.framework.Assert; 115 116/** 117 * <p>A View that displays web pages. This class is the basis upon which you 118 * can roll your own web browser or simply display some online content within your Activity. 119 * It uses the WebKit rendering engine to display 120 * web pages and includes methods to navigate forward and backward 121 * through a history, zoom in and out, perform text searches and more.</p> 122 * <p>To enable the built-in zoom, set 123 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 124 * (introduced in API version 3). 125 * <p>Note that, in order for your Activity to access the Internet and load web pages 126 * in a WebView, you must add the {@code INTERNET} permissions to your 127 * Android Manifest file:</p> 128 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 129 * 130 * <p>This must be a child of the <a 131 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 132 * element.</p> 133 * 134 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 135 * tutorial</a>.</p> 136 * 137 * <h3>Basic usage</h3> 138 * 139 * <p>By default, a WebView provides no browser-like widgets, does not 140 * enable JavaScript and web page errors are ignored. If your goal is only 141 * to display some HTML as a part of your UI, this is probably fine; 142 * the user won't need to interact with the web page beyond reading 143 * it, and the web page won't need to interact with the user. If you 144 * actually want a full-blown web browser, then you probably want to 145 * invoke the Browser application with a URL Intent rather than show it 146 * with a WebView. For example: 147 * <pre> 148 * Uri uri = Uri.parse("http://www.example.com"); 149 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 150 * startActivity(intent); 151 * </pre> 152 * <p>See {@link android.content.Intent} for more information.</p> 153 * 154 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 155 * or set the entire Activity window as a WebView during {@link 156 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 157 * <pre class="prettyprint"> 158 * WebView webview = new WebView(this); 159 * setContentView(webview); 160 * </pre> 161 * 162 * <p>Then load the desired web page:</p> 163 * <pre> 164 * // Simplest usage: note that an exception will NOT be thrown 165 * // if there is an error loading this page (see below). 166 * webview.loadUrl("http://slashdot.org/"); 167 * 168 * // OR, you can also load from an HTML string: 169 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 170 * webview.loadData(summary, "text/html", "utf-8"); 171 * // ... although note that there are restrictions on what this HTML can do. 172 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 173 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 174 * </pre> 175 * 176 * <p>A WebView has several customization points where you can add your 177 * own behavior. These are:</p> 178 * 179 * <ul> 180 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 181 * This class is called when something that might impact a 182 * browser UI happens, for instance, progress updates and 183 * JavaScript alerts are sent here (see <a 184 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 185 * </li> 186 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 187 * It will be called when things happen that impact the 188 * rendering of the content, eg, errors or form submissions. You 189 * can also intercept URL loading here (via {@link 190 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 191 * shouldOverrideUrlLoading()}).</li> 192 * <li>Modifying the {@link android.webkit.WebSettings}, such as 193 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 194 * setJavaScriptEnabled()}. </li> 195 * <li>Adding JavaScript-to-Java interfaces with the {@link 196 * android.webkit.WebView#addJavascriptInterface} method. 197 * This lets you bind Java objects into the WebView so they can be 198 * controlled from the web pages JavaScript.</li> 199 * </ul> 200 * 201 * <p>Here's a more complicated example, showing error handling, 202 * settings, and progress notification:</p> 203 * 204 * <pre class="prettyprint"> 205 * // Let's display the progress in the activity title bar, like the 206 * // browser app does. 207 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 208 * 209 * webview.getSettings().setJavaScriptEnabled(true); 210 * 211 * final Activity activity = this; 212 * webview.setWebChromeClient(new WebChromeClient() { 213 * public void onProgressChanged(WebView view, int progress) { 214 * // Activities and WebViews measure progress with different scales. 215 * // The progress meter will automatically disappear when we reach 100% 216 * activity.setProgress(progress * 1000); 217 * } 218 * }); 219 * webview.setWebViewClient(new WebViewClient() { 220 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 221 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 222 * } 223 * }); 224 * 225 * webview.loadUrl("http://slashdot.org/"); 226 * </pre> 227 * 228 * <h3>Cookie and window management</h3> 229 * 230 * <p>For obvious security reasons, your application has its own 231 * cache, cookie store etc.—it does not share the Browser 232 * application's data. Cookies are managed on a separate thread, so 233 * operations like index building don't block the UI 234 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 235 * if you want to use cookies in your application. 236 * </p> 237 * 238 * <p>By default, requests by the HTML to open new windows are 239 * ignored. This is true whether they be opened by JavaScript or by 240 * the target attribute on a link. You can customize your 241 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 242 * and render them in whatever manner you want.</p> 243 * 244 * <p>The standard behavior for an Activity is to be destroyed and 245 * recreated when the device orientation or any other configuration changes. This will cause 246 * the WebView to reload the current page. If you don't want that, you 247 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 248 * changes, and then just leave the WebView alone. It'll automatically 249 * re-orient itself as appropriate. Read <a 250 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 251 * more information about how to handle configuration changes during runtime.</p> 252 * 253 * 254 * <h3>Building web pages to support different screen densities</h3> 255 * 256 * <p>The screen density of a device is based on the screen resolution. A screen with low density 257 * has fewer available pixels per inch, where a screen with high density 258 * has more — sometimes significantly more — pixels per inch. The density of a 259 * screen is important because, other things being equal, a UI element (such as a button) whose 260 * height and width are defined in terms of screen pixels will appear larger on the lower density 261 * screen and smaller on the higher density screen. 262 * For simplicity, Android collapses all actual screen densities into three generalized densities: 263 * high, medium, and low.</p> 264 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 265 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 266 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 267 * are bigger). 268 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 269 * you (as a web developer) target screens with different screen densities.</p> 270 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 271 * <ul> 272 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 273 * default scaling factor used for the current device. For example, if the value of {@code 274 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 275 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 276 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 277 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 278 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 279 * (discussed below), then you can stop this default scaling behavior.</li> 280 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 281 * densities for which this style sheet is to be used. The corresponding value should be either 282 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 283 * density, or high density screens, respectively. For example: 284 * <pre> 285 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 286 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 287 * which is the high density pixel ratio.</p> 288 * </li> 289 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 290 * this to specify the target density for which the web page is designed, using the following 291 * values: 292 * <ul> 293 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 294 * occurs.</li> 295 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 296 * as appropriate.</li> 297 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 298 * low density screens scale down. This is also the default behavior.</li> 299 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 300 * as appropriate.</li> 301 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 302 * values are 70-400).</li> 303 * </ul> 304 * <p>Here's an example meta tag to specify the target density:</p> 305 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 306 * </ul> 307 * <p>If you want to modify your web page for different densities, by using the {@code 308 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 309 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 310 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 311 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 312 * 313 * 314 */ 315@Widget 316public class WebView extends AbsoluteLayout 317 implements ViewTreeObserver.OnGlobalFocusChangeListener, 318 ViewGroup.OnHierarchyChangeListener { 319 320 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 321 public void onGlobalLayout() { 322 if (isShown()) { 323 setGLRectViewport(); 324 } 325 } 326 } 327 328 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 329 public void onScrollChanged() { 330 if (isShown()) { 331 setGLRectViewport(); 332 } 333 } 334 } 335 336 // The listener to capture global layout change event. 337 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 338 339 // The listener to capture scroll event. 340 private InnerScrollChangedListener mScrollChangedListener = null; 341 342 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 343 // the screen all-the-time. Good for profiling our drawing code 344 static private final boolean AUTO_REDRAW_HACK = false; 345 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 346 private boolean mAutoRedraw; 347 348 // Reference to the AlertDialog displayed by InvokeListBox. 349 // It's used to dismiss the dialog in destroy if not done before. 350 private AlertDialog mListBoxDialog = null; 351 352 static final String LOGTAG = "webview"; 353 354 private ZoomManager mZoomManager; 355 356 private Rect mGLRectViewport; 357 358 /** 359 * Transportation object for returning WebView across thread boundaries. 360 */ 361 public class WebViewTransport { 362 private WebView mWebview; 363 364 /** 365 * Set the WebView to the transportation object. 366 * @param webview The WebView to transport. 367 */ 368 public synchronized void setWebView(WebView webview) { 369 mWebview = webview; 370 } 371 372 /** 373 * Return the WebView object. 374 * @return WebView The transported WebView object. 375 */ 376 public synchronized WebView getWebView() { 377 return mWebview; 378 } 379 } 380 381 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 382 private final CallbackProxy mCallbackProxy; 383 384 private final WebViewDatabase mDatabase; 385 386 // SSL certificate for the main top-level page (if secure) 387 private SslCertificate mCertificate; 388 389 // Native WebView pointer that is 0 until the native object has been 390 // created. 391 private int mNativeClass; 392 // This would be final but it needs to be set to null when the WebView is 393 // destroyed. 394 private WebViewCore mWebViewCore; 395 // Handler for dispatching UI messages. 396 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 397 private WebTextView mWebTextView; 398 // Used to ignore changes to webkit text that arrives to the UI side after 399 // more key events. 400 private int mTextGeneration; 401 402 /* package */ void incrementTextGeneration() { mTextGeneration++; } 403 404 // Used by WebViewCore to create child views. 405 /* package */ final ViewManager mViewManager; 406 407 // Used to display in full screen mode 408 PluginFullScreenHolder mFullScreenHolder; 409 410 /** 411 * Position of the last touch event. 412 */ 413 private float mLastTouchX; 414 private float 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 private boolean mForwardTouchEvents = false; 477 478 // Whether to prevent default during touch. The initial value depends on 479 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 480 // for touch down. Otherwise UI will wait for the answer of the first 481 // confirmed move before taking over the control. 482 private static final int PREVENT_DEFAULT_NO = 0; 483 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 484 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 485 private static final int PREVENT_DEFAULT_YES = 3; 486 private static final int PREVENT_DEFAULT_IGNORE = 4; 487 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 488 489 // true when the touch movement exceeds the slop 490 private boolean mConfirmMove; 491 492 // if true, touch events will be first processed by WebCore, if prevent 493 // default is not set, the UI will continue handle them. 494 private boolean mDeferTouchProcess; 495 496 // if true, multi-touch events will be passed to webkit directly before UI 497 private boolean mDeferMultitouch = false; 498 499 // to avoid interfering with the current touch events, track them 500 // separately. Currently no snapping or fling in the deferred process mode 501 private int mDeferTouchMode = TOUCH_DONE_MODE; 502 private float mLastDeferTouchX; 503 private float mLastDeferTouchY; 504 505 // To keep track of whether the current drag was initiated by a WebTextView, 506 // so that we know not to hide the cursor 507 boolean mDragFromTextInput; 508 509 // Whether or not to draw the cursor ring. 510 private boolean mDrawCursorRing = true; 511 512 // true if onPause has been called (and not onResume) 513 private boolean mIsPaused; 514 515 private HitTestResult mInitialHitTestResult; 516 517 /** 518 * Customizable constant 519 */ 520 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 521 private int mTouchSlopSquare; 522 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 523 private int mDoubleTapSlopSquare; 524 // pre-computed density adjusted navigation slop 525 private int mNavSlop; 526 // This should be ViewConfiguration.getTapTimeout() 527 // But system time out is 100ms, which is too short for the browser. 528 // In the browser, if it switches out of tap too soon, jump tap won't work. 529 private static final int TAP_TIMEOUT = 200; 530 // This should be ViewConfiguration.getLongPressTimeout() 531 // But system time out is 500ms, which is too short for the browser. 532 // With a short timeout, it's difficult to treat trigger a short press. 533 private static final int LONG_PRESS_TIMEOUT = 1000; 534 // needed to avoid flinging after a pause of no movement 535 private static final int MIN_FLING_TIME = 250; 536 // draw unfiltered after drag is held without movement 537 private static final int MOTIONLESS_TIME = 100; 538 // The amount of content to overlap between two screens when going through 539 // pages with the space bar, in pixels. 540 private static final int PAGE_SCROLL_OVERLAP = 24; 541 542 /** 543 * These prevent calling requestLayout if either dimension is fixed. This 544 * depends on the layout parameters and the measure specs. 545 */ 546 boolean mWidthCanMeasure; 547 boolean mHeightCanMeasure; 548 549 // Remember the last dimensions we sent to the native side so we can avoid 550 // sending the same dimensions more than once. 551 int mLastWidthSent; 552 int mLastHeightSent; 553 554 private int mContentWidth; // cache of value from WebViewCore 555 private int mContentHeight; // cache of value from WebViewCore 556 557 // Need to have the separate control for horizontal and vertical scrollbar 558 // style than the View's single scrollbar style 559 private boolean mOverlayHorizontalScrollbar = true; 560 private boolean mOverlayVerticalScrollbar = false; 561 562 // our standard speed. this way small distances will be traversed in less 563 // time than large distances, but we cap the duration, so that very large 564 // distances won't take too long to get there. 565 private static final int STD_SPEED = 480; // pixels per second 566 // time for the longest scroll animation 567 private static final int MAX_DURATION = 750; // milliseconds 568 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 569 570 // Used by OverScrollGlow 571 OverScroller mScroller; 572 573 private boolean mInOverScrollMode = false; 574 private static Paint mOverScrollBackground; 575 private static Paint mOverScrollBorder; 576 577 private boolean mWrapContent; 578 private static final int MOTIONLESS_FALSE = 0; 579 private static final int MOTIONLESS_PENDING = 1; 580 private static final int MOTIONLESS_TRUE = 2; 581 private static final int MOTIONLESS_IGNORE = 3; 582 private int mHeldMotionless; 583 584 // An instance for injecting accessibility in WebViews with disabled 585 // JavaScript or ones for which no accessibility script exists 586 private AccessibilityInjector mAccessibilityInjector; 587 588 // flag indicating if accessibility script is injected so we 589 // know to handle Shift and arrows natively first 590 private boolean mAccessibilityScriptInjected; 591 592 // the color used to highlight the touch rectangles 593 private static final int mHightlightColor = 0x33000000; 594 // the round corner for the highlight path 595 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 596 // the region indicating where the user touched on the screen 597 private Region mTouchHighlightRegion = new Region(); 598 // the paint for the touch highlight 599 private Paint mTouchHightlightPaint; 600 // debug only 601 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 602 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 603 private Paint mTouchCrossHairColor; 604 private int mTouchHighlightX; 605 private int mTouchHighlightY; 606 607 /* 608 * Private message ids 609 */ 610 private static final int REMEMBER_PASSWORD = 1; 611 private static final int NEVER_REMEMBER_PASSWORD = 2; 612 private static final int SWITCH_TO_SHORTPRESS = 3; 613 private static final int SWITCH_TO_LONGPRESS = 4; 614 private static final int RELEASE_SINGLE_TAP = 5; 615 private static final int REQUEST_FORM_DATA = 6; 616 private static final int RESUME_WEBCORE_PRIORITY = 7; 617 private static final int DRAG_HELD_MOTIONLESS = 8; 618 private static final int AWAKEN_SCROLL_BARS = 9; 619 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 620 private static final int SCROLL_SELECT_TEXT = 11; 621 622 623 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 624 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 625 626 /* 627 * Package message ids 628 */ 629 //! arg1=x, arg2=y 630 static final int SCROLL_TO_MSG_ID = 101; 631 static final int SCROLL_BY_MSG_ID = 102; 632 //! arg1=x, arg2=y 633 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 634 //! arg1=x, arg2=y 635 static final int SYNC_SCROLL_TO_MSG_ID = 104; 636 static final int NEW_PICTURE_MSG_ID = 105; 637 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 638 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 639 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 640 static final int UPDATE_ZOOM_RANGE = 109; 641 static final int UNHANDLED_NAV_KEY = 110; 642 static final int CLEAR_TEXT_ENTRY = 111; 643 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 644 static final int SHOW_RECT_MSG_ID = 113; 645 static final int LONG_PRESS_CENTER = 114; 646 static final int PREVENT_TOUCH_ID = 115; 647 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 648 // obj=Rect in doc coordinates 649 static final int INVAL_RECT_MSG_ID = 117; 650 static final int REQUEST_KEYBOARD = 118; 651 static final int DO_MOTION_UP = 119; 652 static final int SHOW_FULLSCREEN = 120; 653 static final int HIDE_FULLSCREEN = 121; 654 static final int DOM_FOCUS_CHANGED = 122; 655 static final int REPLACE_BASE_CONTENT = 123; 656 static final int FORM_DID_BLUR = 124; 657 static final int RETURN_LABEL = 125; 658 static final int FIND_AGAIN = 126; 659 static final int CENTER_FIT_RECT = 127; 660 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 661 static final int SET_SCROLLBAR_MODES = 129; 662 static final int SELECTION_STRING_CHANGED = 130; 663 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 664 static final int SAVE_WEBARCHIVE_FINISHED = 132; 665 666 static final int SET_AUTOFILLABLE = 133; 667 static final int AUTOFILL_COMPLETE = 134; 668 669 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 670 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 671 672 static final String[] HandlerPrivateDebugString = { 673 "REMEMBER_PASSWORD", // = 1; 674 "NEVER_REMEMBER_PASSWORD", // = 2; 675 "SWITCH_TO_SHORTPRESS", // = 3; 676 "SWITCH_TO_LONGPRESS", // = 4; 677 "RELEASE_SINGLE_TAP", // = 5; 678 "REQUEST_FORM_DATA", // = 6; 679 "RESUME_WEBCORE_PRIORITY", // = 7; 680 "DRAG_HELD_MOTIONLESS", // = 8; 681 "AWAKEN_SCROLL_BARS", // = 9; 682 "PREVENT_DEFAULT_TIMEOUT", // = 10; 683 "SCROLL_SELECT_TEXT" // = 11; 684 }; 685 686 static final String[] HandlerPackageDebugString = { 687 "SCROLL_TO_MSG_ID", // = 101; 688 "SCROLL_BY_MSG_ID", // = 102; 689 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 690 "SYNC_SCROLL_TO_MSG_ID", // = 104; 691 "NEW_PICTURE_MSG_ID", // = 105; 692 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 693 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 694 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 695 "UPDATE_ZOOM_RANGE", // = 109; 696 "UNHANDLED_NAV_KEY", // = 110; 697 "CLEAR_TEXT_ENTRY", // = 111; 698 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 699 "SHOW_RECT_MSG_ID", // = 113; 700 "LONG_PRESS_CENTER", // = 114; 701 "PREVENT_TOUCH_ID", // = 115; 702 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 703 "INVAL_RECT_MSG_ID", // = 117; 704 "REQUEST_KEYBOARD", // = 118; 705 "DO_MOTION_UP", // = 119; 706 "SHOW_FULLSCREEN", // = 120; 707 "HIDE_FULLSCREEN", // = 121; 708 "DOM_FOCUS_CHANGED", // = 122; 709 "REPLACE_BASE_CONTENT", // = 123; 710 "FORM_DID_BLUR", // = 124; 711 "RETURN_LABEL", // = 125; 712 "FIND_AGAIN", // = 126; 713 "CENTER_FIT_RECT", // = 127; 714 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 715 "SET_SCROLLBAR_MODES", // = 129; 716 "SELECTION_STRING_CHANGED", // = 130; 717 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 718 "SAVE_WEBARCHIVE_FINISHED", // = 132; 719 "SET_AUTOFILLABLE", // = 133; 720 "AUTOFILL_COMPLETE" // = 134; 721 }; 722 723 // If the site doesn't use the viewport meta tag to specify the viewport, 724 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 725 static final int DEFAULT_VIEWPORT_WIDTH = 980; 726 727 // normally we try to fit the content to the minimum preferred width 728 // calculated by the Webkit. To avoid the bad behavior when some site's 729 // minimum preferred width keeps growing when changing the viewport width or 730 // the minimum preferred width is huge, an upper limit is needed. 731 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 732 733 // initial scale in percent. 0 means using default. 734 private int mInitialScaleInPercent = 0; 735 736 private boolean mUserScroll = false; 737 738 private int mSnapScrollMode = SNAP_NONE; 739 private static final int SNAP_NONE = 0; 740 private static final int SNAP_LOCK = 1; // not a separate state 741 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 742 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 743 private boolean mSnapPositive; 744 745 // keep these in sync with their counterparts in WebView.cpp 746 private static final int DRAW_EXTRAS_NONE = 0; 747 private static final int DRAW_EXTRAS_FIND = 1; 748 private static final int DRAW_EXTRAS_SELECTION = 2; 749 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 750 751 // keep this in sync with WebCore:ScrollbarMode in WebKit 752 private static final int SCROLLBAR_AUTO = 0; 753 private static final int SCROLLBAR_ALWAYSOFF = 1; 754 // as we auto fade scrollbar, this is ignored. 755 private static final int SCROLLBAR_ALWAYSON = 2; 756 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 757 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 758 759 // constants for determining script injection strategy 760 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 761 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 762 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 763 764 // the alias via which accessibility JavaScript interface is exposed 765 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 766 767 // JavaScript to inject the script chooser which will 768 // pick the right script for the current URL 769 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 770 "javascript:(function() {" + 771 " var chooser = document.createElement('script');" + 772 " chooser.type = 'text/javascript';" + 773 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 774 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 775 " })();"; 776 777 // Regular expression that matches the "axs" URL parameter. 778 // The value of 0 means the accessibility script is opted out 779 // The value of 1 means the accessibility script is already injected 780 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 781 782 // variable to cache the above pattern in case accessibility is enabled. 783 private Pattern mMatchAxsUrlParameterPattern; 784 785 /** 786 * Max distance to overscroll by in pixels. 787 * This how far content can be pulled beyond its normal bounds by the user. 788 */ 789 private int mOverscrollDistance; 790 791 /** 792 * Max distance to overfling by in pixels. 793 * This is how far flinged content can move beyond the end of its normal bounds. 794 */ 795 private int mOverflingDistance; 796 797 private OverScrollGlow mOverScrollGlow; 798 799 // Used to match key downs and key ups 800 private boolean mGotKeyDown; 801 802 /* package */ static boolean mLogEvent = true; 803 804 // for event log 805 private long mLastTouchUpTime = 0; 806 807 private WebViewCore.AutoFillData mAutoFillData; 808 809 /** 810 * URI scheme for telephone number 811 */ 812 public static final String SCHEME_TEL = "tel:"; 813 /** 814 * URI scheme for email address 815 */ 816 public static final String SCHEME_MAILTO = "mailto:"; 817 /** 818 * URI scheme for map address 819 */ 820 public static final String SCHEME_GEO = "geo:0,0?q="; 821 822 private int mBackgroundColor = Color.WHITE; 823 824 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 825 private int mAutoScrollX = 0; 826 private int mAutoScrollY = 0; 827 private int mMinAutoScrollX = 0; 828 private int mMaxAutoScrollX = 0; 829 private int mMinAutoScrollY = 0; 830 private int mMaxAutoScrollY = 0; 831 private Rect mScrollingLayerBounds = new Rect(); 832 private boolean mSentAutoScrollMessage = false; 833 834 // Used to notify listeners of a new picture. 835 private PictureListener mPictureListener; 836 /** 837 * Interface to listen for new pictures as they change. 838 */ 839 public interface PictureListener { 840 /** 841 * Notify the listener that the picture has changed. 842 * @param view The WebView that owns the picture. 843 * @param picture The new picture. 844 */ 845 public void onNewPicture(WebView view, Picture picture); 846 } 847 848 // FIXME: Want to make this public, but need to change the API file. 849 public /*static*/ class HitTestResult { 850 /** 851 * Default HitTestResult, where the target is unknown 852 */ 853 public static final int UNKNOWN_TYPE = 0; 854 /** 855 * HitTestResult for hitting a HTML::a tag 856 */ 857 public static final int ANCHOR_TYPE = 1; 858 /** 859 * HitTestResult for hitting a phone number 860 */ 861 public static final int PHONE_TYPE = 2; 862 /** 863 * HitTestResult for hitting a map address 864 */ 865 public static final int GEO_TYPE = 3; 866 /** 867 * HitTestResult for hitting an email address 868 */ 869 public static final int EMAIL_TYPE = 4; 870 /** 871 * HitTestResult for hitting an HTML::img tag 872 */ 873 public static final int IMAGE_TYPE = 5; 874 /** 875 * HitTestResult for hitting a HTML::a tag which contains HTML::img 876 */ 877 public static final int IMAGE_ANCHOR_TYPE = 6; 878 /** 879 * HitTestResult for hitting a HTML::a tag with src=http 880 */ 881 public static final int SRC_ANCHOR_TYPE = 7; 882 /** 883 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 884 */ 885 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 886 /** 887 * HitTestResult for hitting an edit text area 888 */ 889 public static final int EDIT_TEXT_TYPE = 9; 890 891 private int mType; 892 private String mExtra; 893 894 HitTestResult() { 895 mType = UNKNOWN_TYPE; 896 } 897 898 private void setType(int type) { 899 mType = type; 900 } 901 902 private void setExtra(String extra) { 903 mExtra = extra; 904 } 905 906 public int getType() { 907 return mType; 908 } 909 910 public String getExtra() { 911 return mExtra; 912 } 913 } 914 915 /** 916 * Construct a new WebView with a Context object. 917 * @param context A Context object used to access application assets. 918 */ 919 public WebView(Context context) { 920 this(context, null); 921 } 922 923 /** 924 * Construct a new WebView with layout parameters. 925 * @param context A Context object used to access application assets. 926 * @param attrs An AttributeSet passed to our parent. 927 */ 928 public WebView(Context context, AttributeSet attrs) { 929 this(context, attrs, com.android.internal.R.attr.webViewStyle); 930 } 931 932 /** 933 * Construct a new WebView with layout parameters and a default style. 934 * @param context A Context object used to access application assets. 935 * @param attrs An AttributeSet passed to our parent. 936 * @param defStyle The default style resource ID. 937 */ 938 public WebView(Context context, AttributeSet attrs, int defStyle) { 939 this(context, attrs, defStyle, false); 940 } 941 942 /** 943 * Construct a new WebView with layout parameters and a default style. 944 * @param context A Context object used to access application assets. 945 * @param attrs An AttributeSet passed to our parent. 946 * @param defStyle The default style resource ID. 947 */ 948 public WebView(Context context, AttributeSet attrs, int defStyle, 949 boolean privateBrowsing) { 950 this(context, attrs, defStyle, null, privateBrowsing); 951 } 952 953 /** 954 * Construct a new WebView with layout parameters, a default style and a set 955 * of custom Javscript interfaces to be added to the WebView at initialization 956 * time. This guarantees that these interfaces will be available when the JS 957 * context is initialized. 958 * @param context A Context object used to access application assets. 959 * @param attrs An AttributeSet passed to our parent. 960 * @param defStyle The default style resource ID. 961 * @param javaScriptInterfaces is a Map of interface names, as keys, and 962 * object implementing those interfaces, as values. 963 * @hide pending API council approval. 964 */ 965 protected WebView(Context context, AttributeSet attrs, int defStyle, 966 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 967 super(context, attrs, defStyle); 968 969 // Used by the chrome stack to find application paths 970 JniUtil.setContext(context); 971 972 if (AccessibilityManager.getInstance(context).isEnabled()) { 973 if (javaScriptInterfaces == null) { 974 javaScriptInterfaces = new HashMap<String, Object>(); 975 } 976 exposeAccessibilityJavaScriptApi(javaScriptInterfaces); 977 } 978 979 mCallbackProxy = new CallbackProxy(context, this); 980 mViewManager = new ViewManager(this); 981 L10nUtils.loadStrings(context); 982 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 983 mDatabase = WebViewDatabase.getInstance(context); 984 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 985 mZoomManager = new ZoomManager(this, mCallbackProxy); 986 987 /* The init method must follow the creation of certain member variables, 988 * such as the mZoomManager. 989 */ 990 init(); 991 setupPackageListener(context); 992 setupProxyListener(context); 993 updateMultiTouchSupport(context); 994 995 if (privateBrowsing) { 996 startPrivateBrowsing(); 997 } 998 999 mAutoFillData = new WebViewCore.AutoFillData(); 1000 } 1001 1002 private static class ProxyReceiver extends BroadcastReceiver { 1003 @Override 1004 public void onReceive(Context context, Intent intent) { 1005 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1006 handleProxyBroadcast(intent); 1007 } 1008 } 1009 } 1010 1011 /* 1012 * A variable to track if there is a receiver added for PROXY_CHANGE_ACTION 1013 */ 1014 private static boolean sProxyReceiverAdded; 1015 1016 private static synchronized void setupProxyListener(Context context) { 1017 if (sProxyReceiverAdded) { 1018 return; 1019 } 1020 IntentFilter filter = new IntentFilter(); 1021 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1022 Intent currentProxy = context.getApplicationContext().registerReceiver( 1023 new ProxyReceiver(), filter); 1024 sProxyReceiverAdded = true; 1025 if (currentProxy != null) { 1026 handleProxyBroadcast(currentProxy); 1027 } 1028 } 1029 1030 private static void handleProxyBroadcast(Intent intent) { 1031 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1032 if (proxyProperties == null || proxyProperties.getHost() == null) { 1033 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, ""); 1034 return; 1035 } 1036 1037 String host = proxyProperties.getHost(); 1038 int port = proxyProperties.getPort(); 1039 if (port != 0) 1040 host += ": " + port; 1041 1042 // TODO: Handle exclusion list 1043 // The plan is to make an AndroidProxyResolver, and handle the blacklist 1044 // there 1045 String exclusionList = proxyProperties.getExclusionList(); 1046 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host); 1047 } 1048 1049 /* 1050 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1051 * or ACTION_PACKAGE_REMOVED. 1052 */ 1053 private static boolean sPackageInstallationReceiverAdded = false; 1054 1055 /* 1056 * A set of Google packages we monitor for the 1057 * navigator.isApplicationInstalled() API. Add additional packages as 1058 * needed. 1059 */ 1060 private static Set<String> sGoogleApps; 1061 static { 1062 sGoogleApps = new HashSet<String>(); 1063 sGoogleApps.add("com.google.android.youtube"); 1064 } 1065 1066 private static class PackageListener extends BroadcastReceiver { 1067 @Override 1068 public void onReceive(Context context, Intent intent) { 1069 final String action = intent.getAction(); 1070 final String packageName = intent.getData().getSchemeSpecificPart(); 1071 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1072 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1073 // if it is replacing, refreshPlugins() when adding 1074 return; 1075 } 1076 1077 if (sGoogleApps.contains(packageName)) { 1078 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1079 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1080 } else { 1081 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1082 } 1083 } 1084 1085 PluginManager pm = PluginManager.getInstance(context); 1086 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1087 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1088 } 1089 } 1090 } 1091 1092 private void setupPackageListener(Context context) { 1093 1094 /* 1095 * we must synchronize the instance check and the creation of the 1096 * receiver to ensure that only ONE receiver exists for all WebView 1097 * instances. 