WebView.java revision e69f1f1a748da99c82bcb56f6c7107a5618ba906
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 // Reference to the AlertDialog displayed by InvokeListBox. 317 // It's used to dismiss the dialog in destroy if not done before. 318 private AlertDialog mListBoxDialog = null; 319 320 static final String LOGTAG = "webview"; 321 322 private static class ExtendedZoomControls extends FrameLayout { 323 public ExtendedZoomControls(Context context, AttributeSet attrs) { 324 super(context, attrs); 325 LayoutInflater inflater = (LayoutInflater) 326 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 327 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 328 mPlusMinusZoomControls = (ZoomControls) findViewById( 329 com.android.internal.R.id.zoomControls); 330 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 331 View.GONE); 332 } 333 334 public void show(boolean showZoom, boolean canZoomOut) { 335 mPlusMinusZoomControls.setVisibility( 336 showZoom ? View.VISIBLE : View.GONE); 337 fade(View.VISIBLE, 0.0f, 1.0f); 338 } 339 340 public void hide() { 341 fade(View.GONE, 1.0f, 0.0f); 342 } 343 344 private void fade(int visibility, float startAlpha, float endAlpha) { 345 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 346 anim.setDuration(500); 347 startAnimation(anim); 348 setVisibility(visibility); 349 } 350 351 public boolean hasFocus() { 352 return mPlusMinusZoomControls.hasFocus(); 353 } 354 355 public void setOnZoomInClickListener(OnClickListener listener) { 356 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 357 } 358 359 public void setOnZoomOutClickListener(OnClickListener listener) { 360 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 361 } 362 363 ZoomControls mPlusMinusZoomControls; 364 } 365 366 /** 367 * Transportation object for returning WebView across thread boundaries. 368 */ 369 public class WebViewTransport { 370 private WebView mWebview; 371 372 /** 373 * Set the WebView to the transportation object. 374 * @param webview The WebView to transport. 375 */ 376 public synchronized void setWebView(WebView webview) { 377 mWebview = webview; 378 } 379 380 /** 381 * Return the WebView object. 382 * @return WebView The transported WebView object. 383 */ 384 public synchronized WebView getWebView() { 385 return mWebview; 386 } 387 } 388 389 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 390 private final CallbackProxy mCallbackProxy; 391 392 private final WebViewDatabase mDatabase; 393 394 // SSL certificate for the main top-level page (if secure) 395 private SslCertificate mCertificate; 396 397 // Native WebView pointer that is 0 until the native object has been 398 // created. 399 private int mNativeClass; 400 // This would be final but it needs to be set to null when the WebView is 401 // destroyed. 402 private WebViewCore mWebViewCore; 403 // Handler for dispatching UI messages. 404 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 405 private WebTextView mWebTextView; 406 // Used to ignore changes to webkit text that arrives to the UI side after 407 // more key events. 408 private int mTextGeneration; 409 410 // Used by WebViewCore to create child views. 411 /* package */ final ViewManager mViewManager; 412 413 // Used to display in full screen mode 414 PluginFullScreenHolder mFullScreenHolder; 415 416 /** 417 * Position of the last touch event. 418 */ 419 private float mLastTouchX; 420 private float mLastTouchY; 421 422 /** 423 * Time of the last touch event. 424 */ 425 private long mLastTouchTime; 426 427 /** 428 * Time of the last time sending touch event to WebViewCore 429 */ 430 private long mLastSentTouchTime; 431 432 /** 433 * The minimum elapsed time before sending another ACTION_MOVE event to 434 * WebViewCore. This really should be tuned for each type of the devices. 435 * For example in Google Map api test case, it takes Dream device at least 436 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 437 * triggering the layout and drawing the picture. While the same process 438 * takes 60+ms on the current high speed device. If we make 439 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 440 * to WebViewCore queue and the real layout and draw events will be pushed 441 * to further, which slows down the refresh rate. Choose 50 to favor the 442 * current high speed devices. For Dream like devices, 100 is a better 443 * choice. Maybe make this in the buildspec later. 444 */ 445 private static final int TOUCH_SENT_INTERVAL = 50; 446 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 447 448 /** 449 * Helper class to get velocity for fling 450 */ 451 VelocityTracker mVelocityTracker; 452 private int mMaximumFling; 453 private float mLastVelocity; 454 private float mLastVelX; 455 private float mLastVelY; 456 457 /** 458 * Touch mode 459 */ 460 private int mTouchMode = TOUCH_DONE_MODE; 461 private static final int TOUCH_INIT_MODE = 1; 462 private static final int TOUCH_DRAG_START_MODE = 2; 463 private static final int TOUCH_DRAG_MODE = 3; 464 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 465 private static final int TOUCH_SHORTPRESS_MODE = 5; 466 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 467 private static final int TOUCH_DONE_MODE = 7; 468 private static final int TOUCH_PINCH_DRAG = 8; 469 470 /** 471 * True if we have a touch panel capable of detecting smooth pan/scale at the same time 472 */ 473 private boolean mAllowPanAndScale; 474 475 // Whether to forward the touch events to WebCore 476 private boolean mForwardTouchEvents = false; 477 478 // Whether to prevent default during touch. The initial value depends on 479 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 480 // for touch down. Otherwise UI will wait for the answer of the first 481 // confirmed move before taking over the control. 482 private static final int PREVENT_DEFAULT_NO = 0; 483 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 484 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 485 private static final int PREVENT_DEFAULT_YES = 3; 486 private static final int PREVENT_DEFAULT_IGNORE = 4; 487 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 488 489 // true when the touch movement exceeds the slop 490 private boolean mConfirmMove; 491 492 // if true, touch events will be first processed by WebCore, if prevent 493 // default is not set, the UI will continue handle them. 494 private boolean mDeferTouchProcess; 495 496 // to avoid interfering with the current touch events, track them 497 // separately. Currently no snapping or fling in the deferred process mode 498 private int mDeferTouchMode = TOUCH_DONE_MODE; 499 private float mLastDeferTouchX; 500 private float mLastDeferTouchY; 501 502 // To keep track of whether the current drag was initiated by a WebTextView, 503 // so that we know not to hide the cursor 504 boolean mDragFromTextInput; 505 506 // Whether or not to draw the cursor ring. 507 private boolean mDrawCursorRing = true; 508 509 // true if onPause has been called (and not onResume) 510 private boolean mIsPaused; 511 512 // true if, during a transition to a new page, we're delaying 513 // deleting a root layer until there's something to draw of the new page. 514 private boolean mDelayedDeleteRootLayer; 515 516 /** 517 * Customizable constant 518 */ 519 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 520 private int mTouchSlopSquare; 521 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 522 private int mDoubleTapSlopSquare; 523 // pre-computed density adjusted navigation slop 524 private int mNavSlop; 525 // This should be ViewConfiguration.getTapTimeout() 526 // But system time out is 100ms, which is too short for the browser. 527 // In the browser, if it switches out of tap too soon, jump tap won't work. 528 private static final int TAP_TIMEOUT = 200; 529 // This should be ViewConfiguration.getLongPressTimeout() 530 // But system time out is 500ms, which is too short for the browser. 531 // With a short timeout, it's difficult to treat trigger a short press. 532 private static final int LONG_PRESS_TIMEOUT = 1000; 533 // needed to avoid flinging after a pause of no movement 534 private static final int MIN_FLING_TIME = 250; 535 // draw unfiltered after drag is held without movement 536 private static final int MOTIONLESS_TIME = 100; 537 // The time that the Zoom Controls are visible before fading away 538 private static final long ZOOM_CONTROLS_TIMEOUT = 539 ViewConfiguration.getZoomControlsTimeout(); 540 // The amount of content to overlap between two screens when going through 541 // pages with the space bar, in pixels. 542 private static final int PAGE_SCROLL_OVERLAP = 24; 543 544 /** 545 * These prevent calling requestLayout if either dimension is fixed. This 546 * depends on the layout parameters and the measure specs. 547 */ 548 boolean mWidthCanMeasure; 549 boolean mHeightCanMeasure; 550 551 // Remember the last dimensions we sent to the native side so we can avoid 552 // sending the same dimensions more than once. 553 int mLastWidthSent; 554 int mLastHeightSent; 555 556 private int mContentWidth; // cache of value from WebViewCore 557 private int mContentHeight; // cache of value from WebViewCore 558 559 // Need to have the separate control for horizontal and vertical scrollbar 560 // style than the View's single scrollbar style 561 private boolean mOverlayHorizontalScrollbar = true; 562 private boolean mOverlayVerticalScrollbar = false; 563 564 // our standard speed. this way small distances will be traversed in less 565 // time than large distances, but we cap the duration, so that very large 566 // distances won't take too long to get there. 567 private static final int STD_SPEED = 480; // pixels per second 568 // time for the longest scroll animation 569 private static final int MAX_DURATION = 750; // milliseconds 570 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 571 private OverScroller mScroller; 572 private boolean mInOverScrollMode = false; 573 private static Paint mOverScrollBackground; 574 private static Paint mOverScrollBorder; 575 576 private boolean mWrapContent; 577 private static final int MOTIONLESS_FALSE = 0; 578 private static final int MOTIONLESS_PENDING = 1; 579 private static final int MOTIONLESS_TRUE = 2; 580 private static final int MOTIONLESS_IGNORE = 3; 581 private int mHeldMotionless; 582 583 // whether support multi-touch 584 private boolean mSupportMultiTouch; 585 // use the framework's ScaleGestureDetector to handle multi-touch 586 private ScaleGestureDetector mScaleDetector; 587 588 // the anchor point in the document space where VIEW_SIZE_CHANGED should 589 // apply to 590 private int mAnchorX; 591 private int mAnchorY; 592 593 /* 594 * Private message ids 595 */ 596 private static final int REMEMBER_PASSWORD = 1; 597 private static final int NEVER_REMEMBER_PASSWORD = 2; 598 private static final int SWITCH_TO_SHORTPRESS = 3; 599 private static final int SWITCH_TO_LONGPRESS = 4; 600 private static final int RELEASE_SINGLE_TAP = 5; 601 private static final int REQUEST_FORM_DATA = 6; 602 private static final int RESUME_WEBCORE_PRIORITY = 7; 603 private static final int DRAG_HELD_MOTIONLESS = 8; 604 private static final int AWAKEN_SCROLL_BARS = 9; 605 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 606 607 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 608 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 609 610 /* 611 * Package message ids 612 */ 613 //! arg1=x, arg2=y 614 static final int SCROLL_TO_MSG_ID = 101; 615 static final int SCROLL_BY_MSG_ID = 102; 616 //! arg1=x, arg2=y 617 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 618 //! arg1=x, arg2=y 619 static final int SYNC_SCROLL_TO_MSG_ID = 104; 620 static final int NEW_PICTURE_MSG_ID = 105; 621 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 622 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 623 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 624 static final int UPDATE_ZOOM_RANGE = 109; 625 static final int MOVE_OUT_OF_PLUGIN = 110; 626 static final int CLEAR_TEXT_ENTRY = 111; 627 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 628 static final int SHOW_RECT_MSG_ID = 113; 629 static final int LONG_PRESS_CENTER = 114; 630 static final int PREVENT_TOUCH_ID = 115; 631 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 632 // obj=Rect in doc coordinates 633 static final int INVAL_RECT_MSG_ID = 117; 634 static final int REQUEST_KEYBOARD = 118; 635 static final int DO_MOTION_UP = 119; 636 static final int SHOW_FULLSCREEN = 120; 637 static final int HIDE_FULLSCREEN = 121; 638 static final int DOM_FOCUS_CHANGED = 122; 639 static final int IMMEDIATE_REPAINT_MSG_ID = 123; 640 static final int SET_ROOT_LAYER_MSG_ID = 124; 641 static final int RETURN_LABEL = 125; 642 static final int FIND_AGAIN = 126; 643 static final int CENTER_FIT_RECT = 127; 644 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 645 static final int SET_SCROLLBAR_MODES = 129; 646 647 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 648 private static final int LAST_PACKAGE_MSG_ID = SET_SCROLLBAR_MODES; 649 650 static final String[] HandlerPrivateDebugString = { 651 "REMEMBER_PASSWORD", // = 1; 652 "NEVER_REMEMBER_PASSWORD", // = 2; 653 "SWITCH_TO_SHORTPRESS", // = 3; 654 "SWITCH_TO_LONGPRESS", // = 4; 655 "RELEASE_SINGLE_TAP", // = 5; 656 "REQUEST_FORM_DATA", // = 6; 657 "RESUME_WEBCORE_PRIORITY", // = 7; 658 "DRAG_HELD_MOTIONLESS", // = 8; 659 "AWAKEN_SCROLL_BARS", // = 9; 660 "PREVENT_DEFAULT_TIMEOUT" // = 10; 661 }; 662 663 static final String[] HandlerPackageDebugString = { 664 "SCROLL_TO_MSG_ID", // = 101; 665 "SCROLL_BY_MSG_ID", // = 102; 666 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 667 "SYNC_SCROLL_TO_MSG_ID", // = 104; 668 "NEW_PICTURE_MSG_ID", // = 105; 669 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 670 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 671 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 672 "UPDATE_ZOOM_RANGE", // = 109; 673 "MOVE_OUT_OF_PLUGIN", // = 110; 674 "CLEAR_TEXT_ENTRY", // = 111; 675 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 676 "SHOW_RECT_MSG_ID", // = 113; 677 "LONG_PRESS_CENTER", // = 114; 678 "PREVENT_TOUCH_ID", // = 115; 679 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 680 "INVAL_RECT_MSG_ID", // = 117; 681 "REQUEST_KEYBOARD", // = 118; 682 "DO_MOTION_UP", // = 119; 683 "SHOW_FULLSCREEN", // = 120; 684 "HIDE_FULLSCREEN", // = 121; 685 "DOM_FOCUS_CHANGED", // = 122; 686 "IMMEDIATE_REPAINT_MSG_ID", // = 123; 687 "SET_ROOT_LAYER_MSG_ID", // = 124; 688 "RETURN_LABEL", // = 125; 689 "FIND_AGAIN", // = 126; 690 "CENTER_FIT_RECT", // = 127; 691 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 692 "SET_SCROLLBAR_MODES" // = 129; 693 }; 694 695 // If the site doesn't use the viewport meta tag to specify the viewport, 696 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 697 static final int DEFAULT_VIEWPORT_WIDTH = 800; 698 699 // normally we try to fit the content to the minimum preferred width 700 // calculated by the Webkit. To avoid the bad behavior when some site's 701 // minimum preferred width keeps growing when changing the viewport width or 702 // the minimum preferred width is huge, an upper limit is needed. 703 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 704 705 // default scale limit. Depending on the display density 706 private static float DEFAULT_MAX_ZOOM_SCALE; 707 private static float DEFAULT_MIN_ZOOM_SCALE; 708 // scale limit, which can be set through viewport meta tag in the web page 709 private float mMaxZoomScale; 710 private float mMinZoomScale; 711 private boolean mMinZoomScaleFixed = true; 712 713 // initial scale in percent. 0 means using default. 714 private int mInitialScaleInPercent = 0; 715 716 // while in the zoom overview mode, the page's width is fully fit to the 717 // current window. The page is alive, in another words, you can click to 718 // follow the links. Double tap will toggle between zoom overview mode and 719 // the last zoom scale. 720 boolean mInZoomOverview = false; 721 722 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 723 // engadget always have wider mContentWidth no matter what viewport size is. 724 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 725 float mTextWrapScale; 726 727 // default scale. Depending on the display density. 728 static int DEFAULT_SCALE_PERCENT; 729 private float mDefaultScale; 730 731 private static float MINIMUM_SCALE_INCREMENT = 0.01f; 732 733 // set to true temporarily during ScaleGesture triggered zoom 734 private boolean mPreviewZoomOnly = false; 735 736 // computed scale and inverse, from mZoomWidth. 737 private float mActualScale; 738 private float mInvActualScale; 739 // if this is non-zero, it is used on drawing rather than mActualScale 740 private float mZoomScale; 741 private float mInvInitialZoomScale; 742 private float mInvFinalZoomScale; 743 private int mInitialScrollX; 744 private int mInitialScrollY; 745 private long mZoomStart; 746 private static final int ZOOM_ANIMATION_LENGTH = 500; 747 748 private boolean mUserScroll = false; 749 750 private int mSnapScrollMode = SNAP_NONE; 751 private static final int SNAP_NONE = 0; 752 private static final int SNAP_LOCK = 1; // not a separate state 753 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 754 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 755 private boolean mSnapPositive; 756 757 // keep these in sync with their counterparts in WebView.cpp 758 private static final int DRAW_EXTRAS_NONE = 0; 759 private static final int DRAW_EXTRAS_FIND = 1; 760 private static final int DRAW_EXTRAS_SELECTION = 2; 761 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 762 763 // keep this in sync with WebCore:ScrollbarMode in WebKit 764 private static final int SCROLLBAR_AUTO = 0; 765 private static final int SCROLLBAR_ALWAYSOFF = 1; 766 // as we auto fade scrollbar, this is ignored. 767 private static final int SCROLLBAR_ALWAYSON = 2; 768 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 769 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 770 771 /** 772 * Max distance to overscroll by in pixels. 773 * This how far content can be pulled beyond its normal bounds by the user. 774 */ 775 private int mOverscrollDistance; 776 777 /** 778 * Max distance to overfling by in pixels. 779 * This is how far flinged content can move beyond the end of its normal bounds. 780 */ 781 private int mOverflingDistance; 782 783 /* 784 * These manage the edge glow effect when flung or pulled beyond the edges. 785 * If one is not null, all are not null. Checking one for null is as good as checking each. 786 */ 787 private EdgeGlow mEdgeGlowTop; 788 private EdgeGlow mEdgeGlowBottom; 789 private EdgeGlow mEdgeGlowLeft; 790 private EdgeGlow mEdgeGlowRight; 791 792 // Used to match key downs and key ups 793 private boolean mGotKeyDown; 794 795 /* package */ static boolean mLogEvent = true; 796 797 // for event log 798 private long mLastTouchUpTime = 0; 799 800 /** 801 * URI scheme for telephone number 802 */ 803 public static final String SCHEME_TEL = "tel:"; 804 /** 805 * URI scheme for email address 806 */ 807 public static final String SCHEME_MAILTO = "mailto:"; 808 /** 809 * URI scheme for map address 810 */ 811 public static final String SCHEME_GEO = "geo:0,0?q="; 812 813 private int mBackgroundColor = Color.WHITE; 814 815 // Used to notify listeners of a new picture. 816 private PictureListener mPictureListener; 817 /** 818 * Interface to listen for new pictures as they change. 819 */ 820 public interface PictureListener { 821 /** 822 * Notify the listener that the picture has changed. 823 * @param view The WebView that owns the picture. 824 * @param picture The new picture. 825 */ 826 public void onNewPicture(WebView view, Picture picture); 827 } 828 829 // FIXME: Want to make this public, but need to change the API file. 830 public /*static*/ class HitTestResult { 831 /** 832 * Default HitTestResult, where the target is unknown 833 */ 834 public static final int UNKNOWN_TYPE = 0; 835 /** 836 * HitTestResult for hitting a HTML::a tag 837 */ 838 public static final int ANCHOR_TYPE = 1; 839 /** 840 * HitTestResult for hitting a phone number 841 */ 842 public static final int PHONE_TYPE = 2; 843 /** 844 * HitTestResult for hitting a map address 845 */ 846 public static final int GEO_TYPE = 3; 847 /** 848 * HitTestResult for hitting an email address 849 */ 850 public static final int EMAIL_TYPE = 4; 851 /** 852 * HitTestResult for hitting an HTML::img tag 853 */ 854 public static final int IMAGE_TYPE = 5; 855 /** 856 * HitTestResult for hitting a HTML::a tag which contains HTML::img 857 */ 858 public static final int IMAGE_ANCHOR_TYPE = 6; 859 /** 860 * HitTestResult for hitting a HTML::a tag with src=http 861 */ 862 public static final int SRC_ANCHOR_TYPE = 7; 863 /** 864 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 865 */ 866 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 867 /** 868 * HitTestResult for hitting an edit text area 869 */ 870 public static final int EDIT_TEXT_TYPE = 9; 871 872 private int mType; 873 private String mExtra; 874 875 HitTestResult() { 876 mType = UNKNOWN_TYPE; 877 } 878 879 private void setType(int type) { 880 mType = type; 881 } 882 883 private void setExtra(String extra) { 884 mExtra = extra; 885 } 886 887 public int getType() { 888 return mType; 889 } 890 891 public String getExtra() { 892 return mExtra; 893 } 894 } 895 896 // The View containing the zoom controls 897 private ExtendedZoomControls mZoomControls; 898 private Runnable mZoomControlRunnable; 899 900 // mZoomButtonsController will be lazy initialized in 901 // getZoomButtonsController() to get better performance. 902 private ZoomButtonsController mZoomButtonsController; 903 904 // These keep track of the center point of the zoom. They are used to 905 // determine the point around which we should zoom. 906 private float mZoomCenterX; 907 private float mZoomCenterY; 908 909 private ZoomButtonsController.OnZoomListener mZoomListener = 910 new ZoomButtonsController.OnZoomListener() { 911 912 public void onVisibilityChanged(boolean visible) { 913 if (visible) { 914 switchOutDrawHistory(); 915 // Bring back the hidden zoom controls. 916 mZoomButtonsController.getZoomControls().setVisibility( 917 View.VISIBLE); 918 updateZoomButtonsEnabled(); 919 } 920 } 921 922 public void onZoom(boolean zoomIn) { 923 if (zoomIn) { 924 zoomIn(); 925 } else { 926 zoomOut(); 927 } 928 929 updateZoomButtonsEnabled(); 930 } 931 }; 932 933 /** 934 * Construct a new WebView with a Context object. 935 * @param context A Context object used to access application assets. 936 */ 937 public WebView(Context context) { 938 this(context, null); 939 } 940 941 /** 942 * Construct a new WebView with layout parameters. 943 * @param context A Context object used to access application assets. 944 * @param attrs An AttributeSet passed to our parent. 945 */ 946 public WebView(Context context, AttributeSet attrs) { 947 this(context, attrs, com.android.internal.R.attr.webViewStyle); 948 } 949 950 /** 951 * Construct a new WebView with layout parameters and a default style. 952 * @param context A Context object used to access application assets. 953 * @param attrs An AttributeSet passed to our parent. 954 * @param defStyle The default style resource ID. 955 */ 956 public WebView(Context context, AttributeSet attrs, int defStyle) { 957 this(context, attrs, defStyle, null); 958 } 959 960 /** 961 * Construct a new WebView with layout parameters, a default style and a set 962 * of custom Javscript interfaces to be added to the WebView at initialization 963 * time. This guarantees that these interfaces will be available when the JS 964 * context is initialized. 965 * @param context A Context object used to access application assets. 966 * @param attrs An AttributeSet passed to our parent. 967 * @param defStyle The default style resource ID. 968 * @param javascriptInterfaces is a Map of intareface names, as keys, and 969 * object implementing those interfaces, as values. 970 * @hide pending API council approval. 971 */ 972 protected WebView(Context context, AttributeSet attrs, int defStyle, 973 Map<String, Object> javascriptInterfaces) { 974 super(context, attrs, defStyle); 975 init(); 976 977 mCallbackProxy = new CallbackProxy(context, this); 978 mViewManager = new ViewManager(this); 979 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 980 mDatabase = WebViewDatabase.getInstance(context); 981 mScroller = new OverScroller(context); 982 983 updateMultiTouchSupport(context); 984 } 985 986 void updateMultiTouchSupport(Context context) { 987 WebSettings settings = getSettings(); 988 final PackageManager pm = context.getPackageManager(); 989 mSupportMultiTouch = pm.hasSystemFeature(PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 990 && settings.supportZoom() && settings.getBuiltInZoomControls(); 991 mAllowPanAndScale = pm.hasSystemFeature( 992 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT); 993 if (mSupportMultiTouch && (mScaleDetector == null)) { 994 mScaleDetector = new ScaleGestureDetector(context, 995 new ScaleDetectorListener()); 996 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 997 mScaleDetector = null; 998 } 999 } 1000 1001 private void updateZoomButtonsEnabled() { 1002 if (mZoomButtonsController == null) return; 1003 boolean canZoomIn = mActualScale < mMaxZoomScale; 1004 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 1005 if (!canZoomIn && !canZoomOut) { 1006 // Hide the zoom in and out buttons, as well as the fit to page 1007 // button, if the page cannot zoom 1008 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 1009 } else { 1010 // Set each one individually, as a page may be able to zoom in 1011 // or out. 1012 mZoomButtonsController.setZoomInEnabled(canZoomIn); 1013 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 1014 } 1015 } 1016 1017 private void init() { 1018 setWillNotDraw(false); 1019 setFocusable(true); 1020 setFocusableInTouchMode(true); 1021 setClickable(true); 1022 setLongClickable(true); 1023 1024 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1025 int slop = configuration.getScaledTouchSlop(); 1026 mTouchSlopSquare = slop * slop; 1027 mMinLockSnapReverseDistance = slop; 1028 slop = configuration.getScaledDoubleTapSlop(); 1029 mDoubleTapSlopSquare = slop * slop; 1030 final float density = getContext().getResources().getDisplayMetrics().density; 1031 // use one line height, 16 based on our current default font, for how 1032 // far we allow a touch be away from the edge of a link 1033 mNavSlop = (int) (16 * density); 1034 // density adjusted scale factors 1035 DEFAULT_SCALE_PERCENT = (int) (100 * density); 1036 mDefaultScale = density; 1037 mActualScale = density; 1038 mInvActualScale = 1 / density; 1039 mTextWrapScale = density; 1040 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 1041 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 1042 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 1043 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 1044 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1045 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1046 mOverflingDistance = configuration.getScaledOverflingDistance(); 1047 } 1048 1049 @Override 1050 public void setOverScrollMode(int mode) { 1051 super.setOverScrollMode(mode); 1052 if (mode != OVER_SCROLL_NEVER) { 1053 if (mEdgeGlowTop == null) { 1054 final Resources res = getContext().getResources(); 1055 final Drawable edge = res.getDrawable(R.drawable.overscroll_edge); 1056 final Drawable glow = res.getDrawable(R.drawable.overscroll_glow); 1057 mEdgeGlowTop = new EdgeGlow(edge, glow); 1058 mEdgeGlowBottom = new EdgeGlow(edge, glow); 1059 mEdgeGlowLeft = new EdgeGlow(edge, glow); 1060 mEdgeGlowRight = new EdgeGlow(edge, glow); 1061 } 1062 } else { 1063 mEdgeGlowTop = null; 1064 mEdgeGlowBottom = null; 1065 mEdgeGlowLeft = null; 1066 mEdgeGlowRight = null; 1067 } 1068 } 1069 1070 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1071 final float density = getContext().getResources().getDisplayMetrics().density 1072 * 100 / zoomDensity; 1073 if (Math.abs(density - mDefaultScale) > 0.01) { 1074 float scaleFactor = density / mDefaultScale; 1075 // adjust the limits 1076 mNavSlop = (int) (16 * density); 1077 DEFAULT_SCALE_PERCENT = (int) (100 * density); 1078 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 1079 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 1080 mDefaultScale = density; 1081 mMaxZoomScale *= scaleFactor; 1082 mMinZoomScale *= scaleFactor; 1083 setNewZoomScale(mActualScale * scaleFactor, true, false); 1084 } 1085 } 1086 1087 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1088 String password, final Message resumeMsg) { 1089 boolean rVal = false; 1090 if (resumeMsg == null) { 1091 // null resumeMsg implies saving password silently 1092 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1093 } else { 1094 final Message remember = mPrivateHandler.obtainMessage( 1095 REMEMBER_PASSWORD); 1096 remember.getData().putString("host", schemePlusHost); 1097 remember.getData().putString("username", username); 1098 remember.getData().putString("password", password); 1099 remember.obj = resumeMsg; 1100 1101 final Message neverRemember = mPrivateHandler.obtainMessage( 1102 NEVER_REMEMBER_PASSWORD); 1103 neverRemember.getData().putString("host", schemePlusHost); 1104 neverRemember.getData().putString("username", username); 1105 neverRemember.getData().putString("password", password); 1106 neverRemember.obj = resumeMsg; 1107 1108 new AlertDialog.Builder(getContext()) 1109 .setTitle(com.android.internal.R.string.save_password_label) 1110 .setMessage(com.android.internal.R.string.save_password_message) 1111 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1112 new DialogInterface.OnClickListener() { 1113 public void onClick(DialogInterface dialog, int which) { 1114 resumeMsg.sendToTarget(); 1115 } 1116 }) 1117 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1118 new DialogInterface.OnClickListener() { 1119 public void onClick(DialogInterface dialog, int which) { 1120 remember.sendToTarget(); 1121 } 1122 }) 1123 .setNegativeButton(com.android.internal.R.string.save_password_never, 1124 new DialogInterface.OnClickListener() { 1125 public void onClick(DialogInterface dialog, int which) { 1126 neverRemember.sendToTarget(); 1127 } 1128 }) 1129 .setOnCancelListener(new OnCancelListener() { 1130 public void onCancel(DialogInterface dialog) { 1131 resumeMsg.sendToTarget(); 1132 } 1133 }).show(); 1134 // Return true so that WebViewCore will pause while the dialog is 1135 // up. 1136 rVal = true; 1137 } 1138 return rVal; 1139 } 1140 1141 @Override 1142 public void setScrollBarStyle(int style) { 1143 if (style == View.SCROLLBARS_INSIDE_INSET 1144 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1145 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1146 } else { 1147 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1148 } 1149 super.setScrollBarStyle(style); 1150 } 1151 1152 /** 1153 * Specify whether the horizontal scrollbar has overlay style. 1154 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1155 */ 1156 public void setHorizontalScrollbarOverlay(boolean overlay) { 1157 mOverlayHorizontalScrollbar = overlay; 1158 } 1159 1160 /** 1161 * Specify whether the vertical scrollbar has overlay style. 1162 * @param overlay TRUE if vertical scrollbar should have overlay style. 1163 */ 1164 public void setVerticalScrollbarOverlay(boolean overlay) { 1165 mOverlayVerticalScrollbar = overlay; 1166 } 1167 1168 /** 1169 * Return whether horizontal scrollbar has overlay style 1170 * @return TRUE if horizontal scrollbar has overlay style. 1171 */ 1172 public boolean overlayHorizontalScrollbar() { 1173 return mOverlayHorizontalScrollbar; 1174 } 1175 1176 /** 1177 * Return whether vertical scrollbar has overlay style 1178 * @return TRUE if vertical scrollbar has overlay style. 1179 */ 1180 public boolean overlayVerticalScrollbar() { 1181 return mOverlayVerticalScrollbar; 1182 } 1183 1184 /* 1185 * Return the width of the view where the content of WebView should render 1186 * to. 1187 * Note: this can be called from WebCoreThread. 1188 */ 1189 /* package */ int getViewWidth() { 1190 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1191 return getWidth(); 1192 } else { 1193 return getWidth() - getVerticalScrollbarWidth(); 1194 } 1195 } 1196 1197 /* 1198 * returns the height of the titlebarview (if any). Does not care about 1199 * scrolling 1200 */ 1201 private int getTitleHeight() { 1202 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1203 } 1204 1205 /* 1206 * Return the amount of the titlebarview (if any) that is visible 1207 */ 1208 private int getVisibleTitleHeight() { 1209 // need to restrict mScrollY due to over scroll 1210 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1211 } 1212 1213 /* 1214 * Return the height of the view where the content of WebView should render 1215 * to. Note that this excludes mTitleBar, if there is one. 1216 * Note: this can be called from WebCoreThread. 