WebView.java revision 0df0269832a5a400d5c103457ade32b1f9734a3b
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.BroadcastReceiver; 24import android.content.ClipboardManager; 25import android.content.Context; 26import android.content.DialogInterface; 27import android.content.DialogInterface.OnCancelListener; 28import android.content.Intent; 29import android.content.IntentFilter; 30import android.content.pm.PackageInfo; 31import android.content.pm.PackageManager; 32import android.content.res.Configuration; 33import android.content.res.Resources; 34import android.database.DataSetObserver; 35import android.graphics.Bitmap; 36import android.graphics.BitmapFactory; 37import android.graphics.BitmapShader; 38import android.graphics.Canvas; 39import android.graphics.Color; 40import android.graphics.CornerPathEffect; 41import android.graphics.DrawFilter; 42import android.graphics.Paint; 43import android.graphics.PaintFlagsDrawFilter; 44import android.graphics.Picture; 45import android.graphics.Point; 46import android.graphics.Rect; 47import android.graphics.RectF; 48import android.graphics.Region; 49import android.graphics.Shader; 50import android.graphics.drawable.Drawable; 51import android.net.Uri; 52import android.net.http.SslCertificate; 53import android.os.AsyncTask; 54import android.os.Bundle; 55import android.os.Handler; 56import android.os.Message; 57import android.provider.Settings; 58import android.speech.tts.TextToSpeech; 59import android.text.Selection; 60import android.text.Spannable; 61import android.util.AttributeSet; 62import android.util.EventLog; 63import android.util.Log; 64import android.view.Gravity; 65import android.view.KeyCharacterMap; 66import android.view.KeyEvent; 67import android.view.LayoutInflater; 68import android.view.MotionEvent; 69import android.view.ScaleGestureDetector; 70import android.view.SoundEffectConstants; 71import android.view.VelocityTracker; 72import android.view.View; 73import android.view.ViewConfiguration; 74import android.view.ViewGroup; 75import android.view.ViewParent; 76import android.view.ViewTreeObserver; 77import android.view.accessibility.AccessibilityManager; 78import android.view.inputmethod.EditorInfo; 79import android.view.inputmethod.InputConnection; 80import android.view.inputmethod.InputMethodManager; 81import android.webkit.WebTextView.AutoCompleteAdapter; 82import android.webkit.WebViewCore.EventHub; 83import android.webkit.WebViewCore.TouchEventData; 84import android.webkit.WebViewCore.TouchHighlightData; 85import android.widget.AbsoluteLayout; 86import android.widget.Adapter; 87import android.widget.AdapterView; 88import android.widget.AdapterView.OnItemClickListener; 89import android.widget.ArrayAdapter; 90import android.widget.CheckedTextView; 91import android.widget.EdgeGlow; 92import android.widget.LinearLayout; 93import android.widget.ListView; 94import android.widget.OverScroller; 95import android.widget.Toast; 96 97import java.io.File; 98import java.io.FileInputStream; 99import java.io.FileNotFoundException; 100import java.io.FileOutputStream; 101import java.net.URLDecoder; 102import java.util.ArrayList; 103import java.util.HashMap; 104import java.util.HashSet; 105import java.util.List; 106import java.util.Map; 107import java.util.Set; 108import java.util.regex.Matcher; 109import java.util.regex.Pattern; 110 111import junit.framework.Assert; 112 113/** 114 * <p>A View that displays web pages. This class is the basis upon which you 115 * can roll your own web browser or simply display some online content within your Activity. 116 * It uses the WebKit rendering engine to display 117 * web pages and includes methods to navigate forward and backward 118 * through a history, zoom in and out, perform text searches and more.</p> 119 * <p>To enable the built-in zoom, set 120 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 121 * (introduced in API version 3). 122 * <p>Note that, in order for your Activity to access the Internet and load web pages 123 * in a WebView, you must add the {@code INTERNET} permissions to your 124 * Android Manifest file:</p> 125 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 126 * 127 * <p>This must be a child of the <a 128 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 129 * element.</p> 130 * 131 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 132 * tutorial</a>.</p> 133 * 134 * <h3>Basic usage</h3> 135 * 136 * <p>By default, a WebView provides no browser-like widgets, does not 137 * enable JavaScript and web page errors are ignored. If your goal is only 138 * to display some HTML as a part of your UI, this is probably fine; 139 * the user won't need to interact with the web page beyond reading 140 * it, and the web page won't need to interact with the user. If you 141 * actually want a full-blown web browser, then you probably want to 142 * invoke the Browser application with a URL Intent rather than show it 143 * with a WebView. For example: 144 * <pre> 145 * Uri uri = Uri.parse("http://www.example.com"); 146 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 147 * startActivity(intent); 148 * </pre> 149 * <p>See {@link android.content.Intent} for more information.</p> 150 * 151 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 152 * or set the entire Activity window as a WebView during {@link 153 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 154 * <pre class="prettyprint"> 155 * WebView webview = new WebView(this); 156 * setContentView(webview); 157 * </pre> 158 * 159 * <p>Then load the desired web page:</p> 160 * <pre> 161 * // Simplest usage: note that an exception will NOT be thrown 162 * // if there is an error loading this page (see below). 