1098 */ 1099 synchronized (WebView.class) { 1100 1101 // if the receiver already exists then we do not need to register it 1102 // again 1103 if (sPackageInstallationReceiverAdded) { 1104 return; 1105 } 1106 1107 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1108 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1109 filter.addDataScheme("package"); 1110 BroadcastReceiver packageListener = new PackageListener(); 1111 context.getApplicationContext().registerReceiver(packageListener, filter); 1112 sPackageInstallationReceiverAdded = true; 1113 } 1114 1115 // check if any of the monitored apps are already installed 1116 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1117 1118 @Override 1119 protected Set<String> doInBackground(Void... unused) { 1120 Set<String> installedPackages = new HashSet<String>(); 1121 PackageManager pm = mContext.getPackageManager(); 1122 List<PackageInfo> packages = pm.getInstalledPackages(0); 1123 for (PackageInfo p : packages) { 1124 if (sGoogleApps.contains(p.packageName)) { 1125 installedPackages.add(p.packageName); 1126 } 1127 } 1128 return installedPackages; 1129 } 1130 1131 // Executes on the UI thread 1132 @Override 1133 protected void onPostExecute(Set<String> installedPackages) { 1134 if (mWebViewCore != null) { 1135 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1136 } 1137 } 1138 }; 1139 task.execute(); 1140 } 1141 1142 void updateMultiTouchSupport(Context context) { 1143 mZoomManager.updateMultiTouchSupport(context); 1144 } 1145 1146 private void init() { 1147 setWillNotDraw(false); 1148 setFocusable(true); 1149 setFocusableInTouchMode(true); 1150 setClickable(true); 1151 setLongClickable(true); 1152 1153 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1154 int slop = configuration.getScaledTouchSlop(); 1155 mTouchSlopSquare = slop * slop; 1156 mMinLockSnapReverseDistance = slop; 1157 slop = configuration.getScaledDoubleTapSlop(); 1158 mDoubleTapSlopSquare = slop * slop; 1159 final float density = getContext().getResources().getDisplayMetrics().density; 1160 // use one line height, 16 based on our current default font, for how 1161 // far we allow a touch be away from the edge of a link 1162 mNavSlop = (int) (16 * density); 1163 mZoomManager.init(density); 1164 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1165 1166 // Compute the inverse of the density squared. 1167 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1168 1169 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1170 mOverflingDistance = configuration.getScaledOverflingDistance(); 1171 } 1172 1173 /** 1174 * Exposes accessibility APIs to JavaScript by appending them to the JavaScript 1175 * interfaces map provided by the WebView client. In case of conflicting 1176 * alias with the one of the accessibility API the user specified one wins. 1177 * 1178 * @param javaScriptInterfaces A map with interfaces to be exposed to JavaScript. 1179 */ 1180 private void exposeAccessibilityJavaScriptApi(Map<String, Object> javaScriptInterfaces) { 1181 if (javaScriptInterfaces.containsKey(ALIAS_ACCESSIBILITY_JS_INTERFACE)) { 1182 Log.w(LOGTAG, "JavaScript interface mapped to \"" + ALIAS_ACCESSIBILITY_JS_INTERFACE 1183 + "\" overrides the accessibility API JavaScript interface. No accessibility" 1184 + "API will be exposed to JavaScript!"); 1185 return; 1186 } 1187 1188 // expose the TTS for now ... 1189 javaScriptInterfaces.put(ALIAS_ACCESSIBILITY_JS_INTERFACE, 1190 new TextToSpeech(getContext(), null)); 1191 } 1192 1193 @Override 1194 public void setOverScrollMode(int mode) { 1195 super.setOverScrollMode(mode); 1196 if (mode != OVER_SCROLL_NEVER) { 1197 if (mOverScrollGlow == null) { 1198 mOverScrollGlow = new OverScrollGlow(this); 1199 } 1200 } else { 1201 mOverScrollGlow = null; 1202 } 1203 } 1204 1205 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1206 final float density = mContext.getResources().getDisplayMetrics().density 1207 * 100 / zoomDensity; 1208 mNavSlop = (int) (16 * density); 1209 mZoomManager.updateDefaultZoomDensity(density); 1210 } 1211 1212 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1213 String password, final Message resumeMsg) { 1214 boolean rVal = false; 1215 if (resumeMsg == null) { 1216 // null resumeMsg implies saving password silently 1217 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1218 } else { 1219 final Message remember = mPrivateHandler.obtainMessage( 1220 REMEMBER_PASSWORD); 1221 remember.getData().putString("host", schemePlusHost); 1222 remember.getData().putString("username", username); 1223 remember.getData().putString("password", password); 1224 remember.obj = resumeMsg; 1225 1226 final Message neverRemember = mPrivateHandler.obtainMessage( 1227 NEVER_REMEMBER_PASSWORD); 1228 neverRemember.getData().putString("host", schemePlusHost); 1229 neverRemember.getData().putString("username", username); 1230 neverRemember.getData().putString("password", password); 1231 neverRemember.obj = resumeMsg; 1232 1233 new AlertDialog.Builder(getContext()) 1234 .setTitle(com.android.internal.R.string.save_password_label) 1235 .setMessage(com.android.internal.R.string.save_password_message) 1236 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1237 new DialogInterface.OnClickListener() { 1238 public void onClick(DialogInterface dialog, int which) { 1239 resumeMsg.sendToTarget(); 1240 } 1241 }) 1242 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1243 new DialogInterface.OnClickListener() { 1244 public void onClick(DialogInterface dialog, int which) { 1245 remember.sendToTarget(); 1246 } 1247 }) 1248 .setNegativeButton(com.android.internal.R.string.save_password_never, 1249 new DialogInterface.OnClickListener() { 1250 public void onClick(DialogInterface dialog, int which) { 1251 neverRemember.sendToTarget(); 1252 } 1253 }) 1254 .setOnCancelListener(new OnCancelListener() { 1255 public void onCancel(DialogInterface dialog) { 1256 resumeMsg.sendToTarget(); 1257 } 1258 }).show(); 1259 // Return true so that WebViewCore will pause while the dialog is 1260 // up. 1261 rVal = true; 1262 } 1263 return rVal; 1264 } 1265 1266 @Override 1267 public void setScrollBarStyle(int style) { 1268 if (style == View.SCROLLBARS_INSIDE_INSET 1269 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1270 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1271 } else { 1272 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1273 } 1274 super.setScrollBarStyle(style); 1275 } 1276 1277 /** 1278 * Specify whether the horizontal scrollbar has overlay style. 1279 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1280 */ 1281 public void setHorizontalScrollbarOverlay(boolean overlay) { 1282 mOverlayHorizontalScrollbar = overlay; 1283 } 1284 1285 /** 1286 * Specify whether the vertical scrollbar has overlay style. 1287 * @param overlay TRUE if vertical scrollbar should have overlay style. 1288 */ 1289 public void setVerticalScrollbarOverlay(boolean overlay) { 1290 mOverlayVerticalScrollbar = overlay; 1291 } 1292 1293 /** 1294 * Return whether horizontal scrollbar has overlay style 1295 * @return TRUE if horizontal scrollbar has overlay style. 1296 */ 1297 public boolean overlayHorizontalScrollbar() { 1298 return mOverlayHorizontalScrollbar; 1299 } 1300 1301 /** 1302 * Return whether vertical scrollbar has overlay style 1303 * @return TRUE if vertical scrollbar has overlay style. 1304 */ 1305 public boolean overlayVerticalScrollbar() { 1306 return mOverlayVerticalScrollbar; 1307 } 1308 1309 /* 1310 * Return the width of the view where the content of WebView should render 1311 * to. 1312 * Note: this can be called from WebCoreThread. 1313 */ 1314 /* package */ int getViewWidth() { 1315 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1316 return getWidth(); 1317 } else { 1318 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1319 } 1320 } 1321 1322 /* 1323 * returns the height of the titlebarview (if any). Does not care about 1324 * scrolling 1325 */ 1326 int getTitleHeight() { 1327 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1328 } 1329 1330 /* 1331 * Return the amount of the titlebarview (if any) that is visible 1332 * 1333 * @hide 1334 */ 1335 public int getVisibleTitleHeight() { 1336 // need to restrict mScrollY due to over scroll 1337 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1338 } 1339 1340 /* 1341 * Return the height of the view where the content of WebView should render 1342 * to. Note that this excludes mTitleBar, if there is one. 1343 * Note: this can be called from WebCoreThread. 1344 */ 1345 /* package */ int getViewHeight() { 1346 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1347 } 1348 1349 private int getViewHeightWithTitle() { 1350 int height = getHeight(); 1351 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1352 height -= getHorizontalScrollbarHeight(); 1353 } 1354 return height; 1355 } 1356 1357 /** 1358 * @return The SSL certificate for the main top-level page or null if 1359 * there is no certificate (the site is not secure). 1360 */ 1361 public SslCertificate getCertificate() { 1362 return mCertificate; 1363 } 1364 1365 /** 1366 * Sets the SSL certificate for the main top-level page. 1367 */ 1368 public void setCertificate(SslCertificate certificate) { 1369 if (DebugFlags.WEB_VIEW) { 1370 Log.v(LOGTAG, "setCertificate=" + certificate); 1371 } 1372 // here, the certificate can be null (if the site is not secure) 1373 mCertificate = certificate; 1374 } 1375 1376 //------------------------------------------------------------------------- 1377 // Methods called by activity 1378 //------------------------------------------------------------------------- 1379 1380 /** 1381 * Save the username and password for a particular host in the WebView's 1382 * internal database. 1383 * @param host The host that required the credentials. 1384 * @param username The username for the given host. 1385 * @param password The password for the given host. 1386 */ 1387 public void savePassword(String host, String username, String password) { 1388 mDatabase.setUsernamePassword(host, username, password); 1389 } 1390 1391 /** 1392 * Set the HTTP authentication credentials for a given host and realm. 1393 * 1394 * @param host The host for the credentials. 1395 * @param realm The realm for the credentials. 1396 * @param username The username for the password. If it is null, it means 1397 * password can't be saved. 1398 * @param password The password 1399 */ 1400 public void setHttpAuthUsernamePassword(String host, String realm, 1401 String username, String password) { 1402 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1403 } 1404 1405 /** 1406 * Retrieve the HTTP authentication username and password for a given 1407 * host & realm pair 1408 * 1409 * @param host The host for which the credentials apply. 1410 * @param realm The realm for which the credentials apply. 1411 * @return String[] if found, String[0] is username, which can be null and 1412 * String[1] is password. Return null if it can't find anything. 1413 */ 1414 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1415 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1416 } 1417 1418 /** 1419 * Remove Find or Select ActionModes, if active. 1420 */ 1421 private void clearActionModes() { 1422 if (mSelectCallback != null) { 1423 mSelectCallback.finish(); 1424 } 1425 if (mFindCallback != null) { 1426 mFindCallback.finish(); 1427 } 1428 } 1429 1430 /** 1431 * Called to clear state when moving from one page to another, or changing 1432 * in some other way that makes elements associated with the current page 1433 * (such as WebTextView or ActionModes) no longer relevant. 1434 */ 1435 private void clearHelpers() { 1436 clearTextEntry(); 1437 clearActionModes(); 1438 dismissFullScreenMode(); 1439 } 1440 1441 /** 1442 * Destroy the internal state of the WebView. This method should be called 1443 * after the WebView has been removed from the view system. No other 1444 * methods may be called on a WebView after destroy. 1445 */ 1446 public void destroy() { 1447 clearHelpers(); 1448 if (mListBoxDialog != null) { 1449 mListBoxDialog.dismiss(); 1450 mListBoxDialog = null; 1451 } 1452 if (mWebViewCore != null) { 1453 // Set the handlers to null before destroying WebViewCore so no 1454 // more messages will be posted. 1455 mCallbackProxy.setWebViewClient(null); 1456 mCallbackProxy.setWebChromeClient(null); 1457 // Tell WebViewCore to destroy itself 1458 synchronized (this) { 1459 WebViewCore webViewCore = mWebViewCore; 1460 mWebViewCore = null; // prevent using partial webViewCore 1461 webViewCore.destroy(); 1462 } 1463 // Remove any pending messages that might not be serviced yet. 1464 mPrivateHandler.removeCallbacksAndMessages(null); 1465 mCallbackProxy.removeCallbacksAndMessages(null); 1466 // Wake up the WebCore thread just in case it is waiting for a 1467 // JavaScript dialog. 1468 synchronized (mCallbackProxy) { 1469 mCallbackProxy.notify(); 1470 } 1471 } 1472 if (mNativeClass != 0) { 1473 nativeDestroy(); 1474 mNativeClass = 0; 1475 } 1476 } 1477 1478 /** 1479 * Enables platform notifications of data state and proxy changes. 1480 */ 1481 public static void enablePlatformNotifications() { 1482 Network.enablePlatformNotifications(); 1483 } 1484 1485 /** 1486 * If platform notifications are enabled, this should be called 1487 * from the Activity's onPause() or onStop(). 1488 */ 1489 public static void disablePlatformNotifications() { 1490 Network.disablePlatformNotifications(); 1491 } 1492 1493 /** 1494 * Sets JavaScript engine flags. 1495 * 1496 * @param flags JS engine flags in a String 1497 * 1498 * @hide pending API solidification 1499 */ 1500 public void setJsFlags(String flags) { 1501 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1502 } 1503 1504 /** 1505 * Inform WebView of the network state. This is used to set 1506 * the JavaScript property window.navigator.isOnline and 1507 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1508 * @param networkUp boolean indicating if network is available 1509 */ 1510 public void setNetworkAvailable(boolean networkUp) { 1511 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1512 networkUp ? 1 : 0, 0); 1513 } 1514 1515 /** 1516 * Inform WebView about the current network type. 1517 * {@hide} 1518 */ 1519 public void setNetworkType(String type, String subtype) { 1520 Map<String, String> map = new HashMap<String, String>(); 1521 map.put("type", type); 1522 map.put("subtype", subtype); 1523 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1524 } 1525 /** 1526 * Save the state of this WebView used in 1527 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1528 * method no longer stores the display data for this WebView. The previous 1529 * behavior could potentially leak files if {@link #restoreState} was never 1530 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1531 * and restoring the display data. 1532 * @param outState The Bundle to store the WebView state. 1533 * @return The same copy of the back/forward list used to save the state. If 1534 * saveState fails, the returned list will be null. 1535 * @see #savePicture 1536 * @see #restorePicture 1537 */ 1538 public WebBackForwardList saveState(Bundle outState) { 1539 if (outState == null) { 1540 return null; 1541 } 1542 // We grab a copy of the back/forward list because a client of WebView 1543 // may have invalidated the history list by calling clearHistory. 1544 WebBackForwardList list = copyBackForwardList(); 1545 final int currentIndex = list.getCurrentIndex(); 1546 final int size = list.getSize(); 1547 // We should fail saving the state if the list is empty or the index is 1548 // not in a valid range. 1549 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1550 return null; 1551 } 1552 outState.putInt("index", currentIndex); 1553 // FIXME: This should just be a byte[][] instead of ArrayList but 1554 // Parcel.java does not have the code to handle multi-dimensional 1555 // arrays. 1556 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1557 for (int i = 0; i < size; i++) { 1558 WebHistoryItem item = list.getItemAtIndex(i); 1559 if (null == item) { 1560 // FIXME: this shouldn't happen 1561 // need to determine how item got set to null 1562 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1563 return null; 1564 } 1565 byte[] data = item.getFlattenedData(); 1566 if (data == null) { 1567 // It would be very odd to not have any data for a given history 1568 // item. And we will fail to rebuild the history list without 1569 // flattened data. 1570 return null; 1571 } 1572 history.add(data); 1573 } 1574 outState.putSerializable("history", history); 1575 if (mCertificate != null) { 1576 outState.putBundle("certificate", 1577 SslCertificate.saveState(mCertificate)); 1578 } 1579 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1580 mZoomManager.saveZoomState(outState); 1581 return list; 1582 } 1583 1584 /** 1585 * Save the current display data to the Bundle given. Used in conjunction 1586 * with {@link #saveState}. 1587 * @param b A Bundle to store the display data. 1588 * @param dest The file to store the serialized picture data. Will be 1589 * overwritten with this WebView's picture data. 1590 * @return True if the picture was successfully saved. 1591 */ 1592 public boolean savePicture(Bundle b, final File dest) { 1593 if (dest == null || b == null) { 1594 return false; 1595 } 1596 final Picture p = capturePicture(); 1597 // Use a temporary file while writing to ensure the destination file 1598 // contains valid data. 1599 final File temp = new File(dest.getPath() + ".writing"); 1600 new Thread(new Runnable() { 1601 public void run() { 1602 FileOutputStream out = null; 1603 try { 1604 out = new FileOutputStream(temp); 1605 p.writeToStream(out); 1606 // Writing the picture succeeded, rename the temporary file 1607 // to the destination. 1608 temp.renameTo(dest); 1609 } catch (Exception e) { 1610 // too late to do anything about it. 1611 } finally { 1612 if (out != null) { 1613 try { 1614 out.close(); 1615 } catch (Exception e) { 1616 // Can't do anything about that 1617 } 1618 } 1619 temp.delete(); 1620 } 1621 } 1622 }).start(); 1623 // now update the bundle 1624 b.putInt("scrollX", mScrollX); 1625 b.putInt("scrollY", mScrollY); 1626 mZoomManager.saveZoomState(b); 1627 return true; 1628 } 1629 1630 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1631 int sx = b.getInt("scrollX", 0); 1632 int sy = b.getInt("scrollY", 0); 1633 1634 mDrawHistory = true; 1635 mHistoryPicture = p; 1636 mScrollX = sx; 1637 mScrollY = sy; 1638 mZoomManager.restoreZoomState(b); 1639 final float scale = mZoomManager.getScale(); 1640 mHistoryWidth = Math.round(p.getWidth() * scale); 1641 mHistoryHeight = Math.round(p.getHeight() * scale); 1642 1643 invalidate(); 1644 } 1645 1646 /** 1647 * Restore the display data that was save in {@link #savePicture}. Used in 1648 * conjunction with {@link #restoreState}. 1649 * @param b A Bundle containing the saved display data. 1650 * @param src The file where the picture data was stored. 1651 * @return True if the picture was successfully restored. 1652 */ 1653 public boolean restorePicture(Bundle b, File src) { 1654 if (src == null || b == null) { 1655 return false; 1656 } 1657 if (!src.exists()) { 1658 return false; 1659 } 1660 try { 1661 final FileInputStream in = new FileInputStream(src); 1662 final Bundle copy = new Bundle(b); 1663 new Thread(new Runnable() { 1664 public void run() { 1665 try { 1666 final Picture p = Picture.createFromStream(in); 1667 if (p != null) { 1668 // Post a runnable on the main thread to update the 1669 // history picture fields. 1670 mPrivateHandler.post(new Runnable() { 1671 public void run() { 1672 restoreHistoryPictureFields(p, copy); 1673 } 1674 }); 1675 } 1676 } finally { 1677 try { 1678 in.close(); 1679 } catch (Exception e) { 1680 // Nothing we can do now. 1681 } 1682 } 1683 } 1684 }).start(); 1685 } catch (FileNotFoundException e){ 1686 e.printStackTrace(); 1687 } 1688 return true; 1689 } 1690 1691 /** 1692 * Restore the state of this WebView from the given map used in 1693 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1694 * be called to restore the state of the WebView before using the object. If 1695 * it is called after the WebView has had a chance to build state (load 1696 * pages, create a back/forward list, etc.) there may be undesirable 1697 * side-effects. Please note that this method no longer restores the 1698 * display data for this WebView. See {@link #savePicture} and {@link 1699 * #restorePicture} for saving and restoring the display data. 1700 * @param inState The incoming Bundle of state. 1701 * @return The restored back/forward list or null if restoreState failed. 1702 * @see #savePicture 1703 * @see #restorePicture 1704 */ 1705 public WebBackForwardList restoreState(Bundle inState) { 1706 WebBackForwardList returnList = null; 1707 if (inState == null) { 1708 return returnList; 1709 } 1710 if (inState.containsKey("index") && inState.containsKey("history")) { 1711 mCertificate = SslCertificate.restoreState( 1712 inState.getBundle("certificate")); 1713 1714 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1715 final int index = inState.getInt("index"); 1716 // We can't use a clone of the list because we need to modify the 1717 // shared copy, so synchronize instead to prevent concurrent 1718 // modifications. 1719 synchronized (list) { 1720 final List<byte[]> history = 1721 (List<byte[]>) inState.getSerializable("history"); 1722 final int size = history.size(); 1723 // Check the index bounds so we don't crash in native code while 1724 // restoring the history index. 1725 if (index < 0 || index >= size) { 1726 return null; 1727 } 1728 for (int i = 0; i < size; i++) { 1729 byte[] data = history.remove(0); 1730 if (data == null) { 1731 // If we somehow have null data, we cannot reconstruct 1732 // the item and thus our history list cannot be rebuilt. 1733 return null; 1734 } 1735 WebHistoryItem item = new WebHistoryItem(data); 1736 list.addHistoryItem(item); 1737 } 1738 // Grab the most recent copy to return to the caller. 1739 returnList = copyBackForwardList(); 1740 // Update the copy to have the correct index. 1741 returnList.setCurrentIndex(index); 1742 } 1743 // Restore private browsing setting. 1744 if (inState.getBoolean("privateBrowsingEnabled")) { 1745 getSettings().setPrivateBrowsingEnabled(true); 1746 } 1747 mZoomManager.restoreZoomState(inState); 1748 // Remove all pending messages because we are restoring previous 1749 // state. 1750 mWebViewCore.removeMessages(); 1751 // Send a restore state message. 1752 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1753 } 1754 return returnList; 1755 } 1756 1757 /** 1758 * Load the given url with the extra headers. 1759 * @param url The url of the resource to load. 1760 * @param extraHeaders The extra headers sent with this url. This should not 1761 * include the common headers like "user-agent". If it does, it 1762 * will be replaced by the intrinsic value of the WebView. 1763 */ 1764 public void loadUrl(String url, Map<String, String> extraHeaders) { 1765 switchOutDrawHistory(); 1766 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1767 arg.mUrl = url; 1768 arg.mExtraHeaders = extraHeaders; 1769 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1770 clearHelpers(); 1771 } 1772 1773 /** 1774 * Load the given url. 1775 * @param url The url of the resource to load. 1776 */ 1777 public void loadUrl(String url) { 1778 if (url == null) { 1779 return; 1780 } 1781 loadUrl(url, null); 1782 } 1783 1784 /** 1785 * Load the url with postData using "POST" method into the WebView. If url 1786 * is not a network url, it will be loaded with {link 1787 * {@link #loadUrl(String)} instead. 1788 * 1789 * @param url The url of the resource to load. 1790 * @param postData The data will be passed to "POST" request. 1791 */ 1792 public void postUrl(String url, byte[] postData) { 1793 if (URLUtil.isNetworkUrl(url)) { 1794 switchOutDrawHistory(); 1795 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1796 arg.mUrl = url; 1797 arg.mPostData = postData; 1798 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1799 clearHelpers(); 1800 } else { 1801 loadUrl(url); 1802 } 1803 } 1804 1805 /** 1806 * Load the given data into the WebView. This will load the data into 1807 * WebView using the data: scheme. Content loaded through this mechanism 1808 * does not have the ability to load content from the network. 1809 * @param data A String of data in the given encoding. The date must 1810 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1811 * %27, %3f respectively. 1812 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1813 * @param encoding The encoding of the data. i.e. utf-8, base64 1814 */ 1815 public void loadData(String data, String mimeType, String encoding) { 1816 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1817 } 1818 1819 /** 1820 * Load the given data into the WebView, use the provided URL as the base 1821 * URL for the content. The base URL is the URL that represents the page 1822 * that is loaded through this interface. As such, it is used to resolve any 1823 * relative URLs. The historyUrl is used for the history entry. 1824 * <p> 1825 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1826 * files through "file:///android_asset/" for the sub resources is more 1827 * restricted. If you provide null or empty string as baseUrl, you won't be 1828 * able to access asset files. If the baseUrl is anything other than 1829 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1830 * sub resources. 1831 * 1832 * @param baseUrl Url to resolve relative paths with, if null defaults to 1833 * "about:blank" 1834 * @param data A String of data in the given encoding. 1835 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1836 * defaults to "text/html" 1837 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1838 * @param historyUrl URL to use as the history entry. Can be null. 1839 */ 1840 public void loadDataWithBaseURL(String baseUrl, String data, 1841 String mimeType, String encoding, String historyUrl) { 1842 1843 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1844 loadData(data, mimeType, encoding); 1845 return; 1846 } 1847 switchOutDrawHistory(); 1848 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1849 arg.mBaseUrl = baseUrl; 1850 arg.mData = data; 1851 arg.mMimeType = mimeType; 1852 arg.mEncoding = encoding; 1853 arg.mHistoryUrl = historyUrl; 1854 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1855 clearHelpers(); 1856 } 1857 1858 /** 1859 * Saves the current view as a web archive. 1860 * 1861 * @param filename The filename where the archive should be placed. 1862 */ 1863 public void saveWebArchive(String filename) { 1864 saveWebArchive(filename, false, null); 1865 } 1866 1867 /* package */ static class SaveWebArchiveMessage { 1868 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1869 mBasename = basename; 1870 mAutoname = autoname; 1871 mCallback = callback; 1872 } 1873 1874 /* package */ final String mBasename; 1875 /* package */ final boolean mAutoname; 1876 /* package */ final ValueCallback<String> mCallback; 1877 /* package */ String mResultFile; 1878 } 1879 1880 /** 1881 * Saves the current view as a web archive. 1882 * 1883 * @param basename The filename where the archive should be placed. 1884 * @param autoname If false, takes basename to be a file. If true, basename 1885 * is assumed to be a directory in which a filename will be 1886 * chosen according to the url of the current page. 1887 * @param callback Called after the web archive has been saved. The 1888 * parameter for onReceiveValue will either be the filename 1889 * under which the file was saved, or null if saving the 1890 * file failed. 1891 */ 1892 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1893 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1894 new SaveWebArchiveMessage(basename, autoname, callback)); 1895 } 1896 1897 /** 1898 * Stop the current load. 1899 */ 1900 public void stopLoading() { 1901 // TODO: should we clear all the messages in the queue before sending 1902 // STOP_LOADING? 1903 switchOutDrawHistory(); 1904 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1905 } 1906 1907 /** 1908 * Reload the current url. 1909 */ 1910 public void reload() { 1911 clearHelpers(); 1912 switchOutDrawHistory(); 1913 mWebViewCore.sendMessage(EventHub.RELOAD); 1914 } 1915 1916 /** 1917 * Return true if this WebView has a back history item. 1918 * @return True iff this WebView has a back history item. 1919 */ 1920 public boolean canGoBack() { 1921 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1922 synchronized (l) { 1923 if (l.getClearPending()) { 1924 return false; 1925 } else { 1926 return l.getCurrentIndex() > 0; 1927 } 1928 } 1929 } 1930 1931 /** 1932 * Go back in the history of this WebView. 1933 */ 1934 public void goBack() { 1935 goBackOrForward(-1); 1936 } 1937 1938 /** 1939 * Return true if this WebView has a forward history item. 1940 * @return True iff this Webview has a forward history item. 1941 */ 1942 public boolean canGoForward() { 1943 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1944 synchronized (l) { 1945 if (l.getClearPending()) { 1946 return false; 1947 } else { 1948 return l.getCurrentIndex() < l.getSize() - 1; 1949 } 1950 } 1951 } 1952 1953 /** 1954 * Go forward in the history of this WebView. 1955 */ 1956 public void goForward() { 1957 goBackOrForward(1); 1958 } 1959 1960 /** 1961 * Return true if the page can go back or forward the given 1962 * number of steps. 1963 * @param steps The negative or positive number of steps to move the 1964 * history. 1965 */ 1966 public boolean canGoBackOrForward(int steps) { 1967 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1968 synchronized (l) { 1969 if (l.getClearPending()) { 1970 return false; 1971 } else { 1972 int newIndex = l.getCurrentIndex() + steps; 1973 return newIndex >= 0 && newIndex < l.getSize(); 1974 } 1975 } 1976 } 1977 1978 /** 1979 * Go to the history item that is the number of steps away from 1980 * the current item. Steps is negative if backward and positive 1981 * if forward. 1982 * @param steps The number of steps to take back or forward in the back 1983 * forward list. 1984 */ 1985 public void goBackOrForward(int steps) { 1986 goBackOrForward(steps, false); 1987 } 1988 1989 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1990 if (steps != 0) { 1991 clearHelpers(); 1992 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1993 ignoreSnapshot ? 1 : 0); 1994 } 1995 } 1996 1997 /** 1998 * Returns true if private browsing is enabled in this WebView. 1999 */ 2000 public boolean isPrivateBrowsingEnabled() { 2001 return getSettings().isPrivateBrowsingEnabled(); 2002 } 2003 2004 private void startPrivateBrowsing() { 2005 boolean wasPrivateBrowsingEnabled = isPrivateBrowsingEnabled(); 2006 2007 getSettings().setPrivateBrowsingEnabled(true); 2008 2009 if (!wasPrivateBrowsingEnabled) { 2010 loadUrl("browser:incognito"); 2011 } 2012 } 2013 2014 private boolean extendScroll(int y) { 2015 int finalY = mScroller.getFinalY(); 2016 int newY = pinLocY(finalY + y); 2017 if (newY == finalY) return false; 2018 mScroller.setFinalY(newY); 2019 mScroller.extendDuration(computeDuration(0, y)); 2020 return true; 2021 } 2022 2023 /** 2024 * Scroll the contents of the view up by half the view size 2025 * @param top true to jump to the top of the page 2026 * @return true if the page was scrolled 2027 */ 2028 public boolean pageUp(boolean top) { 2029 if (mNativeClass == 0) { 2030 return false; 2031 } 2032 nativeClearCursor(); // start next trackball movement from page edge 2033 if (top) { 2034 // go to the top of the document 2035 return pinScrollTo(mScrollX, 0, true, 0); 2036 } 2037 // Page up 2038 int h = getHeight(); 2039 int y; 2040 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2041 y = -h + PAGE_SCROLL_OVERLAP; 2042 } else { 2043 y = -h / 2; 2044 } 2045 mUserScroll = true; 2046 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2047 : extendScroll(y); 2048 } 2049 2050 /** 2051 * Scroll the contents of the view down by half the page size 2052 * @param bottom true to jump to bottom of page 2053 * @return true if the page was scrolled 2054 */ 2055 public boolean pageDown(boolean bottom) { 2056 if (mNativeClass == 0) { 2057 return false; 2058 } 2059 nativeClearCursor(); // start next trackball movement from page edge 2060 if (bottom) { 2061 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2062 } 2063 // Page down. 2064 int h = getHeight(); 2065 int y; 2066 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2067 y = h - PAGE_SCROLL_OVERLAP; 2068 } else { 2069 y = h / 2; 2070 } 2071 mUserScroll = true; 2072 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2073 : extendScroll(y); 2074 } 2075 2076 /** 2077 * Clear the view so that onDraw() will draw nothing but white background, 2078 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2079 */ 2080 public void clearView() { 2081 mContentWidth = 0; 2082 mContentHeight = 0; 2083 setBaseLayer(0, null); 2084 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2085 } 2086 2087 /** 2088 * Return a new picture that captures the current display of the webview. 2089 * This is a copy of the display, and will be unaffected if the webview 2090 * later loads a different URL. 2091 * 2092 * @return a picture containing the current contents of the view. Note this 2093 * picture is of the entire document, and is not restricted to the 2094 * bounds of the view. 2095 */ 2096 public Picture capturePicture() { 2097 if (mNativeClass == 0) return null; 2098 Picture result = new Picture(); 2099 nativeCopyBaseContentToPicture(result); 2100 return result; 2101 } 2102 2103 /** 2104 * Return true if the browser is displaying a TextView for text input. 2105 */ 2106 private boolean inEditingMode() { 2107 return mWebTextView != null && mWebTextView.getParent() != null; 2108 } 2109 2110 /** 2111 * Remove the WebTextView. 2112 */ 2113 private void clearTextEntry() { 2114 if (inEditingMode()) { 2115 mWebTextView.remove(); 2116 } else { 2117 // The keyboard may be open with the WebView as the served view 2118 hideSoftKeyboard(); 2119 } 2120 } 2121 2122 /** 2123 * Return the current scale of the WebView 2124 * @return The current scale. 2125 */ 2126 public float getScale() { 2127 return mZoomManager.getScale(); 2128 } 2129 2130 /** 2131 * Set the initial scale for the WebView. 0 means default. If 2132 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2133 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2134 * WebView starts will this value as initial scale. 2135 * 2136 * @param scaleInPercent The initial scale in percent. 