WebView.java revision 0358def77633b6548da06985cb22955a7e85abac
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 // Whether to forward the touch events to WebCore 467 private boolean mForwardTouchEvents = false; 468 469 // Whether to prevent default during touch. The initial value depends on 470 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 471 // for touch down. Otherwise UI will wait for the answer of the first 472 // confirmed move before taking over the control. 473 private static final int PREVENT_DEFAULT_NO = 0; 474 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 475 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 476 private static final int PREVENT_DEFAULT_YES = 3; 477 private static final int PREVENT_DEFAULT_IGNORE = 4; 478 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 479 480 // true when the touch movement exceeds the slop 481 private boolean mConfirmMove; 482 483 // if true, touch events will be first processed by WebCore, if prevent 484 // default is not set, the UI will continue handle them. 485 private boolean mDeferTouchProcess; 486 487 // to avoid interfering with the current touch events, track them 488 // separately. Currently no snapping or fling in the deferred process mode 489 private int mDeferTouchMode = TOUCH_DONE_MODE; 490 private float mLastDeferTouchX; 491 private float mLastDeferTouchY; 492 493 // To keep track of whether the current drag was initiated by a WebTextView, 494 // so that we know not to hide the cursor 495 boolean mDragFromTextInput; 496 497 // Whether or not to draw the cursor ring. 498 private boolean mDrawCursorRing = true; 499 500 // true if onPause has been called (and not onResume) 501 private boolean mIsPaused; 502 503 // true if, during a transition to a new page, we're delaying 504 // deleting a root layer until there's something to draw of the new page. 505 private boolean mDelayedDeleteRootLayer; 506 507 /** 508 * Customizable constant 509 */ 510 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 511 private int mTouchSlopSquare; 512 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 513 private int mDoubleTapSlopSquare; 514 // pre-computed density adjusted navigation slop 515 private int mNavSlop; 516 // This should be ViewConfiguration.getTapTimeout() 517 // But system time out is 100ms, which is too short for the browser. 518 // In the browser, if it switches out of tap too soon, jump tap won't work. 519 private static final int TAP_TIMEOUT = 200; 520 // This should be ViewConfiguration.getLongPressTimeout() 521 // But system time out is 500ms, which is too short for the browser. 522 // With a short timeout, it's difficult to treat trigger a short press. 523 private static final int LONG_PRESS_TIMEOUT = 1000; 524 // needed to avoid flinging after a pause of no movement 525 private static final int MIN_FLING_TIME = 250; 526 // draw unfiltered after drag is held without movement 527 private static final int MOTIONLESS_TIME = 100; 528 // The time that the Zoom Controls are visible before fading away 529 private static final long ZOOM_CONTROLS_TIMEOUT = 530 ViewConfiguration.getZoomControlsTimeout(); 531 // The amount of content to overlap between two screens when going through 532 // pages with the space bar, in pixels. 533 private static final int PAGE_SCROLL_OVERLAP = 24; 534 535 /** 536 * These prevent calling requestLayout if either dimension is fixed. This 537 * depends on the layout parameters and the measure specs. 538 */ 539 boolean mWidthCanMeasure; 540 boolean mHeightCanMeasure; 541 542 // Remember the last dimensions we sent to the native side so we can avoid 543 // sending the same dimensions more than once. 544 int mLastWidthSent; 545 int mLastHeightSent; 546 547 private int mContentWidth; // cache of value from WebViewCore 548 private int mContentHeight; // cache of value from WebViewCore 549 550 // Need to have the separate control for horizontal and vertical scrollbar 551 // style than the View's single scrollbar style 552 private boolean mOverlayHorizontalScrollbar = true; 553 private boolean mOverlayVerticalScrollbar = false; 554 555 // our standard speed. this way small distances will be traversed in less 556 // time than large distances, but we cap the duration, so that very large 557 // distances won't take too long to get there. 558 private static final int STD_SPEED = 480; // pixels per second 559 // time for the longest scroll animation 560 private static final int MAX_DURATION = 750; // milliseconds 561 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 562 private OverScroller mScroller; 563 private boolean mInOverScrollMode = false; 564 private static Paint mOverScrollBackground; 565 private static Paint mOverScrollBorder; 566 567 private boolean mWrapContent; 568 private static final int MOTIONLESS_FALSE = 0; 569 private static final int MOTIONLESS_PENDING = 1; 570 private static final int MOTIONLESS_TRUE = 2; 571 private static final int MOTIONLESS_IGNORE = 3; 572 private int mHeldMotionless; 573 574 // whether support multi-touch 575 private boolean mSupportMultiTouch; 576 // use the framework's ScaleGestureDetector to handle multi-touch 577 private ScaleGestureDetector mScaleDetector; 578 579 // the anchor point in the document space where VIEW_SIZE_CHANGED should 580 // apply to 581 private int mAnchorX; 582 private int mAnchorY; 583 584 /* 585 * Private message ids 586 */ 587 private static final int REMEMBER_PASSWORD = 1; 588 private static final int NEVER_REMEMBER_PASSWORD = 2; 589 private static final int SWITCH_TO_SHORTPRESS = 3; 590 private static final int SWITCH_TO_LONGPRESS = 4; 591 private static final int RELEASE_SINGLE_TAP = 5; 592 private static final int REQUEST_FORM_DATA = 6; 593 private static final int RESUME_WEBCORE_PRIORITY = 7; 594 private static final int DRAG_HELD_MOTIONLESS = 8; 595 private static final int AWAKEN_SCROLL_BARS = 9; 596 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 597 598 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 599 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 600 601 /* 602 * Package message ids 603 */ 604 //! arg1=x, arg2=y 605 static final int SCROLL_TO_MSG_ID = 101; 606 static final int SCROLL_BY_MSG_ID = 102; 607 //! arg1=x, arg2=y 608 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 609 //! arg1=x, arg2=y 610 static final int SYNC_SCROLL_TO_MSG_ID = 104; 611 static final int NEW_PICTURE_MSG_ID = 105; 612 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 613 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 614 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 615 static final int UPDATE_ZOOM_RANGE = 109; 616 static final int MOVE_OUT_OF_PLUGIN = 110; 617 static final int CLEAR_TEXT_ENTRY = 111; 618 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 619 static final int SHOW_RECT_MSG_ID = 113; 620 static final int LONG_PRESS_CENTER = 114; 621 static final int PREVENT_TOUCH_ID = 115; 622 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 623 // obj=Rect in doc coordinates 624 static final int INVAL_RECT_MSG_ID = 117; 625 static final int REQUEST_KEYBOARD = 118; 626 static final int DO_MOTION_UP = 119; 627 static final int SHOW_FULLSCREEN = 120; 628 static final int HIDE_FULLSCREEN = 121; 629 static final int DOM_FOCUS_CHANGED = 122; 630 static final int IMMEDIATE_REPAINT_MSG_ID = 123; 631 static final int SET_ROOT_LAYER_MSG_ID = 124; 632 static final int RETURN_LABEL = 125; 633 static final int FIND_AGAIN = 126; 634 static final int CENTER_FIT_RECT = 127; 635 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 636 static final int SET_SCROLLBAR_MODES = 129; 637 638 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 639 private static final int LAST_PACKAGE_MSG_ID = SET_SCROLLBAR_MODES; 640 641 static final String[] HandlerPrivateDebugString = { 642 "REMEMBER_PASSWORD", // = 1; 643 "NEVER_REMEMBER_PASSWORD", // = 2; 644 "SWITCH_TO_SHORTPRESS", // = 3; 645 "SWITCH_TO_LONGPRESS", // = 4; 646 "RELEASE_SINGLE_TAP", // = 5; 647 "REQUEST_FORM_DATA", // = 6; 648 "RESUME_WEBCORE_PRIORITY", // = 7; 649 "DRAG_HELD_MOTIONLESS", // = 8; 650 "AWAKEN_SCROLL_BARS", // = 9; 651 "PREVENT_DEFAULT_TIMEOUT" // = 10; 652 }; 653 654 static final String[] HandlerPackageDebugString = { 655 "SCROLL_TO_MSG_ID", // = 101; 656 "SCROLL_BY_MSG_ID", // = 102; 657 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 658 "SYNC_SCROLL_TO_MSG_ID", // = 104; 659 "NEW_PICTURE_MSG_ID", // = 105; 660 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 661 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 662 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 663 "UPDATE_ZOOM_RANGE", // = 109; 664 "MOVE_OUT_OF_PLUGIN", // = 110; 665 "CLEAR_TEXT_ENTRY", // = 111; 666 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 667 "SHOW_RECT_MSG_ID", // = 113; 668 "LONG_PRESS_CENTER", // = 114; 669 "PREVENT_TOUCH_ID", // = 115; 670 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 671 "INVAL_RECT_MSG_ID", // = 117; 672 "REQUEST_KEYBOARD", // = 118; 673 "DO_MOTION_UP", // = 119; 674 "SHOW_FULLSCREEN", // = 120; 675 "HIDE_FULLSCREEN", // = 121; 676 "DOM_FOCUS_CHANGED", // = 122; 677 "IMMEDIATE_REPAINT_MSG_ID", // = 123; 678 "SET_ROOT_LAYER_MSG_ID", // = 124; 679 "RETURN_LABEL", // = 125; 680 "FIND_AGAIN", // = 126; 681 "CENTER_FIT_RECT", // = 127; 682 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 683 "SET_SCROLLBAR_MODES" // = 129; 684 }; 685 686 // If the site doesn't use the viewport meta tag to specify the viewport, 687 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 688 static final int DEFAULT_VIEWPORT_WIDTH = 800; 689 690 // normally we try to fit the content to the minimum preferred width 691 // calculated by the Webkit. To avoid the bad behavior when some site's 692 // minimum preferred width keeps growing when changing the viewport width or 693 // the minimum preferred width is huge, an upper limit is needed. 694 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 695 696 // default scale limit. Depending on the display density 697 private static float DEFAULT_MAX_ZOOM_SCALE; 698 private static float DEFAULT_MIN_ZOOM_SCALE; 699 // scale limit, which can be set through viewport meta tag in the web page 700 private float mMaxZoomScale; 701 private float mMinZoomScale; 702 private boolean mMinZoomScaleFixed = true; 703 704 // initial scale in percent. 0 means using default. 705 private int mInitialScaleInPercent = 0; 706 707 // while in the zoom overview mode, the page's width is fully fit to the 708 // current window. The page is alive, in another words, you can click to 709 // follow the links. Double tap will toggle between zoom overview mode and 710 // the last zoom scale. 711 boolean mInZoomOverview = false; 712 713 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 714 // engadget always have wider mContentWidth no matter what viewport size is. 715 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 716 float mTextWrapScale; 717 718 // default scale. Depending on the display density. 719 static int DEFAULT_SCALE_PERCENT; 720 private float mDefaultScale; 721 722 private static float MINIMUM_SCALE_INCREMENT = 0.01f; 723 724 // set to true temporarily during ScaleGesture triggered zoom 725 private boolean mPreviewZoomOnly = false; 726 727 // computed scale and inverse, from mZoomWidth. 728 private float mActualScale; 729 private float mInvActualScale; 730 // if this is non-zero, it is used on drawing rather than mActualScale 731 private float mZoomScale; 732 private float mInvInitialZoomScale; 733 private float mInvFinalZoomScale; 734 private int mInitialScrollX; 735 private int mInitialScrollY; 736 private long mZoomStart; 737 private static final int ZOOM_ANIMATION_LENGTH = 500; 738 739 private boolean mUserScroll = false; 740 741 private int mSnapScrollMode = SNAP_NONE; 742 private static final int SNAP_NONE = 0; 743 private static final int SNAP_LOCK = 1; // not a separate state 744 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 745 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 746 private boolean mSnapPositive; 747 748 // keep these in sync with their counterparts in WebView.cpp 749 private static final int DRAW_EXTRAS_NONE = 0; 750 private static final int DRAW_EXTRAS_FIND = 1; 751 private static final int DRAW_EXTRAS_SELECTION = 2; 752 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 753 754 // keep this in sync with WebCore:ScrollbarMode in WebKit 755 private static final int SCROLLBAR_AUTO = 0; 756 private static final int SCROLLBAR_ALWAYSOFF = 1; 757 // as we auto fade scrollbar, this is ignored. 758 private static final int SCROLLBAR_ALWAYSON = 2; 759 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 760 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 761 762 /** 763 * Max distance to overscroll by in pixels. 764 * This how far content can be pulled beyond its normal bounds by the user. 765 */ 766 private int mOverscrollDistance; 767 768 /** 769 * Max distance to overfling by in pixels. 770 * This is how far flinged content can move beyond the end of its normal bounds. 771 */ 772 private int mOverflingDistance; 773 774 /* 775 * These manage the edge glow effect when flung or pulled beyond the edges. 776 * If one is not null, all are not null. Checking one for null is as good as checking each. 777 */ 778 private EdgeGlow mEdgeGlowTop; 779 private EdgeGlow mEdgeGlowBottom; 780 private EdgeGlow mEdgeGlowLeft; 781 private EdgeGlow mEdgeGlowRight; 782 783 // Used to match key downs and key ups 784 private boolean mGotKeyDown; 785 786 /* package */ static boolean mLogEvent = true; 787 788 // for event log 789 private long mLastTouchUpTime = 0; 790 791 /** 792 * URI scheme for telephone number 793 */ 794 public static final String SCHEME_TEL = "tel:"; 795 /** 796 * URI scheme for email address 797 */ 798 public static final String SCHEME_MAILTO = "mailto:"; 799 /** 800 * URI scheme for map address 801 */ 802 public static final String SCHEME_GEO = "geo:0,0?q="; 803 804 private int mBackgroundColor = Color.WHITE; 805 806 // Used to notify listeners of a new picture. 807 private PictureListener mPictureListener; 808 /** 809 * Interface to listen for new pictures as they change. 810 */ 811 public interface PictureListener { 812 /** 813 * Notify the listener that the picture has changed. 814 * @param view The WebView that owns the picture. 815 * @param picture The new picture. 816 */ 817 public void onNewPicture(WebView view, Picture picture); 818 } 819 820 // FIXME: Want to make this public, but need to change the API file. 821 public /*static*/ class HitTestResult { 822 /** 823 * Default HitTestResult, where the target is unknown 824 */ 825 public static final int UNKNOWN_TYPE = 0; 826 /** 827 * HitTestResult for hitting a HTML::a tag 828 */ 829 public static final int ANCHOR_TYPE = 1; 830 /** 831 * HitTestResult for hitting a phone number 832 */ 833 public static final int PHONE_TYPE = 2; 834 /** 835 * HitTestResult for hitting a map address 836 */ 837 public static final int GEO_TYPE = 3; 838 /** 839 * HitTestResult for hitting an email address 840 */ 841 public static final int EMAIL_TYPE = 4; 842 /** 843 * HitTestResult for hitting an HTML::img tag 844 */ 845 public static final int IMAGE_TYPE = 5; 846 /** 847 * HitTestResult for hitting a HTML::a tag which contains HTML::img 848 */ 849 public static final int IMAGE_ANCHOR_TYPE = 6; 850 /** 851 * HitTestResult for hitting a HTML::a tag with src=http 852 */ 853 public static final int SRC_ANCHOR_TYPE = 7; 854 /** 855 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 856 */ 857 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 858 /** 859 * HitTestResult for hitting an edit text area 860 */ 861 public static final int EDIT_TEXT_TYPE = 9; 862 863 private int mType; 864 private String mExtra; 865 866 HitTestResult() { 867 mType = UNKNOWN_TYPE; 868 } 869 870 private void setType(int type) { 871 mType = type; 872 } 873 874 private void setExtra(String extra) { 875 mExtra = extra; 876 } 877 878 public int getType() { 879 return mType; 880 } 881 882 public String getExtra() { 883 return mExtra; 884 } 885 } 886 887 // The View containing the zoom controls 888 private ExtendedZoomControls mZoomControls; 889 private Runnable mZoomControlRunnable; 890 891 // mZoomButtonsController will be lazy initialized in 892 // getZoomButtonsController() to get better performance. 893 private ZoomButtonsController mZoomButtonsController; 894 895 // These keep track of the center point of the zoom. They are used to 896 // determine the point around which we should zoom. 897 private float mZoomCenterX; 898 private float mZoomCenterY; 899 900 private ZoomButtonsController.OnZoomListener mZoomListener = 901 new ZoomButtonsController.OnZoomListener() { 902 903 public void onVisibilityChanged(boolean visible) { 904 if (visible) { 905 switchOutDrawHistory(); 906 // Bring back the hidden zoom controls. 907 mZoomButtonsController.getZoomControls().setVisibility( 908 View.VISIBLE); 909 updateZoomButtonsEnabled(); 910 } 911 } 912 913 public void onZoom(boolean zoomIn) { 914 if (zoomIn) { 915 zoomIn(); 916 } else { 917 zoomOut(); 918 } 919 920 updateZoomButtonsEnabled(); 921 } 922 }; 923 924 /** 925 * Construct a new WebView with a Context object. 926 * @param context A Context object used to access application assets. 927 */ 928 public WebView(Context context) { 929 this(context, null); 930 } 931 932 /** 933 * Construct a new WebView with layout parameters. 934 * @param context A Context object used to access application assets. 935 * @param attrs An AttributeSet passed to our parent. 936 */ 937 public WebView(Context context, AttributeSet attrs) { 938 this(context, attrs, com.android.internal.R.attr.webViewStyle); 939 } 940 941 /** 942 * Construct a new WebView with layout parameters and a default style. 943 * @param context A Context object used to access application assets. 944 * @param attrs An AttributeSet passed to our parent. 945 * @param defStyle The default style resource ID. 946 */ 947 public WebView(Context context, AttributeSet attrs, int defStyle) { 948 this(context, attrs, defStyle, null); 949 } 950 951 /** 952 * Construct a new WebView with layout parameters, a default style and a set 953 * of custom Javscript interfaces to be added to the WebView at initialization 954 * time. This guarantees that these interfaces will be available when the JS 955 * context is initialized. 956 * @param context A Context object used to access application assets. 957 * @param attrs An AttributeSet passed to our parent. 958 * @param defStyle The default style resource ID. 959 * @param javascriptInterfaces is a Map of intareface names, as keys, and 960 * object implementing those interfaces, as values. 961 * @hide pending API council approval. 962 */ 963 protected WebView(Context context, AttributeSet attrs, int defStyle, 964 Map<String, Object> javascriptInterfaces) { 965 super(context, attrs, defStyle); 966 init(); 967 968 mCallbackProxy = new CallbackProxy(context, this); 969 mViewManager = new ViewManager(this); 970 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 971 mDatabase = WebViewDatabase.getInstance(context); 972 mScroller = new OverScroller(context); 973 974 updateMultiTouchSupport(context); 975 } 976 977 void updateMultiTouchSupport(Context context) { 978 WebSettings settings = getSettings(); 979 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 980 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 981 && settings.supportZoom() && settings.getBuiltInZoomControls(); 982 if (mSupportMultiTouch && (mScaleDetector == null)) { 983 mScaleDetector = new ScaleGestureDetector(context, 984 new ScaleDetectorListener()); 985 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 986 mScaleDetector = null; 987 } 988 } 989 990 private void updateZoomButtonsEnabled() { 991 if (mZoomButtonsController == null) return; 992 boolean canZoomIn = mActualScale < mMaxZoomScale; 993 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 994 if (!canZoomIn && !canZoomOut) { 995 // Hide the zoom in and out buttons, as well as the fit to page 996 // button, if the page cannot zoom 997 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 998 } else { 999 // Set each one individually, as a page may be able to zoom in 1000 // or out. 1001 mZoomButtonsController.setZoomInEnabled(canZoomIn); 1002 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 1003 } 1004 } 1005 1006 private void init() { 1007 setWillNotDraw(false); 1008 setFocusable(true); 1009 setFocusableInTouchMode(true); 1010 setClickable(true); 1011 setLongClickable(true); 1012 1013 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1014 int slop = configuration.getScaledTouchSlop(); 1015 mTouchSlopSquare = slop * slop; 1016 mMinLockSnapReverseDistance = slop; 1017 slop = configuration.getScaledDoubleTapSlop(); 1018 mDoubleTapSlopSquare = slop * slop; 1019 final float density = getContext().getResources().getDisplayMetrics().density; 1020 // use one line height, 16 based on our current default font, for how 1021 // far we allow a touch be away from the edge of a link 1022 mNavSlop = (int) (16 * density); 1023 // density adjusted scale factors 1024 DEFAULT_SCALE_PERCENT = (int) (100 * density); 1025 mDefaultScale = density; 1026 mActualScale = density; 1027 mInvActualScale = 1 / density; 1028 mTextWrapScale = density; 1029 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 1030 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 1031 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 1032 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 1033 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1034 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1035 mOverflingDistance = configuration.getScaledOverflingDistance(); 1036 } 1037 1038 @Override 1039 public void setOverscrollMode(int mode) { 1040 super.setOverscrollMode(mode); 1041 if (mode != OVERSCROLL_NEVER) { 1042 if (mEdgeGlowTop == null) { 1043 final Resources res = getContext().getResources(); 1044 final Drawable edge = res.getDrawable(R.drawable.overscroll_edge); 1045 final Drawable glow = res.getDrawable(R.drawable.overscroll_glow); 1046 mEdgeGlowTop = new EdgeGlow(edge, glow); 1047 mEdgeGlowBottom = new EdgeGlow(edge, glow); 1048 mEdgeGlowLeft = new EdgeGlow(edge, glow); 1049 mEdgeGlowRight = new EdgeGlow(edge, glow); 1050 } 1051 } else { 1052 mEdgeGlowTop = null; 1053 mEdgeGlowBottom = null; 1054 mEdgeGlowLeft = null; 1055 mEdgeGlowRight = null; 1056 } 1057 } 1058 1059 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1060 final float density = getContext().getResources().getDisplayMetrics().density 1061 * 100 / zoomDensity; 1062 if (Math.abs(density - mDefaultScale) > 0.01) { 1063 float scaleFactor = density / mDefaultScale; 1064 // adjust the limits 1065 mNavSlop = (int) (16 * density); 1066 DEFAULT_SCALE_PERCENT = (int) (100 * density); 1067 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 1068 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 1069 mDefaultScale = density; 1070 mMaxZoomScale *= scaleFactor; 1071 mMinZoomScale *= scaleFactor; 1072 setNewZoomScale(mActualScale * scaleFactor, true, false); 1073 } 1074 } 1075 1076 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1077 String password, final Message resumeMsg) { 1078 boolean rVal = false; 1079 if (resumeMsg == null) { 1080 // null resumeMsg implies saving password silently 1081 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1082 } else { 1083 final Message remember = mPrivateHandler.obtainMessage( 1084 REMEMBER_PASSWORD); 1085 remember.getData().putString("host", schemePlusHost); 1086 remember.getData().putString("username", username); 1087 remember.getData().putString("password", password); 1088 remember.obj = resumeMsg; 1089 1090 final Message neverRemember = mPrivateHandler.obtainMessage( 1091 NEVER_REMEMBER_PASSWORD); 1092 neverRemember.getData().putString("host", schemePlusHost); 1093 neverRemember.getData().putString("username", username); 1094 neverRemember.getData().putString("password", password); 1095 neverRemember.obj = resumeMsg; 1096 1097 new AlertDialog.Builder(getContext()) 1098 .setTitle(com.android.internal.R.string.save_password_label) 1099 .setMessage(com.android.internal.R.string.save_password_message) 1100 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1101 new DialogInterface.OnClickListener() { 1102 public void onClick(DialogInterface dialog, int which) { 1103 resumeMsg.sendToTarget(); 1104 } 1105 }) 1106 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1107 new DialogInterface.OnClickListener() { 1108 public void onClick(DialogInterface dialog, int which) { 1109 remember.sendToTarget(); 1110 } 1111 }) 1112 .setNegativeButton(com.android.internal.R.string.save_password_never, 1113 new DialogInterface.OnClickListener() { 1114 public void onClick(DialogInterface dialog, int which) { 1115 neverRemember.sendToTarget(); 1116 } 1117 }) 1118 .setOnCancelListener(new OnCancelListener() { 1119 public void onCancel(DialogInterface dialog) { 1120 resumeMsg.sendToTarget(); 1121 } 1122 }).show(); 1123 // Return true so that WebViewCore will pause while the dialog is 1124 // up. 1125 rVal = true; 1126 } 1127 return rVal; 1128 } 1129 1130 @Override 1131 public void setScrollBarStyle(int style) { 1132 if (style == View.SCROLLBARS_INSIDE_INSET 1133 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1134 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1135 } else { 1136 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1137 } 1138 super.setScrollBarStyle(style); 1139 } 1140 1141 /** 1142 * Specify whether the horizontal scrollbar has overlay style. 1143 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1144 */ 1145 public void setHorizontalScrollbarOverlay(boolean overlay) { 1146 mOverlayHorizontalScrollbar = overlay; 1147 } 1148 1149 /** 1150 * Specify whether the vertical scrollbar has overlay style. 1151 * @param overlay TRUE if vertical scrollbar should have overlay style. 1152 */ 1153 public void setVerticalScrollbarOverlay(boolean overlay) { 1154 mOverlayVerticalScrollbar = overlay; 1155 } 1156 1157 /** 1158 * Return whether horizontal scrollbar has overlay style 1159 * @return TRUE if horizontal scrollbar has overlay style. 1160 */ 1161 public boolean overlayHorizontalScrollbar() { 1162 return mOverlayHorizontalScrollbar; 1163 } 1164 1165 /** 1166 * Return whether vertical scrollbar has overlay style 1167 * @return TRUE if vertical scrollbar has overlay style. 1168 */ 1169 public boolean overlayVerticalScrollbar() { 1170 return mOverlayVerticalScrollbar; 1171 } 1172 1173 /* 1174 * Return the width of the view where the content of WebView should render 1175 * to. 1176 * Note: this can be called from WebCoreThread. 1177 */ 1178 /* package */ int getViewWidth() { 1179 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1180 return getWidth(); 1181 } else { 1182 return getWidth() - getVerticalScrollbarWidth(); 1183 } 1184 } 1185 1186 /* 1187 * returns the height of the titlebarview (if any). Does not care about 1188 * scrolling 1189 */ 1190 private int getTitleHeight() { 1191 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1192 } 1193 1194 /* 1195 * Return the amount of the titlebarview (if any) that is visible 1196 */ 1197 private int getVisibleTitleHeight() { 1198 // need to restrict mScrollY due to over scroll 1199 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1200 } 1201 1202 /* 1203 * Return the height of the view where the content of WebView should render 1204 * to. Note that this excludes mTitleBar, if there is one. 1205 * Note: this can be called from WebCoreThread. 1206 */ 1207 /* package */ int getViewHeight() { 1208 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1209 } 1210 1211 private int getViewHeightWithTitle() { 1212 int height = getHeight(); 1213 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1214 height -= getHorizontalScrollbarHeight(); 1215 } 1216 return height; 1217 } 1218 1219 /** 1220 * @return The SSL certificate for the main top-level page or null if 1221 * there is no certificate (the site is not secure). 1222 */ 1223 public SslCertificate getCertificate() { 1224 return mCertificate; 1225 } 1226 1227 /** 1228 * Sets the SSL certificate for the main top-level page. 1229 */ 1230 public void setCertificate(SslCertificate certificate) { 1231 if (DebugFlags.WEB_VIEW) { 1232 Log.v(LOGTAG, "setCertificate=" + certificate); 1233 } 1234 // here, the certificate can be null (if the site is not secure) 1235 mCertificate = certificate; 1236 } 1237 1238 //------------------------------------------------------------------------- 1239 // Methods called by activity 1240 //------------------------------------------------------------------------- 1241 1242 /** 1243 * Save the username and password for a particular host in the WebView's 1244 * internal database. 1245 * @param host The host that required the credentials. 1246 * @param username The username for the given host. 1247 * @param password The password for the given host. 1248 */ 1249 public void savePassword(String host, String username, String password) { 1250 mDatabase.setUsernamePassword(host, username, password); 1251 } 1252 1253 /** 1254 * Set the HTTP authentication credentials for a given host and realm. 1255 * 1256 * @param host The host for the credentials. 1257 * @param realm The realm for the credentials. 1258 * @param username The username for the password. If it is null, it means 1259 * password can't be saved. 1260 * @param password The password 1261 */ 1262 public void setHttpAuthUsernamePassword(String host, String realm, 1263 String username, String password) { 1264 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1265 } 1266 1267 /** 1268 * Retrieve the HTTP authentication username and password for a given 1269 * host & realm pair 1270 * 1271 * @param host The host for which the credentials apply. 1272 * @param realm The realm for which the credentials apply. 1273 * @return String[] if found, String[0] is username, which can be null and 1274 * String[1] is password. Return null if it can't find anything. 1275 */ 1276 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1277 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1278 } 1279 1280 /** 1281 * Destroy the internal state of the WebView. This method should be called 1282 * after the WebView has been removed from the view system. No other 1283 * methods may be called on a WebView after destroy. 1284 */ 1285 public void destroy() { 1286 clearTextEntry(false); 1287 if (mWebViewCore != null) { 1288 // Set the handlers to null before destroying WebViewCore so no 1289 // more messages will be posted. 1290 mCallbackProxy.setWebViewClient(null); 1291 mCallbackProxy.setWebChromeClient(null); 1292 // Tell WebViewCore to destroy itself 1293 synchronized (this) { 1294 WebViewCore webViewCore = mWebViewCore; 1295 mWebViewCore = null; // prevent using partial webViewCore 1296 webViewCore.destroy(); 1297 } 1298 // Remove any pending messages that might not be serviced yet. 1299 mPrivateHandler.removeCallbacksAndMessages(null); 1300 mCallbackProxy.removeCallbacksAndMessages(null); 1301 // Wake up the WebCore thread just in case it is waiting for a 1302 // javascript dialog. 1303 synchronized (mCallbackProxy) { 1304 mCallbackProxy.notify(); 1305 } 1306 } 1307 if (mNativeClass != 0) { 1308 nativeDestroy(); 1309 mNativeClass = 0; 1310 } 1311 } 1312 1313 /** 1314 * Enables platform notifications of data state and proxy changes. 1315 */ 1316 public static void enablePlatformNotifications() { 1317 Network.enablePlatformNotifications(); 1318 } 1319 1320 /** 1321 * If platform notifications are enabled, this should be called 1322 * from the Activity's onPause() or onStop(). 1323 */ 1324 public static void disablePlatformNotifications() { 1325 Network.disablePlatformNotifications(); 1326 } 1327 1328 /** 1329 * Sets JavaScript engine flags. 