WebView.java revision 560ba6e1a9dbd8a57fdee2040185981162ed09d6
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import com.android.internal.R; 20 21import android.annotation.Widget; 22import android.app.AlertDialog; 23import android.content.Context; 24import android.content.DialogInterface; 25import android.content.DialogInterface.OnCancelListener; 26import android.content.Intent; 27import android.content.pm.PackageManager; 28import android.content.res.Resources; 29import android.database.DataSetObserver; 30import android.graphics.Bitmap; 31import android.graphics.BitmapFactory; 32import android.graphics.BitmapShader; 33import android.graphics.Canvas; 34import android.graphics.Color; 35import android.graphics.Interpolator; 36import android.graphics.Paint; 37import android.graphics.Picture; 38import android.graphics.Point; 39import android.graphics.Rect; 40import android.graphics.RectF; 41import android.graphics.Region; 42import android.graphics.Shader; 43import android.graphics.drawable.Drawable; 44import android.net.Uri; 45import android.net.http.SslCertificate; 46import android.os.Bundle; 47import android.os.Handler; 48import android.os.Message; 49import android.os.ServiceManager; 50import android.os.SystemClock; 51import android.text.IClipboard; 52import android.text.Selection; 53import android.text.Spannable; 54import android.util.AttributeSet; 55import android.util.EventLog; 56import android.util.Log; 57import android.util.TypedValue; 58import android.view.Gravity; 59import android.view.KeyEvent; 60import android.view.LayoutInflater; 61import android.view.MotionEvent; 62import android.view.ScaleGestureDetector; 63import android.view.SoundEffectConstants; 64import android.view.VelocityTracker; 65import android.view.View; 66import android.view.ViewConfiguration; 67import android.view.ViewGroup; 68import android.view.ViewTreeObserver; 69import android.view.animation.AlphaAnimation; 70import android.view.inputmethod.EditorInfo; 71import android.view.inputmethod.InputConnection; 72import android.view.inputmethod.InputMethodManager; 73import android.webkit.WebTextView.AutoCompleteAdapter; 74import android.webkit.WebViewCore.EventHub; 75import android.webkit.WebViewCore.TouchEventData; 76import android.widget.AbsoluteLayout; 77import android.widget.Adapter; 78import android.widget.AdapterView; 79import android.widget.AdapterView.OnItemClickListener; 80import android.widget.ArrayAdapter; 81import android.widget.CheckedTextView; 82import android.widget.EdgeGlow; 83import android.widget.FrameLayout; 84import android.widget.LinearLayout; 85import android.widget.ListView; 86import android.widget.OverScroller; 87import android.widget.Toast; 88import android.widget.ZoomButtonsController; 89import android.widget.ZoomControls; 90 91import java.io.File; 92import java.io.FileInputStream; 93import java.io.FileNotFoundException; 94import java.io.FileOutputStream; 95import java.net.URLDecoder; 96import java.util.ArrayList; 97import java.util.HashMap; 98import java.util.List; 99import java.util.Map; 100import java.util.Set; 101 102import junit.framework.Assert; 103 104/** 105 * <p>A View that displays web pages. This class is the basis upon which you 106 * can roll your own web browser or simply display some online content within your Activity. 107 * It uses the WebKit rendering engine to display 108 * web pages and includes methods to navigate forward and backward 109 * through a history, zoom in and out, perform text searches and more.</p> 110 * <p>To enable the built-in zoom, set 111 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 112 * (introduced in API version 3). 113 * <p>Note that, in order for your Activity to access the Internet and load web pages 114 * in a WebView, you must add the {@code INTERNET} permissions to your 115 * Android Manifest file:</p> 116 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 117 * 118 * <p>This must be a child of the <a 119 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 120 * element.</p> 121 * 122 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 123 * tutorial</a>.</p> 124 * 125 * <h3>Basic usage</h3> 126 * 127 * <p>By default, a WebView provides no browser-like widgets, does not 128 * enable JavaScript and web page errors are ignored. If your goal is only 129 * to display some HTML as a part of your UI, this is probably fine; 130 * the user won't need to interact with the web page beyond reading 131 * it, and the web page won't need to interact with the user. If you 132 * actually want a full-blown web browser, then you probably want to 133 * invoke the Browser application with a URL Intent rather than show it 134 * with a WebView. For example: 135 * <pre> 136 * Uri uri = Uri.parse("http://www.example.com"); 137 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 138 * startActivity(intent); 139 * </pre> 140 * <p>See {@link android.content.Intent} for more information.</p> 141 * 142 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 143 * or set the entire Activity window as a WebView during {@link 144 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 145 * <pre class="prettyprint"> 146 * WebView webview = new WebView(this); 147 * setContentView(webview); 148 * </pre> 149 * 150 * <p>Then load the desired web page:</p> 151 * <pre> 152 * // Simplest usage: note that an exception will NOT be thrown 153 * // if there is an error loading this page (see below). 154 * webview.loadUrl("http://slashdot.org/"); 155 * 156 * // OR, you can also load from an HTML string: 157 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 158 * webview.loadData(summary, "text/html", "utf-8"); 159 * // ... although note that there are restrictions on what this HTML can do. 160 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 161 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 162 * </pre> 163 * 164 * <p>A WebView has several customization points where you can add your 165 * own behavior. These are:</p> 166 * 167 * <ul> 168 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 169 * This class is called when something that might impact a 170 * browser UI happens, for instance, progress updates and 171 * JavaScript alerts are sent here (see <a 172 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 173 * </li> 174 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 175 * It will be called when things happen that impact the 176 * rendering of the content, eg, errors or form submissions. You 177 * can also intercept URL loading here (via {@link 178 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 179 * shouldOverrideUrlLoading()}).</li> 180 * <li>Modifying the {@link android.webkit.WebSettings}, such as 181 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 182 * setJavaScriptEnabled()}. </li> 183 * <li>Adding JavaScript-to-Java interfaces with the {@link 184 * android.webkit.WebView#addJavascriptInterface} method. 185 * This lets you bind Java objects into the WebView so they can be 186 * controlled from the web pages JavaScript.</li> 187 * </ul> 188 * 189 * <p>Here's a more complicated example, showing error handling, 190 * settings, and progress notification:</p> 191 * 192 * <pre class="prettyprint"> 193 * // Let's display the progress in the activity title bar, like the 194 * // browser app does. 195 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 196 * 197 * webview.getSettings().setJavaScriptEnabled(true); 198 * 199 * final Activity activity = this; 200 * webview.setWebChromeClient(new WebChromeClient() { 201 * public void onProgressChanged(WebView view, int progress) { 202 * // Activities and WebViews measure progress with different scales. 203 * // The progress meter will automatically disappear when we reach 100% 204 * activity.setProgress(progress * 1000); 205 * } 206 * }); 207 * webview.setWebViewClient(new WebViewClient() { 208 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 209 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 210 * } 211 * }); 212 * 213 * webview.loadUrl("http://slashdot.org/"); 214 * </pre> 215 * 216 * <h3>Cookie and window management</h3> 217 * 218 * <p>For obvious security reasons, your application has its own 219 * cache, cookie store etc.—it does not share the Browser 220 * application's data. Cookies are managed on a separate thread, so 221 * operations like index building don't block the UI 222 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 223 * if you want to use cookies in your application. 224 * </p> 225 * 226 * <p>By default, requests by the HTML to open new windows are 227 * ignored. This is true whether they be opened by JavaScript or by 228 * the target attribute on a link. You can customize your 229 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 230 * and render them in whatever manner you want.</p> 231 * 232 * <p>The standard behavior for an Activity is to be destroyed and 233 * recreated when the device orientation or any other configuration changes. This will cause 234 * the WebView to reload the current page. If you don't want that, you 235 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 236 * changes, and then just leave the WebView alone. It'll automatically 237 * re-orient itself as appropriate. Read <a 238 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 239 * more information about how to handle configuration changes during runtime.</p> 240 * 241 * 242 * <h3>Building web pages to support different screen densities</h3> 243 * 244 * <p>The screen density of a device is based on the screen resolution. A screen with low density 245 * has fewer available pixels per inch, where a screen with high density 246 * has more — sometimes significantly more — pixels per inch. The density of a 247 * screen is important because, other things being equal, a UI element (such as a button) whose 248 * height and width are defined in terms of screen pixels will appear larger on the lower density 249 * screen and smaller on the higher density screen. 250 * For simplicity, Android collapses all actual screen densities into three generalized densities: 251 * high, medium, and low.</p> 252 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 253 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 254 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 255 * are bigger). 256 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 257 * you (as a web developer) target screens with different screen densities.</p> 258 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 259 * <ul> 260 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 261 * default scaling factor used for the current device. For example, if the value of {@code 262 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 263 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 264 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 265 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 266 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 267 * (discussed below), then you can stop this default scaling behavior.</li> 268 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 269 * densities for which this style sheet is to be used. The corresponding value should be either 270 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 271 * density, or high density screens, respectively. For example: 272 * <pre> 273 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 274 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 275 * which is the high density pixel ratio.</p> 276 * </li> 277 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 278 * this to specify the target density for which the web page is designed, using the following 279 * values: 280 * <ul> 281 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 282 * occurs.</li> 283 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 284 * as appropriate.</li> 285 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 286 * low density screens scale down. This is also the default behavior.</li> 287 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 288 * as appropriate.</li> 289 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 290 * values are 70-400).</li> 291 * </ul> 292 * <p>Here's an example meta tag to specify the target density:</p> 293 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 294 * </ul> 295 * <p>If you want to modify your web page for different densities, by using the {@code 296 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 297 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 298 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 299 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 300 * 301 * 302 */ 303@Widget 304public class WebView extends AbsoluteLayout 305 implements ViewTreeObserver.OnGlobalFocusChangeListener, 306 ViewGroup.OnHierarchyChangeListener { 307 308 // enable debug output for drag trackers 309 private static final boolean DEBUG_DRAG_TRACKER = false; 310 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 311 // the screen all-the-time. Good for profiling our drawing code 312 static private final boolean AUTO_REDRAW_HACK = false; 313 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 314 private boolean mAutoRedraw; 315 316 static final String LOGTAG = "webview"; 317 318 private static class ExtendedZoomControls extends FrameLayout { 319 public ExtendedZoomControls(Context context, AttributeSet attrs) { 320 super(context, attrs); 321 LayoutInflater inflater = (LayoutInflater) 322 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 323 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 324 mPlusMinusZoomControls = (ZoomControls) findViewById( 325 com.android.internal.R.id.zoomControls); 326 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 327 View.GONE); 328 } 329 330 public void show(boolean showZoom, boolean canZoomOut) { 331 mPlusMinusZoomControls.setVisibility( 332 showZoom ? View.VISIBLE : View.GONE); 333 fade(View.VISIBLE, 0.0f, 1.0f); 334 } 335 336 public void hide() { 337 fade(View.GONE, 1.0f, 0.0f); 338 } 339 340 private void fade(int visibility, float startAlpha, float endAlpha) { 341 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 342 anim.setDuration(500); 343 startAnimation(anim); 344 setVisibility(visibility); 345 } 346 347 public boolean hasFocus() { 348 return mPlusMinusZoomControls.hasFocus(); 349 } 350 351 public void setOnZoomInClickListener(OnClickListener listener) { 352 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 353 } 354 355 public void setOnZoomOutClickListener(OnClickListener listener) { 356 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 357 } 358 359 ZoomControls mPlusMinusZoomControls; 360 } 361 362 /** 363 * Transportation object for returning WebView across thread boundaries. 364 */ 365 public class WebViewTransport { 366 private WebView mWebview; 367 368 /** 369 * Set the WebView to the transportation object. 370 * @param webview The WebView to transport. 371 */ 372 public synchronized void setWebView(WebView webview) { 373 mWebview = webview; 374 } 375 376 /** 377 * Return the WebView object. 378 * @return WebView The transported WebView object. 379 */ 380 public synchronized WebView getWebView() { 381 return mWebview; 382 } 383 } 384 385 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 386 private final CallbackProxy mCallbackProxy; 387 388 private final WebViewDatabase mDatabase; 389 390 // SSL certificate for the main top-level page (if secure) 391 private SslCertificate mCertificate; 392 393 // Native WebView pointer that is 0 until the native object has been 394 // created. 395 private int mNativeClass; 396 // This would be final but it needs to be set to null when the WebView is 397 // destroyed. 398 private WebViewCore mWebViewCore; 399 // Handler for dispatching UI messages. 400 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 401 private WebTextView mWebTextView; 402 // Used to ignore changes to webkit text that arrives to the UI side after 403 // more key events. 404 private int mTextGeneration; 405 406 // Used by WebViewCore to create child views. 407 /* package */ final ViewManager mViewManager; 408 409 // Used to display in full screen mode 410 PluginFullScreenHolder mFullScreenHolder; 411 412 /** 413 * Position of the last touch event. 414 */ 415 private float mLastTouchX; 416 private float mLastTouchY; 417 418 /** 419 * Time of the last touch event. 420 */ 421 private long mLastTouchTime; 422 423 /** 424 * Time of the last time sending touch event to WebViewCore 425 */ 426 private long mLastSentTouchTime; 427 428 /** 429 * The minimum elapsed time before sending another ACTION_MOVE event to 430 * WebViewCore. This really should be tuned for each type of the devices. 431 * For example in Google Map api test case, it takes Dream device at least 432 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 433 * triggering the layout and drawing the picture. While the same process 434 * takes 60+ms on the current high speed device. If we make 435 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 436 * to WebViewCore queue and the real layout and draw events will be pushed 437 * to further, which slows down the refresh rate. Choose 50 to favor the 438 * current high speed devices. For Dream like devices, 100 is a better 439 * choice. Maybe make this in the buildspec later. 440 */ 441 private static final int TOUCH_SENT_INTERVAL = 50; 442 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 443 444 /** 445 * Helper class to get velocity for fling 446 */ 447 VelocityTracker mVelocityTracker; 448 private int mMaximumFling; 449 private float mLastVelocity; 450 private float mLastVelX; 451 private float mLastVelY; 452 453 /** 454 * Touch mode 455 */ 456 private int mTouchMode = TOUCH_DONE_MODE; 457 private static final int TOUCH_INIT_MODE = 1; 458 private static final int TOUCH_DRAG_START_MODE = 2; 459 private static final int TOUCH_DRAG_MODE = 3; 460 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 461 private static final int TOUCH_SHORTPRESS_MODE = 5; 462 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 463 private static final int TOUCH_DONE_MODE = 7; 464 private static final int TOUCH_PINCH_DRAG = 8; 465 466 /** 467 * True if we have a touch panel capable of detecting smooth pan/scale at the same time 468 */ 469 private boolean mAllowPanAndScale; 470 471 // Whether to forward the touch events to WebCore 472 private boolean mForwardTouchEvents = false; 473 474 // Whether to prevent default during touch. The initial value depends on 475 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 476 // for touch down. Otherwise UI will wait for the answer of the first 477 // confirmed move before taking over the control. 478 private static final int PREVENT_DEFAULT_NO = 0; 479 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 480 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 481 private static final int PREVENT_DEFAULT_YES = 3; 482 private static final int PREVENT_DEFAULT_IGNORE = 4; 483 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 484 485 // true when the touch movement exceeds the slop 486 private boolean mConfirmMove; 487 488 // if true, touch events will be first processed by WebCore, if prevent 489 // default is not set, the UI will continue handle them. 490 private boolean mDeferTouchProcess; 491 492 // to avoid interfering with the current touch events, track them 493 // separately. Currently no snapping or fling in the deferred process mode 494 private int mDeferTouchMode = TOUCH_DONE_MODE; 495 private float mLastDeferTouchX; 496 private float mLastDeferTouchY; 497 498 // To keep track of whether the current drag was initiated by a WebTextView, 499 // so that we know not to hide the cursor 500 boolean mDragFromTextInput; 501 502 // Whether or not to draw the cursor ring. 503 private boolean mDrawCursorRing = true; 504 505 // true if onPause has been called (and not onResume) 506 private boolean mIsPaused; 507 508 // true if, during a transition to a new page, we're delaying 509 // deleting a root layer until there's something to draw of the new page. 510 private boolean mDelayedDeleteRootLayer; 511 512 /** 513 * Customizable constant 514 */ 515 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 516 private int mTouchSlopSquare; 517 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 518 private int mDoubleTapSlopSquare; 519 // pre-computed density adjusted navigation slop 520 private int mNavSlop; 521 // This should be ViewConfiguration.getTapTimeout() 522 // But system time out is 100ms, which is too short for the browser. 523 // In the browser, if it switches out of tap too soon, jump tap won't work. 524 private static final int TAP_TIMEOUT = 200; 525 // This should be ViewConfiguration.getLongPressTimeout() 526 // But system time out is 500ms, which is too short for the browser. 527 // With a short timeout, it's difficult to treat trigger a short press. 528 private static final int LONG_PRESS_TIMEOUT = 1000; 529 // needed to avoid flinging after a pause of no movement 530 private static final int MIN_FLING_TIME = 250; 531 // draw unfiltered after drag is held without movement 532 private static final int MOTIONLESS_TIME = 100; 533 // The time that the Zoom Controls are visible before fading away 534 private static final long ZOOM_CONTROLS_TIMEOUT = 535 ViewConfiguration.getZoomControlsTimeout(); 536 // The amount of content to overlap between two screens when going through 537 // pages with the space bar, in pixels. 538 private static final int PAGE_SCROLL_OVERLAP = 24; 539 540 /** 541 * These prevent calling requestLayout if either dimension is fixed. This 542 * depends on the layout parameters and the measure specs. 543 */ 544 boolean mWidthCanMeasure; 545 boolean mHeightCanMeasure; 546 547 // Remember the last dimensions we sent to the native side so we can avoid 548 // sending the same dimensions more than once. 549 int mLastWidthSent; 550 int mLastHeightSent; 551 552 private int mContentWidth; // cache of value from WebViewCore 553 private int mContentHeight; // cache of value from WebViewCore 554 555 // Need to have the separate control for horizontal and vertical scrollbar 556 // style than the View's single scrollbar style 557 private boolean mOverlayHorizontalScrollbar = true; 558 private boolean mOverlayVerticalScrollbar = false; 559 560 // our standard speed. this way small distances will be traversed in less 561 // time than large distances, but we cap the duration, so that very large 562 // distances won't take too long to get there. 563 private static final int STD_SPEED = 480; // pixels per second 564 // time for the longest scroll animation 565 private static final int MAX_DURATION = 750; // milliseconds 566 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 567 private OverScroller mScroller; 568 private boolean mInOverScrollMode = false; 569 private static Paint mOverScrollBackground; 570 private static Paint mOverScrollBorder; 571 572 private boolean mWrapContent; 573 private static final int MOTIONLESS_FALSE = 0; 574 private static final int MOTIONLESS_PENDING = 1; 575 private static final int MOTIONLESS_TRUE = 2; 576 private static final int MOTIONLESS_IGNORE = 3; 577 private int mHeldMotionless; 578 579 // whether support multi-touch 580 private boolean mSupportMultiTouch; 581 // use the framework's ScaleGestureDetector to handle multi-touch 582 private ScaleGestureDetector mScaleDetector; 583 584 // the anchor point in the document space where VIEW_SIZE_CHANGED should 585 // apply to 586 private int mAnchorX; 587 private int mAnchorY; 588 589 /* 590 * Private message ids 591 */ 592 private static final int REMEMBER_PASSWORD = 1; 593 private static final int NEVER_REMEMBER_PASSWORD = 2; 594 private static final int SWITCH_TO_SHORTPRESS = 3; 595 private static final int SWITCH_TO_LONGPRESS = 4; 596 private static final int RELEASE_SINGLE_TAP = 5; 597 private static final int REQUEST_FORM_DATA = 6; 598 private static final int RESUME_WEBCORE_PRIORITY = 7; 599 private static final int DRAG_HELD_MOTIONLESS = 8; 600 private static final int AWAKEN_SCROLL_BARS = 9; 601 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 602 603 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 604 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 605 606 /* 607 * Package message ids 608 */ 609 //! arg1=x, arg2=y 610 static final int SCROLL_TO_MSG_ID = 101; 611 static final int SCROLL_BY_MSG_ID = 102; 612 //! arg1=x, arg2=y 613 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 614 //! arg1=x, arg2=y 615 static final int SYNC_SCROLL_TO_MSG_ID = 104; 616 static final int NEW_PICTURE_MSG_ID = 105; 617 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 618 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 619 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 620 static final int UPDATE_ZOOM_RANGE = 109; 621 static final int MOVE_OUT_OF_PLUGIN = 110; 622 static final int CLEAR_TEXT_ENTRY = 111; 623 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 624 static final int SHOW_RECT_MSG_ID = 113; 625 static final int LONG_PRESS_CENTER = 114; 626 static final int PREVENT_TOUCH_ID = 115; 627 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 628 // obj=Rect in doc coordinates 629 static final int INVAL_RECT_MSG_ID = 117; 630 static final int REQUEST_KEYBOARD = 118; 631 static final int DO_MOTION_UP = 119; 632 static final int SHOW_FULLSCREEN = 120; 633 static final int HIDE_FULLSCREEN = 121; 634 static final int DOM_FOCUS_CHANGED = 122; 635 static final int IMMEDIATE_REPAINT_MSG_ID = 123; 636 static final int SET_ROOT_LAYER_MSG_ID = 124; 637 static final int RETURN_LABEL = 125; 638 static final int FIND_AGAIN = 126; 639 static final int CENTER_FIT_RECT = 127; 640 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 641 static final int SET_SCROLLBAR_MODES = 129; 642 643 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 644 private static final int LAST_PACKAGE_MSG_ID = SET_SCROLLBAR_MODES; 645 646 static final String[] HandlerPrivateDebugString = { 647 "REMEMBER_PASSWORD", // = 1; 648 "NEVER_REMEMBER_PASSWORD", // = 2; 649 "SWITCH_TO_SHORTPRESS", // = 3; 650 "SWITCH_TO_LONGPRESS", // = 4; 651 "RELEASE_SINGLE_TAP", // = 5; 652 "REQUEST_FORM_DATA", // = 6; 653 "RESUME_WEBCORE_PRIORITY", // = 7; 654 "DRAG_HELD_MOTIONLESS", // = 8; 655 "AWAKEN_SCROLL_BARS", // = 9; 656 "PREVENT_DEFAULT_TIMEOUT" // = 10; 657 }; 658 659 static final String[] HandlerPackageDebugString = { 660 "SCROLL_TO_MSG_ID", // = 101; 661 "SCROLL_BY_MSG_ID", // = 102; 662 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 663 "SYNC_SCROLL_TO_MSG_ID", // = 104; 664 "NEW_PICTURE_MSG_ID", // = 105; 665 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 666 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 667 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 668 "UPDATE_ZOOM_RANGE", // = 109; 669 "MOVE_OUT_OF_PLUGIN", // = 110; 670 "CLEAR_TEXT_ENTRY", // = 111; 671 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 672 "SHOW_RECT_MSG_ID", // = 113; 673 "LONG_PRESS_CENTER", // = 114; 674 "PREVENT_TOUCH_ID", // = 115; 675 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 676 "INVAL_RECT_MSG_ID", // = 117; 677 "REQUEST_KEYBOARD", // = 118; 678 "DO_MOTION_UP", // = 119; 679 "SHOW_FULLSCREEN", // = 120; 680 "HIDE_FULLSCREEN", // = 121; 681 "DOM_FOCUS_CHANGED", // = 122; 682 "IMMEDIATE_REPAINT_MSG_ID", // = 123; 683 "SET_ROOT_LAYER_MSG_ID", // = 124; 684 "RETURN_LABEL", // = 125; 685 "FIND_AGAIN", // = 126; 686 "CENTER_FIT_RECT", // = 127; 687 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 688 "SET_SCROLLBAR_MODES" // = 129; 689 }; 690 691 // If the site doesn't use the viewport meta tag to specify the viewport, 692 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 693 static final int DEFAULT_VIEWPORT_WIDTH = 800; 694 695 // normally we try to fit the content to the minimum preferred width 696 // calculated by the Webkit. To avoid the bad behavior when some site's 697 // minimum preferred width keeps growing when changing the viewport width or 698 // the minimum preferred width is huge, an upper limit is needed. 699 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 700 701 // default scale limit. Depending on the display density 702 private static float DEFAULT_MAX_ZOOM_SCALE; 703 private static float DEFAULT_MIN_ZOOM_SCALE; 704 // scale limit, which can be set through viewport meta tag in the web page 705 private float mMaxZoomScale; 706 private float mMinZoomScale; 707 private boolean mMinZoomScaleFixed = true; 708 709 // initial scale in percent. 0 means using default. 710 private int mInitialScaleInPercent = 0; 711 712 // while in the zoom overview mode, the page's width is fully fit to the 713 // current window. The page is alive, in another words, you can click to 714 // follow the links. Double tap will toggle between zoom overview mode and 715 // the last zoom scale. 716 boolean mInZoomOverview = false; 717 718 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 719 // engadget always have wider mContentWidth no matter what viewport size is. 720 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 721 float mTextWrapScale; 722 723 // default scale. Depending on the display density. 724 static int DEFAULT_SCALE_PERCENT; 725 private float mDefaultScale; 726 727 private static float MINIMUM_SCALE_INCREMENT = 0.01f; 728 729 // set to true temporarily during ScaleGesture triggered zoom 730 private boolean mPreviewZoomOnly = false; 731 732 // computed scale and inverse, from mZoomWidth. 733 private float mActualScale; 734 private float mInvActualScale; 735 // if this is non-zero, it is used on drawing rather than mActualScale 736 private float mZoomScale; 737 private float mInvInitialZoomScale; 738 private float mInvFinalZoomScale; 739 private int mInitialScrollX; 740 private int mInitialScrollY; 741 private long mZoomStart; 742 private static final int ZOOM_ANIMATION_LENGTH = 500; 743 744 private boolean mUserScroll = false; 745 746 private int mSnapScrollMode = SNAP_NONE; 747 private static final int SNAP_NONE = 0; 748 private static final int SNAP_LOCK = 1; // not a separate state 749 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 750 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 751 private boolean mSnapPositive; 752 753 // keep these in sync with their counterparts in WebView.cpp 754 private static final int DRAW_EXTRAS_NONE = 0; 755 private static final int DRAW_EXTRAS_FIND = 1; 756 private static final int DRAW_EXTRAS_SELECTION = 2; 757 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 758 759 // keep this in sync with WebCore:ScrollbarMode in WebKit 760 private static final int SCROLLBAR_AUTO = 0; 761 private static final int SCROLLBAR_ALWAYSOFF = 1; 762 // as we auto fade scrollbar, this is ignored. 763 private static final int SCROLLBAR_ALWAYSON = 2; 764 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 765 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 766 767 /** 768 * Max distance to overscroll by in pixels. 769 * This how far content can be pulled beyond its normal bounds by the user. 770 */ 771 private int mOverscrollDistance; 772 773 /** 774 * Max distance to overfling by in pixels. 775 * This is how far flinged content can move beyond the end of its normal bounds. 776 */ 777 private int mOverflingDistance; 778 779 /* 780 * These manage the edge glow effect when flung or pulled beyond the edges. 781 * If one is not null, all are not null. Checking one for null is as good as checking each. 782 */ 783 private EdgeGlow mEdgeGlowTop; 784 private EdgeGlow mEdgeGlowBottom; 785 private EdgeGlow mEdgeGlowLeft; 786 private EdgeGlow mEdgeGlowRight; 787 788 // Used to match key downs and key ups 789 private boolean mGotKeyDown; 790 791 /* package */ static boolean mLogEvent = true; 792 793 // for event log 794 private long mLastTouchUpTime = 0; 795 796 /** 797 * URI scheme for telephone number 798 */ 799 public static final String SCHEME_TEL = "tel:"; 800 /** 801 * URI scheme for email address 802 */ 803 public static final String SCHEME_MAILTO = "mailto:"; 804 /** 805 * URI scheme for map address 806 */ 807 public static final String SCHEME_GEO = "geo:0,0?q="; 808 809 private int mBackgroundColor = Color.WHITE; 810 811 // Used to notify listeners of a new picture. 812 private PictureListener mPictureListener; 813 /** 814 * Interface to listen for new pictures as they change. 815 */ 816 public interface PictureListener { 817 /** 818 * Notify the listener that the picture has changed. 819 * @param view The WebView that owns the picture. 820 * @param picture The new picture. 821 */ 822 public void onNewPicture(WebView view, Picture picture); 823 } 824 825 // FIXME: Want to make this public, but need to change the API file. 826 public /*static*/ class HitTestResult { 827 /** 828 * Default HitTestResult, where the target is unknown 829 */ 830 public static final int UNKNOWN_TYPE = 0; 831 /** 832 * HitTestResult for hitting a HTML::a tag 833 */ 834 public static final int ANCHOR_TYPE = 1; 835 /** 836 * HitTestResult for hitting a phone number 837 */ 838 public static final int PHONE_TYPE = 2; 839 /** 840 * HitTestResult for hitting a map address 841 */ 842 public static final int GEO_TYPE = 3; 843 /** 844 * HitTestResult for hitting an email address 845 */ 846 public static final int EMAIL_TYPE = 4; 847 /** 848 * HitTestResult for hitting an HTML::img tag 849 */ 850 public static final int IMAGE_TYPE = 5; 851 /** 852 * HitTestResult for hitting a HTML::a tag which contains HTML::img 853 */ 854 public static final int IMAGE_ANCHOR_TYPE = 6; 855 /** 856 * HitTestResult for hitting a HTML::a tag with src=http 857 */ 858 public static final int SRC_ANCHOR_TYPE = 7; 859 /** 860 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 861 */ 862 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 863 /** 864 * HitTestResult for hitting an edit text area 865 */ 866 public static final int EDIT_TEXT_TYPE = 9; 867 868 private int mType; 869 private String mExtra; 870 871 HitTestResult() { 872 mType = UNKNOWN_TYPE; 873 } 874 875 private void setType(int type) { 876 mType = type; 877 } 878 879 private void setExtra(String extra) { 880 mExtra = extra; 881 } 882 883 public int getType() { 884 return mType; 885 } 886 887 public String getExtra() { 888 return mExtra; 889 } 890 } 891 892 // The View containing the zoom controls 893 private ExtendedZoomControls mZoomControls; 894 private Runnable mZoomControlRunnable; 895 896 // mZoomButtonsController will be lazy initialized in 897 // getZoomButtonsController() to get better performance. 