2137 */ 2138 public void setInitialScale(int scaleInPercent) { 2139 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2140 } 2141 2142 /** 2143 * Invoke the graphical zoom picker widget for this WebView. This will 2144 * result in the zoom widget appearing on the screen to control the zoom 2145 * level of this WebView. 2146 */ 2147 public void invokeZoomPicker() { 2148 if (!getSettings().supportZoom()) { 2149 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2150 return; 2151 } 2152 clearHelpers(); 2153 mZoomManager.invokeZoomPicker(); 2154 } 2155 2156 /** 2157 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2158 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2159 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2160 * anchor does not have a url or if it is a JavaScript url, the type will 2161 * be UNKNOWN_TYPE and the url has to be retrieved through 2162 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2163 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2164 * the "extra" field. A type of 2165 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2166 * a child node. If a phone number is found, the HitTestResult type is set 2167 * to PHONE_TYPE and the phone number is set in the "extra" field of 2168 * HitTestResult. If a map address is found, the HitTestResult type is set 2169 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2170 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2171 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2172 * HitTestResult type is set to UNKNOWN_TYPE. 2173 */ 2174 public HitTestResult getHitTestResult() { 2175 return hitTestResult(mInitialHitTestResult); 2176 } 2177 2178 private HitTestResult hitTestResult(HitTestResult fallback) { 2179 if (mNativeClass == 0) { 2180 return null; 2181 } 2182 2183 HitTestResult result = new HitTestResult(); 2184 if (nativeHasCursorNode()) { 2185 if (nativeCursorIsTextInput()) { 2186 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2187 } else { 2188 String text = nativeCursorText(); 2189 if (text != null) { 2190 if (text.startsWith(SCHEME_TEL)) { 2191 result.setType(HitTestResult.PHONE_TYPE); 2192 result.setExtra(text.substring(SCHEME_TEL.length())); 2193 } else if (text.startsWith(SCHEME_MAILTO)) { 2194 result.setType(HitTestResult.EMAIL_TYPE); 2195 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2196 } else if (text.startsWith(SCHEME_GEO)) { 2197 result.setType(HitTestResult.GEO_TYPE); 2198 result.setExtra(URLDecoder.decode(text 2199 .substring(SCHEME_GEO.length()))); 2200 } else if (nativeCursorIsAnchor()) { 2201 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2202 result.setExtra(text); 2203 } 2204 } 2205 } 2206 } else if (fallback != null) { 2207 /* If webkit causes a rebuild while the long press is in progress, 2208 * the cursor node may be reset, even if it is still around. This 2209 * uses the cursor node saved when the touch began. Since the 2210 * nativeImageURI below only changes the result if it is successful, 2211 * this uses the data beneath the touch if available or the original 2212 * tap data otherwise. 2213 */ 2214 Log.v(LOGTAG, "hitTestResult use fallback"); 2215 result = fallback; 2216 } 2217 int type = result.getType(); 2218 if (type == HitTestResult.UNKNOWN_TYPE 2219 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2220 // Now check to see if it is an image. 2221 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2222 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2223 String text = nativeImageURI(contentX, contentY); 2224 if (text != null) { 2225 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2226 HitTestResult.IMAGE_TYPE : 2227 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2228 result.setExtra(text); 2229 } 2230 } 2231 return result; 2232 } 2233 2234 // Called by JNI when the DOM has changed the focus. Clear the focus so 2235 // that new keys will go to the newly focused field 2236 private void domChangedFocus() { 2237 if (inEditingMode()) { 2238 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2239 } 2240 } 2241 /** 2242 * Request the anchor or image element URL at the last tapped point. 2243 * If hrefMsg is null, this method returns immediately and does not 2244 * dispatch hrefMsg to its target. If the tapped point hits an image, 2245 * an anchor, or an image in an anchor, the message associates 2246 * strings in named keys in its data. The value paired with the key 2247 * may be an empty string. 2248 * 2249 * @param hrefMsg This message will be dispatched with the result of the 2250 * request. The message data contains three keys: 2251 * - "url" returns the anchor's href attribute. 2252 * - "title" returns the anchor's text. 2253 * - "src" returns the image's src attribute. 2254 */ 2255 public void requestFocusNodeHref(Message hrefMsg) { 2256 if (hrefMsg == null) { 2257 return; 2258 } 2259 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2260 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2261 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2262 contentX, contentY, hrefMsg); 2263 } 2264 2265 /** 2266 * Request the url of the image last touched by the user. msg will be sent 2267 * to its target with a String representing the url as its object. 2268 * 2269 * @param msg This message will be dispatched with the result of the request 2270 * as the data member with "url" as key. The result can be null. 2271 */ 2272 public void requestImageRef(Message msg) { 2273 if (0 == mNativeClass) return; // client isn't initialized 2274 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2275 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2276 String ref = nativeImageURI(contentX, contentY); 2277 Bundle data = msg.getData(); 2278 data.putString("url", ref); 2279 msg.setData(data); 2280 msg.sendToTarget(); 2281 } 2282 2283 static int pinLoc(int x, int viewMax, int docMax) { 2284// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2285 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2286 // pin the short document to the top/left of the screen 2287 x = 0; 2288// Log.d(LOGTAG, "--- center " + x); 2289 } else if (x < 0) { 2290 x = 0; 2291// Log.d(LOGTAG, "--- zero"); 2292 } else if (x + viewMax > docMax) { 2293 x = docMax - viewMax; 2294// Log.d(LOGTAG, "--- pin " + x); 2295 } 2296 return x; 2297 } 2298 2299 // Expects x in view coordinates 2300 int pinLocX(int x) { 2301 if (mInOverScrollMode) return x; 2302 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2303 } 2304 2305 // Expects y in view coordinates 2306 int pinLocY(int y) { 2307 if (mInOverScrollMode) return y; 2308 return pinLoc(y, getViewHeightWithTitle(), 2309 computeRealVerticalScrollRange() + getTitleHeight()); 2310 } 2311 2312 /** 2313 * A title bar which is embedded in this WebView, and scrolls along with it 2314 * vertically, but not horizontally. 2315 */ 2316 private View mTitleBar; 2317 2318 /** 2319 * Add or remove a title bar to be embedded into the WebView, and scroll 2320 * along with it vertically, while remaining in view horizontally. Pass 2321 * null to remove the title bar from the WebView, and return to drawing 2322 * the WebView normally without translating to account for the title bar. 2323 * @hide 2324 */ 2325 public void setEmbeddedTitleBar(View v) { 2326 if (mTitleBar == v) return; 2327 if (mTitleBar != null) { 2328 removeView(mTitleBar); 2329 } 2330 if (null != v) { 2331 addView(v, new AbsoluteLayout.LayoutParams( 2332 ViewGroup.LayoutParams.MATCH_PARENT, 2333 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2334 } 2335 mTitleBar = v; 2336 } 2337 2338 /** 2339 * Given a distance in view space, convert it to content space. Note: this 2340 * does not reflect translation, just scaling, so this should not be called 2341 * with coordinates, but should be called for dimensions like width or 2342 * height. 2343 */ 2344 private int viewToContentDimension(int d) { 2345 return Math.round(d * mZoomManager.getInvScale()); 2346 } 2347 2348 /** 2349 * Given an x coordinate in view space, convert it to content space. Also 2350 * may be used for absolute heights (such as for the WebTextView's 2351 * textSize, which is unaffected by the height of the title bar). 2352 */ 2353 /*package*/ int viewToContentX(int x) { 2354 return viewToContentDimension(x); 2355 } 2356 2357 /** 2358 * Given a y coordinate in view space, convert it to content space. 2359 * Takes into account the height of the title bar if there is one 2360 * embedded into the WebView. 2361 */ 2362 /*package*/ int viewToContentY(int y) { 2363 return viewToContentDimension(y - getTitleHeight()); 2364 } 2365 2366 /** 2367 * Given a x coordinate in view space, convert it to content space. 2368 * Returns the result as a float. 2369 */ 2370 private float viewToContentXf(int x) { 2371 return x * mZoomManager.getInvScale(); 2372 } 2373 2374 /** 2375 * Given a y coordinate in view space, convert it to content space. 2376 * Takes into account the height of the title bar if there is one 2377 * embedded into the WebView. Returns the result as a float. 2378 */ 2379 private float viewToContentYf(int y) { 2380 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2381 } 2382 2383 /** 2384 * Given a distance in content space, convert it to view space. Note: this 2385 * does not reflect translation, just scaling, so this should not be called 2386 * with coordinates, but should be called for dimensions like width or 2387 * height. 2388 */ 2389 /*package*/ int contentToViewDimension(int d) { 2390 return Math.round(d * mZoomManager.getScale()); 2391 } 2392 2393 /** 2394 * Given an x coordinate in content space, convert it to view 2395 * space. 2396 */ 2397 /*package*/ int contentToViewX(int x) { 2398 return contentToViewDimension(x); 2399 } 2400 2401 /** 2402 * Given a y coordinate in content space, convert it to view 2403 * space. Takes into account the height of the title bar. 2404 */ 2405 /*package*/ int contentToViewY(int y) { 2406 return contentToViewDimension(y) + getTitleHeight(); 2407 } 2408 2409 private Rect contentToViewRect(Rect x) { 2410 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2411 contentToViewX(x.right), contentToViewY(x.bottom)); 2412 } 2413 2414 /* To invalidate a rectangle in content coordinates, we need to transform 2415 the rect into view coordinates, so we can then call invalidate(...). 2416 2417 Normally, we would just call contentToView[XY](...), which eventually 2418 calls Math.round(coordinate * mActualScale). However, for invalidates, 2419 we need to account for the slop that occurs with antialiasing. To 2420 address that, we are a little more liberal in the size of the rect that 2421 we invalidate. 2422 2423 This liberal calculation calls floor() for the top/left, and ceil() for 2424 the bottom/right coordinates. This catches the possible extra pixels of 2425 antialiasing that we might have missed with just round(). 2426 */ 2427 2428 // Called by JNI to invalidate the View, given rectangle coordinates in 2429 // content space 2430 private void viewInvalidate(int l, int t, int r, int b) { 2431 final float scale = mZoomManager.getScale(); 2432 final int dy = getTitleHeight(); 2433 invalidate((int)Math.floor(l * scale), 2434 (int)Math.floor(t * scale) + dy, 2435 (int)Math.ceil(r * scale), 2436 (int)Math.ceil(b * scale) + dy); 2437 } 2438 2439 // Called by JNI to invalidate the View after a delay, given rectangle 2440 // coordinates in content space 2441 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2442 final float scale = mZoomManager.getScale(); 2443 final int dy = getTitleHeight(); 2444 postInvalidateDelayed(delay, 2445 (int)Math.floor(l * scale), 2446 (int)Math.floor(t * scale) + dy, 2447 (int)Math.ceil(r * scale), 2448 (int)Math.ceil(b * scale) + dy); 2449 } 2450 2451 private void invalidateContentRect(Rect r) { 2452 viewInvalidate(r.left, r.top, r.right, r.bottom); 2453 } 2454 2455 // stop the scroll animation, and don't let a subsequent fling add 2456 // to the existing velocity 2457 private void abortAnimation() { 2458 mScroller.abortAnimation(); 2459 mLastVelocity = 0; 2460 } 2461 2462 /* call from webcoreview.draw(), so we're still executing in the UI thread 2463 */ 2464 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2465 2466 // premature data from webkit, ignore 2467 if ((w | h) == 0) { 2468 return; 2469 } 2470 2471 // don't abort a scroll animation if we didn't change anything 2472 if (mContentWidth != w || mContentHeight != h) { 2473 // record new dimensions 2474 mContentWidth = w; 2475 mContentHeight = h; 2476 // If history Picture is drawn, don't update scroll. They will be 2477 // updated when we get out of that mode. 2478 if (!mDrawHistory) { 2479 // repin our scroll, taking into account the new content size 2480 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2481 if (!mScroller.isFinished()) { 2482 // We are in the middle of a scroll. Repin the final scroll 2483 // position. 2484 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2485 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2486 } 2487 } 2488 } 2489 contentSizeChanged(updateLayout); 2490 } 2491 2492 // Used to avoid sending many visible rect messages. 2493 private Rect mLastVisibleRectSent; 2494 private Rect mLastGlobalRect; 2495 2496 Rect sendOurVisibleRect() { 2497 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2498 Rect rect = new Rect(); 2499 calcOurContentVisibleRect(rect); 2500 // Rect.equals() checks for null input. 2501 if (!rect.equals(mLastVisibleRectSent)) { 2502 Point pos = new Point(rect.left, rect.top); 2503 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2504 nativeMoveGeneration(), mUserScroll ? 1 : 0, pos); 2505 mLastVisibleRectSent = rect; 2506 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2507 } 2508 Rect globalRect = new Rect(); 2509 if (getGlobalVisibleRect(globalRect) 2510 && !globalRect.equals(mLastGlobalRect)) { 2511 if (DebugFlags.WEB_VIEW) { 2512 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2513 + globalRect.top + ",r=" + globalRect.right + ",b=" 2514 + globalRect.bottom); 2515 } 2516 // TODO: the global offset is only used by windowRect() 2517 // in ChromeClientAndroid ; other clients such as touch 2518 // and mouse events could return view + screen relative points. 2519 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2520 mLastGlobalRect = globalRect; 2521 } 2522 return rect; 2523 } 2524 2525 // Sets r to be the visible rectangle of our webview in view coordinates 2526 private void calcOurVisibleRect(Rect r) { 2527 Point p = new Point(); 2528 getGlobalVisibleRect(r, p); 2529 r.offset(-p.x, -p.y); 2530 } 2531 2532 // Sets r to be our visible rectangle in content coordinates 2533 private void calcOurContentVisibleRect(Rect r) { 2534 calcOurVisibleRect(r); 2535 r.left = viewToContentX(r.left); 2536 // viewToContentY will remove the total height of the title bar. Add 2537 // the visible height back in to account for the fact that if the title 2538 // bar is partially visible, the part of the visible rect which is 2539 // displaying our content is displaced by that amount. 2540 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2541 r.right = viewToContentX(r.right); 2542 r.bottom = viewToContentY(r.bottom); 2543 } 2544 2545 // Sets r to be our visible rectangle in content coordinates. We use this 2546 // method on the native side to compute the position of the fixed layers. 2547 // Uses floating coordinates (necessary to correctly place elements when 2548 // the scale factor is not 1) 2549 private void calcOurContentVisibleRectF(RectF r) { 2550 Rect ri = new Rect(0,0,0,0); 2551 calcOurVisibleRect(ri); 2552 r.left = viewToContentXf(ri.left); 2553 // viewToContentY will remove the total height of the title bar. Add 2554 // the visible height back in to account for the fact that if the title 2555 // bar is partially visible, the part of the visible rect which is 2556 // displaying our content is displaced by that amount. 2557 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2558 r.right = viewToContentXf(ri.right); 2559 r.bottom = viewToContentYf(ri.bottom); 2560 } 2561 2562 static class ViewSizeData { 2563 int mWidth; 2564 int mHeight; 2565 int mTextWrapWidth; 2566 int mAnchorX; 2567 int mAnchorY; 2568 float mScale; 2569 boolean mIgnoreHeight; 2570 } 2571 2572 /** 2573 * Compute unzoomed width and height, and if they differ from the last 2574 * values we sent, send them to webkit (to be used as new viewport) 2575 * 2576 * @param force ensures that the message is sent to webkit even if the width 2577 * or height has not changed since the last message 2578 * 2579 * @return true if new values were sent 2580 */ 2581 boolean sendViewSizeZoom(boolean force) { 2582 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2583 2584 int viewWidth = getViewWidth(); 2585 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2586 int newHeight = Math.round((getViewHeightWithTitle() - getTitleHeight()) * mZoomManager.getInvScale()); 2587 /* 2588 * Because the native side may have already done a layout before the 2589 * View system was able to measure us, we have to send a height of 0 to 2590 * remove excess whitespace when we grow our width. This will trigger a 2591 * layout and a change in content size. This content size change will 2592 * mean that contentSizeChanged will either call this method directly or 2593 * indirectly from onSizeChanged. 2594 */ 2595 if (newWidth > mLastWidthSent && mWrapContent) { 2596 newHeight = 0; 2597 } 2598 // Avoid sending another message if the dimensions have not changed. 2599 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force) { 2600 ViewSizeData data = new ViewSizeData(); 2601 data.mWidth = newWidth; 2602 data.mHeight = newHeight; 2603 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2604 data.mScale = mZoomManager.getScale(); 2605 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2606 && !mHeightCanMeasure; 2607 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2608 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2609 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2610 mLastWidthSent = newWidth; 2611 mLastHeightSent = newHeight; 2612 mZoomManager.clearDocumentAnchor(); 2613 return true; 2614 } 2615 return false; 2616 } 2617 2618 private int computeRealHorizontalScrollRange() { 2619 if (mDrawHistory) { 2620 return mHistoryWidth; 2621 } else { 2622 // to avoid rounding error caused unnecessary scrollbar, use floor 2623 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2624 } 2625 } 2626 2627 @Override 2628 protected int computeHorizontalScrollRange() { 2629 int range = computeRealHorizontalScrollRange(); 2630 2631 // Adjust reported range if overscrolled to compress the scroll bars 2632 final int scrollX = mScrollX; 2633 final int overscrollRight = computeMaxScrollX(); 2634 if (scrollX < 0) { 2635 range -= scrollX; 2636 } else if (scrollX > overscrollRight) { 2637 range += scrollX - overscrollRight; 2638 } 2639 2640 return range; 2641 } 2642 2643 @Override 2644 protected int computeHorizontalScrollOffset() { 2645 return Math.max(mScrollX, 0); 2646 } 2647 2648 private int computeRealVerticalScrollRange() { 2649 if (mDrawHistory) { 2650 return mHistoryHeight; 2651 } else { 2652 // to avoid rounding error caused unnecessary scrollbar, use floor 2653 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2654 } 2655 } 2656 2657 @Override 2658 protected int computeVerticalScrollRange() { 2659 int range = computeRealVerticalScrollRange(); 2660 2661 // Adjust reported range if overscrolled to compress the scroll bars 2662 final int scrollY = mScrollY; 2663 final int overscrollBottom = computeMaxScrollY(); 2664 if (scrollY < 0) { 2665 range -= scrollY; 2666 } else if (scrollY > overscrollBottom) { 2667 range += scrollY - overscrollBottom; 2668 } 2669 2670 return range; 2671 } 2672 2673 @Override 2674 protected int computeVerticalScrollOffset() { 2675 return Math.max(mScrollY - getTitleHeight(), 0); 2676 } 2677 2678 @Override 2679 protected int computeVerticalScrollExtent() { 2680 return getViewHeight(); 2681 } 2682 2683 /** @hide */ 2684 @Override 2685 protected void onDrawVerticalScrollBar(Canvas canvas, 2686 Drawable scrollBar, 2687 int l, int t, int r, int b) { 2688 if (mScrollY < 0) { 2689 t -= mScrollY; 2690 } 2691 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2692 scrollBar.draw(canvas); 2693 } 2694 2695 @Override 2696 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2697 boolean clampedY) { 2698 // Special-case layer scrolling so that we do not trigger normal scroll 2699 // updating. 2700 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2701 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2702 mScrollingLayerRect.left = scrollX; 2703 mScrollingLayerRect.top = scrollY; 2704 invalidate(); 2705 return; 2706 } 2707 mInOverScrollMode = false; 2708 int maxX = computeMaxScrollX(); 2709 int maxY = computeMaxScrollY(); 2710 if (maxX == 0) { 2711 // do not over scroll x if the page just fits the screen 2712 scrollX = pinLocX(scrollX); 2713 } else if (scrollX < 0 || scrollX > maxX) { 2714 mInOverScrollMode = true; 2715 } 2716 if (scrollY < 0 || scrollY > maxY) { 2717 mInOverScrollMode = true; 2718 } 2719 2720 int oldX = mScrollX; 2721 int oldY = mScrollY; 2722 2723 super.scrollTo(scrollX, scrollY); 2724 2725 if (mOverScrollGlow != null) { 2726 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2727 } 2728 } 2729 2730 /** 2731 * Get the url for the current page. This is not always the same as the url 2732 * passed to WebViewClient.onPageStarted because although the load for 2733 * that url has begun, the current page may not have changed. 2734 * @return The url for the current page. 2735 */ 2736 public String getUrl() { 2737 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2738 return h != null ? h.getUrl() : null; 2739 } 2740 2741 /** 2742 * Get the original url for the current page. This is not always the same 2743 * as the url passed to WebViewClient.onPageStarted because although the 2744 * load for that url has begun, the current page may not have changed. 2745 * Also, there may have been redirects resulting in a different url to that 2746 * originally requested. 2747 * @return The url that was originally requested for the current page. 2748 */ 2749 public String getOriginalUrl() { 2750 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2751 return h != null ? h.getOriginalUrl() : null; 2752 } 2753 2754 /** 2755 * Get the title for the current page. This is the title of the current page 2756 * until WebViewClient.onReceivedTitle is called. 2757 * @return The title for the current page. 2758 */ 2759 public String getTitle() { 2760 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2761 return h != null ? h.getTitle() : null; 2762 } 2763 2764 /** 2765 * Get the favicon for the current page. This is the favicon of the current 2766 * page until WebViewClient.onReceivedIcon is called. 2767 * @return The favicon for the current page. 2768 */ 2769 public Bitmap getFavicon() { 2770 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2771 return h != null ? h.getFavicon() : null; 2772 } 2773 2774 /** 2775 * Get the touch icon url for the apple-touch-icon <link> element, or 2776 * a URL on this site's server pointing to the standard location of a 2777 * touch icon. 2778 * @hide 2779 */ 2780 public String getTouchIconUrl() { 2781 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2782 return h != null ? h.getTouchIconUrl() : null; 2783 } 2784 2785 /** 2786 * Get the progress for the current page. 2787 * @return The progress for the current page between 0 and 100. 2788 */ 2789 public int getProgress() { 2790 return mCallbackProxy.getProgress(); 2791 } 2792 2793 /** 2794 * @return the height of the HTML content. 2795 */ 2796 public int getContentHeight() { 2797 return mContentHeight; 2798 } 2799 2800 /** 2801 * @return the width of the HTML content. 2802 * @hide 2803 */ 2804 public int getContentWidth() { 2805 return mContentWidth; 2806 } 2807 2808 /** 2809 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2810 * is a global requests, not restricted to just this webview. This can be 2811 * useful if the application has been paused. 2812 */ 2813 public void pauseTimers() { 2814 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2815 } 2816 2817 /** 2818 * Resume all layout, parsing, and JavaScript timers for all webviews. 2819 * This will resume dispatching all timers. 2820 */ 2821 public void resumeTimers() { 2822 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2823 } 2824 2825 /** 2826 * Call this to pause any extra processing associated with this WebView and 2827 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2828 * is taken offscreen, this could be called to reduce unnecessary CPU or 2829 * network traffic. When the WebView is again "active", call onResume(). 2830 * 2831 * Note that this differs from pauseTimers(), which affects all WebViews. 2832 */ 2833 public void onPause() { 2834 if (!mIsPaused) { 2835 mIsPaused = true; 2836 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2837 } 2838 } 2839 2840 /** 2841 * Call this to resume a WebView after a previous call to onPause(). 2842 */ 2843 public void onResume() { 2844 if (mIsPaused) { 2845 mIsPaused = false; 2846 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2847 } 2848 } 2849 2850 /** 2851 * Returns true if the view is paused, meaning onPause() was called. Calling 2852 * onResume() sets the paused state back to false. 2853 * @hide 2854 */ 2855 public boolean isPaused() { 2856 return mIsPaused; 2857 } 2858 2859 /** 2860 * Call this to inform the view that memory is low so that it can 2861 * free any available memory. 2862 */ 2863 public void freeMemory() { 2864 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2865 } 2866 2867 /** 2868 * Clear the resource cache. Note that the cache is per-application, so 2869 * this will clear the cache for all WebViews used. 2870 * 2871 * @param includeDiskFiles If false, only the RAM cache is cleared. 2872 */ 2873 public void clearCache(boolean includeDiskFiles) { 2874 // Note: this really needs to be a static method as it clears cache for all 2875 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2876 // we can't make this static. 2877 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2878 includeDiskFiles ? 1 : 0, 0); 2879 } 2880 2881 /** 2882 * Make sure that clearing the form data removes the adapter from the 2883 * currently focused textfield if there is one. 2884 */ 2885 public void clearFormData() { 2886 if (inEditingMode()) { 2887 AutoCompleteAdapter adapter = null; 2888 mWebTextView.setAdapterCustom(adapter); 2889 } 2890 } 2891 2892 /** 2893 * Tell the WebView to clear its internal back/forward list. 2894 */ 2895 public void clearHistory() { 2896 mCallbackProxy.getBackForwardList().setClearPending(); 2897 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2898 } 2899 2900 /** 2901 * Clear the SSL preferences table stored in response to proceeding with SSL 2902 * certificate errors. 2903 */ 2904 public void clearSslPreferences() { 2905 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2906 } 2907 2908 /** 2909 * Return the WebBackForwardList for this WebView. This contains the 2910 * back/forward list for use in querying each item in the history stack. 2911 * This is a copy of the private WebBackForwardList so it contains only a 2912 * snapshot of the current state. Multiple calls to this method may return 2913 * different objects. The object returned from this method will not be 2914 * updated to reflect any new state. 2915 */ 2916 public WebBackForwardList copyBackForwardList() { 2917 return mCallbackProxy.getBackForwardList().clone(); 2918 } 2919 2920 /* 2921 * Highlight and scroll to the next occurance of String in findAll. 2922 * Wraps the page infinitely, and scrolls. Must be called after 2923 * calling findAll. 2924 * 2925 * @param forward Direction to search. 2926 */ 2927 public void findNext(boolean forward) { 2928 if (0 == mNativeClass) return; // client isn't initialized 2929 nativeFindNext(forward); 2930 } 2931 2932 /* 2933 * Find all instances of find on the page and highlight them. 2934 * @param find String to find. 2935 * @return int The number of occurances of the String "find" 2936 * that were found. 2937 */ 2938 public int findAll(String find) { 2939 if (0 == mNativeClass) return 0; // client isn't initialized 2940 int result = find != null ? nativeFindAll(find.toLowerCase(), 2941 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 2942 invalidate(); 2943 mLastFind = find; 2944 return result; 2945 } 2946 2947 /** 2948 * Start an ActionMode for finding text in this WebView. 2949 * @param text If non-null, will be the initial text to search for. 2950 * Otherwise, the last String searched for in this WebView will 2951 * be used to start. 2952 * @param showIme If true, show the IME, assuming the user will begin typing. 2953 * If false and text is non-null, perform a find all. 2954 * @return boolean True if the find dialog is shown, false otherwise. 2955 */ 2956 public boolean showFindDialog(String text, boolean showIme) { 2957 FindActionModeCallback callback = new FindActionModeCallback(mContext); 2958 if (startActionMode(callback) == null) { 2959 // Could not start the action mode, so end Find on page 2960 return false; 2961 } 2962 mFindCallback = callback; 2963 setFindIsUp(true); 2964 mFindCallback.setWebView(this); 2965 if (showIme) { 2966 mFindCallback.showSoftInput(); 2967 } else if (text != null) { 2968 mFindCallback.setText(text); 2969 mFindCallback.findAll(); 2970 return true; 2971 } 2972 if (text == null) { 2973 text = mLastFind; 2974 } 2975 if (text != null) { 2976 mFindCallback.setText(text); 2977 } 2978 return true; 2979 } 2980 2981 /** 2982 * Keep track of the find callback so that we can remove its titlebar if 2983 * necessary. 2984 */ 2985 private FindActionModeCallback mFindCallback; 2986 2987 /** 2988 * Toggle whether the find dialog is showing, for both native and Java. 2989 */ 2990 private void setFindIsUp(boolean isUp) { 2991 mFindIsUp = isUp; 2992 if (0 == mNativeClass) return; // client isn't initialized 2993 nativeSetFindIsUp(isUp); 2994 } 2995 2996 /** 2997 * Return the index of the currently highlighted match. 2998 */ 2999 int findIndex() { 3000 if (0 == mNativeClass) return -1; 3001 return nativeFindIndex(); 3002 } 3003 3004 // Used to know whether the find dialog is open. Affects whether 3005 // or not we draw the highlights for matches. 3006 private boolean mFindIsUp; 3007 3008 // Keep track of the last string sent, so we can search again when find is 3009 // reopened. 3010 private String mLastFind; 3011 3012 /** 3013 * Return the first substring consisting of the address of a physical 3014 * location. Currently, only addresses in the United States are detected, 3015 * and consist of: 3016 * - a house number 3017 * - a street name 3018 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3019 * - a city name 3020 * - a state or territory, either spelled out or two-letter abbr. 3021 * - an optional 5 digit or 9 digit zip code. 3022 * 3023 * All names must be correctly capitalized, and the zip code, if present, 3024 * must be valid for the state. The street type must be a standard USPS 3025 * spelling or abbreviation. The state or territory must also be spelled 3026 * or abbreviated using USPS standards. The house number may not exceed 3027 * five digits. 3028 * @param addr The string to search for addresses. 3029 * 3030 * @return the address, or if no address is found, return null. 3031 */ 3032 public static String findAddress(String addr) { 3033 return findAddress(addr, false); 3034 } 3035 3036 /** 3037 * @hide 3038 * Return the first substring consisting of the address of a physical 3039 * location. Currently, only addresses in the United States are detected, 3040 * and consist of: 3041 * - a house number 3042 * - a street name 3043 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3044 * - a city name 3045 * - a state or territory, either spelled out or two-letter abbr. 3046 * - an optional 5 digit or 9 digit zip code. 3047 * 3048 * Names are optionally capitalized, and the zip code, if present, 3049 * must be valid for the state. The street type must be a standard USPS 3050 * spelling or abbreviation. The state or territory must also be spelled 3051 * or abbreviated using USPS standards. The house number may not exceed 3052 * five digits. 3053 * @param addr The string to search for addresses. 3054 * @param caseInsensitive addr Set to true to make search ignore case. 3055 * 3056 * @return the address, or if no address is found, return null. 3057 */ 3058 public static String findAddress(String addr, boolean caseInsensitive) { 3059 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3060 } 3061 3062 /* 3063 * Clear the highlighting surrounding text matches created by findAll. 3064 */ 3065 public void clearMatches() { 3066 if (mNativeClass == 0) 3067 return; 3068 nativeSetFindIsEmpty(); 3069 invalidate(); 3070 } 3071 3072 /** 3073 * Called when the find ActionMode ends. 3074 */ 3075 void notifyFindDialogDismissed() { 3076 mFindCallback = null; 3077 if (mWebViewCore == null) { 3078 return; 3079 } 3080 clearMatches(); 3081 setFindIsUp(false); 3082 // Now that the dialog has been removed, ensure that we scroll to a 3083 // location that is not beyond the end of the page. 3084 pinScrollTo(mScrollX, mScrollY, false, 0); 3085 invalidate(); 3086 } 3087 3088 /** 3089 * Query the document to see if it contains any image references. The 3090 * message object will be dispatched with arg1 being set to 1 if images 3091 * were found and 0 if the document does not reference any images. 3092 * @param response The message that will be dispatched with the result. 3093 */ 3094 public void documentHasImages(Message response) { 3095 if (response == null) { 3096 return; 3097 } 3098 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3099 } 3100 3101 /** 3102 * Request the scroller to abort any ongoing animation 3103 * 3104 * @hide 3105 */ 3106 public void stopScroll() { 3107 mScroller.forceFinished(true); 3108 mLastVelocity = 0; 3109 } 3110 3111 @Override 3112 public void computeScroll() { 3113 if (mScroller.computeScrollOffset()) { 3114 int oldX = mScrollX; 3115 int oldY = mScrollY; 3116 int x = mScroller.getCurrX(); 3117 int y = mScroller.getCurrY(); 3118 invalidate(); // So we draw again 3119 3120 if (!mScroller.isFinished()) { 3121 int rangeX = computeMaxScrollX(); 3122 int rangeY = computeMaxScrollY(); 3123 int overflingDistance = mOverflingDistance; 3124 3125 // Use the layer's scroll data if needed. 3126 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3127 oldX = mScrollingLayerRect.left; 3128 oldY = mScrollingLayerRect.top; 3129 rangeX = mScrollingLayerRect.right; 3130 rangeY = mScrollingLayerRect.bottom; 3131 // No overscrolling for layers. 3132 overflingDistance = 0; 3133 } 3134 3135 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3136 rangeX, rangeY, 3137 overflingDistance, overflingDistance, false); 3138 3139 if (mOverScrollGlow != null) { 3140 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3141 } 3142 } else { 3143 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3144 mScrollX = x; 3145 mScrollY = y; 3146 } else { 3147 // Update the layer position instead of WebView. 