1330 * 1331 * @param flags JS engine flags in a String 1332 * 1333 * @hide pending API solidification 1334 */ 1335 public void setJsFlags(String flags) { 1336 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1337 } 1338 1339 /** 1340 * Inform WebView of the network state. This is used to set 1341 * the javascript property window.navigator.isOnline and 1342 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1343 * @param networkUp boolean indicating if network is available 1344 */ 1345 public void setNetworkAvailable(boolean networkUp) { 1346 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1347 networkUp ? 1 : 0, 0); 1348 } 1349 1350 /** 1351 * Inform WebView about the current network type. 1352 * {@hide} 1353 */ 1354 public void setNetworkType(String type, String subtype) { 1355 Map<String, String> map = new HashMap<String, String>(); 1356 map.put("type", type); 1357 map.put("subtype", subtype); 1358 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1359 } 1360 /** 1361 * Save the state of this WebView used in 1362 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1363 * method no longer stores the display data for this WebView. The previous 1364 * behavior could potentially leak files if {@link #restoreState} was never 1365 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1366 * and restoring the display data. 1367 * @param outState The Bundle to store the WebView state. 1368 * @return The same copy of the back/forward list used to save the state. If 1369 * saveState fails, the returned list will be null. 1370 * @see #savePicture 1371 * @see #restorePicture 1372 */ 1373 public WebBackForwardList saveState(Bundle outState) { 1374 if (outState == null) { 1375 return null; 1376 } 1377 // We grab a copy of the back/forward list because a client of WebView 1378 // may have invalidated the history list by calling clearHistory. 1379 WebBackForwardList list = copyBackForwardList(); 1380 final int currentIndex = list.getCurrentIndex(); 1381 final int size = list.getSize(); 1382 // We should fail saving the state if the list is empty or the index is 1383 // not in a valid range. 1384 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1385 return null; 1386 } 1387 outState.putInt("index", currentIndex); 1388 // FIXME: This should just be a byte[][] instead of ArrayList but 1389 // Parcel.java does not have the code to handle multi-dimensional 1390 // arrays. 1391 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1392 for (int i = 0; i < size; i++) { 1393 WebHistoryItem item = list.getItemAtIndex(i); 1394 if (null == item) { 1395 // FIXME: this shouldn't happen 1396 // need to determine how item got set to null 1397 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1398 return null; 1399 } 1400 byte[] data = item.getFlattenedData(); 1401 if (data == null) { 1402 // It would be very odd to not have any data for a given history 1403 // item. And we will fail to rebuild the history list without 1404 // flattened data. 1405 return null; 1406 } 1407 history.add(data); 1408 } 1409 outState.putSerializable("history", history); 1410 if (mCertificate != null) { 1411 outState.putBundle("certificate", 1412 SslCertificate.saveState(mCertificate)); 1413 } 1414 return list; 1415 } 1416 1417 /** 1418 * Save the current display data to the Bundle given. Used in conjunction 1419 * with {@link #saveState}. 1420 * @param b A Bundle to store the display data. 1421 * @param dest The file to store the serialized picture data. Will be 1422 * overwritten with this WebView's picture data. 1423 * @return True if the picture was successfully saved. 1424 */ 1425 public boolean savePicture(Bundle b, final File dest) { 1426 if (dest == null || b == null) { 1427 return false; 1428 } 1429 final Picture p = capturePicture(); 1430 // Use a temporary file while writing to ensure the destination file 1431 // contains valid data. 1432 final File temp = new File(dest.getPath() + ".writing"); 1433 new Thread(new Runnable() { 1434 public void run() { 1435 FileOutputStream out = null; 1436 try { 1437 out = new FileOutputStream(temp); 1438 p.writeToStream(out); 1439 // Writing the picture succeeded, rename the temporary file 1440 // to the destination. 1441 temp.renameTo(dest); 1442 } catch (Exception e) { 1443 // too late to do anything about it. 1444 } finally { 1445 if (out != null) { 1446 try { 1447 out.close(); 1448 } catch (Exception e) { 1449 // Can't do anything about that 1450 } 1451 } 1452 temp.delete(); 1453 } 1454 } 1455 }).start(); 1456 // now update the bundle 1457 b.putInt("scrollX", mScrollX); 1458 b.putInt("scrollY", mScrollY); 1459 b.putFloat("scale", mActualScale); 1460 b.putFloat("textwrapScale", mTextWrapScale); 1461 b.putBoolean("overview", mInZoomOverview); 1462 return true; 1463 } 1464 1465 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1466 int sx = b.getInt("scrollX", 0); 1467 int sy = b.getInt("scrollY", 0); 1468 float scale = b.getFloat("scale", 1.0f); 1469 mDrawHistory = true; 1470 mHistoryPicture = p; 1471 mScrollX = sx; 1472 mScrollY = sy; 1473 mHistoryWidth = Math.round(p.getWidth() * scale); 1474 mHistoryHeight = Math.round(p.getHeight() * scale); 1475 // as getWidth() / getHeight() of the view are not available yet, set up 1476 // mActualScale, so that when onSizeChanged() is called, the rest will 1477 // be set correctly 1478 mActualScale = scale; 1479 mInvActualScale = 1 / scale; 1480 mTextWrapScale = b.getFloat("textwrapScale", scale); 1481 mInZoomOverview = b.getBoolean("overview"); 1482 invalidate(); 1483 } 1484 1485 /** 1486 * Restore the display data that was save in {@link #savePicture}. Used in 1487 * conjunction with {@link #restoreState}. 1488 * @param b A Bundle containing the saved display data. 1489 * @param src The file where the picture data was stored. 1490 * @return True if the picture was successfully restored. 1491 */ 1492 public boolean restorePicture(Bundle b, File src) { 1493 if (src == null || b == null) { 1494 return false; 1495 } 1496 if (!src.exists()) { 1497 return false; 1498 } 1499 try { 1500 final FileInputStream in = new FileInputStream(src); 1501 final Bundle copy = new Bundle(b); 1502 new Thread(new Runnable() { 1503 public void run() { 1504 try { 1505 final Picture p = Picture.createFromStream(in); 1506 if (p != null) { 1507 // Post a runnable on the main thread to update the 1508 // history picture fields. 1509 mPrivateHandler.post(new Runnable() { 1510 public void run() { 1511 restoreHistoryPictureFields(p, copy); 1512 } 1513 }); 1514 } 1515 } finally { 1516 try { 1517 in.close(); 1518 } catch (Exception e) { 1519 // Nothing we can do now. 1520 } 1521 } 1522 } 1523 }).start(); 1524 } catch (FileNotFoundException e){ 1525 e.printStackTrace(); 1526 } 1527 return true; 1528 } 1529 1530 /** 1531 * Restore the state of this WebView from the given map used in 1532 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1533 * be called to restore the state of the WebView before using the object. If 1534 * it is called after the WebView has had a chance to build state (load 1535 * pages, create a back/forward list, etc.) there may be undesirable 1536 * side-effects. Please note that this method no longer restores the 1537 * display data for this WebView. See {@link #savePicture} and {@link 1538 * #restorePicture} for saving and restoring the display data. 1539 * @param inState The incoming Bundle of state. 1540 * @return The restored back/forward list or null if restoreState failed. 1541 * @see #savePicture 1542 * @see #restorePicture 1543 */ 1544 public WebBackForwardList restoreState(Bundle inState) { 1545 WebBackForwardList returnList = null; 1546 if (inState == null) { 1547 return returnList; 1548 } 1549 if (inState.containsKey("index") && inState.containsKey("history")) { 1550 mCertificate = SslCertificate.restoreState( 1551 inState.getBundle("certificate")); 1552 1553 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1554 final int index = inState.getInt("index"); 1555 // We can't use a clone of the list because we need to modify the 1556 // shared copy, so synchronize instead to prevent concurrent 1557 // modifications. 1558 synchronized (list) { 1559 final List<byte[]> history = 1560 (List<byte[]>) inState.getSerializable("history"); 1561 final int size = history.size(); 1562 // Check the index bounds so we don't crash in native code while 1563 // restoring the history index. 1564 if (index < 0 || index >= size) { 1565 return null; 1566 } 1567 for (int i = 0; i < size; i++) { 1568 byte[] data = history.remove(0); 1569 if (data == null) { 1570 // If we somehow have null data, we cannot reconstruct 1571 // the item and thus our history list cannot be rebuilt. 1572 return null; 1573 } 1574 WebHistoryItem item = new WebHistoryItem(data); 1575 list.addHistoryItem(item); 1576 } 1577 // Grab the most recent copy to return to the caller. 1578 returnList = copyBackForwardList(); 1579 // Update the copy to have the correct index. 1580 returnList.setCurrentIndex(index); 1581 } 1582 // Remove all pending messages because we are restoring previous 1583 // state. 1584 mWebViewCore.removeMessages(); 1585 // Send a restore state message. 1586 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1587 } 1588 return returnList; 1589 } 1590 1591 /** 1592 * Load the given url with the extra headers. 1593 * @param url The url of the resource to load. 1594 * @param extraHeaders The extra headers sent with this url. This should not 1595 * include the common headers like "user-agent". If it does, it 1596 * will be replaced by the intrinsic value of the WebView. 1597 */ 1598 public void loadUrl(String url, Map<String, String> extraHeaders) { 1599 switchOutDrawHistory(); 1600 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1601 arg.mUrl = url; 1602 arg.mExtraHeaders = extraHeaders; 1603 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1604 clearTextEntry(false); 1605 } 1606 1607 /** 1608 * Load the given url. 1609 * @param url The url of the resource to load. 1610 */ 1611 public void loadUrl(String url) { 1612 if (url == null) { 1613 return; 1614 } 1615 loadUrl(url, null); 1616 } 1617 1618 /** 1619 * Load the url with postData using "POST" method into the WebView. If url 1620 * is not a network url, it will be loaded with {link 1621 * {@link #loadUrl(String)} instead. 1622 * 1623 * @param url The url of the resource to load. 1624 * @param postData The data will be passed to "POST" request. 1625 */ 1626 public void postUrl(String url, byte[] postData) { 1627 if (URLUtil.isNetworkUrl(url)) { 1628 switchOutDrawHistory(); 1629 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1630 arg.mUrl = url; 1631 arg.mPostData = postData; 1632 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1633 clearTextEntry(false); 1634 } else { 1635 loadUrl(url); 1636 } 1637 } 1638 1639 /** 1640 * Load the given data into the WebView. This will load the data into 1641 * WebView using the data: scheme. Content loaded through this mechanism 1642 * does not have the ability to load content from the network. 1643 * @param data A String of data in the given encoding. The date must 1644 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1645 * %27, %3f respectively. 1646 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1647 * @param encoding The encoding of the data. i.e. utf-8, base64 1648 */ 1649 public void loadData(String data, String mimeType, String encoding) { 1650 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1651 } 1652 1653 /** 1654 * Load the given data into the WebView, use the provided URL as the base 1655 * URL for the content. The base URL is the URL that represents the page 1656 * that is loaded through this interface. As such, it is used to resolve any 1657 * relative URLs. The historyUrl is used for the history entry. 1658 * <p> 1659 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1660 * files through "file:///android_asset/" for the sub resources is more 1661 * restricted. If you provide null or empty string as baseUrl, you won't be 1662 * able to access asset files. If the baseUrl is anything other than 1663 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1664 * sub resources. 1665 * 1666 * @param baseUrl Url to resolve relative paths with, if null defaults to 1667 * "about:blank" 1668 * @param data A String of data in the given encoding. 1669 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1670 * defaults to "text/html" 1671 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1672 * @param historyUrl URL to use as the history entry. Can be null. 1673 */ 1674 public void loadDataWithBaseURL(String baseUrl, String data, 1675 String mimeType, String encoding, String historyUrl) { 1676 1677 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1678 loadData(data, mimeType, encoding); 1679 return; 1680 } 1681 switchOutDrawHistory(); 1682 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1683 arg.mBaseUrl = baseUrl; 1684 arg.mData = data; 1685 arg.mMimeType = mimeType; 1686 arg.mEncoding = encoding; 1687 arg.mHistoryUrl = historyUrl; 1688 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1689 clearTextEntry(false); 1690 } 1691 1692 /** 1693 * Stop the current load. 1694 */ 1695 public void stopLoading() { 1696 // TODO: should we clear all the messages in the queue before sending 1697 // STOP_LOADING? 1698 switchOutDrawHistory(); 1699 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1700 } 1701 1702 /** 1703 * Reload the current url. 1704 */ 1705 public void reload() { 1706 clearTextEntry(false); 1707 switchOutDrawHistory(); 1708 mWebViewCore.sendMessage(EventHub.RELOAD); 1709 } 1710 1711 /** 1712 * Return true if this WebView has a back history item. 1713 * @return True iff this WebView has a back history item. 1714 */ 1715 public boolean canGoBack() { 1716 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1717 synchronized (l) { 1718 if (l.getClearPending()) { 1719 return false; 1720 } else { 1721 return l.getCurrentIndex() > 0; 1722 } 1723 } 1724 } 1725 1726 /** 1727 * Go back in the history of this WebView. 1728 */ 1729 public void goBack() { 1730 goBackOrForward(-1); 1731 } 1732 1733 /** 1734 * Return true if this WebView has a forward history item. 1735 * @return True iff this Webview has a forward history item. 1736 */ 1737 public boolean canGoForward() { 1738 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1739 synchronized (l) { 1740 if (l.getClearPending()) { 1741 return false; 1742 } else { 1743 return l.getCurrentIndex() < l.getSize() - 1; 1744 } 1745 } 1746 } 1747 1748 /** 1749 * Go forward in the history of this WebView. 1750 */ 1751 public void goForward() { 1752 goBackOrForward(1); 1753 } 1754 1755 /** 1756 * Return true if the page can go back or forward the given 1757 * number of steps. 1758 * @param steps The negative or positive number of steps to move the 1759 * history. 1760 */ 1761 public boolean canGoBackOrForward(int steps) { 1762 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1763 synchronized (l) { 1764 if (l.getClearPending()) { 1765 return false; 1766 } else { 1767 int newIndex = l.getCurrentIndex() + steps; 1768 return newIndex >= 0 && newIndex < l.getSize(); 1769 } 1770 } 1771 } 1772 1773 /** 1774 * Go to the history item that is the number of steps away from 1775 * the current item. Steps is negative if backward and positive 1776 * if forward. 1777 * @param steps The number of steps to take back or forward in the back 1778 * forward list. 1779 */ 1780 public void goBackOrForward(int steps) { 1781 goBackOrForward(steps, false); 1782 } 1783 1784 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1785 if (steps != 0) { 1786 clearTextEntry(false); 1787 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1788 ignoreSnapshot ? 1 : 0); 1789 } 1790 } 1791 1792 private boolean extendScroll(int y) { 1793 int finalY = mScroller.getFinalY(); 1794 int newY = pinLocY(finalY + y); 1795 if (newY == finalY) return false; 1796 mScroller.setFinalY(newY); 1797 mScroller.extendDuration(computeDuration(0, y)); 1798 return true; 1799 } 1800 1801 /** 1802 * Scroll the contents of the view up by half the view size 1803 * @param top true to jump to the top of the page 1804 * @return true if the page was scrolled 1805 */ 1806 public boolean pageUp(boolean top) { 1807 if (mNativeClass == 0) { 1808 return false; 1809 } 1810 nativeClearCursor(); // start next trackball movement from page edge 1811 if (top) { 1812 // go to the top of the document 1813 return pinScrollTo(mScrollX, 0, true, 0); 1814 } 1815 // Page up 1816 int h = getHeight(); 1817 int y; 1818 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1819 y = -h + PAGE_SCROLL_OVERLAP; 1820 } else { 1821 y = -h / 2; 1822 } 1823 mUserScroll = true; 1824 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1825 : extendScroll(y); 1826 } 1827 1828 /** 1829 * Scroll the contents of the view down by half the page size 1830 * @param bottom true to jump to bottom of page 1831 * @return true if the page was scrolled 1832 */ 1833 public boolean pageDown(boolean bottom) { 1834 if (mNativeClass == 0) { 1835 return false; 1836 } 1837 nativeClearCursor(); // start next trackball movement from page edge 1838 if (bottom) { 1839 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 1840 } 1841 // Page down. 1842 int h = getHeight(); 1843 int y; 1844 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1845 y = h - PAGE_SCROLL_OVERLAP; 1846 } else { 1847 y = h / 2; 1848 } 1849 mUserScroll = true; 1850 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1851 : extendScroll(y); 1852 } 1853 1854 /** 1855 * Clear the view so that onDraw() will draw nothing but white background, 1856 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1857 */ 1858 public void clearView() { 1859 mContentWidth = 0; 1860 mContentHeight = 0; 1861 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1862 } 1863 1864 /** 1865 * Return a new picture that captures the current display of the webview. 1866 * This is a copy of the display, and will be unaffected if the webview 1867 * later loads a different URL. 1868 * 1869 * @return a picture containing the current contents of the view. Note this 1870 * picture is of the entire document, and is not restricted to the 1871 * bounds of the view. 1872 */ 1873 public Picture capturePicture() { 1874 if (null == mWebViewCore) return null; // check for out of memory tab 1875 return mWebViewCore.copyContentPicture(); 1876 } 1877 1878 /** 1879 * Return true if the browser is displaying a TextView for text input. 1880 */ 1881 private boolean inEditingMode() { 1882 return mWebTextView != null && mWebTextView.getParent() != null; 1883 } 1884 1885 /** 1886 * Remove the WebTextView. 1887 * @param disableFocusController If true, send a message to webkit 1888 * disabling the focus controller, so the caret stops blinking. 1889 */ 1890 private void clearTextEntry(boolean disableFocusController) { 1891 if (inEditingMode()) { 1892 mWebTextView.remove(); 1893 if (disableFocusController) { 1894 setFocusControllerInactive(); 1895 } 1896 } 1897 } 1898 1899 /** 1900 * Return the current scale of the WebView 1901 * @return The current scale. 1902 */ 1903 public float getScale() { 1904 return mActualScale; 1905 } 1906 1907 /** 1908 * Set the initial scale for the WebView. 0 means default. If 1909 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1910 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1911 * WebView starts will this value as initial scale. 1912 * 1913 * @param scaleInPercent The initial scale in percent. 1914 */ 1915 public void setInitialScale(int scaleInPercent) { 1916 mInitialScaleInPercent = scaleInPercent; 1917 } 1918 1919 /** 1920 * Invoke the graphical zoom picker widget for this WebView. This will 1921 * result in the zoom widget appearing on the screen to control the zoom 1922 * level of this WebView. 1923 */ 1924 public void invokeZoomPicker() { 1925 if (!getSettings().supportZoom()) { 1926 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1927 return; 1928 } 1929 clearTextEntry(false); 1930 if (getSettings().getBuiltInZoomControls()) { 1931 getZoomButtonsController().setVisible(true); 1932 } else { 1933 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1934 mPrivateHandler.postDelayed(mZoomControlRunnable, 1935 ZOOM_CONTROLS_TIMEOUT); 1936 } 1937 } 1938 1939 /** 1940 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1941 * is found and the anchor has a non-javascript url, the HitTestResult type 1942 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1943 * anchor does not have a url or if it is a javascript url, the type will 1944 * be UNKNOWN_TYPE and the url has to be retrieved through 1945 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1946 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1947 * the "extra" field. A type of 1948 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1949 * a child node. If a phone number is found, the HitTestResult type is set 1950 * to PHONE_TYPE and the phone number is set in the "extra" field of 1951 * HitTestResult. If a map address is found, the HitTestResult type is set 1952 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1953 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1954 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1955 * HitTestResult type is set to UNKNOWN_TYPE. 1956 */ 1957 public HitTestResult getHitTestResult() { 1958 if (mNativeClass == 0) { 1959 return null; 1960 } 1961 1962 HitTestResult result = new HitTestResult(); 1963 if (nativeHasCursorNode()) { 1964 if (nativeCursorIsTextInput()) { 1965 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1966 } else { 1967 String text = nativeCursorText(); 1968 if (text != null) { 1969 if (text.startsWith(SCHEME_TEL)) { 1970 result.setType(HitTestResult.PHONE_TYPE); 1971 result.setExtra(text.substring(SCHEME_TEL.length())); 1972 } else if (text.startsWith(SCHEME_MAILTO)) { 1973 result.setType(HitTestResult.EMAIL_TYPE); 1974 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1975 } else if (text.startsWith(SCHEME_GEO)) { 1976 result.setType(HitTestResult.GEO_TYPE); 1977 result.setExtra(URLDecoder.decode(text 1978 .substring(SCHEME_GEO.length()))); 1979 } else if (nativeCursorIsAnchor()) { 1980 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1981 result.setExtra(text); 1982 } 1983 } 1984 } 1985 } 1986 int type = result.getType(); 1987 if (type == HitTestResult.UNKNOWN_TYPE 1988 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1989 // Now check to see if it is an image. 1990 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1991 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1992 String text = nativeImageURI(contentX, contentY); 1993 if (text != null) { 1994 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1995 HitTestResult.IMAGE_TYPE : 1996 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1997 result.setExtra(text); 1998 } 1999 } 2000 return result; 2001 } 2002 2003 // Called by JNI when the DOM has changed the focus. Clear the focus so 2004 // that new keys will go to the newly focused field 2005 private void domChangedFocus() { 2006 if (inEditingMode()) { 2007 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2008 } 2009 } 2010 /** 2011 * Request the href of an anchor element due to getFocusNodePath returning 2012 * "href." If hrefMsg is null, this method returns immediately and does not 2013 * dispatch hrefMsg to its target. 2014 * 2015 * @param hrefMsg This message will be dispatched with the result of the 2016 * request as the data member with "url" as key. The result can 2017 * be null. 2018 */ 2019 // FIXME: API change required to change the name of this function. We now 2020 // look at the cursor node, and not the focus node. Also, what is 2021 // getFocusNodePath? 2022 public void requestFocusNodeHref(Message hrefMsg) { 2023 if (hrefMsg == null || mNativeClass == 0) { 2024 return; 2025 } 2026 if (nativeCursorIsAnchor()) { 2027 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2028 nativeCursorFramePointer(), nativeCursorNodePointer(), 2029 hrefMsg); 2030 } 2031 } 2032 2033 /** 2034 * Request the url of the image last touched by the user. msg will be sent 2035 * to its target with a String representing the url as its object. 2036 * 2037 * @param msg This message will be dispatched with the result of the request 2038 * as the data member with "url" as key. The result can be null. 2039 */ 2040 public void requestImageRef(Message msg) { 2041 if (0 == mNativeClass) return; // client isn't initialized 2042 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2043 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2044 String ref = nativeImageURI(contentX, contentY); 2045 Bundle data = msg.getData(); 2046 data.putString("url", ref); 2047 msg.setData(data); 2048 msg.sendToTarget(); 2049 } 2050 2051 private static int pinLoc(int x, int viewMax, int docMax) { 2052// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2053 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2054 // pin the short document to the top/left of the screen 2055 x = 0; 2056// Log.d(LOGTAG, "--- center " + x); 2057 } else if (x < 0) { 2058 x = 0; 2059// Log.d(LOGTAG, "--- zero"); 2060 } else if (x + viewMax > docMax) { 2061 x = docMax - viewMax; 2062// Log.d(LOGTAG, "--- pin " + x); 2063 } 2064 return x; 2065 } 2066 2067 // Expects x in view coordinates 2068 private int pinLocX(int x) { 2069 if (mInOverScrollMode) return x; 2070 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2071 } 2072 2073 // Expects y in view coordinates 2074 private int pinLocY(int y) { 2075 if (mInOverScrollMode) return y; 2076 return pinLoc(y, getViewHeightWithTitle(), 2077 computeRealVerticalScrollRange() + getTitleHeight()); 2078 } 2079 2080 /** 2081 * A title bar which is embedded in this WebView, and scrolls along with it 2082 * vertically, but not horizontally. 2083 */ 2084 private View mTitleBar; 2085 2086 /** 2087 * Since we draw the title bar ourselves, we removed the shadow from the 2088 * browser's activity. We do want a shadow at the bottom of the title bar, 2089 * or at the top of the screen if the title bar is not visible. This 2090 * drawable serves that purpose. 2091 */ 2092 private Drawable mTitleShadow; 2093 2094 /** 2095 * Add or remove a title bar to be embedded into the WebView, and scroll 2096 * along with it vertically, while remaining in view horizontally. Pass 2097 * null to remove the title bar from the WebView, and return to drawing 2098 * the WebView normally without translating to account for the title bar. 2099 * @hide 2100 */ 2101 public void setEmbeddedTitleBar(View v) { 2102 if (mTitleBar == v) return; 2103 if (mTitleBar != null) { 2104 removeView(mTitleBar); 2105 } 2106 if (null != v) { 2107 addView(v, new AbsoluteLayout.LayoutParams( 2108 ViewGroup.LayoutParams.MATCH_PARENT, 2109 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2110 if (mTitleShadow == null) { 2111 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 2112 com.android.internal.R.drawable.title_bar_shadow); 2113 } 2114 } 2115 mTitleBar = v; 2116 } 2117 2118 /** 2119 * Given a distance in view space, convert it to content space. Note: this 2120 * does not reflect translation, just scaling, so this should not be called 2121 * with coordinates, but should be called for dimensions like width or 2122 * height. 2123 */ 2124 private int viewToContentDimension(int d) { 2125 return Math.round(d * mInvActualScale); 2126 } 2127 2128 /** 2129 * Given an x coordinate in view space, convert it to content space. Also 2130 * may be used for absolute heights (such as for the WebTextView's 2131 * textSize, which is unaffected by the height of the title bar). 2132 */ 2133 /*package*/ int viewToContentX(int x) { 2134 return viewToContentDimension(x); 2135 } 2136 2137 /** 2138 * Given a y coordinate in view space, convert it to content space. 2139 * Takes into account the height of the title bar if there is one 2140 * embedded into the WebView. 2141 */ 2142 /*package*/ int viewToContentY(int y) { 2143 return viewToContentDimension(y - getTitleHeight()); 2144 } 2145 2146 /** 2147 * Given a x coordinate in view space, convert it to content space. 2148 * Returns the result as a float. 2149 */ 2150 private float viewToContentXf(int x) { 2151 return x * mInvActualScale; 2152 } 2153 2154 /** 2155 * Given a y coordinate in view space, convert it to content space. 2156 * Takes into account the height of the title bar if there is one 2157 * embedded into the WebView. Returns the result as a float. 2158 */ 2159 private float viewToContentYf(int y) { 2160 return (y - getTitleHeight()) * mInvActualScale; 2161 } 2162 2163 /** 2164 * Given a distance in content space, convert it to view space. Note: this 2165 * does not reflect translation, just scaling, so this should not be called 2166 * with coordinates, but should be called for dimensions like width or 2167 * height. 2168 */ 2169 /*package*/ int contentToViewDimension(int d) { 2170 return Math.round(d * mActualScale); 2171 } 2172 2173 /** 2174 * Given an x coordinate in content space, convert it to view 2175 * space. 2176 */ 2177 /*package*/ int contentToViewX(int x) { 2178 return contentToViewDimension(x); 2179 } 2180 2181 /** 2182 * Given a y coordinate in content space, convert it to view 2183 * space. Takes into account the height of the title bar. 2184 */ 2185 /*package*/ int contentToViewY(int y) { 2186 return contentToViewDimension(y) + getTitleHeight(); 2187 } 2188 2189 private Rect contentToViewRect(Rect x) { 2190 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2191 contentToViewX(x.right), contentToViewY(x.bottom)); 2192 } 2193 2194 /* To invalidate a rectangle in content coordinates, we need to transform 2195 the rect into view coordinates, so we can then call invalidate(...). 2196 2197 Normally, we would just call contentToView[XY](...), which eventually 2198 calls Math.round(coordinate * mActualScale). However, for invalidates, 2199 we need to account for the slop that occurs with antialiasing. To 2200 address that, we are a little more liberal in the size of the rect that 2201 we invalidate. 2202 2203 This liberal calculation calls floor() for the top/left, and ceil() for 2204 the bottom/right coordinates. This catches the possible extra pixels of 2205 antialiasing that we might have missed with just round(). 2206 */ 2207 2208 // Called by JNI to invalidate the View, given rectangle coordinates in 2209 // content space 2210 private void viewInvalidate(int l, int t, int r, int b) { 2211 final float scale = mActualScale; 2212 final int dy = getTitleHeight(); 2213 invalidate((int)Math.floor(l * scale), 2214 (int)Math.floor(t * scale) + dy, 2215 (int)Math.ceil(r * scale), 2216 (int)Math.ceil(b * scale) + dy); 2217 } 2218 2219 // Called by JNI to invalidate the View after a delay, given rectangle 2220 // coordinates in content space 2221 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2222 final float scale = mActualScale; 2223 final int dy = getTitleHeight(); 2224 postInvalidateDelayed(delay, 2225 (int)Math.floor(l * scale), 2226 (int)Math.floor(t * scale) + dy, 2227 (int)Math.ceil(r * scale), 2228 (int)Math.ceil(b * scale) + dy); 2229 } 2230 2231 private void invalidateContentRect(Rect r) { 2232 viewInvalidate(r.left, r.top, r.right, r.bottom); 2233 } 2234 2235 // stop the scroll animation, and don't let a subsequent fling add 2236 // to the existing velocity 2237 private void abortAnimation() { 2238 mScroller.abortAnimation(); 2239 mLastVelocity = 0; 2240 } 2241 2242 /* call from webcoreview.draw(), so we're still executing in the UI thread 2243 */ 2244 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2245 2246 // premature data from webkit, ignore 2247 if ((w | h) == 0) { 2248 return; 2249 } 2250 2251 // don't abort a scroll animation if we didn't change anything 2252 if (mContentWidth != w || mContentHeight != h) { 2253 // record new dimensions 2254 mContentWidth = w; 2255 mContentHeight = h; 2256 // If history Picture is drawn, don't update scroll. They will be 2257 // updated when we get out of that mode. 2258 if (!mDrawHistory) { 2259 // repin our scroll, taking into account the new content size 2260 int oldX = mScrollX; 2261 int oldY = mScrollY; 2262 mScrollX = pinLocX(mScrollX); 2263 mScrollY = pinLocY(mScrollY); 2264 if (oldX != mScrollX || oldY != mScrollY) { 2265 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2266 } 2267 if (!mScroller.isFinished()) { 2268 // We are in the middle of a scroll. Repin the final scroll 2269 // position. 