898 private ZoomButtonsController mZoomButtonsController; 899 900 // These keep track of the center point of the zoom. They are used to 901 // determine the point around which we should zoom. 902 private float mZoomCenterX; 903 private float mZoomCenterY; 904 905 private ZoomButtonsController.OnZoomListener mZoomListener = 906 new ZoomButtonsController.OnZoomListener() { 907 908 public void onVisibilityChanged(boolean visible) { 909 if (visible) { 910 switchOutDrawHistory(); 911 // Bring back the hidden zoom controls. 912 mZoomButtonsController.getZoomControls().setVisibility( 913 View.VISIBLE); 914 updateZoomButtonsEnabled(); 915 } 916 } 917 918 public void onZoom(boolean zoomIn) { 919 if (zoomIn) { 920 zoomIn(); 921 } else { 922 zoomOut(); 923 } 924 925 updateZoomButtonsEnabled(); 926 } 927 }; 928 929 /** 930 * Construct a new WebView with a Context object. 931 * @param context A Context object used to access application assets. 932 */ 933 public WebView(Context context) { 934 this(context, null); 935 } 936 937 /** 938 * Construct a new WebView with layout parameters. 939 * @param context A Context object used to access application assets. 940 * @param attrs An AttributeSet passed to our parent. 941 */ 942 public WebView(Context context, AttributeSet attrs) { 943 this(context, attrs, com.android.internal.R.attr.webViewStyle); 944 } 945 946 /** 947 * Construct a new WebView with layout parameters and a default style. 948 * @param context A Context object used to access application assets. 949 * @param attrs An AttributeSet passed to our parent. 950 * @param defStyle The default style resource ID. 951 */ 952 public WebView(Context context, AttributeSet attrs, int defStyle) { 953 this(context, attrs, defStyle, null); 954 } 955 956 /** 957 * Construct a new WebView with layout parameters, a default style and a set 958 * of custom Javscript interfaces to be added to the WebView at initialization 959 * time. This guarantees that these interfaces will be available when the JS 960 * context is initialized. 961 * @param context A Context object used to access application assets. 962 * @param attrs An AttributeSet passed to our parent. 963 * @param defStyle The default style resource ID. 964 * @param javascriptInterfaces is a Map of intareface names, as keys, and 965 * object implementing those interfaces, as values. 966 * @hide pending API council approval. 967 */ 968 protected WebView(Context context, AttributeSet attrs, int defStyle, 969 Map<String, Object> javascriptInterfaces) { 970 super(context, attrs, defStyle); 971 init(); 972 973 mCallbackProxy = new CallbackProxy(context, this); 974 mViewManager = new ViewManager(this); 975 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 976 mDatabase = WebViewDatabase.getInstance(context); 977 mScroller = new OverScroller(context); 978 979 updateMultiTouchSupport(context); 980 } 981 982 void updateMultiTouchSupport(Context context) { 983 WebSettings settings = getSettings(); 984 final PackageManager pm = context.getPackageManager(); 985 mSupportMultiTouch = pm.hasSystemFeature(PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 986 && settings.supportZoom() && settings.getBuiltInZoomControls(); 987 mAllowPanAndScale = pm.hasSystemFeature( 988 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT); 989 if (mSupportMultiTouch && (mScaleDetector == null)) { 990 mScaleDetector = new ScaleGestureDetector(context, 991 new ScaleDetectorListener()); 992 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 993 mScaleDetector = null; 994 } 995 } 996 997 private void updateZoomButtonsEnabled() { 998 if (mZoomButtonsController == null) return; 999 boolean canZoomIn = mActualScale < mMaxZoomScale; 1000 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 1001 if (!canZoomIn && !canZoomOut) { 1002 // Hide the zoom in and out buttons, as well as the fit to page 1003 // button, if the page cannot zoom 1004 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 1005 } else { 1006 // Set each one individually, as a page may be able to zoom in 1007 // or out. 1008 mZoomButtonsController.setZoomInEnabled(canZoomIn); 1009 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 1010 } 1011 } 1012 1013 private void init() { 1014 setWillNotDraw(false); 1015 setFocusable(true); 1016 setFocusableInTouchMode(true); 1017 setClickable(true); 1018 setLongClickable(true); 1019 1020 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1021 int slop = configuration.getScaledTouchSlop(); 1022 mTouchSlopSquare = slop * slop; 1023 mMinLockSnapReverseDistance = slop; 1024 slop = configuration.getScaledDoubleTapSlop(); 1025 mDoubleTapSlopSquare = slop * slop; 1026 final float density = getContext().getResources().getDisplayMetrics().density; 1027 // use one line height, 16 based on our current default font, for how 1028 // far we allow a touch be away from the edge of a link 1029 mNavSlop = (int) (16 * density); 1030 // density adjusted scale factors 1031 DEFAULT_SCALE_PERCENT = (int) (100 * density); 1032 mDefaultScale = density; 1033 mActualScale = density; 1034 mInvActualScale = 1 / density; 1035 mTextWrapScale = density; 1036 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 1037 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 1038 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 1039 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 1040 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1041 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1042 mOverflingDistance = configuration.getScaledOverflingDistance(); 1043 } 1044 1045 @Override 1046 public void setOverscrollMode(int mode) { 1047 super.setOverscrollMode(mode); 1048 if (mode != OVERSCROLL_NEVER) { 1049 if (mEdgeGlowTop == null) { 1050 final Resources res = getContext().getResources(); 1051 final Drawable edge = res.getDrawable(R.drawable.overscroll_edge); 1052 final Drawable glow = res.getDrawable(R.drawable.overscroll_glow); 1053 mEdgeGlowTop = new EdgeGlow(edge, glow); 1054 mEdgeGlowBottom = new EdgeGlow(edge, glow); 1055 mEdgeGlowLeft = new EdgeGlow(edge, glow); 1056 mEdgeGlowRight = new EdgeGlow(edge, glow); 1057 } 1058 } else { 1059 mEdgeGlowTop = null; 1060 mEdgeGlowBottom = null; 1061 mEdgeGlowLeft = null; 1062 mEdgeGlowRight = null; 1063 } 1064 } 1065 1066 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1067 final float density = getContext().getResources().getDisplayMetrics().density 1068 * 100 / zoomDensity; 1069 if (Math.abs(density - mDefaultScale) > 0.01) { 1070 float scaleFactor = density / mDefaultScale; 1071 // adjust the limits 1072 mNavSlop = (int) (16 * density); 1073 DEFAULT_SCALE_PERCENT = (int) (100 * density); 1074 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 1075 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 1076 mDefaultScale = density; 1077 mMaxZoomScale *= scaleFactor; 1078 mMinZoomScale *= scaleFactor; 1079 setNewZoomScale(mActualScale * scaleFactor, true, false); 1080 } 1081 } 1082 1083 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1084 String password, final Message resumeMsg) { 1085 boolean rVal = false; 1086 if (resumeMsg == null) { 1087 // null resumeMsg implies saving password silently 1088 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1089 } else { 1090 final Message remember = mPrivateHandler.obtainMessage( 1091 REMEMBER_PASSWORD); 1092 remember.getData().putString("host", schemePlusHost); 1093 remember.getData().putString("username", username); 1094 remember.getData().putString("password", password); 1095 remember.obj = resumeMsg; 1096 1097 final Message neverRemember = mPrivateHandler.obtainMessage( 1098 NEVER_REMEMBER_PASSWORD); 1099 neverRemember.getData().putString("host", schemePlusHost); 1100 neverRemember.getData().putString("username", username); 1101 neverRemember.getData().putString("password", password); 1102 neverRemember.obj = resumeMsg; 1103 1104 new AlertDialog.Builder(getContext()) 1105 .setTitle(com.android.internal.R.string.save_password_label) 1106 .setMessage(com.android.internal.R.string.save_password_message) 1107 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1108 new DialogInterface.OnClickListener() { 1109 public void onClick(DialogInterface dialog, int which) { 1110 resumeMsg.sendToTarget(); 1111 } 1112 }) 1113 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1114 new DialogInterface.OnClickListener() { 1115 public void onClick(DialogInterface dialog, int which) { 1116 remember.sendToTarget(); 1117 } 1118 }) 1119 .setNegativeButton(com.android.internal.R.string.save_password_never, 1120 new DialogInterface.OnClickListener() { 1121 public void onClick(DialogInterface dialog, int which) { 1122 neverRemember.sendToTarget(); 1123 } 1124 }) 1125 .setOnCancelListener(new OnCancelListener() { 1126 public void onCancel(DialogInterface dialog) { 1127 resumeMsg.sendToTarget(); 1128 } 1129 }).show(); 1130 // Return true so that WebViewCore will pause while the dialog is 1131 // up. 1132 rVal = true; 1133 } 1134 return rVal; 1135 } 1136 1137 @Override 1138 public void setScrollBarStyle(int style) { 1139 if (style == View.SCROLLBARS_INSIDE_INSET 1140 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1141 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1142 } else { 1143 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1144 } 1145 super.setScrollBarStyle(style); 1146 } 1147 1148 /** 1149 * Specify whether the horizontal scrollbar has overlay style. 1150 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1151 */ 1152 public void setHorizontalScrollbarOverlay(boolean overlay) { 1153 mOverlayHorizontalScrollbar = overlay; 1154 } 1155 1156 /** 1157 * Specify whether the vertical scrollbar has overlay style. 1158 * @param overlay TRUE if vertical scrollbar should have overlay style. 1159 */ 1160 public void setVerticalScrollbarOverlay(boolean overlay) { 1161 mOverlayVerticalScrollbar = overlay; 1162 } 1163 1164 /** 1165 * Return whether horizontal scrollbar has overlay style 1166 * @return TRUE if horizontal scrollbar has overlay style. 1167 */ 1168 public boolean overlayHorizontalScrollbar() { 1169 return mOverlayHorizontalScrollbar; 1170 } 1171 1172 /** 1173 * Return whether vertical scrollbar has overlay style 1174 * @return TRUE if vertical scrollbar has overlay style. 1175 */ 1176 public boolean overlayVerticalScrollbar() { 1177 return mOverlayVerticalScrollbar; 1178 } 1179 1180 /* 1181 * Return the width of the view where the content of WebView should render 1182 * to. 1183 * Note: this can be called from WebCoreThread. 1184 */ 1185 /* package */ int getViewWidth() { 1186 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1187 return getWidth(); 1188 } else { 1189 return getWidth() - getVerticalScrollbarWidth(); 1190 } 1191 } 1192 1193 /* 1194 * returns the height of the titlebarview (if any). Does not care about 1195 * scrolling 1196 */ 1197 private int getTitleHeight() { 1198 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1199 } 1200 1201 /* 1202 * Return the amount of the titlebarview (if any) that is visible 1203 */ 1204 private int getVisibleTitleHeight() { 1205 // need to restrict mScrollY due to over scroll 1206 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1207 } 1208 1209 /* 1210 * Return the height of the view where the content of WebView should render 1211 * to. Note that this excludes mTitleBar, if there is one. 1212 * Note: this can be called from WebCoreThread. 1213 */ 1214 /* package */ int getViewHeight() { 1215 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1216 } 1217 1218 private int getViewHeightWithTitle() { 1219 int height = getHeight(); 1220 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1221 height -= getHorizontalScrollbarHeight(); 1222 } 1223 return height; 1224 } 1225 1226 /** 1227 * @return The SSL certificate for the main top-level page or null if 1228 * there is no certificate (the site is not secure). 1229 */ 1230 public SslCertificate getCertificate() { 1231 return mCertificate; 1232 } 1233 1234 /** 1235 * Sets the SSL certificate for the main top-level page. 1236 */ 1237 public void setCertificate(SslCertificate certificate) { 1238 if (DebugFlags.WEB_VIEW) { 1239 Log.v(LOGTAG, "setCertificate=" + certificate); 1240 } 1241 // here, the certificate can be null (if the site is not secure) 1242 mCertificate = certificate; 1243 } 1244 1245 //------------------------------------------------------------------------- 1246 // Methods called by activity 1247 //------------------------------------------------------------------------- 1248 1249 /** 1250 * Save the username and password for a particular host in the WebView's 1251 * internal database. 1252 * @param host The host that required the credentials. 1253 * @param username The username for the given host. 1254 * @param password The password for the given host. 1255 */ 1256 public void savePassword(String host, String username, String password) { 1257 mDatabase.setUsernamePassword(host, username, password); 1258 } 1259 1260 /** 1261 * Set the HTTP authentication credentials for a given host and realm. 1262 * 1263 * @param host The host for the credentials. 1264 * @param realm The realm for the credentials. 1265 * @param username The username for the password. If it is null, it means 1266 * password can't be saved. 1267 * @param password The password 1268 */ 1269 public void setHttpAuthUsernamePassword(String host, String realm, 1270 String username, String password) { 1271 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1272 } 1273 1274 /** 1275 * Retrieve the HTTP authentication username and password for a given 1276 * host & realm pair 1277 * 1278 * @param host The host for which the credentials apply. 1279 * @param realm The realm for which the credentials apply. 1280 * @return String[] if found, String[0] is username, which can be null and 1281 * String[1] is password. Return null if it can't find anything. 1282 */ 1283 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1284 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1285 } 1286 1287 private void clearHelpers() { 1288 clearTextEntry(false); 1289 selectionDone(); 1290 } 1291 1292 /** 1293 * Destroy the internal state of the WebView. This method should be called 1294 * after the WebView has been removed from the view system. No other 1295 * methods may be called on a WebView after destroy. 1296 */ 1297 public void destroy() { 1298 clearHelpers(); 1299 if (mWebViewCore != null) { 1300 // Set the handlers to null before destroying WebViewCore so no 1301 // more messages will be posted. 1302 mCallbackProxy.setWebViewClient(null); 1303 mCallbackProxy.setWebChromeClient(null); 1304 // Tell WebViewCore to destroy itself 1305 synchronized (this) { 1306 WebViewCore webViewCore = mWebViewCore; 1307 mWebViewCore = null; // prevent using partial webViewCore 1308 webViewCore.destroy(); 1309 } 1310 // Remove any pending messages that might not be serviced yet. 1311 mPrivateHandler.removeCallbacksAndMessages(null); 1312 mCallbackProxy.removeCallbacksAndMessages(null); 1313 // Wake up the WebCore thread just in case it is waiting for a 1314 // javascript dialog. 1315 synchronized (mCallbackProxy) { 1316 mCallbackProxy.notify(); 1317 } 1318 } 1319 if (mNativeClass != 0) { 1320 nativeDestroy(); 1321 mNativeClass = 0; 1322 } 1323 } 1324 1325 /** 1326 * Enables platform notifications of data state and proxy changes. 1327 */ 1328 public static void enablePlatformNotifications() { 1329 Network.enablePlatformNotifications(); 1330 } 1331 1332 /** 1333 * If platform notifications are enabled, this should be called 1334 * from the Activity's onPause() or onStop(). 1335 */ 1336 public static void disablePlatformNotifications() { 1337 Network.disablePlatformNotifications(); 1338 } 1339 1340 /** 1341 * Sets JavaScript engine flags. 1342 * 1343 * @param flags JS engine flags in a String 1344 * 1345 * @hide pending API solidification 1346 */ 1347 public void setJsFlags(String flags) { 1348 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1349 } 1350 1351 /** 1352 * Inform WebView of the network state. This is used to set 1353 * the javascript property window.navigator.isOnline and 1354 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1355 * @param networkUp boolean indicating if network is available 1356 */ 1357 public void setNetworkAvailable(boolean networkUp) { 1358 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1359 networkUp ? 1 : 0, 0); 1360 } 1361 1362 /** 1363 * Inform WebView about the current network type. 1364 * {@hide} 1365 */ 1366 public void setNetworkType(String type, String subtype) { 1367 Map<String, String> map = new HashMap<String, String>(); 1368 map.put("type", type); 1369 map.put("subtype", subtype); 1370 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1371 } 1372 /** 1373 * Save the state of this WebView used in 1374 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1375 * method no longer stores the display data for this WebView. The previous 1376 * behavior could potentially leak files if {@link #restoreState} was never 1377 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1378 * and restoring the display data. 1379 * @param outState The Bundle to store the WebView state. 1380 * @return The same copy of the back/forward list used to save the state. If 1381 * saveState fails, the returned list will be null. 1382 * @see #savePicture 1383 * @see #restorePicture 1384 */ 1385 public WebBackForwardList saveState(Bundle outState) { 1386 if (outState == null) { 1387 return null; 1388 } 1389 // We grab a copy of the back/forward list because a client of WebView 1390 // may have invalidated the history list by calling clearHistory. 1391 WebBackForwardList list = copyBackForwardList(); 1392 final int currentIndex = list.getCurrentIndex(); 1393 final int size = list.getSize(); 1394 // We should fail saving the state if the list is empty or the index is 1395 // not in a valid range. 1396 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1397 return null; 1398 } 1399 outState.putInt("index", currentIndex); 1400 // FIXME: This should just be a byte[][] instead of ArrayList but 1401 // Parcel.java does not have the code to handle multi-dimensional 1402 // arrays. 1403 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1404 for (int i = 0; i < size; i++) { 1405 WebHistoryItem item = list.getItemAtIndex(i); 1406 if (null == item) { 1407 // FIXME: this shouldn't happen 1408 // need to determine how item got set to null 1409 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1410 return null; 1411 } 1412 byte[] data = item.getFlattenedData(); 1413 if (data == null) { 1414 // It would be very odd to not have any data for a given history 1415 // item. And we will fail to rebuild the history list without 1416 // flattened data. 1417 return null; 1418 } 1419 history.add(data); 1420 } 1421 outState.putSerializable("history", history); 1422 if (mCertificate != null) { 1423 outState.putBundle("certificate", 1424 SslCertificate.saveState(mCertificate)); 1425 } 1426 return list; 1427 } 1428 1429 /** 1430 * Save the current display data to the Bundle given. Used in conjunction 1431 * with {@link #saveState}. 1432 * @param b A Bundle to store the display data. 1433 * @param dest The file to store the serialized picture data. Will be 1434 * overwritten with this WebView's picture data. 1435 * @return True if the picture was successfully saved. 1436 */ 1437 public boolean savePicture(Bundle b, final File dest) { 1438 if (dest == null || b == null) { 1439 return false; 1440 } 1441 final Picture p = capturePicture(); 1442 // Use a temporary file while writing to ensure the destination file 1443 // contains valid data. 1444 final File temp = new File(dest.getPath() + ".writing"); 1445 new Thread(new Runnable() { 1446 public void run() { 1447 FileOutputStream out = null; 1448 try { 1449 out = new FileOutputStream(temp); 1450 p.writeToStream(out); 1451 // Writing the picture succeeded, rename the temporary file 1452 // to the destination. 1453 temp.renameTo(dest); 1454 } catch (Exception e) { 1455 // too late to do anything about it. 1456 } finally { 1457 if (out != null) { 1458 try { 1459 out.close(); 1460 } catch (Exception e) { 1461 // Can't do anything about that 1462 } 1463 } 1464 temp.delete(); 1465 } 1466 } 1467 }).start(); 1468 // now update the bundle 1469 b.putInt("scrollX", mScrollX); 1470 b.putInt("scrollY", mScrollY); 1471 b.putFloat("scale", mActualScale); 1472 b.putFloat("textwrapScale", mTextWrapScale); 1473 b.putBoolean("overview", mInZoomOverview); 1474 return true; 1475 } 1476 1477 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1478 int sx = b.getInt("scrollX", 0); 1479 int sy = b.getInt("scrollY", 0); 1480 float scale = b.getFloat("scale", 1.0f); 1481 mDrawHistory = true; 1482 mHistoryPicture = p; 1483 mScrollX = sx; 1484 mScrollY = sy; 1485 mHistoryWidth = Math.round(p.getWidth() * scale); 1486 mHistoryHeight = Math.round(p.getHeight() * scale); 1487 // as getWidth() / getHeight() of the view are not available yet, set up 1488 // mActualScale, so that when onSizeChanged() is called, the rest will 1489 // be set correctly 1490 mActualScale = scale; 1491 mInvActualScale = 1 / scale; 1492 mTextWrapScale = b.getFloat("textwrapScale", scale); 1493 mInZoomOverview = b.getBoolean("overview"); 1494 invalidate(); 1495 } 1496 1497 /** 1498 * Restore the display data that was save in {@link #savePicture}. Used in 1499 * conjunction with {@link #restoreState}. 1500 * @param b A Bundle containing the saved display data. 1501 * @param src The file where the picture data was stored. 1502 * @return True if the picture was successfully restored. 1503 */ 1504 public boolean restorePicture(Bundle b, File src) { 1505 if (src == null || b == null) { 1506 return false; 1507 } 1508 if (!src.exists()) { 1509 return false; 1510 } 1511 try { 1512 final FileInputStream in = new FileInputStream(src); 1513 final Bundle copy = new Bundle(b); 1514 new Thread(new Runnable() { 1515 public void run() { 1516 try { 1517 final Picture p = Picture.createFromStream(in); 1518 if (p != null) { 1519 // Post a runnable on the main thread to update the 1520 // history picture fields. 1521 mPrivateHandler.post(new Runnable() { 1522 public void run() { 1523 restoreHistoryPictureFields(p, copy); 1524 } 1525 }); 1526 } 1527 } finally { 1528 try { 1529 in.close(); 1530 } catch (Exception e) { 1531 // Nothing we can do now. 1532 } 1533 } 1534 } 1535 }).start(); 1536 } catch (FileNotFoundException e){ 1537 e.printStackTrace(); 1538 } 1539 return true; 1540 } 1541 1542 /** 1543 * Restore the state of this WebView from the given map used in 1544 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1545 * be called to restore the state of the WebView before using the object. If 1546 * it is called after the WebView has had a chance to build state (load 1547 * pages, create a back/forward list, etc.) there may be undesirable 1548 * side-effects. Please note that this method no longer restores the 1549 * display data for this WebView. See {@link #savePicture} and {@link 1550 * #restorePicture} for saving and restoring the display data. 1551 * @param inState The incoming Bundle of state. 1552 * @return The restored back/forward list or null if restoreState failed. 1553 * @see #savePicture 1554 * @see #restorePicture 1555 */ 1556 public WebBackForwardList restoreState(Bundle inState) { 1557 WebBackForwardList returnList = null; 1558 if (inState == null) { 1559 return returnList; 1560 } 1561 if (inState.containsKey("index") && inState.containsKey("history")) { 1562 mCertificate = SslCertificate.restoreState( 1563 inState.getBundle("certificate")); 1564 1565 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1566 final int index = inState.getInt("index"); 1567 // We can't use a clone of the list because we need to modify the 1568 // shared copy, so synchronize instead to prevent concurrent 1569 // modifications. 1570 synchronized (list) { 1571 final List<byte[]> history = 1572 (List<byte[]>) inState.getSerializable("history"); 1573 final int size = history.size(); 1574 // Check the index bounds so we don't crash in native code while 1575 // restoring the history index. 1576 if (index < 0 || index >= size) { 1577 return null; 1578 } 1579 for (int i = 0; i < size; i++) { 1580 byte[] data = history.remove(0); 1581 if (data == null) { 1582 // If we somehow have null data, we cannot reconstruct 1583 // the item and thus our history list cannot be rebuilt. 1584 return null; 1585 } 1586 WebHistoryItem item = new WebHistoryItem(data); 1587 list.addHistoryItem(item); 1588 } 1589 // Grab the most recent copy to return to the caller. 1590 returnList = copyBackForwardList(); 1591 // Update the copy to have the correct index. 1592 returnList.setCurrentIndex(index); 1593 } 1594 // Remove all pending messages because we are restoring previous 1595 // state. 1596 mWebViewCore.removeMessages(); 1597 // Send a restore state message. 1598 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1599 } 1600 return returnList; 1601 } 1602 1603 /** 1604 * Load the given url with the extra headers. 1605 * @param url The url of the resource to load. 1606 * @param extraHeaders The extra headers sent with this url. This should not 1607 * include the common headers like "user-agent". If it does, it 1608 * will be replaced by the intrinsic value of the WebView. 1609 */ 1610 public void loadUrl(String url, Map<String, String> extraHeaders) { 1611 switchOutDrawHistory(); 1612 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1613 arg.mUrl = url; 1614 arg.mExtraHeaders = extraHeaders; 1615 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1616 clearHelpers(); 1617 } 1618 1619 /** 1620 * Load the given url. 1621 * @param url The url of the resource to load. 1622 */ 1623 public void loadUrl(String url) { 1624 if (url == null) { 1625 return; 1626 } 1627 loadUrl(url, null); 1628 } 1629 1630 /** 1631 * Load the url with postData using "POST" method into the WebView. If url 1632 * is not a network url, it will be loaded with {link 1633 * {@link #loadUrl(String)} instead. 1634 * 1635 * @param url The url of the resource to load. 1636 * @param postData The data will be passed to "POST" request. 1637 */ 1638 public void postUrl(String url, byte[] postData) { 1639 if (URLUtil.isNetworkUrl(url)) { 1640 switchOutDrawHistory(); 1641 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1642 arg.mUrl = url; 1643 arg.mPostData = postData; 1644 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1645 clearHelpers(); 1646 } else { 1647 loadUrl(url); 1648 } 1649 } 1650 1651 /** 1652 * Load the given data into the WebView. This will load the data into 1653 * WebView using the data: scheme. Content loaded through this mechanism 1654 * does not have the ability to load content from the network. 1655 * @param data A String of data in the given encoding. The date must 1656 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1657 * %27, %3f respectively. 1658 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1659 * @param encoding The encoding of the data. i.e. utf-8, base64 1660 */ 1661 public void loadData(String data, String mimeType, String encoding) { 1662 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1663 } 1664 1665 /** 1666 * Load the given data into the WebView, use the provided URL as the base 1667 * URL for the content. The base URL is the URL that represents the page 1668 * that is loaded through this interface. As such, it is used to resolve any 1669 * relative URLs. The historyUrl is used for the history entry. 1670 * <p> 1671 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1672 * files through "file:///android_asset/" for the sub resources is more 1673 * restricted. If you provide null or empty string as baseUrl, you won't be 1674 * able to access asset files. If the baseUrl is anything other than 1675 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1676 * sub resources. 1677 * 1678 * @param baseUrl Url to resolve relative paths with, if null defaults to 1679 * "about:blank" 1680 * @param data A String of data in the given encoding. 1681 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1682 * defaults to "text/html" 1683 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1684 * @param historyUrl URL to use as the history entry. Can be null. 1685 */ 1686 public void loadDataWithBaseURL(String baseUrl, String data, 1687 String mimeType, String encoding, String historyUrl) { 1688 1689 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1690 loadData(data, mimeType, encoding); 1691 return; 1692 } 1693 switchOutDrawHistory(); 1694 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1695 arg.mBaseUrl = baseUrl; 1696 arg.mData = data; 1697 arg.mMimeType = mimeType; 1698 arg.mEncoding = encoding; 1699 arg.mHistoryUrl = historyUrl; 1700 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1701 clearHelpers(); 1702 } 1703 1704 /** 1705 * Stop the current load. 1706 */ 1707 public void stopLoading() { 1708 // TODO: should we clear all the messages in the queue before sending 1709 // STOP_LOADING? 1710 switchOutDrawHistory(); 1711 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1712 } 1713 1714 /** 1715 * Reload the current url. 1716 */ 1717 public void reload() { 1718 clearHelpers(); 1719 switchOutDrawHistory(); 1720 mWebViewCore.sendMessage(EventHub.RELOAD); 1721 } 1722 1723 /** 1724 * Return true if this WebView has a back history item. 1725 * @return True iff this WebView has a back history item. 1726 */ 1727 public boolean canGoBack() { 1728 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1729 synchronized (l) { 1730 if (l.getClearPending()) { 1731 return false; 1732 } else { 1733 return l.getCurrentIndex() > 0; 1734 } 1735 } 1736 } 1737 1738 /** 1739 * Go back in the history of this WebView. 1740 */ 1741 public void goBack() { 1742 goBackOrForward(-1); 1743 } 1744 1745 /** 1746 * Return true if this WebView has a forward history item. 1747 * @return True iff this Webview has a forward history item. 1748 */ 1749 public boolean canGoForward() { 1750 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1751 synchronized (l) { 1752 if (l.getClearPending()) { 1753 return false; 1754 } else { 1755 return l.getCurrentIndex() < l.getSize() - 1; 1756 } 1757 } 1758 } 1759 1760 /** 1761 * Go forward in the history of this WebView. 1762 */ 1763 public void goForward() { 1764 goBackOrForward(1); 1765 } 1766 1767 /** 1768 * Return true if the page can go back or forward the given 1769 * number of steps. 1770 * @param steps The negative or positive number of steps to move the 1771 * history. 1772 */ 1773 public boolean canGoBackOrForward(int steps) { 1774 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1775 synchronized (l) { 1776 if (l.getClearPending()) { 1777 return false; 1778 } else { 1779 int newIndex = l.getCurrentIndex() + steps; 1780 return newIndex >= 0 && newIndex < l.getSize(); 1781 } 1782 } 1783 } 1784 1785 /** 1786 * Go to the history item that is the number of steps away from 1787 * the current item. Steps is negative if backward and positive 1788 * if forward. 1789 * @param steps The number of steps to take back or forward in the back 1790 * forward list. 1791 */ 1792 public void goBackOrForward(int steps) { 1793 goBackOrForward(steps, false); 1794 } 1795 1796 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1797 if (steps != 0) { 1798 clearHelpers(); 1799 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1800 ignoreSnapshot ? 1 : 0); 1801 } 1802 } 1803 1804 private boolean extendScroll(int y) { 1805 int finalY = mScroller.getFinalY(); 1806 int newY = pinLocY(finalY + y); 1807 if (newY == finalY) return false; 1808 mScroller.setFinalY(newY); 1809 mScroller.extendDuration(computeDuration(0, y)); 1810 return true; 1811 } 1812 1813 /** 1814 * Scroll the contents of the view up by half the view size 1815 * @param top true to jump to the top of the page 1816 * @return true if the page was scrolled 1817 */ 1818 public boolean pageUp(boolean top) { 1819 if (mNativeClass == 0) { 1820 return false; 1821 } 1822 nativeClearCursor(); // start next trackball movement from page edge 1823 if (top) { 1824 // go to the top of the document 1825 return pinScrollTo(mScrollX, 0, true, 0); 1826 } 1827 // Page up 1828 int h = getHeight(); 1829 int y; 1830 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1831 y = -h + PAGE_SCROLL_OVERLAP; 1832 } else { 1833 y = -h / 2; 1834 } 1835 mUserScroll = true; 1836 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1837 : extendScroll(y); 1838 } 1839 1840 /** 1841 * Scroll the contents of the view down by half the page size 1842 * @param bottom true to jump to bottom of page 1843 * @return true if the page was scrolled 1844 */ 1845 public boolean pageDown(boolean bottom) { 1846 if (mNativeClass == 0) { 1847 return false; 1848 } 1849 nativeClearCursor(); // start next trackball movement from page edge 1850 if (bottom) { 1851 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 1852 } 1853 // Page down. 1854 int h = getHeight(); 1855 int y; 1856 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1857 y = h - PAGE_SCROLL_OVERLAP; 1858 } else { 1859 y = h / 2; 1860 } 1861 mUserScroll = true; 1862 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1863 : extendScroll(y); 1864 } 1865 1866 /** 1867 * Clear the view so that onDraw() will draw nothing but white background, 1868 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1869 */ 1870 public void clearView() { 1871 mContentWidth = 0; 1872 mContentHeight = 0; 1873 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1874 } 1875 1876 /** 1877 * Return a new picture that captures the current display of the webview. 1878 * This is a copy of the display, and will be unaffected if the webview 1879 * later loads a different URL. 1880 * 1881 * @return a picture containing the current contents of the view. Note this 1882 * picture is of the entire document, and is not restricted to the 1883 * bounds of the view. 1884 */ 1885 public Picture capturePicture() { 1886 if (null == mWebViewCore) return null; // check for out of memory tab 1887 return mWebViewCore.copyContentPicture(); 1888 } 1889 1890 /** 1891 * Return true if the browser is displaying a TextView for text input. 