3148 nativeScrollLayer(mScrollingLayer, x, y); 3149 mScrollingLayerRect.left = x; 3150 mScrollingLayerRect.top = y; 3151 } 3152 abortAnimation(); 3153 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3154 WebViewCore.resumePriority(); 3155 if (!mSelectingText) { 3156 WebViewCore.resumeUpdatePicture(mWebViewCore); 3157 } 3158 } 3159 } else { 3160 super.computeScroll(); 3161 } 3162 } 3163 3164 private static int computeDuration(int dx, int dy) { 3165 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3166 int duration = distance * 1000 / STD_SPEED; 3167 return Math.min(duration, MAX_DURATION); 3168 } 3169 3170 // helper to pin the scrollBy parameters (already in view coordinates) 3171 // returns true if the scroll was changed 3172 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3173 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3174 } 3175 // helper to pin the scrollTo parameters (already in view coordinates) 3176 // returns true if the scroll was changed 3177 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3178 x = pinLocX(x); 3179 y = pinLocY(y); 3180 int dx = x - mScrollX; 3181 int dy = y - mScrollY; 3182 3183 if ((dx | dy) == 0) { 3184 return false; 3185 } 3186 abortAnimation(); 3187 if (animate) { 3188 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3189 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3190 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3191 awakenScrollBars(mScroller.getDuration()); 3192 invalidate(); 3193 } else { 3194 scrollTo(x, y); 3195 } 3196 return true; 3197 } 3198 3199 // Scale from content to view coordinates, and pin. 3200 // Also called by jni webview.cpp 3201 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3202 if (mDrawHistory) { 3203 // disallow WebView to change the scroll position as History Picture 3204 // is used in the view system. 3205 // TODO: as we switchOutDrawHistory when trackball or navigation 3206 // keys are hit, this should be safe. Right? 3207 return false; 3208 } 3209 cx = contentToViewDimension(cx); 3210 cy = contentToViewDimension(cy); 3211 if (mHeightCanMeasure) { 3212 // move our visible rect according to scroll request 3213 if (cy != 0) { 3214 Rect tempRect = new Rect(); 3215 calcOurVisibleRect(tempRect); 3216 tempRect.offset(cx, cy); 3217 requestRectangleOnScreen(tempRect); 3218 } 3219 // FIXME: We scroll horizontally no matter what because currently 3220 // ScrollView and ListView will not scroll horizontally. 3221 // FIXME: Why do we only scroll horizontally if there is no 3222 // vertical scroll? 3223// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3224 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3225 } else { 3226 return pinScrollBy(cx, cy, animate, 0); 3227 } 3228 } 3229 3230 /** 3231 * Called by CallbackProxy when the page starts loading. 3232 * @param url The URL of the page which has started loading. 3233 */ 3234 /* package */ void onPageStarted(String url) { 3235 // every time we start a new page, we want to reset the 3236 // WebView certificate: if the new site is secure, we 3237 // will reload it and get a new certificate set; 3238 // if the new site is not secure, the certificate must be 3239 // null, and that will be the case 3240 setCertificate(null); 3241 3242 // reset the flag since we set to true in if need after 3243 // loading is see onPageFinished(Url) 3244 mAccessibilityScriptInjected = false; 3245 } 3246 3247 /** 3248 * Called by CallbackProxy when the page finishes loading. 3249 * @param url The URL of the page which has finished loading. 3250 */ 3251 /* package */ void onPageFinished(String url) { 3252 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3253 // If the user is now on a different page, or has scrolled the page 3254 // past the point where the title bar is offscreen, ignore the 3255 // scroll request. 3256 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3257 && mScrollX == 0 && mScrollY == 0) { 3258 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3259 SLIDE_TITLE_DURATION); 3260 } 3261 mPageThatNeedsToSlideTitleBarOffScreen = null; 3262 } 3263 3264 injectAccessibilityForUrl(url); 3265 } 3266 3267 /** 3268 * This method injects accessibility in the loaded document if accessibility 3269 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3270 * If no URL specific script is found or JavaScript is disabled we fallback to 3271 * the default {@link AccessibilityInjector} implementation. 3272 * </p> 3273 * If the URL has the "axs" paramter set to 1 it has already done the 3274 * script injection so we do nothing. If the parameter is set to 0 3275 * the URL opts out accessibility script injection so we fall back to 3276 * the default {@link AccessibilityInjector}. 3277 * </p> 3278 * Note: If the user has not opted-in the accessibility script injection no scripts 3279 * are injected rather the default {@link AccessibilityInjector} implementation 3280 * is used. 3281 * 3282 * @param url The URL loaded by this {@link WebView}. 3283 */ 3284 private void injectAccessibilityForUrl(String url) { 3285 if (mWebViewCore == null) { 3286 return; 3287 } 3288 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3289 3290 if (!accessibilityManager.isEnabled()) { 3291 // it is possible that accessibility was turned off between reloads 3292 ensureAccessibilityScriptInjectorInstance(false); 3293 return; 3294 } 3295 3296 if (!getSettings().getJavaScriptEnabled()) { 3297 // no JS so we fallback to the basic buil-in support 3298 ensureAccessibilityScriptInjectorInstance(true); 3299 return; 3300 } 3301 3302 // check the URL "axs" parameter to choose appropriate action 3303 int axsParameterValue = getAxsUrlParameterValue(url); 3304 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3305 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3306 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3307 if (onDeviceScriptInjectionEnabled) { 3308 ensureAccessibilityScriptInjectorInstance(false); 3309 // neither script injected nor script injection opted out => we inject 3310 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3311 // TODO: Set this flag after successfull script injection. Maybe upon injection 3312 // the chooser should update the meta tag and we check it to declare success 3313 mAccessibilityScriptInjected = true; 3314 } else { 3315 // injection disabled so we fallback to the basic built-in support 3316 ensureAccessibilityScriptInjectorInstance(true); 3317 } 3318 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3319 // injection opted out so we fallback to the basic buil-in support 3320 ensureAccessibilityScriptInjectorInstance(true); 3321 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3322 ensureAccessibilityScriptInjectorInstance(false); 3323 // the URL provides accessibility but we still need to add our generic script 3324 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3325 } else { 3326 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3327 } 3328 } 3329 3330 /** 3331 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3332 * 3333 * @param present True to ensure an insance, false to ensure no instance. 3334 */ 3335 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3336 if (present) { 3337 if (mAccessibilityInjector == null) { 3338 mAccessibilityInjector = new AccessibilityInjector(this); 3339 } 3340 } else { 3341 mAccessibilityInjector = null; 3342 } 3343 } 3344 3345 /** 3346 * Gets the "axs" URL parameter value. 3347 * 3348 * @param url A url to fetch the paramter from. 3349 * @return The parameter value if such, -1 otherwise. 3350 */ 3351 private int getAxsUrlParameterValue(String url) { 3352 if (mMatchAxsUrlParameterPattern == null) { 3353 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3354 } 3355 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3356 if (matcher.find()) { 3357 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3358 return Integer.parseInt(keyValuePair.split("=")[1]); 3359 } 3360 return -1; 3361 } 3362 3363 /** 3364 * The URL of a page that sent a message to scroll the title bar off screen. 3365 * 3366 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3367 * title bar off the screen. Sometimes, the scroll position is set before 3368 * the page finishes loading. Rather than scrolling while the page is still 3369 * loading, keep track of the URL and new scroll position so we can perform 3370 * the scroll once the page finishes loading. 3371 */ 3372 private String mPageThatNeedsToSlideTitleBarOffScreen; 3373 3374 /** 3375 * The destination Y scroll position to be used when the page finishes 3376 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3377 */ 3378 private int mYDistanceToSlideTitleOffScreen; 3379 3380 // scale from content to view coordinates, and pin 3381 // return true if pin caused the final x/y different than the request cx/cy, 3382 // and a future scroll may reach the request cx/cy after our size has 3383 // changed 3384 // return false if the view scroll to the exact position as it is requested, 3385 // where negative numbers are taken to mean 0 3386 private boolean setContentScrollTo(int cx, int cy) { 3387 if (mDrawHistory) { 3388 // disallow WebView to change the scroll position as History Picture 3389 // is used in the view system. 3390 // One known case where this is called is that WebCore tries to 3391 // restore the scroll position. As history Picture already uses the 3392 // saved scroll position, it is ok to skip this. 3393 return false; 3394 } 3395 int vx; 3396 int vy; 3397 if ((cx | cy) == 0) { 3398 // If the page is being scrolled to (0,0), do not add in the title 3399 // bar's height, and simply scroll to (0,0). (The only other work 3400 // in contentToView_ is to multiply, so this would not change 0.) 3401 vx = 0; 3402 vy = 0; 3403 } else { 3404 vx = contentToViewX(cx); 3405 vy = contentToViewY(cy); 3406 } 3407// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3408// vx + " " + vy + "]"); 3409 // Some mobile sites attempt to scroll the title bar off the page by 3410 // scrolling to (0,1). If we are at the top left corner of the 3411 // page, assume this is an attempt to scroll off the title bar, and 3412 // animate the title bar off screen slowly enough that the user can see 3413 // it. 3414 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3415 && mTitleBar != null) { 3416 // FIXME: 100 should be defined somewhere as our max progress. 3417 if (getProgress() < 100) { 3418 // Wait to scroll the title bar off screen until the page has 3419 // finished loading. Keep track of the URL and the destination 3420 // Y position 3421 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3422 mYDistanceToSlideTitleOffScreen = vy; 3423 } else { 3424 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3425 } 3426 // Since we are animating, we have not yet reached the desired 3427 // scroll position. Do not return true to request another attempt 3428 return false; 3429 } 3430 pinScrollTo(vx, vy, false, 0); 3431 // If the request was to scroll to a negative coordinate, treat it as if 3432 // it was a request to scroll to 0 3433 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3434 return true; 3435 } else { 3436 return false; 3437 } 3438 } 3439 3440 // scale from content to view coordinates, and pin 3441 private void spawnContentScrollTo(int cx, int cy) { 3442 if (mDrawHistory) { 3443 // disallow WebView to change the scroll position as History Picture 3444 // is used in the view system. 3445 return; 3446 } 3447 int vx = contentToViewX(cx); 3448 int vy = contentToViewY(cy); 3449 pinScrollTo(vx, vy, true, 0); 3450 } 3451 3452 /** 3453 * These are from webkit, and are in content coordinate system (unzoomed) 3454 */ 3455 private void contentSizeChanged(boolean updateLayout) { 3456 // suppress 0,0 since we usually see real dimensions soon after 3457 // this avoids drawing the prev content in a funny place. If we find a 3458 // way to consolidate these notifications, this check may become 3459 // obsolete 3460 if ((mContentWidth | mContentHeight) == 0) { 3461 return; 3462 } 3463 3464 if (mHeightCanMeasure) { 3465 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3466 || updateLayout) { 3467 requestLayout(); 3468 } 3469 } else if (mWidthCanMeasure) { 3470 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3471 || updateLayout) { 3472 requestLayout(); 3473 } 3474 } else { 3475 // If we don't request a layout, try to send our view size to the 3476 // native side to ensure that WebCore has the correct dimensions. 3477 sendViewSizeZoom(false); 3478 } 3479 } 3480 3481 /** 3482 * Set the WebViewClient that will receive various notifications and 3483 * requests. This will replace the current handler. 3484 * @param client An implementation of WebViewClient. 3485 */ 3486 public void setWebViewClient(WebViewClient client) { 3487 mCallbackProxy.setWebViewClient(client); 3488 } 3489 3490 /** 3491 * Gets the WebViewClient 3492 * @return the current WebViewClient instance. 3493 * 3494 *@hide pending API council approval. 3495 */ 3496 public WebViewClient getWebViewClient() { 3497 return mCallbackProxy.getWebViewClient(); 3498 } 3499 3500 /** 3501 * Register the interface to be used when content can not be handled by 3502 * the rendering engine, and should be downloaded instead. This will replace 3503 * the current handler. 3504 * @param listener An implementation of DownloadListener. 3505 */ 3506 public void setDownloadListener(DownloadListener listener) { 3507 mCallbackProxy.setDownloadListener(listener); 3508 } 3509 3510 /** 3511 * Set the chrome handler. This is an implementation of WebChromeClient for 3512 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3513 * This will replace the current handler. 3514 * @param client An implementation of WebChromeClient. 3515 */ 3516 public void setWebChromeClient(WebChromeClient client) { 3517 mCallbackProxy.setWebChromeClient(client); 3518 } 3519 3520 /** 3521 * Gets the chrome handler. 3522 * @return the current WebChromeClient instance. 3523 * 3524 * @hide API council approval. 3525 */ 3526 public WebChromeClient getWebChromeClient() { 3527 return mCallbackProxy.getWebChromeClient(); 3528 } 3529 3530 /** 3531 * Set the back/forward list client. This is an implementation of 3532 * WebBackForwardListClient for handling new items and changes in the 3533 * history index. 3534 * @param client An implementation of WebBackForwardListClient. 3535 * {@hide} 3536 */ 3537 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3538 mCallbackProxy.setWebBackForwardListClient(client); 3539 } 3540 3541 /** 3542 * Gets the WebBackForwardListClient. 3543 * {@hide} 3544 */ 3545 public WebBackForwardListClient getWebBackForwardListClient() { 3546 return mCallbackProxy.getWebBackForwardListClient(); 3547 } 3548 3549 /** 3550 * Set the Picture listener. This is an interface used to receive 3551 * notifications of a new Picture. 3552 * @param listener An implementation of WebView.PictureListener. 3553 */ 3554 public void setPictureListener(PictureListener listener) { 3555 mPictureListener = listener; 3556 } 3557 3558 /** 3559 * {@hide} 3560 */ 3561 /* FIXME: Debug only! Remove for SDK! */ 3562 public void externalRepresentation(Message callback) { 3563 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3564 } 3565 3566 /** 3567 * {@hide} 3568 */ 3569 /* FIXME: Debug only! Remove for SDK! */ 3570 public void documentAsText(Message callback) { 3571 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3572 } 3573 3574 /** 3575 * Use this function to bind an object to JavaScript so that the 3576 * methods can be accessed from JavaScript. 3577 * <p><strong>IMPORTANT:</strong> 3578 * <ul> 3579 * <li> Using addJavascriptInterface() allows JavaScript to control your 3580 * application. This can be a very useful feature or a dangerous security 3581 * issue. When the HTML in the WebView is untrustworthy (for example, part 3582 * or all of the HTML is provided by some person or process), then an 3583 * attacker could inject HTML that will execute your code and possibly any 3584 * code of the attacker's choosing.<br> 3585 * Do not use addJavascriptInterface() unless all of the HTML in this 3586 * WebView was written by you.</li> 3587 * <li> The Java object that is bound runs in another thread and not in 3588 * the thread that it was constructed in.</li> 3589 * </ul></p> 3590 * @param obj The class instance to bind to JavaScript, null instances are 3591 * ignored. 3592 * @param interfaceName The name to used to expose the instance in 3593 * JavaScript. 3594 */ 3595 public void addJavascriptInterface(Object obj, String interfaceName) { 3596 if (obj == null) { 3597 return; 3598 } 3599 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3600 arg.mObject = obj; 3601 arg.mInterfaceName = interfaceName; 3602 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3603 } 3604 3605 /** 3606 * Removes a previously added JavaScript interface with the given name. 3607 * @param interfaceName The name of the interface to remove. 3608 */ 3609 public void removeJavascriptInterface(String interfaceName) { 3610 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3611 arg.mInterfaceName = interfaceName; 3612 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3613 } 3614 3615 /** 3616 * Return the WebSettings object used to control the settings for this 3617 * WebView. 3618 * @return A WebSettings object that can be used to control this WebView's 3619 * settings. 3620 */ 3621 public WebSettings getSettings() { 3622 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3623 } 3624 3625 /** 3626 * Return the list of currently loaded plugins. 3627 * @return The list of currently loaded plugins. 3628 * 3629 * @deprecated This was used for Gears, which has been deprecated. 3630 */ 3631 @Deprecated 3632 public static synchronized PluginList getPluginList() { 3633 return new PluginList(); 3634 } 3635 3636 /** 3637 * @deprecated This was used for Gears, which has been deprecated. 3638 */ 3639 @Deprecated 3640 public void refreshPlugins(boolean reloadOpenPages) { } 3641 3642 //------------------------------------------------------------------------- 3643 // Override View methods 3644 //------------------------------------------------------------------------- 3645 3646 @Override 3647 protected void finalize() throws Throwable { 3648 try { 3649 destroy(); 3650 } finally { 3651 super.finalize(); 3652 } 3653 } 3654 3655 @Override 3656 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3657 if (child == mTitleBar) { 3658 // When drawing the title bar, move it horizontally to always show 3659 // at the top of the WebView. 3660 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3661 int newTop = Math.min(0, mScrollY); 3662 mTitleBar.setBottom(newTop + getTitleHeight()); 3663 mTitleBar.setTop(newTop); 3664 } 3665 return super.drawChild(canvas, child, drawingTime); 3666 } 3667 3668 private void drawContent(Canvas canvas) { 3669 // Update the buttons in the picture, so when we draw the picture 3670 // to the screen, they are in the correct state. 3671 // Tell the native side if user is a) touching the screen, 3672 // b) pressing the trackball down, or c) pressing the enter key 3673 // If the cursor is on a button, we need to draw it in the pressed 3674 // state. 3675 // If mNativeClass is 0, we should not reach here, so we do not 3676 // need to check it again. 3677 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3678 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3679 || mTrackballDown || mGotCenterDown, false); 3680 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3681 } 3682 3683 /** 3684 * Draw the background when beyond bounds 3685 * @param canvas Canvas to draw into 3686 */ 3687 private void drawOverScrollBackground(Canvas canvas) { 3688 if (mOverScrollBackground == null) { 3689 mOverScrollBackground = new Paint(); 3690 Bitmap bm = BitmapFactory.decodeResource( 3691 mContext.getResources(), 3692 com.android.internal.R.drawable.status_bar_background); 3693 mOverScrollBackground.setShader(new BitmapShader(bm, 3694 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3695 mOverScrollBorder = new Paint(); 3696 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3697 mOverScrollBorder.setStrokeWidth(0); 3698 mOverScrollBorder.setColor(0xffbbbbbb); 3699 } 3700 3701 int top = 0; 3702 int right = computeRealHorizontalScrollRange(); 3703 int bottom = top + computeRealVerticalScrollRange(); 3704 // first draw the background and anchor to the top of the view 3705 canvas.save(); 3706 canvas.translate(mScrollX, mScrollY); 3707 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3708 - mScrollY, Region.Op.DIFFERENCE); 3709 canvas.drawPaint(mOverScrollBackground); 3710 canvas.restore(); 3711 // then draw the border 3712 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3713 // next clip the region for the content 3714 canvas.clipRect(0, top, right, bottom); 3715 } 3716 3717 @Override 3718 protected void onDraw(Canvas canvas) { 3719 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3720 if (mNativeClass == 0) { 3721 return; 3722 } 3723 3724 // if both mContentWidth and mContentHeight are 0, it means there is no 3725 // valid Picture passed to WebView yet. This can happen when WebView 3726 // just starts. Draw the background and return. 3727 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3728 canvas.drawColor(mBackgroundColor); 3729 return; 3730 } 3731 3732 int saveCount = canvas.save(); 3733 if (mInOverScrollMode && !getSettings() 3734 .getUseWebViewBackgroundForOverscrollBackground()) { 3735 drawOverScrollBackground(canvas); 3736 } 3737 if (mTitleBar != null) { 3738 canvas.translate(0, (int) mTitleBar.getHeight()); 3739 } 3740 drawContent(canvas); 3741 canvas.restoreToCount(saveCount); 3742 3743 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3744 invalidate(); 3745 } 3746 if (inEditingMode()) { 3747 mWebTextView.onDrawSubstitute(); 3748 } 3749 mWebViewCore.signalRepaintDone(); 3750 3751 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3752 invalidate(); 3753 } 3754 3755 // paint the highlight in the end 3756 if (!mTouchHighlightRegion.isEmpty()) { 3757 if (mTouchHightlightPaint == null) { 3758 mTouchHightlightPaint = new Paint(); 3759 mTouchHightlightPaint.setColor(mHightlightColor); 3760 mTouchHightlightPaint.setAntiAlias(true); 3761 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3762 TOUCH_HIGHLIGHT_ARC)); 3763 } 3764 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3765 mTouchHightlightPaint); 3766 } 3767 if (DEBUG_TOUCH_HIGHLIGHT) { 3768 if (getSettings().getNavDump()) { 3769 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3770 if (mTouchCrossHairColor == null) { 3771 mTouchCrossHairColor = new Paint(); 3772 mTouchCrossHairColor.setColor(Color.RED); 3773 } 3774 canvas.drawLine(mTouchHighlightX - mNavSlop, 3775 mTouchHighlightY - mNavSlop, mTouchHighlightX 3776 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3777 + 1, mTouchCrossHairColor); 3778 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3779 mTouchHighlightY - mNavSlop, mTouchHighlightX 3780 - mNavSlop, 3781 mTouchHighlightY + mNavSlop + 1, 3782 mTouchCrossHairColor); 3783 } 3784 } 3785 } 3786 } 3787 3788 private void removeTouchHighlight(boolean removePendingMessage) { 3789 if (removePendingMessage) { 3790 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3791 } 3792 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3793 } 3794 3795 @Override 3796 public void setLayoutParams(ViewGroup.LayoutParams params) { 3797 if (params.height == LayoutParams.WRAP_CONTENT) { 3798 mWrapContent = true; 3799 } 3800 super.setLayoutParams(params); 3801 } 3802 3803 @Override 3804 public boolean performLongClick() { 3805 // performLongClick() is the result of a delayed message. If we switch 3806 // to windows overview, the WebView will be temporarily removed from the 3807 // view system. In that case, do nothing. 3808 if (getParent() == null) return false; 3809 3810 // A multi-finger gesture can look like a long press; make sure we don't take 3811 // long press actions if we're scaling. 3812 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3813 if (detector != null && detector.isInProgress()) { 3814 return false; 3815 } 3816 3817 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3818 // Send the click so that the textfield is in focus 3819 centerKeyPressOnTextField(); 3820 rebuildWebTextView(); 3821 } else { 3822 clearTextEntry(); 3823 } 3824 if (inEditingMode()) { 3825 // Since we just called rebuildWebTextView, the layout is not set 3826 // properly. Update it so it can correctly find the word to select. 3827 mWebTextView.ensureLayout(); 3828 // Provide a touch down event to WebTextView, which will allow it 3829 // to store the location to use in performLongClick. 3830 AbsoluteLayout.LayoutParams params 3831 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3832 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3833 mLastTouchTime, MotionEvent.ACTION_DOWN, 3834 mLastTouchX - params.x + mScrollX, 3835 mLastTouchY - params.y + mScrollY, 0); 3836 mWebTextView.dispatchTouchEvent(fake); 3837 return mWebTextView.performLongClick(); 3838 } 3839 if (mSelectingText) return false; // long click does nothing on selection 3840 /* if long click brings up a context menu, the super function 3841 * returns true and we're done. Otherwise, nothing happened when 3842 * the user clicked. */ 3843 if (super.performLongClick()) { 3844 return true; 3845 } 3846 /* In the case where the application hasn't already handled the long 3847 * click action, look for a word under the click. If one is found, 3848 * animate the text selection into view. 3849 * FIXME: no animation code yet */ 3850 return selectText(); 3851 } 3852 3853 /** 3854 * Select the word at the last click point. 3855 * 3856 * @hide pending API council approval 3857 */ 3858 public boolean selectText() { 3859 int x = viewToContentX((int) mLastTouchX + mScrollX); 3860 int y = viewToContentY((int) mLastTouchY + mScrollY); 3861 return selectText(x, y); 3862 } 3863 3864 /** 3865 * Select the word at the indicated content coordinates. 3866 */ 3867 boolean selectText(int x, int y) { 3868 if (!setUpSelect()) { 3869 return false; 3870 } 3871 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3872 nativeSetExtendSelection(); 3873 mDrawSelectionPointer = false; 3874 mSelectionStarted = true; 3875 mTouchMode = TOUCH_DRAG_MODE; 3876 return true; 3877 } 3878 selectionDone(); 3879 return false; 3880 } 3881 3882 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3883 3884 @Override 3885 protected void onConfigurationChanged(Configuration newConfig) { 3886 if (mSelectingText && mOrientation != newConfig.orientation) { 3887 selectionDone(); 3888 } 3889 mOrientation = newConfig.orientation; 3890 } 3891 3892 /** 3893 * Keep track of the Callback so we can end its ActionMode or remove its 3894 * titlebar. 3895 */ 3896 private SelectActionModeCallback mSelectCallback; 3897 3898 // These values are possible options for didUpdateWebTextViewDimensions. 3899 private static final int FULLY_ON_SCREEN = 0; 3900 private static final int INTERSECTS_SCREEN = 1; 3901 private static final int ANYWHERE = 2; 3902 3903 /** 3904 * Check to see if the focused textfield/textarea is still on screen. If it 3905 * is, update the the dimensions and location of WebTextView. Otherwise, 3906 * remove the WebTextView. Should be called when the zoom level changes. 3907 * @param intersection How to determine whether the textfield/textarea is 3908 * still on screen. 3909 * @return boolean True if the textfield/textarea is still on screen and the 3910 * dimensions/location of WebTextView have been updated. 3911 */ 3912 private boolean didUpdateWebTextViewDimensions(int intersection) { 3913 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3914 Rect vBox = contentToViewRect(contentBounds); 3915 Rect visibleRect = new Rect(); 3916 calcOurVisibleRect(visibleRect); 3917 // If the textfield is on screen, place the WebTextView in 3918 // its new place, accounting for our new scroll/zoom values, 3919 // and adjust its textsize. 3920 boolean onScreen; 3921 switch (intersection) { 3922 case FULLY_ON_SCREEN: 3923 onScreen = visibleRect.contains(vBox); 3924 break; 3925 case INTERSECTS_SCREEN: 3926 onScreen = Rect.intersects(visibleRect, vBox); 3927 break; 3928 case ANYWHERE: 3929 onScreen = true; 3930 break; 3931 default: 3932 throw new AssertionError( 3933 "invalid parameter passed to didUpdateWebTextViewDimensions"); 3934 } 3935 if (onScreen) { 3936 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3937 vBox.height()); 3938 mWebTextView.updateTextSize(); 3939 updateWebTextViewPadding(); 3940 return true; 3941 } else { 3942 // The textfield is now off screen. The user probably 3943 // was not zooming to see the textfield better. Remove 3944 // the WebTextView. If the user types a key, and the 3945 // textfield is still in focus, we will reconstruct 3946 // the WebTextView and scroll it back on screen. 3947 mWebTextView.remove(); 3948 return false; 3949 } 3950 } 3951 3952 void setBaseLayer(int layer, Rect invalRect) { 3953 if (mNativeClass == 0) 3954 return; 3955 if (invalRect == null) { 3956 Rect rect = new Rect(0, 0, mContentWidth, mContentHeight); 3957 nativeSetBaseLayer(layer, rect); 3958 } else { 3959 nativeSetBaseLayer(layer, invalRect); 3960 } 3961 } 3962 3963 private void onZoomAnimationStart() { 3964 // If it is in password mode, turn it off so it does not draw misplaced. 3965 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3966 mWebTextView.setInPassword(false); 3967 } 3968 } 3969 3970 private void onZoomAnimationEnd() { 3971 // adjust the edit text view if needed 3972 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 3973 && nativeFocusCandidateIsPassword()) { 3974 // If it is a password field, start drawing the WebTextView once 3975 // again. 3976 mWebTextView.setInPassword(true); 3977 } 3978 } 3979 3980 void onFixedLengthZoomAnimationStart() { 3981 WebViewCore.pauseUpdatePicture(getWebViewCore()); 3982 onZoomAnimationStart(); 3983 } 3984 3985 void onFixedLengthZoomAnimationEnd() { 3986 if (!mSelectingText) { 3987 WebViewCore.resumeUpdatePicture(mWebViewCore); 3988 } 3989 onZoomAnimationEnd(); 3990 } 3991 3992 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 3993 Paint.DITHER_FLAG | 3994 Paint.SUBPIXEL_TEXT_FLAG; 3995 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 3996 Paint.DITHER_FLAG; 3997 3998 private final DrawFilter mZoomFilter = 3999 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4000 // If we need to trade better quality for speed, set mScrollFilter to null 4001 private final DrawFilter mScrollFilter = 4002 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4003 4004 private void drawCoreAndCursorRing(Canvas canvas, int color, 4005 boolean drawCursorRing) { 4006 if (mDrawHistory) { 4007 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4008 canvas.drawPicture(mHistoryPicture); 4009 return; 4010 } 4011 if (mNativeClass == 0) return; 4012 4013 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4014 boolean animateScroll = ((!mScroller.isFinished() 4015 || mVelocityTracker != null) 4016 && (mTouchMode != TOUCH_DRAG_MODE || 4017 mHeldMotionless != MOTIONLESS_TRUE)) 4018 || mDeferTouchMode == TOUCH_DRAG_MODE; 4019 if (mTouchMode == TOUCH_DRAG_MODE) { 4020 if (mHeldMotionless == MOTIONLESS_PENDING) { 4021 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4022 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4023 mHeldMotionless = MOTIONLESS_FALSE; 4024 } 4025 if (mHeldMotionless == MOTIONLESS_FALSE) { 4026 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4027 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4028 mHeldMotionless = MOTIONLESS_PENDING; 4029 } 4030 } 4031 if (animateZoom) { 4032 mZoomManager.animateZoom(canvas); 4033 } else { 4034 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4035 } 4036 4037 boolean UIAnimationsRunning = false; 4038 // Currently for each draw we compute the animation values; 4039 // We may in the future decide to do that independently. 4040 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4041 UIAnimationsRunning = true; 4042 // If we have unfinished (or unstarted) animations, 4043 // we ask for a repaint. 4044 invalidate(); 4045 } 4046 4047 // decide which adornments to draw 4048 int extras = DRAW_EXTRAS_NONE; 4049 if (mFindIsUp) { 4050 extras = DRAW_EXTRAS_FIND; 4051 } else if (mSelectingText) { 4052 extras = DRAW_EXTRAS_SELECTION; 4053 nativeSetSelectionPointer(mDrawSelectionPointer, 4054 mZoomManager.getInvScale(), 4055 mSelectX, mSelectY - getTitleHeight()); 4056 } else if (drawCursorRing) { 4057 extras = DRAW_EXTRAS_CURSOR_RING; 4058 } 4059 if (DebugFlags.WEB_VIEW) { 4060 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4061 + " mSelectingText=" + mSelectingText 4062 + " nativePageShouldHandleShiftAndArrows()=" 4063 + nativePageShouldHandleShiftAndArrows() 4064 + " animateZoom=" + animateZoom 4065 + " extras=" + extras); 4066 } 4067 4068 if (canvas.isHardwareAccelerated()) { 4069 try { 4070 if (canvas.acquireContext()) { 4071 Rect rect = new Rect(mGLRectViewport.left, 4072 mGLRectViewport.top, 4073 mGLRectViewport.right, 4074 mGLRectViewport.bottom 4075 - getVisibleTitleHeight()); 4076 if (nativeDrawGL(rect, getScale(), extras)) { 4077 invalidate(); 4078 } 4079 } 4080 } finally { 4081 canvas.releaseContext(); 4082 } 4083 } else { 4084 DrawFilter df = null; 4085 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4086 df = mZoomFilter; 4087 } else if (animateScroll) { 4088 df = mScrollFilter; 4089 } 4090 canvas.setDrawFilter(df); 4091 int content = nativeDraw(canvas, color, extras, true); 4092 canvas.setDrawFilter(null); 4093 if (content != 0) { 4094 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4095 } 4096 } 4097 4098 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4099 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4100 mTouchMode = TOUCH_SHORTPRESS_MODE; 4101 } 4102 } 4103 if (mFocusSizeChanged) { 4104 mFocusSizeChanged = false; 4105 // If we are zooming, this will get handled above, when the zoom 4106 // finishes. We also do not need to do this unless the WebTextView 4107 // is showing. 4108 if (!animateZoom && inEditingMode()) { 4109 didUpdateWebTextViewDimensions(ANYWHERE); 4110 } 4111 } 4112 } 4113 4114 // draw history 4115 private boolean mDrawHistory = false; 4116 private Picture mHistoryPicture = null; 4117 private int mHistoryWidth = 0; 4118 private int mHistoryHeight = 0; 4119 4120 // Only check the flag, can be called from WebCore thread 4121 boolean drawHistory() { 4122 return mDrawHistory; 4123 } 4124 4125 int getHistoryPictureWidth() { 4126 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4127 } 4128 4129 // Should only be called in UI thread 4130 void switchOutDrawHistory() { 4131 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4132 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4133 mDrawHistory = false; 4134 mHistoryPicture = null; 4135 invalidate(); 4136 int oldScrollX = mScrollX; 4137 int oldScrollY = mScrollY; 4138 mScrollX = pinLocX(mScrollX); 4139 mScrollY = pinLocY(mScrollY); 4140 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4141 mUserScroll = false; 4142 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 4143 oldScrollY); 4144 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4145 } else { 4146 sendOurVisibleRect(); 4147 } 4148 } 4149 } 4150 4151 WebViewCore.CursorData cursorData() { 4152 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4153 result.mMoveGeneration = nativeMoveGeneration(); 4154 result.mFrame = nativeCursorFramePointer(); 4155 Point position = nativeCursorPosition(); 4156 result.mX = position.x; 4157 result.mY = position.y; 4158 return result; 4159 } 4160 4161 /** 4162 * Delete text from start to end in the focused textfield. If there is no 4163 * focus, or if start == end, silently fail. If start and end are out of 4164 * order, swap them. 4165 * @param start Beginning of selection to delete. 