WebView.java revision 2fddc21a466dfa97a86c4fae5c40662d75547ea5
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.Context; 24import android.content.DialogInterface; 25import android.content.DialogInterface.OnCancelListener; 26import android.content.Intent; 27import android.content.pm.PackageManager; 28import android.content.res.Resources; 29import android.database.DataSetObserver; 30import android.graphics.Bitmap; 31import android.graphics.BitmapFactory; 32import android.graphics.BitmapShader; 33import android.graphics.Canvas; 34import android.graphics.Color; 35import android.graphics.Interpolator; 36import android.graphics.Paint; 37import android.graphics.Picture; 38import android.graphics.Point; 39import android.graphics.Rect; 40import android.graphics.RectF; 41import android.graphics.Region; 42import android.graphics.Shader; 43import android.graphics.drawable.Drawable; 44import android.net.Uri; 45import android.net.http.SslCertificate; 46import android.os.Bundle; 47import android.os.Handler; 48import android.os.Message; 49import android.os.ServiceManager; 50import android.os.SystemClock; 51import android.text.IClipboard; 52import android.text.Selection; 53import android.text.Spannable; 54import android.util.AttributeSet; 55import android.util.EventLog; 56import android.util.Log; 57import android.util.TypedValue; 58import android.view.Gravity; 59import android.view.KeyEvent; 60import android.view.LayoutInflater; 61import android.view.MotionEvent; 62import android.view.ScaleGestureDetector; 63import android.view.SoundEffectConstants; 64import android.view.VelocityTracker; 65import android.view.View; 66import android.view.ViewConfiguration; 67import android.view.ViewGroup; 68import android.view.ViewTreeObserver; 69import android.view.animation.AlphaAnimation; 70import android.view.inputmethod.EditorInfo; 71import android.view.inputmethod.InputConnection; 72import android.view.inputmethod.InputMethodManager; 73import android.webkit.WebTextView.AutoCompleteAdapter; 74import android.webkit.WebViewCore.EventHub; 75import android.webkit.WebViewCore.TouchEventData; 76import android.widget.AbsoluteLayout; 77import android.widget.Adapter; 78import android.widget.AdapterView; 79import android.widget.AdapterView.OnItemClickListener; 80import android.widget.ArrayAdapter; 81import android.widget.CheckedTextView; 82import android.widget.EdgeGlow; 83import android.widget.FrameLayout; 84import android.widget.LinearLayout; 85import android.widget.ListView; 86import android.widget.OverScroller; 87import android.widget.Toast; 88import android.widget.ZoomButtonsController; 89import android.widget.ZoomControls; 90 91import java.io.File; 92import java.io.FileInputStream; 93import java.io.FileNotFoundException; 94import java.io.FileOutputStream; 95import java.net.URLDecoder; 96import java.util.ArrayList; 97import java.util.HashMap; 98import java.util.List; 99import java.util.Map; 100import java.util.Set; 101 102import junit.framework.Assert; 103 104/** 105 * <p>A View that displays web pages. This class is the basis upon which you 106 * can roll your own web browser or simply display some online content within your Activity. 107 * It uses the WebKit rendering engine to display 108 * web pages and includes methods to navigate forward and backward 109 * through a history, zoom in and out, perform text searches and more.</p> 110 * <p>To enable the built-in zoom, set 111 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 112 * (introduced in API version 3). 113 * <p>Note that, in order for your Activity to access the Internet and load web pages 114 * in a WebView, you must add the {@code INTERNET} permissions to your 115 * Android Manifest file:</p> 116 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 117 * 118 * <p>This must be a child of the <a 119 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 120 * element.</p> 121 * 122 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 123 * tutorial</a>.</p> 124 * 125 * <h3>Basic usage</h3> 126 * 127 * <p>By default, a WebView provides no browser-like widgets, does not 128 * enable JavaScript and web page errors are ignored. If your goal is only 129 * to display some HTML as a part of your UI, this is probably fine; 130 * the user won't need to interact with the web page beyond reading 131 * it, and the web page won't need to interact with the user. If you 132 * actually want a full-blown web browser, then you probably want to 133 * invoke the Browser application with a URL Intent rather than show it 134 * with a WebView. For example: 135 * <pre> 136 * Uri uri = Uri.parse("http://www.example.com"); 137 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 138 * startActivity(intent); 139 * </pre> 140 * <p>See {@link android.content.Intent} for more information.</p> 141 * 142 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 143 * or set the entire Activity window as a WebView during {@link 144 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 145 * <pre class="prettyprint"> 146 * WebView webview = new WebView(this); 147 * setContentView(webview); 148 * </pre> 149 * 150 * <p>Then load the desired web page:</p> 151 * <pre> 152 * // Simplest usage: note that an exception will NOT be thrown 153 * // if there is an error loading this page (see below). 154 * webview.loadUrl("http://slashdot.org/"); 155 * 156 * // OR, you can also load from an HTML string: 157 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 158 * webview.loadData(summary, "text/html", "utf-8"); 159 * // ... although note that there are restrictions on what this HTML can do. 160 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 161 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 162 * </pre> 163 * 164 * <p>A WebView has several customization points where you can add your 165 * own behavior. These are:</p> 166 * 167 * <ul> 168 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 169 * This class is called when something that might impact a 170 * browser UI happens, for instance, progress updates and 171 * JavaScript alerts are sent here (see <a 172 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 173 * </li> 174 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 175 * It will be called when things happen that impact the 176 * rendering of the content, eg, errors or form submissions. You 177 * can also intercept URL loading here (via {@link 178 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 179 * shouldOverrideUrlLoading()}).</li> 180 * <li>Modifying the {@link android.webkit.WebSettings}, such as 181 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 182 * setJavaScriptEnabled()}. </li> 183 * <li>Adding JavaScript-to-Java interfaces with the {@link 184 * android.webkit.WebView#addJavascriptInterface} method. 185 * This lets you bind Java objects into the WebView so they can be 186 * controlled from the web pages JavaScript.</li> 187 * </ul> 188 * 189 * <p>Here's a more complicated example, showing error handling, 190 * settings, and progress notification:</p> 191 * 192 * <pre class="prettyprint"> 193 * // Let's display the progress in the activity title bar, like the 194 * // browser app does. 195 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 196 * 197 * webview.getSettings().setJavaScriptEnabled(true); 198 * 199 * final Activity activity = this; 200 * webview.setWebChromeClient(new WebChromeClient() { 201 * public void onProgressChanged(WebView view, int progress) { 202 * // Activities and WebViews measure progress with different scales. 203 * // The progress meter will automatically disappear when we reach 100% 204 * activity.setProgress(progress * 1000); 205 * } 206 * }); 207 * webview.setWebViewClient(new WebViewClient() { 208 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 209 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 210 * } 211 * }); 212 * 213 * webview.loadUrl("http://slashdot.org/"); 214 * </pre> 215 * 216 * <h3>Cookie and window management</h3> 217 * 218 * <p>For obvious security reasons, your application has its own 219 * cache, cookie store etc.—it does not share the Browser 220 * application's data. Cookies are managed on a separate thread, so 221 * operations like index building don't block the UI 222 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 223 * if you want to use cookies in your application. 224 * </p> 225 * 226 * <p>By default, requests by the HTML to open new windows are 227 * ignored. This is true whether they be opened by JavaScript or by 228 * the target attribute on a link. You can customize your 229 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 230 * and render them in whatever manner you want.</p> 231 * 232 * <p>The standard behavior for an Activity is to be destroyed and 233 * recreated when the device orientation or any other configuration changes. This will cause 234 * the WebView to reload the current page. If you don't want that, you 235 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 236 * changes, and then just leave the WebView alone. It'll automatically 237 * re-orient itself as appropriate. Read <a 238 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 239 * more information about how to handle configuration changes during runtime.</p> 240 * 241 * 242 * <h3>Building web pages to support different screen densities</h3> 243 * 244 * <p>The screen density of a device is based on the screen resolution. A screen with low density 245 * has fewer available pixels per inch, where a screen with high density 246 * has more — sometimes significantly more — pixels per inch. The density of a 247 * screen is important because, other things being equal, a UI element (such as a button) whose 248 * height and width are defined in terms of screen pixels will appear larger on the lower density 249 * screen and smaller on the higher density screen. 250 * For simplicity, Android collapses all actual screen densities into three generalized densities: 251 * high, medium, and low.</p> 252 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 253 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 254 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 255 * are bigger). 256 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 257 * you (as a web developer) target screens with different screen densities.</p> 258 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 259 * <ul> 260 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 261 * default scaling factor used for the current device. For example, if the value of {@code 262 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 263 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 264 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 265 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 266 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 267 * (discussed below), then you can stop this default scaling behavior.</li> 268 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 269 * densities for which this style sheet is to be used. The corresponding value should be either 270 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 271 * density, or high density screens, respectively. For example: 272 * <pre> 273 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 274 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 275 * which is the high density pixel ratio.</p> 276 * </li> 277 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 278 * this to specify the target density for which the web page is designed, using the following 279 * values: 280 * <ul> 281 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 282 * occurs.</li> 283 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 284 * as appropriate.</li> 285 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 286 * low density screens scale down. This is also the default behavior.</li> 287 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 288 * as appropriate.</li> 289 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 290 * values are 70-400).</li> 291 * </ul> 292 * <p>Here's an example meta tag to specify the target density:</p> 293 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 294 * </ul> 295 * <p>If you want to modify your web page for different densities, by using the {@code 296 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 297 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 298 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 299 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 300 * 301 * 302 */ 303@Widget 304public class WebView extends AbsoluteLayout 305 implements ViewTreeObserver.OnGlobalFocusChangeListener, 306 ViewGroup.OnHierarchyChangeListener { 307 308 // enable debug output for drag trackers 309 private static final boolean DEBUG_DRAG_TRACKER = false; 310 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 311 // the screen all-the-time. Good for profiling our drawing code 312 static private final boolean AUTO_REDRAW_HACK = false; 313 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 314 private boolean mAutoRedraw; 315 316 static final String LOGTAG = "webview"; 317 318 private static class ExtendedZoomControls extends FrameLayout { 319 public ExtendedZoomControls(Context context, AttributeSet attrs) { 320 super(context, attrs); 321 LayoutInflater inflater = (LayoutInflater) 322 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 323 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 324 mPlusMinusZoomControls = (ZoomControls) findViewById( 325 com.android.internal.R.id.zoomControls); 326 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 327 View.GONE); 328 } 329 330 public void show(boolean showZoom, boolean canZoomOut) { 331 mPlusMinusZoomControls.setVisibility( 332 showZoom ? View.VISIBLE : View.GONE); 333 fade(View.VISIBLE, 0.0f, 1.0f); 334 } 335 336 public void hide() { 337 fade(View.GONE, 1.0f, 0.0f); 338 } 339 340 private void fade(int visibility, float startAlpha, float endAlpha) { 341 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 342 anim.setDuration(500); 343 startAnimation(anim); 344 setVisibility(visibility); 345 } 346 347 public boolean hasFocus() { 348 return mPlusMinusZoomControls.hasFocus(); 349 } 350 351 public void setOnZoomInClickListener(OnClickListener listener) { 352 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 353 } 354 355 public void setOnZoomOutClickListener(OnClickListener listener) { 356 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 357 } 358 359 ZoomControls mPlusMinusZoomControls; 360 } 361 362 /** 363 * Transportation object for returning WebView across thread boundaries. 364 */ 365 public class WebViewTransport { 366 private WebView mWebview; 367 368 /** 369 * Set the WebView to the transportation object. 370 * @param webview The WebView to transport. 371 */ 372 public synchronized void setWebView(WebView webview) { 373 mWebview = webview; 374 } 375 376 /** 377 * Return the WebView object. 378 * @return WebView The transported WebView object. 379 */ 380 public synchronized WebView getWebView() { 381 return mWebview; 382 } 383 } 384 385 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 386 private final CallbackProxy mCallbackProxy; 387 388 private final WebViewDatabase mDatabase; 389 390 // SSL certificate for the main top-level page (if secure) 391 private SslCertificate mCertificate; 392 393 // Native WebView pointer that is 0 until the native object has been 394 // created. 395 private int mNativeClass; 396 // This would be final but it needs to be set to null when the WebView is 397 // destroyed. 398 private WebViewCore mWebViewCore; 399 // Handler for dispatching UI messages. 400 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 401 private WebTextView mWebTextView; 402 // Used to ignore changes to webkit text that arrives to the UI side after 403 // more key events. 404 private int mTextGeneration; 405 406 // Used by WebViewCore to create child views. 407 /* package */ final ViewManager mViewManager; 408 409 // Used to display in full screen mode 410 PluginFullScreenHolder mFullScreenHolder; 411 412 /** 413 * Position of the last touch event. 414 */ 415 private float mLastTouchX; 416 private float mLastTouchY; 417 418 /** 419 * Time of the last touch event. 420 */ 421 private long mLastTouchTime; 422 423 /** 424 * Time of the last time sending touch event to WebViewCore 425 */ 426 private long mLastSentTouchTime; 427 428 /** 429 * The minimum elapsed time before sending another ACTION_MOVE event to 430 * WebViewCore. This really should be tuned for each type of the devices. 431 * For example in Google Map api test case, it takes Dream device at least 432 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 433 * triggering the layout and drawing the picture. While the same process 434 * takes 60+ms on the current high speed device. If we make 435 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 436 * to WebViewCore queue and the real layout and draw events will be pushed 437 * to further, which slows down the refresh rate. Choose 50 to favor the 438 * current high speed devices. For Dream like devices, 100 is a better 439 * choice. Maybe make this in the buildspec later. 440 */ 441 private static final int TOUCH_SENT_INTERVAL = 50; 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 /** 454 * Touch mode 455 */ 456 private int mTouchMode = TOUCH_DONE_MODE; 457 private static final int TOUCH_INIT_MODE = 1; 458 private static final int TOUCH_DRAG_START_MODE = 2; 459 private static final int TOUCH_DRAG_MODE = 3; 460 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 461 private static final int TOUCH_SHORTPRESS_MODE = 5; 462 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 463 private static final int TOUCH_DONE_MODE = 7; 464 private static final int TOUCH_PINCH_DRAG = 8; 465 466 /** 467 * True if we have a touch panel capable of detecting smooth pan/scale at the same time 468 */ 469 private boolean mAllowPanAndScale; 470 471 // Whether to forward the touch events to WebCore 472 private boolean mForwardTouchEvents = false; 473 474 // Whether to prevent default during touch. The initial value depends on 475 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 476 // for touch down. Otherwise UI will wait for the answer of the first 477 // confirmed move before taking over the control. 478 private static final int PREVENT_DEFAULT_NO = 0; 479 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 480 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 481 private static final int PREVENT_DEFAULT_YES = 3; 482 private static final int PREVENT_DEFAULT_IGNORE = 4; 483 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 484 485 // true when the touch movement exceeds the slop 486 private boolean mConfirmMove; 487 488 // if true, touch events will be first processed by WebCore, if prevent 489 // default is not set, the UI will continue handle them. 490 private boolean mDeferTouchProcess; 491 492 // to avoid interfering with the current touch events, track them 493 // separately. Currently no snapping or fling in the deferred process mode 494 private int mDeferTouchMode = TOUCH_DONE_MODE; 495 private float mLastDeferTouchX; 496 private float mLastDeferTouchY; 497 498 // To keep track of whether the current drag was initiated by a WebTextView, 499 // so that we know not to hide the cursor 500 boolean mDragFromTextInput; 501 502 // Whether or not to draw the cursor ring. 503 private boolean mDrawCursorRing = true; 504 505 // true if onPause has been called (and not onResume) 506 private boolean mIsPaused; 507 508 // true if, during a transition to a new page, we're delaying 509 // deleting a root layer until there's something to draw of the new page. 510 private boolean mDelayedDeleteRootLayer; 511 512 /** 513 * Customizable constant 514 */ 515 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 516 private int mTouchSlopSquare; 517 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 518 private int mDoubleTapSlopSquare; 519 // pre-computed density adjusted navigation slop 520 private int mNavSlop; 521 // This should be ViewConfiguration.getTapTimeout() 522 // But system time out is 100ms, which is too short for the browser. 523 // In the browser, if it switches out of tap too soon, jump tap won't work. 524 private static final int TAP_TIMEOUT = 200; 525 // This should be ViewConfiguration.getLongPressTimeout() 526 // But system time out is 500ms, which is too short for the browser. 527 // With a short timeout, it's difficult to treat trigger a short press. 528 private static final int LONG_PRESS_TIMEOUT = 1000; 529 // needed to avoid flinging after a pause of no movement 530 private static final int MIN_FLING_TIME = 250; 531 // draw unfiltered after drag is held without movement 532 private static final int MOTIONLESS_TIME = 100; 533 // The time that the Zoom Controls are visible before fading away 534 private static final long ZOOM_CONTROLS_TIMEOUT = 535 ViewConfiguration.getZoomControlsTimeout(); 536 // The amount of content to overlap between two screens when going through 537 // pages with the space bar, in pixels. 538 private static final int PAGE_SCROLL_OVERLAP = 24; 539 540 /** 541 * These prevent calling requestLayout if either dimension is fixed. This 542 * depends on the layout parameters and the measure specs. 543 */ 544 boolean mWidthCanMeasure; 545 boolean mHeightCanMeasure; 546 547 // Remember the last dimensions we sent to the native side so we can avoid 548 // sending the same dimensions more than once. 549 int mLastWidthSent; 550 int mLastHeightSent; 551 552 private int mContentWidth; // cache of value from WebViewCore 553 private int mContentHeight; // cache of value from WebViewCore 554 555 // Need to have the separate control for horizontal and vertical scrollbar 556 // style than the View's single scrollbar style 557 private boolean mOverlayHorizontalScrollbar = true; 558 private boolean mOverlayVerticalScrollbar = false; 559 560 // our standard speed. this way small distances will be traversed in less 561 // time than large distances, but we cap the duration, so that very large 562 // distances won't take too long to get there. 563 private static final int STD_SPEED = 480; // pixels per second 564 // time for the longest scroll animation 565 private static final int MAX_DURATION = 750; // milliseconds 566 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 567 private OverScroller mScroller; 568 private boolean mInOverScrollMode = false; 569 private static Paint mOverScrollBackground; 570 private static Paint mOverScrollBorder; 571 572 private boolean mWrapContent; 573 private static final int MOTIONLESS_FALSE = 0; 574 private static final int MOTIONLESS_PENDING = 1; 575 private static final int MOTIONLESS_TRUE = 2; 576 private static final int MOTIONLESS_IGNORE = 3; 577 private int mHeldMotionless; 578 579 // whether support multi-touch 580 private boolean mSupportMultiTouch; 581 // use the framework's ScaleGestureDetector to handle multi-touch 582 private ScaleGestureDetector mScaleDetector; 583 584 // the anchor point in the document space where VIEW_SIZE_CHANGED should 585 // apply to 586 private int mAnchorX; 587 private int mAnchorY; 588 589 /* 590 * Private message ids 591 */ 592 private static final int REMEMBER_PASSWORD = 1; 593 private static final int NEVER_REMEMBER_PASSWORD = 2; 594 private static final int SWITCH_TO_SHORTPRESS = 3; 595 private static final int SWITCH_TO_LONGPRESS = 4; 596 private static final int RELEASE_SINGLE_TAP = 5; 597 private static final int REQUEST_FORM_DATA = 6; 598 private static final int RESUME_WEBCORE_PRIORITY = 7; 599 private static final int DRAG_HELD_MOTIONLESS = 8; 600 private static final int AWAKEN_SCROLL_BARS = 9; 601 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 602 603 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 604 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 605 606 /* 607 * Package message ids 608 */ 609 //! arg1=x, arg2=y 610 static final int SCROLL_TO_MSG_ID = 101; 611 static final int SCROLL_BY_MSG_ID = 102; 612 //! arg1=x, arg2=y 613 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 614 //! arg1=x, arg2=y 615 static final int SYNC_SCROLL_TO_MSG_ID = 104; 616 static final int NEW_PICTURE_MSG_ID = 105; 617 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 618 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 619 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 620 static final int UPDATE_ZOOM_RANGE = 109; 621 static final int MOVE_OUT_OF_PLUGIN = 110; 622 static final int CLEAR_TEXT_ENTRY = 111; 623 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 624 static final int SHOW_RECT_MSG_ID = 113; 625 static final int LONG_PRESS_CENTER = 114; 626 static final int PREVENT_TOUCH_ID = 115; 627 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 628 // obj=Rect in doc coordinates 629 static final int INVAL_RECT_MSG_ID = 117; 630 static final int REQUEST_KEYBOARD = 118; 631 static final int DO_MOTION_UP = 119; 632 static final int SHOW_FULLSCREEN = 120; 633 static final int HIDE_FULLSCREEN = 121; 634 static final int DOM_FOCUS_CHANGED = 122; 635 static final int IMMEDIATE_REPAINT_MSG_ID = 123; 636 static final int SET_ROOT_LAYER_MSG_ID = 124; 637 static final int RETURN_LABEL = 125; 638 static final int FIND_AGAIN = 126; 639 static final int CENTER_FIT_RECT = 127; 640 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 641 static final int SET_SCROLLBAR_MODES = 129; 642 643 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 644 private static final int LAST_PACKAGE_MSG_ID = SET_SCROLLBAR_MODES; 645 646 static final String[] HandlerPrivateDebugString = { 647 "REMEMBER_PASSWORD", // = 1; 648 "NEVER_REMEMBER_PASSWORD", // = 2; 649 "SWITCH_TO_SHORTPRESS", // = 3; 650 "SWITCH_TO_LONGPRESS", // = 4; 651 "RELEASE_SINGLE_TAP", // = 5; 652 "REQUEST_FORM_DATA", // = 6; 653 "RESUME_WEBCORE_PRIORITY", // = 7; 654 "DRAG_HELD_MOTIONLESS", // = 8; 655 "AWAKEN_SCROLL_BARS", // = 9; 656 "PREVENT_DEFAULT_TIMEOUT" // = 10; 657 }; 658 659 static final String[] HandlerPackageDebugString = { 660 "SCROLL_TO_MSG_ID", // = 101; 661 "SCROLL_BY_MSG_ID", // = 102; 662 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 663 "SYNC_SCROLL_TO_MSG_ID", // = 104; 664 "NEW_PICTURE_MSG_ID", // = 105; 665 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 666 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 667 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 668 "UPDATE_ZOOM_RANGE", // = 109; 669 "MOVE_OUT_OF_PLUGIN", // = 110; 670 "CLEAR_TEXT_ENTRY", // = 111; 671 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 672 "SHOW_RECT_MSG_ID", // = 113; 673 "LONG_PRESS_CENTER", // = 114; 674 "PREVENT_TOUCH_ID", // = 115; 675 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 676 "INVAL_RECT_MSG_ID", // = 117; 677 "REQUEST_KEYBOARD", // = 118; 678 "DO_MOTION_UP", // = 119; 679 "SHOW_FULLSCREEN", // = 120; 680 "HIDE_FULLSCREEN", // = 121; 681 "DOM_FOCUS_CHANGED", // = 122; 682 "IMMEDIATE_REPAINT_MSG_ID", // = 123; 683 "SET_ROOT_LAYER_MSG_ID", // = 124; 684 "RETURN_LABEL", // = 125; 685 "FIND_AGAIN", // = 126; 686 "CENTER_FIT_RECT", // = 127; 687 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 688 "SET_SCROLLBAR_MODES" // = 129; 689 }; 690 691 // If the site doesn't use the viewport meta tag to specify the viewport, 692 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 693 static final int DEFAULT_VIEWPORT_WIDTH = 800; 694 695 // normally we try to fit the content to the minimum preferred width 696 // calculated by the Webkit. To avoid the bad behavior when some site's 697 // minimum preferred width keeps growing when changing the viewport width or 698 // the minimum preferred width is huge, an upper limit is needed. 699 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 700 701 // default scale limit. Depending on the display density 702 private static float DEFAULT_MAX_ZOOM_SCALE; 703 private static float DEFAULT_MIN_ZOOM_SCALE; 704 // scale limit, which can be set through viewport meta tag in the web page 705 private float mMaxZoomScale; 706 private float mMinZoomScale; 707 private boolean mMinZoomScaleFixed = true; 708 709 // initial scale in percent. 0 means using default. 710 private int mInitialScaleInPercent = 0; 711 712 // while in the zoom overview mode, the page's width is fully fit to the 713 // current window. The page is alive, in another words, you can click to 714 // follow the links. Double tap will toggle between zoom overview mode and 715 // the last zoom scale. 716 boolean mInZoomOverview = false; 717 718 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 719 // engadget always have wider mContentWidth no matter what viewport size is. 720 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 721 float mTextWrapScale; 722 723 // default scale. Depending on the display density. 724 static int DEFAULT_SCALE_PERCENT; 725 private float mDefaultScale; 726 727 private static float MINIMUM_SCALE_INCREMENT = 0.01f; 728 729 // set to true temporarily during ScaleGesture triggered zoom 730 private boolean mPreviewZoomOnly = false; 731 732 // computed scale and inverse, from mZoomWidth. 733 private float mActualScale; 734 private float mInvActualScale; 735 // if this is non-zero, it is used on drawing rather than mActualScale 736 private float mZoomScale; 737 private float mInvInitialZoomScale; 738 private float mInvFinalZoomScale; 739 private int mInitialScrollX; 740 private int mInitialScrollY; 741 private long mZoomStart; 742 private static final int ZOOM_ANIMATION_LENGTH = 500; 743 744 private boolean mUserScroll = false; 745 746 private int mSnapScrollMode = SNAP_NONE; 747 private static final int SNAP_NONE = 0; 748 private static final int SNAP_LOCK = 1; // not a separate state 749 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 750 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 751 private boolean mSnapPositive; 752 753 // keep these in sync with their counterparts in WebView.cpp 754 private static final int DRAW_EXTRAS_NONE = 0; 755 private static final int DRAW_EXTRAS_FIND = 1; 756 private static final int DRAW_EXTRAS_SELECTION = 2; 757 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 758 759 // keep this in sync with WebCore:ScrollbarMode in WebKit 760 private static final int SCROLLBAR_AUTO = 0; 761 private static final int SCROLLBAR_ALWAYSOFF = 1; 762 // as we auto fade scrollbar, this is ignored. 763 private static final int SCROLLBAR_ALWAYSON = 2; 764 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 765 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 766 767 /** 768 * Max distance to overscroll by in pixels. 769 * This how far content can be pulled beyond its normal bounds by the user. 770 */ 771 private int mOverscrollDistance; 772 773 /** 774 * Max distance to overfling by in pixels. 775 * This is how far flinged content can move beyond the end of its normal bounds. 776 */ 777 private int mOverflingDistance; 778 779 /* 780 * These manage the edge glow effect when flung or pulled beyond the edges. 781 * If one is not null, all are not null. Checking one for null is as good as checking each. 782 */ 783 private EdgeGlow mEdgeGlowTop; 784 private EdgeGlow mEdgeGlowBottom; 785 private EdgeGlow mEdgeGlowLeft; 786 private EdgeGlow mEdgeGlowRight; 787 788 // Used to match key downs and key ups 789 private boolean mGotKeyDown; 790 791 /* package */ static boolean mLogEvent = true; 792 793 // for event log 794 private long mLastTouchUpTime = 0; 795 796 /** 797 * URI scheme for telephone number 798 */ 799 public static final String SCHEME_TEL = "tel:"; 800 /** 801 * URI scheme for email address 802 */ 803 public static final String SCHEME_MAILTO = "mailto:"; 804 /** 805 * URI scheme for map address 806 */ 807 public static final String SCHEME_GEO = "geo:0,0?q="; 808 809 private int mBackgroundColor = Color.WHITE; 810 811 // Used to notify listeners of a new picture. 812 private PictureListener mPictureListener; 813 /** 814 * Interface to listen for new pictures as they change. 815 */ 816 public interface PictureListener { 817 /** 818 * Notify the listener that the picture has changed. 819 * @param view The WebView that owns the picture. 820 * @param picture The new picture. 821 */ 822 public void onNewPicture(WebView view, Picture picture); 823 } 824 825 // FIXME: Want to make this public, but need to change the API file. 826 public /*static*/ class HitTestResult { 827 /** 828 * Default HitTestResult, where the target is unknown 829 */ 830 public static final int UNKNOWN_TYPE = 0; 831 /** 832 * HitTestResult for hitting a HTML::a tag 833 */ 834 public static final int ANCHOR_TYPE = 1; 835 /** 836 * HitTestResult for hitting a phone number 837 */ 838 public static final int PHONE_TYPE = 2; 839 /** 840 * HitTestResult for hitting a map address 841 */ 842 public static final int GEO_TYPE = 3; 843 /** 844 * HitTestResult for hitting an email address 845 */ 846 public static final int EMAIL_TYPE = 4; 847 /** 848 * HitTestResult for hitting an HTML::img tag 849 */ 850 public static final int IMAGE_TYPE = 5; 851 /** 852 * HitTestResult for hitting a HTML::a tag which contains HTML::img 853 */ 854 public static final int IMAGE_ANCHOR_TYPE = 6; 855 /** 856 * HitTestResult for hitting a HTML::a tag with src=http 857 */ 858 public static final int SRC_ANCHOR_TYPE = 7; 859 /** 860 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 861 */ 862 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 863 /** 864 * HitTestResult for hitting an edit text area 865 */ 866 public static final int EDIT_TEXT_TYPE = 9; 867 868 private int mType; 869 private String mExtra; 870 871 HitTestResult() { 872 mType = UNKNOWN_TYPE; 873 } 874 875 private void setType(int type) { 876 mType = type; 877 } 878 879 private void setExtra(String extra) { 880 mExtra = extra; 881 } 882 883 public int getType() { 884 return mType; 885 } 886 887 public String getExtra() { 888 return mExtra; 889 } 890 } 891 892 // The View containing the zoom controls 893 private ExtendedZoomControls mZoomControls; 894 private Runnable mZoomControlRunnable; 895 896 // mZoomButtonsController will be lazy initialized in 897 // getZoomButtonsController() to get better performance. 