1892 */ 1893 private boolean inEditingMode() { 1894 return mWebTextView != null && mWebTextView.getParent() != null; 1895 } 1896 1897 /** 1898 * Remove the WebTextView. 1899 * @param disableFocusController If true, send a message to webkit 1900 * disabling the focus controller, so the caret stops blinking. 1901 */ 1902 private void clearTextEntry(boolean disableFocusController) { 1903 if (inEditingMode()) { 1904 mWebTextView.remove(); 1905 if (disableFocusController) { 1906 setFocusControllerInactive(); 1907 } 1908 } 1909 } 1910 1911 /** 1912 * Return the current scale of the WebView 1913 * @return The current scale. 1914 */ 1915 public float getScale() { 1916 return mActualScale; 1917 } 1918 1919 /** 1920 * Set the initial scale for the WebView. 0 means default. If 1921 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1922 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1923 * WebView starts will this value as initial scale. 1924 * 1925 * @param scaleInPercent The initial scale in percent. 1926 */ 1927 public void setInitialScale(int scaleInPercent) { 1928 mInitialScaleInPercent = scaleInPercent; 1929 } 1930 1931 /** 1932 * Invoke the graphical zoom picker widget for this WebView. This will 1933 * result in the zoom widget appearing on the screen to control the zoom 1934 * level of this WebView. 1935 */ 1936 public void invokeZoomPicker() { 1937 if (!getSettings().supportZoom()) { 1938 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1939 return; 1940 } 1941 clearTextEntry(false); 1942 if (getSettings().getBuiltInZoomControls()) { 1943 getZoomButtonsController().setVisible(true); 1944 } else { 1945 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1946 mPrivateHandler.postDelayed(mZoomControlRunnable, 1947 ZOOM_CONTROLS_TIMEOUT); 1948 } 1949 } 1950 1951 /** 1952 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1953 * is found and the anchor has a non-javascript url, the HitTestResult type 1954 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1955 * anchor does not have a url or if it is a javascript url, the type will 1956 * be UNKNOWN_TYPE and the url has to be retrieved through 1957 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1958 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1959 * the "extra" field. A type of 1960 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1961 * a child node. If a phone number is found, the HitTestResult type is set 1962 * to PHONE_TYPE and the phone number is set in the "extra" field of 1963 * HitTestResult. If a map address is found, the HitTestResult type is set 1964 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1965 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1966 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1967 * HitTestResult type is set to UNKNOWN_TYPE. 1968 */ 1969 public HitTestResult getHitTestResult() { 1970 if (mNativeClass == 0) { 1971 return null; 1972 } 1973 1974 HitTestResult result = new HitTestResult(); 1975 if (nativeHasCursorNode()) { 1976 if (nativeCursorIsTextInput()) { 1977 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1978 } else { 1979 String text = nativeCursorText(); 1980 if (text != null) { 1981 if (text.startsWith(SCHEME_TEL)) { 1982 result.setType(HitTestResult.PHONE_TYPE); 1983 result.setExtra(text.substring(SCHEME_TEL.length())); 1984 } else if (text.startsWith(SCHEME_MAILTO)) { 1985 result.setType(HitTestResult.EMAIL_TYPE); 1986 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1987 } else if (text.startsWith(SCHEME_GEO)) { 1988 result.setType(HitTestResult.GEO_TYPE); 1989 result.setExtra(URLDecoder.decode(text 1990 .substring(SCHEME_GEO.length()))); 1991 } else if (nativeCursorIsAnchor()) { 1992 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1993 result.setExtra(text); 1994 } 1995 } 1996 } 1997 } 1998 int type = result.getType(); 1999 if (type == HitTestResult.UNKNOWN_TYPE 2000 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2001 // Now check to see if it is an image. 2002 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2003 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2004 String text = nativeImageURI(contentX, contentY); 2005 if (text != null) { 2006 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2007 HitTestResult.IMAGE_TYPE : 2008 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2009 result.setExtra(text); 2010 } 2011 } 2012 return result; 2013 } 2014 2015 // Called by JNI when the DOM has changed the focus. Clear the focus so 2016 // that new keys will go to the newly focused field 2017 private void domChangedFocus() { 2018 if (inEditingMode()) { 2019 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2020 } 2021 } 2022 /** 2023 * Request the href of an anchor element due to getFocusNodePath returning 2024 * "href." If hrefMsg is null, this method returns immediately and does not 2025 * dispatch hrefMsg to its target. 2026 * 2027 * @param hrefMsg This message will be dispatched with the result of the 2028 * request as the data member with "url" as key. The result can 2029 * be null. 2030 */ 2031 // FIXME: API change required to change the name of this function. We now 2032 // look at the cursor node, and not the focus node. Also, what is 2033 // getFocusNodePath? 2034 public void requestFocusNodeHref(Message hrefMsg) { 2035 if (hrefMsg == null || mNativeClass == 0) { 2036 return; 2037 } 2038 if (nativeCursorIsAnchor()) { 2039 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2040 nativeCursorFramePointer(), nativeCursorNodePointer(), 2041 hrefMsg); 2042 } 2043 } 2044 2045 /** 2046 * Request the url of the image last touched by the user. msg will be sent 2047 * to its target with a String representing the url as its object. 2048 * 2049 * @param msg This message will be dispatched with the result of the request 2050 * as the data member with "url" as key. The result can be null. 2051 */ 2052 public void requestImageRef(Message msg) { 2053 if (0 == mNativeClass) return; // client isn't initialized 2054 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2055 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2056 String ref = nativeImageURI(contentX, contentY); 2057 Bundle data = msg.getData(); 2058 data.putString("url", ref); 2059 msg.setData(data); 2060 msg.sendToTarget(); 2061 } 2062 2063 private static int pinLoc(int x, int viewMax, int docMax) { 2064// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2065 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2066 // pin the short document to the top/left of the screen 2067 x = 0; 2068// Log.d(LOGTAG, "--- center " + x); 2069 } else if (x < 0) { 2070 x = 0; 2071// Log.d(LOGTAG, "--- zero"); 2072 } else if (x + viewMax > docMax) { 2073 x = docMax - viewMax; 2074// Log.d(LOGTAG, "--- pin " + x); 2075 } 2076 return x; 2077 } 2078 2079 // Expects x in view coordinates 2080 private int pinLocX(int x) { 2081 if (mInOverScrollMode) return x; 2082 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2083 } 2084 2085 // Expects y in view coordinates 2086 private int pinLocY(int y) { 2087 if (mInOverScrollMode) return y; 2088 return pinLoc(y, getViewHeightWithTitle(), 2089 computeRealVerticalScrollRange() + getTitleHeight()); 2090 } 2091 2092 /** 2093 * A title bar which is embedded in this WebView, and scrolls along with it 2094 * vertically, but not horizontally. 2095 */ 2096 private View mTitleBar; 2097 2098 /** 2099 * Since we draw the title bar ourselves, we removed the shadow from the 2100 * browser's activity. We do want a shadow at the bottom of the title bar, 2101 * or at the top of the screen if the title bar is not visible. This 2102 * drawable serves that purpose. 2103 */ 2104 private Drawable mTitleShadow; 2105 2106 /** 2107 * Add or remove a title bar to be embedded into the WebView, and scroll 2108 * along with it vertically, while remaining in view horizontally. Pass 2109 * null to remove the title bar from the WebView, and return to drawing 2110 * the WebView normally without translating to account for the title bar. 2111 * @hide 2112 */ 2113 public void setEmbeddedTitleBar(View v) { 2114 if (mTitleBar == v) return; 2115 if (mTitleBar != null) { 2116 removeView(mTitleBar); 2117 } 2118 if (null != v) { 2119 addView(v, new AbsoluteLayout.LayoutParams( 2120 ViewGroup.LayoutParams.MATCH_PARENT, 2121 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2122 if (mTitleShadow == null) { 2123 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 2124 com.android.internal.R.drawable.title_bar_shadow); 2125 } 2126 } 2127 mTitleBar = v; 2128 } 2129 2130 /** 2131 * Given a distance in view space, convert it to content space. Note: this 2132 * does not reflect translation, just scaling, so this should not be called 2133 * with coordinates, but should be called for dimensions like width or 2134 * height. 2135 */ 2136 private int viewToContentDimension(int d) { 2137 return Math.round(d * mInvActualScale); 2138 } 2139 2140 /** 2141 * Given an x coordinate in view space, convert it to content space. Also 2142 * may be used for absolute heights (such as for the WebTextView's 2143 * textSize, which is unaffected by the height of the title bar). 2144 */ 2145 /*package*/ int viewToContentX(int x) { 2146 return viewToContentDimension(x); 2147 } 2148 2149 /** 2150 * Given a y coordinate in view space, convert it to content space. 2151 * Takes into account the height of the title bar if there is one 2152 * embedded into the WebView. 2153 */ 2154 /*package*/ int viewToContentY(int y) { 2155 return viewToContentDimension(y - getTitleHeight()); 2156 } 2157 2158 /** 2159 * Given a x coordinate in view space, convert it to content space. 2160 * Returns the result as a float. 2161 */ 2162 private float viewToContentXf(int x) { 2163 return x * mInvActualScale; 2164 } 2165 2166 /** 2167 * Given a y coordinate in view space, convert it to content space. 2168 * Takes into account the height of the title bar if there is one 2169 * embedded into the WebView. Returns the result as a float. 2170 */ 2171 private float viewToContentYf(int y) { 2172 return (y - getTitleHeight()) * mInvActualScale; 2173 } 2174 2175 /** 2176 * Given a distance in content space, convert it to view space. Note: this 2177 * does not reflect translation, just scaling, so this should not be called 2178 * with coordinates, but should be called for dimensions like width or 2179 * height. 2180 */ 2181 /*package*/ int contentToViewDimension(int d) { 2182 return Math.round(d * mActualScale); 2183 } 2184 2185 /** 2186 * Given an x coordinate in content space, convert it to view 2187 * space. 2188 */ 2189 /*package*/ int contentToViewX(int x) { 2190 return contentToViewDimension(x); 2191 } 2192 2193 /** 2194 * Given a y coordinate in content space, convert it to view 2195 * space. Takes into account the height of the title bar. 2196 */ 2197 /*package*/ int contentToViewY(int y) { 2198 return contentToViewDimension(y) + getTitleHeight(); 2199 } 2200 2201 private Rect contentToViewRect(Rect x) { 2202 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2203 contentToViewX(x.right), contentToViewY(x.bottom)); 2204 } 2205 2206 /* To invalidate a rectangle in content coordinates, we need to transform 2207 the rect into view coordinates, so we can then call invalidate(...). 2208 2209 Normally, we would just call contentToView[XY](...), which eventually 2210 calls Math.round(coordinate * mActualScale). However, for invalidates, 2211 we need to account for the slop that occurs with antialiasing. To 2212 address that, we are a little more liberal in the size of the rect that 2213 we invalidate. 2214 2215 This liberal calculation calls floor() for the top/left, and ceil() for 2216 the bottom/right coordinates. This catches the possible extra pixels of 2217 antialiasing that we might have missed with just round(). 2218 */ 2219 2220 // Called by JNI to invalidate the View, given rectangle coordinates in 2221 // content space 2222 private void viewInvalidate(int l, int t, int r, int b) { 2223 final float scale = mActualScale; 2224 final int dy = getTitleHeight(); 2225 invalidate((int)Math.floor(l * scale), 2226 (int)Math.floor(t * scale) + dy, 2227 (int)Math.ceil(r * scale), 2228 (int)Math.ceil(b * scale) + dy); 2229 } 2230 2231 // Called by JNI to invalidate the View after a delay, given rectangle 2232 // coordinates in content space 2233 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2234 final float scale = mActualScale; 2235 final int dy = getTitleHeight(); 2236 postInvalidateDelayed(delay, 2237 (int)Math.floor(l * scale), 2238 (int)Math.floor(t * scale) + dy, 2239 (int)Math.ceil(r * scale), 2240 (int)Math.ceil(b * scale) + dy); 2241 } 2242 2243 private void invalidateContentRect(Rect r) { 2244 viewInvalidate(r.left, r.top, r.right, r.bottom); 2245 } 2246 2247 // stop the scroll animation, and don't let a subsequent fling add 2248 // to the existing velocity 2249 private void abortAnimation() { 2250 mScroller.abortAnimation(); 2251 mLastVelocity = 0; 2252 } 2253 2254 /* call from webcoreview.draw(), so we're still executing in the UI thread 2255 */ 2256 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2257 2258 // premature data from webkit, ignore 2259 if ((w | h) == 0) { 2260 return; 2261 } 2262 2263 // don't abort a scroll animation if we didn't change anything 2264 if (mContentWidth != w || mContentHeight != h) { 2265 // record new dimensions 2266 mContentWidth = w; 2267 mContentHeight = h; 2268 // If history Picture is drawn, don't update scroll. They will be 2269 // updated when we get out of that mode. 2270 if (!mDrawHistory) { 2271 // repin our scroll, taking into account the new content size 2272 int oldX = mScrollX; 2273 int oldY = mScrollY; 2274 mScrollX = pinLocX(mScrollX); 2275 mScrollY = pinLocY(mScrollY); 2276 if (oldX != mScrollX || oldY != mScrollY) { 2277 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2278 } 2279 if (!mScroller.isFinished()) { 2280 // We are in the middle of a scroll. Repin the final scroll 2281 // position. 2282 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2283 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2284 } 2285 } 2286 } 2287 contentSizeChanged(updateLayout); 2288 } 2289 2290 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2291 boolean force) { 2292 if (scale < mMinZoomScale) { 2293 scale = mMinZoomScale; 2294 // set mInZoomOverview for non mobile sites 2295 if (scale < mDefaultScale) mInZoomOverview = true; 2296 } else if (scale > mMaxZoomScale) { 2297 scale = mMaxZoomScale; 2298 } 2299 if (updateTextWrapScale) { 2300 mTextWrapScale = scale; 2301 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2302 mLastHeightSent = 0; 2303 } 2304 if (scale != mActualScale || force) { 2305 if (mDrawHistory) { 2306 // If history Picture is drawn, don't update scroll. They will 2307 // be updated when we get out of that mode. 2308 if (scale != mActualScale && !mPreviewZoomOnly) { 2309 mCallbackProxy.onScaleChanged(mActualScale, scale); 2310 } 2311 mActualScale = scale; 2312 mInvActualScale = 1 / scale; 2313 sendViewSizeZoom(); 2314 } else { 2315 // update our scroll so we don't appear to jump 2316 // i.e. keep the center of the doc in the center of the view 2317 2318 int oldX = mScrollX; 2319 int oldY = mScrollY; 2320 float ratio = scale * mInvActualScale; // old inverse 2321 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2322 float sy = ratio * oldY + (ratio - 1) 2323 * (mZoomCenterY - getTitleHeight()); 2324 2325 // now update our new scale and inverse 2326 if (scale != mActualScale && !mPreviewZoomOnly) { 2327 mCallbackProxy.onScaleChanged(mActualScale, scale); 2328 } 2329 mActualScale = scale; 2330 mInvActualScale = 1 / scale; 2331 2332 // Scale all the child views 2333 mViewManager.scaleAll(); 2334 2335 // as we don't have animation for scaling, don't do animation 2336 // for scrolling, as it causes weird intermediate state 2337 // pinScrollTo(Math.round(sx), Math.round(sy)); 2338 mScrollX = pinLocX(Math.round(sx)); 2339 mScrollY = pinLocY(Math.round(sy)); 2340 2341 // update webkit 2342 if (oldX != mScrollX || oldY != mScrollY) { 2343 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2344 } else { 2345 // the scroll position is adjusted at the beginning of the 2346 // zoom animation. But we want to update the WebKit at the 2347 // end of the zoom animation. See comments in onScaleEnd(). 2348 sendOurVisibleRect(); 2349 } 2350 sendViewSizeZoom(); 2351 } 2352 } 2353 } 2354 2355 // Used to avoid sending many visible rect messages. 2356 private Rect mLastVisibleRectSent; 2357 private Rect mLastGlobalRect; 2358 2359 private Rect sendOurVisibleRect() { 2360 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2361 2362 Rect rect = new Rect(); 2363 calcOurContentVisibleRect(rect); 2364 // Rect.equals() checks for null input. 2365 if (!rect.equals(mLastVisibleRectSent)) { 2366 Point pos = new Point(rect.left, rect.top); 2367 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2368 nativeMoveGeneration(), 0, pos); 2369 mLastVisibleRectSent = rect; 2370 } 2371 Rect globalRect = new Rect(); 2372 if (getGlobalVisibleRect(globalRect) 2373 && !globalRect.equals(mLastGlobalRect)) { 2374 if (DebugFlags.WEB_VIEW) { 2375 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2376 + globalRect.top + ",r=" + globalRect.right + ",b=" 2377 + globalRect.bottom); 2378 } 2379 // TODO: the global offset is only used by windowRect() 2380 // in ChromeClientAndroid ; other clients such as touch 2381 // and mouse events could return view + screen relative points. 2382 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2383 mLastGlobalRect = globalRect; 2384 } 2385 return rect; 2386 } 2387 2388 // Sets r to be the visible rectangle of our webview in view coordinates 2389 private void calcOurVisibleRect(Rect r) { 2390 Point p = new Point(); 2391 getGlobalVisibleRect(r, p); 2392 r.offset(-p.x, -p.y); 2393 if (mFindIsUp) { 2394 r.bottom -= mFindHeight; 2395 } 2396 } 2397 2398 // Sets r to be our visible rectangle in content coordinates 2399 private void calcOurContentVisibleRect(Rect r) { 2400 calcOurVisibleRect(r); 2401 // since we might overscroll, pin the rect to the bounds of the content 2402 r.left = Math.max(viewToContentX(r.left), 0); 2403 // viewToContentY will remove the total height of the title bar. Add 2404 // the visible height back in to account for the fact that if the title 2405 // bar is partially visible, the part of the visible rect which is 2406 // displaying our content is displaced by that amount. 2407 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2408 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2409 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2410 } 2411 2412 // Sets r to be our visible rectangle in content coordinates. We use this 2413 // method on the native side to compute the position of the fixed layers. 2414 // Uses floating coordinates (necessary to correctly place elements when 2415 // the scale factor is not 1) 2416 private void calcOurContentVisibleRectF(RectF r) { 2417 Rect ri = new Rect(0,0,0,0); 2418 calcOurVisibleRect(ri); 2419 // pin the rect to the bounds of the content 2420 r.left = Math.max(viewToContentXf(ri.left), 0.0f); 2421 // viewToContentY will remove the total height of the title bar. Add 2422 // the visible height back in to account for the fact that if the title 2423 // bar is partially visible, the part of the visible rect which is 2424 // displaying our content is displaced by that amount. 2425 r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f); 2426 r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth); 2427 r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight); 2428 } 2429 2430 static class ViewSizeData { 2431 int mWidth; 2432 int mHeight; 2433 int mTextWrapWidth; 2434 int mAnchorX; 2435 int mAnchorY; 2436 float mScale; 2437 boolean mIgnoreHeight; 2438 } 2439 2440 /** 2441 * Compute unzoomed width and height, and if they differ from the last 2442 * values we sent, send them to webkit (to be used has new viewport) 2443 * 2444 * @return true if new values were sent 2445 */ 2446 private boolean sendViewSizeZoom() { 2447 if (mPreviewZoomOnly) return false; 2448 2449 int viewWidth = getViewWidth(); 2450 int newWidth = Math.round(viewWidth * mInvActualScale); 2451 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2452 /* 2453 * Because the native side may have already done a layout before the 2454 * View system was able to measure us, we have to send a height of 0 to 2455 * remove excess whitespace when we grow our width. This will trigger a 2456 * layout and a change in content size. This content size change will 2457 * mean that contentSizeChanged will either call this method directly or 2458 * indirectly from onSizeChanged. 2459 */ 2460 if (newWidth > mLastWidthSent && mWrapContent) { 2461 newHeight = 0; 2462 } 2463 // Avoid sending another message if the dimensions have not changed. 2464 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2465 ViewSizeData data = new ViewSizeData(); 2466 data.mWidth = newWidth; 2467 data.mHeight = newHeight; 2468 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2469 data.mScale = mActualScale; 2470 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2471 data.mAnchorX = mAnchorX; 2472 data.mAnchorY = mAnchorY; 2473 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2474 mLastWidthSent = newWidth; 2475 mLastHeightSent = newHeight; 2476 mAnchorX = mAnchorY = 0; 2477 return true; 2478 } 2479 return false; 2480 } 2481 2482 private int computeRealHorizontalScrollRange() { 2483 if (mDrawHistory) { 2484 return mHistoryWidth; 2485 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2486 && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2487 // only honor the scrollbar mode when it is at minimum zoom level 2488 return computeHorizontalScrollExtent(); 2489 } else { 2490 // to avoid rounding error caused unnecessary scrollbar, use floor 2491 return (int) Math.floor(mContentWidth * mActualScale); 2492 } 2493 } 2494 2495 @Override 2496 protected int computeHorizontalScrollRange() { 2497 int range = computeRealHorizontalScrollRange(); 2498 2499 // Adjust reported range if overscrolled to compress the scroll bars 2500 final int scrollX = mScrollX; 2501 final int overscrollRight = computeMaxScrollX(); 2502 if (scrollX < 0) { 2503 range -= scrollX; 2504 } else if (scrollX > overscrollRight) { 2505 range += scrollX - overscrollRight; 2506 } 2507 2508 return range; 2509 } 2510 2511 @Override 2512 protected int computeHorizontalScrollOffset() { 2513 return Math.max(mScrollX, 0); 2514 } 2515 2516 private int computeRealVerticalScrollRange() { 2517 if (mDrawHistory) { 2518 return mHistoryHeight; 2519 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2520 && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) { 2521 // only honor the scrollbar mode when it is at minimum zoom level 2522 return computeVerticalScrollExtent(); 2523 } else { 2524 // to avoid rounding error caused unnecessary scrollbar, use floor 2525 return (int) Math.floor(mContentHeight * mActualScale); 2526 } 2527 } 2528 2529 @Override 2530 protected int computeVerticalScrollRange() { 2531 int range = computeRealVerticalScrollRange(); 2532 2533 // Adjust reported range if overscrolled to compress the scroll bars 2534 final int scrollY = mScrollY; 2535 final int overscrollBottom = computeMaxScrollY(); 2536 if (scrollY < 0) { 2537 range -= scrollY; 2538 } else if (scrollY > overscrollBottom) { 2539 range += scrollY - overscrollBottom; 2540 } 2541 2542 return range; 2543 } 2544 2545 @Override 2546 protected int computeVerticalScrollOffset() { 2547 return Math.max(mScrollY - getTitleHeight(), 0); 2548 } 2549 2550 @Override 2551 protected int computeVerticalScrollExtent() { 2552 return getViewHeight(); 2553 } 2554 2555 /** @hide */ 2556 @Override 2557 protected void onDrawVerticalScrollBar(Canvas canvas, 2558 Drawable scrollBar, 2559 int l, int t, int r, int b) { 2560 if (mScrollY < 0) { 2561 t -= mScrollY; 2562 } 2563 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2564 scrollBar.draw(canvas); 2565 } 2566 2567 @Override 2568 protected void onOverscrolled(int scrollX, int scrollY, boolean clampedX, 2569 boolean clampedY) { 2570 mInOverScrollMode = false; 2571 int maxX = computeMaxScrollX(); 2572 if (maxX == 0) { 2573 // do not over scroll x if the page just fits the screen 2574 scrollX = pinLocX(scrollX); 2575 } else if (scrollX < 0 || scrollX > maxX) { 2576 mInOverScrollMode = true; 2577 } 2578 if (scrollY < 0 || scrollY > computeMaxScrollY()) { 2579 mInOverScrollMode = true; 2580 } 2581 2582 super.scrollTo(scrollX, scrollY); 2583 } 2584 2585 /** 2586 * Get the url for the current page. This is not always the same as the url 2587 * passed to WebViewClient.onPageStarted because although the load for 2588 * that url has begun, the current page may not have changed. 2589 * @return The url for the current page. 2590 */ 2591 public String getUrl() { 2592 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2593 return h != null ? h.getUrl() : null; 2594 } 2595 2596 /** 2597 * Get the original url for the current page. This is not always the same 2598 * as the url passed to WebViewClient.onPageStarted because although the 2599 * load for that url has begun, the current page may not have changed. 2600 * Also, there may have been redirects resulting in a different url to that 2601 * originally requested. 2602 * @return The url that was originally requested for the current page. 2603 */ 2604 public String getOriginalUrl() { 2605 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2606 return h != null ? h.getOriginalUrl() : null; 2607 } 2608 2609 /** 2610 * Get the title for the current page. This is the title of the current page 2611 * until WebViewClient.onReceivedTitle is called. 2612 * @return The title for the current page. 2613 */ 2614 public String getTitle() { 2615 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2616 return h != null ? h.getTitle() : null; 2617 } 2618 2619 /** 2620 * Get the favicon for the current page. This is the favicon of the current 2621 * page until WebViewClient.onReceivedIcon is called. 2622 * @return The favicon for the current page. 2623 */ 2624 public Bitmap getFavicon() { 2625 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2626 return h != null ? h.getFavicon() : null; 2627 } 2628 2629 /** 2630 * Get the touch icon url for the apple-touch-icon <link> element. 2631 * @hide 2632 */ 2633 public String getTouchIconUrl() { 2634 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2635 return h != null ? h.getTouchIconUrl() : null; 2636 } 2637 2638 /** 2639 * Get the progress for the current page. 2640 * @return The progress for the current page between 0 and 100. 2641 */ 2642 public int getProgress() { 2643 return mCallbackProxy.getProgress(); 2644 } 2645 2646 /** 2647 * @return the height of the HTML content. 2648 */ 2649 public int getContentHeight() { 2650 return mContentHeight; 2651 } 2652 2653 /** 2654 * @return the width of the HTML content. 2655 * @hide 2656 */ 2657 public int getContentWidth() { 2658 return mContentWidth; 2659 } 2660 2661 /** 2662 * Pause all layout, parsing, and javascript timers for all webviews. This 2663 * is a global requests, not restricted to just this webview. This can be 2664 * useful if the application has been paused. 2665 */ 2666 public void pauseTimers() { 2667 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2668 } 2669 2670 /** 2671 * Resume all layout, parsing, and javascript timers for all webviews. 2672 * This will resume dispatching all timers. 2673 */ 2674 public void resumeTimers() { 2675 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2676 } 2677 2678 /** 2679 * Call this to pause any extra processing associated with this view and 2680 * its associated DOM/plugins/javascript/etc. For example, if the view is 2681 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2682 * network traffic. When the view is again "active", call onResume(). 2683 * 2684 * Note that this differs from pauseTimers(), which affects all views/DOMs 2685 * @hide 2686 */ 2687 public void onPause() { 2688 if (!mIsPaused) { 2689 mIsPaused = true; 2690 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2691 } 2692 } 2693 2694 /** 2695 * Call this to balanace a previous call to onPause() 2696 * @hide 2697 */ 2698 public void onResume() { 2699 if (mIsPaused) { 2700 mIsPaused = false; 2701 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2702 } 2703 } 2704 2705 /** 2706 * Returns true if the view is paused, meaning onPause() was called. Calling 2707 * onResume() sets the paused state back to false. 2708 * @hide 2709 */ 2710 public boolean isPaused() { 2711 return mIsPaused; 2712 } 2713 2714 /** 2715 * Call this to inform the view that memory is low so that it can 2716 * free any available memory. 2717 */ 2718 public void freeMemory() { 2719 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2720 } 2721 2722 /** 2723 * Clear the resource cache. Note that the cache is per-application, so 2724 * this will clear the cache for all WebViews used. 2725 * 2726 * @param includeDiskFiles If false, only the RAM cache is cleared. 2727 */ 2728 public void clearCache(boolean includeDiskFiles) { 2729 // Note: this really needs to be a static method as it clears cache for all 2730 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2731 // we can't make this static. 2732 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2733 includeDiskFiles ? 1 : 0, 0); 2734 } 2735 2736 /** 2737 * Make sure that clearing the form data removes the adapter from the 2738 * currently focused textfield if there is one. 2739 */ 2740 public void clearFormData() { 2741 if (inEditingMode()) { 2742 AutoCompleteAdapter adapter = null; 2743 mWebTextView.setAdapterCustom(adapter); 2744 } 2745 } 2746 2747 /** 2748 * Tell the WebView to clear its internal back/forward list. 2749 */ 2750 public void clearHistory() { 2751 mCallbackProxy.getBackForwardList().setClearPending(); 2752 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2753 } 2754 2755 /** 2756 * Clear the SSL preferences table stored in response to proceeding with SSL 2757 * certificate errors. 2758 */ 2759 public void clearSslPreferences() { 2760 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2761 } 2762 2763 /** 2764 * Return the WebBackForwardList for this WebView. This contains the 2765 * back/forward list for use in querying each item in the history stack. 2766 * This is a copy of the private WebBackForwardList so it contains only a 2767 * snapshot of the current state. Multiple calls to this method may return 2768 * different objects. The object returned from this method will not be 2769 * updated to reflect any new state. 2770 */ 2771 public WebBackForwardList copyBackForwardList() { 2772 return mCallbackProxy.getBackForwardList().clone(); 2773 } 2774 2775 /* 2776 * Highlight and scroll to the next occurance of String in findAll. 2777 * Wraps the page infinitely, and scrolls. Must be called after 2778 * calling findAll. 2779 * 2780 * @param forward Direction to search. 2781 */ 2782 public void findNext(boolean forward) { 2783 if (0 == mNativeClass) return; // client isn't initialized 2784 nativeFindNext(forward); 2785 } 2786 2787 /* 2788 * Find all instances of find on the page and highlight them. 2789 * @param find String to find. 2790 * @return int The number of occurances of the String "find" 2791 * that were found. 2792 */ 2793 public int findAll(String find) { 2794 if (0 == mNativeClass) return 0; // client isn't initialized 2795 int result = find != null ? nativeFindAll(find.toLowerCase(), 2796 find.toUpperCase()) : 0; 2797 invalidate(); 2798 mLastFind = find; 2799 return result; 2800 } 2801 2802 /** 2803 * @hide 2804 */ 2805 public void setFindIsUp(boolean isUp) { 2806 mFindIsUp = isUp; 2807 if (isUp) { 2808 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2809 false); 2810 } 2811 if (0 == mNativeClass) return; // client isn't initialized 2812 nativeSetFindIsUp(isUp); 2813 } 2814 2815 /** 2816 * @hide 2817 */ 2818 public int findIndex() { 2819 if (0 == mNativeClass) return -1; 2820 return nativeFindIndex(); 2821 } 2822 2823 // Used to know whether the find dialog is open. Affects whether 2824 // or not we draw the highlights for matches. 2825 private boolean mFindIsUp; 2826 2827 private int mFindHeight; 2828 // Keep track of the last string sent, so we can search again after an 2829 // orientation change or the dismissal of the soft keyboard. 2830 private String mLastFind; 2831 2832 /** 2833 * Return the first substring consisting of the address of a physical 2834 * location. Currently, only addresses in the United States are detected, 2835 * and consist of: 2836 * - a house number 2837 * - a street name 2838 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2839 * - a city name 2840 * - a state or territory, either spelled out or two-letter abbr. 2841 * - an optional 5 digit or 9 digit zip code. 2842 * 2843 * All names must be correctly capitalized, and the zip code, if present, 2844 * must be valid for the state. The street type must be a standard USPS 2845 * spelling or abbreviation. The state or territory must also be spelled 2846 * or abbreviated using USPS standards. The house number may not exceed 2847 * five digits. 2848 * @param addr The string to search for addresses. 2849 * 2850 * @return the address, or if no address is found, return null. 2851 */ 2852 public static String findAddress(String addr) { 2853 return findAddress(addr, false); 2854 } 2855 2856 /** 2857 * @hide 2858 * Return the first substring consisting of the address of a physical 2859 * location. Currently, only addresses in the United States are detected, 2860 * and consist of: 2861 * - a house number 2862 * - a street name 2863 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2864 * - a city name 2865 * - a state or territory, either spelled out or two-letter abbr. 2866 * - an optional 5 digit or 9 digit zip code. 2867 * 2868 * Names are optionally capitalized, and the zip code, if present, 2869 * must be valid for the state. The street type must be a standard USPS 2870 * spelling or abbreviation. The state or territory must also be spelled 2871 * or abbreviated using USPS standards. The house number may not exceed 2872 * five digits. 2873 * @param addr The string to search for addresses. 