163 * webview.loadUrl("http://slashdot.org/"); 164 * 165 * // OR, you can also load from an HTML string: 166 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 167 * webview.loadData(summary, "text/html", "utf-8"); 168 * // ... although note that there are restrictions on what this HTML can do. 169 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 170 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 171 * </pre> 172 * 173 * <p>A WebView has several customization points where you can add your 174 * own behavior. These are:</p> 175 * 176 * <ul> 177 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 178 * This class is called when something that might impact a 179 * browser UI happens, for instance, progress updates and 180 * JavaScript alerts are sent here (see <a 181 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 182 * </li> 183 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 184 * It will be called when things happen that impact the 185 * rendering of the content, eg, errors or form submissions. You 186 * can also intercept URL loading here (via {@link 187 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 188 * shouldOverrideUrlLoading()}).</li> 189 * <li>Modifying the {@link android.webkit.WebSettings}, such as 190 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 191 * setJavaScriptEnabled()}. </li> 192 * <li>Adding JavaScript-to-Java interfaces with the {@link 193 * android.webkit.WebView#addJavascriptInterface} method. 194 * This lets you bind Java objects into the WebView so they can be 195 * controlled from the web pages JavaScript.</li> 196 * </ul> 197 * 198 * <p>Here's a more complicated example, showing error handling, 199 * settings, and progress notification:</p> 200 * 201 * <pre class="prettyprint"> 202 * // Let's display the progress in the activity title bar, like the 203 * // browser app does. 204 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 205 * 206 * webview.getSettings().setJavaScriptEnabled(true); 207 * 208 * final Activity activity = this; 209 * webview.setWebChromeClient(new WebChromeClient() { 210 * public void onProgressChanged(WebView view, int progress) { 211 * // Activities and WebViews measure progress with different scales. 212 * // The progress meter will automatically disappear when we reach 100% 213 * activity.setProgress(progress * 1000); 214 * } 215 * }); 216 * webview.setWebViewClient(new WebViewClient() { 217 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 218 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 219 * } 220 * }); 221 * 222 * webview.loadUrl("http://slashdot.org/"); 223 * </pre> 224 * 225 * <h3>Cookie and window management</h3> 226 * 227 * <p>For obvious security reasons, your application has its own 228 * cache, cookie store etc.—it does not share the Browser 229 * application's data. Cookies are managed on a separate thread, so 230 * operations like index building don't block the UI 231 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 232 * if you want to use cookies in your application. 233 * </p> 234 * 235 * <p>By default, requests by the HTML to open new windows are 236 * ignored. This is true whether they be opened by JavaScript or by 237 * the target attribute on a link. You can customize your 238 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 239 * and render them in whatever manner you want.</p> 240 * 241 * <p>The standard behavior for an Activity is to be destroyed and 242 * recreated when the device orientation or any other configuration changes. This will cause 243 * the WebView to reload the current page. If you don't want that, you 244 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 245 * changes, and then just leave the WebView alone. It'll automatically 246 * re-orient itself as appropriate. Read <a 247 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 248 * more information about how to handle configuration changes during runtime.</p> 249 * 250 * 251 * <h3>Building web pages to support different screen densities</h3> 252 * 253 * <p>The screen density of a device is based on the screen resolution. A screen with low density 254 * has fewer available pixels per inch, where a screen with high density 255 * has more — sometimes significantly more — pixels per inch. The density of a 256 * screen is important because, other things being equal, a UI element (such as a button) whose 257 * height and width are defined in terms of screen pixels will appear larger on the lower density 258 * screen and smaller on the higher density screen. 259 * For simplicity, Android collapses all actual screen densities into three generalized densities: 260 * high, medium, and low.</p> 261 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 262 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 263 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 264 * are bigger). 265 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 266 * you (as a web developer) target screens with different screen densities.</p> 267 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 268 * <ul> 269 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 270 * default scaling factor used for the current device. For example, if the value of {@code 271 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 272 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 273 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 274 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 275 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 276 * (discussed below), then you can stop this default scaling behavior.