WebView.java revision 12e08f3a8853ef4248ee9c18583c3b4917dd0c40
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 /** 1288 * Destroy the internal state of the WebView. This method should be called 1289 * after the WebView has been removed from the view system. No other 1290 * methods may be called on a WebView after destroy. 1291 */ 1292 public void destroy() { 1293 clearTextEntry(false); 1294 if (mWebViewCore != null) { 1295 // Set the handlers to null before destroying WebViewCore so no 1296 // more messages will be posted. 1297 mCallbackProxy.setWebViewClient(null); 1298 mCallbackProxy.setWebChromeClient(null); 1299 // Tell WebViewCore to destroy itself 1300 synchronized (this) { 1301 WebViewCore webViewCore = mWebViewCore; 1302 mWebViewCore = null; // prevent using partial webViewCore 1303 webViewCore.destroy(); 1304 } 1305 // Remove any pending messages that might not be serviced yet. 1306 mPrivateHandler.removeCallbacksAndMessages(null); 1307 mCallbackProxy.removeCallbacksAndMessages(null); 1308 // Wake up the WebCore thread just in case it is waiting for a 1309 // javascript dialog. 1310 synchronized (mCallbackProxy) { 1311 mCallbackProxy.notify(); 1312 } 1313 } 1314 if (mNativeClass != 0) { 1315 nativeDestroy(); 1316 mNativeClass = 0; 1317 } 1318 } 1319 1320 /** 1321 * Enables platform notifications of data state and proxy changes. 1322 */ 1323 public static void enablePlatformNotifications() { 1324 Network.enablePlatformNotifications(); 1325 } 1326 1327 /** 1328 * If platform notifications are enabled, this should be called 1329 * from the Activity's onPause() or onStop(). 1330 */ 1331 public static void disablePlatformNotifications() { 1332 Network.disablePlatformNotifications(); 1333 } 1334 1335 /** 1336 * Sets JavaScript engine flags. 1337 * 1338 * @param flags JS engine flags in a String 1339 * 1340 * @hide pending API solidification 1341 */ 1342 public void setJsFlags(String flags) { 1343 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1344 } 1345 1346 /** 1347 * Inform WebView of the network state. This is used to set 1348 * the javascript property window.navigator.isOnline and 1349 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1350 * @param networkUp boolean indicating if network is available 1351 */ 1352 public void setNetworkAvailable(boolean networkUp) { 1353 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1354 networkUp ? 1 : 0, 0); 1355 } 1356 1357 /** 1358 * Inform WebView about the current network type. 1359 * {@hide} 1360 */ 1361 public void setNetworkType(String type, String subtype) { 1362 Map<String, String> map = new HashMap<String, String>(); 1363 map.put("type", type); 1364 map.put("subtype", subtype); 1365 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1366 } 1367 /** 1368 * Save the state of this WebView used in 1369 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1370 * method no longer stores the display data for this WebView. The previous 1371 * behavior could potentially leak files if {@link #restoreState} was never 1372 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1373 * and restoring the display data. 1374 * @param outState The Bundle to store the WebView state. 1375 * @return The same copy of the back/forward list used to save the state. If 1376 * saveState fails, the returned list will be null. 1377 * @see #savePicture 1378 * @see #restorePicture 1379 */ 1380 public WebBackForwardList saveState(Bundle outState) { 1381 if (outState == null) { 1382 return null; 1383 } 1384 // We grab a copy of the back/forward list because a client of WebView 1385 // may have invalidated the history list by calling clearHistory. 1386 WebBackForwardList list = copyBackForwardList(); 1387 final int currentIndex = list.getCurrentIndex(); 1388 final int size = list.getSize(); 1389 // We should fail saving the state if the list is empty or the index is 1390 // not in a valid range. 1391 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1392 return null; 1393 } 1394 outState.putInt("index", currentIndex); 1395 // FIXME: This should just be a byte[][] instead of ArrayList but 1396 // Parcel.java does not have the code to handle multi-dimensional 1397 // arrays. 1398 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1399 for (int i = 0; i < size; i++) { 1400 WebHistoryItem item = list.getItemAtIndex(i); 1401 if (null == item) { 1402 // FIXME: this shouldn't happen 1403 // need to determine how item got set to null 1404 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1405 return null; 1406 } 1407 byte[] data = item.getFlattenedData(); 1408 if (data == null) { 1409 // It would be very odd to not have any data for a given history 1410 // item. And we will fail to rebuild the history list without 1411 // flattened data. 1412 return null; 1413 } 1414 history.add(data); 1415 } 1416 outState.putSerializable("history", history); 1417 if (mCertificate != null) { 1418 outState.putBundle("certificate", 1419 SslCertificate.saveState(mCertificate)); 1420 } 1421 return list; 1422 } 1423 1424 /** 1425 * Save the current display data to the Bundle given. Used in conjunction 1426 * with {@link #saveState}. 1427 * @param b A Bundle to store the display data. 1428 * @param dest The file to store the serialized picture data. Will be 1429 * overwritten with this WebView's picture data. 1430 * @return True if the picture was successfully saved. 1431 */ 1432 public boolean savePicture(Bundle b, final File dest) { 1433 if (dest == null || b == null) { 1434 return false; 1435 } 1436 final Picture p = capturePicture(); 1437 // Use a temporary file while writing to ensure the destination file 1438 // contains valid data. 1439 final File temp = new File(dest.getPath() + ".writing"); 1440 new Thread(new Runnable() { 1441 public void run() { 1442 FileOutputStream out = null; 1443 try { 1444 out = new FileOutputStream(temp); 1445 p.writeToStream(out); 1446 // Writing the picture succeeded, rename the temporary file 1447 // to the destination. 1448 temp.renameTo(dest); 1449 } catch (Exception e) { 1450 // too late to do anything about it. 1451 } finally { 1452 if (out != null) { 1453 try { 1454 out.close(); 1455 } catch (Exception e) { 1456 // Can't do anything about that 1457 } 1458 } 1459 temp.delete(); 1460 } 1461 } 1462 }).start(); 1463 // now update the bundle 1464 b.putInt("scrollX", mScrollX); 1465 b.putInt("scrollY", mScrollY); 1466 b.putFloat("scale", mActualScale); 1467 b.putFloat("textwrapScale", mTextWrapScale); 1468 b.putBoolean("overview", mInZoomOverview); 1469 return true; 1470 } 1471 1472 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1473 int sx = b.getInt("scrollX", 0); 1474 int sy = b.getInt("scrollY", 0); 1475 float scale = b.getFloat("scale", 1.0f); 1476 mDrawHistory = true; 1477 mHistoryPicture = p; 1478 mScrollX = sx; 1479 mScrollY = sy; 1480 mHistoryWidth = Math.round(p.getWidth() * scale); 1481 mHistoryHeight = Math.round(p.getHeight() * scale); 1482 // as getWidth() / getHeight() of the view are not available yet, set up 1483 // mActualScale, so that when onSizeChanged() is called, the rest will 1484 // be set correctly 1485 mActualScale = scale; 1486 mInvActualScale = 1 / scale; 1487 mTextWrapScale = b.getFloat("textwrapScale", scale); 1488 mInZoomOverview = b.getBoolean("overview"); 1489 invalidate(); 1490 } 1491 1492 /** 1493 * Restore the display data that was save in {@link #savePicture}. Used in 1494 * conjunction with {@link #restoreState}. 1495 * @param b A Bundle containing the saved display data. 1496 * @param src The file where the picture data was stored. 1497 * @return True if the picture was successfully restored. 1498 */ 1499 public boolean restorePicture(Bundle b, File src) { 1500 if (src == null || b == null) { 1501 return false; 1502 } 1503 if (!src.exists()) { 1504 return false; 1505 } 1506 try { 1507 final FileInputStream in = new FileInputStream(src); 1508 final Bundle copy = new Bundle(b); 1509 new Thread(new Runnable() { 1510 public void run() { 1511 try { 1512 final Picture p = Picture.createFromStream(in); 1513 if (p != null) { 1514 // Post a runnable on the main thread to update the 1515 // history picture fields. 1516 mPrivateHandler.post(new Runnable() { 1517 public void run() { 1518 restoreHistoryPictureFields(p, copy); 1519 } 1520 }); 1521 } 1522 } finally { 1523 try { 1524 in.close(); 1525 } catch (Exception e) { 1526 // Nothing we can do now. 1527 } 1528 } 1529 } 1530 }).start(); 1531 } catch (FileNotFoundException e){ 1532 e.printStackTrace(); 1533 } 1534 return true; 1535 } 1536 1537 /** 1538 * Restore the state of this WebView from the given map used in 1539 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1540 * be called to restore the state of the WebView before using the object. If 1541 * it is called after the WebView has had a chance to build state (load 1542 * pages, create a back/forward list, etc.) there may be undesirable 1543 * side-effects. Please note that this method no longer restores the 1544 * display data for this WebView. See {@link #savePicture} and {@link 1545 * #restorePicture} for saving and restoring the display data. 1546 * @param inState The incoming Bundle of state. 1547 * @return The restored back/forward list or null if restoreState failed. 1548 * @see #savePicture 1549 * @see #restorePicture 1550 */ 1551 public WebBackForwardList restoreState(Bundle inState) { 1552 WebBackForwardList returnList = null; 1553 if (inState == null) { 1554 return returnList; 1555 } 1556 if (inState.containsKey("index") && inState.containsKey("history")) { 1557 mCertificate = SslCertificate.restoreState( 1558 inState.getBundle("certificate")); 1559 1560 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1561 final int index = inState.getInt("index"); 1562 // We can't use a clone of the list because we need to modify the 1563 // shared copy, so synchronize instead to prevent concurrent 1564 // modifications. 1565 synchronized (list) { 1566 final List<byte[]> history = 1567 (List<byte[]>) inState.getSerializable("history"); 1568 final int size = history.size(); 1569 // Check the index bounds so we don't crash in native code while 1570 // restoring the history index. 1571 if (index < 0 || index >= size) { 1572 return null; 1573 } 1574 for (int i = 0; i < size; i++) { 1575 byte[] data = history.remove(0); 1576 if (data == null) { 1577 // If we somehow have null data, we cannot reconstruct 1578 // the item and thus our history list cannot be rebuilt. 1579 return null; 1580 } 1581 WebHistoryItem item = new WebHistoryItem(data); 1582 list.addHistoryItem(item); 1583 } 1584 // Grab the most recent copy to return to the caller. 1585 returnList = copyBackForwardList(); 1586 // Update the copy to have the correct index. 1587 returnList.setCurrentIndex(index); 1588 } 1589 // Remove all pending messages because we are restoring previous 1590 // state. 1591 mWebViewCore.removeMessages(); 1592 // Send a restore state message. 1593 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1594 } 1595 return returnList; 1596 } 1597 1598 /** 1599 * Load the given url with the extra headers. 1600 * @param url The url of the resource to load. 1601 * @param extraHeaders The extra headers sent with this url. This should not 1602 * include the common headers like "user-agent". If it does, it 1603 * will be replaced by the intrinsic value of the WebView. 1604 */ 1605 public void loadUrl(String url, Map<String, String> extraHeaders) { 1606 switchOutDrawHistory(); 1607 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1608 arg.mUrl = url; 1609 arg.mExtraHeaders = extraHeaders; 1610 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1611 clearTextEntry(false); 1612 } 1613 1614 /** 1615 * Load the given url. 1616 * @param url The url of the resource to load. 1617 */ 1618 public void loadUrl(String url) { 1619 if (url == null) { 1620 return; 1621 } 1622 loadUrl(url, null); 1623 } 1624 1625 /** 1626 * Load the url with postData using "POST" method into the WebView. If url 1627 * is not a network url, it will be loaded with {link 1628 * {@link #loadUrl(String)} instead. 1629 * 1630 * @param url The url of the resource to load. 1631 * @param postData The data will be passed to "POST" request. 1632 */ 1633 public void postUrl(String url, byte[] postData) { 1634 if (URLUtil.isNetworkUrl(url)) { 1635 switchOutDrawHistory(); 1636 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1637 arg.mUrl = url; 1638 arg.mPostData = postData; 1639 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1640 clearTextEntry(false); 1641 } else { 1642 loadUrl(url); 1643 } 1644 } 1645 1646 /** 1647 * Load the given data into the WebView. This will load the data into 1648 * WebView using the data: scheme. Content loaded through this mechanism 1649 * does not have the ability to load content from the network. 1650 * @param data A String of data in the given encoding. The date must 1651 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1652 * %27, %3f respectively. 1653 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1654 * @param encoding The encoding of the data. i.e. utf-8, base64 1655 */ 1656 public void loadData(String data, String mimeType, String encoding) { 1657 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1658 } 1659 1660 /** 1661 * Load the given data into the WebView, use the provided URL as the base 1662 * URL for the content. The base URL is the URL that represents the page 1663 * that is loaded through this interface. As such, it is used to resolve any 1664 * relative URLs. The historyUrl is used for the history entry. 1665 * <p> 1666 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1667 * files through "file:///android_asset/" for the sub resources is more 1668 * restricted. If you provide null or empty string as baseUrl, you won't be 1669 * able to access asset files. If the baseUrl is anything other than 1670 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1671 * sub resources. 1672 * 1673 * @param baseUrl Url to resolve relative paths with, if null defaults to 1674 * "about:blank" 1675 * @param data A String of data in the given encoding. 1676 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1677 * defaults to "text/html" 1678 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1679 * @param historyUrl URL to use as the history entry. Can be null. 1680 */ 1681 public void loadDataWithBaseURL(String baseUrl, String data, 1682 String mimeType, String encoding, String historyUrl) { 1683 1684 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1685 loadData(data, mimeType, encoding); 1686 return; 1687 } 1688 switchOutDrawHistory(); 1689 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1690 arg.mBaseUrl = baseUrl; 1691 arg.mData = data; 1692 arg.mMimeType = mimeType; 1693 arg.mEncoding = encoding; 1694 arg.mHistoryUrl = historyUrl; 1695 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1696 clearTextEntry(false); 1697 } 1698 1699 /** 1700 * Stop the current load. 1701 */ 1702 public void stopLoading() { 1703 // TODO: should we clear all the messages in the queue before sending 1704 // STOP_LOADING? 1705 switchOutDrawHistory(); 1706 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1707 } 1708 1709 /** 1710 * Reload the current url. 1711 */ 1712 public void reload() { 1713 clearTextEntry(false); 1714 switchOutDrawHistory(); 1715 mWebViewCore.sendMessage(EventHub.RELOAD); 1716 } 1717 1718 /** 1719 * Return true if this WebView has a back history item. 1720 * @return True iff this WebView has a back history item. 1721 */ 1722 public boolean canGoBack() { 1723 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1724 synchronized (l) { 1725 if (l.getClearPending()) { 1726 return false; 1727 } else { 1728 return l.getCurrentIndex() > 0; 1729 } 1730 } 1731 } 1732 1733 /** 1734 * Go back in the history of this WebView. 1735 */ 1736 public void goBack() { 1737 goBackOrForward(-1); 1738 } 1739 1740 /** 1741 * Return true if this WebView has a forward history item. 1742 * @return True iff this Webview has a forward history item. 1743 */ 1744 public boolean canGoForward() { 1745 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1746 synchronized (l) { 1747 if (l.getClearPending()) { 1748 return false; 1749 } else { 1750 return l.getCurrentIndex() < l.getSize() - 1; 1751 } 1752 } 1753 } 1754 1755 /** 1756 * Go forward in the history of this WebView. 1757 */ 1758 public void goForward() { 1759 goBackOrForward(1); 1760 } 1761 1762 /** 1763 * Return true if the page can go back or forward the given 1764 * number of steps. 1765 * @param steps The negative or positive number of steps to move the 1766 * history. 1767 */ 1768 public boolean canGoBackOrForward(int steps) { 1769 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1770 synchronized (l) { 1771 if (l.getClearPending()) { 1772 return false; 1773 } else { 1774 int newIndex = l.getCurrentIndex() + steps; 1775 return newIndex >= 0 && newIndex < l.getSize(); 1776 } 1777 } 1778 } 1779 1780 /** 1781 * Go to the history item that is the number of steps away from 1782 * the current item. Steps is negative if backward and positive 1783 * if forward. 1784 * @param steps The number of steps to take back or forward in the back 1785 * forward list. 1786 */ 1787 public void goBackOrForward(int steps) { 1788 goBackOrForward(steps, false); 1789 } 1790 1791 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1792 if (steps != 0) { 1793 clearTextEntry(false); 1794 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1795 ignoreSnapshot ? 1 : 0); 1796 } 1797 } 1798 1799 private boolean extendScroll(int y) { 1800 int finalY = mScroller.getFinalY(); 1801 int newY = pinLocY(finalY + y); 1802 if (newY == finalY) return false; 1803 mScroller.setFinalY(newY); 1804 mScroller.extendDuration(computeDuration(0, y)); 1805 return true; 1806 } 1807 1808 /** 1809 * Scroll the contents of the view up by half the view size 1810 * @param top true to jump to the top of the page 1811 * @return true if the page was scrolled 1812 */ 1813 public boolean pageUp(boolean top) { 1814 if (mNativeClass == 0) { 1815 return false; 1816 } 1817 nativeClearCursor(); // start next trackball movement from page edge 1818 if (top) { 1819 // go to the top of the document 1820 return pinScrollTo(mScrollX, 0, true, 0); 1821 } 1822 // Page up 1823 int h = getHeight(); 1824 int y; 1825 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1826 y = -h + PAGE_SCROLL_OVERLAP; 1827 } else { 1828 y = -h / 2; 1829 } 1830 mUserScroll = true; 1831 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1832 : extendScroll(y); 1833 } 1834 1835 /** 1836 * Scroll the contents of the view down by half the page size 1837 * @param bottom true to jump to bottom of page 1838 * @return true if the page was scrolled 1839 */ 1840 public boolean pageDown(boolean bottom) { 1841 if (mNativeClass == 0) { 1842 return false; 1843 } 1844 nativeClearCursor(); // start next trackball movement from page edge 1845 if (bottom) { 1846 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 1847 } 1848 // Page down. 1849 int h = getHeight(); 1850 int y; 1851 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1852 y = h - PAGE_SCROLL_OVERLAP; 1853 } else { 1854 y = h / 2; 1855 } 1856 mUserScroll = true; 1857 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1858 : extendScroll(y); 1859 } 1860 1861 /** 1862 * Clear the view so that onDraw() will draw nothing but white background, 1863 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1864 */ 1865 public void clearView() { 1866 mContentWidth = 0; 1867 mContentHeight = 0; 1868 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1869 } 1870 1871 /** 1872 * Return a new picture that captures the current display of the webview. 1873 * This is a copy of the display, and will be unaffected if the webview 1874 * later loads a different URL. 1875 * 1876 * @return a picture containing the current contents of the view. Note this 1877 * picture is of the entire document, and is not restricted to the 1878 * bounds of the view. 1879 */ 1880 public Picture capturePicture() { 1881 if (null == mWebViewCore) return null; // check for out of memory tab 1882 return mWebViewCore.copyContentPicture(); 1883 } 1884 1885 /** 1886 * Return true if the browser is displaying a TextView for text input. 1887 */ 1888 private boolean inEditingMode() { 1889 return mWebTextView != null && mWebTextView.getParent() != null; 1890 } 1891 1892 /** 1893 * Remove the WebTextView. 1894 * @param disableFocusController If true, send a message to webkit 1895 * disabling the focus controller, so the caret stops blinking. 1896 */ 1897 private void clearTextEntry(boolean disableFocusController) { 1898 if (inEditingMode()) { 1899 mWebTextView.remove(); 1900 if (disableFocusController) { 1901 setFocusControllerInactive(); 1902 } 1903 } 1904 } 1905 1906 /** 1907 * Return the current scale of the WebView 1908 * @return The current scale. 1909 */ 1910 public float getScale() { 1911 return mActualScale; 1912 } 1913 1914 /** 1915 * Set the initial scale for the WebView. 0 means default. If 1916 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1917 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1918 * WebView starts will this value as initial scale. 1919 * 1920 * @param scaleInPercent The initial scale in percent. 1921 */ 1922 public void setInitialScale(int scaleInPercent) { 1923 mInitialScaleInPercent = scaleInPercent; 1924 } 1925 1926 /** 1927 * Invoke the graphical zoom picker widget for this WebView. This will 1928 * result in the zoom widget appearing on the screen to control the zoom 1929 * level of this WebView. 1930 */ 1931 public void invokeZoomPicker() { 1932 if (!getSettings().supportZoom()) { 1933 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1934 return; 1935 } 1936 clearTextEntry(false); 1937 if (getSettings().getBuiltInZoomControls()) { 1938 getZoomButtonsController().setVisible(true); 1939 } else { 1940 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1941 mPrivateHandler.postDelayed(mZoomControlRunnable, 1942 ZOOM_CONTROLS_TIMEOUT); 1943 } 1944 } 1945 1946 /** 1947 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1948 * is found and the anchor has a non-javascript url, the HitTestResult type 1949 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1950 * anchor does not have a url or if it is a javascript url, the type will 1951 * be UNKNOWN_TYPE and the url has to be retrieved through 1952 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1953 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1954 * the "extra" field. A type of 1955 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1956 * a child node. If a phone number is found, the HitTestResult type is set 1957 * to PHONE_TYPE and the phone number is set in the "extra" field of 1958 * HitTestResult. If a map address is found, the HitTestResult type is set 1959 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1960 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1961 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1962 * HitTestResult type is set to UNKNOWN_TYPE. 1963 */ 1964 public HitTestResult getHitTestResult() { 1965 if (mNativeClass == 0) { 1966 return null; 1967 } 1968 1969 HitTestResult result = new HitTestResult(); 1970 if (nativeHasCursorNode()) { 1971 if (nativeCursorIsTextInput()) { 1972 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1973 } else { 1974 String text = nativeCursorText(); 1975 if (text != null) { 1976 if (text.startsWith(SCHEME_TEL)) { 1977 result.setType(HitTestResult.PHONE_TYPE); 1978 result.setExtra(text.substring(SCHEME_TEL.length())); 1979 } else if (text.startsWith(SCHEME_MAILTO)) { 1980 result.setType(HitTestResult.EMAIL_TYPE); 1981 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1982 } else if (text.startsWith(SCHEME_GEO)) { 1983 result.setType(HitTestResult.GEO_TYPE); 1984 result.setExtra(URLDecoder.decode(text 1985 .substring(SCHEME_GEO.length()))); 1986 } else if (nativeCursorIsAnchor()) { 1987 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1988 result.setExtra(text); 1989 } 1990 } 1991 } 1992 } 1993 int type = result.getType(); 1994 if (type == HitTestResult.UNKNOWN_TYPE 1995 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1996 // Now check to see if it is an image. 1997 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1998 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1999 String text = nativeImageURI(contentX, contentY); 2000 if (text != null) { 2001 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2002 HitTestResult.IMAGE_TYPE : 2003 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2004 result.setExtra(text); 2005 } 2006 } 2007 return result; 2008 } 2009 2010 // Called by JNI when the DOM has changed the focus. Clear the focus so 2011 // that new keys will go to the newly focused field 2012 private void domChangedFocus() { 2013 if (inEditingMode()) { 2014 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2015 } 2016 } 2017 /** 2018 * Request the href of an anchor element due to getFocusNodePath returning 2019 * "href." If hrefMsg is null, this method returns immediately and does not 2020 * dispatch hrefMsg to its target. 2021 * 2022 * @param hrefMsg This message will be dispatched with the result of the 2023 * request as the data member with "url" as key. The result can 2024 * be null. 2025 */ 2026 // FIXME: API change required to change the name of this function. We now 2027 // look at the cursor node, and not the focus node. Also, what is 2028 // getFocusNodePath? 2029 public void requestFocusNodeHref(Message hrefMsg) { 2030 if (hrefMsg == null || mNativeClass == 0) { 2031 return; 2032 } 2033 if (nativeCursorIsAnchor()) { 2034 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2035 nativeCursorFramePointer(), nativeCursorNodePointer(), 2036 hrefMsg); 2037 } 2038 } 2039 2040 /** 2041 * Request the url of the image last touched by the user. msg will be sent 2042 * to its target with a String representing the url as its object. 2043 * 2044 * @param msg This message will be dispatched with the result of the request 2045 * as the data member with "url" as key. The result can be null. 2046 */ 2047 public void requestImageRef(Message msg) { 2048 if (0 == mNativeClass) return; // client isn't initialized 2049 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2050 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2051 String ref = nativeImageURI(contentX, contentY); 2052 Bundle data = msg.getData(); 2053 data.putString("url", ref); 2054 msg.setData(data); 2055 msg.sendToTarget(); 2056 } 2057 2058 private static int pinLoc(int x, int viewMax, int docMax) { 2059// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2060 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2061 // pin the short document to the top/left of the screen 2062 x = 0; 2063// Log.d(LOGTAG, "--- center " + x); 2064 } else if (x < 0) { 2065 x = 0; 2066// Log.d(LOGTAG, "--- zero"); 2067 } else if (x + viewMax > docMax) { 2068 x = docMax - viewMax; 2069// Log.d(LOGTAG, "--- pin " + x); 2070 } 2071 return x; 2072 } 2073 2074 // Expects x in view coordinates 2075 private int pinLocX(int x) { 2076 if (mInOverScrollMode) return x; 2077 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2078 } 2079 2080 // Expects y in view coordinates 2081 private int pinLocY(int y) { 2082 if (mInOverScrollMode) return y; 2083 return pinLoc(y, getViewHeightWithTitle(), 2084 computeRealVerticalScrollRange() + getTitleHeight()); 2085 } 2086 2087 /** 2088 * A title bar which is embedded in this WebView, and scrolls along with it 2089 * vertically, but not horizontally. 2090 */ 2091 private View mTitleBar; 2092 2093 /** 2094 * Since we draw the title bar ourselves, we removed the shadow from the 2095 * browser's activity. We do want a shadow at the bottom of the title bar, 2096 * or at the top of the screen if the title bar is not visible. This 2097 * drawable serves that purpose. 