1217 */ 1218 /* package */ int getViewHeight() { 1219 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1220 } 1221 1222 private int getViewHeightWithTitle() { 1223 int height = getHeight(); 1224 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1225 height -= getHorizontalScrollbarHeight(); 1226 } 1227 return height; 1228 } 1229 1230 /** 1231 * @return The SSL certificate for the main top-level page or null if 1232 * there is no certificate (the site is not secure). 1233 */ 1234 public SslCertificate getCertificate() { 1235 return mCertificate; 1236 } 1237 1238 /** 1239 * Sets the SSL certificate for the main top-level page. 1240 */ 1241 public void setCertificate(SslCertificate certificate) { 1242 if (DebugFlags.WEB_VIEW) { 1243 Log.v(LOGTAG, "setCertificate=" + certificate); 1244 } 1245 // here, the certificate can be null (if the site is not secure) 1246 mCertificate = certificate; 1247 } 1248 1249 //------------------------------------------------------------------------- 1250 // Methods called by activity 1251 //------------------------------------------------------------------------- 1252 1253 /** 1254 * Save the username and password for a particular host in the WebView's 1255 * internal database. 1256 * @param host The host that required the credentials. 1257 * @param username The username for the given host. 1258 * @param password The password for the given host. 1259 */ 1260 public void savePassword(String host, String username, String password) { 1261 mDatabase.setUsernamePassword(host, username, password); 1262 } 1263 1264 /** 1265 * Set the HTTP authentication credentials for a given host and realm. 1266 * 1267 * @param host The host for the credentials. 1268 * @param realm The realm for the credentials. 1269 * @param username The username for the password. If it is null, it means 1270 * password can't be saved. 1271 * @param password The password 1272 */ 1273 public void setHttpAuthUsernamePassword(String host, String realm, 1274 String username, String password) { 1275 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1276 } 1277 1278 /** 1279 * Retrieve the HTTP authentication username and password for a given 1280 * host & realm pair 1281 * 1282 * @param host The host for which the credentials apply. 1283 * @param realm The realm for which the credentials apply. 1284 * @return String[] if found, String[0] is username, which can be null and 1285 * String[1] is password. Return null if it can't find anything. 1286 */ 1287 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1288 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1289 } 1290 1291 private void clearHelpers() { 1292 clearTextEntry(false); 1293 selectionDone(); 1294 } 1295 1296 /** 1297 * Destroy the internal state of the WebView. This method should be called 1298 * after the WebView has been removed from the view system. No other 1299 * methods may be called on a WebView after destroy. 1300 */ 1301 public void destroy() { 1302 clearHelpers(); 1303 if (mListBoxDialog != null) { 1304 mListBoxDialog.dismiss(); 1305 mListBoxDialog = null; 1306 } 1307 if (mWebViewCore != null) { 1308 // Set the handlers to null before destroying WebViewCore so no 1309 // more messages will be posted. 1310 mCallbackProxy.setWebViewClient(null); 1311 mCallbackProxy.setWebChromeClient(null); 1312 // Tell WebViewCore to destroy itself 1313 synchronized (this) { 1314 WebViewCore webViewCore = mWebViewCore; 1315 mWebViewCore = null; // prevent using partial webViewCore 1316 webViewCore.destroy(); 1317 } 1318 // Remove any pending messages that might not be serviced yet. 1319 mPrivateHandler.removeCallbacksAndMessages(null); 1320 mCallbackProxy.removeCallbacksAndMessages(null); 1321 // Wake up the WebCore thread just in case it is waiting for a 1322 // javascript dialog. 1323 synchronized (mCallbackProxy) { 1324 mCallbackProxy.notify(); 1325 } 1326 } 1327 if (mNativeClass != 0) { 1328 nativeDestroy(); 1329 mNativeClass = 0; 1330 } 1331 } 1332 1333 /** 1334 * Enables platform notifications of data state and proxy changes. 1335 */ 1336 public static void enablePlatformNotifications() { 1337 Network.enablePlatformNotifications(); 1338 } 1339 1340 /** 1341 * If platform notifications are enabled, this should be called 1342 * from the Activity's onPause() or onStop(). 1343 */ 1344 public static void disablePlatformNotifications() { 1345 Network.disablePlatformNotifications(); 1346 } 1347 1348 /** 1349 * Sets JavaScript engine flags. 1350 * 1351 * @param flags JS engine flags in a String 1352 * 1353 * @hide pending API solidification 1354 */ 1355 public void setJsFlags(String flags) { 1356 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1357 } 1358 1359 /** 1360 * Inform WebView of the network state. This is used to set 1361 * the javascript property window.navigator.isOnline and 1362 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1363 * @param networkUp boolean indicating if network is available 1364 */ 1365 public void setNetworkAvailable(boolean networkUp) { 1366 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1367 networkUp ? 1 : 0, 0); 1368 } 1369 1370 /** 1371 * Inform WebView about the current network type. 1372 * {@hide} 1373 */ 1374 public void setNetworkType(String type, String subtype) { 1375 Map<String, String> map = new HashMap<String, String>(); 1376 map.put("type", type); 1377 map.put("subtype", subtype); 1378 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1379 } 1380 /** 1381 * Save the state of this WebView used in 1382 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1383 * method no longer stores the display data for this WebView. The previous 1384 * behavior could potentially leak files if {@link #restoreState} was never 1385 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1386 * and restoring the display data. 1387 * @param outState The Bundle to store the WebView state. 1388 * @return The same copy of the back/forward list used to save the state. If 1389 * saveState fails, the returned list will be null. 1390 * @see #savePicture 1391 * @see #restorePicture 1392 */ 1393 public WebBackForwardList saveState(Bundle outState) { 1394 if (outState == null) { 1395 return null; 1396 } 1397 // We grab a copy of the back/forward list because a client of WebView 1398 // may have invalidated the history list by calling clearHistory. 1399 WebBackForwardList list = copyBackForwardList(); 1400 final int currentIndex = list.getCurrentIndex(); 1401 final int size = list.getSize(); 1402 // We should fail saving the state if the list is empty or the index is 1403 // not in a valid range. 1404 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1405 return null; 1406 } 1407 outState.putInt("index", currentIndex); 1408 // FIXME: This should just be a byte[][] instead of ArrayList but 1409 // Parcel.java does not have the code to handle multi-dimensional 1410 // arrays. 1411 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1412 for (int i = 0; i < size; i++) { 1413 WebHistoryItem item = list.getItemAtIndex(i); 1414 if (null == item) { 1415 // FIXME: this shouldn't happen 1416 // need to determine how item got set to null 1417 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1418 return null; 1419 } 1420 byte[] data = item.getFlattenedData(); 1421 if (data == null) { 1422 // It would be very odd to not have any data for a given history 1423 // item. And we will fail to rebuild the history list without 1424 // flattened data. 1425 return null; 1426 } 1427 history.add(data); 1428 } 1429 outState.putSerializable("history", history); 1430 if (mCertificate != null) { 1431 outState.putBundle("certificate", 1432 SslCertificate.saveState(mCertificate)); 1433 } 1434 return list; 1435 } 1436 1437 /** 1438 * Save the current display data to the Bundle given. Used in conjunction 1439 * with {@link #saveState}. 1440 * @param b A Bundle to store the display data. 1441 * @param dest The file to store the serialized picture data. Will be 1442 * overwritten with this WebView's picture data. 1443 * @return True if the picture was successfully saved. 1444 */ 1445 public boolean savePicture(Bundle b, final File dest) { 1446 if (dest == null || b == null) { 1447 return false; 1448 } 1449 final Picture p = capturePicture(); 1450 // Use a temporary file while writing to ensure the destination file 1451 // contains valid data. 1452 final File temp = new File(dest.getPath() + ".writing"); 1453 new Thread(new Runnable() { 1454 public void run() { 1455 FileOutputStream out = null; 1456 try { 1457 out = new FileOutputStream(temp); 1458 p.writeToStream(out); 1459 // Writing the picture succeeded, rename the temporary file 1460 // to the destination. 1461 temp.renameTo(dest); 1462 } catch (Exception e) { 1463 // too late to do anything about it. 1464 } finally { 1465 if (out != null) { 1466 try { 1467 out.close(); 1468 } catch (Exception e) { 1469 // Can't do anything about that 1470 } 1471 } 1472 temp.delete(); 1473 } 1474 } 1475 }).start(); 1476 // now update the bundle 1477 b.putInt("scrollX", mScrollX); 1478 b.putInt("scrollY", mScrollY); 1479 b.putFloat("scale", mActualScale); 1480 b.putFloat("textwrapScale", mTextWrapScale); 1481 b.putBoolean("overview", mInZoomOverview); 1482 return true; 1483 } 1484 1485 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1486 int sx = b.getInt("scrollX", 0); 1487 int sy = b.getInt("scrollY", 0); 1488 float scale = b.getFloat("scale", 1.0f); 1489 mDrawHistory = true; 1490 mHistoryPicture = p; 1491 mScrollX = sx; 1492 mScrollY = sy; 1493 mHistoryWidth = Math.round(p.getWidth() * scale); 1494 mHistoryHeight = Math.round(p.getHeight() * scale); 1495 // as getWidth() / getHeight() of the view are not available yet, set up 1496 // mActualScale, so that when onSizeChanged() is called, the rest will 1497 // be set correctly 1498 mActualScale = scale; 1499 mInvActualScale = 1 / scale; 1500 mTextWrapScale = b.getFloat("textwrapScale", scale); 1501 mInZoomOverview = b.getBoolean("overview"); 1502 invalidate(); 1503 } 1504 1505 /** 1506 * Restore the display data that was save in {@link #savePicture}. Used in 1507 * conjunction with {@link #restoreState}. 1508 * @param b A Bundle containing the saved display data. 1509 * @param src The file where the picture data was stored. 1510 * @return True if the picture was successfully restored. 1511 */ 1512 public boolean restorePicture(Bundle b, File src) { 1513 if (src == null || b == null) { 1514 return false; 1515 } 1516 if (!src.exists()) { 1517 return false; 1518 } 1519 try { 1520 final FileInputStream in = new FileInputStream(src); 1521 final Bundle copy = new Bundle(b); 1522 new Thread(new Runnable() { 1523 public void run() { 1524 try { 1525 final Picture p = Picture.createFromStream(in); 1526 if (p != null) { 1527 // Post a runnable on the main thread to update the 1528 // history picture fields. 1529 mPrivateHandler.post(new Runnable() { 1530 public void run() { 1531 restoreHistoryPictureFields(p, copy); 1532 } 1533 }); 1534 } 1535 } finally { 1536 try { 1537 in.close(); 1538 } catch (Exception e) { 1539 // Nothing we can do now. 1540 } 1541 } 1542 } 1543 }).start(); 1544 } catch (FileNotFoundException e){ 1545 e.printStackTrace(); 1546 } 1547 return true; 1548 } 1549 1550 /** 1551 * Restore the state of this WebView from the given map used in 1552 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1553 * be called to restore the state of the WebView before using the object. If 1554 * it is called after the WebView has had a chance to build state (load 1555 * pages, create a back/forward list, etc.) there may be undesirable 1556 * side-effects. Please note that this method no longer restores the 1557 * display data for this WebView. See {@link #savePicture} and {@link 1558 * #restorePicture} for saving and restoring the display data. 1559 * @param inState The incoming Bundle of state. 1560 * @return The restored back/forward list or null if restoreState failed. 1561 * @see #savePicture 1562 * @see #restorePicture 1563 */ 1564 public WebBackForwardList restoreState(Bundle inState) { 1565 WebBackForwardList returnList = null; 1566 if (inState == null) { 1567 return returnList; 1568 } 1569 if (inState.containsKey("index") && inState.containsKey("history")) { 1570 mCertificate = SslCertificate.restoreState( 1571 inState.getBundle("certificate")); 1572 1573 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1574 final int index = inState.getInt("index"); 1575 // We can't use a clone of the list because we need to modify the 1576 // shared copy, so synchronize instead to prevent concurrent 1577 // modifications. 1578 synchronized (list) { 1579 final List<byte[]> history = 1580 (List<byte[]>) inState.getSerializable("history"); 1581 final int size = history.size(); 1582 // Check the index bounds so we don't crash in native code while 1583 // restoring the history index. 1584 if (index < 0 || index >= size) { 1585 return null; 1586 } 1587 for (int i = 0; i < size; i++) { 1588 byte[] data = history.remove(0); 1589 if (data == null) { 1590 // If we somehow have null data, we cannot reconstruct 1591 // the item and thus our history list cannot be rebuilt. 1592 return null; 1593 } 1594 WebHistoryItem item = new WebHistoryItem(data); 1595 list.addHistoryItem(item); 1596 } 1597 // Grab the most recent copy to return to the caller. 1598 returnList = copyBackForwardList(); 1599 // Update the copy to have the correct index. 1600 returnList.setCurrentIndex(index); 1601 } 1602 // Remove all pending messages because we are restoring previous 1603 // state. 1604 mWebViewCore.removeMessages(); 1605 // Send a restore state message. 1606 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1607 } 1608 return returnList; 1609 } 1610 1611 /** 1612 * Load the given url with the extra headers. 1613 * @param url The url of the resource to load. 1614 * @param extraHeaders The extra headers sent with this url. This should not 1615 * include the common headers like "user-agent". If it does, it 1616 * will be replaced by the intrinsic value of the WebView. 1617 */ 1618 public void loadUrl(String url, Map<String, String> extraHeaders) { 1619 switchOutDrawHistory(); 1620 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1621 arg.mUrl = url; 1622 arg.mExtraHeaders = extraHeaders; 1623 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1624 clearHelpers(); 1625 } 1626 1627 /** 1628 * Load the given url. 1629 * @param url The url of the resource to load. 1630 */ 1631 public void loadUrl(String url) { 1632 if (url == null) { 1633 return; 1634 } 1635 loadUrl(url, null); 1636 } 1637 1638 /** 1639 * Load the url with postData using "POST" method into the WebView. If url 1640 * is not a network url, it will be loaded with {link 1641 * {@link #loadUrl(String)} instead. 1642 * 1643 * @param url The url of the resource to load. 1644 * @param postData The data will be passed to "POST" request. 1645 */ 1646 public void postUrl(String url, byte[] postData) { 1647 if (URLUtil.isNetworkUrl(url)) { 1648 switchOutDrawHistory(); 1649 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1650 arg.mUrl = url; 1651 arg.mPostData = postData; 1652 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1653 clearHelpers(); 1654 } else { 1655 loadUrl(url); 1656 } 1657 } 1658 1659 /** 1660 * Load the given data into the WebView. This will load the data into 1661 * WebView using the data: scheme. Content loaded through this mechanism 1662 * does not have the ability to load content from the network. 1663 * @param data A String of data in the given encoding. The date must 1664 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1665 * %27, %3f respectively. 1666 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1667 * @param encoding The encoding of the data. i.e. utf-8, base64 1668 */ 1669 public void loadData(String data, String mimeType, String encoding) { 1670 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1671 } 1672 1673 /** 1674 * Load the given data into the WebView, use the provided URL as the base 1675 * URL for the content. The base URL is the URL that represents the page 1676 * that is loaded through this interface. As such, it is used to resolve any 1677 * relative URLs. The historyUrl is used for the history entry. 1678 * <p> 1679 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1680 * files through "file:///android_asset/" for the sub resources is more 1681 * restricted. If you provide null or empty string as baseUrl, you won't be 1682 * able to access asset files. If the baseUrl is anything other than 1683 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1684 * sub resources. 1685 * 1686 * @param baseUrl Url to resolve relative paths with, if null defaults to 1687 * "about:blank" 1688 * @param data A String of data in the given encoding. 1689 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1690 * defaults to "text/html" 1691 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1692 * @param historyUrl URL to use as the history entry. Can be null. 1693 */ 1694 public void loadDataWithBaseURL(String baseUrl, String data, 1695 String mimeType, String encoding, String historyUrl) { 1696 1697 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1698 loadData(data, mimeType, encoding); 1699 return; 1700 } 1701 switchOutDrawHistory(); 1702 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1703 arg.mBaseUrl = baseUrl; 1704 arg.mData = data; 1705 arg.mMimeType = mimeType; 1706 arg.mEncoding = encoding; 1707 arg.mHistoryUrl = historyUrl; 1708 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1709 clearHelpers(); 1710 } 1711 1712 /** 1713 * Stop the current load. 1714 */ 1715 public void stopLoading() { 1716 // TODO: should we clear all the messages in the queue before sending 1717 // STOP_LOADING? 1718 switchOutDrawHistory(); 1719 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1720 } 1721 1722 /** 1723 * Reload the current url. 1724 */ 1725 public void reload() { 1726 clearHelpers(); 1727 switchOutDrawHistory(); 1728 mWebViewCore.sendMessage(EventHub.RELOAD); 1729 } 1730 1731 /** 1732 * Return true if this WebView has a back history item. 1733 * @return True iff this WebView has a back history item. 1734 */ 1735 public boolean canGoBack() { 1736 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1737 synchronized (l) { 1738 if (l.getClearPending()) { 1739 return false; 1740 } else { 1741 return l.getCurrentIndex() > 0; 1742 } 1743 } 1744 } 1745 1746 /** 1747 * Go back in the history of this WebView. 1748 */ 1749 public void goBack() { 1750 goBackOrForward(-1); 1751 } 1752 1753 /** 1754 * Return true if this WebView has a forward history item. 1755 * @return True iff this Webview has a forward history item. 1756 */ 1757 public boolean canGoForward() { 1758 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1759 synchronized (l) { 1760 if (l.getClearPending()) { 1761 return false; 1762 } else { 1763 return l.getCurrentIndex() < l.getSize() - 1; 1764 } 1765 } 1766 } 1767 1768 /** 1769 * Go forward in the history of this WebView. 1770 */ 1771 public void goForward() { 1772 goBackOrForward(1); 1773 } 1774 1775 /** 1776 * Return true if the page can go back or forward the given 1777 * number of steps. 1778 * @param steps The negative or positive number of steps to move the 1779 * history. 1780 */ 1781 public boolean canGoBackOrForward(int steps) { 1782 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1783 synchronized (l) { 1784 if (l.getClearPending()) { 1785 return false; 1786 } else { 1787 int newIndex = l.getCurrentIndex() + steps; 1788 return newIndex >= 0 && newIndex < l.getSize(); 1789 } 1790 } 1791 } 1792 1793 /** 1794 * Go to the history item that is the number of steps away from 1795 * the current item. Steps is negative if backward and positive 1796 * if forward. 1797 * @param steps The number of steps to take back or forward in the back 1798 * forward list. 1799 */ 1800 public void goBackOrForward(int steps) { 1801 goBackOrForward(steps, false); 1802 } 1803 1804 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1805 if (steps != 0) { 1806 clearHelpers(); 1807 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1808 ignoreSnapshot ? 1 : 0); 1809 } 1810 } 1811 1812 private boolean extendScroll(int y) { 1813 int finalY = mScroller.getFinalY(); 1814 int newY = pinLocY(finalY + y); 1815 if (newY == finalY) return false; 1816 mScroller.setFinalY(newY); 1817 mScroller.extendDuration(computeDuration(0, y)); 1818 return true; 1819 } 1820 1821 /** 1822 * Scroll the contents of the view up by half the view size 1823 * @param top true to jump to the top of the page 1824 * @return true if the page was scrolled 1825 */ 1826 public boolean pageUp(boolean top) { 1827 if (mNativeClass == 0) { 1828 return false; 1829 } 1830 nativeClearCursor(); // start next trackball movement from page edge 1831 if (top) { 1832 // go to the top of the document 1833 return pinScrollTo(mScrollX, 0, true, 0); 1834 } 1835 // Page up 1836 int h = getHeight(); 1837 int y; 1838 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1839 y = -h + PAGE_SCROLL_OVERLAP; 1840 } else { 1841 y = -h / 2; 1842 } 1843 mUserScroll = true; 1844 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1845 : extendScroll(y); 1846 } 1847 1848 /** 1849 * Scroll the contents of the view down by half the page size 1850 * @param bottom true to jump to bottom of page 1851 * @return true if the page was scrolled 1852 */ 1853 public boolean pageDown(boolean bottom) { 1854 if (mNativeClass == 0) { 1855 return false; 1856 } 1857 nativeClearCursor(); // start next trackball movement from page edge 1858 if (bottom) { 1859 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 1860 } 1861 // Page down. 1862 int h = getHeight(); 1863 int y; 1864 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1865 y = h - PAGE_SCROLL_OVERLAP; 1866 } else { 1867 y = h / 2; 1868 } 1869 mUserScroll = true; 1870 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1871 : extendScroll(y); 1872 } 1873 1874 /** 1875 * Clear the view so that onDraw() will draw nothing but white background, 1876 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1877 */ 1878 public void clearView() { 1879 mContentWidth = 0; 1880 mContentHeight = 0; 1881 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1882 } 1883 1884 /** 1885 * Return a new picture that captures the current display of the webview. 1886 * This is a copy of the display, and will be unaffected if the webview 1887 * later loads a different URL. 1888 * 1889 * @return a picture containing the current contents of the view. Note this 1890 * picture is of the entire document, and is not restricted to the 1891 * bounds of the view. 1892 */ 1893 public Picture capturePicture() { 1894 if (null == mWebViewCore) return null; // check for out of memory tab 1895 return mWebViewCore.copyContentPicture(); 1896 } 1897 1898 /** 1899 * Return true if the browser is displaying a TextView for text input. 1900 */ 1901 private boolean inEditingMode() { 1902 return mWebTextView != null && mWebTextView.getParent() != null; 1903 } 1904 1905 /** 1906 * Remove the WebTextView. 1907 * @param disableFocusController If true, send a message to webkit 1908 * disabling the focus controller, so the caret stops blinking. 1909 */ 1910 private void clearTextEntry(boolean disableFocusController) { 1911 if (inEditingMode()) { 1912 mWebTextView.remove(); 1913 if (disableFocusController) { 1914 setFocusControllerInactive(); 1915 } 1916 } 1917 } 1918 1919 /** 1920 * Return the current scale of the WebView 1921 * @return The current scale. 1922 */ 1923 public float getScale() { 1924 return mActualScale; 1925 } 1926 1927 /** 1928 * Set the initial scale for the WebView. 0 means default. If 1929 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1930 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1931 * WebView starts will this value as initial scale. 1932 * 1933 * @param scaleInPercent The initial scale in percent. 1934 */ 1935 public void setInitialScale(int scaleInPercent) { 1936 mInitialScaleInPercent = scaleInPercent; 1937 } 1938 1939 /** 1940 * Invoke the graphical zoom picker widget for this WebView. This will 1941 * result in the zoom widget appearing on the screen to control the zoom 1942 * level of this WebView. 1943 */ 1944 public void invokeZoomPicker() { 1945 if (!getSettings().supportZoom()) { 1946 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1947 return; 1948 } 1949 clearTextEntry(false); 1950 if (getSettings().getBuiltInZoomControls()) { 1951 getZoomButtonsController().setVisible(true); 1952 } else { 1953 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1954 mPrivateHandler.postDelayed(mZoomControlRunnable, 1955 ZOOM_CONTROLS_TIMEOUT); 1956 } 1957 } 1958 1959 /** 1960 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1961 * is found and the anchor has a non-javascript url, the HitTestResult type 1962 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1963 * anchor does not have a url or if it is a javascript url, the type will 1964 * be UNKNOWN_TYPE and the url has to be retrieved through 1965 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1966 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1967 * the "extra" field. A type of 1968 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1969 * a child node. If a phone number is found, the HitTestResult type is set 1970 * to PHONE_TYPE and the phone number is set in the "extra" field of 1971 * HitTestResult. If a map address is found, the HitTestResult type is set 1972 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1973 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1974 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1975 * HitTestResult type is set to UNKNOWN_TYPE. 1976 */ 1977 public HitTestResult getHitTestResult() { 1978 if (mNativeClass == 0) { 1979 return null; 1980 } 1981 1982 HitTestResult result = new HitTestResult(); 1983 if (nativeHasCursorNode()) { 1984 if (nativeCursorIsTextInput()) { 1985 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1986 } else { 1987 String text = nativeCursorText(); 1988 if (text != null) { 1989 if (text.startsWith(SCHEME_TEL)) { 1990 result.setType(HitTestResult.PHONE_TYPE); 1991 result.setExtra(text.substring(SCHEME_TEL.length())); 1992 } else if (text.startsWith(SCHEME_MAILTO)) { 1993 result.setType(HitTestResult.EMAIL_TYPE); 1994 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1995 } else if (text.startsWith(SCHEME_GEO)) { 1996 result.setType(HitTestResult.GEO_TYPE); 1997 result.setExtra(URLDecoder.decode(text 1998 .substring(SCHEME_GEO.length()))); 1999 } else if (nativeCursorIsAnchor()) { 2000 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2001 result.setExtra(text); 2002 } 2003 } 2004 } 2005 } 2006 int type = result.getType(); 2007 if (type == HitTestResult.UNKNOWN_TYPE 2008 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2009 // Now check to see if it is an image. 2010 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2011 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2012 String text = nativeImageURI(contentX, contentY); 2013 if (text != null) { 2014 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2015 HitTestResult.IMAGE_TYPE : 2016 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2017 result.setExtra(text); 2018 } 2019 } 2020 return result; 2021 } 2022 2023 // Called by JNI when the DOM has changed the focus. Clear the focus so 2024 // that new keys will go to the newly focused field 2025 private void domChangedFocus() { 2026 if (inEditingMode()) { 2027 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2028 } 2029 } 2030 /** 2031 * Request the href of an anchor element due to getFocusNodePath returning 2032 * "href." If hrefMsg is null, this method returns immediately and does not 2033 * dispatch hrefMsg to its target. 2034 * 2035 * @param hrefMsg This message will be dispatched with the result of the 2036 * request as the data member with "url" as key. The result can 2037 * be null. 2038 */ 2039 // FIXME: API change required to change the name of this function. We now 2040 // look at the cursor node, and not the focus node. Also, what is 2041 // getFocusNodePath? 2042 public void requestFocusNodeHref(Message hrefMsg) { 2043 if (hrefMsg == null || mNativeClass == 0) { 2044 return; 2045 } 2046 if (nativeCursorIsAnchor()) { 2047 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2048 nativeCursorFramePointer(), nativeCursorNodePointer(), 2049 hrefMsg); 2050 } 2051 } 2052 2053 /** 2054 * Request the url of the image last touched by the user. msg will be sent 2055 * to its target with a String representing the url as its object. 2056 * 2057 * @param msg This message will be dispatched with the result of the request 2058 * as the data member with "url" as key. The result can be null. 2059 */ 2060 public void requestImageRef(Message msg) { 2061 if (0 == mNativeClass) return; // client isn't initialized 2062 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2063 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2064 String ref = nativeImageURI(contentX, contentY); 2065 Bundle data = msg.getData(); 2066 data.putString("url", ref); 2067 msg.setData(data); 2068 msg.sendToTarget(); 2069 } 2070 2071 private static int pinLoc(int x, int viewMax, int docMax) { 2072// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2073 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2074 // pin the short document to the top/left of the screen 2075 x = 0; 2076// Log.d(LOGTAG, "--- center " + x); 2077 } else if (x < 0) { 2078 x = 0; 2079// Log.d(LOGTAG, "--- zero"); 2080 } else if (x + viewMax > docMax) { 2081 x = docMax - viewMax; 2082// Log.d(LOGTAG, "--- pin " + x); 2083 } 2084 return x; 2085 } 2086 2087 // Expects x in view coordinates 2088 private int pinLocX(int x) { 2089 if (mInOverScrollMode) return x; 2090 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2091 } 2092 2093 // Expects y in view coordinates 2094 private int pinLocY(int y) { 2095 if (mInOverScrollMode) return y; 2096 return pinLoc(y, getViewHeightWithTitle(), 2097 computeRealVerticalScrollRange() + getTitleHeight()); 2098 } 2099 2100 /** 2101 * A title bar which is embedded in this WebView, and scrolls along with it 2102 * vertically, but not horizontally. 2103 */ 2104 private View mTitleBar; 2105 2106 /** 2107 * Since we draw the title bar ourselves, we removed the shadow from the 2108 * browser's activity. We do want a shadow at the bottom of the title bar, 2109 * or at the top of the screen if the title bar is not visible. This 2110 * drawable serves that purpose. 2111 */ 2112 private Drawable mTitleShadow; 2113 2114 /** 2115 * Add or remove a title bar to be embedded into the WebView, and scroll 2116 * along with it vertically, while remaining in view horizontally. Pass 2117 * null to remove the title bar from the WebView, and return to drawing 2118 * the WebView normally without translating to account for the title bar. 2119 * @hide 2120 */ 2121 public void setEmbeddedTitleBar(View v) { 2122 if (mTitleBar == v) return; 2123 if (mTitleBar != null) { 2124 removeView(mTitleBar); 2125 } 2126 if (null != v) { 2127 addView(v, new AbsoluteLayout.LayoutParams( 2128 ViewGroup.LayoutParams.MATCH_PARENT, 2129 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2130 if (mTitleShadow == null) { 2131 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 2132 com.android.internal.R.drawable.title_bar_shadow); 2133 } 2134 } 2135 mTitleBar = v; 2136 } 2137 2138 /** 2139 * Given a distance in view space, convert it to content space. Note: this 2140 * does not reflect translation, just scaling, so this should not be called 2141 * with coordinates, but should be called for dimensions like width or 2142 * height. 2143 */ 2144 private int viewToContentDimension(int d) { 2145 return Math.round(d * mInvActualScale); 2146 } 2147 2148 /** 2149 * Given an x coordinate in view space, convert it to content space. Also 2150 * may be used for absolute heights (such as for the WebTextView's 2151 * textSize, which is unaffected by the height of the title bar). 2152 */ 2153 /*package*/ int viewToContentX(int x) { 2154 return viewToContentDimension(x); 2155 } 2156 2157 /** 2158 * Given a y coordinate in view space, convert it to content space. 2159 * Takes into account the height of the title bar if there is one 2160 * embedded into the WebView. 2161 */ 2162 /*package*/ int viewToContentY(int y) { 2163 return viewToContentDimension(y - getTitleHeight()); 2164 } 2165 2166 /** 2167 * Given a x coordinate in view space, convert it to content space. 2168 * Returns the result as a float. 