</li> 277 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 278 * densities for which this style sheet is to be used. The corresponding value should be either 279 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 280 * density, or high density screens, respectively. For example: 281 * <pre> 282 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 283 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 284 * which is the high density pixel ratio.</p> 285 * </li> 286 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 287 * this to specify the target density for which the web page is designed, using the following 288 * values: 289 * <ul> 290 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 291 * occurs.</li> 292 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 293 * as appropriate.</li> 294 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 295 * low density screens scale down. This is also the default behavior.</li> 296 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 297 * as appropriate.</li> 298 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 299 * values are 70-400).</li> 300 * </ul> 301 * <p>Here's an example meta tag to specify the target density:</p> 302 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 303 * </ul> 304 * <p>If you want to modify your web page for different densities, by using the {@code 305 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 306 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 307 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 308 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 309 * 310 * 311 */ 312@Widget 313public class WebView extends AbsoluteLayout 314 implements ViewTreeObserver.OnGlobalFocusChangeListener, 315 ViewGroup.OnHierarchyChangeListener { 316 317 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 318 // the screen all-the-time. Good for profiling our drawing code 319 static private final boolean AUTO_REDRAW_HACK = false; 320 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 321 private boolean mAutoRedraw; 322 323 // Reference to the AlertDialog displayed by InvokeListBox. 324 // It's used to dismiss the dialog in destroy if not done before. 325 private AlertDialog mListBoxDialog = null; 326 327 static final String LOGTAG = "webview"; 328 329 private ZoomManager mZoomManager; 330 331 private Rect mGLRectViewport; 332 333 /** 334 * Transportation object for returning WebView across thread boundaries. 335 */ 336 public class WebViewTransport { 337 private WebView mWebview; 338 339 /** 340 * Set the WebView to the transportation object. 341 * @param webview The WebView to transport. 342 */ 343 public synchronized void setWebView(WebView webview) { 344 mWebview = webview; 345 } 346 347 /** 348 * Return the WebView object. 349 * @return WebView The transported WebView object. 350 */ 351 public synchronized WebView getWebView() { 352 return mWebview; 353 } 354 } 355 356 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 357 private final CallbackProxy mCallbackProxy; 358 359 private final WebViewDatabase mDatabase; 360 361 // SSL certificate for the main top-level page (if secure) 362 private SslCertificate mCertificate; 363 364 // Native WebView pointer that is 0 until the native object has been 365 // created. 366 private int mNativeClass; 367 // This would be final but it needs to be set to null when the WebView is 368 // destroyed. 369 private WebViewCore mWebViewCore; 370 // Handler for dispatching UI messages. 371 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 372 private WebTextView mWebTextView; 373 // Used to ignore changes to webkit text that arrives to the UI side after 374 // more key events. 375 private int mTextGeneration; 376 377 /* package */ void incrementTextGeneration() { mTextGeneration++; } 378 379 // Used by WebViewCore to create child views. 380 /* package */ final ViewManager mViewManager; 381 382 // Used to display in full screen mode 383 PluginFullScreenHolder mFullScreenHolder; 384 385 /** 386 * Position of the last touch event. 387 */ 388 private float mLastTouchX; 389 private float mLastTouchY; 390 391 /** 392 * Time of the last touch event. 393 */ 394 private long mLastTouchTime; 395 396 /** 397 * Time of the last time sending touch event to WebViewCore 398 */ 399 private long mLastSentTouchTime; 400 401 /** 402 * The minimum elapsed time before sending another ACTION_MOVE event to 403 * WebViewCore. This really should be tuned for each type of the devices. 404 * For example in Google Map api test case, it takes Dream device at least 405 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 406 * triggering the layout and drawing the picture. While the same process 407 * takes 60+ms on the current high speed device. If we make 408 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 409 * to WebViewCore queue and the real layout and draw events will be pushed 410 * to further, which slows down the refresh rate. Choose 50 to favor the 411 * current high speed devices. For Dream like devices, 100 is a better 412 * choice. Maybe make this in the buildspec later. 