2098 */ 2099 private Drawable mTitleShadow; 2100 2101 /** 2102 * Add or remove a title bar to be embedded into the WebView, and scroll 2103 * along with it vertically, while remaining in view horizontally. Pass 2104 * null to remove the title bar from the WebView, and return to drawing 2105 * the WebView normally without translating to account for the title bar. 2106 * @hide 2107 */ 2108 public void setEmbeddedTitleBar(View v) { 2109 if (mTitleBar == v) return; 2110 if (mTitleBar != null) { 2111 removeView(mTitleBar); 2112 } 2113 if (null != v) { 2114 addView(v, new AbsoluteLayout.LayoutParams( 2115 ViewGroup.LayoutParams.MATCH_PARENT, 2116 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2117 if (mTitleShadow == null) { 2118 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 2119 com.android.internal.R.drawable.title_bar_shadow); 2120 } 2121 } 2122 mTitleBar = v; 2123 } 2124 2125 /** 2126 * Given a distance in view space, convert it to content space. Note: this 2127 * does not reflect translation, just scaling, so this should not be called 2128 * with coordinates, but should be called for dimensions like width or 2129 * height. 2130 */ 2131 private int viewToContentDimension(int d) { 2132 return Math.round(d * mInvActualScale); 2133 } 2134 2135 /** 2136 * Given an x coordinate in view space, convert it to content space. Also 2137 * may be used for absolute heights (such as for the WebTextView's 2138 * textSize, which is unaffected by the height of the title bar). 2139 */ 2140 /*package*/ int viewToContentX(int x) { 2141 return viewToContentDimension(x); 2142 } 2143 2144 /** 2145 * Given a y coordinate in view space, convert it to content space. 2146 * Takes into account the height of the title bar if there is one 2147 * embedded into the WebView. 2148 */ 2149 /*package*/ int viewToContentY(int y) { 2150 return viewToContentDimension(y - getTitleHeight()); 2151 } 2152 2153 /** 2154 * Given a x coordinate in view space, convert it to content space. 2155 * Returns the result as a float. 2156 */ 2157 private float viewToContentXf(int x) { 2158 return x * mInvActualScale; 2159 } 2160 2161 /** 2162 * Given a y coordinate in view space, convert it to content space. 2163 * Takes into account the height of the title bar if there is one 2164 * embedded into the WebView. Returns the result as a float. 2165 */ 2166 private float viewToContentYf(int y) { 2167 return (y - getTitleHeight()) * mInvActualScale; 2168 } 2169 2170 /** 2171 * Given a distance in content space, convert it to view space. Note: this 2172 * does not reflect translation, just scaling, so this should not be called 2173 * with coordinates, but should be called for dimensions like width or 2174 * height. 2175 */ 2176 /*package*/ int contentToViewDimension(int d) { 2177 return Math.round(d * mActualScale); 2178 } 2179 2180 /** 2181 * Given an x coordinate in content space, convert it to view 2182 * space. 2183 */ 2184 /*package*/ int contentToViewX(int x) { 2185 return contentToViewDimension(x); 2186 } 2187 2188 /** 2189 * Given a y coordinate in content space, convert it to view 2190 * space. Takes into account the height of the title bar. 2191 */ 2192 /*package*/ int contentToViewY(int y) { 2193 return contentToViewDimension(y) + getTitleHeight(); 2194 } 2195 2196 private Rect contentToViewRect(Rect x) { 2197 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2198 contentToViewX(x.right), contentToViewY(x.bottom)); 2199 } 2200 2201 /* To invalidate a rectangle in content coordinates, we need to transform 2202 the rect into view coordinates, so we can then call invalidate(...). 2203 2204 Normally, we would just call contentToView[XY](...), which eventually 2205 calls Math.round(coordinate * mActualScale). However, for invalidates, 2206 we need to account for the slop that occurs with antialiasing. To 2207 address that, we are a little more liberal in the size of the rect that 2208 we invalidate. 2209 2210 This liberal calculation calls floor() for the top/left, and ceil() for 2211 the bottom/right coordinates. This catches the possible extra pixels of 2212 antialiasing that we might have missed with just round(). 2213 */ 2214 2215 // Called by JNI to invalidate the View, given rectangle coordinates in 2216 // content space 2217 private void viewInvalidate(int l, int t, int r, int b) { 2218 final float scale = mActualScale; 2219 final int dy = getTitleHeight(); 2220 invalidate((int)Math.floor(l * scale), 2221 (int)Math.floor(t * scale) + dy, 2222 (int)Math.ceil(r * scale), 2223 (int)Math.ceil(b * scale) + dy); 2224 } 2225 2226 // Called by JNI to invalidate the View after a delay, given rectangle 2227 // coordinates in content space 2228 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2229 final float scale = mActualScale; 2230 final int dy = getTitleHeight(); 2231 postInvalidateDelayed(delay, 2232 (int)Math.floor(l * scale), 2233 (int)Math.floor(t * scale) + dy, 2234 (int)Math.ceil(r * scale), 2235 (int)Math.ceil(b * scale) + dy); 2236 } 2237 2238 private void invalidateContentRect(Rect r) { 2239 viewInvalidate(r.left, r.top, r.right, r.bottom); 2240 } 2241 2242 // stop the scroll animation, and don't let a subsequent fling add 2243 // to the existing velocity 2244 private void abortAnimation() { 2245 mScroller.abortAnimation(); 2246 mLastVelocity = 0; 2247 } 2248 2249 /* call from webcoreview.draw(), so we're still executing in the UI thread 2250 */ 2251 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2252 2253 // premature data from webkit, ignore 2254 if ((w | h) == 0) { 2255 return; 2256 } 2257 2258 // don't abort a scroll animation if we didn't change anything 2259 if (mContentWidth != w || mContentHeight != h) { 2260 // record new dimensions 2261 mContentWidth = w; 2262 mContentHeight = h; 2263 // If history Picture is drawn, don't update scroll. They will be 2264 // updated when we get out of that mode. 2265 if (!mDrawHistory) { 2266 // repin our scroll, taking into account the new content size 2267 int oldX = mScrollX; 2268 int oldY = mScrollY; 2269 mScrollX = pinLocX(mScrollX); 2270 mScrollY = pinLocY(mScrollY); 2271 if (oldX != mScrollX || oldY != mScrollY) { 2272 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2273 } 2274 if (!mScroller.isFinished()) { 2275 // We are in the middle of a scroll. Repin the final scroll 2276 // position. 2277 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2278 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2279 } 2280 } 2281 } 2282 contentSizeChanged(updateLayout); 2283 } 2284 2285 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2286 boolean force) { 2287 if (scale < mMinZoomScale) { 2288 scale = mMinZoomScale; 2289 // set mInZoomOverview for non mobile sites 2290 if (scale < mDefaultScale) mInZoomOverview = true; 2291 } else if (scale > mMaxZoomScale) { 2292 scale = mMaxZoomScale; 2293 } 2294 if (updateTextWrapScale) { 2295 mTextWrapScale = scale; 2296 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2297 mLastHeightSent = 0; 2298 } 2299 if (scale != mActualScale || force) { 2300 if (mDrawHistory) { 2301 // If history Picture is drawn, don't update scroll. They will 2302 // be updated when we get out of that mode. 2303 if (scale != mActualScale && !mPreviewZoomOnly) { 2304 mCallbackProxy.onScaleChanged(mActualScale, scale); 2305 } 2306 mActualScale = scale; 2307 mInvActualScale = 1 / scale; 2308 sendViewSizeZoom(); 2309 } else { 2310 // update our scroll so we don't appear to jump 2311 // i.e. keep the center of the doc in the center of the view 2312 2313 int oldX = mScrollX; 2314 int oldY = mScrollY; 2315 float ratio = scale * mInvActualScale; // old inverse 2316 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2317 float sy = ratio * oldY + (ratio - 1) 2318 * (mZoomCenterY - getTitleHeight()); 2319 2320 // now update our new scale and inverse 2321 if (scale != mActualScale && !mPreviewZoomOnly) { 2322 mCallbackProxy.onScaleChanged(mActualScale, scale); 2323 } 2324 mActualScale = scale; 2325 mInvActualScale = 1 / scale; 2326 2327 // Scale all the child views 2328 mViewManager.scaleAll(); 2329 2330 // as we don't have animation for scaling, don't do animation 2331 // for scrolling, as it causes weird intermediate state 2332 // pinScrollTo(Math.round(sx), Math.round(sy)); 2333 mScrollX = pinLocX(Math.round(sx)); 2334 mScrollY = pinLocY(Math.round(sy)); 2335 2336 // update webkit 2337 if (oldX != mScrollX || oldY != mScrollY) { 2338 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2339 } else { 2340 // the scroll position is adjusted at the beginning of the 2341 // zoom animation. But we want to update the WebKit at the 2342 // end of the zoom animation. See comments in onScaleEnd(). 2343 sendOurVisibleRect(); 2344 } 2345 sendViewSizeZoom(); 2346 } 2347 } 2348 } 2349 2350 // Used to avoid sending many visible rect messages. 2351 private Rect mLastVisibleRectSent; 2352 private Rect mLastGlobalRect; 2353 2354 private Rect sendOurVisibleRect() { 2355 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2356 2357 Rect rect = new Rect(); 2358 calcOurContentVisibleRect(rect); 2359 // Rect.equals() checks for null input. 2360 if (!rect.equals(mLastVisibleRectSent)) { 2361 Point pos = new Point(rect.left, rect.top); 2362 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2363 nativeMoveGeneration(), 0, pos); 2364 mLastVisibleRectSent = rect; 2365 } 2366 Rect globalRect = new Rect(); 2367 if (getGlobalVisibleRect(globalRect) 2368 && !globalRect.equals(mLastGlobalRect)) { 2369 if (DebugFlags.WEB_VIEW) { 2370 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2371 + globalRect.top + ",r=" + globalRect.right + ",b=" 2372 + globalRect.bottom); 2373 } 2374 // TODO: the global offset is only used by windowRect() 2375 // in ChromeClientAndroid ; other clients such as touch 2376 // and mouse events could return view + screen relative points. 2377 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2378 mLastGlobalRect = globalRect; 2379 } 2380 return rect; 2381 } 2382 2383 // Sets r to be the visible rectangle of our webview in view coordinates 2384 private void calcOurVisibleRect(Rect r) { 2385 Point p = new Point(); 2386 getGlobalVisibleRect(r, p); 2387 r.offset(-p.x, -p.y); 2388 if (mFindIsUp) { 2389 r.bottom -= mFindHeight; 2390 } 2391 } 2392 2393 // Sets r to be our visible rectangle in content coordinates 2394 private void calcOurContentVisibleRect(Rect r) { 2395 calcOurVisibleRect(r); 2396 // since we might overscroll, pin the rect to the bounds of the content 2397 r.left = Math.max(viewToContentX(r.left), 0); 2398 // viewToContentY will remove the total height of the title bar. Add 2399 // the visible height back in to account for the fact that if the title 2400 // bar is partially visible, the part of the visible rect which is 2401 // displaying our content is displaced by that amount. 2402 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2403 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2404 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2405 } 2406 2407 // Sets r to be our visible rectangle in content coordinates. We use this 2408 // method on the native side to compute the position of the fixed layers. 2409 // Uses floating coordinates (necessary to correctly place elements when 2410 // the scale factor is not 1) 2411 private void calcOurContentVisibleRectF(RectF r) { 2412 Rect ri = new Rect(0,0,0,0); 2413 calcOurVisibleRect(ri); 2414 // pin the rect to the bounds of the content 2415 r.left = Math.max(viewToContentXf(ri.left), 0.0f); 2416 // viewToContentY will remove the total height of the title bar. Add 2417 // the visible height back in to account for the fact that if the title 2418 // bar is partially visible, the part of the visible rect which is 2419 // displaying our content is displaced by that amount. 2420 r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f); 2421 r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth); 2422 r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight); 2423 } 2424 2425 static class ViewSizeData { 2426 int mWidth; 2427 int mHeight; 2428 int mTextWrapWidth; 2429 int mAnchorX; 2430 int mAnchorY; 2431 float mScale; 2432 boolean mIgnoreHeight; 2433 } 2434 2435 /** 2436 * Compute unzoomed width and height, and if they differ from the last 2437 * values we sent, send them to webkit (to be used has new viewport) 2438 * 2439 * @return true if new values were sent 2440 */ 2441 private boolean sendViewSizeZoom() { 2442 if (mPreviewZoomOnly) return false; 2443 2444 int viewWidth = getViewWidth(); 2445 int newWidth = Math.round(viewWidth * mInvActualScale); 2446 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2447 /* 2448 * Because the native side may have already done a layout before the 2449 * View system was able to measure us, we have to send a height of 0 to 2450 * remove excess whitespace when we grow our width. This will trigger a 2451 * layout and a change in content size. This content size change will 2452 * mean that contentSizeChanged will either call this method directly or 2453 * indirectly from onSizeChanged. 2454 */ 2455 if (newWidth > mLastWidthSent && mWrapContent) { 2456 newHeight = 0; 2457 } 2458 // Avoid sending another message if the dimensions have not changed. 2459 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2460 ViewSizeData data = new ViewSizeData(); 2461 data.mWidth = newWidth; 2462 data.mHeight = newHeight; 2463 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2464 data.mScale = mActualScale; 2465 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2466 data.mAnchorX = mAnchorX; 2467 data.mAnchorY = mAnchorY; 2468 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2469 mLastWidthSent = newWidth; 2470 mLastHeightSent = newHeight; 2471 mAnchorX = mAnchorY = 0; 2472 return true; 2473 } 2474 return false; 2475 } 2476 2477 private int computeRealHorizontalScrollRange() { 2478 if (mDrawHistory) { 2479 return mHistoryWidth; 2480 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2481 && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2482 // only honor the scrollbar mode when it is at minimum zoom level 2483 return computeHorizontalScrollExtent(); 2484 } else { 2485 // to avoid rounding error caused unnecessary scrollbar, use floor 2486 return (int) Math.floor(mContentWidth * mActualScale); 2487 } 2488 } 2489 2490 @Override 2491 protected int computeHorizontalScrollRange() { 2492 int range = computeRealHorizontalScrollRange(); 2493 2494 // Adjust reported range if overscrolled to compress the scroll bars 2495 final int scrollX = mScrollX; 2496 final int overscrollRight = computeMaxScrollX(); 2497 if (scrollX < 0) { 2498 range -= scrollX; 2499 } else if (scrollX > overscrollRight) { 2500 range += scrollX - overscrollRight; 2501 } 2502 2503 return range; 2504 } 2505 2506 @Override 2507 protected int computeHorizontalScrollOffset() { 2508 return Math.max(mScrollX, 0); 2509 } 2510 2511 private int computeRealVerticalScrollRange() { 2512 if (mDrawHistory) { 2513 return mHistoryHeight; 2514 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2515 && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2516 // only honor the scrollbar mode when it is at minimum zoom level 2517 return computeVerticalScrollExtent(); 2518 } else { 2519 // to avoid rounding error caused unnecessary scrollbar, use floor 2520 return (int) Math.floor(mContentHeight * mActualScale); 2521 } 2522 } 2523 2524 @Override 2525 protected int computeVerticalScrollRange() { 2526 int range = computeRealVerticalScrollRange(); 2527 2528 // Adjust reported range if overscrolled to compress the scroll bars 2529 final int scrollY = mScrollY; 2530 final int overscrollBottom = computeMaxScrollY(); 2531 if (scrollY < 0) { 2532 range -= scrollY; 2533 } else if (scrollY > overscrollBottom) { 2534 range += scrollY - overscrollBottom; 2535 } 2536 2537 return range; 2538 } 2539 2540 @Override 2541 protected int computeVerticalScrollOffset() { 2542 return Math.max(mScrollY - getTitleHeight(), 0); 2543 } 2544 2545 @Override 2546 protected int computeVerticalScrollExtent() { 2547 return getViewHeight(); 2548 } 2549 2550 /** @hide */ 2551 @Override 2552 protected void onDrawVerticalScrollBar(Canvas canvas, 2553 Drawable scrollBar, 2554 int l, int t, int r, int b) { 2555 if (mScrollY < 0) { 2556 t -= mScrollY; 2557 } 2558 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2559 scrollBar.draw(canvas); 2560 } 2561 2562 @Override 2563 protected void onOverscrolled(int scrollX, int scrollY, boolean clampedX, 2564 boolean clampedY) { 2565 mInOverScrollMode = false; 2566 int maxX = computeMaxScrollX(); 2567 if (maxX == 0) { 2568 // do not over scroll x if the page just fits the screen 2569 scrollX = pinLocX(scrollX); 2570 } else if (scrollX < 0 || scrollX > maxX) { 2571 mInOverScrollMode = true; 2572 } 2573 if (scrollY < 0 || scrollY > computeMaxScrollY()) { 2574 mInOverScrollMode = true; 2575 } 2576 2577 super.scrollTo(scrollX, scrollY); 2578 } 2579 2580 /** 2581 * Get the url for the current page. This is not always the same as the url 2582 * passed to WebViewClient.onPageStarted because although the load for 2583 * that url has begun, the current page may not have changed. 2584 * @return The url for the current page. 2585 */ 2586 public String getUrl() { 2587 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2588 return h != null ? h.getUrl() : null; 2589 } 2590 2591 /** 2592 * Get the original url for the current page. This is not always the same 2593 * as the url passed to WebViewClient.onPageStarted because although the 2594 * load for that url has begun, the current page may not have changed. 2595 * Also, there may have been redirects resulting in a different url to that 2596 * originally requested. 2597 * @return The url that was originally requested for the current page. 2598 */ 2599 public String getOriginalUrl() { 2600 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2601 return h != null ? h.getOriginalUrl() : null; 2602 } 2603 2604 /** 2605 * Get the title for the current page. This is the title of the current page 2606 * until WebViewClient.onReceivedTitle is called. 2607 * @return The title for the current page. 2608 */ 2609 public String getTitle() { 2610 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2611 return h != null ? h.getTitle() : null; 2612 } 2613 2614 /** 2615 * Get the favicon for the current page. This is the favicon of the current 2616 * page until WebViewClient.onReceivedIcon is called. 2617 * @return The favicon for the current page. 2618 */ 2619 public Bitmap getFavicon() { 2620 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2621 return h != null ? h.getFavicon() : null; 2622 } 2623 2624 /** 2625 * Get the touch icon url for the apple-touch-icon <link> element. 2626 * @hide 2627 */ 2628 public String getTouchIconUrl() { 2629 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2630 return h != null ? h.getTouchIconUrl() : null; 2631 } 2632 2633 /** 2634 * Get the progress for the current page. 2635 * @return The progress for the current page between 0 and 100. 2636 */ 2637 public int getProgress() { 2638 return mCallbackProxy.getProgress(); 2639 } 2640 2641 /** 2642 * @return the height of the HTML content. 2643 */ 2644 public int getContentHeight() { 2645 return mContentHeight; 2646 } 2647 2648 /** 2649 * @return the width of the HTML content. 2650 * @hide 2651 */ 2652 public int getContentWidth() { 2653 return mContentWidth; 2654 } 2655 2656 /** 2657 * Pause all layout, parsing, and javascript timers for all webviews. This 2658 * is a global requests, not restricted to just this webview. This can be 2659 * useful if the application has been paused. 2660 */ 2661 public void pauseTimers() { 2662 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2663 } 2664 2665 /** 2666 * Resume all layout, parsing, and javascript timers for all webviews. 2667 * This will resume dispatching all timers. 2668 */ 2669 public void resumeTimers() { 2670 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2671 } 2672 2673 /** 2674 * Call this to pause any extra processing associated with this view and 2675 * its associated DOM/plugins/javascript/etc. For example, if the view is 2676 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2677 * network traffic. When the view is again "active", call onResume(). 2678 * 2679 * Note that this differs from pauseTimers(), which affects all views/DOMs 2680 * @hide 2681 */ 2682 public void onPause() { 2683 if (!mIsPaused) { 2684 mIsPaused = true; 2685 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2686 } 2687 } 2688 2689 /** 2690 * Call this to balanace a previous call to onPause() 2691 * @hide 2692 */ 2693 public void onResume() { 2694 if (mIsPaused) { 2695 mIsPaused = false; 2696 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2697 } 2698 } 2699 2700 /** 2701 * Returns true if the view is paused, meaning onPause() was called. Calling 2702 * onResume() sets the paused state back to false. 2703 * @hide 2704 */ 2705 public boolean isPaused() { 2706 return mIsPaused; 2707 } 2708 2709 /** 2710 * Call this to inform the view that memory is low so that it can 2711 * free any available memory. 2712 */ 2713 public void freeMemory() { 2714 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2715 } 2716 2717 /** 2718 * Clear the resource cache. Note that the cache is per-application, so 2719 * this will clear the cache for all WebViews used. 2720 * 2721 * @param includeDiskFiles If false, only the RAM cache is cleared. 2722 */ 2723 public void clearCache(boolean includeDiskFiles) { 2724 // Note: this really needs to be a static method as it clears cache for all 2725 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2726 // we can't make this static. 2727 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2728 includeDiskFiles ? 1 : 0, 0); 2729 } 2730 2731 /** 2732 * Make sure that clearing the form data removes the adapter from the 2733 * currently focused textfield if there is one. 2734 */ 2735 public void clearFormData() { 2736 if (inEditingMode()) { 2737 AutoCompleteAdapter adapter = null; 2738 mWebTextView.setAdapterCustom(adapter); 2739 } 2740 } 2741 2742 /** 2743 * Tell the WebView to clear its internal back/forward list. 2744 */ 2745 public void clearHistory() { 2746 mCallbackProxy.getBackForwardList().setClearPending(); 2747 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2748 } 2749 2750 /** 2751 * Clear the SSL preferences table stored in response to proceeding with SSL 2752 * certificate errors. 2753 */ 2754 public void clearSslPreferences() { 2755 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2756 } 2757 2758 /** 2759 * Return the WebBackForwardList for this WebView. This contains the 2760 * back/forward list for use in querying each item in the history stack. 2761 * This is a copy of the private WebBackForwardList so it contains only a 2762 * snapshot of the current state. Multiple calls to this method may return 2763 * different objects. The object returned from this method will not be 2764 * updated to reflect any new state. 2765 */ 2766 public WebBackForwardList copyBackForwardList() { 2767 return mCallbackProxy.getBackForwardList().clone(); 2768 } 2769 2770 /* 2771 * Highlight and scroll to the next occurance of String in findAll. 2772 * Wraps the page infinitely, and scrolls. Must be called after 2773 * calling findAll. 2774 * 2775 * @param forward Direction to search. 2776 */ 2777 public void findNext(boolean forward) { 2778 if (0 == mNativeClass) return; // client isn't initialized 2779 nativeFindNext(forward); 2780 } 2781 2782 /* 2783 * Find all instances of find on the page and highlight them. 2784 * @param find String to find. 2785 * @return int The number of occurances of the String "find" 2786 * that were found. 2787 */ 2788 public int findAll(String find) { 2789 if (0 == mNativeClass) return 0; // client isn't initialized 2790 int result = find != null ? nativeFindAll(find.toLowerCase(), 2791 find.toUpperCase()) : 0; 2792 invalidate(); 2793 mLastFind = find; 2794 return result; 2795 } 2796 2797 /** 2798 * @hide 2799 */ 2800 public void setFindIsUp(boolean isUp) { 2801 mFindIsUp = isUp; 2802 if (isUp) { 2803 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2804 false); 2805 } 2806 if (0 == mNativeClass) return; // client isn't initialized 2807 nativeSetFindIsUp(isUp); 2808 } 2809 2810 /** 2811 * @hide 2812 */ 2813 public int findIndex() { 2814 if (0 == mNativeClass) return -1; 2815 return nativeFindIndex(); 2816 } 2817 2818 // Used to know whether the find dialog is open. Affects whether 2819 // or not we draw the highlights for matches. 2820 private boolean mFindIsUp; 2821 2822 private int mFindHeight; 2823 // Keep track of the last string sent, so we can search again after an 2824 // orientation change or the dismissal of the soft keyboard. 2825 private String mLastFind; 2826 2827 /** 2828 * Return the first substring consisting of the address of a physical 2829 * location. Currently, only addresses in the United States are detected, 2830 * and consist of: 2831 * - a house number 2832 * - a street name 2833 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2834 * - a city name 2835 * - a state or territory, either spelled out or two-letter abbr. 2836 * - an optional 5 digit or 9 digit zip code. 2837 * 2838 * All names must be correctly capitalized, and the zip code, if present, 2839 * must be valid for the state. The street type must be a standard USPS 2840 * spelling or abbreviation. The state or territory must also be spelled 2841 * or abbreviated using USPS standards. The house number may not exceed 2842 * five digits. 2843 * @param addr The string to search for addresses. 2844 * 2845 * @return the address, or if no address is found, return null. 2846 */ 2847 public static String findAddress(String addr) { 2848 return findAddress(addr, false); 2849 } 2850 2851 /** 2852 * @hide 2853 * Return the first substring consisting of the address of a physical 2854 * location. Currently, only addresses in the United States are detected, 2855 * and consist of: 2856 * - a house number 2857 * - a street name 2858 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2859 * - a city name 2860 * - a state or territory, either spelled out or two-letter abbr. 2861 * - an optional 5 digit or 9 digit zip code. 2862 * 2863 * Names are optionally capitalized, and the zip code, if present, 2864 * must be valid for the state. The street type must be a standard USPS 2865 * spelling or abbreviation. The state or territory must also be spelled 2866 * or abbreviated using USPS standards. The house number may not exceed 2867 * five digits. 2868 * @param addr The string to search for addresses. 2869 * @param caseInsensitive addr Set to true to make search ignore case. 2870 * 2871 * @return the address, or if no address is found, return null. 2872 */ 2873 public static String findAddress(String addr, boolean caseInsensitive) { 2874 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2875 } 2876 2877 /* 2878 * Clear the highlighting surrounding text matches created by findAll. 2879 */ 2880 public void clearMatches() { 2881 mLastFind = ""; 2882 if (mNativeClass == 0) 2883 return; 2884 nativeSetFindIsEmpty(); 2885 invalidate(); 2886 } 2887 2888 /** 2889 * @hide 2890 */ 2891 public void notifyFindDialogDismissed() { 2892 if (mWebViewCore == null) { 2893 return; 2894 } 2895 clearMatches(); 2896 setFindIsUp(false); 2897 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2898 false); 2899 // Now that the dialog has been removed, ensure that we scroll to a 2900 // location that is not beyond the end of the page. 2901 pinScrollTo(mScrollX, mScrollY, false, 0); 2902 invalidate(); 2903 } 2904 2905 /** 2906 * @hide 2907 */ 2908 public void setFindDialogHeight(int height) { 2909 if (DebugFlags.WEB_VIEW) { 2910 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2911 } 2912 mFindHeight = height; 2913 } 2914 2915 /** 2916 * Query the document to see if it contains any image references. The 2917 * message object will be dispatched with arg1 being set to 1 if images 2918 * were found and 0 if the document does not reference any images. 2919 * @param response The message that will be dispatched with the result. 