898 private ZoomButtonsController mZoomButtonsController; 899 900 // These keep track of the center point of the zoom. They are used to 901 // determine the point around which we should zoom. 902 private float mZoomCenterX; 903 private float mZoomCenterY; 904 905 private ZoomButtonsController.OnZoomListener mZoomListener = 906 new ZoomButtonsController.OnZoomListener() { 907 908 public void onVisibilityChanged(boolean visible) { 909 if (visible) { 910 switchOutDrawHistory(); 911 // Bring back the hidden zoom controls. 912 mZoomButtonsController.getZoomControls().setVisibility( 913 View.VISIBLE); 914 updateZoomButtonsEnabled(); 915 } 916 } 917 918 public void onZoom(boolean zoomIn) { 919 if (zoomIn) { 920 zoomIn(); 921 } else { 922 zoomOut(); 923 } 924 925 updateZoomButtonsEnabled(); 926 } 927 }; 928 929 /** 930 * Construct a new WebView with a Context object. 931 * @param context A Context object used to access application assets. 932 */ 933 public WebView(Context context) { 934 this(context, null); 935 } 936 937 /** 938 * Construct a new WebView with layout parameters. 939 * @param context A Context object used to access application assets. 940 * @param attrs An AttributeSet passed to our parent. 941 */ 942 public WebView(Context context, AttributeSet attrs) { 943 this(context, attrs, com.android.internal.R.attr.webViewStyle); 944 } 945 946 /** 947 * Construct a new WebView with layout parameters and a default style. 948 * @param context A Context object used to access application assets. 949 * @param attrs An AttributeSet passed to our parent. 950 * @param defStyle The default style resource ID. 951 */ 952 public WebView(Context context, AttributeSet attrs, int defStyle) { 953 this(context, attrs, defStyle, null); 954 } 955 956 /** 957 * Construct a new WebView with layout parameters, a default style and a set 958 * of custom Javscript interfaces to be added to the WebView at initialization 959 * time. This guarantees that these interfaces will be available when the JS 960 * context is initialized. 961 * @param context A Context object used to access application assets. 962 * @param attrs An AttributeSet passed to our parent. 963 * @param defStyle The default style resource ID. 964 * @param javascriptInterfaces is a Map of intareface names, as keys, and 965 * object implementing those interfaces, as values. 966 * @hide pending API council approval. 967 */ 968 protected WebView(Context context, AttributeSet attrs, int defStyle, 969 Map<String, Object> javascriptInterfaces) { 970 super(context, attrs, defStyle); 971 init(); 972 973 mCallbackProxy = new CallbackProxy(context, this); 974 mViewManager = new ViewManager(this); 975 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 976 mDatabase = WebViewDatabase.getInstance(context); 977 mScroller = new OverScroller(context); 978 979 updateMultiTouchSupport(context); 980 } 981 982 void updateMultiTouchSupport(Context context) { 983 WebSettings settings = getSettings(); 984 final PackageManager pm = context.getPackageManager(); 985 mSupportMultiTouch = pm.hasSystemFeature(PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 986 && settings.supportZoom() && settings.getBuiltInZoomControls(); 987 mAllowPanAndScale = pm.hasSystemFeature( 988 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT); 989 if (mSupportMultiTouch && (mScaleDetector == null)) { 990 mScaleDetector = new ScaleGestureDetector(context, 991 new ScaleDetectorListener()); 992 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 993 mScaleDetector = null; 994 } 995 } 996 997 private void updateZoomButtonsEnabled() { 998 if (mZoomButtonsController == null) return; 999 boolean canZoomIn = mActualScale < mMaxZoomScale; 1000 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 1001 if (!canZoomIn && !canZoomOut) { 1002 // Hide the zoom in and out buttons, as well as the fit to page 1003 // button, if the page cannot zoom 1004 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 1005 } else { 1006 // Set each one individually, as a page may be able to zoom in 1007 // or out. 1008 mZoomButtonsController.setZoomInEnabled(canZoomIn); 1009 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 1010 } 1011 } 1012 1013 private void init() { 1014 setWillNotDraw(false); 1015 setFocusable(true); 1016 setFocusableInTouchMode(true); 1017 setClickable(true); 1018 setLongClickable(true); 1019 1020 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1021 int slop = configuration.getScaledTouchSlop(); 1022 mTouchSlopSquare = slop * slop; 1023 mMinLockSnapReverseDistance = slop; 1024 slop = configuration.getScaledDoubleTapSlop(); 1025 mDoubleTapSlopSquare = slop * slop; 1026 final float density = getContext().getResources().getDisplayMetrics().density; 1027 // use one line height, 16 based on our current default font, for how 1028 // far we allow a touch be away from the edge of a link 1029 mNavSlop = (int) (16 * density); 1030 // density adjusted scale factors 1031 DEFAULT_SCALE_PERCENT = (int) (100 * density); 1032 mDefaultScale = density; 1033 mActualScale = density; 1034 mInvActualScale = 1 / density; 1035 mTextWrapScale = density; 1036 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 1037 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 1038 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 1039 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 1040 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1041 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1042 mOverflingDistance = configuration.getScaledOverflingDistance(); 1043 } 1044 1045 @Override 1046 public void setOverscrollMode(int mode) { 1047 super.setOverscrollMode(mode); 1048 if (mode != OVERSCROLL_NEVER) { 1049 if (mEdgeGlowTop == null) { 1050 final Resources res = getContext().getResources(); 1051 final Drawable edge = res.getDrawable(R.drawable.overscroll_edge); 1052 final Drawable glow = res.getDrawable(R.drawable.overscroll_glow); 1053 mEdgeGlowTop = new EdgeGlow(edge, glow); 1054 mEdgeGlowBottom = new EdgeGlow(edge, glow); 1055 mEdgeGlowLeft = new EdgeGlow(edge, glow); 1056 mEdgeGlowRight = new EdgeGlow(edge, glow); 1057 } 1058 } else { 1059 mEdgeGlowTop = null; 1060 mEdgeGlowBottom = null; 1061 mEdgeGlowLeft = null; 1062 mEdgeGlowRight = null; 1063 } 1064 } 1065 1066 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1067 final float density = getContext().getResources().getDisplayMetrics().density 1068 * 100 / zoomDensity; 1069 if (Math.abs(density - mDefaultScale) > 0.01) { 1070 float scaleFactor = density / mDefaultScale; 1071 // adjust the limits 1072 mNavSlop = (int) (16 * density); 1073 DEFAULT_SCALE_PERCENT = (int) (100 * density); 1074 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 1075 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 1076 mDefaultScale = density; 1077 mMaxZoomScale *= scaleFactor; 1078 mMinZoomScale *= scaleFactor; 1079 setNewZoomScale(mActualScale * scaleFactor, true, false); 1080 } 1081 } 1082 1083 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1084 String password, final Message resumeMsg) { 1085 boolean rVal = false; 1086 if (resumeMsg == null) { 1087 // null resumeMsg implies saving password silently 1088 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1089 } else { 1090 final Message remember = mPrivateHandler.obtainMessage( 1091 REMEMBER_PASSWORD); 1092 remember.getData().putString("host", schemePlusHost); 1093 remember.getData().putString("username", username); 1094 remember.getData().putString("password", password); 1095 remember.obj = resumeMsg; 1096 1097 final Message neverRemember = mPrivateHandler.obtainMessage( 1098 NEVER_REMEMBER_PASSWORD); 1099 neverRemember.getData().putString("host", schemePlusHost); 1100 neverRemember.getData().putString("username", username); 1101 neverRemember.getData().putString("password", password); 1102 neverRemember.obj = resumeMsg; 1103 1104 new AlertDialog.Builder(getContext()) 1105 .setTitle(com.android.internal.R.string.save_password_label) 1106 .setMessage(com.android.internal.R.string.save_password_message) 1107 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1108 new DialogInterface.OnClickListener() { 1109 public void onClick(DialogInterface dialog, int which) { 1110 resumeMsg.sendToTarget(); 1111 } 1112 }) 1113 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1114 new DialogInterface.OnClickListener() { 1115 public void onClick(DialogInterface dialog, int which) { 1116 remember.sendToTarget(); 1117 } 1118 }) 1119 .setNegativeButton(com.android.internal.R.string.save_password_never, 1120 new DialogInterface.OnClickListener() { 1121 public void onClick(DialogInterface dialog, int which) { 1122 neverRemember.sendToTarget(); 1123 } 1124 }) 1125 .setOnCancelListener(new OnCancelListener() { 1126 public void onCancel(DialogInterface dialog) { 1127 resumeMsg.sendToTarget(); 1128 } 1129 }).show(); 1130 // Return true so that WebViewCore will pause while the dialog is 1131 // up. 1132 rVal = true; 1133 } 1134 return rVal; 1135 } 1136 1137 @Override 1138 public void setScrollBarStyle(int style) { 1139 if (style == View.SCROLLBARS_INSIDE_INSET 1140 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1141 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1142 } else { 1143 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1144 } 1145 super.setScrollBarStyle(style); 1146 } 1147 1148 /** 1149 * Specify whether the horizontal scrollbar has overlay style. 1150 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1151 */ 1152 public void setHorizontalScrollbarOverlay(boolean overlay) { 1153 mOverlayHorizontalScrollbar = overlay; 1154 } 1155 1156 /** 1157 * Specify whether the vertical scrollbar has overlay style. 1158 * @param overlay TRUE if vertical scrollbar should have overlay style. 1159 */ 1160 public void setVerticalScrollbarOverlay(boolean overlay) { 1161 mOverlayVerticalScrollbar = overlay; 1162 } 1163 1164 /** 1165 * Return whether horizontal scrollbar has overlay style 1166 * @return TRUE if horizontal scrollbar has overlay style. 1167 */ 1168 public boolean overlayHorizontalScrollbar() { 1169 return mOverlayHorizontalScrollbar; 1170 } 1171 1172 /** 1173 * Return whether vertical scrollbar has overlay style 1174 * @return TRUE if vertical scrollbar has overlay style. 1175 */ 1176 public boolean overlayVerticalScrollbar() { 1177 return mOverlayVerticalScrollbar; 1178 } 1179 1180 /* 1181 * Return the width of the view where the content of WebView should render 1182 * to. 1183 * Note: this can be called from WebCoreThread. 1184 */ 1185 /* package */ int getViewWidth() { 1186 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1187 return getWidth(); 1188 } else { 1189 return getWidth() - getVerticalScrollbarWidth(); 1190 } 1191 } 1192 1193 /* 1194 * returns the height of the titlebarview (if any). Does not care about 1195 * scrolling 1196 */ 1197 private int getTitleHeight() { 1198 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1199 } 1200 1201 /* 1202 * Return the amount of the titlebarview (if any) that is visible 1203 */ 1204 private int getVisibleTitleHeight() { 1205 // need to restrict mScrollY due to over scroll 1206 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1207 } 1208 1209 /* 1210 * Return the height of the view where the content of WebView should render 1211 * to. Note that this excludes mTitleBar, if there is one. 1212 * Note: this can be called from WebCoreThread. 1213 */ 1214 /* package */ int getViewHeight() { 1215 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1216 } 1217 1218 private int getViewHeightWithTitle() { 1219 int height = getHeight(); 1220 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1221 height -= getHorizontalScrollbarHeight(); 1222 } 1223 return height; 1224 } 1225 1226 /** 1227 * @return The SSL certificate for the main top-level page or null if 1228 * there is no certificate (the site is not secure). 1229 */ 1230 public SslCertificate getCertificate() { 1231 return mCertificate; 1232 } 1233 1234 /** 1235 * Sets the SSL certificate for the main top-level page. 1236 */ 1237 public void setCertificate(SslCertificate certificate) { 1238 if (DebugFlags.WEB_VIEW) { 1239 Log.v(LOGTAG, "setCertificate=" + certificate); 1240 } 1241 // here, the certificate can be null (if the site is not secure) 1242 mCertificate = certificate; 1243 } 1244 1245 //------------------------------------------------------------------------- 1246 // Methods called by activity 1247 //------------------------------------------------------------------------- 1248 1249 /** 1250 * Save the username and password for a particular host in the WebView's 1251 * internal database. 1252 * @param host The host that required the credentials. 1253 * @param username The username for the given host. 1254 * @param password The password for the given host. 1255 */ 1256 public void savePassword(String host, String username, String password) { 1257 mDatabase.setUsernamePassword(host, username, password); 1258 } 1259 1260 /** 1261 * Set the HTTP authentication credentials for a given host and realm. 1262 * 1263 * @param host The host for the credentials. 1264 * @param realm The realm for the credentials. 1265 * @param username The username for the password. If it is null, it means 1266 * password can't be saved. 1267 * @param password The password 1268 */ 1269 public void setHttpAuthUsernamePassword(String host, String realm, 1270 String username, String password) { 1271 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1272 } 1273 1274 /** 1275 * Retrieve the HTTP authentication username and password for a given 1276 * host & realm pair 1277 * 1278 * @param host The host for which the credentials apply. 1279 * @param realm The realm for which the credentials apply. 1280 * @return String[] if found, String[0] is username, which can be null and 1281 * String[1] is password. Return null if it can't find anything. 1282 */ 1283 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1284 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1285 } 1286 1287 private void clearHelpers() { 1288 clearTextEntry(false); 1289 selectionDone(); 1290 } 1291 1292 /** 1293 * Destroy the internal state of the WebView. This method should be called 1294 * after the WebView has been removed from the view system. No other 1295 * methods may be called on a WebView after destroy. 1296 */ 1297 public void destroy() { 1298 clearHelpers(); 1299 if (mWebViewCore != null) { 1300 // Set the handlers to null before destroying WebViewCore so no 1301 // more messages will be posted. 1302 mCallbackProxy.setWebViewClient(null); 1303 mCallbackProxy.setWebChromeClient(null); 1304 // Tell WebViewCore to destroy itself 1305 synchronized (this) { 1306 WebViewCore webViewCore = mWebViewCore; 1307 mWebViewCore = null; // prevent using partial webViewCore 1308 webViewCore.destroy(); 1309 } 1310 // Remove any pending messages that might not be serviced yet. 1311 mPrivateHandler.removeCallbacksAndMessages(null); 1312 mCallbackProxy.removeCallbacksAndMessages(null); 1313 // Wake up the WebCore thread just in case it is waiting for a 1314 // javascript dialog. 1315 synchronized (mCallbackProxy) { 1316 mCallbackProxy.notify(); 1317 } 1318 } 1319 if (mNativeClass != 0) { 1320 nativeDestroy(); 1321 mNativeClass = 0; 1322 } 1323 } 1324 1325 /** 1326 * Enables platform notifications of data state and proxy changes. 1327 */ 1328 public static void enablePlatformNotifications() { 1329 Network.enablePlatformNotifications(); 1330 } 1331 1332 /** 1333 * If platform notifications are enabled, this should be called 1334 * from the Activity's onPause() or onStop(). 1335 */ 1336 public static void disablePlatformNotifications() { 1337 Network.disablePlatformNotifications(); 1338 } 1339 1340 /** 1341 * Sets JavaScript engine flags. 1342 * 1343 * @param flags JS engine flags in a String 1344 * 1345 * @hide pending API solidification 1346 */ 1347 public void setJsFlags(String flags) { 1348 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1349 } 1350 1351 /** 1352 * Inform WebView of the network state. This is used to set 1353 * the javascript property window.navigator.isOnline and 1354 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1355 * @param networkUp boolean indicating if network is available 1356 */ 1357 public void setNetworkAvailable(boolean networkUp) { 1358 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1359 networkUp ? 1 : 0, 0); 1360 } 1361 1362 /** 1363 * Inform WebView about the current network type. 1364 * {@hide} 1365 */ 1366 public void setNetworkType(String type, String subtype) { 1367 Map<String, String> map = new HashMap<String, String>(); 1368 map.put("type", type); 1369 map.put("subtype", subtype); 1370 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1371 } 1372 /** 1373 * Save the state of this WebView used in 1374 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1375 * method no longer stores the display data for this WebView. The previous 1376 * behavior could potentially leak files if {@link #restoreState} was never 1377 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1378 * and restoring the display data. 1379 * @param outState The Bundle to store the WebView state. 1380 * @return The same copy of the back/forward list used to save the state. If 1381 * saveState fails, the returned list will be null. 1382 * @see #savePicture 1383 * @see #restorePicture 1384 */ 1385 public WebBackForwardList saveState(Bundle outState) { 1386 if (outState == null) { 1387 return null; 1388 } 1389 // We grab a copy of the back/forward list because a client of WebView 1390 // may have invalidated the history list by calling clearHistory. 1391 WebBackForwardList list = copyBackForwardList(); 1392 final int currentIndex = list.getCurrentIndex(); 1393 final int size = list.getSize(); 1394 // We should fail saving the state if the list is empty or the index is 1395 // not in a valid range. 1396 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1397 return null; 1398 } 1399 outState.putInt("index", currentIndex); 1400 // FIXME: This should just be a byte[][] instead of ArrayList but 1401 // Parcel.java does not have the code to handle multi-dimensional 1402 // arrays. 1403 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1404 for (int i = 0; i < size; i++) { 1405 WebHistoryItem item = list.getItemAtIndex(i); 1406 if (null == item) { 1407 // FIXME: this shouldn't happen 1408 // need to determine how item got set to null 1409 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1410 return null; 1411 } 1412 byte[] data = item.getFlattenedData(); 1413 if (data == null) { 1414 // It would be very odd to not have any data for a given history 1415 // item. And we will fail to rebuild the history list without 1416 // flattened data. 1417 return null; 1418 } 1419 history.add(data); 1420 } 1421 outState.putSerializable("history", history); 1422 if (mCertificate != null) { 1423 outState.putBundle("certificate", 1424 SslCertificate.saveState(mCertificate)); 1425 } 1426 return list; 1427 } 1428 1429 /** 1430 * Save the current display data to the Bundle given. Used in conjunction 1431 * with {@link #saveState}. 1432 * @param b A Bundle to store the display data. 1433 * @param dest The file to store the serialized picture data. Will be 1434 * overwritten with this WebView's picture data. 1435 * @return True if the picture was successfully saved. 1436 */ 1437 public boolean savePicture(Bundle b, final File dest) { 1438 if (dest == null || b == null) { 1439 return false; 1440 } 1441 final Picture p = capturePicture(); 1442 // Use a temporary file while writing to ensure the destination file 1443 // contains valid data. 1444 final File temp = new File(dest.getPath() + ".writing"); 1445 new Thread(new Runnable() { 1446 public void run() { 1447 FileOutputStream out = null; 1448 try { 1449 out = new FileOutputStream(temp); 1450 p.writeToStream(out); 1451 // Writing the picture succeeded, rename the temporary file 1452 // to the destination. 1453 temp.renameTo(dest); 1454 } catch (Exception e) { 1455 // too late to do anything about it. 1456 } finally { 1457 if (out != null) { 1458 try { 1459 out.close(); 1460 } catch (Exception e) { 1461 // Can't do anything about that 1462 } 1463 } 1464 temp.delete(); 1465 } 1466 } 1467 }).start(); 1468 // now update the bundle 1469 b.putInt("scrollX", mScrollX); 1470 b.putInt("scrollY", mScrollY); 1471 b.putFloat("scale", mActualScale); 1472 b.putFloat("textwrapScale", mTextWrapScale); 1473 b.putBoolean("overview", mInZoomOverview); 1474 return true; 1475 } 1476 1477 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1478 int sx = b.getInt("scrollX", 0); 1479 int sy = b.getInt("scrollY", 0); 1480 float scale = b.getFloat("scale", 1.0f); 1481 mDrawHistory = true; 1482 mHistoryPicture = p; 1483 mScrollX = sx; 1484 mScrollY = sy; 1485 mHistoryWidth = Math.round(p.getWidth() * scale); 1486 mHistoryHeight = Math.round(p.getHeight() * scale); 1487 // as getWidth() / getHeight() of the view are not available yet, set up 1488 // mActualScale, so that when onSizeChanged() is called, the rest will 1489 // be set correctly 1490 mActualScale = scale; 1491 mInvActualScale = 1 / scale; 1492 mTextWrapScale = b.getFloat("textwrapScale", scale); 1493 mInZoomOverview = b.getBoolean("overview"); 1494 invalidate(); 1495 } 1496 1497 /** 1498 * Restore the display data that was save in {@link #savePicture}. Used in 1499 * conjunction with {@link #restoreState}. 1500 * @param b A Bundle containing the saved display data. 1501 * @param src The file where the picture data was stored. 1502 * @return True if the picture was successfully restored. 1503 */ 1504 public boolean restorePicture(Bundle b, File src) { 1505 if (src == null || b == null) { 1506 return false; 1507 } 1508 if (!src.exists()) { 1509 return false; 1510 } 1511 try { 1512 final FileInputStream in = new FileInputStream(src); 1513 final Bundle copy = new Bundle(b); 1514 new Thread(new Runnable() { 1515 public void run() { 1516 try { 1517 final Picture p = Picture.createFromStream(in); 1518 if (p != null) { 1519 // Post a runnable on the main thread to update the 1520 // history picture fields. 1521 mPrivateHandler.post(new Runnable() { 1522 public void run() { 1523 restoreHistoryPictureFields(p, copy); 1524 } 1525 }); 1526 } 1527 } finally { 1528 try { 1529 in.close(); 1530 } catch (Exception e) { 1531 // Nothing we can do now. 1532 } 1533 } 1534 } 1535 }).start(); 1536 } catch (FileNotFoundException e){ 1537 e.printStackTrace(); 1538 } 1539 return true; 1540 } 1541 1542 /** 1543 * Restore the state of this WebView from the given map used in 1544 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1545 * be called to restore the state of the WebView before using the object. If 1546 * it is called after the WebView has had a chance to build state (load 1547 * pages, create a back/forward list, etc.) there may be undesirable 1548 * side-effects. Please note that this method no longer restores the 1549 * display data for this WebView. See {@link #savePicture} and {@link 1550 * #restorePicture} for saving and restoring the display data. 1551 * @param inState The incoming Bundle of state. 1552 * @return The restored back/forward list or null if restoreState failed. 1553 * @see #savePicture 1554 * @see #restorePicture 1555 */ 1556 public WebBackForwardList restoreState(Bundle inState) { 1557 WebBackForwardList returnList = null; 1558 if (inState == null) { 1559 return returnList; 1560 } 1561 if (inState.containsKey("index") && inState.containsKey("history")) { 1562 mCertificate = SslCertificate.restoreState( 1563 inState.getBundle("certificate")); 1564 1565 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1566 final int index = inState.getInt("index"); 1567 // We can't use a clone of the list because we need to modify the 1568 // shared copy, so synchronize instead to prevent concurrent 1569 // modifications. 1570 synchronized (list) { 1571 final List<byte[]> history = 1572 (List<byte[]>) inState.getSerializable("history"); 1573 final int size = history.size(); 1574 // Check the index bounds so we don't crash in native code while 1575 // restoring the history index. 1576 if (index < 0 || index >= size) { 1577 return null; 1578 } 1579 for (int i = 0; i < size; i++) { 1580 byte[] data = history.remove(0); 1581 if (data == null) { 1582 // If we somehow have null data, we cannot reconstruct 1583 // the item and thus our history list cannot be rebuilt. 1584 return null; 1585 } 1586 WebHistoryItem item = new WebHistoryItem(data); 1587 list.addHistoryItem(item); 1588 } 1589 // Grab the most recent copy to return to the caller. 1590 returnList = copyBackForwardList(); 1591 // Update the copy to have the correct index. 1592 returnList.setCurrentIndex(index); 1593 } 1594 // Remove all pending messages because we are restoring previous 1595 // state. 1596 mWebViewCore.removeMessages(); 1597 // Send a restore state message. 1598 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1599 } 1600 return returnList; 1601 } 1602 1603 /** 1604 * Load the given url with the extra headers. 1605 * @param url The url of the resource to load. 1606 * @param extraHeaders The extra headers sent with this url. This should not 1607 * include the common headers like "user-agent". If it does, it 1608 * will be replaced by the intrinsic value of the WebView. 1609 */ 1610 public void loadUrl(String url, Map<String, String> extraHeaders) { 1611 switchOutDrawHistory(); 1612 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1613 arg.mUrl = url; 1614 arg.mExtraHeaders = extraHeaders; 1615 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1616 clearHelpers(); 1617 } 1618 1619 /** 1620 * Load the given url. 1621 * @param url The url of the resource to load. 1622 */ 1623 public void loadUrl(String url) { 1624 if (url == null) { 1625 return; 1626 } 1627 loadUrl(url, null); 1628 } 1629 1630 /** 1631 * Load the url with postData using "POST" method into the WebView. If url 1632 * is not a network url, it will be loaded with {link 1633 * {@link #loadUrl(String)} instead. 1634 * 1635 * @param url The url of the resource to load. 1636 * @param postData The data will be passed to "POST" request. 1637 */ 1638 public void postUrl(String url, byte[] postData) { 1639 if (URLUtil.isNetworkUrl(url)) { 1640 switchOutDrawHistory(); 1641 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1642 arg.mUrl = url; 1643 arg.mPostData = postData; 1644 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1645 clearHelpers(); 1646 } else { 1647 loadUrl(url); 1648 } 1649 } 1650 1651 /** 1652 * Load the given data into the WebView. This will load the data into 1653 * WebView using the data: scheme. Content loaded through this mechanism 1654 * does not have the ability to load content from the network. 1655 * @param data A String of data in the given encoding. The date must 1656 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1657 * %27, %3f respectively. 1658 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1659 * @param encoding The encoding of the data. i.e. utf-8, base64 1660 */ 1661 public void loadData(String data, String mimeType, String encoding) { 1662 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1663 } 1664 1665 /** 1666 * Load the given data into the WebView, use the provided URL as the base 1667 * URL for the content. The base URL is the URL that represents the page 1668 * that is loaded through this interface. As such, it is used to resolve any 1669 * relative URLs. The historyUrl is used for the history entry. 1670 * <p> 1671 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1672 * files through "file:///android_asset/" for the sub resources is more 1673 * restricted. If you provide null or empty string as baseUrl, you won't be 1674 * able to access asset files. If the baseUrl is anything other than 1675 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1676 * sub resources. 1677 * 1678 * @param baseUrl Url to resolve relative paths with, if null defaults to 1679 * "about:blank" 1680 * @param data A String of data in the given encoding. 1681 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1682 * defaults to "text/html" 1683 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1684 * @param historyUrl URL to use as the history entry. Can be null. 1685 */ 1686 public void loadDataWithBaseURL(String baseUrl, String data, 1687 String mimeType, String encoding, String historyUrl) { 1688 1689 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1690 loadData(data, mimeType, encoding); 1691 return; 1692 } 1693 switchOutDrawHistory(); 1694 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1695 arg.mBaseUrl = baseUrl; 1696 arg.mData = data; 1697 arg.mMimeType = mimeType; 1698 arg.mEncoding = encoding; 1699 arg.mHistoryUrl = historyUrl; 1700 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1701 clearHelpers(); 1702 } 1703 1704 /** 1705 * Stop the current load. 1706 */ 1707 public void stopLoading() { 1708 // TODO: should we clear all the messages in the queue before sending 1709 // STOP_LOADING? 1710 switchOutDrawHistory(); 1711 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1712 } 1713 1714 /** 1715 * Reload the current url. 1716 */ 1717 public void reload() { 1718 clearHelpers(); 1719 switchOutDrawHistory(); 1720 mWebViewCore.sendMessage(EventHub.RELOAD); 1721 } 1722 1723 /** 1724 * Return true if this WebView has a back history item. 1725 * @return True iff this WebView has a back history item. 1726 */ 1727 public boolean canGoBack() { 1728 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1729 synchronized (l) { 1730 if (l.getClearPending()) { 1731 return false; 1732 } else { 1733 return l.getCurrentIndex() > 0; 1734 } 1735 } 1736 } 1737 1738 /** 1739 * Go back in the history of this WebView. 1740 */ 1741 public void goBack() { 1742 goBackOrForward(-1); 1743 } 1744 1745 /** 1746 * Return true if this WebView has a forward history item. 1747 * @return True iff this Webview has a forward history item. 1748 */ 1749 public boolean canGoForward() { 1750 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1751 synchronized (l) { 1752 if (l.getClearPending()) { 1753 return false; 1754 } else { 1755 return l.getCurrentIndex() < l.getSize() - 1; 1756 } 1757 } 1758 } 1759 1760 /** 1761 * Go forward in the history of this WebView. 1762 */ 1763 public void goForward() { 1764 goBackOrForward(1); 1765 } 1766 1767 /** 1768 * Return true if the page can go back or forward the given 1769 * number of steps. 1770 * @param steps The negative or positive number of steps to move the 1771 * history. 1772 */ 1773 public boolean canGoBackOrForward(int steps) { 1774 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1775 synchronized (l) { 1776 if (l.getClearPending()) { 1777 return false; 1778 } else { 1779 int newIndex = l.getCurrentIndex() + steps; 1780 return newIndex >= 0 && newIndex < l.getSize(); 1781 } 1782 } 1783 } 1784 1785 /** 1786 * Go to the history item that is the number of steps away from 1787 * the current item. Steps is negative if backward and positive 1788 * if forward. 1789 * @param steps The number of steps to take back or forward in the back 1790 * forward list. 1791 */ 1792 public void goBackOrForward(int steps) { 1793 goBackOrForward(steps, false); 1794 } 1795 1796 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1797 if (steps != 0) { 1798 clearHelpers(); 1799 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1800 ignoreSnapshot ? 1 : 0); 1801 } 1802 } 1803 1804 private boolean extendScroll(int y) { 1805 int finalY = mScroller.getFinalY(); 1806 int newY = pinLocY(finalY + y); 1807 if (newY == finalY) return false; 1808 mScroller.setFinalY(newY); 1809 mScroller.extendDuration(computeDuration(0, y)); 1810 return true; 1811 } 1812 1813 /** 1814 * Scroll the contents of the view up by half the view size 1815 * @param top true to jump to the top of the page 1816 * @return true if the page was scrolled 1817 */ 1818 public boolean pageUp(boolean top) { 1819 if (mNativeClass == 0) { 1820 return false; 1821 } 1822 nativeClearCursor(); // start next trackball movement from page edge 1823 if (top) { 1824 // go to the top of the document 1825 return pinScrollTo(mScrollX, 0, true, 0); 1826 } 1827 // Page up 1828 int h = getHeight(); 1829 int y; 1830 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1831 y = -h + PAGE_SCROLL_OVERLAP; 1832 } else { 1833 y = -h / 2; 1834 } 1835 mUserScroll = true; 1836 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1837 : extendScroll(y); 1838 } 1839 1840 /** 1841 * Scroll the contents of the view down by half the page size 1842 * @param bottom true to jump to bottom of page 1843 * @return true if the page was scrolled 1844 */ 1845 public boolean pageDown(boolean bottom) { 1846 if (mNativeClass == 0) { 1847 return false; 1848 } 1849 nativeClearCursor(); // start next trackball movement from page edge 1850 if (bottom) { 1851 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 1852 } 1853 // Page down. 1854 int h = getHeight(); 1855 int y; 1856 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1857 y = h - PAGE_SCROLL_OVERLAP; 1858 } else { 1859 y = h / 2; 1860 } 1861 mUserScroll = true; 1862 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1863 : extendScroll(y); 1864 } 1865 1866 /** 1867 * Clear the view so that onDraw() will draw nothing but white background, 1868 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1869 */ 1870 public void clearView() { 1871 mContentWidth = 0; 1872 mContentHeight = 0; 1873 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1874 } 1875 1876 /** 1877 * Return a new picture that captures the current display of the webview. 1878 * This is a copy of the display, and will be unaffected if the webview 1879 * later loads a different URL. 1880 * 1881 * @return a picture containing the current contents of the view. Note this 1882 * picture is of the entire document, and is not restricted to the 1883 * bounds of the view. 1884 */ 1885 public Picture capturePicture() { 1886 if (null == mWebViewCore) return null; // check for out of memory tab 1887 return mWebViewCore.copyContentPicture(); 1888 } 1889 1890 /** 1891 * Return true if the browser is displaying a TextView for text input. 1892 */ 1893 private boolean inEditingMode() { 1894 return mWebTextView != null && mWebTextView.getParent() != null; 1895 } 1896 1897 /** 1898 * Remove the WebTextView. 