413 */ 414 private static final int TOUCH_SENT_INTERVAL = 50; 415 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 416 417 /** 418 * Helper class to get velocity for fling 419 */ 420 VelocityTracker mVelocityTracker; 421 private int mMaximumFling; 422 private float mLastVelocity; 423 private float mLastVelX; 424 private float mLastVelY; 425 426 // A pointer to the native scrollable layer when dragging layers. Only 427 // valid when mTouchMode is TOUCH_DRAG_LAYER_MODE. 428 private int mScrollingLayer; 429 430 // only trigger accelerated fling if the new velocity is at least 431 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 432 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 433 434 /** 435 * Touch mode 436 */ 437 private int mTouchMode = TOUCH_DONE_MODE; 438 private static final int TOUCH_INIT_MODE = 1; 439 private static final int TOUCH_DRAG_START_MODE = 2; 440 private static final int TOUCH_DRAG_MODE = 3; 441 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 442 private static final int TOUCH_SHORTPRESS_MODE = 5; 443 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 444 private static final int TOUCH_DONE_MODE = 7; 445 private static final int TOUCH_PINCH_DRAG = 8; 446 private static final int TOUCH_DRAG_LAYER_MODE = 9; 447 448 // Whether to forward the touch events to WebCore 449 private boolean mForwardTouchEvents = false; 450 451 // Whether to prevent default during touch. The initial value depends on 452 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 453 // for touch down. Otherwise UI will wait for the answer of the first 454 // confirmed move before taking over the control. 455 private static final int PREVENT_DEFAULT_NO = 0; 456 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 457 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 458 private static final int PREVENT_DEFAULT_YES = 3; 459 private static final int PREVENT_DEFAULT_IGNORE = 4; 460 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 461 462 // true when the touch movement exceeds the slop 463 private boolean mConfirmMove; 464 465 // if true, touch events will be first processed by WebCore, if prevent 466 // default is not set, the UI will continue handle them. 467 private boolean mDeferTouchProcess; 468 469 // if true, multi-touch events will be passed to webkit directly before UI 470 private boolean mDeferMultitouch = false; 471 472 // to avoid interfering with the current touch events, track them 473 // separately. Currently no snapping or fling in the deferred process mode 474 private int mDeferTouchMode = TOUCH_DONE_MODE; 475 private float mLastDeferTouchX; 476 private float mLastDeferTouchY; 477 478 // To keep track of whether the current drag was initiated by a WebTextView, 479 // so that we know not to hide the cursor 480 boolean mDragFromTextInput; 481 482 // Whether or not to draw the cursor ring. 483 private boolean mDrawCursorRing = true; 484 485 // true if onPause has been called (and not onResume) 486 private boolean mIsPaused; 487 488 /** 489 * Customizable constant 490 */ 491 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 492 private int mTouchSlopSquare; 493 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 494 private int mDoubleTapSlopSquare; 495 // pre-computed density adjusted navigation slop 496 private int mNavSlop; 497 // This should be ViewConfiguration.getTapTimeout() 498 // But system time out is 100ms, which is too short for the browser. 499 // In the browser, if it switches out of tap too soon, jump tap won't work. 500 private static final int TAP_TIMEOUT = 200; 501 // This should be ViewConfiguration.getLongPressTimeout() 502 // But system time out is 500ms, which is too short for the browser. 503 // With a short timeout, it's difficult to treat trigger a short press. 504 private static final int LONG_PRESS_TIMEOUT = 1000; 505 // needed to avoid flinging after a pause of no movement 506 private static final int MIN_FLING_TIME = 250; 507 // draw unfiltered after drag is held without movement 508 private static final int MOTIONLESS_TIME = 100; 509 // The amount of content to overlap between two screens when going through 510 // pages with the space bar, in pixels. 511 private static final int PAGE_SCROLL_OVERLAP = 24; 512 513 /** 514 * These prevent calling requestLayout if either dimension is fixed. This 515 * depends on the layout parameters and the measure specs. 516 */ 517 boolean mWidthCanMeasure; 518 boolean mHeightCanMeasure; 519 520 // Remember the last dimensions we sent to the native side so we can avoid 521 // sending the same dimensions more than once. 522 int mLastWidthSent; 523 int mLastHeightSent; 524 525 private int mContentWidth; // cache of value from WebViewCore 526 private int mContentHeight; // cache of value from WebViewCore 527 528 // Need to have the separate control for horizontal and vertical scrollbar 529 // style than the View's single scrollbar style 530 private boolean mOverlayHorizontalScrollbar = true; 531 private boolean mOverlayVerticalScrollbar = false; 532 533 // our standard speed. this way small distances will be traversed in less 534 // time than large distances, but we cap the duration, so that very large 535 // distances won't take too long to get there. 536 private static final int STD_SPEED = 480; // pixels per second 537 // time for the longest scroll animation 538 private static final int MAX_DURATION = 750; // milliseconds 539 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 540 541 // Used by OverScrollGlow 542 OverScroller mScroller; 543 544 private boolean mInOverScrollMode = false; 545 private static Paint mOverScrollBackground; 546 private static Paint mOverScrollBorder; 547 548 private boolean mWrapContent; 549 private static final int MOTIONLESS_FALSE = 0; 550 private static final int MOTIONLESS_PENDING = 1; 551 private static final int MOTIONLESS_TRUE = 2; 552 private static final int MOTIONLESS_IGNORE = 3; 553 private int mHeldMotionless; 554 555 // An instance for injecting accessibility in WebViews with disabled 556 // JavaScript or ones for which no accessibility script exists 557 private AccessibilityInjector mAccessibilityInjector; 558 559 // flag indicating if accessibility script is injected so we 560 // know to handle Shift and arrows natively first 561 private boolean mAccessibilityScriptInjected; 562 563 // the color used to highlight the touch rectangles 564 private static final int mHightlightColor = 0x33000000; 565 // the round corner for the highlight path 566 