2920 */ 2921 public void documentHasImages(Message response) { 2922 if (response == null) { 2923 return; 2924 } 2925 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2926 } 2927 2928 @Override 2929 public void computeScroll() { 2930 if (mScroller.computeScrollOffset()) { 2931 int oldX = mScrollX; 2932 int oldY = mScrollY; 2933 int x = mScroller.getCurrX(); 2934 int y = mScroller.getCurrY(); 2935 invalidate(); // So we draw again 2936 2937 if (oldX != x || oldY != y) { 2938 final int rangeX = computeMaxScrollX(); 2939 final int rangeY = computeMaxScrollY(); 2940 overscrollBy(x - oldX, y - oldY, oldX, oldY, 2941 rangeX, rangeY, 2942 mOverflingDistance, mOverflingDistance, false); 2943 2944 if (mEdgeGlowTop != null) { 2945 if (rangeY > 0 || getOverscrollMode() == OVERSCROLL_ALWAYS) { 2946 if (y < 0 && oldY >= 0) { 2947 mEdgeGlowTop.onAbsorb((int) mScroller.getCurrVelocity()); 2948 } else if (y > rangeY && oldY <= rangeY) { 2949 mEdgeGlowBottom.onAbsorb((int) mScroller.getCurrVelocity()); 2950 } 2951 } 2952 2953 if (rangeX > 0) { 2954 if (x < 0 && oldX >= 0) { 2955 mEdgeGlowLeft.onAbsorb((int) mScroller.getCurrVelocity()); 2956 } else if (x > rangeX && oldX <= rangeX) { 2957 mEdgeGlowRight.onAbsorb((int) mScroller.getCurrVelocity()); 2958 } 2959 } 2960 } 2961 } 2962 if (mScroller.isFinished()) { 2963 mPrivateHandler.sendEmptyMessage(RESUME_WEBCORE_PRIORITY); 2964 } 2965 } else { 2966 super.computeScroll(); 2967 } 2968 } 2969 2970 private static int computeDuration(int dx, int dy) { 2971 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2972 int duration = distance * 1000 / STD_SPEED; 2973 return Math.min(duration, MAX_DURATION); 2974 } 2975 2976 // helper to pin the scrollBy parameters (already in view coordinates) 2977 // returns true if the scroll was changed 2978 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2979 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2980 } 2981 // helper to pin the scrollTo parameters (already in view coordinates) 2982 // returns true if the scroll was changed 2983 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2984 x = pinLocX(x); 2985 y = pinLocY(y); 2986 int dx = x - mScrollX; 2987 int dy = y - mScrollY; 2988 2989 if ((dx | dy) == 0) { 2990 return false; 2991 } 2992 if (animate) { 2993 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2994 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2995 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2996 awakenScrollBars(mScroller.getDuration()); 2997 invalidate(); 2998 } else { 2999 abortAnimation(); // just in case 3000 scrollTo(x, y); 3001 } 3002 return true; 3003 } 3004 3005 // Scale from content to view coordinates, and pin. 3006 // Also called by jni webview.cpp 3007 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3008 if (mDrawHistory) { 3009 // disallow WebView to change the scroll position as History Picture 3010 // is used in the view system. 3011 // TODO: as we switchOutDrawHistory when trackball or navigation 3012 // keys are hit, this should be safe. Right? 3013 return false; 3014 } 3015 cx = contentToViewDimension(cx); 3016 cy = contentToViewDimension(cy); 3017 if (mHeightCanMeasure) { 3018 // move our visible rect according to scroll request 3019 if (cy != 0) { 3020 Rect tempRect = new Rect(); 3021 calcOurVisibleRect(tempRect); 3022 tempRect.offset(cx, cy); 3023 requestRectangleOnScreen(tempRect); 3024 } 3025 // FIXME: We scroll horizontally no matter what because currently 3026 // ScrollView and ListView will not scroll horizontally. 3027 // FIXME: Why do we only scroll horizontally if there is no 3028 // vertical scroll? 3029// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3030 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3031 } else { 3032 return pinScrollBy(cx, cy, animate, 0); 3033 } 3034 } 3035 3036 /** 3037 * Called by CallbackProxy when the page finishes loading. 3038 * @param url The URL of the page which has finished loading. 3039 */ 3040 /* package */ void onPageFinished(String url) { 3041 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3042 // If the user is now on a different page, or has scrolled the page 3043 // past the point where the title bar is offscreen, ignore the 3044 // scroll request. 3045 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3046 && mScrollX == 0 && mScrollY == 0) { 3047 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3048 SLIDE_TITLE_DURATION); 3049 } 3050 mPageThatNeedsToSlideTitleBarOffScreen = null; 3051 } 3052 } 3053 3054 /** 3055 * The URL of a page that sent a message to scroll the title bar off screen. 3056 * 3057 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3058 * title bar off the screen. Sometimes, the scroll position is set before 3059 * the page finishes loading. Rather than scrolling while the page is still 3060 * loading, keep track of the URL and new scroll position so we can perform 3061 * the scroll once the page finishes loading. 3062 */ 3063 private String mPageThatNeedsToSlideTitleBarOffScreen; 3064 3065 /** 3066 * The destination Y scroll position to be used when the page finishes 3067 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3068 */ 3069 private int mYDistanceToSlideTitleOffScreen; 3070 3071 // scale from content to view coordinates, and pin 3072 // return true if pin caused the final x/y different than the request cx/cy, 3073 // and a future scroll may reach the request cx/cy after our size has 3074 // changed 3075 // return false if the view scroll to the exact position as it is requested, 3076 // where negative numbers are taken to mean 0 3077 private boolean setContentScrollTo(int cx, int cy) { 3078 if (mDrawHistory) { 3079 // disallow WebView to change the scroll position as History Picture 3080 // is used in the view system. 3081 // One known case where this is called is that WebCore tries to 3082 // restore the scroll position. As history Picture already uses the 3083 // saved scroll position, it is ok to skip this. 3084 return false; 3085 } 3086 int vx; 3087 int vy; 3088 if ((cx | cy) == 0) { 3089 // If the page is being scrolled to (0,0), do not add in the title 3090 // bar's height, and simply scroll to (0,0). (The only other work 3091 // in contentToView_ is to multiply, so this would not change 0.) 3092 vx = 0; 3093 vy = 0; 3094 } else { 3095 vx = contentToViewX(cx); 3096 vy = contentToViewY(cy); 3097 } 3098// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3099// vx + " " + vy + "]"); 3100 // Some mobile sites attempt to scroll the title bar off the page by 3101 // scrolling to (0,1). If we are at the top left corner of the 3102 // page, assume this is an attempt to scroll off the title bar, and 3103 // animate the title bar off screen slowly enough that the user can see 3104 // it. 3105 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3106 && mTitleBar != null) { 3107 // FIXME: 100 should be defined somewhere as our max progress. 3108 if (getProgress() < 100) { 3109 // Wait to scroll the title bar off screen until the page has 3110 // finished loading. Keep track of the URL and the destination 3111 // Y position 3112 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3113 mYDistanceToSlideTitleOffScreen = vy; 3114 } else { 3115 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3116 } 3117 // Since we are animating, we have not yet reached the desired 3118 // scroll position. Do not return true to request another attempt 3119 return false; 3120 } 3121 pinScrollTo(vx, vy, false, 0); 3122 // If the request was to scroll to a negative coordinate, treat it as if 3123 // it was a request to scroll to 0 3124 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3125 return true; 3126 } else { 3127 return false; 3128 } 3129 } 3130 3131 // scale from content to view coordinates, and pin 3132 private void spawnContentScrollTo(int cx, int cy) { 3133 if (mDrawHistory) { 3134 // disallow WebView to change the scroll position as History Picture 3135 // is used in the view system. 3136 return; 3137 } 3138 int vx = contentToViewX(cx); 3139 int vy = contentToViewY(cy); 3140 pinScrollTo(vx, vy, true, 0); 3141 } 3142 3143 /** 3144 * These are from webkit, and are in content coordinate system (unzoomed) 3145 */ 3146 private void contentSizeChanged(boolean updateLayout) { 3147 // suppress 0,0 since we usually see real dimensions soon after 3148 // this avoids drawing the prev content in a funny place. If we find a 3149 // way to consolidate these notifications, this check may become 3150 // obsolete 3151 if ((mContentWidth | mContentHeight) == 0) { 3152 return; 3153 } 3154 3155 if (mHeightCanMeasure) { 3156 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3157 || updateLayout) { 3158 requestLayout(); 3159 } 3160 } else if (mWidthCanMeasure) { 3161 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3162 || updateLayout) { 3163 requestLayout(); 3164 } 3165 } else { 3166 // If we don't request a layout, try to send our view size to the 3167 // native side to ensure that WebCore has the correct dimensions. 3168 sendViewSizeZoom(); 3169 } 3170 } 3171 3172 /** 3173 * Set the WebViewClient that will receive various notifications and 3174 * requests. This will replace the current handler. 3175 * @param client An implementation of WebViewClient. 3176 */ 3177 public void setWebViewClient(WebViewClient client) { 3178 mCallbackProxy.setWebViewClient(client); 3179 } 3180 3181 /** 3182 * Gets the WebViewClient 3183 * @return the current WebViewClient instance. 3184 * 3185 *@hide pending API council approval. 3186 */ 3187 public WebViewClient getWebViewClient() { 3188 return mCallbackProxy.getWebViewClient(); 3189 } 3190 3191 /** 3192 * Register the interface to be used when content can not be handled by 3193 * the rendering engine, and should be downloaded instead. This will replace 3194 * the current handler. 3195 * @param listener An implementation of DownloadListener. 3196 */ 3197 public void setDownloadListener(DownloadListener listener) { 3198 mCallbackProxy.setDownloadListener(listener); 3199 } 3200 3201 /** 3202 * Set the chrome handler. This is an implementation of WebChromeClient for 3203 * use in handling Javascript dialogs, favicons, titles, and the progress. 3204 * This will replace the current handler. 3205 * @param client An implementation of WebChromeClient. 3206 */ 3207 public void setWebChromeClient(WebChromeClient client) { 3208 mCallbackProxy.setWebChromeClient(client); 3209 } 3210 3211 /** 3212 * Gets the chrome handler. 3213 * @return the current WebChromeClient instance. 3214 * 3215 * @hide API council approval. 3216 */ 3217 public WebChromeClient getWebChromeClient() { 3218 return mCallbackProxy.getWebChromeClient(); 3219 } 3220 3221 /** 3222 * Set the back/forward list client. This is an implementation of 3223 * WebBackForwardListClient for handling new items and changes in the 3224 * history index. 3225 * @param client An implementation of WebBackForwardListClient. 3226 * {@hide} 3227 */ 3228 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3229 mCallbackProxy.setWebBackForwardListClient(client); 3230 } 3231 3232 /** 3233 * Gets the WebBackForwardListClient. 3234 * {@hide} 3235 */ 3236 public WebBackForwardListClient getWebBackForwardListClient() { 3237 return mCallbackProxy.getWebBackForwardListClient(); 3238 } 3239 3240 /** 3241 * Set the Picture listener. This is an interface used to receive 3242 * notifications of a new Picture. 3243 * @param listener An implementation of WebView.PictureListener. 3244 */ 3245 public void setPictureListener(PictureListener listener) { 3246 mPictureListener = listener; 3247 } 3248 3249 /** 3250 * {@hide} 3251 */ 3252 /* FIXME: Debug only! Remove for SDK! */ 3253 public void externalRepresentation(Message callback) { 3254 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3255 } 3256 3257 /** 3258 * {@hide} 3259 */ 3260 /* FIXME: Debug only! Remove for SDK! */ 3261 public void documentAsText(Message callback) { 3262 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3263 } 3264 3265 /** 3266 * Use this function to bind an object to Javascript so that the 3267 * methods can be accessed from Javascript. 3268 * <p><strong>IMPORTANT:</strong> 3269 * <ul> 3270 * <li> Using addJavascriptInterface() allows JavaScript to control your 3271 * application. This can be a very useful feature or a dangerous security 3272 * issue. When the HTML in the WebView is untrustworthy (for example, part 3273 * or all of the HTML is provided by some person or process), then an 3274 * attacker could inject HTML that will execute your code and possibly any 3275 * code of the attacker's choosing.<br> 3276 * Do not use addJavascriptInterface() unless all of the HTML in this 3277 * WebView was written by you.</li> 3278 * <li> The Java object that is bound runs in another thread and not in 3279 * the thread that it was constructed in.</li> 3280 * </ul></p> 3281 * @param obj The class instance to bind to Javascript 3282 * @param interfaceName The name to used to expose the class in Javascript 3283 */ 3284 public void addJavascriptInterface(Object obj, String interfaceName) { 3285 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3286 arg.mObject = obj; 3287 arg.mInterfaceName = interfaceName; 3288 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3289 } 3290 3291 /** 3292 * Return the WebSettings object used to control the settings for this 3293 * WebView. 3294 * @return A WebSettings object that can be used to control this WebView's 3295 * settings. 3296 */ 3297 public WebSettings getSettings() { 3298 return mWebViewCore.getSettings(); 3299 } 3300 3301 /** 3302 * Use this method to inform the webview about packages that are installed 3303 * in the system. This information will be used by the 3304 * navigator.isApplicationInstalled() API. 3305 * @param packageNames is a set of package names that are known to be 3306 * installed in the system. 3307 * 3308 * @hide not a public API 3309 */ 3310 public void addPackageNames(Set<String> packageNames) { 3311 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 3312 } 3313 3314 /** 3315 * Use this method to inform the webview about single packages that are 3316 * installed in the system. This information will be used by the 3317 * navigator.isApplicationInstalled() API. 3318 * @param packageName is the name of a package that is known to be 3319 * installed in the system. 3320 * 3321 * @hide not a public API 3322 */ 3323 public void addPackageName(String packageName) { 3324 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3325 } 3326 3327 /** 3328 * Use this method to inform the webview about packages that are uninstalled 3329 * in the system. This information will be used by the 3330 * navigator.isApplicationInstalled() API. 3331 * @param packageName is the name of a package that has been uninstalled in 3332 * the system. 3333 * 3334 * @hide not a public API 3335 */ 3336 public void removePackageName(String packageName) { 3337 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3338 } 3339 3340 /** 3341 * Return the list of currently loaded plugins. 3342 * @return The list of currently loaded plugins. 3343 * 3344 * @deprecated This was used for Gears, which has been deprecated. 3345 */ 3346 @Deprecated 3347 public static synchronized PluginList getPluginList() { 3348 return new PluginList(); 3349 } 3350 3351 /** 3352 * @deprecated This was used for Gears, which has been deprecated. 3353 */ 3354 @Deprecated 3355 public void refreshPlugins(boolean reloadOpenPages) { } 3356 3357 //------------------------------------------------------------------------- 3358 // Override View methods 3359 //------------------------------------------------------------------------- 3360 3361 @Override 3362 protected void finalize() throws Throwable { 3363 try { 3364 destroy(); 3365 } finally { 3366 super.finalize(); 3367 } 3368 } 3369 3370 @Override 3371 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3372 if (child == mTitleBar) { 3373 // When drawing the title bar, move it horizontally to always show 3374 // at the top of the WebView. 3375 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3376 } 3377 return super.drawChild(canvas, child, drawingTime); 3378 } 3379 3380 private void drawContent(Canvas canvas) { 3381 // Update the buttons in the picture, so when we draw the picture 3382 // to the screen, they are in the correct state. 3383 // Tell the native side if user is a) touching the screen, 3384 // b) pressing the trackball down, or c) pressing the enter key 3385 // If the cursor is on a button, we need to draw it in the pressed 3386 // state. 3387 // If mNativeClass is 0, we should not reach here, so we do not 3388 // need to check it again. 3389 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3390 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3391 || mTrackballDown || mGotCenterDown, false); 3392 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3393 } 3394 3395 @Override 3396 protected void onDraw(Canvas canvas) { 3397 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3398 if (mNativeClass == 0) { 3399 return; 3400 } 3401 3402 // if both mContentWidth and mContentHeight are 0, it means there is no 3403 // valid Picture passed to WebView yet. This can happen when WebView 3404 // just starts. Draw the background and return. 3405 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3406 canvas.drawColor(mBackgroundColor); 3407 return; 3408 } 3409 3410 int saveCount = canvas.save(); 3411 if (mInOverScrollMode && !getSettings() 3412 .getUseWebViewBackgroundForOverscrollBackground()) { 3413 if (mOverScrollBackground == null) { 3414 mOverScrollBackground = new Paint(); 3415 Bitmap bm = BitmapFactory.decodeResource( 3416 mContext.getResources(), 3417 com.android.internal.R.drawable.status_bar_background); 3418 mOverScrollBackground.setShader(new BitmapShader(bm, 3419 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3420 mOverScrollBorder = new Paint(); 3421 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3422 mOverScrollBorder.setStrokeWidth(0); 3423 mOverScrollBorder.setColor(0xffbbbbbb); 3424 } 3425 3426 int top = 0; 3427 int right = computeRealHorizontalScrollRange(); 3428 int bottom = top + computeRealVerticalScrollRange(); 3429 // first draw the background and anchor to the top of the view 3430 canvas.save(); 3431 canvas.translate(mScrollX, mScrollY); 3432 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3433 - mScrollY, Region.Op.DIFFERENCE); 3434 canvas.drawPaint(mOverScrollBackground); 3435 canvas.restore(); 3436 // then draw the border 3437 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3438 // next clip the region for the content 3439 canvas.clipRect(0, top, right, bottom); 3440 } 3441 if (mTitleBar != null) { 3442 canvas.translate(0, (int) mTitleBar.getHeight()); 3443 } 3444 if (mDragTrackerHandler == null) { 3445 drawContent(canvas); 3446 } else { 3447 if (!mDragTrackerHandler.draw(canvas)) { 3448 // sometimes the tracker doesn't draw, even though its active 3449 drawContent(canvas); 3450 } 3451 if (mDragTrackerHandler.isFinished()) { 3452 mDragTrackerHandler = null; 3453 } 3454 } 3455 canvas.restoreToCount(saveCount); 3456 3457 // Now draw the shadow. 3458 int titleH = getVisibleTitleHeight(); 3459 if (mTitleBar != null && titleH == 0) { 3460 int height = (int) (5f * getContext().getResources() 3461 .getDisplayMetrics().density); 3462 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3463 mScrollY + height); 3464 mTitleShadow.draw(canvas); 3465 } 3466 3467 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3468 invalidate(); 3469 } 3470 mWebViewCore.signalRepaintDone(); 3471 } 3472 3473 @Override 3474 public void draw(Canvas canvas) { 3475 super.draw(canvas); 3476 if (mEdgeGlowTop != null && drawEdgeGlows(canvas)) { 3477 invalidate(); 3478 } 3479 } 3480 3481 /** 3482 * Draw the glow effect along the sides of the widget. mEdgeGlow* must be non-null. 3483 * 3484 * @param canvas Canvas to draw into, transformed into view coordinates. 3485 * @return true if glow effects are still animating and the view should invalidate again. 3486 */ 3487 private boolean drawEdgeGlows(Canvas canvas) { 3488 final int scrollX = mScrollX; 3489 final int scrollY = mScrollY; 3490 final int width = getWidth(); 3491 int height = getHeight(); 3492 3493 boolean invalidateForGlow = false; 3494 if (!mEdgeGlowTop.isFinished()) { 3495 final int restoreCount = canvas.save(); 3496 3497 canvas.translate(-width / 2 + scrollX, Math.min(0, scrollY)); 3498 mEdgeGlowTop.setSize(width * 2, height); 3499 invalidateForGlow |= mEdgeGlowTop.draw(canvas); 3500 canvas.restoreToCount(restoreCount); 3501 } 3502 if (!mEdgeGlowBottom.isFinished()) { 3503 final int restoreCount = canvas.save(); 3504 3505 canvas.translate(-width / 2 + scrollX, Math.max(computeMaxScrollY(), scrollY) + height); 3506 canvas.rotate(180, width, 0); 3507 mEdgeGlowBottom.setSize(width * 2, height); 3508 invalidateForGlow |= mEdgeGlowBottom.draw(canvas); 3509 canvas.restoreToCount(restoreCount); 3510 } 3511 if (!mEdgeGlowLeft.isFinished()) { 3512 final int restoreCount = canvas.save(); 3513 3514 canvas.rotate(270); 3515 canvas.translate(-height * 1.5f - scrollY, Math.min(0, scrollX)); 3516 mEdgeGlowLeft.setSize(height * 2, width); 3517 invalidateForGlow |= mEdgeGlowLeft.draw(canvas); 3518 canvas.restoreToCount(restoreCount); 3519 } 3520 if (!mEdgeGlowRight.isFinished()) { 3521 final int restoreCount = canvas.save(); 3522 3523 canvas.rotate(90); 3524 canvas.translate(-height / 2 + scrollY, 3525 -(Math.max(computeMaxScrollX(), scrollX) + width)); 3526 mEdgeGlowRight.setSize(height * 2, width); 3527 invalidateForGlow |= mEdgeGlowRight.draw(canvas); 3528 canvas.restoreToCount(restoreCount); 3529 } 3530 return invalidateForGlow; 3531 } 3532 3533 @Override 3534 public void setLayoutParams(ViewGroup.LayoutParams params) { 3535 if (params.height == LayoutParams.WRAP_CONTENT) { 3536 mWrapContent = true; 3537 } 3538 super.setLayoutParams(params); 3539 } 3540 3541 @Override 3542 public boolean performLongClick() { 3543 // performLongClick() is the result of a delayed message. If we switch 3544 // to windows overview, the WebView will be temporarily removed from the 3545 // view system. In that case, do nothing. 3546 if (getParent() == null) return false; 3547 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3548 // Send the click so that the textfield is in focus 3549 centerKeyPressOnTextField(); 3550 rebuildWebTextView(); 3551 } else { 3552 clearTextEntry(true); 3553 } 3554 if (inEditingMode()) { 3555 return mWebTextView.performLongClick(); 3556 } 3557 /* if long click brings up a context menu, the super function 3558 * returns true and we're done. Otherwise, nothing happened when 3559 * the user clicked. */ 3560 if (super.performLongClick()) { 3561 return true; 3562 } 3563 /* In the case where the application hasn't already handled the long 3564 * click action, look for a word under the click. If one is found, 3565 * animate the text selection into view. 3566 * FIXME: no animation code yet */ 3567 if (mSelectingText) return false; // long click does nothing on selection 3568 int x = viewToContentX((int) mLastTouchX + mScrollX); 3569 int y = viewToContentY((int) mLastTouchY + mScrollY); 3570 setUpSelect(); 3571 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3572 nativeSetExtendSelection(); 3573 WebChromeClient client = getWebChromeClient(); 3574 if (client != null) client.onSelectionStart(this); 3575 return true; 3576 } 3577 notifySelectDialogDismissed(); 3578 return false; 3579 } 3580 3581 boolean inAnimateZoom() { 3582 return mZoomScale != 0; 3583 } 3584 3585 /** 3586 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3587 * has changed. This is especially important for password fields, which are 3588 * drawn by the WebTextView, since it conveys more information than what 3589 * webkit draws. Thus we need to reposition it to show in the correct 3590 * place. 3591 */ 3592 private boolean mNeedToAdjustWebTextView; 3593 3594 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3595 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3596 Rect vBox = contentToViewRect(contentBounds); 3597 Rect visibleRect = new Rect(); 3598 calcOurVisibleRect(visibleRect); 3599 // If the textfield is on screen, place the WebTextView in 3600 // its new place, accounting for our new scroll/zoom values, 3601 // and adjust its textsize. 3602 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3603 : visibleRect.contains(vBox)) { 3604 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3605 vBox.height()); 3606 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3607 contentToViewDimension( 3608 nativeFocusCandidateTextSize())); 3609 return true; 3610 } else { 3611 // The textfield is now off screen. The user probably 3612 // was not zooming to see the textfield better. Remove 3613 // the WebTextView. If the user types a key, and the 3614 // textfield is still in focus, we will reconstruct 3615 // the WebTextView and scroll it back on screen. 3616 mWebTextView.remove(); 3617 return false; 3618 } 3619 } 3620 3621 private void drawExtras(Canvas canvas, int extras, boolean animationsRunning) { 3622 // If mNativeClass is 0, we should not reach here, so we do not 3623 // need to check it again. 3624 if (animationsRunning) { 3625 canvas.setDrawFilter(mWebViewCore.mZoomFilter); 3626 } 3627 nativeDrawExtras(canvas, extras); 3628 canvas.setDrawFilter(null); 3629 } 3630 3631 private void drawCoreAndCursorRing(Canvas canvas, int color, 3632 boolean drawCursorRing) { 3633 if (mDrawHistory) { 3634 canvas.scale(mActualScale, mActualScale); 3635 canvas.drawPicture(mHistoryPicture); 3636 return; 3637 } 3638 3639 boolean animateZoom = mZoomScale != 0; 3640 boolean animateScroll = ((!mScroller.isFinished() 3641 || mVelocityTracker != null) 3642 && (mTouchMode != TOUCH_DRAG_MODE || 3643 mHeldMotionless != MOTIONLESS_TRUE)) 3644 || mDeferTouchMode == TOUCH_DRAG_MODE; 3645 if (mTouchMode == TOUCH_DRAG_MODE) { 3646 if (mHeldMotionless == MOTIONLESS_PENDING) { 3647 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3648 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3649 mHeldMotionless = MOTIONLESS_FALSE; 3650 } 3651 if (mHeldMotionless == MOTIONLESS_FALSE) { 3652 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3653 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3654 mHeldMotionless = MOTIONLESS_PENDING; 3655 } 3656 } 3657 if (animateZoom) { 3658 float zoomScale; 3659 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3660 if (interval < ZOOM_ANIMATION_LENGTH) { 3661 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3662 zoomScale = 1.0f / (mInvInitialZoomScale 3663 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3664 invalidate(); 3665 } else { 3666 zoomScale = mZoomScale; 3667 // set mZoomScale to be 0 as we have done animation 3668 mZoomScale = 0; 3669 WebViewCore.resumeUpdatePicture(mWebViewCore); 3670 // call invalidate() again to draw with the final filters 3671 invalidate(); 3672 if (mNeedToAdjustWebTextView) { 3673 mNeedToAdjustWebTextView = false; 3674 if (didUpdateTextViewBounds(false) 3675 && nativeFocusCandidateIsPassword()) { 3676 // If it is a password field, start drawing the 3677 // WebTextView once again. 3678 mWebTextView.setInPassword(true); 3679 } 3680 } 3681 } 3682 // calculate the intermediate scroll position. As we need to use 3683 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3684 float scale = zoomScale * mInvInitialZoomScale; 3685 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3686 - mZoomCenterX); 3687 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3688 * zoomScale)) + mScrollX; 3689 int titleHeight = getTitleHeight(); 3690 int ty = Math.round(scale 3691 * (mInitialScrollY + mZoomCenterY - titleHeight) 3692 - (mZoomCenterY - titleHeight)); 3693 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3694 - titleHeight, getViewHeight(), Math.round(mContentHeight 3695 * zoomScale)) + titleHeight) + mScrollY; 3696 canvas.translate(tx, ty); 3697 canvas.scale(zoomScale, zoomScale); 3698 if (inEditingMode() && !mNeedToAdjustWebTextView 3699 && mZoomScale != 0) { 3700 // The WebTextView is up. Keep track of this so we can adjust 3701 // its size and placement when we finish zooming 3702 mNeedToAdjustWebTextView = true; 3703 // If it is in password mode, turn it off so it does not draw 3704 // misplaced. 3705 if (nativeFocusCandidateIsPassword()) { 3706 mWebTextView.setInPassword(false); 3707 } 3708 } 3709 } else { 3710 canvas.scale(mActualScale, mActualScale); 3711 } 3712 3713 boolean UIAnimationsRunning = false; 3714 // Currently for each draw we compute the animation values; 3715 // We may in the future decide to do that independently. 