2169 */ 2170 private float viewToContentXf(int x) { 2171 return x * mInvActualScale; 2172 } 2173 2174 /** 2175 * Given a y coordinate in view space, convert it to content space. 2176 * Takes into account the height of the title bar if there is one 2177 * embedded into the WebView. Returns the result as a float. 2178 */ 2179 private float viewToContentYf(int y) { 2180 return (y - getTitleHeight()) * mInvActualScale; 2181 } 2182 2183 /** 2184 * Given a distance in content space, convert it to view space. Note: this 2185 * does not reflect translation, just scaling, so this should not be called 2186 * with coordinates, but should be called for dimensions like width or 2187 * height. 2188 */ 2189 /*package*/ int contentToViewDimension(int d) { 2190 return Math.round(d * mActualScale); 2191 } 2192 2193 /** 2194 * Given an x coordinate in content space, convert it to view 2195 * space. 2196 */ 2197 /*package*/ int contentToViewX(int x) { 2198 return contentToViewDimension(x); 2199 } 2200 2201 /** 2202 * Given a y coordinate in content space, convert it to view 2203 * space. Takes into account the height of the title bar. 2204 */ 2205 /*package*/ int contentToViewY(int y) { 2206 return contentToViewDimension(y) + getTitleHeight(); 2207 } 2208 2209 private Rect contentToViewRect(Rect x) { 2210 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2211 contentToViewX(x.right), contentToViewY(x.bottom)); 2212 } 2213 2214 /* To invalidate a rectangle in content coordinates, we need to transform 2215 the rect into view coordinates, so we can then call invalidate(...). 2216 2217 Normally, we would just call contentToView[XY](...), which eventually 2218 calls Math.round(coordinate * mActualScale). However, for invalidates, 2219 we need to account for the slop that occurs with antialiasing. To 2220 address that, we are a little more liberal in the size of the rect that 2221 we invalidate. 2222 2223 This liberal calculation calls floor() for the top/left, and ceil() for 2224 the bottom/right coordinates. This catches the possible extra pixels of 2225 antialiasing that we might have missed with just round(). 2226 */ 2227 2228 // Called by JNI to invalidate the View, given rectangle coordinates in 2229 // content space 2230 private void viewInvalidate(int l, int t, int r, int b) { 2231 final float scale = mActualScale; 2232 final int dy = getTitleHeight(); 2233 invalidate((int)Math.floor(l * scale), 2234 (int)Math.floor(t * scale) + dy, 2235 (int)Math.ceil(r * scale), 2236 (int)Math.ceil(b * scale) + dy); 2237 } 2238 2239 // Called by JNI to invalidate the View after a delay, given rectangle 2240 // coordinates in content space 2241 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2242 final float scale = mActualScale; 2243 final int dy = getTitleHeight(); 2244 postInvalidateDelayed(delay, 2245 (int)Math.floor(l * scale), 2246 (int)Math.floor(t * scale) + dy, 2247 (int)Math.ceil(r * scale), 2248 (int)Math.ceil(b * scale) + dy); 2249 } 2250 2251 private void invalidateContentRect(Rect r) { 2252 viewInvalidate(r.left, r.top, r.right, r.bottom); 2253 } 2254 2255 // stop the scroll animation, and don't let a subsequent fling add 2256 // to the existing velocity 2257 private void abortAnimation() { 2258 mScroller.abortAnimation(); 2259 mLastVelocity = 0; 2260 } 2261 2262 /* call from webcoreview.draw(), so we're still executing in the UI thread 2263 */ 2264 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2265 2266 // premature data from webkit, ignore 2267 if ((w | h) == 0) { 2268 return; 2269 } 2270 2271 // don't abort a scroll animation if we didn't change anything 2272 if (mContentWidth != w || mContentHeight != h) { 2273 // record new dimensions 2274 mContentWidth = w; 2275 mContentHeight = h; 2276 // If history Picture is drawn, don't update scroll. They will be 2277 // updated when we get out of that mode. 2278 if (!mDrawHistory) { 2279 // repin our scroll, taking into account the new content size 2280 int oldX = mScrollX; 2281 int oldY = mScrollY; 2282 mScrollX = pinLocX(mScrollX); 2283 mScrollY = pinLocY(mScrollY); 2284 if (oldX != mScrollX || oldY != mScrollY) { 2285 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2286 } 2287 if (!mScroller.isFinished()) { 2288 // We are in the middle of a scroll. Repin the final scroll 2289 // position. 2290 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2291 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2292 } 2293 } 2294 } 2295 contentSizeChanged(updateLayout); 2296 } 2297 2298 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2299 boolean force) { 2300 if (scale < mMinZoomScale) { 2301 scale = mMinZoomScale; 2302 // set mInZoomOverview for non mobile sites 2303 if (scale < mDefaultScale) mInZoomOverview = true; 2304 } else if (scale > mMaxZoomScale) { 2305 scale = mMaxZoomScale; 2306 } 2307 if (updateTextWrapScale) { 2308 mTextWrapScale = scale; 2309 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2310 mLastHeightSent = 0; 2311 } 2312 if (scale != mActualScale || force) { 2313 if (mDrawHistory) { 2314 // If history Picture is drawn, don't update scroll. They will 2315 // be updated when we get out of that mode. 2316 if (scale != mActualScale && !mPreviewZoomOnly) { 2317 mCallbackProxy.onScaleChanged(mActualScale, scale); 2318 } 2319 mActualScale = scale; 2320 mInvActualScale = 1 / scale; 2321 sendViewSizeZoom(); 2322 } else { 2323 // update our scroll so we don't appear to jump 2324 // i.e. keep the center of the doc in the center of the view 2325 2326 int oldX = mScrollX; 2327 int oldY = mScrollY; 2328 float ratio = scale * mInvActualScale; // old inverse 2329 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2330 float sy = ratio * oldY + (ratio - 1) 2331 * (mZoomCenterY - getTitleHeight()); 2332 2333 // now update our new scale and inverse 2334 if (scale != mActualScale && !mPreviewZoomOnly) { 2335 mCallbackProxy.onScaleChanged(mActualScale, scale); 2336 } 2337 mActualScale = scale; 2338 mInvActualScale = 1 / scale; 2339 2340 // Scale all the child views 2341 mViewManager.scaleAll(); 2342 2343 // as we don't have animation for scaling, don't do animation 2344 // for scrolling, as it causes weird intermediate state 2345 // pinScrollTo(Math.round(sx), Math.round(sy)); 2346 mScrollX = pinLocX(Math.round(sx)); 2347 mScrollY = pinLocY(Math.round(sy)); 2348 2349 // update webkit 2350 if (oldX != mScrollX || oldY != mScrollY) { 2351 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2352 } else { 2353 // the scroll position is adjusted at the beginning of the 2354 // zoom animation. But we want to update the WebKit at the 2355 // end of the zoom animation. See comments in onScaleEnd(). 2356 sendOurVisibleRect(); 2357 } 2358 sendViewSizeZoom(); 2359 } 2360 } 2361 } 2362 2363 // Used to avoid sending many visible rect messages. 2364 private Rect mLastVisibleRectSent; 2365 private Rect mLastGlobalRect; 2366 2367 private Rect sendOurVisibleRect() { 2368 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2369 2370 Rect rect = new Rect(); 2371 calcOurContentVisibleRect(rect); 2372 // Rect.equals() checks for null input. 2373 if (!rect.equals(mLastVisibleRectSent)) { 2374 Point pos = new Point(rect.left, rect.top); 2375 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2376 nativeMoveGeneration(), 0, pos); 2377 mLastVisibleRectSent = rect; 2378 } 2379 Rect globalRect = new Rect(); 2380 if (getGlobalVisibleRect(globalRect) 2381 && !globalRect.equals(mLastGlobalRect)) { 2382 if (DebugFlags.WEB_VIEW) { 2383 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2384 + globalRect.top + ",r=" + globalRect.right + ",b=" 2385 + globalRect.bottom); 2386 } 2387 // TODO: the global offset is only used by windowRect() 2388 // in ChromeClientAndroid ; other clients such as touch 2389 // and mouse events could return view + screen relative points. 2390 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2391 mLastGlobalRect = globalRect; 2392 } 2393 return rect; 2394 } 2395 2396 // Sets r to be the visible rectangle of our webview in view coordinates 2397 private void calcOurVisibleRect(Rect r) { 2398 Point p = new Point(); 2399 getGlobalVisibleRect(r, p); 2400 r.offset(-p.x, -p.y); 2401 if (mFindIsUp) { 2402 r.bottom -= mFindHeight; 2403 } 2404 } 2405 2406 // Sets r to be our visible rectangle in content coordinates 2407 private void calcOurContentVisibleRect(Rect r) { 2408 calcOurVisibleRect(r); 2409 // since we might overscroll, pin the rect to the bounds of the content 2410 r.left = Math.max(viewToContentX(r.left), 0); 2411 // viewToContentY will remove the total height of the title bar. Add 2412 // the visible height back in to account for the fact that if the title 2413 // bar is partially visible, the part of the visible rect which is 2414 // displaying our content is displaced by that amount. 2415 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2416 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2417 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2418 } 2419 2420 // Sets r to be our visible rectangle in content coordinates. We use this 2421 // method on the native side to compute the position of the fixed layers. 2422 // Uses floating coordinates (necessary to correctly place elements when 2423 // the scale factor is not 1) 2424 private void calcOurContentVisibleRectF(RectF r) { 2425 Rect ri = new Rect(0,0,0,0); 2426 calcOurVisibleRect(ri); 2427 // pin the rect to the bounds of the content 2428 r.left = Math.max(viewToContentXf(ri.left), 0.0f); 2429 // viewToContentY will remove the total height of the title bar. Add 2430 // the visible height back in to account for the fact that if the title 2431 // bar is partially visible, the part of the visible rect which is 2432 // displaying our content is displaced by that amount. 2433 r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f); 2434 r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth); 2435 r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight); 2436 } 2437 2438 static class ViewSizeData { 2439 int mWidth; 2440 int mHeight; 2441 int mTextWrapWidth; 2442 int mAnchorX; 2443 int mAnchorY; 2444 float mScale; 2445 boolean mIgnoreHeight; 2446 } 2447 2448 /** 2449 * Compute unzoomed width and height, and if they differ from the last 2450 * values we sent, send them to webkit (to be used has new viewport) 2451 * 2452 * @return true if new values were sent 2453 */ 2454 private boolean sendViewSizeZoom() { 2455 if (mPreviewZoomOnly) return false; 2456 2457 int viewWidth = getViewWidth(); 2458 int newWidth = Math.round(viewWidth * mInvActualScale); 2459 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2460 /* 2461 * Because the native side may have already done a layout before the 2462 * View system was able to measure us, we have to send a height of 0 to 2463 * remove excess whitespace when we grow our width. This will trigger a 2464 * layout and a change in content size. This content size change will 2465 * mean that contentSizeChanged will either call this method directly or 2466 * indirectly from onSizeChanged. 2467 */ 2468 if (newWidth > mLastWidthSent && mWrapContent) { 2469 newHeight = 0; 2470 } 2471 // Avoid sending another message if the dimensions have not changed. 2472 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2473 ViewSizeData data = new ViewSizeData(); 2474 data.mWidth = newWidth; 2475 data.mHeight = newHeight; 2476 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2477 data.mScale = mActualScale; 2478 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2479 data.mAnchorX = mAnchorX; 2480 data.mAnchorY = mAnchorY; 2481 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2482 mLastWidthSent = newWidth; 2483 mLastHeightSent = newHeight; 2484 mAnchorX = mAnchorY = 0; 2485 return true; 2486 } 2487 return false; 2488 } 2489 2490 private int computeRealHorizontalScrollRange() { 2491 if (mDrawHistory) { 2492 return mHistoryWidth; 2493 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2494 && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2495 // only honor the scrollbar mode when it is at minimum zoom level 2496 return computeHorizontalScrollExtent(); 2497 } else { 2498 // to avoid rounding error caused unnecessary scrollbar, use floor 2499 return (int) Math.floor(mContentWidth * mActualScale); 2500 } 2501 } 2502 2503 @Override 2504 protected int computeHorizontalScrollRange() { 2505 int range = computeRealHorizontalScrollRange(); 2506 2507 // Adjust reported range if overscrolled to compress the scroll bars 2508 final int scrollX = mScrollX; 2509 final int overscrollRight = computeMaxScrollX(); 2510 if (scrollX < 0) { 2511 range -= scrollX; 2512 } else if (scrollX > overscrollRight) { 2513 range += scrollX - overscrollRight; 2514 } 2515 2516 return range; 2517 } 2518 2519 @Override 2520 protected int computeHorizontalScrollOffset() { 2521 return Math.max(mScrollX, 0); 2522 } 2523 2524 private int computeRealVerticalScrollRange() { 2525 if (mDrawHistory) { 2526 return mHistoryHeight; 2527 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2528 && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2529 // only honor the scrollbar mode when it is at minimum zoom level 2530 return computeVerticalScrollExtent(); 2531 } else { 2532 // to avoid rounding error caused unnecessary scrollbar, use floor 2533 return (int) Math.floor(mContentHeight * mActualScale); 2534 } 2535 } 2536 2537 @Override 2538 protected int computeVerticalScrollRange() { 2539 int range = computeRealVerticalScrollRange(); 2540 2541 // Adjust reported range if overscrolled to compress the scroll bars 2542 final int scrollY = mScrollY; 2543 final int overscrollBottom = computeMaxScrollY(); 2544 if (scrollY < 0) { 2545 range -= scrollY; 2546 } else if (scrollY > overscrollBottom) { 2547 range += scrollY - overscrollBottom; 2548 } 2549 2550 return range; 2551 } 2552 2553 @Override 2554 protected int computeVerticalScrollOffset() { 2555 return Math.max(mScrollY - getTitleHeight(), 0); 2556 } 2557 2558 @Override 2559 protected int computeVerticalScrollExtent() { 2560 return getViewHeight(); 2561 } 2562 2563 /** @hide */ 2564 @Override 2565 protected void onDrawVerticalScrollBar(Canvas canvas, 2566 Drawable scrollBar, 2567 int l, int t, int r, int b) { 2568 if (mScrollY < 0) { 2569 t -= mScrollY; 2570 } 2571 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2572 scrollBar.draw(canvas); 2573 } 2574 2575 @Override 2576 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2577 boolean clampedY) { 2578 mInOverScrollMode = false; 2579 int maxX = computeMaxScrollX(); 2580 if (maxX == 0) { 2581 // do not over scroll x if the page just fits the screen 2582 scrollX = pinLocX(scrollX); 2583 } else if (scrollX < 0 || scrollX > maxX) { 2584 mInOverScrollMode = true; 2585 } 2586 if (scrollY < 0 || scrollY > computeMaxScrollY()) { 2587 mInOverScrollMode = true; 2588 } 2589 2590 super.scrollTo(scrollX, scrollY); 2591 } 2592 2593 /** 2594 * Get the url for the current page. This is not always the same as the url 2595 * passed to WebViewClient.onPageStarted because although the load for 2596 * that url has begun, the current page may not have changed. 2597 * @return The url for the current page. 2598 */ 2599 public String getUrl() { 2600 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2601 return h != null ? h.getUrl() : null; 2602 } 2603 2604 /** 2605 * Get the original url for the current page. This is not always the same 2606 * as the url passed to WebViewClient.onPageStarted because although the 2607 * load for that url has begun, the current page may not have changed. 2608 * Also, there may have been redirects resulting in a different url to that 2609 * originally requested. 2610 * @return The url that was originally requested for the current page. 2611 */ 2612 public String getOriginalUrl() { 2613 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2614 return h != null ? h.getOriginalUrl() : null; 2615 } 2616 2617 /** 2618 * Get the title for the current page. This is the title of the current page 2619 * until WebViewClient.onReceivedTitle is called. 2620 * @return The title for the current page. 2621 */ 2622 public String getTitle() { 2623 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2624 return h != null ? h.getTitle() : null; 2625 } 2626 2627 /** 2628 * Get the favicon for the current page. This is the favicon of the current 2629 * page until WebViewClient.onReceivedIcon is called. 2630 * @return The favicon for the current page. 2631 */ 2632 public Bitmap getFavicon() { 2633 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2634 return h != null ? h.getFavicon() : null; 2635 } 2636 2637 /** 2638 * Get the touch icon url for the apple-touch-icon <link> element. 2639 * @hide 2640 */ 2641 public String getTouchIconUrl() { 2642 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2643 return h != null ? h.getTouchIconUrl() : null; 2644 } 2645 2646 /** 2647 * Get the progress for the current page. 2648 * @return The progress for the current page between 0 and 100. 2649 */ 2650 public int getProgress() { 2651 return mCallbackProxy.getProgress(); 2652 } 2653 2654 /** 2655 * @return the height of the HTML content. 2656 */ 2657 public int getContentHeight() { 2658 return mContentHeight; 2659 } 2660 2661 /** 2662 * @return the width of the HTML content. 2663 * @hide 2664 */ 2665 public int getContentWidth() { 2666 return mContentWidth; 2667 } 2668 2669 /** 2670 * Pause all layout, parsing, and javascript timers for all webviews. This 2671 * is a global requests, not restricted to just this webview. This can be 2672 * useful if the application has been paused. 2673 */ 2674 public void pauseTimers() { 2675 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2676 } 2677 2678 /** 2679 * Resume all layout, parsing, and javascript timers for all webviews. 2680 * This will resume dispatching all timers. 2681 */ 2682 public void resumeTimers() { 2683 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2684 } 2685 2686 /** 2687 * Call this to pause any extra processing associated with this view and 2688 * its associated DOM/plugins/javascript/etc. For example, if the view is 2689 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2690 * network traffic. When the view is again "active", call onResume(). 2691 * 2692 * Note that this differs from pauseTimers(), which affects all views/DOMs 2693 * @hide 2694 */ 2695 public void onPause() { 2696 if (!mIsPaused) { 2697 mIsPaused = true; 2698 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2699 } 2700 } 2701 2702 /** 2703 * Call this to balanace a previous call to onPause() 2704 * @hide 2705 */ 2706 public void onResume() { 2707 if (mIsPaused) { 2708 mIsPaused = false; 2709 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2710 } 2711 } 2712 2713 /** 2714 * Returns true if the view is paused, meaning onPause() was called. Calling 2715 * onResume() sets the paused state back to false. 2716 * @hide 2717 */ 2718 public boolean isPaused() { 2719 return mIsPaused; 2720 } 2721 2722 /** 2723 * Call this to inform the view that memory is low so that it can 2724 * free any available memory. 2725 */ 2726 public void freeMemory() { 2727 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2728 } 2729 2730 /** 2731 * Clear the resource cache. Note that the cache is per-application, so 2732 * this will clear the cache for all WebViews used. 2733 * 2734 * @param includeDiskFiles If false, only the RAM cache is cleared. 2735 */ 2736 public void clearCache(boolean includeDiskFiles) { 2737 // Note: this really needs to be a static method as it clears cache for all 2738 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2739 // we can't make this static. 2740 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2741 includeDiskFiles ? 1 : 0, 0); 2742 } 2743 2744 /** 2745 * Make sure that clearing the form data removes the adapter from the 2746 * currently focused textfield if there is one. 2747 */ 2748 public void clearFormData() { 2749 if (inEditingMode()) { 2750 AutoCompleteAdapter adapter = null; 2751 mWebTextView.setAdapterCustom(adapter); 2752 } 2753 } 2754 2755 /** 2756 * Tell the WebView to clear its internal back/forward list. 2757 */ 2758 public void clearHistory() { 2759 mCallbackProxy.getBackForwardList().setClearPending(); 2760 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2761 } 2762 2763 /** 2764 * Clear the SSL preferences table stored in response to proceeding with SSL 2765 * certificate errors. 2766 */ 2767 public void clearSslPreferences() { 2768 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2769 } 2770 2771 /** 2772 * Return the WebBackForwardList for this WebView. This contains the 2773 * back/forward list for use in querying each item in the history stack. 2774 * This is a copy of the private WebBackForwardList so it contains only a 2775 * snapshot of the current state. Multiple calls to this method may return 2776 * different objects. The object returned from this method will not be 2777 * updated to reflect any new state. 2778 */ 2779 public WebBackForwardList copyBackForwardList() { 2780 return mCallbackProxy.getBackForwardList().clone(); 2781 } 2782 2783 /* 2784 * Highlight and scroll to the next occurance of String in findAll. 2785 * Wraps the page infinitely, and scrolls. Must be called after 2786 * calling findAll. 2787 * 2788 * @param forward Direction to search. 2789 */ 2790 public void findNext(boolean forward) { 2791 if (0 == mNativeClass) return; // client isn't initialized 2792 nativeFindNext(forward); 2793 } 2794 2795 /* 2796 * Find all instances of find on the page and highlight them. 2797 * @param find String to find. 2798 * @return int The number of occurances of the String "find" 2799 * that were found. 2800 */ 2801 public int findAll(String find) { 2802 if (0 == mNativeClass) return 0; // client isn't initialized 2803 int result = find != null ? nativeFindAll(find.toLowerCase(), 2804 find.toUpperCase()) : 0; 2805 invalidate(); 2806 mLastFind = find; 2807 return result; 2808 } 2809 2810 /** 2811 * @hide 2812 */ 2813 public void setFindIsUp(boolean isUp) { 2814 mFindIsUp = isUp; 2815 if (isUp) { 2816 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2817 false); 2818 } 2819 if (0 == mNativeClass) return; // client isn't initialized 2820 nativeSetFindIsUp(isUp); 2821 } 2822 2823 /** 2824 * @hide 2825 */ 2826 public int findIndex() { 2827 if (0 == mNativeClass) return -1; 2828 return nativeFindIndex(); 2829 } 2830 2831 // Used to know whether the find dialog is open. Affects whether 2832 // or not we draw the highlights for matches. 2833 private boolean mFindIsUp; 2834 2835 private int mFindHeight; 2836 // Keep track of the last string sent, so we can search again after an 2837 // orientation change or the dismissal of the soft keyboard. 2838 private String mLastFind; 2839 2840 /** 2841 * Return the first substring consisting of the address of a physical 2842 * location. Currently, only addresses in the United States are detected, 2843 * and consist of: 2844 * - a house number 2845 * - a street name 2846 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2847 * - a city name 2848 * - a state or territory, either spelled out or two-letter abbr. 2849 * - an optional 5 digit or 9 digit zip code. 2850 * 2851 * All names must be correctly capitalized, and the zip code, if present, 2852 * must be valid for the state. The street type must be a standard USPS 2853 * spelling or abbreviation. The state or territory must also be spelled 2854 * or abbreviated using USPS standards. The house number may not exceed 2855 * five digits. 2856 * @param addr The string to search for addresses. 2857 * 2858 * @return the address, or if no address is found, return null. 2859 */ 2860 public static String findAddress(String addr) { 2861 return findAddress(addr, false); 2862 } 2863 2864 /** 2865 * @hide 2866 * Return the first substring consisting of the address of a physical 2867 * location. Currently, only addresses in the United States are detected, 2868 * and consist of: 2869 * - a house number 2870 * - a street name 2871 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2872 * - a city name 2873 * - a state or territory, either spelled out or two-letter abbr. 2874 * - an optional 5 digit or 9 digit zip code. 2875 * 2876 * Names are optionally capitalized, and the zip code, if present, 2877 * must be valid for the state. The street type must be a standard USPS 2878 * spelling or abbreviation. The state or territory must also be spelled 2879 * or abbreviated using USPS standards. The house number may not exceed 2880 * five digits. 2881 * @param addr The string to search for addresses. 2882 * @param caseInsensitive addr Set to true to make search ignore case. 2883 * 2884 * @return the address, or if no address is found, return null. 2885 */ 2886 public static String findAddress(String addr, boolean caseInsensitive) { 2887 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2888 } 2889 2890 /* 2891 * Clear the highlighting surrounding text matches created by findAll. 2892 */ 2893 public void clearMatches() { 2894 mLastFind = ""; 2895 if (mNativeClass == 0) 2896 return; 2897 nativeSetFindIsEmpty(); 2898 invalidate(); 2899 } 2900 2901 /** 2902 * @hide 2903 */ 2904 public void notifyFindDialogDismissed() { 2905 if (mWebViewCore == null) { 2906 return; 2907 } 2908 clearMatches(); 2909 setFindIsUp(false); 2910 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2911 false); 2912 // Now that the dialog has been removed, ensure that we scroll to a 2913 // location that is not beyond the end of the page. 2914 pinScrollTo(mScrollX, mScrollY, false, 0); 2915 invalidate(); 2916 } 2917 2918 /** 2919 * @hide 2920 */ 2921 public void setFindDialogHeight(int height) { 2922 if (DebugFlags.WEB_VIEW) { 2923 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2924 } 2925 mFindHeight = height; 2926 } 2927 2928 /** 2929 * Query the document to see if it contains any image references. The 2930 * message object will be dispatched with arg1 being set to 1 if images 2931 * were found and 0 if the document does not reference any images. 2932 * @param response The message that will be dispatched with the result. 2933 */ 2934 public void documentHasImages(Message response) { 2935 if (response == null) { 2936 return; 2937 } 2938 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2939 } 2940 2941 @Override 2942 public void computeScroll() { 2943 if (mScroller.computeScrollOffset()) { 2944 int oldX = mScrollX; 2945 int oldY = mScrollY; 2946 int x = mScroller.getCurrX(); 2947 int y = mScroller.getCurrY(); 2948 invalidate(); // So we draw again 2949 2950 if (oldX != x || oldY != y) { 2951 final int rangeX = computeMaxScrollX(); 2952 final int rangeY = computeMaxScrollY(); 2953 overScrollBy(x - oldX, y - oldY, oldX, oldY, 2954 rangeX, rangeY, 2955 mOverflingDistance, mOverflingDistance, false); 2956 2957 if (mEdgeGlowTop != null) { 2958 if (rangeY > 0 || getOverScrollMode() == OVER_SCROLL_ALWAYS) { 2959 if (y < 0 && oldY >= 0) { 2960 mEdgeGlowTop.onAbsorb((int) mScroller.getCurrVelocity()); 2961 if (!mEdgeGlowBottom.isFinished()) { 2962 mEdgeGlowBottom.onRelease(); 2963 } 2964 } else if (y > rangeY && oldY <= rangeY) { 2965 mEdgeGlowBottom.onAbsorb((int) mScroller.getCurrVelocity()); 2966 if (!mEdgeGlowTop.isFinished()) { 2967 mEdgeGlowTop.onRelease(); 2968 } 2969 } 2970 } 2971 2972 if (rangeX > 0) { 2973 if (x < 0 && oldX >= 0) { 2974 mEdgeGlowLeft.onAbsorb((int) mScroller.getCurrVelocity()); 2975 if (!mEdgeGlowRight.isFinished()) { 2976 mEdgeGlowRight.onRelease(); 2977 } 2978 } else if (x > rangeX && oldX <= rangeX) { 2979 mEdgeGlowRight.onAbsorb((int) mScroller.getCurrVelocity()); 2980 if (!mEdgeGlowLeft.isFinished()) { 2981 mEdgeGlowLeft.onRelease(); 2982 } 2983 } 2984 } 2985 } 2986 } 2987 if (mScroller.isFinished()) { 2988 mPrivateHandler.sendEmptyMessage(RESUME_WEBCORE_PRIORITY); 2989 } 2990 } else { 2991 super.computeScroll(); 2992 } 2993 } 2994 2995 private static int computeDuration(int dx, int dy) { 2996 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2997 int duration = distance * 1000 / STD_SPEED; 2998 return Math.min(duration, MAX_DURATION); 2999 } 3000 3001 // helper to pin the scrollBy parameters (already in view coordinates) 3002 // returns true if the scroll was changed 3003 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3004 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3005 } 3006 // helper to pin the scrollTo parameters (already in view coordinates) 3007 // returns true if the scroll was changed 3008 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3009 x = pinLocX(x); 3010 y = pinLocY(y); 3011 int dx = x - mScrollX; 3012 int dy = y - mScrollY; 3013 3014 if ((dx | dy) == 0) { 3015 return false; 3016 } 3017 if (animate) { 3018 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3019 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3020 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3021 awakenScrollBars(mScroller.getDuration()); 3022 invalidate(); 3023 } else { 3024 abortAnimation(); // just in case 3025 scrollTo(x, y); 3026 } 3027 return true; 3028 } 3029 3030 // Scale from content to view coordinates, and pin. 3031 // Also called by jni webview.cpp 3032 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3033 if (mDrawHistory) { 3034 // disallow WebView to change the scroll position as History Picture 3035 // is used in the view system. 3036 // TODO: as we switchOutDrawHistory when trackball or navigation 3037 // keys are hit, this should be safe. Right? 3038 return false; 3039 } 3040 cx = contentToViewDimension(cx); 3041 cy = contentToViewDimension(cy); 3042 if (mHeightCanMeasure) { 3043 // move our visible rect according to scroll request 3044 if (cy != 0) { 3045 Rect tempRect = new Rect(); 3046 calcOurVisibleRect(tempRect); 3047 tempRect.offset(cx, cy); 3048 requestRectangleOnScreen(tempRect); 3049 } 3050 // FIXME: We scroll horizontally no matter what because currently 3051 // ScrollView and ListView will not scroll horizontally. 3052 // FIXME: Why do we only scroll horizontally if there is no 3053 // vertical scroll? 3054// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3055 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3056 } else { 3057 return pinScrollBy(cx, cy, animate, 0); 3058 } 3059 } 3060 3061 /** 3062 * Called by CallbackProxy when the page finishes loading. 3063 * @param url The URL of the page which has finished loading. 3064 */ 3065 /* package */ void onPageFinished(String url) { 3066 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3067 // If the user is now on a different page, or has scrolled the page 3068 // past the point where the title bar is offscreen, ignore the 3069 // scroll request. 3070 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3071 && mScrollX == 0 && mScrollY == 0) { 3072 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3073 SLIDE_TITLE_DURATION); 3074 } 3075 mPageThatNeedsToSlideTitleBarOffScreen = null; 3076 } 3077 } 3078 3079 /** 3080 * The URL of a page that sent a message to scroll the title bar off screen. 3081 * 3082 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3083 * title bar off the screen. Sometimes, the scroll position is set before 3084 * the page finishes loading. Rather than scrolling while the page is still 3085 * loading, keep track of the URL and new scroll position so we can perform 3086 * the scroll once the page finishes loading. 3087 */ 3088 private String mPageThatNeedsToSlideTitleBarOffScreen; 3089 3090 /** 3091 * The destination Y scroll position to be used when the page finishes 3092 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3093 */ 3094 private int mYDistanceToSlideTitleOffScreen; 3095 3096 // scale from content to view coordinates, and pin 3097 // return true if pin caused the final x/y different than the request cx/cy, 3098 // and a future scroll may reach the request cx/cy after our size has 3099 // changed 3100 // return false if the view scroll to the exact position as it is requested, 3101 // where negative numbers are taken to mean 0 3102 private boolean setContentScrollTo(int cx, int cy) { 3103 if (mDrawHistory) { 3104 // disallow WebView to change the scroll position as History Picture 3105 // is used in the view system. 3106 // One known case where this is called is that WebCore tries to 3107 // restore the scroll position. As history Picture already uses the 3108 // saved scroll position, it is ok to skip this. 3109 return false; 3110 } 3111 int vx; 3112 int vy; 3113 if ((cx | cy) == 0) { 3114 // If the page is being scrolled to (0,0), do not add in the title 3115 // bar's height, and simply scroll to (0,0). (The only other work 3116 // in contentToView_ is to multiply, so this would not change 0.) 