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 567 // the region indicating where the user touched on the screen 568 private Region mTouchHighlightRegion = new Region(); 569 // the paint for the touch highlight 570 private Paint mTouchHightlightPaint; 571 // debug only 572 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 573 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 574 private Paint mTouchCrossHairColor; 575 private int mTouchHighlightX; 576 private int mTouchHighlightY; 577 578 /* 579 * Private message ids 580 */ 581 private static final int REMEMBER_PASSWORD = 1; 582 private static final int NEVER_REMEMBER_PASSWORD = 2; 583 private static final int SWITCH_TO_SHORTPRESS = 3; 584 private static final int SWITCH_TO_LONGPRESS = 4; 585 private static final int RELEASE_SINGLE_TAP = 5; 586 private static final int REQUEST_FORM_DATA = 6; 587 private static final int RESUME_WEBCORE_PRIORITY = 7; 588 private static final int DRAG_HELD_MOTIONLESS = 8; 589 private static final int AWAKEN_SCROLL_BARS = 9; 590 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 591 592 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 593 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 594 595 /* 596 * Package message ids 597 */ 598 //! arg1=x, arg2=y 599 static final int SCROLL_TO_MSG_ID = 101; 600 static final int SCROLL_BY_MSG_ID = 102; 601 //! arg1=x, arg2=y 602 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 603 //! arg1=x, arg2=y 604 static final int SYNC_SCROLL_TO_MSG_ID = 104; 605 static final int NEW_PICTURE_MSG_ID = 105; 606 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 607 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 608 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 609 static final int UPDATE_ZOOM_RANGE = 109; 610 static final int UNHANDLED_NAV_KEY = 110; 611 static final int CLEAR_TEXT_ENTRY = 111; 612 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 613 static final int SHOW_RECT_MSG_ID = 113; 614 static final int LONG_PRESS_CENTER = 114; 615 static final int PREVENT_TOUCH_ID = 115; 616 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 617 // obj=Rect in doc coordinates 618 static final int INVAL_RECT_MSG_ID = 117; 619 static final int REQUEST_KEYBOARD = 118; 620 static final int DO_MOTION_UP = 119; 621 static final int SHOW_FULLSCREEN = 120; 622 static final int HIDE_FULLSCREEN = 121; 623 static final int DOM_FOCUS_CHANGED = 122; 624 static final int REPLACE_BASE_CONTENT = 123; 625 static final int FORM_DID_BLUR = 124; 626 static final int RETURN_LABEL = 125; 627 static final int FIND_AGAIN = 126; 628 static final int CENTER_FIT_RECT = 127; 629 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 630 static final int SET_SCROLLBAR_MODES = 129; 631 static final int SELECTION_STRING_CHANGED = 130; 632 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 633 static final int SAVE_WEBARCHIVE_FINISHED = 132; 634 635 static final int SET_AUTOFILLABLE = 133; 636 637 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 638 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 639 640 static final String[] HandlerPrivateDebugString = { 641 "REMEMBER_PASSWORD", // = 1; 642 "NEVER_REMEMBER_PASSWORD", // = 2; 643 "SWITCH_TO_SHORTPRESS", // = 3; 644 "SWITCH_TO_LONGPRESS", // = 4; 645 "RELEASE_SINGLE_TAP", // = 5; 646 "REQUEST_FORM_DATA", // = 6; 647 "RESUME_WEBCORE_PRIORITY", // = 7; 648 "DRAG_HELD_MOTIONLESS", // = 8; 649 "AWAKEN_SCROLL_BARS", // = 9; 650 "PREVENT_DEFAULT_TIMEOUT" // = 10; 651 }; 652 653 static final String[] HandlerPackageDebugString = { 654 "SCROLL_TO_MSG_ID", // = 101; 655 "SCROLL_BY_MSG_ID", // = 102; 656 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 657 "SYNC_SCROLL_TO_MSG_ID", // = 104; 658 "NEW_PICTURE_MSG_ID", // = 105; 659 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 660 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 661 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 662 "UPDATE_ZOOM_RANGE", // = 109; 663 "UNHANDLED_NAV_KEY", // = 110; 664 "CLEAR_TEXT_ENTRY", // = 111; 665 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 666 "SHOW_RECT_MSG_ID", // = 113; 667 "LONG_PRESS_CENTER", // = 114; 668 "PREVENT_TOUCH_ID", // = 115; 669 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 670 "INVAL_RECT_MSG_ID", // = 117; 671 "REQUEST_KEYBOARD", // = 118; 672 "DO_MOTION_UP", // = 119; 673 "SHOW_FULLSCREEN", // = 120; 674 "HIDE_FULLSCREEN", // = 121; 675 "DOM_FOCUS_CHANGED", // = 122; 676 "REPLACE_BASE_CONTENT", // = 123; 677 "FORM_DID_BLUR", // = 124; 678 "RETURN_LABEL", // = 125; 679 "FIND_AGAIN", // = 126; 680 "CENTER_FIT_RECT", // = 127; 681 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 682 "SET_SCROLLBAR_MODES", // = 129; 683 "SELECTION_STRING_CHANGED", // = 130; 684 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 685 "SAVE_WEBARCHIVE_FINISHED", // = 132; 686 "SET_AUTOFILLABLE" // = 133; 687 }; 688 689 // If the site doesn't use the viewport meta tag to specify the viewport, 690 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 691 static final int DEFAULT_VIEWPORT_WIDTH = 980; 692 693 // normally we try to fit the content to the minimum preferred width 694 // calculated by the Webkit. To avoid the bad behavior when some site's 695 // minimum preferred width keeps growing when changing the viewport width or 696 // the minimum preferred width is huge, an upper limit is needed. 697 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 698 699 // initial scale in percent. 0 means using default. 