3716 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3717 UIAnimationsRunning = true; 3718 // If we have unfinished (or unstarted) animations, 3719 // we ask for a repaint. 3720 invalidate(); 3721 } 3722 mWebViewCore.drawContentPicture(canvas, color, 3723 (animateZoom || mPreviewZoomOnly || UIAnimationsRunning), 3724 animateScroll); 3725 if (mNativeClass == 0) return; 3726 // decide which adornments to draw 3727 int extras = DRAW_EXTRAS_NONE; 3728 if (mFindIsUp) { 3729 extras = DRAW_EXTRAS_FIND; 3730 } else if (mSelectingText) { 3731 extras = DRAW_EXTRAS_SELECTION; 3732 nativeSetSelectionPointer(mDrawSelectionPointer, 3733 mInvActualScale, 3734 mSelectX, mSelectY - getTitleHeight()); 3735 } else if (drawCursorRing) { 3736 extras = DRAW_EXTRAS_CURSOR_RING; 3737 } 3738 drawExtras(canvas, extras, UIAnimationsRunning); 3739 3740 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3741 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3742 mTouchMode = TOUCH_SHORTPRESS_MODE; 3743 } 3744 } 3745 if (mFocusSizeChanged) { 3746 mFocusSizeChanged = false; 3747 // If we are zooming, this will get handled above, when the zoom 3748 // finishes. We also do not need to do this unless the WebTextView 3749 // is showing. 3750 if (!animateZoom && inEditingMode()) { 3751 didUpdateTextViewBounds(true); 3752 } 3753 } 3754 } 3755 3756 // draw history 3757 private boolean mDrawHistory = false; 3758 private Picture mHistoryPicture = null; 3759 private int mHistoryWidth = 0; 3760 private int mHistoryHeight = 0; 3761 3762 // Only check the flag, can be called from WebCore thread 3763 boolean drawHistory() { 3764 return mDrawHistory; 3765 } 3766 3767 // Should only be called in UI thread 3768 void switchOutDrawHistory() { 3769 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3770 if (mDrawHistory && mWebViewCore.pictureReady()) { 3771 mDrawHistory = false; 3772 mHistoryPicture = null; 3773 invalidate(); 3774 int oldScrollX = mScrollX; 3775 int oldScrollY = mScrollY; 3776 mScrollX = pinLocX(mScrollX); 3777 mScrollY = pinLocY(mScrollY); 3778 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3779 mUserScroll = false; 3780 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3781 oldScrollY); 3782 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3783 } else { 3784 sendOurVisibleRect(); 3785 } 3786 } 3787 } 3788 3789 WebViewCore.CursorData cursorData() { 3790 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3791 result.mMoveGeneration = nativeMoveGeneration(); 3792 result.mFrame = nativeCursorFramePointer(); 3793 Point position = nativeCursorPosition(); 3794 result.mX = position.x; 3795 result.mY = position.y; 3796 return result; 3797 } 3798 3799 /** 3800 * Delete text from start to end in the focused textfield. If there is no 3801 * focus, or if start == end, silently fail. If start and end are out of 3802 * order, swap them. 3803 * @param start Beginning of selection to delete. 3804 * @param end End of selection to delete. 3805 */ 3806 /* package */ void deleteSelection(int start, int end) { 3807 mTextGeneration++; 3808 WebViewCore.TextSelectionData data 3809 = new WebViewCore.TextSelectionData(start, end); 3810 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3811 data); 3812 } 3813 3814 /** 3815 * Set the selection to (start, end) in the focused textfield. If start and 3816 * end are out of order, swap them. 3817 * @param start Beginning of selection. 3818 * @param end End of selection. 3819 */ 3820 /* package */ void setSelection(int start, int end) { 3821 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3822 } 3823 3824 @Override 3825 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3826 InputConnection connection = super.onCreateInputConnection(outAttrs); 3827 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3828 return connection; 3829 } 3830 3831 /** 3832 * Called in response to a message from webkit telling us that the soft 3833 * keyboard should be launched. 3834 */ 3835 private void displaySoftKeyboard(boolean isTextView) { 3836 InputMethodManager imm = (InputMethodManager) 3837 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3838 3839 // bring it back to the default scale so that user can enter text 3840 boolean zoom = mActualScale < mDefaultScale; 3841 if (zoom) { 3842 mInZoomOverview = false; 3843 mZoomCenterX = mLastTouchX; 3844 mZoomCenterY = mLastTouchY; 3845 // do not change text wrap scale so that there is no reflow 3846 setNewZoomScale(mDefaultScale, false, false); 3847 } 3848 if (isTextView) { 3849 rebuildWebTextView(); 3850 if (inEditingMode()) { 3851 imm.showSoftInput(mWebTextView, 0); 3852 if (zoom) { 3853 didUpdateTextViewBounds(true); 3854 } 3855 return; 3856 } 3857 } 3858 // Used by plugins. 3859 // Also used if the navigation cache is out of date, and 3860 // does not recognize that a textfield is in focus. In that 3861 // case, use WebView as the targeted view. 3862 // see http://b/issue?id=2457459 3863 imm.showSoftInput(this, 0); 3864 } 3865 3866 // Called by WebKit to instruct the UI to hide the keyboard 3867 private void hideSoftKeyboard() { 3868 InputMethodManager imm = (InputMethodManager) 3869 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3870 3871 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3872 } 3873 3874 /* 3875 * This method checks the current focus and cursor and potentially rebuilds 3876 * mWebTextView to have the appropriate properties, such as password, 3877 * multiline, and what text it contains. It also removes it if necessary. 3878 */ 3879 /* package */ void rebuildWebTextView() { 3880 // If the WebView does not have focus, do nothing until it gains focus. 3881 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3882 return; 3883 } 3884 boolean alreadyThere = inEditingMode(); 3885 // inEditingMode can only return true if mWebTextView is non-null, 3886 // so we can safely call remove() if (alreadyThere) 3887 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3888 if (alreadyThere) { 3889 mWebTextView.remove(); 3890 } 3891 return; 3892 } 3893 // At this point, we know we have found an input field, so go ahead 3894 // and create the WebTextView if necessary. 3895 if (mWebTextView == null) { 3896 mWebTextView = new WebTextView(mContext, WebView.this); 3897 // Initialize our generation number. 3898 mTextGeneration = 0; 3899 } 3900 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3901 contentToViewDimension(nativeFocusCandidateTextSize())); 3902 Rect visibleRect = new Rect(); 3903 calcOurContentVisibleRect(visibleRect); 3904 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3905 // should be in content coordinates. 3906 Rect bounds = nativeFocusCandidateNodeBounds(); 3907 Rect vBox = contentToViewRect(bounds); 3908 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3909 if (!Rect.intersects(bounds, visibleRect)) { 3910 mWebTextView.bringIntoView(); 3911 } 3912 String text = nativeFocusCandidateText(); 3913 int nodePointer = nativeFocusCandidatePointer(); 3914 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3915 // It is possible that we have the same textfield, but it has moved, 3916 // i.e. In the case of opening/closing the screen. 3917 // In that case, we need to set the dimensions, but not the other 3918 // aspects. 3919 // If the text has been changed by webkit, update it. However, if 3920 // there has been more UI text input, ignore it. We will receive 3921 // another update when that text is recognized. 3922 if (text != null && !text.equals(mWebTextView.getText().toString()) 3923 && nativeTextGeneration() == mTextGeneration) { 3924 mWebTextView.setTextAndKeepSelection(text); 3925 } 3926 } else { 3927 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3928 Gravity.RIGHT : Gravity.NO_GRAVITY); 3929 // This needs to be called before setType, which may call 3930 // requestFormData, and it needs to have the correct nodePointer. 3931 mWebTextView.setNodePointer(nodePointer); 3932 mWebTextView.setType(nativeFocusCandidateType()); 3933 if (null == text) { 3934 if (DebugFlags.WEB_VIEW) { 3935 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3936 } 3937 text = ""; 3938 } 3939 mWebTextView.setTextAndKeepSelection(text); 3940 InputMethodManager imm = InputMethodManager.peekInstance(); 3941 if (imm != null && imm.isActive(mWebTextView)) { 3942 imm.restartInput(mWebTextView); 3943 } 3944 } 3945 mWebTextView.requestFocus(); 3946 } 3947 3948 /** 3949 * Called by WebTextView to find saved form data associated with the 3950 * textfield 3951 * @param name Name of the textfield. 3952 * @param nodePointer Pointer to the node of the textfield, so it can be 3953 * compared to the currently focused textfield when the data is 3954 * retrieved. 3955 */ 3956 /* package */ void requestFormData(String name, int nodePointer) { 3957 if (mWebViewCore.getSettings().getSaveFormData()) { 3958 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3959 update.arg1 = nodePointer; 3960 RequestFormData updater = new RequestFormData(name, getUrl(), 3961 update); 3962 Thread t = new Thread(updater); 3963 t.start(); 3964 } 3965 } 3966 3967 /** 3968 * Pass a message to find out the <label> associated with the <input> 3969 * identified by nodePointer 3970 * @param framePointer Pointer to the frame containing the <input> node 3971 * @param nodePointer Pointer to the node for which a <label> is desired. 3972 */ 3973 /* package */ void requestLabel(int framePointer, int nodePointer) { 3974 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3975 nodePointer); 3976 } 3977 3978 /* 3979 * This class requests an Adapter for the WebTextView which shows past 3980 * entries stored in the database. It is a Runnable so that it can be done 3981 * in its own thread, without slowing down the UI. 3982 */ 3983 private class RequestFormData implements Runnable { 3984 private String mName; 3985 private String mUrl; 3986 private Message mUpdateMessage; 3987 3988 public RequestFormData(String name, String url, Message msg) { 3989 mName = name; 3990 mUrl = url; 3991 mUpdateMessage = msg; 3992 } 3993 3994 public void run() { 3995 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3996 if (pastEntries.size() > 0) { 3997 AutoCompleteAdapter adapter = new 3998 AutoCompleteAdapter(mContext, pastEntries); 3999 mUpdateMessage.obj = adapter; 4000 mUpdateMessage.sendToTarget(); 4001 } 4002 } 4003 } 4004 4005 /** 4006 * Dump the display tree to "/sdcard/displayTree.txt" 4007 * 4008 * @hide debug only 4009 */ 4010 public void dumpDisplayTree() { 4011 nativeDumpDisplayTree(getUrl()); 4012 } 4013 4014 /** 4015 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4016 * "/sdcard/domTree.txt" 4017 * 4018 * @hide debug only 4019 */ 4020 public void dumpDomTree(boolean toFile) { 4021 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4022 } 4023 4024 /** 4025 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4026 * to "/sdcard/renderTree.txt" 4027 * 4028 * @hide debug only 4029 */ 4030 public void dumpRenderTree(boolean toFile) { 4031 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4032 } 4033 4034 /** 4035 * Dump the V8 counters to standard output. 4036 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4037 * true. Otherwise, this will do nothing. 4038 * 4039 * @hide debug only 4040 */ 4041 public void dumpV8Counters() { 4042 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4043 } 4044 4045 // This is used to determine long press with the center key. Does not 4046 // affect long press with the trackball/touch. 4047 private boolean mGotCenterDown = false; 4048 4049 @Override 4050 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4051 // send complex characters to webkit for use by JS and plugins 4052 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4053 // pass the key to DOM 4054 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4055 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4056 // return true as DOM handles the key 4057 return true; 4058 } 4059 return false; 4060 } 4061 4062 @Override 4063 public boolean onKeyDown(int keyCode, KeyEvent event) { 4064 if (DebugFlags.WEB_VIEW) { 4065 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4066 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4067 } 4068 4069 if (mNativeClass == 0) { 4070 return false; 4071 } 4072 4073 // do this hack up front, so it always works, regardless of touch-mode 4074 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4075 mAutoRedraw = !mAutoRedraw; 4076 if (mAutoRedraw) { 4077 invalidate(); 4078 } 4079 return true; 4080 } 4081 4082 // Bubble up the key event if 4083 // 1. it is a system key; or 4084 // 2. the host application wants to handle it; 4085 if (event.isSystem() 4086 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4087 return false; 4088 } 4089 4090 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4091 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4092 if (nativeFocusIsPlugin()) { 4093 mShiftIsPressed = true; 4094 } else if (!nativeCursorWantsKeyEvents() && !mSelectingText) { 4095 setUpSelect(); 4096 } 4097 } 4098 4099 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4100 pageUp(false); 4101 return true; 4102 } 4103 4104 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4105 pageDown(false); 4106 return true; 4107 } 4108 4109 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4110 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4111 switchOutDrawHistory(); 4112 if (nativeFocusIsPlugin()) { 4113 letPluginHandleNavKey(keyCode, event.getEventTime(), true); 4114 return true; 4115 } 4116 if (mSelectingText) { 4117 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4118 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4119 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4120 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4121 int multiplier = event.getRepeatCount() + 1; 4122 moveSelection(xRate * multiplier, yRate * multiplier); 4123 return true; 4124 } 4125 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4126 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4127 return true; 4128 } 4129 // Bubble up the key event as WebView doesn't handle it 4130 return false; 4131 } 4132 4133 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4134 switchOutDrawHistory(); 4135 if (event.getRepeatCount() == 0) { 4136 if (mSelectingText) { 4137 return true; // discard press if copy in progress 4138 } 4139 mGotCenterDown = true; 4140 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4141 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4142 // Already checked mNativeClass, so we do not need to check it 4143 // again. 4144 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4145 return true; 4146 } 4147 // Bubble up the key event as WebView doesn't handle it 4148 return false; 4149 } 4150 4151 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 4152 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 4153 // turn off copy select if a shift-key combo is pressed 4154 selectionDone(); 4155 mShiftIsPressed = false; 4156 } 4157 4158 if (getSettings().getNavDump()) { 4159 switch (keyCode) { 4160 case KeyEvent.KEYCODE_4: 4161 dumpDisplayTree(); 4162 break; 4163 case KeyEvent.KEYCODE_5: 4164 case KeyEvent.KEYCODE_6: 4165 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4166 break; 4167 case KeyEvent.KEYCODE_7: 4168 case KeyEvent.KEYCODE_8: 4169 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4170 break; 4171 case KeyEvent.KEYCODE_9: 4172 nativeInstrumentReport(); 4173 return true; 4174 } 4175 } 4176 4177 if (nativeCursorIsTextInput()) { 4178 // This message will put the node in focus, for the DOM's notion 4179 // of focus, and make the focuscontroller active 4180 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 4181 nativeCursorNodePointer()); 4182 // This will bring up the WebTextView and put it in focus, for 4183 // our view system's notion of focus 4184 rebuildWebTextView(); 4185 // Now we need to pass the event to it 4186 if (inEditingMode()) { 4187 mWebTextView.setDefaultSelection(); 4188 return mWebTextView.dispatchKeyEvent(event); 4189 } 4190 } else if (nativeHasFocusNode()) { 4191 // In this case, the cursor is not on a text input, but the focus 4192 // might be. Check it, and if so, hand over to the WebTextView. 4193 rebuildWebTextView(); 4194 if (inEditingMode()) { 4195 mWebTextView.setDefaultSelection(); 4196 return mWebTextView.dispatchKeyEvent(event); 4197 } 4198 } 4199 4200 // TODO: should we pass all the keys to DOM or check the meta tag 4201 if (nativeCursorWantsKeyEvents() || true) { 4202 // pass the key to DOM 4203 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4204 // return true as DOM handles the key 4205 return true; 4206 } 4207 4208 // Bubble up the key event as WebView doesn't handle it 4209 return false; 4210 } 4211 4212 @Override 4213 public boolean onKeyUp(int keyCode, KeyEvent event) { 4214 if (DebugFlags.WEB_VIEW) { 4215 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4216 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4217 } 4218 4219 if (mNativeClass == 0) { 4220 return false; 4221 } 4222 4223 // special CALL handling when cursor node's href is "tel:XXX" 4224 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4225 String text = nativeCursorText(); 4226 if (!nativeCursorIsTextInput() && text != null 4227 && text.startsWith(SCHEME_TEL)) { 4228 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4229 getContext().startActivity(intent); 4230 return true; 4231 } 4232 } 4233 4234 // Bubble up the key event if 4235 // 1. it is a system key; or 4236 // 2. the host application wants to handle it; 4237 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 4238 return false; 4239 } 4240 4241 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4242 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4243 if (nativeFocusIsPlugin()) { 4244 mShiftIsPressed = false; 4245 } else if (copySelection()) { 4246 selectionDone(); 4247 return true; 4248 } 4249 } 4250 4251 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4252 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4253 if (nativeFocusIsPlugin()) { 4254 letPluginHandleNavKey(keyCode, event.getEventTime(), false); 4255 return true; 4256 } 4257 // always handle the navigation keys in the UI thread 4258 // Bubble up the key event as WebView doesn't handle it 4259 return false; 4260 } 4261 4262 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4263 // remove the long press message first 4264 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4265 mGotCenterDown = false; 4266 4267 if (mSelectingText) { 4268 if (mExtendSelection) { 4269 copySelection(); 4270 selectionDone(); 4271 } else { 4272 mExtendSelection = true; 4273 nativeSetExtendSelection(); 4274 invalidate(); // draw the i-beam instead of the arrow 4275 } 4276 return true; // discard press if copy in progress 4277 } 4278 4279 // perform the single click 4280 Rect visibleRect = sendOurVisibleRect(); 4281 // Note that sendOurVisibleRect calls viewToContent, so the 4282 // coordinates should be in content coordinates. 4283 if (!nativeCursorIntersects(visibleRect)) { 4284 return false; 4285 } 4286 WebViewCore.CursorData data = cursorData(); 4287 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4288 playSoundEffect(SoundEffectConstants.CLICK); 4289 if (nativeCursorIsTextInput()) { 4290 rebuildWebTextView(); 4291 centerKeyPressOnTextField(); 4292 if (inEditingMode()) { 4293 mWebTextView.setDefaultSelection(); 4294 } 4295 return true; 4296 } 4297 clearTextEntry(true); 4298 nativeSetFollowedLink(true); 4299 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4300 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4301 nativeCursorNodePointer()); 4302 } 4303 return true; 4304 } 4305 4306 // TODO: should we pass all the keys to DOM or check the meta tag 4307 if (nativeCursorWantsKeyEvents() || true) { 4308 // pass the key to DOM 4309 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4310 // return true as DOM handles the key 4311 return true; 4312 } 4313 4314 // Bubble up the key event as WebView doesn't handle it 4315 return false; 4316 } 4317 4318 /** 4319 * @hide pending API council approval. 4320 */ 4321 public void setUpSelect() { 4322 if (0 == mNativeClass) return; // client isn't initialized 4323 if (inFullScreenMode()) return; 4324 if (mSelectingText) return; 4325 mExtendSelection = false; 4326 mSelectingText = mDrawSelectionPointer = true; 4327 // don't let the picture change during text selection 4328 WebViewCore.pauseUpdatePicture(mWebViewCore); 4329 nativeResetSelection(); 4330 if (nativeHasCursorNode()) { 4331 Rect rect = nativeCursorNodeBounds(); 4332 mSelectX = contentToViewX(rect.left); 4333 mSelectY = contentToViewY(rect.top); 4334 } else if (mLastTouchY > getVisibleTitleHeight()) { 4335 mSelectX = mScrollX + (int) mLastTouchX; 4336 mSelectY = mScrollY + (int) mLastTouchY; 4337 } else { 4338 mSelectX = mScrollX + getViewWidth() / 2; 4339 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4340 } 4341 nativeHideCursor(); 4342 } 4343 4344 /** 4345 * Use this method to put the WebView into text selection mode. 4346 * Do not rely on this functionality; it will be deprecated in the future. 4347 */ 4348 public void emulateShiftHeld() { 4349 setUpSelect(); 4350 } 4351 4352 /** 4353 * @hide pending API council approval. 4354 */ 4355 public void selectAll() { 4356 if (0 == mNativeClass) return; // client isn't initialized 4357 if (inFullScreenMode()) return; 4358 if (!mSelectingText) setUpSelect(); 4359 nativeSelectAll(); 4360 mDrawSelectionPointer = false; 4361 mExtendSelection = true; 4362 invalidate(); 4363 } 4364 4365 /** 4366 * @hide pending API council approval. 4367 */ 4368 public boolean selectDialogIsUp() { 4369 return mSelectingText; 4370 } 4371 4372 /** 4373 * @hide pending API council approval. 4374 */ 4375 public void notifySelectDialogDismissed() { 4376 mSelectingText = false; 4377 WebViewCore.resumeUpdatePicture(mWebViewCore); 4378 } 4379 4380 /** 4381 * @hide pending API council approval. 4382 */ 4383 public void selectionDone() { 4384 if (mSelectingText) { 4385 WebChromeClient client = getWebChromeClient(); 4386 if (client != null) client.onSelectionDone(this); 4387 invalidate(); // redraw without selection 4388 notifySelectDialogDismissed(); 4389 } 4390 } 4391 4392 /** 4393 * @hide pending API council approval. 4394 */ 4395 public boolean copySelection() { 4396 boolean copiedSomething = false; 4397 String selection = getSelection(); 4398 if (selection != "") { 4399 if (DebugFlags.WEB_VIEW) { 4400 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4401 } 4402 Toast.makeText(mContext 4403 , com.android.internal.R.string.text_copied 4404 , Toast.LENGTH_SHORT).show(); 4405 copiedSomething = true; 4406 try { 4407 IClipboard clip = IClipboard.Stub.asInterface( 4408 ServiceManager.getService("clipboard")); 4409 clip.setClipboardText(selection); 4410 } catch (android.os.RemoteException e) { 4411 Log.e(LOGTAG, "Clipboard failed", e); 4412 } 4413 } 4414 invalidate(); // remove selection region and pointer 4415 return copiedSomething; 4416 } 4417 4418 /** 4419 * @hide pending API council approval. 4420 */ 4421 public String getSelection() { 4422 if (mNativeClass == 0) return ""; 4423 return nativeGetSelection(); 4424 } 4425 4426 @Override 4427 protected void onAttachedToWindow() { 4428 super.onAttachedToWindow(); 4429 if (hasWindowFocus()) setActive(true); 4430 } 4431 4432 @Override 4433 protected void onDetachedFromWindow() { 4434 clearTextEntry(false); 4435 dismissZoomControl(); 4436 if (hasWindowFocus()) setActive(false); 4437 super.onDetachedFromWindow(); 4438 } 4439 4440 /** 4441 * @deprecated WebView no longer needs to implement 4442 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4443 */ 4444 @Deprecated 4445 public void onChildViewAdded(View parent, View child) {} 4446 4447 /** 4448 * @deprecated WebView no longer needs to implement 4449 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4450 */ 4451 @Deprecated 4452 public void onChildViewRemoved(View p, View child) {} 4453 4454 /** 4455 * @deprecated WebView should not have implemented 4456 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4457 * does nothing now. 4458 */ 4459 @Deprecated 4460 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4461 } 4462 4463 private void setActive(boolean active) { 4464 if (active) { 4465 if (hasFocus()) { 4466 // If our window regained focus, and we have focus, then begin 4467 // drawing the cursor ring 4468 mDrawCursorRing = true; 4469 if (mNativeClass != 0) { 4470 nativeRecordButtons(true, false, true); 4471 if (inEditingMode()) { 4472 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4473 } 4474 } 4475 } else { 4476 // If our window gained focus, but we do not have it, do not 4477 // draw the cursor ring. 4478 mDrawCursorRing = false; 4479 // We do not call nativeRecordButtons here because we assume 4480 // that when we lost focus, or window focus, it got called with 4481 // false for the first parameter 4482 } 4483 } else { 4484 if (mWebViewCore != null && getSettings().getBuiltInZoomControls() 4485 && (mZoomButtonsController == null || 4486 !mZoomButtonsController.isVisible())) { 4487 /* 4488 * The zoom controls come in their own window, so our window 4489 * loses focus. Our policy is to not draw the cursor ring if 4490 * our window is not focused, but this is an exception since 4491 * the user can still navigate the web page with the zoom 4492 * controls showing. 4493 */ 4494 // If our window has lost focus, stop drawing the cursor ring 4495 mDrawCursorRing = false; 4496 } 4497 mGotKeyDown = false; 4498 mShiftIsPressed = false; 4499 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4500 mTouchMode = TOUCH_DONE_MODE; 4501 if (mNativeClass != 0) { 4502 nativeRecordButtons(false, false, true); 4503 } 4504 setFocusControllerInactive(); 4505 } 4506 invalidate(); 4507 } 4508 4509 // To avoid drawing the cursor ring, and remove the TextView when our window 4510 // loses focus. 4511 @Override 4512 public void onWindowFocusChanged(boolean hasWindowFocus) { 4513 setActive(hasWindowFocus); 4514 if (hasWindowFocus) { 4515 BrowserFrame.sJavaBridge.setActiveWebView(this); 4516 } else { 4517 BrowserFrame.sJavaBridge.removeActiveWebView(this); 4518 } 4519 super.onWindowFocusChanged(hasWindowFocus); 4520 } 4521 4522 /* 4523 * Pass a message to WebCore Thread, telling the WebCore::Page's 4524 * FocusController to be "inactive" so that it will 4525 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4526 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4527 */ 4528 /* package */ void setFocusControllerInactive() { 4529 // Do not need to also check whether mWebViewCore is null, because 4530 // mNativeClass is only set if mWebViewCore is non null 4531 if (mNativeClass == 0) return; 4532 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4533 } 4534 4535 @Override 4536 protected void onFocusChanged(boolean focused, int direction, 4537 Rect previouslyFocusedRect) { 4538 if (DebugFlags.WEB_VIEW) { 4539 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4540 } 4541 if (focused) { 4542 // When we regain focus, if we have window focus, resume drawing 4543 // the cursor ring 4544 if (hasWindowFocus()) { 4545 mDrawCursorRing = true; 4546 if (mNativeClass != 0) { 4547 nativeRecordButtons(true, false, true); 4548 } 4549 //} else { 4550 // The WebView has gained focus while we do not have 4551 // windowfocus. When our window lost focus, we should have 4552 // called nativeRecordButtons(false...) 4553 } 4554 } else { 4555 // When we lost focus, unless focus went to the TextView (which is 4556 // true if we are in editing mode), stop drawing the cursor ring. 4557 if (!inEditingMode()) { 4558 mDrawCursorRing = false; 4559 if (mNativeClass != 0) { 4560 nativeRecordButtons(false, false, true); 4561 } 4562 setFocusControllerInactive(); 4563 } 4564 mGotKeyDown = false; 4565 } 4566 4567 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4568 } 4569 4570 /** 4571 * @hide 4572 */ 4573 @Override 4574 protected boolean setFrame(int left, int top, int right, int bottom) { 4575 boolean changed = super.setFrame(left, top, right, bottom); 4576 if (!changed && mHeightCanMeasure) { 4577 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4578 // in WebViewCore after we get the first layout. We do call 4579 // requestLayout() when we get contentSizeChanged(). But the View 4580 // system won't call onSizeChanged if the dimension is not changed. 