2270 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2271 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2272 } 2273 } 2274 } 2275 contentSizeChanged(updateLayout); 2276 } 2277 2278 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2279 boolean force) { 2280 if (scale < mMinZoomScale) { 2281 scale = mMinZoomScale; 2282 // set mInZoomOverview for non mobile sites 2283 if (scale < mDefaultScale) mInZoomOverview = true; 2284 } else if (scale > mMaxZoomScale) { 2285 scale = mMaxZoomScale; 2286 } 2287 if (updateTextWrapScale) { 2288 mTextWrapScale = scale; 2289 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2290 mLastHeightSent = 0; 2291 } 2292 if (scale != mActualScale || force) { 2293 if (mDrawHistory) { 2294 // If history Picture is drawn, don't update scroll. They will 2295 // be updated when we get out of that mode. 2296 if (scale != mActualScale && !mPreviewZoomOnly) { 2297 mCallbackProxy.onScaleChanged(mActualScale, scale); 2298 } 2299 mActualScale = scale; 2300 mInvActualScale = 1 / scale; 2301 sendViewSizeZoom(); 2302 } else { 2303 // update our scroll so we don't appear to jump 2304 // i.e. keep the center of the doc in the center of the view 2305 2306 int oldX = mScrollX; 2307 int oldY = mScrollY; 2308 float ratio = scale * mInvActualScale; // old inverse 2309 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2310 float sy = ratio * oldY + (ratio - 1) 2311 * (mZoomCenterY - getTitleHeight()); 2312 2313 // now update our new scale and inverse 2314 if (scale != mActualScale && !mPreviewZoomOnly) { 2315 mCallbackProxy.onScaleChanged(mActualScale, scale); 2316 } 2317 mActualScale = scale; 2318 mInvActualScale = 1 / scale; 2319 2320 // Scale all the child views 2321 mViewManager.scaleAll(); 2322 2323 // as we don't have animation for scaling, don't do animation 2324 // for scrolling, as it causes weird intermediate state 2325 // pinScrollTo(Math.round(sx), Math.round(sy)); 2326 mScrollX = pinLocX(Math.round(sx)); 2327 mScrollY = pinLocY(Math.round(sy)); 2328 2329 // update webkit 2330 if (oldX != mScrollX || oldY != mScrollY) { 2331 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2332 } else { 2333 // the scroll position is adjusted at the beginning of the 2334 // zoom animation. But we want to update the WebKit at the 2335 // end of the zoom animation. See comments in onScaleEnd(). 2336 sendOurVisibleRect(); 2337 } 2338 sendViewSizeZoom(); 2339 } 2340 } 2341 } 2342 2343 // Used to avoid sending many visible rect messages. 2344 private Rect mLastVisibleRectSent; 2345 private Rect mLastGlobalRect; 2346 2347 private Rect sendOurVisibleRect() { 2348 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2349 2350 Rect rect = new Rect(); 2351 calcOurContentVisibleRect(rect); 2352 // Rect.equals() checks for null input. 2353 if (!rect.equals(mLastVisibleRectSent)) { 2354 Point pos = new Point(rect.left, rect.top); 2355 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2356 nativeMoveGeneration(), 0, pos); 2357 mLastVisibleRectSent = rect; 2358 } 2359 Rect globalRect = new Rect(); 2360 if (getGlobalVisibleRect(globalRect) 2361 && !globalRect.equals(mLastGlobalRect)) { 2362 if (DebugFlags.WEB_VIEW) { 2363 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2364 + globalRect.top + ",r=" + globalRect.right + ",b=" 2365 + globalRect.bottom); 2366 } 2367 // TODO: the global offset is only used by windowRect() 2368 // in ChromeClientAndroid ; other clients such as touch 2369 // and mouse events could return view + screen relative points. 2370 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2371 mLastGlobalRect = globalRect; 2372 } 2373 return rect; 2374 } 2375 2376 // Sets r to be the visible rectangle of our webview in view coordinates 2377 private void calcOurVisibleRect(Rect r) { 2378 Point p = new Point(); 2379 getGlobalVisibleRect(r, p); 2380 r.offset(-p.x, -p.y); 2381 if (mFindIsUp) { 2382 r.bottom -= mFindHeight; 2383 } 2384 } 2385 2386 // Sets r to be our visible rectangle in content coordinates 2387 private void calcOurContentVisibleRect(Rect r) { 2388 calcOurVisibleRect(r); 2389 // since we might overscroll, pin the rect to the bounds of the content 2390 r.left = Math.max(viewToContentX(r.left), 0); 2391 // viewToContentY will remove the total height of the title bar. Add 2392 // the visible height back in to account for the fact that if the title 2393 // bar is partially visible, the part of the visible rect which is 2394 // displaying our content is displaced by that amount. 2395 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2396 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2397 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2398 } 2399 2400 // Sets r to be our visible rectangle in content coordinates. We use this 2401 // method on the native side to compute the position of the fixed layers. 2402 // Uses floating coordinates (necessary to correctly place elements when 2403 // the scale factor is not 1) 2404 private void calcOurContentVisibleRectF(RectF r) { 2405 Rect ri = new Rect(0,0,0,0); 2406 calcOurVisibleRect(ri); 2407 // pin the rect to the bounds of the content 2408 r.left = Math.max(viewToContentXf(ri.left), 0.0f); 2409 // viewToContentY will remove the total height of the title bar. Add 2410 // the visible height back in to account for the fact that if the title 2411 // bar is partially visible, the part of the visible rect which is 2412 // displaying our content is displaced by that amount. 2413 r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f); 2414 r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth); 2415 r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight); 2416 } 2417 2418 static class ViewSizeData { 2419 int mWidth; 2420 int mHeight; 2421 int mTextWrapWidth; 2422 int mAnchorX; 2423 int mAnchorY; 2424 float mScale; 2425 boolean mIgnoreHeight; 2426 } 2427 2428 /** 2429 * Compute unzoomed width and height, and if they differ from the last 2430 * values we sent, send them to webkit (to be used has new viewport) 2431 * 2432 * @return true if new values were sent 2433 */ 2434 private boolean sendViewSizeZoom() { 2435 if (mPreviewZoomOnly) return false; 2436 2437 int viewWidth = getViewWidth(); 2438 int newWidth = Math.round(viewWidth * mInvActualScale); 2439 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2440 /* 2441 * Because the native side may have already done a layout before the 2442 * View system was able to measure us, we have to send a height of 0 to 2443 * remove excess whitespace when we grow our width. This will trigger a 2444 * layout and a change in content size. This content size change will 2445 * mean that contentSizeChanged will either call this method directly or 2446 * indirectly from onSizeChanged. 2447 */ 2448 if (newWidth > mLastWidthSent && mWrapContent) { 2449 newHeight = 0; 2450 } 2451 // Avoid sending another message if the dimensions have not changed. 2452 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2453 ViewSizeData data = new ViewSizeData(); 2454 data.mWidth = newWidth; 2455 data.mHeight = newHeight; 2456 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2457 data.mScale = mActualScale; 2458 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2459 data.mAnchorX = mAnchorX; 2460 data.mAnchorY = mAnchorY; 2461 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2462 mLastWidthSent = newWidth; 2463 mLastHeightSent = newHeight; 2464 mAnchorX = mAnchorY = 0; 2465 return true; 2466 } 2467 return false; 2468 } 2469 2470 private int computeRealHorizontalScrollRange() { 2471 if (mDrawHistory) { 2472 return mHistoryWidth; 2473 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2474 && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2475 // only honor the scrollbar mode when it is at minimum zoom level 2476 return computeHorizontalScrollExtent(); 2477 } else { 2478 // to avoid rounding error caused unnecessary scrollbar, use floor 2479 return (int) Math.floor(mContentWidth * mActualScale); 2480 } 2481 } 2482 2483 @Override 2484 protected int computeHorizontalScrollRange() { 2485 int range = computeRealHorizontalScrollRange(); 2486 2487 // Adjust reported range if overscrolled to compress the scroll bars 2488 final int scrollX = mScrollX; 2489 final int overscrollRight = computeMaxScrollX(); 2490 if (scrollX < 0) { 2491 range -= scrollX; 2492 } else if (scrollX > overscrollRight) { 2493 range += scrollX - overscrollRight; 2494 } 2495 2496 return range; 2497 } 2498 2499 @Override 2500 protected int computeHorizontalScrollOffset() { 2501 return Math.max(mScrollX, 0); 2502 } 2503 2504 private int computeRealVerticalScrollRange() { 2505 if (mDrawHistory) { 2506 return mHistoryHeight; 2507 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2508 && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2509 // only honor the scrollbar mode when it is at minimum zoom level 2510 return computeVerticalScrollExtent(); 2511 } else { 2512 // to avoid rounding error caused unnecessary scrollbar, use floor 2513 return (int) Math.floor(mContentHeight * mActualScale); 2514 } 2515 } 2516 2517 @Override 2518 protected int computeVerticalScrollRange() { 2519 int range = computeRealVerticalScrollRange(); 2520 2521 // Adjust reported range if overscrolled to compress the scroll bars 2522 final int scrollY = mScrollY; 2523 final int overscrollBottom = computeMaxScrollY(); 2524 if (scrollY < 0) { 2525 range -= scrollY; 2526 } else if (scrollY > overscrollBottom) { 2527 range += scrollY - overscrollBottom; 2528 } 2529 2530 return range; 2531 } 2532 2533 @Override 2534 protected int computeVerticalScrollOffset() { 2535 return Math.max(mScrollY - getTitleHeight(), 0); 2536 } 2537 2538 @Override 2539 protected int computeVerticalScrollExtent() { 2540 return getViewHeight(); 2541 } 2542 2543 /** @hide */ 2544 @Override 2545 protected void onDrawVerticalScrollBar(Canvas canvas, 2546 Drawable scrollBar, 2547 int l, int t, int r, int b) { 2548 if (mScrollY < 0) { 2549 t -= mScrollY; 2550 } 2551 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2552 scrollBar.draw(canvas); 2553 } 2554 2555 @Override 2556 protected void onOverscrolled(int scrollX, int scrollY, boolean clampedX, 2557 boolean clampedY) { 2558 mInOverScrollMode = false; 2559 int maxX = computeMaxScrollX(); 2560 if (maxX == 0) { 2561 // do not over scroll x if the page just fits the screen 2562 scrollX = pinLocX(scrollX); 2563 } else if (scrollX < 0 || scrollX > maxX) { 2564 mInOverScrollMode = true; 2565 } 2566 if (scrollY < 0 || scrollY > computeMaxScrollY()) { 2567 mInOverScrollMode = true; 2568 } 2569 2570 super.scrollTo(scrollX, scrollY); 2571 } 2572 2573 /** 2574 * Get the url for the current page. This is not always the same as the url 2575 * passed to WebViewClient.onPageStarted because although the load for 2576 * that url has begun, the current page may not have changed. 2577 * @return The url for the current page. 2578 */ 2579 public String getUrl() { 2580 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2581 return h != null ? h.getUrl() : null; 2582 } 2583 2584 /** 2585 * Get the original url for the current page. This is not always the same 2586 * as the url passed to WebViewClient.onPageStarted because although the 2587 * load for that url has begun, the current page may not have changed. 2588 * Also, there may have been redirects resulting in a different url to that 2589 * originally requested. 2590 * @return The url that was originally requested for the current page. 2591 */ 2592 public String getOriginalUrl() { 2593 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2594 return h != null ? h.getOriginalUrl() : null; 2595 } 2596 2597 /** 2598 * Get the title for the current page. This is the title of the current page 2599 * until WebViewClient.onReceivedTitle is called. 2600 * @return The title for the current page. 2601 */ 2602 public String getTitle() { 2603 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2604 return h != null ? h.getTitle() : null; 2605 } 2606 2607 /** 2608 * Get the favicon for the current page. This is the favicon of the current 2609 * page until WebViewClient.onReceivedIcon is called. 2610 * @return The favicon for the current page. 2611 */ 2612 public Bitmap getFavicon() { 2613 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2614 return h != null ? h.getFavicon() : null; 2615 } 2616 2617 /** 2618 * Get the touch icon url for the apple-touch-icon <link> element. 2619 * @hide 2620 */ 2621 public String getTouchIconUrl() { 2622 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2623 return h != null ? h.getTouchIconUrl() : null; 2624 } 2625 2626 /** 2627 * Get the progress for the current page. 2628 * @return The progress for the current page between 0 and 100. 2629 */ 2630 public int getProgress() { 2631 return mCallbackProxy.getProgress(); 2632 } 2633 2634 /** 2635 * @return the height of the HTML content. 2636 */ 2637 public int getContentHeight() { 2638 return mContentHeight; 2639 } 2640 2641 /** 2642 * @return the width of the HTML content. 2643 * @hide 2644 */ 2645 public int getContentWidth() { 2646 return mContentWidth; 2647 } 2648 2649 /** 2650 * Pause all layout, parsing, and javascript timers for all webviews. This 2651 * is a global requests, not restricted to just this webview. This can be 2652 * useful if the application has been paused. 2653 */ 2654 public void pauseTimers() { 2655 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2656 } 2657 2658 /** 2659 * Resume all layout, parsing, and javascript timers for all webviews. 2660 * This will resume dispatching all timers. 2661 */ 2662 public void resumeTimers() { 2663 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2664 } 2665 2666 /** 2667 * Call this to pause any extra processing associated with this view and 2668 * its associated DOM/plugins/javascript/etc. For example, if the view is 2669 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2670 * network traffic. When the view is again "active", call onResume(). 2671 * 2672 * Note that this differs from pauseTimers(), which affects all views/DOMs 2673 * @hide 2674 */ 2675 public void onPause() { 2676 if (!mIsPaused) { 2677 mIsPaused = true; 2678 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2679 } 2680 } 2681 2682 /** 2683 * Call this to balanace a previous call to onPause() 2684 * @hide 2685 */ 2686 public void onResume() { 2687 if (mIsPaused) { 2688 mIsPaused = false; 2689 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2690 } 2691 } 2692 2693 /** 2694 * Returns true if the view is paused, meaning onPause() was called. Calling 2695 * onResume() sets the paused state back to false. 2696 * @hide 2697 */ 2698 public boolean isPaused() { 2699 return mIsPaused; 2700 } 2701 2702 /** 2703 * Call this to inform the view that memory is low so that it can 2704 * free any available memory. 2705 */ 2706 public void freeMemory() { 2707 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2708 } 2709 2710 /** 2711 * Clear the resource cache. Note that the cache is per-application, so 2712 * this will clear the cache for all WebViews used. 2713 * 2714 * @param includeDiskFiles If false, only the RAM cache is cleared. 2715 */ 2716 public void clearCache(boolean includeDiskFiles) { 2717 // Note: this really needs to be a static method as it clears cache for all 2718 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2719 // we can't make this static. 2720 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2721 includeDiskFiles ? 1 : 0, 0); 2722 } 2723 2724 /** 2725 * Make sure that clearing the form data removes the adapter from the 2726 * currently focused textfield if there is one. 2727 */ 2728 public void clearFormData() { 2729 if (inEditingMode()) { 2730 AutoCompleteAdapter adapter = null; 2731 mWebTextView.setAdapterCustom(adapter); 2732 } 2733 } 2734 2735 /** 2736 * Tell the WebView to clear its internal back/forward list. 2737 */ 2738 public void clearHistory() { 2739 mCallbackProxy.getBackForwardList().setClearPending(); 2740 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2741 } 2742 2743 /** 2744 * Clear the SSL preferences table stored in response to proceeding with SSL 2745 * certificate errors. 2746 */ 2747 public void clearSslPreferences() { 2748 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2749 } 2750 2751 /** 2752 * Return the WebBackForwardList for this WebView. This contains the 2753 * back/forward list for use in querying each item in the history stack. 2754 * This is a copy of the private WebBackForwardList so it contains only a 2755 * snapshot of the current state. Multiple calls to this method may return 2756 * different objects. The object returned from this method will not be 2757 * updated to reflect any new state. 2758 */ 2759 public WebBackForwardList copyBackForwardList() { 2760 return mCallbackProxy.getBackForwardList().clone(); 2761 } 2762 2763 /* 2764 * Highlight and scroll to the next occurance of String in findAll. 2765 * Wraps the page infinitely, and scrolls. Must be called after 2766 * calling findAll. 2767 * 2768 * @param forward Direction to search. 2769 */ 2770 public void findNext(boolean forward) { 2771 if (0 == mNativeClass) return; // client isn't initialized 2772 nativeFindNext(forward); 2773 } 2774 2775 /* 2776 * Find all instances of find on the page and highlight them. 2777 * @param find String to find. 2778 * @return int The number of occurances of the String "find" 2779 * that were found. 2780 */ 2781 public int findAll(String find) { 2782 if (0 == mNativeClass) return 0; // client isn't initialized 2783 int result = find != null ? nativeFindAll(find.toLowerCase(), 2784 find.toUpperCase()) : 0; 2785 invalidate(); 2786 mLastFind = find; 2787 return result; 2788 } 2789 2790 /** 2791 * @hide 2792 */ 2793 public void setFindIsUp(boolean isUp) { 2794 mFindIsUp = isUp; 2795 if (isUp) { 2796 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2797 false); 2798 } 2799 if (0 == mNativeClass) return; // client isn't initialized 2800 nativeSetFindIsUp(isUp); 2801 } 2802 2803 /** 2804 * @hide 2805 */ 2806 public int findIndex() { 2807 if (0 == mNativeClass) return -1; 2808 return nativeFindIndex(); 2809 } 2810 2811 // Used to know whether the find dialog is open. Affects whether 2812 // or not we draw the highlights for matches. 2813 private boolean mFindIsUp; 2814 2815 private int mFindHeight; 2816 // Keep track of the last string sent, so we can search again after an 2817 // orientation change or the dismissal of the soft keyboard. 2818 private String mLastFind; 2819 2820 /** 2821 * Return the first substring consisting of the address of a physical 2822 * location. Currently, only addresses in the United States are detected, 2823 * and consist of: 2824 * - a house number 2825 * - a street name 2826 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2827 * - a city name 2828 * - a state or territory, either spelled out or two-letter abbr. 2829 * - an optional 5 digit or 9 digit zip code. 2830 * 2831 * All names must be correctly capitalized, and the zip code, if present, 2832 * must be valid for the state. The street type must be a standard USPS 2833 * spelling or abbreviation. The state or territory must also be spelled 2834 * or abbreviated using USPS standards. The house number may not exceed 2835 * five digits. 2836 * @param addr The string to search for addresses. 2837 * 2838 * @return the address, or if no address is found, return null. 2839 */ 2840 public static String findAddress(String addr) { 2841 return findAddress(addr, false); 2842 } 2843 2844 /** 2845 * @hide 2846 * Return the first substring consisting of the address of a physical 2847 * location. Currently, only addresses in the United States are detected, 2848 * and consist of: 2849 * - a house number 2850 * - a street name 2851 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2852 * - a city name 2853 * - a state or territory, either spelled out or two-letter abbr. 2854 * - an optional 5 digit or 9 digit zip code. 2855 * 2856 * Names are optionally capitalized, and the zip code, if present, 2857 * must be valid for the state. The street type must be a standard USPS 2858 * spelling or abbreviation. The state or territory must also be spelled 2859 * or abbreviated using USPS standards. The house number may not exceed 2860 * five digits. 2861 * @param addr The string to search for addresses. 2862 * @param caseInsensitive addr Set to true to make search ignore case. 2863 * 2864 * @return the address, or if no address is found, return null. 2865 */ 2866 public static String findAddress(String addr, boolean caseInsensitive) { 2867 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2868 } 2869 2870 /* 2871 * Clear the highlighting surrounding text matches created by findAll. 2872 */ 2873 public void clearMatches() { 2874 mLastFind = ""; 2875 if (mNativeClass == 0) 2876 return; 2877 nativeSetFindIsEmpty(); 2878 invalidate(); 2879 } 2880 2881 /** 2882 * @hide 2883 */ 2884 public void notifyFindDialogDismissed() { 2885 if (mWebViewCore == null) { 2886 return; 2887 } 2888 clearMatches(); 2889 setFindIsUp(false); 2890 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2891 false); 2892 // Now that the dialog has been removed, ensure that we scroll to a 2893 // location that is not beyond the end of the page. 2894 pinScrollTo(mScrollX, mScrollY, false, 0); 2895 invalidate(); 2896 } 2897 2898 /** 2899 * @hide 2900 */ 2901 public void setFindDialogHeight(int height) { 2902 if (DebugFlags.WEB_VIEW) { 2903 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2904 } 2905 mFindHeight = height; 2906 } 2907 2908 /** 2909 * Query the document to see if it contains any image references. The 2910 * message object will be dispatched with arg1 being set to 1 if images 2911 * were found and 0 if the document does not reference any images. 2912 * @param response The message that will be dispatched with the result. 2913 */ 2914 public void documentHasImages(Message response) { 2915 if (response == null) { 2916 return; 2917 } 2918 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2919 } 2920 2921 @Override 2922 public void computeScroll() { 2923 if (mScroller.computeScrollOffset()) { 2924 int oldX = mScrollX; 2925 int oldY = mScrollY; 2926 int x = mScroller.getCurrX(); 2927 int y = mScroller.getCurrY(); 2928 invalidate(); // So we draw again 2929 2930 if (oldX != x || oldY != y) { 2931 final int rangeX = computeMaxScrollX(); 2932 final int rangeY = computeMaxScrollY(); 2933 overscrollBy(x - oldX, y - oldY, oldX, oldY, 2934 rangeX, rangeY, 2935 mOverflingDistance, mOverflingDistance, false); 2936 2937 if (mEdgeGlowTop != null) { 2938 if (rangeY > 0 || getOverscrollMode() == OVERSCROLL_ALWAYS) { 2939 if (y < 0 && oldY >= 0) { 2940 mEdgeGlowTop.onAbsorb((int) mScroller.getCurrVelocity()); 2941 } else if (y > rangeY && oldY <= rangeY) { 2942 mEdgeGlowBottom.onAbsorb((int) mScroller.getCurrVelocity()); 2943 } 2944 } 2945 2946 if (rangeX > 0) { 2947 if (x < 0 && oldX >= 0) { 2948 mEdgeGlowLeft.onAbsorb((int) mScroller.getCurrVelocity()); 2949 } else if (x > rangeX && oldX <= rangeX) { 2950 mEdgeGlowRight.onAbsorb((int) mScroller.getCurrVelocity()); 2951 } 2952 } 2953 } 2954 } 2955 if (mScroller.isFinished()) { 2956 mPrivateHandler.sendEmptyMessage(RESUME_WEBCORE_PRIORITY); 2957 } 2958 } else { 2959 super.computeScroll(); 2960 } 2961 } 2962 2963 private static int computeDuration(int dx, int dy) { 2964 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2965 int duration = distance * 1000 / STD_SPEED; 2966 return Math.min(duration, MAX_DURATION); 2967 } 2968 2969 // helper to pin the scrollBy parameters (already in view coordinates) 2970 // returns true if the scroll was changed 2971 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2972 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2973 } 2974 // helper to pin the scrollTo parameters (already in view coordinates) 2975 // returns true if the scroll was changed 2976 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2977 x = pinLocX(x); 2978 y = pinLocY(y); 2979 int dx = x - mScrollX; 2980 int dy = y - mScrollY; 2981 2982 if ((dx | dy) == 0) { 2983 return false; 2984 } 2985 if (animate) { 2986 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2987 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2988 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2989 awakenScrollBars(mScroller.getDuration()); 2990 invalidate(); 2991 } else { 2992 abortAnimation(); // just in case 2993 scrollTo(x, y); 2994 } 2995 return true; 2996 } 2997 2998 // Scale from content to view coordinates, and pin. 2999 // Also called by jni webview.cpp 3000 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3001 if (mDrawHistory) { 3002 // disallow WebView to change the scroll position as History Picture 3003 // is used in the view system. 3004 // TODO: as we switchOutDrawHistory when trackball or navigation 3005 // keys are hit, this should be safe. Right? 3006 return false; 3007 } 3008 cx = contentToViewDimension(cx); 3009 cy = contentToViewDimension(cy); 3010 if (mHeightCanMeasure) { 3011 // move our visible rect according to scroll request 3012 if (cy != 0) { 3013 Rect tempRect = new Rect(); 3014 calcOurVisibleRect(tempRect); 3015 tempRect.offset(cx, cy); 3016 requestRectangleOnScreen(tempRect); 3017 } 3018 // FIXME: We scroll horizontally no matter what because currently 3019 // ScrollView and ListView will not scroll horizontally. 3020 // FIXME: Why do we only scroll horizontally if there is no 3021 // vertical scroll? 3022// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3023 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3024 } else { 3025 return pinScrollBy(cx, cy, animate, 0); 3026 } 3027 } 3028 3029 /** 3030 * Called by CallbackProxy when the page finishes loading. 3031 * @param url The URL of the page which has finished loading. 3032 */ 3033 /* package */ void onPageFinished(String url) { 3034 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3035 // If the user is now on a different page, or has scrolled the page 3036 // past the point where the title bar is offscreen, ignore the 3037 // scroll request. 3038 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3039 && mScrollX == 0 && mScrollY == 0) { 3040 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3041 SLIDE_TITLE_DURATION); 3042 } 3043 mPageThatNeedsToSlideTitleBarOffScreen = null; 3044 } 3045 } 3046 3047 /** 3048 * The URL of a page that sent a message to scroll the title bar off screen. 3049 * 3050 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3051 * title bar off the screen. Sometimes, the scroll position is set before 3052 * the page finishes loading. Rather than scrolling while the page is still 3053 * loading, keep track of the URL and new scroll position so we can perform 3054 * the scroll once the page finishes loading. 3055 */ 3056 private String mPageThatNeedsToSlideTitleBarOffScreen; 3057 3058 /** 3059 * The destination Y scroll position to be used when the page finishes 3060 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3061 */ 3062 private int mYDistanceToSlideTitleOffScreen; 3063 3064 // scale from content to view coordinates, and pin 3065 // return true if pin caused the final x/y different than the request cx/cy, 3066 // and a future scroll may reach the request cx/cy after our size has 3067 // changed 3068 // return false if the view scroll to the exact position as it is requested, 3069 // where negative numbers are taken to mean 0 3070 private boolean setContentScrollTo(int cx, int cy) { 3071 if (mDrawHistory) { 3072 // disallow WebView to change the scroll position as History Picture 3073 // is used in the view system. 3074 // One known case where this is called is that WebCore tries to 3075 // restore the scroll position. As history Picture already uses the 3076 // saved scroll position, it is ok to skip this. 3077 return false; 3078 } 3079 int vx; 3080 int vy; 3081 if ((cx | cy) == 0) { 3082 // If the page is being scrolled to (0,0), do not add in the title 3083 // bar's height, and simply scroll to (0,0). (The only other work 3084 // in contentToView_ is to multiply, so this would not change 0.) 3085 vx = 0; 3086 vy = 0; 3087 } else { 3088 vx = contentToViewX(cx); 3089 vy = contentToViewY(cy); 3090 } 3091// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3092// vx + " " + vy + "]"); 3093 // Some mobile sites attempt to scroll the title bar off the page by 3094 // scrolling to (0,1). If we are at the top left corner of the 3095 // page, assume this is an attempt to scroll off the title bar, and 3096 // animate the title bar off screen slowly enough that the user can see 3097 // it. 3098 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3099 && mTitleBar != null) { 3100 // FIXME: 100 should be defined somewhere as our max progress. 3101 if (getProgress() < 100) { 3102 // Wait to scroll the title bar off screen until the page has 3103 // finished loading. Keep track of the URL and the destination 3104 // Y position 3105 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3106 mYDistanceToSlideTitleOffScreen = vy; 3107 } else { 3108 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3109 } 3110 // Since we are animating, we have not yet reached the desired 3111 // scroll position. Do not return true to request another attempt 3112 return false; 3113 } 3114 pinScrollTo(vx, vy, false, 0); 3115 // If the request was to scroll to a negative coordinate, treat it as if 3116 // it was a request to scroll to 0 3117 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3118 return true; 3119 } else { 3120 return false; 3121 } 3122 } 3123 3124 // scale from content to view coordinates, and pin 3125 private void spawnContentScrollTo(int cx, int cy) { 3126 if (mDrawHistory) { 3127 // disallow WebView to change the scroll position as History Picture 3128 // is used in the view system. 3129 return; 3130 } 3131 int vx = contentToViewX(cx); 3132 int vy = contentToViewY(cy); 3133 pinScrollTo(vx, vy, true, 0); 3134 } 3135 3136 /** 3137 * These are from webkit, and are in content coordinate system (unzoomed) 3138 */ 3139 private void contentSizeChanged(boolean updateLayout) { 3140 // suppress 0,0 since we usually see real dimensions soon after 3141 // this avoids drawing the prev content in a funny place. If we find a 3142 // way to consolidate these notifications, this check may become 3143 // obsolete 3144 if ((mContentWidth | mContentHeight) == 0) { 3145 return; 3146 } 3147 3148 if (mHeightCanMeasure) { 3149 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3150 || updateLayout) { 3151 requestLayout(); 3152 } 3153 } else if (mWidthCanMeasure) { 3154 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3155 || updateLayout) { 3156 requestLayout(); 3157 } 3158 } else { 3159 // If we don't request a layout, try to send our view size to the 3160 // native side to ensure that WebCore has the correct dimensions. 3161 sendViewSizeZoom(); 3162 } 3163 } 3164 3165 /** 3166 * Set the WebViewClient that will receive various notifications and 3167 * requests. This will replace the current handler. 3168 * @param client An implementation of WebViewClient. 3169 */ 3170 public void setWebViewClient(WebViewClient client) { 3171 mCallbackProxy.setWebViewClient(client); 3172 } 3173 3174 /** 3175 * Gets the WebViewClient 3176 * @return the current WebViewClient instance. 3177 * 3178 *@hide pending API council approval. 3179 */ 3180 public WebViewClient getWebViewClient() { 3181 return mCallbackProxy.getWebViewClient(); 3182 } 3183 3184 /** 3185 * Register the interface to be used when content can not be handled by 3186 * the rendering engine, and should be downloaded instead. This will replace 3187 * the current handler. 