4166 * @param end End of selection to delete. 4167 */ 4168 /* package */ void deleteSelection(int start, int end) { 4169 mTextGeneration++; 4170 WebViewCore.TextSelectionData data 4171 = new WebViewCore.TextSelectionData(start, end); 4172 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4173 data); 4174 } 4175 4176 /** 4177 * Set the selection to (start, end) in the focused textfield. If start and 4178 * end are out of order, swap them. 4179 * @param start Beginning of selection. 4180 * @param end End of selection. 4181 */ 4182 /* package */ void setSelection(int start, int end) { 4183 if (mWebViewCore != null) { 4184 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4185 } 4186 } 4187 4188 @Override 4189 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4190 InputConnection connection = super.onCreateInputConnection(outAttrs); 4191 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4192 return connection; 4193 } 4194 4195 /** 4196 * Called in response to a message from webkit telling us that the soft 4197 * keyboard should be launched. 4198 */ 4199 private void displaySoftKeyboard(boolean isTextView) { 4200 InputMethodManager imm = (InputMethodManager) 4201 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4202 4203 // bring it back to the default level scale so that user can enter text 4204 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4205 if (zoom) { 4206 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4207 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4208 } 4209 if (isTextView) { 4210 rebuildWebTextView(); 4211 if (inEditingMode()) { 4212 imm.showSoftInput(mWebTextView, 0); 4213 if (zoom) { 4214 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4215 } 4216 return; 4217 } 4218 } 4219 // Used by plugins and contentEditable. 4220 // Also used if the navigation cache is out of date, and 4221 // does not recognize that a textfield is in focus. In that 4222 // case, use WebView as the targeted view. 4223 // see http://b/issue?id=2457459 4224 imm.showSoftInput(this, 0); 4225 } 4226 4227 // Called by WebKit to instruct the UI to hide the keyboard 4228 private void hideSoftKeyboard() { 4229 InputMethodManager imm = InputMethodManager.peekInstance(); 4230 if (imm != null && (imm.isActive(this) 4231 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4232 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4233 } 4234 } 4235 4236 /* 4237 * This method checks the current focus and cursor and potentially rebuilds 4238 * mWebTextView to have the appropriate properties, such as password, 4239 * multiline, and what text it contains. It also removes it if necessary. 4240 */ 4241 /* package */ void rebuildWebTextView() { 4242 // If the WebView does not have focus, do nothing until it gains focus. 4243 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4244 return; 4245 } 4246 boolean alreadyThere = inEditingMode(); 4247 // inEditingMode can only return true if mWebTextView is non-null, 4248 // so we can safely call remove() if (alreadyThere) 4249 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4250 if (alreadyThere) { 4251 mWebTextView.remove(); 4252 } 4253 return; 4254 } 4255 // At this point, we know we have found an input field, so go ahead 4256 // and create the WebTextView if necessary. 4257 if (mWebTextView == null) { 4258 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4259 // Initialize our generation number. 4260 mTextGeneration = 0; 4261 } 4262 mWebTextView.updateTextSize(); 4263 Rect visibleRect = new Rect(); 4264 calcOurContentVisibleRect(visibleRect); 4265 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4266 // should be in content coordinates. 4267 Rect bounds = nativeFocusCandidateNodeBounds(); 4268 Rect vBox = contentToViewRect(bounds); 4269 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4270 if (!Rect.intersects(bounds, visibleRect)) { 4271 mWebTextView.bringIntoView(); 4272 } 4273 String text = nativeFocusCandidateText(); 4274 int nodePointer = nativeFocusCandidatePointer(); 4275 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4276 // It is possible that we have the same textfield, but it has moved, 4277 // i.e. In the case of opening/closing the screen. 4278 // In that case, we need to set the dimensions, but not the other 4279 // aspects. 4280 // If the text has been changed by webkit, update it. However, if 4281 // there has been more UI text input, ignore it. We will receive 4282 // another update when that text is recognized. 4283 if (text != null && !text.equals(mWebTextView.getText().toString()) 4284 && nativeTextGeneration() == mTextGeneration) { 4285 mWebTextView.setTextAndKeepSelection(text); 4286 } 4287 } else { 4288 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4289 Gravity.RIGHT : Gravity.NO_GRAVITY); 4290 // This needs to be called before setType, which may call 4291 // requestFormData, and it needs to have the correct nodePointer. 4292 mWebTextView.setNodePointer(nodePointer); 4293 mWebTextView.setType(nativeFocusCandidateType()); 4294 updateWebTextViewPadding(); 4295 if (null == text) { 4296 if (DebugFlags.WEB_VIEW) { 4297 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4298 } 4299 text = ""; 4300 } 4301 mWebTextView.setTextAndKeepSelection(text); 4302 InputMethodManager imm = InputMethodManager.peekInstance(); 4303 if (imm != null && imm.isActive(mWebTextView)) { 4304 imm.restartInput(mWebTextView); 4305 } 4306 } 4307 if (isFocused()) { 4308 mWebTextView.requestFocus(); 4309 } 4310 } 4311 4312 /** 4313 * Update the padding of mWebTextView based on the native textfield/textarea 4314 */ 4315 void updateWebTextViewPadding() { 4316 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4317 if (paddingRect != null) { 4318 // Use contentToViewDimension since these are the dimensions of 4319 // the padding. 4320 mWebTextView.setPadding( 4321 contentToViewDimension(paddingRect.left), 4322 contentToViewDimension(paddingRect.top), 4323 contentToViewDimension(paddingRect.right), 4324 contentToViewDimension(paddingRect.bottom)); 4325 } 4326 } 4327 4328 /** 4329 * Tell webkit to put the cursor on screen. 4330 */ 4331 /* package */ void revealSelection() { 4332 if (mWebViewCore != null) { 4333 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4334 } 4335 } 4336 4337 /** 4338 * Called by WebTextView to find saved form data associated with the 4339 * textfield 4340 * @param name Name of the textfield. 4341 * @param nodePointer Pointer to the node of the textfield, so it can be 4342 * compared to the currently focused textfield when the data is 4343 * retrieved. 4344 * @param autoFillable true if WebKit has determined this field is part of 4345 * a form that can be auto filled. 4346 * @param autoComplete true if the attribute "autocomplete" is set to true 4347 * on the textfield. 4348 */ 4349 /* package */ void requestFormData(String name, int nodePointer, 4350 boolean autoFillable, boolean autoComplete) { 4351 if (mWebViewCore.getSettings().getSaveFormData()) { 4352 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4353 update.arg1 = nodePointer; 4354 RequestFormData updater = new RequestFormData(name, getUrl(), 4355 update, autoFillable, autoComplete); 4356 Thread t = new Thread(updater); 4357 t.start(); 4358 } 4359 } 4360 4361 /** 4362 * Pass a message to find out the <label> associated with the <input> 4363 * identified by nodePointer 4364 * @param framePointer Pointer to the frame containing the <input> node 4365 * @param nodePointer Pointer to the node for which a <label> is desired. 4366 */ 4367 /* package */ void requestLabel(int framePointer, int nodePointer) { 4368 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4369 nodePointer); 4370 } 4371 4372 /* 4373 * This class requests an Adapter for the WebTextView which shows past 4374 * entries stored in the database. It is a Runnable so that it can be done 4375 * in its own thread, without slowing down the UI. 4376 */ 4377 private class RequestFormData implements Runnable { 4378 private String mName; 4379 private String mUrl; 4380 private Message mUpdateMessage; 4381 private boolean mAutoFillable; 4382 private boolean mAutoComplete; 4383 4384 public RequestFormData(String name, String url, Message msg, 4385 boolean autoFillable, boolean autoComplete) { 4386 mName = name; 4387 mUrl = url; 4388 mUpdateMessage = msg; 4389 mAutoFillable = autoFillable; 4390 mAutoComplete = autoComplete; 4391 } 4392 4393 public void run() { 4394 ArrayList<String> pastEntries = new ArrayList<String>(); 4395 4396 if (mAutoFillable) { 4397 // Note that code inside the adapter click handler in WebTextView depends 4398 // on the AutoFill item being at the top of the drop down list. If you change 4399 // the order, make sure to do it there too! 4400 WebSettings settings = getSettings(); 4401 if (settings != null && settings.getAutoFillProfile() != null) { 4402 pastEntries.add(getResources().getText( 4403 com.android.internal.R.string.autofill_this_form).toString() + 4404 " " + 4405 mAutoFillData.getPreviewString()); 4406 mWebTextView.setAutoFillProfileIsSet(true); 4407 } else { 4408 // There is no autofill profile set up yet, so add an option that 4409 // will invite the user to set their profile up. 4410 pastEntries.add(getResources().getText( 4411 com.android.internal.R.string.setup_autofill).toString()); 4412 mWebTextView.setAutoFillProfileIsSet(false); 4413 } 4414 } 4415 4416 if (mAutoComplete) { 4417 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4418 } 4419 4420 if (pastEntries.size() > 0) { 4421 AutoCompleteAdapter adapter = new 4422 AutoCompleteAdapter(mContext, pastEntries); 4423 mUpdateMessage.obj = adapter; 4424 mUpdateMessage.sendToTarget(); 4425 } 4426 } 4427 } 4428 4429 /** 4430 * Dump the display tree to "/sdcard/displayTree.txt" 4431 * 4432 * @hide debug only 4433 */ 4434 public void dumpDisplayTree() { 4435 nativeDumpDisplayTree(getUrl()); 4436 } 4437 4438 /** 4439 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4440 * "/sdcard/domTree.txt" 4441 * 4442 * @hide debug only 4443 */ 4444 public void dumpDomTree(boolean toFile) { 4445 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4446 } 4447 4448 /** 4449 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4450 * to "/sdcard/renderTree.txt" 4451 * 4452 * @hide debug only 4453 */ 4454 public void dumpRenderTree(boolean toFile) { 4455 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4456 } 4457 4458 /** 4459 * Called by DRT on UI thread, need to proxy to WebCore thread. 4460 * 4461 * @hide debug only 4462 */ 4463 public void useMockDeviceOrientation() { 4464 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4465 } 4466 4467 /** 4468 * Called by DRT on WebCore thread. 4469 * 4470 * @hide debug only 4471 */ 4472 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4473 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4474 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4475 canProvideGamma, gamma); 4476 } 4477 4478 /** 4479 * Dump the V8 counters to standard output. 4480 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4481 * true. Otherwise, this will do nothing. 4482 * 4483 * @hide debug only 4484 */ 4485 public void dumpV8Counters() { 4486 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4487 } 4488 4489 // This is used to determine long press with the center key. Does not 4490 // affect long press with the trackball/touch. 4491 private boolean mGotCenterDown = false; 4492 4493 @Override 4494 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4495 // send complex characters to webkit for use by JS and plugins 4496 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4497 // pass the key to DOM 4498 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4499 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4500 // return true as DOM handles the key 4501 return true; 4502 } 4503 return false; 4504 } 4505 4506 private boolean isEnterActionKey(int keyCode) { 4507 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4508 || keyCode == KeyEvent.KEYCODE_ENTER 4509 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4510 } 4511 4512 @Override 4513 public boolean onKeyDown(int keyCode, KeyEvent event) { 4514 if (DebugFlags.WEB_VIEW) { 4515 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4516 + "keyCode=" + keyCode 4517 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4518 } 4519 4520 // don't implement accelerator keys here; defer to host application 4521 if (event.isCtrlPressed()) { 4522 return false; 4523 } 4524 4525 if (mNativeClass == 0) { 4526 return false; 4527 } 4528 4529 // do this hack up front, so it always works, regardless of touch-mode 4530 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4531 mAutoRedraw = !mAutoRedraw; 4532 if (mAutoRedraw) { 4533 invalidate(); 4534 } 4535 return true; 4536 } 4537 4538 // Bubble up the key event if 4539 // 1. it is a system key; or 4540 // 2. the host application wants to handle it; 4541 if (event.isSystem() 4542 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4543 return false; 4544 } 4545 4546 // accessibility support 4547 if (accessibilityScriptInjected()) { 4548 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4549 // if an accessibility script is injected we delegate to it the key handling. 4550 // this script is a screen reader which is a fully fledged solution for blind 4551 // users to navigate in and interact with web pages. 4552 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4553 return true; 4554 } else { 4555 // Clean up if accessibility was disabled after loading the current URL. 4556 mAccessibilityScriptInjected = false; 4557 } 4558 } else if (mAccessibilityInjector != null) { 4559 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4560 if (mAccessibilityInjector.onKeyEvent(event)) { 4561 // if an accessibility injector is present (no JavaScript enabled or the site 4562 // opts out injecting our JavaScript screen reader) we let it decide whether 4563 // to act on and consume the event. 4564 return true; 4565 } 4566 } else { 4567 // Clean up if accessibility was disabled after loading the current URL. 4568 mAccessibilityInjector = null; 4569 } 4570 } 4571 4572 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4573 if (event.hasNoModifiers()) { 4574 pageUp(false); 4575 return true; 4576 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4577 pageUp(true); 4578 return true; 4579 } 4580 } 4581 4582 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4583 if (event.hasNoModifiers()) { 4584 pageDown(false); 4585 return true; 4586 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4587 pageDown(true); 4588 return true; 4589 } 4590 } 4591 4592 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4593 pageUp(true); 4594 return true; 4595 } 4596 4597 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4598 pageDown(true); 4599 return true; 4600 } 4601 4602 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4603 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4604 switchOutDrawHistory(); 4605 if (nativePageShouldHandleShiftAndArrows()) { 4606 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4607 return true; 4608 } 4609 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4610 switch (keyCode) { 4611 case KeyEvent.KEYCODE_DPAD_UP: 4612 pageUp(true); 4613 return true; 4614 case KeyEvent.KEYCODE_DPAD_DOWN: 4615 pageDown(true); 4616 return true; 4617 case KeyEvent.KEYCODE_DPAD_LEFT: 4618 nativeClearCursor(); // start next trackball movement from page edge 4619 return pinScrollTo(0, mScrollY, true, 0); 4620 case KeyEvent.KEYCODE_DPAD_RIGHT: 4621 nativeClearCursor(); // start next trackball movement from page edge 4622 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4623 } 4624 } 4625 if (mSelectingText) { 4626 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4627 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4628 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4629 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4630 int multiplier = event.getRepeatCount() + 1; 4631 moveSelection(xRate * multiplier, yRate * multiplier); 4632 return true; 4633 } 4634 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4635 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4636 return true; 4637 } 4638 // Bubble up the key event as WebView doesn't handle it 4639 return false; 4640 } 4641 4642 if (isEnterActionKey(keyCode)) { 4643 switchOutDrawHistory(); 4644 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4645 || nativeCursorWantsKeyEvents(); 4646 if (event.getRepeatCount() == 0) { 4647 if (mSelectingText) { 4648 return true; // discard press if copy in progress 4649 } 4650 mGotCenterDown = true; 4651 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4652 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4653 // Already checked mNativeClass, so we do not need to check it 4654 // again. 4655 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4656 if (!wantsKeyEvents) return true; 4657 } 4658 // Bubble up the key event as WebView doesn't handle it 4659 if (!wantsKeyEvents) return false; 4660 } 4661 4662 if (getSettings().getNavDump()) { 4663 switch (keyCode) { 4664 case KeyEvent.KEYCODE_4: 4665 dumpDisplayTree(); 4666 break; 4667 case KeyEvent.KEYCODE_5: 4668 case KeyEvent.KEYCODE_6: 4669 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4670 break; 4671 case KeyEvent.KEYCODE_7: 4672 case KeyEvent.KEYCODE_8: 4673 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4674 break; 4675 case KeyEvent.KEYCODE_9: 4676 nativeInstrumentReport(); 4677 return true; 4678 } 4679 } 4680 4681 if (nativeCursorIsTextInput()) { 4682 // This message will put the node in focus, for the DOM's notion 4683 // of focus. 4684 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 4685 nativeCursorNodePointer()); 4686 // This will bring up the WebTextView and put it in focus, for 4687 // our view system's notion of focus 4688 rebuildWebTextView(); 4689 // Now we need to pass the event to it 4690 if (inEditingMode()) { 4691 mWebTextView.setDefaultSelection(); 4692 return mWebTextView.dispatchKeyEvent(event); 4693 } 4694 } else if (nativeHasFocusNode()) { 4695 // In this case, the cursor is not on a text input, but the focus 4696 // might be. Check it, and if so, hand over to the WebTextView. 4697 rebuildWebTextView(); 4698 if (inEditingMode()) { 4699 mWebTextView.setDefaultSelection(); 4700 return mWebTextView.dispatchKeyEvent(event); 4701 } 4702 } 4703 4704 // TODO: should we pass all the keys to DOM or check the meta tag 4705 if (nativeCursorWantsKeyEvents() || true) { 4706 // pass the key to DOM 4707 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4708 // return true as DOM handles the key 4709 return true; 4710 } 4711 4712 // Bubble up the key event as WebView doesn't handle it 4713 return false; 4714 } 4715 4716 @Override 4717 public boolean onKeyUp(int keyCode, KeyEvent event) { 4718 if (DebugFlags.WEB_VIEW) { 4719 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4720 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4721 } 4722 4723 if (mNativeClass == 0) { 4724 return false; 4725 } 4726 4727 // special CALL handling when cursor node's href is "tel:XXX" 4728 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4729 String text = nativeCursorText(); 4730 if (!nativeCursorIsTextInput() && text != null 4731 && text.startsWith(SCHEME_TEL)) { 4732 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4733 getContext().startActivity(intent); 4734 return true; 4735 } 4736 } 4737 4738 // Bubble up the key event if 4739 // 1. it is a system key; or 4740 // 2. the host application wants to handle it; 4741 if (event.isSystem() 4742 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4743 return false; 4744 } 4745 4746 // accessibility support 4747 if (accessibilityScriptInjected()) { 4748 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4749 // if an accessibility script is injected we delegate to it the key handling. 4750 // this script is a screen reader which is a fully fledged solution for blind 4751 // users to navigate in and interact with web pages. 4752 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4753 return true; 4754 } else { 4755 // Clean up if accessibility was disabled after loading the current URL. 4756 mAccessibilityScriptInjected = false; 4757 } 4758 } else if (mAccessibilityInjector != null) { 4759 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4760 if (mAccessibilityInjector.onKeyEvent(event)) { 4761 // if an accessibility injector is present (no JavaScript enabled or the site 4762 // opts out injecting our JavaScript screen reader) we let it decide whether to 4763 // act on and consume the event. 4764 return true; 4765 } 4766 } else { 4767 // Clean up if accessibility was disabled after loading the current URL. 4768 mAccessibilityInjector = null; 4769 } 4770 } 4771 4772 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4773 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4774 if (nativePageShouldHandleShiftAndArrows()) { 4775 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4776 return true; 4777 } 4778 // always handle the navigation keys in the UI thread 4779 // Bubble up the key event as WebView doesn't handle it 4780 return false; 4781 } 4782 4783 if (isEnterActionKey(keyCode)) { 4784 // remove the long press message first 4785 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4786 mGotCenterDown = false; 4787 4788 if (mSelectingText) { 4789 if (mExtendSelection) { 4790 copySelection(); 4791 selectionDone(); 4792 } else { 4793 mExtendSelection = true; 4794 nativeSetExtendSelection(); 4795 invalidate(); // draw the i-beam instead of the arrow 4796 } 4797 return true; // discard press if copy in progress 4798 } 4799 4800 // perform the single click 4801 Rect visibleRect = sendOurVisibleRect(); 4802 // Note that sendOurVisibleRect calls viewToContent, so the 4803 // coordinates should be in content coordinates. 4804 if (!nativeCursorIntersects(visibleRect)) { 4805 return false; 4806 } 4807 WebViewCore.CursorData data = cursorData(); 4808 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4809 playSoundEffect(SoundEffectConstants.CLICK); 4810 if (nativeCursorIsTextInput()) { 4811 rebuildWebTextView(); 4812 centerKeyPressOnTextField(); 4813 if (inEditingMode()) { 4814 mWebTextView.setDefaultSelection(); 4815 } 4816 return true; 4817 } 4818 clearTextEntry(); 4819 nativeShowCursorTimed(); 4820 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4821 return true; 4822 } 4823 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 4824 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4825 nativeCursorNodePointer()); 4826 return true; 4827 } 4828 } 4829 4830 // TODO: should we pass all the keys to DOM or check the meta tag 4831 if (nativeCursorWantsKeyEvents() || true) { 4832 // pass the key to DOM 4833 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4834 // return true as DOM handles the key 4835 return true; 4836 } 4837 4838 // Bubble up the key event as WebView doesn't handle it 4839 return false; 4840 } 4841 4842 /* 4843 * Enter selecting text mode. Returns true if the WebView is now in 4844 * selecting text mode (including if it was already in that mode, and this 4845 * method did nothing). 4846 */ 4847 private boolean setUpSelect() { 4848 if (0 == mNativeClass) return false; // client isn't initialized 4849 if (inFullScreenMode()) return false; 4850 if (mSelectingText) return true; 4851 mExtendSelection = false; 4852 mSelectingText = mDrawSelectionPointer = true; 4853 // don't let the picture change during text selection 4854 WebViewCore.pauseUpdatePicture(mWebViewCore); 4855 nativeResetSelection(); 4856 if (nativeHasCursorNode()) { 4857 Rect rect = nativeCursorNodeBounds(); 4858 mSelectX = contentToViewX(rect.left); 4859 mSelectY = contentToViewY(rect.top); 4860 } else if (mLastTouchY > getVisibleTitleHeight()) { 4861 mSelectX = mScrollX + (int) mLastTouchX; 4862 mSelectY = mScrollY + (int) mLastTouchY; 4863 } else { 4864 mSelectX = mScrollX + getViewWidth() / 2; 4865 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4866 } 4867 nativeHideCursor(); 4868 mSelectCallback = new SelectActionModeCallback(); 4869 mSelectCallback.setWebView(this); 4870 if (startActionMode(mSelectCallback) == null) { 4871 // There is no ActionMode, so do not allow the user to modify a 4872 // selection. 4873 selectionDone(); 4874 return false; 4875 } 4876 mMinAutoScrollX = 0; 4877 mMaxAutoScrollX = getViewWidth(); 4878 mMinAutoScrollY = 0; 4879 mMaxAutoScrollY = getViewHeightWithTitle(); 4880 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 4881 viewToContentY(mSelectY), mScrollingLayerRect, 4882 mScrollingLayerBounds); 4883 if (mScrollingLayer != 0) { 4884 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 4885 mMinAutoScrollX = Math.max(mMinAutoScrollX, 4886 contentToViewX(mScrollingLayerBounds.left)); 4887 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 4888 contentToViewX(mScrollingLayerBounds.right)); 4889 } 4890 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 4891 mMinAutoScrollY = Math.max(mMinAutoScrollY, 4892 contentToViewY(mScrollingLayerBounds.top)); 4893 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 4894 contentToViewY(mScrollingLayerBounds.bottom)); 4895 } 4896 } 4897 mMinAutoScrollX += SELECT_SCROLL; 4898 mMaxAutoScrollX -= SELECT_SCROLL; 4899 mMinAutoScrollY += SELECT_SCROLL; 4900 mMaxAutoScrollY -= SELECT_SCROLL; 4901 return true; 4902 } 4903 4904 /** 4905 * Use this method to put the WebView into text selection mode. 4906 * Do not rely on this functionality; it will be deprecated in the future. 4907 */ 4908 public void emulateShiftHeld() { 4909 setUpSelect(); 4910 } 4911 4912 /** 4913 * Select all of the text in this WebView. 4914 * 4915 * @hide pending API council approval. 4916 */ 4917 public void selectAll() { 4918 if (0 == mNativeClass) return; // client isn't initialized 4919 if (inFullScreenMode()) return; 4920 if (!mSelectingText) { 4921 // retrieve a point somewhere within the text 4922 Point select = nativeSelectableText(); 4923 if (!selectText(select.x, select.y)) return; 4924 } 4925 nativeSelectAll(); 4926 mDrawSelectionPointer = false; 4927 mExtendSelection = true; 4928 invalidate(); 4929 } 4930 4931 /** 4932 * Called when the selection has been removed. 4933 */ 4934 void selectionDone() { 4935 if (mSelectingText) { 4936 mSelectingText = false; 4937 // finish is idempotent, so this is fine even if selectionDone was 4938 // called by mSelectCallback.onDestroyActionMode 4939 mSelectCallback.finish(); 4940 mSelectCallback = null; 4941 WebViewCore.resumePriority(); 4942 WebViewCore.resumeUpdatePicture(mWebViewCore); 4943 invalidate(); // redraw without selection 4944 mAutoScrollX = 0; 4945 mAutoScrollY = 0; 4946 mSentAutoScrollMessage = false; 4947 } 4948 } 4949 4950 /** 4951 * Copy the selection to the clipboard 4952 * 4953 * @hide pending API council approval. 4954 */ 4955 public boolean copySelection() { 4956 boolean copiedSomething = false; 4957 String selection = getSelection(); 4958 if (selection != null && selection != "") { 4959 if (DebugFlags.WEB_VIEW) { 4960 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4961 } 4962 Toast.makeText(mContext 4963 , com.android.internal.R.string.text_copied 4964 , Toast.LENGTH_SHORT).show(); 4965 copiedSomething = true; 4966 ClipboardManager cm = (ClipboardManager)getContext() 4967 .getSystemService(Context.CLIPBOARD_SERVICE); 4968 cm.setText(selection); 4969 } 4970 invalidate(); // remove selection region and pointer 4971 return copiedSomething; 4972 } 4973 4974 /** 4975 * Returns the currently highlighted text as a string. 4976 */ 4977 String getSelection() { 4978 if (mNativeClass == 0) return ""; 4979 return nativeGetSelection(); 4980 } 4981 4982 @Override 4983 protected void onAttachedToWindow() { 4984 super.onAttachedToWindow(); 4985 if (hasWindowFocus()) setActive(true); 4986 final ViewTreeObserver treeObserver = getViewTreeObserver(); 4987 if (treeObserver != null) { 4988 if (mGlobalLayoutListener == null) { 4989 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 4990 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 4991 } 4992 if (mScrollChangedListener == null) { 4993 mScrollChangedListener = new InnerScrollChangedListener(); 4994 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 4995 } 4996 } 4997 } 4998 4999 @Override 5000 protected void onDetachedFromWindow() { 5001 clearHelpers(); 5002 mZoomManager.dismissZoomPicker(); 5003 if (hasWindowFocus()) setActive(false); 5004 5005 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5006 if (treeObserver != null) { 5007 if (mGlobalLayoutListener != null) { 5008 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5009 mGlobalLayoutListener = null; 5010 } 5011 if (mScrollChangedListener != null) { 5012 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5013 mScrollChangedListener = null; 5014 } 5015 } 5016 5017 super.onDetachedFromWindow(); 5018 } 5019 5020 @Override 5021 protected void onVisibilityChanged(View changedView, int visibility) { 5022 super.onVisibilityChanged(changedView, visibility); 5023 // The zoomManager may be null if the webview is created from XML that 5024 // specifies the view's visibility param as not visible (see http://b/2794841) 5025 if (visibility != View.VISIBLE && mZoomManager != null) { 5026 mZoomManager.dismissZoomPicker(); 5027 } 5028 } 5029 5030 /** 5031 * @deprecated WebView no longer needs to implement 5032 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5033 */ 5034 @Deprecated 5035 public void onChildViewAdded(View parent, View child) {} 5036 5037 /** 5038 * @deprecated WebView no longer needs to implement 5039 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5040 */ 5041 @Deprecated 5042 public void onChildViewRemoved(View p, View child) {} 5043 5044 /** 5045 * @deprecated WebView should not have implemented 5046 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 5047 * does nothing now. 5048 */ 5049 @Deprecated 5050 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5051 } 5052 5053 private void setActive(boolean active) { 5054 if (active) { 5055 if (hasFocus()) { 5056 // If our window regained focus, and we have focus, then begin 5057 // drawing the cursor ring 5058 mDrawCursorRing = true; 5059 setFocusControllerActive(true); 5060 if (mNativeClass != 0) { 5061 nativeRecordButtons(true, false, true); 5062 } 5063 } else { 5064 if (!inEditingMode()) { 5065 // If our window gained focus, but we do not have it, do not 5066 // draw the cursor ring. 5067 mDrawCursorRing = false; 5068 setFocusControllerActive(false); 5069 } 5070 // We do not call nativeRecordButtons here because we assume 5071 // that when we lost focus, or window focus, it got called with 5072 // false for the first parameter 5073 } 5074 } else { 5075 if (!mZoomManager.isZoomPickerVisible()) { 5076 /* 5077 * The external zoom controls come in their own window, so our 5078 * window loses focus. Our policy is to not draw the cursor ring 5079 * if our window is not focused, but this is an exception since 5080 * the user can still navigate the web page with the zoom 5081 * controls showing. 5082 */ 5083 mDrawCursorRing = false; 5084 } 5085 mGotKeyDown = false; 5086 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5087 mTouchMode = TOUCH_DONE_MODE; 5088 if (mNativeClass != 0) { 5089 nativeRecordButtons(false, false, true); 5090 } 5091 setFocusControllerActive(false); 5092 } 5093 invalidate(); 5094 } 5095 5096 // To avoid drawing the cursor ring, and remove the TextView when our window 5097 // loses focus. 5098 @Override 5099 public void onWindowFocusChanged(boolean hasWindowFocus) { 5100 setActive(hasWindowFocus); 5101 if (hasWindowFocus) { 5102 JWebCoreJavaBridge.setActiveWebView(this); 5103 } else { 5104 JWebCoreJavaBridge.removeActiveWebView(this); 5105 } 5106 super.onWindowFocusChanged(hasWindowFocus); 5107 } 5108 5109 /* 5110 * Pass a message to WebCore Thread, telling the WebCore::Page's 5111 * FocusController to be "inactive" so that it will 5112 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5113 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5114 */ 5115 /* package */ void setFocusControllerActive(boolean active) { 5116 if (mWebViewCore == null) return; 5117 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5118 // Need to send this message after the document regains focus. 5119 if (active && mListBoxMessage != null) { 5120 mWebViewCore.sendMessage(mListBoxMessage); 5121 mListBoxMessage = null; 5122 } 5123 } 5124 5125 @Override 5126 protected void onFocusChanged(boolean focused, int direction, 5127 Rect previouslyFocusedRect) { 5128 if (DebugFlags.WEB_VIEW) { 5129 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5130 } 5131 if (focused) { 5132 // When we regain focus, if we have window focus, resume drawing 5133 // the cursor ring 5134 if (hasWindowFocus()) { 5135 mDrawCursorRing = true; 5136 if (mNativeClass != 0) { 5137 nativeRecordButtons(true, false, true); 5138 } 5139 setFocusControllerActive(true); 5140 //} else { 5141 // The WebView has gained focus while we do not have 5142 // windowfocus. When our window lost focus, we should have 5143 // called nativeRecordButtons(false...) 5144 } 5145 } else { 5146 // When we lost focus, unless focus went to the TextView (which is 5147 // true if we are in editing mode), stop drawing the cursor ring. 5148 if (!inEditingMode()) { 5149 mDrawCursorRing = false; 5150 if (mNativeClass != 0) { 5151 nativeRecordButtons(false, false, true); 5152 } 5153 setFocusControllerActive(false); 5154 } 5155 mGotKeyDown = false; 5156 } 5157 5158 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5159 } 5160 5161 void setGLRectViewport() { 5162 // Use the getGlobalVisibleRect() to get the intersection among the parents 5163 Rect webViewRect = new Rect(); 5164 boolean visible = getGlobalVisibleRect(webViewRect); 5165 5166 // Then need to invert the Y axis, just for GL 5167 View rootView = getRootView(); 5168 int rootViewHeight = rootView.getHeight(); 5169 int savedWebViewBottom = webViewRect.bottom; 5170 webViewRect.bottom = rootViewHeight - webViewRect.top; 5171 webViewRect.top = rootViewHeight - savedWebViewBottom; 5172 5173 // Store the viewport 5174 mGLRectViewport = webViewRect; 5175 } 5176 5177 /** 5178 * @hide 5179 */ 5180 @Override 5181 protected boolean setFrame(int left, int top, int right, int bottom) { 5182 boolean changed = super.setFrame(left, top, right, bottom); 5183 if (!changed && mHeightCanMeasure) { 5184 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5185 // in WebViewCore after we get the first layout. We do call 5186 // requestLayout() when we get contentSizeChanged(). But the View 5187 // system won't call onSizeChanged if the dimension is not changed. 5188 // In this case, we need to call sendViewSizeZoom() explicitly to 5189 // notify the WebKit about the new dimensions. 