4581 // In this case, we need to call sendViewSizeZoom() explicitly to 4582 // notify the WebKit about the new dimensions. 4583 sendViewSizeZoom(); 4584 } 4585 return changed; 4586 } 4587 4588 private static class PostScale implements Runnable { 4589 final WebView mWebView; 4590 final boolean mUpdateTextWrap; 4591 4592 public PostScale(WebView webView, boolean updateTextWrap) { 4593 mWebView = webView; 4594 mUpdateTextWrap = updateTextWrap; 4595 } 4596 4597 public void run() { 4598 if (mWebView.mWebViewCore != null) { 4599 // we always force, in case our height changed, in which case we 4600 // still want to send the notification over to webkit. 4601 mWebView.setNewZoomScale(mWebView.mActualScale, 4602 mUpdateTextWrap, true); 4603 // update the zoom buttons as the scale can be changed 4604 if (mWebView.getSettings().getBuiltInZoomControls()) { 4605 mWebView.updateZoomButtonsEnabled(); 4606 } 4607 } 4608 } 4609 } 4610 4611 @Override 4612 protected void onSizeChanged(int w, int h, int ow, int oh) { 4613 super.onSizeChanged(w, h, ow, oh); 4614 // Center zooming to the center of the screen. 4615 if (mZoomScale == 0) { // unless we're already zooming 4616 // To anchor at top left corner. 4617 mZoomCenterX = 0; 4618 mZoomCenterY = getVisibleTitleHeight(); 4619 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4620 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4621 } 4622 4623 // adjust the max viewport width depending on the view dimensions. This 4624 // is to ensure the scaling is not going insane. So do not shrink it if 4625 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4626 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4627 if (newMaxViewportWidth > sMaxViewportWidth) { 4628 sMaxViewportWidth = newMaxViewportWidth; 4629 } 4630 4631 // update mMinZoomScale if the minimum zoom scale is not fixed 4632 if (!mMinZoomScaleFixed) { 4633 // when change from narrow screen to wide screen, the new viewWidth 4634 // can be wider than the old content width. We limit the minimum 4635 // scale to 1.0f. The proper minimum scale will be calculated when 4636 // the new picture shows up. 4637 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4638 / (mDrawHistory ? mHistoryPicture.getWidth() 4639 : mZoomOverviewWidth)); 4640 if (mInitialScaleInPercent > 0) { 4641 // limit the minZoomScale to the initialScale if it is set 4642 float initialScale = mInitialScaleInPercent / 100.0f; 4643 if (mMinZoomScale > initialScale) { 4644 mMinZoomScale = initialScale; 4645 } 4646 } 4647 } 4648 4649 dismissZoomControl(); 4650 4651 // onSizeChanged() is called during WebView layout. And any 4652 // requestLayout() is blocked during layout. As setNewZoomScale() will 4653 // call its child View to reposition itself through ViewManager's 4654 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4655 // <b/> 4656 // only update the text wrap scale if width changed. 4657 post(new PostScale(this, w != ow)); 4658 } 4659 4660 @Override 4661 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4662 super.onScrollChanged(l, t, oldl, oldt); 4663 if (!mInOverScrollMode) { 4664 sendOurVisibleRect(); 4665 // update WebKit if visible title bar height changed. The logic is same 4666 // as getVisibleTitleHeight. 4667 int titleHeight = getTitleHeight(); 4668 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4669 sendViewSizeZoom(); 4670 } 4671 } 4672 } 4673 4674 @Override 4675 public boolean dispatchKeyEvent(KeyEvent event) { 4676 boolean dispatch = true; 4677 4678 // Textfields and plugins need to receive the shift up key even if 4679 // another key was released while the shift key was held down. 4680 if (!inEditingMode() && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 4681 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4682 mGotKeyDown = true; 4683 } else { 4684 if (!mGotKeyDown) { 4685 /* 4686 * We got a key up for which we were not the recipient of 4687 * the original key down. Don't give it to the view. 4688 */ 4689 dispatch = false; 4690 } 4691 mGotKeyDown = false; 4692 } 4693 } 4694 4695 if (dispatch) { 4696 return super.dispatchKeyEvent(event); 4697 } else { 4698 // We didn't dispatch, so let something else handle the key 4699 return false; 4700 } 4701 } 4702 4703 // Here are the snap align logic: 4704 // 1. If it starts nearly horizontally or vertically, snap align; 4705 // 2. If there is a dramitic direction change, let it go; 4706 // 3. If there is a same direction back and forth, lock it. 4707 4708 // adjustable parameters 4709 private int mMinLockSnapReverseDistance; 4710 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4711 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4712 4713 private static int sign(float x) { 4714 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4715 } 4716 4717 // if the page can scroll <= this value, we won't allow the drag tracker 4718 // to have any effect. 4719 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4720 4721 private class DragTrackerHandler { 4722 private final DragTracker mProxy; 4723 private final float mStartY, mStartX; 4724 private final float mMinDY, mMinDX; 4725 private final float mMaxDY, mMaxDX; 4726 private float mCurrStretchY, mCurrStretchX; 4727 private int mSX, mSY; 4728 private Interpolator mInterp; 4729 private float[] mXY = new float[2]; 4730 4731 // inner (non-state) classes can't have enums :( 4732 private static final int DRAGGING_STATE = 0; 4733 private static final int ANIMATING_STATE = 1; 4734 private static final int FINISHED_STATE = 2; 4735 private int mState; 4736 4737 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4738 mProxy = proxy; 4739 4740 int docBottom = computeRealVerticalScrollRange() + getTitleHeight(); 4741 int viewTop = getScrollY(); 4742 int viewBottom = viewTop + getHeight(); 4743 4744 mStartY = y; 4745 mMinDY = -viewTop; 4746 mMaxDY = docBottom - viewBottom; 4747 4748 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4749 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4750 " up/down= " + mMinDY + " " + mMaxDY); 4751 } 4752 4753 int docRight = computeRealHorizontalScrollRange(); 4754 int viewLeft = getScrollX(); 4755 int viewRight = viewLeft + getWidth(); 4756 mStartX = x; 4757 mMinDX = -viewLeft; 4758 mMaxDX = docRight - viewRight; 4759 4760 mState = DRAGGING_STATE; 4761 mProxy.onStartDrag(x, y); 4762 4763 // ensure we buildBitmap at least once 4764 mSX = -99999; 4765 } 4766 4767 private float computeStretch(float delta, float min, float max) { 4768 float stretch = 0; 4769 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4770 if (delta < min) { 4771 stretch = delta - min; 4772 } else if (delta > max) { 4773 stretch = delta - max; 4774 } 4775 } 4776 return stretch; 4777 } 4778 4779 public void dragTo(float x, float y) { 4780 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4781 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4782 4783 if ((mSnapScrollMode & SNAP_X) != 0) { 4784 sy = 0; 4785 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4786 sx = 0; 4787 } 4788 4789 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4790 mCurrStretchX = sx; 4791 mCurrStretchY = sy; 4792 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4793 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4794 " " + sy); 4795 } 4796 if (mProxy.onStretchChange(sx, sy)) { 4797 invalidate(); 4798 } 4799 } 4800 } 4801 4802 public void stopDrag() { 4803 final int DURATION = 200; 4804 int now = (int)SystemClock.uptimeMillis(); 4805 mInterp = new Interpolator(2); 4806 mXY[0] = mCurrStretchX; 4807 mXY[1] = mCurrStretchY; 4808 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4809 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4810 mInterp.setKeyFrame(0, now, mXY, blend); 4811 float[] zerozero = new float[] { 0, 0 }; 4812 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4813 mState = ANIMATING_STATE; 4814 4815 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4816 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4817 } 4818 } 4819 4820 // Call this after each draw. If it ruturns null, the tracker is done 4821 public boolean isFinished() { 4822 return mState == FINISHED_STATE; 4823 } 4824 4825 private int hiddenHeightOfTitleBar() { 4826 return getTitleHeight() - getVisibleTitleHeight(); 4827 } 4828 4829 // need a way to know if 565 or 8888 is the right config for 4830 // capturing the display and giving it to the drag proxy 4831 private Bitmap.Config offscreenBitmapConfig() { 4832 // hard code 565 for now 4833 return Bitmap.Config.RGB_565; 4834 } 4835 4836 /* If the tracker draws, then this returns true, otherwise it will 4837 return false, and draw nothing. 4838 */ 4839 public boolean draw(Canvas canvas) { 4840 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4841 int sx = getScrollX(); 4842 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4843 if (mSX != sx || mSY != sy) { 4844 buildBitmap(sx, sy); 4845 mSX = sx; 4846 mSY = sy; 4847 } 4848 4849 if (mState == ANIMATING_STATE) { 4850 Interpolator.Result result = mInterp.timeToValues(mXY); 4851 if (result == Interpolator.Result.FREEZE_END) { 4852 mState = FINISHED_STATE; 4853 return false; 4854 } else { 4855 mProxy.onStretchChange(mXY[0], mXY[1]); 4856 invalidate(); 4857 // fall through to the draw 4858 } 4859 } 4860 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4861 canvas.translate(sx, sy); 4862 mProxy.onDraw(canvas); 4863 canvas.restoreToCount(count); 4864 return true; 4865 } 4866 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4867 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4868 mCurrStretchX + " " + mCurrStretchY); 4869 } 4870 return false; 4871 } 4872 4873 private void buildBitmap(int sx, int sy) { 4874 int w = getWidth(); 4875 int h = getViewHeight(); 4876 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4877 Canvas canvas = new Canvas(bm); 4878 canvas.translate(-sx, -sy); 4879 drawContent(canvas); 4880 4881 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4882 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4883 " " + sy + " " + w + " " + h); 4884 } 4885 mProxy.onBitmapChange(bm); 4886 } 4887 } 4888 4889 /** @hide */ 4890 public static class DragTracker { 4891 public void onStartDrag(float x, float y) {} 4892 public boolean onStretchChange(float sx, float sy) { 4893 // return true to have us inval the view 4894 return false; 4895 } 4896 public void onStopDrag() {} 4897 public void onBitmapChange(Bitmap bm) {} 4898 public void onDraw(Canvas canvas) {} 4899 } 4900 4901 /** @hide */ 4902 public DragTracker getDragTracker() { 4903 return mDragTracker; 4904 } 4905 4906 /** @hide */ 4907 public void setDragTracker(DragTracker tracker) { 4908 mDragTracker = tracker; 4909 } 4910 4911 private DragTracker mDragTracker; 4912 private DragTrackerHandler mDragTrackerHandler; 4913 4914 private class ScaleDetectorListener implements 4915 ScaleGestureDetector.OnScaleGestureListener { 4916 4917 public boolean onScaleBegin(ScaleGestureDetector detector) { 4918 // cancel the single touch handling 4919 cancelTouch(); 4920 dismissZoomControl(); 4921 // reset the zoom overview mode so that the page won't auto grow 4922 mInZoomOverview = false; 4923 // If it is in password mode, turn it off so it does not draw 4924 // misplaced. 4925 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4926 mWebTextView.setInPassword(false); 4927 } 4928 4929 mViewManager.startZoom(); 4930 4931 return true; 4932 } 4933 4934 public void onScaleEnd(ScaleGestureDetector detector) { 4935 if (mPreviewZoomOnly) { 4936 mPreviewZoomOnly = false; 4937 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4938 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4939 // don't reflow when zoom in; when zoom out, do reflow if the 4940 // new scale is almost minimum scale; 4941 boolean reflowNow = (mActualScale - mMinZoomScale 4942 <= MINIMUM_SCALE_INCREMENT) 4943 || ((mActualScale <= 0.8 * mTextWrapScale)); 4944 // force zoom after mPreviewZoomOnly is set to false so that the 4945 // new view size will be passed to the WebKit 4946 setNewZoomScale(mActualScale, reflowNow, true); 4947 // call invalidate() to draw without zoom filter 4948 invalidate(); 4949 } 4950 // adjust the edit text view if needed 4951 if (inEditingMode() && didUpdateTextViewBounds(false) 4952 && nativeFocusCandidateIsPassword()) { 4953 // If it is a password field, start drawing the 4954 // WebTextView once again. 4955 mWebTextView.setInPassword(true); 4956 } 4957 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4958 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4959 // may trigger the unwanted fling. 4960 mTouchMode = TOUCH_PINCH_DRAG; 4961 mConfirmMove = true; 4962 startTouch(detector.getFocusX(), detector.getFocusY(), 4963 mLastTouchTime); 4964 4965 mViewManager.endZoom(); 4966 } 4967 4968 public boolean onScale(ScaleGestureDetector detector) { 4969 float scale = (float) (Math.round(detector.getScaleFactor() 4970 * mActualScale * 100) / 100.0); 4971 if (Math.abs(scale - mActualScale) >= MINIMUM_SCALE_INCREMENT) { 4972 mPreviewZoomOnly = true; 4973 // limit the scale change per step 4974 if (scale > mActualScale) { 4975 scale = Math.min(scale, mActualScale * 1.25f); 4976 } else { 4977 scale = Math.max(scale, mActualScale * 0.8f); 4978 } 4979 mZoomCenterX = detector.getFocusX(); 4980 mZoomCenterY = detector.getFocusY(); 4981 setNewZoomScale(scale, false, false); 4982 invalidate(); 4983 return true; 4984 } 4985 return false; 4986 } 4987 } 4988 4989 private boolean hitFocusedPlugin(int contentX, int contentY) { 4990 if (DebugFlags.WEB_VIEW) { 4991 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4992 Rect r = nativeFocusNodeBounds(); 4993 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4994 + ", " + r.right + ", " + r.bottom + ")"); 4995 } 4996 return nativeFocusIsPlugin() 4997 && nativeFocusNodeBounds().contains(contentX, contentY); 4998 } 4999 5000 private boolean shouldForwardTouchEvent() { 5001 return mFullScreenHolder != null || (mForwardTouchEvents 5002 && !mSelectingText 5003 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5004 } 5005 5006 private boolean inFullScreenMode() { 5007 return mFullScreenHolder != null; 5008 } 5009 5010 @Override 5011 public boolean onTouchEvent(MotionEvent ev) { 5012 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 5013 return false; 5014 } 5015 5016 if (DebugFlags.WEB_VIEW) { 5017 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 5018 + mTouchMode); 5019 } 5020 5021 int action; 5022 float x, y; 5023 long eventTime = ev.getEventTime(); 5024 5025 // FIXME: we may consider to give WebKit an option to handle multi-touch 5026 // events later. 5027 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 5028 if (mAllowPanAndScale || mMinZoomScale < mMaxZoomScale) { 5029 mScaleDetector.onTouchEvent(ev); 5030 if (mScaleDetector.isInProgress()) { 5031 mLastTouchTime = eventTime; 5032 if (!mAllowPanAndScale) { 5033 return true; 5034 } 5035 } 5036 x = mScaleDetector.getFocusX(); 5037 y = mScaleDetector.getFocusY(); 5038 action = ev.getAction() & MotionEvent.ACTION_MASK; 5039 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5040 cancelTouch(); 5041 action = MotionEvent.ACTION_DOWN; 5042 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5043 // set mLastTouchX/Y to the remaining point 5044 mLastTouchX = x; 5045 mLastTouchY = y; 5046 } else if (action == MotionEvent.ACTION_MOVE) { 5047 // negative x or y indicate it is on the edge, skip it. 5048 if (x < 0 || y < 0) { 5049 return true; 5050 } 5051 } 5052 } else { 5053 // if the page disallow zoom, skip multi-pointer action 5054 return true; 5055 } 5056 } else { 5057 action = ev.getAction(); 5058 x = ev.getX(); 5059 y = ev.getY(); 5060 } 5061 5062 // Due to the touch screen edge effect, a touch closer to the edge 5063 // always snapped to the edge. As getViewWidth() can be different from 5064 // getWidth() due to the scrollbar, adjusting the point to match 5065 // getViewWidth(). Same applied to the height. 5066 if (x > getViewWidth() - 1) { 5067 x = getViewWidth() - 1; 5068 } 5069 if (y > getViewHeightWithTitle() - 1) { 5070 y = getViewHeightWithTitle() - 1; 5071 } 5072 5073 float fDeltaX = mLastTouchX - x; 5074 float fDeltaY = mLastTouchY - y; 5075 int deltaX = (int) fDeltaX; 5076 int deltaY = (int) fDeltaY; 5077 int contentX = viewToContentX((int) x + mScrollX); 5078 int contentY = viewToContentY((int) y + mScrollY); 5079 5080 switch (action) { 5081 case MotionEvent.ACTION_DOWN: { 5082 mPreventDefault = PREVENT_DEFAULT_NO; 5083 mConfirmMove = false; 5084 if (!mScroller.isFinished()) { 5085 // stop the current scroll animation, but if this is 5086 // the start of a fling, allow it to add to the current 5087 // fling's velocity 5088 mScroller.abortAnimation(); 5089 mTouchMode = TOUCH_DRAG_START_MODE; 5090 mConfirmMove = true; 5091 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5092 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5093 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5094 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5095 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5096 } else { 5097 // commit the short press action for the previous tap 5098 doShortPress(); 5099 mTouchMode = TOUCH_INIT_MODE; 5100 mDeferTouchProcess = (!inFullScreenMode() 5101 && mForwardTouchEvents) ? hitFocusedPlugin( 5102 contentX, contentY) : false; 5103 } 5104 } else { // the normal case 5105 mPreviewZoomOnly = false; 5106 mTouchMode = TOUCH_INIT_MODE; 5107 mDeferTouchProcess = (!inFullScreenMode() 5108 && mForwardTouchEvents) ? hitFocusedPlugin( 5109 contentX, contentY) : false; 5110 mWebViewCore.sendMessage( 5111 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5112 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5113 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5114 (eventTime - mLastTouchUpTime), eventTime); 5115 } 5116 if (mSelectingText) { 5117 mDrawSelectionPointer = false; 5118 mSelectionStarted = nativeStartSelection(contentX, contentY); 5119 if (DebugFlags.WEB_VIEW) { 5120 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5121 } 5122 invalidate(); 5123 } 5124 } 5125 // Trigger the link 5126 if (mTouchMode == TOUCH_INIT_MODE 5127 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5128 mPrivateHandler.sendEmptyMessageDelayed( 5129 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5130 mPrivateHandler.sendEmptyMessageDelayed( 5131 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5132 if (inFullScreenMode() || mDeferTouchProcess) { 5133 mPreventDefault = PREVENT_DEFAULT_YES; 5134 } else if (mForwardTouchEvents) { 5135 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5136 } else { 5137 mPreventDefault = PREVENT_DEFAULT_NO; 5138 } 5139 // pass the touch events from UI thread to WebCore thread 5140 if (shouldForwardTouchEvent()) { 5141 TouchEventData ted = new TouchEventData(); 5142 ted.mAction = action; 5143 ted.mX = contentX; 5144 ted.mY = contentY; 5145 ted.mMetaState = ev.getMetaState(); 5146 ted.mReprocess = mDeferTouchProcess; 5147 if (mDeferTouchProcess) { 5148 // still needs to set them for compute deltaX/Y 5149 mLastTouchX = x; 5150 mLastTouchY = y; 5151 ted.mViewX = x; 5152 ted.mViewY = y; 5153 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5154 break; 5155 } 5156 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5157 if (!inFullScreenMode()) { 5158 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5159 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5160 action, 0), TAP_TIMEOUT); 5161 } 5162 } 5163 } 5164 startTouch(x, y, eventTime); 5165 break; 5166 } 5167 case MotionEvent.ACTION_MOVE: { 5168 boolean firstMove = false; 5169 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5170 >= mTouchSlopSquare) { 5171 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5172 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5173 mConfirmMove = true; 5174 firstMove = true; 5175 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5176 mTouchMode = TOUCH_INIT_MODE; 5177 } 5178 } 5179 // pass the touch events from UI thread to WebCore thread 5180 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5181 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5182 mLastSentTouchTime = eventTime; 5183 TouchEventData ted = new TouchEventData(); 5184 ted.mAction = action; 5185 ted.mX = contentX; 5186 ted.mY = contentY; 5187 ted.mMetaState = ev.getMetaState(); 5188 ted.mReprocess = mDeferTouchProcess; 5189 if (mDeferTouchProcess) { 5190 ted.mViewX = x; 5191 ted.mViewY = y; 5192 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5193 break; 5194 } 5195 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5196 if (firstMove && !inFullScreenMode()) { 5197 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5198 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5199 action, 0), TAP_TIMEOUT); 5200 } 5201 } 5202 if (mTouchMode == TOUCH_DONE_MODE 5203 || mPreventDefault == PREVENT_DEFAULT_YES) { 5204 // no dragging during scroll zoom animation, or when prevent 5205 // default is yes 5206 break; 5207 } 5208 if (mVelocityTracker == null) { 5209 Log.e(LOGTAG, "Got null mVelocityTracker when " 5210 + "mPreventDefault = " + mPreventDefault 5211 + " mDeferTouchProcess = " + mDeferTouchProcess 5212 + " mTouchMode = " + mTouchMode); 5213 } 5214 mVelocityTracker.addMovement(ev); 5215 if (mSelectingText && mSelectionStarted) { 5216 if (DebugFlags.WEB_VIEW) { 5217 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5218 } 5219 nativeExtendSelection(contentX, contentY); 5220 invalidate(); 5221 break; 5222 } 5223 5224 if (mTouchMode != TOUCH_DRAG_MODE) { 5225 5226 if (!mConfirmMove) { 5227 break; 5228 } 5229 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5230 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5231 // track mLastTouchTime as we may need to do fling at 5232 // ACTION_UP 5233 mLastTouchTime = eventTime; 5234 break; 5235 } 5236 5237 // Only lock dragging to one axis if we don't have a scale in progress. 5238 // Scaling implies free-roaming movement. Note we'll only ever get here 5239 // if mAllowPanAndScale is true. 5240 if (mScaleDetector != null && !mScaleDetector.isInProgress()) { 5241 // if it starts nearly horizontal or vertical, enforce it 5242 int ax = Math.abs(deltaX); 5243 int ay = Math.abs(deltaY); 5244 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5245 mSnapScrollMode = SNAP_X; 5246 mSnapPositive = deltaX > 0; 5247 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5248 mSnapScrollMode = SNAP_Y; 5249 mSnapPositive = deltaY > 0; 5250 } 5251 } 5252 5253 mTouchMode = TOUCH_DRAG_MODE; 5254 mLastTouchX = x; 5255 mLastTouchY = y; 5256 fDeltaX = 0.0f; 5257 fDeltaY = 0.0f; 5258 deltaX = 0; 5259 deltaY = 0; 5260 5261 startDrag(); 5262 } 5263 5264 if (mDragTrackerHandler != null) { 5265 mDragTrackerHandler.dragTo(x, y); 5266 } 5267 5268 // do pan 5269 boolean done = false; 5270 boolean keepScrollBarsVisible = false; 5271 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5272 mLastTouchX = x; 5273 mLastTouchY = y; 5274 keepScrollBarsVisible = done = true; 5275 } else { 5276 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5277 int ax = Math.abs(deltaX); 5278 int ay = Math.abs(deltaY); 5279 if (mSnapScrollMode == SNAP_X) { 5280 // radical change means getting out of snap mode 5281 if (ay > MAX_SLOPE_FOR_DIAG * ax 5282 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5283 mSnapScrollMode = SNAP_NONE; 5284 } 5285 // reverse direction means lock in the snap mode 5286 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5287 (mSnapPositive 5288 ? deltaX < -mMinLockSnapReverseDistance 5289 : deltaX > mMinLockSnapReverseDistance)) { 5290 mSnapScrollMode |= SNAP_LOCK; 5291 } 5292 } else { 5293 // radical change means getting out of snap mode 5294 if (ax > MAX_SLOPE_FOR_DIAG * ay 5295 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5296 mSnapScrollMode = SNAP_NONE; 5297 } 5298 // reverse direction means lock in the snap mode 5299 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5300 (mSnapPositive 5301 ? deltaY < -mMinLockSnapReverseDistance 5302 : deltaY > mMinLockSnapReverseDistance)) { 5303 mSnapScrollMode |= SNAP_LOCK; 5304 } 5305 } 5306 } 5307 if (mSnapScrollMode != SNAP_NONE) { 5308 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5309 deltaY = 0; 5310 } else { 5311 deltaX = 0; 5312 } 5313 } 5314 if ((deltaX | deltaY) != 0) { 5315 if (deltaX != 0) { 5316 mLastTouchX = x; 5317 } 5318 if (deltaY != 0) { 5319 mLastTouchY = y; 5320 } 5321 mHeldMotionless = MOTIONLESS_FALSE; 5322 } else { 5323 // keep the scrollbar on the screen even there is no 5324 // scroll 5325 mLastTouchX = x; 5326 mLastTouchY = y; 5327 keepScrollBarsVisible = true; 5328 } 5329 mLastTouchTime = eventTime; 5330 mUserScroll = true; 5331 } 5332 5333 doDrag(deltaX, deltaY); 5334 5335 if (keepScrollBarsVisible) { 5336 if (mHeldMotionless != MOTIONLESS_TRUE) { 5337 mHeldMotionless = MOTIONLESS_TRUE; 5338 invalidate(); 5339 } 5340 // keep the scrollbar on the screen even there is no scroll 5341 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5342 false); 5343 // return false to indicate that we can't pan out of the 5344 // view space 5345 return !done; 5346 } 5347 break; 5348 } 5349 case MotionEvent.ACTION_UP: { 5350 // pass the touch events from UI thread to WebCore thread 5351 if (shouldForwardTouchEvent()) { 5352 TouchEventData ted = new TouchEventData(); 5353 ted.mAction = action; 5354 ted.mX = contentX; 5355 ted.mY = contentY; 5356 ted.mMetaState = ev.getMetaState(); 5357 ted.mReprocess = mDeferTouchProcess; 5358 if (mDeferTouchProcess) { 5359 ted.mViewX = x; 5360 ted.mViewY = y; 5361 } 5362 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5363 } 5364 mLastTouchUpTime = eventTime; 5365 switch (mTouchMode) { 5366 case TOUCH_DOUBLE_TAP_MODE: // double tap 5367 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5368 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5369 if (inFullScreenMode() || mDeferTouchProcess) { 5370 TouchEventData ted = new TouchEventData(); 5371 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5372 ted.mX = contentX; 5373 ted.mY = contentY; 5374 ted.mMetaState = ev.getMetaState(); 5375 ted.mReprocess = mDeferTouchProcess; 5376 if (mDeferTouchProcess) { 5377 ted.mViewX = x; 5378 ted.mViewY = y; 5379 } 5380 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5381 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5382 doDoubleTap(); 5383 mTouchMode = TOUCH_DONE_MODE; 5384 } 5385 break; 5386 case TOUCH_INIT_MODE: // tap 5387 case TOUCH_SHORTPRESS_START_MODE: 5388 case TOUCH_SHORTPRESS_MODE: 5389 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5390 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5391 if (mConfirmMove) { 5392 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5393 " WebCore's response for touch down."); 5394 if (mPreventDefault != PREVENT_DEFAULT_YES 5395 && (computeMaxScrollX() > 0 5396 || computeMaxScrollY() > 0)) { 5397 // UI takes control back, cancel WebCore touch 5398 cancelWebCoreTouchEvent(contentX, contentY, 5399 true); 5400 // we will not rewrite drag code here, but we 5401 // will try fling if it applies. 5402 WebViewCore.reducePriority(); 5403 // to get better performance, pause updating the 5404 // picture 5405 WebViewCore.pauseUpdatePicture(mWebViewCore); 5406 // fall through to TOUCH_DRAG_MODE 5407 } else { 5408 // WebKit may consume the touch event and modify 5409 // DOM. drawContentPicture() will be called with 5410 // animateSroll as true for better performance. 5411 // Force redraw in high-quality. 