3188 * @param listener An implementation of DownloadListener. 3189 */ 3190 public void setDownloadListener(DownloadListener listener) { 3191 mCallbackProxy.setDownloadListener(listener); 3192 } 3193 3194 /** 3195 * Set the chrome handler. This is an implementation of WebChromeClient for 3196 * use in handling Javascript dialogs, favicons, titles, and the progress. 3197 * This will replace the current handler. 3198 * @param client An implementation of WebChromeClient. 3199 */ 3200 public void setWebChromeClient(WebChromeClient client) { 3201 mCallbackProxy.setWebChromeClient(client); 3202 } 3203 3204 /** 3205 * Gets the chrome handler. 3206 * @return the current WebChromeClient instance. 3207 * 3208 * @hide API council approval. 3209 */ 3210 public WebChromeClient getWebChromeClient() { 3211 return mCallbackProxy.getWebChromeClient(); 3212 } 3213 3214 /** 3215 * Set the back/forward list client. This is an implementation of 3216 * WebBackForwardListClient for handling new items and changes in the 3217 * history index. 3218 * @param client An implementation of WebBackForwardListClient. 3219 * {@hide} 3220 */ 3221 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3222 mCallbackProxy.setWebBackForwardListClient(client); 3223 } 3224 3225 /** 3226 * Gets the WebBackForwardListClient. 3227 * {@hide} 3228 */ 3229 public WebBackForwardListClient getWebBackForwardListClient() { 3230 return mCallbackProxy.getWebBackForwardListClient(); 3231 } 3232 3233 /** 3234 * Set the Picture listener. This is an interface used to receive 3235 * notifications of a new Picture. 3236 * @param listener An implementation of WebView.PictureListener. 3237 */ 3238 public void setPictureListener(PictureListener listener) { 3239 mPictureListener = listener; 3240 } 3241 3242 /** 3243 * {@hide} 3244 */ 3245 /* FIXME: Debug only! Remove for SDK! */ 3246 public void externalRepresentation(Message callback) { 3247 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3248 } 3249 3250 /** 3251 * {@hide} 3252 */ 3253 /* FIXME: Debug only! Remove for SDK! */ 3254 public void documentAsText(Message callback) { 3255 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3256 } 3257 3258 /** 3259 * Use this function to bind an object to Javascript so that the 3260 * methods can be accessed from Javascript. 3261 * <p><strong>IMPORTANT:</strong> 3262 * <ul> 3263 * <li> Using addJavascriptInterface() allows JavaScript to control your 3264 * application. This can be a very useful feature or a dangerous security 3265 * issue. When the HTML in the WebView is untrustworthy (for example, part 3266 * or all of the HTML is provided by some person or process), then an 3267 * attacker could inject HTML that will execute your code and possibly any 3268 * code of the attacker's choosing.<br> 3269 * Do not use addJavascriptInterface() unless all of the HTML in this 3270 * WebView was written by you.</li> 3271 * <li> The Java object that is bound runs in another thread and not in 3272 * the thread that it was constructed in.</li> 3273 * </ul></p> 3274 * @param obj The class instance to bind to Javascript 3275 * @param interfaceName The name to used to expose the class in Javascript 3276 */ 3277 public void addJavascriptInterface(Object obj, String interfaceName) { 3278 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3279 arg.mObject = obj; 3280 arg.mInterfaceName = interfaceName; 3281 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3282 } 3283 3284 /** 3285 * Return the WebSettings object used to control the settings for this 3286 * WebView. 3287 * @return A WebSettings object that can be used to control this WebView's 3288 * settings. 3289 */ 3290 public WebSettings getSettings() { 3291 return mWebViewCore.getSettings(); 3292 } 3293 3294 /** 3295 * Use this method to inform the webview about packages that are installed 3296 * in the system. This information will be used by the 3297 * navigator.isApplicationInstalled() API. 3298 * @param packageNames is a set of package names that are known to be 3299 * installed in the system. 3300 * 3301 * @hide not a public API 3302 */ 3303 public void addPackageNames(Set<String> packageNames) { 3304 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 3305 } 3306 3307 /** 3308 * Use this method to inform the webview about single packages that are 3309 * installed in the system. This information will be used by the 3310 * navigator.isApplicationInstalled() API. 3311 * @param packageName is the name of a package that is known to be 3312 * installed in the system. 3313 * 3314 * @hide not a public API 3315 */ 3316 public void addPackageName(String packageName) { 3317 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3318 } 3319 3320 /** 3321 * Use this method to inform the webview about packages that are uninstalled 3322 * in the system. This information will be used by the 3323 * navigator.isApplicationInstalled() API. 3324 * @param packageName is the name of a package that has been uninstalled in 3325 * the system. 3326 * 3327 * @hide not a public API 3328 */ 3329 public void removePackageName(String packageName) { 3330 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3331 } 3332 3333 /** 3334 * Return the list of currently loaded plugins. 3335 * @return The list of currently loaded plugins. 3336 * 3337 * @deprecated This was used for Gears, which has been deprecated. 3338 */ 3339 @Deprecated 3340 public static synchronized PluginList getPluginList() { 3341 return new PluginList(); 3342 } 3343 3344 /** 3345 * @deprecated This was used for Gears, which has been deprecated. 3346 */ 3347 @Deprecated 3348 public void refreshPlugins(boolean reloadOpenPages) { } 3349 3350 //------------------------------------------------------------------------- 3351 // Override View methods 3352 //------------------------------------------------------------------------- 3353 3354 @Override 3355 protected void finalize() throws Throwable { 3356 try { 3357 destroy(); 3358 } finally { 3359 super.finalize(); 3360 } 3361 } 3362 3363 @Override 3364 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3365 if (child == mTitleBar) { 3366 // When drawing the title bar, move it horizontally to always show 3367 // at the top of the WebView. 3368 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3369 } 3370 return super.drawChild(canvas, child, drawingTime); 3371 } 3372 3373 private void drawContent(Canvas canvas) { 3374 // Update the buttons in the picture, so when we draw the picture 3375 // to the screen, they are in the correct state. 3376 // Tell the native side if user is a) touching the screen, 3377 // b) pressing the trackball down, or c) pressing the enter key 3378 // If the cursor is on a button, we need to draw it in the pressed 3379 // state. 3380 // If mNativeClass is 0, we should not reach here, so we do not 3381 // need to check it again. 3382 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3383 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3384 || mTrackballDown || mGotCenterDown, false); 3385 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3386 } 3387 3388 @Override 3389 protected void onDraw(Canvas canvas) { 3390 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3391 if (mNativeClass == 0) { 3392 return; 3393 } 3394 3395 // if both mContentWidth and mContentHeight are 0, it means there is no 3396 // valid Picture passed to WebView yet. This can happen when WebView 3397 // just starts. Draw the background and return. 3398 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3399 canvas.drawColor(mBackgroundColor); 3400 return; 3401 } 3402 3403 int saveCount = canvas.save(); 3404 if (mInOverScrollMode && !getSettings() 3405 .getUseWebViewBackgroundForOverscrollBackground()) { 3406 if (mOverScrollBackground == null) { 3407 mOverScrollBackground = new Paint(); 3408 Bitmap bm = BitmapFactory.decodeResource( 3409 mContext.getResources(), 3410 com.android.internal.R.drawable.status_bar_background); 3411 mOverScrollBackground.setShader(new BitmapShader(bm, 3412 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3413 mOverScrollBorder = new Paint(); 3414 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3415 mOverScrollBorder.setStrokeWidth(0); 3416 mOverScrollBorder.setColor(0xffbbbbbb); 3417 } 3418 3419 int top = 0; 3420 int right = computeRealHorizontalScrollRange(); 3421 int bottom = top + computeRealVerticalScrollRange(); 3422 // first draw the background and anchor to the top of the view 3423 canvas.save(); 3424 canvas.translate(mScrollX, mScrollY); 3425 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3426 - mScrollY, Region.Op.DIFFERENCE); 3427 canvas.drawPaint(mOverScrollBackground); 3428 canvas.restore(); 3429 // then draw the border 3430 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3431 // next clip the region for the content 3432 canvas.clipRect(0, top, right, bottom); 3433 } 3434 if (mTitleBar != null) { 3435 canvas.translate(0, (int) mTitleBar.getHeight()); 3436 } 3437 if (mDragTrackerHandler == null) { 3438 drawContent(canvas); 3439 } else { 3440 if (!mDragTrackerHandler.draw(canvas)) { 3441 // sometimes the tracker doesn't draw, even though its active 3442 drawContent(canvas); 3443 } 3444 if (mDragTrackerHandler.isFinished()) { 3445 mDragTrackerHandler = null; 3446 } 3447 } 3448 canvas.restoreToCount(saveCount); 3449 3450 // Now draw the shadow. 3451 int titleH = getVisibleTitleHeight(); 3452 if (mTitleBar != null && titleH == 0) { 3453 int height = (int) (5f * getContext().getResources() 3454 .getDisplayMetrics().density); 3455 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3456 mScrollY + height); 3457 mTitleShadow.draw(canvas); 3458 } 3459 3460 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3461 invalidate(); 3462 } 3463 mWebViewCore.signalRepaintDone(); 3464 } 3465 3466 @Override 3467 public void draw(Canvas canvas) { 3468 super.draw(canvas); 3469 if (mEdgeGlowTop != null && drawEdgeGlows(canvas)) { 3470 invalidate(); 3471 } 3472 } 3473 3474 /** 3475 * Draw the glow effect along the sides of the widget. mEdgeGlow* must be non-null. 3476 * 3477 * @param canvas Canvas to draw into, transformed into view coordinates. 3478 * @return true if glow effects are still animating and the view should invalidate again. 3479 */ 3480 private boolean drawEdgeGlows(Canvas canvas) { 3481 final int scrollX = mScrollX; 3482 final int scrollY = mScrollY; 3483 final int width = getWidth(); 3484 int height = getHeight(); 3485 3486 boolean invalidateForGlow = false; 3487 if (!mEdgeGlowTop.isFinished()) { 3488 final int restoreCount = canvas.save(); 3489 3490 canvas.translate(-width / 2 + scrollX, Math.min(0, scrollY)); 3491 mEdgeGlowTop.setSize(width * 2, height); 3492 invalidateForGlow |= mEdgeGlowTop.draw(canvas); 3493 canvas.restoreToCount(restoreCount); 3494 } 3495 if (!mEdgeGlowBottom.isFinished()) { 3496 final int restoreCount = canvas.save(); 3497 3498 canvas.translate(-width / 2 + scrollX, Math.max(computeMaxScrollY(), scrollY) + height); 3499 canvas.rotate(180, width, 0); 3500 mEdgeGlowBottom.setSize(width * 2, height); 3501 invalidateForGlow |= mEdgeGlowBottom.draw(canvas); 3502 canvas.restoreToCount(restoreCount); 3503 } 3504 if (!mEdgeGlowLeft.isFinished()) { 3505 final int restoreCount = canvas.save(); 3506 3507 canvas.rotate(270); 3508 canvas.translate(-height * 1.5f - scrollY, Math.min(0, scrollX)); 3509 mEdgeGlowLeft.setSize(height * 2, width); 3510 invalidateForGlow |= mEdgeGlowLeft.draw(canvas); 3511 canvas.restoreToCount(restoreCount); 3512 } 3513 if (!mEdgeGlowRight.isFinished()) { 3514 final int restoreCount = canvas.save(); 3515 3516 canvas.rotate(90); 3517 canvas.translate(-height / 2 + scrollY, 3518 -(Math.max(computeMaxScrollX(), scrollX) + width)); 3519 mEdgeGlowRight.setSize(height * 2, width); 3520 invalidateForGlow |= mEdgeGlowRight.draw(canvas); 3521 canvas.restoreToCount(restoreCount); 3522 } 3523 return invalidateForGlow; 3524 } 3525 3526 @Override 3527 public void setLayoutParams(ViewGroup.LayoutParams params) { 3528 if (params.height == LayoutParams.WRAP_CONTENT) { 3529 mWrapContent = true; 3530 } 3531 super.setLayoutParams(params); 3532 } 3533 3534 @Override 3535 public boolean performLongClick() { 3536 // performLongClick() is the result of a delayed message. If we switch 3537 // to windows overview, the WebView will be temporarily removed from the 3538 // view system. In that case, do nothing. 3539 if (getParent() == null) return false; 3540 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3541 // Send the click so that the textfield is in focus 3542 centerKeyPressOnTextField(); 3543 rebuildWebTextView(); 3544 } else { 3545 clearTextEntry(true); 3546 } 3547 if (inEditingMode()) { 3548 return mWebTextView.performLongClick(); 3549 } 3550 /* if long click brings up a context menu, the super function 3551 * returns true and we're done. Otherwise, nothing happened when 3552 * the user clicked. */ 3553 if (super.performLongClick()) { 3554 return true; 3555 } 3556 /* In the case where the application hasn't already handled the long 3557 * click action, look for a word under the click. If one is found, 3558 * animate the text selection into view. 3559 * FIXME: no animation code yet */ 3560 if (mSelectingText) return false; // long click does nothing on selection 3561 int x = viewToContentX((int) mLastTouchX + mScrollX); 3562 int y = viewToContentY((int) mLastTouchY + mScrollY); 3563 setUpSelect(); 3564 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3565 nativeSetExtendSelection(); 3566 WebChromeClient client = getWebChromeClient(); 3567 if (client != null) client.onSelectionStart(this); 3568 return true; 3569 } 3570 notifySelectDialogDismissed(); 3571 return false; 3572 } 3573 3574 boolean inAnimateZoom() { 3575 return mZoomScale != 0; 3576 } 3577 3578 /** 3579 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3580 * has changed. This is especially important for password fields, which are 3581 * drawn by the WebTextView, since it conveys more information than what 3582 * webkit draws. Thus we need to reposition it to show in the correct 3583 * place. 3584 */ 3585 private boolean mNeedToAdjustWebTextView; 3586 3587 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3588 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3589 Rect vBox = contentToViewRect(contentBounds); 3590 Rect visibleRect = new Rect(); 3591 calcOurVisibleRect(visibleRect); 3592 // If the textfield is on screen, place the WebTextView in 3593 // its new place, accounting for our new scroll/zoom values, 3594 // and adjust its textsize. 3595 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3596 : visibleRect.contains(vBox)) { 3597 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3598 vBox.height()); 3599 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3600 contentToViewDimension( 3601 nativeFocusCandidateTextSize())); 3602 return true; 3603 } else { 3604 // The textfield is now off screen. The user probably 3605 // was not zooming to see the textfield better. Remove 3606 // the WebTextView. If the user types a key, and the 3607 // textfield is still in focus, we will reconstruct 3608 // the WebTextView and scroll it back on screen. 3609 mWebTextView.remove(); 3610 return false; 3611 } 3612 } 3613 3614 private void drawExtras(Canvas canvas, int extras, boolean animationsRunning) { 3615 // If mNativeClass is 0, we should not reach here, so we do not 3616 // need to check it again. 3617 if (animationsRunning) { 3618 canvas.setDrawFilter(mWebViewCore.mZoomFilter); 3619 } 3620 nativeDrawExtras(canvas, extras); 3621 canvas.setDrawFilter(null); 3622 } 3623 3624 private void drawCoreAndCursorRing(Canvas canvas, int color, 3625 boolean drawCursorRing) { 3626 if (mDrawHistory) { 3627 canvas.scale(mActualScale, mActualScale); 3628 canvas.drawPicture(mHistoryPicture); 3629 return; 3630 } 3631 3632 boolean animateZoom = mZoomScale != 0; 3633 boolean animateScroll = ((!mScroller.isFinished() 3634 || mVelocityTracker != null) 3635 && (mTouchMode != TOUCH_DRAG_MODE || 3636 mHeldMotionless != MOTIONLESS_TRUE)) 3637 || mDeferTouchMode == TOUCH_DRAG_MODE; 3638 if (mTouchMode == TOUCH_DRAG_MODE) { 3639 if (mHeldMotionless == MOTIONLESS_PENDING) { 3640 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3641 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3642 mHeldMotionless = MOTIONLESS_FALSE; 3643 } 3644 if (mHeldMotionless == MOTIONLESS_FALSE) { 3645 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3646 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3647 mHeldMotionless = MOTIONLESS_PENDING; 3648 } 3649 } 3650 if (animateZoom) { 3651 float zoomScale; 3652 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3653 if (interval < ZOOM_ANIMATION_LENGTH) { 3654 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3655 zoomScale = 1.0f / (mInvInitialZoomScale 3656 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3657 invalidate(); 3658 } else { 3659 zoomScale = mZoomScale; 3660 // set mZoomScale to be 0 as we have done animation 3661 mZoomScale = 0; 3662 WebViewCore.resumeUpdatePicture(mWebViewCore); 3663 // call invalidate() again to draw with the final filters 3664 invalidate(); 3665 if (mNeedToAdjustWebTextView) { 3666 mNeedToAdjustWebTextView = false; 3667 if (didUpdateTextViewBounds(false) 3668 && nativeFocusCandidateIsPassword()) { 3669 // If it is a password field, start drawing the 3670 // WebTextView once again. 3671 mWebTextView.setInPassword(true); 3672 } 3673 } 3674 } 3675 // calculate the intermediate scroll position. As we need to use 3676 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3677 float scale = zoomScale * mInvInitialZoomScale; 3678 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3679 - mZoomCenterX); 3680 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3681 * zoomScale)) + mScrollX; 3682 int titleHeight = getTitleHeight(); 3683 int ty = Math.round(scale 3684 * (mInitialScrollY + mZoomCenterY - titleHeight) 3685 - (mZoomCenterY - titleHeight)); 3686 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3687 - titleHeight, getViewHeight(), Math.round(mContentHeight 3688 * zoomScale)) + titleHeight) + mScrollY; 3689 canvas.translate(tx, ty); 3690 canvas.scale(zoomScale, zoomScale); 3691 if (inEditingMode() && !mNeedToAdjustWebTextView 3692 && mZoomScale != 0) { 3693 // The WebTextView is up. Keep track of this so we can adjust 3694 // its size and placement when we finish zooming 3695 mNeedToAdjustWebTextView = true; 3696 // If it is in password mode, turn it off so it does not draw 3697 // misplaced. 3698 if (nativeFocusCandidateIsPassword()) { 3699 mWebTextView.setInPassword(false); 3700 } 3701 } 3702 } else { 3703 canvas.scale(mActualScale, mActualScale); 3704 } 3705 3706 boolean UIAnimationsRunning = false; 3707 // Currently for each draw we compute the animation values; 3708 // We may in the future decide to do that independently. 3709 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3710 UIAnimationsRunning = true; 3711 // If we have unfinished (or unstarted) animations, 3712 // we ask for a repaint. 3713 invalidate(); 3714 } 3715 mWebViewCore.drawContentPicture(canvas, color, 3716 (animateZoom || mPreviewZoomOnly || UIAnimationsRunning), 3717 animateScroll); 3718 if (mNativeClass == 0) return; 3719 // decide which adornments to draw 3720 int extras = DRAW_EXTRAS_NONE; 3721 if (mFindIsUp) { 3722 extras = DRAW_EXTRAS_FIND; 3723 } else if (mSelectingText) { 3724 extras = DRAW_EXTRAS_SELECTION; 3725 nativeSetSelectionPointer(mDrawSelectionPointer, 3726 mInvActualScale, 3727 mSelectX, mSelectY - getTitleHeight()); 3728 } else if (drawCursorRing) { 3729 extras = DRAW_EXTRAS_CURSOR_RING; 3730 } 3731 drawExtras(canvas, extras, UIAnimationsRunning); 3732 3733 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3734 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3735 mTouchMode = TOUCH_SHORTPRESS_MODE; 3736 } 3737 } 3738 if (mFocusSizeChanged) { 3739 mFocusSizeChanged = false; 3740 // If we are zooming, this will get handled above, when the zoom 3741 // finishes. We also do not need to do this unless the WebTextView 3742 // is showing. 3743 if (!animateZoom && inEditingMode()) { 3744 didUpdateTextViewBounds(true); 3745 } 3746 } 3747 } 3748 3749 // draw history 3750 private boolean mDrawHistory = false; 3751 private Picture mHistoryPicture = null; 3752 private int mHistoryWidth = 0; 3753 private int mHistoryHeight = 0; 3754 3755 // Only check the flag, can be called from WebCore thread 3756 boolean drawHistory() { 3757 return mDrawHistory; 3758 } 3759 3760 // Should only be called in UI thread 3761 void switchOutDrawHistory() { 3762 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3763 if (mDrawHistory && mWebViewCore.pictureReady()) { 3764 mDrawHistory = false; 3765 mHistoryPicture = null; 3766 invalidate(); 3767 int oldScrollX = mScrollX; 3768 int oldScrollY = mScrollY; 3769 mScrollX = pinLocX(mScrollX); 3770 mScrollY = pinLocY(mScrollY); 3771 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3772 mUserScroll = false; 3773 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3774 oldScrollY); 3775 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3776 } else { 3777 sendOurVisibleRect(); 3778 } 3779 } 3780 } 3781 3782 WebViewCore.CursorData cursorData() { 3783 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3784 result.mMoveGeneration = nativeMoveGeneration(); 3785 result.mFrame = nativeCursorFramePointer(); 3786 Point position = nativeCursorPosition(); 3787 result.mX = position.x; 3788 result.mY = position.y; 3789 return result; 3790 } 3791 3792 /** 3793 * Delete text from start to end in the focused textfield. If there is no 3794 * focus, or if start == end, silently fail. If start and end are out of 3795 * order, swap them. 3796 * @param start Beginning of selection to delete. 3797 * @param end End of selection to delete. 3798 */ 3799 /* package */ void deleteSelection(int start, int end) { 3800 mTextGeneration++; 3801 WebViewCore.TextSelectionData data 3802 = new WebViewCore.TextSelectionData(start, end); 3803 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3804 data); 3805 } 3806 3807 /** 3808 * Set the selection to (start, end) in the focused textfield. If start and 3809 * end are out of order, swap them. 3810 * @param start Beginning of selection. 3811 * @param end End of selection. 3812 */ 3813 /* package */ void setSelection(int start, int end) { 3814 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3815 } 3816 3817 @Override 3818 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3819 InputConnection connection = super.onCreateInputConnection(outAttrs); 3820 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3821 return connection; 3822 } 3823 3824 /** 3825 * Called in response to a message from webkit telling us that the soft 3826 * keyboard should be launched. 3827 */ 3828 private void displaySoftKeyboard(boolean isTextView) { 3829 InputMethodManager imm = (InputMethodManager) 3830 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3831 3832 // bring it back to the default scale so that user can enter text 3833 boolean zoom = mActualScale < mDefaultScale; 3834 if (zoom) { 3835 mInZoomOverview = false; 3836 mZoomCenterX = mLastTouchX; 3837 mZoomCenterY = mLastTouchY; 3838 // do not change text wrap scale so that there is no reflow 3839 setNewZoomScale(mDefaultScale, false, false); 3840 } 3841 if (isTextView) { 3842 rebuildWebTextView(); 3843 if (inEditingMode()) { 3844 imm.showSoftInput(mWebTextView, 0); 3845 if (zoom) { 3846 didUpdateTextViewBounds(true); 3847 } 3848 return; 3849 } 3850 } 3851 // Used by plugins. 3852 // Also used if the navigation cache is out of date, and 3853 // does not recognize that a textfield is in focus. In that 3854 // case, use WebView as the targeted view. 3855 // see http://b/issue?id=2457459 3856 imm.showSoftInput(this, 0); 3857 } 3858 3859 // Called by WebKit to instruct the UI to hide the keyboard 3860 private void hideSoftKeyboard() { 3861 InputMethodManager imm = (InputMethodManager) 3862 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3863 3864 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3865 } 3866 3867 /* 3868 * This method checks the current focus and cursor and potentially rebuilds 3869 * mWebTextView to have the appropriate properties, such as password, 3870 * multiline, and what text it contains. It also removes it if necessary. 3871 */ 3872 /* package */ void rebuildWebTextView() { 3873 // If the WebView does not have focus, do nothing until it gains focus. 3874 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3875 return; 3876 } 3877 boolean alreadyThere = inEditingMode(); 3878 // inEditingMode can only return true if mWebTextView is non-null, 3879 // so we can safely call remove() if (alreadyThere) 3880 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3881 if (alreadyThere) { 3882 mWebTextView.remove(); 3883 } 3884 return; 3885 } 3886 // At this point, we know we have found an input field, so go ahead 3887 // and create the WebTextView if necessary. 3888 if (mWebTextView == null) { 3889 mWebTextView = new WebTextView(mContext, WebView.this); 3890 // Initialize our generation number. 3891 mTextGeneration = 0; 3892 } 3893 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3894 contentToViewDimension(nativeFocusCandidateTextSize())); 3895 Rect visibleRect = new Rect(); 3896 calcOurContentVisibleRect(visibleRect); 3897 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3898 // should be in content coordinates. 3899 Rect bounds = nativeFocusCandidateNodeBounds(); 3900 Rect vBox = contentToViewRect(bounds); 3901 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3902 if (!Rect.intersects(bounds, visibleRect)) { 3903 mWebTextView.bringIntoView(); 3904 } 3905 String text = nativeFocusCandidateText(); 3906 int nodePointer = nativeFocusCandidatePointer(); 3907 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3908 // It is possible that we have the same textfield, but it has moved, 3909 // i.e. In the case of opening/closing the screen. 3910 // In that case, we need to set the dimensions, but not the other 3911 // aspects. 3912 // If the text has been changed by webkit, update it. However, if 3913 // there has been more UI text input, ignore it. We will receive 3914 // another update when that text is recognized. 3915 if (text != null && !text.equals(mWebTextView.getText().toString()) 3916 && nativeTextGeneration() == mTextGeneration) { 3917 mWebTextView.setTextAndKeepSelection(text); 3918 } 3919 } else { 3920 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3921 Gravity.RIGHT : Gravity.NO_GRAVITY); 3922 // This needs to be called before setType, which may call 3923 // requestFormData, and it needs to have the correct nodePointer. 3924 mWebTextView.setNodePointer(nodePointer); 3925 mWebTextView.setType(nativeFocusCandidateType()); 3926 if (null == text) { 3927 if (DebugFlags.WEB_VIEW) { 3928 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3929 } 3930 text = ""; 3931 } 3932 mWebTextView.setTextAndKeepSelection(text); 3933 InputMethodManager imm = InputMethodManager.peekInstance(); 3934 if (imm != null && imm.isActive(mWebTextView)) { 3935 imm.restartInput(mWebTextView); 3936 } 3937 } 3938 mWebTextView.requestFocus(); 3939 } 3940 3941 /** 3942 * Called by WebTextView to find saved form data associated with the 3943 * textfield 3944 * @param name Name of the textfield. 3945 * @param nodePointer Pointer to the node of the textfield, so it can be 3946 * compared to the currently focused textfield when the data is 3947 * retrieved. 3948 */ 3949 /* package */ void requestFormData(String name, int nodePointer) { 3950 if (mWebViewCore.getSettings().getSaveFormData()) { 3951 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3952 update.arg1 = nodePointer; 3953 RequestFormData updater = new RequestFormData(name, getUrl(), 3954 update); 3955 Thread t = new Thread(updater); 3956 t.start(); 3957 } 3958 } 3959 3960 /** 3961 * Pass a message to find out the <label> associated with the <input> 3962 * identified by nodePointer 3963 * @param framePointer Pointer to the frame containing the <input> node 3964 * @param nodePointer Pointer to the node for which a <label> is desired. 3965 */ 3966 /* package */ void requestLabel(int framePointer, int nodePointer) { 3967 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3968 nodePointer); 3969 } 3970 3971 /* 3972 * This class requests an Adapter for the WebTextView which shows past 3973 * entries stored in the database. It is a Runnable so that it can be done 3974 * in its own thread, without slowing down the UI. 3975 */ 3976 private class RequestFormData implements Runnable { 3977 private String mName; 3978 private String mUrl; 3979 private Message mUpdateMessage; 3980 3981 public RequestFormData(String name, String url, Message msg) { 3982 mName = name; 3983 mUrl = url; 3984 mUpdateMessage = msg; 3985 } 3986 3987 public void run() { 3988 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3989 if (pastEntries.size() > 0) { 3990 AutoCompleteAdapter adapter = new 3991 AutoCompleteAdapter(mContext, pastEntries); 3992 mUpdateMessage.obj = adapter; 3993 mUpdateMessage.sendToTarget(); 3994 } 3995 } 3996 } 3997 3998 /** 3999 * Dump the display tree to "/sdcard/displayTree.txt" 4000 * 4001 * @hide debug only 4002 */ 4003 public void dumpDisplayTree() { 4004 nativeDumpDisplayTree(getUrl()); 4005 } 4006 4007 /** 4008 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4009 * "/sdcard/domTree.txt" 4010 * 4011 * @hide debug only 4012 */ 4013 public void dumpDomTree(boolean toFile) { 4014 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4015 } 4016 4017 /** 4018 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4019 * to "/sdcard/renderTree.txt" 4020 * 4021 * @hide debug only 4022 */ 4023 public void dumpRenderTree(boolean toFile) { 4024 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4025 } 4026 4027 /** 4028 * Dump the V8 counters to standard output. 4029 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4030 * true. Otherwise, this will do nothing. 4031 * 4032 * @hide debug only 4033 */ 4034 public void dumpV8Counters() { 4035 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4036 } 4037 4038 // This is used to determine long press with the center key. Does not 4039 // affect long press with the trackball/touch. 