1899 * @param disableFocusController If true, send a message to webkit 1900 * disabling the focus controller, so the caret stops blinking. 1901 */ 1902 private void clearTextEntry(boolean disableFocusController) { 1903 if (inEditingMode()) { 1904 mWebTextView.remove(); 1905 if (disableFocusController) { 1906 setFocusControllerInactive(); 1907 } 1908 } 1909 } 1910 1911 /** 1912 * Return the current scale of the WebView 1913 * @return The current scale. 1914 */ 1915 public float getScale() { 1916 return mActualScale; 1917 } 1918 1919 /** 1920 * Set the initial scale for the WebView. 0 means default. If 1921 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1922 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1923 * WebView starts will this value as initial scale. 1924 * 1925 * @param scaleInPercent The initial scale in percent. 1926 */ 1927 public void setInitialScale(int scaleInPercent) { 1928 mInitialScaleInPercent = scaleInPercent; 1929 } 1930 1931 /** 1932 * Invoke the graphical zoom picker widget for this WebView. This will 1933 * result in the zoom widget appearing on the screen to control the zoom 1934 * level of this WebView. 1935 */ 1936 public void invokeZoomPicker() { 1937 if (!getSettings().supportZoom()) { 1938 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1939 return; 1940 } 1941 clearTextEntry(false); 1942 if (getSettings().getBuiltInZoomControls()) { 1943 getZoomButtonsController().setVisible(true); 1944 } else { 1945 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1946 mPrivateHandler.postDelayed(mZoomControlRunnable, 1947 ZOOM_CONTROLS_TIMEOUT); 1948 } 1949 } 1950 1951 /** 1952 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1953 * is found and the anchor has a non-javascript url, the HitTestResult type 1954 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1955 * anchor does not have a url or if it is a javascript url, the type will 1956 * be UNKNOWN_TYPE and the url has to be retrieved through 1957 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1958 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1959 * the "extra" field. A type of 1960 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1961 * a child node. If a phone number is found, the HitTestResult type is set 1962 * to PHONE_TYPE and the phone number is set in the "extra" field of 1963 * HitTestResult. If a map address is found, the HitTestResult type is set 1964 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1965 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1966 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1967 * HitTestResult type is set to UNKNOWN_TYPE. 1968 */ 1969 public HitTestResult getHitTestResult() { 1970 if (mNativeClass == 0) { 1971 return null; 1972 } 1973 1974 HitTestResult result = new HitTestResult(); 1975 if (nativeHasCursorNode()) { 1976 if (nativeCursorIsTextInput()) { 1977 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1978 } else { 1979 String text = nativeCursorText(); 1980 if (text != null) { 1981 if (text.startsWith(SCHEME_TEL)) { 1982 result.setType(HitTestResult.PHONE_TYPE); 1983 result.setExtra(text.substring(SCHEME_TEL.length())); 1984 } else if (text.startsWith(SCHEME_MAILTO)) { 1985 result.setType(HitTestResult.EMAIL_TYPE); 1986 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1987 } else if (text.startsWith(SCHEME_GEO)) { 1988 result.setType(HitTestResult.GEO_TYPE); 1989 result.setExtra(URLDecoder.decode(text 1990 .substring(SCHEME_GEO.length()))); 1991 } else if (nativeCursorIsAnchor()) { 1992 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1993 result.setExtra(text); 1994 } 1995 } 1996 } 1997 } 1998 int type = result.getType(); 1999 if (type == HitTestResult.UNKNOWN_TYPE 2000 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2001 // Now check to see if it is an image. 2002 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2003 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2004 String text = nativeImageURI(contentX, contentY); 2005 if (text != null) { 2006 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2007 HitTestResult.IMAGE_TYPE : 2008 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2009 result.setExtra(text); 2010 } 2011 } 2012 return result; 2013 } 2014 2015 // Called by JNI when the DOM has changed the focus. Clear the focus so 2016 // that new keys will go to the newly focused field 2017 private void domChangedFocus() { 2018 if (inEditingMode()) { 2019 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2020 } 2021 } 2022 /** 2023 * Request the href of an anchor element due to getFocusNodePath returning 2024 * "href." If hrefMsg is null, this method returns immediately and does not 2025 * dispatch hrefMsg to its target. 2026 * 2027 * @param hrefMsg This message will be dispatched with the result of the 2028 * request as the data member with "url" as key. The result can 2029 * be null. 2030 */ 2031 // FIXME: API change required to change the name of this function. We now 2032 // look at the cursor node, and not the focus node. Also, what is 2033 // getFocusNodePath? 2034 public void requestFocusNodeHref(Message hrefMsg) { 2035 if (hrefMsg == null || mNativeClass == 0) { 2036 return; 2037 } 2038 if (nativeCursorIsAnchor()) { 2039 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2040 nativeCursorFramePointer(), nativeCursorNodePointer(), 2041 hrefMsg); 2042 } 2043 } 2044 2045 /** 2046 * Request the url of the image last touched by the user. msg will be sent 2047 * to its target with a String representing the url as its object. 2048 * 2049 * @param msg This message will be dispatched with the result of the request 2050 * as the data member with "url" as key. The result can be null. 2051 */ 2052 public void requestImageRef(Message msg) { 2053 if (0 == mNativeClass) return; // client isn't initialized 2054 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2055 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2056 String ref = nativeImageURI(contentX, contentY); 2057 Bundle data = msg.getData(); 2058 data.putString("url", ref); 2059 msg.setData(data); 2060 msg.sendToTarget(); 2061 } 2062 2063 private static int pinLoc(int x, int viewMax, int docMax) { 2064// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2065 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2066 // pin the short document to the top/left of the screen 2067 x = 0; 2068// Log.d(LOGTAG, "--- center " + x); 2069 } else if (x < 0) { 2070 x = 0; 2071// Log.d(LOGTAG, "--- zero"); 2072 } else if (x + viewMax > docMax) { 2073 x = docMax - viewMax; 2074// Log.d(LOGTAG, "--- pin " + x); 2075 } 2076 return x; 2077 } 2078 2079 // Expects x in view coordinates 2080 private int pinLocX(int x) { 2081 if (mInOverScrollMode) return x; 2082 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2083 } 2084 2085 // Expects y in view coordinates 2086 private int pinLocY(int y) { 2087 if (mInOverScrollMode) return y; 2088 return pinLoc(y, getViewHeightWithTitle(), 2089 computeRealVerticalScrollRange() + getTitleHeight()); 2090 } 2091 2092 /** 2093 * A title bar which is embedded in this WebView, and scrolls along with it 2094 * vertically, but not horizontally. 2095 */ 2096 private View mTitleBar; 2097 2098 /** 2099 * Since we draw the title bar ourselves, we removed the shadow from the 2100 * browser's activity. We do want a shadow at the bottom of the title bar, 2101 * or at the top of the screen if the title bar is not visible. This 2102 * drawable serves that purpose. 2103 */ 2104 private Drawable mTitleShadow; 2105 2106 /** 2107 * Add or remove a title bar to be embedded into the WebView, and scroll 2108 * along with it vertically, while remaining in view horizontally. Pass 2109 * null to remove the title bar from the WebView, and return to drawing 2110 * the WebView normally without translating to account for the title bar. 2111 * @hide 2112 */ 2113 public void setEmbeddedTitleBar(View v) { 2114 if (mTitleBar == v) return; 2115 if (mTitleBar != null) { 2116 removeView(mTitleBar); 2117 } 2118 if (null != v) { 2119 addView(v, new AbsoluteLayout.LayoutParams( 2120 ViewGroup.LayoutParams.MATCH_PARENT, 2121 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2122 if (mTitleShadow == null) { 2123 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 2124 com.android.internal.R.drawable.title_bar_shadow); 2125 } 2126 } 2127 mTitleBar = v; 2128 } 2129 2130 /** 2131 * Given a distance in view space, convert it to content space. Note: this 2132 * does not reflect translation, just scaling, so this should not be called 2133 * with coordinates, but should be called for dimensions like width or 2134 * height. 2135 */ 2136 private int viewToContentDimension(int d) { 2137 return Math.round(d * mInvActualScale); 2138 } 2139 2140 /** 2141 * Given an x coordinate in view space, convert it to content space. Also 2142 * may be used for absolute heights (such as for the WebTextView's 2143 * textSize, which is unaffected by the height of the title bar). 2144 */ 2145 /*package*/ int viewToContentX(int x) { 2146 return viewToContentDimension(x); 2147 } 2148 2149 /** 2150 * Given a y coordinate in view space, convert it to content space. 2151 * Takes into account the height of the title bar if there is one 2152 * embedded into the WebView. 2153 */ 2154 /*package*/ int viewToContentY(int y) { 2155 return viewToContentDimension(y - getTitleHeight()); 2156 } 2157 2158 /** 2159 * Given a x coordinate in view space, convert it to content space. 2160 * Returns the result as a float. 2161 */ 2162 private float viewToContentXf(int x) { 2163 return x * mInvActualScale; 2164 } 2165 2166 /** 2167 * Given a y coordinate in view space, convert it to content space. 2168 * Takes into account the height of the title bar if there is one 2169 * embedded into the WebView. Returns the result as a float. 2170 */ 2171 private float viewToContentYf(int y) { 2172 return (y - getTitleHeight()) * mInvActualScale; 2173 } 2174 2175 /** 2176 * Given a distance in content space, convert it to view space. Note: this 2177 * does not reflect translation, just scaling, so this should not be called 2178 * with coordinates, but should be called for dimensions like width or 2179 * height. 2180 */ 2181 /*package*/ int contentToViewDimension(int d) { 2182 return Math.round(d * mActualScale); 2183 } 2184 2185 /** 2186 * Given an x coordinate in content space, convert it to view 2187 * space. 2188 */ 2189 /*package*/ int contentToViewX(int x) { 2190 return contentToViewDimension(x); 2191 } 2192 2193 /** 2194 * Given a y coordinate in content space, convert it to view 2195 * space. Takes into account the height of the title bar. 2196 */ 2197 /*package*/ int contentToViewY(int y) { 2198 return contentToViewDimension(y) + getTitleHeight(); 2199 } 2200 2201 private Rect contentToViewRect(Rect x) { 2202 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2203 contentToViewX(x.right), contentToViewY(x.bottom)); 2204 } 2205 2206 /* To invalidate a rectangle in content coordinates, we need to transform 2207 the rect into view coordinates, so we can then call invalidate(...). 2208 2209 Normally, we would just call contentToView[XY](...), which eventually 2210 calls Math.round(coordinate * mActualScale). However, for invalidates, 2211 we need to account for the slop that occurs with antialiasing. To 2212 address that, we are a little more liberal in the size of the rect that 2213 we invalidate. 2214 2215 This liberal calculation calls floor() for the top/left, and ceil() for 2216 the bottom/right coordinates. This catches the possible extra pixels of 2217 antialiasing that we might have missed with just round(). 2218 */ 2219 2220 // Called by JNI to invalidate the View, given rectangle coordinates in 2221 // content space 2222 private void viewInvalidate(int l, int t, int r, int b) { 2223 final float scale = mActualScale; 2224 final int dy = getTitleHeight(); 2225 invalidate((int)Math.floor(l * scale), 2226 (int)Math.floor(t * scale) + dy, 2227 (int)Math.ceil(r * scale), 2228 (int)Math.ceil(b * scale) + dy); 2229 } 2230 2231 // Called by JNI to invalidate the View after a delay, given rectangle 2232 // coordinates in content space 2233 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2234 final float scale = mActualScale; 2235 final int dy = getTitleHeight(); 2236 postInvalidateDelayed(delay, 2237 (int)Math.floor(l * scale), 2238 (int)Math.floor(t * scale) + dy, 2239 (int)Math.ceil(r * scale), 2240 (int)Math.ceil(b * scale) + dy); 2241 } 2242 2243 private void invalidateContentRect(Rect r) { 2244 viewInvalidate(r.left, r.top, r.right, r.bottom); 2245 } 2246 2247 // stop the scroll animation, and don't let a subsequent fling add 2248 // to the existing velocity 2249 private void abortAnimation() { 2250 mScroller.abortAnimation(); 2251 mLastVelocity = 0; 2252 } 2253 2254 /* call from webcoreview.draw(), so we're still executing in the UI thread 2255 */ 2256 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2257 2258 // premature data from webkit, ignore 2259 if ((w | h) == 0) { 2260 return; 2261 } 2262 2263 // don't abort a scroll animation if we didn't change anything 2264 if (mContentWidth != w || mContentHeight != h) { 2265 // record new dimensions 2266 mContentWidth = w; 2267 mContentHeight = h; 2268 // If history Picture is drawn, don't update scroll. They will be 2269 // updated when we get out of that mode. 2270 if (!mDrawHistory) { 2271 // repin our scroll, taking into account the new content size 2272 int oldX = mScrollX; 2273 int oldY = mScrollY; 2274 mScrollX = pinLocX(mScrollX); 2275 mScrollY = pinLocY(mScrollY); 2276 if (oldX != mScrollX || oldY != mScrollY) { 2277 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2278 } 2279 if (!mScroller.isFinished()) { 2280 // We are in the middle of a scroll. Repin the final scroll 2281 // position. 2282 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2283 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2284 } 2285 } 2286 } 2287 contentSizeChanged(updateLayout); 2288 } 2289 2290 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2291 boolean force) { 2292 if (scale < mMinZoomScale) { 2293 scale = mMinZoomScale; 2294 // set mInZoomOverview for non mobile sites 2295 if (scale < mDefaultScale) mInZoomOverview = true; 2296 } else if (scale > mMaxZoomScale) { 2297 scale = mMaxZoomScale; 2298 } 2299 if (updateTextWrapScale) { 2300 mTextWrapScale = scale; 2301 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2302 mLastHeightSent = 0; 2303 } 2304 if (scale != mActualScale || force) { 2305 if (mDrawHistory) { 2306 // If history Picture is drawn, don't update scroll. They will 2307 // be updated when we get out of that mode. 2308 if (scale != mActualScale && !mPreviewZoomOnly) { 2309 mCallbackProxy.onScaleChanged(mActualScale, scale); 2310 } 2311 mActualScale = scale; 2312 mInvActualScale = 1 / scale; 2313 sendViewSizeZoom(); 2314 } else { 2315 // update our scroll so we don't appear to jump 2316 // i.e. keep the center of the doc in the center of the view 2317 2318 int oldX = mScrollX; 2319 int oldY = mScrollY; 2320 float ratio = scale * mInvActualScale; // old inverse 2321 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2322 float sy = ratio * oldY + (ratio - 1) 2323 * (mZoomCenterY - getTitleHeight()); 2324 2325 // now update our new scale and inverse 2326 if (scale != mActualScale && !mPreviewZoomOnly) { 2327 mCallbackProxy.onScaleChanged(mActualScale, scale); 2328 } 2329 mActualScale = scale; 2330 mInvActualScale = 1 / scale; 2331 2332 // Scale all the child views 2333 mViewManager.scaleAll(); 2334 2335 // as we don't have animation for scaling, don't do animation 2336 // for scrolling, as it causes weird intermediate state 2337 // pinScrollTo(Math.round(sx), Math.round(sy)); 2338 mScrollX = pinLocX(Math.round(sx)); 2339 mScrollY = pinLocY(Math.round(sy)); 2340 2341 // update webkit 2342 if (oldX != mScrollX || oldY != mScrollY) { 2343 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2344 } else { 2345 // the scroll position is adjusted at the beginning of the 2346 // zoom animation. But we want to update the WebKit at the 2347 // end of the zoom animation. See comments in onScaleEnd(). 2348 sendOurVisibleRect(); 2349 } 2350 sendViewSizeZoom(); 2351 } 2352 } 2353 } 2354 2355 // Used to avoid sending many visible rect messages. 2356 private Rect mLastVisibleRectSent; 2357 private Rect mLastGlobalRect; 2358 2359 private Rect sendOurVisibleRect() { 2360 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2361 2362 Rect rect = new Rect(); 2363 calcOurContentVisibleRect(rect); 2364 // Rect.equals() checks for null input. 2365 if (!rect.equals(mLastVisibleRectSent)) { 2366 Point pos = new Point(rect.left, rect.top); 2367 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2368 nativeMoveGeneration(), 0, pos); 2369 mLastVisibleRectSent = rect; 2370 } 2371 Rect globalRect = new Rect(); 2372 if (getGlobalVisibleRect(globalRect) 2373 && !globalRect.equals(mLastGlobalRect)) { 2374 if (DebugFlags.WEB_VIEW) { 2375 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2376 + globalRect.top + ",r=" + globalRect.right + ",b=" 2377 + globalRect.bottom); 2378 } 2379 // TODO: the global offset is only used by windowRect() 2380 // in ChromeClientAndroid ; other clients such as touch 2381 // and mouse events could return view + screen relative points. 2382 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2383 mLastGlobalRect = globalRect; 2384 } 2385 return rect; 2386 } 2387 2388 // Sets r to be the visible rectangle of our webview in view coordinates 2389 private void calcOurVisibleRect(Rect r) { 2390 Point p = new Point(); 2391 getGlobalVisibleRect(r, p); 2392 r.offset(-p.x, -p.y); 2393 if (mFindIsUp) { 2394 r.bottom -= mFindHeight; 2395 } 2396 } 2397 2398 // Sets r to be our visible rectangle in content coordinates 2399 private void calcOurContentVisibleRect(Rect r) { 2400 calcOurVisibleRect(r); 2401 // since we might overscroll, pin the rect to the bounds of the content 2402 r.left = Math.max(viewToContentX(r.left), 0); 2403 // viewToContentY will remove the total height of the title bar. Add 2404 // the visible height back in to account for the fact that if the title 2405 // bar is partially visible, the part of the visible rect which is 2406 // displaying our content is displaced by that amount. 2407 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2408 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2409 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2410 } 2411 2412 // Sets r to be our visible rectangle in content coordinates. We use this 2413 // method on the native side to compute the position of the fixed layers. 2414 // Uses floating coordinates (necessary to correctly place elements when 2415 // the scale factor is not 1) 2416 private void calcOurContentVisibleRectF(RectF r) { 2417 Rect ri = new Rect(0,0,0,0); 2418 calcOurVisibleRect(ri); 2419 // pin the rect to the bounds of the content 2420 r.left = Math.max(viewToContentXf(ri.left), 0.0f); 2421 // viewToContentY will remove the total height of the title bar. Add 2422 // the visible height back in to account for the fact that if the title 2423 // bar is partially visible, the part of the visible rect which is 2424 // displaying our content is displaced by that amount. 2425 r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f); 2426 r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth); 2427 r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight); 2428 } 2429 2430 static class ViewSizeData { 2431 int mWidth; 2432 int mHeight; 2433 int mTextWrapWidth; 2434 int mAnchorX; 2435 int mAnchorY; 2436 float mScale; 2437 boolean mIgnoreHeight; 2438 } 2439 2440 /** 2441 * Compute unzoomed width and height, and if they differ from the last 2442 * values we sent, send them to webkit (to be used has new viewport) 2443 * 2444 * @return true if new values were sent 2445 */ 2446 private boolean sendViewSizeZoom() { 2447 if (mPreviewZoomOnly) return false; 2448 2449 int viewWidth = getViewWidth(); 2450 int newWidth = Math.round(viewWidth * mInvActualScale); 2451 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2452 /* 2453 * Because the native side may have already done a layout before the 2454 * View system was able to measure us, we have to send a height of 0 to 2455 * remove excess whitespace when we grow our width. This will trigger a 2456 * layout and a change in content size. This content size change will 2457 * mean that contentSizeChanged will either call this method directly or 2458 * indirectly from onSizeChanged. 2459 */ 2460 if (newWidth > mLastWidthSent && mWrapContent) { 2461 newHeight = 0; 2462 } 2463 // Avoid sending another message if the dimensions have not changed. 2464 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2465 ViewSizeData data = new ViewSizeData(); 2466 data.mWidth = newWidth; 2467 data.mHeight = newHeight; 2468 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2469 data.mScale = mActualScale; 2470 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2471 data.mAnchorX = mAnchorX; 2472 data.mAnchorY = mAnchorY; 2473 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2474 mLastWidthSent = newWidth; 2475 mLastHeightSent = newHeight; 2476 mAnchorX = mAnchorY = 0; 2477 return true; 2478 } 2479 return false; 2480 } 2481 2482 private int computeRealHorizontalScrollRange() { 2483 if (mDrawHistory) { 2484 return mHistoryWidth; 2485 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2486 && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2487 // only honor the scrollbar mode when it is at minimum zoom level 2488 return computeHorizontalScrollExtent(); 2489 } else { 2490 // to avoid rounding error caused unnecessary scrollbar, use floor 2491 return (int) Math.floor(mContentWidth * mActualScale); 2492 } 2493 } 2494 2495 @Override 2496 protected int computeHorizontalScrollRange() { 2497 int range = computeRealHorizontalScrollRange(); 2498 2499 // Adjust reported range if overscrolled to compress the scroll bars 2500 final int scrollX = mScrollX; 2501 final int overscrollRight = computeMaxScrollX(); 2502 if (scrollX < 0) { 2503 range -= scrollX; 2504 } else if (scrollX > overscrollRight) { 2505 range += scrollX - overscrollRight; 2506 } 2507 2508 return range; 2509 } 2510 2511 @Override 2512 protected int computeHorizontalScrollOffset() { 2513 return Math.max(mScrollX, 0); 2514 } 2515 2516 private int computeRealVerticalScrollRange() { 2517 if (mDrawHistory) { 2518 return mHistoryHeight; 2519 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2520 && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2521 // only honor the scrollbar mode when it is at minimum zoom level 2522 return computeVerticalScrollExtent(); 2523 } else { 2524 // to avoid rounding error caused unnecessary scrollbar, use floor 2525 return (int) Math.floor(mContentHeight * mActualScale); 2526 } 2527 } 2528 2529 @Override 2530 protected int computeVerticalScrollRange() { 2531 int range = computeRealVerticalScrollRange(); 2532 2533 // Adjust reported range if overscrolled to compress the scroll bars 2534 final int scrollY = mScrollY; 2535 final int overscrollBottom = computeMaxScrollY(); 2536 if (scrollY < 0) { 2537 range -= scrollY; 2538 } else if (scrollY > overscrollBottom) { 2539 range += scrollY - overscrollBottom; 2540 } 2541 2542 return range; 2543 } 2544 2545 @Override 2546 protected int computeVerticalScrollOffset() { 2547 return Math.max(mScrollY - getTitleHeight(), 0); 2548 } 2549 2550 @Override 2551 protected int computeVerticalScrollExtent() { 2552 return getViewHeight(); 2553 } 2554 2555 /** @hide */ 2556 @Override 2557 protected void onDrawVerticalScrollBar(Canvas canvas, 2558 Drawable scrollBar, 2559 int l, int t, int r, int b) { 2560 if (mScrollY < 0) { 2561 t -= mScrollY; 2562 } 2563 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2564 scrollBar.draw(canvas); 2565 } 2566 2567 @Override 2568 protected void onOverscrolled(int scrollX, int scrollY, boolean clampedX, 2569 boolean clampedY) { 2570 mInOverScrollMode = false; 2571 int maxX = computeMaxScrollX(); 2572 if (maxX == 0) { 2573 // do not over scroll x if the page just fits the screen 2574 scrollX = pinLocX(scrollX); 2575 } else if (scrollX < 0 || scrollX > maxX) { 2576 mInOverScrollMode = true; 2577 } 2578 if (scrollY < 0 || scrollY > computeMaxScrollY()) { 2579 mInOverScrollMode = true; 2580 } 2581 2582 super.scrollTo(scrollX, scrollY); 2583 } 2584 2585 /** 2586 * Get the url for the current page. This is not always the same as the url 2587 * passed to WebViewClient.onPageStarted because although the load for 2588 * that url has begun, the current page may not have changed. 2589 * @return The url for the current page. 2590 */ 2591 public String getUrl() { 2592 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2593 return h != null ? h.getUrl() : null; 2594 } 2595 2596 /** 2597 * Get the original url for the current page. This is not always the same 2598 * as the url passed to WebViewClient.onPageStarted because although the 2599 * load for that url has begun, the current page may not have changed. 2600 * Also, there may have been redirects resulting in a different url to that 2601 * originally requested. 2602 * @return The url that was originally requested for the current page. 2603 */ 2604 public String getOriginalUrl() { 2605 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2606 return h != null ? h.getOriginalUrl() : null; 2607 } 2608 2609 /** 2610 * Get the title for the current page. This is the title of the current page 2611 * until WebViewClient.onReceivedTitle is called. 2612 * @return The title for the current page. 2613 */ 2614 public String getTitle() { 2615 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2616 return h != null ? h.getTitle() : null; 2617 } 2618 2619 /** 2620 * Get the favicon for the current page. This is the favicon of the current 2621 * page until WebViewClient.onReceivedIcon is called. 2622 * @return The favicon for the current page. 2623 */ 2624 public Bitmap getFavicon() { 2625 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2626 return h != null ? h.getFavicon() : null; 2627 } 2628 2629 /** 2630 * Get the touch icon url for the apple-touch-icon <link> element. 2631 * @hide 2632 */ 2633 public String getTouchIconUrl() { 2634 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2635 return h != null ? h.getTouchIconUrl() : null; 2636 } 2637 2638 /** 2639 * Get the progress for the current page. 2640 * @return The progress for the current page between 0 and 100. 2641 */ 2642 public int getProgress() { 2643 return mCallbackProxy.getProgress(); 2644 } 2645 2646 /** 2647 * @return the height of the HTML content. 2648 */ 2649 public int getContentHeight() { 2650 return mContentHeight; 2651 } 2652 2653 /** 2654 * @return the width of the HTML content. 2655 * @hide 2656 */ 2657 public int getContentWidth() { 2658 return mContentWidth; 2659 } 2660 2661 /** 2662 * Pause all layout, parsing, and javascript timers for all webviews. This 2663 * is a global requests, not restricted to just this webview. This can be 2664 * useful if the application has been paused. 2665 */ 2666 public void pauseTimers() { 2667 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2668 } 2669 2670 /** 2671 * Resume all layout, parsing, and javascript timers for all webviews. 2672 * This will resume dispatching all timers. 2673 */ 2674 public void resumeTimers() { 2675 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2676 } 2677 2678 /** 2679 * Call this to pause any extra processing associated with this view and 2680 * its associated DOM/plugins/javascript/etc. For example, if the view is 2681 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2682 * network traffic. When the view is again "active", call onResume(). 2683 * 2684 * Note that this differs from pauseTimers(), which affects all views/DOMs 2685 * @hide 2686 */ 2687 public void onPause() { 2688 if (!mIsPaused) { 2689 mIsPaused = true; 2690 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2691 } 2692 } 2693 2694 /** 2695 * Call this to balanace a previous call to onPause() 2696 * @hide 2697 */ 2698 public void onResume() { 2699 if (mIsPaused) { 2700 mIsPaused = false; 2701 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2702 } 2703 } 2704 2705 /** 2706 * Returns true if the view is paused, meaning onPause() was called. Calling 2707 * onResume() sets the paused state back to false. 2708 * @hide 2709 */ 2710 public boolean isPaused() { 2711 return mIsPaused; 2712 } 2713 2714 /** 2715 * Call this to inform the view that memory is low so that it can 2716 * free any available memory. 2717 */ 2718 public void freeMemory() { 2719 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2720 } 2721 2722 /** 2723 * Clear the resource cache. Note that the cache is per-application, so 2724 * this will clear the cache for all WebViews used. 2725 * 2726 * @param includeDiskFiles If false, only the RAM cache is cleared. 2727 */ 2728 public void clearCache(boolean includeDiskFiles) { 2729 // Note: this really needs to be a static method as it clears cache for all 2730 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2731 // we can't make this static. 2732 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2733 includeDiskFiles ? 1 : 0, 0); 2734 } 2735 2736 /** 2737 * Make sure that clearing the form data removes the adapter from the 2738 * currently focused textfield if there is one. 2739 */ 2740 public void clearFormData() { 2741 if (inEditingMode()) { 2742 AutoCompleteAdapter adapter = null; 2743 mWebTextView.setAdapterCustom(adapter); 2744 } 2745 } 2746 2747 /** 2748 * Tell the WebView to clear its internal back/forward list. 2749 */ 2750 public void clearHistory() { 2751 mCallbackProxy.getBackForwardList().setClearPending(); 2752 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2753 } 2754 2755 /** 2756 * Clear the SSL preferences table stored in response to proceeding with SSL 2757 * certificate errors. 2758 */ 2759 public void clearSslPreferences() { 2760 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2761 } 2762 2763 /** 2764 * Return the WebBackForwardList for this WebView. This contains the 2765 * back/forward list for use in querying each item in the history stack. 2766 * This is a copy of the private WebBackForwardList so it contains only a 2767 * snapshot of the current state. Multiple calls to this method may return 2768 * different objects. The object returned from this method will not be 2769 * updated to reflect any new state. 2770 */ 2771 public WebBackForwardList copyBackForwardList() { 2772 return mCallbackProxy.getBackForwardList().clone(); 2773 } 2774 2775 /* 2776 * Highlight and scroll to the next occurance of String in findAll. 2777 * Wraps the page infinitely, and scrolls. Must be called after 2778 * calling findAll. 2779 * 2780 * @param forward Direction to search. 2781 */ 2782 public void findNext(boolean forward) { 2783 if (0 == mNativeClass) return; // client isn't initialized 2784 nativeFindNext(forward); 2785 } 2786 2787 /* 2788 * Find all instances of find on the page and highlight them. 2789 * @param find String to find. 2790 * @return int The number of occurances of the String "find" 2791 * that were found. 2792 */ 2793 public int findAll(String find) { 2794 if (0 == mNativeClass) return 0; // client isn't initialized 2795 int result = find != null ? nativeFindAll(find.toLowerCase(), 2796 find.toUpperCase()) : 0; 2797 invalidate(); 2798 mLastFind = find; 2799 return result; 2800 } 2801 2802 /** 2803 * @hide 2804 */ 2805 public void setFindIsUp(boolean isUp) { 2806 mFindIsUp = isUp; 2807 if (isUp) { 2808 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2809 false); 2810 } 2811 if (0 == mNativeClass) return; // client isn't initialized 2812 nativeSetFindIsUp(isUp); 2813 } 2814 2815 /** 2816 * @hide 2817 */ 2818 public int findIndex() { 2819 if (0 == mNativeClass) return -1; 2820 return nativeFindIndex(); 2821 } 2822 2823 // Used to know whether the find dialog is open. Affects whether 2824 // or not we draw the highlights for matches. 2825 private boolean mFindIsUp; 2826 2827 private int mFindHeight; 2828 // Keep track of the last string sent, so we can search again after an 2829 // orientation change or the dismissal of the soft keyboard. 2830 private String mLastFind; 2831 2832 /** 2833 * Return the first substring consisting of the address of a physical 2834 * location. Currently, only addresses in the United States are detected, 2835 * and consist of: 2836 * - a house number 2837 * - a street name 2838 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2839 * - a city name 2840 * - a state or territory, either spelled out or two-letter abbr. 2841 * - an optional 5 digit or 9 digit zip code. 2842 * 2843 * All names must be correctly capitalized, and the zip code, if present, 2844 * must be valid for the state. The street type must be a standard USPS 2845 * spelling or abbreviation. The state or territory must also be spelled 2846 * or abbreviated using USPS standards. The house number may not exceed 2847 * five digits. 2848 * @param addr The string to search for addresses. 2849 * 2850 * @return the address, or if no address is found, return null. 2851 */ 2852 public static String findAddress(String addr) { 2853 return findAddress(addr, false); 2854 } 2855 2856 /** 2857 * @hide 2858 * Return the first substring consisting of the address of a physical 2859 * location. Currently, only addresses in the United States are detected, 2860 * and consist of: 2861 * - a house number 2862 * - a street name 2863 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2864 * - a city name 2865 * - a state or territory, either spelled out or two-letter abbr. 2866 * - an optional 5 digit or 9 digit zip code. 2867 * 2868 * Names are optionally capitalized, and the zip code, if present, 2869 * must be valid for the state. The street type must be a standard USPS 2870 * spelling or abbreviation. The state or territory must also be spelled 2871 * or abbreviated using USPS standards. The house number may not exceed 2872 * five digits. 2873 * @param addr The string to search for addresses. 