5412 invalidate(); 5413 break; 5414 } 5415 } else { 5416 if (mSelectingText) { 5417 if (nativeHitSelection(contentX, contentY)) { 5418 copySelection(); 5419 } 5420 selectionDone(); 5421 break; 5422 } 5423 if (mTouchMode == TOUCH_INIT_MODE) { 5424 mPrivateHandler.sendEmptyMessageDelayed( 5425 RELEASE_SINGLE_TAP, ViewConfiguration 5426 .getDoubleTapTimeout()); 5427 } else { 5428 doShortPress(); 5429 } 5430 break; 5431 } 5432 case TOUCH_DRAG_MODE: 5433 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5434 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5435 // if the user waits a while w/o moving before the 5436 // up, we don't want to do a fling 5437 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5438 if (mVelocityTracker == null) { 5439 Log.e(LOGTAG, "Got null mVelocityTracker when " 5440 + "mPreventDefault = " 5441 + mPreventDefault 5442 + " mDeferTouchProcess = " 5443 + mDeferTouchProcess); 5444 } 5445 mVelocityTracker.addMovement(ev); 5446 // set to MOTIONLESS_IGNORE so that it won't keep 5447 // removing and sending message in 5448 // drawCoreAndCursorRing() 5449 mHeldMotionless = MOTIONLESS_IGNORE; 5450 doFling(); 5451 break; 5452 } else { 5453 if (mScroller.springback(mScrollX, mScrollY, 0, 5454 computeMaxScrollX(), 0, 5455 computeMaxScrollY())) { 5456 invalidate(); 5457 } 5458 } 5459 // redraw in high-quality, as we're done dragging 5460 mHeldMotionless = MOTIONLESS_TRUE; 5461 invalidate(); 5462 // fall through 5463 case TOUCH_DRAG_START_MODE: 5464 // TOUCH_DRAG_START_MODE should not happen for the real 5465 // device as we almost certain will get a MOVE. But this 5466 // is possible on emulator. 5467 mLastVelocity = 0; 5468 WebViewCore.resumePriority(); 5469 WebViewCore.resumeUpdatePicture(mWebViewCore); 5470 break; 5471 } 5472 stopTouch(); 5473 break; 5474 } 5475 case MotionEvent.ACTION_CANCEL: { 5476 if (mTouchMode == TOUCH_DRAG_MODE) { 5477 mScroller.springback(mScrollX, mScrollY, 0, 5478 computeMaxScrollX(), 0, computeMaxScrollY()); 5479 invalidate(); 5480 } 5481 cancelWebCoreTouchEvent(contentX, contentY, false); 5482 cancelTouch(); 5483 break; 5484 } 5485 } 5486 return true; 5487 } 5488 5489 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5490 if (shouldForwardTouchEvent()) { 5491 if (removeEvents) { 5492 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5493 } 5494 TouchEventData ted = new TouchEventData(); 5495 ted.mX = x; 5496 ted.mY = y; 5497 ted.mAction = MotionEvent.ACTION_CANCEL; 5498 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5499 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5500 } 5501 } 5502 5503 private void startTouch(float x, float y, long eventTime) { 5504 // Remember where the motion event started 5505 mLastTouchX = x; 5506 mLastTouchY = y; 5507 mLastTouchTime = eventTime; 5508 mVelocityTracker = VelocityTracker.obtain(); 5509 mSnapScrollMode = SNAP_NONE; 5510 if (mDragTracker != null) { 5511 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5512 } 5513 } 5514 5515 private void startDrag() { 5516 WebViewCore.reducePriority(); 5517 // to get better performance, pause updating the picture 5518 WebViewCore.pauseUpdatePicture(mWebViewCore); 5519 if (!mDragFromTextInput) { 5520 nativeHideCursor(); 5521 } 5522 WebSettings settings = getSettings(); 5523 if (settings.supportZoom() 5524 && settings.getBuiltInZoomControls() 5525 && !getZoomButtonsController().isVisible() 5526 && mMinZoomScale < mMaxZoomScale 5527 && (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5528 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF)) { 5529 mZoomButtonsController.setVisible(true); 5530 int count = settings.getDoubleTapToastCount(); 5531 if (mInZoomOverview && count > 0) { 5532 settings.setDoubleTapToastCount(--count); 5533 Toast.makeText(mContext, 5534 com.android.internal.R.string.double_tap_toast, 5535 Toast.LENGTH_LONG).show(); 5536 } 5537 } 5538 } 5539 5540 private void doDrag(int deltaX, int deltaY) { 5541 if ((deltaX | deltaY) != 0) { 5542 final int oldX = mScrollX; 5543 final int oldY = mScrollY; 5544 final int rangeX = computeMaxScrollX(); 5545 final int rangeY = computeMaxScrollY(); 5546 overscrollBy(deltaX, deltaY, oldX, oldY, 5547 rangeX, rangeY, 5548 mOverscrollDistance, mOverscrollDistance, true); 5549 5550 if (mEdgeGlowTop != null) { 5551 // Don't show left/right glows if we fit the whole content. 5552 if (rangeX > 0) { 5553 final int pulledToX = oldX + deltaX; 5554 if (pulledToX < 0) { 5555 mEdgeGlowLeft.onPull((float) deltaX / getWidth()); 5556 } else if (pulledToX > rangeX) { 5557 mEdgeGlowRight.onPull((float) deltaX / getWidth()); 5558 } 5559 } 5560 5561 if (rangeY > 0 || getOverscrollMode() == OVERSCROLL_ALWAYS) { 5562 final int pulledToY = oldY + deltaY; 5563 if (pulledToY < 0) { 5564 mEdgeGlowTop.onPull((float) deltaY / getHeight()); 5565 } else if (pulledToY > rangeY) { 5566 mEdgeGlowBottom.onPull((float) deltaY / getHeight()); 5567 } 5568 } 5569 } 5570 } 5571 if (!getSettings().getBuiltInZoomControls()) { 5572 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 5573 if (mZoomControls != null && showPlusMinus) { 5574 if (mZoomControls.getVisibility() == View.VISIBLE) { 5575 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5576 } else { 5577 mZoomControls.show(showPlusMinus, false); 5578 } 5579 mPrivateHandler.postDelayed(mZoomControlRunnable, 5580 ZOOM_CONTROLS_TIMEOUT); 5581 } 5582 } 5583 } 5584 5585 private void stopTouch() { 5586 if (mDragTrackerHandler != null) { 5587 mDragTrackerHandler.stopDrag(); 5588 } 5589 // we also use mVelocityTracker == null to tell us that we are 5590 // not "moving around", so we can take the slower/prettier 5591 // mode in the drawing code 5592 if (mVelocityTracker != null) { 5593 mVelocityTracker.recycle(); 5594 mVelocityTracker = null; 5595 } 5596 5597 // Release any pulled glows 5598 if (mEdgeGlowTop != null) { 5599 mEdgeGlowTop.onRelease(); 5600 mEdgeGlowBottom.onRelease(); 5601 mEdgeGlowLeft.onRelease(); 5602 mEdgeGlowRight.onRelease(); 5603 } 5604 } 5605 5606 private void cancelTouch() { 5607 if (mDragTrackerHandler != null) { 5608 mDragTrackerHandler.stopDrag(); 5609 } 5610 // we also use mVelocityTracker == null to tell us that we are 5611 // not "moving around", so we can take the slower/prettier 5612 // mode in the drawing code 5613 if (mVelocityTracker != null) { 5614 mVelocityTracker.recycle(); 5615 mVelocityTracker = null; 5616 } 5617 5618 // Release any pulled glows 5619 if (mEdgeGlowTop != null) { 5620 mEdgeGlowTop.onRelease(); 5621 mEdgeGlowBottom.onRelease(); 5622 mEdgeGlowLeft.onRelease(); 5623 mEdgeGlowRight.onRelease(); 5624 } 5625 5626 if (mTouchMode == TOUCH_DRAG_MODE) { 5627 WebViewCore.resumePriority(); 5628 WebViewCore.resumeUpdatePicture(mWebViewCore); 5629 } 5630 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5631 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5632 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5633 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5634 mHeldMotionless = MOTIONLESS_TRUE; 5635 mTouchMode = TOUCH_DONE_MODE; 5636 nativeHideCursor(); 5637 } 5638 5639 private long mTrackballFirstTime = 0; 5640 private long mTrackballLastTime = 0; 5641 private float mTrackballRemainsX = 0.0f; 5642 private float mTrackballRemainsY = 0.0f; 5643 private int mTrackballXMove = 0; 5644 private int mTrackballYMove = 0; 5645 private boolean mSelectingText = false; 5646 private boolean mSelectionStarted = false; 5647 private boolean mExtendSelection = false; 5648 private boolean mDrawSelectionPointer = false; 5649 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5650 private static final int TRACKBALL_TIMEOUT = 200; 5651 private static final int TRACKBALL_WAIT = 100; 5652 private static final int TRACKBALL_SCALE = 400; 5653 private static final int TRACKBALL_SCROLL_COUNT = 5; 5654 private static final int TRACKBALL_MOVE_COUNT = 10; 5655 private static final int TRACKBALL_MULTIPLIER = 3; 5656 private static final int SELECT_CURSOR_OFFSET = 16; 5657 private int mSelectX = 0; 5658 private int mSelectY = 0; 5659 private boolean mFocusSizeChanged = false; 5660 private boolean mShiftIsPressed = false; 5661 private boolean mTrackballDown = false; 5662 private long mTrackballUpTime = 0; 5663 private long mLastCursorTime = 0; 5664 private Rect mLastCursorBounds; 5665 5666 // Set by default; BrowserActivity clears to interpret trackball data 5667 // directly for movement. Currently, the framework only passes 5668 // arrow key events, not trackball events, from one child to the next 5669 private boolean mMapTrackballToArrowKeys = true; 5670 5671 public void setMapTrackballToArrowKeys(boolean setMap) { 5672 mMapTrackballToArrowKeys = setMap; 5673 } 5674 5675 void resetTrackballTime() { 5676 mTrackballLastTime = 0; 5677 } 5678 5679 @Override 5680 public boolean onTrackballEvent(MotionEvent ev) { 5681 long time = ev.getEventTime(); 5682 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5683 if (ev.getY() > 0) pageDown(true); 5684 if (ev.getY() < 0) pageUp(true); 5685 return true; 5686 } 5687 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5688 if (mSelectingText) { 5689 return true; // discard press if copy in progress 5690 } 5691 mTrackballDown = true; 5692 if (mNativeClass == 0) { 5693 return false; 5694 } 5695 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5696 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5697 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5698 nativeSelectBestAt(mLastCursorBounds); 5699 } 5700 if (DebugFlags.WEB_VIEW) { 5701 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5702 + " time=" + time 5703 + " mLastCursorTime=" + mLastCursorTime); 5704 } 5705 if (isInTouchMode()) requestFocusFromTouch(); 5706 return false; // let common code in onKeyDown at it 5707 } 5708 if (ev.getAction() == MotionEvent.ACTION_UP) { 5709 // LONG_PRESS_CENTER is set in common onKeyDown 5710 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5711 mTrackballDown = false; 5712 mTrackballUpTime = time; 5713 if (mSelectingText) { 5714 if (mExtendSelection) { 5715 copySelection(); 5716 selectionDone(); 5717 } else { 5718 mExtendSelection = true; 5719 nativeSetExtendSelection(); 5720 invalidate(); // draw the i-beam instead of the arrow 5721 } 5722 return true; // discard press if copy in progress 5723 } 5724 if (DebugFlags.WEB_VIEW) { 5725 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5726 + " time=" + time 5727 ); 5728 } 5729 return false; // let common code in onKeyUp at it 5730 } 5731 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5732 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5733 return false; 5734 } 5735 if (mTrackballDown) { 5736 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5737 return true; // discard move if trackball is down 5738 } 5739 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5740 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5741 return true; 5742 } 5743 // TODO: alternatively we can do panning as touch does 5744 switchOutDrawHistory(); 5745 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5746 if (DebugFlags.WEB_VIEW) { 5747 Log.v(LOGTAG, "onTrackballEvent time=" 5748 + time + " last=" + mTrackballLastTime); 5749 } 5750 mTrackballFirstTime = time; 5751 mTrackballXMove = mTrackballYMove = 0; 5752 } 5753 mTrackballLastTime = time; 5754 if (DebugFlags.WEB_VIEW) { 5755 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5756 } 5757 mTrackballRemainsX += ev.getX(); 5758 mTrackballRemainsY += ev.getY(); 5759 doTrackball(time); 5760 return true; 5761 } 5762 5763 void moveSelection(float xRate, float yRate) { 5764 if (mNativeClass == 0) 5765 return; 5766 int width = getViewWidth(); 5767 int height = getViewHeight(); 5768 mSelectX += xRate; 5769 mSelectY += yRate; 5770 int maxX = width + mScrollX; 5771 int maxY = height + mScrollY; 5772 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5773 , mSelectX)); 5774 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5775 , mSelectY)); 5776 if (DebugFlags.WEB_VIEW) { 5777 Log.v(LOGTAG, "moveSelection" 5778 + " mSelectX=" + mSelectX 5779 + " mSelectY=" + mSelectY 5780 + " mScrollX=" + mScrollX 5781 + " mScrollY=" + mScrollY 5782 + " xRate=" + xRate 5783 + " yRate=" + yRate 5784 ); 5785 } 5786 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5787 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5788 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5789 : 0; 5790 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5791 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5792 : 0; 5793 pinScrollBy(scrollX, scrollY, true, 0); 5794 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5795 requestRectangleOnScreen(select); 5796 invalidate(); 5797 } 5798 5799 private int scaleTrackballX(float xRate, int width) { 5800 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5801 int nextXMove = xMove; 5802 if (xMove > 0) { 5803 if (xMove > mTrackballXMove) { 5804 xMove -= mTrackballXMove; 5805 } 5806 } else if (xMove < mTrackballXMove) { 5807 xMove -= mTrackballXMove; 5808 } 5809 mTrackballXMove = nextXMove; 5810 return xMove; 5811 } 5812 5813 private int scaleTrackballY(float yRate, int height) { 5814 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5815 int nextYMove = yMove; 5816 if (yMove > 0) { 5817 if (yMove > mTrackballYMove) { 5818 yMove -= mTrackballYMove; 5819 } 5820 } else if (yMove < mTrackballYMove) { 5821 yMove -= mTrackballYMove; 5822 } 5823 mTrackballYMove = nextYMove; 5824 return yMove; 5825 } 5826 5827 private int keyCodeToSoundsEffect(int keyCode) { 5828 switch(keyCode) { 5829 case KeyEvent.KEYCODE_DPAD_UP: 5830 return SoundEffectConstants.NAVIGATION_UP; 5831 case KeyEvent.KEYCODE_DPAD_RIGHT: 5832 return SoundEffectConstants.NAVIGATION_RIGHT; 5833 case KeyEvent.KEYCODE_DPAD_DOWN: 5834 return SoundEffectConstants.NAVIGATION_DOWN; 5835 case KeyEvent.KEYCODE_DPAD_LEFT: 5836 return SoundEffectConstants.NAVIGATION_LEFT; 5837 } 5838 throw new IllegalArgumentException("keyCode must be one of " + 5839 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5840 "KEYCODE_DPAD_LEFT}."); 5841 } 5842 5843 private void doTrackball(long time) { 5844 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5845 if (elapsed == 0) { 5846 elapsed = TRACKBALL_TIMEOUT; 5847 } 5848 float xRate = mTrackballRemainsX * 1000 / elapsed; 5849 float yRate = mTrackballRemainsY * 1000 / elapsed; 5850 int viewWidth = getViewWidth(); 5851 int viewHeight = getViewHeight(); 5852 if (mSelectingText) { 5853 if (!mDrawSelectionPointer) { 5854 // The last selection was made by touch, disabling drawing the 5855 // selection pointer. Allow the trackball to adjust the 5856 // position of the touch control. 5857 mSelectX = contentToViewX(nativeSelectionX()); 5858 mSelectY = contentToViewY(nativeSelectionY()); 5859 mDrawSelectionPointer = mExtendSelection = true; 5860 nativeSetExtendSelection(); 5861 } 5862 moveSelection(scaleTrackballX(xRate, viewWidth), 5863 scaleTrackballY(yRate, viewHeight)); 5864 mTrackballRemainsX = mTrackballRemainsY = 0; 5865 return; 5866 } 5867 float ax = Math.abs(xRate); 5868 float ay = Math.abs(yRate); 5869 float maxA = Math.max(ax, ay); 5870 if (DebugFlags.WEB_VIEW) { 5871 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5872 + " xRate=" + xRate 5873 + " yRate=" + yRate 5874 + " mTrackballRemainsX=" + mTrackballRemainsX 5875 + " mTrackballRemainsY=" + mTrackballRemainsY); 5876 } 5877 int width = mContentWidth - viewWidth; 5878 int height = mContentHeight - viewHeight; 5879 if (width < 0) width = 0; 5880 if (height < 0) height = 0; 5881 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5882 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5883 maxA = Math.max(ax, ay); 5884 int count = Math.max(0, (int) maxA); 5885 int oldScrollX = mScrollX; 5886 int oldScrollY = mScrollY; 5887 if (count > 0) { 5888 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5889 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5890 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5891 KeyEvent.KEYCODE_DPAD_RIGHT; 5892 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5893 if (DebugFlags.WEB_VIEW) { 5894 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5895 + " count=" + count 5896 + " mTrackballRemainsX=" + mTrackballRemainsX 5897 + " mTrackballRemainsY=" + mTrackballRemainsY); 5898 } 5899 if (mNativeClass != 0 && nativeFocusIsPlugin()) { 5900 for (int i = 0; i < count; i++) { 5901 letPluginHandleNavKey(selectKeyCode, time, true); 5902 } 5903 letPluginHandleNavKey(selectKeyCode, time, false); 5904 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5905 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5906 } 5907 mTrackballRemainsX = mTrackballRemainsY = 0; 5908 } 5909 if (count >= TRACKBALL_SCROLL_COUNT) { 5910 int xMove = scaleTrackballX(xRate, width); 5911 int yMove = scaleTrackballY(yRate, height); 5912 if (DebugFlags.WEB_VIEW) { 5913 Log.v(LOGTAG, "doTrackball pinScrollBy" 5914 + " count=" + count 5915 + " xMove=" + xMove + " yMove=" + yMove 5916 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5917 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5918 ); 5919 } 5920 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5921 xMove = 0; 5922 } 5923 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5924 yMove = 0; 5925 } 5926 if (xMove != 0 || yMove != 0) { 5927 pinScrollBy(xMove, yMove, true, 0); 5928 } 5929 mUserScroll = true; 5930 } 5931 } 5932 5933 private int computeMaxScrollX() { 5934 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 5935 } 5936 5937 private int computeMaxScrollY() { 5938 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 5939 - getViewHeightWithTitle(), 0); 5940 } 5941 5942 public void flingScroll(int vx, int vy) { 5943 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5944 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 5945 invalidate(); 5946 } 5947 5948 private void doFling() { 5949 if (mVelocityTracker == null) { 5950 return; 5951 } 5952 int maxX = computeMaxScrollX(); 5953 int maxY = computeMaxScrollY(); 5954 5955 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5956 int vx = (int) mVelocityTracker.getXVelocity(); 5957 int vy = (int) mVelocityTracker.getYVelocity(); 5958 5959 if (mSnapScrollMode != SNAP_NONE) { 5960 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5961 vy = 0; 5962 } else { 5963 vx = 0; 5964 } 5965 } 5966 if (true /* EMG release: make our fling more like Maps' */) { 5967 // maps cuts their velocity in half 5968 vx = vx * 3 / 4; 5969 vy = vy * 3 / 4; 5970 } 5971 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5972 WebViewCore.resumePriority(); 5973 WebViewCore.resumeUpdatePicture(mWebViewCore); 5974 if (mScroller.springback(mScrollX, mScrollY, 0, computeMaxScrollX(), 5975 0, computeMaxScrollY())) { 5976 invalidate(); 5977 } 5978 return; 5979 } 5980 float currentVelocity = mScroller.getCurrVelocity(); 5981 if (mLastVelocity > 0 && currentVelocity > 0) { 5982 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5983 - Math.atan2(vy, vx))); 5984 final float circle = (float) (Math.PI) * 2.0f; 5985 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5986 vx += currentVelocity * mLastVelX / mLastVelocity; 5987 vy += currentVelocity * mLastVelY / mLastVelocity; 5988 if (DebugFlags.WEB_VIEW) { 5989 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5990 } 5991 } else if (DebugFlags.WEB_VIEW) { 5992 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5993 } 5994 } else if (DebugFlags.WEB_VIEW) { 5995 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5996 + " current=" + currentVelocity 5997 + " vx=" + vx + " vy=" + vy 5998 + " maxX=" + maxX + " maxY=" + maxY 5999 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 6000 } 6001 6002 // Allow sloppy flings without overscrolling at the edges. 6003 if ((mScrollX == 0 || mScrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6004 vx = 0; 6005 } 6006 if ((mScrollY == 0 || mScrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6007 vy = 0; 6008 } 6009 6010 if (mOverscrollDistance < mOverflingDistance) { 6011 if (mScrollX == -mOverscrollDistance || mScrollX == maxX + mOverscrollDistance) { 6012 vx = 0; 6013 } 6014 if (mScrollY == -mOverscrollDistance || mScrollY == maxY + mOverscrollDistance) { 6015 vy = 0; 6016 } 6017 } 6018 6019 mLastVelX = vx; 6020 mLastVelY = vy; 6021 mLastVelocity = (float) Math.hypot(vx, vy); 6022 6023 // no horizontal overscroll if the content just fits 6024 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY, 6025 maxX == 0 ? 0 : mOverflingDistance, mOverflingDistance); 6026 // Duration is calculated based on velocity. With range boundaries and overscroll 6027 // we may not know how long the final animation will take. (Hence the deprecation 6028 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6029 // resumes during this effect we will take a performance hit. See computeScroll; 6030 // we resume webcore there when the animation is finished. 6031 final int time = mScroller.getDuration(); 6032 awakenScrollBars(time); 6033 invalidate(); 6034 } 6035 6036 private boolean zoomWithPreview(float scale, boolean updateTextWrapScale) { 6037 float oldScale = mActualScale; 6038 mInitialScrollX = mScrollX; 6039 mInitialScrollY = mScrollY; 6040 6041 // snap to DEFAULT_SCALE if it is close 6042 if (Math.abs(scale - mDefaultScale) < MINIMUM_SCALE_INCREMENT) { 6043 scale = mDefaultScale; 6044 } 6045 6046 setNewZoomScale(scale, updateTextWrapScale, false); 6047 6048 if (oldScale != mActualScale) { 6049 // use mZoomPickerScale to see zoom preview first 6050 mZoomStart = SystemClock.uptimeMillis(); 6051 mInvInitialZoomScale = 1.0f / oldScale; 6052 mInvFinalZoomScale = 1.0f / mActualScale; 6053 mZoomScale = mActualScale; 6054 WebViewCore.pauseUpdatePicture(mWebViewCore); 6055 invalidate(); 6056 return true; 6057 } else { 6058 return false; 6059 } 6060 } 6061 6062 /** 6063 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6064 * in charge of installing this view to the view hierarchy. This view will 6065 * become visible when the user starts scrolling via touch and fade away if 6066 * the user does not interact with it. 6067 * <p/> 6068 * API version 3 introduces a built-in zoom mechanism that is shown 6069 * automatically by the MapView. This is the preferred approach for 6070 * showing the zoom UI. 6071 * 6072 * @deprecated The built-in zoom mechanism is preferred, see 6073 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6074 */ 6075 @Deprecated 6076 public View getZoomControls() { 6077 if (!getSettings().supportZoom()) { 6078 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6079 return null; 6080 } 6081 if (mZoomControls == null) { 6082 mZoomControls = createZoomControls(); 6083 6084 /* 6085 * need to be set to VISIBLE first so that getMeasuredHeight() in 6086 * {@link #onSizeChanged()} can return the measured value for proper 6087 * layout. 6088 */ 6089 mZoomControls.setVisibility(View.VISIBLE); 6090 mZoomControlRunnable = new Runnable() { 6091 public void run() { 6092 6093 /* Don't dismiss the controls if the user has 6094 * focus on them. Wait and check again later. 6095 */ 6096 if (!mZoomControls.hasFocus()) { 6097 mZoomControls.hide(); 6098 } else { 6099 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6100 mPrivateHandler.postDelayed(mZoomControlRunnable, 6101 ZOOM_CONTROLS_TIMEOUT); 6102 } 6103 } 6104 }; 6105 } 6106 return mZoomControls; 6107 } 6108 6109 private ExtendedZoomControls createZoomControls() { 6110 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 6111 , null); 6112 zoomControls.setOnZoomInClickListener(new OnClickListener() { 6113 public void onClick(View v) { 6114 // reset time out 6115 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6116 mPrivateHandler.postDelayed(mZoomControlRunnable, 6117 ZOOM_CONTROLS_TIMEOUT); 6118 zoomIn(); 6119 } 6120 }); 6121 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 6122 public void onClick(View v) { 6123 // reset time out 6124 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6125 mPrivateHandler.postDelayed(mZoomControlRunnable, 6126 ZOOM_CONTROLS_TIMEOUT); 6127 zoomOut(); 6128 } 6129 }); 6130 return zoomControls; 6131 } 6132 6133 /** 6134 * Gets the {@link ZoomButtonsController} which can be used to add 6135 * additional buttons to the zoom controls window. 6136 * 6137 * @return The instance of {@link ZoomButtonsController} used by this class, 6138 * or null if it is unavailable. 6139 * @hide 6140 */ 6141 public ZoomButtonsController getZoomButtonsController() { 6142 if (mZoomButtonsController == null) { 6143 mZoomButtonsController = new ZoomButtonsController(this); 6144 mZoomButtonsController.setOnZoomListener(mZoomListener); 6145 // ZoomButtonsController positions the buttons at the bottom, but in 6146 // the middle. Change their layout parameters so they appear on the 6147 // right. 6148 View controls = mZoomButtonsController.getZoomControls(); 6149 ViewGroup.LayoutParams params = controls.getLayoutParams(); 6150 if (params instanceof FrameLayout.LayoutParams) { 6151 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) params; 6152 frameParams.gravity = Gravity.RIGHT; 6153 } 6154 } 6155 return mZoomButtonsController; 6156 } 6157 6158 /** 6159 * Perform zoom in in the webview 6160 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6161 */ 6162 public boolean zoomIn() { 6163 // TODO: alternatively we can disallow this during draw history mode 6164 switchOutDrawHistory(); 6165 mInZoomOverview = false; 6166 // Center zooming to the center of the screen. 6167 mZoomCenterX = getViewWidth() * .5f; 6168 mZoomCenterY = getViewHeight() * .5f; 6169 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 6170 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 6171 return zoomWithPreview(mActualScale * 1.25f, true); 6172 } 6173 6174 /** 6175 * Perform zoom out in the webview 6176 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6177 */ 6178 public boolean zoomOut() { 6179 // TODO: alternatively we can disallow this during draw history mode 6180 switchOutDrawHistory(); 6181 // Center zooming to the center of the screen. 6182 mZoomCenterX = getViewWidth() * .5f; 6183 mZoomCenterY = getViewHeight() * .5f; 6184 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 6185 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 6186 return zoomWithPreview(mActualScale * 0.8f, true); 6187 } 6188 6189 private void updateSelection() { 6190 if (mNativeClass == 0) { 6191 return; 6192 } 6193 // mLastTouchX and mLastTouchY are the point in the current viewport 6194 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6195 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6196 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6197 contentX + mNavSlop, contentY + mNavSlop); 6198 nativeSelectBestAt(rect); 6199 } 6200 6201 /** 6202 * Scroll the focused text field/area to match the WebTextView 6203 * @param xPercent New x position of the WebTextView from 0 to 1. 6204 * @param y New y position of the WebTextView in view coordinates 6205 */ 6206 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 6207 if (!inEditingMode() || mWebViewCore == null) { 6208 return; 6209 } 6210 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 6211 // Since this position is relative to the top of the text input 6212 // field, we do not need to take the title bar's height into 6213 // consideration. 6214 viewToContentDimension(y), 6215 new Float(xPercent)); 6216 } 6217 6218 /** 6219 * Set our starting point and time for a drag from the WebTextView. 6220 */ 6221 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6222 if (!inEditingMode()) { 6223 return; 6224 } 6225 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 6226 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 6227 mLastTouchTime = eventTime; 6228 if (!mScroller.isFinished()) { 6229 abortAnimation(); 6230 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6231 } 6232 mSnapScrollMode = SNAP_NONE; 6233 mVelocityTracker = VelocityTracker.obtain(); 6234 mTouchMode = TOUCH_DRAG_START_MODE; 6235 } 6236 6237 /** 6238 * Given a motion event from the WebTextView, set its location to our 6239 * coordinates, and handle the event. 6240 */ 6241 /*package*/ boolean textFieldDrag(MotionEvent event) { 6242 if (!inEditingMode()) { 6243 return false; 6244 } 6245 mDragFromTextInput = true; 6246 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6247 (float) (mWebTextView.getTop() - mScrollY)); 6248 boolean result = onTouchEvent(event); 6249 mDragFromTextInput = false; 6250 return result; 6251 } 6252 6253 /** 6254 * Due a touch up from a WebTextView. This will be handled by webkit to 6255 * change the selection. 6256 * @param event MotionEvent in the WebTextView's coordinates. 6257 */ 6258 /*package*/ void touchUpOnTextField(MotionEvent event) { 6259 if (!inEditingMode()) { 6260 return; 6261 } 6262 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6263 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6264 nativeMotionUp(x, y, mNavSlop); 6265 } 6266 6267 /** 6268 * Called when pressing the center key or trackball on a textfield. 