4040 private boolean mGotCenterDown = false; 4041 4042 @Override 4043 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4044 // send complex characters to webkit for use by JS and plugins 4045 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4046 // pass the key to DOM 4047 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4048 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4049 // return true as DOM handles the key 4050 return true; 4051 } 4052 return false; 4053 } 4054 4055 @Override 4056 public boolean onKeyDown(int keyCode, KeyEvent event) { 4057 if (DebugFlags.WEB_VIEW) { 4058 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4059 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4060 } 4061 4062 if (mNativeClass == 0) { 4063 return false; 4064 } 4065 4066 // do this hack up front, so it always works, regardless of touch-mode 4067 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4068 mAutoRedraw = !mAutoRedraw; 4069 if (mAutoRedraw) { 4070 invalidate(); 4071 } 4072 return true; 4073 } 4074 4075 // Bubble up the key event if 4076 // 1. it is a system key; or 4077 // 2. the host application wants to handle it; 4078 if (event.isSystem() 4079 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4080 return false; 4081 } 4082 4083 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4084 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4085 if (nativeFocusIsPlugin()) { 4086 mShiftIsPressed = true; 4087 } else if (!nativeCursorWantsKeyEvents() && !mSelectingText) { 4088 setUpSelect(); 4089 } 4090 } 4091 4092 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4093 pageUp(false); 4094 return true; 4095 } 4096 4097 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4098 pageDown(false); 4099 return true; 4100 } 4101 4102 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4103 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4104 switchOutDrawHistory(); 4105 if (nativeFocusIsPlugin()) { 4106 letPluginHandleNavKey(keyCode, event.getEventTime(), true); 4107 return true; 4108 } 4109 if (mSelectingText) { 4110 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4111 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4112 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4113 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4114 int multiplier = event.getRepeatCount() + 1; 4115 moveSelection(xRate * multiplier, yRate * multiplier); 4116 return true; 4117 } 4118 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4119 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4120 return true; 4121 } 4122 // Bubble up the key event as WebView doesn't handle it 4123 return false; 4124 } 4125 4126 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4127 switchOutDrawHistory(); 4128 if (event.getRepeatCount() == 0) { 4129 if (mSelectingText) { 4130 return true; // discard press if copy in progress 4131 } 4132 mGotCenterDown = true; 4133 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4134 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4135 // Already checked mNativeClass, so we do not need to check it 4136 // again. 4137 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4138 return true; 4139 } 4140 // Bubble up the key event as WebView doesn't handle it 4141 return false; 4142 } 4143 4144 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 4145 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 4146 // turn off copy select if a shift-key combo is pressed 4147 selectionDone(); 4148 mShiftIsPressed = false; 4149 } 4150 4151 if (getSettings().getNavDump()) { 4152 switch (keyCode) { 4153 case KeyEvent.KEYCODE_4: 4154 dumpDisplayTree(); 4155 break; 4156 case KeyEvent.KEYCODE_5: 4157 case KeyEvent.KEYCODE_6: 4158 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4159 break; 4160 case KeyEvent.KEYCODE_7: 4161 case KeyEvent.KEYCODE_8: 4162 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4163 break; 4164 case KeyEvent.KEYCODE_9: 4165 nativeInstrumentReport(); 4166 return true; 4167 } 4168 } 4169 4170 if (nativeCursorIsTextInput()) { 4171 // This message will put the node in focus, for the DOM's notion 4172 // of focus, and make the focuscontroller active 4173 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 4174 nativeCursorNodePointer()); 4175 // This will bring up the WebTextView and put it in focus, for 4176 // our view system's notion of focus 4177 rebuildWebTextView(); 4178 // Now we need to pass the event to it 4179 if (inEditingMode()) { 4180 mWebTextView.setDefaultSelection(); 4181 return mWebTextView.dispatchKeyEvent(event); 4182 } 4183 } else if (nativeHasFocusNode()) { 4184 // In this case, the cursor is not on a text input, but the focus 4185 // might be. Check it, and if so, hand over to the WebTextView. 4186 rebuildWebTextView(); 4187 if (inEditingMode()) { 4188 mWebTextView.setDefaultSelection(); 4189 return mWebTextView.dispatchKeyEvent(event); 4190 } 4191 } 4192 4193 // TODO: should we pass all the keys to DOM or check the meta tag 4194 if (nativeCursorWantsKeyEvents() || true) { 4195 // pass the key to DOM 4196 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4197 // return true as DOM handles the key 4198 return true; 4199 } 4200 4201 // Bubble up the key event as WebView doesn't handle it 4202 return false; 4203 } 4204 4205 @Override 4206 public boolean onKeyUp(int keyCode, KeyEvent event) { 4207 if (DebugFlags.WEB_VIEW) { 4208 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4209 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4210 } 4211 4212 if (mNativeClass == 0) { 4213 return false; 4214 } 4215 4216 // special CALL handling when cursor node's href is "tel:XXX" 4217 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4218 String text = nativeCursorText(); 4219 if (!nativeCursorIsTextInput() && text != null 4220 && text.startsWith(SCHEME_TEL)) { 4221 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4222 getContext().startActivity(intent); 4223 return true; 4224 } 4225 } 4226 4227 // Bubble up the key event if 4228 // 1. it is a system key; or 4229 // 2. the host application wants to handle it; 4230 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 4231 return false; 4232 } 4233 4234 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4235 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4236 if (nativeFocusIsPlugin()) { 4237 mShiftIsPressed = false; 4238 } else if (copySelection()) { 4239 selectionDone(); 4240 return true; 4241 } 4242 } 4243 4244 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4245 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4246 if (nativeFocusIsPlugin()) { 4247 letPluginHandleNavKey(keyCode, event.getEventTime(), false); 4248 return true; 4249 } 4250 // always handle the navigation keys in the UI thread 4251 // Bubble up the key event as WebView doesn't handle it 4252 return false; 4253 } 4254 4255 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4256 // remove the long press message first 4257 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4258 mGotCenterDown = false; 4259 4260 if (mSelectingText) { 4261 if (mExtendSelection) { 4262 copySelection(); 4263 selectionDone(); 4264 } else { 4265 mExtendSelection = true; 4266 nativeSetExtendSelection(); 4267 invalidate(); // draw the i-beam instead of the arrow 4268 } 4269 return true; // discard press if copy in progress 4270 } 4271 4272 // perform the single click 4273 Rect visibleRect = sendOurVisibleRect(); 4274 // Note that sendOurVisibleRect calls viewToContent, so the 4275 // coordinates should be in content coordinates. 4276 if (!nativeCursorIntersects(visibleRect)) { 4277 return false; 4278 } 4279 WebViewCore.CursorData data = cursorData(); 4280 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4281 playSoundEffect(SoundEffectConstants.CLICK); 4282 if (nativeCursorIsTextInput()) { 4283 rebuildWebTextView(); 4284 centerKeyPressOnTextField(); 4285 if (inEditingMode()) { 4286 mWebTextView.setDefaultSelection(); 4287 } 4288 return true; 4289 } 4290 clearTextEntry(true); 4291 nativeSetFollowedLink(true); 4292 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4293 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4294 nativeCursorNodePointer()); 4295 } 4296 return true; 4297 } 4298 4299 // TODO: should we pass all the keys to DOM or check the meta tag 4300 if (nativeCursorWantsKeyEvents() || true) { 4301 // pass the key to DOM 4302 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4303 // return true as DOM handles the key 4304 return true; 4305 } 4306 4307 // Bubble up the key event as WebView doesn't handle it 4308 return false; 4309 } 4310 4311 /** 4312 * @hide pending API council approval. 4313 */ 4314 public void setUpSelect() { 4315 if (0 == mNativeClass) return; // client isn't initialized 4316 if (inFullScreenMode()) return; 4317 if (mSelectingText) return; 4318 mExtendSelection = false; 4319 mSelectingText = mDrawSelectionPointer = true; 4320 // don't let the picture change during text selection 4321 WebViewCore.pauseUpdatePicture(mWebViewCore); 4322 nativeResetSelection(); 4323 if (nativeHasCursorNode()) { 4324 Rect rect = nativeCursorNodeBounds(); 4325 mSelectX = contentToViewX(rect.left); 4326 mSelectY = contentToViewY(rect.top); 4327 } else if (mLastTouchY > getVisibleTitleHeight()) { 4328 mSelectX = mScrollX + (int) mLastTouchX; 4329 mSelectY = mScrollY + (int) mLastTouchY; 4330 } else { 4331 mSelectX = mScrollX + getViewWidth() / 2; 4332 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4333 } 4334 nativeHideCursor(); 4335 } 4336 4337 /** 4338 * Use this method to put the WebView into text selection mode. 4339 * Do not rely on this functionality; it will be deprecated in the future. 4340 */ 4341 public void emulateShiftHeld() { 4342 setUpSelect(); 4343 } 4344 4345 /** 4346 * @hide pending API council approval. 4347 */ 4348 public void selectAll() { 4349 if (0 == mNativeClass) return; // client isn't initialized 4350 if (inFullScreenMode()) return; 4351 if (!mSelectingText) setUpSelect(); 4352 nativeSelectAll(); 4353 mDrawSelectionPointer = false; 4354 mExtendSelection = true; 4355 invalidate(); 4356 } 4357 4358 /** 4359 * @hide pending API council approval. 4360 */ 4361 public boolean selectDialogIsUp() { 4362 return mSelectingText; 4363 } 4364 4365 /** 4366 * @hide pending API council approval. 4367 */ 4368 public void notifySelectDialogDismissed() { 4369 mSelectingText = false; 4370 WebViewCore.resumeUpdatePicture(mWebViewCore); 4371 } 4372 4373 /** 4374 * @hide pending API council approval. 4375 */ 4376 public void selectionDone() { 4377 if (mSelectingText) { 4378 WebChromeClient client = getWebChromeClient(); 4379 if (client != null) client.onSelectionDone(this); 4380 invalidate(); // redraw without selection 4381 notifySelectDialogDismissed(); 4382 } 4383 } 4384 4385 /** 4386 * @hide pending API council approval. 4387 */ 4388 public boolean copySelection() { 4389 boolean copiedSomething = false; 4390 String selection = getSelection(); 4391 if (selection != "") { 4392 if (DebugFlags.WEB_VIEW) { 4393 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4394 } 4395 Toast.makeText(mContext 4396 , com.android.internal.R.string.text_copied 4397 , Toast.LENGTH_SHORT).show(); 4398 copiedSomething = true; 4399 try { 4400 IClipboard clip = IClipboard.Stub.asInterface( 4401 ServiceManager.getService("clipboard")); 4402 clip.setClipboardText(selection); 4403 } catch (android.os.RemoteException e) { 4404 Log.e(LOGTAG, "Clipboard failed", e); 4405 } 4406 } 4407 invalidate(); // remove selection region and pointer 4408 return copiedSomething; 4409 } 4410 4411 /** 4412 * @hide pending API council approval. 4413 */ 4414 public String getSelection() { 4415 if (mNativeClass == 0) return ""; 4416 return nativeGetSelection(); 4417 } 4418 4419 @Override 4420 protected void onAttachedToWindow() { 4421 super.onAttachedToWindow(); 4422 if (hasWindowFocus()) setActive(true); 4423 } 4424 4425 @Override 4426 protected void onDetachedFromWindow() { 4427 clearTextEntry(false); 4428 dismissZoomControl(); 4429 if (hasWindowFocus()) setActive(false); 4430 super.onDetachedFromWindow(); 4431 } 4432 4433 /** 4434 * @deprecated WebView no longer needs to implement 4435 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4436 */ 4437 @Deprecated 4438 public void onChildViewAdded(View parent, View child) {} 4439 4440 /** 4441 * @deprecated WebView no longer needs to implement 4442 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4443 */ 4444 @Deprecated 4445 public void onChildViewRemoved(View p, View child) {} 4446 4447 /** 4448 * @deprecated WebView should not have implemented 4449 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4450 * does nothing now. 4451 */ 4452 @Deprecated 4453 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4454 } 4455 4456 private void setActive(boolean active) { 4457 if (active) { 4458 if (hasFocus()) { 4459 // If our window regained focus, and we have focus, then begin 4460 // drawing the cursor ring 4461 mDrawCursorRing = true; 4462 if (mNativeClass != 0) { 4463 nativeRecordButtons(true, false, true); 4464 if (inEditingMode()) { 4465 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4466 } 4467 } 4468 } else { 4469 // If our window gained focus, but we do not have it, do not 4470 // draw the cursor ring. 4471 mDrawCursorRing = false; 4472 // We do not call nativeRecordButtons here because we assume 4473 // that when we lost focus, or window focus, it got called with 4474 // false for the first parameter 4475 } 4476 } else { 4477 if (mWebViewCore != null && getSettings().getBuiltInZoomControls() 4478 && (mZoomButtonsController == null || 4479 !mZoomButtonsController.isVisible())) { 4480 /* 4481 * The zoom controls come in their own window, so our window 4482 * loses focus. Our policy is to not draw the cursor ring if 4483 * our window is not focused, but this is an exception since 4484 * the user can still navigate the web page with the zoom 4485 * controls showing. 4486 */ 4487 // If our window has lost focus, stop drawing the cursor ring 4488 mDrawCursorRing = false; 4489 } 4490 mGotKeyDown = false; 4491 mShiftIsPressed = false; 4492 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4493 mTouchMode = TOUCH_DONE_MODE; 4494 if (mNativeClass != 0) { 4495 nativeRecordButtons(false, false, true); 4496 } 4497 setFocusControllerInactive(); 4498 } 4499 invalidate(); 4500 } 4501 4502 // To avoid drawing the cursor ring, and remove the TextView when our window 4503 // loses focus. 4504 @Override 4505 public void onWindowFocusChanged(boolean hasWindowFocus) { 4506 setActive(hasWindowFocus); 4507 if (hasWindowFocus) { 4508 BrowserFrame.sJavaBridge.setActiveWebView(this); 4509 } else { 4510 BrowserFrame.sJavaBridge.removeActiveWebView(this); 4511 } 4512 super.onWindowFocusChanged(hasWindowFocus); 4513 } 4514 4515 /* 4516 * Pass a message to WebCore Thread, telling the WebCore::Page's 4517 * FocusController to be "inactive" so that it will 4518 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4519 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4520 */ 4521 /* package */ void setFocusControllerInactive() { 4522 // Do not need to also check whether mWebViewCore is null, because 4523 // mNativeClass is only set if mWebViewCore is non null 4524 if (mNativeClass == 0) return; 4525 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4526 } 4527 4528 @Override 4529 protected void onFocusChanged(boolean focused, int direction, 4530 Rect previouslyFocusedRect) { 4531 if (DebugFlags.WEB_VIEW) { 4532 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4533 } 4534 if (focused) { 4535 // When we regain focus, if we have window focus, resume drawing 4536 // the cursor ring 4537 if (hasWindowFocus()) { 4538 mDrawCursorRing = true; 4539 if (mNativeClass != 0) { 4540 nativeRecordButtons(true, false, true); 4541 } 4542 //} else { 4543 // The WebView has gained focus while we do not have 4544 // windowfocus. When our window lost focus, we should have 4545 // called nativeRecordButtons(false...) 4546 } 4547 } else { 4548 // When we lost focus, unless focus went to the TextView (which is 4549 // true if we are in editing mode), stop drawing the cursor ring. 4550 if (!inEditingMode()) { 4551 mDrawCursorRing = false; 4552 if (mNativeClass != 0) { 4553 nativeRecordButtons(false, false, true); 4554 } 4555 setFocusControllerInactive(); 4556 } 4557 mGotKeyDown = false; 4558 } 4559 4560 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4561 } 4562 4563 /** 4564 * @hide 4565 */ 4566 @Override 4567 protected boolean setFrame(int left, int top, int right, int bottom) { 4568 boolean changed = super.setFrame(left, top, right, bottom); 4569 if (!changed && mHeightCanMeasure) { 4570 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4571 // in WebViewCore after we get the first layout. We do call 4572 // requestLayout() when we get contentSizeChanged(). But the View 4573 // system won't call onSizeChanged if the dimension is not changed. 4574 // In this case, we need to call sendViewSizeZoom() explicitly to 4575 // notify the WebKit about the new dimensions. 4576 sendViewSizeZoom(); 4577 } 4578 return changed; 4579 } 4580 4581 private static class PostScale implements Runnable { 4582 final WebView mWebView; 4583 final boolean mUpdateTextWrap; 4584 4585 public PostScale(WebView webView, boolean updateTextWrap) { 4586 mWebView = webView; 4587 mUpdateTextWrap = updateTextWrap; 4588 } 4589 4590 public void run() { 4591 if (mWebView.mWebViewCore != null) { 4592 // we always force, in case our height changed, in which case we 4593 // still want to send the notification over to webkit. 4594 mWebView.setNewZoomScale(mWebView.mActualScale, 4595 mUpdateTextWrap, true); 4596 // update the zoom buttons as the scale can be changed 4597 if (mWebView.getSettings().getBuiltInZoomControls()) { 4598 mWebView.updateZoomButtonsEnabled(); 4599 } 4600 } 4601 } 4602 } 4603 4604 @Override 4605 protected void onSizeChanged(int w, int h, int ow, int oh) { 4606 super.onSizeChanged(w, h, ow, oh); 4607 // Center zooming to the center of the screen. 4608 if (mZoomScale == 0) { // unless we're already zooming 4609 // To anchor at top left corner. 4610 mZoomCenterX = 0; 4611 mZoomCenterY = getVisibleTitleHeight(); 4612 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4613 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4614 } 4615 4616 // adjust the max viewport width depending on the view dimensions. This 4617 // is to ensure the scaling is not going insane. So do not shrink it if 4618 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4619 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4620 if (newMaxViewportWidth > sMaxViewportWidth) { 4621 sMaxViewportWidth = newMaxViewportWidth; 4622 } 4623 4624 // update mMinZoomScale if the minimum zoom scale is not fixed 4625 if (!mMinZoomScaleFixed) { 4626 // when change from narrow screen to wide screen, the new viewWidth 4627 // can be wider than the old content width. We limit the minimum 4628 // scale to 1.0f. The proper minimum scale will be calculated when 4629 // the new picture shows up. 4630 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4631 / (mDrawHistory ? mHistoryPicture.getWidth() 4632 : mZoomOverviewWidth)); 4633 if (mInitialScaleInPercent > 0) { 4634 // limit the minZoomScale to the initialScale if it is set 4635 float initialScale = mInitialScaleInPercent / 100.0f; 4636 if (mMinZoomScale > initialScale) { 4637 mMinZoomScale = initialScale; 4638 } 4639 } 4640 } 4641 4642 dismissZoomControl(); 4643 4644 // onSizeChanged() is called during WebView layout. And any 4645 // requestLayout() is blocked during layout. As setNewZoomScale() will 4646 // call its child View to reposition itself through ViewManager's 4647 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4648 // <b/> 4649 // only update the text wrap scale if width changed. 4650 post(new PostScale(this, w != ow)); 4651 } 4652 4653 @Override 4654 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4655 super.onScrollChanged(l, t, oldl, oldt); 4656 if (!mInOverScrollMode) { 4657 sendOurVisibleRect(); 4658 // update WebKit if visible title bar height changed. The logic is same 4659 // as getVisibleTitleHeight. 4660 int titleHeight = getTitleHeight(); 4661 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4662 sendViewSizeZoom(); 4663 } 4664 } 4665 } 4666 4667 @Override 4668 public boolean dispatchKeyEvent(KeyEvent event) { 4669 boolean dispatch = true; 4670 4671 // Textfields and plugins need to receive the shift up key even if 4672 // another key was released while the shift key was held down. 4673 if (!inEditingMode() && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 4674 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4675 mGotKeyDown = true; 4676 } else { 4677 if (!mGotKeyDown) { 4678 /* 4679 * We got a key up for which we were not the recipient of 4680 * the original key down. Don't give it to the view. 4681 */ 4682 dispatch = false; 4683 } 4684 mGotKeyDown = false; 4685 } 4686 } 4687 4688 if (dispatch) { 4689 return super.dispatchKeyEvent(event); 4690 } else { 4691 // We didn't dispatch, so let something else handle the key 4692 return false; 4693 } 4694 } 4695 4696 // Here are the snap align logic: 4697 // 1. If it starts nearly horizontally or vertically, snap align; 4698 // 2. If there is a dramitic direction change, let it go; 4699 // 3. If there is a same direction back and forth, lock it. 4700 4701 // adjustable parameters 4702 private int mMinLockSnapReverseDistance; 4703 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4704 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4705 4706 private static int sign(float x) { 4707 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4708 } 4709 4710 // if the page can scroll <= this value, we won't allow the drag tracker 4711 // to have any effect. 4712 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4713 4714 private class DragTrackerHandler { 4715 private final DragTracker mProxy; 4716 private final float mStartY, mStartX; 4717 private final float mMinDY, mMinDX; 4718 private final float mMaxDY, mMaxDX; 4719 private float mCurrStretchY, mCurrStretchX; 4720 private int mSX, mSY; 4721 private Interpolator mInterp; 4722 private float[] mXY = new float[2]; 4723 4724 // inner (non-state) classes can't have enums :( 4725 private static final int DRAGGING_STATE = 0; 4726 private static final int ANIMATING_STATE = 1; 4727 private static final int FINISHED_STATE = 2; 4728 private int mState; 4729 4730 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4731 mProxy = proxy; 4732 4733 int docBottom = computeRealVerticalScrollRange() + getTitleHeight(); 4734 int viewTop = getScrollY(); 4735 int viewBottom = viewTop + getHeight(); 4736 4737 mStartY = y; 4738 mMinDY = -viewTop; 4739 mMaxDY = docBottom - viewBottom; 4740 4741 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4742 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4743 " up/down= " + mMinDY + " " + mMaxDY); 4744 } 4745 4746 int docRight = computeRealHorizontalScrollRange(); 4747 int viewLeft = getScrollX(); 4748 int viewRight = viewLeft + getWidth(); 4749 mStartX = x; 4750 mMinDX = -viewLeft; 4751 mMaxDX = docRight - viewRight; 4752 4753 mState = DRAGGING_STATE; 4754 mProxy.onStartDrag(x, y); 4755 4756 // ensure we buildBitmap at least once 4757 mSX = -99999; 4758 } 4759 4760 private float computeStretch(float delta, float min, float max) { 4761 float stretch = 0; 4762 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4763 if (delta < min) { 4764 stretch = delta - min; 4765 } else if (delta > max) { 4766 stretch = delta - max; 4767 } 4768 } 4769 return stretch; 4770 } 4771 4772 public void dragTo(float x, float y) { 4773 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4774 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4775 4776 if ((mSnapScrollMode & SNAP_X) != 0) { 4777 sy = 0; 4778 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4779 sx = 0; 4780 } 4781 4782 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4783 mCurrStretchX = sx; 4784 mCurrStretchY = sy; 4785 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4786 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4787 " " + sy); 4788 } 4789 if (mProxy.onStretchChange(sx, sy)) { 4790 invalidate(); 4791 } 4792 } 4793 } 4794 4795 public void stopDrag() { 4796 final int DURATION = 200; 4797 int now = (int)SystemClock.uptimeMillis(); 4798 mInterp = new Interpolator(2); 4799 mXY[0] = mCurrStretchX; 4800 mXY[1] = mCurrStretchY; 4801 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4802 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4803 mInterp.setKeyFrame(0, now, mXY, blend); 4804 float[] zerozero = new float[] { 0, 0 }; 4805 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4806 mState = ANIMATING_STATE; 4807 4808 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4809 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4810 } 4811 } 4812 4813 // Call this after each draw. If it ruturns null, the tracker is done 4814 public boolean isFinished() { 4815 return mState == FINISHED_STATE; 4816 } 4817 4818 private int hiddenHeightOfTitleBar() { 4819 return getTitleHeight() - getVisibleTitleHeight(); 4820 } 4821 4822 // need a way to know if 565 or 8888 is the right config for 4823 // capturing the display and giving it to the drag proxy 4824 private Bitmap.Config offscreenBitmapConfig() { 4825 // hard code 565 for now 4826 return Bitmap.Config.RGB_565; 4827 } 4828 4829 /* If the tracker draws, then this returns true, otherwise it will 4830 return false, and draw nothing. 4831 */ 4832 public boolean draw(Canvas canvas) { 4833 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4834 int sx = getScrollX(); 4835 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4836 if (mSX != sx || mSY != sy) { 4837 buildBitmap(sx, sy); 4838 mSX = sx; 4839 mSY = sy; 4840 } 4841 4842 if (mState == ANIMATING_STATE) { 4843 Interpolator.Result result = mInterp.timeToValues(mXY); 4844 if (result == Interpolator.Result.FREEZE_END) { 4845 mState = FINISHED_STATE; 4846 return false; 4847 } else { 4848 mProxy.onStretchChange(mXY[0], mXY[1]); 4849 invalidate(); 4850 // fall through to the draw 4851 } 4852 } 4853 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4854 canvas.translate(sx, sy); 4855 mProxy.onDraw(canvas); 4856 canvas.restoreToCount(count); 4857 return true; 4858 } 4859 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4860 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4861 mCurrStretchX + " " + mCurrStretchY); 4862 } 4863 return false; 4864 } 4865 4866 private void buildBitmap(int sx, int sy) { 4867 int w = getWidth(); 4868 int h = getViewHeight(); 4869 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4870 Canvas canvas = new Canvas(bm); 4871 canvas.translate(-sx, -sy); 4872 drawContent(canvas); 4873 4874 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4875 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4876 " " + sy + " " + w + " " + h); 4877 } 4878 mProxy.onBitmapChange(bm); 4879 } 4880 } 4881 4882 /** @hide */ 4883 public static class DragTracker { 4884 public void onStartDrag(float x, float y) {} 4885 public boolean onStretchChange(float sx, float sy) { 4886 // return true to have us inval the view 4887 return false; 4888 } 4889 public void onStopDrag() {} 4890 public void onBitmapChange(Bitmap bm) {} 4891 public void onDraw(Canvas canvas) {} 4892 } 4893 4894 /** @hide */ 4895 public DragTracker getDragTracker() { 4896 return mDragTracker; 4897 } 4898 4899 /** @hide */ 4900 public void setDragTracker(DragTracker tracker) { 4901 mDragTracker = tracker; 4902 } 4903 4904 private DragTracker mDragTracker; 4905 private DragTrackerHandler mDragTrackerHandler; 4906 4907 private class ScaleDetectorListener implements 4908 ScaleGestureDetector.OnScaleGestureListener { 4909 4910 public boolean onScaleBegin(ScaleGestureDetector detector) { 4911 // cancel the single touch handling 4912 cancelTouch(); 4913 dismissZoomControl(); 4914 // reset the zoom overview mode so that the page won't auto grow 4915 mInZoomOverview = false; 4916 // If it is in password mode, turn it off so it does not draw 4917 // misplaced. 4918 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4919 mWebTextView.setInPassword(false); 4920 } 4921 4922 mViewManager.startZoom(); 4923 4924 return true; 4925 } 4926 4927 public void onScaleEnd(ScaleGestureDetector detector) { 4928 if (mPreviewZoomOnly) { 4929 mPreviewZoomOnly = false; 4930 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4931 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4932 // don't reflow when zoom in; when zoom out, do reflow if the 4933 // new scale is almost minimum scale; 4934 boolean reflowNow = (mActualScale - mMinZoomScale 4935 <= MINIMUM_SCALE_INCREMENT) 4936 || ((mActualScale <= 0.8 * mTextWrapScale)); 4937 // force zoom after mPreviewZoomOnly is set to false so that the 4938 // new view size will be passed to the WebKit 4939 setNewZoomScale(mActualScale, reflowNow, true); 4940 // call invalidate() to draw without zoom filter 4941 invalidate(); 4942 } 4943 // adjust the edit text view if needed 4944 if (inEditingMode() && didUpdateTextViewBounds(false) 4945 && nativeFocusCandidateIsPassword()) { 4946 // If it is a password field, start drawing the 4947 // WebTextView once again. 4948 mWebTextView.setInPassword(true); 4949 } 4950 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4951 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4952 // may trigger the unwanted fling. 4953 mTouchMode = TOUCH_PINCH_DRAG; 4954 mConfirmMove = true; 4955 startTouch(detector.getFocusX(), detector.getFocusY(), 4956 mLastTouchTime); 4957 4958 mViewManager.endZoom(); 4959 } 4960 4961 public boolean onScale(ScaleGestureDetector detector) { 4962 float scale = (float) (Math.round(detector.getScaleFactor() 4963 * mActualScale * 100) / 100.0); 4964 if (Math.abs(scale - mActualScale) >= MINIMUM_SCALE_INCREMENT) { 4965 mPreviewZoomOnly = true; 4966 // limit the scale change per step 4967 if (scale > mActualScale) { 4968 scale = Math.min(scale, mActualScale * 1.25f); 4969 } else { 4970 scale = Math.max(scale, mActualScale * 0.8f); 4971 } 4972 mZoomCenterX = detector.getFocusX(); 4973 mZoomCenterY = detector.getFocusY(); 4974 setNewZoomScale(scale, false, false); 4975 invalidate(); 4976 return true; 4977 } 4978 return false; 4979 } 4980 } 4981 4982 private boolean hitFocusedPlugin(int contentX, int contentY) { 4983 if (DebugFlags.WEB_VIEW) { 4984 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4985 Rect r = nativeFocusNodeBounds(); 4986 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4987 + ", " + r.right + ", " + r.bottom + ")"); 4988 } 4989 return nativeFocusIsPlugin() 4990 && nativeFocusNodeBounds().contains(contentX, contentY); 4991 } 4992 4993 private boolean shouldForwardTouchEvent() { 4994 return mFullScreenHolder != null || (mForwardTouchEvents 4995 && !mSelectingText 4996 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4997 } 4998 4999 private boolean inFullScreenMode() { 5000 return mFullScreenHolder != null; 5001 } 5002 5003 @Override 5004 public boolean onTouchEvent(MotionEvent ev) { 5005 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 5006 return false; 5007 } 5008 5009 if (DebugFlags.WEB_VIEW) { 5010 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 5011 + mTouchMode); 5012 } 5013 5014 int action; 5015 float x, y; 5016 long eventTime = ev.getEventTime(); 5017 5018 // FIXME: we may consider to give WebKit an option to handle multi-touch 5019 // events later. 5020 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 5021 if (mMinZoomScale < mMaxZoomScale) { 5022 mScaleDetector.onTouchEvent(ev); 5023 if (mScaleDetector.isInProgress()) { 5024 mLastTouchTime = eventTime; 5025 return true; 5026 } 5027 x = mScaleDetector.getFocusX(); 5028 y = mScaleDetector.getFocusY(); 5029 action = ev.getAction() & MotionEvent.ACTION_MASK; 5030 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5031 cancelTouch(); 5032 action = MotionEvent.ACTION_DOWN; 5033 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5034 // set mLastTouchX/Y to the remaining point 5035 mLastTouchX = x; 5036 mLastTouchY = y; 5037 } else if (action == MotionEvent.ACTION_MOVE) { 5038 // negative x or y indicate it is on the edge, skip it. 5039 if (x < 0 || y < 0) { 5040 return true; 5041 } 5042 } 5043 } else { 5044 // if the page disallow zoom, skip multi-pointer action 5045 return true; 5046 } 5047 } else { 5048 action = ev.getAction(); 5049 x = ev.getX(); 5050 y = ev.getY(); 5051 } 5052 5053 // Due to the touch screen edge effect, a touch closer to the edge 5054 // always snapped to the edge. As getViewWidth() can be different from 5055 // getWidth() due to the scrollbar, adjusting the point to match 5056 // getViewWidth(). Same applied to the height. 