2874 * @param caseInsensitive addr Set to true to make search ignore case. 2875 * 2876 * @return the address, or if no address is found, return null. 2877 */ 2878 public static String findAddress(String addr, boolean caseInsensitive) { 2879 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2880 } 2881 2882 /* 2883 * Clear the highlighting surrounding text matches created by findAll. 2884 */ 2885 public void clearMatches() { 2886 mLastFind = ""; 2887 if (mNativeClass == 0) 2888 return; 2889 nativeSetFindIsEmpty(); 2890 invalidate(); 2891 } 2892 2893 /** 2894 * @hide 2895 */ 2896 public void notifyFindDialogDismissed() { 2897 if (mWebViewCore == null) { 2898 return; 2899 } 2900 clearMatches(); 2901 setFindIsUp(false); 2902 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2903 false); 2904 // Now that the dialog has been removed, ensure that we scroll to a 2905 // location that is not beyond the end of the page. 2906 pinScrollTo(mScrollX, mScrollY, false, 0); 2907 invalidate(); 2908 } 2909 2910 /** 2911 * @hide 2912 */ 2913 public void setFindDialogHeight(int height) { 2914 if (DebugFlags.WEB_VIEW) { 2915 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2916 } 2917 mFindHeight = height; 2918 } 2919 2920 /** 2921 * Query the document to see if it contains any image references. The 2922 * message object will be dispatched with arg1 being set to 1 if images 2923 * were found and 0 if the document does not reference any images. 2924 * @param response The message that will be dispatched with the result. 2925 */ 2926 public void documentHasImages(Message response) { 2927 if (response == null) { 2928 return; 2929 } 2930 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2931 } 2932 2933 @Override 2934 public void computeScroll() { 2935 if (mScroller.computeScrollOffset()) { 2936 int oldX = mScrollX; 2937 int oldY = mScrollY; 2938 int x = mScroller.getCurrX(); 2939 int y = mScroller.getCurrY(); 2940 invalidate(); // So we draw again 2941 2942 if (oldX != x || oldY != y) { 2943 final int rangeX = computeMaxScrollX(); 2944 final int rangeY = computeMaxScrollY(); 2945 overscrollBy(x - oldX, y - oldY, oldX, oldY, 2946 rangeX, rangeY, 2947 mOverflingDistance, mOverflingDistance, false); 2948 2949 if (mEdgeGlowTop != null) { 2950 if (rangeY > 0 || getOverscrollMode() == OVERSCROLL_ALWAYS) { 2951 if (y < 0 && oldY >= 0) { 2952 mEdgeGlowTop.onAbsorb((int) mScroller.getCurrVelocity()); 2953 } else if (y > rangeY && oldY <= rangeY) { 2954 mEdgeGlowBottom.onAbsorb((int) mScroller.getCurrVelocity()); 2955 } 2956 } 2957 2958 if (rangeX > 0) { 2959 if (x < 0 && oldX >= 0) { 2960 mEdgeGlowLeft.onAbsorb((int) mScroller.getCurrVelocity()); 2961 } else if (x > rangeX && oldX <= rangeX) { 2962 mEdgeGlowRight.onAbsorb((int) mScroller.getCurrVelocity()); 2963 } 2964 } 2965 } 2966 } 2967 if (mScroller.isFinished()) { 2968 mPrivateHandler.sendEmptyMessage(RESUME_WEBCORE_PRIORITY); 2969 } 2970 } else { 2971 super.computeScroll(); 2972 } 2973 } 2974 2975 private static int computeDuration(int dx, int dy) { 2976 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2977 int duration = distance * 1000 / STD_SPEED; 2978 return Math.min(duration, MAX_DURATION); 2979 } 2980 2981 // helper to pin the scrollBy parameters (already in view coordinates) 2982 // returns true if the scroll was changed 2983 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2984 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2985 } 2986 // helper to pin the scrollTo parameters (already in view coordinates) 2987 // returns true if the scroll was changed 2988 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2989 x = pinLocX(x); 2990 y = pinLocY(y); 2991 int dx = x - mScrollX; 2992 int dy = y - mScrollY; 2993 2994 if ((dx | dy) == 0) { 2995 return false; 2996 } 2997 if (animate) { 2998 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2999 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3000 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3001 awakenScrollBars(mScroller.getDuration()); 3002 invalidate(); 3003 } else { 3004 abortAnimation(); // just in case 3005 scrollTo(x, y); 3006 } 3007 return true; 3008 } 3009 3010 // Scale from content to view coordinates, and pin. 3011 // Also called by jni webview.cpp 3012 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3013 if (mDrawHistory) { 3014 // disallow WebView to change the scroll position as History Picture 3015 // is used in the view system. 3016 // TODO: as we switchOutDrawHistory when trackball or navigation 3017 // keys are hit, this should be safe. Right? 3018 return false; 3019 } 3020 cx = contentToViewDimension(cx); 3021 cy = contentToViewDimension(cy); 3022 if (mHeightCanMeasure) { 3023 // move our visible rect according to scroll request 3024 if (cy != 0) { 3025 Rect tempRect = new Rect(); 3026 calcOurVisibleRect(tempRect); 3027 tempRect.offset(cx, cy); 3028 requestRectangleOnScreen(tempRect); 3029 } 3030 // FIXME: We scroll horizontally no matter what because currently 3031 // ScrollView and ListView will not scroll horizontally. 3032 // FIXME: Why do we only scroll horizontally if there is no 3033 // vertical scroll? 3034// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3035 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3036 } else { 3037 return pinScrollBy(cx, cy, animate, 0); 3038 } 3039 } 3040 3041 /** 3042 * Called by CallbackProxy when the page finishes loading. 3043 * @param url The URL of the page which has finished loading. 3044 */ 3045 /* package */ void onPageFinished(String url) { 3046 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3047 // If the user is now on a different page, or has scrolled the page 3048 // past the point where the title bar is offscreen, ignore the 3049 // scroll request. 3050 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3051 && mScrollX == 0 && mScrollY == 0) { 3052 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3053 SLIDE_TITLE_DURATION); 3054 } 3055 mPageThatNeedsToSlideTitleBarOffScreen = null; 3056 } 3057 } 3058 3059 /** 3060 * The URL of a page that sent a message to scroll the title bar off screen. 3061 * 3062 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3063 * title bar off the screen. Sometimes, the scroll position is set before 3064 * the page finishes loading. Rather than scrolling while the page is still 3065 * loading, keep track of the URL and new scroll position so we can perform 3066 * the scroll once the page finishes loading. 3067 */ 3068 private String mPageThatNeedsToSlideTitleBarOffScreen; 3069 3070 /** 3071 * The destination Y scroll position to be used when the page finishes 3072 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3073 */ 3074 private int mYDistanceToSlideTitleOffScreen; 3075 3076 // scale from content to view coordinates, and pin 3077 // return true if pin caused the final x/y different than the request cx/cy, 3078 // and a future scroll may reach the request cx/cy after our size has 3079 // changed 3080 // return false if the view scroll to the exact position as it is requested, 3081 // where negative numbers are taken to mean 0 3082 private boolean setContentScrollTo(int cx, int cy) { 3083 if (mDrawHistory) { 3084 // disallow WebView to change the scroll position as History Picture 3085 // is used in the view system. 3086 // One known case where this is called is that WebCore tries to 3087 // restore the scroll position. As history Picture already uses the 3088 // saved scroll position, it is ok to skip this. 3089 return false; 3090 } 3091 int vx; 3092 int vy; 3093 if ((cx | cy) == 0) { 3094 // If the page is being scrolled to (0,0), do not add in the title 3095 // bar's height, and simply scroll to (0,0). (The only other work 3096 // in contentToView_ is to multiply, so this would not change 0.) 3097 vx = 0; 3098 vy = 0; 3099 } else { 3100 vx = contentToViewX(cx); 3101 vy = contentToViewY(cy); 3102 } 3103// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3104// vx + " " + vy + "]"); 3105 // Some mobile sites attempt to scroll the title bar off the page by 3106 // scrolling to (0,1). If we are at the top left corner of the 3107 // page, assume this is an attempt to scroll off the title bar, and 3108 // animate the title bar off screen slowly enough that the user can see 3109 // it. 3110 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3111 && mTitleBar != null) { 3112 // FIXME: 100 should be defined somewhere as our max progress. 3113 if (getProgress() < 100) { 3114 // Wait to scroll the title bar off screen until the page has 3115 // finished loading. Keep track of the URL and the destination 3116 // Y position 3117 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3118 mYDistanceToSlideTitleOffScreen = vy; 3119 } else { 3120 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3121 } 3122 // Since we are animating, we have not yet reached the desired 3123 // scroll position. Do not return true to request another attempt 3124 return false; 3125 } 3126 pinScrollTo(vx, vy, false, 0); 3127 // If the request was to scroll to a negative coordinate, treat it as if 3128 // it was a request to scroll to 0 3129 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3130 return true; 3131 } else { 3132 return false; 3133 } 3134 } 3135 3136 // scale from content to view coordinates, and pin 3137 private void spawnContentScrollTo(int cx, int cy) { 3138 if (mDrawHistory) { 3139 // disallow WebView to change the scroll position as History Picture 3140 // is used in the view system. 3141 return; 3142 } 3143 int vx = contentToViewX(cx); 3144 int vy = contentToViewY(cy); 3145 pinScrollTo(vx, vy, true, 0); 3146 } 3147 3148 /** 3149 * These are from webkit, and are in content coordinate system (unzoomed) 3150 */ 3151 private void contentSizeChanged(boolean updateLayout) { 3152 // suppress 0,0 since we usually see real dimensions soon after 3153 // this avoids drawing the prev content in a funny place. If we find a 3154 // way to consolidate these notifications, this check may become 3155 // obsolete 3156 if ((mContentWidth | mContentHeight) == 0) { 3157 return; 3158 } 3159 3160 if (mHeightCanMeasure) { 3161 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3162 || updateLayout) { 3163 requestLayout(); 3164 } 3165 } else if (mWidthCanMeasure) { 3166 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3167 || updateLayout) { 3168 requestLayout(); 3169 } 3170 } else { 3171 // If we don't request a layout, try to send our view size to the 3172 // native side to ensure that WebCore has the correct dimensions. 3173 sendViewSizeZoom(); 3174 } 3175 } 3176 3177 /** 3178 * Set the WebViewClient that will receive various notifications and 3179 * requests. This will replace the current handler. 3180 * @param client An implementation of WebViewClient. 3181 */ 3182 public void setWebViewClient(WebViewClient client) { 3183 mCallbackProxy.setWebViewClient(client); 3184 } 3185 3186 /** 3187 * Gets the WebViewClient 3188 * @return the current WebViewClient instance. 3189 * 3190 *@hide pending API council approval. 3191 */ 3192 public WebViewClient getWebViewClient() { 3193 return mCallbackProxy.getWebViewClient(); 3194 } 3195 3196 /** 3197 * Register the interface to be used when content can not be handled by 3198 * the rendering engine, and should be downloaded instead. This will replace 3199 * the current handler. 3200 * @param listener An implementation of DownloadListener. 3201 */ 3202 public void setDownloadListener(DownloadListener listener) { 3203 mCallbackProxy.setDownloadListener(listener); 3204 } 3205 3206 /** 3207 * Set the chrome handler. This is an implementation of WebChromeClient for 3208 * use in handling Javascript dialogs, favicons, titles, and the progress. 3209 * This will replace the current handler. 3210 * @param client An implementation of WebChromeClient. 3211 */ 3212 public void setWebChromeClient(WebChromeClient client) { 3213 mCallbackProxy.setWebChromeClient(client); 3214 } 3215 3216 /** 3217 * Gets the chrome handler. 3218 * @return the current WebChromeClient instance. 3219 * 3220 * @hide API council approval. 3221 */ 3222 public WebChromeClient getWebChromeClient() { 3223 return mCallbackProxy.getWebChromeClient(); 3224 } 3225 3226 /** 3227 * Set the back/forward list client. This is an implementation of 3228 * WebBackForwardListClient for handling new items and changes in the 3229 * history index. 3230 * @param client An implementation of WebBackForwardListClient. 3231 * {@hide} 3232 */ 3233 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3234 mCallbackProxy.setWebBackForwardListClient(client); 3235 } 3236 3237 /** 3238 * Gets the WebBackForwardListClient. 3239 * {@hide} 3240 */ 3241 public WebBackForwardListClient getWebBackForwardListClient() { 3242 return mCallbackProxy.getWebBackForwardListClient(); 3243 } 3244 3245 /** 3246 * Set the Picture listener. This is an interface used to receive 3247 * notifications of a new Picture. 3248 * @param listener An implementation of WebView.PictureListener. 3249 */ 3250 public void setPictureListener(PictureListener listener) { 3251 mPictureListener = listener; 3252 } 3253 3254 /** 3255 * {@hide} 3256 */ 3257 /* FIXME: Debug only! Remove for SDK! */ 3258 public void externalRepresentation(Message callback) { 3259 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3260 } 3261 3262 /** 3263 * {@hide} 3264 */ 3265 /* FIXME: Debug only! Remove for SDK! */ 3266 public void documentAsText(Message callback) { 3267 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3268 } 3269 3270 /** 3271 * Use this function to bind an object to Javascript so that the 3272 * methods can be accessed from Javascript. 3273 * <p><strong>IMPORTANT:</strong> 3274 * <ul> 3275 * <li> Using addJavascriptInterface() allows JavaScript to control your 3276 * application. This can be a very useful feature or a dangerous security 3277 * issue. When the HTML in the WebView is untrustworthy (for example, part 3278 * or all of the HTML is provided by some person or process), then an 3279 * attacker could inject HTML that will execute your code and possibly any 3280 * code of the attacker's choosing.<br> 3281 * Do not use addJavascriptInterface() unless all of the HTML in this 3282 * WebView was written by you.</li> 3283 * <li> The Java object that is bound runs in another thread and not in 3284 * the thread that it was constructed in.</li> 3285 * </ul></p> 3286 * @param obj The class instance to bind to Javascript 3287 * @param interfaceName The name to used to expose the class in Javascript 3288 */ 3289 public void addJavascriptInterface(Object obj, String interfaceName) { 3290 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3291 arg.mObject = obj; 3292 arg.mInterfaceName = interfaceName; 3293 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3294 } 3295 3296 /** 3297 * Return the WebSettings object used to control the settings for this 3298 * WebView. 3299 * @return A WebSettings object that can be used to control this WebView's 3300 * settings. 3301 */ 3302 public WebSettings getSettings() { 3303 return mWebViewCore.getSettings(); 3304 } 3305 3306 /** 3307 * Use this method to inform the webview about packages that are installed 3308 * in the system. This information will be used by the 3309 * navigator.isApplicationInstalled() API. 3310 * @param packageNames is a set of package names that are known to be 3311 * installed in the system. 3312 * 3313 * @hide not a public API 3314 */ 3315 public void addPackageNames(Set<String> packageNames) { 3316 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 3317 } 3318 3319 /** 3320 * Use this method to inform the webview about single packages that are 3321 * installed in the system. This information will be used by the 3322 * navigator.isApplicationInstalled() API. 3323 * @param packageName is the name of a package that is known to be 3324 * installed in the system. 3325 * 3326 * @hide not a public API 3327 */ 3328 public void addPackageName(String packageName) { 3329 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3330 } 3331 3332 /** 3333 * Use this method to inform the webview about packages that are uninstalled 3334 * in the system. This information will be used by the 3335 * navigator.isApplicationInstalled() API. 3336 * @param packageName is the name of a package that has been uninstalled in 3337 * the system. 3338 * 3339 * @hide not a public API 3340 */ 3341 public void removePackageName(String packageName) { 3342 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3343 } 3344 3345 /** 3346 * Return the list of currently loaded plugins. 3347 * @return The list of currently loaded plugins. 3348 * 3349 * @deprecated This was used for Gears, which has been deprecated. 3350 */ 3351 @Deprecated 3352 public static synchronized PluginList getPluginList() { 3353 return new PluginList(); 3354 } 3355 3356 /** 3357 * @deprecated This was used for Gears, which has been deprecated. 3358 */ 3359 @Deprecated 3360 public void refreshPlugins(boolean reloadOpenPages) { } 3361 3362 //------------------------------------------------------------------------- 3363 // Override View methods 3364 //------------------------------------------------------------------------- 3365 3366 @Override 3367 protected void finalize() throws Throwable { 3368 try { 3369 destroy(); 3370 } finally { 3371 super.finalize(); 3372 } 3373 } 3374 3375 @Override 3376 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3377 if (child == mTitleBar) { 3378 // When drawing the title bar, move it horizontally to always show 3379 // at the top of the WebView. 3380 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3381 } 3382 return super.drawChild(canvas, child, drawingTime); 3383 } 3384 3385 private void drawContent(Canvas canvas) { 3386 // Update the buttons in the picture, so when we draw the picture 3387 // to the screen, they are in the correct state. 3388 // Tell the native side if user is a) touching the screen, 3389 // b) pressing the trackball down, or c) pressing the enter key 3390 // If the cursor is on a button, we need to draw it in the pressed 3391 // state. 3392 // If mNativeClass is 0, we should not reach here, so we do not 3393 // need to check it again. 3394 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3395 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3396 || mTrackballDown || mGotCenterDown, false); 3397 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3398 } 3399 3400 @Override 3401 protected void onDraw(Canvas canvas) { 3402 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3403 if (mNativeClass == 0) { 3404 return; 3405 } 3406 3407 // if both mContentWidth and mContentHeight are 0, it means there is no 3408 // valid Picture passed to WebView yet. This can happen when WebView 3409 // just starts. Draw the background and return. 3410 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3411 canvas.drawColor(mBackgroundColor); 3412 return; 3413 } 3414 3415 int saveCount = canvas.save(); 3416 if (mInOverScrollMode && !getSettings() 3417 .getUseWebViewBackgroundForOverscrollBackground()) { 3418 if (mOverScrollBackground == null) { 3419 mOverScrollBackground = new Paint(); 3420 Bitmap bm = BitmapFactory.decodeResource( 3421 mContext.getResources(), 3422 com.android.internal.R.drawable.status_bar_background); 3423 mOverScrollBackground.setShader(new BitmapShader(bm, 3424 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3425 mOverScrollBorder = new Paint(); 3426 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3427 mOverScrollBorder.setStrokeWidth(0); 3428 mOverScrollBorder.setColor(0xffbbbbbb); 3429 } 3430 3431 int top = 0; 3432 int right = computeRealHorizontalScrollRange(); 3433 int bottom = top + computeRealVerticalScrollRange(); 3434 // first draw the background and anchor to the top of the view 3435 canvas.save(); 3436 canvas.translate(mScrollX, mScrollY); 3437 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3438 - mScrollY, Region.Op.DIFFERENCE); 3439 canvas.drawPaint(mOverScrollBackground); 3440 canvas.restore(); 3441 // then draw the border 3442 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3443 // next clip the region for the content 3444 canvas.clipRect(0, top, right, bottom); 3445 } 3446 if (mTitleBar != null) { 3447 canvas.translate(0, (int) mTitleBar.getHeight()); 3448 } 3449 if (mDragTrackerHandler == null) { 3450 drawContent(canvas); 3451 } else { 3452 if (!mDragTrackerHandler.draw(canvas)) { 3453 // sometimes the tracker doesn't draw, even though its active 3454 drawContent(canvas); 3455 } 3456 if (mDragTrackerHandler.isFinished()) { 3457 mDragTrackerHandler = null; 3458 } 3459 } 3460 canvas.restoreToCount(saveCount); 3461 3462 // Now draw the shadow. 3463 int titleH = getVisibleTitleHeight(); 3464 if (mTitleBar != null && titleH == 0) { 3465 int height = (int) (5f * getContext().getResources() 3466 .getDisplayMetrics().density); 3467 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3468 mScrollY + height); 3469 mTitleShadow.draw(canvas); 3470 } 3471 3472 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3473 invalidate(); 3474 } 3475 mWebViewCore.signalRepaintDone(); 3476 } 3477 3478 @Override 3479 public void draw(Canvas canvas) { 3480 super.draw(canvas); 3481 if (mEdgeGlowTop != null && drawEdgeGlows(canvas)) { 3482 invalidate(); 3483 } 3484 } 3485 3486 /** 3487 * Draw the glow effect along the sides of the widget. mEdgeGlow* must be non-null. 3488 * 3489 * @param canvas Canvas to draw into, transformed into view coordinates. 3490 * @return true if glow effects are still animating and the view should invalidate again. 3491 */ 3492 private boolean drawEdgeGlows(Canvas canvas) { 3493 final int scrollX = mScrollX; 3494 final int scrollY = mScrollY; 3495 final int width = getWidth(); 3496 int height = getHeight(); 3497 3498 boolean invalidateForGlow = false; 3499 if (!mEdgeGlowTop.isFinished()) { 3500 final int restoreCount = canvas.save(); 3501 3502 canvas.translate(-width / 2 + scrollX, Math.min(0, scrollY)); 3503 mEdgeGlowTop.setSize(width * 2, height); 3504 invalidateForGlow |= mEdgeGlowTop.draw(canvas); 3505 canvas.restoreToCount(restoreCount); 3506 } 3507 if (!mEdgeGlowBottom.isFinished()) { 3508 final int restoreCount = canvas.save(); 3509 3510 canvas.translate(-width / 2 + scrollX, Math.max(computeMaxScrollY(), scrollY) + height); 3511 canvas.rotate(180, width, 0); 3512 mEdgeGlowBottom.setSize(width * 2, height); 3513 invalidateForGlow |= mEdgeGlowBottom.draw(canvas); 3514 canvas.restoreToCount(restoreCount); 3515 } 3516 if (!mEdgeGlowLeft.isFinished()) { 3517 final int restoreCount = canvas.save(); 3518 3519 canvas.rotate(270); 3520 canvas.translate(-height * 1.5f - scrollY, Math.min(0, scrollX)); 3521 mEdgeGlowLeft.setSize(height * 2, width); 3522 invalidateForGlow |= mEdgeGlowLeft.draw(canvas); 3523 canvas.restoreToCount(restoreCount); 3524 } 3525 if (!mEdgeGlowRight.isFinished()) { 3526 final int restoreCount = canvas.save(); 3527 3528 canvas.rotate(90); 3529 canvas.translate(-height / 2 + scrollY, 3530 -(Math.max(computeMaxScrollX(), scrollX) + width)); 3531 mEdgeGlowRight.setSize(height * 2, width); 3532 invalidateForGlow |= mEdgeGlowRight.draw(canvas); 3533 canvas.restoreToCount(restoreCount); 3534 } 3535 return invalidateForGlow; 3536 } 3537 3538 @Override 3539 public void setLayoutParams(ViewGroup.LayoutParams params) { 3540 if (params.height == LayoutParams.WRAP_CONTENT) { 3541 mWrapContent = true; 3542 } 3543 super.setLayoutParams(params); 3544 } 3545 3546 @Override 3547 public boolean performLongClick() { 3548 // performLongClick() is the result of a delayed message. If we switch 3549 // to windows overview, the WebView will be temporarily removed from the 3550 // view system. In that case, do nothing. 3551 if (getParent() == null) return false; 3552 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3553 // Send the click so that the textfield is in focus 3554 centerKeyPressOnTextField(); 3555 rebuildWebTextView(); 3556 } else { 3557 clearTextEntry(true); 3558 } 3559 if (inEditingMode()) { 3560 return mWebTextView.performLongClick(); 3561 } 3562 /* if long click brings up a context menu, the super function 3563 * returns true and we're done. Otherwise, nothing happened when 3564 * the user clicked. */ 3565 if (super.performLongClick()) { 3566 return true; 3567 } 3568 /* In the case where the application hasn't already handled the long 3569 * click action, look for a word under the click. If one is found, 3570 * animate the text selection into view. 3571 * FIXME: no animation code yet */ 3572 if (mSelectingText) return false; // long click does nothing on selection 3573 int x = viewToContentX((int) mLastTouchX + mScrollX); 3574 int y = viewToContentY((int) mLastTouchY + mScrollY); 3575 setUpSelect(); 3576 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3577 nativeSetExtendSelection(); 3578 WebChromeClient client = getWebChromeClient(); 3579 if (client != null) client.onSelectionStart(this); 3580 return true; 3581 } 3582 notifySelectDialogDismissed(); 3583 return false; 3584 } 3585 3586 boolean inAnimateZoom() { 3587 return mZoomScale != 0; 3588 } 3589 3590 /** 3591 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3592 * has changed. This is especially important for password fields, which are 3593 * drawn by the WebTextView, since it conveys more information than what 3594 * webkit draws. Thus we need to reposition it to show in the correct 3595 * place. 3596 */ 3597 private boolean mNeedToAdjustWebTextView; 3598 3599 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3600 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3601 Rect vBox = contentToViewRect(contentBounds); 3602 Rect visibleRect = new Rect(); 3603 calcOurVisibleRect(visibleRect); 3604 // If the textfield is on screen, place the WebTextView in 3605 // its new place, accounting for our new scroll/zoom values, 3606 // and adjust its textsize. 3607 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3608 : visibleRect.contains(vBox)) { 3609 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3610 vBox.height()); 3611 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3612 contentToViewDimension( 3613 nativeFocusCandidateTextSize())); 3614 return true; 3615 } else { 3616 // The textfield is now off screen. The user probably 3617 // was not zooming to see the textfield better. Remove 3618 // the WebTextView. If the user types a key, and the 3619 // textfield is still in focus, we will reconstruct 3620 // the WebTextView and scroll it back on screen. 3621 mWebTextView.remove(); 3622 return false; 3623 } 3624 } 3625 3626 private void drawExtras(Canvas canvas, int extras, boolean animationsRunning) { 3627 // If mNativeClass is 0, we should not reach here, so we do not 3628 // need to check it again. 3629 if (animationsRunning) { 3630 canvas.setDrawFilter(mWebViewCore.mZoomFilter); 3631 } 3632 nativeDrawExtras(canvas, extras); 3633 canvas.setDrawFilter(null); 3634 } 3635 3636 private void drawCoreAndCursorRing(Canvas canvas, int color, 3637 boolean drawCursorRing) { 3638 if (mDrawHistory) { 3639 canvas.scale(mActualScale, mActualScale); 3640 canvas.drawPicture(mHistoryPicture); 3641 return; 3642 } 3643 3644 boolean animateZoom = mZoomScale != 0; 3645 boolean animateScroll = ((!mScroller.isFinished() 3646 || mVelocityTracker != null) 3647 && (mTouchMode != TOUCH_DRAG_MODE || 3648 mHeldMotionless != MOTIONLESS_TRUE)) 3649 || mDeferTouchMode == TOUCH_DRAG_MODE; 3650 if (mTouchMode == TOUCH_DRAG_MODE) { 3651 if (mHeldMotionless == MOTIONLESS_PENDING) { 3652 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3653 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3654 mHeldMotionless = MOTIONLESS_FALSE; 3655 } 3656 if (mHeldMotionless == MOTIONLESS_FALSE) { 3657 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3658 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3659 mHeldMotionless = MOTIONLESS_PENDING; 3660 } 3661 } 3662 if (animateZoom) { 3663 float zoomScale; 3664 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3665 if (interval < ZOOM_ANIMATION_LENGTH) { 3666 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3667 zoomScale = 1.0f / (mInvInitialZoomScale 3668 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3669 invalidate(); 3670 } else { 3671 zoomScale = mZoomScale; 3672 // set mZoomScale to be 0 as we have done animation 3673 mZoomScale = 0; 3674 WebViewCore.resumeUpdatePicture(mWebViewCore); 3675 // call invalidate() again to draw with the final filters 3676 invalidate(); 3677 if (mNeedToAdjustWebTextView) { 3678 mNeedToAdjustWebTextView = false; 3679 if (didUpdateTextViewBounds(false) 3680 && nativeFocusCandidateIsPassword()) { 3681 // If it is a password field, start drawing the 3682 // WebTextView once again. 3683 mWebTextView.setInPassword(true); 3684 } 3685 } 3686 } 3687 // calculate the intermediate scroll position. As we need to use 3688 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3689 float scale = zoomScale * mInvInitialZoomScale; 3690 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3691 - mZoomCenterX); 3692 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3693 * zoomScale)) + mScrollX; 3694 int titleHeight = getTitleHeight(); 3695 int ty = Math.round(scale 3696 * (mInitialScrollY + mZoomCenterY - titleHeight) 3697 - (mZoomCenterY - titleHeight)); 3698 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3699 - titleHeight, getViewHeight(), Math.round(mContentHeight 3700 * zoomScale)) + titleHeight) + mScrollY; 3701 canvas.translate(tx, ty); 3702 canvas.scale(zoomScale, zoomScale); 3703 if (inEditingMode() && !mNeedToAdjustWebTextView 3704 && mZoomScale != 0) { 3705 // The WebTextView is up. Keep track of this so we can adjust 3706 // its size and placement when we finish zooming 3707 mNeedToAdjustWebTextView = true; 3708 // If it is in password mode, turn it off so it does not draw 3709 // misplaced. 3710 if (nativeFocusCandidateIsPassword()) { 3711 mWebTextView.setInPassword(false); 3712 } 3713 } 3714 } else { 3715 canvas.scale(mActualScale, mActualScale); 3716 } 3717 3718 boolean UIAnimationsRunning = false; 3719 // Currently for each draw we compute the animation values; 3720 // We may in the future decide to do that independently. 3721 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3722 UIAnimationsRunning = true; 3723 // If we have unfinished (or unstarted) animations, 3724 // we ask for a repaint. 3725 invalidate(); 3726 } 3727 mWebViewCore.drawContentPicture(canvas, color, 3728 (animateZoom || mPreviewZoomOnly || UIAnimationsRunning), 3729 animateScroll); 3730 if (mNativeClass == 0) return; 3731 // decide which adornments to draw 3732 int extras = DRAW_EXTRAS_NONE; 3733 if (mFindIsUp) { 3734 extras = DRAW_EXTRAS_FIND; 3735 } else if (mSelectingText) { 3736 extras = DRAW_EXTRAS_SELECTION; 3737 nativeSetSelectionPointer(mDrawSelectionPointer, 3738 mInvActualScale, 3739 mSelectX, mSelectY - getTitleHeight()); 3740 } else if (drawCursorRing) { 3741 extras = DRAW_EXTRAS_CURSOR_RING; 3742 } 3743 drawExtras(canvas, extras, UIAnimationsRunning); 3744 3745 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3746 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3747 mTouchMode = TOUCH_SHORTPRESS_MODE; 3748 } 3749 } 3750 if (mFocusSizeChanged) { 3751 mFocusSizeChanged = false; 3752 // If we are zooming, this will get handled above, when the zoom 3753 // finishes. We also do not need to do this unless the WebTextView 3754 // is showing. 3755 if (!animateZoom && inEditingMode()) { 3756 didUpdateTextViewBounds(true); 3757 } 3758 } 3759 } 3760 3761 // draw history 3762 private boolean mDrawHistory = false; 3763 private Picture mHistoryPicture = null; 3764 private int mHistoryWidth = 0; 3765 private int mHistoryHeight = 0; 3766 3767 // Only check the flag, can be called from WebCore thread 3768 boolean drawHistory() { 3769 return mDrawHistory; 3770 } 3771 3772 // Should only be called in UI thread 3773 void switchOutDrawHistory() { 3774 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3775 if (mDrawHistory && mWebViewCore.pictureReady()) { 3776 mDrawHistory = false; 3777 mHistoryPicture = null; 3778 invalidate(); 3779 int oldScrollX = mScrollX; 3780 int oldScrollY = mScrollY; 3781 mScrollX = pinLocX(mScrollX); 3782 mScrollY = pinLocY(mScrollY); 3783 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3784 mUserScroll = false; 3785 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3786 oldScrollY); 3787 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3788 } else { 3789 sendOurVisibleRect(); 3790 } 3791 } 3792 } 3793 3794 WebViewCore.CursorData cursorData() { 3795 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3796 result.mMoveGeneration = nativeMoveGeneration(); 3797 result.mFrame = nativeCursorFramePointer(); 3798 Point position = nativeCursorPosition(); 3799 result.mX = position.x; 3800 result.mY = position.y; 3801 return result; 3802 } 3803 3804 /** 3805 * Delete text from start to end in the focused textfield. If there is no 3806 * focus, or if start == end, silently fail. If start and end are out of 3807 * order, swap them. 3808 * @param start Beginning of selection to delete. 3809 * @param end End of selection to delete. 3810 */ 3811 /* package */ void deleteSelection(int start, int end) { 3812 mTextGeneration++; 3813 WebViewCore.TextSelectionData data 3814 = new WebViewCore.TextSelectionData(start, end); 3815 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3816 data); 3817 } 3818 3819 /** 3820 * Set the selection to (start, end) in the focused textfield. If start and 3821 * end are out of order, swap them. 3822 * @param start Beginning of selection. 3823 * @param end End of selection. 3824 */ 3825 /* package */ void setSelection(int start, int end) { 3826 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3827 } 3828 3829 @Override 3830 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3831 InputConnection connection = super.onCreateInputConnection(outAttrs); 3832 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3833 return connection; 3834 } 3835 3836 /** 3837 * Called in response to a message from webkit telling us that the soft 3838 * keyboard should be launched. 