3117 vx = 0; 3118 vy = 0; 3119 } else { 3120 vx = contentToViewX(cx); 3121 vy = contentToViewY(cy); 3122 } 3123// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3124// vx + " " + vy + "]"); 3125 // Some mobile sites attempt to scroll the title bar off the page by 3126 // scrolling to (0,1). If we are at the top left corner of the 3127 // page, assume this is an attempt to scroll off the title bar, and 3128 // animate the title bar off screen slowly enough that the user can see 3129 // it. 3130 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3131 && mTitleBar != null) { 3132 // FIXME: 100 should be defined somewhere as our max progress. 3133 if (getProgress() < 100) { 3134 // Wait to scroll the title bar off screen until the page has 3135 // finished loading. Keep track of the URL and the destination 3136 // Y position 3137 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3138 mYDistanceToSlideTitleOffScreen = vy; 3139 } else { 3140 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3141 } 3142 // Since we are animating, we have not yet reached the desired 3143 // scroll position. Do not return true to request another attempt 3144 return false; 3145 } 3146 pinScrollTo(vx, vy, false, 0); 3147 // If the request was to scroll to a negative coordinate, treat it as if 3148 // it was a request to scroll to 0 3149 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3150 return true; 3151 } else { 3152 return false; 3153 } 3154 } 3155 3156 // scale from content to view coordinates, and pin 3157 private void spawnContentScrollTo(int cx, int cy) { 3158 if (mDrawHistory) { 3159 // disallow WebView to change the scroll position as History Picture 3160 // is used in the view system. 3161 return; 3162 } 3163 int vx = contentToViewX(cx); 3164 int vy = contentToViewY(cy); 3165 pinScrollTo(vx, vy, true, 0); 3166 } 3167 3168 /** 3169 * These are from webkit, and are in content coordinate system (unzoomed) 3170 */ 3171 private void contentSizeChanged(boolean updateLayout) { 3172 // suppress 0,0 since we usually see real dimensions soon after 3173 // this avoids drawing the prev content in a funny place. If we find a 3174 // way to consolidate these notifications, this check may become 3175 // obsolete 3176 if ((mContentWidth | mContentHeight) == 0) { 3177 return; 3178 } 3179 3180 if (mHeightCanMeasure) { 3181 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3182 || updateLayout) { 3183 requestLayout(); 3184 } 3185 } else if (mWidthCanMeasure) { 3186 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3187 || updateLayout) { 3188 requestLayout(); 3189 } 3190 } else { 3191 // If we don't request a layout, try to send our view size to the 3192 // native side to ensure that WebCore has the correct dimensions. 3193 sendViewSizeZoom(); 3194 } 3195 } 3196 3197 /** 3198 * Set the WebViewClient that will receive various notifications and 3199 * requests. This will replace the current handler. 3200 * @param client An implementation of WebViewClient. 3201 */ 3202 public void setWebViewClient(WebViewClient client) { 3203 mCallbackProxy.setWebViewClient(client); 3204 } 3205 3206 /** 3207 * Gets the WebViewClient 3208 * @return the current WebViewClient instance. 3209 * 3210 *@hide pending API council approval. 3211 */ 3212 public WebViewClient getWebViewClient() { 3213 return mCallbackProxy.getWebViewClient(); 3214 } 3215 3216 /** 3217 * Register the interface to be used when content can not be handled by 3218 * the rendering engine, and should be downloaded instead. This will replace 3219 * the current handler. 3220 * @param listener An implementation of DownloadListener. 3221 */ 3222 public void setDownloadListener(DownloadListener listener) { 3223 mCallbackProxy.setDownloadListener(listener); 3224 } 3225 3226 /** 3227 * Set the chrome handler. This is an implementation of WebChromeClient for 3228 * use in handling Javascript dialogs, favicons, titles, and the progress. 3229 * This will replace the current handler. 3230 * @param client An implementation of WebChromeClient. 3231 */ 3232 public void setWebChromeClient(WebChromeClient client) { 3233 mCallbackProxy.setWebChromeClient(client); 3234 } 3235 3236 /** 3237 * Gets the chrome handler. 3238 * @return the current WebChromeClient instance. 3239 * 3240 * @hide API council approval. 3241 */ 3242 public WebChromeClient getWebChromeClient() { 3243 return mCallbackProxy.getWebChromeClient(); 3244 } 3245 3246 /** 3247 * Set the back/forward list client. This is an implementation of 3248 * WebBackForwardListClient for handling new items and changes in the 3249 * history index. 3250 * @param client An implementation of WebBackForwardListClient. 3251 * {@hide} 3252 */ 3253 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3254 mCallbackProxy.setWebBackForwardListClient(client); 3255 } 3256 3257 /** 3258 * Gets the WebBackForwardListClient. 3259 * {@hide} 3260 */ 3261 public WebBackForwardListClient getWebBackForwardListClient() { 3262 return mCallbackProxy.getWebBackForwardListClient(); 3263 } 3264 3265 /** 3266 * Set the Picture listener. This is an interface used to receive 3267 * notifications of a new Picture. 3268 * @param listener An implementation of WebView.PictureListener. 3269 */ 3270 public void setPictureListener(PictureListener listener) { 3271 mPictureListener = listener; 3272 } 3273 3274 /** 3275 * {@hide} 3276 */ 3277 /* FIXME: Debug only! Remove for SDK! */ 3278 public void externalRepresentation(Message callback) { 3279 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3280 } 3281 3282 /** 3283 * {@hide} 3284 */ 3285 /* FIXME: Debug only! Remove for SDK! */ 3286 public void documentAsText(Message callback) { 3287 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3288 } 3289 3290 /** 3291 * Use this function to bind an object to Javascript so that the 3292 * methods can be accessed from Javascript. 3293 * <p><strong>IMPORTANT:</strong> 3294 * <ul> 3295 * <li> Using addJavascriptInterface() allows JavaScript to control your 3296 * application. This can be a very useful feature or a dangerous security 3297 * issue. When the HTML in the WebView is untrustworthy (for example, part 3298 * or all of the HTML is provided by some person or process), then an 3299 * attacker could inject HTML that will execute your code and possibly any 3300 * code of the attacker's choosing.<br> 3301 * Do not use addJavascriptInterface() unless all of the HTML in this 3302 * WebView was written by you.</li> 3303 * <li> The Java object that is bound runs in another thread and not in 3304 * the thread that it was constructed in.</li> 3305 * </ul></p> 3306 * @param obj The class instance to bind to Javascript 3307 * @param interfaceName The name to used to expose the class in Javascript 3308 */ 3309 public void addJavascriptInterface(Object obj, String interfaceName) { 3310 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3311 arg.mObject = obj; 3312 arg.mInterfaceName = interfaceName; 3313 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3314 } 3315 3316 /** 3317 * Return the WebSettings object used to control the settings for this 3318 * WebView. 3319 * @return A WebSettings object that can be used to control this WebView's 3320 * settings. 3321 */ 3322 public WebSettings getSettings() { 3323 return mWebViewCore.getSettings(); 3324 } 3325 3326 /** 3327 * Use this method to inform the webview about packages that are installed 3328 * in the system. This information will be used by the 3329 * navigator.isApplicationInstalled() API. 3330 * @param packageNames is a set of package names that are known to be 3331 * installed in the system. 3332 * 3333 * @hide not a public API 3334 */ 3335 public void addPackageNames(Set<String> packageNames) { 3336 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 3337 } 3338 3339 /** 3340 * Use this method to inform the webview about single packages that are 3341 * installed in the system. This information will be used by the 3342 * navigator.isApplicationInstalled() API. 3343 * @param packageName is the name of a package that is known to be 3344 * installed in the system. 3345 * 3346 * @hide not a public API 3347 */ 3348 public void addPackageName(String packageName) { 3349 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3350 } 3351 3352 /** 3353 * Use this method to inform the webview about packages that are uninstalled 3354 * in the system. This information will be used by the 3355 * navigator.isApplicationInstalled() API. 3356 * @param packageName is the name of a package that has been uninstalled in 3357 * the system. 3358 * 3359 * @hide not a public API 3360 */ 3361 public void removePackageName(String packageName) { 3362 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3363 } 3364 3365 /** 3366 * Return the list of currently loaded plugins. 3367 * @return The list of currently loaded plugins. 3368 * 3369 * @deprecated This was used for Gears, which has been deprecated. 3370 */ 3371 @Deprecated 3372 public static synchronized PluginList getPluginList() { 3373 return new PluginList(); 3374 } 3375 3376 /** 3377 * @deprecated This was used for Gears, which has been deprecated. 3378 */ 3379 @Deprecated 3380 public void refreshPlugins(boolean reloadOpenPages) { } 3381 3382 //------------------------------------------------------------------------- 3383 // Override View methods 3384 //------------------------------------------------------------------------- 3385 3386 @Override 3387 protected void finalize() throws Throwable { 3388 try { 3389 destroy(); 3390 } finally { 3391 super.finalize(); 3392 } 3393 } 3394 3395 @Override 3396 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3397 if (child == mTitleBar) { 3398 // When drawing the title bar, move it horizontally to always show 3399 // at the top of the WebView. 3400 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3401 } 3402 return super.drawChild(canvas, child, drawingTime); 3403 } 3404 3405 private void drawContent(Canvas canvas) { 3406 // Update the buttons in the picture, so when we draw the picture 3407 // to the screen, they are in the correct state. 3408 // Tell the native side if user is a) touching the screen, 3409 // b) pressing the trackball down, or c) pressing the enter key 3410 // If the cursor is on a button, we need to draw it in the pressed 3411 // state. 3412 // If mNativeClass is 0, we should not reach here, so we do not 3413 // need to check it again. 3414 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3415 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3416 || mTrackballDown || mGotCenterDown, false); 3417 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3418 } 3419 3420 @Override 3421 protected void onDraw(Canvas canvas) { 3422 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3423 if (mNativeClass == 0) { 3424 return; 3425 } 3426 3427 // if both mContentWidth and mContentHeight are 0, it means there is no 3428 // valid Picture passed to WebView yet. This can happen when WebView 3429 // just starts. Draw the background and return. 3430 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3431 canvas.drawColor(mBackgroundColor); 3432 return; 3433 } 3434 3435 int saveCount = canvas.save(); 3436 if (mInOverScrollMode && !getSettings() 3437 .getUseWebViewBackgroundForOverscrollBackground()) { 3438 if (mOverScrollBackground == null) { 3439 mOverScrollBackground = new Paint(); 3440 Bitmap bm = BitmapFactory.decodeResource( 3441 mContext.getResources(), 3442 com.android.internal.R.drawable.status_bar_background); 3443 mOverScrollBackground.setShader(new BitmapShader(bm, 3444 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3445 mOverScrollBorder = new Paint(); 3446 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3447 mOverScrollBorder.setStrokeWidth(0); 3448 mOverScrollBorder.setColor(0xffbbbbbb); 3449 } 3450 3451 int top = 0; 3452 int right = computeRealHorizontalScrollRange(); 3453 int bottom = top + computeRealVerticalScrollRange(); 3454 // first draw the background and anchor to the top of the view 3455 canvas.save(); 3456 canvas.translate(mScrollX, mScrollY); 3457 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3458 - mScrollY, Region.Op.DIFFERENCE); 3459 canvas.drawPaint(mOverScrollBackground); 3460 canvas.restore(); 3461 // then draw the border 3462 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3463 // next clip the region for the content 3464 canvas.clipRect(0, top, right, bottom); 3465 } 3466 if (mTitleBar != null) { 3467 canvas.translate(0, (int) mTitleBar.getHeight()); 3468 } 3469 if (mDragTrackerHandler == null) { 3470 drawContent(canvas); 3471 } else { 3472 if (!mDragTrackerHandler.draw(canvas)) { 3473 // sometimes the tracker doesn't draw, even though its active 3474 drawContent(canvas); 3475 } 3476 if (mDragTrackerHandler.isFinished()) { 3477 mDragTrackerHandler = null; 3478 } 3479 } 3480 canvas.restoreToCount(saveCount); 3481 3482 // Now draw the shadow. 3483 int titleH = getVisibleTitleHeight(); 3484 if (mTitleBar != null && titleH == 0) { 3485 int height = (int) (5f * getContext().getResources() 3486 .getDisplayMetrics().density); 3487 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3488 mScrollY + height); 3489 mTitleShadow.draw(canvas); 3490 } 3491 3492 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3493 invalidate(); 3494 } 3495 mWebViewCore.signalRepaintDone(); 3496 } 3497 3498 @Override 3499 public void draw(Canvas canvas) { 3500 super.draw(canvas); 3501 if (mEdgeGlowTop != null && drawEdgeGlows(canvas)) { 3502 invalidate(); 3503 } 3504 } 3505 3506 /** 3507 * Draw the glow effect along the sides of the widget. mEdgeGlow* must be non-null. 3508 * 3509 * @param canvas Canvas to draw into, transformed into view coordinates. 3510 * @return true if glow effects are still animating and the view should invalidate again. 3511 */ 3512 private boolean drawEdgeGlows(Canvas canvas) { 3513 final int scrollX = mScrollX; 3514 final int scrollY = mScrollY; 3515 final int width = getWidth(); 3516 int height = getHeight(); 3517 3518 boolean invalidateForGlow = false; 3519 if (!mEdgeGlowTop.isFinished()) { 3520 final int restoreCount = canvas.save(); 3521 3522 canvas.translate(-width / 2 + scrollX, Math.min(0, scrollY)); 3523 mEdgeGlowTop.setSize(width * 2, height); 3524 invalidateForGlow |= mEdgeGlowTop.draw(canvas); 3525 canvas.restoreToCount(restoreCount); 3526 } 3527 if (!mEdgeGlowBottom.isFinished()) { 3528 final int restoreCount = canvas.save(); 3529 3530 canvas.translate(-width / 2 + scrollX, Math.max(computeMaxScrollY(), scrollY) + height); 3531 canvas.rotate(180, width, 0); 3532 mEdgeGlowBottom.setSize(width * 2, height); 3533 invalidateForGlow |= mEdgeGlowBottom.draw(canvas); 3534 canvas.restoreToCount(restoreCount); 3535 } 3536 if (!mEdgeGlowLeft.isFinished()) { 3537 final int restoreCount = canvas.save(); 3538 3539 canvas.rotate(270); 3540 canvas.translate(-height * 1.5f - scrollY, Math.min(0, scrollX)); 3541 mEdgeGlowLeft.setSize(height * 2, width); 3542 invalidateForGlow |= mEdgeGlowLeft.draw(canvas); 3543 canvas.restoreToCount(restoreCount); 3544 } 3545 if (!mEdgeGlowRight.isFinished()) { 3546 final int restoreCount = canvas.save(); 3547 3548 canvas.rotate(90); 3549 canvas.translate(-height / 2 + scrollY, 3550 -(Math.max(computeMaxScrollX(), scrollX) + width)); 3551 mEdgeGlowRight.setSize(height * 2, width); 3552 invalidateForGlow |= mEdgeGlowRight.draw(canvas); 3553 canvas.restoreToCount(restoreCount); 3554 } 3555 return invalidateForGlow; 3556 } 3557 3558 @Override 3559 public void setLayoutParams(ViewGroup.LayoutParams params) { 3560 if (params.height == LayoutParams.WRAP_CONTENT) { 3561 mWrapContent = true; 3562 } 3563 super.setLayoutParams(params); 3564 } 3565 3566 @Override 3567 public boolean performLongClick() { 3568 // performLongClick() is the result of a delayed message. If we switch 3569 // to windows overview, the WebView will be temporarily removed from the 3570 // view system. In that case, do nothing. 3571 if (getParent() == null) return false; 3572 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3573 // Send the click so that the textfield is in focus 3574 centerKeyPressOnTextField(); 3575 rebuildWebTextView(); 3576 } else { 3577 clearTextEntry(true); 3578 } 3579 if (inEditingMode()) { 3580 return mWebTextView.performLongClick(); 3581 } 3582 /* if long click brings up a context menu, the super function 3583 * returns true and we're done. Otherwise, nothing happened when 3584 * the user clicked. */ 3585 if (super.performLongClick()) { 3586 return true; 3587 } 3588 /* In the case where the application hasn't already handled the long 3589 * click action, look for a word under the click. If one is found, 3590 * animate the text selection into view. 3591 * FIXME: no animation code yet */ 3592 if (mSelectingText) return false; // long click does nothing on selection 3593 int x = viewToContentX((int) mLastTouchX + mScrollX); 3594 int y = viewToContentY((int) mLastTouchY + mScrollY); 3595 setUpSelect(); 3596 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3597 nativeSetExtendSelection(); 3598 WebChromeClient client = getWebChromeClient(); 3599 if (client != null) client.onSelectionStart(this); 3600 return true; 3601 } 3602 notifySelectDialogDismissed(); 3603 return false; 3604 } 3605 3606 boolean inAnimateZoom() { 3607 return mZoomScale != 0; 3608 } 3609 3610 /** 3611 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3612 * has changed. This is especially important for password fields, which are 3613 * drawn by the WebTextView, since it conveys more information than what 3614 * webkit draws. Thus we need to reposition it to show in the correct 3615 * place. 3616 */ 3617 private boolean mNeedToAdjustWebTextView; 3618 3619 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3620 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3621 Rect vBox = contentToViewRect(contentBounds); 3622 Rect visibleRect = new Rect(); 3623 calcOurVisibleRect(visibleRect); 3624 // If the textfield is on screen, place the WebTextView in 3625 // its new place, accounting for our new scroll/zoom values, 3626 // and adjust its textsize. 3627 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3628 : visibleRect.contains(vBox)) { 3629 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3630 vBox.height()); 3631 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3632 contentToViewDimension( 3633 nativeFocusCandidateTextSize())); 3634 return true; 3635 } else { 3636 // The textfield is now off screen. The user probably 3637 // was not zooming to see the textfield better. Remove 3638 // the WebTextView. If the user types a key, and the 3639 // textfield is still in focus, we will reconstruct 3640 // the WebTextView and scroll it back on screen. 3641 mWebTextView.remove(); 3642 return false; 3643 } 3644 } 3645 3646 private void drawExtras(Canvas canvas, int extras, boolean animationsRunning) { 3647 // If mNativeClass is 0, we should not reach here, so we do not 3648 // need to check it again. 3649 if (animationsRunning) { 3650 canvas.setDrawFilter(mWebViewCore.mZoomFilter); 3651 } 3652 nativeDrawExtras(canvas, extras); 3653 canvas.setDrawFilter(null); 3654 } 3655 3656 private void drawCoreAndCursorRing(Canvas canvas, int color, 3657 boolean drawCursorRing) { 3658 if (mDrawHistory) { 3659 canvas.scale(mActualScale, mActualScale); 3660 canvas.drawPicture(mHistoryPicture); 3661 return; 3662 } 3663 3664 boolean animateZoom = mZoomScale != 0; 3665 boolean animateScroll = ((!mScroller.isFinished() 3666 || mVelocityTracker != null) 3667 && (mTouchMode != TOUCH_DRAG_MODE || 3668 mHeldMotionless != MOTIONLESS_TRUE)) 3669 || mDeferTouchMode == TOUCH_DRAG_MODE; 3670 if (mTouchMode == TOUCH_DRAG_MODE) { 3671 if (mHeldMotionless == MOTIONLESS_PENDING) { 3672 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3673 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3674 mHeldMotionless = MOTIONLESS_FALSE; 3675 } 3676 if (mHeldMotionless == MOTIONLESS_FALSE) { 3677 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3678 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3679 mHeldMotionless = MOTIONLESS_PENDING; 3680 } 3681 } 3682 if (animateZoom) { 3683 float zoomScale; 3684 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3685 if (interval < ZOOM_ANIMATION_LENGTH) { 3686 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3687 zoomScale = 1.0f / (mInvInitialZoomScale 3688 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3689 invalidate(); 3690 } else { 3691 zoomScale = mZoomScale; 3692 // set mZoomScale to be 0 as we have done animation 3693 mZoomScale = 0; 3694 WebViewCore.resumeUpdatePicture(mWebViewCore); 3695 // call invalidate() again to draw with the final filters 3696 invalidate(); 3697 if (mNeedToAdjustWebTextView) { 3698 mNeedToAdjustWebTextView = false; 3699 if (didUpdateTextViewBounds(false) 3700 && nativeFocusCandidateIsPassword()) { 3701 // If it is a password field, start drawing the 3702 // WebTextView once again. 3703 mWebTextView.setInPassword(true); 3704 } 3705 } 3706 } 3707 // calculate the intermediate scroll position. As we need to use 3708 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3709 float scale = zoomScale * mInvInitialZoomScale; 3710 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3711 - mZoomCenterX); 3712 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3713 * zoomScale)) + mScrollX; 3714 int titleHeight = getTitleHeight(); 3715 int ty = Math.round(scale 3716 * (mInitialScrollY + mZoomCenterY - titleHeight) 3717 - (mZoomCenterY - titleHeight)); 3718 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3719 - titleHeight, getViewHeight(), Math.round(mContentHeight 3720 * zoomScale)) + titleHeight) + mScrollY; 3721 canvas.translate(tx, ty); 3722 canvas.scale(zoomScale, zoomScale); 3723 if (inEditingMode() && !mNeedToAdjustWebTextView 3724 && mZoomScale != 0) { 3725 // The WebTextView is up. Keep track of this so we can adjust 3726 // its size and placement when we finish zooming 3727 mNeedToAdjustWebTextView = true; 3728 // If it is in password mode, turn it off so it does not draw 3729 // misplaced. 3730 if (nativeFocusCandidateIsPassword()) { 3731 mWebTextView.setInPassword(false); 3732 } 3733 } 3734 } else { 3735 canvas.scale(mActualScale, mActualScale); 3736 } 3737 3738 boolean UIAnimationsRunning = false; 3739 // Currently for each draw we compute the animation values; 3740 // We may in the future decide to do that independently. 3741 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3742 UIAnimationsRunning = true; 3743 // If we have unfinished (or unstarted) animations, 3744 // we ask for a repaint. 3745 invalidate(); 3746 } 3747 mWebViewCore.drawContentPicture(canvas, color, 3748 (animateZoom || mPreviewZoomOnly || UIAnimationsRunning), 3749 animateScroll); 3750 if (mNativeClass == 0) return; 3751 // decide which adornments to draw 3752 int extras = DRAW_EXTRAS_NONE; 3753 if (mFindIsUp) { 3754 extras = DRAW_EXTRAS_FIND; 3755 } else if (mSelectingText) { 3756 extras = DRAW_EXTRAS_SELECTION; 3757 nativeSetSelectionPointer(mDrawSelectionPointer, 3758 mInvActualScale, 3759 mSelectX, mSelectY - getTitleHeight()); 3760 } else if (drawCursorRing) { 3761 extras = DRAW_EXTRAS_CURSOR_RING; 3762 } 3763 drawExtras(canvas, extras, UIAnimationsRunning); 3764 3765 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3766 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3767 mTouchMode = TOUCH_SHORTPRESS_MODE; 3768 } 3769 } 3770 if (mFocusSizeChanged) { 3771 mFocusSizeChanged = false; 3772 // If we are zooming, this will get handled above, when the zoom 3773 // finishes. We also do not need to do this unless the WebTextView 3774 // is showing. 3775 if (!animateZoom && inEditingMode()) { 3776 didUpdateTextViewBounds(true); 3777 } 3778 } 3779 } 3780 3781 // draw history 3782 private boolean mDrawHistory = false; 3783 private Picture mHistoryPicture = null; 3784 private int mHistoryWidth = 0; 3785 private int mHistoryHeight = 0; 3786 3787 // Only check the flag, can be called from WebCore thread 3788 boolean drawHistory() { 3789 return mDrawHistory; 3790 } 3791 3792 // Should only be called in UI thread 3793 void switchOutDrawHistory() { 3794 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3795 if (mDrawHistory && mWebViewCore.pictureReady()) { 3796 mDrawHistory = false; 3797 mHistoryPicture = null; 3798 invalidate(); 3799 int oldScrollX = mScrollX; 3800 int oldScrollY = mScrollY; 3801 mScrollX = pinLocX(mScrollX); 3802 mScrollY = pinLocY(mScrollY); 3803 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3804 mUserScroll = false; 3805 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3806 oldScrollY); 3807 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3808 } else { 3809 sendOurVisibleRect(); 3810 } 3811 } 3812 } 3813 3814 WebViewCore.CursorData cursorData() { 3815 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3816 result.mMoveGeneration = nativeMoveGeneration(); 3817 result.mFrame = nativeCursorFramePointer(); 3818 Point position = nativeCursorPosition(); 3819 result.mX = position.x; 3820 result.mY = position.y; 3821 return result; 3822 } 3823 3824 /** 3825 * Delete text from start to end in the focused textfield. If there is no 3826 * focus, or if start == end, silently fail. If start and end are out of 3827 * order, swap them. 3828 * @param start Beginning of selection to delete. 3829 * @param end End of selection to delete. 3830 */ 3831 /* package */ void deleteSelection(int start, int end) { 3832 mTextGeneration++; 3833 WebViewCore.TextSelectionData data 3834 = new WebViewCore.TextSelectionData(start, end); 3835 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3836 data); 3837 } 3838 3839 /** 3840 * Set the selection to (start, end) in the focused textfield. If start and 3841 * end are out of order, swap them. 3842 * @param start Beginning of selection. 3843 * @param end End of selection. 3844 */ 3845 /* package */ void setSelection(int start, int end) { 3846 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3847 } 3848 3849 @Override 3850 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3851 InputConnection connection = super.onCreateInputConnection(outAttrs); 3852 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3853 return connection; 3854 } 3855 3856 /** 3857 * Called in response to a message from webkit telling us that the soft 3858 * keyboard should be launched. 3859 */ 3860 private void displaySoftKeyboard(boolean isTextView) { 3861 InputMethodManager imm = (InputMethodManager) 3862 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3863 3864 // bring it back to the default scale so that user can enter text 3865 boolean zoom = mActualScale < mDefaultScale; 3866 if (zoom) { 3867 mInZoomOverview = false; 3868 mZoomCenterX = mLastTouchX; 3869 mZoomCenterY = mLastTouchY; 3870 // do not change text wrap scale so that there is no reflow 3871 setNewZoomScale(mDefaultScale, false, false); 3872 } 3873 if (isTextView) { 3874 rebuildWebTextView(); 3875 if (inEditingMode()) { 3876 imm.showSoftInput(mWebTextView, 0); 3877 if (zoom) { 3878 didUpdateTextViewBounds(true); 3879 } 3880 return; 3881 } 3882 } 3883 // Used by plugins. 3884 // Also used if the navigation cache is out of date, and 3885 // does not recognize that a textfield is in focus. In that 3886 // case, use WebView as the targeted view. 3887 // see http://b/issue?id=2457459 3888 imm.showSoftInput(this, 0); 3889 } 3890 3891 // Called by WebKit to instruct the UI to hide the keyboard 3892 private void hideSoftKeyboard() { 3893 InputMethodManager imm = (InputMethodManager) 3894 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3895 3896 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3897 } 3898 3899 /* 3900 * This method checks the current focus and cursor and potentially rebuilds 3901 * mWebTextView to have the appropriate properties, such as password, 3902 * multiline, and what text it contains. It also removes it if necessary. 3903 */ 3904 /* package */ void rebuildWebTextView() { 3905 // If the WebView does not have focus, do nothing until it gains focus. 3906 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3907 return; 3908 } 3909 boolean alreadyThere = inEditingMode(); 3910 // inEditingMode can only return true if mWebTextView is non-null, 3911 // so we can safely call remove() if (alreadyThere) 3912 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3913 if (alreadyThere) { 3914 mWebTextView.remove(); 3915 } 3916 return; 3917 } 3918 // At this point, we know we have found an input field, so go ahead 3919 // and create the WebTextView if necessary. 3920 if (mWebTextView == null) { 3921 mWebTextView = new WebTextView(mContext, WebView.this); 3922 // Initialize our generation number. 3923 mTextGeneration = 0; 3924 } 3925 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3926 contentToViewDimension(nativeFocusCandidateTextSize())); 3927 Rect visibleRect = new Rect(); 3928 calcOurContentVisibleRect(visibleRect); 3929 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3930 // should be in content coordinates. 3931 Rect bounds = nativeFocusCandidateNodeBounds(); 3932 Rect vBox = contentToViewRect(bounds); 3933 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3934 if (!Rect.intersects(bounds, visibleRect)) { 3935 mWebTextView.bringIntoView(); 3936 } 3937 String text = nativeFocusCandidateText(); 3938 int nodePointer = nativeFocusCandidatePointer(); 3939 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3940 // It is possible that we have the same textfield, but it has moved, 3941 // i.e. In the case of opening/closing the screen. 3942 // In that case, we need to set the dimensions, but not the other 3943 // aspects. 3944 // If the text has been changed by webkit, update it. However, if 3945 // there has been more UI text input, ignore it. We will receive 3946 // another update when that text is recognized. 3947 if (text != null && !text.equals(mWebTextView.getText().toString()) 3948 && nativeTextGeneration() == mTextGeneration) { 3949 mWebTextView.setTextAndKeepSelection(text); 3950 } 3951 } else { 3952 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3953 Gravity.RIGHT : Gravity.NO_GRAVITY); 3954 // This needs to be called before setType, which may call 3955 // requestFormData, and it needs to have the correct nodePointer. 3956 mWebTextView.setNodePointer(nodePointer); 3957 mWebTextView.setType(nativeFocusCandidateType()); 3958 if (null == text) { 3959 if (DebugFlags.WEB_VIEW) { 3960 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3961 } 3962 text = ""; 3963 } 3964 mWebTextView.setTextAndKeepSelection(text); 3965 InputMethodManager imm = InputMethodManager.peekInstance(); 3966 if (imm != null && imm.isActive(mWebTextView)) { 3967 imm.restartInput(mWebTextView); 3968 } 3969 } 3970 mWebTextView.requestFocus(); 3971 } 3972 3973 /** 3974 * Called by WebTextView to find saved form data associated with the 3975 * textfield 3976 * @param name Name of the textfield. 3977 * @param nodePointer Pointer to the node of the textfield, so it can be 3978 * compared to the currently focused textfield when the data is 3979 * retrieved. 3980 */ 3981 /* package */ void requestFormData(String name, int nodePointer) { 3982 if (mWebViewCore.getSettings().getSaveFormData()) { 3983 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3984 update.arg1 = nodePointer; 3985 RequestFormData updater = new RequestFormData(name, getUrl(), 3986 update); 3987 Thread t = new Thread(updater); 3988 t.start(); 3989 } 3990 } 3991 3992 /** 3993 * Pass a message to find out the <label> associated with the <input> 3994 * identified by nodePointer 3995 * @param framePointer Pointer to the frame containing the <input> node 3996 * @param nodePointer Pointer to the node for which a <label> is desired. 3997 */ 3998 /* package */ void requestLabel(int framePointer, int nodePointer) { 3999 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4000 nodePointer); 4001 } 4002 4003 /* 4004 * This class requests an Adapter for the WebTextView which shows past 4005 * entries stored in the database. It is a Runnable so that it can be done 4006 * in its own thread, without slowing down the UI. 4007 */ 4008 private class RequestFormData implements Runnable { 4009 private String mName; 4010 private String mUrl; 4011 private Message mUpdateMessage; 4012 4013 public RequestFormData(String name, String url, Message msg) { 4014 mName = name; 4015 mUrl = url; 4016 mUpdateMessage = msg; 4017 } 4018 4019 public void run() { 4020 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 4021 if (pastEntries.size() > 0) { 4022 AutoCompleteAdapter adapter = new 4023 AutoCompleteAdapter(mContext, pastEntries); 4024 mUpdateMessage.obj = adapter; 4025 mUpdateMessage.sendToTarget(); 4026 } 4027 } 4028 } 4029 4030 /** 4031 * Dump the display tree to "/sdcard/displayTree.txt" 4032 * 4033 * @hide debug only 4034 */ 4035 public void dumpDisplayTree() { 4036 nativeDumpDisplayTree(getUrl()); 4037 } 4038 4039 /** 4040 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4041 * "/sdcard/domTree.txt" 4042 * 4043 * @hide debug only 4044 */ 4045 public void dumpDomTree(boolean toFile) { 4046 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4047 } 4048 4049 /** 4050 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4051 * to "/sdcard/renderTree.txt" 4052 * 4053 * @hide debug only 4054 */ 4055 public void dumpRenderTree(boolean toFile) { 4056 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4057 } 4058 4059 /** 4060 * Dump the V8 counters to standard output. 