5190 sendViewSizeZoom(false); 5191 } 5192 setGLRectViewport(); 5193 return changed; 5194 } 5195 5196 @Override 5197 protected void onSizeChanged(int w, int h, int ow, int oh) { 5198 super.onSizeChanged(w, h, ow, oh); 5199 5200 // adjust the max viewport width depending on the view dimensions. This 5201 // is to ensure the scaling is not going insane. So do not shrink it if 5202 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5203 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5204 if (newMaxViewportWidth > sMaxViewportWidth) { 5205 sMaxViewportWidth = newMaxViewportWidth; 5206 } 5207 5208 mZoomManager.onSizeChanged(w, h, ow, oh); 5209 } 5210 5211 @Override 5212 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5213 super.onScrollChanged(l, t, oldl, oldt); 5214 if (!mInOverScrollMode) { 5215 sendOurVisibleRect(); 5216 // update WebKit if visible title bar height changed. The logic is same 5217 // as getVisibleTitleHeight. 5218 int titleHeight = getTitleHeight(); 5219 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5220 sendViewSizeZoom(false); 5221 } 5222 } 5223 } 5224 5225 @Override 5226 public boolean dispatchKeyEvent(KeyEvent event) { 5227 boolean dispatch = true; 5228 5229 // Textfields, plugins, and contentEditable nodes need to receive the 5230 // shift up key even if another key was released while the shift key 5231 // was held down. 5232 boolean inEditingMode = inEditingMode(); 5233 if (!inEditingMode && (mNativeClass == 0 5234 || !nativePageShouldHandleShiftAndArrows())) { 5235 if (event.getAction() == KeyEvent.ACTION_DOWN) { 5236 mGotKeyDown = true; 5237 } else { 5238 if (!mGotKeyDown) { 5239 /* 5240 * We got a key up for which we were not the recipient of 5241 * the original key down. Don't give it to the view. 5242 */ 5243 dispatch = false; 5244 } 5245 mGotKeyDown = false; 5246 } 5247 } 5248 5249 if (dispatch) { 5250 if (inEditingMode) { 5251 // Ensure that the WebTextView gets the event, even if it does 5252 // not currently have a bounds. 5253 return mWebTextView.dispatchKeyEvent(event); 5254 } else { 5255 return super.dispatchKeyEvent(event); 5256 } 5257 } else { 5258 // We didn't dispatch, so let something else handle the key 5259 return false; 5260 } 5261 } 5262 5263 // Here are the snap align logic: 5264 // 1. If it starts nearly horizontally or vertically, snap align; 5265 // 2. If there is a dramitic direction change, let it go; 5266 // 3. If there is a same direction back and forth, lock it. 5267 5268 // adjustable parameters 5269 private int mMinLockSnapReverseDistance; 5270 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5271 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5272 5273 private boolean hitFocusedPlugin(int contentX, int contentY) { 5274 if (DebugFlags.WEB_VIEW) { 5275 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5276 Rect r = nativeFocusNodeBounds(); 5277 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5278 + ", " + r.right + ", " + r.bottom + ")"); 5279 } 5280 return nativeFocusIsPlugin() 5281 && nativeFocusNodeBounds().contains(contentX, contentY); 5282 } 5283 5284 private boolean shouldForwardTouchEvent() { 5285 return mFullScreenHolder != null || (mForwardTouchEvents 5286 && !mSelectingText 5287 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5288 } 5289 5290 private boolean inFullScreenMode() { 5291 return mFullScreenHolder != null; 5292 } 5293 5294 private void dismissFullScreenMode() { 5295 if (inFullScreenMode()) { 5296 mFullScreenHolder.dismiss(); 5297 mFullScreenHolder = null; 5298 } 5299 } 5300 5301 void onPinchToZoomAnimationStart() { 5302 // cancel the single touch handling 5303 cancelTouch(); 5304 onZoomAnimationStart(); 5305 } 5306 5307 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5308 onZoomAnimationEnd(); 5309 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5310 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5311 // as it may trigger the unwanted fling. 5312 mTouchMode = TOUCH_PINCH_DRAG; 5313 mConfirmMove = true; 5314 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5315 } 5316 5317 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5318 // layer is found. 5319 private void startScrollingLayer(float x, float y) { 5320 int contentX = viewToContentX((int) x + mScrollX); 5321 int contentY = viewToContentY((int) y + mScrollY); 5322 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5323 mScrollingLayerRect, mScrollingLayerBounds); 5324 if (mScrollingLayer != 0) { 5325 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5326 } 5327 } 5328 5329 // 1/(density * density) used to compute the distance between points. 5330 // Computed in init(). 5331 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5332 5333 // The distance between two points reported in onTouchEvent scaled by the 5334 // density of the screen. 5335 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5336 5337 @Override 5338 public boolean onTouchEvent(MotionEvent ev) { 5339 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5340 return false; 5341 } 5342 5343 if (DebugFlags.WEB_VIEW) { 5344 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5345 + " mTouchMode=" + mTouchMode 5346 + " numPointers=" + ev.getPointerCount()); 5347 } 5348 5349 // Always pass multi-touch event to WebKit first. 5350 // If WebKit doesn't consume it and set preventDefault to true, 5351 // WebView's private handler will handle it. 5352 if (ev.getPointerCount() > 1) { 5353 if (DebugFlags.WEB_VIEW) { 5354 Log.v(LOGTAG, "passing " + ev.getPointerCount() + " points to webkit"); 5355 } 5356 passMultiTouchToWebKit(ev); 5357 return true; 5358 } 5359 5360 return handleTouchEventCommon(ev); 5361 } 5362 5363 private boolean handleTouchEventCommon(MotionEvent ev) { 5364 int action = ev.getAction(); 5365 float x = ev.getX(); 5366 float y = ev.getY(); 5367 long eventTime = ev.getEventTime(); 5368 5369 5370 // Due to the touch screen edge effect, a touch closer to the edge 5371 // always snapped to the edge. As getViewWidth() can be different from 5372 // getWidth() due to the scrollbar, adjusting the point to match 5373 // getViewWidth(). Same applied to the height. 5374 x = Math.min(x, getViewWidth() - 1); 5375 y = Math.min(y, getViewHeightWithTitle() - 1); 5376 5377 float fDeltaX = mLastTouchX - x; 5378 float fDeltaY = mLastTouchY - y; 5379 int deltaX = (int) fDeltaX; 5380 int deltaY = (int) fDeltaY; 5381 int contentX = viewToContentX((int) x + mScrollX); 5382 int contentY = viewToContentY((int) y + mScrollY); 5383 5384 switch (action) { 5385 case MotionEvent.ACTION_DOWN: { 5386 mPreventDefault = PREVENT_DEFAULT_NO; 5387 mConfirmMove = false; 5388 mInitialHitTestResult = null; 5389 if (!mScroller.isFinished()) { 5390 // stop the current scroll animation, but if this is 5391 // the start of a fling, allow it to add to the current 5392 // fling's velocity 5393 mScroller.abortAnimation(); 5394 mTouchMode = TOUCH_DRAG_START_MODE; 5395 mConfirmMove = true; 5396 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5397 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5398 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5399 if (getSettings().supportTouchOnly()) { 5400 removeTouchHighlight(true); 5401 } 5402 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5403 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5404 } else { 5405 // commit the short press action for the previous tap 5406 doShortPress(); 5407 mTouchMode = TOUCH_INIT_MODE; 5408 mDeferTouchProcess = (!inFullScreenMode() 5409 && mForwardTouchEvents) ? hitFocusedPlugin( 5410 contentX, contentY) : false; 5411 } 5412 } else { // the normal case 5413 mTouchMode = TOUCH_INIT_MODE; 5414 mDeferTouchProcess = (!inFullScreenMode() 5415 && mForwardTouchEvents) ? hitFocusedPlugin( 5416 contentX, contentY) : false; 5417 mWebViewCore.sendMessage( 5418 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5419 if (getSettings().supportTouchOnly()) { 5420 TouchHighlightData data = new TouchHighlightData(); 5421 data.mX = contentX; 5422 data.mY = contentY; 5423 data.mSlop = viewToContentDimension(mNavSlop); 5424 mWebViewCore.sendMessageDelayed( 5425 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5426 ViewConfiguration.getTapTimeout()); 5427 if (DEBUG_TOUCH_HIGHLIGHT) { 5428 if (getSettings().getNavDump()) { 5429 mTouchHighlightX = (int) x + mScrollX; 5430 mTouchHighlightY = (int) y + mScrollY; 5431 mPrivateHandler.postDelayed(new Runnable() { 5432 public void run() { 5433 mTouchHighlightX = mTouchHighlightY = 0; 5434 invalidate(); 5435 } 5436 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5437 } 5438 } 5439 } 5440 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5441 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5442 (eventTime - mLastTouchUpTime), eventTime); 5443 } 5444 if (mSelectingText) { 5445 mDrawSelectionPointer = false; 5446 mSelectionStarted = nativeStartSelection(contentX, contentY); 5447 if (DebugFlags.WEB_VIEW) { 5448 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5449 } 5450 invalidate(); 5451 } 5452 } 5453 // Trigger the link 5454 if (mTouchMode == TOUCH_INIT_MODE 5455 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5456 mPrivateHandler.sendEmptyMessageDelayed( 5457 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5458 mPrivateHandler.sendEmptyMessageDelayed( 5459 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5460 if (inFullScreenMode() || mDeferTouchProcess) { 5461 mPreventDefault = PREVENT_DEFAULT_YES; 5462 } else if (mForwardTouchEvents) { 5463 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5464 } else { 5465 mPreventDefault = PREVENT_DEFAULT_NO; 5466 } 5467 // pass the touch events from UI thread to WebCore thread 5468 if (shouldForwardTouchEvent()) { 5469 TouchEventData ted = new TouchEventData(); 5470 ted.mAction = action; 5471 ted.mPoints = new Point[1]; 5472 ted.mPoints[0] = new Point(contentX, contentY); 5473 ted.mMetaState = ev.getMetaState(); 5474 ted.mReprocess = mDeferTouchProcess; 5475 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5476 if (mDeferTouchProcess) { 5477 // still needs to set them for compute deltaX/Y 5478 mLastTouchX = x; 5479 mLastTouchY = y; 5480 break; 5481 } 5482 if (!inFullScreenMode()) { 5483 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5484 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5485 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5486 action, 0), TAP_TIMEOUT); 5487 } 5488 } 5489 } 5490 startTouch(x, y, eventTime); 5491 break; 5492 } 5493 case MotionEvent.ACTION_MOVE: { 5494 boolean firstMove = false; 5495 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5496 >= mTouchSlopSquare) { 5497 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5498 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5499 mConfirmMove = true; 5500 firstMove = true; 5501 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5502 mTouchMode = TOUCH_INIT_MODE; 5503 } 5504 if (getSettings().supportTouchOnly()) { 5505 removeTouchHighlight(true); 5506 } 5507 } 5508 // pass the touch events from UI thread to WebCore thread 5509 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5510 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5511 TouchEventData ted = new TouchEventData(); 5512 ted.mAction = action; 5513 ted.mPoints = new Point[1]; 5514 ted.mPoints[0] = new Point(contentX, contentY); 5515 ted.mMetaState = ev.getMetaState(); 5516 ted.mReprocess = mDeferTouchProcess; 5517 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5518 mLastSentTouchTime = eventTime; 5519 if (mDeferTouchProcess) { 5520 break; 5521 } 5522 if (firstMove && !inFullScreenMode()) { 5523 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5524 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5525 action, 0), TAP_TIMEOUT); 5526 } 5527 } 5528 if (mTouchMode == TOUCH_DONE_MODE 5529 || mPreventDefault == PREVENT_DEFAULT_YES) { 5530 // no dragging during scroll zoom animation, or when prevent 5531 // default is yes 5532 break; 5533 } 5534 if (mVelocityTracker == null) { 5535 Log.e(LOGTAG, "Got null mVelocityTracker when " 5536 + "mPreventDefault = " + mPreventDefault 5537 + " mDeferTouchProcess = " + mDeferTouchProcess 5538 + " mTouchMode = " + mTouchMode); 5539 } else { 5540 mVelocityTracker.addMovement(ev); 5541 } 5542 if (mSelectingText && mSelectionStarted) { 5543 if (DebugFlags.WEB_VIEW) { 5544 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5545 } 5546 ViewParent parent = getParent(); 5547 if (parent != null) { 5548 parent.requestDisallowInterceptTouchEvent(true); 5549 } 5550 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5551 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5552 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5553 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5554 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5555 && !mSentAutoScrollMessage) { 5556 mSentAutoScrollMessage = true; 5557 mPrivateHandler.sendEmptyMessageDelayed( 5558 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5559 } 5560 if (deltaX != 0 || deltaY != 0) { 5561 nativeExtendSelection(contentX, contentY); 5562 invalidate(); 5563 } 5564 break; 5565 } 5566 5567 if (mTouchMode != TOUCH_DRAG_MODE && 5568 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5569 5570 if (!mConfirmMove) { 5571 break; 5572 } 5573 5574 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5575 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5576 // track mLastTouchTime as we may need to do fling at 5577 // ACTION_UP 5578 mLastTouchTime = eventTime; 5579 break; 5580 } 5581 5582 mTouchMode = TOUCH_DRAG_MODE; 5583 mLastTouchX = x; 5584 mLastTouchY = y; 5585 fDeltaX = 0.0f; 5586 fDeltaY = 0.0f; 5587 deltaX = 0; 5588 deltaY = 0; 5589 5590 startScrollingLayer(x, y); 5591 startDrag(); 5592 } 5593 5594 // do pan 5595 boolean done = false; 5596 boolean keepScrollBarsVisible = false; 5597 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5598 mLastTouchX = x; 5599 mLastTouchY = y; 5600 keepScrollBarsVisible = done = true; 5601 } else { 5602 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5603 int ax = Math.abs(deltaX); 5604 int ay = Math.abs(deltaY); 5605 if (mSnapScrollMode == SNAP_X) { 5606 // radical change means getting out of snap mode 5607 if (ay > MAX_SLOPE_FOR_DIAG * ax 5608 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5609 mSnapScrollMode = SNAP_NONE; 5610 } 5611 // reverse direction means lock in the snap mode 5612 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5613 (mSnapPositive 5614 ? deltaX < -mMinLockSnapReverseDistance 5615 : deltaX > mMinLockSnapReverseDistance)) { 5616 mSnapScrollMode |= SNAP_LOCK; 5617 } 5618 } else { 5619 // radical change means getting out of snap mode 5620 if (ax > MAX_SLOPE_FOR_DIAG * ay 5621 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5622 mSnapScrollMode = SNAP_NONE; 5623 } 5624 // reverse direction means lock in the snap mode 5625 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5626 (mSnapPositive 5627 ? deltaY < -mMinLockSnapReverseDistance 5628 : deltaY > mMinLockSnapReverseDistance)) { 5629 mSnapScrollMode |= SNAP_LOCK; 5630 } 5631 } 5632 } 5633 if (mSnapScrollMode != SNAP_NONE) { 5634 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5635 deltaY = 0; 5636 } else { 5637 deltaX = 0; 5638 } 5639 } 5640 if ((deltaX | deltaY) != 0) { 5641 if (deltaX != 0) { 5642 mLastTouchX = x; 5643 } 5644 if (deltaY != 0) { 5645 mLastTouchY = y; 5646 } 5647 mHeldMotionless = MOTIONLESS_FALSE; 5648 } else { 5649 // keep the scrollbar on the screen even there is no 5650 // scroll 5651 mLastTouchX = x; 5652 mLastTouchY = y; 5653 keepScrollBarsVisible = true; 5654 } 5655 mLastTouchTime = eventTime; 5656 mUserScroll = true; 5657 } 5658 5659 doDrag(deltaX, deltaY); 5660 5661 // Turn off scrollbars when dragging a layer. 5662 if (keepScrollBarsVisible && 5663 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5664 if (mHeldMotionless != MOTIONLESS_TRUE) { 5665 mHeldMotionless = MOTIONLESS_TRUE; 5666 invalidate(); 5667 } 5668 // keep the scrollbar on the screen even there is no scroll 5669 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5670 false); 5671 // return false to indicate that we can't pan out of the 5672 // view space 5673 return !done; 5674 } 5675 break; 5676 } 5677 case MotionEvent.ACTION_UP: { 5678 if (!isFocused()) requestFocus(); 5679 // pass the touch events from UI thread to WebCore thread 5680 if (shouldForwardTouchEvent()) { 5681 TouchEventData ted = new TouchEventData(); 5682 ted.mAction = action; 5683 ted.mPoints = new Point[1]; 5684 ted.mPoints[0] = new Point(contentX, contentY); 5685 ted.mMetaState = ev.getMetaState(); 5686 ted.mReprocess = mDeferTouchProcess; 5687 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5688 } 5689 mLastTouchUpTime = eventTime; 5690 if (mSentAutoScrollMessage) { 5691 mAutoScrollX = mAutoScrollY = 0; 5692 } 5693 switch (mTouchMode) { 5694 case TOUCH_DOUBLE_TAP_MODE: // double tap 5695 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5696 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5697 if (inFullScreenMode() || mDeferTouchProcess) { 5698 TouchEventData ted = new TouchEventData(); 5699 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5700 ted.mPoints = new Point[1]; 5701 ted.mPoints[0] = new Point(contentX, contentY); 5702 ted.mMetaState = ev.getMetaState(); 5703 ted.mReprocess = mDeferTouchProcess; 5704 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5705 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5706 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5707 mTouchMode = TOUCH_DONE_MODE; 5708 } 5709 break; 5710 case TOUCH_INIT_MODE: // tap 5711 case TOUCH_SHORTPRESS_START_MODE: 5712 case TOUCH_SHORTPRESS_MODE: 5713 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5714 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5715 if (mConfirmMove) { 5716 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5717 " WebCore's response for touch down."); 5718 if (mPreventDefault != PREVENT_DEFAULT_YES 5719 && (computeMaxScrollX() > 0 5720 || computeMaxScrollY() > 0)) { 5721 // If the user has performed a very quick touch 5722 // sequence it is possible that we may get here 5723 // before WebCore has had a chance to process the events. 5724 // In this case, any call to preventDefault in the 5725 // JS touch handler will not have been executed yet. 5726 // Hence we will see both the UI (now) and WebCore 5727 // (when context switches) handling the event, 5728 // regardless of whether the web developer actually 5729 // doeses preventDefault in their touch handler. This 5730 // is the nature of our asynchronous touch model. 5731 5732 // we will not rewrite drag code here, but we 5733 // will try fling if it applies. 5734 WebViewCore.reducePriority(); 5735 // to get better performance, pause updating the 5736 // picture 5737 WebViewCore.pauseUpdatePicture(mWebViewCore); 5738 // fall through to TOUCH_DRAG_MODE 5739 } else { 5740 // WebKit may consume the touch event and modify 5741 // DOM. drawContentPicture() will be called with 5742 // animateSroll as true for better performance. 5743 // Force redraw in high-quality. 5744 invalidate(); 5745 break; 5746 } 5747 } else { 5748 if (mSelectingText) { 5749 // tapping on selection or controls does nothing 5750 if (!nativeHitSelection(contentX, contentY)) { 5751 selectionDone(); 5752 } 5753 break; 5754 } 5755 // only trigger double tap if the WebView is 5756 // scalable 5757 if (mTouchMode == TOUCH_INIT_MODE 5758 && (canZoomIn() || canZoomOut())) { 5759 mPrivateHandler.sendEmptyMessageDelayed( 5760 RELEASE_SINGLE_TAP, ViewConfiguration 5761 .getDoubleTapTimeout()); 5762 } else { 5763 doShortPress(); 5764 } 5765 break; 5766 } 5767 case TOUCH_DRAG_MODE: 5768 case TOUCH_DRAG_LAYER_MODE: 5769 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5770 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5771 // if the user waits a while w/o moving before the 5772 // up, we don't want to do a fling 5773 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5774 if (mVelocityTracker == null) { 5775 Log.e(LOGTAG, "Got null mVelocityTracker when " 5776 + "mPreventDefault = " 5777 + mPreventDefault 5778 + " mDeferTouchProcess = " 5779 + mDeferTouchProcess); 5780 } else { 5781 mVelocityTracker.addMovement(ev); 5782 } 5783 // set to MOTIONLESS_IGNORE so that it won't keep 5784 // removing and sending message in 5785 // drawCoreAndCursorRing() 5786 mHeldMotionless = MOTIONLESS_IGNORE; 5787 doFling(); 5788 break; 5789 } else { 5790 if (mScroller.springBack(mScrollX, mScrollY, 0, 5791 computeMaxScrollX(), 0, 5792 computeMaxScrollY())) { 5793 invalidate(); 5794 } 5795 } 5796 // redraw in high-quality, as we're done dragging 5797 mHeldMotionless = MOTIONLESS_TRUE; 5798 invalidate(); 5799 // fall through 5800 case TOUCH_DRAG_START_MODE: 5801 // TOUCH_DRAG_START_MODE should not happen for the real 5802 // device as we almost certain will get a MOVE. But this 5803 // is possible on emulator. 5804 mLastVelocity = 0; 5805 WebViewCore.resumePriority(); 5806 if (!mSelectingText) { 5807 WebViewCore.resumeUpdatePicture(mWebViewCore); 5808 } 5809 break; 5810 } 5811 stopTouch(); 5812 break; 5813 } 5814 case MotionEvent.ACTION_CANCEL: { 5815 if (mTouchMode == TOUCH_DRAG_MODE) { 5816 mScroller.springBack(mScrollX, mScrollY, 0, 5817 computeMaxScrollX(), 0, computeMaxScrollY()); 5818 invalidate(); 5819 } 5820 cancelWebCoreTouchEvent(contentX, contentY, false); 5821 cancelTouch(); 5822 break; 5823 } 5824 } 5825 return true; 5826 } 5827 5828 private void passMultiTouchToWebKit(MotionEvent ev) { 5829 TouchEventData ted = new TouchEventData(); 5830 ted.mAction = ev.getAction() & MotionEvent.ACTION_MASK; 5831 final int count = ev.getPointerCount(); 5832 ted.mPoints = new Point[count]; 5833 for (int c = 0; c < count; c++) { 5834 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5835 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5836 ted.mPoints[c] = new Point(x, y); 5837 } 5838 ted.mMetaState = ev.getMetaState(); 5839 ted.mReprocess = true; 5840 ted.mMotionEvent = MotionEvent.obtain(ev); 5841 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5842 cancelLongPress(); 5843 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5844 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5845 } 5846 5847 private boolean handleMultiTouchInWebView(MotionEvent ev) { 5848 if (DebugFlags.WEB_VIEW) { 5849 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 5850 + " mTouchMode=" + mTouchMode 5851 + " numPointers=" + ev.getPointerCount() 5852 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 5853 } 5854 5855 final ScaleGestureDetector detector = 5856 mZoomManager.getMultiTouchGestureDetector(); 5857 5858 // A few apps use WebView but don't instantiate gesture detector. 5859 // We don't need to support multi touch for them. 5860 if (detector == null) return false; 5861 5862 int action = ev.getAction(); 5863 float x = ev.getX(); 5864 float y = ev.getY(); 5865 long eventTime = ev.getEventTime(); 5866 5867 if (!detector.isInProgress() && 5868 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 5869 // Insert a fake pointer down event in order to start 5870 // the zoom scale detector. 5871 MotionEvent temp = MotionEvent.obtain(ev); 5872 // Clear the original event and set it to 5873 // ACTION_POINTER_DOWN. 5874 try { 5875 temp.setAction(temp.getAction() & 5876 ~MotionEvent.ACTION_MASK | 5877 MotionEvent.ACTION_POINTER_DOWN); 5878 detector.onTouchEvent(temp); 5879 } finally { 5880 temp.recycle(); 5881 } 5882 } 5883 5884 detector.onTouchEvent(ev); 5885 5886 if (detector.isInProgress()) { 5887 if (DebugFlags.WEB_VIEW) { 5888 Log.v(LOGTAG, "detector is in progress"); 5889 } 5890 mLastTouchTime = eventTime; 5891 cancelLongPress(); 5892 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5893 if (!mZoomManager.supportsPanDuringZoom()) { 5894 return false; 5895 } 5896 mTouchMode = TOUCH_DRAG_MODE; 5897 if (mVelocityTracker == null) { 5898 mVelocityTracker = VelocityTracker.obtain(); 5899 } 5900 } 5901 5902 action = ev.getAction() & MotionEvent.ACTION_MASK; 5903 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5904 cancelTouch(); 5905 action = MotionEvent.ACTION_DOWN; 5906 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5907 // set mLastTouchX/Y to the remaining point 5908 mLastTouchX = x; 5909 mLastTouchY = y; 5910 } else if (action == MotionEvent.ACTION_MOVE) { 5911 // negative x or y indicate it is on the edge, skip it. 5912 if (x < 0 || y < 0) { 5913 return false; 5914 } 5915 } 5916 5917 return handleTouchEventCommon(ev); 5918 } 5919 5920 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5921 if (shouldForwardTouchEvent()) { 5922 if (removeEvents) { 5923 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5924 } 5925 TouchEventData ted = new TouchEventData(); 5926 ted.mPoints = new Point[1]; 5927 ted.mPoints[0] = new Point(x, y); 5928 ted.mAction = MotionEvent.ACTION_CANCEL; 5929 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5930 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5931 } 5932 } 5933 5934 private void startTouch(float x, float y, long eventTime) { 5935 // Remember where the motion event started 5936 mLastTouchX = x; 5937 mLastTouchY = y; 5938 mLastTouchTime = eventTime; 5939 mVelocityTracker = VelocityTracker.obtain(); 5940 mSnapScrollMode = SNAP_NONE; 5941 } 5942 5943 private void startDrag() { 5944 WebViewCore.reducePriority(); 5945 // to get better performance, pause updating the picture 5946 WebViewCore.pauseUpdatePicture(mWebViewCore); 5947 if (!mDragFromTextInput) { 5948 nativeHideCursor(); 5949 } 5950 5951 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5952 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 5953 mZoomManager.invokeZoomPicker(); 5954 } 5955 } 5956 5957 private void doDrag(int deltaX, int deltaY) { 5958 if ((deltaX | deltaY) != 0) { 5959 int oldX = mScrollX; 5960 int oldY = mScrollY; 5961 int rangeX = computeMaxScrollX(); 5962 int rangeY = computeMaxScrollY(); 5963 int overscrollDistance = mOverscrollDistance; 5964 5965 // Check for the original scrolling layer in case we change 5966 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 5967 // reached the edge of a layer but mScrollingLayer will be non-zero 5968 // if we initiated the drag on a layer. 5969 if (mScrollingLayer != 0) { 5970 final int contentX = viewToContentDimension(deltaX); 5971 final int contentY = viewToContentDimension(deltaY); 5972 5973 // Check the scrolling bounds to see if we will actually do any 5974 // scrolling. The rectangle is in document coordinates. 5975 final int maxX = mScrollingLayerRect.right; 5976 final int maxY = mScrollingLayerRect.bottom; 5977 final int resultX = Math.max(0, 5978 Math.min(mScrollingLayerRect.left + contentX, maxX)); 5979 final int resultY = Math.max(0, 5980 Math.min(mScrollingLayerRect.top + contentY, maxY)); 5981 5982 if (resultX != mScrollingLayerRect.left || 5983 resultY != mScrollingLayerRect.top) { 5984 // In case we switched to dragging the page. 5985 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5986 deltaX = contentX; 5987 deltaY = contentY; 5988 oldX = mScrollingLayerRect.left; 5989 oldY = mScrollingLayerRect.top; 5990 rangeX = maxX; 5991 rangeY = maxY; 5992 } else { 5993 // Scroll the main page if we are not going to scroll the 5994 // layer. This does not reset mScrollingLayer in case the 5995 // user changes directions and the layer can scroll the 5996 // other way. 5997 mTouchMode = TOUCH_DRAG_MODE; 5998 } 5999 } 6000 6001 if (mOverScrollGlow != null) { 6002 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6003 } 6004 6005 overScrollBy(deltaX, deltaY, oldX, oldY, 6006 rangeX, rangeY, 6007 mOverscrollDistance, mOverscrollDistance, true); 6008 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6009 invalidate(); 6010 } 6011 } 6012 mZoomManager.keepZoomPickerVisible(); 6013 } 6014 6015 private void stopTouch() { 6016 // we also use mVelocityTracker == null to tell us that we are 6017 // not "moving around", so we can take the slower/prettier 6018 // mode in the drawing code 6019 if (mVelocityTracker != null) { 6020 mVelocityTracker.recycle(); 6021 mVelocityTracker = null; 6022 } 6023 6024 // Release any pulled glows 6025 if (mOverScrollGlow != null) { 6026 mOverScrollGlow.releaseAll(); 6027 } 6028 } 6029 6030 private void cancelTouch() { 6031 // we also use mVelocityTracker == null to tell us that we are 6032 // not "moving around", so we can take the slower/prettier 6033 // mode in the drawing code 6034 if (mVelocityTracker != null) { 6035 mVelocityTracker.recycle(); 6036 mVelocityTracker = null; 6037 } 6038 6039 if ((mTouchMode == TOUCH_DRAG_MODE 6040 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6041 WebViewCore.resumePriority(); 6042 WebViewCore.resumeUpdatePicture(mWebViewCore); 6043 } 6044 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6045 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6046 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6047 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6048 if (getSettings().supportTouchOnly()) { 6049 removeTouchHighlight(true); 6050 } 6051 mHeldMotionless = MOTIONLESS_TRUE; 6052 mTouchMode = TOUCH_DONE_MODE; 6053 nativeHideCursor(); 6054 } 6055 6056 private long mTrackballFirstTime = 0; 6057 private long mTrackballLastTime = 0; 6058 private float mTrackballRemainsX = 0.0f; 6059 private float mTrackballRemainsY = 0.0f; 6060 private int mTrackballXMove = 0; 6061 private int mTrackballYMove = 0; 6062 private boolean mSelectingText = false; 6063 private boolean mSelectionStarted = false; 6064 private boolean mExtendSelection = false; 6065 private boolean mDrawSelectionPointer = false; 6066 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6067 private static final int TRACKBALL_TIMEOUT = 200; 6068 private static final int TRACKBALL_WAIT = 100; 6069 private static final int TRACKBALL_SCALE = 400; 6070 private static final int TRACKBALL_SCROLL_COUNT = 5; 6071 private static final int TRACKBALL_MOVE_COUNT = 10; 6072 private static final int TRACKBALL_MULTIPLIER = 3; 6073 private static final int SELECT_CURSOR_OFFSET = 16; 6074 private static final int SELECT_SCROLL = 5; 6075 private int mSelectX = 0; 6076 private int mSelectY = 0; 6077 private boolean mFocusSizeChanged = false; 6078 private boolean mTrackballDown = false; 6079 private long mTrackballUpTime = 0; 6080 private long mLastCursorTime = 0; 6081 private Rect mLastCursorBounds; 6082 6083 // Set by default; BrowserActivity clears to interpret trackball data 6084 // directly for movement. Currently, the framework only passes 6085 // arrow key events, not trackball events, from one child to the next 6086 private boolean mMapTrackballToArrowKeys = true; 6087 6088 public void setMapTrackballToArrowKeys(boolean setMap) { 6089 mMapTrackballToArrowKeys = setMap; 6090 } 6091 6092 void resetTrackballTime() { 6093 mTrackballLastTime = 0; 6094 } 6095 6096 @Override 6097 public boolean onTrackballEvent(MotionEvent ev) { 6098 long time = ev.getEventTime(); 6099 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6100 if (ev.getY() > 0) pageDown(true); 6101 if (ev.getY() < 0) pageUp(true); 6102 return true; 6103 } 6104 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6105 if (mSelectingText) { 6106 return true; // discard press if copy in progress 6107 } 6108 mTrackballDown = true; 6109 if (mNativeClass == 0) { 6110 return false; 6111 } 6112 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6113 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6114 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6115 nativeSelectBestAt(mLastCursorBounds); 6116 } 6117 if (DebugFlags.WEB_VIEW) { 6118 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6119 + " time=" + time 6120 + " mLastCursorTime=" + mLastCursorTime); 6121 } 6122 if (isInTouchMode()) requestFocusFromTouch(); 6123 return false; // let common code in onKeyDown at it 6124 } 6125 if (ev.getAction() == MotionEvent.ACTION_UP) { 6126 // LONG_PRESS_CENTER is set in common onKeyDown 6127 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6128 mTrackballDown = false; 6129 mTrackballUpTime = time; 6130 if (mSelectingText) { 6131 if (mExtendSelection) { 6132 copySelection(); 6133 selectionDone(); 6134 } else { 6135 mExtendSelection = true; 6136 nativeSetExtendSelection(); 6137 invalidate(); // draw the i-beam instead of the arrow 6138 } 6139 return true; // discard press if copy in progress 6140 } 6141 if (DebugFlags.WEB_VIEW) { 6142 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6143 + " time=" + time 6144 ); 6145 } 6146 return false; // let common code in onKeyUp at it 6147 } 6148 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6149 AccessibilityManager.getInstance(mContext).isEnabled()) { 6150 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6151 return false; 6152 } 6153 if (mTrackballDown) { 6154 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6155 return true; // discard move if trackball is down 6156 } 6157 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6158 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6159 return true; 6160 } 6161 // TODO: alternatively we can do panning as touch does 6162 switchOutDrawHistory(); 6163 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6164 if (DebugFlags.WEB_VIEW) { 6165 Log.v(LOGTAG, "onTrackballEvent time=" 6166 + time + " last=" + mTrackballLastTime); 6167 } 6168 mTrackballFirstTime = time; 6169 mTrackballXMove = mTrackballYMove = 0; 6170 } 6171 mTrackballLastTime = time; 6172 if (DebugFlags.WEB_VIEW) { 6173 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6174 } 6175 mTrackballRemainsX += ev.getX(); 6176 mTrackballRemainsY += ev.getY(); 6177 doTrackball(time, ev.getMetaState()); 6178 return true; 6179 } 6180 6181 void moveSelection(float xRate, float yRate) { 6182 if (mNativeClass == 0) 6183 return; 6184 int width = getViewWidth(); 6185 int height = getViewHeight(); 6186 mSelectX += xRate; 6187 mSelectY += yRate; 6188 int maxX = width + mScrollX; 6189 int maxY = height + mScrollY; 6190 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6191 , mSelectX)); 6192 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6193 , mSelectY)); 6194 if (DebugFlags.WEB_VIEW) { 6195 Log.v(LOGTAG, "moveSelection" 6196 + " mSelectX=" + mSelectX 6197 + " mSelectY=" + mSelectY 6198 + " mScrollX=" + mScrollX 6199 + " mScrollY=" + mScrollY 6200 + " xRate=" + xRate 6201 + " yRate=" + yRate 6202 ); 6203 } 6204 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6205 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6206 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6207 : 0; 6208 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6209 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6210 : 0; 6211 pinScrollBy(scrollX, scrollY, true, 0); 6212 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6213 requestRectangleOnScreen(select); 6214 invalidate(); 6215 } 6216 6217 private int scaleTrackballX(float xRate, int width) { 6218 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6219 int nextXMove = xMove; 6220 if (xMove > 0) { 6221 if (xMove > mTrackballXMove) { 6222 xMove -= mTrackballXMove; 6223 } 6224 } else if (xMove < mTrackballXMove) { 6225 xMove -= mTrackballXMove; 6226 } 6227 mTrackballXMove = nextXMove; 6228 return xMove; 6229 } 6230 6231 private int scaleTrackballY(float yRate, int height) { 6232 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6233 int nextYMove = yMove; 6234 if (yMove > 0) { 6235 if (yMove > mTrackballYMove) { 6236 yMove -= mTrackballYMove; 6237 } 6238 } else if (yMove < mTrackballYMove) { 6239 yMove -= mTrackballYMove; 6240 } 6241 mTrackballYMove = nextYMove; 6242 return yMove; 6243 } 6244 6245 private int keyCodeToSoundsEffect(int keyCode) { 6246 switch(keyCode) { 6247 case KeyEvent.KEYCODE_DPAD_UP: 6248 return SoundEffectConstants.NAVIGATION_UP; 6249 case KeyEvent.KEYCODE_DPAD_RIGHT: 6250 return SoundEffectConstants.NAVIGATION_RIGHT; 6251 case KeyEvent.KEYCODE_DPAD_DOWN: 6252 return SoundEffectConstants.NAVIGATION_DOWN; 6253 case KeyEvent.KEYCODE_DPAD_LEFT: 6254 return SoundEffectConstants.NAVIGATION_LEFT; 6255 } 6256 throw new IllegalArgumentException("keyCode must be one of " + 6257 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6258 "KEYCODE_DPAD_LEFT}."); 6259 } 6260 6261 private void doTrackball(long time, int metaState) { 6262 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6263 if (elapsed == 0) { 6264 elapsed = TRACKBALL_TIMEOUT; 6265 } 6266 float xRate = mTrackballRemainsX * 1000 / elapsed; 6267 float yRate = mTrackballRemainsY * 1000 / elapsed; 6268 int viewWidth = getViewWidth(); 6269 int viewHeight = getViewHeight(); 6270 if (mSelectingText) { 6271 if (!mDrawSelectionPointer) { 6272 // The last selection was made by touch, disabling drawing the 6273 // selection pointer. Allow the trackball to adjust the 6274 // position of the touch control. 