6269 */ 6270 /*package*/ void centerKeyPressOnTextField() { 6271 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6272 nativeCursorNodePointer()); 6273 } 6274 6275 private void doShortPress() { 6276 if (mNativeClass == 0) { 6277 return; 6278 } 6279 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6280 return; 6281 } 6282 mTouchMode = TOUCH_DONE_MODE; 6283 switchOutDrawHistory(); 6284 // mLastTouchX and mLastTouchY are the point in the current viewport 6285 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6286 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6287 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6288 WebViewCore.MotionUpData motionUpData = new WebViewCore 6289 .MotionUpData(); 6290 motionUpData.mFrame = nativeCacheHitFramePointer(); 6291 motionUpData.mNode = nativeCacheHitNodePointer(); 6292 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6293 motionUpData.mX = contentX; 6294 motionUpData.mY = contentY; 6295 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6296 motionUpData); 6297 } else { 6298 doMotionUp(contentX, contentY); 6299 } 6300 } 6301 6302 private void doMotionUp(int contentX, int contentY) { 6303 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 6304 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6305 } 6306 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6307 playSoundEffect(SoundEffectConstants.CLICK); 6308 } 6309 } 6310 6311 /* 6312 * Return true if the view (Plugin) is fully visible and maximized inside 6313 * the WebView. 6314 */ 6315 private boolean isPluginFitOnScreen(ViewManager.ChildView view) { 6316 int viewWidth = getViewWidth(); 6317 int viewHeight = getViewHeightWithTitle(); 6318 float scale = Math.min((float) viewWidth / view.width, 6319 (float) viewHeight / view.height); 6320 if (scale < mMinZoomScale) { 6321 scale = mMinZoomScale; 6322 } else if (scale > mMaxZoomScale) { 6323 scale = mMaxZoomScale; 6324 } 6325 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 6326 if (contentToViewX(view.x) >= mScrollX 6327 && contentToViewX(view.x + view.width) <= mScrollX 6328 + viewWidth 6329 && contentToViewY(view.y) >= mScrollY 6330 && contentToViewY(view.y + view.height) <= mScrollY 6331 + viewHeight) { 6332 return true; 6333 } 6334 } 6335 return false; 6336 } 6337 6338 /* 6339 * Maximize and center the rectangle, specified in the document coordinate 6340 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6341 * animated scroll to center it. If the zoom needs to be changed, find the 6342 * zoom center and do a smooth zoom transition. 6343 */ 6344 private void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 6345 int viewWidth = getViewWidth(); 6346 int viewHeight = getViewHeightWithTitle(); 6347 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 6348 / docHeight); 6349 if (scale < mMinZoomScale) { 6350 scale = mMinZoomScale; 6351 } else if (scale > mMaxZoomScale) { 6352 scale = mMaxZoomScale; 6353 } 6354 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 6355 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 6356 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 6357 true, 0); 6358 } else { 6359 float oldScreenX = docX * mActualScale - mScrollX; 6360 float rectViewX = docX * scale; 6361 float rectViewWidth = docWidth * scale; 6362 float newMaxWidth = mContentWidth * scale; 6363 float newScreenX = (viewWidth - rectViewWidth) / 2; 6364 // pin the newX to the WebView 6365 if (newScreenX > rectViewX) { 6366 newScreenX = rectViewX; 6367 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6368 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6369 } 6370 mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale) 6371 / (scale - mActualScale); 6372 float oldScreenY = docY * mActualScale + getTitleHeight() 6373 - mScrollY; 6374 float rectViewY = docY * scale + getTitleHeight(); 6375 float rectViewHeight = docHeight * scale; 6376 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6377 float newScreenY = (viewHeight - rectViewHeight) / 2; 6378 // pin the newY to the WebView 6379 if (newScreenY > rectViewY) { 6380 newScreenY = rectViewY; 6381 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6382 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6383 } 6384 mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale) 6385 / (scale - mActualScale); 6386 zoomWithPreview(scale, false); 6387 } 6388 } 6389 6390 void dismissZoomControl() { 6391 if (mWebViewCore == null) { 6392 // maybe called after WebView's destroy(). As we can't get settings, 6393 // just hide zoom control for both styles. 6394 if (mZoomButtonsController != null) { 6395 mZoomButtonsController.setVisible(false); 6396 } 6397 if (mZoomControls != null) { 6398 mZoomControls.hide(); 6399 } 6400 return; 6401 } 6402 WebSettings settings = getSettings(); 6403 if (settings.getBuiltInZoomControls()) { 6404 if (mZoomButtonsController != null) { 6405 mZoomButtonsController.setVisible(false); 6406 } 6407 } else { 6408 if (mZoomControlRunnable != null) { 6409 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6410 } 6411 if (mZoomControls != null) { 6412 mZoomControls.hide(); 6413 } 6414 } 6415 } 6416 6417 // Rule for double tap: 6418 // 1. if the current scale is not same as the text wrap scale and layout 6419 // algorithm is NARROW_COLUMNS, fit to column; 6420 // 2. if the current state is not overview mode, change to overview mode; 6421 // 3. if the current state is overview mode, change to default scale. 6422 private void doDoubleTap() { 6423 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 6424 return; 6425 } 6426 mZoomCenterX = mLastTouchX; 6427 mZoomCenterY = mLastTouchY; 6428 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 6429 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 6430 WebSettings settings = getSettings(); 6431 settings.setDoubleTapToastCount(0); 6432 // remove the zoom control after double tap 6433 dismissZoomControl(); 6434 ViewManager.ChildView plugin = mViewManager.hitTest(mAnchorX, mAnchorY); 6435 if (plugin != null) { 6436 if (isPluginFitOnScreen(plugin)) { 6437 mInZoomOverview = true; 6438 // Force the titlebar fully reveal in overview mode 6439 if (mScrollY < getTitleHeight()) mScrollY = 0; 6440 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth, 6441 true); 6442 } else { 6443 mInZoomOverview = false; 6444 centerFitRect(plugin.x, plugin.y, plugin.width, plugin.height); 6445 } 6446 return; 6447 } 6448 boolean zoomToDefault = false; 6449 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 6450 && (Math.abs(mActualScale - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT)) { 6451 setNewZoomScale(mActualScale, true, true); 6452 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 6453 if (Math.abs(mActualScale - overviewScale) < MINIMUM_SCALE_INCREMENT) { 6454 mInZoomOverview = true; 6455 } 6456 } else if (!mInZoomOverview) { 6457 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 6458 if (Math.abs(mActualScale - newScale) >= MINIMUM_SCALE_INCREMENT) { 6459 mInZoomOverview = true; 6460 // Force the titlebar fully reveal in overview mode 6461 if (mScrollY < getTitleHeight()) mScrollY = 0; 6462 zoomWithPreview(newScale, true); 6463 } else if (Math.abs(mActualScale - mDefaultScale) >= MINIMUM_SCALE_INCREMENT) { 6464 zoomToDefault = true; 6465 } 6466 } else { 6467 zoomToDefault = true; 6468 } 6469 if (zoomToDefault) { 6470 mInZoomOverview = false; 6471 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 6472 if (left != NO_LEFTEDGE) { 6473 // add a 5pt padding to the left edge. 6474 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 6475 - mScrollX; 6476 // Re-calculate the zoom center so that the new scroll x will be 6477 // on the left edge. 6478 if (viewLeft > 0) { 6479 mZoomCenterX = viewLeft * mDefaultScale 6480 / (mDefaultScale - mActualScale); 6481 } else { 6482 scrollBy(viewLeft, 0); 6483 mZoomCenterX = 0; 6484 } 6485 } 6486 zoomWithPreview(mDefaultScale, true); 6487 } 6488 } 6489 6490 // Called by JNI to handle a touch on a node representing an email address, 6491 // address, or phone number 6492 private void overrideLoading(String url) { 6493 mCallbackProxy.uiOverrideUrlLoading(url); 6494 } 6495 6496 @Override 6497 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6498 boolean result = false; 6499 if (inEditingMode()) { 6500 result = mWebTextView.requestFocus(direction, 6501 previouslyFocusedRect); 6502 } else { 6503 result = super.requestFocus(direction, previouslyFocusedRect); 6504 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6505 // For cases such as GMail, where we gain focus from a direction, 6506 // we want to move to the first available link. 6507 // FIXME: If there are no visible links, we may not want to 6508 int fakeKeyDirection = 0; 6509 switch(direction) { 6510 case View.FOCUS_UP: 6511 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6512 break; 6513 case View.FOCUS_DOWN: 6514 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6515 break; 6516 case View.FOCUS_LEFT: 6517 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6518 break; 6519 case View.FOCUS_RIGHT: 6520 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6521 break; 6522 default: 6523 return result; 6524 } 6525 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6526 navHandledKey(fakeKeyDirection, 1, true, 0); 6527 } 6528 } 6529 } 6530 return result; 6531 } 6532 6533 @Override 6534 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6535 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6536 6537 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6538 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6539 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6540 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6541 6542 int measuredHeight = heightSize; 6543 int measuredWidth = widthSize; 6544 6545 // Grab the content size from WebViewCore. 6546 int contentHeight = contentToViewDimension(mContentHeight); 6547 int contentWidth = contentToViewDimension(mContentWidth); 6548 6549// Log.d(LOGTAG, "------- measure " + heightMode); 6550 6551 if (heightMode != MeasureSpec.EXACTLY) { 6552 mHeightCanMeasure = true; 6553 measuredHeight = contentHeight; 6554 if (heightMode == MeasureSpec.AT_MOST) { 6555 // If we are larger than the AT_MOST height, then our height can 6556 // no longer be measured and we should scroll internally. 6557 if (measuredHeight > heightSize) { 6558 measuredHeight = heightSize; 6559 mHeightCanMeasure = false; 6560 } 6561 } 6562 } else { 6563 mHeightCanMeasure = false; 6564 } 6565 if (mNativeClass != 0) { 6566 nativeSetHeightCanMeasure(mHeightCanMeasure); 6567 } 6568 // For the width, always use the given size unless unspecified. 6569 if (widthMode == MeasureSpec.UNSPECIFIED) { 6570 mWidthCanMeasure = true; 6571 measuredWidth = contentWidth; 6572 } else { 6573 mWidthCanMeasure = false; 6574 } 6575 6576 synchronized (this) { 6577 setMeasuredDimension(measuredWidth, measuredHeight); 6578 } 6579 } 6580 6581 @Override 6582 public boolean requestChildRectangleOnScreen(View child, 6583 Rect rect, 6584 boolean immediate) { 6585 rect.offset(child.getLeft() - child.getScrollX(), 6586 child.getTop() - child.getScrollY()); 6587 6588 Rect content = new Rect(viewToContentX(mScrollX), 6589 viewToContentY(mScrollY), 6590 viewToContentX(mScrollX + getWidth() 6591 - getVerticalScrollbarWidth()), 6592 viewToContentY(mScrollY + getViewHeightWithTitle())); 6593 content = nativeSubtractLayers(content); 6594 int screenTop = contentToViewY(content.top); 6595 int screenBottom = contentToViewY(content.bottom); 6596 int height = screenBottom - screenTop; 6597 int scrollYDelta = 0; 6598 6599 if (rect.bottom > screenBottom) { 6600 int oneThirdOfScreenHeight = height / 3; 6601 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6602 // If the rectangle is too tall to fit in the bottom two thirds 6603 // of the screen, place it at the top. 6604 scrollYDelta = rect.top - screenTop; 6605 } else { 6606 // If the rectangle will still fit on screen, we want its 6607 // top to be in the top third of the screen. 6608 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6609 } 6610 } else if (rect.top < screenTop) { 6611 scrollYDelta = rect.top - screenTop; 6612 } 6613 6614 int screenLeft = contentToViewX(content.left); 6615 int screenRight = contentToViewX(content.right); 6616 int width = screenRight - screenLeft; 6617 int scrollXDelta = 0; 6618 6619 if (rect.right > screenRight && rect.left > screenLeft) { 6620 if (rect.width() > width) { 6621 scrollXDelta += (rect.left - screenLeft); 6622 } else { 6623 scrollXDelta += (rect.right - screenRight); 6624 } 6625 } else if (rect.left < screenLeft) { 6626 scrollXDelta -= (screenLeft - rect.left); 6627 } 6628 6629 if ((scrollYDelta | scrollXDelta) != 0) { 6630 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6631 } 6632 6633 return false; 6634 } 6635 6636 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6637 String replace, int newStart, int newEnd) { 6638 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6639 arg.mReplace = replace; 6640 arg.mNewStart = newStart; 6641 arg.mNewEnd = newEnd; 6642 mTextGeneration++; 6643 arg.mTextGeneration = mTextGeneration; 6644 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6645 } 6646 6647 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6648 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6649 arg.mEvent = event; 6650 arg.mCurrentText = currentText; 6651 // Increase our text generation number, and pass it to webcore thread 6652 mTextGeneration++; 6653 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6654 // WebKit's document state is not saved until about to leave the page. 6655 // To make sure the host application, like Browser, has the up to date 6656 // document state when it goes to background, we force to save the 6657 // document state. 6658 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6659 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6660 cursorData(), 1000); 6661 } 6662 6663 /* package */ synchronized WebViewCore getWebViewCore() { 6664 return mWebViewCore; 6665 } 6666 6667 //------------------------------------------------------------------------- 6668 // Methods can be called from a separate thread, like WebViewCore 6669 // If it needs to call the View system, it has to send message. 6670 //------------------------------------------------------------------------- 6671 6672 /** 6673 * General handler to receive message coming from webkit thread 6674 */ 6675 class PrivateHandler extends Handler { 6676 @Override 6677 public void handleMessage(Message msg) { 6678 // exclude INVAL_RECT_MSG_ID since it is frequently output 6679 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6680 if (msg.what >= FIRST_PRIVATE_MSG_ID 6681 && msg.what <= LAST_PRIVATE_MSG_ID) { 6682 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6683 - FIRST_PRIVATE_MSG_ID]); 6684 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6685 && msg.what <= LAST_PACKAGE_MSG_ID) { 6686 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6687 - FIRST_PACKAGE_MSG_ID]); 6688 } else { 6689 Log.v(LOGTAG, Integer.toString(msg.what)); 6690 } 6691 } 6692 if (mWebViewCore == null) { 6693 // after WebView's destroy() is called, skip handling messages. 6694 return; 6695 } 6696 switch (msg.what) { 6697 case REMEMBER_PASSWORD: { 6698 mDatabase.setUsernamePassword( 6699 msg.getData().getString("host"), 6700 msg.getData().getString("username"), 6701 msg.getData().getString("password")); 6702 ((Message) msg.obj).sendToTarget(); 6703 break; 6704 } 6705 case NEVER_REMEMBER_PASSWORD: { 6706 mDatabase.setUsernamePassword( 6707 msg.getData().getString("host"), null, null); 6708 ((Message) msg.obj).sendToTarget(); 6709 break; 6710 } 6711 case PREVENT_DEFAULT_TIMEOUT: { 6712 // if timeout happens, cancel it so that it won't block UI 6713 // to continue handling touch events 6714 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6715 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6716 || (msg.arg1 == MotionEvent.ACTION_MOVE 6717 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6718 cancelWebCoreTouchEvent( 6719 viewToContentX((int) mLastTouchX + mScrollX), 6720 viewToContentY((int) mLastTouchY + mScrollY), 6721 true); 6722 } 6723 break; 6724 } 6725 case SWITCH_TO_SHORTPRESS: { 6726 if (mTouchMode == TOUCH_INIT_MODE) { 6727 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6728 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6729 updateSelection(); 6730 } else { 6731 // set to TOUCH_SHORTPRESS_MODE so that it won't 6732 // trigger double tap any more 6733 mTouchMode = TOUCH_SHORTPRESS_MODE; 6734 } 6735 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6736 mTouchMode = TOUCH_DONE_MODE; 6737 } 6738 break; 6739 } 6740 case SWITCH_TO_LONGPRESS: { 6741 if (inFullScreenMode() || mDeferTouchProcess) { 6742 TouchEventData ted = new TouchEventData(); 6743 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6744 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6745 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6746 // metaState for long press is tricky. Should it be the 6747 // state when the press started or when the press was 6748 // released? Or some intermediary key state? For 6749 // simplicity for now, we don't set it. 6750 ted.mMetaState = 0; 6751 ted.mReprocess = mDeferTouchProcess; 6752 if (mDeferTouchProcess) { 6753 ted.mViewX = mLastTouchX; 6754 ted.mViewY = mLastTouchY; 6755 } 6756 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6757 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6758 mTouchMode = TOUCH_DONE_MODE; 6759 performLongClick(); 6760 rebuildWebTextView(); 6761 } 6762 break; 6763 } 6764 case RELEASE_SINGLE_TAP: { 6765 doShortPress(); 6766 break; 6767 } 6768 case SCROLL_BY_MSG_ID: 6769 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6770 break; 6771 case SYNC_SCROLL_TO_MSG_ID: 6772 if (mUserScroll) { 6773 // if user has scrolled explicitly, don't sync the 6774 // scroll position any more 6775 mUserScroll = false; 6776 break; 6777 } 6778 // fall through 6779 case SCROLL_TO_MSG_ID: 6780 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6781 // if we can't scroll to the exact position due to pin, 6782 // send a message to WebCore to re-scroll when we get a 6783 // new picture 6784 mUserScroll = false; 6785 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6786 msg.arg1, msg.arg2); 6787 } 6788 break; 6789 case SPAWN_SCROLL_TO_MSG_ID: 6790 spawnContentScrollTo(msg.arg1, msg.arg2); 6791 break; 6792 case UPDATE_ZOOM_RANGE: { 6793 WebViewCore.RestoreState restoreState 6794 = (WebViewCore.RestoreState) msg.obj; 6795 // mScrollX contains the new minPrefWidth 6796 updateZoomRange(restoreState, getViewWidth(), 6797 restoreState.mScrollX, false); 6798 break; 6799 } 6800 case NEW_PICTURE_MSG_ID: { 6801 // If we've previously delayed deleting a root 6802 // layer, do it now. 6803 if (mDelayedDeleteRootLayer) { 6804 mDelayedDeleteRootLayer = false; 6805 nativeSetRootLayer(0); 6806 } 6807 WebSettings settings = mWebViewCore.getSettings(); 6808 // called for new content 6809 final int viewWidth = getViewWidth(); 6810 final WebViewCore.DrawData draw = 6811 (WebViewCore.DrawData) msg.obj; 6812 final Point viewSize = draw.mViewPoint; 6813 boolean useWideViewport = settings.getUseWideViewPort(); 6814 WebViewCore.RestoreState restoreState = draw.mRestoreState; 6815 boolean hasRestoreState = restoreState != null; 6816 if (hasRestoreState) { 6817 updateZoomRange(restoreState, viewSize.x, 6818 draw.mMinPrefWidth, true); 6819 if (!mDrawHistory) { 6820 mInZoomOverview = false; 6821 6822 if (mInitialScaleInPercent > 0) { 6823 setNewZoomScale(mInitialScaleInPercent / 100.0f, 6824 mInitialScaleInPercent != mTextWrapScale * 100, 6825 false); 6826 } else if (restoreState.mViewScale > 0) { 6827 mTextWrapScale = restoreState.mTextWrapScale; 6828 setNewZoomScale(restoreState.mViewScale, false, 6829 false); 6830 } else { 6831 mInZoomOverview = useWideViewport 6832 && settings.getLoadWithOverviewMode(); 6833 float scale; 6834 if (mInZoomOverview) { 6835 scale = (float) viewWidth 6836 / DEFAULT_VIEWPORT_WIDTH; 6837 } else { 6838 scale = restoreState.mTextWrapScale; 6839 } 6840 setNewZoomScale(scale, Math.abs(scale 6841 - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT, 6842 false); 6843 } 6844 setContentScrollTo(restoreState.mScrollX, 6845 restoreState.mScrollY); 6846 // As we are on a new page, remove the WebTextView. This 6847 // is necessary for page loads driven by webkit, and in 6848 // particular when the user was on a password field, so 6849 // the WebTextView was visible. 6850 clearTextEntry(false); 6851 // update the zoom buttons as the scale can be changed 6852 if (getSettings().getBuiltInZoomControls()) { 6853 updateZoomButtonsEnabled(); 6854 } 6855 } 6856 } 6857 // We update the layout (i.e. request a layout from the 6858 // view system) if the last view size that we sent to 6859 // WebCore matches the view size of the picture we just 6860 // received in the fixed dimension. 6861 final boolean updateLayout = viewSize.x == mLastWidthSent 6862 && viewSize.y == mLastHeightSent; 6863 recordNewContentSize(draw.mWidthHeight.x, 6864 draw.mWidthHeight.y 6865 + (mFindIsUp ? mFindHeight : 0), updateLayout); 6866 if (DebugFlags.WEB_VIEW) { 6867 Rect b = draw.mInvalRegion.getBounds(); 6868 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6869 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6870 } 6871 invalidateContentRect(draw.mInvalRegion.getBounds()); 6872 if (mPictureListener != null) { 6873 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6874 } 6875 if (useWideViewport) { 6876 // limit mZoomOverviewWidth upper bound to 6877 // sMaxViewportWidth so that if the page doesn't behave 6878 // well, the WebView won't go insane. limit the lower 6879 // bound to match the default scale for mobile sites. 6880 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 6881 .max((int) (viewWidth / mDefaultScale), Math 6882 .max(draw.mMinPrefWidth, 6883 draw.mViewPoint.x))); 6884 } 6885 if (!mMinZoomScaleFixed) { 6886 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 6887 } 6888 if (!mDrawHistory && mInZoomOverview) { 6889 // fit the content width to the current view. Ignore 6890 // the rounding error case. 6891 if (Math.abs((viewWidth * mInvActualScale) 6892 - mZoomOverviewWidth) > 1) { 6893 setNewZoomScale((float) viewWidth 6894 / mZoomOverviewWidth, Math.abs(mActualScale 6895 - mTextWrapScale) < MINIMUM_SCALE_INCREMENT, 6896 false); 6897 } 6898 } 6899 if (draw.mFocusSizeChanged && inEditingMode()) { 6900 mFocusSizeChanged = true; 6901 } 6902 if (hasRestoreState) { 6903 mViewManager.postReadyToDrawAll(); 6904 } 6905 break; 6906 } 6907 case WEBCORE_INITIALIZED_MSG_ID: 6908 // nativeCreate sets mNativeClass to a non-zero value 6909 nativeCreate(msg.arg1); 6910 break; 6911 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6912 // Make sure that the textfield is currently focused 6913 // and representing the same node as the pointer. 6914 if (inEditingMode() && 6915 mWebTextView.isSameTextField(msg.arg1)) { 6916 if (msg.getData().getBoolean("password")) { 6917 Spannable text = (Spannable) mWebTextView.getText(); 6918 int start = Selection.getSelectionStart(text); 6919 int end = Selection.getSelectionEnd(text); 6920 mWebTextView.setInPassword(true); 6921 // Restore the selection, which may have been 6922 // ruined by setInPassword. 6923 Spannable pword = 6924 (Spannable) mWebTextView.getText(); 6925 Selection.setSelection(pword, start, end); 6926 // If the text entry has created more events, ignore 6927 // this one. 6928 } else if (msg.arg2 == mTextGeneration) { 6929 mWebTextView.setTextAndKeepSelection( 6930 (String) msg.obj); 6931 } 6932 } 6933 break; 6934 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6935 displaySoftKeyboard(true); 6936 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6937 (WebViewCore.TextSelectionData) msg.obj); 6938 break; 6939 case UPDATE_TEXT_SELECTION_MSG_ID: 6940 // If no textfield was in focus, and the user touched one, 6941 // causing it to send this message, then WebTextView has not 6942 // been set up yet. Rebuild it so it can set its selection. 6943 rebuildWebTextView(); 6944 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6945 (WebViewCore.TextSelectionData) msg.obj); 6946 break; 6947 case RETURN_LABEL: 6948 if (inEditingMode() 6949 && mWebTextView.isSameTextField(msg.arg1)) { 6950 mWebTextView.setHint((String) msg.obj); 6951 InputMethodManager imm 6952 = InputMethodManager.peekInstance(); 6953 // The hint is propagated to the IME in 6954 // onCreateInputConnection. If the IME is already 6955 // active, restart it so that its hint text is updated. 6956 if (imm != null && imm.isActive(mWebTextView)) { 6957 imm.restartInput(mWebTextView); 6958 } 6959 } 6960 break; 6961 case MOVE_OUT_OF_PLUGIN: 6962 navHandledKey(msg.arg1, 1, false, 0); 6963 break; 6964 case UPDATE_TEXT_ENTRY_MSG_ID: 6965 // this is sent after finishing resize in WebViewCore. Make 6966 // sure the text edit box is still on the screen. 6967 if (inEditingMode() && nativeCursorIsTextInput()) { 6968 mWebTextView.bringIntoView(); 6969 rebuildWebTextView(); 6970 } 6971 break; 6972 case CLEAR_TEXT_ENTRY: 6973 clearTextEntry(false); 6974 break; 6975 case INVAL_RECT_MSG_ID: { 6976 Rect r = (Rect)msg.obj; 6977 if (r == null) { 6978 invalidate(); 6979 } else { 6980 // we need to scale r from content into view coords, 6981 // which viewInvalidate() does for us 6982 viewInvalidate(r.left, r.top, r.right, r.bottom); 6983 } 6984 break; 6985 } 6986 case IMMEDIATE_REPAINT_MSG_ID: { 6987 invalidate(); 6988 break; 6989 } 6990 case SET_ROOT_LAYER_MSG_ID: { 6991 if (0 == msg.arg1) { 6992 // Null indicates deleting the old layer, but 6993 // don't actually do so until we've got the 6994 // new page to display. 6995 mDelayedDeleteRootLayer = true; 6996 } else { 6997 mDelayedDeleteRootLayer = false; 6998 nativeSetRootLayer(msg.arg1); 6999 invalidate(); 7000 } 7001 break; 7002 } 7003 case REQUEST_FORM_DATA: 7004 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7005 if (mWebTextView.isSameTextField(msg.arg1)) { 7006 mWebTextView.setAdapterCustom(adapter); 7007 } 7008 break; 7009 case RESUME_WEBCORE_PRIORITY: 7010 WebViewCore.resumePriority(); 7011 WebViewCore.resumeUpdatePicture(mWebViewCore); 7012 break; 7013 7014 case LONG_PRESS_CENTER: 7015 // as this is shared by keydown and trackballdown, reset all 7016 // the states 7017 mGotCenterDown = false; 7018 mTrackballDown = false; 7019 performLongClick(); 7020 break; 7021 7022 case WEBCORE_NEED_TOUCH_EVENTS: 7023 mForwardTouchEvents = (msg.arg1 != 0); 7024 break; 7025 7026 case PREVENT_TOUCH_ID: 7027 if (inFullScreenMode()) { 7028 break; 7029 } 7030 if (msg.obj == null) { 7031 if (msg.arg1 == MotionEvent.ACTION_DOWN 7032 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7033 // if prevent default is called from WebCore, UI 7034 // will not handle the rest of the touch events any 7035 // more. 7036 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7037 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7038 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7039 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7040 // the return for the first ACTION_MOVE will decide 7041 // whether UI will handle touch or not. Currently no 7042 // support for alternating prevent default 7043 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7044 : PREVENT_DEFAULT_NO; 7045 } 7046 } else if (msg.arg2 == 0) { 7047 // prevent default is not called in WebCore, so the 7048 // message needs to be reprocessed in UI 7049 TouchEventData ted = (TouchEventData) msg.obj; 7050 switch (ted.mAction) { 7051 case MotionEvent.ACTION_DOWN: 7052 mLastDeferTouchX = ted.mViewX; 7053 mLastDeferTouchY = ted.mViewY; 7054 mDeferTouchMode = TOUCH_INIT_MODE; 7055 break; 7056 case MotionEvent.ACTION_MOVE: { 7057 // no snapping in defer process 7058 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7059 mDeferTouchMode = TOUCH_DRAG_MODE; 7060 mLastDeferTouchX = ted.mViewX; 7061 mLastDeferTouchY = ted.mViewY; 7062 startDrag(); 7063 } 7064 int deltaX = pinLocX((int) (mScrollX 7065 + mLastDeferTouchX - ted.mViewX)) 7066 - mScrollX; 7067 int deltaY = pinLocY((int) (mScrollY 7068 + mLastDeferTouchY - ted.mViewY)) 7069 - mScrollY; 7070 doDrag(deltaX, deltaY); 7071 if (deltaX != 0) mLastDeferTouchX = ted.mViewX; 7072 if (deltaY != 0) mLastDeferTouchY = ted.mViewY; 7073 break; 7074 } 7075 case MotionEvent.ACTION_UP: 7076 case MotionEvent.ACTION_CANCEL: 7077 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7078 // no fling in defer process 7079 mScroller.springback(mScrollX, mScrollY, 0, 7080 computeMaxScrollX(), 0, 7081 computeMaxScrollY()); 7082 invalidate(); 7083 WebViewCore.resumePriority(); 7084 WebViewCore.resumeUpdatePicture(mWebViewCore); 7085 } 7086 mDeferTouchMode = TOUCH_DONE_MODE; 7087 break; 7088 case WebViewCore.ACTION_DOUBLETAP: 7089 // doDoubleTap() needs mLastTouchX/Y as anchor 7090 mLastTouchX = ted.mViewX; 7091 mLastTouchY = ted.mViewY; 7092 doDoubleTap(); 7093 mDeferTouchMode = TOUCH_DONE_MODE; 7094 break; 7095 case WebViewCore.ACTION_LONGPRESS: 7096 HitTestResult hitTest = getHitTestResult(); 7097 if (hitTest != null && hitTest.mType 7098 != HitTestResult.UNKNOWN_TYPE) { 7099 performLongClick(); 7100 rebuildWebTextView(); 7101 } 7102 mDeferTouchMode = TOUCH_DONE_MODE; 7103 break; 7104 } 7105 } 7106 break; 7107 7108 case REQUEST_KEYBOARD: 7109 if (msg.arg1 == 0) { 7110 hideSoftKeyboard(); 7111 } else { 7112 displaySoftKeyboard(false); 7113 } 7114 break; 7115 7116 case FIND_AGAIN: 7117 // Ignore if find has been dismissed. 