2874 * @param caseInsensitive addr Set to true to make search ignore case. 2875 * 2876 * @return the address, or if no address is found, return null. 2877 */ 2878 public static String findAddress(String addr, boolean caseInsensitive) { 2879 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2880 } 2881 2882 /* 2883 * Clear the highlighting surrounding text matches created by findAll. 2884 */ 2885 public void clearMatches() { 2886 mLastFind = ""; 2887 if (mNativeClass == 0) 2888 return; 2889 nativeSetFindIsEmpty(); 2890 invalidate(); 2891 } 2892 2893 /** 2894 * @hide 2895 */ 2896 public void notifyFindDialogDismissed() { 2897 if (mWebViewCore == null) { 2898 return; 2899 } 2900 clearMatches(); 2901 setFindIsUp(false); 2902 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2903 false); 2904 // Now that the dialog has been removed, ensure that we scroll to a 2905 // location that is not beyond the end of the page. 2906 pinScrollTo(mScrollX, mScrollY, false, 0); 2907 invalidate(); 2908 } 2909 2910 /** 2911 * @hide 2912 */ 2913 public void setFindDialogHeight(int height) { 2914 if (DebugFlags.WEB_VIEW) { 2915 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2916 } 2917 mFindHeight = height; 2918 } 2919 2920 /** 2921 * Query the document to see if it contains any image references. The 2922 * message object will be dispatched with arg1 being set to 1 if images 2923 * were found and 0 if the document does not reference any images. 2924 * @param response The message that will be dispatched with the result. 2925 */ 2926 public void documentHasImages(Message response) { 2927 if (response == null) { 2928 return; 2929 } 2930 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2931 } 2932 2933 @Override 2934 public void computeScroll() { 2935 if (mScroller.computeScrollOffset()) { 2936 int oldX = mScrollX; 2937 int oldY = mScrollY; 2938 int x = mScroller.getCurrX(); 2939 int y = mScroller.getCurrY(); 2940 invalidate(); // So we draw again 2941 2942 if (oldX != x || oldY != y) { 2943 final int rangeX = computeMaxScrollX(); 2944 final int rangeY = computeMaxScrollY(); 2945 overscrollBy(x - oldX, y - oldY, oldX, oldY, 2946 rangeX, rangeY, 2947 mOverflingDistance, mOverflingDistance, false); 2948 2949 if (mEdgeGlowTop != null) { 2950 if (rangeY > 0 || getOverscrollMode() == OVERSCROLL_ALWAYS) { 2951 if (y < 0 && oldY >= 0) { 2952 mEdgeGlowTop.onAbsorb((int) mScroller.getCurrVelocity()); 2953 if (!mEdgeGlowBottom.isFinished()) { 2954 mEdgeGlowBottom.onRelease(); 2955 } 2956 } else if (y > rangeY && oldY <= rangeY) { 2957 mEdgeGlowBottom.onAbsorb((int) mScroller.getCurrVelocity()); 2958 if (!mEdgeGlowTop.isFinished()) { 2959 mEdgeGlowTop.onRelease(); 2960 } 2961 } 2962 } 2963 2964 if (rangeX > 0) { 2965 if (x < 0 && oldX >= 0) { 2966 mEdgeGlowLeft.onAbsorb((int) mScroller.getCurrVelocity()); 2967 if (!mEdgeGlowRight.isFinished()) { 2968 mEdgeGlowRight.onRelease(); 2969 } 2970 } else if (x > rangeX && oldX <= rangeX) { 2971 mEdgeGlowRight.onAbsorb((int) mScroller.getCurrVelocity()); 2972 if (!mEdgeGlowLeft.isFinished()) { 2973 mEdgeGlowLeft.onRelease(); 2974 } 2975 } 2976 } 2977 } 2978 } 2979 if (mScroller.isFinished()) { 2980 mPrivateHandler.sendEmptyMessage(RESUME_WEBCORE_PRIORITY); 2981 } 2982 } else { 2983 super.computeScroll(); 2984 } 2985 } 2986 2987 private static int computeDuration(int dx, int dy) { 2988 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2989 int duration = distance * 1000 / STD_SPEED; 2990 return Math.min(duration, MAX_DURATION); 2991 } 2992 2993 // helper to pin the scrollBy parameters (already in view coordinates) 2994 // returns true if the scroll was changed 2995 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2996 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2997 } 2998 // helper to pin the scrollTo parameters (already in view coordinates) 2999 // returns true if the scroll was changed 3000 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3001 x = pinLocX(x); 3002 y = pinLocY(y); 3003 int dx = x - mScrollX; 3004 int dy = y - mScrollY; 3005 3006 if ((dx | dy) == 0) { 3007 return false; 3008 } 3009 if (animate) { 3010 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3011 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3012 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3013 awakenScrollBars(mScroller.getDuration()); 3014 invalidate(); 3015 } else { 3016 abortAnimation(); // just in case 3017 scrollTo(x, y); 3018 } 3019 return true; 3020 } 3021 3022 // Scale from content to view coordinates, and pin. 3023 // Also called by jni webview.cpp 3024 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3025 if (mDrawHistory) { 3026 // disallow WebView to change the scroll position as History Picture 3027 // is used in the view system. 3028 // TODO: as we switchOutDrawHistory when trackball or navigation 3029 // keys are hit, this should be safe. Right? 3030 return false; 3031 } 3032 cx = contentToViewDimension(cx); 3033 cy = contentToViewDimension(cy); 3034 if (mHeightCanMeasure) { 3035 // move our visible rect according to scroll request 3036 if (cy != 0) { 3037 Rect tempRect = new Rect(); 3038 calcOurVisibleRect(tempRect); 3039 tempRect.offset(cx, cy); 3040 requestRectangleOnScreen(tempRect); 3041 } 3042 // FIXME: We scroll horizontally no matter what because currently 3043 // ScrollView and ListView will not scroll horizontally. 3044 // FIXME: Why do we only scroll horizontally if there is no 3045 // vertical scroll? 3046// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3047 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3048 } else { 3049 return pinScrollBy(cx, cy, animate, 0); 3050 } 3051 } 3052 3053 /** 3054 * Called by CallbackProxy when the page finishes loading. 3055 * @param url The URL of the page which has finished loading. 3056 */ 3057 /* package */ void onPageFinished(String url) { 3058 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3059 // If the user is now on a different page, or has scrolled the page 3060 // past the point where the title bar is offscreen, ignore the 3061 // scroll request. 3062 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3063 && mScrollX == 0 && mScrollY == 0) { 3064 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3065 SLIDE_TITLE_DURATION); 3066 } 3067 mPageThatNeedsToSlideTitleBarOffScreen = null; 3068 } 3069 } 3070 3071 /** 3072 * The URL of a page that sent a message to scroll the title bar off screen. 3073 * 3074 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3075 * title bar off the screen. Sometimes, the scroll position is set before 3076 * the page finishes loading. Rather than scrolling while the page is still 3077 * loading, keep track of the URL and new scroll position so we can perform 3078 * the scroll once the page finishes loading. 3079 */ 3080 private String mPageThatNeedsToSlideTitleBarOffScreen; 3081 3082 /** 3083 * The destination Y scroll position to be used when the page finishes 3084 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3085 */ 3086 private int mYDistanceToSlideTitleOffScreen; 3087 3088 // scale from content to view coordinates, and pin 3089 // return true if pin caused the final x/y different than the request cx/cy, 3090 // and a future scroll may reach the request cx/cy after our size has 3091 // changed 3092 // return false if the view scroll to the exact position as it is requested, 3093 // where negative numbers are taken to mean 0 3094 private boolean setContentScrollTo(int cx, int cy) { 3095 if (mDrawHistory) { 3096 // disallow WebView to change the scroll position as History Picture 3097 // is used in the view system. 3098 // One known case where this is called is that WebCore tries to 3099 // restore the scroll position. As history Picture already uses the 3100 // saved scroll position, it is ok to skip this. 3101 return false; 3102 } 3103 int vx; 3104 int vy; 3105 if ((cx | cy) == 0) { 3106 // If the page is being scrolled to (0,0), do not add in the title 3107 // bar's height, and simply scroll to (0,0). (The only other work 3108 // in contentToView_ is to multiply, so this would not change 0.) 3109 vx = 0; 3110 vy = 0; 3111 } else { 3112 vx = contentToViewX(cx); 3113 vy = contentToViewY(cy); 3114 } 3115// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3116// vx + " " + vy + "]"); 3117 // Some mobile sites attempt to scroll the title bar off the page by 3118 // scrolling to (0,1). If we are at the top left corner of the 3119 // page, assume this is an attempt to scroll off the title bar, and 3120 // animate the title bar off screen slowly enough that the user can see 3121 // it. 3122 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3123 && mTitleBar != null) { 3124 // FIXME: 100 should be defined somewhere as our max progress. 3125 if (getProgress() < 100) { 3126 // Wait to scroll the title bar off screen until the page has 3127 // finished loading. Keep track of the URL and the destination 3128 // Y position 3129 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3130 mYDistanceToSlideTitleOffScreen = vy; 3131 } else { 3132 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3133 } 3134 // Since we are animating, we have not yet reached the desired 3135 // scroll position. Do not return true to request another attempt 3136 return false; 3137 } 3138 pinScrollTo(vx, vy, false, 0); 3139 // If the request was to scroll to a negative coordinate, treat it as if 3140 // it was a request to scroll to 0 3141 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3142 return true; 3143 } else { 3144 return false; 3145 } 3146 } 3147 3148 // scale from content to view coordinates, and pin 3149 private void spawnContentScrollTo(int cx, int cy) { 3150 if (mDrawHistory) { 3151 // disallow WebView to change the scroll position as History Picture 3152 // is used in the view system. 3153 return; 3154 } 3155 int vx = contentToViewX(cx); 3156 int vy = contentToViewY(cy); 3157 pinScrollTo(vx, vy, true, 0); 3158 } 3159 3160 /** 3161 * These are from webkit, and are in content coordinate system (unzoomed) 3162 */ 3163 private void contentSizeChanged(boolean updateLayout) { 3164 // suppress 0,0 since we usually see real dimensions soon after 3165 // this avoids drawing the prev content in a funny place. If we find a 3166 // way to consolidate these notifications, this check may become 3167 // obsolete 3168 if ((mContentWidth | mContentHeight) == 0) { 3169 return; 3170 } 3171 3172 if (mHeightCanMeasure) { 3173 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3174 || updateLayout) { 3175 requestLayout(); 3176 } 3177 } else if (mWidthCanMeasure) { 3178 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3179 || updateLayout) { 3180 requestLayout(); 3181 } 3182 } else { 3183 // If we don't request a layout, try to send our view size to the 3184 // native side to ensure that WebCore has the correct dimensions. 3185 sendViewSizeZoom(); 3186 } 3187 } 3188 3189 /** 3190 * Set the WebViewClient that will receive various notifications and 3191 * requests. This will replace the current handler. 3192 * @param client An implementation of WebViewClient. 3193 */ 3194 public void setWebViewClient(WebViewClient client) { 3195 mCallbackProxy.setWebViewClient(client); 3196 } 3197 3198 /** 3199 * Gets the WebViewClient 3200 * @return the current WebViewClient instance. 3201 * 3202 *@hide pending API council approval. 3203 */ 3204 public WebViewClient getWebViewClient() { 3205 return mCallbackProxy.getWebViewClient(); 3206 } 3207 3208 /** 3209 * Register the interface to be used when content can not be handled by 3210 * the rendering engine, and should be downloaded instead. This will replace 3211 * the current handler. 3212 * @param listener An implementation of DownloadListener. 3213 */ 3214 public void setDownloadListener(DownloadListener listener) { 3215 mCallbackProxy.setDownloadListener(listener); 3216 } 3217 3218 /** 3219 * Set the chrome handler. This is an implementation of WebChromeClient for 3220 * use in handling Javascript dialogs, favicons, titles, and the progress. 3221 * This will replace the current handler. 3222 * @param client An implementation of WebChromeClient. 3223 */ 3224 public void setWebChromeClient(WebChromeClient client) { 3225 mCallbackProxy.setWebChromeClient(client); 3226 } 3227 3228 /** 3229 * Gets the chrome handler. 3230 * @return the current WebChromeClient instance. 3231 * 3232 * @hide API council approval. 3233 */ 3234 public WebChromeClient getWebChromeClient() { 3235 return mCallbackProxy.getWebChromeClient(); 3236 } 3237 3238 /** 3239 * Set the back/forward list client. This is an implementation of 3240 * WebBackForwardListClient for handling new items and changes in the 3241 * history index. 3242 * @param client An implementation of WebBackForwardListClient. 3243 * {@hide} 3244 */ 3245 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3246 mCallbackProxy.setWebBackForwardListClient(client); 3247 } 3248 3249 /** 3250 * Gets the WebBackForwardListClient. 3251 * {@hide} 3252 */ 3253 public WebBackForwardListClient getWebBackForwardListClient() { 3254 return mCallbackProxy.getWebBackForwardListClient(); 3255 } 3256 3257 /** 3258 * Set the Picture listener. This is an interface used to receive 3259 * notifications of a new Picture. 3260 * @param listener An implementation of WebView.PictureListener. 3261 */ 3262 public void setPictureListener(PictureListener listener) { 3263 mPictureListener = listener; 3264 } 3265 3266 /** 3267 * {@hide} 3268 */ 3269 /* FIXME: Debug only! Remove for SDK! */ 3270 public void externalRepresentation(Message callback) { 3271 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3272 } 3273 3274 /** 3275 * {@hide} 3276 */ 3277 /* FIXME: Debug only! Remove for SDK! */ 3278 public void documentAsText(Message callback) { 3279 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3280 } 3281 3282 /** 3283 * Use this function to bind an object to Javascript so that the 3284 * methods can be accessed from Javascript. 3285 * <p><strong>IMPORTANT:</strong> 3286 * <ul> 3287 * <li> Using addJavascriptInterface() allows JavaScript to control your 3288 * application. This can be a very useful feature or a dangerous security 3289 * issue. When the HTML in the WebView is untrustworthy (for example, part 3290 * or all of the HTML is provided by some person or process), then an 3291 * attacker could inject HTML that will execute your code and possibly any 3292 * code of the attacker's choosing.<br> 3293 * Do not use addJavascriptInterface() unless all of the HTML in this 3294 * WebView was written by you.</li> 3295 * <li> The Java object that is bound runs in another thread and not in 3296 * the thread that it was constructed in.</li> 3297 * </ul></p> 3298 * @param obj The class instance to bind to Javascript 3299 * @param interfaceName The name to used to expose the class in Javascript 3300 */ 3301 public void addJavascriptInterface(Object obj, String interfaceName) { 3302 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3303 arg.mObject = obj; 3304 arg.mInterfaceName = interfaceName; 3305 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3306 } 3307 3308 /** 3309 * Return the WebSettings object used to control the settings for this 3310 * WebView. 3311 * @return A WebSettings object that can be used to control this WebView's 3312 * settings. 3313 */ 3314 public WebSettings getSettings() { 3315 return mWebViewCore.getSettings(); 3316 } 3317 3318 /** 3319 * Use this method to inform the webview about packages that are installed 3320 * in the system. This information will be used by the 3321 * navigator.isApplicationInstalled() API. 3322 * @param packageNames is a set of package names that are known to be 3323 * installed in the system. 3324 * 3325 * @hide not a public API 3326 */ 3327 public void addPackageNames(Set<String> packageNames) { 3328 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 3329 } 3330 3331 /** 3332 * Use this method to inform the webview about single packages that are 3333 * installed in the system. This information will be used by the 3334 * navigator.isApplicationInstalled() API. 3335 * @param packageName is the name of a package that is known to be 3336 * installed in the system. 3337 * 3338 * @hide not a public API 3339 */ 3340 public void addPackageName(String packageName) { 3341 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3342 } 3343 3344 /** 3345 * Use this method to inform the webview about packages that are uninstalled 3346 * in the system. This information will be used by the 3347 * navigator.isApplicationInstalled() API. 3348 * @param packageName is the name of a package that has been uninstalled in 3349 * the system. 3350 * 3351 * @hide not a public API 3352 */ 3353 public void removePackageName(String packageName) { 3354 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3355 } 3356 3357 /** 3358 * Return the list of currently loaded plugins. 3359 * @return The list of currently loaded plugins. 3360 * 3361 * @deprecated This was used for Gears, which has been deprecated. 3362 */ 3363 @Deprecated 3364 public static synchronized PluginList getPluginList() { 3365 return new PluginList(); 3366 } 3367 3368 /** 3369 * @deprecated This was used for Gears, which has been deprecated. 3370 */ 3371 @Deprecated 3372 public void refreshPlugins(boolean reloadOpenPages) { } 3373 3374 //------------------------------------------------------------------------- 3375 // Override View methods 3376 //------------------------------------------------------------------------- 3377 3378 @Override 3379 protected void finalize() throws Throwable { 3380 try { 3381 destroy(); 3382 } finally { 3383 super.finalize(); 3384 } 3385 } 3386 3387 @Override 3388 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3389 if (child == mTitleBar) { 3390 // When drawing the title bar, move it horizontally to always show 3391 // at the top of the WebView. 3392 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3393 } 3394 return super.drawChild(canvas, child, drawingTime); 3395 } 3396 3397 private void drawContent(Canvas canvas) { 3398 // Update the buttons in the picture, so when we draw the picture 3399 // to the screen, they are in the correct state. 3400 // Tell the native side if user is a) touching the screen, 3401 // b) pressing the trackball down, or c) pressing the enter key 3402 // If the cursor is on a button, we need to draw it in the pressed 3403 // state. 3404 // If mNativeClass is 0, we should not reach here, so we do not 3405 // need to check it again. 3406 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3407 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3408 || mTrackballDown || mGotCenterDown, false); 3409 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3410 } 3411 3412 @Override 3413 protected void onDraw(Canvas canvas) { 3414 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3415 if (mNativeClass == 0) { 3416 return; 3417 } 3418 3419 // if both mContentWidth and mContentHeight are 0, it means there is no 3420 // valid Picture passed to WebView yet. This can happen when WebView 3421 // just starts. Draw the background and return. 3422 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3423 canvas.drawColor(mBackgroundColor); 3424 return; 3425 } 3426 3427 int saveCount = canvas.save(); 3428 if (mInOverScrollMode && !getSettings() 3429 .getUseWebViewBackgroundForOverscrollBackground()) { 3430 if (mOverScrollBackground == null) { 3431 mOverScrollBackground = new Paint(); 3432 Bitmap bm = BitmapFactory.decodeResource( 3433 mContext.getResources(), 3434 com.android.internal.R.drawable.status_bar_background); 3435 mOverScrollBackground.setShader(new BitmapShader(bm, 3436 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3437 mOverScrollBorder = new Paint(); 3438 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3439 mOverScrollBorder.setStrokeWidth(0); 3440 mOverScrollBorder.setColor(0xffbbbbbb); 3441 } 3442 3443 int top = 0; 3444 int right = computeRealHorizontalScrollRange(); 3445 int bottom = top + computeRealVerticalScrollRange(); 3446 // first draw the background and anchor to the top of the view 3447 canvas.save(); 3448 canvas.translate(mScrollX, mScrollY); 3449 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3450 - mScrollY, Region.Op.DIFFERENCE); 3451 canvas.drawPaint(mOverScrollBackground); 3452 canvas.restore(); 3453 // then draw the border 3454 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3455 // next clip the region for the content 3456 canvas.clipRect(0, top, right, bottom); 3457 } 3458 if (mTitleBar != null) { 3459 canvas.translate(0, (int) mTitleBar.getHeight()); 3460 } 3461 if (mDragTrackerHandler == null) { 3462 drawContent(canvas); 3463 } else { 3464 if (!mDragTrackerHandler.draw(canvas)) { 3465 // sometimes the tracker doesn't draw, even though its active 3466 drawContent(canvas); 3467 } 3468 if (mDragTrackerHandler.isFinished()) { 3469 mDragTrackerHandler = null; 3470 } 3471 } 3472 canvas.restoreToCount(saveCount); 3473 3474 // Now draw the shadow. 3475 int titleH = getVisibleTitleHeight(); 3476 if (mTitleBar != null && titleH == 0) { 3477 int height = (int) (5f * getContext().getResources() 3478 .getDisplayMetrics().density); 3479 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3480 mScrollY + height); 3481 mTitleShadow.draw(canvas); 3482 } 3483 3484 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3485 invalidate(); 3486 } 3487 mWebViewCore.signalRepaintDone(); 3488 } 3489 3490 @Override 3491 public void draw(Canvas canvas) { 3492 super.draw(canvas); 3493 if (mEdgeGlowTop != null && drawEdgeGlows(canvas)) { 3494 invalidate(); 3495 } 3496 } 3497 3498 /** 3499 * Draw the glow effect along the sides of the widget. mEdgeGlow* must be non-null. 3500 * 3501 * @param canvas Canvas to draw into, transformed into view coordinates. 3502 * @return true if glow effects are still animating and the view should invalidate again. 3503 */ 3504 private boolean drawEdgeGlows(Canvas canvas) { 3505 final int scrollX = mScrollX; 3506 final int scrollY = mScrollY; 3507 final int width = getWidth(); 3508 int height = getHeight(); 3509 3510 boolean invalidateForGlow = false; 3511 if (!mEdgeGlowTop.isFinished()) { 3512 final int restoreCount = canvas.save(); 3513 3514 canvas.translate(-width / 2 + scrollX, Math.min(0, scrollY)); 3515 mEdgeGlowTop.setSize(width * 2, height); 3516 invalidateForGlow |= mEdgeGlowTop.draw(canvas); 3517 canvas.restoreToCount(restoreCount); 3518 } 3519 if (!mEdgeGlowBottom.isFinished()) { 3520 final int restoreCount = canvas.save(); 3521 3522 canvas.translate(-width / 2 + scrollX, Math.max(computeMaxScrollY(), scrollY) + height); 3523 canvas.rotate(180, width, 0); 3524 mEdgeGlowBottom.setSize(width * 2, height); 3525 invalidateForGlow |= mEdgeGlowBottom.draw(canvas); 3526 canvas.restoreToCount(restoreCount); 3527 } 3528 if (!mEdgeGlowLeft.isFinished()) { 3529 final int restoreCount = canvas.save(); 3530 3531 canvas.rotate(270); 3532 canvas.translate(-height * 1.5f - scrollY, Math.min(0, scrollX)); 3533 mEdgeGlowLeft.setSize(height * 2, width); 3534 invalidateForGlow |= mEdgeGlowLeft.draw(canvas); 3535 canvas.restoreToCount(restoreCount); 3536 } 3537 if (!mEdgeGlowRight.isFinished()) { 3538 final int restoreCount = canvas.save(); 3539 3540 canvas.rotate(90); 3541 canvas.translate(-height / 2 + scrollY, 3542 -(Math.max(computeMaxScrollX(), scrollX) + width)); 3543 mEdgeGlowRight.setSize(height * 2, width); 3544 invalidateForGlow |= mEdgeGlowRight.draw(canvas); 3545 canvas.restoreToCount(restoreCount); 3546 } 3547 return invalidateForGlow; 3548 } 3549 3550 @Override 3551 public void setLayoutParams(ViewGroup.LayoutParams params) { 3552 if (params.height == LayoutParams.WRAP_CONTENT) { 3553 mWrapContent = true; 3554 } 3555 super.setLayoutParams(params); 3556 } 3557 3558 @Override 3559 public boolean performLongClick() { 3560 // performLongClick() is the result of a delayed message. If we switch 3561 // to windows overview, the WebView will be temporarily removed from the 3562 // view system. In that case, do nothing. 3563 if (getParent() == null) return false; 3564 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3565 // Send the click so that the textfield is in focus 3566 centerKeyPressOnTextField(); 3567 rebuildWebTextView(); 3568 } else { 3569 clearTextEntry(true); 3570 } 3571 if (inEditingMode()) { 3572 return mWebTextView.performLongClick(); 3573 } 3574 /* if long click brings up a context menu, the super function 3575 * returns true and we're done. Otherwise, nothing happened when 3576 * the user clicked. */ 3577 if (super.performLongClick()) { 3578 return true; 3579 } 3580 /* In the case where the application hasn't already handled the long 3581 * click action, look for a word under the click. If one is found, 3582 * animate the text selection into view. 3583 * FIXME: no animation code yet */ 3584 if (mSelectingText) return false; // long click does nothing on selection 3585 int x = viewToContentX((int) mLastTouchX + mScrollX); 3586 int y = viewToContentY((int) mLastTouchY + mScrollY); 3587 setUpSelect(); 3588 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3589 nativeSetExtendSelection(); 3590 WebChromeClient client = getWebChromeClient(); 3591 if (client != null) client.onSelectionStart(this); 3592 return true; 3593 } 3594 notifySelectDialogDismissed(); 3595 return false; 3596 } 3597 3598 boolean inAnimateZoom() { 3599 return mZoomScale != 0; 3600 } 3601 3602 /** 3603 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3604 * has changed. This is especially important for password fields, which are 3605 * drawn by the WebTextView, since it conveys more information than what 3606 * webkit draws. Thus we need to reposition it to show in the correct 3607 * place. 3608 */ 3609 private boolean mNeedToAdjustWebTextView; 3610 3611 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3612 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3613 Rect vBox = contentToViewRect(contentBounds); 3614 Rect visibleRect = new Rect(); 3615 calcOurVisibleRect(visibleRect); 3616 // If the textfield is on screen, place the WebTextView in 3617 // its new place, accounting for our new scroll/zoom values, 3618 // and adjust its textsize. 3619 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3620 : visibleRect.contains(vBox)) { 3621 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3622 vBox.height()); 3623 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3624 contentToViewDimension( 3625 nativeFocusCandidateTextSize())); 3626 return true; 3627 } else { 3628 // The textfield is now off screen. The user probably 3629 // was not zooming to see the textfield better. Remove 3630 // the WebTextView. If the user types a key, and the 3631 // textfield is still in focus, we will reconstruct 3632 // the WebTextView and scroll it back on screen. 3633 mWebTextView.remove(); 3634 return false; 3635 } 3636 } 3637 3638 private void drawExtras(Canvas canvas, int extras, boolean animationsRunning) { 3639 // If mNativeClass is 0, we should not reach here, so we do not 3640 // need to check it again. 3641 if (animationsRunning) { 3642 canvas.setDrawFilter(mWebViewCore.mZoomFilter); 3643 } 3644 nativeDrawExtras(canvas, extras); 3645 canvas.setDrawFilter(null); 3646 } 3647 3648 private void drawCoreAndCursorRing(Canvas canvas, int color, 3649 boolean drawCursorRing) { 3650 if (mDrawHistory) { 3651 canvas.scale(mActualScale, mActualScale); 3652 canvas.drawPicture(mHistoryPicture); 3653 return; 3654 } 3655 3656 boolean animateZoom = mZoomScale != 0; 3657 boolean animateScroll = ((!mScroller.isFinished() 3658 || mVelocityTracker != null) 3659 && (mTouchMode != TOUCH_DRAG_MODE || 3660 mHeldMotionless != MOTIONLESS_TRUE)) 3661 || mDeferTouchMode == TOUCH_DRAG_MODE; 3662 if (mTouchMode == TOUCH_DRAG_MODE) { 3663 if (mHeldMotionless == MOTIONLESS_PENDING) { 3664 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3665 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3666 mHeldMotionless = MOTIONLESS_FALSE; 3667 } 3668 if (mHeldMotionless == MOTIONLESS_FALSE) { 3669 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3670 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3671 mHeldMotionless = MOTIONLESS_PENDING; 3672 } 3673 } 3674 if (animateZoom) { 3675 float zoomScale; 3676 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3677 if (interval < ZOOM_ANIMATION_LENGTH) { 3678 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3679 zoomScale = 1.0f / (mInvInitialZoomScale 3680 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3681 invalidate(); 3682 } else { 3683 zoomScale = mZoomScale; 3684 // set mZoomScale to be 0 as we have done animation 3685 mZoomScale = 0; 3686 WebViewCore.resumeUpdatePicture(mWebViewCore); 3687 // call invalidate() again to draw with the final filters 3688 invalidate(); 3689 if (mNeedToAdjustWebTextView) { 3690 mNeedToAdjustWebTextView = false; 3691 if (didUpdateTextViewBounds(false) 3692 && nativeFocusCandidateIsPassword()) { 3693 // If it is a password field, start drawing the 3694 // WebTextView once again. 3695 mWebTextView.setInPassword(true); 3696 } 3697 } 3698 } 3699 // calculate the intermediate scroll position. As we need to use 3700 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3701 float scale = zoomScale * mInvInitialZoomScale; 3702 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3703 - mZoomCenterX); 3704 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3705 * zoomScale)) + mScrollX; 3706 int titleHeight = getTitleHeight(); 3707 int ty = Math.round(scale 3708 * (mInitialScrollY + mZoomCenterY - titleHeight) 3709 - (mZoomCenterY - titleHeight)); 3710 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3711 - titleHeight, getViewHeight(), Math.round(mContentHeight 3712 * zoomScale)) + titleHeight) + mScrollY; 3713 canvas.translate(tx, ty); 3714 canvas.scale(zoomScale, zoomScale); 3715 if (inEditingMode() && !mNeedToAdjustWebTextView 3716 && mZoomScale != 0) { 3717 // The WebTextView is up. Keep track of this so we can adjust 3718 // its size and placement when we finish zooming 3719 mNeedToAdjustWebTextView = true; 3720 // If it is in password mode, turn it off so it does not draw 3721 // misplaced. 3722 if (nativeFocusCandidateIsPassword()) { 3723 mWebTextView.setInPassword(false); 3724 } 3725 } 3726 } else { 3727 canvas.scale(mActualScale, mActualScale); 3728 } 3729 3730 boolean UIAnimationsRunning = false; 3731 // Currently for each draw we compute the animation values; 3732 // We may in the future decide to do that independently. 3733 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3734 UIAnimationsRunning = true; 3735 // If we have unfinished (or unstarted) animations, 3736 // we ask for a repaint. 3737 invalidate(); 3738 } 3739 mWebViewCore.drawContentPicture(canvas, color, 3740 (animateZoom || mPreviewZoomOnly || UIAnimationsRunning), 3741 animateScroll); 3742 if (mNativeClass == 0) return; 3743 // decide which adornments to draw 3744 int extras = DRAW_EXTRAS_NONE; 3745 if (mFindIsUp) { 3746 extras = DRAW_EXTRAS_FIND; 3747 } else if (mSelectingText) { 3748 extras = DRAW_EXTRAS_SELECTION; 3749 nativeSetSelectionPointer(mDrawSelectionPointer, 3750 mInvActualScale, 3751 mSelectX, mSelectY - getTitleHeight()); 3752 } else if (drawCursorRing) { 3753 extras = DRAW_EXTRAS_CURSOR_RING; 3754 } 3755 drawExtras(canvas, extras, UIAnimationsRunning); 3756 3757 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3758 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3759 mTouchMode = TOUCH_SHORTPRESS_MODE; 3760 } 3761 } 3762 if (mFocusSizeChanged) { 3763 mFocusSizeChanged = false; 3764 // If we are zooming, this will get handled above, when the zoom 3765 // finishes. We also do not need to do this unless the WebTextView 3766 // is showing. 3767 if (!animateZoom && inEditingMode()) { 3768 didUpdateTextViewBounds(true); 3769 } 3770 } 3771 } 3772 3773 // draw history 3774 private boolean mDrawHistory = false; 3775 private Picture mHistoryPicture = null; 3776 private int mHistoryWidth = 0; 3777 private int mHistoryHeight = 0; 3778 3779 // Only check the flag, can be called from WebCore thread 3780 boolean drawHistory() { 3781 return mDrawHistory; 3782 } 3783 3784 // Should only be called in UI thread 3785 void switchOutDrawHistory() { 3786 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3787 if (mDrawHistory && mWebViewCore.pictureReady()) { 3788 mDrawHistory = false; 3789 mHistoryPicture = null; 3790 invalidate(); 3791 int oldScrollX = mScrollX; 3792 int oldScrollY = mScrollY; 3793 mScrollX = pinLocX(mScrollX); 3794 mScrollY = pinLocY(mScrollY); 3795 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3796 mUserScroll = false; 3797 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3798 oldScrollY); 3799 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3800 } else { 3801 sendOurVisibleRect(); 3802 } 3803 } 3804 } 3805 3806 WebViewCore.CursorData cursorData() { 3807 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3808 result.mMoveGeneration = nativeMoveGeneration(); 3809 result.mFrame = nativeCursorFramePointer(); 3810 Point position = nativeCursorPosition(); 3811 result.mX = position.x; 3812 result.mY = position.y; 3813 return result; 3814 } 3815 3816 /** 3817 * Delete text from start to end in the focused textfield. If there is no 3818 * focus, or if start == end, silently fail. If start and end are out of 3819 * order, swap them. 3820 * @param start Beginning of selection to delete. 3821 * @param end End of selection to delete. 3822 */ 3823 /* package */ void deleteSelection(int start, int end) { 3824 mTextGeneration++; 3825 WebViewCore.TextSelectionData data 3826 = new WebViewCore.TextSelectionData(start, end); 3827 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3828 data); 3829 } 3830 3831 /** 3832 * Set the selection to (start, end) in the focused textfield. If start and 3833 * end are out of order, swap them. 3834 * @param start Beginning of selection. 3835 * @param end End of selection. 3836 */ 3837 /* package */ void setSelection(int start, int end) { 3838 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3839 } 3840 3841 @Override 3842 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3843 InputConnection connection = super.onCreateInputConnection(outAttrs); 3844 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3845 return connection; 3846 } 3847 3848 /** 3849 * Called in response to a message from webkit telling us that the soft 3850 * keyboard should be launched. 