5057 if (x > getViewWidth() - 1) { 5058 x = getViewWidth() - 1; 5059 } 5060 if (y > getViewHeightWithTitle() - 1) { 5061 y = getViewHeightWithTitle() - 1; 5062 } 5063 5064 float fDeltaX = mLastTouchX - x; 5065 float fDeltaY = mLastTouchY - y; 5066 int deltaX = (int) fDeltaX; 5067 int deltaY = (int) fDeltaY; 5068 int contentX = viewToContentX((int) x + mScrollX); 5069 int contentY = viewToContentY((int) y + mScrollY); 5070 5071 switch (action) { 5072 case MotionEvent.ACTION_DOWN: { 5073 mPreventDefault = PREVENT_DEFAULT_NO; 5074 mConfirmMove = false; 5075 if (!mScroller.isFinished()) { 5076 // stop the current scroll animation, but if this is 5077 // the start of a fling, allow it to add to the current 5078 // fling's velocity 5079 mScroller.abortAnimation(); 5080 mTouchMode = TOUCH_DRAG_START_MODE; 5081 mConfirmMove = true; 5082 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5083 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5084 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5085 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5086 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5087 } else { 5088 // commit the short press action for the previous tap 5089 doShortPress(); 5090 mTouchMode = TOUCH_INIT_MODE; 5091 mDeferTouchProcess = (!inFullScreenMode() 5092 && mForwardTouchEvents) ? hitFocusedPlugin( 5093 contentX, contentY) : false; 5094 } 5095 } else { // the normal case 5096 mPreviewZoomOnly = false; 5097 mTouchMode = TOUCH_INIT_MODE; 5098 mDeferTouchProcess = (!inFullScreenMode() 5099 && mForwardTouchEvents) ? hitFocusedPlugin( 5100 contentX, contentY) : false; 5101 mWebViewCore.sendMessage( 5102 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5103 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5104 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5105 (eventTime - mLastTouchUpTime), eventTime); 5106 } 5107 if (mSelectingText) { 5108 mDrawSelectionPointer = false; 5109 mSelectionStarted = nativeStartSelection(contentX, contentY); 5110 if (DebugFlags.WEB_VIEW) { 5111 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5112 } 5113 invalidate(); 5114 } 5115 } 5116 // Trigger the link 5117 if (mTouchMode == TOUCH_INIT_MODE 5118 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5119 mPrivateHandler.sendEmptyMessageDelayed( 5120 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5121 mPrivateHandler.sendEmptyMessageDelayed( 5122 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5123 if (inFullScreenMode() || mDeferTouchProcess) { 5124 mPreventDefault = PREVENT_DEFAULT_YES; 5125 } else if (mForwardTouchEvents) { 5126 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5127 } else { 5128 mPreventDefault = PREVENT_DEFAULT_NO; 5129 } 5130 // pass the touch events from UI thread to WebCore thread 5131 if (shouldForwardTouchEvent()) { 5132 TouchEventData ted = new TouchEventData(); 5133 ted.mAction = action; 5134 ted.mX = contentX; 5135 ted.mY = contentY; 5136 ted.mMetaState = ev.getMetaState(); 5137 ted.mReprocess = mDeferTouchProcess; 5138 if (mDeferTouchProcess) { 5139 // still needs to set them for compute deltaX/Y 5140 mLastTouchX = x; 5141 mLastTouchY = y; 5142 ted.mViewX = x; 5143 ted.mViewY = y; 5144 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5145 break; 5146 } 5147 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5148 if (!inFullScreenMode()) { 5149 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5150 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5151 action, 0), TAP_TIMEOUT); 5152 } 5153 } 5154 } 5155 startTouch(x, y, eventTime); 5156 break; 5157 } 5158 case MotionEvent.ACTION_MOVE: { 5159 boolean firstMove = false; 5160 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5161 >= mTouchSlopSquare) { 5162 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5163 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5164 mConfirmMove = true; 5165 firstMove = true; 5166 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5167 mTouchMode = TOUCH_INIT_MODE; 5168 } 5169 } 5170 // pass the touch events from UI thread to WebCore thread 5171 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5172 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5173 mLastSentTouchTime = eventTime; 5174 TouchEventData ted = new TouchEventData(); 5175 ted.mAction = action; 5176 ted.mX = contentX; 5177 ted.mY = contentY; 5178 ted.mMetaState = ev.getMetaState(); 5179 ted.mReprocess = mDeferTouchProcess; 5180 if (mDeferTouchProcess) { 5181 ted.mViewX = x; 5182 ted.mViewY = y; 5183 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5184 break; 5185 } 5186 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5187 if (firstMove && !inFullScreenMode()) { 5188 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5189 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5190 action, 0), TAP_TIMEOUT); 5191 } 5192 } 5193 if (mTouchMode == TOUCH_DONE_MODE 5194 || mPreventDefault == PREVENT_DEFAULT_YES) { 5195 // no dragging during scroll zoom animation, or when prevent 5196 // default is yes 5197 break; 5198 } 5199 if (mVelocityTracker == null) { 5200 Log.e(LOGTAG, "Got null mVelocityTracker when " 5201 + "mPreventDefault = " + mPreventDefault 5202 + " mDeferTouchProcess = " + mDeferTouchProcess 5203 + " mTouchMode = " + mTouchMode); 5204 } 5205 mVelocityTracker.addMovement(ev); 5206 if (mSelectingText && mSelectionStarted) { 5207 if (DebugFlags.WEB_VIEW) { 5208 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5209 } 5210 nativeExtendSelection(contentX, contentY); 5211 invalidate(); 5212 break; 5213 } 5214 5215 if (mTouchMode != TOUCH_DRAG_MODE) { 5216 5217 if (!mConfirmMove) { 5218 break; 5219 } 5220 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5221 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5222 // track mLastTouchTime as we may need to do fling at 5223 // ACTION_UP 5224 mLastTouchTime = eventTime; 5225 break; 5226 } 5227 // if it starts nearly horizontal or vertical, enforce it 5228 int ax = Math.abs(deltaX); 5229 int ay = Math.abs(deltaY); 5230 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5231 mSnapScrollMode = SNAP_X; 5232 mSnapPositive = deltaX > 0; 5233 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5234 mSnapScrollMode = SNAP_Y; 5235 mSnapPositive = deltaY > 0; 5236 } 5237 5238 mTouchMode = TOUCH_DRAG_MODE; 5239 mLastTouchX = x; 5240 mLastTouchY = y; 5241 fDeltaX = 0.0f; 5242 fDeltaY = 0.0f; 5243 deltaX = 0; 5244 deltaY = 0; 5245 5246 startDrag(); 5247 } 5248 5249 if (mDragTrackerHandler != null) { 5250 mDragTrackerHandler.dragTo(x, y); 5251 } 5252 5253 // do pan 5254 boolean done = false; 5255 boolean keepScrollBarsVisible = false; 5256 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5257 mLastTouchX = x; 5258 mLastTouchY = y; 5259 keepScrollBarsVisible = done = true; 5260 } else { 5261 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5262 int ax = Math.abs(deltaX); 5263 int ay = Math.abs(deltaY); 5264 if (mSnapScrollMode == SNAP_X) { 5265 // radical change means getting out of snap mode 5266 if (ay > MAX_SLOPE_FOR_DIAG * ax 5267 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5268 mSnapScrollMode = SNAP_NONE; 5269 } 5270 // reverse direction means lock in the snap mode 5271 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5272 (mSnapPositive 5273 ? deltaX < -mMinLockSnapReverseDistance 5274 : deltaX > mMinLockSnapReverseDistance)) { 5275 mSnapScrollMode |= SNAP_LOCK; 5276 } 5277 } else { 5278 // radical change means getting out of snap mode 5279 if (ax > MAX_SLOPE_FOR_DIAG * ay 5280 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5281 mSnapScrollMode = SNAP_NONE; 5282 } 5283 // reverse direction means lock in the snap mode 5284 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5285 (mSnapPositive 5286 ? deltaY < -mMinLockSnapReverseDistance 5287 : deltaY > mMinLockSnapReverseDistance)) { 5288 mSnapScrollMode |= SNAP_LOCK; 5289 } 5290 } 5291 } 5292 if (mSnapScrollMode != SNAP_NONE) { 5293 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5294 deltaY = 0; 5295 } else { 5296 deltaX = 0; 5297 } 5298 } 5299 if ((deltaX | deltaY) != 0) { 5300 if (deltaX != 0) { 5301 mLastTouchX = x; 5302 } 5303 if (deltaY != 0) { 5304 mLastTouchY = y; 5305 } 5306 mHeldMotionless = MOTIONLESS_FALSE; 5307 } else { 5308 // keep the scrollbar on the screen even there is no 5309 // scroll 5310 mLastTouchX = x; 5311 mLastTouchY = y; 5312 keepScrollBarsVisible = true; 5313 } 5314 mLastTouchTime = eventTime; 5315 mUserScroll = true; 5316 } 5317 5318 doDrag(deltaX, deltaY); 5319 5320 if (keepScrollBarsVisible) { 5321 if (mHeldMotionless != MOTIONLESS_TRUE) { 5322 mHeldMotionless = MOTIONLESS_TRUE; 5323 invalidate(); 5324 } 5325 // keep the scrollbar on the screen even there is no scroll 5326 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5327 false); 5328 // return false to indicate that we can't pan out of the 5329 // view space 5330 return !done; 5331 } 5332 break; 5333 } 5334 case MotionEvent.ACTION_UP: { 5335 // pass the touch events from UI thread to WebCore thread 5336 if (shouldForwardTouchEvent()) { 5337 TouchEventData ted = new TouchEventData(); 5338 ted.mAction = action; 5339 ted.mX = contentX; 5340 ted.mY = contentY; 5341 ted.mMetaState = ev.getMetaState(); 5342 ted.mReprocess = mDeferTouchProcess; 5343 if (mDeferTouchProcess) { 5344 ted.mViewX = x; 5345 ted.mViewY = y; 5346 } 5347 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5348 } 5349 mLastTouchUpTime = eventTime; 5350 switch (mTouchMode) { 5351 case TOUCH_DOUBLE_TAP_MODE: // double tap 5352 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5353 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5354 if (inFullScreenMode() || mDeferTouchProcess) { 5355 TouchEventData ted = new TouchEventData(); 5356 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5357 ted.mX = contentX; 5358 ted.mY = contentY; 5359 ted.mMetaState = ev.getMetaState(); 5360 ted.mReprocess = mDeferTouchProcess; 5361 if (mDeferTouchProcess) { 5362 ted.mViewX = x; 5363 ted.mViewY = y; 5364 } 5365 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5366 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5367 doDoubleTap(); 5368 mTouchMode = TOUCH_DONE_MODE; 5369 } 5370 break; 5371 case TOUCH_INIT_MODE: // tap 5372 case TOUCH_SHORTPRESS_START_MODE: 5373 case TOUCH_SHORTPRESS_MODE: 5374 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5375 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5376 if (mConfirmMove) { 5377 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5378 " WebCore's response for touch down."); 5379 if (mPreventDefault != PREVENT_DEFAULT_YES 5380 && (computeMaxScrollX() > 0 5381 || computeMaxScrollY() > 0)) { 5382 // UI takes control back, cancel WebCore touch 5383 cancelWebCoreTouchEvent(contentX, contentY, 5384 true); 5385 // we will not rewrite drag code here, but we 5386 // will try fling if it applies. 5387 WebViewCore.reducePriority(); 5388 // to get better performance, pause updating the 5389 // picture 5390 WebViewCore.pauseUpdatePicture(mWebViewCore); 5391 // fall through to TOUCH_DRAG_MODE 5392 } else { 5393 // WebKit may consume the touch event and modify 5394 // DOM. drawContentPicture() will be called with 5395 // animateSroll as true for better performance. 5396 // Force redraw in high-quality. 5397 invalidate(); 5398 break; 5399 } 5400 } else { 5401 if (mSelectingText) { 5402 if (nativeHitSelection(contentX, contentY)) { 5403 copySelection(); 5404 } 5405 selectionDone(); 5406 break; 5407 } 5408 if (mTouchMode == TOUCH_INIT_MODE) { 5409 mPrivateHandler.sendEmptyMessageDelayed( 5410 RELEASE_SINGLE_TAP, ViewConfiguration 5411 .getDoubleTapTimeout()); 5412 } else { 5413 doShortPress(); 5414 } 5415 break; 5416 } 5417 case TOUCH_DRAG_MODE: 5418 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5419 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5420 // if the user waits a while w/o moving before the 5421 // up, we don't want to do a fling 5422 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5423 if (mVelocityTracker == null) { 5424 Log.e(LOGTAG, "Got null mVelocityTracker when " 5425 + "mPreventDefault = " 5426 + mPreventDefault 5427 + " mDeferTouchProcess = " 5428 + mDeferTouchProcess); 5429 } 5430 mVelocityTracker.addMovement(ev); 5431 // set to MOTIONLESS_IGNORE so that it won't keep 5432 // removing and sending message in 5433 // drawCoreAndCursorRing() 5434 mHeldMotionless = MOTIONLESS_IGNORE; 5435 doFling(); 5436 break; 5437 } else { 5438 if (mScroller.springback(mScrollX, mScrollY, 0, 5439 computeMaxScrollX(), 0, 5440 computeMaxScrollY())) { 5441 invalidate(); 5442 } 5443 } 5444 // redraw in high-quality, as we're done dragging 5445 mHeldMotionless = MOTIONLESS_TRUE; 5446 invalidate(); 5447 // fall through 5448 case TOUCH_DRAG_START_MODE: 5449 // TOUCH_DRAG_START_MODE should not happen for the real 5450 // device as we almost certain will get a MOVE. But this 5451 // is possible on emulator. 5452 mLastVelocity = 0; 5453 WebViewCore.resumePriority(); 5454 WebViewCore.resumeUpdatePicture(mWebViewCore); 5455 break; 5456 } 5457 stopTouch(); 5458 break; 5459 } 5460 case MotionEvent.ACTION_CANCEL: { 5461 if (mTouchMode == TOUCH_DRAG_MODE) { 5462 mScroller.springback(mScrollX, mScrollY, 0, 5463 computeMaxScrollX(), 0, computeMaxScrollY()); 5464 invalidate(); 5465 } 5466 cancelWebCoreTouchEvent(contentX, contentY, false); 5467 cancelTouch(); 5468 break; 5469 } 5470 } 5471 return true; 5472 } 5473 5474 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5475 if (shouldForwardTouchEvent()) { 5476 if (removeEvents) { 5477 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5478 } 5479 TouchEventData ted = new TouchEventData(); 5480 ted.mX = x; 5481 ted.mY = y; 5482 ted.mAction = MotionEvent.ACTION_CANCEL; 5483 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5484 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5485 } 5486 } 5487 5488 private void startTouch(float x, float y, long eventTime) { 5489 // Remember where the motion event started 5490 mLastTouchX = x; 5491 mLastTouchY = y; 5492 mLastTouchTime = eventTime; 5493 mVelocityTracker = VelocityTracker.obtain(); 5494 mSnapScrollMode = SNAP_NONE; 5495 if (mDragTracker != null) { 5496 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5497 } 5498 } 5499 5500 private void startDrag() { 5501 WebViewCore.reducePriority(); 5502 // to get better performance, pause updating the picture 5503 WebViewCore.pauseUpdatePicture(mWebViewCore); 5504 if (!mDragFromTextInput) { 5505 nativeHideCursor(); 5506 } 5507 WebSettings settings = getSettings(); 5508 if (settings.supportZoom() 5509 && settings.getBuiltInZoomControls() 5510 && !getZoomButtonsController().isVisible() 5511 && mMinZoomScale < mMaxZoomScale 5512 && (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5513 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF)) { 5514 mZoomButtonsController.setVisible(true); 5515 int count = settings.getDoubleTapToastCount(); 5516 if (mInZoomOverview && count > 0) { 5517 settings.setDoubleTapToastCount(--count); 5518 Toast.makeText(mContext, 5519 com.android.internal.R.string.double_tap_toast, 5520 Toast.LENGTH_LONG).show(); 5521 } 5522 } 5523 } 5524 5525 private void doDrag(int deltaX, int deltaY) { 5526 if ((deltaX | deltaY) != 0) { 5527 final int oldX = mScrollX; 5528 final int oldY = mScrollY; 5529 final int rangeX = computeMaxScrollX(); 5530 final int rangeY = computeMaxScrollY(); 5531 overscrollBy(deltaX, deltaY, oldX, oldY, 5532 rangeX, rangeY, 5533 mOverscrollDistance, mOverscrollDistance, true); 5534 5535 if (mEdgeGlowTop != null) { 5536 // Don't show left/right glows if we fit the whole content. 5537 if (rangeX > 0) { 5538 final int pulledToX = oldX + deltaX; 5539 if (pulledToX < 0) { 5540 mEdgeGlowLeft.onPull((float) deltaX / getWidth()); 5541 } else if (pulledToX > rangeX) { 5542 mEdgeGlowRight.onPull((float) deltaX / getWidth()); 5543 } 5544 } 5545 5546 if (rangeY > 0 || getOverscrollMode() == OVERSCROLL_ALWAYS) { 5547 final int pulledToY = oldY + deltaY; 5548 if (pulledToY < 0) { 5549 mEdgeGlowTop.onPull((float) deltaY / getHeight()); 5550 } else if (pulledToY > rangeY) { 5551 mEdgeGlowBottom.onPull((float) deltaY / getHeight()); 5552 } 5553 } 5554 } 5555 } 5556 if (!getSettings().getBuiltInZoomControls()) { 5557 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 5558 if (mZoomControls != null && showPlusMinus) { 5559 if (mZoomControls.getVisibility() == View.VISIBLE) { 5560 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5561 } else { 5562 mZoomControls.show(showPlusMinus, false); 5563 } 5564 mPrivateHandler.postDelayed(mZoomControlRunnable, 5565 ZOOM_CONTROLS_TIMEOUT); 5566 } 5567 } 5568 } 5569 5570 private void stopTouch() { 5571 if (mDragTrackerHandler != null) { 5572 mDragTrackerHandler.stopDrag(); 5573 } 5574 // we also use mVelocityTracker == null to tell us that we are 5575 // not "moving around", so we can take the slower/prettier 5576 // mode in the drawing code 5577 if (mVelocityTracker != null) { 5578 mVelocityTracker.recycle(); 5579 mVelocityTracker = null; 5580 } 5581 5582 // Release any pulled glows 5583 if (mEdgeGlowTop != null) { 5584 mEdgeGlowTop.onRelease(); 5585 mEdgeGlowBottom.onRelease(); 5586 mEdgeGlowLeft.onRelease(); 5587 mEdgeGlowRight.onRelease(); 5588 } 5589 } 5590 5591 private void cancelTouch() { 5592 if (mDragTrackerHandler != null) { 5593 mDragTrackerHandler.stopDrag(); 5594 } 5595 // we also use mVelocityTracker == null to tell us that we are 5596 // not "moving around", so we can take the slower/prettier 5597 // mode in the drawing code 5598 if (mVelocityTracker != null) { 5599 mVelocityTracker.recycle(); 5600 mVelocityTracker = null; 5601 } 5602 5603 // Release any pulled glows 5604 if (mEdgeGlowTop != null) { 5605 mEdgeGlowTop.onRelease(); 5606 mEdgeGlowBottom.onRelease(); 5607 mEdgeGlowLeft.onRelease(); 5608 mEdgeGlowRight.onRelease(); 5609 } 5610 5611 if (mTouchMode == TOUCH_DRAG_MODE) { 5612 WebViewCore.resumePriority(); 5613 WebViewCore.resumeUpdatePicture(mWebViewCore); 5614 } 5615 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5616 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5617 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5618 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5619 mHeldMotionless = MOTIONLESS_TRUE; 5620 mTouchMode = TOUCH_DONE_MODE; 5621 nativeHideCursor(); 5622 } 5623 5624 private long mTrackballFirstTime = 0; 5625 private long mTrackballLastTime = 0; 5626 private float mTrackballRemainsX = 0.0f; 5627 private float mTrackballRemainsY = 0.0f; 5628 private int mTrackballXMove = 0; 5629 private int mTrackballYMove = 0; 5630 private boolean mSelectingText = false; 5631 private boolean mSelectionStarted = false; 5632 private boolean mExtendSelection = false; 5633 private boolean mDrawSelectionPointer = false; 5634 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5635 private static final int TRACKBALL_TIMEOUT = 200; 5636 private static final int TRACKBALL_WAIT = 100; 5637 private static final int TRACKBALL_SCALE = 400; 5638 private static final int TRACKBALL_SCROLL_COUNT = 5; 5639 private static final int TRACKBALL_MOVE_COUNT = 10; 5640 private static final int TRACKBALL_MULTIPLIER = 3; 5641 private static final int SELECT_CURSOR_OFFSET = 16; 5642 private int mSelectX = 0; 5643 private int mSelectY = 0; 5644 private boolean mFocusSizeChanged = false; 5645 private boolean mShiftIsPressed = false; 5646 private boolean mTrackballDown = false; 5647 private long mTrackballUpTime = 0; 5648 private long mLastCursorTime = 0; 5649 private Rect mLastCursorBounds; 5650 5651 // Set by default; BrowserActivity clears to interpret trackball data 5652 // directly for movement. Currently, the framework only passes 5653 // arrow key events, not trackball events, from one child to the next 5654 private boolean mMapTrackballToArrowKeys = true; 5655 5656 public void setMapTrackballToArrowKeys(boolean setMap) { 5657 mMapTrackballToArrowKeys = setMap; 5658 } 5659 5660 void resetTrackballTime() { 5661 mTrackballLastTime = 0; 5662 } 5663 5664 @Override 5665 public boolean onTrackballEvent(MotionEvent ev) { 5666 long time = ev.getEventTime(); 5667 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5668 if (ev.getY() > 0) pageDown(true); 5669 if (ev.getY() < 0) pageUp(true); 5670 return true; 5671 } 5672 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5673 if (mSelectingText) { 5674 return true; // discard press if copy in progress 5675 } 5676 mTrackballDown = true; 5677 if (mNativeClass == 0) { 5678 return false; 5679 } 5680 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5681 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5682 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5683 nativeSelectBestAt(mLastCursorBounds); 5684 } 5685 if (DebugFlags.WEB_VIEW) { 5686 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5687 + " time=" + time 5688 + " mLastCursorTime=" + mLastCursorTime); 5689 } 5690 if (isInTouchMode()) requestFocusFromTouch(); 5691 return false; // let common code in onKeyDown at it 5692 } 5693 if (ev.getAction() == MotionEvent.ACTION_UP) { 5694 // LONG_PRESS_CENTER is set in common onKeyDown 5695 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5696 mTrackballDown = false; 5697 mTrackballUpTime = time; 5698 if (mSelectingText) { 5699 if (mExtendSelection) { 5700 copySelection(); 5701 selectionDone(); 5702 } else { 5703 mExtendSelection = true; 5704 nativeSetExtendSelection(); 5705 invalidate(); // draw the i-beam instead of the arrow 5706 } 5707 return true; // discard press if copy in progress 5708 } 5709 if (DebugFlags.WEB_VIEW) { 5710 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5711 + " time=" + time 5712 ); 5713 } 5714 return false; // let common code in onKeyUp at it 5715 } 5716 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5717 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5718 return false; 5719 } 5720 if (mTrackballDown) { 5721 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5722 return true; // discard move if trackball is down 5723 } 5724 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5725 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5726 return true; 5727 } 5728 // TODO: alternatively we can do panning as touch does 5729 switchOutDrawHistory(); 5730 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5731 if (DebugFlags.WEB_VIEW) { 5732 Log.v(LOGTAG, "onTrackballEvent time=" 5733 + time + " last=" + mTrackballLastTime); 5734 } 5735 mTrackballFirstTime = time; 5736 mTrackballXMove = mTrackballYMove = 0; 5737 } 5738 mTrackballLastTime = time; 5739 if (DebugFlags.WEB_VIEW) { 5740 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5741 } 5742 mTrackballRemainsX += ev.getX(); 5743 mTrackballRemainsY += ev.getY(); 5744 doTrackball(time); 5745 return true; 5746 } 5747 5748 void moveSelection(float xRate, float yRate) { 5749 if (mNativeClass == 0) 5750 return; 5751 int width = getViewWidth(); 5752 int height = getViewHeight(); 5753 mSelectX += xRate; 5754 mSelectY += yRate; 5755 int maxX = width + mScrollX; 5756 int maxY = height + mScrollY; 5757 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5758 , mSelectX)); 5759 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5760 , mSelectY)); 5761 if (DebugFlags.WEB_VIEW) { 5762 Log.v(LOGTAG, "moveSelection" 5763 + " mSelectX=" + mSelectX 5764 + " mSelectY=" + mSelectY 5765 + " mScrollX=" + mScrollX 5766 + " mScrollY=" + mScrollY 5767 + " xRate=" + xRate 5768 + " yRate=" + yRate 5769 ); 5770 } 5771 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5772 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5773 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5774 : 0; 5775 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5776 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5777 : 0; 5778 pinScrollBy(scrollX, scrollY, true, 0); 5779 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5780 requestRectangleOnScreen(select); 5781 invalidate(); 5782 } 5783 5784 private int scaleTrackballX(float xRate, int width) { 5785 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5786 int nextXMove = xMove; 5787 if (xMove > 0) { 5788 if (xMove > mTrackballXMove) { 5789 xMove -= mTrackballXMove; 5790 } 5791 } else if (xMove < mTrackballXMove) { 5792 xMove -= mTrackballXMove; 5793 } 5794 mTrackballXMove = nextXMove; 5795 return xMove; 5796 } 5797 5798 private int scaleTrackballY(float yRate, int height) { 5799 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5800 int nextYMove = yMove; 5801 if (yMove > 0) { 5802 if (yMove > mTrackballYMove) { 5803 yMove -= mTrackballYMove; 5804 } 5805 } else if (yMove < mTrackballYMove) { 5806 yMove -= mTrackballYMove; 5807 } 5808 mTrackballYMove = nextYMove; 5809 return yMove; 5810 } 5811 5812 private int keyCodeToSoundsEffect(int keyCode) { 5813 switch(keyCode) { 5814 case KeyEvent.KEYCODE_DPAD_UP: 5815 return SoundEffectConstants.NAVIGATION_UP; 5816 case KeyEvent.KEYCODE_DPAD_RIGHT: 5817 return SoundEffectConstants.NAVIGATION_RIGHT; 5818 case KeyEvent.KEYCODE_DPAD_DOWN: 5819 return SoundEffectConstants.NAVIGATION_DOWN; 5820 case KeyEvent.KEYCODE_DPAD_LEFT: 5821 return SoundEffectConstants.NAVIGATION_LEFT; 5822 } 5823 throw new IllegalArgumentException("keyCode must be one of " + 5824 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5825 "KEYCODE_DPAD_LEFT}."); 5826 } 5827 5828 private void doTrackball(long time) { 5829 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5830 if (elapsed == 0) { 5831 elapsed = TRACKBALL_TIMEOUT; 5832 } 5833 float xRate = mTrackballRemainsX * 1000 / elapsed; 5834 float yRate = mTrackballRemainsY * 1000 / elapsed; 5835 int viewWidth = getViewWidth(); 5836 int viewHeight = getViewHeight(); 5837 if (mSelectingText) { 5838 if (!mDrawSelectionPointer) { 5839 // The last selection was made by touch, disabling drawing the 5840 // selection pointer. Allow the trackball to adjust the 5841 // position of the touch control. 5842 mSelectX = contentToViewX(nativeSelectionX()); 5843 mSelectY = contentToViewY(nativeSelectionY()); 5844 mDrawSelectionPointer = mExtendSelection = true; 5845 nativeSetExtendSelection(); 5846 } 5847 moveSelection(scaleTrackballX(xRate, viewWidth), 5848 scaleTrackballY(yRate, viewHeight)); 5849 mTrackballRemainsX = mTrackballRemainsY = 0; 5850 return; 5851 } 5852 float ax = Math.abs(xRate); 5853 float ay = Math.abs(yRate); 5854 float maxA = Math.max(ax, ay); 5855 if (DebugFlags.WEB_VIEW) { 5856 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5857 + " xRate=" + xRate 5858 + " yRate=" + yRate 5859 + " mTrackballRemainsX=" + mTrackballRemainsX 5860 + " mTrackballRemainsY=" + mTrackballRemainsY); 5861 } 5862 int width = mContentWidth - viewWidth; 5863 int height = mContentHeight - viewHeight; 5864 if (width < 0) width = 0; 5865 if (height < 0) height = 0; 5866 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5867 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5868 maxA = Math.max(ax, ay); 5869 int count = Math.max(0, (int) maxA); 5870 int oldScrollX = mScrollX; 5871 int oldScrollY = mScrollY; 5872 if (count > 0) { 5873 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5874 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5875 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5876 KeyEvent.KEYCODE_DPAD_RIGHT; 5877 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5878 if (DebugFlags.WEB_VIEW) { 5879 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5880 + " count=" + count 5881 + " mTrackballRemainsX=" + mTrackballRemainsX 5882 + " mTrackballRemainsY=" + mTrackballRemainsY); 5883 } 5884 if (mNativeClass != 0 && nativeFocusIsPlugin()) { 5885 for (int i = 0; i < count; i++) { 5886 letPluginHandleNavKey(selectKeyCode, time, true); 5887 } 5888 letPluginHandleNavKey(selectKeyCode, time, false); 5889 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5890 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5891 } 5892 mTrackballRemainsX = mTrackballRemainsY = 0; 5893 } 5894 if (count >= TRACKBALL_SCROLL_COUNT) { 5895 int xMove = scaleTrackballX(xRate, width); 5896 int yMove = scaleTrackballY(yRate, height); 5897 if (DebugFlags.WEB_VIEW) { 5898 Log.v(LOGTAG, "doTrackball pinScrollBy" 5899 + " count=" + count 5900 + " xMove=" + xMove + " yMove=" + yMove 5901 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5902 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5903 ); 5904 } 5905 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5906 xMove = 0; 5907 } 5908 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5909 yMove = 0; 5910 } 5911 if (xMove != 0 || yMove != 0) { 5912 pinScrollBy(xMove, yMove, true, 0); 5913 } 5914 mUserScroll = true; 5915 } 5916 } 5917 5918 private int computeMaxScrollX() { 5919 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 5920 } 5921 5922 private int computeMaxScrollY() { 5923 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 5924 - getViewHeightWithTitle(), 0); 5925 } 5926 5927 public void flingScroll(int vx, int vy) { 5928 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5929 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 5930 invalidate(); 5931 } 5932 5933 private void doFling() { 5934 if (mVelocityTracker == null) { 5935 return; 5936 } 5937 int maxX = computeMaxScrollX(); 5938 int maxY = computeMaxScrollY(); 5939 5940 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5941 int vx = (int) mVelocityTracker.getXVelocity(); 5942 int vy = (int) mVelocityTracker.getYVelocity(); 5943 5944 if (mSnapScrollMode != SNAP_NONE) { 5945 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5946 vy = 0; 5947 } else { 5948 vx = 0; 5949 } 5950 } 5951 if (true /* EMG release: make our fling more like Maps' */) { 5952 // maps cuts their velocity in half 5953 vx = vx * 3 / 4; 5954 vy = vy * 3 / 4; 5955 } 5956 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5957 WebViewCore.resumePriority(); 5958 WebViewCore.resumeUpdatePicture(mWebViewCore); 5959 if (mScroller.springback(mScrollX, mScrollY, 0, computeMaxScrollX(), 5960 0, computeMaxScrollY())) { 5961 invalidate(); 5962 } 5963 return; 5964 } 5965 float currentVelocity = mScroller.getCurrVelocity(); 5966 if (mLastVelocity > 0 && currentVelocity > 0) { 5967 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5968 - Math.atan2(vy, vx))); 5969 final float circle = (float) (Math.PI) * 2.0f; 5970 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5971 vx += currentVelocity * mLastVelX / mLastVelocity; 5972 vy += currentVelocity * mLastVelY / mLastVelocity; 5973 if (DebugFlags.WEB_VIEW) { 5974 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5975 } 5976 } else if (DebugFlags.WEB_VIEW) { 5977 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5978 } 5979 } else if (DebugFlags.WEB_VIEW) { 5980 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5981 + " current=" + currentVelocity 5982 + " vx=" + vx + " vy=" + vy 5983 + " maxX=" + maxX + " maxY=" + maxY 5984 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5985 } 5986 5987 // Allow sloppy flings without overscrolling at the edges. 5988 if ((mScrollX == 0 || mScrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 5989 vx = 0; 5990 } 5991 if ((mScrollY == 0 || mScrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 5992 vy = 0; 5993 } 5994 5995 if (mOverscrollDistance < mOverflingDistance) { 5996 if (mScrollX == -mOverscrollDistance || mScrollX == maxX + mOverscrollDistance) { 5997 vx = 0; 5998 } 5999 if (mScrollY == -mOverscrollDistance || mScrollY == maxY + mOverscrollDistance) { 6000 vy = 0; 6001 } 6002 } 6003 6004 mLastVelX = vx; 6005 mLastVelY = vy; 6006 mLastVelocity = (float) Math.hypot(vx, vy); 6007 6008 // no horizontal overscroll if the content just fits 6009 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY, 6010 maxX == 0 ? 0 : mOverflingDistance, mOverflingDistance); 6011 // Duration is calculated based on velocity. With range boundaries and overscroll 6012 // we may not know how long the final animation will take. (Hence the deprecation 6013 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6014 // resumes during this effect we will take a performance hit. See computeScroll; 6015 // we resume webcore there when the animation is finished. 