7118 if (mFindIsUp) { 7119 findAll(mLastFind); 7120 } 7121 break; 7122 7123 case DRAG_HELD_MOTIONLESS: 7124 mHeldMotionless = MOTIONLESS_TRUE; 7125 invalidate(); 7126 // fall through to keep scrollbars awake 7127 7128 case AWAKEN_SCROLL_BARS: 7129 if (mTouchMode == TOUCH_DRAG_MODE 7130 && mHeldMotionless == MOTIONLESS_TRUE) { 7131 awakenScrollBars(ViewConfiguration 7132 .getScrollDefaultDelay(), false); 7133 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7134 .obtainMessage(AWAKEN_SCROLL_BARS), 7135 ViewConfiguration.getScrollDefaultDelay()); 7136 } 7137 break; 7138 7139 case DO_MOTION_UP: 7140 doMotionUp(msg.arg1, msg.arg2); 7141 break; 7142 7143 case SHOW_FULLSCREEN: { 7144 View view = (View) msg.obj; 7145 int npp = msg.arg1; 7146 7147 if (mFullScreenHolder != null) { 7148 Log.w(LOGTAG, "Should not have another full screen."); 7149 mFullScreenHolder.dismiss(); 7150 } 7151 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7152 mFullScreenHolder.setContentView(view); 7153 mFullScreenHolder.setCancelable(false); 7154 mFullScreenHolder.setCanceledOnTouchOutside(false); 7155 mFullScreenHolder.show(); 7156 7157 break; 7158 } 7159 case HIDE_FULLSCREEN: 7160 if (inFullScreenMode()) { 7161 mFullScreenHolder.dismiss(); 7162 mFullScreenHolder = null; 7163 } 7164 break; 7165 7166 case DOM_FOCUS_CHANGED: 7167 if (inEditingMode()) { 7168 nativeClearCursor(); 7169 rebuildWebTextView(); 7170 } 7171 break; 7172 7173 case SHOW_RECT_MSG_ID: { 7174 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7175 int x = mScrollX; 7176 int left = contentToViewX(data.mLeft); 7177 int width = contentToViewDimension(data.mWidth); 7178 int maxWidth = contentToViewDimension(data.mContentWidth); 7179 int viewWidth = getViewWidth(); 7180 if (width < viewWidth) { 7181 // center align 7182 x += left + width / 2 - mScrollX - viewWidth / 2; 7183 } else { 7184 x += (int) (left + data.mXPercentInDoc * width 7185 - mScrollX - data.mXPercentInView * viewWidth); 7186 } 7187 if (DebugFlags.WEB_VIEW) { 7188 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7189 width + ",maxWidth=" + maxWidth + 7190 ",viewWidth=" + viewWidth + ",x=" 7191 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7192 ",xPercentInView=" + data.mXPercentInView+ ")"); 7193 } 7194 // use the passing content width to cap x as the current 7195 // mContentWidth may not be updated yet 7196 x = Math.max(0, 7197 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7198 int top = contentToViewY(data.mTop); 7199 int height = contentToViewDimension(data.mHeight); 7200 int maxHeight = contentToViewDimension(data.mContentHeight); 7201 int viewHeight = getViewHeight(); 7202 int y = (int) (top + data.mYPercentInDoc * height - 7203 data.mYPercentInView * viewHeight); 7204 if (DebugFlags.WEB_VIEW) { 7205 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7206 height + ",maxHeight=" + maxHeight + 7207 ",viewHeight=" + viewHeight + ",y=" 7208 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7209 ",yPercentInView=" + data.mYPercentInView+ ")"); 7210 } 7211 // use the passing content height to cap y as the current 7212 // mContentHeight may not be updated yet 7213 y = Math.max(0, 7214 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7215 // We need to take into account the visible title height 7216 // when scrolling since y is an absolute view position. 7217 y = Math.max(0, y - getVisibleTitleHeight()); 7218 scrollTo(x, y); 7219 } 7220 break; 7221 7222 case CENTER_FIT_RECT: 7223 Rect r = (Rect)msg.obj; 7224 mInZoomOverview = false; 7225 centerFitRect(r.left, r.top, r.width(), r.height()); 7226 break; 7227 7228 case SET_SCROLLBAR_MODES: 7229 mHorizontalScrollBarMode = msg.arg1; 7230 mVerticalScrollBarMode = msg.arg2; 7231 break; 7232 7233 default: 7234 super.handleMessage(msg); 7235 break; 7236 } 7237 } 7238 } 7239 7240 /** 7241 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7242 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7243 */ 7244 private void updateTextSelectionFromMessage(int nodePointer, 7245 int textGeneration, WebViewCore.TextSelectionData data) { 7246 if (inEditingMode() 7247 && mWebTextView.isSameTextField(nodePointer) 7248 && textGeneration == mTextGeneration) { 7249 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7250 } 7251 } 7252 7253 // Class used to use a dropdown for a <select> element 7254 private class InvokeListBox implements Runnable { 7255 // Whether the listbox allows multiple selection. 7256 private boolean mMultiple; 7257 // Passed in to a list with multiple selection to tell 7258 // which items are selected. 7259 private int[] mSelectedArray; 7260 // Passed in to a list with single selection to tell 7261 // where the initial selection is. 7262 private int mSelection; 7263 7264 private Container[] mContainers; 7265 7266 // Need these to provide stable ids to my ArrayAdapter, 7267 // which normally does not have stable ids. (Bug 1250098) 7268 private class Container extends Object { 7269 /** 7270 * Possible values for mEnabled. Keep in sync with OptionStatus in 7271 * WebViewCore.cpp 7272 */ 7273 final static int OPTGROUP = -1; 7274 final static int OPTION_DISABLED = 0; 7275 final static int OPTION_ENABLED = 1; 7276 7277 String mString; 7278 int mEnabled; 7279 int mId; 7280 7281 public String toString() { 7282 return mString; 7283 } 7284 } 7285 7286 /** 7287 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7288 * and allow filtering. 7289 */ 7290 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7291 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7292 super(context, 7293 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7294 com.android.internal.R.layout.select_dialog_singlechoice, 7295 objects); 7296 } 7297 7298 @Override 7299 public View getView(int position, View convertView, 7300 ViewGroup parent) { 7301 // Always pass in null so that we will get a new CheckedTextView 7302 // Otherwise, an item which was previously used as an <optgroup> 7303 // element (i.e. has no check), could get used as an <option> 7304 // element, which needs a checkbox/radio, but it would not have 7305 // one. 7306 convertView = super.getView(position, null, parent); 7307 Container c = item(position); 7308 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7309 // ListView does not draw dividers between disabled and 7310 // enabled elements. Use a LinearLayout to provide dividers 7311 LinearLayout layout = new LinearLayout(mContext); 7312 layout.setOrientation(LinearLayout.VERTICAL); 7313 if (position > 0) { 7314 View dividerTop = new View(mContext); 7315 dividerTop.setBackgroundResource( 7316 android.R.drawable.divider_horizontal_bright); 7317 layout.addView(dividerTop); 7318 } 7319 7320 if (Container.OPTGROUP == c.mEnabled) { 7321 // Currently select_dialog_multichoice and 7322 // select_dialog_singlechoice are CheckedTextViews. If 7323 // that changes, the class cast will no longer be valid. 7324 Assert.assertTrue( 7325 convertView instanceof CheckedTextView); 7326 ((CheckedTextView) convertView).setCheckMarkDrawable( 7327 null); 7328 } else { 7329 // c.mEnabled == Container.OPTION_DISABLED 7330 // Draw the disabled element in a disabled state. 7331 convertView.setEnabled(false); 7332 } 7333 7334 layout.addView(convertView); 7335 if (position < getCount() - 1) { 7336 View dividerBottom = new View(mContext); 7337 dividerBottom.setBackgroundResource( 7338 android.R.drawable.divider_horizontal_bright); 7339 layout.addView(dividerBottom); 7340 } 7341 return layout; 7342 } 7343 return convertView; 7344 } 7345 7346 @Override 7347 public boolean hasStableIds() { 7348 // AdapterView's onChanged method uses this to determine whether 7349 // to restore the old state. Return false so that the old (out 7350 // of date) state does not replace the new, valid state. 7351 return false; 7352 } 7353 7354 private Container item(int position) { 7355 if (position < 0 || position >= getCount()) { 7356 return null; 7357 } 7358 return (Container) getItem(position); 7359 } 7360 7361 @Override 7362 public long getItemId(int position) { 7363 Container item = item(position); 7364 if (item == null) { 7365 return -1; 7366 } 7367 return item.mId; 7368 } 7369 7370 @Override 7371 public boolean areAllItemsEnabled() { 7372 return false; 7373 } 7374 7375 @Override 7376 public boolean isEnabled(int position) { 7377 Container item = item(position); 7378 if (item == null) { 7379 return false; 7380 } 7381 return Container.OPTION_ENABLED == item.mEnabled; 7382 } 7383 } 7384 7385 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7386 mMultiple = true; 7387 mSelectedArray = selected; 7388 7389 int length = array.length; 7390 mContainers = new Container[length]; 7391 for (int i = 0; i < length; i++) { 7392 mContainers[i] = new Container(); 7393 mContainers[i].mString = array[i]; 7394 mContainers[i].mEnabled = enabled[i]; 7395 mContainers[i].mId = i; 7396 } 7397 } 7398 7399 private InvokeListBox(String[] array, int[] enabled, int selection) { 7400 mSelection = selection; 7401 mMultiple = false; 7402 7403 int length = array.length; 7404 mContainers = new Container[length]; 7405 for (int i = 0; i < length; i++) { 7406 mContainers[i] = new Container(); 7407 mContainers[i].mString = array[i]; 7408 mContainers[i].mEnabled = enabled[i]; 7409 mContainers[i].mId = i; 7410 } 7411 } 7412 7413 /* 7414 * Whenever the data set changes due to filtering, this class ensures 7415 * that the checked item remains checked. 7416 */ 7417 private class SingleDataSetObserver extends DataSetObserver { 7418 private long mCheckedId; 7419 private ListView mListView; 7420 private Adapter mAdapter; 7421 7422 /* 7423 * Create a new observer. 7424 * @param id The ID of the item to keep checked. 7425 * @param l ListView for getting and clearing the checked states 7426 * @param a Adapter for getting the IDs 7427 */ 7428 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7429 mCheckedId = id; 7430 mListView = l; 7431 mAdapter = a; 7432 } 7433 7434 public void onChanged() { 7435 // The filter may have changed which item is checked. Find the 7436 // item that the ListView thinks is checked. 7437 int position = mListView.getCheckedItemPosition(); 7438 long id = mAdapter.getItemId(position); 7439 if (mCheckedId != id) { 7440 // Clear the ListView's idea of the checked item, since 7441 // it is incorrect 7442 mListView.clearChoices(); 7443 // Search for mCheckedId. If it is in the filtered list, 7444 // mark it as checked 7445 int count = mAdapter.getCount(); 7446 for (int i = 0; i < count; i++) { 7447 if (mAdapter.getItemId(i) == mCheckedId) { 7448 mListView.setItemChecked(i, true); 7449 break; 7450 } 7451 } 7452 } 7453 } 7454 7455 public void onInvalidate() {} 7456 } 7457 7458 public void run() { 7459 final ListView listView = (ListView) LayoutInflater.from(mContext) 7460 .inflate(com.android.internal.R.layout.select_dialog, null); 7461 final MyArrayListAdapter adapter = new 7462 MyArrayListAdapter(mContext, mContainers, mMultiple); 7463 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7464 .setView(listView).setCancelable(true) 7465 .setInverseBackgroundForced(true); 7466 7467 if (mMultiple) { 7468 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7469 public void onClick(DialogInterface dialog, int which) { 7470 mWebViewCore.sendMessage( 7471 EventHub.LISTBOX_CHOICES, 7472 adapter.getCount(), 0, 7473 listView.getCheckedItemPositions()); 7474 }}); 7475 b.setNegativeButton(android.R.string.cancel, 7476 new DialogInterface.OnClickListener() { 7477 public void onClick(DialogInterface dialog, int which) { 7478 mWebViewCore.sendMessage( 7479 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7480 }}); 7481 } 7482 final AlertDialog dialog = b.create(); 7483 listView.setAdapter(adapter); 7484 listView.setFocusableInTouchMode(true); 7485 // There is a bug (1250103) where the checks in a ListView with 7486 // multiple items selected are associated with the positions, not 7487 // the ids, so the items do not properly retain their checks when 7488 // filtered. Do not allow filtering on multiple lists until 7489 // that bug is fixed. 7490 7491 listView.setTextFilterEnabled(!mMultiple); 7492 if (mMultiple) { 7493 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7494 int length = mSelectedArray.length; 7495 for (int i = 0; i < length; i++) { 7496 listView.setItemChecked(mSelectedArray[i], true); 7497 } 7498 } else { 7499 listView.setOnItemClickListener(new OnItemClickListener() { 7500 public void onItemClick(AdapterView parent, View v, 7501 int position, long id) { 7502 mWebViewCore.sendMessage( 7503 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 7504 dialog.dismiss(); 7505 } 7506 }); 7507 if (mSelection != -1) { 7508 listView.setSelection(mSelection); 7509 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7510 listView.setItemChecked(mSelection, true); 7511 DataSetObserver observer = new SingleDataSetObserver( 7512 adapter.getItemId(mSelection), listView, adapter); 7513 adapter.registerDataSetObserver(observer); 7514 } 7515 } 7516 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7517 public void onCancel(DialogInterface dialog) { 7518 mWebViewCore.sendMessage( 7519 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7520 } 7521 }); 7522 dialog.show(); 7523 } 7524 } 7525 7526 /* 7527 * Request a dropdown menu for a listbox with multiple selection. 7528 * 7529 * @param array Labels for the listbox. 7530 * @param enabledArray State for each element in the list. See static 7531 * integers in Container class. 7532 * @param selectedArray Which positions are initally selected. 7533 */ 7534 void requestListBox(String[] array, int[] enabledArray, int[] 7535 selectedArray) { 7536 mPrivateHandler.post( 7537 new InvokeListBox(array, enabledArray, selectedArray)); 7538 } 7539 7540 private void updateZoomRange(WebViewCore.RestoreState restoreState, 7541 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 7542 if (restoreState.mMinScale == 0) { 7543 if (restoreState.mMobileSite) { 7544 if (minPrefWidth > Math.max(0, viewWidth)) { 7545 mMinZoomScale = (float) viewWidth / minPrefWidth; 7546 mMinZoomScaleFixed = false; 7547 if (updateZoomOverview) { 7548 WebSettings settings = getSettings(); 7549 mInZoomOverview = settings.getUseWideViewPort() && 7550 settings.getLoadWithOverviewMode(); 7551 } 7552 } else { 7553 mMinZoomScale = restoreState.mDefaultScale; 7554 mMinZoomScaleFixed = true; 7555 } 7556 } else { 7557 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 7558 mMinZoomScaleFixed = false; 7559 } 7560 } else { 7561 mMinZoomScale = restoreState.mMinScale; 7562 mMinZoomScaleFixed = true; 7563 } 7564 if (restoreState.mMaxScale == 0) { 7565 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 7566 } else { 7567 mMaxZoomScale = restoreState.mMaxScale; 7568 } 7569 } 7570 7571 /* 7572 * Request a dropdown menu for a listbox with single selection or a single 7573 * <select> element. 7574 * 7575 * @param array Labels for the listbox. 7576 * @param enabledArray State for each element in the list. See static 7577 * integers in Container class. 7578 * @param selection Which position is initally selected. 7579 */ 7580 void requestListBox(String[] array, int[] enabledArray, int selection) { 7581 mPrivateHandler.post( 7582 new InvokeListBox(array, enabledArray, selection)); 7583 } 7584 7585 // called by JNI 7586 private void sendMoveFocus(int frame, int node) { 7587 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7588 new WebViewCore.CursorData(frame, node, 0, 0)); 7589 } 7590 7591 // called by JNI 7592 private void sendMoveMouse(int frame, int node, int x, int y) { 7593 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7594 new WebViewCore.CursorData(frame, node, x, y)); 7595 } 7596 7597 /* 7598 * Send a mouse move event to the webcore thread. 7599 * 7600 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7601 * which wants key events, but it is not the focus. This 7602 * will make the visual appear as though nothing is in 7603 * focus. Remove the WebTextView, if present, and stop 7604 * drawing the blinking caret. 7605 * called by JNI 7606 */ 7607 private void sendMoveMouseIfLatest(boolean removeFocus) { 7608 if (removeFocus) { 7609 clearTextEntry(true); 7610 } 7611 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7612 cursorData()); 7613 } 7614 7615 // called by JNI 7616 private void sendMotionUp(int touchGeneration, 7617 int frame, int node, int x, int y) { 7618 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7619 touchUpData.mMoveGeneration = touchGeneration; 7620 touchUpData.mFrame = frame; 7621 touchUpData.mNode = node; 7622 touchUpData.mX = x; 7623 touchUpData.mY = y; 7624 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7625 } 7626 7627 7628 private int getScaledMaxXScroll() { 7629 int width; 7630 if (mHeightCanMeasure == false) { 7631 width = getViewWidth() / 4; 7632 } else { 7633 Rect visRect = new Rect(); 7634 calcOurVisibleRect(visRect); 7635 width = visRect.width() / 2; 7636 } 7637 // FIXME the divisor should be retrieved from somewhere 7638 return viewToContentX(width); 7639 } 7640 7641 private int getScaledMaxYScroll() { 7642 int height; 7643 if (mHeightCanMeasure == false) { 7644 height = getViewHeight() / 4; 7645 } else { 7646 Rect visRect = new Rect(); 7647 calcOurVisibleRect(visRect); 7648 height = visRect.height() / 2; 7649 } 7650 // FIXME the divisor should be retrieved from somewhere 7651 // the closest thing today is hard-coded into ScrollView.java 7652 // (from ScrollView.java, line 363) int maxJump = height/2; 7653 return Math.round(height * mInvActualScale); 7654 } 7655 7656 /** 7657 * Called by JNI to invalidate view 7658 */ 7659 private void viewInvalidate() { 7660 invalidate(); 7661 } 7662 7663 /** 7664 * Pass the key to the plugin. This assumes that nativeFocusIsPlugin() 7665 * returned true. 7666 */ 7667 private void letPluginHandleNavKey(int keyCode, long time, boolean down) { 7668 int keyEventAction; 7669 int eventHubAction; 7670 if (down) { 7671 keyEventAction = KeyEvent.ACTION_DOWN; 7672 eventHubAction = EventHub.KEY_DOWN; 7673 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7674 } else { 7675 keyEventAction = KeyEvent.ACTION_UP; 7676 eventHubAction = EventHub.KEY_UP; 7677 } 7678 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7679 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7680 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7681 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7682 , 0, 0, 0); 7683 mWebViewCore.sendMessage(eventHubAction, event); 7684 } 7685 7686 // return true if the key was handled 7687 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7688 long time) { 7689 if (mNativeClass == 0) { 7690 return false; 7691 } 7692 mLastCursorTime = time; 7693 mLastCursorBounds = nativeGetCursorRingBounds(); 7694 boolean keyHandled 7695 = nativeMoveCursor(keyCode, count, noScroll) == false; 7696 if (DebugFlags.WEB_VIEW) { 7697 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7698 + " mLastCursorTime=" + mLastCursorTime 7699 + " handled=" + keyHandled); 7700 } 7701 if (keyHandled == false || mHeightCanMeasure == false) { 7702 return keyHandled; 7703 } 7704 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7705 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7706 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7707 Rect visRect = new Rect(); 7708 calcOurVisibleRect(visRect); 7709 Rect outset = new Rect(visRect); 7710 int maxXScroll = visRect.width() / 2; 7711 int maxYScroll = visRect.height() / 2; 7712 outset.inset(-maxXScroll, -maxYScroll); 7713 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7714 return keyHandled; 7715 } 7716 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7717 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7718 maxXScroll); 7719 if (maxH > 0) { 7720 pinScrollBy(maxH, 0, true, 0); 7721 } else { 7722 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7723 -maxXScroll); 7724 if (maxH < 0) { 7725 pinScrollBy(maxH, 0, true, 0); 7726 } 7727 } 7728 if (mLastCursorBounds.isEmpty()) return keyHandled; 7729 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7730 return keyHandled; 7731 } 7732 if (DebugFlags.WEB_VIEW) { 7733 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7734 + contentCursorRingBounds); 7735 } 7736 requestRectangleOnScreen(viewCursorRingBounds); 7737 mUserScroll = true; 7738 return keyHandled; 7739 } 7740 7741 /** 7742 * Set the background color. It's white by default. Pass 7743 * zero to make the view transparent. 7744 * @param color the ARGB color described by Color.java 7745 */ 7746 public void setBackgroundColor(int color) { 7747 mBackgroundColor = color; 7748 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7749 } 7750 7751 public void debugDump() { 7752 nativeDebugDump(); 7753 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7754 } 7755 7756 /** 7757 * Draw the HTML page into the specified canvas. This call ignores any 7758 * view-specific zoom, scroll offset, or other changes. It does not draw 7759 * any view-specific chrome, such as progress or URL bars. 7760 * 7761 * @hide only needs to be accessible to Browser and testing 7762 */ 7763 public void drawPage(Canvas canvas) { 7764 mWebViewCore.drawContentPicture(canvas, 0, false, false); 7765 } 7766 7767 /** 7768 * Set the time to wait between passing touches to WebCore. See also the 7769 * TOUCH_SENT_INTERVAL member for further discussion. 7770 * 7771 * @hide This is only used by the DRT test application. 7772 */ 7773 public void setTouchInterval(int interval) { 7774 mCurrentTouchInterval = interval; 7775 } 7776 7777 /** 7778 * Update our cache with updatedText. 7779 * @param updatedText The new text to put in our cache. 7780 */ 7781 /* package */ void updateCachedTextfield(String updatedText) { 7782 // Also place our generation number so that when we look at the cache 7783 // we recognize that it is up to date. 7784 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7785 } 7786 7787 private native int nativeCacheHitFramePointer(); 7788 private native Rect nativeCacheHitNodeBounds(); 7789 private native int nativeCacheHitNodePointer(); 7790 /* package */ native void nativeClearCursor(); 7791 private native void nativeCreate(int ptr); 7792 private native int nativeCursorFramePointer(); 7793 private native Rect nativeCursorNodeBounds(); 7794 private native int nativeCursorNodePointer(); 7795 /* package */ native boolean nativeCursorMatchesFocus(); 7796 private native boolean nativeCursorIntersects(Rect visibleRect); 7797 private native boolean nativeCursorIsAnchor(); 7798 private native boolean nativeCursorIsTextInput(); 7799 private native Point nativeCursorPosition(); 7800 private native String nativeCursorText(); 7801 /** 7802 * Returns true if the native cursor node says it wants to handle key events 7803 * (ala plugins). This can only be called if mNativeClass is non-zero! 7804 */ 7805 private native boolean nativeCursorWantsKeyEvents(); 7806 private native void nativeDebugDump(); 7807 private native void nativeDestroy(); 7808 private native boolean nativeEvaluateLayersAnimations(); 7809 private native void nativeExtendSelection(int x, int y); 7810 private native void nativeDrawExtras(Canvas canvas, int extra); 7811 private native void nativeDumpDisplayTree(String urlOrNull); 7812 private native int nativeFindAll(String findLower, String findUpper); 7813 private native void nativeFindNext(boolean forward); 7814 /* package */ native int nativeFocusCandidateFramePointer(); 7815 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7816 /* package */ native boolean nativeFocusCandidateIsPassword(); 7817 private native boolean nativeFocusCandidateIsRtlText(); 7818 private native boolean nativeFocusCandidateIsTextInput(); 7819 /* package */ native int nativeFocusCandidateMaxLength(); 7820 /* package */ native String nativeFocusCandidateName(); 7821 private native Rect nativeFocusCandidateNodeBounds(); 7822 /* package */ native int nativeFocusCandidatePointer(); 7823 private native String nativeFocusCandidateText(); 7824 private native int nativeFocusCandidateTextSize(); 7825 /** 7826 * Returns an integer corresponding to WebView.cpp::type. 7827 * See WebTextView.setType() 7828 */ 7829 private native int nativeFocusCandidateType(); 7830 private native boolean nativeFocusIsPlugin(); 7831 private native Rect nativeFocusNodeBounds(); 7832 /* package */ native int nativeFocusNodePointer(); 7833 private native Rect nativeGetCursorRingBounds(); 7834 private native String nativeGetSelection(); 7835 private native boolean nativeHasCursorNode(); 7836 private native boolean nativeHasFocusNode(); 7837 private native void nativeHideCursor(); 7838 private native boolean nativeHitSelection(int x, int y); 7839 private native String nativeImageURI(int x, int y); 7840 private native void nativeInstrumentReport(); 7841 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7842 // return true if the page has been scrolled 7843 private native boolean nativeMotionUp(int x, int y, int slop); 7844 // returns false if it handled the key 7845 private native boolean nativeMoveCursor(int keyCode, int count, 7846 boolean noScroll); 7847 private native int nativeMoveGeneration(); 7848 private native void nativeMoveSelection(int x, int y); 7849 private native boolean nativePointInNavCache(int x, int y, int slop); 7850 // Like many other of our native methods, you must make sure that 7851 // mNativeClass is not null before calling this method. 7852 private native void nativeRecordButtons(boolean focused, 7853 boolean pressed, boolean invalidate); 7854 private native void nativeResetSelection(); 7855 private native void nativeSelectAll(); 7856 private native void nativeSelectBestAt(Rect rect); 7857 private native int nativeSelectionX(); 7858 private native int nativeSelectionY(); 7859 private native int nativeFindIndex(); 7860 private native void nativeSetExtendSelection(); 7861 private native void nativeSetFindIsEmpty(); 7862 private native void nativeSetFindIsUp(boolean isUp); 7863 private native void nativeSetFollowedLink(boolean followed); 7864 private native void nativeSetHeightCanMeasure(boolean measure); 7865 private native void nativeSetRootLayer(int layer); 7866 private native void nativeSetSelectionPointer(boolean set, 7867 float scale, int x, int y); 7868 private native boolean nativeStartSelection(int x, int y); 7869 private native void nativeSetSelectionRegion(boolean set); 7870 private native Rect nativeSubtractLayers(Rect content); 7871 private native int nativeTextGeneration(); 7872 // Never call this version except by updateCachedTextfield(String) - 7873 // we always want to pass in our generation number. 7874 private native void nativeUpdateCachedTextfield(String updatedText, 7875 int generation); 7876 private native boolean nativeWordSelection(int x, int y); 7877 // return NO_LEFTEDGE means failure. 7878 private static final int NO_LEFTEDGE = -1; 7879 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 7880} 7881