6275 mSelectX = contentToViewX(nativeSelectionX()); 6276 mSelectY = contentToViewY(nativeSelectionY()); 6277 mDrawSelectionPointer = mExtendSelection = true; 6278 nativeSetExtendSelection(); 6279 } 6280 moveSelection(scaleTrackballX(xRate, viewWidth), 6281 scaleTrackballY(yRate, viewHeight)); 6282 mTrackballRemainsX = mTrackballRemainsY = 0; 6283 return; 6284 } 6285 float ax = Math.abs(xRate); 6286 float ay = Math.abs(yRate); 6287 float maxA = Math.max(ax, ay); 6288 if (DebugFlags.WEB_VIEW) { 6289 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6290 + " xRate=" + xRate 6291 + " yRate=" + yRate 6292 + " mTrackballRemainsX=" + mTrackballRemainsX 6293 + " mTrackballRemainsY=" + mTrackballRemainsY); 6294 } 6295 int width = mContentWidth - viewWidth; 6296 int height = mContentHeight - viewHeight; 6297 if (width < 0) width = 0; 6298 if (height < 0) height = 0; 6299 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6300 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6301 maxA = Math.max(ax, ay); 6302 int count = Math.max(0, (int) maxA); 6303 int oldScrollX = mScrollX; 6304 int oldScrollY = mScrollY; 6305 if (count > 0) { 6306 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6307 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6308 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6309 KeyEvent.KEYCODE_DPAD_RIGHT; 6310 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6311 if (DebugFlags.WEB_VIEW) { 6312 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6313 + " count=" + count 6314 + " mTrackballRemainsX=" + mTrackballRemainsX 6315 + " mTrackballRemainsY=" + mTrackballRemainsY); 6316 } 6317 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6318 for (int i = 0; i < count; i++) { 6319 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6320 } 6321 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6322 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6323 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6324 } 6325 mTrackballRemainsX = mTrackballRemainsY = 0; 6326 } 6327 if (count >= TRACKBALL_SCROLL_COUNT) { 6328 int xMove = scaleTrackballX(xRate, width); 6329 int yMove = scaleTrackballY(yRate, height); 6330 if (DebugFlags.WEB_VIEW) { 6331 Log.v(LOGTAG, "doTrackball pinScrollBy" 6332 + " count=" + count 6333 + " xMove=" + xMove + " yMove=" + yMove 6334 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6335 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6336 ); 6337 } 6338 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6339 xMove = 0; 6340 } 6341 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6342 yMove = 0; 6343 } 6344 if (xMove != 0 || yMove != 0) { 6345 pinScrollBy(xMove, yMove, true, 0); 6346 } 6347 mUserScroll = true; 6348 } 6349 } 6350 6351 /** 6352 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6353 * @return Maximum horizontal scroll position within real content 6354 */ 6355 int computeMaxScrollX() { 6356 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6357 } 6358 6359 /** 6360 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6361 * @return Maximum vertical scroll position within real content 6362 */ 6363 int computeMaxScrollY() { 6364 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6365 - getViewHeightWithTitle(), 0); 6366 } 6367 6368 boolean updateScrollCoordinates(int x, int y) { 6369 int oldX = mScrollX; 6370 int oldY = mScrollY; 6371 mScrollX = x; 6372 mScrollY = y; 6373 if (oldX != mScrollX || oldY != mScrollY) { 6374 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6375 return true; 6376 } else { 6377 return false; 6378 } 6379 } 6380 6381 public void flingScroll(int vx, int vy) { 6382 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6383 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6384 invalidate(); 6385 } 6386 6387 private void doFling() { 6388 if (mVelocityTracker == null) { 6389 return; 6390 } 6391 int maxX = computeMaxScrollX(); 6392 int maxY = computeMaxScrollY(); 6393 6394 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6395 int vx = (int) mVelocityTracker.getXVelocity(); 6396 int vy = (int) mVelocityTracker.getYVelocity(); 6397 6398 int scrollX = mScrollX; 6399 int scrollY = mScrollY; 6400 int overscrollDistance = mOverscrollDistance; 6401 int overflingDistance = mOverflingDistance; 6402 6403 // Use the layer's scroll data if applicable. 6404 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6405 scrollX = mScrollingLayerRect.left; 6406 scrollY = mScrollingLayerRect.top; 6407 maxX = mScrollingLayerRect.right; 6408 maxY = mScrollingLayerRect.bottom; 6409 // No overscrolling for layers. 6410 overscrollDistance = overflingDistance = 0; 6411 } 6412 6413 if (mSnapScrollMode != SNAP_NONE) { 6414 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6415 vy = 0; 6416 } else { 6417 vx = 0; 6418 } 6419 } 6420 if (true /* EMG release: make our fling more like Maps' */) { 6421 // maps cuts their velocity in half 6422 vx = vx * 3 / 4; 6423 vy = vy * 3 / 4; 6424 } 6425 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6426 WebViewCore.resumePriority(); 6427 if (!mSelectingText) { 6428 WebViewCore.resumeUpdatePicture(mWebViewCore); 6429 } 6430 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6431 invalidate(); 6432 } 6433 return; 6434 } 6435 float currentVelocity = mScroller.getCurrVelocity(); 6436 float velocity = (float) Math.hypot(vx, vy); 6437 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6438 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6439 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6440 - Math.atan2(vy, vx))); 6441 final float circle = (float) (Math.PI) * 2.0f; 6442 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6443 vx += currentVelocity * mLastVelX / mLastVelocity; 6444 vy += currentVelocity * mLastVelY / mLastVelocity; 6445 velocity = (float) Math.hypot(vx, vy); 6446 if (DebugFlags.WEB_VIEW) { 6447 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6448 } 6449 } else if (DebugFlags.WEB_VIEW) { 6450 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6451 } 6452 } else if (DebugFlags.WEB_VIEW) { 6453 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6454 + " current=" + currentVelocity 6455 + " vx=" + vx + " vy=" + vy 6456 + " maxX=" + maxX + " maxY=" + maxY 6457 + " scrollX=" + scrollX + " scrollY=" + scrollY 6458 + " layer=" + mScrollingLayer); 6459 } 6460 6461 // Allow sloppy flings without overscrolling at the edges. 6462 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6463 vx = 0; 6464 } 6465 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6466 vy = 0; 6467 } 6468 6469 if (overscrollDistance < overflingDistance) { 6470 if ((vx > 0 && scrollX == -overscrollDistance) || 6471 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6472 vx = 0; 6473 } 6474 if ((vy > 0 && scrollY == -overscrollDistance) || 6475 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6476 vy = 0; 6477 } 6478 } 6479 6480 mLastVelX = vx; 6481 mLastVelY = vy; 6482 mLastVelocity = velocity; 6483 6484 // no horizontal overscroll if the content just fits 6485 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6486 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6487 // Duration is calculated based on velocity. With range boundaries and overscroll 6488 // we may not know how long the final animation will take. (Hence the deprecation 6489 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6490 // resumes during this effect we will take a performance hit. See computeScroll; 6491 // we resume webcore there when the animation is finished. 6492 final int time = mScroller.getDuration(); 6493 6494 // Suppress scrollbars for layer scrolling. 6495 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6496 awakenScrollBars(time); 6497 } 6498 6499 invalidate(); 6500 } 6501 6502 /** 6503 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6504 * in charge of installing this view to the view hierarchy. This view will 6505 * become visible when the user starts scrolling via touch and fade away if 6506 * the user does not interact with it. 6507 * <p/> 6508 * API version 3 introduces a built-in zoom mechanism that is shown 6509 * automatically by the MapView. This is the preferred approach for 6510 * showing the zoom UI. 6511 * 6512 * @deprecated The built-in zoom mechanism is preferred, see 6513 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6514 */ 6515 @Deprecated 6516 public View getZoomControls() { 6517 if (!getSettings().supportZoom()) { 6518 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6519 return null; 6520 } 6521 return mZoomManager.getExternalZoomPicker(); 6522 } 6523 6524 void dismissZoomControl() { 6525 mZoomManager.dismissZoomPicker(); 6526 } 6527 6528 float getDefaultZoomScale() { 6529 return mZoomManager.getDefaultScale(); 6530 } 6531 6532 /** 6533 * @return TRUE if the WebView can be zoomed in. 6534 */ 6535 public boolean canZoomIn() { 6536 return mZoomManager.canZoomIn(); 6537 } 6538 6539 /** 6540 * @return TRUE if the WebView can be zoomed out. 6541 */ 6542 public boolean canZoomOut() { 6543 return mZoomManager.canZoomOut(); 6544 } 6545 6546 /** 6547 * Perform zoom in in the webview 6548 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6549 */ 6550 public boolean zoomIn() { 6551 return mZoomManager.zoomIn(); 6552 } 6553 6554 /** 6555 * Perform zoom out in the webview 6556 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6557 */ 6558 public boolean zoomOut() { 6559 return mZoomManager.zoomOut(); 6560 } 6561 6562 private void updateSelection() { 6563 if (mNativeClass == 0) { 6564 return; 6565 } 6566 // mLastTouchX and mLastTouchY are the point in the current viewport 6567 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6568 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6569 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6570 contentX + mNavSlop, contentY + mNavSlop); 6571 nativeSelectBestAt(rect); 6572 mInitialHitTestResult = hitTestResult(null); 6573 } 6574 6575 /** 6576 * Scroll the focused text field/area to match the WebTextView 6577 * @param xPercent New x position of the WebTextView from 0 to 1. 6578 * @param y New y position of the WebTextView in view coordinates 6579 */ 6580 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 6581 if (!inEditingMode() || mWebViewCore == null) { 6582 return; 6583 } 6584 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 6585 // Since this position is relative to the top of the text input 6586 // field, we do not need to take the title bar's height into 6587 // consideration. 6588 viewToContentDimension(y), 6589 new Float(xPercent)); 6590 } 6591 6592 /** 6593 * Set our starting point and time for a drag from the WebTextView. 6594 */ 6595 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6596 if (!inEditingMode()) { 6597 return; 6598 } 6599 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 6600 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 6601 mLastTouchTime = eventTime; 6602 if (!mScroller.isFinished()) { 6603 abortAnimation(); 6604 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6605 } 6606 mSnapScrollMode = SNAP_NONE; 6607 mVelocityTracker = VelocityTracker.obtain(); 6608 mTouchMode = TOUCH_DRAG_START_MODE; 6609 } 6610 6611 /** 6612 * Given a motion event from the WebTextView, set its location to our 6613 * coordinates, and handle the event. 6614 */ 6615 /*package*/ boolean textFieldDrag(MotionEvent event) { 6616 if (!inEditingMode()) { 6617 return false; 6618 } 6619 mDragFromTextInput = true; 6620 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6621 (float) (mWebTextView.getTop() - mScrollY)); 6622 boolean result = onTouchEvent(event); 6623 mDragFromTextInput = false; 6624 return result; 6625 } 6626 6627 /** 6628 * Due a touch up from a WebTextView. This will be handled by webkit to 6629 * change the selection. 6630 * @param event MotionEvent in the WebTextView's coordinates. 6631 */ 6632 /*package*/ void touchUpOnTextField(MotionEvent event) { 6633 if (!inEditingMode()) { 6634 return; 6635 } 6636 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6637 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6638 nativeMotionUp(x, y, mNavSlop); 6639 } 6640 6641 /** 6642 * Called when pressing the center key or trackball on a textfield. 6643 */ 6644 /*package*/ void centerKeyPressOnTextField() { 6645 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6646 nativeCursorNodePointer()); 6647 } 6648 6649 private void doShortPress() { 6650 if (mNativeClass == 0) { 6651 return; 6652 } 6653 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6654 return; 6655 } 6656 mTouchMode = TOUCH_DONE_MODE; 6657 switchOutDrawHistory(); 6658 // mLastTouchX and mLastTouchY are the point in the current viewport 6659 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6660 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6661 if (getSettings().supportTouchOnly()) { 6662 removeTouchHighlight(false); 6663 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6664 // use "0" as generation id to inform WebKit to use the same x/y as 6665 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6666 touchUpData.mMoveGeneration = 0; 6667 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6668 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6669 WebViewCore.MotionUpData motionUpData = new WebViewCore 6670 .MotionUpData(); 6671 motionUpData.mFrame = nativeCacheHitFramePointer(); 6672 motionUpData.mNode = nativeCacheHitNodePointer(); 6673 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6674 motionUpData.mX = contentX; 6675 motionUpData.mY = contentY; 6676 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6677 motionUpData); 6678 } else { 6679 doMotionUp(contentX, contentY); 6680 } 6681 } 6682 6683 private void doMotionUp(int contentX, int contentY) { 6684 if (nativeMotionUp(contentX, contentY, mNavSlop) && mLogEvent) { 6685 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6686 } 6687 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6688 playSoundEffect(SoundEffectConstants.CLICK); 6689 } 6690 } 6691 6692 /* 6693 * Return true if the view (Plugin) is fully visible and maximized inside 6694 * the WebView. 6695 */ 6696 boolean isPluginFitOnScreen(ViewManager.ChildView view) { 6697 final int viewWidth = getViewWidth(); 6698 final int viewHeight = getViewHeightWithTitle(); 6699 float scale = Math.min((float) viewWidth / view.width, (float) viewHeight / view.height); 6700 scale = mZoomManager.computeScaleWithLimits(scale); 6701 return !mZoomManager.willScaleTriggerZoom(scale) 6702 && contentToViewX(view.x) >= mScrollX 6703 && contentToViewX(view.x + view.width) <= mScrollX + viewWidth 6704 && contentToViewY(view.y) >= mScrollY 6705 && contentToViewY(view.y + view.height) <= mScrollY + viewHeight; 6706 } 6707 6708 /* 6709 * Maximize and center the rectangle, specified in the document coordinate 6710 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6711 * animated scroll to center it. If the zoom needs to be changed, find the 6712 * zoom center and do a smooth zoom transition. 6713 */ 6714 void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 6715 int viewWidth = getViewWidth(); 6716 int viewHeight = getViewHeightWithTitle(); 6717 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 6718 / docHeight); 6719 scale = mZoomManager.computeScaleWithLimits(scale); 6720 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6721 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 6722 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 6723 true, 0); 6724 } else { 6725 float actualScale = mZoomManager.getScale(); 6726 float oldScreenX = docX * actualScale - mScrollX; 6727 float rectViewX = docX * scale; 6728 float rectViewWidth = docWidth * scale; 6729 float newMaxWidth = mContentWidth * scale; 6730 float newScreenX = (viewWidth - rectViewWidth) / 2; 6731 // pin the newX to the WebView 6732 if (newScreenX > rectViewX) { 6733 newScreenX = rectViewX; 6734 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6735 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6736 } 6737 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6738 / (scale - actualScale); 6739 float oldScreenY = docY * actualScale + getTitleHeight() 6740 - mScrollY; 6741 float rectViewY = docY * scale + getTitleHeight(); 6742 float rectViewHeight = docHeight * scale; 6743 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6744 float newScreenY = (viewHeight - rectViewHeight) / 2; 6745 // pin the newY to the WebView 6746 if (newScreenY > rectViewY) { 6747 newScreenY = rectViewY; 6748 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6749 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6750 } 6751 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6752 / (scale - actualScale); 6753 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6754 mZoomManager.startZoomAnimation(scale, false); 6755 } 6756 } 6757 6758 // Called by JNI to handle a touch on a node representing an email address, 6759 // address, or phone number 6760 private void overrideLoading(String url) { 6761 mCallbackProxy.uiOverrideUrlLoading(url); 6762 } 6763 6764 @Override 6765 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6766 // FIXME: If a subwindow is showing find, and the user touches the 6767 // background window, it can steal focus. 6768 if (mFindIsUp) return false; 6769 boolean result = false; 6770 if (inEditingMode()) { 6771 result = mWebTextView.requestFocus(direction, 6772 previouslyFocusedRect); 6773 } else { 6774 result = super.requestFocus(direction, previouslyFocusedRect); 6775 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6776 // For cases such as GMail, where we gain focus from a direction, 6777 // we want to move to the first available link. 6778 // FIXME: If there are no visible links, we may not want to 6779 int fakeKeyDirection = 0; 6780 switch(direction) { 6781 case View.FOCUS_UP: 6782 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6783 break; 6784 case View.FOCUS_DOWN: 6785 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6786 break; 6787 case View.FOCUS_LEFT: 6788 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6789 break; 6790 case View.FOCUS_RIGHT: 6791 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6792 break; 6793 default: 6794 return result; 6795 } 6796 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6797 navHandledKey(fakeKeyDirection, 1, true, 0); 6798 } 6799 } 6800 } 6801 return result; 6802 } 6803 6804 @Override 6805 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6806 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6807 6808 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6809 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6810 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6811 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6812 6813 int measuredHeight = heightSize; 6814 int measuredWidth = widthSize; 6815 6816 // Grab the content size from WebViewCore. 6817 int contentHeight = contentToViewDimension(mContentHeight); 6818 int contentWidth = contentToViewDimension(mContentWidth); 6819 6820// Log.d(LOGTAG, "------- measure " + heightMode); 6821 6822 if (heightMode != MeasureSpec.EXACTLY) { 6823 mHeightCanMeasure = true; 6824 measuredHeight = contentHeight; 6825 if (heightMode == MeasureSpec.AT_MOST) { 6826 // If we are larger than the AT_MOST height, then our height can 6827 // no longer be measured and we should scroll internally. 6828 if (measuredHeight > heightSize) { 6829 measuredHeight = heightSize; 6830 mHeightCanMeasure = false; 6831 } else if (measuredHeight < heightSize) { 6832 measuredHeight |= MEASURED_STATE_TOO_SMALL; 6833 } 6834 } 6835 } else { 6836 mHeightCanMeasure = false; 6837 } 6838 if (mNativeClass != 0) { 6839 nativeSetHeightCanMeasure(mHeightCanMeasure); 6840 } 6841 // For the width, always use the given size unless unspecified. 6842 if (widthMode == MeasureSpec.UNSPECIFIED) { 6843 mWidthCanMeasure = true; 6844 measuredWidth = contentWidth; 6845 } else { 6846 if (measuredWidth < contentWidth) { 6847 measuredWidth |= MEASURED_STATE_TOO_SMALL; 6848 } 6849 mWidthCanMeasure = false; 6850 } 6851 6852 synchronized (this) { 6853 setMeasuredDimension(measuredWidth, measuredHeight); 6854 } 6855 } 6856 6857 @Override 6858 public boolean requestChildRectangleOnScreen(View child, 6859 Rect rect, 6860 boolean immediate) { 6861 if (mNativeClass == 0) { 6862 return false; 6863 } 6864 // don't scroll while in zoom animation. When it is done, we will adjust 6865 // the necessary components (e.g., WebTextView if it is in editing mode) 6866 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6867 return false; 6868 } 6869 6870 rect.offset(child.getLeft() - child.getScrollX(), 6871 child.getTop() - child.getScrollY()); 6872 6873 Rect content = new Rect(viewToContentX(mScrollX), 6874 viewToContentY(mScrollY), 6875 viewToContentX(mScrollX + getWidth() 6876 - getVerticalScrollbarWidth()), 6877 viewToContentY(mScrollY + getViewHeightWithTitle())); 6878 content = nativeSubtractLayers(content); 6879 int screenTop = contentToViewY(content.top); 6880 int screenBottom = contentToViewY(content.bottom); 6881 int height = screenBottom - screenTop; 6882 int scrollYDelta = 0; 6883 6884 if (rect.bottom > screenBottom) { 6885 int oneThirdOfScreenHeight = height / 3; 6886 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6887 // If the rectangle is too tall to fit in the bottom two thirds 6888 // of the screen, place it at the top. 6889 scrollYDelta = rect.top - screenTop; 6890 } else { 6891 // If the rectangle will still fit on screen, we want its 6892 // top to be in the top third of the screen. 6893 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6894 } 6895 } else if (rect.top < screenTop) { 6896 scrollYDelta = rect.top - screenTop; 6897 } 6898 6899 int screenLeft = contentToViewX(content.left); 6900 int screenRight = contentToViewX(content.right); 6901 int width = screenRight - screenLeft; 6902 int scrollXDelta = 0; 6903 6904 if (rect.right > screenRight && rect.left > screenLeft) { 6905 if (rect.width() > width) { 6906 scrollXDelta += (rect.left - screenLeft); 6907 } else { 6908 scrollXDelta += (rect.right - screenRight); 6909 } 6910 } else if (rect.left < screenLeft) { 6911 scrollXDelta -= (screenLeft - rect.left); 6912 } 6913 6914 if ((scrollYDelta | scrollXDelta) != 0) { 6915 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6916 } 6917 6918 return false; 6919 } 6920 6921 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6922 String replace, int newStart, int newEnd) { 6923 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6924 arg.mReplace = replace; 6925 arg.mNewStart = newStart; 6926 arg.mNewEnd = newEnd; 6927 mTextGeneration++; 6928 arg.mTextGeneration = mTextGeneration; 6929 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6930 } 6931 6932 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6933 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6934 arg.mEvent = event; 6935 arg.mCurrentText = currentText; 6936 // Increase our text generation number, and pass it to webcore thread 6937 mTextGeneration++; 6938 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6939 // WebKit's document state is not saved until about to leave the page. 6940 // To make sure the host application, like Browser, has the up to date 6941 // document state when it goes to background, we force to save the 6942 // document state. 6943 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6944 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6945 cursorData(), 1000); 6946 } 6947 6948 /* package */ synchronized WebViewCore getWebViewCore() { 6949 return mWebViewCore; 6950 } 6951 6952 //------------------------------------------------------------------------- 6953 // Methods can be called from a separate thread, like WebViewCore 6954 // If it needs to call the View system, it has to send message. 6955 //------------------------------------------------------------------------- 6956 6957 /** 6958 * General handler to receive message coming from webkit thread 6959 */ 6960 class PrivateHandler extends Handler { 6961 @Override 6962 public void handleMessage(Message msg) { 6963 // exclude INVAL_RECT_MSG_ID since it is frequently output 6964 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6965 if (msg.what >= FIRST_PRIVATE_MSG_ID 6966 && msg.what <= LAST_PRIVATE_MSG_ID) { 6967 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6968 - FIRST_PRIVATE_MSG_ID]); 6969 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6970 && msg.what <= LAST_PACKAGE_MSG_ID) { 6971 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6972 - FIRST_PACKAGE_MSG_ID]); 6973 } else { 6974 Log.v(LOGTAG, Integer.toString(msg.what)); 6975 } 6976 } 6977 if (mWebViewCore == null) { 6978 // after WebView's destroy() is called, skip handling messages. 6979 return; 6980 } 6981 switch (msg.what) { 6982 case REMEMBER_PASSWORD: { 6983 mDatabase.setUsernamePassword( 6984 msg.getData().getString("host"), 6985 msg.getData().getString("username"), 6986 msg.getData().getString("password")); 6987 ((Message) msg.obj).sendToTarget(); 6988 break; 6989 } 6990 case NEVER_REMEMBER_PASSWORD: { 6991 mDatabase.setUsernamePassword( 6992 msg.getData().getString("host"), null, null); 6993 ((Message) msg.obj).sendToTarget(); 6994 break; 6995 } 6996 case PREVENT_DEFAULT_TIMEOUT: { 6997 // if timeout happens, cancel it so that it won't block UI 6998 // to continue handling touch events 6999 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7000 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7001 || (msg.arg1 == MotionEvent.ACTION_MOVE 7002 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7003 cancelWebCoreTouchEvent( 7004 viewToContentX((int) mLastTouchX + mScrollX), 7005 viewToContentY((int) mLastTouchY + mScrollY), 7006 true); 7007 } 7008 break; 7009 } 7010 case SCROLL_SELECT_TEXT: { 7011 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7012 mSentAutoScrollMessage = false; 7013 break; 7014 } 7015 if (mScrollingLayer == 0) { 7016 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7017 } else { 7018 mScrollingLayerRect.left += mAutoScrollX; 7019 mScrollingLayerRect.top += mAutoScrollY; 7020 nativeScrollLayer(mScrollingLayer, 7021 mScrollingLayerRect.left, 7022 mScrollingLayerRect.top); 7023 invalidate(); 7024 } 7025 sendEmptyMessageDelayed( 7026 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7027 break; 7028 } 7029 case SWITCH_TO_SHORTPRESS: { 7030 mInitialHitTestResult = null; // set by updateSelection() 7031 if (mTouchMode == TOUCH_INIT_MODE) { 7032 if (!getSettings().supportTouchOnly() 7033 && mPreventDefault != PREVENT_DEFAULT_YES) { 7034 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 7035 updateSelection(); 7036 } else { 7037 // set to TOUCH_SHORTPRESS_MODE so that it won't 7038 // trigger double tap any more 7039 mTouchMode = TOUCH_SHORTPRESS_MODE; 7040 } 7041 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 7042 mTouchMode = TOUCH_DONE_MODE; 7043 } 7044 break; 7045 } 7046 case SWITCH_TO_LONGPRESS: { 7047 if (getSettings().supportTouchOnly()) { 7048 removeTouchHighlight(false); 7049 } 7050 if (inFullScreenMode() || mDeferTouchProcess) { 7051 TouchEventData ted = new TouchEventData(); 7052 ted.mAction = WebViewCore.ACTION_LONGPRESS; 7053 ted.mPoints = new Point[1]; 7054 ted.mPoints[0] = new Point(viewToContentX((int) mLastTouchX + mScrollX), 7055 viewToContentY((int) mLastTouchY + mScrollY)); 7056 // metaState for long press is tricky. Should it be the 7057 // state when the press started or when the press was 7058 // released? Or some intermediary key state? For 7059 // simplicity for now, we don't set it. 7060 ted.mMetaState = 0; 7061 ted.mReprocess = mDeferTouchProcess; 7062 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7063 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 7064 mTouchMode = TOUCH_DONE_MODE; 7065 performLongClick(); 7066 } 7067 break; 7068 } 7069 case RELEASE_SINGLE_TAP: { 7070 doShortPress(); 7071 break; 7072 } 7073 case SCROLL_BY_MSG_ID: 7074 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 7075 break; 7076 case SYNC_SCROLL_TO_MSG_ID: 7077 if (mUserScroll) { 7078 // if user has scrolled explicitly, don't sync the 7079 // scroll position any more 7080 mUserScroll = false; 7081 break; 7082 } 7083 setContentScrollTo(msg.arg1, msg.arg2); 7084 break; 7085 case SCROLL_TO_MSG_ID: 7086 if (setContentScrollTo(msg.arg1, msg.arg2)) { 7087 // if we can't scroll to the exact position due to pin, 7088 // send a message to WebCore to re-scroll when we get a 7089 // new picture 7090 mUserScroll = false; 7091 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 7092 msg.arg1, msg.arg2); 7093 } 7094 break; 7095 case SPAWN_SCROLL_TO_MSG_ID: 7096 spawnContentScrollTo(msg.arg1, msg.arg2); 7097 break; 7098 case UPDATE_ZOOM_RANGE: { 7099 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7100 // mScrollX contains the new minPrefWidth 7101 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7102 break; 7103 } 7104 case REPLACE_BASE_CONTENT: { 7105 nativeReplaceBaseContent(msg.arg1); 7106 break; 7107 } 7108 case NEW_PICTURE_MSG_ID: { 7109 // called for new content 7110 mUserScroll = false; 7111 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7112 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion.getBounds()); 7113 final Point viewSize = draw.mViewSize; 7114 WebViewCore.ViewState viewState = draw.mViewState; 7115 boolean isPictureAfterFirstLayout = viewState != null; 7116 if (isPictureAfterFirstLayout) { 7117 // Reset the last sent data here since dealing with new page. 7118 mLastWidthSent = 0; 7119 mZoomManager.onFirstLayout(draw); 7120 if (!mDrawHistory) { 7121 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7122 // As we are on a new page, remove the WebTextView. This 7123 // is necessary for page loads driven by webkit, and in 7124 // particular when the user was on a password field, so 7125 // the WebTextView was visible. 7126 clearTextEntry(); 7127 } 7128 } 7129 7130 // We update the layout (i.e. request a layout from the 7131 // view system) if the last view size that we sent to 7132 // WebCore matches the view size of the picture we just 7133 // received in the fixed dimension. 7134 final boolean updateLayout = viewSize.x == mLastWidthSent 7135 && viewSize.y == mLastHeightSent; 7136 recordNewContentSize(draw.mContentSize.x, 7137 draw.mContentSize.y, updateLayout); 7138 if (DebugFlags.WEB_VIEW) { 7139 Rect b = draw.mInvalRegion.getBounds(); 7140 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 7141 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 7142 } 7143 invalidateContentRect(draw.mInvalRegion.getBounds()); 7144 7145 if (mPictureListener != null) { 7146 mPictureListener.onNewPicture(WebView.this, capturePicture()); 7147 } 7148 7149 // update the zoom information based on the new picture 7150 mZoomManager.onNewPicture(draw); 7151 7152 if (draw.mFocusSizeChanged && inEditingMode()) { 7153 mFocusSizeChanged = true; 7154 } 7155 if (isPictureAfterFirstLayout) { 7156 mViewManager.postReadyToDrawAll(); 7157 } 7158 break; 7159 } 7160 case WEBCORE_INITIALIZED_MSG_ID: 7161 // nativeCreate sets mNativeClass to a non-zero value 7162 nativeCreate(msg.arg1); 7163 break; 7164 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7165 // Make sure that the textfield is currently focused 7166 // and representing the same node as the pointer. 7167 if (inEditingMode() && 7168 mWebTextView.isSameTextField(msg.arg1)) { 7169 if (msg.getData().getBoolean("password")) { 7170 Spannable text = (Spannable) mWebTextView.getText(); 7171 int start = Selection.getSelectionStart(text); 7172 int end = Selection.getSelectionEnd(text); 7173 mWebTextView.setInPassword(true); 7174 // Restore the selection, which may have been 7175 // ruined by setInPassword. 7176 Spannable pword = 7177 (Spannable) mWebTextView.getText(); 7178 Selection.setSelection(pword, start, end); 7179 // If the text entry has created more events, ignore 7180 // this one. 7181 } else if (msg.arg2 == mTextGeneration) { 7182 String text = (String) msg.obj; 7183 if (null == text) { 7184 text = ""; 7185 } 7186 mWebTextView.setTextAndKeepSelection(text); 7187 } 7188 } 7189 break; 7190 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 7191 displaySoftKeyboard(true); 7192 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 7193 case UPDATE_TEXT_SELECTION_MSG_ID: 7194 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7195 (WebViewCore.TextSelectionData) msg.obj); 7196 break; 7197 case FORM_DID_BLUR: 7198 if (inEditingMode() 7199 && mWebTextView.isSameTextField(msg.arg1)) { 7200 hideSoftKeyboard(); 7201 } 7202 break; 7203 case RETURN_LABEL: 7204 if (inEditingMode() 7205 && mWebTextView.isSameTextField(msg.arg1)) { 7206 mWebTextView.setHint((String) msg.obj); 7207 InputMethodManager imm 7208 = InputMethodManager.peekInstance(); 7209 // The hint is propagated to the IME in 7210 // onCreateInputConnection. If the IME is already 7211 // active, restart it so that its hint text is updated. 7212 if (imm != null && imm.isActive(mWebTextView)) { 7213 imm.restartInput(mWebTextView); 7214 } 7215 } 7216 break; 7217 case UNHANDLED_NAV_KEY: 7218 navHandledKey(msg.arg1, 1, false, 0); 7219 break; 7220 case UPDATE_TEXT_ENTRY_MSG_ID: 7221 // this is sent after finishing resize in WebViewCore. Make 7222 // sure the text edit box is still on the screen. 