700 private int mInitialScaleInPercent = 0; 701 702 private boolean mUserScroll = false; 703 704 private int mSnapScrollMode = SNAP_NONE; 705 private static final int SNAP_NONE = 0; 706 private static final int SNAP_LOCK = 1; // not a separate state 707 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 708 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 709 private boolean mSnapPositive; 710 711 // keep these in sync with their counterparts in WebView.cpp 712 private static final int DRAW_EXTRAS_NONE = 0; 713 private static final int DRAW_EXTRAS_FIND = 1; 714 private static final int DRAW_EXTRAS_SELECTION = 2; 715 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 716 717 // keep this in sync with WebCore:ScrollbarMode in WebKit 718 private static final int SCROLLBAR_AUTO = 0; 719 private static final int SCROLLBAR_ALWAYSOFF = 1; 720 // as we auto fade scrollbar, this is ignored. 721 private static final int SCROLLBAR_ALWAYSON = 2; 722 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 723 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 724 725 // constants for determining script injection strategy 726 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 727 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 728 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 729 730 // the alias via which accessibility JavaScript interface is exposed 731 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 732 733 // JavaScript to inject the script chooser which will 734 // pick the right script for the current URL 735 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 736 "javascript:(function() {" + 737 " var chooser = document.createElement('script');" + 738 " chooser.type = 'text/javascript';" + 739 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 740 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 741 " })();"; 742 743 // Regular expression that matches the "axs" URL parameter. 744 // The value of 0 means the accessibility script is opted out 745 // The value of 1 means the accessibility script is already injected 746 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 747 748 // variable to cache the above pattern in case accessibility is enabled. 749 private Pattern mMatchAxsUrlParameterPattern; 750 751 /** 752 * Max distance to overscroll by in pixels. 753 * This how far content can be pulled beyond its normal bounds by the user. 754 */ 755 private int mOverscrollDistance; 756 757 /** 758 * Max distance to overfling by in pixels. 759 * This is how far flinged content can move beyond the end of its normal bounds. 760 */ 761 private int mOverflingDistance; 762 763 private OverScrollGlow mOverScrollGlow; 764 765 // Used to match key downs and key ups 766 private boolean mGotKeyDown; 767 768 /* package */ static boolean mLogEvent = true; 769 770 // for event log 771 private long mLastTouchUpTime = 0; 772 773 private WebViewCore.AutoFillData mAutoFillData; 774 775 /** 776 * URI scheme for telephone number 777 */ 778 public static final String SCHEME_TEL = "tel:"; 779 /** 780 * URI scheme for email address 781 */ 782 public static final String SCHEME_MAILTO = "mailto:"; 783 /** 784 * URI scheme for map address 785 */ 786 public static final String SCHEME_GEO = "geo:0,0?q="; 787 788 private int mBackgroundColor = Color.WHITE; 789 790 // Used to notify listeners of a new picture. 791 private PictureListener mPictureListener; 792 /** 793 * Interface to listen for new pictures as they change. 794 */ 795 public interface PictureListener { 796 /** 797 * Notify the listener that the picture has changed. 798 * @param view The WebView that owns the picture. 799 * @param picture The new picture. 800 */ 801 public void onNewPicture(WebView view, Picture picture); 802 } 803 804 // FIXME: Want to make this public, but need to change the API file. 805 public /*static*/ class HitTestResult { 806 /** 807 * Default HitTestResult, where the target is unknown 808 */ 809 public static final int UNKNOWN_TYPE = 0; 810 /** 811 * HitTestResult for hitting a HTML::a tag 812 */ 813 public static final int ANCHOR_TYPE = 1; 814 /** 815 * HitTestResult for hitting a phone number 816 */ 817 public static final int PHONE_TYPE = 2; 818 /** 819 * HitTestResult for hitting a map address 820 */ 821 public static final int GEO_TYPE = 3; 822 /** 823 * HitTestResult for hitting an email address 824 */ 825 public static final int EMAIL_TYPE = 4; 826 /** 827 * HitTestResult for hitting an HTML::img tag 828 */ 829 public static final int IMAGE_TYPE = 5; 830 /** 831 * HitTestResult for hitting a HTML::a tag which contains HTML::img 832 */ 833 public static final int IMAGE_ANCHOR_TYPE = 6; 834 /** 835 * HitTestResult for hitting a HTML::a tag with src=http 836 */ 837 public static final int SRC_ANCHOR_TYPE = 7; 838 /** 839 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 840 */ 841 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 842 /** 843 * HitTestResult for hitting an edit text area 844 */ 845 public static final int EDIT_TEXT_TYPE = 9; 846 847 private int mType; 848 private String mExtra; 849 850 HitTestResult() { 851 mType = UNKNOWN_TYPE; 852 } 853 854 private void setType(int type) { 855 mType = type; 856 } 857 858 private void setExtra(String extra) { 859 mExtra = extra; 860 } 861 862 public int getType() { 863 return mType; 864 } 865 866 public String getExtra() { 867 return mExtra; 868 } 869 } 870 871 /** 872 * Construct a new WebView with a Context object. 873 * @param context A Context object used to access application assets. 874 */ 875 public WebView(Context context) { 876 this(context, null); 877 } 878 879 /** 880 * Construct a new WebView with layout parameters. 881 * @param context A Context object used to access application assets. 882 * @param attrs An AttributeSet passed to our parent. 883 */ 884 public WebView(Context context, AttributeSet attrs) { 885 this(context, attrs, com.android.internal.R.attr.webViewStyle); 886 } 887 888 /** 889 * Construct a new WebView with layout parameters and a default style. 