4061 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4062 * true. Otherwise, this will do nothing. 4063 * 4064 * @hide debug only 4065 */ 4066 public void dumpV8Counters() { 4067 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4068 } 4069 4070 // This is used to determine long press with the center key. Does not 4071 // affect long press with the trackball/touch. 4072 private boolean mGotCenterDown = false; 4073 4074 @Override 4075 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4076 // send complex characters to webkit for use by JS and plugins 4077 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4078 // pass the key to DOM 4079 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4080 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4081 // return true as DOM handles the key 4082 return true; 4083 } 4084 return false; 4085 } 4086 4087 @Override 4088 public boolean onKeyDown(int keyCode, KeyEvent event) { 4089 if (DebugFlags.WEB_VIEW) { 4090 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4091 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4092 } 4093 4094 if (mNativeClass == 0) { 4095 return false; 4096 } 4097 4098 // do this hack up front, so it always works, regardless of touch-mode 4099 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4100 mAutoRedraw = !mAutoRedraw; 4101 if (mAutoRedraw) { 4102 invalidate(); 4103 } 4104 return true; 4105 } 4106 4107 // Bubble up the key event if 4108 // 1. it is a system key; or 4109 // 2. the host application wants to handle it; 4110 if (event.isSystem() 4111 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4112 return false; 4113 } 4114 4115 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4116 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4117 if (nativeFocusIsPlugin()) { 4118 mShiftIsPressed = true; 4119 } else if (!nativeCursorWantsKeyEvents() && !mSelectingText) { 4120 setUpSelect(); 4121 } 4122 } 4123 4124 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4125 pageUp(false); 4126 return true; 4127 } 4128 4129 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4130 pageDown(false); 4131 return true; 4132 } 4133 4134 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4135 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4136 switchOutDrawHistory(); 4137 if (nativeFocusIsPlugin()) { 4138 letPluginHandleNavKey(keyCode, event.getEventTime(), true); 4139 return true; 4140 } 4141 if (mSelectingText) { 4142 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4143 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4144 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4145 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4146 int multiplier = event.getRepeatCount() + 1; 4147 moveSelection(xRate * multiplier, yRate * multiplier); 4148 return true; 4149 } 4150 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4151 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4152 return true; 4153 } 4154 // Bubble up the key event as WebView doesn't handle it 4155 return false; 4156 } 4157 4158 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4159 switchOutDrawHistory(); 4160 if (event.getRepeatCount() == 0) { 4161 if (mSelectingText) { 4162 return true; // discard press if copy in progress 4163 } 4164 mGotCenterDown = true; 4165 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4166 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4167 // Already checked mNativeClass, so we do not need to check it 4168 // again. 4169 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4170 return true; 4171 } 4172 // Bubble up the key event as WebView doesn't handle it 4173 return false; 4174 } 4175 4176 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 4177 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 4178 // turn off copy select if a shift-key combo is pressed 4179 selectionDone(); 4180 mShiftIsPressed = false; 4181 } 4182 4183 if (getSettings().getNavDump()) { 4184 switch (keyCode) { 4185 case KeyEvent.KEYCODE_4: 4186 dumpDisplayTree(); 4187 break; 4188 case KeyEvent.KEYCODE_5: 4189 case KeyEvent.KEYCODE_6: 4190 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4191 break; 4192 case KeyEvent.KEYCODE_7: 4193 case KeyEvent.KEYCODE_8: 4194 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4195 break; 4196 case KeyEvent.KEYCODE_9: 4197 nativeInstrumentReport(); 4198 return true; 4199 } 4200 } 4201 4202 if (nativeCursorIsTextInput()) { 4203 // This message will put the node in focus, for the DOM's notion 4204 // of focus, and make the focuscontroller active 4205 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 4206 nativeCursorNodePointer()); 4207 // This will bring up the WebTextView and put it in focus, for 4208 // our view system's notion of focus 4209 rebuildWebTextView(); 4210 // Now we need to pass the event to it 4211 if (inEditingMode()) { 4212 mWebTextView.setDefaultSelection(); 4213 return mWebTextView.dispatchKeyEvent(event); 4214 } 4215 } else if (nativeHasFocusNode()) { 4216 // In this case, the cursor is not on a text input, but the focus 4217 // might be. Check it, and if so, hand over to the WebTextView. 4218 rebuildWebTextView(); 4219 if (inEditingMode()) { 4220 mWebTextView.setDefaultSelection(); 4221 return mWebTextView.dispatchKeyEvent(event); 4222 } 4223 } 4224 4225 // TODO: should we pass all the keys to DOM or check the meta tag 4226 if (nativeCursorWantsKeyEvents() || true) { 4227 // pass the key to DOM 4228 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4229 // return true as DOM handles the key 4230 return true; 4231 } 4232 4233 // Bubble up the key event as WebView doesn't handle it 4234 return false; 4235 } 4236 4237 @Override 4238 public boolean onKeyUp(int keyCode, KeyEvent event) { 4239 if (DebugFlags.WEB_VIEW) { 4240 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4241 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4242 } 4243 4244 if (mNativeClass == 0) { 4245 return false; 4246 } 4247 4248 // special CALL handling when cursor node's href is "tel:XXX" 4249 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4250 String text = nativeCursorText(); 4251 if (!nativeCursorIsTextInput() && text != null 4252 && text.startsWith(SCHEME_TEL)) { 4253 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4254 getContext().startActivity(intent); 4255 return true; 4256 } 4257 } 4258 4259 // Bubble up the key event if 4260 // 1. it is a system key; or 4261 // 2. the host application wants to handle it; 4262 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 4263 return false; 4264 } 4265 4266 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4267 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4268 if (nativeFocusIsPlugin()) { 4269 mShiftIsPressed = false; 4270 } else if (copySelection()) { 4271 selectionDone(); 4272 return true; 4273 } 4274 } 4275 4276 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4277 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4278 if (nativeFocusIsPlugin()) { 4279 letPluginHandleNavKey(keyCode, event.getEventTime(), false); 4280 return true; 4281 } 4282 // always handle the navigation keys in the UI thread 4283 // Bubble up the key event as WebView doesn't handle it 4284 return false; 4285 } 4286 4287 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4288 // remove the long press message first 4289 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4290 mGotCenterDown = false; 4291 4292 if (mSelectingText) { 4293 if (mExtendSelection) { 4294 copySelection(); 4295 selectionDone(); 4296 } else { 4297 mExtendSelection = true; 4298 nativeSetExtendSelection(); 4299 invalidate(); // draw the i-beam instead of the arrow 4300 } 4301 return true; // discard press if copy in progress 4302 } 4303 4304 // perform the single click 4305 Rect visibleRect = sendOurVisibleRect(); 4306 // Note that sendOurVisibleRect calls viewToContent, so the 4307 // coordinates should be in content coordinates. 4308 if (!nativeCursorIntersects(visibleRect)) { 4309 return false; 4310 } 4311 WebViewCore.CursorData data = cursorData(); 4312 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4313 playSoundEffect(SoundEffectConstants.CLICK); 4314 if (nativeCursorIsTextInput()) { 4315 rebuildWebTextView(); 4316 centerKeyPressOnTextField(); 4317 if (inEditingMode()) { 4318 mWebTextView.setDefaultSelection(); 4319 } 4320 return true; 4321 } 4322 clearTextEntry(true); 4323 nativeSetFollowedLink(true); 4324 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4325 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4326 nativeCursorNodePointer()); 4327 } 4328 return true; 4329 } 4330 4331 // TODO: should we pass all the keys to DOM or check the meta tag 4332 if (nativeCursorWantsKeyEvents() || true) { 4333 // pass the key to DOM 4334 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4335 // return true as DOM handles the key 4336 return true; 4337 } 4338 4339 // Bubble up the key event as WebView doesn't handle it 4340 return false; 4341 } 4342 4343 /** 4344 * @hide pending API council approval. 4345 */ 4346 public void setUpSelect() { 4347 if (0 == mNativeClass) return; // client isn't initialized 4348 if (inFullScreenMode()) return; 4349 if (mSelectingText) return; 4350 mExtendSelection = false; 4351 mSelectingText = mDrawSelectionPointer = true; 4352 // don't let the picture change during text selection 4353 WebViewCore.pauseUpdatePicture(mWebViewCore); 4354 nativeResetSelection(); 4355 if (nativeHasCursorNode()) { 4356 Rect rect = nativeCursorNodeBounds(); 4357 mSelectX = contentToViewX(rect.left); 4358 mSelectY = contentToViewY(rect.top); 4359 } else if (mLastTouchY > getVisibleTitleHeight()) { 4360 mSelectX = mScrollX + (int) mLastTouchX; 4361 mSelectY = mScrollY + (int) mLastTouchY; 4362 } else { 4363 mSelectX = mScrollX + getViewWidth() / 2; 4364 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4365 } 4366 nativeHideCursor(); 4367 } 4368 4369 /** 4370 * Use this method to put the WebView into text selection mode. 4371 * Do not rely on this functionality; it will be deprecated in the future. 4372 */ 4373 public void emulateShiftHeld() { 4374 setUpSelect(); 4375 } 4376 4377 /** 4378 * @hide pending API council approval. 4379 */ 4380 public void selectAll() { 4381 if (0 == mNativeClass) return; // client isn't initialized 4382 if (inFullScreenMode()) return; 4383 if (!mSelectingText) setUpSelect(); 4384 nativeSelectAll(); 4385 mDrawSelectionPointer = false; 4386 mExtendSelection = true; 4387 invalidate(); 4388 } 4389 4390 /** 4391 * @hide pending API council approval. 4392 */ 4393 public boolean selectDialogIsUp() { 4394 return mSelectingText; 4395 } 4396 4397 /** 4398 * @hide pending API council approval. 4399 */ 4400 public void notifySelectDialogDismissed() { 4401 mSelectingText = false; 4402 WebViewCore.resumeUpdatePicture(mWebViewCore); 4403 } 4404 4405 /** 4406 * @hide pending API council approval. 4407 */ 4408 public void selectionDone() { 4409 if (mSelectingText) { 4410 WebChromeClient client = getWebChromeClient(); 4411 if (client != null) client.onSelectionDone(this); 4412 invalidate(); // redraw without selection 4413 notifySelectDialogDismissed(); 4414 } 4415 } 4416 4417 /** 4418 * @hide pending API council approval. 4419 */ 4420 public boolean copySelection() { 4421 boolean copiedSomething = false; 4422 String selection = getSelection(); 4423 if (selection != "") { 4424 if (DebugFlags.WEB_VIEW) { 4425 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4426 } 4427 Toast.makeText(mContext 4428 , com.android.internal.R.string.text_copied 4429 , Toast.LENGTH_SHORT).show(); 4430 copiedSomething = true; 4431 try { 4432 IClipboard clip = IClipboard.Stub.asInterface( 4433 ServiceManager.getService("clipboard")); 4434 clip.setClipboardText(selection); 4435 } catch (android.os.RemoteException e) { 4436 Log.e(LOGTAG, "Clipboard failed", e); 4437 } 4438 } 4439 invalidate(); // remove selection region and pointer 4440 return copiedSomething; 4441 } 4442 4443 /** 4444 * @hide pending API council approval. 4445 */ 4446 public String getSelection() { 4447 if (mNativeClass == 0) return ""; 4448 return nativeGetSelection(); 4449 } 4450 4451 @Override 4452 protected void onAttachedToWindow() { 4453 super.onAttachedToWindow(); 4454 if (hasWindowFocus()) setActive(true); 4455 } 4456 4457 @Override 4458 protected void onDetachedFromWindow() { 4459 clearHelpers(); 4460 dismissZoomControl(); 4461 if (hasWindowFocus()) setActive(false); 4462 super.onDetachedFromWindow(); 4463 } 4464 4465 /** 4466 * @deprecated WebView no longer needs to implement 4467 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4468 */ 4469 @Deprecated 4470 public void onChildViewAdded(View parent, View child) {} 4471 4472 /** 4473 * @deprecated WebView no longer needs to implement 4474 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4475 */ 4476 @Deprecated 4477 public void onChildViewRemoved(View p, View child) {} 4478 4479 /** 4480 * @deprecated WebView should not have implemented 4481 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4482 * does nothing now. 4483 */ 4484 @Deprecated 4485 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4486 } 4487 4488 private void setActive(boolean active) { 4489 if (active) { 4490 if (hasFocus()) { 4491 // If our window regained focus, and we have focus, then begin 4492 // drawing the cursor ring 4493 mDrawCursorRing = true; 4494 if (mNativeClass != 0) { 4495 nativeRecordButtons(true, false, true); 4496 if (inEditingMode()) { 4497 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4498 } 4499 } 4500 } else { 4501 // If our window gained focus, but we do not have it, do not 4502 // draw the cursor ring. 4503 mDrawCursorRing = false; 4504 // We do not call nativeRecordButtons here because we assume 4505 // that when we lost focus, or window focus, it got called with 4506 // false for the first parameter 4507 } 4508 } else { 4509 if (mWebViewCore != null && getSettings().getBuiltInZoomControls() 4510 && (mZoomButtonsController == null || 4511 !mZoomButtonsController.isVisible())) { 4512 /* 4513 * The zoom controls come in their own window, so our window 4514 * loses focus. Our policy is to not draw the cursor ring if 4515 * our window is not focused, but this is an exception since 4516 * the user can still navigate the web page with the zoom 4517 * controls showing. 4518 */ 4519 // If our window has lost focus, stop drawing the cursor ring 4520 mDrawCursorRing = false; 4521 } 4522 mGotKeyDown = false; 4523 mShiftIsPressed = false; 4524 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4525 mTouchMode = TOUCH_DONE_MODE; 4526 if (mNativeClass != 0) { 4527 nativeRecordButtons(false, false, true); 4528 } 4529 setFocusControllerInactive(); 4530 } 4531 invalidate(); 4532 } 4533 4534 // To avoid drawing the cursor ring, and remove the TextView when our window 4535 // loses focus. 4536 @Override 4537 public void onWindowFocusChanged(boolean hasWindowFocus) { 4538 setActive(hasWindowFocus); 4539 if (hasWindowFocus) { 4540 JWebCoreJavaBridge.setActiveWebView(this); 4541 } else { 4542 JWebCoreJavaBridge.removeActiveWebView(this); 4543 } 4544 super.onWindowFocusChanged(hasWindowFocus); 4545 } 4546 4547 /* 4548 * Pass a message to WebCore Thread, telling the WebCore::Page's 4549 * FocusController to be "inactive" so that it will 4550 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4551 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4552 */ 4553 /* package */ void setFocusControllerInactive() { 4554 // Do not need to also check whether mWebViewCore is null, because 4555 // mNativeClass is only set if mWebViewCore is non null 4556 if (mNativeClass == 0) return; 4557 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4558 } 4559 4560 @Override 4561 protected void onFocusChanged(boolean focused, int direction, 4562 Rect previouslyFocusedRect) { 4563 if (DebugFlags.WEB_VIEW) { 4564 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4565 } 4566 if (focused) { 4567 // When we regain focus, if we have window focus, resume drawing 4568 // the cursor ring 4569 if (hasWindowFocus()) { 4570 mDrawCursorRing = true; 4571 if (mNativeClass != 0) { 4572 nativeRecordButtons(true, false, true); 4573 } 4574 //} else { 4575 // The WebView has gained focus while we do not have 4576 // windowfocus. When our window lost focus, we should have 4577 // called nativeRecordButtons(false...) 4578 } 4579 } else { 4580 // When we lost focus, unless focus went to the TextView (which is 4581 // true if we are in editing mode), stop drawing the cursor ring. 4582 if (!inEditingMode()) { 4583 mDrawCursorRing = false; 4584 if (mNativeClass != 0) { 4585 nativeRecordButtons(false, false, true); 4586 } 4587 setFocusControllerInactive(); 4588 } 4589 mGotKeyDown = false; 4590 } 4591 4592 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4593 } 4594 4595 /** 4596 * @hide 4597 */ 4598 @Override 4599 protected boolean setFrame(int left, int top, int right, int bottom) { 4600 boolean changed = super.setFrame(left, top, right, bottom); 4601 if (!changed && mHeightCanMeasure) { 4602 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4603 // in WebViewCore after we get the first layout. We do call 4604 // requestLayout() when we get contentSizeChanged(). But the View 4605 // system won't call onSizeChanged if the dimension is not changed. 4606 // In this case, we need to call sendViewSizeZoom() explicitly to 4607 // notify the WebKit about the new dimensions. 4608 sendViewSizeZoom(); 4609 } 4610 return changed; 4611 } 4612 4613 private static class PostScale implements Runnable { 4614 final WebView mWebView; 4615 final boolean mUpdateTextWrap; 4616 4617 public PostScale(WebView webView, boolean updateTextWrap) { 4618 mWebView = webView; 4619 mUpdateTextWrap = updateTextWrap; 4620 } 4621 4622 public void run() { 4623 if (mWebView.mWebViewCore != null) { 4624 // we always force, in case our height changed, in which case we 4625 // still want to send the notification over to webkit. 4626 mWebView.setNewZoomScale(mWebView.mActualScale, 4627 mUpdateTextWrap, true); 4628 // update the zoom buttons as the scale can be changed 4629 if (mWebView.getSettings().getBuiltInZoomControls()) { 4630 mWebView.updateZoomButtonsEnabled(); 4631 } 4632 } 4633 } 4634 } 4635 4636 @Override 4637 protected void onSizeChanged(int w, int h, int ow, int oh) { 4638 super.onSizeChanged(w, h, ow, oh); 4639 // Center zooming to the center of the screen. 4640 if (mZoomScale == 0) { // unless we're already zooming 4641 // To anchor at top left corner. 4642 mZoomCenterX = 0; 4643 mZoomCenterY = getVisibleTitleHeight(); 4644 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4645 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4646 } 4647 4648 // adjust the max viewport width depending on the view dimensions. This 4649 // is to ensure the scaling is not going insane. So do not shrink it if 4650 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4651 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4652 if (newMaxViewportWidth > sMaxViewportWidth) { 4653 sMaxViewportWidth = newMaxViewportWidth; 4654 } 4655 4656 // update mMinZoomScale if the minimum zoom scale is not fixed 4657 if (!mMinZoomScaleFixed) { 4658 // when change from narrow screen to wide screen, the new viewWidth 4659 // can be wider than the old content width. We limit the minimum 4660 // scale to 1.0f. The proper minimum scale will be calculated when 4661 // the new picture shows up. 4662 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4663 / (mDrawHistory ? mHistoryPicture.getWidth() 4664 : mZoomOverviewWidth)); 4665 if (mInitialScaleInPercent > 0) { 4666 // limit the minZoomScale to the initialScale if it is set 4667 float initialScale = mInitialScaleInPercent / 100.0f; 4668 if (mMinZoomScale > initialScale) { 4669 mMinZoomScale = initialScale; 4670 } 4671 } 4672 } 4673 4674 dismissZoomControl(); 4675 4676 // onSizeChanged() is called during WebView layout. And any 4677 // requestLayout() is blocked during layout. As setNewZoomScale() will 4678 // call its child View to reposition itself through ViewManager's 4679 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4680 // <b/> 4681 // only update the text wrap scale if width changed. 4682 post(new PostScale(this, w != ow)); 4683 } 4684 4685 @Override 4686 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4687 super.onScrollChanged(l, t, oldl, oldt); 4688 if (!mInOverScrollMode) { 4689 sendOurVisibleRect(); 4690 // update WebKit if visible title bar height changed. The logic is same 4691 // as getVisibleTitleHeight. 4692 int titleHeight = getTitleHeight(); 4693 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4694 sendViewSizeZoom(); 4695 } 4696 } 4697 } 4698 4699 @Override 4700 public boolean dispatchKeyEvent(KeyEvent event) { 4701 boolean dispatch = true; 4702 4703 // Textfields and plugins need to receive the shift up key even if 4704 // another key was released while the shift key was held down. 4705 if (!inEditingMode() && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 4706 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4707 mGotKeyDown = true; 4708 } else { 4709 if (!mGotKeyDown) { 4710 /* 4711 * We got a key up for which we were not the recipient of 4712 * the original key down. Don't give it to the view. 4713 */ 4714 dispatch = false; 4715 } 4716 mGotKeyDown = false; 4717 } 4718 } 4719 4720 if (dispatch) { 4721 return super.dispatchKeyEvent(event); 4722 } else { 4723 // We didn't dispatch, so let something else handle the key 4724 return false; 4725 } 4726 } 4727 4728 // Here are the snap align logic: 4729 // 1. If it starts nearly horizontally or vertically, snap align; 4730 // 2. If there is a dramitic direction change, let it go; 4731 // 3. If there is a same direction back and forth, lock it. 4732 4733 // adjustable parameters 4734 private int mMinLockSnapReverseDistance; 4735 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4736 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4737 4738 private static int sign(float x) { 4739 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4740 } 4741 4742 // if the page can scroll <= this value, we won't allow the drag tracker 4743 // to have any effect. 4744 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4745 4746 private class DragTrackerHandler { 4747 private final DragTracker mProxy; 4748 private final float mStartY, mStartX; 4749 private final float mMinDY, mMinDX; 4750 private final float mMaxDY, mMaxDX; 4751 private float mCurrStretchY, mCurrStretchX; 4752 private int mSX, mSY; 4753 private Interpolator mInterp; 4754 private float[] mXY = new float[2]; 4755 4756 // inner (non-state) classes can't have enums :( 4757 private static final int DRAGGING_STATE = 0; 4758 private static final int ANIMATING_STATE = 1; 4759 private static final int FINISHED_STATE = 2; 4760 private int mState; 4761 4762 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4763 mProxy = proxy; 4764 4765 int docBottom = computeRealVerticalScrollRange() + getTitleHeight(); 4766 int viewTop = getScrollY(); 4767 int viewBottom = viewTop + getHeight(); 4768 4769 mStartY = y; 4770 mMinDY = -viewTop; 4771 mMaxDY = docBottom - viewBottom; 4772 4773 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4774 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4775 " up/down= " + mMinDY + " " + mMaxDY); 4776 } 4777 4778 int docRight = computeRealHorizontalScrollRange(); 4779 int viewLeft = getScrollX(); 4780 int viewRight = viewLeft + getWidth(); 4781 mStartX = x; 4782 mMinDX = -viewLeft; 4783 mMaxDX = docRight - viewRight; 4784 4785 mState = DRAGGING_STATE; 4786 mProxy.onStartDrag(x, y); 4787 4788 // ensure we buildBitmap at least once 4789 mSX = -99999; 4790 } 4791 4792 private float computeStretch(float delta, float min, float max) { 4793 float stretch = 0; 4794 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4795 if (delta < min) { 4796 stretch = delta - min; 4797 } else if (delta > max) { 4798 stretch = delta - max; 4799 } 4800 } 4801 return stretch; 4802 } 4803 4804 public void dragTo(float x, float y) { 4805 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4806 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4807 4808 if ((mSnapScrollMode & SNAP_X) != 0) { 4809 sy = 0; 4810 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4811 sx = 0; 4812 } 4813 4814 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4815 mCurrStretchX = sx; 4816 mCurrStretchY = sy; 4817 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4818 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4819 " " + sy); 4820 } 4821 if (mProxy.onStretchChange(sx, sy)) { 4822 invalidate(); 4823 } 4824 } 4825 } 4826 4827 public void stopDrag() { 4828 final int DURATION = 200; 4829 int now = (int)SystemClock.uptimeMillis(); 4830 mInterp = new Interpolator(2); 4831 mXY[0] = mCurrStretchX; 4832 mXY[1] = mCurrStretchY; 4833 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4834 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4835 mInterp.setKeyFrame(0, now, mXY, blend); 4836 float[] zerozero = new float[] { 0, 0 }; 4837 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4838 mState = ANIMATING_STATE; 4839 4840 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4841 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4842 } 4843 } 4844 4845 // Call this after each draw. If it ruturns null, the tracker is done 4846 public boolean isFinished() { 4847 return mState == FINISHED_STATE; 4848 } 4849 4850 private int hiddenHeightOfTitleBar() { 4851 return getTitleHeight() - getVisibleTitleHeight(); 4852 } 4853 4854 // need a way to know if 565 or 8888 is the right config for 4855 // capturing the display and giving it to the drag proxy 4856 private Bitmap.Config offscreenBitmapConfig() { 4857 // hard code 565 for now 4858 return Bitmap.Config.RGB_565; 4859 } 4860 4861 /* If the tracker draws, then this returns true, otherwise it will 4862 return false, and draw nothing. 4863 */ 4864 public boolean draw(Canvas canvas) { 4865 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4866 int sx = getScrollX(); 4867 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4868 if (mSX != sx || mSY != sy) { 4869 buildBitmap(sx, sy); 4870 mSX = sx; 4871 mSY = sy; 4872 } 4873 4874 if (mState == ANIMATING_STATE) { 4875 Interpolator.Result result = mInterp.timeToValues(mXY); 4876 if (result == Interpolator.Result.FREEZE_END) { 4877 mState = FINISHED_STATE; 4878 return false; 4879 } else { 4880 mProxy.onStretchChange(mXY[0], mXY[1]); 4881 invalidate(); 4882 // fall through to the draw 4883 } 4884 } 4885 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4886 canvas.translate(sx, sy); 4887 mProxy.onDraw(canvas); 4888 canvas.restoreToCount(count); 4889 return true; 4890 } 4891 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4892 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4893 mCurrStretchX + " " + mCurrStretchY); 4894 } 4895 return false; 4896 } 4897 4898 private void buildBitmap(int sx, int sy) { 4899 int w = getWidth(); 4900 int h = getViewHeight(); 4901 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4902 Canvas canvas = new Canvas(bm); 4903 canvas.translate(-sx, -sy); 4904 drawContent(canvas); 4905 4906 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4907 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4908 " " + sy + " " + w + " " + h); 4909 } 4910 mProxy.onBitmapChange(bm); 4911 } 4912 } 4913 4914 /** @hide */ 4915 public static class DragTracker { 4916 public void onStartDrag(float x, float y) {} 4917 public boolean onStretchChange(float sx, float sy) { 4918 // return true to have us inval the view 4919 return false; 4920 } 4921 public void onStopDrag() {} 4922 public void onBitmapChange(Bitmap bm) {} 4923 public void onDraw(Canvas canvas) {} 4924 } 4925 4926 /** @hide */ 4927 public DragTracker getDragTracker() { 4928 return mDragTracker; 4929 } 4930 4931 /** @hide */ 4932 public void setDragTracker(DragTracker tracker) { 4933 mDragTracker = tracker; 4934 } 4935 4936 private DragTracker mDragTracker; 4937 private DragTrackerHandler mDragTrackerHandler; 4938 4939 private class ScaleDetectorListener implements 4940 ScaleGestureDetector.OnScaleGestureListener { 4941 4942 public boolean onScaleBegin(ScaleGestureDetector detector) { 4943 // cancel the single touch handling 4944 cancelTouch(); 4945 dismissZoomControl(); 4946 // reset the zoom overview mode so that the page won't auto grow 4947 mInZoomOverview = false; 4948 // If it is in password mode, turn it off so it does not draw 4949 // misplaced. 4950 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4951 mWebTextView.setInPassword(false); 4952 } 4953 4954 mViewManager.startZoom(); 4955 4956 return true; 4957 } 4958 4959 public void onScaleEnd(ScaleGestureDetector detector) { 4960 if (mPreviewZoomOnly) { 4961 mPreviewZoomOnly = false; 4962 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4963 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4964 // don't reflow when zoom in; when zoom out, do reflow if the 4965 // new scale is almost minimum scale; 4966 boolean reflowNow = (mActualScale - mMinZoomScale 4967 <= MINIMUM_SCALE_INCREMENT) 4968 || ((mActualScale <= 0.8 * mTextWrapScale)); 4969 // force zoom after mPreviewZoomOnly is set to false so that the 4970 // new view size will be passed to the WebKit 4971 setNewZoomScale(mActualScale, reflowNow, true); 4972 // call invalidate() to draw without zoom filter 4973 invalidate(); 4974 } 4975 // adjust the edit text view if needed 4976 if (inEditingMode() && didUpdateTextViewBounds(false) 4977 && nativeFocusCandidateIsPassword()) { 4978 // If it is a password field, start drawing the 4979 // WebTextView once again. 4980 mWebTextView.setInPassword(true); 4981 } 4982 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4983 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4984 // may trigger the unwanted fling. 4985 mTouchMode = TOUCH_PINCH_DRAG; 4986 mConfirmMove = true; 4987 startTouch(detector.getFocusX(), detector.getFocusY(), 4988 mLastTouchTime); 4989 4990 mViewManager.endZoom(); 4991 } 4992 4993 public boolean onScale(ScaleGestureDetector detector) { 4994 float scale = (float) (Math.round(detector.getScaleFactor() 4995 * mActualScale * 100) / 100.0); 4996 if (Math.abs(scale - mActualScale) >= MINIMUM_SCALE_INCREMENT) { 4997 mPreviewZoomOnly = true; 4998 // limit the scale change per step 4999 if (scale > mActualScale) { 5000 scale = Math.min(scale, mActualScale * 1.25f); 5001 } else { 5002 scale = Math.max(scale, mActualScale * 0.8f); 5003 } 5004 mZoomCenterX = detector.getFocusX(); 5005 mZoomCenterY = detector.getFocusY(); 5006 setNewZoomScale(scale, false, false); 5007 invalidate(); 5008 return true; 5009 } 5010 return false; 5011 } 5012 } 5013 5014 private boolean hitFocusedPlugin(int contentX, int contentY) { 5015 if (DebugFlags.WEB_VIEW) { 5016 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5017 Rect r = nativeFocusNodeBounds(); 5018 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5019 + ", " + r.right + ", " + r.bottom + ")"); 5020 } 5021 return nativeFocusIsPlugin() 5022 && nativeFocusNodeBounds().contains(contentX, contentY); 5023 } 5024 5025 private boolean shouldForwardTouchEvent() { 5026 return mFullScreenHolder != null || (mForwardTouchEvents 5027 && !mSelectingText 5028 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5029 } 5030 5031 private boolean inFullScreenMode() { 5032 return mFullScreenHolder != null; 5033 } 5034 5035 @Override 5036 public boolean onTouchEvent(MotionEvent ev) { 5037 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5038 return false; 5039 } 5040 5041 if (DebugFlags.WEB_VIEW) { 5042 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 5043 + mTouchMode); 5044 } 5045 5046 int action; 5047 float x, y; 5048 long eventTime = ev.getEventTime(); 5049 5050 // FIXME: we may consider to give WebKit an option to handle multi-touch 5051 // events later. 