7223 if (inEditingMode() && nativeCursorIsTextInput()) { 7224 mWebTextView.bringIntoView(); 7225 rebuildWebTextView(); 7226 } 7227 break; 7228 case CLEAR_TEXT_ENTRY: 7229 clearTextEntry(); 7230 break; 7231 case INVAL_RECT_MSG_ID: { 7232 Rect r = (Rect)msg.obj; 7233 if (r == null) { 7234 invalidate(); 7235 } else { 7236 // we need to scale r from content into view coords, 7237 // which viewInvalidate() does for us 7238 viewInvalidate(r.left, r.top, r.right, r.bottom); 7239 } 7240 break; 7241 } 7242 case REQUEST_FORM_DATA: 7243 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7244 if (mWebTextView.isSameTextField(msg.arg1)) { 7245 mWebTextView.setAdapterCustom(adapter); 7246 } 7247 break; 7248 case RESUME_WEBCORE_PRIORITY: 7249 WebViewCore.resumePriority(); 7250 WebViewCore.resumeUpdatePicture(mWebViewCore); 7251 break; 7252 7253 case LONG_PRESS_CENTER: 7254 // as this is shared by keydown and trackballdown, reset all 7255 // the states 7256 mGotCenterDown = false; 7257 mTrackballDown = false; 7258 performLongClick(); 7259 break; 7260 7261 case WEBCORE_NEED_TOUCH_EVENTS: 7262 mForwardTouchEvents = (msg.arg1 != 0); 7263 break; 7264 7265 case PREVENT_TOUCH_ID: 7266 if (inFullScreenMode()) { 7267 break; 7268 } 7269 if (msg.obj == null) { 7270 if (msg.arg1 == MotionEvent.ACTION_DOWN 7271 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7272 // if prevent default is called from WebCore, UI 7273 // will not handle the rest of the touch events any 7274 // more. 7275 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7276 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7277 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7278 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7279 // the return for the first ACTION_MOVE will decide 7280 // whether UI will handle touch or not. Currently no 7281 // support for alternating prevent default 7282 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7283 : PREVENT_DEFAULT_NO; 7284 } 7285 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7286 mTouchHighlightRegion.setEmpty(); 7287 } 7288 } else if (msg.arg2 == 0) { 7289 // prevent default is not called in WebCore, so the 7290 // message needs to be reprocessed in UI 7291 TouchEventData ted = (TouchEventData) msg.obj; 7292 7293 if (ted.mPoints.length > 1) { // for multi-touch. 7294 handleMultiTouchInWebView(ted.mMotionEvent); 7295 break; 7296 } 7297 7298 // Following is for single touch. 7299 switch (ted.mAction) { 7300 case MotionEvent.ACTION_DOWN: 7301 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 7302 - mScrollX; 7303 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 7304 - mScrollY; 7305 mDeferTouchMode = TOUCH_INIT_MODE; 7306 break; 7307 case MotionEvent.ACTION_MOVE: { 7308 // no snapping in defer process 7309 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 7310 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 7311 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7312 mDeferTouchMode = TOUCH_DRAG_MODE; 7313 mLastDeferTouchX = x; 7314 mLastDeferTouchY = y; 7315 startScrollingLayer(x, y); 7316 startDrag(); 7317 } 7318 int deltaX = pinLocX((int) (mScrollX 7319 + mLastDeferTouchX - x)) 7320 - mScrollX; 7321 int deltaY = pinLocY((int) (mScrollY 7322 + mLastDeferTouchY - y)) 7323 - mScrollY; 7324 doDrag(deltaX, deltaY); 7325 if (deltaX != 0) mLastDeferTouchX = x; 7326 if (deltaY != 0) mLastDeferTouchY = y; 7327 break; 7328 } 7329 case MotionEvent.ACTION_UP: 7330 case MotionEvent.ACTION_CANCEL: 7331 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7332 // no fling in defer process 7333 mScroller.springBack(mScrollX, mScrollY, 0, 7334 computeMaxScrollX(), 0, 7335 computeMaxScrollY()); 7336 invalidate(); 7337 WebViewCore.resumePriority(); 7338 WebViewCore.resumeUpdatePicture(mWebViewCore); 7339 } 7340 mDeferTouchMode = TOUCH_DONE_MODE; 7341 break; 7342 case WebViewCore.ACTION_DOUBLETAP: 7343 // doDoubleTap() needs mLastTouchX/Y as anchor 7344 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 7345 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 7346 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7347 mDeferTouchMode = TOUCH_DONE_MODE; 7348 break; 7349 case WebViewCore.ACTION_LONGPRESS: 7350 HitTestResult hitTest = getHitTestResult(); 7351 if (hitTest != null && hitTest.mType 7352 != HitTestResult.UNKNOWN_TYPE) { 7353 performLongClick(); 7354 } 7355 mDeferTouchMode = TOUCH_DONE_MODE; 7356 break; 7357 } 7358 } 7359 break; 7360 7361 case REQUEST_KEYBOARD: 7362 if (msg.arg1 == 0) { 7363 hideSoftKeyboard(); 7364 } else { 7365 displaySoftKeyboard(false); 7366 } 7367 break; 7368 7369 case FIND_AGAIN: 7370 // Ignore if find has been dismissed. 7371 if (mFindIsUp && mFindCallback != null) { 7372 mFindCallback.findAll(); 7373 } 7374 break; 7375 7376 case DRAG_HELD_MOTIONLESS: 7377 mHeldMotionless = MOTIONLESS_TRUE; 7378 invalidate(); 7379 // fall through to keep scrollbars awake 7380 7381 case AWAKEN_SCROLL_BARS: 7382 if (mTouchMode == TOUCH_DRAG_MODE 7383 && mHeldMotionless == MOTIONLESS_TRUE) { 7384 awakenScrollBars(ViewConfiguration 7385 .getScrollDefaultDelay(), false); 7386 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7387 .obtainMessage(AWAKEN_SCROLL_BARS), 7388 ViewConfiguration.getScrollDefaultDelay()); 7389 } 7390 break; 7391 7392 case DO_MOTION_UP: 7393 doMotionUp(msg.arg1, msg.arg2); 7394 break; 7395 7396 case SHOW_FULLSCREEN: { 7397 View view = (View) msg.obj; 7398 int npp = msg.arg1; 7399 7400 if (inFullScreenMode()) { 7401 Log.w(LOGTAG, "Should not have another full screen."); 7402 dismissFullScreenMode(); 7403 } 7404 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7405 mFullScreenHolder.setContentView(view); 7406 mFullScreenHolder.setCancelable(false); 7407 mFullScreenHolder.setCanceledOnTouchOutside(false); 7408 mFullScreenHolder.show(); 7409 7410 break; 7411 } 7412 case HIDE_FULLSCREEN: 7413 dismissFullScreenMode(); 7414 break; 7415 7416 case DOM_FOCUS_CHANGED: 7417 if (inEditingMode()) { 7418 nativeClearCursor(); 7419 rebuildWebTextView(); 7420 } 7421 break; 7422 7423 case SHOW_RECT_MSG_ID: { 7424 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7425 int x = mScrollX; 7426 int left = contentToViewX(data.mLeft); 7427 int width = contentToViewDimension(data.mWidth); 7428 int maxWidth = contentToViewDimension(data.mContentWidth); 7429 int viewWidth = getViewWidth(); 7430 if (width < viewWidth) { 7431 // center align 7432 x += left + width / 2 - mScrollX - viewWidth / 2; 7433 } else { 7434 x += (int) (left + data.mXPercentInDoc * width 7435 - mScrollX - data.mXPercentInView * viewWidth); 7436 } 7437 if (DebugFlags.WEB_VIEW) { 7438 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7439 width + ",maxWidth=" + maxWidth + 7440 ",viewWidth=" + viewWidth + ",x=" 7441 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7442 ",xPercentInView=" + data.mXPercentInView+ ")"); 7443 } 7444 // use the passing content width to cap x as the current 7445 // mContentWidth may not be updated yet 7446 x = Math.max(0, 7447 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7448 int top = contentToViewY(data.mTop); 7449 int height = contentToViewDimension(data.mHeight); 7450 int maxHeight = contentToViewDimension(data.mContentHeight); 7451 int viewHeight = getViewHeight(); 7452 int y = (int) (top + data.mYPercentInDoc * height - 7453 data.mYPercentInView * viewHeight); 7454 if (DebugFlags.WEB_VIEW) { 7455 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7456 height + ",maxHeight=" + maxHeight + 7457 ",viewHeight=" + viewHeight + ",y=" 7458 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7459 ",yPercentInView=" + data.mYPercentInView+ ")"); 7460 } 7461 // use the passing content height to cap y as the current 7462 // mContentHeight may not be updated yet 7463 y = Math.max(0, 7464 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7465 // We need to take into account the visible title height 7466 // when scrolling since y is an absolute view position. 7467 y = Math.max(0, y - getVisibleTitleHeight()); 7468 scrollTo(x, y); 7469 } 7470 break; 7471 7472 case CENTER_FIT_RECT: 7473 Rect r = (Rect)msg.obj; 7474 centerFitRect(r.left, r.top, r.width(), r.height()); 7475 break; 7476 7477 case SET_SCROLLBAR_MODES: 7478 mHorizontalScrollBarMode = msg.arg1; 7479 mVerticalScrollBarMode = msg.arg2; 7480 break; 7481 7482 case SELECTION_STRING_CHANGED: 7483 if (mAccessibilityInjector != null) { 7484 String selectionString = (String) msg.obj; 7485 mAccessibilityInjector.onSelectionStringChange(selectionString); 7486 } 7487 break; 7488 7489 case SET_TOUCH_HIGHLIGHT_RECTS: 7490 invalidate(mTouchHighlightRegion.getBounds()); 7491 mTouchHighlightRegion.setEmpty(); 7492 if (msg.obj != null) { 7493 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7494 for (Rect rect : rects) { 7495 Rect viewRect = contentToViewRect(rect); 7496 // some sites, like stories in nytimes.com, set 7497 // mouse event handler in the top div. It is not 7498 // user friendly to highlight the div if it covers 7499 // more than half of the screen. 7500 if (viewRect.width() < getWidth() >> 1 7501 || viewRect.height() < getHeight() >> 1) { 7502 mTouchHighlightRegion.union(viewRect); 7503 invalidate(viewRect); 7504 } else { 7505 Log.w(LOGTAG, "Skip the huge selection rect:" 7506 + viewRect); 7507 } 7508 } 7509 } 7510 break; 7511 7512 case SAVE_WEBARCHIVE_FINISHED: 7513 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7514 if (saveMessage.mCallback != null) { 7515 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7516 } 7517 break; 7518 7519 case SET_AUTOFILLABLE: 7520 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7521 if (mWebTextView != null) { 7522 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7523 rebuildWebTextView(); 7524 } 7525 break; 7526 7527 case AUTOFILL_COMPLETE: 7528 if (mWebTextView != null) { 7529 // Clear the WebTextView adapter when AutoFill finishes 7530 // so that the drop down gets cleared. 7531 mWebTextView.setAdapterCustom(null); 7532 } 7533 break; 7534 7535 default: 7536 super.handleMessage(msg); 7537 break; 7538 } 7539 } 7540 } 7541 7542 /** 7543 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7544 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7545 */ 7546 private void updateTextSelectionFromMessage(int nodePointer, 7547 int textGeneration, WebViewCore.TextSelectionData data) { 7548 if (inEditingMode() 7549 && mWebTextView.isSameTextField(nodePointer) 7550 && textGeneration == mTextGeneration) { 7551 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7552 } 7553 } 7554 7555 // Class used to use a dropdown for a <select> element 7556 private class InvokeListBox implements Runnable { 7557 // Whether the listbox allows multiple selection. 7558 private boolean mMultiple; 7559 // Passed in to a list with multiple selection to tell 7560 // which items are selected. 7561 private int[] mSelectedArray; 7562 // Passed in to a list with single selection to tell 7563 // where the initial selection is. 7564 private int mSelection; 7565 7566 private Container[] mContainers; 7567 7568 // Need these to provide stable ids to my ArrayAdapter, 7569 // which normally does not have stable ids. (Bug 1250098) 7570 private class Container extends Object { 7571 /** 7572 * Possible values for mEnabled. Keep in sync with OptionStatus in 7573 * WebViewCore.cpp 7574 */ 7575 final static int OPTGROUP = -1; 7576 final static int OPTION_DISABLED = 0; 7577 final static int OPTION_ENABLED = 1; 7578 7579 String mString; 7580 int mEnabled; 7581 int mId; 7582 7583 public String toString() { 7584 return mString; 7585 } 7586 } 7587 7588 /** 7589 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7590 * and allow filtering. 7591 */ 7592 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7593 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7594 super(context, 7595 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7596 com.android.internal.R.layout.select_dialog_singlechoice, 7597 objects); 7598 } 7599 7600 @Override 7601 public View getView(int position, View convertView, 7602 ViewGroup parent) { 7603 // Always pass in null so that we will get a new CheckedTextView 7604 // Otherwise, an item which was previously used as an <optgroup> 7605 // element (i.e. has no check), could get used as an <option> 7606 // element, which needs a checkbox/radio, but it would not have 7607 // one. 7608 convertView = super.getView(position, null, parent); 7609 Container c = item(position); 7610 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7611 // ListView does not draw dividers between disabled and 7612 // enabled elements. Use a LinearLayout to provide dividers 7613 LinearLayout layout = new LinearLayout(mContext); 7614 layout.setOrientation(LinearLayout.VERTICAL); 7615 if (position > 0) { 7616 View dividerTop = new View(mContext); 7617 dividerTop.setBackgroundResource( 7618 android.R.drawable.divider_horizontal_bright); 7619 layout.addView(dividerTop); 7620 } 7621 7622 if (Container.OPTGROUP == c.mEnabled) { 7623 // Currently select_dialog_multichoice and 7624 // select_dialog_singlechoice are CheckedTextViews. If 7625 // that changes, the class cast will no longer be valid. 7626 Assert.assertTrue( 7627 convertView instanceof CheckedTextView); 7628 ((CheckedTextView) convertView).setCheckMarkDrawable( 7629 null); 7630 } else { 7631 // c.mEnabled == Container.OPTION_DISABLED 7632 // Draw the disabled element in a disabled state. 7633 convertView.setEnabled(false); 7634 } 7635 7636 layout.addView(convertView); 7637 if (position < getCount() - 1) { 7638 View dividerBottom = new View(mContext); 7639 dividerBottom.setBackgroundResource( 7640 android.R.drawable.divider_horizontal_bright); 7641 layout.addView(dividerBottom); 7642 } 7643 return layout; 7644 } 7645 return convertView; 7646 } 7647 7648 @Override 7649 public boolean hasStableIds() { 7650 // AdapterView's onChanged method uses this to determine whether 7651 // to restore the old state. Return false so that the old (out 7652 // of date) state does not replace the new, valid state. 7653 return false; 7654 } 7655 7656 private Container item(int position) { 7657 if (position < 0 || position >= getCount()) { 7658 return null; 7659 } 7660 return (Container) getItem(position); 7661 } 7662 7663 @Override 7664 public long getItemId(int position) { 7665 Container item = item(position); 7666 if (item == null) { 7667 return -1; 7668 } 7669 return item.mId; 7670 } 7671 7672 @Override 7673 public boolean areAllItemsEnabled() { 7674 return false; 7675 } 7676 7677 @Override 7678 public boolean isEnabled(int position) { 7679 Container item = item(position); 7680 if (item == null) { 7681 return false; 7682 } 7683 return Container.OPTION_ENABLED == item.mEnabled; 7684 } 7685 } 7686 7687 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7688 mMultiple = true; 7689 mSelectedArray = selected; 7690 7691 int length = array.length; 7692 mContainers = new Container[length]; 7693 for (int i = 0; i < length; i++) { 7694 mContainers[i] = new Container(); 7695 mContainers[i].mString = array[i]; 7696 mContainers[i].mEnabled = enabled[i]; 7697 mContainers[i].mId = i; 7698 } 7699 } 7700 7701 private InvokeListBox(String[] array, int[] enabled, int selection) { 7702 mSelection = selection; 7703 mMultiple = false; 7704 7705 int length = array.length; 7706 mContainers = new Container[length]; 7707 for (int i = 0; i < length; i++) { 7708 mContainers[i] = new Container(); 7709 mContainers[i].mString = array[i]; 7710 mContainers[i].mEnabled = enabled[i]; 7711 mContainers[i].mId = i; 7712 } 7713 } 7714 7715 /* 7716 * Whenever the data set changes due to filtering, this class ensures 7717 * that the checked item remains checked. 7718 */ 7719 private class SingleDataSetObserver extends DataSetObserver { 7720 private long mCheckedId; 7721 private ListView mListView; 7722 private Adapter mAdapter; 7723 7724 /* 7725 * Create a new observer. 7726 * @param id The ID of the item to keep checked. 7727 * @param l ListView for getting and clearing the checked states 7728 * @param a Adapter for getting the IDs 7729 */ 7730 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7731 mCheckedId = id; 7732 mListView = l; 7733 mAdapter = a; 7734 } 7735 7736 public void onChanged() { 7737 // The filter may have changed which item is checked. Find the 7738 // item that the ListView thinks is checked. 7739 int position = mListView.getCheckedItemPosition(); 7740 long id = mAdapter.getItemId(position); 7741 if (mCheckedId != id) { 7742 // Clear the ListView's idea of the checked item, since 7743 // it is incorrect 7744 mListView.clearChoices(); 7745 // Search for mCheckedId. If it is in the filtered list, 7746 // mark it as checked 7747 int count = mAdapter.getCount(); 7748 for (int i = 0; i < count; i++) { 7749 if (mAdapter.getItemId(i) == mCheckedId) { 7750 mListView.setItemChecked(i, true); 7751 break; 7752 } 7753 } 7754 } 7755 } 7756 7757 public void onInvalidate() {} 7758 } 7759 7760 public void run() { 7761 final ListView listView = (ListView) LayoutInflater.from(mContext) 7762 .inflate(com.android.internal.R.layout.select_dialog, null); 7763 final MyArrayListAdapter adapter = new 7764 MyArrayListAdapter(mContext, mContainers, mMultiple); 7765 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7766 .setView(listView).setCancelable(true) 7767 .setInverseBackgroundForced(true); 7768 7769 if (mMultiple) { 7770 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7771 public void onClick(DialogInterface dialog, int which) { 7772 mWebViewCore.sendMessage( 7773 EventHub.LISTBOX_CHOICES, 7774 adapter.getCount(), 0, 7775 listView.getCheckedItemPositions()); 7776 }}); 7777 b.setNegativeButton(android.R.string.cancel, 7778 new DialogInterface.OnClickListener() { 7779 public void onClick(DialogInterface dialog, int which) { 7780 mWebViewCore.sendMessage( 7781 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7782 }}); 7783 } 7784 mListBoxDialog = b.create(); 7785 listView.setAdapter(adapter); 7786 listView.setFocusableInTouchMode(true); 7787 // There is a bug (1250103) where the checks in a ListView with 7788 // multiple items selected are associated with the positions, not 7789 // the ids, so the items do not properly retain their checks when 7790 // filtered. Do not allow filtering on multiple lists until 7791 // that bug is fixed. 7792 7793 listView.setTextFilterEnabled(!mMultiple); 7794 if (mMultiple) { 7795 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7796 int length = mSelectedArray.length; 7797 for (int i = 0; i < length; i++) { 7798 listView.setItemChecked(mSelectedArray[i], true); 7799 } 7800 } else { 7801 listView.setOnItemClickListener(new OnItemClickListener() { 7802 public void onItemClick(AdapterView parent, View v, 7803 int position, long id) { 7804 // Rather than sending the message right away, send it 7805 // after the page regains focus. 7806 mListBoxMessage = Message.obtain(null, 7807 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 7808 mListBoxDialog.dismiss(); 7809 mListBoxDialog = null; 7810 } 7811 }); 7812 if (mSelection != -1) { 7813 listView.setSelection(mSelection); 7814 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7815 listView.setItemChecked(mSelection, true); 7816 DataSetObserver observer = new SingleDataSetObserver( 7817 adapter.getItemId(mSelection), listView, adapter); 7818 adapter.registerDataSetObserver(observer); 7819 } 7820 } 7821 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7822 public void onCancel(DialogInterface dialog) { 7823 mWebViewCore.sendMessage( 7824 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7825 mListBoxDialog = null; 7826 } 7827 }); 7828 mListBoxDialog.show(); 7829 } 7830 } 7831 7832 private Message mListBoxMessage; 7833 7834 /* 7835 * Request a dropdown menu for a listbox with multiple selection. 7836 * 7837 * @param array Labels for the listbox. 7838 * @param enabledArray State for each element in the list. See static 7839 * integers in Container class. 7840 * @param selectedArray Which positions are initally selected. 7841 */ 7842 void requestListBox(String[] array, int[] enabledArray, int[] 7843 selectedArray) { 7844 mPrivateHandler.post( 7845 new InvokeListBox(array, enabledArray, selectedArray)); 7846 } 7847 7848 /* 7849 * Request a dropdown menu for a listbox with single selection or a single 7850 * <select> element. 7851 * 7852 * @param array Labels for the listbox. 7853 * @param enabledArray State for each element in the list. See static 7854 * integers in Container class. 7855 * @param selection Which position is initally selected. 7856 */ 7857 void requestListBox(String[] array, int[] enabledArray, int selection) { 7858 mPrivateHandler.post( 7859 new InvokeListBox(array, enabledArray, selection)); 7860 } 7861 7862 // called by JNI 7863 private void sendMoveFocus(int frame, int node) { 7864 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7865 new WebViewCore.CursorData(frame, node, 0, 0)); 7866 } 7867 7868 // called by JNI 7869 private void sendMoveMouse(int frame, int node, int x, int y) { 7870 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7871 new WebViewCore.CursorData(frame, node, x, y)); 7872 } 7873 7874 /* 7875 * Send a mouse move event to the webcore thread. 7876 * 7877 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7878 * which wants key events, but it is not the focus. This 7879 * will make the visual appear as though nothing is in 7880 * focus. Remove the WebTextView, if present, and stop 7881 * drawing the blinking caret. 7882 * called by JNI 7883 */ 7884 private void sendMoveMouseIfLatest(boolean removeFocus) { 7885 if (removeFocus) { 7886 clearTextEntry(); 7887 } 7888 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7889 cursorData()); 7890 } 7891 7892 /* 7893 * Called from JNI when the cursor has moved. This method 7894 * sends a message to the WebCore requesting the given 7895 * nodePtr in the given framePrt to be selected which will 7896 * result in firing an accessibility event announing its 7897 * content. 7898 * 7899 * Note: Accessibility support. 7900 */ 7901 @SuppressWarnings("unused") 7902 // called from JNI 7903 private void sendMoveSelection(int framePtr, int nodePtr) { 7904 if (AccessibilityManager.getInstance(mContext).isEnabled() 7905 && mAccessibilityInjector != null) { 7906 mWebViewCore.sendMessage(EventHub.MOVE_SELECTION, framePtr, nodePtr); 7907 } 7908 } 7909 7910 // called by JNI 7911 private void sendMotionUp(int touchGeneration, 7912 int frame, int node, int x, int y) { 7913 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7914 touchUpData.mMoveGeneration = touchGeneration; 7915 touchUpData.mFrame = frame; 7916 touchUpData.mNode = node; 7917 touchUpData.mX = x; 7918 touchUpData.mY = y; 7919 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7920 } 7921 7922 7923 private int getScaledMaxXScroll() { 7924 int width; 7925 if (mHeightCanMeasure == false) { 7926 width = getViewWidth() / 4; 7927 } else { 7928 Rect visRect = new Rect(); 7929 calcOurVisibleRect(visRect); 7930 width = visRect.width() / 2; 7931 } 7932 // FIXME the divisor should be retrieved from somewhere 7933 return viewToContentX(width); 7934 } 7935 7936 private int getScaledMaxYScroll() { 7937 int height; 7938 if (mHeightCanMeasure == false) { 7939 height = getViewHeight() / 4; 7940 } else { 7941 Rect visRect = new Rect(); 7942 calcOurVisibleRect(visRect); 7943 height = visRect.height() / 2; 7944 } 7945 // FIXME the divisor should be retrieved from somewhere 7946 // the closest thing today is hard-coded into ScrollView.java 7947 // (from ScrollView.java, line 363) int maxJump = height/2; 7948 return Math.round(height * mZoomManager.getInvScale()); 7949 } 7950 7951 /** 7952 * Called by JNI to invalidate view 7953 */ 7954 private void viewInvalidate() { 7955 invalidate(); 7956 } 7957 7958 /** 7959 * Pass the key directly to the page. This assumes that 7960 * nativePageShouldHandleShiftAndArrows() returned true. 7961 */ 7962 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 7963 int keyEventAction; 7964 int eventHubAction; 7965 if (down) { 7966 keyEventAction = KeyEvent.ACTION_DOWN; 7967 eventHubAction = EventHub.KEY_DOWN; 7968 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7969 } else { 7970 keyEventAction = KeyEvent.ACTION_UP; 7971 eventHubAction = EventHub.KEY_UP; 7972 } 7973 7974 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7975 1, (metaState & KeyEvent.META_SHIFT_ON) 7976 | (metaState & KeyEvent.META_ALT_ON) 7977 | (metaState & KeyEvent.META_SYM_ON) 7978 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 7979 mWebViewCore.sendMessage(eventHubAction, event); 7980 } 7981 7982 // return true if the key was handled 7983 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7984 long time) { 7985 if (mNativeClass == 0) { 7986 return false; 7987 } 7988 mInitialHitTestResult = null; 7989 mLastCursorTime = time; 7990 mLastCursorBounds = nativeGetCursorRingBounds(); 7991 boolean keyHandled 7992 = nativeMoveCursor(keyCode, count, noScroll) == false; 7993 if (DebugFlags.WEB_VIEW) { 7994 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7995 + " mLastCursorTime=" + mLastCursorTime 7996 + " handled=" + keyHandled); 7997 } 7998 if (keyHandled == false || mHeightCanMeasure == false) { 7999 return keyHandled; 8000 } 8001 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8002 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8003 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8004 // set last touch so that context menu related functions will work 8005 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8006 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8007 Rect visRect = new Rect(); 8008 calcOurVisibleRect(visRect); 8009 Rect outset = new Rect(visRect); 8010 int maxXScroll = visRect.width() / 2; 8011 int maxYScroll = visRect.height() / 2; 8012 outset.inset(-maxXScroll, -maxYScroll); 8013 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8014 return keyHandled; 8015 } 8016 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8017 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8018 maxXScroll); 8019 if (maxH > 0) { 8020 pinScrollBy(maxH, 0, true, 0); 8021 } else { 8022 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8023 -maxXScroll); 8024 if (maxH < 0) { 8025 pinScrollBy(maxH, 0, true, 0); 8026 } 8027 } 8028 if (mLastCursorBounds.isEmpty()) return keyHandled; 8029 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8030 return keyHandled; 8031 } 8032 if (DebugFlags.WEB_VIEW) { 8033 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8034 + contentCursorRingBounds); 8035 } 8036 requestRectangleOnScreen(viewCursorRingBounds); 8037 mUserScroll = true; 8038 return keyHandled; 8039 } 8040 8041 /** 8042 * @return Whether accessibility script has been injected. 8043 */ 8044 private boolean accessibilityScriptInjected() { 8045 // TODO: Maybe the injected script should announce its presence in 8046 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8047 // will check that as one of the conditions it looks for 8048 return mAccessibilityScriptInjected; 8049 } 8050 8051 /** 8052 * Set the background color. It's white by default. Pass 8053 * zero to make the view transparent. 8054 * @param color the ARGB color described by Color.java 8055 */ 8056 public void setBackgroundColor(int color) { 8057 mBackgroundColor = color; 8058 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8059 } 8060 8061 public void debugDump() { 8062 nativeDebugDump(); 8063 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 8064 } 8065 8066 /** 8067 * Draw the HTML page into the specified canvas. This call ignores any 8068 * view-specific zoom, scroll offset, or other changes. It does not draw 8069 * any view-specific chrome, such as progress or URL bars. 8070 * 8071 * @hide only needs to be accessible to Browser and testing 8072 */ 8073 public void drawPage(Canvas canvas) { 8074 nativeDraw(canvas, 0, 0, false); 8075 } 8076 8077 /** 8078 * Set the time to wait between passing touches to WebCore. See also the 8079 * TOUCH_SENT_INTERVAL member for further discussion. 8080 * 8081 * @hide This is only used by the DRT test application. 8082 */ 8083 public void setTouchInterval(int interval) { 8084 mCurrentTouchInterval = interval; 8085 } 8086 8087 /** 8088 * Toggle whether multi touch events should be sent to webkit 8089 * no matter if UI wants to handle it first. 8090 * 8091 * @hide This is only used by the webkit layout test. 8092 */ 8093 public void setDeferMultiTouch(boolean value) { 8094 mDeferMultitouch = value; 8095 Log.v(LOGTAG, "set mDeferMultitouch to " + value); 8096 } 8097 8098 /** 8099 * Update our cache with updatedText. 8100 * @param updatedText The new text to put in our cache. 8101 */ 8102 /* package */ void updateCachedTextfield(String updatedText) { 8103 // Also place our generation number so that when we look at the cache 8104 // we recognize that it is up to date. 8105 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 8106 } 8107 8108 /*package*/ void autoFillForm(int autoFillQueryId) { 8109 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 8110 } 8111 8112 /* package */ ViewManager getViewManager() { 8113 return mViewManager; 8114 } 8115 8116 private native int nativeCacheHitFramePointer(); 8117 private native Rect nativeCacheHitNodeBounds(); 8118 private native int nativeCacheHitNodePointer(); 8119 /* package */ native void nativeClearCursor(); 8120 private native void nativeCreate(int ptr); 8121 private native int nativeCursorFramePointer(); 8122 private native Rect nativeCursorNodeBounds(); 8123 private native int nativeCursorNodePointer(); 8124 private native boolean nativeCursorIntersects(Rect visibleRect); 8125 private native boolean nativeCursorIsAnchor(); 8126 private native boolean nativeCursorIsTextInput(); 8127 private native Point nativeCursorPosition(); 8128 private native String nativeCursorText(); 8129 /** 8130 * Returns true if the native cursor node says it wants to handle key events 8131 * (ala plugins). This can only be called if mNativeClass is non-zero! 8132 */ 8133 private native boolean nativeCursorWantsKeyEvents(); 8134 private native void nativeDebugDump(); 8135 private native void nativeDestroy(); 8136 8137 /** 8138 * Draw the picture set with a background color and extra. If 8139 * "splitIfNeeded" is true and the return value is not 0, the return value 8140 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 8141 * native allocation can be freed. 8142 */ 8143 private native int nativeDraw(Canvas canvas, int color, int extra, 8144 boolean splitIfNeeded); 8145 private native void nativeDumpDisplayTree(String urlOrNull); 8146 private native boolean nativeEvaluateLayersAnimations(); 8147 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 8148 private native void nativeExtendSelection(int x, int y); 8149 private native int nativeFindAll(String findLower, String findUpper, 8150 boolean sameAsLastSearch); 8151 private native void nativeFindNext(boolean forward); 8152 /* package */ native int nativeFocusCandidateFramePointer(); 8153 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8154 /* package */ native boolean nativeFocusCandidateIsPassword(); 8155 private native boolean nativeFocusCandidateIsRtlText(); 8156 private native boolean nativeFocusCandidateIsTextInput(); 8157 /* package */ native int nativeFocusCandidateMaxLength(); 8158 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 8159 /* package */ native String nativeFocusCandidateName(); 8160 private native Rect nativeFocusCandidateNodeBounds(); 8161 /** 8162 * @return A Rect with left, top, right, bottom set to the corresponding 8163 * padding values in the focus candidate, if it is a textfield/textarea with 8164 * a style. Otherwise return null. This is not actually a rectangle; Rect 8165 * is being used to pass four integers. 8166 */ 8167 private native Rect nativeFocusCandidatePaddingRect(); 8168 /* package */ native int nativeFocusCandidatePointer(); 8169 private native String nativeFocusCandidateText(); 8170 /* package */ native float nativeFocusCandidateTextSize(); 8171 /* package */ native int nativeFocusCandidateLineHeight(); 8172 /** 8173 * Returns an integer corresponding to WebView.cpp::type. 8174 * See WebTextView.setType() 8175 */ 8176 private native int nativeFocusCandidateType(); 8177 private native boolean nativeFocusIsPlugin(); 8178 private native Rect nativeFocusNodeBounds(); 8179 /* package */ native int nativeFocusNodePointer(); 8180 private native Rect nativeGetCursorRingBounds(); 8181 private native String nativeGetSelection(); 8182 private native boolean nativeHasCursorNode(); 8183 private native boolean nativeHasFocusNode(); 8184 private native void nativeHideCursor(); 8185 private native boolean nativeHitSelection(int x, int y); 8186 private native String nativeImageURI(int x, int y); 8187 private native void nativeInstrumentReport(); 8188 private native Rect nativeLayerBounds(int layer); 8189 /* package */ native boolean nativeMoveCursorToNextTextInput(); 8190 // return true if the page has been scrolled 8191 private native boolean nativeMotionUp(int x, int y, int slop); 8192 // returns false if it handled the key 8193 private native boolean nativeMoveCursor(int keyCode, int count, 8194 boolean noScroll); 8195 private native int nativeMoveGeneration(); 8196 private native void nativeMoveSelection(int x, int y); 8197 /** 8198 * @return true if the page should get the shift and arrow keys, rather 8199 * than select text/navigation. 8200 * 8201 * If the focus is a plugin, or if the focus and cursor match and are 8202 * a contentEditable element, then the page should handle these keys. 8203 */ 8204 private native boolean nativePageShouldHandleShiftAndArrows(); 8205 private native boolean nativePointInNavCache(int x, int y, int slop); 8206 // Like many other of our native methods, you must make sure that 8207 // mNativeClass is not null before calling this method. 8208 private native void nativeRecordButtons(boolean focused, 8209 boolean pressed, boolean invalidate); 8210 private native void nativeResetSelection(); 8211 private native Point nativeSelectableText(); 8212 private native void nativeSelectAll(); 8213 private native void nativeSelectBestAt(Rect rect); 8214 private native int nativeSelectionX(); 8215 private native int nativeSelectionY(); 8216 private native int nativeFindIndex(); 8217 private native void nativeSetExtendSelection(); 8218 private native void nativeSetFindIsEmpty(); 8219 private native void nativeSetFindIsUp(boolean isUp); 8220 private native void nativeSetHeightCanMeasure(boolean measure); 8221 private native void nativeSetBaseLayer(int layer, Rect invalRect); 8222 private native void nativeShowCursorTimed(); 8223 private native void nativeReplaceBaseContent(int content); 8224 private native void nativeCopyBaseContentToPicture(Picture pict); 8225 private native boolean nativeHasContent(); 8226 private native void nativeSetSelectionPointer(boolean set, 8227 float scale, int x, int y); 8228 private native boolean nativeStartSelection(int x, int y); 8229 private native Rect nativeSubtractLayers(Rect content); 8230 private native int nativeTextGeneration(); 8231 // Never call this version except by updateCachedTextfield(String) - 8232 // we always want to pass in our generation number. 8233 private native void nativeUpdateCachedTextfield(String updatedText, 8234 int generation); 8235 private native boolean nativeWordSelection(int x, int y); 8236 // return NO_LEFTEDGE means failure. 8237 static final int NO_LEFTEDGE = -1; 8238 native int nativeGetBlockLeftEdge(int x, int y, float scale); 8239 8240 // Returns a pointer to the scrollable LayerAndroid at the given point. 8241 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 8242 Rect scrollBounds); 8243 private native boolean nativeScrollLayer(int layer, int dx, int dy); 8244} 8245