3851 */ 3852 private void displaySoftKeyboard(boolean isTextView) { 3853 InputMethodManager imm = (InputMethodManager) 3854 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3855 3856 // bring it back to the default scale so that user can enter text 3857 boolean zoom = mActualScale < mDefaultScale; 3858 if (zoom) { 3859 mInZoomOverview = false; 3860 mZoomCenterX = mLastTouchX; 3861 mZoomCenterY = mLastTouchY; 3862 // do not change text wrap scale so that there is no reflow 3863 setNewZoomScale(mDefaultScale, false, false); 3864 } 3865 if (isTextView) { 3866 rebuildWebTextView(); 3867 if (inEditingMode()) { 3868 imm.showSoftInput(mWebTextView, 0); 3869 if (zoom) { 3870 didUpdateTextViewBounds(true); 3871 } 3872 return; 3873 } 3874 } 3875 // Used by plugins. 3876 // Also used if the navigation cache is out of date, and 3877 // does not recognize that a textfield is in focus. In that 3878 // case, use WebView as the targeted view. 3879 // see http://b/issue?id=2457459 3880 imm.showSoftInput(this, 0); 3881 } 3882 3883 // Called by WebKit to instruct the UI to hide the keyboard 3884 private void hideSoftKeyboard() { 3885 InputMethodManager imm = (InputMethodManager) 3886 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3887 3888 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3889 } 3890 3891 /* 3892 * This method checks the current focus and cursor and potentially rebuilds 3893 * mWebTextView to have the appropriate properties, such as password, 3894 * multiline, and what text it contains. It also removes it if necessary. 3895 */ 3896 /* package */ void rebuildWebTextView() { 3897 // If the WebView does not have focus, do nothing until it gains focus. 3898 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3899 return; 3900 } 3901 boolean alreadyThere = inEditingMode(); 3902 // inEditingMode can only return true if mWebTextView is non-null, 3903 // so we can safely call remove() if (alreadyThere) 3904 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3905 if (alreadyThere) { 3906 mWebTextView.remove(); 3907 } 3908 return; 3909 } 3910 // At this point, we know we have found an input field, so go ahead 3911 // and create the WebTextView if necessary. 3912 if (mWebTextView == null) { 3913 mWebTextView = new WebTextView(mContext, WebView.this); 3914 // Initialize our generation number. 3915 mTextGeneration = 0; 3916 } 3917 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3918 contentToViewDimension(nativeFocusCandidateTextSize())); 3919 Rect visibleRect = new Rect(); 3920 calcOurContentVisibleRect(visibleRect); 3921 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3922 // should be in content coordinates. 3923 Rect bounds = nativeFocusCandidateNodeBounds(); 3924 Rect vBox = contentToViewRect(bounds); 3925 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3926 if (!Rect.intersects(bounds, visibleRect)) { 3927 mWebTextView.bringIntoView(); 3928 } 3929 String text = nativeFocusCandidateText(); 3930 int nodePointer = nativeFocusCandidatePointer(); 3931 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3932 // It is possible that we have the same textfield, but it has moved, 3933 // i.e. In the case of opening/closing the screen. 3934 // In that case, we need to set the dimensions, but not the other 3935 // aspects. 3936 // If the text has been changed by webkit, update it. However, if 3937 // there has been more UI text input, ignore it. We will receive 3938 // another update when that text is recognized. 3939 if (text != null && !text.equals(mWebTextView.getText().toString()) 3940 && nativeTextGeneration() == mTextGeneration) { 3941 mWebTextView.setTextAndKeepSelection(text); 3942 } 3943 } else { 3944 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3945 Gravity.RIGHT : Gravity.NO_GRAVITY); 3946 // This needs to be called before setType, which may call 3947 // requestFormData, and it needs to have the correct nodePointer. 3948 mWebTextView.setNodePointer(nodePointer); 3949 mWebTextView.setType(nativeFocusCandidateType()); 3950 if (null == text) { 3951 if (DebugFlags.WEB_VIEW) { 3952 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3953 } 3954 text = ""; 3955 } 3956 mWebTextView.setTextAndKeepSelection(text); 3957 InputMethodManager imm = InputMethodManager.peekInstance(); 3958 if (imm != null && imm.isActive(mWebTextView)) { 3959 imm.restartInput(mWebTextView); 3960 } 3961 } 3962 mWebTextView.requestFocus(); 3963 } 3964 3965 /** 3966 * Called by WebTextView to find saved form data associated with the 3967 * textfield 3968 * @param name Name of the textfield. 3969 * @param nodePointer Pointer to the node of the textfield, so it can be 3970 * compared to the currently focused textfield when the data is 3971 * retrieved. 3972 */ 3973 /* package */ void requestFormData(String name, int nodePointer) { 3974 if (mWebViewCore.getSettings().getSaveFormData()) { 3975 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3976 update.arg1 = nodePointer; 3977 RequestFormData updater = new RequestFormData(name, getUrl(), 3978 update); 3979 Thread t = new Thread(updater); 3980 t.start(); 3981 } 3982 } 3983 3984 /** 3985 * Pass a message to find out the <label> associated with the <input> 3986 * identified by nodePointer 3987 * @param framePointer Pointer to the frame containing the <input> node 3988 * @param nodePointer Pointer to the node for which a <label> is desired. 3989 */ 3990 /* package */ void requestLabel(int framePointer, int nodePointer) { 3991 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3992 nodePointer); 3993 } 3994 3995 /* 3996 * This class requests an Adapter for the WebTextView which shows past 3997 * entries stored in the database. It is a Runnable so that it can be done 3998 * in its own thread, without slowing down the UI. 3999 */ 4000 private class RequestFormData implements Runnable { 4001 private String mName; 4002 private String mUrl; 4003 private Message mUpdateMessage; 4004 4005 public RequestFormData(String name, String url, Message msg) { 4006 mName = name; 4007 mUrl = url; 4008 mUpdateMessage = msg; 4009 } 4010 4011 public void run() { 4012 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 4013 if (pastEntries.size() > 0) { 4014 AutoCompleteAdapter adapter = new 4015 AutoCompleteAdapter(mContext, pastEntries); 4016 mUpdateMessage.obj = adapter; 4017 mUpdateMessage.sendToTarget(); 4018 } 4019 } 4020 } 4021 4022 /** 4023 * Dump the display tree to "/sdcard/displayTree.txt" 4024 * 4025 * @hide debug only 4026 */ 4027 public void dumpDisplayTree() { 4028 nativeDumpDisplayTree(getUrl()); 4029 } 4030 4031 /** 4032 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4033 * "/sdcard/domTree.txt" 4034 * 4035 * @hide debug only 4036 */ 4037 public void dumpDomTree(boolean toFile) { 4038 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4039 } 4040 4041 /** 4042 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4043 * to "/sdcard/renderTree.txt" 4044 * 4045 * @hide debug only 4046 */ 4047 public void dumpRenderTree(boolean toFile) { 4048 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4049 } 4050 4051 /** 4052 * Dump the V8 counters to standard output. 4053 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4054 * true. Otherwise, this will do nothing. 4055 * 4056 * @hide debug only 4057 */ 4058 public void dumpV8Counters() { 4059 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4060 } 4061 4062 // This is used to determine long press with the center key. Does not 4063 // affect long press with the trackball/touch. 4064 private boolean mGotCenterDown = false; 4065 4066 @Override 4067 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4068 // send complex characters to webkit for use by JS and plugins 4069 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4070 // pass the key to DOM 4071 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4072 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4073 // return true as DOM handles the key 4074 return true; 4075 } 4076 return false; 4077 } 4078 4079 @Override 4080 public boolean onKeyDown(int keyCode, KeyEvent event) { 4081 if (DebugFlags.WEB_VIEW) { 4082 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4083 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4084 } 4085 4086 if (mNativeClass == 0) { 4087 return false; 4088 } 4089 4090 // do this hack up front, so it always works, regardless of touch-mode 4091 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4092 mAutoRedraw = !mAutoRedraw; 4093 if (mAutoRedraw) { 4094 invalidate(); 4095 } 4096 return true; 4097 } 4098 4099 // Bubble up the key event if 4100 // 1. it is a system key; or 4101 // 2. the host application wants to handle it; 4102 if (event.isSystem() 4103 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4104 return false; 4105 } 4106 4107 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4108 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4109 if (nativeFocusIsPlugin()) { 4110 mShiftIsPressed = true; 4111 } else if (!nativeCursorWantsKeyEvents() && !mSelectingText) { 4112 setUpSelect(); 4113 } 4114 } 4115 4116 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4117 pageUp(false); 4118 return true; 4119 } 4120 4121 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4122 pageDown(false); 4123 return true; 4124 } 4125 4126 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4127 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4128 switchOutDrawHistory(); 4129 if (nativeFocusIsPlugin()) { 4130 letPluginHandleNavKey(keyCode, event.getEventTime(), true); 4131 return true; 4132 } 4133 if (mSelectingText) { 4134 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4135 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4136 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4137 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4138 int multiplier = event.getRepeatCount() + 1; 4139 moveSelection(xRate * multiplier, yRate * multiplier); 4140 return true; 4141 } 4142 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4143 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4144 return true; 4145 } 4146 // Bubble up the key event as WebView doesn't handle it 4147 return false; 4148 } 4149 4150 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4151 switchOutDrawHistory(); 4152 if (event.getRepeatCount() == 0) { 4153 if (mSelectingText) { 4154 return true; // discard press if copy in progress 4155 } 4156 mGotCenterDown = true; 4157 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4158 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4159 // Already checked mNativeClass, so we do not need to check it 4160 // again. 4161 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4162 return true; 4163 } 4164 // Bubble up the key event as WebView doesn't handle it 4165 return false; 4166 } 4167 4168 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 4169 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 4170 // turn off copy select if a shift-key combo is pressed 4171 selectionDone(); 4172 mShiftIsPressed = false; 4173 } 4174 4175 if (getSettings().getNavDump()) { 4176 switch (keyCode) { 4177 case KeyEvent.KEYCODE_4: 4178 dumpDisplayTree(); 4179 break; 4180 case KeyEvent.KEYCODE_5: 4181 case KeyEvent.KEYCODE_6: 4182 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4183 break; 4184 case KeyEvent.KEYCODE_7: 4185 case KeyEvent.KEYCODE_8: 4186 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4187 break; 4188 case KeyEvent.KEYCODE_9: 4189 nativeInstrumentReport(); 4190 return true; 4191 } 4192 } 4193 4194 if (nativeCursorIsTextInput()) { 4195 // This message will put the node in focus, for the DOM's notion 4196 // of focus, and make the focuscontroller active 4197 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 4198 nativeCursorNodePointer()); 4199 // This will bring up the WebTextView and put it in focus, for 4200 // our view system's notion of focus 4201 rebuildWebTextView(); 4202 // Now we need to pass the event to it 4203 if (inEditingMode()) { 4204 mWebTextView.setDefaultSelection(); 4205 return mWebTextView.dispatchKeyEvent(event); 4206 } 4207 } else if (nativeHasFocusNode()) { 4208 // In this case, the cursor is not on a text input, but the focus 4209 // might be. Check it, and if so, hand over to the WebTextView. 4210 rebuildWebTextView(); 4211 if (inEditingMode()) { 4212 mWebTextView.setDefaultSelection(); 4213 return mWebTextView.dispatchKeyEvent(event); 4214 } 4215 } 4216 4217 // TODO: should we pass all the keys to DOM or check the meta tag 4218 if (nativeCursorWantsKeyEvents() || true) { 4219 // pass the key to DOM 4220 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4221 // return true as DOM handles the key 4222 return true; 4223 } 4224 4225 // Bubble up the key event as WebView doesn't handle it 4226 return false; 4227 } 4228 4229 @Override 4230 public boolean onKeyUp(int keyCode, KeyEvent event) { 4231 if (DebugFlags.WEB_VIEW) { 4232 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4233 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4234 } 4235 4236 if (mNativeClass == 0) { 4237 return false; 4238 } 4239 4240 // special CALL handling when cursor node's href is "tel:XXX" 4241 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4242 String text = nativeCursorText(); 4243 if (!nativeCursorIsTextInput() && text != null 4244 && text.startsWith(SCHEME_TEL)) { 4245 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4246 getContext().startActivity(intent); 4247 return true; 4248 } 4249 } 4250 4251 // Bubble up the key event if 4252 // 1. it is a system key; or 4253 // 2. the host application wants to handle it; 4254 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 4255 return false; 4256 } 4257 4258 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4259 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4260 if (nativeFocusIsPlugin()) { 4261 mShiftIsPressed = false; 4262 } else if (copySelection()) { 4263 selectionDone(); 4264 return true; 4265 } 4266 } 4267 4268 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4269 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4270 if (nativeFocusIsPlugin()) { 4271 letPluginHandleNavKey(keyCode, event.getEventTime(), false); 4272 return true; 4273 } 4274 // always handle the navigation keys in the UI thread 4275 // Bubble up the key event as WebView doesn't handle it 4276 return false; 4277 } 4278 4279 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4280 // remove the long press message first 4281 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4282 mGotCenterDown = false; 4283 4284 if (mSelectingText) { 4285 if (mExtendSelection) { 4286 copySelection(); 4287 selectionDone(); 4288 } else { 4289 mExtendSelection = true; 4290 nativeSetExtendSelection(); 4291 invalidate(); // draw the i-beam instead of the arrow 4292 } 4293 return true; // discard press if copy in progress 4294 } 4295 4296 // perform the single click 4297 Rect visibleRect = sendOurVisibleRect(); 4298 // Note that sendOurVisibleRect calls viewToContent, so the 4299 // coordinates should be in content coordinates. 4300 if (!nativeCursorIntersects(visibleRect)) { 4301 return false; 4302 } 4303 WebViewCore.CursorData data = cursorData(); 4304 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4305 playSoundEffect(SoundEffectConstants.CLICK); 4306 if (nativeCursorIsTextInput()) { 4307 rebuildWebTextView(); 4308 centerKeyPressOnTextField(); 4309 if (inEditingMode()) { 4310 mWebTextView.setDefaultSelection(); 4311 } 4312 return true; 4313 } 4314 clearTextEntry(true); 4315 nativeSetFollowedLink(true); 4316 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4317 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4318 nativeCursorNodePointer()); 4319 } 4320 return true; 4321 } 4322 4323 // TODO: should we pass all the keys to DOM or check the meta tag 4324 if (nativeCursorWantsKeyEvents() || true) { 4325 // pass the key to DOM 4326 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4327 // return true as DOM handles the key 4328 return true; 4329 } 4330 4331 // Bubble up the key event as WebView doesn't handle it 4332 return false; 4333 } 4334 4335 /** 4336 * @hide pending API council approval. 4337 */ 4338 public void setUpSelect() { 4339 if (0 == mNativeClass) return; // client isn't initialized 4340 if (inFullScreenMode()) return; 4341 if (mSelectingText) return; 4342 mExtendSelection = false; 4343 mSelectingText = mDrawSelectionPointer = true; 4344 // don't let the picture change during text selection 4345 WebViewCore.pauseUpdatePicture(mWebViewCore); 4346 nativeResetSelection(); 4347 if (nativeHasCursorNode()) { 4348 Rect rect = nativeCursorNodeBounds(); 4349 mSelectX = contentToViewX(rect.left); 4350 mSelectY = contentToViewY(rect.top); 4351 } else if (mLastTouchY > getVisibleTitleHeight()) { 4352 mSelectX = mScrollX + (int) mLastTouchX; 4353 mSelectY = mScrollY + (int) mLastTouchY; 4354 } else { 4355 mSelectX = mScrollX + getViewWidth() / 2; 4356 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4357 } 4358 nativeHideCursor(); 4359 } 4360 4361 /** 4362 * Use this method to put the WebView into text selection mode. 4363 * Do not rely on this functionality; it will be deprecated in the future. 4364 */ 4365 public void emulateShiftHeld() { 4366 setUpSelect(); 4367 } 4368 4369 /** 4370 * @hide pending API council approval. 4371 */ 4372 public void selectAll() { 4373 if (0 == mNativeClass) return; // client isn't initialized 4374 if (inFullScreenMode()) return; 4375 if (!mSelectingText) setUpSelect(); 4376 nativeSelectAll(); 4377 mDrawSelectionPointer = false; 4378 mExtendSelection = true; 4379 invalidate(); 4380 } 4381 4382 /** 4383 * @hide pending API council approval. 4384 */ 4385 public boolean selectDialogIsUp() { 4386 return mSelectingText; 4387 } 4388 4389 /** 4390 * @hide pending API council approval. 4391 */ 4392 public void notifySelectDialogDismissed() { 4393 mSelectingText = false; 4394 WebViewCore.resumeUpdatePicture(mWebViewCore); 4395 } 4396 4397 /** 4398 * @hide pending API council approval. 4399 */ 4400 public void selectionDone() { 4401 if (mSelectingText) { 4402 WebChromeClient client = getWebChromeClient(); 4403 if (client != null) client.onSelectionDone(this); 4404 invalidate(); // redraw without selection 4405 notifySelectDialogDismissed(); 4406 } 4407 } 4408 4409 /** 4410 * @hide pending API council approval. 4411 */ 4412 public boolean copySelection() { 4413 boolean copiedSomething = false; 4414 String selection = getSelection(); 4415 if (selection != "") { 4416 if (DebugFlags.WEB_VIEW) { 4417 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4418 } 4419 Toast.makeText(mContext 4420 , com.android.internal.R.string.text_copied 4421 , Toast.LENGTH_SHORT).show(); 4422 copiedSomething = true; 4423 try { 4424 IClipboard clip = IClipboard.Stub.asInterface( 4425 ServiceManager.getService("clipboard")); 4426 clip.setClipboardText(selection); 4427 } catch (android.os.RemoteException e) { 4428 Log.e(LOGTAG, "Clipboard failed", e); 4429 } 4430 } 4431 invalidate(); // remove selection region and pointer 4432 return copiedSomething; 4433 } 4434 4435 /** 4436 * @hide pending API council approval. 4437 */ 4438 public String getSelection() { 4439 if (mNativeClass == 0) return ""; 4440 return nativeGetSelection(); 4441 } 4442 4443 @Override 4444 protected void onAttachedToWindow() { 4445 super.onAttachedToWindow(); 4446 if (hasWindowFocus()) setActive(true); 4447 } 4448 4449 @Override 4450 protected void onDetachedFromWindow() { 4451 clearHelpers(); 4452 dismissZoomControl(); 4453 if (hasWindowFocus()) setActive(false); 4454 super.onDetachedFromWindow(); 4455 } 4456 4457 /** 4458 * @deprecated WebView no longer needs to implement 4459 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4460 */ 4461 @Deprecated 4462 public void onChildViewAdded(View parent, View child) {} 4463 4464 /** 4465 * @deprecated WebView no longer needs to implement 4466 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4467 */ 4468 @Deprecated 4469 public void onChildViewRemoved(View p, View child) {} 4470 4471 /** 4472 * @deprecated WebView should not have implemented 4473 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4474 * does nothing now. 4475 */ 4476 @Deprecated 4477 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4478 } 4479 4480 private void setActive(boolean active) { 4481 if (active) { 4482 if (hasFocus()) { 4483 // If our window regained focus, and we have focus, then begin 4484 // drawing the cursor ring 4485 mDrawCursorRing = true; 4486 if (mNativeClass != 0) { 4487 nativeRecordButtons(true, false, true); 4488 if (inEditingMode()) { 4489 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4490 } 4491 } 4492 } else { 4493 // If our window gained focus, but we do not have it, do not 4494 // draw the cursor ring. 4495 mDrawCursorRing = false; 4496 // We do not call nativeRecordButtons here because we assume 4497 // that when we lost focus, or window focus, it got called with 4498 // false for the first parameter 4499 } 4500 } else { 4501 if (mWebViewCore != null && getSettings().getBuiltInZoomControls() 4502 && (mZoomButtonsController == null || 4503 !mZoomButtonsController.isVisible())) { 4504 /* 4505 * The zoom controls come in their own window, so our window 4506 * loses focus. Our policy is to not draw the cursor ring if 4507 * our window is not focused, but this is an exception since 4508 * the user can still navigate the web page with the zoom 4509 * controls showing. 4510 */ 4511 // If our window has lost focus, stop drawing the cursor ring 4512 mDrawCursorRing = false; 4513 } 4514 mGotKeyDown = false; 4515 mShiftIsPressed = false; 4516 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4517 mTouchMode = TOUCH_DONE_MODE; 4518 if (mNativeClass != 0) { 4519 nativeRecordButtons(false, false, true); 4520 } 4521 setFocusControllerInactive(); 4522 } 4523 invalidate(); 4524 } 4525 4526 // To avoid drawing the cursor ring, and remove the TextView when our window 4527 // loses focus. 4528 @Override 4529 public void onWindowFocusChanged(boolean hasWindowFocus) { 4530 setActive(hasWindowFocus); 4531 if (hasWindowFocus) { 4532 JWebCoreJavaBridge.setActiveWebView(this); 4533 } else { 4534 JWebCoreJavaBridge.removeActiveWebView(this); 4535 } 4536 super.onWindowFocusChanged(hasWindowFocus); 4537 } 4538 4539 /* 4540 * Pass a message to WebCore Thread, telling the WebCore::Page's 4541 * FocusController to be "inactive" so that it will 4542 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4543 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4544 */ 4545 /* package */ void setFocusControllerInactive() { 4546 // Do not need to also check whether mWebViewCore is null, because 4547 // mNativeClass is only set if mWebViewCore is non null 4548 if (mNativeClass == 0) return; 4549 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4550 } 4551 4552 @Override 4553 protected void onFocusChanged(boolean focused, int direction, 4554 Rect previouslyFocusedRect) { 4555 if (DebugFlags.WEB_VIEW) { 4556 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4557 } 4558 if (focused) { 4559 // When we regain focus, if we have window focus, resume drawing 4560 // the cursor ring 4561 if (hasWindowFocus()) { 4562 mDrawCursorRing = true; 4563 if (mNativeClass != 0) { 4564 nativeRecordButtons(true, false, true); 4565 } 4566 //} else { 4567 // The WebView has gained focus while we do not have 4568 // windowfocus. When our window lost focus, we should have 4569 // called nativeRecordButtons(false...) 4570 } 4571 } else { 4572 // When we lost focus, unless focus went to the TextView (which is 4573 // true if we are in editing mode), stop drawing the cursor ring. 4574 if (!inEditingMode()) { 4575 mDrawCursorRing = false; 4576 if (mNativeClass != 0) { 4577 nativeRecordButtons(false, false, true); 4578 } 4579 setFocusControllerInactive(); 4580 } 4581 mGotKeyDown = false; 4582 } 4583 4584 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4585 } 4586 4587 /** 4588 * @hide 4589 */ 4590 @Override 4591 protected boolean setFrame(int left, int top, int right, int bottom) { 4592 boolean changed = super.setFrame(left, top, right, bottom); 4593 if (!changed && mHeightCanMeasure) { 4594 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4595 // in WebViewCore after we get the first layout. We do call 4596 // requestLayout() when we get contentSizeChanged(). But the View 4597 // system won't call onSizeChanged if the dimension is not changed. 4598 // In this case, we need to call sendViewSizeZoom() explicitly to 4599 // notify the WebKit about the new dimensions. 4600 sendViewSizeZoom(); 4601 } 4602 return changed; 4603 } 4604 4605 private static class PostScale implements Runnable { 4606 final WebView mWebView; 4607 final boolean mUpdateTextWrap; 4608 4609 public PostScale(WebView webView, boolean updateTextWrap) { 4610 mWebView = webView; 4611 mUpdateTextWrap = updateTextWrap; 4612 } 4613 4614 public void run() { 4615 if (mWebView.mWebViewCore != null) { 4616 // we always force, in case our height changed, in which case we 4617 // still want to send the notification over to webkit. 4618 mWebView.setNewZoomScale(mWebView.mActualScale, 4619 mUpdateTextWrap, true); 4620 // update the zoom buttons as the scale can be changed 4621 if (mWebView.getSettings().getBuiltInZoomControls()) { 4622 mWebView.updateZoomButtonsEnabled(); 4623 } 4624 } 4625 } 4626 } 4627 4628 @Override 4629 protected void onSizeChanged(int w, int h, int ow, int oh) { 4630 super.onSizeChanged(w, h, ow, oh); 4631 // Center zooming to the center of the screen. 4632 if (mZoomScale == 0) { // unless we're already zooming 4633 // To anchor at top left corner. 4634 mZoomCenterX = 0; 4635 mZoomCenterY = getVisibleTitleHeight(); 4636 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4637 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4638 } 4639 4640 // adjust the max viewport width depending on the view dimensions. This 4641 // is to ensure the scaling is not going insane. So do not shrink it if 4642 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4643 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4644 if (newMaxViewportWidth > sMaxViewportWidth) { 4645 sMaxViewportWidth = newMaxViewportWidth; 4646 } 4647 4648 // update mMinZoomScale if the minimum zoom scale is not fixed 4649 if (!mMinZoomScaleFixed) { 4650 // when change from narrow screen to wide screen, the new viewWidth 4651 // can be wider than the old content width. We limit the minimum 4652 // scale to 1.0f. The proper minimum scale will be calculated when 4653 // the new picture shows up. 4654 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4655 / (mDrawHistory ? mHistoryPicture.getWidth() 4656 : mZoomOverviewWidth)); 4657 if (mInitialScaleInPercent > 0) { 4658 // limit the minZoomScale to the initialScale if it is set 4659 float initialScale = mInitialScaleInPercent / 100.0f; 4660 if (mMinZoomScale > initialScale) { 4661 mMinZoomScale = initialScale; 4662 } 4663 } 4664 } 4665 4666 dismissZoomControl(); 4667 4668 // onSizeChanged() is called during WebView layout. And any 4669 // requestLayout() is blocked during layout. As setNewZoomScale() will 4670 // call its child View to reposition itself through ViewManager's 4671 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4672 // <b/> 4673 // only update the text wrap scale if width changed. 4674 post(new PostScale(this, w != ow)); 4675 } 4676 4677 @Override 4678 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4679 super.onScrollChanged(l, t, oldl, oldt); 4680 if (!mInOverScrollMode) { 4681 sendOurVisibleRect(); 4682 // update WebKit if visible title bar height changed. The logic is same 4683 // as getVisibleTitleHeight. 4684 int titleHeight = getTitleHeight(); 4685 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4686 sendViewSizeZoom(); 4687 } 4688 } 4689 } 4690 4691 @Override 4692 public boolean dispatchKeyEvent(KeyEvent event) { 4693 boolean dispatch = true; 4694 4695 // Textfields and plugins need to receive the shift up key even if 4696 // another key was released while the shift key was held down. 4697 if (!inEditingMode() && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 4698 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4699 mGotKeyDown = true; 4700 } else { 4701 if (!mGotKeyDown) { 4702 /* 4703 * We got a key up for which we were not the recipient of 4704 * the original key down. Don't give it to the view. 4705 */ 4706 dispatch = false; 4707 } 4708 mGotKeyDown = false; 4709 } 4710 } 4711 4712 if (dispatch) { 4713 return super.dispatchKeyEvent(event); 4714 } else { 4715 // We didn't dispatch, so let something else handle the key 4716 return false; 4717 } 4718 } 4719 4720 // Here are the snap align logic: 4721 // 1. If it starts nearly horizontally or vertically, snap align; 4722 // 2. If there is a dramitic direction change, let it go; 4723 // 3. If there is a same direction back and forth, lock it. 4724 4725 // adjustable parameters 4726 private int mMinLockSnapReverseDistance; 4727 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4728 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4729 4730 private static int sign(float x) { 4731 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4732 } 4733 4734 // if the page can scroll <= this value, we won't allow the drag tracker 4735 // to have any effect. 4736 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4737 4738 private class DragTrackerHandler { 4739 private final DragTracker mProxy; 4740 private final float mStartY, mStartX; 4741 private final float mMinDY, mMinDX; 4742 private final float mMaxDY, mMaxDX; 4743 private float mCurrStretchY, mCurrStretchX; 4744 private int mSX, mSY; 4745 private Interpolator mInterp; 4746 private float[] mXY = new float[2]; 4747 4748 // inner (non-state) classes can't have enums :( 4749 private static final int DRAGGING_STATE = 0; 4750 private static final int ANIMATING_STATE = 1; 4751 private static final int FINISHED_STATE = 2; 4752 private int mState; 4753 4754 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4755 mProxy = proxy; 4756 4757 int docBottom = computeRealVerticalScrollRange() + getTitleHeight(); 4758 int viewTop = getScrollY(); 4759 int viewBottom = viewTop + getHeight(); 4760 4761 mStartY = y; 4762 mMinDY = -viewTop; 4763 mMaxDY = docBottom - viewBottom; 4764 4765 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4766 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4767 " up/down= " + mMinDY + " " + mMaxDY); 4768 } 4769 4770 int docRight = computeRealHorizontalScrollRange(); 4771 int viewLeft = getScrollX(); 4772 int viewRight = viewLeft + getWidth(); 4773 mStartX = x; 4774 mMinDX = -viewLeft; 4775 mMaxDX = docRight - viewRight; 4776 4777 mState = DRAGGING_STATE; 4778 mProxy.onStartDrag(x, y); 4779 4780 // ensure we buildBitmap at least once 4781 mSX = -99999; 4782 } 4783 4784 private float computeStretch(float delta, float min, float max) { 4785 float stretch = 0; 4786 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4787 if (delta < min) { 4788 stretch = delta - min; 4789 } else if (delta > max) { 4790 stretch = delta - max; 4791 } 4792 } 4793 return stretch; 4794 } 4795 4796 public void dragTo(float x, float y) { 4797 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4798 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4799 4800 if ((mSnapScrollMode & SNAP_X) != 0) { 4801 sy = 0; 4802 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4803 sx = 0; 4804 } 4805 4806 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4807 mCurrStretchX = sx; 4808 mCurrStretchY = sy; 4809 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4810 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4811 " " + sy); 4812 } 4813 if (mProxy.onStretchChange(sx, sy)) { 4814 invalidate(); 4815 } 4816 } 4817 } 4818 4819 public void stopDrag() { 4820 final int DURATION = 200; 4821 int now = (int)SystemClock.uptimeMillis(); 4822 mInterp = new Interpolator(2); 4823 mXY[0] = mCurrStretchX; 4824 mXY[1] = mCurrStretchY; 4825 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4826 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4827 mInterp.setKeyFrame(0, now, mXY, blend); 4828 float[] zerozero = new float[] { 0, 0 }; 4829 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4830 mState = ANIMATING_STATE; 4831 4832 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4833 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4834 } 4835 } 4836 4837 // Call this after each draw. If it ruturns null, the tracker is done 4838 public boolean isFinished() { 4839 return mState == FINISHED_STATE; 4840 } 4841 4842 private int hiddenHeightOfTitleBar() { 4843 return getTitleHeight() - getVisibleTitleHeight(); 4844 } 4845 4846 // need a way to know if 565 or 8888 is the right config for 4847 // capturing the display and giving it to the drag proxy 4848 private Bitmap.Config offscreenBitmapConfig() { 4849 // hard code 565 for now 4850 return Bitmap.Config.RGB_565; 4851 } 4852 4853 /* If the tracker draws, then this returns true, otherwise it will 4854 return false, and draw nothing. 4855 */ 4856 public boolean draw(Canvas canvas) { 4857 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4858 int sx = getScrollX(); 4859 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4860 if (mSX != sx || mSY != sy) { 4861 buildBitmap(sx, sy); 4862 mSX = sx; 4863 mSY = sy; 4864 } 4865 4866 if (mState == ANIMATING_STATE) { 4867 Interpolator.Result result = mInterp.timeToValues(mXY); 4868 if (result == Interpolator.Result.FREEZE_END) { 4869 mState = FINISHED_STATE; 4870 return false; 4871 } else { 4872 mProxy.onStretchChange(mXY[0], mXY[1]); 4873 invalidate(); 4874 // fall through to the draw 4875 } 4876 } 4877 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4878 canvas.translate(sx, sy); 4879 mProxy.onDraw(canvas); 4880 canvas.restoreToCount(count); 4881 return true; 4882 } 4883 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4884 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4885 mCurrStretchX + " " + mCurrStretchY); 4886 } 4887 return false; 4888 } 4889 4890 private void buildBitmap(int sx, int sy) { 4891 int w = getWidth(); 4892 int h = getViewHeight(); 4893 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4894 Canvas canvas = new Canvas(bm); 4895 canvas.translate(-sx, -sy); 4896 drawContent(canvas); 4897 4898 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4899 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4900 " " + sy + " " + w + " " + h); 4901 } 4902 mProxy.onBitmapChange(bm); 4903 } 4904 } 4905 4906 /** @hide */ 4907 public static class DragTracker { 4908 public void onStartDrag(float x, float y) {} 4909 public boolean onStretchChange(float sx, float sy) { 4910 // return true to have us inval the view 4911 return false; 4912 } 4913 public void onStopDrag() {} 4914 public void onBitmapChange(Bitmap bm) {} 4915 public void onDraw(Canvas canvas) {} 4916 } 4917 4918 /** @hide */ 4919 public DragTracker getDragTracker() { 4920 return mDragTracker; 4921 } 4922 4923 /** @hide */ 4924 public void setDragTracker(DragTracker tracker) { 4925 mDragTracker = tracker; 4926 } 4927 4928 private DragTracker mDragTracker; 4929 private DragTrackerHandler mDragTrackerHandler; 4930 4931 private class ScaleDetectorListener implements 4932 ScaleGestureDetector.OnScaleGestureListener { 4933 4934 public boolean onScaleBegin(ScaleGestureDetector detector) { 4935 // cancel the single touch handling 4936 cancelTouch(); 4937 dismissZoomControl(); 4938 // reset the zoom overview mode so that the page won't auto grow 4939 mInZoomOverview = false; 4940 // If it is in password mode, turn it off so it does not draw 4941 // misplaced. 