6016 final int time = mScroller.getDuration(); 6017 awakenScrollBars(time); 6018 invalidate(); 6019 } 6020 6021 private boolean zoomWithPreview(float scale, boolean updateTextWrapScale) { 6022 float oldScale = mActualScale; 6023 mInitialScrollX = mScrollX; 6024 mInitialScrollY = mScrollY; 6025 6026 // snap to DEFAULT_SCALE if it is close 6027 if (Math.abs(scale - mDefaultScale) < MINIMUM_SCALE_INCREMENT) { 6028 scale = mDefaultScale; 6029 } 6030 6031 setNewZoomScale(scale, updateTextWrapScale, false); 6032 6033 if (oldScale != mActualScale) { 6034 // use mZoomPickerScale to see zoom preview first 6035 mZoomStart = SystemClock.uptimeMillis(); 6036 mInvInitialZoomScale = 1.0f / oldScale; 6037 mInvFinalZoomScale = 1.0f / mActualScale; 6038 mZoomScale = mActualScale; 6039 WebViewCore.pauseUpdatePicture(mWebViewCore); 6040 invalidate(); 6041 return true; 6042 } else { 6043 return false; 6044 } 6045 } 6046 6047 /** 6048 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6049 * in charge of installing this view to the view hierarchy. This view will 6050 * become visible when the user starts scrolling via touch and fade away if 6051 * the user does not interact with it. 6052 * <p/> 6053 * API version 3 introduces a built-in zoom mechanism that is shown 6054 * automatically by the MapView. This is the preferred approach for 6055 * showing the zoom UI. 6056 * 6057 * @deprecated The built-in zoom mechanism is preferred, see 6058 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6059 */ 6060 @Deprecated 6061 public View getZoomControls() { 6062 if (!getSettings().supportZoom()) { 6063 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6064 return null; 6065 } 6066 if (mZoomControls == null) { 6067 mZoomControls = createZoomControls(); 6068 6069 /* 6070 * need to be set to VISIBLE first so that getMeasuredHeight() in 6071 * {@link #onSizeChanged()} can return the measured value for proper 6072 * layout. 6073 */ 6074 mZoomControls.setVisibility(View.VISIBLE); 6075 mZoomControlRunnable = new Runnable() { 6076 public void run() { 6077 6078 /* Don't dismiss the controls if the user has 6079 * focus on them. Wait and check again later. 6080 */ 6081 if (!mZoomControls.hasFocus()) { 6082 mZoomControls.hide(); 6083 } else { 6084 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6085 mPrivateHandler.postDelayed(mZoomControlRunnable, 6086 ZOOM_CONTROLS_TIMEOUT); 6087 } 6088 } 6089 }; 6090 } 6091 return mZoomControls; 6092 } 6093 6094 private ExtendedZoomControls createZoomControls() { 6095 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 6096 , null); 6097 zoomControls.setOnZoomInClickListener(new OnClickListener() { 6098 public void onClick(View v) { 6099 // reset time out 6100 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6101 mPrivateHandler.postDelayed(mZoomControlRunnable, 6102 ZOOM_CONTROLS_TIMEOUT); 6103 zoomIn(); 6104 } 6105 }); 6106 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 6107 public void onClick(View v) { 6108 // reset time out 6109 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6110 mPrivateHandler.postDelayed(mZoomControlRunnable, 6111 ZOOM_CONTROLS_TIMEOUT); 6112 zoomOut(); 6113 } 6114 }); 6115 return zoomControls; 6116 } 6117 6118 /** 6119 * Gets the {@link ZoomButtonsController} which can be used to add 6120 * additional buttons to the zoom controls window. 6121 * 6122 * @return The instance of {@link ZoomButtonsController} used by this class, 6123 * or null if it is unavailable. 6124 * @hide 6125 */ 6126 public ZoomButtonsController getZoomButtonsController() { 6127 if (mZoomButtonsController == null) { 6128 mZoomButtonsController = new ZoomButtonsController(this); 6129 mZoomButtonsController.setOnZoomListener(mZoomListener); 6130 // ZoomButtonsController positions the buttons at the bottom, but in 6131 // the middle. Change their layout parameters so they appear on the 6132 // right. 6133 View controls = mZoomButtonsController.getZoomControls(); 6134 ViewGroup.LayoutParams params = controls.getLayoutParams(); 6135 if (params instanceof FrameLayout.LayoutParams) { 6136 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) params; 6137 frameParams.gravity = Gravity.RIGHT; 6138 } 6139 } 6140 return mZoomButtonsController; 6141 } 6142 6143 /** 6144 * Perform zoom in in the webview 6145 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6146 */ 6147 public boolean zoomIn() { 6148 // TODO: alternatively we can disallow this during draw history mode 6149 switchOutDrawHistory(); 6150 mInZoomOverview = false; 6151 // Center zooming to the center of the screen. 6152 mZoomCenterX = getViewWidth() * .5f; 6153 mZoomCenterY = getViewHeight() * .5f; 6154 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 6155 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 6156 return zoomWithPreview(mActualScale * 1.25f, true); 6157 } 6158 6159 /** 6160 * Perform zoom out in the webview 6161 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6162 */ 6163 public boolean zoomOut() { 6164 // TODO: alternatively we can disallow this during draw history mode 6165 switchOutDrawHistory(); 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 * 0.8f, true); 6172 } 6173 6174 private void updateSelection() { 6175 if (mNativeClass == 0) { 6176 return; 6177 } 6178 // mLastTouchX and mLastTouchY are the point in the current viewport 6179 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6180 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6181 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6182 contentX + mNavSlop, contentY + mNavSlop); 6183 nativeSelectBestAt(rect); 6184 } 6185 6186 /** 6187 * Scroll the focused text field/area to match the WebTextView 6188 * @param xPercent New x position of the WebTextView from 0 to 1. 6189 * @param y New y position of the WebTextView in view coordinates 6190 */ 6191 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 6192 if (!inEditingMode() || mWebViewCore == null) { 6193 return; 6194 } 6195 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 6196 // Since this position is relative to the top of the text input 6197 // field, we do not need to take the title bar's height into 6198 // consideration. 6199 viewToContentDimension(y), 6200 new Float(xPercent)); 6201 } 6202 6203 /** 6204 * Set our starting point and time for a drag from the WebTextView. 6205 */ 6206 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6207 if (!inEditingMode()) { 6208 return; 6209 } 6210 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 6211 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 6212 mLastTouchTime = eventTime; 6213 if (!mScroller.isFinished()) { 6214 abortAnimation(); 6215 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6216 } 6217 mSnapScrollMode = SNAP_NONE; 6218 mVelocityTracker = VelocityTracker.obtain(); 6219 mTouchMode = TOUCH_DRAG_START_MODE; 6220 } 6221 6222 /** 6223 * Given a motion event from the WebTextView, set its location to our 6224 * coordinates, and handle the event. 6225 */ 6226 /*package*/ boolean textFieldDrag(MotionEvent event) { 6227 if (!inEditingMode()) { 6228 return false; 6229 } 6230 mDragFromTextInput = true; 6231 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6232 (float) (mWebTextView.getTop() - mScrollY)); 6233 boolean result = onTouchEvent(event); 6234 mDragFromTextInput = false; 6235 return result; 6236 } 6237 6238 /** 6239 * Due a touch up from a WebTextView. This will be handled by webkit to 6240 * change the selection. 6241 * @param event MotionEvent in the WebTextView's coordinates. 6242 */ 6243 /*package*/ void touchUpOnTextField(MotionEvent event) { 6244 if (!inEditingMode()) { 6245 return; 6246 } 6247 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6248 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6249 nativeMotionUp(x, y, mNavSlop); 6250 } 6251 6252 /** 6253 * Called when pressing the center key or trackball on a textfield. 6254 */ 6255 /*package*/ void centerKeyPressOnTextField() { 6256 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6257 nativeCursorNodePointer()); 6258 } 6259 6260 private void doShortPress() { 6261 if (mNativeClass == 0) { 6262 return; 6263 } 6264 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6265 return; 6266 } 6267 mTouchMode = TOUCH_DONE_MODE; 6268 switchOutDrawHistory(); 6269 // mLastTouchX and mLastTouchY are the point in the current viewport 6270 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6271 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6272 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6273 WebViewCore.MotionUpData motionUpData = new WebViewCore 6274 .MotionUpData(); 6275 motionUpData.mFrame = nativeCacheHitFramePointer(); 6276 motionUpData.mNode = nativeCacheHitNodePointer(); 6277 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6278 motionUpData.mX = contentX; 6279 motionUpData.mY = contentY; 6280 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6281 motionUpData); 6282 } else { 6283 doMotionUp(contentX, contentY); 6284 } 6285 } 6286 6287 private void doMotionUp(int contentX, int contentY) { 6288 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 6289 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6290 } 6291 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6292 playSoundEffect(SoundEffectConstants.CLICK); 6293 } 6294 } 6295 6296 /* 6297 * Return true if the view (Plugin) is fully visible and maximized inside 6298 * the WebView. 6299 */ 6300 private boolean isPluginFitOnScreen(ViewManager.ChildView view) { 6301 int viewWidth = getViewWidth(); 6302 int viewHeight = getViewHeightWithTitle(); 6303 float scale = Math.min((float) viewWidth / view.width, 6304 (float) viewHeight / view.height); 6305 if (scale < mMinZoomScale) { 6306 scale = mMinZoomScale; 6307 } else if (scale > mMaxZoomScale) { 6308 scale = mMaxZoomScale; 6309 } 6310 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 6311 if (contentToViewX(view.x) >= mScrollX 6312 && contentToViewX(view.x + view.width) <= mScrollX 6313 + viewWidth 6314 && contentToViewY(view.y) >= mScrollY 6315 && contentToViewY(view.y + view.height) <= mScrollY 6316 + viewHeight) { 6317 return true; 6318 } 6319 } 6320 return false; 6321 } 6322 6323 /* 6324 * Maximize and center the rectangle, specified in the document coordinate 6325 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6326 * animated scroll to center it. If the zoom needs to be changed, find the 6327 * zoom center and do a smooth zoom transition. 6328 */ 6329 private void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 6330 int viewWidth = getViewWidth(); 6331 int viewHeight = getViewHeightWithTitle(); 6332 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 6333 / docHeight); 6334 if (scale < mMinZoomScale) { 6335 scale = mMinZoomScale; 6336 } else if (scale > mMaxZoomScale) { 6337 scale = mMaxZoomScale; 6338 } 6339 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 6340 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 6341 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 6342 true, 0); 6343 } else { 6344 float oldScreenX = docX * mActualScale - mScrollX; 6345 float rectViewX = docX * scale; 6346 float rectViewWidth = docWidth * scale; 6347 float newMaxWidth = mContentWidth * scale; 6348 float newScreenX = (viewWidth - rectViewWidth) / 2; 6349 // pin the newX to the WebView 6350 if (newScreenX > rectViewX) { 6351 newScreenX = rectViewX; 6352 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6353 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6354 } 6355 mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale) 6356 / (scale - mActualScale); 6357 float oldScreenY = docY * mActualScale + getTitleHeight() 6358 - mScrollY; 6359 float rectViewY = docY * scale + getTitleHeight(); 6360 float rectViewHeight = docHeight * scale; 6361 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6362 float newScreenY = (viewHeight - rectViewHeight) / 2; 6363 // pin the newY to the WebView 6364 if (newScreenY > rectViewY) { 6365 newScreenY = rectViewY; 6366 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6367 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6368 } 6369 mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale) 6370 / (scale - mActualScale); 6371 zoomWithPreview(scale, false); 6372 } 6373 } 6374 6375 void dismissZoomControl() { 6376 if (mWebViewCore == null) { 6377 // maybe called after WebView's destroy(). As we can't get settings, 6378 // just hide zoom control for both styles. 6379 if (mZoomButtonsController != null) { 6380 mZoomButtonsController.setVisible(false); 6381 } 6382 if (mZoomControls != null) { 6383 mZoomControls.hide(); 6384 } 6385 return; 6386 } 6387 WebSettings settings = getSettings(); 6388 if (settings.getBuiltInZoomControls()) { 6389 if (mZoomButtonsController != null) { 6390 mZoomButtonsController.setVisible(false); 6391 } 6392 } else { 6393 if (mZoomControlRunnable != null) { 6394 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6395 } 6396 if (mZoomControls != null) { 6397 mZoomControls.hide(); 6398 } 6399 } 6400 } 6401 6402 // Rule for double tap: 6403 // 1. if the current scale is not same as the text wrap scale and layout 6404 // algorithm is NARROW_COLUMNS, fit to column; 6405 // 2. if the current state is not overview mode, change to overview mode; 6406 // 3. if the current state is overview mode, change to default scale. 6407 private void doDoubleTap() { 6408 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 6409 return; 6410 } 6411 mZoomCenterX = mLastTouchX; 6412 mZoomCenterY = mLastTouchY; 6413 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 6414 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 6415 WebSettings settings = getSettings(); 6416 settings.setDoubleTapToastCount(0); 6417 // remove the zoom control after double tap 6418 dismissZoomControl(); 6419 ViewManager.ChildView plugin = mViewManager.hitTest(mAnchorX, mAnchorY); 6420 if (plugin != null) { 6421 if (isPluginFitOnScreen(plugin)) { 6422 mInZoomOverview = true; 6423 // Force the titlebar fully reveal in overview mode 6424 if (mScrollY < getTitleHeight()) mScrollY = 0; 6425 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth, 6426 true); 6427 } else { 6428 mInZoomOverview = false; 6429 centerFitRect(plugin.x, plugin.y, plugin.width, plugin.height); 6430 } 6431 return; 6432 } 6433 boolean zoomToDefault = false; 6434 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 6435 && (Math.abs(mActualScale - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT)) { 6436 setNewZoomScale(mActualScale, true, true); 6437 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 6438 if (Math.abs(mActualScale - overviewScale) < MINIMUM_SCALE_INCREMENT) { 6439 mInZoomOverview = true; 6440 } 6441 } else if (!mInZoomOverview) { 6442 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 6443 if (Math.abs(mActualScale - newScale) >= MINIMUM_SCALE_INCREMENT) { 6444 mInZoomOverview = true; 6445 // Force the titlebar fully reveal in overview mode 6446 if (mScrollY < getTitleHeight()) mScrollY = 0; 6447 zoomWithPreview(newScale, true); 6448 } else if (Math.abs(mActualScale - mDefaultScale) >= MINIMUM_SCALE_INCREMENT) { 6449 zoomToDefault = true; 6450 } 6451 } else { 6452 zoomToDefault = true; 6453 } 6454 if (zoomToDefault) { 6455 mInZoomOverview = false; 6456 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 6457 if (left != NO_LEFTEDGE) { 6458 // add a 5pt padding to the left edge. 6459 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 6460 - mScrollX; 6461 // Re-calculate the zoom center so that the new scroll x will be 6462 // on the left edge. 6463 if (viewLeft > 0) { 6464 mZoomCenterX = viewLeft * mDefaultScale 6465 / (mDefaultScale - mActualScale); 6466 } else { 6467 scrollBy(viewLeft, 0); 6468 mZoomCenterX = 0; 6469 } 6470 } 6471 zoomWithPreview(mDefaultScale, true); 6472 } 6473 } 6474 6475 // Called by JNI to handle a touch on a node representing an email address, 6476 // address, or phone number 6477 private void overrideLoading(String url) { 6478 mCallbackProxy.uiOverrideUrlLoading(url); 6479 } 6480 6481 @Override 6482 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6483 boolean result = false; 6484 if (inEditingMode()) { 6485 result = mWebTextView.requestFocus(direction, 6486 previouslyFocusedRect); 6487 } else { 6488 result = super.requestFocus(direction, previouslyFocusedRect); 6489 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6490 // For cases such as GMail, where we gain focus from a direction, 6491 // we want to move to the first available link. 6492 // FIXME: If there are no visible links, we may not want to 6493 int fakeKeyDirection = 0; 6494 switch(direction) { 6495 case View.FOCUS_UP: 6496 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6497 break; 6498 case View.FOCUS_DOWN: 6499 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6500 break; 6501 case View.FOCUS_LEFT: 6502 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6503 break; 6504 case View.FOCUS_RIGHT: 6505 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6506 break; 6507 default: 6508 return result; 6509 } 6510 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6511 navHandledKey(fakeKeyDirection, 1, true, 0); 6512 } 6513 } 6514 } 6515 return result; 6516 } 6517 6518 @Override 6519 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6520 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6521 6522 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6523 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6524 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6525 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6526 6527 int measuredHeight = heightSize; 6528 int measuredWidth = widthSize; 6529 6530 // Grab the content size from WebViewCore. 6531 int contentHeight = contentToViewDimension(mContentHeight); 6532 int contentWidth = contentToViewDimension(mContentWidth); 6533 6534// Log.d(LOGTAG, "------- measure " + heightMode); 6535 6536 if (heightMode != MeasureSpec.EXACTLY) { 6537 mHeightCanMeasure = true; 6538 measuredHeight = contentHeight; 6539 if (heightMode == MeasureSpec.AT_MOST) { 6540 // If we are larger than the AT_MOST height, then our height can 6541 // no longer be measured and we should scroll internally. 6542 if (measuredHeight > heightSize) { 6543 measuredHeight = heightSize; 6544 mHeightCanMeasure = false; 6545 } 6546 } 6547 } else { 6548 mHeightCanMeasure = false; 6549 } 6550 if (mNativeClass != 0) { 6551 nativeSetHeightCanMeasure(mHeightCanMeasure); 6552 } 6553 // For the width, always use the given size unless unspecified. 6554 if (widthMode == MeasureSpec.UNSPECIFIED) { 6555 mWidthCanMeasure = true; 6556 measuredWidth = contentWidth; 6557 } else { 6558 mWidthCanMeasure = false; 6559 } 6560 6561 synchronized (this) { 6562 setMeasuredDimension(measuredWidth, measuredHeight); 6563 } 6564 } 6565 6566 @Override 6567 public boolean requestChildRectangleOnScreen(View child, 6568 Rect rect, 6569 boolean immediate) { 6570 rect.offset(child.getLeft() - child.getScrollX(), 6571 child.getTop() - child.getScrollY()); 6572 6573 Rect content = new Rect(viewToContentX(mScrollX), 6574 viewToContentY(mScrollY), 6575 viewToContentX(mScrollX + getWidth() 6576 - getVerticalScrollbarWidth()), 6577 viewToContentY(mScrollY + getViewHeightWithTitle())); 6578 content = nativeSubtractLayers(content); 6579 int screenTop = contentToViewY(content.top); 6580 int screenBottom = contentToViewY(content.bottom); 6581 int height = screenBottom - screenTop; 6582 int scrollYDelta = 0; 6583 6584 if (rect.bottom > screenBottom) { 6585 int oneThirdOfScreenHeight = height / 3; 6586 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6587 // If the rectangle is too tall to fit in the bottom two thirds 6588 // of the screen, place it at the top. 6589 scrollYDelta = rect.top - screenTop; 6590 } else { 6591 // If the rectangle will still fit on screen, we want its 6592 // top to be in the top third of the screen. 6593 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6594 } 6595 } else if (rect.top < screenTop) { 6596 scrollYDelta = rect.top - screenTop; 6597 } 6598 6599 int screenLeft = contentToViewX(content.left); 6600 int screenRight = contentToViewX(content.right); 6601 int width = screenRight - screenLeft; 6602 int scrollXDelta = 0; 6603 6604 if (rect.right > screenRight && rect.left > screenLeft) { 6605 if (rect.width() > width) { 6606 scrollXDelta += (rect.left - screenLeft); 6607 } else { 6608 scrollXDelta += (rect.right - screenRight); 6609 } 6610 } else if (rect.left < screenLeft) { 6611 scrollXDelta -= (screenLeft - rect.left); 6612 } 6613 6614 if ((scrollYDelta | scrollXDelta) != 0) { 6615 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6616 } 6617 6618 return false; 6619 } 6620 6621 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6622 String replace, int newStart, int newEnd) { 6623 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6624 arg.mReplace = replace; 6625 arg.mNewStart = newStart; 6626 arg.mNewEnd = newEnd; 6627 mTextGeneration++; 6628 arg.mTextGeneration = mTextGeneration; 6629 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6630 } 6631 6632 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6633 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6634 arg.mEvent = event; 6635 arg.mCurrentText = currentText; 6636 // Increase our text generation number, and pass it to webcore thread 6637 mTextGeneration++; 6638 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6639 // WebKit's document state is not saved until about to leave the page. 6640 // To make sure the host application, like Browser, has the up to date 6641 // document state when it goes to background, we force to save the 6642 // document state. 6643 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6644 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6645 cursorData(), 1000); 6646 } 6647 6648 /* package */ synchronized WebViewCore getWebViewCore() { 6649 return mWebViewCore; 6650 } 6651 6652 //------------------------------------------------------------------------- 6653 // Methods can be called from a separate thread, like WebViewCore 6654 // If it needs to call the View system, it has to send message. 6655 //------------------------------------------------------------------------- 6656 6657 /** 6658 * General handler to receive message coming from webkit thread 6659 */ 6660 class PrivateHandler extends Handler { 6661 @Override 6662 public void handleMessage(Message msg) { 6663 // exclude INVAL_RECT_MSG_ID since it is frequently output 6664 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6665 if (msg.what >= FIRST_PRIVATE_MSG_ID 6666 && msg.what <= LAST_PRIVATE_MSG_ID) { 6667 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6668 - FIRST_PRIVATE_MSG_ID]); 6669 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6670 && msg.what <= LAST_PACKAGE_MSG_ID) { 6671 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6672 - FIRST_PACKAGE_MSG_ID]); 6673 } else { 6674 Log.v(LOGTAG, Integer.toString(msg.what)); 6675 } 6676 } 6677 if (mWebViewCore == null) { 6678 // after WebView's destroy() is called, skip handling messages. 6679 return; 6680 } 6681 switch (msg.what) { 6682 case REMEMBER_PASSWORD: { 6683 mDatabase.setUsernamePassword( 6684 msg.getData().getString("host"), 6685 msg.getData().getString("username"), 6686 msg.getData().getString("password")); 6687 ((Message) msg.obj).sendToTarget(); 6688 break; 6689 } 6690 case NEVER_REMEMBER_PASSWORD: { 6691 mDatabase.setUsernamePassword( 6692 msg.getData().getString("host"), null, null); 6693 ((Message) msg.obj).sendToTarget(); 6694 break; 6695 } 6696 case PREVENT_DEFAULT_TIMEOUT: { 6697 // if timeout happens, cancel it so that it won't block UI 6698 // to continue handling touch events 6699 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6700 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6701 || (msg.arg1 == MotionEvent.ACTION_MOVE 6702 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6703 cancelWebCoreTouchEvent( 6704 viewToContentX((int) mLastTouchX + mScrollX), 6705 viewToContentY((int) mLastTouchY + mScrollY), 6706 true); 6707 } 6708 break; 6709 } 6710 case SWITCH_TO_SHORTPRESS: { 6711 if (mTouchMode == TOUCH_INIT_MODE) { 6712 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6713 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6714 updateSelection(); 6715 } else { 6716 // set to TOUCH_SHORTPRESS_MODE so that it won't 6717 // trigger double tap any more 6718 mTouchMode = TOUCH_SHORTPRESS_MODE; 6719 } 6720 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6721 mTouchMode = TOUCH_DONE_MODE; 6722 } 6723 break; 6724 } 6725 case SWITCH_TO_LONGPRESS: { 6726 if (inFullScreenMode() || mDeferTouchProcess) { 6727 TouchEventData ted = new TouchEventData(); 6728 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6729 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6730 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6731 // metaState for long press is tricky. Should it be the 6732 // state when the press started or when the press was 6733 // released? Or some intermediary key state? For 6734 // simplicity for now, we don't set it. 6735 ted.mMetaState = 0; 6736 ted.mReprocess = mDeferTouchProcess; 6737 if (mDeferTouchProcess) { 6738 ted.mViewX = mLastTouchX; 6739 ted.mViewY = mLastTouchY; 6740 } 6741 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6742 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6743 mTouchMode = TOUCH_DONE_MODE; 6744 performLongClick(); 6745 rebuildWebTextView(); 6746 } 6747 break; 6748 } 6749 case RELEASE_SINGLE_TAP: { 6750 doShortPress(); 6751 break; 6752 } 6753 case SCROLL_BY_MSG_ID: 6754 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6755 break; 6756 case SYNC_SCROLL_TO_MSG_ID: 6757 if (mUserScroll) { 6758 // if user has scrolled explicitly, don't sync the 6759 // scroll position any more 6760 mUserScroll = false; 6761 break; 6762 } 6763 // fall through 6764 case SCROLL_TO_MSG_ID: 6765 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6766 // if we can't scroll to the exact position due to pin, 6767 // send a message to WebCore to re-scroll when we get a 6768 // new picture 6769 mUserScroll = false; 6770 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6771 msg.arg1, msg.arg2); 6772 } 6773 break; 6774 case SPAWN_SCROLL_TO_MSG_ID: 6775 spawnContentScrollTo(msg.arg1, msg.arg2); 6776 break; 6777 case UPDATE_ZOOM_RANGE: { 6778 WebViewCore.RestoreState restoreState 6779 = (WebViewCore.RestoreState) msg.obj; 6780 // mScrollX contains the new minPrefWidth 6781 updateZoomRange(restoreState, getViewWidth(), 6782 restoreState.mScrollX, false); 6783 break; 6784 } 6785 case NEW_PICTURE_MSG_ID: { 6786 // If we've previously delayed deleting a root 6787 // layer, do it now. 6788 if (mDelayedDeleteRootLayer) { 6789 mDelayedDeleteRootLayer = false; 6790 nativeSetRootLayer(0); 6791 } 6792 WebSettings settings = mWebViewCore.getSettings(); 6793 // called for new content 6794 final int viewWidth = getViewWidth(); 6795 final WebViewCore.DrawData draw = 6796 (WebViewCore.DrawData) msg.obj; 6797 final Point viewSize = draw.mViewPoint; 6798 boolean useWideViewport = settings.getUseWideViewPort(); 6799 WebViewCore.RestoreState restoreState = draw.mRestoreState; 6800 boolean hasRestoreState = restoreState != null; 6801 if (hasRestoreState) { 6802 updateZoomRange(restoreState, viewSize.x, 6803 draw.mMinPrefWidth, true); 6804 if (!mDrawHistory) { 6805 mInZoomOverview = false; 6806 6807 if (mInitialScaleInPercent > 0) { 6808 setNewZoomScale(mInitialScaleInPercent / 100.0f, 6809 mInitialScaleInPercent != mTextWrapScale * 100, 6810 false); 6811 } else if (restoreState.mViewScale > 0) { 6812 mTextWrapScale = restoreState.mTextWrapScale; 6813 setNewZoomScale(restoreState.mViewScale, false, 6814 false); 6815 } else { 6816 mInZoomOverview = useWideViewport 6817 && settings.getLoadWithOverviewMode(); 6818 float scale; 6819 if (mInZoomOverview) { 6820 scale = (float) viewWidth 6821 / DEFAULT_VIEWPORT_WIDTH; 6822 } else { 6823 scale = restoreState.mTextWrapScale; 6824 } 6825 setNewZoomScale(scale, Math.abs(scale 6826 - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT, 6827 false); 6828 } 6829 setContentScrollTo(restoreState.mScrollX, 6830 restoreState.mScrollY); 6831 // As we are on a new page, remove the WebTextView. This 6832 // is necessary for page loads driven by webkit, and in 6833 // particular when the user was on a password field, so 6834 // the WebTextView was visible. 6835 clearTextEntry(false); 6836 // update the zoom buttons as the scale can be changed 6837 if (getSettings().getBuiltInZoomControls()) { 6838 updateZoomButtonsEnabled(); 6839 } 6840 } 6841 } 6842 // We update the layout (i.e. request a layout from the 6843 // view system) if the last view size that we sent to 6844 // WebCore matches the view size of the picture we just 6845 // received in the fixed dimension. 6846 final boolean updateLayout = viewSize.x == mLastWidthSent 6847 && viewSize.y == mLastHeightSent; 6848 recordNewContentSize(draw.mWidthHeight.x, 6849 draw.mWidthHeight.y 6850 + (mFindIsUp ? mFindHeight : 0), updateLayout); 6851 if (DebugFlags.WEB_VIEW) { 6852 Rect b = draw.mInvalRegion.getBounds(); 6853 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6854 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6855 } 6856 invalidateContentRect(draw.mInvalRegion.getBounds()); 6857 if (mPictureListener != null) { 6858 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6859 } 6860 if (useWideViewport) { 6861 // limit mZoomOverviewWidth upper bound to 6862 // sMaxViewportWidth so that if the page doesn't behave 6863 // well, the WebView won't go insane. limit the lower 6864 // bound to match the default scale for mobile sites. 6865 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 6866 .max((int) (viewWidth / mDefaultScale), Math 6867 .max(draw.mMinPrefWidth, 6868 draw.mViewPoint.x))); 6869 } 6870 if (!mMinZoomScaleFixed) { 6871 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 6872 } 6873 if (!mDrawHistory && mInZoomOverview) { 6874 // fit the content width to the current view. Ignore 6875 // the rounding error case. 6876 if (Math.abs((viewWidth * mInvActualScale) 6877 - mZoomOverviewWidth) > 1) { 6878 setNewZoomScale((float) viewWidth 6879 / mZoomOverviewWidth, Math.abs(mActualScale 6880 - mTextWrapScale) < MINIMUM_SCALE_INCREMENT, 6881 false); 6882 } 6883 } 6884 if (draw.mFocusSizeChanged && inEditingMode()) { 6885 mFocusSizeChanged = true; 6886 } 6887 if (hasRestoreState) { 6888 mViewManager.postReadyToDrawAll(); 6889 } 6890 break; 6891 } 6892 case WEBCORE_INITIALIZED_MSG_ID: 6893 // nativeCreate sets mNativeClass to a non-zero value 6894 nativeCreate(msg.arg1); 6895 break; 6896 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6897 // Make sure that the textfield is currently focused 6898 // and representing the same node as the pointer. 6899 if (inEditingMode() && 6900 mWebTextView.isSameTextField(msg.arg1)) { 6901 if (msg.getData().getBoolean("password")) { 6902 Spannable text = (Spannable) mWebTextView.getText(); 6903 int start = Selection.getSelectionStart(text); 6904 int end = Selection.getSelectionEnd(text); 6905 mWebTextView.setInPassword(true); 6906 // Restore the selection, which may have been 6907 // ruined by setInPassword. 6908 Spannable pword = 6909 (Spannable) mWebTextView.getText(); 6910 Selection.setSelection(pword, start, end); 6911 // If the text entry has created more events, ignore 6912 // this one. 6913 } else if (msg.arg2 == mTextGeneration) { 6914 mWebTextView.setTextAndKeepSelection( 6915 (String) msg.obj); 6916 } 6917 } 6918 break; 6919 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6920 displaySoftKeyboard(true); 6921 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6922 (WebViewCore.TextSelectionData) msg.obj); 6923 break; 6924 case UPDATE_TEXT_SELECTION_MSG_ID: 6925 // If no textfield was in focus, and the user touched one, 6926 // causing it to send this message, then WebTextView has not 6927 // been set up yet. Rebuild it so it can set its selection. 6928 rebuildWebTextView(); 6929 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6930 (WebViewCore.TextSelectionData) msg.obj); 6931 break; 6932 case RETURN_LABEL: 6933 if (inEditingMode() 6934 && mWebTextView.isSameTextField(msg.arg1)) { 6935 mWebTextView.setHint((String) msg.obj); 6936 InputMethodManager imm 6937 = InputMethodManager.peekInstance(); 6938 // The hint is propagated to the IME in 6939 // onCreateInputConnection. If the IME is already 6940 // active, restart it so that its hint text is updated. 