3839 */ 3840 private void displaySoftKeyboard(boolean isTextView) { 3841 InputMethodManager imm = (InputMethodManager) 3842 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3843 3844 // bring it back to the default scale so that user can enter text 3845 boolean zoom = mActualScale < mDefaultScale; 3846 if (zoom) { 3847 mInZoomOverview = false; 3848 mZoomCenterX = mLastTouchX; 3849 mZoomCenterY = mLastTouchY; 3850 // do not change text wrap scale so that there is no reflow 3851 setNewZoomScale(mDefaultScale, false, false); 3852 } 3853 if (isTextView) { 3854 rebuildWebTextView(); 3855 if (inEditingMode()) { 3856 imm.showSoftInput(mWebTextView, 0); 3857 if (zoom) { 3858 didUpdateTextViewBounds(true); 3859 } 3860 return; 3861 } 3862 } 3863 // Used by plugins. 3864 // Also used if the navigation cache is out of date, and 3865 // does not recognize that a textfield is in focus. In that 3866 // case, use WebView as the targeted view. 3867 // see http://b/issue?id=2457459 3868 imm.showSoftInput(this, 0); 3869 } 3870 3871 // Called by WebKit to instruct the UI to hide the keyboard 3872 private void hideSoftKeyboard() { 3873 InputMethodManager imm = (InputMethodManager) 3874 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3875 3876 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3877 } 3878 3879 /* 3880 * This method checks the current focus and cursor and potentially rebuilds 3881 * mWebTextView to have the appropriate properties, such as password, 3882 * multiline, and what text it contains. It also removes it if necessary. 3883 */ 3884 /* package */ void rebuildWebTextView() { 3885 // If the WebView does not have focus, do nothing until it gains focus. 3886 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3887 return; 3888 } 3889 boolean alreadyThere = inEditingMode(); 3890 // inEditingMode can only return true if mWebTextView is non-null, 3891 // so we can safely call remove() if (alreadyThere) 3892 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3893 if (alreadyThere) { 3894 mWebTextView.remove(); 3895 } 3896 return; 3897 } 3898 // At this point, we know we have found an input field, so go ahead 3899 // and create the WebTextView if necessary. 3900 if (mWebTextView == null) { 3901 mWebTextView = new WebTextView(mContext, WebView.this); 3902 // Initialize our generation number. 3903 mTextGeneration = 0; 3904 } 3905 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3906 contentToViewDimension(nativeFocusCandidateTextSize())); 3907 Rect visibleRect = new Rect(); 3908 calcOurContentVisibleRect(visibleRect); 3909 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3910 // should be in content coordinates. 3911 Rect bounds = nativeFocusCandidateNodeBounds(); 3912 Rect vBox = contentToViewRect(bounds); 3913 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3914 if (!Rect.intersects(bounds, visibleRect)) { 3915 mWebTextView.bringIntoView(); 3916 } 3917 String text = nativeFocusCandidateText(); 3918 int nodePointer = nativeFocusCandidatePointer(); 3919 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3920 // It is possible that we have the same textfield, but it has moved, 3921 // i.e. In the case of opening/closing the screen. 3922 // In that case, we need to set the dimensions, but not the other 3923 // aspects. 3924 // If the text has been changed by webkit, update it. However, if 3925 // there has been more UI text input, ignore it. We will receive 3926 // another update when that text is recognized. 3927 if (text != null && !text.equals(mWebTextView.getText().toString()) 3928 && nativeTextGeneration() == mTextGeneration) { 3929 mWebTextView.setTextAndKeepSelection(text); 3930 } 3931 } else { 3932 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3933 Gravity.RIGHT : Gravity.NO_GRAVITY); 3934 // This needs to be called before setType, which may call 3935 // requestFormData, and it needs to have the correct nodePointer. 3936 mWebTextView.setNodePointer(nodePointer); 3937 mWebTextView.setType(nativeFocusCandidateType()); 3938 if (null == text) { 3939 if (DebugFlags.WEB_VIEW) { 3940 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3941 } 3942 text = ""; 3943 } 3944 mWebTextView.setTextAndKeepSelection(text); 3945 InputMethodManager imm = InputMethodManager.peekInstance(); 3946 if (imm != null && imm.isActive(mWebTextView)) { 3947 imm.restartInput(mWebTextView); 3948 } 3949 } 3950 mWebTextView.requestFocus(); 3951 } 3952 3953 /** 3954 * Called by WebTextView to find saved form data associated with the 3955 * textfield 3956 * @param name Name of the textfield. 3957 * @param nodePointer Pointer to the node of the textfield, so it can be 3958 * compared to the currently focused textfield when the data is 3959 * retrieved. 3960 */ 3961 /* package */ void requestFormData(String name, int nodePointer) { 3962 if (mWebViewCore.getSettings().getSaveFormData()) { 3963 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3964 update.arg1 = nodePointer; 3965 RequestFormData updater = new RequestFormData(name, getUrl(), 3966 update); 3967 Thread t = new Thread(updater); 3968 t.start(); 3969 } 3970 } 3971 3972 /** 3973 * Pass a message to find out the <label> associated with the <input> 3974 * identified by nodePointer 3975 * @param framePointer Pointer to the frame containing the <input> node 3976 * @param nodePointer Pointer to the node for which a <label> is desired. 3977 */ 3978 /* package */ void requestLabel(int framePointer, int nodePointer) { 3979 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3980 nodePointer); 3981 } 3982 3983 /* 3984 * This class requests an Adapter for the WebTextView which shows past 3985 * entries stored in the database. It is a Runnable so that it can be done 3986 * in its own thread, without slowing down the UI. 3987 */ 3988 private class RequestFormData implements Runnable { 3989 private String mName; 3990 private String mUrl; 3991 private Message mUpdateMessage; 3992 3993 public RequestFormData(String name, String url, Message msg) { 3994 mName = name; 3995 mUrl = url; 3996 mUpdateMessage = msg; 3997 } 3998 3999 public void run() { 4000 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 4001 if (pastEntries.size() > 0) { 4002 AutoCompleteAdapter adapter = new 4003 AutoCompleteAdapter(mContext, pastEntries); 4004 mUpdateMessage.obj = adapter; 4005 mUpdateMessage.sendToTarget(); 4006 } 4007 } 4008 } 4009 4010 /** 4011 * Dump the display tree to "/sdcard/displayTree.txt" 4012 * 4013 * @hide debug only 4014 */ 4015 public void dumpDisplayTree() { 4016 nativeDumpDisplayTree(getUrl()); 4017 } 4018 4019 /** 4020 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4021 * "/sdcard/domTree.txt" 4022 * 4023 * @hide debug only 4024 */ 4025 public void dumpDomTree(boolean toFile) { 4026 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4027 } 4028 4029 /** 4030 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4031 * to "/sdcard/renderTree.txt" 4032 * 4033 * @hide debug only 4034 */ 4035 public void dumpRenderTree(boolean toFile) { 4036 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4037 } 4038 4039 /** 4040 * Dump the V8 counters to standard output. 4041 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4042 * true. Otherwise, this will do nothing. 4043 * 4044 * @hide debug only 4045 */ 4046 public void dumpV8Counters() { 4047 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4048 } 4049 4050 // This is used to determine long press with the center key. Does not 4051 // affect long press with the trackball/touch. 4052 private boolean mGotCenterDown = false; 4053 4054 @Override 4055 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4056 // send complex characters to webkit for use by JS and plugins 4057 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4058 // pass the key to DOM 4059 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4060 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4061 // return true as DOM handles the key 4062 return true; 4063 } 4064 return false; 4065 } 4066 4067 @Override 4068 public boolean onKeyDown(int keyCode, KeyEvent event) { 4069 if (DebugFlags.WEB_VIEW) { 4070 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4071 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4072 } 4073 4074 if (mNativeClass == 0) { 4075 return false; 4076 } 4077 4078 // do this hack up front, so it always works, regardless of touch-mode 4079 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4080 mAutoRedraw = !mAutoRedraw; 4081 if (mAutoRedraw) { 4082 invalidate(); 4083 } 4084 return true; 4085 } 4086 4087 // Bubble up the key event if 4088 // 1. it is a system key; or 4089 // 2. the host application wants to handle it; 4090 if (event.isSystem() 4091 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4092 return false; 4093 } 4094 4095 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4096 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4097 if (nativeFocusIsPlugin()) { 4098 mShiftIsPressed = true; 4099 } else if (!nativeCursorWantsKeyEvents() && !mSelectingText) { 4100 setUpSelect(); 4101 } 4102 } 4103 4104 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4105 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4106 switchOutDrawHistory(); 4107 if (nativeFocusIsPlugin()) { 4108 letPluginHandleNavKey(keyCode, event.getEventTime(), true); 4109 return true; 4110 } 4111 if (mSelectingText) { 4112 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4113 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4114 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4115 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4116 int multiplier = event.getRepeatCount() + 1; 4117 moveSelection(xRate * multiplier, yRate * multiplier); 4118 return true; 4119 } 4120 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4121 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4122 return true; 4123 } 4124 // Bubble up the key event as WebView doesn't handle it 4125 return false; 4126 } 4127 4128 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4129 switchOutDrawHistory(); 4130 if (event.getRepeatCount() == 0) { 4131 if (mSelectingText) { 4132 return true; // discard press if copy in progress 4133 } 4134 mGotCenterDown = true; 4135 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4136 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4137 // Already checked mNativeClass, so we do not need to check it 4138 // again. 4139 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4140 return true; 4141 } 4142 // Bubble up the key event as WebView doesn't handle it 4143 return false; 4144 } 4145 4146 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 4147 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 4148 // turn off copy select if a shift-key combo is pressed 4149 selectionDone(); 4150 mShiftIsPressed = false; 4151 } 4152 4153 if (getSettings().getNavDump()) { 4154 switch (keyCode) { 4155 case KeyEvent.KEYCODE_4: 4156 dumpDisplayTree(); 4157 break; 4158 case KeyEvent.KEYCODE_5: 4159 case KeyEvent.KEYCODE_6: 4160 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4161 break; 4162 case KeyEvent.KEYCODE_7: 4163 case KeyEvent.KEYCODE_8: 4164 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4165 break; 4166 case KeyEvent.KEYCODE_9: 4167 nativeInstrumentReport(); 4168 return true; 4169 } 4170 } 4171 4172 if (nativeCursorIsTextInput()) { 4173 // This message will put the node in focus, for the DOM's notion 4174 // of focus, and make the focuscontroller active 4175 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 4176 nativeCursorNodePointer()); 4177 // This will bring up the WebTextView and put it in focus, for 4178 // our view system's notion of focus 4179 rebuildWebTextView(); 4180 // Now we need to pass the event to it 4181 if (inEditingMode()) { 4182 mWebTextView.setDefaultSelection(); 4183 return mWebTextView.dispatchKeyEvent(event); 4184 } 4185 } else if (nativeHasFocusNode()) { 4186 // In this case, the cursor is not on a text input, but the focus 4187 // might be. Check it, and if so, hand over to the WebTextView. 4188 rebuildWebTextView(); 4189 if (inEditingMode()) { 4190 mWebTextView.setDefaultSelection(); 4191 return mWebTextView.dispatchKeyEvent(event); 4192 } 4193 } 4194 4195 // TODO: should we pass all the keys to DOM or check the meta tag 4196 if (nativeCursorWantsKeyEvents() || true) { 4197 // pass the key to DOM 4198 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4199 // return true as DOM handles the key 4200 return true; 4201 } 4202 4203 // Bubble up the key event as WebView doesn't handle it 4204 return false; 4205 } 4206 4207 @Override 4208 public boolean onKeyUp(int keyCode, KeyEvent event) { 4209 if (DebugFlags.WEB_VIEW) { 4210 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4211 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4212 } 4213 4214 if (mNativeClass == 0) { 4215 return false; 4216 } 4217 4218 // special CALL handling when cursor node's href is "tel:XXX" 4219 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4220 String text = nativeCursorText(); 4221 if (!nativeCursorIsTextInput() && text != null 4222 && text.startsWith(SCHEME_TEL)) { 4223 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4224 getContext().startActivity(intent); 4225 return true; 4226 } 4227 } 4228 4229 // Bubble up the key event if 4230 // 1. it is a system key; or 4231 // 2. the host application wants to handle it; 4232 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 4233 return false; 4234 } 4235 4236 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4237 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4238 if (nativeFocusIsPlugin()) { 4239 mShiftIsPressed = false; 4240 } else if (copySelection()) { 4241 selectionDone(); 4242 return true; 4243 } 4244 } 4245 4246 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4247 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4248 if (nativeFocusIsPlugin()) { 4249 letPluginHandleNavKey(keyCode, event.getEventTime(), false); 4250 return true; 4251 } 4252 // always handle the navigation keys in the UI thread 4253 // Bubble up the key event as WebView doesn't handle it 4254 return false; 4255 } 4256 4257 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4258 // remove the long press message first 4259 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4260 mGotCenterDown = false; 4261 4262 if (mSelectingText) { 4263 if (mExtendSelection) { 4264 copySelection(); 4265 selectionDone(); 4266 } else { 4267 mExtendSelection = true; 4268 nativeSetExtendSelection(); 4269 invalidate(); // draw the i-beam instead of the arrow 4270 } 4271 return true; // discard press if copy in progress 4272 } 4273 4274 // perform the single click 4275 Rect visibleRect = sendOurVisibleRect(); 4276 // Note that sendOurVisibleRect calls viewToContent, so the 4277 // coordinates should be in content coordinates. 4278 if (!nativeCursorIntersects(visibleRect)) { 4279 return false; 4280 } 4281 WebViewCore.CursorData data = cursorData(); 4282 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4283 playSoundEffect(SoundEffectConstants.CLICK); 4284 if (nativeCursorIsTextInput()) { 4285 rebuildWebTextView(); 4286 centerKeyPressOnTextField(); 4287 if (inEditingMode()) { 4288 mWebTextView.setDefaultSelection(); 4289 } 4290 return true; 4291 } 4292 clearTextEntry(true); 4293 nativeSetFollowedLink(true); 4294 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4295 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4296 nativeCursorNodePointer()); 4297 } 4298 return true; 4299 } 4300 4301 // TODO: should we pass all the keys to DOM or check the meta tag 4302 if (nativeCursorWantsKeyEvents() || true) { 4303 // pass the key to DOM 4304 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4305 // return true as DOM handles the key 4306 return true; 4307 } 4308 4309 // Bubble up the key event as WebView doesn't handle it 4310 return false; 4311 } 4312 4313 /** 4314 * @hide pending API council approval. 4315 */ 4316 public void setUpSelect() { 4317 if (0 == mNativeClass) return; // client isn't initialized 4318 if (inFullScreenMode()) return; 4319 if (mSelectingText) return; 4320 mExtendSelection = false; 4321 mSelectingText = mDrawSelectionPointer = true; 4322 // don't let the picture change during text selection 4323 WebViewCore.pauseUpdatePicture(mWebViewCore); 4324 nativeResetSelection(); 4325 if (nativeHasCursorNode()) { 4326 Rect rect = nativeCursorNodeBounds(); 4327 mSelectX = contentToViewX(rect.left); 4328 mSelectY = contentToViewY(rect.top); 4329 } else if (mLastTouchY > getVisibleTitleHeight()) { 4330 mSelectX = mScrollX + (int) mLastTouchX; 4331 mSelectY = mScrollY + (int) mLastTouchY; 4332 } else { 4333 mSelectX = mScrollX + getViewWidth() / 2; 4334 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4335 } 4336 nativeHideCursor(); 4337 } 4338 4339 /** 4340 * Use this method to put the WebView into text selection mode. 4341 * Do not rely on this functionality; it will be deprecated in the future. 4342 */ 4343 public void emulateShiftHeld() { 4344 setUpSelect(); 4345 } 4346 4347 /** 4348 * @hide pending API council approval. 4349 */ 4350 public void selectAll() { 4351 if (0 == mNativeClass) return; // client isn't initialized 4352 if (inFullScreenMode()) return; 4353 if (!mSelectingText) setUpSelect(); 4354 nativeSelectAll(); 4355 mDrawSelectionPointer = false; 4356 mExtendSelection = true; 4357 invalidate(); 4358 } 4359 4360 /** 4361 * @hide pending API council approval. 4362 */ 4363 public boolean selectDialogIsUp() { 4364 return mSelectingText; 4365 } 4366 4367 /** 4368 * @hide pending API council approval. 4369 */ 4370 public void notifySelectDialogDismissed() { 4371 mSelectingText = false; 4372 WebViewCore.resumeUpdatePicture(mWebViewCore); 4373 } 4374 4375 /** 4376 * @hide pending API council approval. 4377 */ 4378 public void selectionDone() { 4379 if (mSelectingText) { 4380 WebChromeClient client = getWebChromeClient(); 4381 if (client != null) client.onSelectionDone(this); 4382 invalidate(); // redraw without selection 4383 notifySelectDialogDismissed(); 4384 } 4385 } 4386 4387 /** 4388 * @hide pending API council approval. 4389 */ 4390 public boolean copySelection() { 4391 boolean copiedSomething = false; 4392 String selection = getSelection(); 4393 if (selection != "") { 4394 if (DebugFlags.WEB_VIEW) { 4395 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4396 } 4397 Toast.makeText(mContext 4398 , com.android.internal.R.string.text_copied 4399 , Toast.LENGTH_SHORT).show(); 4400 copiedSomething = true; 4401 try { 4402 IClipboard clip = IClipboard.Stub.asInterface( 4403 ServiceManager.getService("clipboard")); 4404 clip.setClipboardText(selection); 4405 } catch (android.os.RemoteException e) { 4406 Log.e(LOGTAG, "Clipboard failed", e); 4407 } 4408 } 4409 invalidate(); // remove selection region and pointer 4410 return copiedSomething; 4411 } 4412 4413 /** 4414 * @hide pending API council approval. 4415 */ 4416 public String getSelection() { 4417 if (mNativeClass == 0) return ""; 4418 return nativeGetSelection(); 4419 } 4420 4421 @Override 4422 protected void onAttachedToWindow() { 4423 super.onAttachedToWindow(); 4424 if (hasWindowFocus()) setActive(true); 4425 } 4426 4427 @Override 4428 protected void onDetachedFromWindow() { 4429 clearHelpers(); 4430 dismissZoomControl(); 4431 if (hasWindowFocus()) setActive(false); 4432 super.onDetachedFromWindow(); 4433 } 4434 4435 /** 4436 * @deprecated WebView no longer needs to implement 4437 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4438 */ 4439 @Deprecated 4440 public void onChildViewAdded(View parent, View child) {} 4441 4442 /** 4443 * @deprecated WebView no longer needs to implement 4444 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4445 */ 4446 @Deprecated 4447 public void onChildViewRemoved(View p, View child) {} 4448 4449 /** 4450 * @deprecated WebView should not have implemented 4451 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4452 * does nothing now. 4453 */ 4454 @Deprecated 4455 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4456 } 4457 4458 private void setActive(boolean active) { 4459 if (active) { 4460 if (hasFocus()) { 4461 // If our window regained focus, and we have focus, then begin 4462 // drawing the cursor ring 4463 mDrawCursorRing = true; 4464 if (mNativeClass != 0) { 4465 nativeRecordButtons(true, false, true); 4466 if (inEditingMode()) { 4467 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4468 } 4469 } 4470 } else { 4471 // If our window gained focus, but we do not have it, do not 4472 // draw the cursor ring. 4473 mDrawCursorRing = false; 4474 // We do not call nativeRecordButtons here because we assume 4475 // that when we lost focus, or window focus, it got called with 4476 // false for the first parameter 4477 } 4478 } else { 4479 if (mWebViewCore != null && getSettings().getBuiltInZoomControls() 4480 && (mZoomButtonsController == null || 4481 !mZoomButtonsController.isVisible())) { 4482 /* 4483 * The zoom controls come in their own window, so our window 4484 * loses focus. Our policy is to not draw the cursor ring if 4485 * our window is not focused, but this is an exception since 4486 * the user can still navigate the web page with the zoom 4487 * controls showing. 4488 */ 4489 // If our window has lost focus, stop drawing the cursor ring 4490 mDrawCursorRing = false; 4491 } 4492 mGotKeyDown = false; 4493 mShiftIsPressed = false; 4494 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4495 mTouchMode = TOUCH_DONE_MODE; 4496 if (mNativeClass != 0) { 4497 nativeRecordButtons(false, false, true); 4498 } 4499 setFocusControllerInactive(); 4500 } 4501 invalidate(); 4502 } 4503 4504 // To avoid drawing the cursor ring, and remove the TextView when our window 4505 // loses focus. 4506 @Override 4507 public void onWindowFocusChanged(boolean hasWindowFocus) { 4508 setActive(hasWindowFocus); 4509 if (hasWindowFocus) { 4510 JWebCoreJavaBridge.setActiveWebView(this); 4511 } else { 4512 JWebCoreJavaBridge.removeActiveWebView(this); 4513 } 4514 super.onWindowFocusChanged(hasWindowFocus); 4515 } 4516 4517 /* 4518 * Pass a message to WebCore Thread, telling the WebCore::Page's 4519 * FocusController to be "inactive" so that it will 4520 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4521 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4522 */ 4523 /* package */ void setFocusControllerInactive() { 4524 // Do not need to also check whether mWebViewCore is null, because 4525 // mNativeClass is only set if mWebViewCore is non null 4526 if (mNativeClass == 0) return; 4527 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4528 } 4529 4530 @Override 4531 protected void onFocusChanged(boolean focused, int direction, 4532 Rect previouslyFocusedRect) { 4533 if (DebugFlags.WEB_VIEW) { 4534 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4535 } 4536 if (focused) { 4537 // When we regain focus, if we have window focus, resume drawing 4538 // the cursor ring 4539 if (hasWindowFocus()) { 4540 mDrawCursorRing = true; 4541 if (mNativeClass != 0) { 4542 nativeRecordButtons(true, false, true); 4543 } 4544 //} else { 4545 // The WebView has gained focus while we do not have 4546 // windowfocus. When our window lost focus, we should have 4547 // called nativeRecordButtons(false...) 4548 } 4549 } else { 4550 // When we lost focus, unless focus went to the TextView (which is 4551 // true if we are in editing mode), stop drawing the cursor ring. 4552 if (!inEditingMode()) { 4553 mDrawCursorRing = false; 4554 if (mNativeClass != 0) { 4555 nativeRecordButtons(false, false, true); 4556 } 4557 setFocusControllerInactive(); 4558 } 4559 mGotKeyDown = false; 4560 } 4561 4562 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4563 } 4564 4565 /** 4566 * @hide 4567 */ 4568 @Override 4569 protected boolean setFrame(int left, int top, int right, int bottom) { 4570 boolean changed = super.setFrame(left, top, right, bottom); 4571 if (!changed && mHeightCanMeasure) { 4572 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4573 // in WebViewCore after we get the first layout. We do call 4574 // requestLayout() when we get contentSizeChanged(). But the View 4575 // system won't call onSizeChanged if the dimension is not changed. 4576 // In this case, we need to call sendViewSizeZoom() explicitly to 4577 // notify the WebKit about the new dimensions. 4578 sendViewSizeZoom(); 4579 } 4580 return changed; 4581 } 4582 4583 private static class PostScale implements Runnable { 4584 final WebView mWebView; 4585 final boolean mUpdateTextWrap; 4586 4587 public PostScale(WebView webView, boolean updateTextWrap) { 4588 mWebView = webView; 4589 mUpdateTextWrap = updateTextWrap; 4590 } 4591 4592 public void run() { 4593 if (mWebView.mWebViewCore != null) { 4594 // we always force, in case our height changed, in which case we 4595 // still want to send the notification over to webkit. 4596 mWebView.setNewZoomScale(mWebView.mActualScale, 4597 mUpdateTextWrap, true); 4598 // update the zoom buttons as the scale can be changed 4599 if (mWebView.getSettings().getBuiltInZoomControls()) { 4600 mWebView.updateZoomButtonsEnabled(); 4601 } 4602 } 4603 } 4604 } 4605 4606 @Override 4607 protected void onSizeChanged(int w, int h, int ow, int oh) { 4608 super.onSizeChanged(w, h, ow, oh); 4609 // Center zooming to the center of the screen. 4610 if (mZoomScale == 0) { // unless we're already zooming 4611 // To anchor at top left corner. 4612 mZoomCenterX = 0; 4613 mZoomCenterY = getVisibleTitleHeight(); 4614 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4615 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4616 } 4617 4618 // adjust the max viewport width depending on the view dimensions. This 4619 // is to ensure the scaling is not going insane. So do not shrink it if 4620 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4621 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4622 if (newMaxViewportWidth > sMaxViewportWidth) { 4623 sMaxViewportWidth = newMaxViewportWidth; 4624 } 4625 4626 // update mMinZoomScale if the minimum zoom scale is not fixed 4627 if (!mMinZoomScaleFixed) { 4628 // when change from narrow screen to wide screen, the new viewWidth 4629 // can be wider than the old content width. We limit the minimum 4630 // scale to 1.0f. The proper minimum scale will be calculated when 4631 // the new picture shows up. 4632 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4633 / (mDrawHistory ? mHistoryPicture.getWidth() 4634 : mZoomOverviewWidth)); 4635 if (mInitialScaleInPercent > 0) { 4636 // limit the minZoomScale to the initialScale if it is set 4637 float initialScale = mInitialScaleInPercent / 100.0f; 4638 if (mMinZoomScale > initialScale) { 4639 mMinZoomScale = initialScale; 4640 } 4641 } 4642 } 4643 4644 dismissZoomControl(); 4645 4646 // onSizeChanged() is called during WebView layout. And any 4647 // requestLayout() is blocked during layout. As setNewZoomScale() will 4648 // call its child View to reposition itself through ViewManager's 4649 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4650 // <b/> 4651 // only update the text wrap scale if width changed. 4652 post(new PostScale(this, w != ow)); 4653 } 4654 4655 @Override 4656 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4657 super.onScrollChanged(l, t, oldl, oldt); 4658 if (!mInOverScrollMode) { 4659 sendOurVisibleRect(); 4660 // update WebKit if visible title bar height changed. The logic is same 4661 // as getVisibleTitleHeight. 4662 int titleHeight = getTitleHeight(); 4663 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4664 sendViewSizeZoom(); 4665 } 4666 } 4667 } 4668 4669 @Override 4670 public boolean dispatchKeyEvent(KeyEvent event) { 4671 boolean dispatch = true; 4672 4673 // Textfields and plugins need to receive the shift up key even if 4674 // another key was released while the shift key was held down. 4675 if (!inEditingMode() && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 4676 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4677 mGotKeyDown = true; 4678 } else { 4679 if (!mGotKeyDown) { 4680 /* 4681 * We got a key up for which we were not the recipient of 4682 * the original key down. Don't give it to the view. 4683 */ 4684 dispatch = false; 4685 } 4686 mGotKeyDown = false; 4687 } 4688 } 4689 4690 if (dispatch) { 4691 return super.dispatchKeyEvent(event); 4692 } else { 4693 // We didn't dispatch, so let something else handle the key 4694 return false; 4695 } 4696 } 4697 4698 // Here are the snap align logic: 4699 // 1. If it starts nearly horizontally or vertically, snap align; 4700 // 2. If there is a dramitic direction change, let it go; 4701 // 3. If there is a same direction back and forth, lock it. 4702 4703 // adjustable parameters 4704 private int mMinLockSnapReverseDistance; 4705 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4706 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4707 4708 private static int sign(float x) { 4709 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4710 } 4711 4712 // if the page can scroll <= this value, we won't allow the drag tracker 4713 // to have any effect. 4714 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4715 4716 private class DragTrackerHandler { 4717 private final DragTracker mProxy; 4718 private final float mStartY, mStartX; 4719 private final float mMinDY, mMinDX; 4720 private final float mMaxDY, mMaxDX; 4721 private float mCurrStretchY, mCurrStretchX; 4722 private int mSX, mSY; 4723 private Interpolator mInterp; 4724 private float[] mXY = new float[2]; 4725 4726 // inner (non-state) classes can't have enums :( 4727 private static final int DRAGGING_STATE = 0; 4728 private static final int ANIMATING_STATE = 1; 4729 private static final int FINISHED_STATE = 2; 4730 private int mState; 4731 4732 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4733 mProxy = proxy; 4734 4735 int docBottom = computeRealVerticalScrollRange() + getTitleHeight(); 4736 int viewTop = getScrollY(); 4737 int viewBottom = viewTop + getHeight(); 4738 4739 mStartY = y; 4740 mMinDY = -viewTop; 4741 mMaxDY = docBottom - viewBottom; 4742 4743 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4744 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4745 " up/down= " + mMinDY + " " + mMaxDY); 4746 } 4747 4748 int docRight = computeRealHorizontalScrollRange(); 4749 int viewLeft = getScrollX(); 4750 int viewRight = viewLeft + getWidth(); 4751 mStartX = x; 4752 mMinDX = -viewLeft; 4753 mMaxDX = docRight - viewRight; 4754 4755 mState = DRAGGING_STATE; 4756 mProxy.onStartDrag(x, y); 4757 4758 // ensure we buildBitmap at least once 4759 mSX = -99999; 4760 } 4761 4762 private float computeStretch(float delta, float min, float max) { 4763 float stretch = 0; 4764 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4765 if (delta < min) { 4766 stretch = delta - min; 4767 } else if (delta > max) { 4768 stretch = delta - max; 4769 } 4770 } 4771 return stretch; 4772 } 4773 4774 public void dragTo(float x, float y) { 4775 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4776 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4777 4778 if ((mSnapScrollMode & SNAP_X) != 0) { 4779 sy = 0; 4780 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4781 sx = 0; 4782 } 4783 4784 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4785 mCurrStretchX = sx; 4786 mCurrStretchY = sy; 4787 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4788 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4789 " " + sy); 4790 } 4791 if (mProxy.onStretchChange(sx, sy)) { 4792 invalidate(); 4793 } 4794 } 4795 } 4796 4797 public void stopDrag() { 4798 final int DURATION = 200; 4799 int now = (int)SystemClock.uptimeMillis(); 4800 mInterp = new Interpolator(2); 4801 mXY[0] = mCurrStretchX; 4802 mXY[1] = mCurrStretchY; 4803 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4804 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4805 mInterp.setKeyFrame(0, now, mXY, blend); 4806 float[] zerozero = new float[] { 0, 0 }; 4807 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4808 mState = ANIMATING_STATE; 4809 4810 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4811 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4812 } 4813 } 4814 4815 // Call this after each draw. If it ruturns null, the tracker is done 4816 public boolean isFinished() { 4817 return mState == FINISHED_STATE; 4818 } 4819 4820 private int hiddenHeightOfTitleBar() { 4821 return getTitleHeight() - getVisibleTitleHeight(); 4822 } 4823 4824 // need a way to know if 565 or 8888 is the right config for 4825 // capturing the display and giving it to the drag proxy 4826 private Bitmap.Config offscreenBitmapConfig() { 4827 // hard code 565 for now 4828 return Bitmap.Config.RGB_565; 4829 } 4830 4831 /* If the tracker draws, then this returns true, otherwise it will 4832 return false, and draw nothing. 4833 */ 4834 public boolean draw(Canvas canvas) { 4835 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4836 int sx = getScrollX(); 4837 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4838 if (mSX != sx || mSY != sy) { 4839 buildBitmap(sx, sy); 4840 mSX = sx; 4841 mSY = sy; 4842 } 4843 4844 if (mState == ANIMATING_STATE) { 4845 Interpolator.Result result = mInterp.timeToValues(mXY); 4846 if (result == Interpolator.Result.FREEZE_END) { 4847 mState = FINISHED_STATE; 4848 return false; 4849 } else { 4850 mProxy.onStretchChange(mXY[0], mXY[1]); 4851 invalidate(); 4852 // fall through to the draw 4853 } 4854 } 4855 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4856 canvas.translate(sx, sy); 4857 mProxy.onDraw(canvas); 4858 canvas.restoreToCount(count); 4859 return true; 4860 } 4861 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4862 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4863 mCurrStretchX + " " + mCurrStretchY); 4864 } 4865 return false; 4866 } 4867 4868 private void buildBitmap(int sx, int sy) { 4869 int w = getWidth(); 4870 int h = getViewHeight(); 4871 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4872 Canvas canvas = new Canvas(bm); 4873 canvas.translate(-sx, -sy); 4874 drawContent(canvas); 4875 4876 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4877 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4878 " " + sy + " " + w + " " + h); 4879 } 4880 mProxy.onBitmapChange(bm); 4881 } 4882 } 4883 4884 /** @hide */ 4885 public static class DragTracker { 4886 public void onStartDrag(float x, float y) {} 4887 public boolean onStretchChange(float sx, float sy) { 4888 // return true to have us inval the view 4889 return false; 4890 } 4891 public void onStopDrag() {} 4892 public void onBitmapChange(Bitmap bm) {} 4893 public void onDraw(Canvas canvas) {} 4894 } 4895 4896 /** @hide */ 4897 public DragTracker getDragTracker() { 4898 return mDragTracker; 4899 } 4900 4901 /** @hide */ 4902 public void setDragTracker(DragTracker tracker) { 4903 mDragTracker = tracker; 4904 } 4905 4906 private DragTracker mDragTracker; 4907 private DragTrackerHandler mDragTrackerHandler; 4908 4909 private class ScaleDetectorListener implements 4910 ScaleGestureDetector.OnScaleGestureListener { 4911 4912 public boolean onScaleBegin(ScaleGestureDetector detector) { 4913 // cancel the single touch handling 4914 cancelTouch(); 4915 dismissZoomControl(); 4916 // reset the zoom overview mode so that the page won't auto grow 4917 mInZoomOverview = false; 4918 // If it is in password mode, turn it off so it does not draw 4919 // misplaced. 