4942 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4943 mWebTextView.setInPassword(false); 4944 } 4945 4946 mViewManager.startZoom(); 4947 4948 return true; 4949 } 4950 4951 public void onScaleEnd(ScaleGestureDetector detector) { 4952 if (mPreviewZoomOnly) { 4953 mPreviewZoomOnly = false; 4954 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4955 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4956 // don't reflow when zoom in; when zoom out, do reflow if the 4957 // new scale is almost minimum scale; 4958 boolean reflowNow = (mActualScale - mMinZoomScale 4959 <= MINIMUM_SCALE_INCREMENT) 4960 || ((mActualScale <= 0.8 * mTextWrapScale)); 4961 // force zoom after mPreviewZoomOnly is set to false so that the 4962 // new view size will be passed to the WebKit 4963 setNewZoomScale(mActualScale, reflowNow, true); 4964 // call invalidate() to draw without zoom filter 4965 invalidate(); 4966 } 4967 // adjust the edit text view if needed 4968 if (inEditingMode() && didUpdateTextViewBounds(false) 4969 && nativeFocusCandidateIsPassword()) { 4970 // If it is a password field, start drawing the 4971 // WebTextView once again. 4972 mWebTextView.setInPassword(true); 4973 } 4974 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4975 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4976 // may trigger the unwanted fling. 4977 mTouchMode = TOUCH_PINCH_DRAG; 4978 mConfirmMove = true; 4979 startTouch(detector.getFocusX(), detector.getFocusY(), 4980 mLastTouchTime); 4981 4982 mViewManager.endZoom(); 4983 } 4984 4985 public boolean onScale(ScaleGestureDetector detector) { 4986 float scale = (float) (Math.round(detector.getScaleFactor() 4987 * mActualScale * 100) / 100.0); 4988 if (Math.abs(scale - mActualScale) >= MINIMUM_SCALE_INCREMENT) { 4989 mPreviewZoomOnly = true; 4990 // limit the scale change per step 4991 if (scale > mActualScale) { 4992 scale = Math.min(scale, mActualScale * 1.25f); 4993 } else { 4994 scale = Math.max(scale, mActualScale * 0.8f); 4995 } 4996 mZoomCenterX = detector.getFocusX(); 4997 mZoomCenterY = detector.getFocusY(); 4998 setNewZoomScale(scale, false, false); 4999 invalidate(); 5000 return true; 5001 } 5002 return false; 5003 } 5004 } 5005 5006 private boolean hitFocusedPlugin(int contentX, int contentY) { 5007 if (DebugFlags.WEB_VIEW) { 5008 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5009 Rect r = nativeFocusNodeBounds(); 5010 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5011 + ", " + r.right + ", " + r.bottom + ")"); 5012 } 5013 return nativeFocusIsPlugin() 5014 && nativeFocusNodeBounds().contains(contentX, contentY); 5015 } 5016 5017 private boolean shouldForwardTouchEvent() { 5018 return mFullScreenHolder != null || (mForwardTouchEvents 5019 && !mSelectingText 5020 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5021 } 5022 5023 private boolean inFullScreenMode() { 5024 return mFullScreenHolder != null; 5025 } 5026 5027 @Override 5028 public boolean onTouchEvent(MotionEvent ev) { 5029 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 5030 return false; 5031 } 5032 5033 if (DebugFlags.WEB_VIEW) { 5034 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 5035 + mTouchMode); 5036 } 5037 5038 int action; 5039 float x, y; 5040 long eventTime = ev.getEventTime(); 5041 5042 // FIXME: we may consider to give WebKit an option to handle multi-touch 5043 // events later. 5044 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 5045 if (mAllowPanAndScale || mMinZoomScale < mMaxZoomScale) { 5046 mScaleDetector.onTouchEvent(ev); 5047 if (mScaleDetector.isInProgress()) { 5048 mLastTouchTime = eventTime; 5049 if (!mAllowPanAndScale) { 5050 return true; 5051 } 5052 } 5053 x = mScaleDetector.getFocusX(); 5054 y = mScaleDetector.getFocusY(); 5055 action = ev.getAction() & MotionEvent.ACTION_MASK; 5056 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5057 cancelTouch(); 5058 action = MotionEvent.ACTION_DOWN; 5059 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5060 // set mLastTouchX/Y to the remaining point 5061 mLastTouchX = x; 5062 mLastTouchY = y; 5063 } else if (action == MotionEvent.ACTION_MOVE) { 5064 // negative x or y indicate it is on the edge, skip it. 5065 if (x < 0 || y < 0) { 5066 return true; 5067 } 5068 } 5069 } else { 5070 // if the page disallow zoom, skip multi-pointer action 5071 return true; 5072 } 5073 } else { 5074 action = ev.getAction(); 5075 x = ev.getX(); 5076 y = ev.getY(); 5077 } 5078 5079 // Due to the touch screen edge effect, a touch closer to the edge 5080 // always snapped to the edge. As getViewWidth() can be different from 5081 // getWidth() due to the scrollbar, adjusting the point to match 5082 // getViewWidth(). Same applied to the height. 5083 if (x > getViewWidth() - 1) { 5084 x = getViewWidth() - 1; 5085 } 5086 if (y > getViewHeightWithTitle() - 1) { 5087 y = getViewHeightWithTitle() - 1; 5088 } 5089 5090 float fDeltaX = mLastTouchX - x; 5091 float fDeltaY = mLastTouchY - y; 5092 int deltaX = (int) fDeltaX; 5093 int deltaY = (int) fDeltaY; 5094 int contentX = viewToContentX((int) x + mScrollX); 5095 int contentY = viewToContentY((int) y + mScrollY); 5096 5097 switch (action) { 5098 case MotionEvent.ACTION_DOWN: { 5099 mPreventDefault = PREVENT_DEFAULT_NO; 5100 mConfirmMove = false; 5101 if (!mScroller.isFinished()) { 5102 // stop the current scroll animation, but if this is 5103 // the start of a fling, allow it to add to the current 5104 // fling's velocity 5105 mScroller.abortAnimation(); 5106 mTouchMode = TOUCH_DRAG_START_MODE; 5107 mConfirmMove = true; 5108 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5109 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5110 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5111 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5112 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5113 } else { 5114 // commit the short press action for the previous tap 5115 doShortPress(); 5116 mTouchMode = TOUCH_INIT_MODE; 5117 mDeferTouchProcess = (!inFullScreenMode() 5118 && mForwardTouchEvents) ? hitFocusedPlugin( 5119 contentX, contentY) : false; 5120 } 5121 } else { // the normal case 5122 mPreviewZoomOnly = false; 5123 mTouchMode = TOUCH_INIT_MODE; 5124 mDeferTouchProcess = (!inFullScreenMode() 5125 && mForwardTouchEvents) ? hitFocusedPlugin( 5126 contentX, contentY) : false; 5127 mWebViewCore.sendMessage( 5128 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5129 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5130 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5131 (eventTime - mLastTouchUpTime), eventTime); 5132 } 5133 if (mSelectingText) { 5134 mDrawSelectionPointer = false; 5135 mSelectionStarted = nativeStartSelection(contentX, contentY); 5136 if (DebugFlags.WEB_VIEW) { 5137 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5138 } 5139 invalidate(); 5140 } 5141 } 5142 // Trigger the link 5143 if (mTouchMode == TOUCH_INIT_MODE 5144 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5145 mPrivateHandler.sendEmptyMessageDelayed( 5146 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5147 mPrivateHandler.sendEmptyMessageDelayed( 5148 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5149 if (inFullScreenMode() || mDeferTouchProcess) { 5150 mPreventDefault = PREVENT_DEFAULT_YES; 5151 } else if (mForwardTouchEvents) { 5152 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5153 } else { 5154 mPreventDefault = PREVENT_DEFAULT_NO; 5155 } 5156 // pass the touch events from UI thread to WebCore thread 5157 if (shouldForwardTouchEvent()) { 5158 TouchEventData ted = new TouchEventData(); 5159 ted.mAction = action; 5160 ted.mX = contentX; 5161 ted.mY = contentY; 5162 ted.mMetaState = ev.getMetaState(); 5163 ted.mReprocess = mDeferTouchProcess; 5164 if (mDeferTouchProcess) { 5165 // still needs to set them for compute deltaX/Y 5166 mLastTouchX = x; 5167 mLastTouchY = y; 5168 ted.mViewX = x; 5169 ted.mViewY = y; 5170 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5171 break; 5172 } 5173 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5174 if (!inFullScreenMode()) { 5175 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5176 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5177 action, 0), TAP_TIMEOUT); 5178 } 5179 } 5180 } 5181 startTouch(x, y, eventTime); 5182 break; 5183 } 5184 case MotionEvent.ACTION_MOVE: { 5185 boolean firstMove = false; 5186 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5187 >= mTouchSlopSquare) { 5188 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5189 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5190 mConfirmMove = true; 5191 firstMove = true; 5192 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5193 mTouchMode = TOUCH_INIT_MODE; 5194 } 5195 } 5196 // pass the touch events from UI thread to WebCore thread 5197 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5198 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5199 mLastSentTouchTime = eventTime; 5200 TouchEventData ted = new TouchEventData(); 5201 ted.mAction = action; 5202 ted.mX = contentX; 5203 ted.mY = contentY; 5204 ted.mMetaState = ev.getMetaState(); 5205 ted.mReprocess = mDeferTouchProcess; 5206 if (mDeferTouchProcess) { 5207 ted.mViewX = x; 5208 ted.mViewY = y; 5209 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5210 break; 5211 } 5212 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5213 if (firstMove && !inFullScreenMode()) { 5214 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5215 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5216 action, 0), TAP_TIMEOUT); 5217 } 5218 } 5219 if (mTouchMode == TOUCH_DONE_MODE 5220 || mPreventDefault == PREVENT_DEFAULT_YES) { 5221 // no dragging during scroll zoom animation, or when prevent 5222 // default is yes 5223 break; 5224 } 5225 if (mVelocityTracker == null) { 5226 Log.e(LOGTAG, "Got null mVelocityTracker when " 5227 + "mPreventDefault = " + mPreventDefault 5228 + " mDeferTouchProcess = " + mDeferTouchProcess 5229 + " mTouchMode = " + mTouchMode); 5230 } 5231 mVelocityTracker.addMovement(ev); 5232 if (mSelectingText && mSelectionStarted) { 5233 if (DebugFlags.WEB_VIEW) { 5234 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5235 } 5236 nativeExtendSelection(contentX, contentY); 5237 invalidate(); 5238 break; 5239 } 5240 5241 if (mTouchMode != TOUCH_DRAG_MODE) { 5242 5243 if (!mConfirmMove) { 5244 break; 5245 } 5246 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5247 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5248 // track mLastTouchTime as we may need to do fling at 5249 // ACTION_UP 5250 mLastTouchTime = eventTime; 5251 break; 5252 } 5253 5254 // Only lock dragging to one axis if we don't have a scale in progress. 5255 // Scaling implies free-roaming movement. Note we'll only ever get here 5256 // if mAllowPanAndScale is true. 5257 if (mScaleDetector != null && !mScaleDetector.isInProgress()) { 5258 // if it starts nearly horizontal or vertical, enforce it 5259 int ax = Math.abs(deltaX); 5260 int ay = Math.abs(deltaY); 5261 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5262 mSnapScrollMode = SNAP_X; 5263 mSnapPositive = deltaX > 0; 5264 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5265 mSnapScrollMode = SNAP_Y; 5266 mSnapPositive = deltaY > 0; 5267 } 5268 } 5269 5270 mTouchMode = TOUCH_DRAG_MODE; 5271 mLastTouchX = x; 5272 mLastTouchY = y; 5273 fDeltaX = 0.0f; 5274 fDeltaY = 0.0f; 5275 deltaX = 0; 5276 deltaY = 0; 5277 5278 startDrag(); 5279 } 5280 5281 if (mDragTrackerHandler != null) { 5282 mDragTrackerHandler.dragTo(x, y); 5283 } 5284 5285 // do pan 5286 boolean done = false; 5287 boolean keepScrollBarsVisible = false; 5288 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5289 mLastTouchX = x; 5290 mLastTouchY = y; 5291 keepScrollBarsVisible = done = true; 5292 } else { 5293 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5294 int ax = Math.abs(deltaX); 5295 int ay = Math.abs(deltaY); 5296 if (mSnapScrollMode == SNAP_X) { 5297 // radical change means getting out of snap mode 5298 if (ay > MAX_SLOPE_FOR_DIAG * ax 5299 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5300 mSnapScrollMode = SNAP_NONE; 5301 } 5302 // reverse direction means lock in the snap mode 5303 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5304 (mSnapPositive 5305 ? deltaX < -mMinLockSnapReverseDistance 5306 : deltaX > mMinLockSnapReverseDistance)) { 5307 mSnapScrollMode |= SNAP_LOCK; 5308 } 5309 } else { 5310 // radical change means getting out of snap mode 5311 if (ax > MAX_SLOPE_FOR_DIAG * ay 5312 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5313 mSnapScrollMode = SNAP_NONE; 5314 } 5315 // reverse direction means lock in the snap mode 5316 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5317 (mSnapPositive 5318 ? deltaY < -mMinLockSnapReverseDistance 5319 : deltaY > mMinLockSnapReverseDistance)) { 5320 mSnapScrollMode |= SNAP_LOCK; 5321 } 5322 } 5323 } 5324 if (mSnapScrollMode != SNAP_NONE) { 5325 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5326 deltaY = 0; 5327 } else { 5328 deltaX = 0; 5329 } 5330 } 5331 if ((deltaX | deltaY) != 0) { 5332 if (deltaX != 0) { 5333 mLastTouchX = x; 5334 } 5335 if (deltaY != 0) { 5336 mLastTouchY = y; 5337 } 5338 mHeldMotionless = MOTIONLESS_FALSE; 5339 } else { 5340 // keep the scrollbar on the screen even there is no 5341 // scroll 5342 mLastTouchX = x; 5343 mLastTouchY = y; 5344 keepScrollBarsVisible = true; 5345 } 5346 mLastTouchTime = eventTime; 5347 mUserScroll = true; 5348 } 5349 5350 doDrag(deltaX, deltaY); 5351 5352 if (keepScrollBarsVisible) { 5353 if (mHeldMotionless != MOTIONLESS_TRUE) { 5354 mHeldMotionless = MOTIONLESS_TRUE; 5355 invalidate(); 5356 } 5357 // keep the scrollbar on the screen even there is no scroll 5358 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5359 false); 5360 // return false to indicate that we can't pan out of the 5361 // view space 5362 return !done; 5363 } 5364 break; 5365 } 5366 case MotionEvent.ACTION_UP: { 5367 // pass the touch events from UI thread to WebCore thread 5368 if (shouldForwardTouchEvent()) { 5369 TouchEventData ted = new TouchEventData(); 5370 ted.mAction = action; 5371 ted.mX = contentX; 5372 ted.mY = contentY; 5373 ted.mMetaState = ev.getMetaState(); 5374 ted.mReprocess = mDeferTouchProcess; 5375 if (mDeferTouchProcess) { 5376 ted.mViewX = x; 5377 ted.mViewY = y; 5378 } 5379 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5380 } 5381 mLastTouchUpTime = eventTime; 5382 switch (mTouchMode) { 5383 case TOUCH_DOUBLE_TAP_MODE: // double tap 5384 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5385 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5386 if (inFullScreenMode() || mDeferTouchProcess) { 5387 TouchEventData ted = new TouchEventData(); 5388 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5389 ted.mX = contentX; 5390 ted.mY = contentY; 5391 ted.mMetaState = ev.getMetaState(); 5392 ted.mReprocess = mDeferTouchProcess; 5393 if (mDeferTouchProcess) { 5394 ted.mViewX = x; 5395 ted.mViewY = y; 5396 } 5397 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5398 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5399 doDoubleTap(); 5400 mTouchMode = TOUCH_DONE_MODE; 5401 } 5402 break; 5403 case TOUCH_INIT_MODE: // tap 5404 case TOUCH_SHORTPRESS_START_MODE: 5405 case TOUCH_SHORTPRESS_MODE: 5406 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5407 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5408 if (mConfirmMove) { 5409 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5410 " WebCore's response for touch down."); 5411 if (mPreventDefault != PREVENT_DEFAULT_YES 5412 && (computeMaxScrollX() > 0 5413 || computeMaxScrollY() > 0)) { 5414 // UI takes control back, cancel WebCore touch 5415 cancelWebCoreTouchEvent(contentX, contentY, 5416 true); 5417 // we will not rewrite drag code here, but we 5418 // will try fling if it applies. 5419 WebViewCore.reducePriority(); 5420 // to get better performance, pause updating the 5421 // picture 5422 WebViewCore.pauseUpdatePicture(mWebViewCore); 5423 // fall through to TOUCH_DRAG_MODE 5424 } else { 5425 // WebKit may consume the touch event and modify 5426 // DOM. drawContentPicture() will be called with 5427 // animateSroll as true for better performance. 5428 // Force redraw in high-quality. 5429 invalidate(); 5430 break; 5431 } 5432 } else { 5433 if (mSelectingText) { 5434 if (nativeHitSelection(contentX, contentY)) { 5435 copySelection(); 5436 } 5437 selectionDone(); 5438 break; 5439 } 5440 if (mTouchMode == TOUCH_INIT_MODE) { 5441 mPrivateHandler.sendEmptyMessageDelayed( 5442 RELEASE_SINGLE_TAP, ViewConfiguration 5443 .getDoubleTapTimeout()); 5444 } else { 5445 doShortPress(); 5446 } 5447 break; 5448 } 5449 case TOUCH_DRAG_MODE: 5450 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5451 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5452 // if the user waits a while w/o moving before the 5453 // up, we don't want to do a fling 5454 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5455 if (mVelocityTracker == null) { 5456 Log.e(LOGTAG, "Got null mVelocityTracker when " 5457 + "mPreventDefault = " 5458 + mPreventDefault 5459 + " mDeferTouchProcess = " 5460 + mDeferTouchProcess); 5461 } 5462 mVelocityTracker.addMovement(ev); 5463 // set to MOTIONLESS_IGNORE so that it won't keep 5464 // removing and sending message in 5465 // drawCoreAndCursorRing() 5466 mHeldMotionless = MOTIONLESS_IGNORE; 5467 doFling(); 5468 break; 5469 } else { 5470 if (mScroller.springback(mScrollX, mScrollY, 0, 5471 computeMaxScrollX(), 0, 5472 computeMaxScrollY())) { 5473 invalidate(); 5474 } 5475 } 5476 // redraw in high-quality, as we're done dragging 5477 mHeldMotionless = MOTIONLESS_TRUE; 5478 invalidate(); 5479 // fall through 5480 case TOUCH_DRAG_START_MODE: 5481 // TOUCH_DRAG_START_MODE should not happen for the real 5482 // device as we almost certain will get a MOVE. But this 5483 // is possible on emulator. 5484 mLastVelocity = 0; 5485 WebViewCore.resumePriority(); 5486 WebViewCore.resumeUpdatePicture(mWebViewCore); 5487 break; 5488 } 5489 stopTouch(); 5490 break; 5491 } 5492 case MotionEvent.ACTION_CANCEL: { 5493 if (mTouchMode == TOUCH_DRAG_MODE) { 5494 mScroller.springback(mScrollX, mScrollY, 0, 5495 computeMaxScrollX(), 0, computeMaxScrollY()); 5496 invalidate(); 5497 } 5498 cancelWebCoreTouchEvent(contentX, contentY, false); 5499 cancelTouch(); 5500 break; 5501 } 5502 } 5503 return true; 5504 } 5505 5506 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5507 if (shouldForwardTouchEvent()) { 5508 if (removeEvents) { 5509 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5510 } 5511 TouchEventData ted = new TouchEventData(); 5512 ted.mX = x; 5513 ted.mY = y; 5514 ted.mAction = MotionEvent.ACTION_CANCEL; 5515 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5516 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5517 } 5518 } 5519 5520 private void startTouch(float x, float y, long eventTime) { 5521 // Remember where the motion event started 5522 mLastTouchX = x; 5523 mLastTouchY = y; 5524 mLastTouchTime = eventTime; 5525 mVelocityTracker = VelocityTracker.obtain(); 5526 mSnapScrollMode = SNAP_NONE; 5527 if (mDragTracker != null) { 5528 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5529 } 5530 } 5531 5532 private void startDrag() { 5533 WebViewCore.reducePriority(); 5534 // to get better performance, pause updating the picture 5535 WebViewCore.pauseUpdatePicture(mWebViewCore); 5536 if (!mDragFromTextInput) { 5537 nativeHideCursor(); 5538 } 5539 WebSettings settings = getSettings(); 5540 if (settings.supportZoom() 5541 && settings.getBuiltInZoomControls() 5542 && !getZoomButtonsController().isVisible() 5543 && mMinZoomScale < mMaxZoomScale 5544 && (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5545 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF)) { 5546 mZoomButtonsController.setVisible(true); 5547 int count = settings.getDoubleTapToastCount(); 5548 if (mInZoomOverview && count > 0) { 5549 settings.setDoubleTapToastCount(--count); 5550 Toast.makeText(mContext, 5551 com.android.internal.R.string.double_tap_toast, 5552 Toast.LENGTH_LONG).show(); 5553 } 5554 } 5555 } 5556 5557 private void doDrag(int deltaX, int deltaY) { 5558 if ((deltaX | deltaY) != 0) { 5559 final int oldX = mScrollX; 5560 final int oldY = mScrollY; 5561 final int rangeX = computeMaxScrollX(); 5562 final int rangeY = computeMaxScrollY(); 5563 overscrollBy(deltaX, deltaY, oldX, oldY, 5564 rangeX, rangeY, 5565 mOverscrollDistance, mOverscrollDistance, true); 5566 5567 if (mEdgeGlowTop != null) { 5568 // Don't show left/right glows if we fit the whole content. 5569 if (rangeX > 0) { 5570 final int pulledToX = oldX + deltaX; 5571 if (pulledToX < 0) { 5572 mEdgeGlowLeft.onPull((float) deltaX / getWidth()); 5573 if (!mEdgeGlowRight.isFinished()) { 5574 mEdgeGlowRight.onRelease(); 5575 } 5576 } else if (pulledToX > rangeX) { 5577 mEdgeGlowRight.onPull((float) deltaX / getWidth()); 5578 if (!mEdgeGlowLeft.isFinished()) { 5579 mEdgeGlowLeft.onRelease(); 5580 } 5581 } 5582 } 5583 5584 if (rangeY > 0 || getOverscrollMode() == OVERSCROLL_ALWAYS) { 5585 final int pulledToY = oldY + deltaY; 5586 if (pulledToY < 0) { 5587 mEdgeGlowTop.onPull((float) deltaY / getHeight()); 5588 if (!mEdgeGlowBottom.isFinished()) { 5589 mEdgeGlowBottom.onRelease(); 5590 } 5591 } else if (pulledToY > rangeY) { 5592 mEdgeGlowBottom.onPull((float) deltaY / getHeight()); 5593 if (!mEdgeGlowTop.isFinished()) { 5594 mEdgeGlowTop.onRelease(); 5595 } 5596 } 5597 } 5598 } 5599 } 5600 if (!getSettings().getBuiltInZoomControls()) { 5601 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 5602 if (mZoomControls != null && showPlusMinus) { 5603 if (mZoomControls.getVisibility() == View.VISIBLE) { 5604 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5605 } else { 5606 mZoomControls.show(showPlusMinus, false); 5607 } 5608 mPrivateHandler.postDelayed(mZoomControlRunnable, 5609 ZOOM_CONTROLS_TIMEOUT); 5610 } 5611 } 5612 } 5613 5614 private void stopTouch() { 5615 if (mDragTrackerHandler != null) { 5616 mDragTrackerHandler.stopDrag(); 5617 } 5618 // we also use mVelocityTracker == null to tell us that we are 5619 // not "moving around", so we can take the slower/prettier 5620 // mode in the drawing code 5621 if (mVelocityTracker != null) { 5622 mVelocityTracker.recycle(); 5623 mVelocityTracker = null; 5624 } 5625 5626 // Release any pulled glows 5627 if (mEdgeGlowTop != null) { 5628 mEdgeGlowTop.onRelease(); 5629 mEdgeGlowBottom.onRelease(); 5630 mEdgeGlowLeft.onRelease(); 5631 mEdgeGlowRight.onRelease(); 5632 } 5633 } 5634 5635 private void cancelTouch() { 5636 if (mDragTrackerHandler != null) { 5637 mDragTrackerHandler.stopDrag(); 5638 } 5639 // we also use mVelocityTracker == null to tell us that we are 5640 // not "moving around", so we can take the slower/prettier 5641 // mode in the drawing code 5642 if (mVelocityTracker != null) { 5643 mVelocityTracker.recycle(); 5644 mVelocityTracker = null; 5645 } 5646 5647 // Release any pulled glows 5648 if (mEdgeGlowTop != null) { 5649 mEdgeGlowTop.onRelease(); 5650 mEdgeGlowBottom.onRelease(); 5651 mEdgeGlowLeft.onRelease(); 5652 mEdgeGlowRight.onRelease(); 5653 } 5654 5655 if (mTouchMode == TOUCH_DRAG_MODE) { 5656 WebViewCore.resumePriority(); 5657 WebViewCore.resumeUpdatePicture(mWebViewCore); 5658 } 5659 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5660 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5661 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5662 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5663 mHeldMotionless = MOTIONLESS_TRUE; 5664 mTouchMode = TOUCH_DONE_MODE; 5665 nativeHideCursor(); 5666 } 5667 5668 private long mTrackballFirstTime = 0; 5669 private long mTrackballLastTime = 0; 5670 private float mTrackballRemainsX = 0.0f; 5671 private float mTrackballRemainsY = 0.0f; 5672 private int mTrackballXMove = 0; 5673 private int mTrackballYMove = 0; 5674 private boolean mSelectingText = false; 5675 private boolean mSelectionStarted = false; 5676 private boolean mExtendSelection = false; 5677 private boolean mDrawSelectionPointer = false; 5678 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5679 private static final int TRACKBALL_TIMEOUT = 200; 5680 private static final int TRACKBALL_WAIT = 100; 5681 private static final int TRACKBALL_SCALE = 400; 5682 private static final int TRACKBALL_SCROLL_COUNT = 5; 5683 private static final int TRACKBALL_MOVE_COUNT = 10; 5684 private static final int TRACKBALL_MULTIPLIER = 3; 5685 private static final int SELECT_CURSOR_OFFSET = 16; 5686 private int mSelectX = 0; 5687 private int mSelectY = 0; 5688 private boolean mFocusSizeChanged = false; 5689 private boolean mShiftIsPressed = false; 5690 private boolean mTrackballDown = false; 5691 private long mTrackballUpTime = 0; 5692 private long mLastCursorTime = 0; 5693 private Rect mLastCursorBounds; 5694 5695 // Set by default; BrowserActivity clears to interpret trackball data 5696 // directly for movement. Currently, the framework only passes 5697 // arrow key events, not trackball events, from one child to the next 5698 private boolean mMapTrackballToArrowKeys = true; 5699 5700 public void setMapTrackballToArrowKeys(boolean setMap) { 5701 mMapTrackballToArrowKeys = setMap; 5702 } 5703 5704 void resetTrackballTime() { 5705 mTrackballLastTime = 0; 5706 } 5707 5708 @Override 5709 public boolean onTrackballEvent(MotionEvent ev) { 5710 long time = ev.getEventTime(); 5711 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5712 if (ev.getY() > 0) pageDown(true); 5713 if (ev.getY() < 0) pageUp(true); 5714 return true; 5715 } 5716 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5717 if (mSelectingText) { 5718 return true; // discard press if copy in progress 5719 } 5720 mTrackballDown = true; 5721 if (mNativeClass == 0) { 5722 return false; 5723 } 5724 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5725 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5726 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5727 nativeSelectBestAt(mLastCursorBounds); 5728 } 5729 if (DebugFlags.WEB_VIEW) { 5730 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5731 + " time=" + time 5732 + " mLastCursorTime=" + mLastCursorTime); 5733 } 5734 if (isInTouchMode()) requestFocusFromTouch(); 5735 return false; // let common code in onKeyDown at it 5736 } 5737 if (ev.getAction() == MotionEvent.ACTION_UP) { 5738 // LONG_PRESS_CENTER is set in common onKeyDown 5739 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5740 mTrackballDown = false; 5741 mTrackballUpTime = time; 5742 if (mSelectingText) { 5743 if (mExtendSelection) { 5744 copySelection(); 5745 selectionDone(); 5746 } else { 5747 mExtendSelection = true; 5748 nativeSetExtendSelection(); 5749 invalidate(); // draw the i-beam instead of the arrow 5750 } 5751 return true; // discard press if copy in progress 5752 } 5753 if (DebugFlags.WEB_VIEW) { 5754 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5755 + " time=" + time 5756 ); 5757 } 5758 return false; // let common code in onKeyUp at it 5759 } 5760 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5761 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5762 return false; 5763 } 5764 if (mTrackballDown) { 5765 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5766 return true; // discard move if trackball is down 5767 } 5768 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5769 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5770 return true; 5771 } 5772 // TODO: alternatively we can do panning as touch does 5773 switchOutDrawHistory(); 5774 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5775 if (DebugFlags.WEB_VIEW) { 5776 Log.v(LOGTAG, "onTrackballEvent time=" 5777 + time + " last=" + mTrackballLastTime); 5778 } 5779 mTrackballFirstTime = time; 5780 mTrackballXMove = mTrackballYMove = 0; 5781 } 5782 mTrackballLastTime = time; 5783 if (DebugFlags.WEB_VIEW) { 5784 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5785 } 5786 mTrackballRemainsX += ev.getX(); 5787 mTrackballRemainsY += ev.getY(); 5788 doTrackball(time); 5789 return true; 5790 } 5791 5792 void moveSelection(float xRate, float yRate) { 5793 if (mNativeClass == 0) 5794 return; 5795 int width = getViewWidth(); 5796 int height = getViewHeight(); 5797 mSelectX += xRate; 5798 mSelectY += yRate; 5799 int maxX = width + mScrollX; 5800 int maxY = height + mScrollY; 5801 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5802 , mSelectX)); 5803 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5804 , mSelectY)); 5805 if (DebugFlags.WEB_VIEW) { 5806 Log.v(LOGTAG, "moveSelection" 5807 + " mSelectX=" + mSelectX 5808 + " mSelectY=" + mSelectY 5809 + " mScrollX=" + mScrollX 5810 + " mScrollY=" + mScrollY 5811 + " xRate=" + xRate 5812 + " yRate=" + yRate 5813 ); 5814 } 5815 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5816 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5817 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5818 : 0; 5819 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5820 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5821 : 0; 5822 pinScrollBy(scrollX, scrollY, true, 0); 5823 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5824 requestRectangleOnScreen(select); 5825 invalidate(); 5826 } 5827 5828 private int scaleTrackballX(float xRate, int width) { 5829 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5830 int nextXMove = xMove; 5831 if (xMove > 0) { 5832 if (xMove > mTrackballXMove) { 5833 xMove -= mTrackballXMove; 5834 } 5835 } else if (xMove < mTrackballXMove) { 5836 xMove -= mTrackballXMove; 5837 } 5838 mTrackballXMove = nextXMove; 5839 return xMove; 5840 } 5841 5842 private int scaleTrackballY(float yRate, int height) { 5843 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5844 int nextYMove = yMove; 5845 if (yMove > 0) { 5846 if (yMove > mTrackballYMove) { 5847 yMove -= mTrackballYMove; 5848 } 5849 } else if (yMove < mTrackballYMove) { 5850 yMove -= mTrackballYMove; 5851 } 5852 mTrackballYMove = nextYMove; 5853 return yMove; 5854 } 5855 5856 private int keyCodeToSoundsEffect(int keyCode) { 5857 switch(keyCode) { 5858 case KeyEvent.KEYCODE_DPAD_UP: 5859 return SoundEffectConstants.NAVIGATION_UP; 5860 case KeyEvent.KEYCODE_DPAD_RIGHT: 5861 return SoundEffectConstants.NAVIGATION_RIGHT; 5862 case KeyEvent.KEYCODE_DPAD_DOWN: 5863 return SoundEffectConstants.NAVIGATION_DOWN; 5864 case KeyEvent.KEYCODE_DPAD_LEFT: 5865 return SoundEffectConstants.NAVIGATION_LEFT; 5866 } 5867 throw new IllegalArgumentException("keyCode must be one of " + 5868 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5869 "KEYCODE_DPAD_LEFT}."); 5870 } 5871 5872 private void doTrackball(long time) { 5873 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5874 if (elapsed == 0) { 5875 elapsed = TRACKBALL_TIMEOUT; 5876 } 5877 float xRate = mTrackballRemainsX * 1000 / elapsed; 5878 float yRate = mTrackballRemainsY * 1000 / elapsed; 5879 int viewWidth = getViewWidth(); 5880 int viewHeight = getViewHeight(); 5881 if (mSelectingText) { 5882 if (!mDrawSelectionPointer) { 5883 // The last selection was made by touch, disabling drawing the 5884 // selection pointer. Allow the trackball to adjust the 5885 // position of the touch control. 