5052 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 5053 if (mAllowPanAndScale || mMinZoomScale < mMaxZoomScale) { 5054 mScaleDetector.onTouchEvent(ev); 5055 if (mScaleDetector.isInProgress()) { 5056 mLastTouchTime = eventTime; 5057 if (!mAllowPanAndScale) { 5058 return true; 5059 } 5060 } 5061 x = mScaleDetector.getFocusX(); 5062 y = mScaleDetector.getFocusY(); 5063 action = ev.getAction() & MotionEvent.ACTION_MASK; 5064 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5065 cancelTouch(); 5066 action = MotionEvent.ACTION_DOWN; 5067 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5068 // set mLastTouchX/Y to the remaining point 5069 mLastTouchX = x; 5070 mLastTouchY = y; 5071 } else if (action == MotionEvent.ACTION_MOVE) { 5072 // negative x or y indicate it is on the edge, skip it. 5073 if (x < 0 || y < 0) { 5074 return true; 5075 } 5076 } 5077 } else { 5078 // if the page disallow zoom, skip multi-pointer action 5079 return true; 5080 } 5081 } else { 5082 action = ev.getAction(); 5083 x = ev.getX(); 5084 y = ev.getY(); 5085 } 5086 5087 // Due to the touch screen edge effect, a touch closer to the edge 5088 // always snapped to the edge. As getViewWidth() can be different from 5089 // getWidth() due to the scrollbar, adjusting the point to match 5090 // getViewWidth(). Same applied to the height. 5091 if (x > getViewWidth() - 1) { 5092 x = getViewWidth() - 1; 5093 } 5094 if (y > getViewHeightWithTitle() - 1) { 5095 y = getViewHeightWithTitle() - 1; 5096 } 5097 5098 float fDeltaX = mLastTouchX - x; 5099 float fDeltaY = mLastTouchY - y; 5100 int deltaX = (int) fDeltaX; 5101 int deltaY = (int) fDeltaY; 5102 int contentX = viewToContentX((int) x + mScrollX); 5103 int contentY = viewToContentY((int) y + mScrollY); 5104 5105 switch (action) { 5106 case MotionEvent.ACTION_DOWN: { 5107 mPreventDefault = PREVENT_DEFAULT_NO; 5108 mConfirmMove = false; 5109 if (!mScroller.isFinished()) { 5110 // stop the current scroll animation, but if this is 5111 // the start of a fling, allow it to add to the current 5112 // fling's velocity 5113 mScroller.abortAnimation(); 5114 mTouchMode = TOUCH_DRAG_START_MODE; 5115 mConfirmMove = true; 5116 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5117 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5118 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5119 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5120 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5121 } else { 5122 // commit the short press action for the previous tap 5123 doShortPress(); 5124 mTouchMode = TOUCH_INIT_MODE; 5125 mDeferTouchProcess = (!inFullScreenMode() 5126 && mForwardTouchEvents) ? hitFocusedPlugin( 5127 contentX, contentY) : false; 5128 } 5129 } else { // the normal case 5130 mPreviewZoomOnly = false; 5131 mTouchMode = TOUCH_INIT_MODE; 5132 mDeferTouchProcess = (!inFullScreenMode() 5133 && mForwardTouchEvents) ? hitFocusedPlugin( 5134 contentX, contentY) : false; 5135 mWebViewCore.sendMessage( 5136 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5137 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5138 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5139 (eventTime - mLastTouchUpTime), eventTime); 5140 } 5141 if (mSelectingText) { 5142 mDrawSelectionPointer = false; 5143 mSelectionStarted = nativeStartSelection(contentX, contentY); 5144 if (DebugFlags.WEB_VIEW) { 5145 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5146 } 5147 invalidate(); 5148 } 5149 } 5150 // Trigger the link 5151 if (mTouchMode == TOUCH_INIT_MODE 5152 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5153 mPrivateHandler.sendEmptyMessageDelayed( 5154 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5155 mPrivateHandler.sendEmptyMessageDelayed( 5156 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5157 if (inFullScreenMode() || mDeferTouchProcess) { 5158 mPreventDefault = PREVENT_DEFAULT_YES; 5159 } else if (mForwardTouchEvents) { 5160 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5161 } else { 5162 mPreventDefault = PREVENT_DEFAULT_NO; 5163 } 5164 // pass the touch events from UI thread to WebCore thread 5165 if (shouldForwardTouchEvent()) { 5166 TouchEventData ted = new TouchEventData(); 5167 ted.mAction = action; 5168 ted.mX = contentX; 5169 ted.mY = contentY; 5170 ted.mMetaState = ev.getMetaState(); 5171 ted.mReprocess = mDeferTouchProcess; 5172 if (mDeferTouchProcess) { 5173 // still needs to set them for compute deltaX/Y 5174 mLastTouchX = x; 5175 mLastTouchY = y; 5176 ted.mViewX = x; 5177 ted.mViewY = y; 5178 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5179 break; 5180 } 5181 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5182 if (!inFullScreenMode()) { 5183 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5184 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5185 action, 0), TAP_TIMEOUT); 5186 } 5187 } 5188 } 5189 startTouch(x, y, eventTime); 5190 break; 5191 } 5192 case MotionEvent.ACTION_MOVE: { 5193 boolean firstMove = false; 5194 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5195 >= mTouchSlopSquare) { 5196 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5197 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5198 mConfirmMove = true; 5199 firstMove = true; 5200 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5201 mTouchMode = TOUCH_INIT_MODE; 5202 } 5203 } 5204 // pass the touch events from UI thread to WebCore thread 5205 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5206 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5207 mLastSentTouchTime = eventTime; 5208 TouchEventData ted = new TouchEventData(); 5209 ted.mAction = action; 5210 ted.mX = contentX; 5211 ted.mY = contentY; 5212 ted.mMetaState = ev.getMetaState(); 5213 ted.mReprocess = mDeferTouchProcess; 5214 if (mDeferTouchProcess) { 5215 ted.mViewX = x; 5216 ted.mViewY = y; 5217 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5218 break; 5219 } 5220 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5221 if (firstMove && !inFullScreenMode()) { 5222 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5223 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5224 action, 0), TAP_TIMEOUT); 5225 } 5226 } 5227 if (mTouchMode == TOUCH_DONE_MODE 5228 || mPreventDefault == PREVENT_DEFAULT_YES) { 5229 // no dragging during scroll zoom animation, or when prevent 5230 // default is yes 5231 break; 5232 } 5233 if (mVelocityTracker == null) { 5234 Log.e(LOGTAG, "Got null mVelocityTracker when " 5235 + "mPreventDefault = " + mPreventDefault 5236 + " mDeferTouchProcess = " + mDeferTouchProcess 5237 + " mTouchMode = " + mTouchMode); 5238 } 5239 mVelocityTracker.addMovement(ev); 5240 if (mSelectingText && mSelectionStarted) { 5241 if (DebugFlags.WEB_VIEW) { 5242 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5243 } 5244 nativeExtendSelection(contentX, contentY); 5245 invalidate(); 5246 break; 5247 } 5248 5249 if (mTouchMode != TOUCH_DRAG_MODE) { 5250 5251 if (!mConfirmMove) { 5252 break; 5253 } 5254 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5255 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5256 // track mLastTouchTime as we may need to do fling at 5257 // ACTION_UP 5258 mLastTouchTime = eventTime; 5259 break; 5260 } 5261 5262 // Only lock dragging to one axis if we don't have a scale in progress. 5263 // Scaling implies free-roaming movement. Note we'll only ever get here 5264 // if mAllowPanAndScale is true. 5265 if (mScaleDetector != null && !mScaleDetector.isInProgress()) { 5266 // if it starts nearly horizontal or vertical, enforce it 5267 int ax = Math.abs(deltaX); 5268 int ay = Math.abs(deltaY); 5269 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5270 mSnapScrollMode = SNAP_X; 5271 mSnapPositive = deltaX > 0; 5272 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5273 mSnapScrollMode = SNAP_Y; 5274 mSnapPositive = deltaY > 0; 5275 } 5276 } 5277 5278 mTouchMode = TOUCH_DRAG_MODE; 5279 mLastTouchX = x; 5280 mLastTouchY = y; 5281 fDeltaX = 0.0f; 5282 fDeltaY = 0.0f; 5283 deltaX = 0; 5284 deltaY = 0; 5285 5286 startDrag(); 5287 } 5288 5289 if (mDragTrackerHandler != null) { 5290 mDragTrackerHandler.dragTo(x, y); 5291 } 5292 5293 // do pan 5294 boolean done = false; 5295 boolean keepScrollBarsVisible = false; 5296 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5297 mLastTouchX = x; 5298 mLastTouchY = y; 5299 keepScrollBarsVisible = done = true; 5300 } else { 5301 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5302 int ax = Math.abs(deltaX); 5303 int ay = Math.abs(deltaY); 5304 if (mSnapScrollMode == SNAP_X) { 5305 // radical change means getting out of snap mode 5306 if (ay > MAX_SLOPE_FOR_DIAG * ax 5307 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5308 mSnapScrollMode = SNAP_NONE; 5309 } 5310 // reverse direction means lock in the snap mode 5311 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5312 (mSnapPositive 5313 ? deltaX < -mMinLockSnapReverseDistance 5314 : deltaX > mMinLockSnapReverseDistance)) { 5315 mSnapScrollMode |= SNAP_LOCK; 5316 } 5317 } else { 5318 // radical change means getting out of snap mode 5319 if (ax > MAX_SLOPE_FOR_DIAG * ay 5320 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5321 mSnapScrollMode = SNAP_NONE; 5322 } 5323 // reverse direction means lock in the snap mode 5324 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5325 (mSnapPositive 5326 ? deltaY < -mMinLockSnapReverseDistance 5327 : deltaY > mMinLockSnapReverseDistance)) { 5328 mSnapScrollMode |= SNAP_LOCK; 5329 } 5330 } 5331 } 5332 if (mSnapScrollMode != SNAP_NONE) { 5333 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5334 deltaY = 0; 5335 } else { 5336 deltaX = 0; 5337 } 5338 } 5339 if ((deltaX | deltaY) != 0) { 5340 if (deltaX != 0) { 5341 mLastTouchX = x; 5342 } 5343 if (deltaY != 0) { 5344 mLastTouchY = y; 5345 } 5346 mHeldMotionless = MOTIONLESS_FALSE; 5347 } else { 5348 // keep the scrollbar on the screen even there is no 5349 // scroll 5350 mLastTouchX = x; 5351 mLastTouchY = y; 5352 keepScrollBarsVisible = true; 5353 } 5354 mLastTouchTime = eventTime; 5355 mUserScroll = true; 5356 } 5357 5358 doDrag(deltaX, deltaY); 5359 5360 if (keepScrollBarsVisible) { 5361 if (mHeldMotionless != MOTIONLESS_TRUE) { 5362 mHeldMotionless = MOTIONLESS_TRUE; 5363 invalidate(); 5364 } 5365 // keep the scrollbar on the screen even there is no scroll 5366 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5367 false); 5368 // return false to indicate that we can't pan out of the 5369 // view space 5370 return !done; 5371 } 5372 break; 5373 } 5374 case MotionEvent.ACTION_UP: { 5375 // pass the touch events from UI thread to WebCore thread 5376 if (shouldForwardTouchEvent()) { 5377 TouchEventData ted = new TouchEventData(); 5378 ted.mAction = action; 5379 ted.mX = contentX; 5380 ted.mY = contentY; 5381 ted.mMetaState = ev.getMetaState(); 5382 ted.mReprocess = mDeferTouchProcess; 5383 if (mDeferTouchProcess) { 5384 ted.mViewX = x; 5385 ted.mViewY = y; 5386 } 5387 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5388 } 5389 mLastTouchUpTime = eventTime; 5390 switch (mTouchMode) { 5391 case TOUCH_DOUBLE_TAP_MODE: // double tap 5392 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5393 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5394 if (inFullScreenMode() || mDeferTouchProcess) { 5395 TouchEventData ted = new TouchEventData(); 5396 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5397 ted.mX = contentX; 5398 ted.mY = contentY; 5399 ted.mMetaState = ev.getMetaState(); 5400 ted.mReprocess = mDeferTouchProcess; 5401 if (mDeferTouchProcess) { 5402 ted.mViewX = x; 5403 ted.mViewY = y; 5404 } 5405 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5406 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5407 doDoubleTap(); 5408 mTouchMode = TOUCH_DONE_MODE; 5409 } 5410 break; 5411 case TOUCH_INIT_MODE: // tap 5412 case TOUCH_SHORTPRESS_START_MODE: 5413 case TOUCH_SHORTPRESS_MODE: 5414 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5415 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5416 if (mConfirmMove) { 5417 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5418 " WebCore's response for touch down."); 5419 if (mPreventDefault != PREVENT_DEFAULT_YES 5420 && (computeMaxScrollX() > 0 5421 || computeMaxScrollY() > 0)) { 5422 // UI takes control back, cancel WebCore touch 5423 cancelWebCoreTouchEvent(contentX, contentY, 5424 true); 5425 // we will not rewrite drag code here, but we 5426 // will try fling if it applies. 5427 WebViewCore.reducePriority(); 5428 // to get better performance, pause updating the 5429 // picture 5430 WebViewCore.pauseUpdatePicture(mWebViewCore); 5431 // fall through to TOUCH_DRAG_MODE 5432 } else { 5433 // WebKit may consume the touch event and modify 5434 // DOM. drawContentPicture() will be called with 5435 // animateSroll as true for better performance. 5436 // Force redraw in high-quality. 5437 invalidate(); 5438 break; 5439 } 5440 } else { 5441 if (mSelectingText) { 5442 if (nativeHitSelection(contentX, contentY)) { 5443 copySelection(); 5444 } 5445 selectionDone(); 5446 break; 5447 } 5448 if (mTouchMode == TOUCH_INIT_MODE) { 5449 mPrivateHandler.sendEmptyMessageDelayed( 5450 RELEASE_SINGLE_TAP, ViewConfiguration 5451 .getDoubleTapTimeout()); 5452 } else { 5453 doShortPress(); 5454 } 5455 break; 5456 } 5457 case TOUCH_DRAG_MODE: 5458 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5459 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5460 // if the user waits a while w/o moving before the 5461 // up, we don't want to do a fling 5462 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5463 if (mVelocityTracker == null) { 5464 Log.e(LOGTAG, "Got null mVelocityTracker when " 5465 + "mPreventDefault = " 5466 + mPreventDefault 5467 + " mDeferTouchProcess = " 5468 + mDeferTouchProcess); 5469 } 5470 mVelocityTracker.addMovement(ev); 5471 // set to MOTIONLESS_IGNORE so that it won't keep 5472 // removing and sending message in 5473 // drawCoreAndCursorRing() 5474 mHeldMotionless = MOTIONLESS_IGNORE; 5475 doFling(); 5476 break; 5477 } else { 5478 if (mScroller.springBack(mScrollX, mScrollY, 0, 5479 computeMaxScrollX(), 0, 5480 computeMaxScrollY())) { 5481 invalidate(); 5482 } 5483 } 5484 // redraw in high-quality, as we're done dragging 5485 mHeldMotionless = MOTIONLESS_TRUE; 5486 invalidate(); 5487 // fall through 5488 case TOUCH_DRAG_START_MODE: 5489 // TOUCH_DRAG_START_MODE should not happen for the real 5490 // device as we almost certain will get a MOVE. But this 5491 // is possible on emulator. 5492 mLastVelocity = 0; 5493 WebViewCore.resumePriority(); 5494 WebViewCore.resumeUpdatePicture(mWebViewCore); 5495 break; 5496 } 5497 stopTouch(); 5498 break; 5499 } 5500 case MotionEvent.ACTION_CANCEL: { 5501 if (mTouchMode == TOUCH_DRAG_MODE) { 5502 mScroller.springBack(mScrollX, mScrollY, 0, 5503 computeMaxScrollX(), 0, computeMaxScrollY()); 5504 invalidate(); 5505 } 5506 cancelWebCoreTouchEvent(contentX, contentY, false); 5507 cancelTouch(); 5508 break; 5509 } 5510 } 5511 return true; 5512 } 5513 5514 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5515 if (shouldForwardTouchEvent()) { 5516 if (removeEvents) { 5517 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5518 } 5519 TouchEventData ted = new TouchEventData(); 5520 ted.mX = x; 5521 ted.mY = y; 5522 ted.mAction = MotionEvent.ACTION_CANCEL; 5523 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5524 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5525 } 5526 } 5527 5528 private void startTouch(float x, float y, long eventTime) { 5529 // Remember where the motion event started 5530 mLastTouchX = x; 5531 mLastTouchY = y; 5532 mLastTouchTime = eventTime; 5533 mVelocityTracker = VelocityTracker.obtain(); 5534 mSnapScrollMode = SNAP_NONE; 5535 if (mDragTracker != null) { 5536 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5537 } 5538 } 5539 5540 private void startDrag() { 5541 WebViewCore.reducePriority(); 5542 // to get better performance, pause updating the picture 5543 WebViewCore.pauseUpdatePicture(mWebViewCore); 5544 if (!mDragFromTextInput) { 5545 nativeHideCursor(); 5546 } 5547 WebSettings settings = getSettings(); 5548 if (settings.supportZoom() 5549 && settings.getBuiltInZoomControls() 5550 && !getZoomButtonsController().isVisible() 5551 && mMinZoomScale < mMaxZoomScale 5552 && (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5553 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF)) { 5554 mZoomButtonsController.setVisible(true); 5555 int count = settings.getDoubleTapToastCount(); 5556 if (mInZoomOverview && count > 0) { 5557 settings.setDoubleTapToastCount(--count); 5558 Toast.makeText(mContext, 5559 com.android.internal.R.string.double_tap_toast, 5560 Toast.LENGTH_LONG).show(); 5561 } 5562 } 5563 } 5564 5565 private void doDrag(int deltaX, int deltaY) { 5566 if ((deltaX | deltaY) != 0) { 5567 final int oldX = mScrollX; 5568 final int oldY = mScrollY; 5569 final int rangeX = computeMaxScrollX(); 5570 final int rangeY = computeMaxScrollY(); 5571 overScrollBy(deltaX, deltaY, oldX, oldY, 5572 rangeX, rangeY, 5573 mOverscrollDistance, mOverscrollDistance, true); 5574 5575 if (mEdgeGlowTop != null) { 5576 // Don't show left/right glows if we fit the whole content. 5577 if (rangeX > 0) { 5578 final int pulledToX = oldX + deltaX; 5579 if (pulledToX < 0) { 5580 mEdgeGlowLeft.onPull((float) deltaX / getWidth()); 5581 if (!mEdgeGlowRight.isFinished()) { 5582 mEdgeGlowRight.onRelease(); 5583 } 5584 } else if (pulledToX > rangeX) { 5585 mEdgeGlowRight.onPull((float) deltaX / getWidth()); 5586 if (!mEdgeGlowLeft.isFinished()) { 5587 mEdgeGlowLeft.onRelease(); 5588 } 5589 } 5590 } 5591 5592 if (rangeY > 0 || getOverScrollMode() == OVER_SCROLL_ALWAYS) { 5593 final int pulledToY = oldY + deltaY; 5594 if (pulledToY < 0) { 5595 mEdgeGlowTop.onPull((float) deltaY / getHeight()); 5596 if (!mEdgeGlowBottom.isFinished()) { 5597 mEdgeGlowBottom.onRelease(); 5598 } 5599 } else if (pulledToY > rangeY) { 5600 mEdgeGlowBottom.onPull((float) deltaY / getHeight()); 5601 if (!mEdgeGlowTop.isFinished()) { 5602 mEdgeGlowTop.onRelease(); 5603 } 5604 } 5605 } 5606 } 5607 } 5608 if (!getSettings().getBuiltInZoomControls()) { 5609 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 5610 if (mZoomControls != null && showPlusMinus) { 5611 if (mZoomControls.getVisibility() == View.VISIBLE) { 5612 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5613 } else { 5614 mZoomControls.show(showPlusMinus, false); 5615 } 5616 mPrivateHandler.postDelayed(mZoomControlRunnable, 5617 ZOOM_CONTROLS_TIMEOUT); 5618 } 5619 } 5620 } 5621 5622 private void stopTouch() { 5623 if (mDragTrackerHandler != null) { 5624 mDragTrackerHandler.stopDrag(); 5625 } 5626 // we also use mVelocityTracker == null to tell us that we are 5627 // not "moving around", so we can take the slower/prettier 5628 // mode in the drawing code 5629 if (mVelocityTracker != null) { 5630 mVelocityTracker.recycle(); 5631 mVelocityTracker = null; 5632 } 5633 5634 // Release any pulled glows 5635 if (mEdgeGlowTop != null) { 5636 mEdgeGlowTop.onRelease(); 5637 mEdgeGlowBottom.onRelease(); 5638 mEdgeGlowLeft.onRelease(); 5639 mEdgeGlowRight.onRelease(); 5640 } 5641 } 5642 5643 private void cancelTouch() { 5644 if (mDragTrackerHandler != null) { 5645 mDragTrackerHandler.stopDrag(); 5646 } 5647 // we also use mVelocityTracker == null to tell us that we are 5648 // not "moving around", so we can take the slower/prettier 5649 // mode in the drawing code 5650 if (mVelocityTracker != null) { 5651 mVelocityTracker.recycle(); 5652 mVelocityTracker = null; 5653 } 5654 5655 // Release any pulled glows 5656 if (mEdgeGlowTop != null) { 5657 mEdgeGlowTop.onRelease(); 5658 mEdgeGlowBottom.onRelease(); 5659 mEdgeGlowLeft.onRelease(); 5660 mEdgeGlowRight.onRelease(); 5661 } 5662 5663 if (mTouchMode == TOUCH_DRAG_MODE) { 5664 WebViewCore.resumePriority(); 5665 WebViewCore.resumeUpdatePicture(mWebViewCore); 5666 } 5667 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5668 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5669 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5670 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5671 mHeldMotionless = MOTIONLESS_TRUE; 5672 mTouchMode = TOUCH_DONE_MODE; 5673 nativeHideCursor(); 5674 } 5675 5676 private long mTrackballFirstTime = 0; 5677 private long mTrackballLastTime = 0; 5678 private float mTrackballRemainsX = 0.0f; 5679 private float mTrackballRemainsY = 0.0f; 5680 private int mTrackballXMove = 0; 5681 private int mTrackballYMove = 0; 5682 private boolean mSelectingText = false; 5683 private boolean mSelectionStarted = false; 5684 private boolean mExtendSelection = false; 5685 private boolean mDrawSelectionPointer = false; 5686 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5687 private static final int TRACKBALL_TIMEOUT = 200; 5688 private static final int TRACKBALL_WAIT = 100; 5689 private static final int TRACKBALL_SCALE = 400; 5690 private static final int TRACKBALL_SCROLL_COUNT = 5; 5691 private static final int TRACKBALL_MOVE_COUNT = 10; 5692 private static final int TRACKBALL_MULTIPLIER = 3; 5693 private static final int SELECT_CURSOR_OFFSET = 16; 5694 private int mSelectX = 0; 5695 private int mSelectY = 0; 5696 private boolean mFocusSizeChanged = false; 5697 private boolean mShiftIsPressed = false; 5698 private boolean mTrackballDown = false; 5699 private long mTrackballUpTime = 0; 5700 private long mLastCursorTime = 0; 5701 private Rect mLastCursorBounds; 5702 5703 // Set by default; BrowserActivity clears to interpret trackball data 5704 // directly for movement. Currently, the framework only passes 5705 // arrow key events, not trackball events, from one child to the next 5706 private boolean mMapTrackballToArrowKeys = true; 5707 5708 public void setMapTrackballToArrowKeys(boolean setMap) { 5709 mMapTrackballToArrowKeys = setMap; 5710 } 5711 5712 void resetTrackballTime() { 5713 mTrackballLastTime = 0; 5714 } 5715 5716 @Override 5717 public boolean onTrackballEvent(MotionEvent ev) { 5718 long time = ev.getEventTime(); 5719 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5720 if (ev.getY() > 0) pageDown(true); 5721 if (ev.getY() < 0) pageUp(true); 5722 return true; 5723 } 5724 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5725 if (mSelectingText) { 5726 return true; // discard press if copy in progress 5727 } 5728 mTrackballDown = true; 5729 if (mNativeClass == 0) { 5730 return false; 5731 } 5732 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5733 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5734 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5735 nativeSelectBestAt(mLastCursorBounds); 5736 } 5737 if (DebugFlags.WEB_VIEW) { 5738 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5739 + " time=" + time 5740 + " mLastCursorTime=" + mLastCursorTime); 5741 } 5742 if (isInTouchMode()) requestFocusFromTouch(); 5743 return false; // let common code in onKeyDown at it 5744 } 5745 if (ev.getAction() == MotionEvent.ACTION_UP) { 5746 // LONG_PRESS_CENTER is set in common onKeyDown 5747 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5748 mTrackballDown = false; 5749 mTrackballUpTime = time; 5750 if (mSelectingText) { 5751 if (mExtendSelection) { 5752 copySelection(); 5753 selectionDone(); 5754 } else { 5755 mExtendSelection = true; 5756 nativeSetExtendSelection(); 5757 invalidate(); // draw the i-beam instead of the arrow 5758 } 5759 return true; // discard press if copy in progress 5760 } 5761 if (DebugFlags.WEB_VIEW) { 5762 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5763 + " time=" + time 5764 ); 5765 } 5766 return false; // let common code in onKeyUp at it 5767 } 5768 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5769 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5770 return false; 5771 } 5772 if (mTrackballDown) { 5773 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5774 return true; // discard move if trackball is down 5775 } 5776 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5777 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5778 return true; 5779 } 5780 // TODO: alternatively we can do panning as touch does 5781 switchOutDrawHistory(); 5782 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5783 if (DebugFlags.WEB_VIEW) { 5784 Log.v(LOGTAG, "onTrackballEvent time=" 5785 + time + " last=" + mTrackballLastTime); 5786 } 5787 mTrackballFirstTime = time; 5788 mTrackballXMove = mTrackballYMove = 0; 5789 } 5790 mTrackballLastTime = time; 5791 if (DebugFlags.WEB_VIEW) { 5792 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5793 } 5794 mTrackballRemainsX += ev.getX(); 5795 mTrackballRemainsY += ev.getY(); 5796 doTrackball(time); 5797 return true; 5798 } 5799 5800 void moveSelection(float xRate, float yRate) { 5801 if (mNativeClass == 0) 5802 return; 5803 int width = getViewWidth(); 5804 int height = getViewHeight(); 5805 mSelectX += xRate; 5806 mSelectY += yRate; 5807 int maxX = width + mScrollX; 5808 int maxY = height + mScrollY; 5809 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5810 , mSelectX)); 5811 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5812 , mSelectY)); 5813 if (DebugFlags.WEB_VIEW) { 5814 Log.v(LOGTAG, "moveSelection" 5815 + " mSelectX=" + mSelectX 5816 + " mSelectY=" + mSelectY 5817 + " mScrollX=" + mScrollX 5818 + " mScrollY=" + mScrollY 5819 + " xRate=" + xRate 5820 + " yRate=" + yRate 5821 ); 5822 } 5823 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5824 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5825 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5826 : 0; 5827 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5828 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5829 : 0; 5830 pinScrollBy(scrollX, scrollY, true, 0); 5831 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5832 requestRectangleOnScreen(select); 5833 invalidate(); 5834 } 5835 5836 private int scaleTrackballX(float xRate, int width) { 5837 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5838 int nextXMove = xMove; 5839 if (xMove > 0) { 5840 if (xMove > mTrackballXMove) { 5841 xMove -= mTrackballXMove; 5842 } 5843 } else if (xMove < mTrackballXMove) { 5844 xMove -= mTrackballXMove; 5845 } 5846 mTrackballXMove = nextXMove; 5847 return xMove; 5848 } 5849 5850 private int scaleTrackballY(float yRate, int height) { 5851 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5852 int nextYMove = yMove; 5853 if (yMove > 0) { 5854 if (yMove > mTrackballYMove) { 5855 yMove -= mTrackballYMove; 5856 } 5857 } else if (yMove < mTrackballYMove) { 5858 yMove -= mTrackballYMove; 5859 } 5860 mTrackballYMove = nextYMove; 5861 return yMove; 5862 } 5863 5864 private int keyCodeToSoundsEffect(int keyCode) { 5865 switch(keyCode) { 5866 case KeyEvent.KEYCODE_DPAD_UP: 5867 return SoundEffectConstants.NAVIGATION_UP; 5868 case KeyEvent.KEYCODE_DPAD_RIGHT: 5869 return SoundEffectConstants.NAVIGATION_RIGHT; 5870 case KeyEvent.KEYCODE_DPAD_DOWN: 5871 return SoundEffectConstants.NAVIGATION_DOWN; 5872 case KeyEvent.KEYCODE_DPAD_LEFT: 5873 return SoundEffectConstants.NAVIGATION_LEFT; 5874 } 5875 throw new IllegalArgumentException("keyCode must be one of " + 5876 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5877 "KEYCODE_DPAD_LEFT}."); 5878 } 5879 5880 private void doTrackball(long time) { 5881 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5882 if (elapsed == 0) { 5883 elapsed = TRACKBALL_TIMEOUT; 5884 } 5885 float xRate = mTrackballRemainsX * 1000 / elapsed; 5886 float yRate = mTrackballRemainsY * 1000 / elapsed; 5887 int viewWidth = getViewWidth(); 5888 int viewHeight = getViewHeight(); 5889 if (mSelectingText) { 5890 if (!mDrawSelectionPointer) { 5891 // The last selection was made by touch, disabling drawing the 5892 // selection pointer. Allow the trackball to adjust the 5893 // position of the touch control. 5894 mSelectX = contentToViewX(nativeSelectionX()); 5895 mSelectY = contentToViewY(nativeSelectionY()); 5896 mDrawSelectionPointer = mExtendSelection = true; 5897 nativeSetExtendSelection(); 5898 } 5899 moveSelection(scaleTrackballX(xRate, viewWidth), 5900 scaleTrackballY(yRate, viewHeight)); 5901 mTrackballRemainsX = mTrackballRemainsY = 0; 5902 return; 5903 } 5904 float ax = Math.abs(xRate); 5905 float ay = Math.abs(yRate); 5906 float maxA = Math.max(ax, ay); 5907 if (DebugFlags.WEB_VIEW) { 5908 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5909 + " xRate=" + xRate 5910 + " yRate=" + yRate 5911 + " mTrackballRemainsX=" + mTrackballRemainsX 5912 + " mTrackballRemainsY=" + mTrackballRemainsY); 5913 } 5914 int width = mContentWidth - viewWidth; 5915 int height = mContentHeight - viewHeight; 5916 if (width < 0) width = 0; 5917 if (height < 0) height = 0; 5918 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5919 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5920 maxA = Math.max(ax, ay); 5921 int count = Math.max(0, (int) maxA); 5922 int oldScrollX = mScrollX; 5923 int oldScrollY = mScrollY; 5924 if (count > 0) { 5925 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5926 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5927 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5928 KeyEvent.KEYCODE_DPAD_RIGHT; 5929 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5930 if (DebugFlags.WEB_VIEW) { 5931 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5932 + " count=" + count 5933 + " mTrackballRemainsX=" + mTrackballRemainsX 5934 + " mTrackballRemainsY=" + mTrackballRemainsY); 5935 } 5936 if (mNativeClass != 0 && nativeFocusIsPlugin()) { 5937 for (int i = 0; i < count; i++) { 5938 letPluginHandleNavKey(selectKeyCode, time, true); 5939 } 5940 letPluginHandleNavKey(selectKeyCode, time, false); 5941 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5942 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5943 } 5944 mTrackballRemainsX = mTrackballRemainsY = 0; 5945 } 5946 if (count >= TRACKBALL_SCROLL_COUNT) { 5947 int xMove = scaleTrackballX(xRate, width); 5948 int yMove = scaleTrackballY(yRate, height); 5949 if (DebugFlags.WEB_VIEW) { 5950 Log.v(LOGTAG, "doTrackball pinScrollBy" 5951 + " count=" + count 5952 + " xMove=" + xMove + " yMove=" + yMove 5953 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5954 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5955 ); 5956 } 5957 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5958 xMove = 0; 5959 } 5960 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5961 yMove = 0; 5962 } 5963 if (xMove != 0 || yMove != 0) { 5964 pinScrollBy(xMove, yMove, true, 0); 5965 } 5966 mUserScroll = true; 5967 } 5968 } 5969 5970 private int computeMaxScrollX() { 5971 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 5972 } 5973 5974 private int computeMaxScrollY() { 5975 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 5976 - getViewHeightWithTitle(), 0); 5977 } 5978 5979 public void flingScroll(int vx, int vy) { 5980 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5981 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 5982 invalidate(); 5983 } 5984 5985 private void doFling() { 5986 if (mVelocityTracker == null) { 5987 return; 5988 } 5989 int maxX = computeMaxScrollX(); 5990 int maxY = computeMaxScrollY(); 5991 5992 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5993 int vx = (int) mVelocityTracker.getXVelocity(); 5994 int vy = (int) mVelocityTracker.getYVelocity(); 5995 5996 if (mSnapScrollMode != SNAP_NONE) { 5997 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5998 vy = 0; 5999 } else { 6000 vx = 0; 6001 } 6002 } 6003 if (true /* EMG release: make our fling more like Maps' */) { 6004 // maps cuts their velocity in half 6005 vx = vx * 3 / 4; 6006 vy = vy * 3 / 4; 6007 } 6008 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6009 WebViewCore.resumePriority(); 6010 WebViewCore.resumeUpdatePicture(mWebViewCore); 6011 if (mScroller.springBack(mScrollX, mScrollY, 0, computeMaxScrollX(), 6012 0, computeMaxScrollY())) { 6013 invalidate(); 6014 } 6015 return; 6016 } 6017 float currentVelocity = mScroller.getCurrVelocity(); 6018 if (mLastVelocity > 0 && currentVelocity > 0) { 6019 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6020 - Math.atan2(vy, vx))); 6021 final float circle = (float) (Math.PI) * 2.0f; 6022 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6023 vx += currentVelocity * mLastVelX / mLastVelocity; 6024 vy += currentVelocity * mLastVelY / mLastVelocity; 6025 if (DebugFlags.WEB_VIEW) { 6026 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6027 } 6028 } else if (DebugFlags.WEB_VIEW) { 6029 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6030 } 6031 } else if (DebugFlags.WEB_VIEW) { 6032 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6033 + " current=" + currentVelocity 6034 + " vx=" + vx + " vy=" + vy 6035 + " maxX=" + maxX + " maxY=" + maxY 6036 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 6037 } 6038 6039 // Allow sloppy flings without overscrolling at the edges. 