4920 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4921 mWebTextView.setInPassword(false); 4922 } 4923 4924 mViewManager.startZoom(); 4925 4926 return true; 4927 } 4928 4929 public void onScaleEnd(ScaleGestureDetector detector) { 4930 if (mPreviewZoomOnly) { 4931 mPreviewZoomOnly = false; 4932 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4933 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4934 // don't reflow when zoom in; when zoom out, do reflow if the 4935 // new scale is almost minimum scale; 4936 boolean reflowNow = (mActualScale - mMinZoomScale 4937 <= MINIMUM_SCALE_INCREMENT) 4938 || ((mActualScale <= 0.8 * mTextWrapScale)); 4939 // force zoom after mPreviewZoomOnly is set to false so that the 4940 // new view size will be passed to the WebKit 4941 setNewZoomScale(mActualScale, reflowNow, true); 4942 // call invalidate() to draw without zoom filter 4943 invalidate(); 4944 } 4945 // adjust the edit text view if needed 4946 if (inEditingMode() && didUpdateTextViewBounds(false) 4947 && nativeFocusCandidateIsPassword()) { 4948 // If it is a password field, start drawing the 4949 // WebTextView once again. 4950 mWebTextView.setInPassword(true); 4951 } 4952 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4953 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4954 // may trigger the unwanted fling. 4955 mTouchMode = TOUCH_PINCH_DRAG; 4956 mConfirmMove = true; 4957 startTouch(detector.getFocusX(), detector.getFocusY(), 4958 mLastTouchTime); 4959 4960 mViewManager.endZoom(); 4961 } 4962 4963 public boolean onScale(ScaleGestureDetector detector) { 4964 float scale = (float) (Math.round(detector.getScaleFactor() 4965 * mActualScale * 100) / 100.0); 4966 if (Math.abs(scale - mActualScale) >= MINIMUM_SCALE_INCREMENT) { 4967 mPreviewZoomOnly = true; 4968 // limit the scale change per step 4969 if (scale > mActualScale) { 4970 scale = Math.min(scale, mActualScale * 1.25f); 4971 } else { 4972 scale = Math.max(scale, mActualScale * 0.8f); 4973 } 4974 mZoomCenterX = detector.getFocusX(); 4975 mZoomCenterY = detector.getFocusY(); 4976 setNewZoomScale(scale, false, false); 4977 invalidate(); 4978 return true; 4979 } 4980 return false; 4981 } 4982 } 4983 4984 private boolean hitFocusedPlugin(int contentX, int contentY) { 4985 if (DebugFlags.WEB_VIEW) { 4986 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4987 Rect r = nativeFocusNodeBounds(); 4988 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4989 + ", " + r.right + ", " + r.bottom + ")"); 4990 } 4991 return nativeFocusIsPlugin() 4992 && nativeFocusNodeBounds().contains(contentX, contentY); 4993 } 4994 4995 private boolean shouldForwardTouchEvent() { 4996 return mFullScreenHolder != null || (mForwardTouchEvents 4997 && !mSelectingText 4998 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4999 } 5000 5001 private boolean inFullScreenMode() { 5002 return mFullScreenHolder != null; 5003 } 5004 5005 @Override 5006 public boolean onTouchEvent(MotionEvent ev) { 5007 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 5008 return false; 5009 } 5010 5011 if (DebugFlags.WEB_VIEW) { 5012 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 5013 + mTouchMode); 5014 } 5015 5016 int action; 5017 float x, y; 5018 long eventTime = ev.getEventTime(); 5019 5020 // FIXME: we may consider to give WebKit an option to handle multi-touch 5021 // events later. 5022 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 5023 if (mAllowPanAndScale || mMinZoomScale < mMaxZoomScale) { 5024 mScaleDetector.onTouchEvent(ev); 5025 if (mScaleDetector.isInProgress()) { 5026 mLastTouchTime = eventTime; 5027 if (!mAllowPanAndScale) { 5028 return true; 5029 } 5030 } 5031 x = mScaleDetector.getFocusX(); 5032 y = mScaleDetector.getFocusY(); 5033 action = ev.getAction() & MotionEvent.ACTION_MASK; 5034 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5035 cancelTouch(); 5036 action = MotionEvent.ACTION_DOWN; 5037 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5038 // set mLastTouchX/Y to the remaining point 5039 mLastTouchX = x; 5040 mLastTouchY = y; 5041 } else if (action == MotionEvent.ACTION_MOVE) { 5042 // negative x or y indicate it is on the edge, skip it. 5043 if (x < 0 || y < 0) { 5044 return true; 5045 } 5046 } 5047 } else { 5048 // if the page disallow zoom, skip multi-pointer action 5049 return true; 5050 } 5051 } else { 5052 action = ev.getAction(); 5053 x = ev.getX(); 5054 y = ev.getY(); 5055 } 5056 5057 // Due to the touch screen edge effect, a touch closer to the edge 5058 // always snapped to the edge. As getViewWidth() can be different from 5059 // getWidth() due to the scrollbar, adjusting the point to match 5060 // getViewWidth(). Same applied to the height. 5061 if (x > getViewWidth() - 1) { 5062 x = getViewWidth() - 1; 5063 } 5064 if (y > getViewHeightWithTitle() - 1) { 5065 y = getViewHeightWithTitle() - 1; 5066 } 5067 5068 float fDeltaX = mLastTouchX - x; 5069 float fDeltaY = mLastTouchY - y; 5070 int deltaX = (int) fDeltaX; 5071 int deltaY = (int) fDeltaY; 5072 int contentX = viewToContentX((int) x + mScrollX); 5073 int contentY = viewToContentY((int) y + mScrollY); 5074 5075 switch (action) { 5076 case MotionEvent.ACTION_DOWN: { 5077 mPreventDefault = PREVENT_DEFAULT_NO; 5078 mConfirmMove = false; 5079 if (!mScroller.isFinished()) { 5080 // stop the current scroll animation, but if this is 5081 // the start of a fling, allow it to add to the current 5082 // fling's velocity 5083 mScroller.abortAnimation(); 5084 mTouchMode = TOUCH_DRAG_START_MODE; 5085 mConfirmMove = true; 5086 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5087 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5088 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5089 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5090 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5091 } else { 5092 // commit the short press action for the previous tap 5093 doShortPress(); 5094 mTouchMode = TOUCH_INIT_MODE; 5095 mDeferTouchProcess = (!inFullScreenMode() 5096 && mForwardTouchEvents) ? hitFocusedPlugin( 5097 contentX, contentY) : false; 5098 } 5099 } else { // the normal case 5100 mPreviewZoomOnly = false; 5101 mTouchMode = TOUCH_INIT_MODE; 5102 mDeferTouchProcess = (!inFullScreenMode() 5103 && mForwardTouchEvents) ? hitFocusedPlugin( 5104 contentX, contentY) : false; 5105 mWebViewCore.sendMessage( 5106 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5107 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5108 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5109 (eventTime - mLastTouchUpTime), eventTime); 5110 } 5111 if (mSelectingText) { 5112 mDrawSelectionPointer = false; 5113 mSelectionStarted = nativeStartSelection(contentX, contentY); 5114 if (DebugFlags.WEB_VIEW) { 5115 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5116 } 5117 invalidate(); 5118 } 5119 } 5120 // Trigger the link 5121 if (mTouchMode == TOUCH_INIT_MODE 5122 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5123 mPrivateHandler.sendEmptyMessageDelayed( 5124 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5125 mPrivateHandler.sendEmptyMessageDelayed( 5126 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5127 if (inFullScreenMode() || mDeferTouchProcess) { 5128 mPreventDefault = PREVENT_DEFAULT_YES; 5129 } else if (mForwardTouchEvents) { 5130 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5131 } else { 5132 mPreventDefault = PREVENT_DEFAULT_NO; 5133 } 5134 // pass the touch events from UI thread to WebCore thread 5135 if (shouldForwardTouchEvent()) { 5136 TouchEventData ted = new TouchEventData(); 5137 ted.mAction = action; 5138 ted.mX = contentX; 5139 ted.mY = contentY; 5140 ted.mMetaState = ev.getMetaState(); 5141 ted.mReprocess = mDeferTouchProcess; 5142 if (mDeferTouchProcess) { 5143 // still needs to set them for compute deltaX/Y 5144 mLastTouchX = x; 5145 mLastTouchY = y; 5146 ted.mViewX = x; 5147 ted.mViewY = y; 5148 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5149 break; 5150 } 5151 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5152 if (!inFullScreenMode()) { 5153 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5154 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5155 action, 0), TAP_TIMEOUT); 5156 } 5157 } 5158 } 5159 startTouch(x, y, eventTime); 5160 break; 5161 } 5162 case MotionEvent.ACTION_MOVE: { 5163 boolean firstMove = false; 5164 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5165 >= mTouchSlopSquare) { 5166 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5167 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5168 mConfirmMove = true; 5169 firstMove = true; 5170 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5171 mTouchMode = TOUCH_INIT_MODE; 5172 } 5173 } 5174 // pass the touch events from UI thread to WebCore thread 5175 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5176 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5177 mLastSentTouchTime = eventTime; 5178 TouchEventData ted = new TouchEventData(); 5179 ted.mAction = action; 5180 ted.mX = contentX; 5181 ted.mY = contentY; 5182 ted.mMetaState = ev.getMetaState(); 5183 ted.mReprocess = mDeferTouchProcess; 5184 if (mDeferTouchProcess) { 5185 ted.mViewX = x; 5186 ted.mViewY = y; 5187 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5188 break; 5189 } 5190 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5191 if (firstMove && !inFullScreenMode()) { 5192 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5193 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5194 action, 0), TAP_TIMEOUT); 5195 } 5196 } 5197 if (mTouchMode == TOUCH_DONE_MODE 5198 || mPreventDefault == PREVENT_DEFAULT_YES) { 5199 // no dragging during scroll zoom animation, or when prevent 5200 // default is yes 5201 break; 5202 } 5203 if (mVelocityTracker == null) { 5204 Log.e(LOGTAG, "Got null mVelocityTracker when " 5205 + "mPreventDefault = " + mPreventDefault 5206 + " mDeferTouchProcess = " + mDeferTouchProcess 5207 + " mTouchMode = " + mTouchMode); 5208 } 5209 mVelocityTracker.addMovement(ev); 5210 if (mSelectingText && mSelectionStarted) { 5211 if (DebugFlags.WEB_VIEW) { 5212 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5213 } 5214 nativeExtendSelection(contentX, contentY); 5215 invalidate(); 5216 break; 5217 } 5218 5219 if (mTouchMode != TOUCH_DRAG_MODE) { 5220 5221 if (!mConfirmMove) { 5222 break; 5223 } 5224 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5225 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5226 // track mLastTouchTime as we may need to do fling at 5227 // ACTION_UP 5228 mLastTouchTime = eventTime; 5229 break; 5230 } 5231 5232 // Only lock dragging to one axis if we don't have a scale in progress. 5233 // Scaling implies free-roaming movement. Note we'll only ever get here 5234 // if mAllowPanAndScale is true. 5235 if (mScaleDetector != null && !mScaleDetector.isInProgress()) { 5236 // if it starts nearly horizontal or vertical, enforce it 5237 int ax = Math.abs(deltaX); 5238 int ay = Math.abs(deltaY); 5239 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5240 mSnapScrollMode = SNAP_X; 5241 mSnapPositive = deltaX > 0; 5242 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5243 mSnapScrollMode = SNAP_Y; 5244 mSnapPositive = deltaY > 0; 5245 } 5246 } 5247 5248 mTouchMode = TOUCH_DRAG_MODE; 5249 mLastTouchX = x; 5250 mLastTouchY = y; 5251 fDeltaX = 0.0f; 5252 fDeltaY = 0.0f; 5253 deltaX = 0; 5254 deltaY = 0; 5255 5256 startDrag(); 5257 } 5258 5259 if (mDragTrackerHandler != null) { 5260 mDragTrackerHandler.dragTo(x, y); 5261 } 5262 5263 // do pan 5264 boolean done = false; 5265 boolean keepScrollBarsVisible = false; 5266 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5267 mLastTouchX = x; 5268 mLastTouchY = y; 5269 keepScrollBarsVisible = done = true; 5270 } else { 5271 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5272 int ax = Math.abs(deltaX); 5273 int ay = Math.abs(deltaY); 5274 if (mSnapScrollMode == SNAP_X) { 5275 // radical change means getting out of snap mode 5276 if (ay > MAX_SLOPE_FOR_DIAG * ax 5277 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5278 mSnapScrollMode = SNAP_NONE; 5279 } 5280 // reverse direction means lock in the snap mode 5281 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5282 (mSnapPositive 5283 ? deltaX < -mMinLockSnapReverseDistance 5284 : deltaX > mMinLockSnapReverseDistance)) { 5285 mSnapScrollMode |= SNAP_LOCK; 5286 } 5287 } else { 5288 // radical change means getting out of snap mode 5289 if (ax > MAX_SLOPE_FOR_DIAG * ay 5290 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5291 mSnapScrollMode = SNAP_NONE; 5292 } 5293 // reverse direction means lock in the snap mode 5294 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5295 (mSnapPositive 5296 ? deltaY < -mMinLockSnapReverseDistance 5297 : deltaY > mMinLockSnapReverseDistance)) { 5298 mSnapScrollMode |= SNAP_LOCK; 5299 } 5300 } 5301 } 5302 if (mSnapScrollMode != SNAP_NONE) { 5303 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5304 deltaY = 0; 5305 } else { 5306 deltaX = 0; 5307 } 5308 } 5309 if ((deltaX | deltaY) != 0) { 5310 if (deltaX != 0) { 5311 mLastTouchX = x; 5312 } 5313 if (deltaY != 0) { 5314 mLastTouchY = y; 5315 } 5316 mHeldMotionless = MOTIONLESS_FALSE; 5317 } else { 5318 // keep the scrollbar on the screen even there is no 5319 // scroll 5320 mLastTouchX = x; 5321 mLastTouchY = y; 5322 keepScrollBarsVisible = true; 5323 } 5324 mLastTouchTime = eventTime; 5325 mUserScroll = true; 5326 } 5327 5328 doDrag(deltaX, deltaY); 5329 5330 if (keepScrollBarsVisible) { 5331 if (mHeldMotionless != MOTIONLESS_TRUE) { 5332 mHeldMotionless = MOTIONLESS_TRUE; 5333 invalidate(); 5334 } 5335 // keep the scrollbar on the screen even there is no scroll 5336 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5337 false); 5338 // return false to indicate that we can't pan out of the 5339 // view space 5340 return !done; 5341 } 5342 break; 5343 } 5344 case MotionEvent.ACTION_UP: { 5345 // pass the touch events from UI thread to WebCore thread 5346 if (shouldForwardTouchEvent()) { 5347 TouchEventData ted = new TouchEventData(); 5348 ted.mAction = action; 5349 ted.mX = contentX; 5350 ted.mY = contentY; 5351 ted.mMetaState = ev.getMetaState(); 5352 ted.mReprocess = mDeferTouchProcess; 5353 if (mDeferTouchProcess) { 5354 ted.mViewX = x; 5355 ted.mViewY = y; 5356 } 5357 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5358 } 5359 mLastTouchUpTime = eventTime; 5360 switch (mTouchMode) { 5361 case TOUCH_DOUBLE_TAP_MODE: // double tap 5362 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5363 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5364 if (inFullScreenMode() || mDeferTouchProcess) { 5365 TouchEventData ted = new TouchEventData(); 5366 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5367 ted.mX = contentX; 5368 ted.mY = contentY; 5369 ted.mMetaState = ev.getMetaState(); 5370 ted.mReprocess = mDeferTouchProcess; 5371 if (mDeferTouchProcess) { 5372 ted.mViewX = x; 5373 ted.mViewY = y; 5374 } 5375 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5376 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5377 doDoubleTap(); 5378 mTouchMode = TOUCH_DONE_MODE; 5379 } 5380 break; 5381 case TOUCH_INIT_MODE: // tap 5382 case TOUCH_SHORTPRESS_START_MODE: 5383 case TOUCH_SHORTPRESS_MODE: 5384 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5385 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5386 if (mConfirmMove) { 5387 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5388 " WebCore's response for touch down."); 5389 if (mPreventDefault != PREVENT_DEFAULT_YES 5390 && (computeMaxScrollX() > 0 5391 || computeMaxScrollY() > 0)) { 5392 // UI takes control back, cancel WebCore touch 5393 cancelWebCoreTouchEvent(contentX, contentY, 5394 true); 5395 // we will not rewrite drag code here, but we 5396 // will try fling if it applies. 5397 WebViewCore.reducePriority(); 5398 // to get better performance, pause updating the 5399 // picture 5400 WebViewCore.pauseUpdatePicture(mWebViewCore); 5401 // fall through to TOUCH_DRAG_MODE 5402 } else { 5403 // WebKit may consume the touch event and modify 5404 // DOM. drawContentPicture() will be called with 5405 // animateSroll as true for better performance. 5406 // Force redraw in high-quality. 5407 invalidate(); 5408 break; 5409 } 5410 } else { 5411 if (mSelectingText) { 5412 if (nativeHitSelection(contentX, contentY)) { 5413 copySelection(); 5414 } 5415 selectionDone(); 5416 break; 5417 } 5418 if (mTouchMode == TOUCH_INIT_MODE) { 5419 mPrivateHandler.sendEmptyMessageDelayed( 5420 RELEASE_SINGLE_TAP, ViewConfiguration 5421 .getDoubleTapTimeout()); 5422 } else { 5423 doShortPress(); 5424 } 5425 break; 5426 } 5427 case TOUCH_DRAG_MODE: 5428 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5429 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5430 // if the user waits a while w/o moving before the 5431 // up, we don't want to do a fling 5432 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5433 if (mVelocityTracker == null) { 5434 Log.e(LOGTAG, "Got null mVelocityTracker when " 5435 + "mPreventDefault = " 5436 + mPreventDefault 5437 + " mDeferTouchProcess = " 5438 + mDeferTouchProcess); 5439 } 5440 mVelocityTracker.addMovement(ev); 5441 // set to MOTIONLESS_IGNORE so that it won't keep 5442 // removing and sending message in 5443 // drawCoreAndCursorRing() 5444 mHeldMotionless = MOTIONLESS_IGNORE; 5445 doFling(); 5446 break; 5447 } else { 5448 if (mScroller.springback(mScrollX, mScrollY, 0, 5449 computeMaxScrollX(), 0, 5450 computeMaxScrollY())) { 5451 invalidate(); 5452 } 5453 } 5454 // redraw in high-quality, as we're done dragging 5455 mHeldMotionless = MOTIONLESS_TRUE; 5456 invalidate(); 5457 // fall through 5458 case TOUCH_DRAG_START_MODE: 5459 // TOUCH_DRAG_START_MODE should not happen for the real 5460 // device as we almost certain will get a MOVE. But this 5461 // is possible on emulator. 5462 mLastVelocity = 0; 5463 WebViewCore.resumePriority(); 5464 WebViewCore.resumeUpdatePicture(mWebViewCore); 5465 break; 5466 } 5467 stopTouch(); 5468 break; 5469 } 5470 case MotionEvent.ACTION_CANCEL: { 5471 if (mTouchMode == TOUCH_DRAG_MODE) { 5472 mScroller.springback(mScrollX, mScrollY, 0, 5473 computeMaxScrollX(), 0, computeMaxScrollY()); 5474 invalidate(); 5475 } 5476 cancelWebCoreTouchEvent(contentX, contentY, false); 5477 cancelTouch(); 5478 break; 5479 } 5480 } 5481 return true; 5482 } 5483 5484 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5485 if (shouldForwardTouchEvent()) { 5486 if (removeEvents) { 5487 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5488 } 5489 TouchEventData ted = new TouchEventData(); 5490 ted.mX = x; 5491 ted.mY = y; 5492 ted.mAction = MotionEvent.ACTION_CANCEL; 5493 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5494 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5495 } 5496 } 5497 5498 private void startTouch(float x, float y, long eventTime) { 5499 // Remember where the motion event started 5500 mLastTouchX = x; 5501 mLastTouchY = y; 5502 mLastTouchTime = eventTime; 5503 mVelocityTracker = VelocityTracker.obtain(); 5504 mSnapScrollMode = SNAP_NONE; 5505 if (mDragTracker != null) { 5506 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5507 } 5508 } 5509 5510 private void startDrag() { 5511 WebViewCore.reducePriority(); 5512 // to get better performance, pause updating the picture 5513 WebViewCore.pauseUpdatePicture(mWebViewCore); 5514 if (!mDragFromTextInput) { 5515 nativeHideCursor(); 5516 } 5517 WebSettings settings = getSettings(); 5518 if (settings.supportZoom() 5519 && settings.getBuiltInZoomControls() 5520 && !getZoomButtonsController().isVisible() 5521 && mMinZoomScale < mMaxZoomScale 5522 && (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5523 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF)) { 5524 mZoomButtonsController.setVisible(true); 5525 int count = settings.getDoubleTapToastCount(); 5526 if (mInZoomOverview && count > 0) { 5527 settings.setDoubleTapToastCount(--count); 5528 Toast.makeText(mContext, 5529 com.android.internal.R.string.double_tap_toast, 5530 Toast.LENGTH_LONG).show(); 5531 } 5532 } 5533 } 5534 5535 private void doDrag(int deltaX, int deltaY) { 5536 if ((deltaX | deltaY) != 0) { 5537 final int oldX = mScrollX; 5538 final int oldY = mScrollY; 5539 final int rangeX = computeMaxScrollX(); 5540 final int rangeY = computeMaxScrollY(); 5541 overscrollBy(deltaX, deltaY, oldX, oldY, 5542 rangeX, rangeY, 5543 mOverscrollDistance, mOverscrollDistance, true); 5544 5545 if (mEdgeGlowTop != null) { 5546 // Don't show left/right glows if we fit the whole content. 5547 if (rangeX > 0) { 5548 final int pulledToX = oldX + deltaX; 5549 if (pulledToX < 0) { 5550 mEdgeGlowLeft.onPull((float) deltaX / getWidth()); 5551 } else if (pulledToX > rangeX) { 5552 mEdgeGlowRight.onPull((float) deltaX / getWidth()); 5553 } 5554 } 5555 5556 if (rangeY > 0 || getOverscrollMode() == OVERSCROLL_ALWAYS) { 5557 final int pulledToY = oldY + deltaY; 5558 if (pulledToY < 0) { 5559 mEdgeGlowTop.onPull((float) deltaY / getHeight()); 5560 } else if (pulledToY > rangeY) { 5561 mEdgeGlowBottom.onPull((float) deltaY / getHeight()); 5562 } 5563 } 5564 } 5565 } 5566 if (!getSettings().getBuiltInZoomControls()) { 5567 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 5568 if (mZoomControls != null && showPlusMinus) { 5569 if (mZoomControls.getVisibility() == View.VISIBLE) { 5570 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5571 } else { 5572 mZoomControls.show(showPlusMinus, false); 5573 } 5574 mPrivateHandler.postDelayed(mZoomControlRunnable, 5575 ZOOM_CONTROLS_TIMEOUT); 5576 } 5577 } 5578 } 5579 5580 private void stopTouch() { 5581 if (mDragTrackerHandler != null) { 5582 mDragTrackerHandler.stopDrag(); 5583 } 5584 // we also use mVelocityTracker == null to tell us that we are 5585 // not "moving around", so we can take the slower/prettier 5586 // mode in the drawing code 5587 if (mVelocityTracker != null) { 5588 mVelocityTracker.recycle(); 5589 mVelocityTracker = null; 5590 } 5591 5592 // Release any pulled glows 5593 if (mEdgeGlowTop != null) { 5594 mEdgeGlowTop.onRelease(); 5595 mEdgeGlowBottom.onRelease(); 5596 mEdgeGlowLeft.onRelease(); 5597 mEdgeGlowRight.onRelease(); 5598 } 5599 } 5600 5601 private void cancelTouch() { 5602 if (mDragTrackerHandler != null) { 5603 mDragTrackerHandler.stopDrag(); 5604 } 5605 // we also use mVelocityTracker == null to tell us that we are 5606 // not "moving around", so we can take the slower/prettier 5607 // mode in the drawing code 5608 if (mVelocityTracker != null) { 5609 mVelocityTracker.recycle(); 5610 mVelocityTracker = null; 5611 } 5612 5613 // Release any pulled glows 5614 if (mEdgeGlowTop != null) { 5615 mEdgeGlowTop.onRelease(); 5616 mEdgeGlowBottom.onRelease(); 5617 mEdgeGlowLeft.onRelease(); 5618 mEdgeGlowRight.onRelease(); 5619 } 5620 5621 if (mTouchMode == TOUCH_DRAG_MODE) { 5622 WebViewCore.resumePriority(); 5623 WebViewCore.resumeUpdatePicture(mWebViewCore); 5624 } 5625 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5626 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5627 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5628 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5629 mHeldMotionless = MOTIONLESS_TRUE; 5630 mTouchMode = TOUCH_DONE_MODE; 5631 nativeHideCursor(); 5632 } 5633 5634 private long mTrackballFirstTime = 0; 5635 private long mTrackballLastTime = 0; 5636 private float mTrackballRemainsX = 0.0f; 5637 private float mTrackballRemainsY = 0.0f; 5638 private int mTrackballXMove = 0; 5639 private int mTrackballYMove = 0; 5640 private boolean mSelectingText = false; 5641 private boolean mSelectionStarted = false; 5642 private boolean mExtendSelection = false; 5643 private boolean mDrawSelectionPointer = false; 5644 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5645 private static final int TRACKBALL_TIMEOUT = 200; 5646 private static final int TRACKBALL_WAIT = 100; 5647 private static final int TRACKBALL_SCALE = 400; 5648 private static final int TRACKBALL_SCROLL_COUNT = 5; 5649 private static final int TRACKBALL_MOVE_COUNT = 10; 5650 private static final int TRACKBALL_MULTIPLIER = 3; 5651 private static final int SELECT_CURSOR_OFFSET = 16; 5652 private int mSelectX = 0; 5653 private int mSelectY = 0; 5654 private boolean mFocusSizeChanged = false; 5655 private boolean mShiftIsPressed = false; 5656 private boolean mTrackballDown = false; 5657 private long mTrackballUpTime = 0; 5658 private long mLastCursorTime = 0; 5659 private Rect mLastCursorBounds; 5660 5661 // Set by default; BrowserActivity clears to interpret trackball data 5662 // directly for movement. Currently, the framework only passes 5663 // arrow key events, not trackball events, from one child to the next 5664 private boolean mMapTrackballToArrowKeys = true; 5665 5666 public void setMapTrackballToArrowKeys(boolean setMap) { 5667 mMapTrackballToArrowKeys = setMap; 5668 } 5669 5670 void resetTrackballTime() { 5671 mTrackballLastTime = 0; 5672 } 5673 5674 @Override 5675 public boolean onTrackballEvent(MotionEvent ev) { 5676 long time = ev.getEventTime(); 5677 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5678 if (ev.getY() > 0) pageDown(true); 5679 if (ev.getY() < 0) pageUp(true); 5680 return true; 5681 } 5682 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5683 if (mSelectingText) { 5684 return true; // discard press if copy in progress 5685 } 5686 mTrackballDown = true; 5687 if (mNativeClass == 0) { 5688 return false; 5689 } 5690 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5691 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5692 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5693 nativeSelectBestAt(mLastCursorBounds); 5694 } 5695 if (DebugFlags.WEB_VIEW) { 5696 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5697 + " time=" + time 5698 + " mLastCursorTime=" + mLastCursorTime); 5699 } 5700 if (isInTouchMode()) requestFocusFromTouch(); 5701 return false; // let common code in onKeyDown at it 5702 } 5703 if (ev.getAction() == MotionEvent.ACTION_UP) { 5704 // LONG_PRESS_CENTER is set in common onKeyDown 5705 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5706 mTrackballDown = false; 5707 mTrackballUpTime = time; 5708 if (mSelectingText) { 5709 if (mExtendSelection) { 5710 copySelection(); 5711 selectionDone(); 5712 } else { 5713 mExtendSelection = true; 5714 nativeSetExtendSelection(); 5715 invalidate(); // draw the i-beam instead of the arrow 5716 } 5717 return true; // discard press if copy in progress 5718 } 5719 if (DebugFlags.WEB_VIEW) { 5720 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5721 + " time=" + time 5722 ); 5723 } 5724 return false; // let common code in onKeyUp at it 5725 } 5726 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5727 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5728 return false; 5729 } 5730 if (mTrackballDown) { 5731 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5732 return true; // discard move if trackball is down 5733 } 5734 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5735 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5736 return true; 5737 } 5738 // TODO: alternatively we can do panning as touch does 5739 switchOutDrawHistory(); 5740 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5741 if (DebugFlags.WEB_VIEW) { 5742 Log.v(LOGTAG, "onTrackballEvent time=" 5743 + time + " last=" + mTrackballLastTime); 5744 } 5745 mTrackballFirstTime = time; 5746 mTrackballXMove = mTrackballYMove = 0; 5747 } 5748 mTrackballLastTime = time; 5749 if (DebugFlags.WEB_VIEW) { 5750 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5751 } 5752 mTrackballRemainsX += ev.getX(); 5753 mTrackballRemainsY += ev.getY(); 5754 doTrackball(time); 5755 return true; 5756 } 5757 5758 void moveSelection(float xRate, float yRate) { 5759 if (mNativeClass == 0) 5760 return; 5761 int width = getViewWidth(); 5762 int height = getViewHeight(); 5763 mSelectX += xRate; 5764 mSelectY += yRate; 5765 int maxX = width + mScrollX; 5766 int maxY = height + mScrollY; 5767 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5768 , mSelectX)); 5769 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5770 , mSelectY)); 5771 if (DebugFlags.WEB_VIEW) { 5772 Log.v(LOGTAG, "moveSelection" 5773 + " mSelectX=" + mSelectX 5774 + " mSelectY=" + mSelectY 5775 + " mScrollX=" + mScrollX 5776 + " mScrollY=" + mScrollY 5777 + " xRate=" + xRate 5778 + " yRate=" + yRate 5779 ); 5780 } 5781 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5782 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5783 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5784 : 0; 5785 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5786 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5787 : 0; 5788 pinScrollBy(scrollX, scrollY, true, 0); 5789 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5790 requestRectangleOnScreen(select); 5791 invalidate(); 5792 } 5793 5794 private int scaleTrackballX(float xRate, int width) { 5795 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5796 int nextXMove = xMove; 5797 if (xMove > 0) { 5798 if (xMove > mTrackballXMove) { 5799 xMove -= mTrackballXMove; 5800 } 5801 } else if (xMove < mTrackballXMove) { 5802 xMove -= mTrackballXMove; 5803 } 5804 mTrackballXMove = nextXMove; 5805 return xMove; 5806 } 5807 5808 private int scaleTrackballY(float yRate, int height) { 5809 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5810 int nextYMove = yMove; 5811 if (yMove > 0) { 5812 if (yMove > mTrackballYMove) { 5813 yMove -= mTrackballYMove; 5814 } 5815 } else if (yMove < mTrackballYMove) { 5816 yMove -= mTrackballYMove; 5817 } 5818 mTrackballYMove = nextYMove; 5819 return yMove; 5820 } 5821 5822 private int keyCodeToSoundsEffect(int keyCode) { 5823 switch(keyCode) { 5824 case KeyEvent.KEYCODE_DPAD_UP: 5825 return SoundEffectConstants.NAVIGATION_UP; 5826 case KeyEvent.KEYCODE_DPAD_RIGHT: 5827 return SoundEffectConstants.NAVIGATION_RIGHT; 5828 case KeyEvent.KEYCODE_DPAD_DOWN: 5829 return SoundEffectConstants.NAVIGATION_DOWN; 5830 case KeyEvent.KEYCODE_DPAD_LEFT: 5831 return SoundEffectConstants.NAVIGATION_LEFT; 5832 } 5833 throw new IllegalArgumentException("keyCode must be one of " + 5834 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5835 "KEYCODE_DPAD_LEFT}."); 5836 } 5837 5838 private void doTrackball(long time) { 5839 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5840 if (elapsed == 0) { 5841 elapsed = TRACKBALL_TIMEOUT; 5842 } 5843 float xRate = mTrackballRemainsX * 1000 / elapsed; 5844 float yRate = mTrackballRemainsY * 1000 / elapsed; 5845 int viewWidth = getViewWidth(); 5846 int viewHeight = getViewHeight(); 5847 if (mSelectingText) { 5848 if (!mDrawSelectionPointer) { 5849 // The last selection was made by touch, disabling drawing the 5850 // selection pointer. Allow the trackball to adjust the 5851 // position of the touch control. 