5886 mSelectX = contentToViewX(nativeSelectionX()); 5887 mSelectY = contentToViewY(nativeSelectionY()); 5888 mDrawSelectionPointer = mExtendSelection = true; 5889 nativeSetExtendSelection(); 5890 } 5891 moveSelection(scaleTrackballX(xRate, viewWidth), 5892 scaleTrackballY(yRate, viewHeight)); 5893 mTrackballRemainsX = mTrackballRemainsY = 0; 5894 return; 5895 } 5896 float ax = Math.abs(xRate); 5897 float ay = Math.abs(yRate); 5898 float maxA = Math.max(ax, ay); 5899 if (DebugFlags.WEB_VIEW) { 5900 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5901 + " xRate=" + xRate 5902 + " yRate=" + yRate 5903 + " mTrackballRemainsX=" + mTrackballRemainsX 5904 + " mTrackballRemainsY=" + mTrackballRemainsY); 5905 } 5906 int width = mContentWidth - viewWidth; 5907 int height = mContentHeight - viewHeight; 5908 if (width < 0) width = 0; 5909 if (height < 0) height = 0; 5910 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5911 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5912 maxA = Math.max(ax, ay); 5913 int count = Math.max(0, (int) maxA); 5914 int oldScrollX = mScrollX; 5915 int oldScrollY = mScrollY; 5916 if (count > 0) { 5917 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5918 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5919 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5920 KeyEvent.KEYCODE_DPAD_RIGHT; 5921 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5922 if (DebugFlags.WEB_VIEW) { 5923 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5924 + " count=" + count 5925 + " mTrackballRemainsX=" + mTrackballRemainsX 5926 + " mTrackballRemainsY=" + mTrackballRemainsY); 5927 } 5928 if (mNativeClass != 0 && nativeFocusIsPlugin()) { 5929 for (int i = 0; i < count; i++) { 5930 letPluginHandleNavKey(selectKeyCode, time, true); 5931 } 5932 letPluginHandleNavKey(selectKeyCode, time, false); 5933 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5934 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5935 } 5936 mTrackballRemainsX = mTrackballRemainsY = 0; 5937 } 5938 if (count >= TRACKBALL_SCROLL_COUNT) { 5939 int xMove = scaleTrackballX(xRate, width); 5940 int yMove = scaleTrackballY(yRate, height); 5941 if (DebugFlags.WEB_VIEW) { 5942 Log.v(LOGTAG, "doTrackball pinScrollBy" 5943 + " count=" + count 5944 + " xMove=" + xMove + " yMove=" + yMove 5945 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5946 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5947 ); 5948 } 5949 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5950 xMove = 0; 5951 } 5952 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5953 yMove = 0; 5954 } 5955 if (xMove != 0 || yMove != 0) { 5956 pinScrollBy(xMove, yMove, true, 0); 5957 } 5958 mUserScroll = true; 5959 } 5960 } 5961 5962 private int computeMaxScrollX() { 5963 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 5964 } 5965 5966 private int computeMaxScrollY() { 5967 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 5968 - getViewHeightWithTitle(), 0); 5969 } 5970 5971 public void flingScroll(int vx, int vy) { 5972 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5973 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 5974 invalidate(); 5975 } 5976 5977 private void doFling() { 5978 if (mVelocityTracker == null) { 5979 return; 5980 } 5981 int maxX = computeMaxScrollX(); 5982 int maxY = computeMaxScrollY(); 5983 5984 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5985 int vx = (int) mVelocityTracker.getXVelocity(); 5986 int vy = (int) mVelocityTracker.getYVelocity(); 5987 5988 if (mSnapScrollMode != SNAP_NONE) { 5989 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5990 vy = 0; 5991 } else { 5992 vx = 0; 5993 } 5994 } 5995 if (true /* EMG release: make our fling more like Maps' */) { 5996 // maps cuts their velocity in half 5997 vx = vx * 3 / 4; 5998 vy = vy * 3 / 4; 5999 } 6000 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6001 WebViewCore.resumePriority(); 6002 WebViewCore.resumeUpdatePicture(mWebViewCore); 6003 if (mScroller.springback(mScrollX, mScrollY, 0, computeMaxScrollX(), 6004 0, computeMaxScrollY())) { 6005 invalidate(); 6006 } 6007 return; 6008 } 6009 float currentVelocity = mScroller.getCurrVelocity(); 6010 if (mLastVelocity > 0 && currentVelocity > 0) { 6011 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6012 - Math.atan2(vy, vx))); 6013 final float circle = (float) (Math.PI) * 2.0f; 6014 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6015 vx += currentVelocity * mLastVelX / mLastVelocity; 6016 vy += currentVelocity * mLastVelY / mLastVelocity; 6017 if (DebugFlags.WEB_VIEW) { 6018 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6019 } 6020 } else if (DebugFlags.WEB_VIEW) { 6021 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6022 } 6023 } else if (DebugFlags.WEB_VIEW) { 6024 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6025 + " current=" + currentVelocity 6026 + " vx=" + vx + " vy=" + vy 6027 + " maxX=" + maxX + " maxY=" + maxY 6028 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 6029 } 6030 6031 // Allow sloppy flings without overscrolling at the edges. 6032 if ((mScrollX == 0 || mScrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6033 vx = 0; 6034 } 6035 if ((mScrollY == 0 || mScrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6036 vy = 0; 6037 } 6038 6039 if (mOverscrollDistance < mOverflingDistance) { 6040 if (mScrollX == -mOverscrollDistance || mScrollX == maxX + mOverscrollDistance) { 6041 vx = 0; 6042 } 6043 if (mScrollY == -mOverscrollDistance || mScrollY == maxY + mOverscrollDistance) { 6044 vy = 0; 6045 } 6046 } 6047 6048 mLastVelX = vx; 6049 mLastVelY = vy; 6050 mLastVelocity = (float) Math.hypot(vx, vy); 6051 6052 // no horizontal overscroll if the content just fits 6053 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY, 6054 maxX == 0 ? 0 : mOverflingDistance, mOverflingDistance); 6055 // Duration is calculated based on velocity. With range boundaries and overscroll 6056 // we may not know how long the final animation will take. (Hence the deprecation 6057 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6058 // resumes during this effect we will take a performance hit. See computeScroll; 6059 // we resume webcore there when the animation is finished. 6060 final int time = mScroller.getDuration(); 6061 awakenScrollBars(time); 6062 invalidate(); 6063 } 6064 6065 private boolean zoomWithPreview(float scale, boolean updateTextWrapScale) { 6066 float oldScale = mActualScale; 6067 mInitialScrollX = mScrollX; 6068 mInitialScrollY = mScrollY; 6069 6070 // snap to DEFAULT_SCALE if it is close 6071 if (Math.abs(scale - mDefaultScale) < MINIMUM_SCALE_INCREMENT) { 6072 scale = mDefaultScale; 6073 } 6074 6075 setNewZoomScale(scale, updateTextWrapScale, false); 6076 6077 if (oldScale != mActualScale) { 6078 // use mZoomPickerScale to see zoom preview first 6079 mZoomStart = SystemClock.uptimeMillis(); 6080 mInvInitialZoomScale = 1.0f / oldScale; 6081 mInvFinalZoomScale = 1.0f / mActualScale; 6082 mZoomScale = mActualScale; 6083 WebViewCore.pauseUpdatePicture(mWebViewCore); 6084 invalidate(); 6085 return true; 6086 } else { 6087 return false; 6088 } 6089 } 6090 6091 /** 6092 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6093 * in charge of installing this view to the view hierarchy. This view will 6094 * become visible when the user starts scrolling via touch and fade away if 6095 * the user does not interact with it. 6096 * <p/> 6097 * API version 3 introduces a built-in zoom mechanism that is shown 6098 * automatically by the MapView. This is the preferred approach for 6099 * showing the zoom UI. 6100 * 6101 * @deprecated The built-in zoom mechanism is preferred, see 6102 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6103 */ 6104 @Deprecated 6105 public View getZoomControls() { 6106 if (!getSettings().supportZoom()) { 6107 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6108 return null; 6109 } 6110 if (mZoomControls == null) { 6111 mZoomControls = createZoomControls(); 6112 6113 /* 6114 * need to be set to VISIBLE first so that getMeasuredHeight() in 6115 * {@link #onSizeChanged()} can return the measured value for proper 6116 * layout. 6117 */ 6118 mZoomControls.setVisibility(View.VISIBLE); 6119 mZoomControlRunnable = new Runnable() { 6120 public void run() { 6121 6122 /* Don't dismiss the controls if the user has 6123 * focus on them. Wait and check again later. 6124 */ 6125 if (!mZoomControls.hasFocus()) { 6126 mZoomControls.hide(); 6127 } else { 6128 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6129 mPrivateHandler.postDelayed(mZoomControlRunnable, 6130 ZOOM_CONTROLS_TIMEOUT); 6131 } 6132 } 6133 }; 6134 } 6135 return mZoomControls; 6136 } 6137 6138 private ExtendedZoomControls createZoomControls() { 6139 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 6140 , null); 6141 zoomControls.setOnZoomInClickListener(new OnClickListener() { 6142 public void onClick(View v) { 6143 // reset time out 6144 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6145 mPrivateHandler.postDelayed(mZoomControlRunnable, 6146 ZOOM_CONTROLS_TIMEOUT); 6147 zoomIn(); 6148 } 6149 }); 6150 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 6151 public void onClick(View v) { 6152 // reset time out 6153 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6154 mPrivateHandler.postDelayed(mZoomControlRunnable, 6155 ZOOM_CONTROLS_TIMEOUT); 6156 zoomOut(); 6157 } 6158 }); 6159 return zoomControls; 6160 } 6161 6162 /** 6163 * Gets the {@link ZoomButtonsController} which can be used to add 6164 * additional buttons to the zoom controls window. 6165 * 6166 * @return The instance of {@link ZoomButtonsController} used by this class, 6167 * or null if it is unavailable. 6168 * @hide 6169 */ 6170 public ZoomButtonsController getZoomButtonsController() { 6171 if (mZoomButtonsController == null) { 6172 mZoomButtonsController = new ZoomButtonsController(this); 6173 mZoomButtonsController.setOnZoomListener(mZoomListener); 6174 // ZoomButtonsController positions the buttons at the bottom, but in 6175 // the middle. Change their layout parameters so they appear on the 6176 // right. 6177 View controls = mZoomButtonsController.getZoomControls(); 6178 ViewGroup.LayoutParams params = controls.getLayoutParams(); 6179 if (params instanceof FrameLayout.LayoutParams) { 6180 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) params; 6181 frameParams.gravity = Gravity.RIGHT; 6182 } 6183 } 6184 return mZoomButtonsController; 6185 } 6186 6187 /** 6188 * Perform zoom in in the webview 6189 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6190 */ 6191 public boolean zoomIn() { 6192 // TODO: alternatively we can disallow this during draw history mode 6193 switchOutDrawHistory(); 6194 mInZoomOverview = false; 6195 // Center zooming to the center of the screen. 6196 mZoomCenterX = getViewWidth() * .5f; 6197 mZoomCenterY = getViewHeight() * .5f; 6198 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 6199 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 6200 return zoomWithPreview(mActualScale * 1.25f, true); 6201 } 6202 6203 /** 6204 * Perform zoom out in the webview 6205 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6206 */ 6207 public boolean zoomOut() { 6208 // TODO: alternatively we can disallow this during draw history mode 6209 switchOutDrawHistory(); 6210 // Center zooming to the center of the screen. 6211 mZoomCenterX = getViewWidth() * .5f; 6212 mZoomCenterY = getViewHeight() * .5f; 6213 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 6214 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 6215 return zoomWithPreview(mActualScale * 0.8f, true); 6216 } 6217 6218 private void updateSelection() { 6219 if (mNativeClass == 0) { 6220 return; 6221 } 6222 // mLastTouchX and mLastTouchY are the point in the current viewport 6223 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6224 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6225 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6226 contentX + mNavSlop, contentY + mNavSlop); 6227 nativeSelectBestAt(rect); 6228 } 6229 6230 /** 6231 * Scroll the focused text field/area to match the WebTextView 6232 * @param xPercent New x position of the WebTextView from 0 to 1. 6233 * @param y New y position of the WebTextView in view coordinates 6234 */ 6235 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 6236 if (!inEditingMode() || mWebViewCore == null) { 6237 return; 6238 } 6239 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 6240 // Since this position is relative to the top of the text input 6241 // field, we do not need to take the title bar's height into 6242 // consideration. 6243 viewToContentDimension(y), 6244 new Float(xPercent)); 6245 } 6246 6247 /** 6248 * Set our starting point and time for a drag from the WebTextView. 6249 */ 6250 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6251 if (!inEditingMode()) { 6252 return; 6253 } 6254 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 6255 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 6256 mLastTouchTime = eventTime; 6257 if (!mScroller.isFinished()) { 6258 abortAnimation(); 6259 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6260 } 6261 mSnapScrollMode = SNAP_NONE; 6262 mVelocityTracker = VelocityTracker.obtain(); 6263 mTouchMode = TOUCH_DRAG_START_MODE; 6264 } 6265 6266 /** 6267 * Given a motion event from the WebTextView, set its location to our 6268 * coordinates, and handle the event. 6269 */ 6270 /*package*/ boolean textFieldDrag(MotionEvent event) { 6271 if (!inEditingMode()) { 6272 return false; 6273 } 6274 mDragFromTextInput = true; 6275 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6276 (float) (mWebTextView.getTop() - mScrollY)); 6277 boolean result = onTouchEvent(event); 6278 mDragFromTextInput = false; 6279 return result; 6280 } 6281 6282 /** 6283 * Due a touch up from a WebTextView. This will be handled by webkit to 6284 * change the selection. 6285 * @param event MotionEvent in the WebTextView's coordinates. 6286 */ 6287 /*package*/ void touchUpOnTextField(MotionEvent event) { 6288 if (!inEditingMode()) { 6289 return; 6290 } 6291 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6292 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6293 nativeMotionUp(x, y, mNavSlop); 6294 } 6295 6296 /** 6297 * Called when pressing the center key or trackball on a textfield. 6298 */ 6299 /*package*/ void centerKeyPressOnTextField() { 6300 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6301 nativeCursorNodePointer()); 6302 } 6303 6304 private void doShortPress() { 6305 if (mNativeClass == 0) { 6306 return; 6307 } 6308 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6309 return; 6310 } 6311 mTouchMode = TOUCH_DONE_MODE; 6312 switchOutDrawHistory(); 6313 // mLastTouchX and mLastTouchY are the point in the current viewport 6314 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6315 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6316 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6317 WebViewCore.MotionUpData motionUpData = new WebViewCore 6318 .MotionUpData(); 6319 motionUpData.mFrame = nativeCacheHitFramePointer(); 6320 motionUpData.mNode = nativeCacheHitNodePointer(); 6321 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6322 motionUpData.mX = contentX; 6323 motionUpData.mY = contentY; 6324 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6325 motionUpData); 6326 } else { 6327 doMotionUp(contentX, contentY); 6328 } 6329 } 6330 6331 private void doMotionUp(int contentX, int contentY) { 6332 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 6333 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6334 } 6335 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6336 playSoundEffect(SoundEffectConstants.CLICK); 6337 } 6338 } 6339 6340 /* 6341 * Return true if the view (Plugin) is fully visible and maximized inside 6342 * the WebView. 6343 */ 6344 private boolean isPluginFitOnScreen(ViewManager.ChildView view) { 6345 int viewWidth = getViewWidth(); 6346 int viewHeight = getViewHeightWithTitle(); 6347 float scale = Math.min((float) viewWidth / view.width, 6348 (float) viewHeight / view.height); 6349 if (scale < mMinZoomScale) { 6350 scale = mMinZoomScale; 6351 } else if (scale > mMaxZoomScale) { 6352 scale = mMaxZoomScale; 6353 } 6354 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 6355 if (contentToViewX(view.x) >= mScrollX 6356 && contentToViewX(view.x + view.width) <= mScrollX 6357 + viewWidth 6358 && contentToViewY(view.y) >= mScrollY 6359 && contentToViewY(view.y + view.height) <= mScrollY 6360 + viewHeight) { 6361 return true; 6362 } 6363 } 6364 return false; 6365 } 6366 6367 /* 6368 * Maximize and center the rectangle, specified in the document coordinate 6369 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6370 * animated scroll to center it. If the zoom needs to be changed, find the 6371 * zoom center and do a smooth zoom transition. 6372 */ 6373 private void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 6374 int viewWidth = getViewWidth(); 6375 int viewHeight = getViewHeightWithTitle(); 6376 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 6377 / docHeight); 6378 if (scale < mMinZoomScale) { 6379 scale = mMinZoomScale; 6380 } else if (scale > mMaxZoomScale) { 6381 scale = mMaxZoomScale; 6382 } 6383 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 6384 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 6385 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 6386 true, 0); 6387 } else { 6388 float oldScreenX = docX * mActualScale - mScrollX; 6389 float rectViewX = docX * scale; 6390 float rectViewWidth = docWidth * scale; 6391 float newMaxWidth = mContentWidth * scale; 6392 float newScreenX = (viewWidth - rectViewWidth) / 2; 6393 // pin the newX to the WebView 6394 if (newScreenX > rectViewX) { 6395 newScreenX = rectViewX; 6396 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6397 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6398 } 6399 mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale) 6400 / (scale - mActualScale); 6401 float oldScreenY = docY * mActualScale + getTitleHeight() 6402 - mScrollY; 6403 float rectViewY = docY * scale + getTitleHeight(); 6404 float rectViewHeight = docHeight * scale; 6405 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6406 float newScreenY = (viewHeight - rectViewHeight) / 2; 6407 // pin the newY to the WebView 6408 if (newScreenY > rectViewY) { 6409 newScreenY = rectViewY; 6410 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6411 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6412 } 6413 mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale) 6414 / (scale - mActualScale); 6415 zoomWithPreview(scale, false); 6416 } 6417 } 6418 6419 void dismissZoomControl() { 6420 if (mWebViewCore == null) { 6421 // maybe called after WebView's destroy(). As we can't get settings, 6422 // just hide zoom control for both styles. 6423 if (mZoomButtonsController != null) { 6424 mZoomButtonsController.setVisible(false); 6425 } 6426 if (mZoomControls != null) { 6427 mZoomControls.hide(); 6428 } 6429 return; 6430 } 6431 WebSettings settings = getSettings(); 6432 if (settings.getBuiltInZoomControls()) { 6433 if (mZoomButtonsController != null) { 6434 mZoomButtonsController.setVisible(false); 6435 } 6436 } else { 6437 if (mZoomControlRunnable != null) { 6438 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 6439 } 6440 if (mZoomControls != null) { 6441 mZoomControls.hide(); 6442 } 6443 } 6444 } 6445 6446 // Rule for double tap: 6447 // 1. if the current scale is not same as the text wrap scale and layout 6448 // algorithm is NARROW_COLUMNS, fit to column; 6449 // 2. if the current state is not overview mode, change to overview mode; 6450 // 3. if the current state is overview mode, change to default scale. 6451 private void doDoubleTap() { 6452 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 6453 return; 6454 } 6455 mZoomCenterX = mLastTouchX; 6456 mZoomCenterY = mLastTouchY; 6457 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 6458 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 6459 WebSettings settings = getSettings(); 6460 settings.setDoubleTapToastCount(0); 6461 // remove the zoom control after double tap 6462 dismissZoomControl(); 6463 ViewManager.ChildView plugin = mViewManager.hitTest(mAnchorX, mAnchorY); 6464 if (plugin != null) { 6465 if (isPluginFitOnScreen(plugin)) { 6466 mInZoomOverview = true; 6467 // Force the titlebar fully reveal in overview mode 6468 if (mScrollY < getTitleHeight()) mScrollY = 0; 6469 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth, 6470 true); 6471 } else { 6472 mInZoomOverview = false; 6473 centerFitRect(plugin.x, plugin.y, plugin.width, plugin.height); 6474 } 6475 return; 6476 } 6477 boolean zoomToDefault = false; 6478 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 6479 && (Math.abs(mActualScale - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT)) { 6480 setNewZoomScale(mActualScale, true, true); 6481 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 6482 if (Math.abs(mActualScale - overviewScale) < MINIMUM_SCALE_INCREMENT) { 6483 mInZoomOverview = true; 6484 } 6485 } else if (!mInZoomOverview) { 6486 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 6487 if (Math.abs(mActualScale - newScale) >= MINIMUM_SCALE_INCREMENT) { 6488 mInZoomOverview = true; 6489 // Force the titlebar fully reveal in overview mode 6490 if (mScrollY < getTitleHeight()) mScrollY = 0; 6491 zoomWithPreview(newScale, true); 6492 } else if (Math.abs(mActualScale - mDefaultScale) >= MINIMUM_SCALE_INCREMENT) { 6493 zoomToDefault = true; 6494 } 6495 } else { 6496 zoomToDefault = true; 6497 } 6498 if (zoomToDefault) { 6499 mInZoomOverview = false; 6500 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 6501 if (left != NO_LEFTEDGE) { 6502 // add a 5pt padding to the left edge. 6503 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 6504 - mScrollX; 6505 // Re-calculate the zoom center so that the new scroll x will be 6506 // on the left edge. 6507 if (viewLeft > 0) { 6508 mZoomCenterX = viewLeft * mDefaultScale 6509 / (mDefaultScale - mActualScale); 6510 } else { 6511 scrollBy(viewLeft, 0); 6512 mZoomCenterX = 0; 6513 } 6514 } 6515 zoomWithPreview(mDefaultScale, true); 6516 } 6517 } 6518 6519 // Called by JNI to handle a touch on a node representing an email address, 6520 // address, or phone number 6521 private void overrideLoading(String url) { 6522 mCallbackProxy.uiOverrideUrlLoading(url); 6523 } 6524 6525 @Override 6526 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6527 boolean result = false; 6528 if (inEditingMode()) { 6529 result = mWebTextView.requestFocus(direction, 6530 previouslyFocusedRect); 6531 } else { 6532 result = super.requestFocus(direction, previouslyFocusedRect); 6533 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6534 // For cases such as GMail, where we gain focus from a direction, 6535 // we want to move to the first available link. 6536 // FIXME: If there are no visible links, we may not want to 6537 int fakeKeyDirection = 0; 6538 switch(direction) { 6539 case View.FOCUS_UP: 6540 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6541 break; 6542 case View.FOCUS_DOWN: 6543 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6544 break; 6545 case View.FOCUS_LEFT: 6546 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6547 break; 6548 case View.FOCUS_RIGHT: 6549 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6550 break; 6551 default: 6552 return result; 6553 } 6554 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6555 navHandledKey(fakeKeyDirection, 1, true, 0); 6556 } 6557 } 6558 } 6559 return result; 6560 } 6561 6562 @Override 6563 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6564 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6565 6566 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6567 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6568 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6569 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6570 6571 int measuredHeight = heightSize; 6572 int measuredWidth = widthSize; 6573 6574 // Grab the content size from WebViewCore. 6575 int contentHeight = contentToViewDimension(mContentHeight); 6576 int contentWidth = contentToViewDimension(mContentWidth); 6577 6578// Log.d(LOGTAG, "------- measure " + heightMode); 6579 6580 if (heightMode != MeasureSpec.EXACTLY) { 6581 mHeightCanMeasure = true; 6582 measuredHeight = contentHeight; 6583 if (heightMode == MeasureSpec.AT_MOST) { 6584 // If we are larger than the AT_MOST height, then our height can 6585 // no longer be measured and we should scroll internally. 6586 if (measuredHeight > heightSize) { 6587 measuredHeight = heightSize; 6588 mHeightCanMeasure = false; 6589 } 6590 } 6591 } else { 6592 mHeightCanMeasure = false; 6593 } 6594 if (mNativeClass != 0) { 6595 nativeSetHeightCanMeasure(mHeightCanMeasure); 6596 } 6597 // For the width, always use the given size unless unspecified. 6598 if (widthMode == MeasureSpec.UNSPECIFIED) { 6599 mWidthCanMeasure = true; 6600 measuredWidth = contentWidth; 6601 } else { 6602 mWidthCanMeasure = false; 6603 } 6604 6605 synchronized (this) { 6606 setMeasuredDimension(measuredWidth, measuredHeight); 6607 } 6608 } 6609 6610 @Override 6611 public boolean requestChildRectangleOnScreen(View child, 6612 Rect rect, 6613 boolean immediate) { 6614 rect.offset(child.getLeft() - child.getScrollX(), 6615 child.getTop() - child.getScrollY()); 6616 6617 Rect content = new Rect(viewToContentX(mScrollX), 6618 viewToContentY(mScrollY), 6619 viewToContentX(mScrollX + getWidth() 6620 - getVerticalScrollbarWidth()), 6621 viewToContentY(mScrollY + getViewHeightWithTitle())); 6622 content = nativeSubtractLayers(content); 6623 int screenTop = contentToViewY(content.top); 6624 int screenBottom = contentToViewY(content.bottom); 6625 int height = screenBottom - screenTop; 6626 int scrollYDelta = 0; 6627 6628 if (rect.bottom > screenBottom) { 6629 int oneThirdOfScreenHeight = height / 3; 6630 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6631 // If the rectangle is too tall to fit in the bottom two thirds 6632 // of the screen, place it at the top. 6633 scrollYDelta = rect.top - screenTop; 6634 } else { 6635 // If the rectangle will still fit on screen, we want its 6636 // top to be in the top third of the screen. 6637 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6638 } 6639 } else if (rect.top < screenTop) { 6640 scrollYDelta = rect.top - screenTop; 6641 } 6642 6643 int screenLeft = contentToViewX(content.left); 6644 int screenRight = contentToViewX(content.right); 6645 int width = screenRight - screenLeft; 6646 int scrollXDelta = 0; 6647 6648 if (rect.right > screenRight && rect.left > screenLeft) { 6649 if (rect.width() > width) { 6650 scrollXDelta += (rect.left - screenLeft); 6651 } else { 6652 scrollXDelta += (rect.right - screenRight); 6653 } 6654 } else if (rect.left < screenLeft) { 6655 scrollXDelta -= (screenLeft - rect.left); 6656 } 6657 6658 if ((scrollYDelta | scrollXDelta) != 0) { 6659 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6660 } 6661 6662 return false; 6663 } 6664 6665 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6666 String replace, int newStart, int newEnd) { 6667 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6668 arg.mReplace = replace; 6669 arg.mNewStart = newStart; 6670 arg.mNewEnd = newEnd; 6671 mTextGeneration++; 6672 arg.mTextGeneration = mTextGeneration; 6673 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6674 } 6675 6676 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6677 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6678 arg.mEvent = event; 6679 arg.mCurrentText = currentText; 6680 // Increase our text generation number, and pass it to webcore thread 6681 mTextGeneration++; 6682 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6683 // WebKit's document state is not saved until about to leave the page. 6684 // To make sure the host application, like Browser, has the up to date 6685 // document state when it goes to background, we force to save the 6686 // document state. 6687 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6688 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6689 cursorData(), 1000); 6690 } 6691 6692 /* package */ synchronized WebViewCore getWebViewCore() { 6693 return mWebViewCore; 6694 } 6695 6696 //------------------------------------------------------------------------- 6697 // Methods can be called from a separate thread, like WebViewCore 6698 // If it needs to call the View system, it has to send message. 6699 //------------------------------------------------------------------------- 6700 6701 /** 6702 * General handler to receive message coming from webkit thread 6703 */ 6704 class PrivateHandler extends Handler { 6705 @Override 6706 public void handleMessage(Message msg) { 6707 // exclude INVAL_RECT_MSG_ID since it is frequently output 6708 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6709 if (msg.what >= FIRST_PRIVATE_MSG_ID 6710 && msg.what <= LAST_PRIVATE_MSG_ID) { 6711 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6712 - FIRST_PRIVATE_MSG_ID]); 6713 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6714 && msg.what <= LAST_PACKAGE_MSG_ID) { 6715 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6716 - FIRST_PACKAGE_MSG_ID]); 6717 } else { 6718 Log.v(LOGTAG, Integer.toString(msg.what)); 6719 } 6720 } 6721 if (mWebViewCore == null) { 6722 // after WebView's destroy() is called, skip handling messages. 6723 return; 6724 } 6725 switch (msg.what) { 6726 case REMEMBER_PASSWORD: { 6727 mDatabase.setUsernamePassword( 6728 msg.getData().getString("host"), 6729 msg.getData().getString("username"), 6730 msg.getData().getString("password")); 6731 ((Message) msg.obj).sendToTarget(); 6732 break; 6733 } 6734 case NEVER_REMEMBER_PASSWORD: { 6735 mDatabase.setUsernamePassword( 6736 msg.getData().getString("host"), null, null); 6737 ((Message) msg.obj).sendToTarget(); 6738 break; 6739 } 6740 case PREVENT_DEFAULT_TIMEOUT: { 6741 // if timeout happens, cancel it so that it won't block UI 6742 // to continue handling touch events 6743 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6744 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6745 || (msg.arg1 == MotionEvent.ACTION_MOVE 6746 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6747 cancelWebCoreTouchEvent( 6748 viewToContentX((int) mLastTouchX + mScrollX), 6749 viewToContentY((int) mLastTouchY + mScrollY), 6750 true); 6751 } 6752 break; 6753 } 6754 case SWITCH_TO_SHORTPRESS: { 6755 if (mTouchMode == TOUCH_INIT_MODE) { 6756 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6757 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6758 updateSelection(); 6759 } else { 6760 // set to TOUCH_SHORTPRESS_MODE so that it won't 6761 // trigger double tap any more 6762 mTouchMode = TOUCH_SHORTPRESS_MODE; 6763 } 6764 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6765 mTouchMode = TOUCH_DONE_MODE; 6766 } 6767 break; 6768 } 6769 case SWITCH_TO_LONGPRESS: { 6770 if (inFullScreenMode() || mDeferTouchProcess) { 6771 TouchEventData ted = new TouchEventData(); 6772 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6773 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6774 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6775 // metaState for long press is tricky. Should it be the 6776 // state when the press started or when the press was 6777 // released? Or some intermediary key state? For 6778 // simplicity for now, we don't set it. 6779 ted.mMetaState = 0; 6780 ted.mReprocess = mDeferTouchProcess; 6781 if (mDeferTouchProcess) { 6782 ted.mViewX = mLastTouchX; 6783 ted.mViewY = mLastTouchY; 6784 } 6785 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6786 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6787 mTouchMode = TOUCH_DONE_MODE; 6788 performLongClick(); 6789 rebuildWebTextView(); 6790 } 6791 break; 6792 } 6793 case RELEASE_SINGLE_TAP: { 6794 doShortPress(); 6795 break; 6796 } 6797 case SCROLL_BY_MSG_ID: 6798 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6799 break; 6800 case SYNC_SCROLL_TO_MSG_ID: 6801 if (mUserScroll) { 6802 // if user has scrolled explicitly, don't sync the 6803 // scroll position any more 6804 mUserScroll = false; 6805 break; 6806 } 6807 // fall through 6808 case SCROLL_TO_MSG_ID: 6809 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6810 // if we can't scroll to the exact position due to pin, 6811 // send a message to WebCore to re-scroll when we get a 6812 // new picture 6813 mUserScroll = false; 6814 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6815 msg.arg1, msg.arg2); 6816 } 6817 break; 6818 case SPAWN_SCROLL_TO_MSG_ID: 6819 spawnContentScrollTo(msg.arg1, msg.arg2); 6820 break; 6821 case UPDATE_ZOOM_RANGE: { 6822 WebViewCore.RestoreState restoreState 6823 = (WebViewCore.RestoreState) msg.obj; 6824 // mScrollX contains the new minPrefWidth 6825 updateZoomRange(restoreState, getViewWidth(), 6826 restoreState.mScrollX, false); 6827 break; 6828 } 6829 case NEW_PICTURE_MSG_ID: { 6830 // If we've previously delayed deleting a root 6831 // layer, do it now. 6832 if (mDelayedDeleteRootLayer) { 6833 mDelayedDeleteRootLayer = false; 6834 nativeSetRootLayer(0); 6835 } 6836 WebSettings settings = mWebViewCore.getSettings(); 6837 // called for new content 6838 final int viewWidth = getViewWidth(); 6839 final WebViewCore.DrawData draw = 6840 (WebViewCore.DrawData) msg.obj; 6841 final Point viewSize = draw.mViewPoint; 6842 boolean useWideViewport = settings.getUseWideViewPort(); 6843 WebViewCore.RestoreState restoreState = draw.mRestoreState; 6844 boolean hasRestoreState = restoreState != null; 6845 if (hasRestoreState) { 6846 updateZoomRange(restoreState, viewSize.x, 6847 draw.mMinPrefWidth, true); 6848 if (!mDrawHistory) { 6849 mInZoomOverview = false; 6850 6851 if (mInitialScaleInPercent > 0) { 6852 setNewZoomScale(mInitialScaleInPercent / 100.0f, 6853 mInitialScaleInPercent != mTextWrapScale * 100, 6854 false); 6855 } else if (restoreState.mViewScale > 0) { 6856 mTextWrapScale = restoreState.mTextWrapScale; 6857 setNewZoomScale(restoreState.mViewScale, false, 6858 false); 6859 } else { 6860 mInZoomOverview = useWideViewport 6861 && settings.getLoadWithOverviewMode(); 6862 float scale; 6863 if (mInZoomOverview) { 6864 scale = (float) viewWidth 6865 / DEFAULT_VIEWPORT_WIDTH; 6866 } else { 6867 scale = restoreState.mTextWrapScale; 6868 } 6869 setNewZoomScale(scale, Math.abs(scale 6870 - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT, 6871 false); 6872 } 6873 setContentScrollTo(restoreState.mScrollX, 6874 restoreState.mScrollY); 6875 // As we are on a new page, remove the WebTextView. This 6876 // is necessary for page loads driven by webkit, and in 6877 // particular when the user was on a password field, so 6878 // the WebTextView was visible. 6879 clearTextEntry(false); 6880 // update the zoom buttons as the scale can be changed 6881 if (getSettings().getBuiltInZoomControls()) { 6882 updateZoomButtonsEnabled(); 6883 } 6884 } 6885 } 6886 // We update the layout (i.e. request a layout from the 6887 // view system) if the last view size that we sent to 6888 // WebCore matches the view size of the picture we just 6889 // received in the fixed dimension. 6890 final boolean updateLayout = viewSize.x == mLastWidthSent 6891 && viewSize.y == mLastHeightSent; 6892 recordNewContentSize(draw.mWidthHeight.x, 6893 draw.mWidthHeight.y 6894 + (mFindIsUp ? mFindHeight : 0), updateLayout); 6895 if (DebugFlags.WEB_VIEW) { 6896 Rect b = draw.mInvalRegion.getBounds(); 6897 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6898 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6899 } 6900 invalidateContentRect(draw.mInvalRegion.getBounds()); 6901 if (mPictureListener != null) { 6902 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6903 } 6904 if (useWideViewport) { 6905 // limit mZoomOverviewWidth upper bound to 6906 // sMaxViewportWidth so that if the page doesn't behave 6907 // well, the WebView won't go insane. limit the lower 6908 // bound to match the default scale for mobile sites. 