890 * @param context A Context object used to access application assets. 891 * @param attrs An AttributeSet passed to our parent. 892 * @param defStyle The default style resource ID. 893 */ 894 public WebView(Context context, AttributeSet attrs, int defStyle) { 895 this(context, attrs, defStyle, false); 896 } 897 898 /** 899 * Construct a new WebView with layout parameters and a default style. 900 * @param context A Context object used to access application assets. 901 * @param attrs An AttributeSet passed to our parent. 902 * @param defStyle The default style resource ID. 903 */ 904 public WebView(Context context, AttributeSet attrs, int defStyle, 905 boolean privateBrowsing) { 906 this(context, attrs, defStyle, null, privateBrowsing); 907 } 908 909 /** 910 * Construct a new WebView with layout parameters, a default style and a set 911 * of custom Javscript interfaces to be added to the WebView at initialization 912 * time. This guarantees that these interfaces will be available when the JS 913 * context is initialized. 914 * @param context A Context object used to access application assets. 915 * @param attrs An AttributeSet passed to our parent. 916 * @param defStyle The default style resource ID. 917 * @param javascriptInterfaces is a Map of interface names, as keys, and 918 * object implementing those interfaces, as values. 919 * @hide pending API council approval. 920 */ 921 protected WebView(Context context, AttributeSet attrs, int defStyle, 922 Map<String, Object> javascriptInterfaces, boolean privateBrowsing) { 923 super(context, attrs, defStyle); 924 925 // Used by the chrome stack to find application paths 926 JniUtil.setContext(context); 927 928 if (AccessibilityManager.getInstance(context).isEnabled()) { 929 if (javascriptInterfaces == null) { 930 javascriptInterfaces = new HashMap<String, Object>(); 931 } 932 exposeAccessibilityJavaScriptApi(javascriptInterfaces); 933 } 934 935 mCallbackProxy = new CallbackProxy(context, this); 936 mViewManager = new ViewManager(this); 937 L10nUtils.loadStrings(context); 938 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 939 mDatabase = WebViewDatabase.getInstance(context); 940 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 941 mZoomManager = new ZoomManager(this, mCallbackProxy); 942 943 /* The init method must follow the creation of certain member variables, 944 * such as the mZoomManager. 945 */ 946 init(); 947 setupPackageListener(context); 948 updateMultiTouchSupport(context); 949 950 if (privateBrowsing) { 951 startPrivateBrowsing(); 952 } 953 954 mAutoFillData = new WebViewCore.AutoFillData(); 955 } 956 957 /* 958 * The intent receiver that monitors for changes to relevant packages (e.g., 959 * sGoogleApps) and notifies WebViewCore of their existence. 960 */ 961 private static BroadcastReceiver sPackageInstallationReceiver = null; 962 963 /* 964 * A set of Google packages we monitor for the 965 * navigator.isApplicationInstalled() API. Add additional packages as 966 * needed. 967 */ 968 private static Set<String> sGoogleApps; 969 static { 970 sGoogleApps = new HashSet<String>(); 971 sGoogleApps.add("com.google.android.youtube"); 972 } 973 974 private void setupPackageListener(Context context) { 975 976 /* 977 * we must synchronize the instance check and the creation of the 978 * receiver to ensure that only ONE receiver exists for all WebView 979 * instances. 980 */ 981 synchronized (WebView.class) { 982 983 // if the receiver already exists then we do not need to register it 984 // again 985 if (sPackageInstallationReceiver != null) { 986 return; 987 } 988 989 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 990 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 991 filter.addDataScheme("package"); 992 sPackageInstallationReceiver = new BroadcastReceiver() { 993 994 @Override 995 public void onReceive(Context context, Intent intent) { 996 final String action = intent.getAction(); 997 final String packageName = intent.getData().getSchemeSpecificPart(); 998 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 999 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1000 // if it is replacing, refreshPlugins() when adding 1001 return; 1002 } 1003 1004 if (sGoogleApps.contains(packageName) && mWebViewCore != null) { 1005 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1006 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1007 } else { 1008 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1009 } 1010 } 1011 1012 PluginManager pm = PluginManager.getInstance(context); 1013 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1014 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1015 } 1016 } 1017 }; 1018 1019 context.getApplicationContext().registerReceiver(sPackageInstallationReceiver, filter); 1020 } 1021 1022 // check if any of the monitored apps are already installed 1023 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1024 1025 @Override 1026 protected Set<String> doInBackground(Void... unused) { 1027 Set<String> installedPackages = new HashSet<String>(); 1028 PackageManager pm = mContext.getPackageManager(); 1029 List<PackageInfo> packages = pm.getInstalledPackages(0); 1030 for (PackageInfo p : packages) { 1031 if (sGoogleApps.contains(p.packageName)) { 1032 installedPackages.add(p.packageName); 1033 } 1034 } 1035 return installedPackages; 1036 } 1037 1038 // Executes on the UI thread 1039 @Override 1040 protected void onPostExecute(Set<String> installedPackages) { 1041 if (mWebViewCore != null) { 1042 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1043 } 1044 } 1045 }; 1046 task.execute(); 1047 } 1048 1049 void