6941 if (imm != null && imm.isActive(mWebTextView)) { 6942 imm.restartInput(mWebTextView); 6943 } 6944 } 6945 break; 6946 case MOVE_OUT_OF_PLUGIN: 6947 navHandledKey(msg.arg1, 1, false, 0); 6948 break; 6949 case UPDATE_TEXT_ENTRY_MSG_ID: 6950 // this is sent after finishing resize in WebViewCore. Make 6951 // sure the text edit box is still on the screen. 6952 if (inEditingMode() && nativeCursorIsTextInput()) { 6953 mWebTextView.bringIntoView(); 6954 rebuildWebTextView(); 6955 } 6956 break; 6957 case CLEAR_TEXT_ENTRY: 6958 clearTextEntry(false); 6959 break; 6960 case INVAL_RECT_MSG_ID: { 6961 Rect r = (Rect)msg.obj; 6962 if (r == null) { 6963 invalidate(); 6964 } else { 6965 // we need to scale r from content into view coords, 6966 // which viewInvalidate() does for us 6967 viewInvalidate(r.left, r.top, r.right, r.bottom); 6968 } 6969 break; 6970 } 6971 case IMMEDIATE_REPAINT_MSG_ID: { 6972 invalidate(); 6973 break; 6974 } 6975 case SET_ROOT_LAYER_MSG_ID: { 6976 if (0 == msg.arg1) { 6977 // Null indicates deleting the old layer, but 6978 // don't actually do so until we've got the 6979 // new page to display. 6980 mDelayedDeleteRootLayer = true; 6981 } else { 6982 mDelayedDeleteRootLayer = false; 6983 nativeSetRootLayer(msg.arg1); 6984 invalidate(); 6985 } 6986 break; 6987 } 6988 case REQUEST_FORM_DATA: 6989 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6990 if (mWebTextView.isSameTextField(msg.arg1)) { 6991 mWebTextView.setAdapterCustom(adapter); 6992 } 6993 break; 6994 case RESUME_WEBCORE_PRIORITY: 6995 WebViewCore.resumePriority(); 6996 WebViewCore.resumeUpdatePicture(mWebViewCore); 6997 break; 6998 6999 case LONG_PRESS_CENTER: 7000 // as this is shared by keydown and trackballdown, reset all 7001 // the states 7002 mGotCenterDown = false; 7003 mTrackballDown = false; 7004 performLongClick(); 7005 break; 7006 7007 case WEBCORE_NEED_TOUCH_EVENTS: 7008 mForwardTouchEvents = (msg.arg1 != 0); 7009 break; 7010 7011 case PREVENT_TOUCH_ID: 7012 if (inFullScreenMode()) { 7013 break; 7014 } 7015 if (msg.obj == null) { 7016 if (msg.arg1 == MotionEvent.ACTION_DOWN 7017 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7018 // if prevent default is called from WebCore, UI 7019 // will not handle the rest of the touch events any 7020 // more. 7021 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7022 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7023 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7024 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7025 // the return for the first ACTION_MOVE will decide 7026 // whether UI will handle touch or not. Currently no 7027 // support for alternating prevent default 7028 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7029 : PREVENT_DEFAULT_NO; 7030 } 7031 } else if (msg.arg2 == 0) { 7032 // prevent default is not called in WebCore, so the 7033 // message needs to be reprocessed in UI 7034 TouchEventData ted = (TouchEventData) msg.obj; 7035 switch (ted.mAction) { 7036 case MotionEvent.ACTION_DOWN: 7037 mLastDeferTouchX = ted.mViewX; 7038 mLastDeferTouchY = ted.mViewY; 7039 mDeferTouchMode = TOUCH_INIT_MODE; 7040 break; 7041 case MotionEvent.ACTION_MOVE: { 7042 // no snapping in defer process 7043 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7044 mDeferTouchMode = TOUCH_DRAG_MODE; 7045 mLastDeferTouchX = ted.mViewX; 7046 mLastDeferTouchY = ted.mViewY; 7047 startDrag(); 7048 } 7049 int deltaX = pinLocX((int) (mScrollX 7050 + mLastDeferTouchX - ted.mViewX)) 7051 - mScrollX; 7052 int deltaY = pinLocY((int) (mScrollY 7053 + mLastDeferTouchY - ted.mViewY)) 7054 - mScrollY; 7055 doDrag(deltaX, deltaY); 7056 if (deltaX != 0) mLastDeferTouchX = ted.mViewX; 7057 if (deltaY != 0) mLastDeferTouchY = ted.mViewY; 7058 break; 7059 } 7060 case MotionEvent.ACTION_UP: 7061 case MotionEvent.ACTION_CANCEL: 7062 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7063 // no fling in defer process 7064 mScroller.springback(mScrollX, mScrollY, 0, 7065 computeMaxScrollX(), 0, 7066 computeMaxScrollY()); 7067 invalidate(); 7068 WebViewCore.resumePriority(); 7069 WebViewCore.resumeUpdatePicture(mWebViewCore); 7070 } 7071 mDeferTouchMode = TOUCH_DONE_MODE; 7072 break; 7073 case WebViewCore.ACTION_DOUBLETAP: 7074 // doDoubleTap() needs mLastTouchX/Y as anchor 7075 mLastTouchX = ted.mViewX; 7076 mLastTouchY = ted.mViewY; 7077 doDoubleTap(); 7078 mDeferTouchMode = TOUCH_DONE_MODE; 7079 break; 7080 case WebViewCore.ACTION_LONGPRESS: 7081 HitTestResult hitTest = getHitTestResult(); 7082 if (hitTest != null && hitTest.mType 7083 != HitTestResult.UNKNOWN_TYPE) { 7084 performLongClick(); 7085 rebuildWebTextView(); 7086 } 7087 mDeferTouchMode = TOUCH_DONE_MODE; 7088 break; 7089 } 7090 } 7091 break; 7092 7093 case REQUEST_KEYBOARD: 7094 if (msg.arg1 == 0) { 7095 hideSoftKeyboard(); 7096 } else { 7097 displaySoftKeyboard(false); 7098 } 7099 break; 7100 7101 case FIND_AGAIN: 7102 // Ignore if find has been dismissed. 7103 if (mFindIsUp) { 7104 findAll(mLastFind); 7105 } 7106 break; 7107 7108 case DRAG_HELD_MOTIONLESS: 7109 mHeldMotionless = MOTIONLESS_TRUE; 7110 invalidate(); 7111 // fall through to keep scrollbars awake 7112 7113 case AWAKEN_SCROLL_BARS: 7114 if (mTouchMode == TOUCH_DRAG_MODE 7115 && mHeldMotionless == MOTIONLESS_TRUE) { 7116 awakenScrollBars(ViewConfiguration 7117 .getScrollDefaultDelay(), false); 7118 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7119 .obtainMessage(AWAKEN_SCROLL_BARS), 7120 ViewConfiguration.getScrollDefaultDelay()); 7121 } 7122 break; 7123 7124 case DO_MOTION_UP: 7125 doMotionUp(msg.arg1, msg.arg2); 7126 break; 7127 7128 case SHOW_FULLSCREEN: { 7129 View view = (View) msg.obj; 7130 int npp = msg.arg1; 7131 7132 if (mFullScreenHolder != null) { 7133 Log.w(LOGTAG, "Should not have another full screen."); 7134 mFullScreenHolder.dismiss(); 7135 } 7136 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7137 mFullScreenHolder.setContentView(view); 7138 mFullScreenHolder.setCancelable(false); 7139 mFullScreenHolder.setCanceledOnTouchOutside(false); 7140 mFullScreenHolder.show(); 7141 7142 break; 7143 } 7144 case HIDE_FULLSCREEN: 7145 if (inFullScreenMode()) { 7146 mFullScreenHolder.dismiss(); 7147 mFullScreenHolder = null; 7148 } 7149 break; 7150 7151 case DOM_FOCUS_CHANGED: 7152 if (inEditingMode()) { 7153 nativeClearCursor(); 7154 rebuildWebTextView(); 7155 } 7156 break; 7157 7158 case SHOW_RECT_MSG_ID: { 7159 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7160 int x = mScrollX; 7161 int left = contentToViewX(data.mLeft); 7162 int width = contentToViewDimension(data.mWidth); 7163 int maxWidth = contentToViewDimension(data.mContentWidth); 7164 int viewWidth = getViewWidth(); 7165 if (width < viewWidth) { 7166 // center align 7167 x += left + width / 2 - mScrollX - viewWidth / 2; 7168 } else { 7169 x += (int) (left + data.mXPercentInDoc * width 7170 - mScrollX - data.mXPercentInView * viewWidth); 7171 } 7172 if (DebugFlags.WEB_VIEW) { 7173 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7174 width + ",maxWidth=" + maxWidth + 7175 ",viewWidth=" + viewWidth + ",x=" 7176 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7177 ",xPercentInView=" + data.mXPercentInView+ ")"); 7178 } 7179 // use the passing content width to cap x as the current 7180 // mContentWidth may not be updated yet 7181 x = Math.max(0, 7182 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7183 int top = contentToViewY(data.mTop); 7184 int height = contentToViewDimension(data.mHeight); 7185 int maxHeight = contentToViewDimension(data.mContentHeight); 7186 int viewHeight = getViewHeight(); 7187 int y = (int) (top + data.mYPercentInDoc * height - 7188 data.mYPercentInView * viewHeight); 7189 if (DebugFlags.WEB_VIEW) { 7190 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7191 height + ",maxHeight=" + maxHeight + 7192 ",viewHeight=" + viewHeight + ",y=" 7193 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7194 ",yPercentInView=" + data.mYPercentInView+ ")"); 7195 } 7196 // use the passing content height to cap y as the current 7197 // mContentHeight may not be updated yet 7198 y = Math.max(0, 7199 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7200 // We need to take into account the visible title height 7201 // when scrolling since y is an absolute view position. 7202 y = Math.max(0, y - getVisibleTitleHeight()); 7203 scrollTo(x, y); 7204 } 7205 break; 7206 7207 case CENTER_FIT_RECT: 7208 Rect r = (Rect)msg.obj; 7209 mInZoomOverview = false; 7210 centerFitRect(r.left, r.top, r.width(), r.height()); 7211 break; 7212 7213 case SET_SCROLLBAR_MODES: 7214 mHorizontalScrollBarMode = msg.arg1; 7215 mVerticalScrollBarMode = msg.arg2; 7216 break; 7217 7218 default: 7219 super.handleMessage(msg); 7220 break; 7221 } 7222 } 7223 } 7224 7225 /** 7226 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7227 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7228 */ 7229 private void updateTextSelectionFromMessage(int nodePointer, 7230 int textGeneration, WebViewCore.TextSelectionData data) { 7231 if (inEditingMode() 7232 && mWebTextView.isSameTextField(nodePointer) 7233 && textGeneration == mTextGeneration) { 7234 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7235 } 7236 } 7237 7238 // Class used to use a dropdown for a <select> element 7239 private class InvokeListBox implements Runnable { 7240 // Whether the listbox allows multiple selection. 7241 private boolean mMultiple; 7242 // Passed in to a list with multiple selection to tell 7243 // which items are selected. 7244 private int[] mSelectedArray; 7245 // Passed in to a list with single selection to tell 7246 // where the initial selection is. 7247 private int mSelection; 7248 7249 private Container[] mContainers; 7250 7251 // Need these to provide stable ids to my ArrayAdapter, 7252 // which normally does not have stable ids. (Bug 1250098) 7253 private class Container extends Object { 7254 /** 7255 * Possible values for mEnabled. Keep in sync with OptionStatus in 7256 * WebViewCore.cpp 7257 */ 7258 final static int OPTGROUP = -1; 7259 final static int OPTION_DISABLED = 0; 7260 final static int OPTION_ENABLED = 1; 7261 7262 String mString; 7263 int mEnabled; 7264 int mId; 7265 7266 public String toString() { 7267 return mString; 7268 } 7269 } 7270 7271 /** 7272 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7273 * and allow filtering. 7274 */ 7275 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7276 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7277 super(context, 7278 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7279 com.android.internal.R.layout.select_dialog_singlechoice, 7280 objects); 7281 } 7282 7283 @Override 7284 public View getView(int position, View convertView, 7285 ViewGroup parent) { 7286 // Always pass in null so that we will get a new CheckedTextView 7287 // Otherwise, an item which was previously used as an <optgroup> 7288 // element (i.e. has no check), could get used as an <option> 7289 // element, which needs a checkbox/radio, but it would not have 7290 // one. 7291 convertView = super.getView(position, null, parent); 7292 Container c = item(position); 7293 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7294 // ListView does not draw dividers between disabled and 7295 // enabled elements. Use a LinearLayout to provide dividers 7296 LinearLayout layout = new LinearLayout(mContext); 7297 layout.setOrientation(LinearLayout.VERTICAL); 7298 if (position > 0) { 7299 View dividerTop = new View(mContext); 7300 dividerTop.setBackgroundResource( 7301 android.R.drawable.divider_horizontal_bright); 7302 layout.addView(dividerTop); 7303 } 7304 7305 if (Container.OPTGROUP == c.mEnabled) { 7306 // Currently select_dialog_multichoice and 7307 // select_dialog_singlechoice are CheckedTextViews. If 7308 // that changes, the class cast will no longer be valid. 7309 Assert.assertTrue( 7310 convertView instanceof CheckedTextView); 7311 ((CheckedTextView) convertView).setCheckMarkDrawable( 7312 null); 7313 } else { 7314 // c.mEnabled == Container.OPTION_DISABLED 7315 // Draw the disabled element in a disabled state. 7316 convertView.setEnabled(false); 7317 } 7318 7319 layout.addView(convertView); 7320 if (position < getCount() - 1) { 7321 View dividerBottom = new View(mContext); 7322 dividerBottom.setBackgroundResource( 7323 android.R.drawable.divider_horizontal_bright); 7324 layout.addView(dividerBottom); 7325 } 7326 return layout; 7327 } 7328 return convertView; 7329 } 7330 7331 @Override 7332 public boolean hasStableIds() { 7333 // AdapterView's onChanged method uses this to determine whether 7334 // to restore the old state. Return false so that the old (out 7335 // of date) state does not replace the new, valid state. 7336 return false; 7337 } 7338 7339 private Container item(int position) { 7340 if (position < 0 || position >= getCount()) { 7341 return null; 7342 } 7343 return (Container) getItem(position); 7344 } 7345 7346 @Override 7347 public long getItemId(int position) { 7348 Container item = item(position); 7349 if (item == null) { 7350 return -1; 7351 } 7352 return item.mId; 7353 } 7354 7355 @Override 7356 public boolean areAllItemsEnabled() { 7357 return false; 7358 } 7359 7360 @Override 7361 public boolean isEnabled(int position) { 7362 Container item = item(position); 7363 if (item == null) { 7364 return false; 7365 } 7366 return Container.OPTION_ENABLED == item.mEnabled; 7367 } 7368 } 7369 7370 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7371 mMultiple = true; 7372 mSelectedArray = selected; 7373 7374 int length = array.length; 7375 mContainers = new Container[length]; 7376 for (int i = 0; i < length; i++) { 7377 mContainers[i] = new Container(); 7378 mContainers[i].mString = array[i]; 7379 mContainers[i].mEnabled = enabled[i]; 7380 mContainers[i].mId = i; 7381 } 7382 } 7383 7384 private InvokeListBox(String[] array, int[] enabled, int selection) { 7385 mSelection = selection; 7386 mMultiple = false; 7387 7388 int length = array.length; 7389 mContainers = new Container[length]; 7390 for (int i = 0; i < length; i++) { 7391 mContainers[i] = new Container(); 7392 mContainers[i].mString = array[i]; 7393 mContainers[i].mEnabled = enabled[i]; 7394 mContainers[i].mId = i; 7395 } 7396 } 7397 7398 /* 7399 * Whenever the data set changes due to filtering, this class ensures 7400 * that the checked item remains checked. 7401 */ 7402 private class SingleDataSetObserver extends DataSetObserver { 7403 private long mCheckedId; 7404 private ListView mListView; 7405 private Adapter mAdapter; 7406 7407 /* 7408 * Create a new observer. 7409 * @param id The ID of the item to keep checked. 7410 * @param l ListView for getting and clearing the checked states 7411 * @param a Adapter for getting the IDs 7412 */ 7413 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7414 mCheckedId = id; 7415 mListView = l; 7416 mAdapter = a; 7417 } 7418 7419 public void onChanged() { 7420 // The filter may have changed which item is checked. Find the 7421 // item that the ListView thinks is checked. 7422 int position = mListView.getCheckedItemPosition(); 7423 long id = mAdapter.getItemId(position); 7424 if (mCheckedId != id) { 7425 // Clear the ListView's idea of the checked item, since 7426 // it is incorrect 7427 mListView.clearChoices(); 7428 // Search for mCheckedId. If it is in the filtered list, 7429 // mark it as checked 7430 int count = mAdapter.getCount(); 7431 for (int i = 0; i < count; i++) { 7432 if (mAdapter.getItemId(i) == mCheckedId) { 7433 mListView.setItemChecked(i, true); 7434 break; 7435 } 7436 } 7437 } 7438 } 7439 7440 public void onInvalidate() {} 7441 } 7442 7443 public void run() { 7444 final ListView listView = (ListView) LayoutInflater.from(mContext) 7445 .inflate(com.android.internal.R.layout.select_dialog, null); 7446 final MyArrayListAdapter adapter = new 7447 MyArrayListAdapter(mContext, mContainers, mMultiple); 7448 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7449 .setView(listView).setCancelable(true) 7450 .setInverseBackgroundForced(true); 7451 7452 if (mMultiple) { 7453 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7454 public void onClick(DialogInterface dialog, int which) { 7455 mWebViewCore.sendMessage( 7456 EventHub.LISTBOX_CHOICES, 7457 adapter.getCount(), 0, 7458 listView.getCheckedItemPositions()); 7459 }}); 7460 b.setNegativeButton(android.R.string.cancel, 7461 new DialogInterface.OnClickListener() { 7462 public void onClick(DialogInterface dialog, int which) { 7463 mWebViewCore.sendMessage( 7464 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7465 }}); 7466 } 7467 final AlertDialog dialog = b.create(); 7468 listView.setAdapter(adapter); 7469 listView.setFocusableInTouchMode(true); 7470 // There is a bug (1250103) where the checks in a ListView with 7471 // multiple items selected are associated with the positions, not 7472 // the ids, so the items do not properly retain their checks when 7473 // filtered. Do not allow filtering on multiple lists until 7474 // that bug is fixed. 7475 7476 listView.setTextFilterEnabled(!mMultiple); 7477 if (mMultiple) { 7478 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7479 int length = mSelectedArray.length; 7480 for (int i = 0; i < length; i++) { 7481 listView.setItemChecked(mSelectedArray[i], true); 7482 } 7483 } else { 7484 listView.setOnItemClickListener(new OnItemClickListener() { 7485 public void onItemClick(AdapterView parent, View v, 7486 int position, long id) { 7487 mWebViewCore.sendMessage( 7488 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 7489 dialog.dismiss(); 7490 } 7491 }); 7492 if (mSelection != -1) { 7493 listView.setSelection(mSelection); 7494 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7495 listView.setItemChecked(mSelection, true); 7496 DataSetObserver observer = new SingleDataSetObserver( 7497 adapter.getItemId(mSelection), listView, adapter); 7498 adapter.registerDataSetObserver(observer); 7499 } 7500 } 7501 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7502 public void onCancel(DialogInterface dialog) { 7503 mWebViewCore.sendMessage( 7504 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7505 } 7506 }); 7507 dialog.show(); 7508 } 7509 } 7510 7511 /* 7512 * Request a dropdown menu for a listbox with multiple selection. 7513 * 7514 * @param array Labels for the listbox. 7515 * @param enabledArray State for each element in the list. See static 7516 * integers in Container class. 7517 * @param selectedArray Which positions are initally selected. 7518 */ 7519 void requestListBox(String[] array, int[] enabledArray, int[] 7520 selectedArray) { 7521 mPrivateHandler.post( 7522 new InvokeListBox(array, enabledArray, selectedArray)); 7523 } 7524 7525 private void updateZoomRange(WebViewCore.RestoreState restoreState, 7526 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 7527 if (restoreState.mMinScale == 0) { 7528 if (restoreState.mMobileSite) { 7529 if (minPrefWidth > Math.max(0, viewWidth)) { 7530 mMinZoomScale = (float) viewWidth / minPrefWidth; 7531 mMinZoomScaleFixed = false; 7532 if (updateZoomOverview) { 7533 WebSettings settings = getSettings(); 7534 mInZoomOverview = settings.getUseWideViewPort() && 7535 settings.getLoadWithOverviewMode(); 7536 } 7537 } else { 7538 mMinZoomScale = restoreState.mDefaultScale; 7539 mMinZoomScaleFixed = true; 7540 } 7541 } else { 7542 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 7543 mMinZoomScaleFixed = false; 7544 } 7545 } else { 7546 mMinZoomScale = restoreState.mMinScale; 7547 mMinZoomScaleFixed = true; 7548 } 7549 if (restoreState.mMaxScale == 0) { 7550 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 7551 } else { 7552 mMaxZoomScale = restoreState.mMaxScale; 7553 } 7554 } 7555 7556 /* 7557 * Request a dropdown menu for a listbox with single selection or a single 7558 * <select> element. 7559 * 7560 * @param array Labels for the listbox. 7561 * @param enabledArray State for each element in the list. See static 7562 * integers in Container class. 7563 * @param selection Which position is initally selected. 7564 */ 7565 void requestListBox(String[] array, int[] enabledArray, int selection) { 7566 mPrivateHandler.post( 7567 new InvokeListBox(array, enabledArray, selection)); 7568 } 7569 7570 // called by JNI 7571 private void sendMoveFocus(int frame, int node) { 7572 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7573 new WebViewCore.CursorData(frame, node, 0, 0)); 7574 } 7575 7576 // called by JNI 7577 private void sendMoveMouse(int frame, int node, int x, int y) { 7578 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7579 new WebViewCore.CursorData(frame, node, x, y)); 7580 } 7581 7582 /* 7583 * Send a mouse move event to the webcore thread. 7584 * 7585 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7586 * which wants key events, but it is not the focus. This 7587 * will make the visual appear as though nothing is in 7588 * focus. Remove the WebTextView, if present, and stop 7589 * drawing the blinking caret. 7590 * called by JNI 7591 */ 7592 private void sendMoveMouseIfLatest(boolean removeFocus) { 7593 if (removeFocus) { 7594 clearTextEntry(true); 7595 } 7596 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7597 cursorData()); 7598 } 7599 7600 // called by JNI 7601 private void sendMotionUp(int touchGeneration, 7602 int frame, int node, int x, int y) { 7603 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7604 touchUpData.mMoveGeneration = touchGeneration; 7605 touchUpData.mFrame = frame; 7606 touchUpData.mNode = node; 7607 touchUpData.mX = x; 7608 touchUpData.mY = y; 7609 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7610 } 7611 7612 7613 private int getScaledMaxXScroll() { 7614 int width; 7615 if (mHeightCanMeasure == false) { 7616 width = getViewWidth() / 4; 7617 } else { 7618 Rect visRect = new Rect(); 7619 calcOurVisibleRect(visRect); 7620 width = visRect.width() / 2; 7621 } 7622 // FIXME the divisor should be retrieved from somewhere 7623 return viewToContentX(width); 7624 } 7625 7626 private int getScaledMaxYScroll() { 7627 int height; 7628 if (mHeightCanMeasure == false) { 7629 height = getViewHeight() / 4; 7630 } else { 7631 Rect visRect = new Rect(); 7632 calcOurVisibleRect(visRect); 7633 height = visRect.height() / 2; 7634 } 7635 // FIXME the divisor should be retrieved from somewhere 7636 // the closest thing today is hard-coded into ScrollView.java 7637 // (from ScrollView.java, line 363) int maxJump = height/2; 7638 return Math.round(height * mInvActualScale); 7639 } 7640 7641 /** 7642 * Called by JNI to invalidate view 7643 */ 7644 private void viewInvalidate() { 7645 invalidate(); 7646 } 7647 7648 /** 7649 * Pass the key to the plugin. This assumes that nativeFocusIsPlugin() 7650 * returned true. 7651 */ 7652 private void letPluginHandleNavKey(int keyCode, long time, boolean down) { 7653 int keyEventAction; 7654 int eventHubAction; 7655 if (down) { 7656 keyEventAction = KeyEvent.ACTION_DOWN; 7657 eventHubAction = EventHub.KEY_DOWN; 7658 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7659 } else { 7660 keyEventAction = KeyEvent.ACTION_UP; 7661 eventHubAction = EventHub.KEY_UP; 7662 } 7663 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7664 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7665 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7666 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7667 , 0, 0, 0); 7668 mWebViewCore.sendMessage(eventHubAction, event); 7669 } 7670 7671 // return true if the key was handled 7672 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7673 long time) { 7674 if (mNativeClass == 0) { 7675 return false; 7676 } 7677 mLastCursorTime = time; 7678 mLastCursorBounds = nativeGetCursorRingBounds(); 7679 boolean keyHandled 7680 = nativeMoveCursor(keyCode, count, noScroll) == false; 7681 if (DebugFlags.WEB_VIEW) { 7682 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7683 + " mLastCursorTime=" + mLastCursorTime 7684 + " handled=" + keyHandled); 7685 } 7686 if (keyHandled == false || mHeightCanMeasure == false) { 7687 return keyHandled; 7688 } 7689 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7690 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7691 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7692 Rect visRect = new Rect(); 7693 calcOurVisibleRect(visRect); 7694 Rect outset = new Rect(visRect); 7695 int maxXScroll = visRect.width() / 2; 7696 int maxYScroll = visRect.height() / 2; 7697 outset.inset(-maxXScroll, -maxYScroll); 7698 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7699 return keyHandled; 7700 } 7701 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7702 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7703 maxXScroll); 7704 if (maxH > 0) { 7705 pinScrollBy(maxH, 0, true, 0); 7706 } else { 7707 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7708 -maxXScroll); 7709 if (maxH < 0) { 7710 pinScrollBy(maxH, 0, true, 0); 7711 } 7712 } 7713 if (mLastCursorBounds.isEmpty()) return keyHandled; 7714 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7715 return keyHandled; 7716 } 7717 if (DebugFlags.WEB_VIEW) { 7718 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7719 + contentCursorRingBounds); 7720 } 7721 requestRectangleOnScreen(viewCursorRingBounds); 7722 mUserScroll = true; 7723 return keyHandled; 7724 } 7725 7726 /** 7727 * Set the background color. It's white by default. Pass 7728 * zero to make the view transparent. 7729 * @param color the ARGB color described by Color.java 7730 */ 7731 public void setBackgroundColor(int color) { 7732 mBackgroundColor = color; 7733 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7734 } 7735 7736 public void debugDump() { 7737 nativeDebugDump(); 7738 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7739 } 7740 7741 /** 7742 * Draw the HTML page into the specified canvas. This call ignores any 7743 * view-specific zoom, scroll offset, or other changes. It does not draw 7744 * any view-specific chrome, such as progress or URL bars. 7745 * 7746 * @hide only needs to be accessible to Browser and testing 7747 */ 7748 public void drawPage(Canvas canvas) { 7749 mWebViewCore.drawContentPicture(canvas, 0, false, false); 7750 } 7751 7752 /** 7753 * Set the time to wait between passing touches to WebCore. See also the 7754 * TOUCH_SENT_INTERVAL member for further discussion. 7755 * 7756 * @hide This is only used by the DRT test application. 7757 */ 7758 public void setTouchInterval(int interval) { 7759 mCurrentTouchInterval = interval; 7760 } 7761 7762 /** 7763 * Update our cache with updatedText. 7764 * @param updatedText The new text to put in our cache. 7765 */ 7766 /* package */ void updateCachedTextfield(String updatedText) { 7767 // Also place our generation number so that when we look at the cache 7768 // we recognize that it is up to date. 7769 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7770 } 7771 7772 private native int nativeCacheHitFramePointer(); 7773 private native Rect nativeCacheHitNodeBounds(); 7774 private native int nativeCacheHitNodePointer(); 7775 /* package */ native void nativeClearCursor(); 7776 private native void nativeCreate(int ptr); 7777 private native int nativeCursorFramePointer(); 7778 private native Rect nativeCursorNodeBounds(); 7779 private native int nativeCursorNodePointer(); 7780 /* package */ native boolean nativeCursorMatchesFocus(); 7781 private native boolean nativeCursorIntersects(Rect visibleRect); 7782 private native boolean nativeCursorIsAnchor(); 7783 private native boolean nativeCursorIsTextInput(); 7784 private native Point nativeCursorPosition(); 7785 private native String nativeCursorText(); 7786 /** 7787 * Returns true if the native cursor node says it wants to handle key events 7788 * (ala plugins). This can only be called if mNativeClass is non-zero! 7789 */ 7790 private native boolean nativeCursorWantsKeyEvents(); 7791 private native void nativeDebugDump(); 7792 private native void nativeDestroy(); 7793 private native boolean nativeEvaluateLayersAnimations(); 7794 private native void nativeExtendSelection(int x, int y); 7795 private native void nativeDrawExtras(Canvas canvas, int extra); 7796 private native void nativeDumpDisplayTree(String urlOrNull); 7797 private native int nativeFindAll(String findLower, String findUpper); 7798 private native void nativeFindNext(boolean forward); 7799 /* package */ native int nativeFocusCandidateFramePointer(); 7800 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7801 /* package */ native boolean nativeFocusCandidateIsPassword(); 7802 private native boolean nativeFocusCandidateIsRtlText(); 7803 private native boolean nativeFocusCandidateIsTextInput(); 7804 /* package */ native int nativeFocusCandidateMaxLength(); 7805 /* package */ native String nativeFocusCandidateName(); 7806 private native Rect nativeFocusCandidateNodeBounds(); 7807 /* package */ native int nativeFocusCandidatePointer(); 7808 private native String nativeFocusCandidateText(); 7809 private native int nativeFocusCandidateTextSize(); 7810 /** 7811 * Returns an integer corresponding to WebView.cpp::type. 7812 * See WebTextView.setType() 7813 */ 7814 private native int nativeFocusCandidateType(); 7815 private native boolean nativeFocusIsPlugin(); 7816 private native Rect nativeFocusNodeBounds(); 7817 /* package */ native int nativeFocusNodePointer(); 7818 private native Rect nativeGetCursorRingBounds(); 7819 private native String nativeGetSelection(); 7820 private native boolean nativeHasCursorNode(); 7821 private native boolean nativeHasFocusNode(); 7822 private native void nativeHideCursor(); 7823 private native boolean nativeHitSelection(int x, int y); 7824 private native String nativeImageURI(int x, int y); 7825 private native void nativeInstrumentReport(); 7826 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7827 // return true if the page has been scrolled 7828 private native boolean nativeMotionUp(int x, int y, int slop); 7829 // returns false if it handled the key 7830 private native boolean nativeMoveCursor(int keyCode, int count, 7831 boolean noScroll); 7832 private native int nativeMoveGeneration(); 7833 private native void nativeMoveSelection(int x, int y); 7834 private native boolean nativePointInNavCache(int x, int y, int slop); 7835 // Like many other of our native methods, you must make sure that 7836 // mNativeClass is not null before calling this method. 7837 private native void nativeRecordButtons(boolean focused, 7838 boolean pressed, boolean invalidate); 7839 private native void nativeResetSelection(); 7840 private native void nativeSelectAll(); 7841 private native void nativeSelectBestAt(Rect rect); 7842 private native int nativeSelectionX(); 7843 private native int nativeSelectionY(); 7844 private native int nativeFindIndex(); 7845 private native void nativeSetExtendSelection(); 7846 private native void nativeSetFindIsEmpty(); 7847 private native void nativeSetFindIsUp(boolean isUp); 7848 private native void nativeSetFollowedLink(boolean followed); 7849 private native void nativeSetHeightCanMeasure(boolean measure); 7850 private native void nativeSetRootLayer(int layer); 7851 private native void nativeSetSelectionPointer(boolean set, 7852 float scale, int x, int y); 7853 private native boolean nativeStartSelection(int x, int y); 7854 private native void nativeSetSelectionRegion(boolean set); 7855 private native Rect nativeSubtractLayers(Rect content); 7856 private native int nativeTextGeneration(); 7857 // Never call this version except by updateCachedTextfield(String) - 7858 // we always want to pass in our generation number. 7859 private native void nativeUpdateCachedTextfield(String updatedText, 7860 int generation); 7861 private native boolean nativeWordSelection(int x, int y); 7862 // return NO_LEFTEDGE means failure. 7863 private static final int NO_LEFTEDGE = -1; 7864 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 7865} 7866