5852 mSelectX = contentToViewX(nativeSelectionX()); 5853 mSelectY = contentToViewY(nativeSelectionY()); 5854 mDrawSelectionPointer = mExtendSelection = true; 5855 nativeSetExtendSelection(); 5856 } 5857 moveSelection(scaleTrackballX(xRate, viewWidth), 5858 scaleTrackballY(yRate, viewHeight)); 5859 mTrackballRemainsX = mTrackballRemainsY = 0; 5860 return; 5861 } 5862 float ax = Math.abs(xRate); 5863 float ay = Math.abs(yRate); 5864 float maxA = Math.max(ax, ay); 5865 if (DebugFlags.WEB_VIEW) { 5866 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5867 + " xRate=" + xRate 5868 + " yRate=" + yRate 5869 + " mTrackballRemainsX=" + mTrackballRemainsX 5870 + " mTrackballRemainsY=" + mTrackballRemainsY); 5871 } 5872 int width = mContentWidth - viewWidth; 5873 int height = mContentHeight - viewHeight; 5874 if (width < 0) width = 0; 5875 if (height < 0) height = 0; 5876 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5877 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5878 maxA = Math.max(ax, ay); 5879 int count = Math.max(0, (int) maxA); 5880 int oldScrollX = mScrollX; 5881 int oldScrollY = mScrollY; 5882 if (count > 0) { 5883 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5884 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5885 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5886 KeyEvent.KEYCODE_DPAD_RIGHT; 5887 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5888 if (DebugFlags.WEB_VIEW) { 5889 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5890 + " count=" + count 5891 + " mTrackballRemainsX=" + mTrackballRemainsX 5892 + " mTrackballRemainsY=" + mTrackballRemainsY); 5893 } 5894 if (mNativeClass != 0 && nativeFocusIsPlugin()) { 5895 for (int i = 0; i < count; i++) { 5896 letPluginHandleNavKey(selectKeyCode, time, true); 5897 } 5898 letPluginHandleNavKey(selectKeyCode, time, false); 5899 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5900 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5901 } 5902 mTrackballRemainsX = mTrackballRemainsY = 0; 5903 } 5904 if (count >= TRACKBALL_SCROLL_COUNT) { 5905 int xMove = scaleTrackballX(xRate, width); 5906 int yMove = scaleTrackballY(yRate, height); 5907 if (DebugFlags.WEB_VIEW) { 5908 Log.v(LOGTAG, "doTrackball pinScrollBy" 5909 + " count=" + count 5910 + " xMove=" + xMove + " yMove=" + yMove 5911 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5912 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5913 ); 5914 } 5915 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5916 xMove = 0; 5917 } 5918 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5919 yMove = 0; 5920 } 5921 if (xMove != 0 || yMove != 0) { 5922 pinScrollBy(xMove, yMove, true, 0); 5923 } 5924 mUserScroll = true; 5925 } 5926 } 5927 5928 private int computeMaxScrollX() { 5929 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 5930 } 5931 5932 private int computeMaxScrollY() { 5933 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 5934 - getViewHeightWithTitle(), 0); 5935 } 5936 5937 public void flingScroll(int vx, int vy) { 5938 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5939 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 5940 invalidate(); 5941 } 5942 5943 private void doFling() { 5944 if (mVelocityTracker == null) { 5945 return; 5946 } 5947 int maxX = computeMaxScrollX(); 5948 int maxY = computeMaxScrollY(); 5949 5950 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5951 int vx = (int) mVelocityTracker.getXVelocity(); 5952 int vy = (int) mVelocityTracker.getYVelocity(); 5953 5954 if (mSnapScrollMode != SNAP_NONE) { 5955 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5956 vy = 0; 5957 } else { 5958 vx = 0; 5959 } 5960 } 5961 if (true /* EMG release: make our fling more like Maps' */) { 5962 // maps cuts their velocity in half 5963 vx = vx * 3 / 4; 5964 vy = vy * 3 / 4; 5965 } 5966 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5967 WebViewCore.resumePriority(); 5968 WebViewCore.resumeUpdatePicture(mWebViewCore); 5969 if (mScroller.springback(mScrollX, mScrollY, 0, computeMaxScrollX(), 5970 0, computeMaxScrollY())) { 5971 invalidate(); 5972 } 5973 return; 5974 } 5975 float currentVelocity = mScroller.getCurrVelocity(); 5976 if (mLastVelocity > 0 && currentVelocity > 0) { 5977 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5978 - Math.atan2(vy, vx))); 5979 final float circle = (float) (Math.PI) * 2.0f; 5980 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5981 vx += currentVelocity * mLastVelX / mLastVelocity; 5982 vy += currentVelocity * mLastVelY / mLastVelocity; 5983 if (DebugFlags.WEB_VIEW) { 5984 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5985 } 5986 } else if (DebugFlags.WEB_VIEW) { 5987 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5988 } 5989 } else if (DebugFlags.WEB_VIEW) { 5990 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5991 + " current=" + currentVelocity 5992 + " vx=" + vx + " vy=" + vy 5993 + " maxX=" + maxX + " maxY=" + maxY 5994 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5995 } 5996 5997 // Allow sloppy flings without overscrolling at the edges. 5998 if ((mScrollX == 0 || mScrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 5999 vx = 0; 6000 } 6001 if ((mScrollY == 0 || mScrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6002 vy = 0; 6003 } 6004 6005 if (mOverscrollDistance < mOverflingDistance) { 6006 if (mScrollX == -mOverscrollDistance || mScrollX == maxX + mOverscrollDistance) { 6007 vx = 0; 6008 } 6009 if (mScrollY == -mOverscrollDistance || mScrollY == maxY + mOverscrollDistance) { 6010 vy = 0; 6011 } 6012 } 6013 6014 mLastVelX = vx; 6015 mLastVelY = vy; 6016 mLastVelocity = (float) Math.hypot(vx, vy); 6017 6018 // no horizontal overscroll if the content just fits 6019 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY, 6020 maxX == 0 ? 0 : mOverflingDistance, mOverflingDistance); 6021 // Duration is calculated based on velocity. With range boundaries and overscroll 6022 // we may not know how long the final animation will take. (Hence the deprecation 6023 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6024 // resumes during this effect we will take a performance hit. See computeScroll; 6025 // we resume webcore there when the animation is finished. 6026 final int time = mScroller.getDuration(); 6027 awakenScrollBars(time); 6028 invalidate(); 6029 } 6030 6031 private boolean zoomWithPreview(float scale, boolean updateTextWrapScale) { 6032 float oldScale = mActualScale; 6033 mInitialScrollX = mScrollX; 6034 mInitialScrollY = mScrollY; 6035 6036 // snap to DEFAULT_SCALE if it is close 6037 if (Math.abs(scale - mDefaultScale) < MINIMUM_SCALE_INCREMENT) { 6038 scale = mDefaultScale; 6039 } 6040 6041 setNewZoomScale(scale, updateTextWrapScale, false); 6042 6043 if (oldScale != mActualScale) { 6044 // use mZoomPickerScale to see zoom preview first 6045 mZoomStart = SystemClock.uptimeMillis(); 6046 mInvInitialZoomScale = 1.0f / oldScale; 6047 mInvFinalZoomScale = 1.0f / mActualScale; 6048 mZoomScale = mActualScale; 6049 WebViewCore.pauseUpdatePicture(mWebViewCore); 6050 invalidate(); 6051 return true; 6052 } else { 6053 return false; 6054 } 6055 } 6056 6057 /** 6058 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6059 * in charge of installing this view to the view hierarchy. This view will 6060 * become visible when the user starts scrolling via touch and fade away if 6061 * the user does not interact with it. 6062 * <p/> 6063 * API version 3 introduces a built-in zoom mechanism that is shown 6064 * automatically by the MapView. This is the preferred approach for 6065 * showing the zoom UI. 6066 * 6067 * @deprecated The built-in zoom mechanism is preferred, see 6068 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6069 */ 6070 @Deprecated 6071 public View getZoomControls() { 6072 if (!getSettings().supportZoom()) { 6073 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6074 return null; 6075 } 6076 if (mZoomControls == null) { 6077 mZoomControls = createZoomControls(); 6078 6079 /* 6080 * need to be set to VISIBLE first so that getMeasuredHeight() in 6081 * {@link #onSizeChanged()} can return the measured value for proper 6082 * layout. 6083 */ 6084 mZoomControls.setVisibility(View.VISIBLE); 6085 mZoomControlRunnable = new Runnable() { 6086 public void run() { 6087 6088 /* Don't dismiss the controls if the user has 6089 * focus on them. Wait and check again later. 6090 */ 6091 if (!mZoomControls.hasFocus()) { 6092 mZoomControls.hide(); 6093 } else { 6094 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6095 mPrivateHandler.postDelayed(mZoomControlRunnable, 6096 ZOOM_CONTROLS_TIMEOUT); 6097 } 6098 } 6099 }; 6100 } 6101 return mZoomControls; 6102 } 6103 6104 private ExtendedZoomControls createZoomControls() { 6105 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 6106 , null); 6107 zoomControls.setOnZoomInClickListener(new OnClickListener() { 6108 public void onClick(View v) { 6109 // reset time out 6110 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6111 mPrivateHandler.postDelayed(mZoomControlRunnable, 6112 ZOOM_CONTROLS_TIMEOUT); 6113 zoomIn(); 6114 } 6115 }); 6116 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 6117 public void onClick(View v) { 6118 // reset time out 6119 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6120 mPrivateHandler.postDelayed(mZoomControlRunnable, 6121 ZOOM_CONTROLS_TIMEOUT); 6122 zoomOut(); 6123 } 6124 }); 6125 return zoomControls; 6126 } 6127 6128 /** 6129 * Gets the {@link ZoomButtonsController} which can be used to add 6130 * additional buttons to the zoom controls window. 6131 * 6132 * @return The instance of {@link ZoomButtonsController} used by this class, 6133 * or null if it is unavailable. 6134 * @hide 6135 */ 6136 public ZoomButtonsController getZoomButtonsController() { 6137 if (mZoomButtonsController == null) { 6138 mZoomButtonsController = new ZoomButtonsController(this); 6139 mZoomButtonsController.setOnZoomListener(mZoomListener); 6140 // ZoomButtonsController positions the buttons at the bottom, but in 6141 // the middle. Change their layout parameters so they appear on the 6142 // right. 6143 View controls = mZoomButtonsController.getZoomControls(); 6144 ViewGroup.LayoutParams params = controls.getLayoutParams(); 6145 if (params instanceof FrameLayout.LayoutParams) { 6146 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) params; 6147 frameParams.gravity = Gravity.RIGHT; 6148 } 6149 } 6150 return mZoomButtonsController; 6151 } 6152 6153 /** 6154 * Perform zoom in in the webview 6155 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6156 */ 6157 public boolean zoomIn() { 6158 // TODO: alternatively we can disallow this during draw history mode 6159 switchOutDrawHistory(); 6160 mInZoomOverview = false; 6161 // Center zooming to the center of the screen. 6162 mZoomCenterX = getViewWidth() * .5f; 6163 mZoomCenterY = getViewHeight() * .5f; 6164 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 6165 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 6166 return zoomWithPreview(mActualScale * 1.25f, true); 6167 } 6168 6169 /** 6170 * Perform zoom out in the webview 6171 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6172 */ 6173 public boolean zoomOut() { 6174 // TODO: alternatively we can disallow this during draw history mode 6175 switchOutDrawHistory(); 6176 // Center zooming to the center of the screen. 6177 mZoomCenterX = getViewWidth() * .5f; 6178 mZoomCenterY = getViewHeight() * .5f; 6179 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 6180 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 6181 return zoomWithPreview(mActualScale * 0.8f, true); 6182 } 6183 6184 private void updateSelection() { 6185 if (mNativeClass == 0) { 6186 return; 6187 } 6188 // mLastTouchX and mLastTouchY are the point in the current viewport 6189 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6190 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6191 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6192 contentX + mNavSlop, contentY + mNavSlop); 6193 nativeSelectBestAt(rect); 6194 } 6195 6196 /** 6197 * Scroll the focused text field/area to match the WebTextView 6198 * @param xPercent New x position of the WebTextView from 0 to 1. 6199 * @param y New y position of the WebTextView in view coordinates 6200 */ 6201 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 6202 if (!inEditingMode() || mWebViewCore == null) { 6203 return; 6204 } 6205 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 6206 // Since this position is relative to the top of the text input 6207 // field, we do not need to take the title bar's height into 6208 // consideration. 6209 viewToContentDimension(y), 6210 new Float(xPercent)); 6211 } 6212 6213 /** 6214 * Set our starting point and time for a drag from the WebTextView. 6215 */ 6216 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6217 if (!inEditingMode()) { 6218 return; 6219 } 6220 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 6221 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 6222 mLastTouchTime = eventTime; 6223 if (!mScroller.isFinished()) { 6224 abortAnimation(); 6225 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6226 } 6227 mSnapScrollMode = SNAP_NONE; 6228 mVelocityTracker = VelocityTracker.obtain(); 6229 mTouchMode = TOUCH_DRAG_START_MODE; 6230 } 6231 6232 /** 6233 * Given a motion event from the WebTextView, set its location to our 6234 * coordinates, and handle the event. 6235 */ 6236 /*package*/ boolean textFieldDrag(MotionEvent event) { 6237 if (!inEditingMode()) { 6238 return false; 6239 } 6240 mDragFromTextInput = true; 6241 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6242 (float) (mWebTextView.getTop() - mScrollY)); 6243 boolean result = onTouchEvent(event); 6244 mDragFromTextInput = false; 6245 return result; 6246 } 6247 6248 /** 6249 * Due a touch up from a WebTextView. This will be handled by webkit to 6250 * change the selection. 6251 * @param event MotionEvent in the WebTextView's coordinates. 6252 */ 6253 /*package*/ void touchUpOnTextField(MotionEvent event) { 6254 if (!inEditingMode()) { 6255 return; 6256 } 6257 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6258 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6259 nativeMotionUp(x, y, mNavSlop); 6260 } 6261 6262 /** 6263 * Called when pressing the center key or trackball on a textfield. 6264 */ 6265 /*package*/ void centerKeyPressOnTextField() { 6266 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6267 nativeCursorNodePointer()); 6268 } 6269 6270 private void doShortPress() { 6271 if (mNativeClass == 0) { 6272 return; 6273 } 6274 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6275 return; 6276 } 6277 mTouchMode = TOUCH_DONE_MODE; 6278 switchOutDrawHistory(); 6279 // mLastTouchX and mLastTouchY are the point in the current viewport 6280 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6281 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6282 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6283 WebViewCore.MotionUpData motionUpData = new WebViewCore 6284 .MotionUpData(); 6285 motionUpData.mFrame = nativeCacheHitFramePointer(); 6286 motionUpData.mNode = nativeCacheHitNodePointer(); 6287 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6288 motionUpData.mX = contentX; 6289 motionUpData.mY = contentY; 6290 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6291 motionUpData); 6292 } else { 6293 doMotionUp(contentX, contentY); 6294 } 6295 } 6296 6297 private void doMotionUp(int contentX, int contentY) { 6298 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 6299 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6300 } 6301 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6302 playSoundEffect(SoundEffectConstants.CLICK); 6303 } 6304 } 6305 6306 /* 6307 * Return true if the view (Plugin) is fully visible and maximized inside 6308 * the WebView. 6309 */ 6310 private boolean isPluginFitOnScreen(ViewManager.ChildView view) { 6311 int viewWidth = getViewWidth(); 6312 int viewHeight = getViewHeightWithTitle(); 6313 float scale = Math.min((float) viewWidth / view.width, 6314 (float) viewHeight / view.height); 6315 if (scale < mMinZoomScale) { 6316 scale = mMinZoomScale; 6317 } else if (scale > mMaxZoomScale) { 6318 scale = mMaxZoomScale; 6319 } 6320 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 6321 if (contentToViewX(view.x) >= mScrollX 6322 && contentToViewX(view.x + view.width) <= mScrollX 6323 + viewWidth 6324 && contentToViewY(view.y) >= mScrollY 6325 && contentToViewY(view.y + view.height) <= mScrollY 6326 + viewHeight) { 6327 return true; 6328 } 6329 } 6330 return false; 6331 } 6332 6333 /* 6334 * Maximize and center the rectangle, specified in the document coordinate 6335 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6336 * animated scroll to center it. If the zoom needs to be changed, find the 6337 * zoom center and do a smooth zoom transition. 6338 */ 6339 private void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 6340 int viewWidth = getViewWidth(); 6341 int viewHeight = getViewHeightWithTitle(); 6342 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 6343 / docHeight); 6344 if (scale < mMinZoomScale) { 6345 scale = mMinZoomScale; 6346 } else if (scale > mMaxZoomScale) { 6347 scale = mMaxZoomScale; 6348 } 6349 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 6350 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 6351 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 6352 true, 0); 6353 } else { 6354 float oldScreenX = docX * mActualScale - mScrollX; 6355 float rectViewX = docX * scale; 6356 float rectViewWidth = docWidth * scale; 6357 float newMaxWidth = mContentWidth * scale; 6358 float newScreenX = (viewWidth - rectViewWidth) / 2; 6359 // pin the newX to the WebView 6360 if (newScreenX > rectViewX) { 6361 newScreenX = rectViewX; 6362 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6363 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6364 } 6365 mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale) 6366 / (scale - mActualScale); 6367 float oldScreenY = docY * mActualScale + getTitleHeight() 6368 - mScrollY; 6369 float rectViewY = docY * scale + getTitleHeight(); 6370 float rectViewHeight = docHeight * scale; 6371 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6372 float newScreenY = (viewHeight - rectViewHeight) / 2; 6373 // pin the newY to the WebView 6374 if (newScreenY > rectViewY) { 6375 newScreenY = rectViewY; 6376 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6377 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6378 } 6379 mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale) 6380 / (scale - mActualScale); 6381 zoomWithPreview(scale, false); 6382 } 6383 } 6384 6385 void dismissZoomControl() { 6386 if (mWebViewCore == null) { 6387 // maybe called after WebView's destroy(). As we can't get settings, 6388 // just hide zoom control for both styles. 6389 if (mZoomButtonsController != null) { 6390 mZoomButtonsController.setVisible(false); 6391 } 6392 if (mZoomControls != null) { 6393 mZoomControls.hide(); 6394 } 6395 return; 6396 } 6397 WebSettings settings = getSettings(); 6398 if (settings.getBuiltInZoomControls()) { 6399 if (mZoomButtonsController != null) { 6400 mZoomButtonsController.setVisible(false); 6401 } 6402 } else { 6403 if (mZoomControlRunnable != null) { 6404 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6405 } 6406 if (mZoomControls != null) { 6407 mZoomControls.hide(); 6408 } 6409 } 6410 } 6411 6412 // Rule for double tap: 6413 // 1. if the current scale is not same as the text wrap scale and layout 6414 // algorithm is NARROW_COLUMNS, fit to column; 6415 // 2. if the current state is not overview mode, change to overview mode; 6416 // 3. if the current state is overview mode, change to default scale. 6417 private void doDoubleTap() { 6418 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 6419 return; 6420 } 6421 mZoomCenterX = mLastTouchX; 6422 mZoomCenterY = mLastTouchY; 6423 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 6424 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 6425 WebSettings settings = getSettings(); 6426 settings.setDoubleTapToastCount(0); 6427 // remove the zoom control after double tap 6428 dismissZoomControl(); 6429 ViewManager.ChildView plugin = mViewManager.hitTest(mAnchorX, mAnchorY); 6430 if (plugin != null) { 6431 if (isPluginFitOnScreen(plugin)) { 6432 mInZoomOverview = true; 6433 // Force the titlebar fully reveal in overview mode 6434 if (mScrollY < getTitleHeight()) mScrollY = 0; 6435 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth, 6436 true); 6437 } else { 6438 mInZoomOverview = false; 6439 centerFitRect(plugin.x, plugin.y, plugin.width, plugin.height); 6440 } 6441 return; 6442 } 6443 boolean zoomToDefault = false; 6444 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 6445 && (Math.abs(mActualScale - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT)) { 6446 setNewZoomScale(mActualScale, true, true); 6447 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 6448 if (Math.abs(mActualScale - overviewScale) < MINIMUM_SCALE_INCREMENT) { 6449 mInZoomOverview = true; 6450 } 6451 } else if (!mInZoomOverview) { 6452 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 6453 if (Math.abs(mActualScale - newScale) >= MINIMUM_SCALE_INCREMENT) { 6454 mInZoomOverview = true; 6455 // Force the titlebar fully reveal in overview mode 6456 if (mScrollY < getTitleHeight()) mScrollY = 0; 6457 zoomWithPreview(newScale, true); 6458 } else if (Math.abs(mActualScale - mDefaultScale) >= MINIMUM_SCALE_INCREMENT) { 6459 zoomToDefault = true; 6460 } 6461 } else { 6462 zoomToDefault = true; 6463 } 6464 if (zoomToDefault) { 6465 mInZoomOverview = false; 6466 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 6467 if (left != NO_LEFTEDGE) { 6468 // add a 5pt padding to the left edge. 6469 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 6470 - mScrollX; 6471 // Re-calculate the zoom center so that the new scroll x will be 6472 // on the left edge. 6473 if (viewLeft > 0) { 6474 mZoomCenterX = viewLeft * mDefaultScale 6475 / (mDefaultScale - mActualScale); 6476 } else { 6477 scrollBy(viewLeft, 0); 6478 mZoomCenterX = 0; 6479 } 6480 } 6481 zoomWithPreview(mDefaultScale, true); 6482 } 6483 } 6484 6485 // Called by JNI to handle a touch on a node representing an email address, 6486 // address, or phone number 6487 private void overrideLoading(String url) { 6488 mCallbackProxy.uiOverrideUrlLoading(url); 6489 } 6490 6491 @Override 6492 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6493 boolean result = false; 6494 if (inEditingMode()) { 6495 result = mWebTextView.requestFocus(direction, 6496 previouslyFocusedRect); 6497 } else { 6498 result = super.requestFocus(direction, previouslyFocusedRect); 6499 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6500 // For cases such as GMail, where we gain focus from a direction, 6501 // we want to move to the first available link. 6502 // FIXME: If there are no visible links, we may not want to 6503 int fakeKeyDirection = 0; 6504 switch(direction) { 6505 case View.FOCUS_UP: 6506 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6507 break; 6508 case View.FOCUS_DOWN: 6509 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6510 break; 6511 case View.FOCUS_LEFT: 6512 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6513 break; 6514 case View.FOCUS_RIGHT: 6515 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6516 break; 6517 default: 6518 return result; 6519 } 6520 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6521 navHandledKey(fakeKeyDirection, 1, true, 0); 6522 } 6523 } 6524 } 6525 return result; 6526 } 6527 6528 @Override 6529 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6530 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6531 6532 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6533 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6534 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6535 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6536 6537 int measuredHeight = heightSize; 6538 int measuredWidth = widthSize; 6539 6540 // Grab the content size from WebViewCore. 6541 int contentHeight = contentToViewDimension(mContentHeight); 6542 int contentWidth = contentToViewDimension(mContentWidth); 6543 6544// Log.d(LOGTAG, "------- measure " + heightMode); 6545 6546 if (heightMode != MeasureSpec.EXACTLY) { 6547 mHeightCanMeasure = true; 6548 measuredHeight = contentHeight; 6549 if (heightMode == MeasureSpec.AT_MOST) { 6550 // If we are larger than the AT_MOST height, then our height can 6551 // no longer be measured and we should scroll internally. 6552 if (measuredHeight > heightSize) { 6553 measuredHeight = heightSize; 6554 mHeightCanMeasure = false; 6555 } 6556 } 6557 } else { 6558 mHeightCanMeasure = false; 6559 } 6560 if (mNativeClass != 0) { 6561 nativeSetHeightCanMeasure(mHeightCanMeasure); 6562 } 6563 // For the width, always use the given size unless unspecified. 6564 if (widthMode == MeasureSpec.UNSPECIFIED) { 6565 mWidthCanMeasure = true; 6566 measuredWidth = contentWidth; 6567 } else { 6568 mWidthCanMeasure = false; 6569 } 6570 6571 synchronized (this) { 6572 setMeasuredDimension(measuredWidth, measuredHeight); 6573 } 6574 } 6575 6576 @Override 6577 public boolean requestChildRectangleOnScreen(View child, 6578 Rect rect, 6579 boolean immediate) { 6580 rect.offset(child.getLeft() - child.getScrollX(), 6581 child.getTop() - child.getScrollY()); 6582 6583 Rect content = new Rect(viewToContentX(mScrollX), 6584 viewToContentY(mScrollY), 6585 viewToContentX(mScrollX + getWidth() 6586 - getVerticalScrollbarWidth()), 6587 viewToContentY(mScrollY + getViewHeightWithTitle())); 6588 content = nativeSubtractLayers(content); 6589 int screenTop = contentToViewY(content.top); 6590 int screenBottom = contentToViewY(content.bottom); 6591 int height = screenBottom - screenTop; 6592 int scrollYDelta = 0; 6593 6594 if (rect.bottom > screenBottom) { 6595 int oneThirdOfScreenHeight = height / 3; 6596 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6597 // If the rectangle is too tall to fit in the bottom two thirds 6598 // of the screen, place it at the top. 6599 scrollYDelta = rect.top - screenTop; 6600 } else { 6601 // If the rectangle will still fit on screen, we want its 6602 // top to be in the top third of the screen. 6603 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6604 } 6605 } else if (rect.top < screenTop) { 6606 scrollYDelta = rect.top - screenTop; 6607 } 6608 6609 int screenLeft = contentToViewX(content.left); 6610 int screenRight = contentToViewX(content.right); 6611 int width = screenRight - screenLeft; 6612 int scrollXDelta = 0; 6613 6614 if (rect.right > screenRight && rect.left > screenLeft) { 6615 if (rect.width() > width) { 6616 scrollXDelta += (rect.left - screenLeft); 6617 } else { 6618 scrollXDelta += (rect.right - screenRight); 6619 } 6620 } else if (rect.left < screenLeft) { 6621 scrollXDelta -= (screenLeft - rect.left); 6622 } 6623 6624 if ((scrollYDelta | scrollXDelta) != 0) { 6625 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6626 } 6627 6628 return false; 6629 } 6630 6631 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6632 String replace, int newStart, int newEnd) { 6633 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6634 arg.mReplace = replace; 6635 arg.mNewStart = newStart; 6636 arg.mNewEnd = newEnd; 6637 mTextGeneration++; 6638 arg.mTextGeneration = mTextGeneration; 6639 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6640 } 6641 6642 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6643 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6644 arg.mEvent = event; 6645 arg.mCurrentText = currentText; 6646 // Increase our text generation number, and pass it to webcore thread 6647 mTextGeneration++; 6648 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6649 // WebKit's document state is not saved until about to leave the page. 6650 // To make sure the host application, like Browser, has the up to date 6651 // document state when it goes to background, we force to save the 6652 // document state. 6653 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6654 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6655 cursorData(), 1000); 6656 } 6657 6658 /* package */ synchronized WebViewCore getWebViewCore() { 6659 return mWebViewCore; 6660 } 6661 6662 //------------------------------------------------------------------------- 6663 // Methods can be called from a separate thread, like WebViewCore 6664 // If it needs to call the View system, it has to send message. 6665 //------------------------------------------------------------------------- 6666 6667 /** 6668 * General handler to receive message coming from webkit thread 6669 */ 6670 class PrivateHandler extends Handler { 6671 @Override 6672 public void handleMessage(Message msg) { 6673 // exclude INVAL_RECT_MSG_ID since it is frequently output 6674 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6675 if (msg.what >= FIRST_PRIVATE_MSG_ID 6676 && msg.what <= LAST_PRIVATE_MSG_ID) { 6677 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6678 - FIRST_PRIVATE_MSG_ID]); 6679 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6680 && msg.what <= LAST_PACKAGE_MSG_ID) { 6681 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6682 - FIRST_PACKAGE_MSG_ID]); 6683 } else { 6684 Log.v(LOGTAG, Integer.toString(msg.what)); 6685 } 6686 } 6687 if (mWebViewCore == null) { 6688 // after WebView's destroy() is called, skip handling messages. 6689 return; 6690 } 6691 switch (msg.what) { 6692 case REMEMBER_PASSWORD: { 6693 mDatabase.setUsernamePassword( 6694 msg.getData().getString("host"), 6695 msg.getData().getString("username"), 6696 msg.getData().getString("password")); 6697 ((Message) msg.obj).sendToTarget(); 6698 break; 6699 } 6700 case NEVER_REMEMBER_PASSWORD: { 6701 mDatabase.setUsernamePassword( 6702 msg.getData().getString("host"), null, null); 6703 ((Message) msg.obj).sendToTarget(); 6704 break; 6705 } 6706 case PREVENT_DEFAULT_TIMEOUT: { 6707 // if timeout happens, cancel it so that it won't block UI 6708 // to continue handling touch events 6709 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6710 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6711 || (msg.arg1 == MotionEvent.ACTION_MOVE 6712 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6713 cancelWebCoreTouchEvent( 6714 viewToContentX((int) mLastTouchX + mScrollX), 6715 viewToContentY((int) mLastTouchY + mScrollY), 6716 true); 6717 } 6718 break; 6719 } 6720 case SWITCH_TO_SHORTPRESS: { 6721 if (mTouchMode == TOUCH_INIT_MODE) { 6722 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6723 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6724 updateSelection(); 6725 } else { 6726 // set to TOUCH_SHORTPRESS_MODE so that it won't 6727 // trigger double tap any more 6728 mTouchMode = TOUCH_SHORTPRESS_MODE; 6729 } 6730 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6731 mTouchMode = TOUCH_DONE_MODE; 6732 } 6733 break; 6734 } 6735 case SWITCH_TO_LONGPRESS: { 6736 if (inFullScreenMode() || mDeferTouchProcess) { 6737 TouchEventData ted = new TouchEventData(); 6738 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6739 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6740 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6741 // metaState for long press is tricky. Should it be the 6742 // state when the press started or when the press was 6743 // released? Or some intermediary key state? For 6744 // simplicity for now, we don't set it. 6745 ted.mMetaState = 0; 6746 ted.mReprocess = mDeferTouchProcess; 6747 if (mDeferTouchProcess) { 6748 ted.mViewX = mLastTouchX; 6749 ted.mViewY = mLastTouchY; 6750 } 6751 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6752 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6753 mTouchMode = TOUCH_DONE_MODE; 6754 performLongClick(); 6755 rebuildWebTextView(); 6756 } 6757 break; 6758 } 6759 case RELEASE_SINGLE_TAP: { 6760 doShortPress(); 6761 break; 6762 } 6763 case SCROLL_BY_MSG_ID: 6764 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6765 break; 6766 case SYNC_SCROLL_TO_MSG_ID: 6767 if (mUserScroll) { 6768 // if user has scrolled explicitly, don't sync the 6769 // scroll position any more 6770 mUserScroll = false; 6771 break; 6772 } 6773 // fall through 6774 case SCROLL_TO_MSG_ID: 6775 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6776 // if we can't scroll to the exact position due to pin, 6777 // send a message to WebCore to re-scroll when we get a 6778 // new picture 6779 mUserScroll = false; 6780 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6781 msg.arg1, msg.arg2); 6782 } 6783 break; 6784 case SPAWN_SCROLL_TO_MSG_ID: 6785 spawnContentScrollTo(msg.arg1, msg.arg2); 6786 break; 6787 case UPDATE_ZOOM_RANGE: { 6788 WebViewCore.RestoreState restoreState 6789 = (WebViewCore.RestoreState) msg.obj; 6790 // mScrollX contains the new minPrefWidth 6791 updateZoomRange(restoreState, getViewWidth(), 6792 restoreState.mScrollX, false); 6793 break; 6794 } 6795 case NEW_PICTURE_MSG_ID: { 6796 // If we've previously delayed deleting a root 6797 // layer, do it now. 6798 if (mDelayedDeleteRootLayer) { 6799 mDelayedDeleteRootLayer = false; 6800 nativeSetRootLayer(0); 6801 } 6802 WebSettings settings = mWebViewCore.getSettings(); 6803 // called for new content 6804 final int viewWidth = getViewWidth(); 6805 final WebViewCore.DrawData draw = 6806 (WebViewCore.DrawData) msg.obj; 6807 final Point viewSize = draw.mViewPoint; 6808 boolean useWideViewport = settings.getUseWideViewPort(); 6809 WebViewCore.RestoreState restoreState = draw.mRestoreState; 6810 boolean hasRestoreState = restoreState != null; 6811 if (hasRestoreState) { 6812 updateZoomRange(restoreState, viewSize.x, 6813 draw.mMinPrefWidth, true); 6814 if (!mDrawHistory) { 6815 mInZoomOverview = false; 6816 6817 if (mInitialScaleInPercent > 0) { 6818 setNewZoomScale(mInitialScaleInPercent / 100.0f, 6819 mInitialScaleInPercent != mTextWrapScale * 100, 6820 false); 6821 } else if (restoreState.mViewScale > 0) { 6822 mTextWrapScale = restoreState.mTextWrapScale; 6823 setNewZoomScale(restoreState.mViewScale, false, 6824 false); 6825 } else { 6826 mInZoomOverview = useWideViewport 6827 && settings.getLoadWithOverviewMode(); 6828 float scale; 6829 if (mInZoomOverview) { 6830 scale = (float) viewWidth 6831 / DEFAULT_VIEWPORT_WIDTH; 6832 } else { 6833 scale = restoreState.mTextWrapScale; 6834 } 6835 setNewZoomScale(scale, Math.abs(scale 6836 - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT, 6837 false); 6838 } 6839 setContentScrollTo(restoreState.mScrollX, 6840 restoreState.mScrollY); 6841 // As we are on a new page, remove the WebTextView. This 6842 // is necessary for page loads driven by webkit, and in 6843 // particular when the user was on a password field, so 6844 // the WebTextView was visible. 6845 clearTextEntry(false); 6846 // update the zoom buttons as the scale can be changed 6847 if (getSettings().getBuiltInZoomControls()) { 6848 updateZoomButtonsEnabled(); 6849 } 6850 } 6851 } 6852 // We update the layout (i.e. request a layout from the 6853 // view system) if the last view size that we sent to 6854 // WebCore matches the view size of the picture we just 6855 // received in the fixed dimension. 6856 final boolean updateLayout = viewSize.x == mLastWidthSent 6857 && viewSize.y == mLastHeightSent; 6858 recordNewContentSize(draw.mWidthHeight.x, 6859 draw.mWidthHeight.y 6860 + (mFindIsUp ? mFindHeight : 0), updateLayout); 6861 if (DebugFlags.WEB_VIEW) { 6862 Rect b = draw.mInvalRegion.getBounds(); 6863 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6864 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6865 } 6866 invalidateContentRect(draw.mInvalRegion.getBounds()); 6867 if (mPictureListener != null) { 6868 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6869 } 6870 if (useWideViewport) { 6871 // limit mZoomOverviewWidth upper bound to 6872 // sMaxViewportWidth so that if the page doesn't behave 6873 // well, the WebView won't go insane. limit the lower 6874 // bound to match the default scale for mobile sites. 