6040 if ((mScrollX == 0 || mScrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6041 vx = 0; 6042 } 6043 if ((mScrollY == 0 || mScrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6044 vy = 0; 6045 } 6046 6047 if (mOverscrollDistance < mOverflingDistance) { 6048 if (mScrollX == -mOverscrollDistance || mScrollX == maxX + mOverscrollDistance) { 6049 vx = 0; 6050 } 6051 if (mScrollY == -mOverscrollDistance || mScrollY == maxY + mOverscrollDistance) { 6052 vy = 0; 6053 } 6054 } 6055 6056 mLastVelX = vx; 6057 mLastVelY = vy; 6058 mLastVelocity = (float) Math.hypot(vx, vy); 6059 6060 // no horizontal overscroll if the content just fits 6061 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY, 6062 maxX == 0 ? 0 : mOverflingDistance, mOverflingDistance); 6063 // Duration is calculated based on velocity. With range boundaries and overscroll 6064 // we may not know how long the final animation will take. (Hence the deprecation 6065 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6066 // resumes during this effect we will take a performance hit. See computeScroll; 6067 // we resume webcore there when the animation is finished. 6068 final int time = mScroller.getDuration(); 6069 awakenScrollBars(time); 6070 invalidate(); 6071 } 6072 6073 private boolean zoomWithPreview(float scale, boolean updateTextWrapScale) { 6074 float oldScale = mActualScale; 6075 mInitialScrollX = mScrollX; 6076 mInitialScrollY = mScrollY; 6077 6078 // snap to DEFAULT_SCALE if it is close 6079 if (Math.abs(scale - mDefaultScale) < MINIMUM_SCALE_INCREMENT) { 6080 scale = mDefaultScale; 6081 } 6082 6083 setNewZoomScale(scale, updateTextWrapScale, false); 6084 6085 if (oldScale != mActualScale) { 6086 // use mZoomPickerScale to see zoom preview first 6087 mZoomStart = SystemClock.uptimeMillis(); 6088 mInvInitialZoomScale = 1.0f / oldScale; 6089 mInvFinalZoomScale = 1.0f / mActualScale; 6090 mZoomScale = mActualScale; 6091 WebViewCore.pauseUpdatePicture(mWebViewCore); 6092 invalidate(); 6093 return true; 6094 } else { 6095 return false; 6096 } 6097 } 6098 6099 /** 6100 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6101 * in charge of installing this view to the view hierarchy. This view will 6102 * become visible when the user starts scrolling via touch and fade away if 6103 * the user does not interact with it. 6104 * <p/> 6105 * API version 3 introduces a built-in zoom mechanism that is shown 6106 * automatically by the MapView. This is the preferred approach for 6107 * showing the zoom UI. 6108 * 6109 * @deprecated The built-in zoom mechanism is preferred, see 6110 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6111 */ 6112 @Deprecated 6113 public View getZoomControls() { 6114 if (!getSettings().supportZoom()) { 6115 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6116 return null; 6117 } 6118 if (mZoomControls == null) { 6119 mZoomControls = createZoomControls(); 6120 6121 /* 6122 * need to be set to VISIBLE first so that getMeasuredHeight() in 6123 * {@link #onSizeChanged()} can return the measured value for proper 6124 * layout. 6125 */ 6126 mZoomControls.setVisibility(View.VISIBLE); 6127 mZoomControlRunnable = new Runnable() { 6128 public void run() { 6129 6130 /* Don't dismiss the controls if the user has 6131 * focus on them. Wait and check again later. 6132 */ 6133 if (!mZoomControls.hasFocus()) { 6134 mZoomControls.hide(); 6135 } else { 6136 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6137 mPrivateHandler.postDelayed(mZoomControlRunnable, 6138 ZOOM_CONTROLS_TIMEOUT); 6139 } 6140 } 6141 }; 6142 } 6143 return mZoomControls; 6144 } 6145 6146 private ExtendedZoomControls createZoomControls() { 6147 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 6148 , null); 6149 zoomControls.setOnZoomInClickListener(new OnClickListener() { 6150 public void onClick(View v) { 6151 // reset time out 6152 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6153 mPrivateHandler.postDelayed(mZoomControlRunnable, 6154 ZOOM_CONTROLS_TIMEOUT); 6155 zoomIn(); 6156 } 6157 }); 6158 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 6159 public void onClick(View v) { 6160 // reset time out 6161 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6162 mPrivateHandler.postDelayed(mZoomControlRunnable, 6163 ZOOM_CONTROLS_TIMEOUT); 6164 zoomOut(); 6165 } 6166 }); 6167 return zoomControls; 6168 } 6169 6170 /** 6171 * Gets the {@link ZoomButtonsController} which can be used to add 6172 * additional buttons to the zoom controls window. 6173 * 6174 * @return The instance of {@link ZoomButtonsController} used by this class, 6175 * or null if it is unavailable. 6176 * @hide 6177 */ 6178 public ZoomButtonsController getZoomButtonsController() { 6179 if (mZoomButtonsController == null) { 6180 mZoomButtonsController = new ZoomButtonsController(this); 6181 mZoomButtonsController.setOnZoomListener(mZoomListener); 6182 // ZoomButtonsController positions the buttons at the bottom, but in 6183 // the middle. Change their layout parameters so they appear on the 6184 // right. 6185 View controls = mZoomButtonsController.getZoomControls(); 6186 ViewGroup.LayoutParams params = controls.getLayoutParams(); 6187 if (params instanceof FrameLayout.LayoutParams) { 6188 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) params; 6189 frameParams.gravity = Gravity.RIGHT; 6190 } 6191 } 6192 return mZoomButtonsController; 6193 } 6194 6195 /** 6196 * Perform zoom in in the webview 6197 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6198 */ 6199 public boolean zoomIn() { 6200 // TODO: alternatively we can disallow this during draw history mode 6201 switchOutDrawHistory(); 6202 mInZoomOverview = false; 6203 // Center zooming to the center of the screen. 6204 mZoomCenterX = getViewWidth() * .5f; 6205 mZoomCenterY = getViewHeight() * .5f; 6206 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 6207 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 6208 return zoomWithPreview(mActualScale * 1.25f, true); 6209 } 6210 6211 /** 6212 * Perform zoom out in the webview 6213 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6214 */ 6215 public boolean zoomOut() { 6216 // TODO: alternatively we can disallow this during draw history mode 6217 switchOutDrawHistory(); 6218 // Center zooming to the center of the screen. 6219 mZoomCenterX = getViewWidth() * .5f; 6220 mZoomCenterY = getViewHeight() * .5f; 6221 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 6222 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 6223 return zoomWithPreview(mActualScale * 0.8f, true); 6224 } 6225 6226 private void updateSelection() { 6227 if (mNativeClass == 0) { 6228 return; 6229 } 6230 // mLastTouchX and mLastTouchY are the point in the current viewport 6231 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6232 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6233 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6234 contentX + mNavSlop, contentY + mNavSlop); 6235 nativeSelectBestAt(rect); 6236 } 6237 6238 /** 6239 * Scroll the focused text field/area to match the WebTextView 6240 * @param xPercent New x position of the WebTextView from 0 to 1. 6241 * @param y New y position of the WebTextView in view coordinates 6242 */ 6243 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 6244 if (!inEditingMode() || mWebViewCore == null) { 6245 return; 6246 } 6247 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 6248 // Since this position is relative to the top of the text input 6249 // field, we do not need to take the title bar's height into 6250 // consideration. 6251 viewToContentDimension(y), 6252 new Float(xPercent)); 6253 } 6254 6255 /** 6256 * Set our starting point and time for a drag from the WebTextView. 6257 */ 6258 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6259 if (!inEditingMode()) { 6260 return; 6261 } 6262 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 6263 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 6264 mLastTouchTime = eventTime; 6265 if (!mScroller.isFinished()) { 6266 abortAnimation(); 6267 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6268 } 6269 mSnapScrollMode = SNAP_NONE; 6270 mVelocityTracker = VelocityTracker.obtain(); 6271 mTouchMode = TOUCH_DRAG_START_MODE; 6272 } 6273 6274 /** 6275 * Given a motion event from the WebTextView, set its location to our 6276 * coordinates, and handle the event. 6277 */ 6278 /*package*/ boolean textFieldDrag(MotionEvent event) { 6279 if (!inEditingMode()) { 6280 return false; 6281 } 6282 mDragFromTextInput = true; 6283 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6284 (float) (mWebTextView.getTop() - mScrollY)); 6285 boolean result = onTouchEvent(event); 6286 mDragFromTextInput = false; 6287 return result; 6288 } 6289 6290 /** 6291 * Due a touch up from a WebTextView. This will be handled by webkit to 6292 * change the selection. 6293 * @param event MotionEvent in the WebTextView's coordinates. 6294 */ 6295 /*package*/ void touchUpOnTextField(MotionEvent event) { 6296 if (!inEditingMode()) { 6297 return; 6298 } 6299 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6300 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6301 nativeMotionUp(x, y, mNavSlop); 6302 } 6303 6304 /** 6305 * Called when pressing the center key or trackball on a textfield. 6306 */ 6307 /*package*/ void centerKeyPressOnTextField() { 6308 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6309 nativeCursorNodePointer()); 6310 } 6311 6312 private void doShortPress() { 6313 if (mNativeClass == 0) { 6314 return; 6315 } 6316 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6317 return; 6318 } 6319 mTouchMode = TOUCH_DONE_MODE; 6320 switchOutDrawHistory(); 6321 // mLastTouchX and mLastTouchY are the point in the current viewport 6322 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6323 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6324 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6325 WebViewCore.MotionUpData motionUpData = new WebViewCore 6326 .MotionUpData(); 6327 motionUpData.mFrame = nativeCacheHitFramePointer(); 6328 motionUpData.mNode = nativeCacheHitNodePointer(); 6329 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6330 motionUpData.mX = contentX; 6331 motionUpData.mY = contentY; 6332 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6333 motionUpData); 6334 } else { 6335 doMotionUp(contentX, contentY); 6336 } 6337 } 6338 6339 private void doMotionUp(int contentX, int contentY) { 6340 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 6341 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6342 } 6343 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6344 playSoundEffect(SoundEffectConstants.CLICK); 6345 } 6346 } 6347 6348 /* 6349 * Return true if the view (Plugin) is fully visible and maximized inside 6350 * the WebView. 6351 */ 6352 private boolean isPluginFitOnScreen(ViewManager.ChildView view) { 6353 int viewWidth = getViewWidth(); 6354 int viewHeight = getViewHeightWithTitle(); 6355 float scale = Math.min((float) viewWidth / view.width, 6356 (float) viewHeight / view.height); 6357 if (scale < mMinZoomScale) { 6358 scale = mMinZoomScale; 6359 } else if (scale > mMaxZoomScale) { 6360 scale = mMaxZoomScale; 6361 } 6362 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 6363 if (contentToViewX(view.x) >= mScrollX 6364 && contentToViewX(view.x + view.width) <= mScrollX 6365 + viewWidth 6366 && contentToViewY(view.y) >= mScrollY 6367 && contentToViewY(view.y + view.height) <= mScrollY 6368 + viewHeight) { 6369 return true; 6370 } 6371 } 6372 return false; 6373 } 6374 6375 /* 6376 * Maximize and center the rectangle, specified in the document coordinate 6377 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6378 * animated scroll to center it. If the zoom needs to be changed, find the 6379 * zoom center and do a smooth zoom transition. 6380 */ 6381 private void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 6382 int viewWidth = getViewWidth(); 6383 int viewHeight = getViewHeightWithTitle(); 6384 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 6385 / docHeight); 6386 if (scale < mMinZoomScale) { 6387 scale = mMinZoomScale; 6388 } else if (scale > mMaxZoomScale) { 6389 scale = mMaxZoomScale; 6390 } 6391 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 6392 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 6393 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 6394 true, 0); 6395 } else { 6396 float oldScreenX = docX * mActualScale - mScrollX; 6397 float rectViewX = docX * scale; 6398 float rectViewWidth = docWidth * scale; 6399 float newMaxWidth = mContentWidth * scale; 6400 float newScreenX = (viewWidth - rectViewWidth) / 2; 6401 // pin the newX to the WebView 6402 if (newScreenX > rectViewX) { 6403 newScreenX = rectViewX; 6404 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6405 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6406 } 6407 mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale) 6408 / (scale - mActualScale); 6409 float oldScreenY = docY * mActualScale + getTitleHeight() 6410 - mScrollY; 6411 float rectViewY = docY * scale + getTitleHeight(); 6412 float rectViewHeight = docHeight * scale; 6413 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6414 float newScreenY = (viewHeight - rectViewHeight) / 2; 6415 // pin the newY to the WebView 6416 if (newScreenY > rectViewY) { 6417 newScreenY = rectViewY; 6418 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6419 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6420 } 6421 mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale) 6422 / (scale - mActualScale); 6423 zoomWithPreview(scale, false); 6424 } 6425 } 6426 6427 void dismissZoomControl() { 6428 if (mWebViewCore == null) { 6429 // maybe called after WebView's destroy(). As we can't get settings, 6430 // just hide zoom control for both styles. 6431 if (mZoomButtonsController != null) { 6432 mZoomButtonsController.setVisible(false); 6433 } 6434 if (mZoomControls != null) { 6435 mZoomControls.hide(); 6436 } 6437 return; 6438 } 6439 WebSettings settings = getSettings(); 6440 if (settings.getBuiltInZoomControls()) { 6441 if (mZoomButtonsController != null) { 6442 mZoomButtonsController.setVisible(false); 6443 } 6444 } else { 6445 if (mZoomControlRunnable != null) { 6446 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6447 } 6448 if (mZoomControls != null) { 6449 mZoomControls.hide(); 6450 } 6451 } 6452 } 6453 6454 // Rule for double tap: 6455 // 1. if the current scale is not same as the text wrap scale and layout 6456 // algorithm is NARROW_COLUMNS, fit to column; 6457 // 2. if the current state is not overview mode, change to overview mode; 6458 // 3. if the current state is overview mode, change to default scale. 6459 private void doDoubleTap() { 6460 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 6461 return; 6462 } 6463 mZoomCenterX = mLastTouchX; 6464 mZoomCenterY = mLastTouchY; 6465 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 6466 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 6467 WebSettings settings = getSettings(); 6468 settings.setDoubleTapToastCount(0); 6469 // remove the zoom control after double tap 6470 dismissZoomControl(); 6471 ViewManager.ChildView plugin = mViewManager.hitTest(mAnchorX, mAnchorY); 6472 if (plugin != null) { 6473 if (isPluginFitOnScreen(plugin)) { 6474 mInZoomOverview = true; 6475 // Force the titlebar fully reveal in overview mode 6476 if (mScrollY < getTitleHeight()) mScrollY = 0; 6477 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth, 6478 true); 6479 } else { 6480 mInZoomOverview = false; 6481 centerFitRect(plugin.x, plugin.y, plugin.width, plugin.height); 6482 } 6483 return; 6484 } 6485 boolean zoomToDefault = false; 6486 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 6487 && (Math.abs(mActualScale - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT)) { 6488 setNewZoomScale(mActualScale, true, true); 6489 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 6490 if (Math.abs(mActualScale - overviewScale) < MINIMUM_SCALE_INCREMENT) { 6491 mInZoomOverview = true; 6492 } 6493 } else if (!mInZoomOverview) { 6494 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 6495 if (Math.abs(mActualScale - newScale) >= MINIMUM_SCALE_INCREMENT) { 6496 mInZoomOverview = true; 6497 // Force the titlebar fully reveal in overview mode 6498 if (mScrollY < getTitleHeight()) mScrollY = 0; 6499 zoomWithPreview(newScale, true); 6500 } else if (Math.abs(mActualScale - mDefaultScale) >= MINIMUM_SCALE_INCREMENT) { 6501 zoomToDefault = true; 6502 } 6503 } else { 6504 zoomToDefault = true; 6505 } 6506 if (zoomToDefault) { 6507 mInZoomOverview = false; 6508 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 6509 if (left != NO_LEFTEDGE) { 6510 // add a 5pt padding to the left edge. 6511 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 6512 - mScrollX; 6513 // Re-calculate the zoom center so that the new scroll x will be 6514 // on the left edge. 6515 if (viewLeft > 0) { 6516 mZoomCenterX = viewLeft * mDefaultScale 6517 / (mDefaultScale - mActualScale); 6518 } else { 6519 scrollBy(viewLeft, 0); 6520 mZoomCenterX = 0; 6521 } 6522 } 6523 zoomWithPreview(mDefaultScale, true); 6524 } 6525 } 6526 6527 // Called by JNI to handle a touch on a node representing an email address, 6528 // address, or phone number 6529 private void overrideLoading(String url) { 6530 mCallbackProxy.uiOverrideUrlLoading(url); 6531 } 6532 6533 @Override 6534 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6535 boolean result = false; 6536 if (inEditingMode()) { 6537 result = mWebTextView.requestFocus(direction, 6538 previouslyFocusedRect); 6539 } else { 6540 result = super.requestFocus(direction, previouslyFocusedRect); 6541 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6542 // For cases such as GMail, where we gain focus from a direction, 6543 // we want to move to the first available link. 6544 // FIXME: If there are no visible links, we may not want to 6545 int fakeKeyDirection = 0; 6546 switch(direction) { 6547 case View.FOCUS_UP: 6548 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6549 break; 6550 case View.FOCUS_DOWN: 6551 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6552 break; 6553 case View.FOCUS_LEFT: 6554 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6555 break; 6556 case View.FOCUS_RIGHT: 6557 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6558 break; 6559 default: 6560 return result; 6561 } 6562 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6563 navHandledKey(fakeKeyDirection, 1, true, 0); 6564 } 6565 } 6566 } 6567 return result; 6568 } 6569 6570 @Override 6571 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6572 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6573 6574 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6575 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6576 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6577 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6578 6579 int measuredHeight = heightSize; 6580 int measuredWidth = widthSize; 6581 6582 // Grab the content size from WebViewCore. 6583 int contentHeight = contentToViewDimension(mContentHeight); 6584 int contentWidth = contentToViewDimension(mContentWidth); 6585 6586// Log.d(LOGTAG, "------- measure " + heightMode); 6587 6588 if (heightMode != MeasureSpec.EXACTLY) { 6589 mHeightCanMeasure = true; 6590 measuredHeight = contentHeight; 6591 if (heightMode == MeasureSpec.AT_MOST) { 6592 // If we are larger than the AT_MOST height, then our height can 6593 // no longer be measured and we should scroll internally. 6594 if (measuredHeight > heightSize) { 6595 measuredHeight = heightSize; 6596 mHeightCanMeasure = false; 6597 } 6598 } 6599 } else { 6600 mHeightCanMeasure = false; 6601 } 6602 if (mNativeClass != 0) { 6603 nativeSetHeightCanMeasure(mHeightCanMeasure); 6604 } 6605 // For the width, always use the given size unless unspecified. 6606 if (widthMode == MeasureSpec.UNSPECIFIED) { 6607 mWidthCanMeasure = true; 6608 measuredWidth = contentWidth; 6609 } else { 6610 mWidthCanMeasure = false; 6611 } 6612 6613 synchronized (this) { 6614 setMeasuredDimension(measuredWidth, measuredHeight); 6615 } 6616 } 6617 6618 @Override 6619 public boolean requestChildRectangleOnScreen(View child, 6620 Rect rect, 6621 boolean immediate) { 6622 rect.offset(child.getLeft() - child.getScrollX(), 6623 child.getTop() - child.getScrollY()); 6624 6625 Rect content = new Rect(viewToContentX(mScrollX), 6626 viewToContentY(mScrollY), 6627 viewToContentX(mScrollX + getWidth() 6628 - getVerticalScrollbarWidth()), 6629 viewToContentY(mScrollY + getViewHeightWithTitle())); 6630 content = nativeSubtractLayers(content); 6631 int screenTop = contentToViewY(content.top); 6632 int screenBottom = contentToViewY(content.bottom); 6633 int height = screenBottom - screenTop; 6634 int scrollYDelta = 0; 6635 6636 if (rect.bottom > screenBottom) { 6637 int oneThirdOfScreenHeight = height / 3; 6638 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6639 // If the rectangle is too tall to fit in the bottom two thirds 6640 // of the screen, place it at the top. 6641 scrollYDelta = rect.top - screenTop; 6642 } else { 6643 // If the rectangle will still fit on screen, we want its 6644 // top to be in the top third of the screen. 6645 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6646 } 6647 } else if (rect.top < screenTop) { 6648 scrollYDelta = rect.top - screenTop; 6649 } 6650 6651 int screenLeft = contentToViewX(content.left); 6652 int screenRight = contentToViewX(content.right); 6653 int width = screenRight - screenLeft; 6654 int scrollXDelta = 0; 6655 6656 if (rect.right > screenRight && rect.left > screenLeft) { 6657 if (rect.width() > width) { 6658 scrollXDelta += (rect.left - screenLeft); 6659 } else { 6660 scrollXDelta += (rect.right - screenRight); 6661 } 6662 } else if (rect.left < screenLeft) { 6663 scrollXDelta -= (screenLeft - rect.left); 6664 } 6665 6666 if ((scrollYDelta | scrollXDelta) != 0) { 6667 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6668 } 6669 6670 return false; 6671 } 6672 6673 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6674 String replace, int newStart, int newEnd) { 6675 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6676 arg.mReplace = replace; 6677 arg.mNewStart = newStart; 6678 arg.mNewEnd = newEnd; 6679 mTextGeneration++; 6680 arg.mTextGeneration = mTextGeneration; 6681 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6682 } 6683 6684 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6685 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6686 arg.mEvent = event; 6687 arg.mCurrentText = currentText; 6688 // Increase our text generation number, and pass it to webcore thread 6689 mTextGeneration++; 6690 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6691 // WebKit's document state is not saved until about to leave the page. 6692 // To make sure the host application, like Browser, has the up to date 6693 // document state when it goes to background, we force to save the 6694 // document state. 6695 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6696 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6697 cursorData(), 1000); 6698 } 6699 6700 /* package */ synchronized WebViewCore getWebViewCore() { 6701 return mWebViewCore; 6702 } 6703 6704 //------------------------------------------------------------------------- 6705 // Methods can be called from a separate thread, like WebViewCore 6706 // If it needs to call the View system, it has to send message. 6707 //------------------------------------------------------------------------- 6708 6709 /** 6710 * General handler to receive message coming from webkit thread 6711 */ 6712 class PrivateHandler extends Handler { 6713 @Override 6714 public void handleMessage(Message msg) { 6715 // exclude INVAL_RECT_MSG_ID since it is frequently output 6716 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6717 if (msg.what >= FIRST_PRIVATE_MSG_ID 6718 && msg.what <= LAST_PRIVATE_MSG_ID) { 6719 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6720 - FIRST_PRIVATE_MSG_ID]); 6721 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6722 && msg.what <= LAST_PACKAGE_MSG_ID) { 6723 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6724 - FIRST_PACKAGE_MSG_ID]); 6725 } else { 6726 Log.v(LOGTAG, Integer.toString(msg.what)); 6727 } 6728 } 6729 if (mWebViewCore == null) { 6730 // after WebView's destroy() is called, skip handling messages. 6731 return; 6732 } 6733 switch (msg.what) { 6734 case REMEMBER_PASSWORD: { 6735 mDatabase.setUsernamePassword( 6736 msg.getData().getString("host"), 6737 msg.getData().getString("username"), 6738 msg.getData().getString("password")); 6739 ((Message) msg.obj).sendToTarget(); 6740 break; 6741 } 6742 case NEVER_REMEMBER_PASSWORD: { 6743 mDatabase.setUsernamePassword( 6744 msg.getData().getString("host"), null, null); 6745 ((Message) msg.obj).sendToTarget(); 6746 break; 6747 } 6748 case PREVENT_DEFAULT_TIMEOUT: { 6749 // if timeout happens, cancel it so that it won't block UI 6750 // to continue handling touch events 6751 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6752 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6753 || (msg.arg1 == MotionEvent.ACTION_MOVE 6754 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6755 cancelWebCoreTouchEvent( 6756 viewToContentX((int) mLastTouchX + mScrollX), 6757 viewToContentY((int) mLastTouchY + mScrollY), 6758 true); 6759 } 6760 break; 6761 } 6762 case SWITCH_TO_SHORTPRESS: { 6763 if (mTouchMode == TOUCH_INIT_MODE) { 6764 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6765 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6766 updateSelection(); 6767 } else { 6768 // set to TOUCH_SHORTPRESS_MODE so that it won't 6769 // trigger double tap any more 6770 mTouchMode = TOUCH_SHORTPRESS_MODE; 6771 } 6772 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6773 mTouchMode = TOUCH_DONE_MODE; 6774 } 6775 break; 6776 } 6777 case SWITCH_TO_LONGPRESS: { 6778 if (inFullScreenMode() || mDeferTouchProcess) { 6779 TouchEventData ted = new TouchEventData(); 6780 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6781 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6782 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6783 // metaState for long press is tricky. Should it be the 6784 // state when the press started or when the press was 6785 // released? Or some intermediary key state? For 6786 // simplicity for now, we don't set it. 6787 ted.mMetaState = 0; 6788 ted.mReprocess = mDeferTouchProcess; 6789 if (mDeferTouchProcess) { 6790 ted.mViewX = mLastTouchX; 6791 ted.mViewY = mLastTouchY; 6792 } 6793 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6794 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6795 mTouchMode = TOUCH_DONE_MODE; 6796 performLongClick(); 6797 rebuildWebTextView(); 6798 } 6799 break; 6800 } 6801 case RELEASE_SINGLE_TAP: { 6802 doShortPress(); 6803 break; 6804 } 6805 case SCROLL_BY_MSG_ID: 6806 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6807 break; 6808 case SYNC_SCROLL_TO_MSG_ID: 6809 if (mUserScroll) { 6810 // if user has scrolled explicitly, don't sync the 6811 // scroll position any more 6812 mUserScroll = false; 6813 break; 6814 } 6815 // fall through 6816 case SCROLL_TO_MSG_ID: 6817 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6818 // if we can't scroll to the exact position due to pin, 6819 // send a message to WebCore to re-scroll when we get a 6820 // new picture 6821 mUserScroll = false; 6822 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6823 msg.arg1, msg.arg2); 6824 } 6825 break; 6826 case SPAWN_SCROLL_TO_MSG_ID: 6827 spawnContentScrollTo(msg.arg1, msg.arg2); 6828 break; 6829 case UPDATE_ZOOM_RANGE: { 6830 WebViewCore.RestoreState restoreState 6831 = (WebViewCore.RestoreState) msg.obj; 6832 // mScrollX contains the new minPrefWidth 6833 updateZoomRange(restoreState, getViewWidth(), 6834 restoreState.mScrollX, false); 6835 break; 6836 } 6837 case NEW_PICTURE_MSG_ID: { 6838 // If we've previously delayed deleting a root 6839 // layer, do it now. 6840 if (mDelayedDeleteRootLayer) { 6841 mDelayedDeleteRootLayer = false; 6842 nativeSetRootLayer(0); 6843 } 6844 WebSettings settings = mWebViewCore.getSettings(); 6845 // called for new content 6846 final int viewWidth = getViewWidth(); 6847 final WebViewCore.DrawData draw = 6848 (WebViewCore.DrawData) msg.obj; 6849 final Point viewSize = draw.mViewPoint; 6850 boolean useWideViewport = settings.getUseWideViewPort(); 6851 WebViewCore.RestoreState restoreState = draw.mRestoreState; 6852 boolean hasRestoreState = restoreState != null; 6853 if (hasRestoreState) { 6854 updateZoomRange(restoreState, viewSize.x, 6855 draw.mMinPrefWidth, true); 6856 if (!mDrawHistory) { 6857 mInZoomOverview = false; 6858 6859 if (mInitialScaleInPercent > 0) { 6860 setNewZoomScale(mInitialScaleInPercent / 100.0f, 6861 mInitialScaleInPercent != mTextWrapScale * 100, 6862 false); 6863 } else if (restoreState.mViewScale > 0) { 6864 mTextWrapScale = restoreState.mTextWrapScale; 6865 setNewZoomScale(restoreState.mViewScale, false, 6866 false); 6867 } else { 6868 mInZoomOverview = useWideViewport 6869 && settings.getLoadWithOverviewMode(); 6870 float scale; 6871 if (mInZoomOverview) { 6872 scale = (float) viewWidth 6873 / DEFAULT_VIEWPORT_WIDTH; 6874 } else { 6875 scale = restoreState.mTextWrapScale; 6876 } 6877 setNewZoomScale(scale, Math.abs(scale 6878 - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT, 6879 false); 6880 } 6881 setContentScrollTo(restoreState.mScrollX, 6882 restoreState.mScrollY); 6883 // As we are on a new page, remove the WebTextView. This 6884 // is necessary for page loads driven by webkit, and in 6885 // particular when the user was on a password field, so 6886 // the WebTextView was visible. 6887 clearTextEntry(false); 6888 // update the zoom buttons as the scale can be changed 6889 if (getSettings().getBuiltInZoomControls()) { 6890 updateZoomButtonsEnabled(); 6891 } 6892 } 6893 } 6894 // We update the layout (i.e. request a layout from the 6895 // view system) if the last view size that we sent to 6896 // WebCore matches the view size of the picture we just 6897 // received in the fixed dimension. 6898 final boolean updateLayout = viewSize.x == mLastWidthSent 6899 && viewSize.y == mLastHeightSent; 6900 recordNewContentSize(draw.mWidthHeight.x, 6901 draw.mWidthHeight.y 6902 + (mFindIsUp ? mFindHeight : 0), updateLayout); 6903 if (DebugFlags.WEB_VIEW) { 6904 Rect b = draw.mInvalRegion.getBounds(); 6905 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6906 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6907 } 6908 invalidateContentRect(draw.mInvalRegion.getBounds()); 6909 if (mPictureListener != null) { 6910 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6911 } 6912 if (useWideViewport) { 6913 // limit mZoomOverviewWidth upper bound to 6914 // sMaxViewportWidth so that if the page doesn't behave 6915 // well, the WebView won't go insane. limit the lower 6916 // bound to match the default scale for mobile sites. 6917 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 6918 .max((int) (viewWidth / mDefaultScale), Math 6919 .max(draw.mMinPrefWidth, 6920 draw.mViewPoint.x))); 6921 } 6922 if (!mMinZoomScaleFixed) { 6923 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 6924 } 6925 if (!mDrawHistory && mInZoomOverview) { 6926 // fit the content width to the current view. Ignore 6927 // the rounding error case. 6928 if (Math.abs((viewWidth * mInvActualScale) 6929 - mZoomOverviewWidth) > 1) { 6930 setNewZoomScale((float) viewWidth 6931 / mZoomOverviewWidth, Math.abs(mActualScale 6932 - mTextWrapScale) < MINIMUM_SCALE_INCREMENT, 6933 false); 6934 } 6935 } 6936 if (draw.mFocusSizeChanged && inEditingMode()) { 6937 mFocusSizeChanged = true; 6938 } 6939 if (hasRestoreState) { 6940 mViewManager.postReadyToDrawAll(); 6941 } 6942 break; 6943 } 6944 case WEBCORE_INITIALIZED_MSG_ID: 6945 // nativeCreate sets mNativeClass to a non-zero value 6946 nativeCreate(msg.arg1); 6947 break; 6948 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6949 // Make sure that the textfield is currently focused 6950 // and representing the same node as the pointer. 6951 if (inEditingMode() && 6952 mWebTextView.isSameTextField(msg.arg1)) { 6953 if (msg.getData().getBoolean("password")) { 6954 Spannable text = (Spannable) mWebTextView.getText(); 6955 int start = Selection.getSelectionStart(text); 6956 int end = Selection.getSelectionEnd(text); 6957 mWebTextView.setInPassword(true); 6958 // Restore the selection, which may have been 6959 // ruined by setInPassword. 6960 Spannable pword = 6961 (Spannable) mWebTextView.getText(); 6962 Selection.setSelection(pword, start, end); 6963 // If the text entry has created more events, ignore 6964 // this one. 6965 } else if (msg.arg2 == mTextGeneration) { 6966 mWebTextView.setTextAndKeepSelection( 6967 (String) msg.obj); 6968 } 6969 } 6970 break; 6971 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6972 displaySoftKeyboard(true); 6973 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6974 (WebViewCore.TextSelectionData) msg.obj); 6975 break; 6976 case UPDATE_TEXT_SELECTION_MSG_ID: 6977 // If no textfield was in focus, and the user touched one, 6978 // causing it to send this message, then WebTextView has not 6979 // been set up yet. Rebuild it so it can set its selection. 