6909 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 6910 .max((int) (viewWidth / mDefaultScale), Math 6911 .max(draw.mMinPrefWidth, 6912 draw.mViewPoint.x))); 6913 } 6914 if (!mMinZoomScaleFixed) { 6915 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 6916 } 6917 if (!mDrawHistory && mInZoomOverview) { 6918 // fit the content width to the current view. Ignore 6919 // the rounding error case. 6920 if (Math.abs((viewWidth * mInvActualScale) 6921 - mZoomOverviewWidth) > 1) { 6922 setNewZoomScale((float) viewWidth 6923 / mZoomOverviewWidth, Math.abs(mActualScale 6924 - mTextWrapScale) < MINIMUM_SCALE_INCREMENT, 6925 false); 6926 } 6927 } 6928 if (draw.mFocusSizeChanged && inEditingMode()) { 6929 mFocusSizeChanged = true; 6930 } 6931 if (hasRestoreState) { 6932 mViewManager.postReadyToDrawAll(); 6933 } 6934 break; 6935 } 6936 case WEBCORE_INITIALIZED_MSG_ID: 6937 // nativeCreate sets mNativeClass to a non-zero value 6938 nativeCreate(msg.arg1); 6939 break; 6940 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6941 // Make sure that the textfield is currently focused 6942 // and representing the same node as the pointer. 6943 if (inEditingMode() && 6944 mWebTextView.isSameTextField(msg.arg1)) { 6945 if (msg.getData().getBoolean("password")) { 6946 Spannable text = (Spannable) mWebTextView.getText(); 6947 int start = Selection.getSelectionStart(text); 6948 int end = Selection.getSelectionEnd(text); 6949 mWebTextView.setInPassword(true); 6950 // Restore the selection, which may have been 6951 // ruined by setInPassword. 6952 Spannable pword = 6953 (Spannable) mWebTextView.getText(); 6954 Selection.setSelection(pword, start, end); 6955 // If the text entry has created more events, ignore 6956 // this one. 6957 } else if (msg.arg2 == mTextGeneration) { 6958 mWebTextView.setTextAndKeepSelection( 6959 (String) msg.obj); 6960 } 6961 } 6962 break; 6963 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6964 displaySoftKeyboard(true); 6965 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6966 (WebViewCore.TextSelectionData) msg.obj); 6967 break; 6968 case UPDATE_TEXT_SELECTION_MSG_ID: 6969 // If no textfield was in focus, and the user touched one, 6970 // causing it to send this message, then WebTextView has not 6971 // been set up yet. Rebuild it so it can set its selection. 6972 rebuildWebTextView(); 6973 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6974 (WebViewCore.TextSelectionData) msg.obj); 6975 break; 6976 case RETURN_LABEL: 6977 if (inEditingMode() 6978 && mWebTextView.isSameTextField(msg.arg1)) { 6979 mWebTextView.setHint((String) msg.obj); 6980 InputMethodManager imm 6981 = InputMethodManager.peekInstance(); 6982 // The hint is propagated to the IME in 6983 // onCreateInputConnection. If the IME is already 6984 // active, restart it so that its hint text is updated. 6985 if (imm != null && imm.isActive(mWebTextView)) { 6986 imm.restartInput(mWebTextView); 6987 } 6988 } 6989 break; 6990 case MOVE_OUT_OF_PLUGIN: 6991 navHandledKey(msg.arg1, 1, false, 0); 6992 break; 6993 case UPDATE_TEXT_ENTRY_MSG_ID: 6994 // this is sent after finishing resize in WebViewCore. Make 6995 // sure the text edit box is still on the screen. 6996 selectionDone(); 6997 if (inEditingMode() && nativeCursorIsTextInput()) { 6998 mWebTextView.bringIntoView(); 6999 rebuildWebTextView(); 7000 } 7001 break; 7002 case CLEAR_TEXT_ENTRY: 7003 clearTextEntry(false); 7004 break; 7005 case INVAL_RECT_MSG_ID: { 7006 Rect r = (Rect)msg.obj; 7007 if (r == null) { 7008 invalidate(); 7009 } else { 7010 // we need to scale r from content into view coords, 7011 // which viewInvalidate() does for us 7012 viewInvalidate(r.left, r.top, r.right, r.bottom); 7013 } 7014 break; 7015 } 7016 case IMMEDIATE_REPAINT_MSG_ID: { 7017 invalidate(); 7018 break; 7019 } 7020 case SET_ROOT_LAYER_MSG_ID: { 7021 if (0 == msg.arg1) { 7022 // Null indicates deleting the old layer, but 7023 // don't actually do so until we've got the 7024 // new page to display. 7025 mDelayedDeleteRootLayer = true; 7026 } else { 7027 mDelayedDeleteRootLayer = false; 7028 nativeSetRootLayer(msg.arg1); 7029 invalidate(); 7030 } 7031 break; 7032 } 7033 case REQUEST_FORM_DATA: 7034 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7035 if (mWebTextView.isSameTextField(msg.arg1)) { 7036 mWebTextView.setAdapterCustom(adapter); 7037 } 7038 break; 7039 case RESUME_WEBCORE_PRIORITY: 7040 WebViewCore.resumePriority(); 7041 WebViewCore.resumeUpdatePicture(mWebViewCore); 7042 break; 7043 7044 case LONG_PRESS_CENTER: 7045 // as this is shared by keydown and trackballdown, reset all 7046 // the states 7047 mGotCenterDown = false; 7048 mTrackballDown = false; 7049 performLongClick(); 7050 break; 7051 7052 case WEBCORE_NEED_TOUCH_EVENTS: 7053 mForwardTouchEvents = (msg.arg1 != 0); 7054 break; 7055 7056 case PREVENT_TOUCH_ID: 7057 if (inFullScreenMode()) { 7058 break; 7059 } 7060 if (msg.obj == null) { 7061 if (msg.arg1 == MotionEvent.ACTION_DOWN 7062 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7063 // if prevent default is called from WebCore, UI 7064 // will not handle the rest of the touch events any 7065 // more. 7066 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7067 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7068 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7069 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7070 // the return for the first ACTION_MOVE will decide 7071 // whether UI will handle touch or not. Currently no 7072 // support for alternating prevent default 7073 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7074 : PREVENT_DEFAULT_NO; 7075 } 7076 } else if (msg.arg2 == 0) { 7077 // prevent default is not called in WebCore, so the 7078 // message needs to be reprocessed in UI 7079 TouchEventData ted = (TouchEventData) msg.obj; 7080 switch (ted.mAction) { 7081 case MotionEvent.ACTION_DOWN: 7082 mLastDeferTouchX = ted.mViewX; 7083 mLastDeferTouchY = ted.mViewY; 7084 mDeferTouchMode = TOUCH_INIT_MODE; 7085 break; 7086 case MotionEvent.ACTION_MOVE: { 7087 // no snapping in defer process 7088 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7089 mDeferTouchMode = TOUCH_DRAG_MODE; 7090 mLastDeferTouchX = ted.mViewX; 7091 mLastDeferTouchY = ted.mViewY; 7092 startDrag(); 7093 } 7094 int deltaX = pinLocX((int) (mScrollX 7095 + mLastDeferTouchX - ted.mViewX)) 7096 - mScrollX; 7097 int deltaY = pinLocY((int) (mScrollY 7098 + mLastDeferTouchY - ted.mViewY)) 7099 - mScrollY; 7100 doDrag(deltaX, deltaY); 7101 if (deltaX != 0) mLastDeferTouchX = ted.mViewX; 7102 if (deltaY != 0) mLastDeferTouchY = ted.mViewY; 7103 break; 7104 } 7105 case MotionEvent.ACTION_UP: 7106 case MotionEvent.ACTION_CANCEL: 7107 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7108 // no fling in defer process 7109 mScroller.springback(mScrollX, mScrollY, 0, 7110 computeMaxScrollX(), 0, 7111 computeMaxScrollY()); 7112 invalidate(); 7113 WebViewCore.resumePriority(); 7114 WebViewCore.resumeUpdatePicture(mWebViewCore); 7115 } 7116 mDeferTouchMode = TOUCH_DONE_MODE; 7117 break; 7118 case WebViewCore.ACTION_DOUBLETAP: 7119 // doDoubleTap() needs mLastTouchX/Y as anchor 7120 mLastTouchX = ted.mViewX; 7121 mLastTouchY = ted.mViewY; 7122 doDoubleTap(); 7123 mDeferTouchMode = TOUCH_DONE_MODE; 7124 break; 7125 case WebViewCore.ACTION_LONGPRESS: 7126 HitTestResult hitTest = getHitTestResult(); 7127 if (hitTest != null && hitTest.mType 7128 != HitTestResult.UNKNOWN_TYPE) { 7129 performLongClick(); 7130 rebuildWebTextView(); 7131 } 7132 mDeferTouchMode = TOUCH_DONE_MODE; 7133 break; 7134 } 7135 } 7136 break; 7137 7138 case REQUEST_KEYBOARD: 7139 if (msg.arg1 == 0) { 7140 hideSoftKeyboard(); 7141 } else { 7142 displaySoftKeyboard(false); 7143 } 7144 break; 7145 7146 case FIND_AGAIN: 7147 // Ignore if find has been dismissed. 7148 if (mFindIsUp) { 7149 findAll(mLastFind); 7150 } 7151 break; 7152 7153 case DRAG_HELD_MOTIONLESS: 7154 mHeldMotionless = MOTIONLESS_TRUE; 7155 invalidate(); 7156 // fall through to keep scrollbars awake 7157 7158 case AWAKEN_SCROLL_BARS: 7159 if (mTouchMode == TOUCH_DRAG_MODE 7160 && mHeldMotionless == MOTIONLESS_TRUE) { 7161 awakenScrollBars(ViewConfiguration 7162 .getScrollDefaultDelay(), false); 7163 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7164 .obtainMessage(AWAKEN_SCROLL_BARS), 7165 ViewConfiguration.getScrollDefaultDelay()); 7166 } 7167 break; 7168 7169 case DO_MOTION_UP: 7170 doMotionUp(msg.arg1, msg.arg2); 7171 break; 7172 7173 case SHOW_FULLSCREEN: { 7174 View view = (View) msg.obj; 7175 int npp = msg.arg1; 7176 7177 if (mFullScreenHolder != null) { 7178 Log.w(LOGTAG, "Should not have another full screen."); 7179 mFullScreenHolder.dismiss(); 7180 } 7181 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7182 mFullScreenHolder.setContentView(view); 7183 mFullScreenHolder.setCancelable(false); 7184 mFullScreenHolder.setCanceledOnTouchOutside(false); 7185 mFullScreenHolder.show(); 7186 7187 break; 7188 } 7189 case HIDE_FULLSCREEN: 7190 if (inFullScreenMode()) { 7191 mFullScreenHolder.dismiss(); 7192 mFullScreenHolder = null; 7193 } 7194 break; 7195 7196 case DOM_FOCUS_CHANGED: 7197 if (inEditingMode()) { 7198 nativeClearCursor(); 7199 rebuildWebTextView(); 7200 } 7201 break; 7202 7203 case SHOW_RECT_MSG_ID: { 7204 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7205 int x = mScrollX; 7206 int left = contentToViewX(data.mLeft); 7207 int width = contentToViewDimension(data.mWidth); 7208 int maxWidth = contentToViewDimension(data.mContentWidth); 7209 int viewWidth = getViewWidth(); 7210 if (width < viewWidth) { 7211 // center align 7212 x += left + width / 2 - mScrollX - viewWidth / 2; 7213 } else { 7214 x += (int) (left + data.mXPercentInDoc * width 7215 - mScrollX - data.mXPercentInView * viewWidth); 7216 } 7217 if (DebugFlags.WEB_VIEW) { 7218 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7219 width + ",maxWidth=" + maxWidth + 7220 ",viewWidth=" + viewWidth + ",x=" 7221 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7222 ",xPercentInView=" + data.mXPercentInView+ ")"); 7223 } 7224 // use the passing content width to cap x as the current 7225 // mContentWidth may not be updated yet 7226 x = Math.max(0, 7227 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7228 int top = contentToViewY(data.mTop); 7229 int height = contentToViewDimension(data.mHeight); 7230 int maxHeight = contentToViewDimension(data.mContentHeight); 7231 int viewHeight = getViewHeight(); 7232 int y = (int) (top + data.mYPercentInDoc * height - 7233 data.mYPercentInView * viewHeight); 7234 if (DebugFlags.WEB_VIEW) { 7235 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7236 height + ",maxHeight=" + maxHeight + 7237 ",viewHeight=" + viewHeight + ",y=" 7238 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7239 ",yPercentInView=" + data.mYPercentInView+ ")"); 7240 } 7241 // use the passing content height to cap y as the current 7242 // mContentHeight may not be updated yet 7243 y = Math.max(0, 7244 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7245 // We need to take into account the visible title height 7246 // when scrolling since y is an absolute view position. 7247 y = Math.max(0, y - getVisibleTitleHeight()); 7248 scrollTo(x, y); 7249 } 7250 break; 7251 7252 case CENTER_FIT_RECT: 7253 Rect r = (Rect)msg.obj; 7254 mInZoomOverview = false; 7255 centerFitRect(r.left, r.top, r.width(), r.height()); 7256 break; 7257 7258 case SET_SCROLLBAR_MODES: 7259 mHorizontalScrollBarMode = msg.arg1; 7260 mVerticalScrollBarMode = msg.arg2; 7261 break; 7262 7263 default: 7264 super.handleMessage(msg); 7265 break; 7266 } 7267 } 7268 } 7269 7270 /** 7271 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7272 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7273 */ 7274 private void updateTextSelectionFromMessage(int nodePointer, 7275 int textGeneration, WebViewCore.TextSelectionData data) { 7276 if (inEditingMode() 7277 && mWebTextView.isSameTextField(nodePointer) 7278 && textGeneration == mTextGeneration) { 7279 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7280 } 7281 } 7282 7283 // Class used to use a dropdown for a <select> element 7284 private class InvokeListBox implements Runnable { 7285 // Whether the listbox allows multiple selection. 7286 private boolean mMultiple; 7287 // Passed in to a list with multiple selection to tell 7288 // which items are selected. 7289 private int[] mSelectedArray; 7290 // Passed in to a list with single selection to tell 7291 // where the initial selection is. 7292 private int mSelection; 7293 7294 private Container[] mContainers; 7295 7296 // Need these to provide stable ids to my ArrayAdapter, 7297 // which normally does not have stable ids. (Bug 1250098) 7298 private class Container extends Object { 7299 /** 7300 * Possible values for mEnabled. Keep in sync with OptionStatus in 7301 * WebViewCore.cpp 7302 */ 7303 final static int OPTGROUP = -1; 7304 final static int OPTION_DISABLED = 0; 7305 final static int OPTION_ENABLED = 1; 7306 7307 String mString; 7308 int mEnabled; 7309 int mId; 7310 7311 public String toString() { 7312 return mString; 7313 } 7314 } 7315 7316 /** 7317 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7318 * and allow filtering. 7319 */ 7320 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7321 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7322 super(context, 7323 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7324 com.android.internal.R.layout.select_dialog_singlechoice, 7325 objects); 7326 } 7327 7328 @Override 7329 public View getView(int position, View convertView, 7330 ViewGroup parent) { 7331 // Always pass in null so that we will get a new CheckedTextView 7332 // Otherwise, an item which was previously used as an <optgroup> 7333 // element (i.e. has no check), could get used as an <option> 7334 // element, which needs a checkbox/radio, but it would not have 7335 // one. 7336 convertView = super.getView(position, null, parent); 7337 Container c = item(position); 7338 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7339 // ListView does not draw dividers between disabled and 7340 // enabled elements. Use a LinearLayout to provide dividers 7341 LinearLayout layout = new LinearLayout(mContext); 7342 layout.setOrientation(LinearLayout.VERTICAL); 7343 if (position > 0) { 7344 View dividerTop = new View(mContext); 7345 dividerTop.setBackgroundResource( 7346 android.R.drawable.divider_horizontal_bright); 7347 layout.addView(dividerTop); 7348 } 7349 7350 if (Container.OPTGROUP == c.mEnabled) { 7351 // Currently select_dialog_multichoice and 7352 // select_dialog_singlechoice are CheckedTextViews. If 7353 // that changes, the class cast will no longer be valid. 7354 Assert.assertTrue( 7355 convertView instanceof CheckedTextView); 7356 ((CheckedTextView) convertView).setCheckMarkDrawable( 7357 null); 7358 } else { 7359 // c.mEnabled == Container.OPTION_DISABLED 7360 // Draw the disabled element in a disabled state. 7361 convertView.setEnabled(false); 7362 } 7363 7364 layout.addView(convertView); 7365 if (position < getCount() - 1) { 7366 View dividerBottom = new View(mContext); 7367 dividerBottom.setBackgroundResource( 7368 android.R.drawable.divider_horizontal_bright); 7369 layout.addView(dividerBottom); 7370 } 7371 return layout; 7372 } 7373 return convertView; 7374 } 7375 7376 @Override 7377 public boolean hasStableIds() { 7378 // AdapterView's onChanged method uses this to determine whether 7379 // to restore the old state. Return false so that the old (out 7380 // of date) state does not replace the new, valid state. 7381 return false; 7382 } 7383 7384 private Container item(int position) { 7385 if (position < 0 || position >= getCount()) { 7386 return null; 7387 } 7388 return (Container) getItem(position); 7389 } 7390 7391 @Override 7392 public long getItemId(int position) { 7393 Container item = item(position); 7394 if (item == null) { 7395 return -1; 7396 } 7397 return item.mId; 7398 } 7399 7400 @Override 7401 public boolean areAllItemsEnabled() { 7402 return false; 7403 } 7404 7405 @Override 7406 public boolean isEnabled(int position) { 7407 Container item = item(position); 7408 if (item == null) { 7409 return false; 7410 } 7411 return Container.OPTION_ENABLED == item.mEnabled; 7412 } 7413 } 7414 7415 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7416 mMultiple = true; 7417 mSelectedArray = selected; 7418 7419 int length = array.length; 7420 mContainers = new Container[length]; 7421 for (int i = 0; i < length; i++) { 7422 mContainers[i] = new Container(); 7423 mContainers[i].mString = array[i]; 7424 mContainers[i].mEnabled = enabled[i]; 7425 mContainers[i].mId = i; 7426 } 7427 } 7428 7429 private InvokeListBox(String[] array, int[] enabled, int selection) { 7430 mSelection = selection; 7431 mMultiple = false; 7432 7433 int length = array.length; 7434 mContainers = new Container[length]; 7435 for (int i = 0; i < length; i++) { 7436 mContainers[i] = new Container(); 7437 mContainers[i].mString = array[i]; 7438 mContainers[i].mEnabled = enabled[i]; 7439 mContainers[i].mId = i; 7440 } 7441 } 7442 7443 /* 7444 * Whenever the data set changes due to filtering, this class ensures 7445 * that the checked item remains checked. 7446 */ 7447 private class SingleDataSetObserver extends DataSetObserver { 7448 private long mCheckedId; 7449 private ListView mListView; 7450 private Adapter mAdapter; 7451 7452 /* 7453 * Create a new observer. 7454 * @param id The ID of the item to keep checked. 7455 * @param l ListView for getting and clearing the checked states 7456 * @param a Adapter for getting the IDs 7457 */ 7458 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7459 mCheckedId = id; 7460 mListView = l; 7461 mAdapter = a; 7462 } 7463 7464 public void onChanged() { 7465 // The filter may have changed which item is checked. Find the 7466 // item that the ListView thinks is checked. 7467 int position = mListView.getCheckedItemPosition(); 7468 long id = mAdapter.getItemId(position); 7469 if (mCheckedId != id) { 7470 // Clear the ListView's idea of the checked item, since 7471 // it is incorrect 7472 mListView.clearChoices(); 7473 // Search for mCheckedId. If it is in the filtered list, 7474 // mark it as checked 7475 int count = mAdapter.getCount(); 7476 for (int i = 0; i < count; i++) { 7477 if (mAdapter.getItemId(i) == mCheckedId) { 7478 mListView.setItemChecked(i, true); 7479 break; 7480 } 7481 } 7482 } 7483 } 7484 7485 public void onInvalidate() {} 7486 } 7487 7488 public void run() { 7489 final ListView listView = (ListView) LayoutInflater.from(mContext) 7490 .inflate(com.android.internal.R.layout.select_dialog, null); 7491 final MyArrayListAdapter adapter = new 7492 MyArrayListAdapter(mContext, mContainers, mMultiple); 7493 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7494 .setView(listView).setCancelable(true) 7495 .setInverseBackgroundForced(true); 7496 7497 if (mMultiple) { 7498 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7499 public void onClick(DialogInterface dialog, int which) { 7500 mWebViewCore.sendMessage( 7501 EventHub.LISTBOX_CHOICES, 7502 adapter.getCount(), 0, 7503 listView.getCheckedItemPositions()); 7504 }}); 7505 b.setNegativeButton(android.R.string.cancel, 7506 new DialogInterface.OnClickListener() { 7507 public void onClick(DialogInterface dialog, int which) { 7508 mWebViewCore.sendMessage( 7509 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7510 }}); 7511 } 7512 final AlertDialog dialog = b.create(); 7513 listView.setAdapter(adapter); 7514 listView.setFocusableInTouchMode(true); 7515 // There is a bug (1250103) where the checks in a ListView with 7516 // multiple items selected are associated with the positions, not 7517 // the ids, so the items do not properly retain their checks when 7518 // filtered. Do not allow filtering on multiple lists until 7519 // that bug is fixed. 7520 7521 listView.setTextFilterEnabled(!mMultiple); 7522 if (mMultiple) { 7523 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7524 int length = mSelectedArray.length; 7525 for (int i = 0; i < length; i++) { 7526 listView.setItemChecked(mSelectedArray[i], true); 7527 } 7528 } else { 7529 listView.setOnItemClickListener(new OnItemClickListener() { 7530 public void onItemClick(AdapterView parent, View v, 7531 int position, long id) { 7532 mWebViewCore.sendMessage( 7533 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 7534 dialog.dismiss(); 7535 } 7536 }); 7537 if (mSelection != -1) { 7538 listView.setSelection(mSelection); 7539 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7540 listView.setItemChecked(mSelection, true); 7541 DataSetObserver observer = new SingleDataSetObserver( 7542 adapter.getItemId(mSelection), listView, adapter); 7543 adapter.registerDataSetObserver(observer); 7544 } 7545 } 7546 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7547 public void onCancel(DialogInterface dialog) { 7548 mWebViewCore.sendMessage( 7549 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7550 } 7551 }); 7552 dialog.show(); 7553 } 7554 } 7555 7556 /* 7557 * Request a dropdown menu for a listbox with multiple selection. 7558 * 7559 * @param array Labels for the listbox. 7560 * @param enabledArray State for each element in the list. See static 7561 * integers in Container class. 7562 * @param selectedArray Which positions are initally selected. 7563 */ 7564 void requestListBox(String[] array, int[] enabledArray, int[] 7565 selectedArray) { 7566 mPrivateHandler.post( 7567 new InvokeListBox(array, enabledArray, selectedArray)); 7568 } 7569 7570 private void updateZoomRange(WebViewCore.RestoreState restoreState, 7571 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 7572 if (restoreState.mMinScale == 0) { 7573 if (restoreState.mMobileSite) { 7574 if (minPrefWidth > Math.max(0, viewWidth)) { 7575 mMinZoomScale = (float) viewWidth / minPrefWidth; 7576 mMinZoomScaleFixed = false; 7577 if (updateZoomOverview) { 7578 WebSettings settings = getSettings(); 7579 mInZoomOverview = settings.getUseWideViewPort() && 7580 settings.getLoadWithOverviewMode(); 7581 } 7582 } else { 7583 mMinZoomScale = restoreState.mDefaultScale; 7584 mMinZoomScaleFixed = true; 7585 } 7586 } else { 7587 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 7588 mMinZoomScaleFixed = false; 7589 } 7590 } else { 7591 mMinZoomScale = restoreState.mMinScale; 7592 mMinZoomScaleFixed = true; 7593 } 7594 if (restoreState.mMaxScale == 0) { 7595 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 7596 } else { 7597 mMaxZoomScale = restoreState.mMaxScale; 7598 } 7599 } 7600 7601 /* 7602 * Request a dropdown menu for a listbox with single selection or a single 7603 * <select> element. 7604 * 7605 * @param array Labels for the listbox. 7606 * @param enabledArray State for each element in the list. See static 7607 * integers in Container class. 7608 * @param selection Which position is initally selected. 7609 */ 7610 void requestListBox(String[] array, int[] enabledArray, int selection) { 7611 mPrivateHandler.post( 7612 new InvokeListBox(array, enabledArray, selection)); 7613 } 7614 7615 // called by JNI 7616 private void sendMoveFocus(int frame, int node) { 7617 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7618 new WebViewCore.CursorData(frame, node, 0, 0)); 7619 } 7620 7621 // called by JNI 7622 private void sendMoveMouse(int frame, int node, int x, int y) { 7623 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7624 new WebViewCore.CursorData(frame, node, x, y)); 7625 } 7626 7627 /* 7628 * Send a mouse move event to the webcore thread. 7629 * 7630 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7631 * which wants key events, but it is not the focus. This 7632 * will make the visual appear as though nothing is in 7633 * focus. Remove the WebTextView, if present, and stop 7634 * drawing the blinking caret. 7635 * called by JNI 7636 */ 7637 private void sendMoveMouseIfLatest(boolean removeFocus) { 7638 if (removeFocus) { 7639 clearTextEntry(true); 7640 } 7641 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7642 cursorData()); 7643 } 7644 7645 // called by JNI 7646 private void sendMotionUp(int touchGeneration, 7647 int frame, int node, int x, int y) { 7648 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7649 touchUpData.mMoveGeneration = touchGeneration; 7650 touchUpData.mFrame = frame; 7651 touchUpData.mNode = node; 7652 touchUpData.mX = x; 7653 touchUpData.mY = y; 7654 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7655 } 7656 7657 7658 private int getScaledMaxXScroll() { 7659 int width; 7660 if (mHeightCanMeasure == false) { 7661 width = getViewWidth() / 4; 7662 } else { 7663 Rect visRect = new Rect(); 7664 calcOurVisibleRect(visRect); 7665 width = visRect.width() / 2; 7666 } 7667 // FIXME the divisor should be retrieved from somewhere 7668 return viewToContentX(width); 7669 } 7670 7671 private int getScaledMaxYScroll() { 7672 int height; 7673 if (mHeightCanMeasure == false) { 7674 height = getViewHeight() / 4; 7675 } else { 7676 Rect visRect = new Rect(); 7677 calcOurVisibleRect(visRect); 7678 height = visRect.height() / 2; 7679 } 7680 // FIXME the divisor should be retrieved from somewhere 7681 // the closest thing today is hard-coded into ScrollView.java 7682 // (from ScrollView.java, line 363) int maxJump = height/2; 7683 return Math.round(height * mInvActualScale); 7684 } 7685 7686 /** 7687 * Called by JNI to invalidate view 7688 */ 7689 private void viewInvalidate() { 7690 invalidate(); 7691 } 7692 7693 /** 7694 * Pass the key to the plugin. This assumes that nativeFocusIsPlugin() 7695 * returned true. 7696 */ 7697 private void letPluginHandleNavKey(int keyCode, long time, boolean down) { 7698 int keyEventAction; 7699 int eventHubAction; 7700 if (down) { 7701 keyEventAction = KeyEvent.ACTION_DOWN; 7702 eventHubAction = EventHub.KEY_DOWN; 7703 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7704 } else { 7705 keyEventAction = KeyEvent.ACTION_UP; 7706 eventHubAction = EventHub.KEY_UP; 7707 } 7708 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7709 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7710 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7711 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7712 , 0, 0, 0); 7713 mWebViewCore.sendMessage(eventHubAction, event); 7714 } 7715 7716 // return true if the key was handled 7717 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7718 long time) { 7719 if (mNativeClass == 0) { 7720 return false; 7721 } 7722 mLastCursorTime = time; 7723 mLastCursorBounds = nativeGetCursorRingBounds(); 7724 boolean keyHandled 7725 = nativeMoveCursor(keyCode, count, noScroll) == false; 7726 if (DebugFlags.WEB_VIEW) { 7727 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7728 + " mLastCursorTime=" + mLastCursorTime 7729 + " handled=" + keyHandled); 7730 } 7731 if (keyHandled == false || mHeightCanMeasure == false) { 7732 return keyHandled; 7733 } 7734 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7735 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7736 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7737 Rect visRect = new Rect(); 7738 calcOurVisibleRect(visRect); 7739 Rect outset = new Rect(visRect); 7740 int maxXScroll = visRect.width() / 2; 7741 int maxYScroll = visRect.height() / 2; 7742 outset.inset(-maxXScroll, -maxYScroll); 7743 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7744 return keyHandled; 7745 } 7746 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7747 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7748 maxXScroll); 7749 if (maxH > 0) { 7750 pinScrollBy(maxH, 0, true, 0); 7751 } else { 7752 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7753 -maxXScroll); 7754 if (maxH < 0) { 7755 pinScrollBy(maxH, 0, true, 0); 7756 } 7757 } 7758 if (mLastCursorBounds.isEmpty()) return keyHandled; 7759 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7760 return keyHandled; 7761 } 7762 if (DebugFlags.WEB_VIEW) { 7763 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7764 + contentCursorRingBounds); 7765 } 7766 requestRectangleOnScreen(viewCursorRingBounds); 7767 mUserScroll = true; 7768 return keyHandled; 7769 } 7770 7771 /** 7772 * Set the background color. It's white by default. Pass 7773 * zero to make the view transparent. 7774 * @param color the ARGB color described by Color.java 7775 */ 7776 public void setBackgroundColor(int color) { 7777 mBackgroundColor = color; 7778 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7779 } 7780 7781 public void debugDump() { 7782 nativeDebugDump(); 7783 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7784 } 7785 7786 /** 7787 * Draw the HTML page into the specified canvas. This call ignores any 7788 * view-specific zoom, scroll offset, or other changes. It does not draw 7789 * any view-specific chrome, such as progress or URL bars. 7790 * 7791 * @hide only needs to be accessible to Browser and testing 7792 */ 7793 public void drawPage(Canvas canvas) { 7794 mWebViewCore.drawContentPicture(canvas, 0, false, false); 7795 } 7796 7797 /** 7798 * Set the time to wait between passing touches to WebCore. See also the 7799 * TOUCH_SENT_INTERVAL member for further discussion. 7800 * 7801 * @hide This is only used by the DRT test application. 7802 */ 7803 public void setTouchInterval(int interval) { 7804 mCurrentTouchInterval = interval; 7805 } 7806 7807 /** 7808 * Update our cache with updatedText. 7809 * @param updatedText The new text to put in our cache. 7810 */ 7811 /* package */ void updateCachedTextfield(String updatedText) { 7812 // Also place our generation number so that when we look at the cache 7813 // we recognize that it is up to date. 7814 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7815 } 7816 7817 private native int nativeCacheHitFramePointer(); 7818 private native Rect nativeCacheHitNodeBounds(); 7819 private native int nativeCacheHitNodePointer(); 7820 /* package */ native void nativeClearCursor(); 7821 private native void nativeCreate(int ptr); 7822 private native int nativeCursorFramePointer(); 7823 private native Rect nativeCursorNodeBounds(); 7824 private native int nativeCursorNodePointer(); 7825 /* package */ native boolean nativeCursorMatchesFocus(); 7826 private native boolean nativeCursorIntersects(Rect visibleRect); 7827 private native boolean nativeCursorIsAnchor(); 7828 private native boolean nativeCursorIsTextInput(); 7829 private native Point nativeCursorPosition(); 7830 private native String nativeCursorText(); 7831 /** 7832 * Returns true if the native cursor node says it wants to handle key events 7833 * (ala plugins). This can only be called if mNativeClass is non-zero! 7834 */ 7835 private native boolean nativeCursorWantsKeyEvents(); 7836 private native void nativeDebugDump(); 7837 private native void nativeDestroy(); 7838 private native boolean nativeEvaluateLayersAnimations(); 7839 private native void nativeExtendSelection(int x, int y); 7840 private native void nativeDrawExtras(Canvas canvas, int extra); 7841 private native void nativeDumpDisplayTree(String urlOrNull); 7842 private native int nativeFindAll(String findLower, String findUpper); 7843 private native void nativeFindNext(boolean forward); 7844 /* package */ native int nativeFocusCandidateFramePointer(); 7845 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7846 /* package */ native boolean nativeFocusCandidateIsPassword(); 7847 private native boolean nativeFocusCandidateIsRtlText(); 7848 private native boolean nativeFocusCandidateIsTextInput(); 7849 /* package */ native int nativeFocusCandidateMaxLength(); 7850 /* package */ native String nativeFocusCandidateName(); 7851 private native Rect nativeFocusCandidateNodeBounds(); 7852 /* package */ native int nativeFocusCandidatePointer(); 7853 private native String nativeFocusCandidateText(); 7854 private native int nativeFocusCandidateTextSize(); 7855 /** 7856 * Returns an integer corresponding to WebView.cpp::type. 7857 * See WebTextView.setType() 7858 */ 7859 private native int nativeFocusCandidateType(); 7860 private native boolean nativeFocusIsPlugin(); 7861 private native Rect nativeFocusNodeBounds(); 7862 /* package */ native int nativeFocusNodePointer(); 7863 private native Rect nativeGetCursorRingBounds(); 7864 private native String nativeGetSelection(); 7865 private native boolean nativeHasCursorNode(); 7866 private native boolean nativeHasFocusNode(); 7867 private native void nativeHideCursor(); 7868 private native boolean nativeHitSelection(int x, int y); 7869 private native String nativeImageURI(int x, int y); 7870 private native void nativeInstrumentReport(); 7871 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7872 // return true if the page has been scrolled 7873 private native boolean nativeMotionUp(int x, int y, int slop); 7874 // returns false if it handled the key 7875 private native boolean nativeMoveCursor(int keyCode, int count, 7876 boolean noScroll); 7877 private native int nativeMoveGeneration(); 7878 private native void nativeMoveSelection(int x, int y); 7879 private native boolean nativePointInNavCache(int x, int y, int slop); 7880 // Like many other of our native methods, you must make sure that 7881 // mNativeClass is not null before calling this method. 7882 private native void nativeRecordButtons(boolean focused, 7883 boolean pressed, boolean invalidate); 7884 private native void nativeResetSelection(); 7885 private native void nativeSelectAll(); 7886 private native void nativeSelectBestAt(Rect rect); 7887 private native int nativeSelectionX(); 7888 private native int nativeSelectionY(); 7889 private native int nativeFindIndex(); 7890 private native void nativeSetExtendSelection(); 7891 private native void nativeSetFindIsEmpty(); 7892 private native void nativeSetFindIsUp(boolean isUp); 7893 private native void nativeSetFollowedLink(boolean followed); 7894 private native void nativeSetHeightCanMeasure(boolean measure); 7895 private native void nativeSetRootLayer(int layer); 7896 private native void nativeSetSelectionPointer(boolean set, 7897 float scale, int x, int y); 7898 private native boolean nativeStartSelection(int x, int y); 7899 private native void nativeSetSelectionRegion(boolean set); 7900 private native Rect nativeSubtractLayers(Rect content); 7901 private native int nativeTextGeneration(); 7902 // Never call this version except by updateCachedTextfield(String) - 7903 // we always want to pass in our generation number. 7904 private native void nativeUpdateCachedTextfield(String updatedText, 7905 int generation); 7906 private native boolean nativeWordSelection(int x, int y); 7907 // return NO_LEFTEDGE means failure. 7908 private static final int NO_LEFTEDGE = -1; 7909 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 7910} 7911