6875 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 6876 .max((int) (viewWidth / mDefaultScale), Math 6877 .max(draw.mMinPrefWidth, 6878 draw.mViewPoint.x))); 6879 } 6880 if (!mMinZoomScaleFixed) { 6881 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 6882 } 6883 if (!mDrawHistory && mInZoomOverview) { 6884 // fit the content width to the current view. Ignore 6885 // the rounding error case. 6886 if (Math.abs((viewWidth * mInvActualScale) 6887 - mZoomOverviewWidth) > 1) { 6888 setNewZoomScale((float) viewWidth 6889 / mZoomOverviewWidth, Math.abs(mActualScale 6890 - mTextWrapScale) < MINIMUM_SCALE_INCREMENT, 6891 false); 6892 } 6893 } 6894 if (draw.mFocusSizeChanged && inEditingMode()) { 6895 mFocusSizeChanged = true; 6896 } 6897 if (hasRestoreState) { 6898 mViewManager.postReadyToDrawAll(); 6899 } 6900 break; 6901 } 6902 case WEBCORE_INITIALIZED_MSG_ID: 6903 // nativeCreate sets mNativeClass to a non-zero value 6904 nativeCreate(msg.arg1); 6905 break; 6906 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6907 // Make sure that the textfield is currently focused 6908 // and representing the same node as the pointer. 6909 if (inEditingMode() && 6910 mWebTextView.isSameTextField(msg.arg1)) { 6911 if (msg.getData().getBoolean("password")) { 6912 Spannable text = (Spannable) mWebTextView.getText(); 6913 int start = Selection.getSelectionStart(text); 6914 int end = Selection.getSelectionEnd(text); 6915 mWebTextView.setInPassword(true); 6916 // Restore the selection, which may have been 6917 // ruined by setInPassword. 6918 Spannable pword = 6919 (Spannable) mWebTextView.getText(); 6920 Selection.setSelection(pword, start, end); 6921 // If the text entry has created more events, ignore 6922 // this one. 6923 } else if (msg.arg2 == mTextGeneration) { 6924 mWebTextView.setTextAndKeepSelection( 6925 (String) msg.obj); 6926 } 6927 } 6928 break; 6929 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6930 displaySoftKeyboard(true); 6931 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6932 (WebViewCore.TextSelectionData) msg.obj); 6933 break; 6934 case UPDATE_TEXT_SELECTION_MSG_ID: 6935 // If no textfield was in focus, and the user touched one, 6936 // causing it to send this message, then WebTextView has not 6937 // been set up yet. Rebuild it so it can set its selection. 6938 rebuildWebTextView(); 6939 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6940 (WebViewCore.TextSelectionData) msg.obj); 6941 break; 6942 case RETURN_LABEL: 6943 if (inEditingMode() 6944 && mWebTextView.isSameTextField(msg.arg1)) { 6945 mWebTextView.setHint((String) msg.obj); 6946 InputMethodManager imm 6947 = InputMethodManager.peekInstance(); 6948 // The hint is propagated to the IME in 6949 // onCreateInputConnection. If the IME is already 6950 // active, restart it so that its hint text is updated. 6951 if (imm != null && imm.isActive(mWebTextView)) { 6952 imm.restartInput(mWebTextView); 6953 } 6954 } 6955 break; 6956 case MOVE_OUT_OF_PLUGIN: 6957 navHandledKey(msg.arg1, 1, false, 0); 6958 break; 6959 case UPDATE_TEXT_ENTRY_MSG_ID: 6960 // this is sent after finishing resize in WebViewCore. Make 6961 // sure the text edit box is still on the screen. 6962 if (inEditingMode() && nativeCursorIsTextInput()) { 6963 mWebTextView.bringIntoView(); 6964 rebuildWebTextView(); 6965 } 6966 break; 6967 case CLEAR_TEXT_ENTRY: 6968 clearTextEntry(false); 6969 break; 6970 case INVAL_RECT_MSG_ID: { 6971 Rect r = (Rect)msg.obj; 6972 if (r == null) { 6973 invalidate(); 6974 } else { 6975 // we need to scale r from content into view coords, 6976 // which viewInvalidate() does for us 6977 viewInvalidate(r.left, r.top, r.right, r.bottom); 6978 } 6979 break; 6980 } 6981 case IMMEDIATE_REPAINT_MSG_ID: { 6982 invalidate(); 6983 break; 6984 } 6985 case SET_ROOT_LAYER_MSG_ID: { 6986 if (0 == msg.arg1) { 6987 // Null indicates deleting the old layer, but 6988 // don't actually do so until we've got the 6989 // new page to display. 6990 mDelayedDeleteRootLayer = true; 6991 } else { 6992 mDelayedDeleteRootLayer = false; 6993 nativeSetRootLayer(msg.arg1); 6994 invalidate(); 6995 } 6996 break; 6997 } 6998 case REQUEST_FORM_DATA: 6999 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7000 if (mWebTextView.isSameTextField(msg.arg1)) { 7001 mWebTextView.setAdapterCustom(adapter); 7002 } 7003 break; 7004 case RESUME_WEBCORE_PRIORITY: 7005 WebViewCore.resumePriority(); 7006 WebViewCore.resumeUpdatePicture(mWebViewCore); 7007 break; 7008 7009 case LONG_PRESS_CENTER: 7010 // as this is shared by keydown and trackballdown, reset all 7011 // the states 7012 mGotCenterDown = false; 7013 mTrackballDown = false; 7014 performLongClick(); 7015 break; 7016 7017 case WEBCORE_NEED_TOUCH_EVENTS: 7018 mForwardTouchEvents = (msg.arg1 != 0); 7019 break; 7020 7021 case PREVENT_TOUCH_ID: 7022 if (inFullScreenMode()) { 7023 break; 7024 } 7025 if (msg.obj == null) { 7026 if (msg.arg1 == MotionEvent.ACTION_DOWN 7027 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7028 // if prevent default is called from WebCore, UI 7029 // will not handle the rest of the touch events any 7030 // more. 7031 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7032 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7033 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7034 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7035 // the return for the first ACTION_MOVE will decide 7036 // whether UI will handle touch or not. Currently no 7037 // support for alternating prevent default 7038 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7039 : PREVENT_DEFAULT_NO; 7040 } 7041 } else if (msg.arg2 == 0) { 7042 // prevent default is not called in WebCore, so the 7043 // message needs to be reprocessed in UI 7044 TouchEventData ted = (TouchEventData) msg.obj; 7045 switch (ted.mAction) { 7046 case MotionEvent.ACTION_DOWN: 7047 mLastDeferTouchX = ted.mViewX; 7048 mLastDeferTouchY = ted.mViewY; 7049 mDeferTouchMode = TOUCH_INIT_MODE; 7050 break; 7051 case MotionEvent.ACTION_MOVE: { 7052 // no snapping in defer process 7053 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7054 mDeferTouchMode = TOUCH_DRAG_MODE; 7055 mLastDeferTouchX = ted.mViewX; 7056 mLastDeferTouchY = ted.mViewY; 7057 startDrag(); 7058 } 7059 int deltaX = pinLocX((int) (mScrollX 7060 + mLastDeferTouchX - ted.mViewX)) 7061 - mScrollX; 7062 int deltaY = pinLocY((int) (mScrollY 7063 + mLastDeferTouchY - ted.mViewY)) 7064 - mScrollY; 7065 doDrag(deltaX, deltaY); 7066 if (deltaX != 0) mLastDeferTouchX = ted.mViewX; 7067 if (deltaY != 0) mLastDeferTouchY = ted.mViewY; 7068 break; 7069 } 7070 case MotionEvent.ACTION_UP: 7071 case MotionEvent.ACTION_CANCEL: 7072 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7073 // no fling in defer process 7074 mScroller.springback(mScrollX, mScrollY, 0, 7075 computeMaxScrollX(), 0, 7076 computeMaxScrollY()); 7077 invalidate(); 7078 WebViewCore.resumePriority(); 7079 WebViewCore.resumeUpdatePicture(mWebViewCore); 7080 } 7081 mDeferTouchMode = TOUCH_DONE_MODE; 7082 break; 7083 case WebViewCore.ACTION_DOUBLETAP: 7084 // doDoubleTap() needs mLastTouchX/Y as anchor 7085 mLastTouchX = ted.mViewX; 7086 mLastTouchY = ted.mViewY; 7087 doDoubleTap(); 7088 mDeferTouchMode = TOUCH_DONE_MODE; 7089 break; 7090 case WebViewCore.ACTION_LONGPRESS: 7091 HitTestResult hitTest = getHitTestResult(); 7092 if (hitTest != null && hitTest.mType 7093 != HitTestResult.UNKNOWN_TYPE) { 7094 performLongClick(); 7095 rebuildWebTextView(); 7096 } 7097 mDeferTouchMode = TOUCH_DONE_MODE; 7098 break; 7099 } 7100 } 7101 break; 7102 7103 case REQUEST_KEYBOARD: 7104 if (msg.arg1 == 0) { 7105 hideSoftKeyboard(); 7106 } else { 7107 displaySoftKeyboard(false); 7108 } 7109 break; 7110 7111 case FIND_AGAIN: 7112 // Ignore if find has been dismissed. 7113 if (mFindIsUp) { 7114 findAll(mLastFind); 7115 } 7116 break; 7117 7118 case DRAG_HELD_MOTIONLESS: 7119 mHeldMotionless = MOTIONLESS_TRUE; 7120 invalidate(); 7121 // fall through to keep scrollbars awake 7122 7123 case AWAKEN_SCROLL_BARS: 7124 if (mTouchMode == TOUCH_DRAG_MODE 7125 && mHeldMotionless == MOTIONLESS_TRUE) { 7126 awakenScrollBars(ViewConfiguration 7127 .getScrollDefaultDelay(), false); 7128 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7129 .obtainMessage(AWAKEN_SCROLL_BARS), 7130 ViewConfiguration.getScrollDefaultDelay()); 7131 } 7132 break; 7133 7134 case DO_MOTION_UP: 7135 doMotionUp(msg.arg1, msg.arg2); 7136 break; 7137 7138 case SHOW_FULLSCREEN: { 7139 View view = (View) msg.obj; 7140 int npp = msg.arg1; 7141 7142 if (mFullScreenHolder != null) { 7143 Log.w(LOGTAG, "Should not have another full screen."); 7144 mFullScreenHolder.dismiss(); 7145 } 7146 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7147 mFullScreenHolder.setContentView(view); 7148 mFullScreenHolder.setCancelable(false); 7149 mFullScreenHolder.setCanceledOnTouchOutside(false); 7150 mFullScreenHolder.show(); 7151 7152 break; 7153 } 7154 case HIDE_FULLSCREEN: 7155 if (inFullScreenMode()) { 7156 mFullScreenHolder.dismiss(); 7157 mFullScreenHolder = null; 7158 } 7159 break; 7160 7161 case DOM_FOCUS_CHANGED: 7162 if (inEditingMode()) { 7163 nativeClearCursor(); 7164 rebuildWebTextView(); 7165 } 7166 break; 7167 7168 case SHOW_RECT_MSG_ID: { 7169 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7170 int x = mScrollX; 7171 int left = contentToViewX(data.mLeft); 7172 int width = contentToViewDimension(data.mWidth); 7173 int maxWidth = contentToViewDimension(data.mContentWidth); 7174 int viewWidth = getViewWidth(); 7175 if (width < viewWidth) { 7176 // center align 7177 x += left + width / 2 - mScrollX - viewWidth / 2; 7178 } else { 7179 x += (int) (left + data.mXPercentInDoc * width 7180 - mScrollX - data.mXPercentInView * viewWidth); 7181 } 7182 if (DebugFlags.WEB_VIEW) { 7183 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7184 width + ",maxWidth=" + maxWidth + 7185 ",viewWidth=" + viewWidth + ",x=" 7186 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7187 ",xPercentInView=" + data.mXPercentInView+ ")"); 7188 } 7189 // use the passing content width to cap x as the current 7190 // mContentWidth may not be updated yet 7191 x = Math.max(0, 7192 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7193 int top = contentToViewY(data.mTop); 7194 int height = contentToViewDimension(data.mHeight); 7195 int maxHeight = contentToViewDimension(data.mContentHeight); 7196 int viewHeight = getViewHeight(); 7197 int y = (int) (top + data.mYPercentInDoc * height - 7198 data.mYPercentInView * viewHeight); 7199 if (DebugFlags.WEB_VIEW) { 7200 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7201 height + ",maxHeight=" + maxHeight + 7202 ",viewHeight=" + viewHeight + ",y=" 7203 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7204 ",yPercentInView=" + data.mYPercentInView+ ")"); 7205 } 7206 // use the passing content height to cap y as the current 7207 // mContentHeight may not be updated yet 7208 y = Math.max(0, 7209 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7210 // We need to take into account the visible title height 7211 // when scrolling since y is an absolute view position. 7212 y = Math.max(0, y - getVisibleTitleHeight()); 7213 scrollTo(x, y); 7214 } 7215 break; 7216 7217 case CENTER_FIT_RECT: 7218 Rect r = (Rect)msg.obj; 7219 mInZoomOverview = false; 7220 centerFitRect(r.left, r.top, r.width(), r.height()); 7221 break; 7222 7223 case SET_SCROLLBAR_MODES: 7224 mHorizontalScrollBarMode = msg.arg1; 7225 mVerticalScrollBarMode = msg.arg2; 7226 break; 7227 7228 default: 7229 super.handleMessage(msg); 7230 break; 7231 } 7232 } 7233 } 7234 7235 /** 7236 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7237 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7238 */ 7239 private void updateTextSelectionFromMessage(int nodePointer, 7240 int textGeneration, WebViewCore.TextSelectionData data) { 7241 if (inEditingMode() 7242 && mWebTextView.isSameTextField(nodePointer) 7243 && textGeneration == mTextGeneration) { 7244 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7245 } 7246 } 7247 7248 // Class used to use a dropdown for a <select> element 7249 private class InvokeListBox implements Runnable { 7250 // Whether the listbox allows multiple selection. 7251 private boolean mMultiple; 7252 // Passed in to a list with multiple selection to tell 7253 // which items are selected. 7254 private int[] mSelectedArray; 7255 // Passed in to a list with single selection to tell 7256 // where the initial selection is. 7257 private int mSelection; 7258 7259 private Container[] mContainers; 7260 7261 // Need these to provide stable ids to my ArrayAdapter, 7262 // which normally does not have stable ids. (Bug 1250098) 7263 private class Container extends Object { 7264 /** 7265 * Possible values for mEnabled. Keep in sync with OptionStatus in 7266 * WebViewCore.cpp 7267 */ 7268 final static int OPTGROUP = -1; 7269 final static int OPTION_DISABLED = 0; 7270 final static int OPTION_ENABLED = 1; 7271 7272 String mString; 7273 int mEnabled; 7274 int mId; 7275 7276 public String toString() { 7277 return mString; 7278 } 7279 } 7280 7281 /** 7282 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7283 * and allow filtering. 7284 */ 7285 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7286 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7287 super(context, 7288 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7289 com.android.internal.R.layout.select_dialog_singlechoice, 7290 objects); 7291 } 7292 7293 @Override 7294 public View getView(int position, View convertView, 7295 ViewGroup parent) { 7296 // Always pass in null so that we will get a new CheckedTextView 7297 // Otherwise, an item which was previously used as an <optgroup> 7298 // element (i.e. has no check), could get used as an <option> 7299 // element, which needs a checkbox/radio, but it would not have 7300 // one. 7301 convertView = super.getView(position, null, parent); 7302 Container c = item(position); 7303 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7304 // ListView does not draw dividers between disabled and 7305 // enabled elements. Use a LinearLayout to provide dividers 7306 LinearLayout layout = new LinearLayout(mContext); 7307 layout.setOrientation(LinearLayout.VERTICAL); 7308 if (position > 0) { 7309 View dividerTop = new View(mContext); 7310 dividerTop.setBackgroundResource( 7311 android.R.drawable.divider_horizontal_bright); 7312 layout.addView(dividerTop); 7313 } 7314 7315 if (Container.OPTGROUP == c.mEnabled) { 7316 // Currently select_dialog_multichoice and 7317 // select_dialog_singlechoice are CheckedTextViews. If 7318 // that changes, the class cast will no longer be valid. 7319 Assert.assertTrue( 7320 convertView instanceof CheckedTextView); 7321 ((CheckedTextView) convertView).setCheckMarkDrawable( 7322 null); 7323 } else { 7324 // c.mEnabled == Container.OPTION_DISABLED 7325 // Draw the disabled element in a disabled state. 7326 convertView.setEnabled(false); 7327 } 7328 7329 layout.addView(convertView); 7330 if (position < getCount() - 1) { 7331 View dividerBottom = new View(mContext); 7332 dividerBottom.setBackgroundResource( 7333 android.R.drawable.divider_horizontal_bright); 7334 layout.addView(dividerBottom); 7335 } 7336 return layout; 7337 } 7338 return convertView; 7339 } 7340 7341 @Override 7342 public boolean hasStableIds() { 7343 // AdapterView's onChanged method uses this to determine whether 7344 // to restore the old state. Return false so that the old (out 7345 // of date) state does not replace the new, valid state. 7346 return false; 7347 } 7348 7349 private Container item(int position) { 7350 if (position < 0 || position >= getCount()) { 7351 return null; 7352 } 7353 return (Container) getItem(position); 7354 } 7355 7356 @Override 7357 public long getItemId(int position) { 7358 Container item = item(position); 7359 if (item == null) { 7360 return -1; 7361 } 7362 return item.mId; 7363 } 7364 7365 @Override 7366 public boolean areAllItemsEnabled() { 7367 return false; 7368 } 7369 7370 @Override 7371 public boolean isEnabled(int position) { 7372 Container item = item(position); 7373 if (item == null) { 7374 return false; 7375 } 7376 return Container.OPTION_ENABLED == item.mEnabled; 7377 } 7378 } 7379 7380 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7381 mMultiple = true; 7382 mSelectedArray = selected; 7383 7384 int length = array.length; 7385 mContainers = new Container[length]; 7386 for (int i = 0; i < length; i++) { 7387 mContainers[i] = new Container(); 7388 mContainers[i].mString = array[i]; 7389 mContainers[i].mEnabled = enabled[i]; 7390 mContainers[i].mId = i; 7391 } 7392 } 7393 7394 private InvokeListBox(String[] array, int[] enabled, int selection) { 7395 mSelection = selection; 7396 mMultiple = false; 7397 7398 int length = array.length; 7399 mContainers = new Container[length]; 7400 for (int i = 0; i < length; i++) { 7401 mContainers[i] = new Container(); 7402 mContainers[i].mString = array[i]; 7403 mContainers[i].mEnabled = enabled[i]; 7404 mContainers[i].mId = i; 7405 } 7406 } 7407 7408 /* 7409 * Whenever the data set changes due to filtering, this class ensures 7410 * that the checked item remains checked. 7411 */ 7412 private class SingleDataSetObserver extends DataSetObserver { 7413 private long mCheckedId; 7414 private ListView mListView; 7415 private Adapter mAdapter; 7416 7417 /* 7418 * Create a new observer. 7419 * @param id The ID of the item to keep checked. 7420 * @param l ListView for getting and clearing the checked states 7421 * @param a Adapter for getting the IDs 7422 */ 7423 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7424 mCheckedId = id; 7425 mListView = l; 7426 mAdapter = a; 7427 } 7428 7429 public void onChanged() { 7430 // The filter may have changed which item is checked. Find the 7431 // item that the ListView thinks is checked. 7432 int position = mListView.getCheckedItemPosition(); 7433 long id = mAdapter.getItemId(position); 7434 if (mCheckedId != id) { 7435 // Clear the ListView's idea of the checked item, since 7436 // it is incorrect 7437 mListView.clearChoices(); 7438 // Search for mCheckedId. If it is in the filtered list, 7439 // mark it as checked 7440 int count = mAdapter.getCount(); 7441 for (int i = 0; i < count; i++) { 7442 if (mAdapter.getItemId(i) == mCheckedId) { 7443 mListView.setItemChecked(i, true); 7444 break; 7445 } 7446 } 7447 } 7448 } 7449 7450 public void onInvalidate() {} 7451 } 7452 7453 public void run() { 7454 final ListView listView = (ListView) LayoutInflater.from(mContext) 7455 .inflate(com.android.internal.R.layout.select_dialog, null); 7456 final MyArrayListAdapter adapter = new 7457 MyArrayListAdapter(mContext, mContainers, mMultiple); 7458 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7459 .setView(listView).setCancelable(true) 7460 .setInverseBackgroundForced(true); 7461 7462 if (mMultiple) { 7463 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7464 public void onClick(DialogInterface dialog, int which) { 7465 mWebViewCore.sendMessage( 7466 EventHub.LISTBOX_CHOICES, 7467 adapter.getCount(), 0, 7468 listView.getCheckedItemPositions()); 7469 }}); 7470 b.setNegativeButton(android.R.string.cancel, 7471 new DialogInterface.OnClickListener() { 7472 public void onClick(DialogInterface dialog, int which) { 7473 mWebViewCore.sendMessage( 7474 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7475 }}); 7476 } 7477 final AlertDialog dialog = b.create(); 7478 listView.setAdapter(adapter); 7479 listView.setFocusableInTouchMode(true); 7480 // There is a bug (1250103) where the checks in a ListView with 7481 // multiple items selected are associated with the positions, not 7482 // the ids, so the items do not properly retain their checks when 7483 // filtered. Do not allow filtering on multiple lists until 7484 // that bug is fixed. 7485 7486 listView.setTextFilterEnabled(!mMultiple); 7487 if (mMultiple) { 7488 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7489 int length = mSelectedArray.length; 7490 for (int i = 0; i < length; i++) { 7491 listView.setItemChecked(mSelectedArray[i], true); 7492 } 7493 } else { 7494 listView.setOnItemClickListener(new OnItemClickListener() { 7495 public void onItemClick(AdapterView parent, View v, 7496 int position, long id) { 7497 mWebViewCore.sendMessage( 7498 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 7499 dialog.dismiss(); 7500 } 7501 }); 7502 if (mSelection != -1) { 7503 listView.setSelection(mSelection); 7504 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7505 listView.setItemChecked(mSelection, true); 7506 DataSetObserver observer = new SingleDataSetObserver( 7507 adapter.getItemId(mSelection), listView, adapter); 7508 adapter.registerDataSetObserver(observer); 7509 } 7510 } 7511 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7512 public void onCancel(DialogInterface dialog) { 7513 mWebViewCore.sendMessage( 7514 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7515 } 7516 }); 7517 dialog.show(); 7518 } 7519 } 7520 7521 /* 7522 * Request a dropdown menu for a listbox with multiple selection. 7523 * 7524 * @param array Labels for the listbox. 7525 * @param enabledArray State for each element in the list. See static 7526 * integers in Container class. 7527 * @param selectedArray Which positions are initally selected. 7528 */ 7529 void requestListBox(String[] array, int[] enabledArray, int[] 7530 selectedArray) { 7531 mPrivateHandler.post( 7532 new InvokeListBox(array, enabledArray, selectedArray)); 7533 } 7534 7535 private void updateZoomRange(WebViewCore.RestoreState restoreState, 7536 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 7537 if (restoreState.mMinScale == 0) { 7538 if (restoreState.mMobileSite) { 7539 if (minPrefWidth > Math.max(0, viewWidth)) { 7540 mMinZoomScale = (float) viewWidth / minPrefWidth; 7541 mMinZoomScaleFixed = false; 7542 if (updateZoomOverview) { 7543 WebSettings settings = getSettings(); 7544 mInZoomOverview = settings.getUseWideViewPort() && 7545 settings.getLoadWithOverviewMode(); 7546 } 7547 } else { 7548 mMinZoomScale = restoreState.mDefaultScale; 7549 mMinZoomScaleFixed = true; 7550 } 7551 } else { 7552 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 7553 mMinZoomScaleFixed = false; 7554 } 7555 } else { 7556 mMinZoomScale = restoreState.mMinScale; 7557 mMinZoomScaleFixed = true; 7558 } 7559 if (restoreState.mMaxScale == 0) { 7560 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 7561 } else { 7562 mMaxZoomScale = restoreState.mMaxScale; 7563 } 7564 } 7565 7566 /* 7567 * Request a dropdown menu for a listbox with single selection or a single 7568 * <select> element. 7569 * 7570 * @param array Labels for the listbox. 7571 * @param enabledArray State for each element in the list. See static 7572 * integers in Container class. 7573 * @param selection Which position is initally selected. 7574 */ 7575 void requestListBox(String[] array, int[] enabledArray, int selection) { 7576 mPrivateHandler.post( 7577 new InvokeListBox(array, enabledArray, selection)); 7578 } 7579 7580 // called by JNI 7581 private void sendMoveFocus(int frame, int node) { 7582 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7583 new WebViewCore.CursorData(frame, node, 0, 0)); 7584 } 7585 7586 // called by JNI 7587 private void sendMoveMouse(int frame, int node, int x, int y) { 7588 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7589 new WebViewCore.CursorData(frame, node, x, y)); 7590 } 7591 7592 /* 7593 * Send a mouse move event to the webcore thread. 7594 * 7595 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7596 * which wants key events, but it is not the focus. This 7597 * will make the visual appear as though nothing is in 7598 * focus. Remove the WebTextView, if present, and stop 7599 * drawing the blinking caret. 7600 * called by JNI 7601 */ 7602 private void sendMoveMouseIfLatest(boolean removeFocus) { 7603 if (removeFocus) { 7604 clearTextEntry(true); 7605 } 7606 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7607 cursorData()); 7608 } 7609 7610 // called by JNI 7611 private void sendMotionUp(int touchGeneration, 7612 int frame, int node, int x, int y) { 7613 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7614 touchUpData.mMoveGeneration = touchGeneration; 7615 touchUpData.mFrame = frame; 7616 touchUpData.mNode = node; 7617 touchUpData.mX = x; 7618 touchUpData.mY = y; 7619 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7620 } 7621 7622 7623 private int getScaledMaxXScroll() { 7624 int width; 7625 if (mHeightCanMeasure == false) { 7626 width = getViewWidth() / 4; 7627 } else { 7628 Rect visRect = new Rect(); 7629 calcOurVisibleRect(visRect); 7630 width = visRect.width() / 2; 7631 } 7632 // FIXME the divisor should be retrieved from somewhere 7633 return viewToContentX(width); 7634 } 7635 7636 private int getScaledMaxYScroll() { 7637 int height; 7638 if (mHeightCanMeasure == false) { 7639 height = getViewHeight() / 4; 7640 } else { 7641 Rect visRect = new Rect(); 7642 calcOurVisibleRect(visRect); 7643 height = visRect.height() / 2; 7644 } 7645 // FIXME the divisor should be retrieved from somewhere 7646 // the closest thing today is hard-coded into ScrollView.java 7647 // (from ScrollView.java, line 363) int maxJump = height/2; 7648 return Math.round(height * mInvActualScale); 7649 } 7650 7651 /** 7652 * Called by JNI to invalidate view 7653 */ 7654 private void viewInvalidate() { 7655 invalidate(); 7656 } 7657 7658 /** 7659 * Pass the key to the plugin. This assumes that nativeFocusIsPlugin() 7660 * returned true. 7661 */ 7662 private void letPluginHandleNavKey(int keyCode, long time, boolean down) { 7663 int keyEventAction; 7664 int eventHubAction; 7665 if (down) { 7666 keyEventAction = KeyEvent.ACTION_DOWN; 7667 eventHubAction = EventHub.KEY_DOWN; 7668 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7669 } else { 7670 keyEventAction = KeyEvent.ACTION_UP; 7671 eventHubAction = EventHub.KEY_UP; 7672 } 7673 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7674 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7675 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7676 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7677 , 0, 0, 0); 7678 mWebViewCore.sendMessage(eventHubAction, event); 7679 } 7680 7681 // return true if the key was handled 7682 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7683 long time) { 7684 if (mNativeClass == 0) { 7685 return false; 7686 } 7687 mLastCursorTime = time; 7688 mLastCursorBounds = nativeGetCursorRingBounds(); 7689 boolean keyHandled 7690 = nativeMoveCursor(keyCode, count, noScroll) == false; 7691 if (DebugFlags.WEB_VIEW) { 7692 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7693 + " mLastCursorTime=" + mLastCursorTime 7694 + " handled=" + keyHandled); 7695 } 7696 if (keyHandled == false || mHeightCanMeasure == false) { 7697 return keyHandled; 7698 } 7699 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7700 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7701 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7702 Rect visRect = new Rect(); 7703 calcOurVisibleRect(visRect); 7704 Rect outset = new Rect(visRect); 7705 int maxXScroll = visRect.width() / 2; 7706 int maxYScroll = visRect.height() / 2; 7707 outset.inset(-maxXScroll, -maxYScroll); 7708 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7709 return keyHandled; 7710 } 7711 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7712 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7713 maxXScroll); 7714 if (maxH > 0) { 7715 pinScrollBy(maxH, 0, true, 0); 7716 } else { 7717 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7718 -maxXScroll); 7719 if (maxH < 0) { 7720 pinScrollBy(maxH, 0, true, 0); 7721 } 7722 } 7723 if (mLastCursorBounds.isEmpty()) return keyHandled; 7724 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7725 return keyHandled; 7726 } 7727 if (DebugFlags.WEB_VIEW) { 7728 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7729 + contentCursorRingBounds); 7730 } 7731 requestRectangleOnScreen(viewCursorRingBounds); 7732 mUserScroll = true; 7733 return keyHandled; 7734 } 7735 7736 /** 7737 * Set the background color. It's white by default. Pass 7738 * zero to make the view transparent. 7739 * @param color the ARGB color described by Color.java 7740 */ 7741 public void setBackgroundColor(int color) { 7742 mBackgroundColor = color; 7743 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7744 } 7745 7746 public void debugDump() { 7747 nativeDebugDump(); 7748 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7749 } 7750 7751 /** 7752 * Draw the HTML page into the specified canvas. This call ignores any 7753 * view-specific zoom, scroll offset, or other changes. It does not draw 7754 * any view-specific chrome, such as progress or URL bars. 7755 * 7756 * @hide only needs to be accessible to Browser and testing 7757 */ 7758 public void drawPage(Canvas canvas) { 7759 mWebViewCore.drawContentPicture(canvas, 0, false, false); 7760 } 7761 7762 /** 7763 * Set the time to wait between passing touches to WebCore. See also the 7764 * TOUCH_SENT_INTERVAL member for further discussion. 7765 * 7766 * @hide This is only used by the DRT test application. 7767 */ 7768 public void setTouchInterval(int interval) { 7769 mCurrentTouchInterval = interval; 7770 } 7771 7772 /** 7773 * Update our cache with updatedText. 7774 * @param updatedText The new text to put in our cache. 7775 */ 7776 /* package */ void updateCachedTextfield(String updatedText) { 7777 // Also place our generation number so that when we look at the cache 7778 // we recognize that it is up to date. 7779 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7780 } 7781 7782 private native int nativeCacheHitFramePointer(); 7783 private native Rect nativeCacheHitNodeBounds(); 7784 private native int nativeCacheHitNodePointer(); 7785 /* package */ native void nativeClearCursor(); 7786 private native void nativeCreate(int ptr); 7787 private native int nativeCursorFramePointer(); 7788 private native Rect nativeCursorNodeBounds(); 7789 private native int nativeCursorNodePointer(); 7790 /* package */ native boolean nativeCursorMatchesFocus(); 7791 private native boolean nativeCursorIntersects(Rect visibleRect); 7792 private native boolean nativeCursorIsAnchor(); 7793 private native boolean nativeCursorIsTextInput(); 7794 private native Point nativeCursorPosition(); 7795 private native String nativeCursorText(); 7796 /** 7797 * Returns true if the native cursor node says it wants to handle key events 7798 * (ala plugins). This can only be called if mNativeClass is non-zero! 7799 */ 7800 private native boolean nativeCursorWantsKeyEvents(); 7801 private native void nativeDebugDump(); 7802 private native void nativeDestroy(); 7803 private native boolean nativeEvaluateLayersAnimations(); 7804 private native void nativeExtendSelection(int x, int y); 7805 private native void nativeDrawExtras(Canvas canvas, int extra); 7806 private native void nativeDumpDisplayTree(String urlOrNull); 7807 private native int nativeFindAll(String findLower, String findUpper); 7808 private native void nativeFindNext(boolean forward); 7809 /* package */ native int nativeFocusCandidateFramePointer(); 7810 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7811 /* package */ native boolean nativeFocusCandidateIsPassword(); 7812 private native boolean nativeFocusCandidateIsRtlText(); 7813 private native boolean nativeFocusCandidateIsTextInput(); 7814 /* package */ native int nativeFocusCandidateMaxLength(); 7815 /* package */ native String nativeFocusCandidateName(); 7816 private native Rect nativeFocusCandidateNodeBounds(); 7817 /* package */ native int nativeFocusCandidatePointer(); 7818 private native String nativeFocusCandidateText(); 7819 private native int nativeFocusCandidateTextSize(); 7820 /** 7821 * Returns an integer corresponding to WebView.cpp::type. 7822 * See WebTextView.setType() 7823 */ 7824 private native int nativeFocusCandidateType(); 7825 private native boolean nativeFocusIsPlugin(); 7826 private native Rect nativeFocusNodeBounds(); 7827 /* package */ native int nativeFocusNodePointer(); 7828 private native Rect nativeGetCursorRingBounds(); 7829 private native String nativeGetSelection(); 7830 private native boolean nativeHasCursorNode(); 7831 private native boolean nativeHasFocusNode(); 7832 private native void nativeHideCursor(); 7833 private native boolean nativeHitSelection(int x, int y); 7834 private native String nativeImageURI(int x, int y); 7835 private native void nativeInstrumentReport(); 7836 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7837 // return true if the page has been scrolled 7838 private native boolean nativeMotionUp(int x, int y, int slop); 7839 // returns false if it handled the key 7840 private native boolean nativeMoveCursor(int keyCode, int count, 7841 boolean noScroll); 7842 private native int nativeMoveGeneration(); 7843 private native void nativeMoveSelection(int x, int y); 7844 private native boolean nativePointInNavCache(int x, int y, int slop); 7845 // Like many other of our native methods, you must make sure that 7846 // mNativeClass is not null before calling this method. 7847 private native void nativeRecordButtons(boolean focused, 7848 boolean pressed, boolean invalidate); 7849 private native void nativeResetSelection(); 7850 private native void nativeSelectAll(); 7851 private native void nativeSelectBestAt(Rect rect); 7852 private native int nativeSelectionX(); 7853 private native int nativeSelectionY(); 7854 private native int nativeFindIndex(); 7855 private native void nativeSetExtendSelection(); 7856 private native void nativeSetFindIsEmpty(); 7857 private native void nativeSetFindIsUp(boolean isUp); 7858 private native void nativeSetFollowedLink(boolean followed); 7859 private native void nativeSetHeightCanMeasure(boolean measure); 7860 private native void nativeSetRootLayer(int layer); 7861 private native void nativeSetSelectionPointer(boolean set, 7862 float scale, int x, int y); 7863 private native boolean nativeStartSelection(int x, int y); 7864 private native void nativeSetSelectionRegion(boolean set); 7865 private native Rect nativeSubtractLayers(Rect content); 7866 private native int nativeTextGeneration(); 7867 // Never call this version except by updateCachedTextfield(String) - 7868 // we always want to pass in our generation number. 7869 private native void nativeUpdateCachedTextfield(String updatedText, 7870 int generation); 7871 private native boolean nativeWordSelection(int x, int y); 7872 // return NO_LEFTEDGE means failure. 7873 private static final int NO_LEFTEDGE = -1; 7874 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 7875} 7876