6980 rebuildWebTextView(); 6981 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6982 (WebViewCore.TextSelectionData) msg.obj); 6983 break; 6984 case RETURN_LABEL: 6985 if (inEditingMode() 6986 && mWebTextView.isSameTextField(msg.arg1)) { 6987 mWebTextView.setHint((String) msg.obj); 6988 InputMethodManager imm 6989 = InputMethodManager.peekInstance(); 6990 // The hint is propagated to the IME in 6991 // onCreateInputConnection. If the IME is already 6992 // active, restart it so that its hint text is updated. 6993 if (imm != null && imm.isActive(mWebTextView)) { 6994 imm.restartInput(mWebTextView); 6995 } 6996 } 6997 break; 6998 case MOVE_OUT_OF_PLUGIN: 6999 navHandledKey(msg.arg1, 1, false, 0); 7000 break; 7001 case UPDATE_TEXT_ENTRY_MSG_ID: 7002 // this is sent after finishing resize in WebViewCore. Make 7003 // sure the text edit box is still on the screen. 7004 selectionDone(); 7005 if (inEditingMode() && nativeCursorIsTextInput()) { 7006 mWebTextView.bringIntoView(); 7007 rebuildWebTextView(); 7008 } 7009 break; 7010 case CLEAR_TEXT_ENTRY: 7011 clearTextEntry(false); 7012 break; 7013 case INVAL_RECT_MSG_ID: { 7014 Rect r = (Rect)msg.obj; 7015 if (r == null) { 7016 invalidate(); 7017 } else { 7018 // we need to scale r from content into view coords, 7019 // which viewInvalidate() does for us 7020 viewInvalidate(r.left, r.top, r.right, r.bottom); 7021 } 7022 break; 7023 } 7024 case IMMEDIATE_REPAINT_MSG_ID: { 7025 invalidate(); 7026 break; 7027 } 7028 case SET_ROOT_LAYER_MSG_ID: { 7029 if (0 == msg.arg1) { 7030 // Null indicates deleting the old layer, but 7031 // don't actually do so until we've got the 7032 // new page to display. 7033 mDelayedDeleteRootLayer = true; 7034 } else { 7035 mDelayedDeleteRootLayer = false; 7036 nativeSetRootLayer(msg.arg1); 7037 invalidate(); 7038 } 7039 break; 7040 } 7041 case REQUEST_FORM_DATA: 7042 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7043 if (mWebTextView.isSameTextField(msg.arg1)) { 7044 mWebTextView.setAdapterCustom(adapter); 7045 } 7046 break; 7047 case RESUME_WEBCORE_PRIORITY: 7048 WebViewCore.resumePriority(); 7049 WebViewCore.resumeUpdatePicture(mWebViewCore); 7050 break; 7051 7052 case LONG_PRESS_CENTER: 7053 // as this is shared by keydown and trackballdown, reset all 7054 // the states 7055 mGotCenterDown = false; 7056 mTrackballDown = false; 7057 performLongClick(); 7058 break; 7059 7060 case WEBCORE_NEED_TOUCH_EVENTS: 7061 mForwardTouchEvents = (msg.arg1 != 0); 7062 break; 7063 7064 case PREVENT_TOUCH_ID: 7065 if (inFullScreenMode()) { 7066 break; 7067 } 7068 if (msg.obj == null) { 7069 if (msg.arg1 == MotionEvent.ACTION_DOWN 7070 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7071 // if prevent default is called from WebCore, UI 7072 // will not handle the rest of the touch events any 7073 // more. 7074 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7075 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7076 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7077 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7078 // the return for the first ACTION_MOVE will decide 7079 // whether UI will handle touch or not. Currently no 7080 // support for alternating prevent default 7081 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7082 : PREVENT_DEFAULT_NO; 7083 } 7084 } else if (msg.arg2 == 0) { 7085 // prevent default is not called in WebCore, so the 7086 // message needs to be reprocessed in UI 7087 TouchEventData ted = (TouchEventData) msg.obj; 7088 switch (ted.mAction) { 7089 case MotionEvent.ACTION_DOWN: 7090 mLastDeferTouchX = ted.mViewX; 7091 mLastDeferTouchY = ted.mViewY; 7092 mDeferTouchMode = TOUCH_INIT_MODE; 7093 break; 7094 case MotionEvent.ACTION_MOVE: { 7095 // no snapping in defer process 7096 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7097 mDeferTouchMode = TOUCH_DRAG_MODE; 7098 mLastDeferTouchX = ted.mViewX; 7099 mLastDeferTouchY = ted.mViewY; 7100 startDrag(); 7101 } 7102 int deltaX = pinLocX((int) (mScrollX 7103 + mLastDeferTouchX - ted.mViewX)) 7104 - mScrollX; 7105 int deltaY = pinLocY((int) (mScrollY 7106 + mLastDeferTouchY - ted.mViewY)) 7107 - mScrollY; 7108 doDrag(deltaX, deltaY); 7109 if (deltaX != 0) mLastDeferTouchX = ted.mViewX; 7110 if (deltaY != 0) mLastDeferTouchY = ted.mViewY; 7111 break; 7112 } 7113 case MotionEvent.ACTION_UP: 7114 case MotionEvent.ACTION_CANCEL: 7115 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7116 // no fling in defer process 7117 mScroller.springBack(mScrollX, mScrollY, 0, 7118 computeMaxScrollX(), 0, 7119 computeMaxScrollY()); 7120 invalidate(); 7121 WebViewCore.resumePriority(); 7122 WebViewCore.resumeUpdatePicture(mWebViewCore); 7123 } 7124 mDeferTouchMode = TOUCH_DONE_MODE; 7125 break; 7126 case WebViewCore.ACTION_DOUBLETAP: 7127 // doDoubleTap() needs mLastTouchX/Y as anchor 7128 mLastTouchX = ted.mViewX; 7129 mLastTouchY = ted.mViewY; 7130 doDoubleTap(); 7131 mDeferTouchMode = TOUCH_DONE_MODE; 7132 break; 7133 case WebViewCore.ACTION_LONGPRESS: 7134 HitTestResult hitTest = getHitTestResult(); 7135 if (hitTest != null && hitTest.mType 7136 != HitTestResult.UNKNOWN_TYPE) { 7137 performLongClick(); 7138 rebuildWebTextView(); 7139 } 7140 mDeferTouchMode = TOUCH_DONE_MODE; 7141 break; 7142 } 7143 } 7144 break; 7145 7146 case REQUEST_KEYBOARD: 7147 if (msg.arg1 == 0) { 7148 hideSoftKeyboard(); 7149 } else { 7150 displaySoftKeyboard(false); 7151 } 7152 break; 7153 7154 case FIND_AGAIN: 7155 // Ignore if find has been dismissed. 7156 if (mFindIsUp) { 7157 findAll(mLastFind); 7158 } 7159 break; 7160 7161 case DRAG_HELD_MOTIONLESS: 7162 mHeldMotionless = MOTIONLESS_TRUE; 7163 invalidate(); 7164 // fall through to keep scrollbars awake 7165 7166 case AWAKEN_SCROLL_BARS: 7167 if (mTouchMode == TOUCH_DRAG_MODE 7168 && mHeldMotionless == MOTIONLESS_TRUE) { 7169 awakenScrollBars(ViewConfiguration 7170 .getScrollDefaultDelay(), false); 7171 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7172 .obtainMessage(AWAKEN_SCROLL_BARS), 7173 ViewConfiguration.getScrollDefaultDelay()); 7174 } 7175 break; 7176 7177 case DO_MOTION_UP: 7178 doMotionUp(msg.arg1, msg.arg2); 7179 break; 7180 7181 case SHOW_FULLSCREEN: { 7182 View view = (View) msg.obj; 7183 int npp = msg.arg1; 7184 7185 if (mFullScreenHolder != null) { 7186 Log.w(LOGTAG, "Should not have another full screen."); 7187 mFullScreenHolder.dismiss(); 7188 } 7189 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7190 mFullScreenHolder.setContentView(view); 7191 mFullScreenHolder.setCancelable(false); 7192 mFullScreenHolder.setCanceledOnTouchOutside(false); 7193 mFullScreenHolder.show(); 7194 7195 break; 7196 } 7197 case HIDE_FULLSCREEN: 7198 if (inFullScreenMode()) { 7199 mFullScreenHolder.dismiss(); 7200 mFullScreenHolder = null; 7201 } 7202 break; 7203 7204 case DOM_FOCUS_CHANGED: 7205 if (inEditingMode()) { 7206 nativeClearCursor(); 7207 rebuildWebTextView(); 7208 } 7209 break; 7210 7211 case SHOW_RECT_MSG_ID: { 7212 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7213 int x = mScrollX; 7214 int left = contentToViewX(data.mLeft); 7215 int width = contentToViewDimension(data.mWidth); 7216 int maxWidth = contentToViewDimension(data.mContentWidth); 7217 int viewWidth = getViewWidth(); 7218 if (width < viewWidth) { 7219 // center align 7220 x += left + width / 2 - mScrollX - viewWidth / 2; 7221 } else { 7222 x += (int) (left + data.mXPercentInDoc * width 7223 - mScrollX - data.mXPercentInView * viewWidth); 7224 } 7225 if (DebugFlags.WEB_VIEW) { 7226 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7227 width + ",maxWidth=" + maxWidth + 7228 ",viewWidth=" + viewWidth + ",x=" 7229 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7230 ",xPercentInView=" + data.mXPercentInView+ ")"); 7231 } 7232 // use the passing content width to cap x as the current 7233 // mContentWidth may not be updated yet 7234 x = Math.max(0, 7235 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7236 int top = contentToViewY(data.mTop); 7237 int height = contentToViewDimension(data.mHeight); 7238 int maxHeight = contentToViewDimension(data.mContentHeight); 7239 int viewHeight = getViewHeight(); 7240 int y = (int) (top + data.mYPercentInDoc * height - 7241 data.mYPercentInView * viewHeight); 7242 if (DebugFlags.WEB_VIEW) { 7243 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7244 height + ",maxHeight=" + maxHeight + 7245 ",viewHeight=" + viewHeight + ",y=" 7246 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7247 ",yPercentInView=" + data.mYPercentInView+ ")"); 7248 } 7249 // use the passing content height to cap y as the current 7250 // mContentHeight may not be updated yet 7251 y = Math.max(0, 7252 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7253 // We need to take into account the visible title height 7254 // when scrolling since y is an absolute view position. 7255 y = Math.max(0, y - getVisibleTitleHeight()); 7256 scrollTo(x, y); 7257 } 7258 break; 7259 7260 case CENTER_FIT_RECT: 7261 Rect r = (Rect)msg.obj; 7262 mInZoomOverview = false; 7263 centerFitRect(r.left, r.top, r.width(), r.height()); 7264 break; 7265 7266 case SET_SCROLLBAR_MODES: 7267 mHorizontalScrollBarMode = msg.arg1; 7268 mVerticalScrollBarMode = msg.arg2; 7269 break; 7270 7271 default: 7272 super.handleMessage(msg); 7273 break; 7274 } 7275 } 7276 } 7277 7278 /** 7279 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7280 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7281 */ 7282 private void updateTextSelectionFromMessage(int nodePointer, 7283 int textGeneration, WebViewCore.TextSelectionData data) { 7284 if (inEditingMode() 7285 && mWebTextView.isSameTextField(nodePointer) 7286 && textGeneration == mTextGeneration) { 7287 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7288 } 7289 } 7290 7291 // Class used to use a dropdown for a <select> element 7292 private class InvokeListBox implements Runnable { 7293 // Whether the listbox allows multiple selection. 7294 private boolean mMultiple; 7295 // Passed in to a list with multiple selection to tell 7296 // which items are selected. 7297 private int[] mSelectedArray; 7298 // Passed in to a list with single selection to tell 7299 // where the initial selection is. 7300 private int mSelection; 7301 7302 private Container[] mContainers; 7303 7304 // Need these to provide stable ids to my ArrayAdapter, 7305 // which normally does not have stable ids. (Bug 1250098) 7306 private class Container extends Object { 7307 /** 7308 * Possible values for mEnabled. Keep in sync with OptionStatus in 7309 * WebViewCore.cpp 7310 */ 7311 final static int OPTGROUP = -1; 7312 final static int OPTION_DISABLED = 0; 7313 final static int OPTION_ENABLED = 1; 7314 7315 String mString; 7316 int mEnabled; 7317 int mId; 7318 7319 public String toString() { 7320 return mString; 7321 } 7322 } 7323 7324 /** 7325 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7326 * and allow filtering. 7327 */ 7328 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7329 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7330 super(context, 7331 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7332 com.android.internal.R.layout.select_dialog_singlechoice, 7333 objects); 7334 } 7335 7336 @Override 7337 public View getView(int position, View convertView, 7338 ViewGroup parent) { 7339 // Always pass in null so that we will get a new CheckedTextView 7340 // Otherwise, an item which was previously used as an <optgroup> 7341 // element (i.e. has no check), could get used as an <option> 7342 // element, which needs a checkbox/radio, but it would not have 7343 // one. 7344 convertView = super.getView(position, null, parent); 7345 Container c = item(position); 7346 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7347 // ListView does not draw dividers between disabled and 7348 // enabled elements. Use a LinearLayout to provide dividers 7349 LinearLayout layout = new LinearLayout(mContext); 7350 layout.setOrientation(LinearLayout.VERTICAL); 7351 if (position > 0) { 7352 View dividerTop = new View(mContext); 7353 dividerTop.setBackgroundResource( 7354 android.R.drawable.divider_horizontal_bright); 7355 layout.addView(dividerTop); 7356 } 7357 7358 if (Container.OPTGROUP == c.mEnabled) { 7359 // Currently select_dialog_multichoice and 7360 // select_dialog_singlechoice are CheckedTextViews. If 7361 // that changes, the class cast will no longer be valid. 7362 Assert.assertTrue( 7363 convertView instanceof CheckedTextView); 7364 ((CheckedTextView) convertView).setCheckMarkDrawable( 7365 null); 7366 } else { 7367 // c.mEnabled == Container.OPTION_DISABLED 7368 // Draw the disabled element in a disabled state. 7369 convertView.setEnabled(false); 7370 } 7371 7372 layout.addView(convertView); 7373 if (position < getCount() - 1) { 7374 View dividerBottom = new View(mContext); 7375 dividerBottom.setBackgroundResource( 7376 android.R.drawable.divider_horizontal_bright); 7377 layout.addView(dividerBottom); 7378 } 7379 return layout; 7380 } 7381 return convertView; 7382 } 7383 7384 @Override 7385 public boolean hasStableIds() { 7386 // AdapterView's onChanged method uses this to determine whether 7387 // to restore the old state. Return false so that the old (out 7388 // of date) state does not replace the new, valid state. 7389 return false; 7390 } 7391 7392 private Container item(int position) { 7393 if (position < 0 || position >= getCount()) { 7394 return null; 7395 } 7396 return (Container) getItem(position); 7397 } 7398 7399 @Override 7400 public long getItemId(int position) { 7401 Container item = item(position); 7402 if (item == null) { 7403 return -1; 7404 } 7405 return item.mId; 7406 } 7407 7408 @Override 7409 public boolean areAllItemsEnabled() { 7410 return false; 7411 } 7412 7413 @Override 7414 public boolean isEnabled(int position) { 7415 Container item = item(position); 7416 if (item == null) { 7417 return false; 7418 } 7419 return Container.OPTION_ENABLED == item.mEnabled; 7420 } 7421 } 7422 7423 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7424 mMultiple = true; 7425 mSelectedArray = selected; 7426 7427 int length = array.length; 7428 mContainers = new Container[length]; 7429 for (int i = 0; i < length; i++) { 7430 mContainers[i] = new Container(); 7431 mContainers[i].mString = array[i]; 7432 mContainers[i].mEnabled = enabled[i]; 7433 mContainers[i].mId = i; 7434 } 7435 } 7436 7437 private InvokeListBox(String[] array, int[] enabled, int selection) { 7438 mSelection = selection; 7439 mMultiple = false; 7440 7441 int length = array.length; 7442 mContainers = new Container[length]; 7443 for (int i = 0; i < length; i++) { 7444 mContainers[i] = new Container(); 7445 mContainers[i].mString = array[i]; 7446 mContainers[i].mEnabled = enabled[i]; 7447 mContainers[i].mId = i; 7448 } 7449 } 7450 7451 /* 7452 * Whenever the data set changes due to filtering, this class ensures 7453 * that the checked item remains checked. 7454 */ 7455 private class SingleDataSetObserver extends DataSetObserver { 7456 private long mCheckedId; 7457 private ListView mListView; 7458 private Adapter mAdapter; 7459 7460 /* 7461 * Create a new observer. 7462 * @param id The ID of the item to keep checked. 7463 * @param l ListView for getting and clearing the checked states 7464 * @param a Adapter for getting the IDs 7465 */ 7466 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7467 mCheckedId = id; 7468 mListView = l; 7469 mAdapter = a; 7470 } 7471 7472 public void onChanged() { 7473 // The filter may have changed which item is checked. Find the 7474 // item that the ListView thinks is checked. 7475 int position = mListView.getCheckedItemPosition(); 7476 long id = mAdapter.getItemId(position); 7477 if (mCheckedId != id) { 7478 // Clear the ListView's idea of the checked item, since 7479 // it is incorrect 7480 mListView.clearChoices(); 7481 // Search for mCheckedId. If it is in the filtered list, 7482 // mark it as checked 7483 int count = mAdapter.getCount(); 7484 for (int i = 0; i < count; i++) { 7485 if (mAdapter.getItemId(i) == mCheckedId) { 7486 mListView.setItemChecked(i, true); 7487 break; 7488 } 7489 } 7490 } 7491 } 7492 7493 public void onInvalidate() {} 7494 } 7495 7496 public void run() { 7497 final ListView listView = (ListView) LayoutInflater.from(mContext) 7498 .inflate(com.android.internal.R.layout.select_dialog, null); 7499 final MyArrayListAdapter adapter = new 7500 MyArrayListAdapter(mContext, mContainers, mMultiple); 7501 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7502 .setView(listView).setCancelable(true) 7503 .setInverseBackgroundForced(true); 7504 7505 if (mMultiple) { 7506 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7507 public void onClick(DialogInterface dialog, int which) { 7508 mWebViewCore.sendMessage( 7509 EventHub.LISTBOX_CHOICES, 7510 adapter.getCount(), 0, 7511 listView.getCheckedItemPositions()); 7512 }}); 7513 b.setNegativeButton(android.R.string.cancel, 7514 new DialogInterface.OnClickListener() { 7515 public void onClick(DialogInterface dialog, int which) { 7516 mWebViewCore.sendMessage( 7517 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7518 }}); 7519 } 7520 mListBoxDialog = b.create(); 7521 listView.setAdapter(adapter); 7522 listView.setFocusableInTouchMode(true); 7523 // There is a bug (1250103) where the checks in a ListView with 7524 // multiple items selected are associated with the positions, not 7525 // the ids, so the items do not properly retain their checks when 7526 // filtered. Do not allow filtering on multiple lists until 7527 // that bug is fixed. 7528 7529 listView.setTextFilterEnabled(!mMultiple); 7530 if (mMultiple) { 7531 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7532 int length = mSelectedArray.length; 7533 for (int i = 0; i < length; i++) { 7534 listView.setItemChecked(mSelectedArray[i], true); 7535 } 7536 } else { 7537 listView.setOnItemClickListener(new OnItemClickListener() { 7538 public void onItemClick(AdapterView parent, View v, 7539 int position, long id) { 7540 mWebViewCore.sendMessage( 7541 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 7542 mListBoxDialog.dismiss(); 7543 mListBoxDialog = null; 7544 } 7545 }); 7546 if (mSelection != -1) { 7547 listView.setSelection(mSelection); 7548 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7549 listView.setItemChecked(mSelection, true); 7550 DataSetObserver observer = new SingleDataSetObserver( 7551 adapter.getItemId(mSelection), listView, adapter); 7552 adapter.registerDataSetObserver(observer); 7553 } 7554 } 7555 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7556 public void onCancel(DialogInterface dialog) { 7557 mWebViewCore.sendMessage( 7558 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7559 mListBoxDialog = null; 7560 } 7561 }); 7562 mListBoxDialog.show(); 7563 } 7564 } 7565 7566 /* 7567 * Request a dropdown menu for a listbox with multiple selection. 7568 * 7569 * @param array Labels for the listbox. 7570 * @param enabledArray State for each element in the list. See static 7571 * integers in Container class. 7572 * @param selectedArray Which positions are initally selected. 7573 */ 7574 void requestListBox(String[] array, int[] enabledArray, int[] 7575 selectedArray) { 7576 mPrivateHandler.post( 7577 new InvokeListBox(array, enabledArray, selectedArray)); 7578 } 7579 7580 private void updateZoomRange(WebViewCore.RestoreState restoreState, 7581 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 7582 if (restoreState.mMinScale == 0) { 7583 if (restoreState.mMobileSite) { 7584 if (minPrefWidth > Math.max(0, viewWidth)) { 7585 mMinZoomScale = (float) viewWidth / minPrefWidth; 7586 mMinZoomScaleFixed = false; 7587 if (updateZoomOverview) { 7588 WebSettings settings = getSettings(); 7589 mInZoomOverview = settings.getUseWideViewPort() && 7590 settings.getLoadWithOverviewMode(); 7591 } 7592 } else { 7593 mMinZoomScale = restoreState.mDefaultScale; 7594 mMinZoomScaleFixed = true; 7595 } 7596 } else { 7597 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 7598 mMinZoomScaleFixed = false; 7599 } 7600 } else { 7601 mMinZoomScale = restoreState.mMinScale; 7602 mMinZoomScaleFixed = true; 7603 } 7604 if (restoreState.mMaxScale == 0) { 7605 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 7606 } else { 7607 mMaxZoomScale = restoreState.mMaxScale; 7608 } 7609 } 7610 7611 /* 7612 * Request a dropdown menu for a listbox with single selection or a single 7613 * <select> element. 7614 * 7615 * @param array Labels for the listbox. 7616 * @param enabledArray State for each element in the list. See static 7617 * integers in Container class. 7618 * @param selection Which position is initally selected. 7619 */ 7620 void requestListBox(String[] array, int[] enabledArray, int selection) { 7621 mPrivateHandler.post( 7622 new InvokeListBox(array, enabledArray, selection)); 7623 } 7624 7625 // called by JNI 7626 private void sendMoveFocus(int frame, int node) { 7627 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7628 new WebViewCore.CursorData(frame, node, 0, 0)); 7629 } 7630 7631 // called by JNI 7632 private void sendMoveMouse(int frame, int node, int x, int y) { 7633 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7634 new WebViewCore.CursorData(frame, node, x, y)); 7635 } 7636 7637 /* 7638 * Send a mouse move event to the webcore thread. 7639 * 7640 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7641 * which wants key events, but it is not the focus. This 7642 * will make the visual appear as though nothing is in 7643 * focus. Remove the WebTextView, if present, and stop 7644 * drawing the blinking caret. 7645 * called by JNI 7646 */ 7647 private void sendMoveMouseIfLatest(boolean removeFocus) { 7648 if (removeFocus) { 7649 clearTextEntry(true); 7650 } 7651 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7652 cursorData()); 7653 } 7654 7655 // called by JNI 7656 private void sendMotionUp(int touchGeneration, 7657 int frame, int node, int x, int y) { 7658 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7659 touchUpData.mMoveGeneration = touchGeneration; 7660 touchUpData.mFrame = frame; 7661 touchUpData.mNode = node; 7662 touchUpData.mX = x; 7663 touchUpData.mY = y; 7664 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7665 } 7666 7667 7668 private int getScaledMaxXScroll() { 7669 int width; 7670 if (mHeightCanMeasure == false) { 7671 width = getViewWidth() / 4; 7672 } else { 7673 Rect visRect = new Rect(); 7674 calcOurVisibleRect(visRect); 7675 width = visRect.width() / 2; 7676 } 7677 // FIXME the divisor should be retrieved from somewhere 7678 return viewToContentX(width); 7679 } 7680 7681 private int getScaledMaxYScroll() { 7682 int height; 7683 if (mHeightCanMeasure == false) { 7684 height = getViewHeight() / 4; 7685 } else { 7686 Rect visRect = new Rect(); 7687 calcOurVisibleRect(visRect); 7688 height = visRect.height() / 2; 7689 } 7690 // FIXME the divisor should be retrieved from somewhere 7691 // the closest thing today is hard-coded into ScrollView.java 7692 // (from ScrollView.java, line 363) int maxJump = height/2; 7693 return Math.round(height * mInvActualScale); 7694 } 7695 7696 /** 7697 * Called by JNI to invalidate view 7698 */ 7699 private void viewInvalidate() { 7700 invalidate(); 7701 } 7702 7703 /** 7704 * Pass the key to the plugin. This assumes that nativeFocusIsPlugin() 7705 * returned true. 7706 */ 7707 private void letPluginHandleNavKey(int keyCode, long time, boolean down) { 7708 int keyEventAction; 7709 int eventHubAction; 7710 if (down) { 7711 keyEventAction = KeyEvent.ACTION_DOWN; 7712 eventHubAction = EventHub.KEY_DOWN; 7713 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7714 } else { 7715 keyEventAction = KeyEvent.ACTION_UP; 7716 eventHubAction = EventHub.KEY_UP; 7717 } 7718 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7719 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7720 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7721 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7722 , 0, 0, 0); 7723 mWebViewCore.sendMessage(eventHubAction, event); 7724 } 7725 7726 // return true if the key was handled 7727 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7728 long time) { 7729 if (mNativeClass == 0) { 7730 return false; 7731 } 7732 mLastCursorTime = time; 7733 mLastCursorBounds = nativeGetCursorRingBounds(); 7734 boolean keyHandled 7735 = nativeMoveCursor(keyCode, count, noScroll) == false; 7736 if (DebugFlags.WEB_VIEW) { 7737 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7738 + " mLastCursorTime=" + mLastCursorTime 7739 + " handled=" + keyHandled); 7740 } 7741 if (keyHandled == false || mHeightCanMeasure == false) { 7742 return keyHandled; 7743 } 7744 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7745 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7746 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7747 Rect visRect = new Rect(); 7748 calcOurVisibleRect(visRect); 7749 Rect outset = new Rect(visRect); 7750 int maxXScroll = visRect.width() / 2; 7751 int maxYScroll = visRect.height() / 2; 7752 outset.inset(-maxXScroll, -maxYScroll); 7753 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7754 return keyHandled; 7755 } 7756 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7757 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7758 maxXScroll); 7759 if (maxH > 0) { 7760 pinScrollBy(maxH, 0, true, 0); 7761 } else { 7762 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7763 -maxXScroll); 7764 if (maxH < 0) { 7765 pinScrollBy(maxH, 0, true, 0); 7766 } 7767 } 7768 if (mLastCursorBounds.isEmpty()) return keyHandled; 7769 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7770 return keyHandled; 7771 } 7772 if (DebugFlags.WEB_VIEW) { 7773 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7774 + contentCursorRingBounds); 7775 } 7776 requestRectangleOnScreen(viewCursorRingBounds); 7777 mUserScroll = true; 7778 return keyHandled; 7779 } 7780 7781 /** 7782 * Set the background color. It's white by default. Pass 7783 * zero to make the view transparent. 7784 * @param color the ARGB color described by Color.java 7785 */ 7786 public void setBackgroundColor(int color) { 7787 mBackgroundColor = color; 7788 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7789 } 7790 7791 public void debugDump() { 7792 nativeDebugDump(); 7793 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7794 } 7795 7796 /** 7797 * Draw the HTML page into the specified canvas. This call ignores any 7798 * view-specific zoom, scroll offset, or other changes. It does not draw 7799 * any view-specific chrome, such as progress or URL bars. 7800 * 7801 * @hide only needs to be accessible to Browser and testing 7802 */ 7803 public void drawPage(Canvas canvas) { 7804 mWebViewCore.drawContentPicture(canvas, 0, false, false); 7805 } 7806 7807 /** 7808 * Set the time to wait between passing touches to WebCore. See also the 7809 * TOUCH_SENT_INTERVAL member for further discussion. 7810 * 7811 * @hide This is only used by the DRT test application. 7812 */ 7813 public void setTouchInterval(int interval) { 7814 mCurrentTouchInterval = interval; 7815 } 7816 7817 /** 7818 * Update our cache with updatedText. 7819 * @param updatedText The new text to put in our cache. 7820 */ 7821 /* package */ void updateCachedTextfield(String updatedText) { 7822 // Also place our generation number so that when we look at the cache 7823 // we recognize that it is up to date. 7824 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7825 } 7826 7827 private native int nativeCacheHitFramePointer(); 7828 private native Rect nativeCacheHitNodeBounds(); 7829 private native int nativeCacheHitNodePointer(); 7830 /* package */ native void nativeClearCursor(); 7831 private native void nativeCreate(int ptr); 7832 private native int nativeCursorFramePointer(); 7833 private native Rect nativeCursorNodeBounds(); 7834 private native int nativeCursorNodePointer(); 7835 /* package */ native boolean nativeCursorMatchesFocus(); 7836 private native boolean nativeCursorIntersects(Rect visibleRect); 7837 private native boolean nativeCursorIsAnchor(); 7838 private native boolean nativeCursorIsTextInput(); 7839 private native Point nativeCursorPosition(); 7840 private native String nativeCursorText(); 7841 /** 7842 * Returns true if the native cursor node says it wants to handle key events 7843 * (ala plugins). This can only be called if mNativeClass is non-zero! 7844 */ 7845 private native boolean nativeCursorWantsKeyEvents(); 7846 private native void nativeDebugDump(); 7847 private native void nativeDestroy(); 7848 private native boolean nativeEvaluateLayersAnimations(); 7849 private native void nativeExtendSelection(int x, int y); 7850 private native void nativeDrawExtras(Canvas canvas, int extra); 7851 private native void nativeDumpDisplayTree(String urlOrNull); 7852 private native int nativeFindAll(String findLower, String findUpper); 7853 private native void nativeFindNext(boolean forward); 7854 /* package */ native int nativeFocusCandidateFramePointer(); 7855 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7856 /* package */ native boolean nativeFocusCandidateIsPassword(); 7857 private native boolean nativeFocusCandidateIsRtlText(); 7858 private native boolean nativeFocusCandidateIsTextInput(); 7859 /* package */ native int nativeFocusCandidateMaxLength(); 7860 /* package */ native String nativeFocusCandidateName(); 7861 private native Rect nativeFocusCandidateNodeBounds(); 7862 /* package */ native int nativeFocusCandidatePointer(); 7863 private native String nativeFocusCandidateText(); 7864 private native int nativeFocusCandidateTextSize(); 7865 /** 7866 * Returns an integer corresponding to WebView.cpp::type. 7867 * See WebTextView.setType() 7868 */ 7869 private native int nativeFocusCandidateType(); 7870 private native boolean nativeFocusIsPlugin(); 7871 private native Rect nativeFocusNodeBounds(); 7872 /* package */ native int nativeFocusNodePointer(); 7873 private native Rect nativeGetCursorRingBounds(); 7874 private native String nativeGetSelection(); 7875 private native boolean nativeHasCursorNode(); 7876 private native boolean nativeHasFocusNode(); 7877 private native void nativeHideCursor(); 7878 private native boolean nativeHitSelection(int x, int y); 7879 private native String nativeImageURI(int x, int y); 7880 private native void nativeInstrumentReport(); 7881 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7882 // return true if the page has been scrolled 7883 private native boolean nativeMotionUp(int x, int y, int slop); 7884 // returns false if it handled the key 7885 private native boolean nativeMoveCursor(int keyCode, int count, 7886 boolean noScroll); 7887 private native int nativeMoveGeneration(); 7888 private native void nativeMoveSelection(int x, int y); 7889 private native boolean nativePointInNavCache(int x, int y, int slop); 7890 // Like many other of our native methods, you must make sure that 7891 // mNativeClass is not null before calling this method. 7892 private native void nativeRecordButtons(boolean focused, 7893 boolean pressed, boolean invalidate); 7894 private native void nativeResetSelection(); 7895 private native void nativeSelectAll(); 7896 private native void nativeSelectBestAt(Rect rect); 7897 private native int nativeSelectionX(); 7898 private native int nativeSelectionY(); 7899 private native int nativeFindIndex(); 7900 private native void nativeSetExtendSelection(); 7901 private native void nativeSetFindIsEmpty(); 7902 private native void nativeSetFindIsUp(boolean isUp); 7903 private native void nativeSetFollowedLink(boolean followed); 7904 private native void nativeSetHeightCanMeasure(boolean measure); 7905 private native void nativeSetRootLayer(int layer); 7906 private native void nativeSetSelectionPointer(boolean set, 7907 float scale, int x, int y); 7908 private native boolean nativeStartSelection(int x, int y); 7909 private native void nativeSetSelectionRegion(boolean set); 7910 private native Rect nativeSubtractLayers(Rect content); 7911 private native int nativeTextGeneration(); 7912 // Never call this version except by updateCachedTextfield(String) - 7913 // we always want to pass in our generation number. 7914 private native void nativeUpdateCachedTextfield(String updatedText, 7915 int generation); 7916 private native boolean nativeWordSelection(int x, int y); 7917 // return NO_LEFTEDGE means failure. 7918 private static final int NO_LEFTEDGE = -1; 7919 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 7920} 7921