updateMultiTouchSupport(Context context) { 1050 mZoomManager.updateMultiTouchSupport(context); 1051 } 1052 1053 private void init() { 1054 setWillNotDraw(false); 1055 setFocusable(true); 1056 setFocusableInTouchMode(true); 1057 setClickable(true); 1058 setLongClickable(true); 1059 1060 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1061 int slop = configuration.getScaledTouchSlop(); 1062 mTouchSlopSquare = slop * slop; 1063 mMinLockSnapReverseDistance = slop; 1064 slop = configuration.getScaledDoubleTapSlop(); 1065 mDoubleTapSlopSquare = slop * slop; 1066 final float density = getContext().getResources().getDisplayMetrics().density; 1067 // use one line height, 16 based on our current default font, for how 1068 // far we allow a touch be away from the edge of a link 1069 mNavSlop = (int) (16 * density); 1070 mZoomManager.init(density); 1071 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1072 1073 // Compute the inverse of the density squared. 1074 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1075 1076 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1077 mOverflingDistance = configuration.getScaledOverflingDistance(); 1078 } 1079 1080 /** 1081 * Exposes accessibility APIs to JavaScript by appending them to the JavaScript 1082 * interfaces map provided by the WebView client. In case of conflicting 1083 * alias with the one of the accessibility API the user specified one wins. 1084 * 1085 * @param javascriptInterfaces A map with interfaces to be exposed to JavaScript. 1086 */ 1087 private void exposeAccessibilityJavaScriptApi(Map<String, Object> javascriptInterfaces) { 1088 if (javascriptInterfaces.containsKey(ALIAS_ACCESSIBILITY_JS_INTERFACE)) { 1089 Log.w(LOGTAG, "JavaScript interface mapped to \"" + ALIAS_ACCESSIBILITY_JS_INTERFACE 1090 + "\" overrides the accessibility API JavaScript interface. No accessibility" 1091 + "API will be exposed to JavaScript!"); 1092 return; 1093 } 1094 1095 // expose the TTS for now ... 1096 javascriptInterfaces.put(ALIAS_ACCESSIBILITY_JS_INTERFACE, 1097 new TextToSpeech(getContext(), null)); 1098 } 1099 1100 @Override 1101 public void setOverScrollMode(int mode) { 1102 super.setOverScrollMode(mode); 1103 if (mode != OVER_SCROLL_NEVER) { 1104 if (mOverScrollGlow == null) { 1105 mOverScrollGlow = new OverScrollGlow(this); 1106 } 1107 } else { 1108 mOverScrollGlow = null; 1109 } 1110 } 1111 1112 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1113 final float density = mContext.getResources().getDisplayMetrics().density 1114 * 100 / zoomDensity; 1115 mNavSlop = (int) (16 * density); 1116 mZoomManager.updateDefaultZoomDensity(density); 1117 } 1118 1119 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1120 String password, final Message resumeMsg) { 1121 boolean rVal = false; 1122 if (resumeMsg == null) { 1123 // null resumeMsg implies saving password silently 1124 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1125 } else { 1126 final Message remember = mPrivateHandler.obtainMessage( 1127 REMEMBER_PASSWORD); 1128 remember.getData().putString("host", schemePlusHost); 1129 remember.getData().putString("username", username); 1130 remember.getData().putString("password", password); 1131 remember.obj = resumeMsg; 1132 1133 final Message neverRemember = mPrivateHandler.obtainMessage( 1134 NEVER_REMEMBER_PASSWORD); 1135 neverRemember.getData().putString("host", schemePlusHost); 1136 neverRemember.getData().putString("username", username); 1137 neverRemember.getData().putString("password", password); 1138 neverRemember.obj = resumeMsg; 1139 1140 new AlertDialog.Builder(getContext()) 1141 .setTitle(com.android.internal.R.string.save_password_label) 1142 .setMessage(com.android.internal.R.string.save_password_message) 1143 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1144 new DialogInterface.OnClickListener() { 1145 public void onClick(DialogInterface dialog, int which) { 1146 resumeMsg.sendToTarget(); 1147 } 1148 }) 1149 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1150 new DialogInterface.OnClickListener() { 1151 public void onClick(DialogInterface dialog, int which) { 1152 remember.sendToTarget(); 1153 } 1154 }) 1155 .setNegativeButton(com.android.internal.R.string.save_password_never, 1156 new DialogInterface.OnClickListener() { 1157 public void onClick(DialogInterface dialog, int which) { 1158 neverRemember.sendToTarget(); 1159 } 1160 }) 1161 .setOnCancelListener(new OnCancelListener() { 1162 public void onCancel(DialogInterface dialog) { 1163 resumeMsg.sendToTarget(); 1164 } 1165 }).show(); 1166 // Return true so that WebViewCore will pause while the dialog is 1167 // up. 1168 rVal = true; 1169 } 1170 return rVal; 1171 } 1172 1173 @Override 1174 public void setScrollBarStyle(int style) { 1175 if (style == View.SCROLLBARS_INSIDE_INSET 1176 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1177 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1178 } else { 1179 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1180 } 1181 super.setScrollBarStyle(style); 1182 } 1183 1184 /** 1185 * Specify whether the horizontal scrollbar has overlay style. 1186 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1187 */ 1188 public void setHorizontalScrollbarOverlay(boolean overlay) { 1189 mOverlayHorizontalScrollbar = overlay; 1190 } 1191 1192 /** 1193 * Specify whether the vertical scrollbar has overlay style. 1194 * @param overlay TRUE if vertical scrollbar should have overlay style. 1195 */ 1196 public void setVerticalScrollbarOverlay(boolean overlay) { 1197 mOverlayVerticalScrollbar = overlay; 1198 } 1199 1200 /** 1201 * Return whether horizontal scrollbar has overlay style 1202 * @return TRUE if horizontal scrollbar has overlay style. 1203 */ 1204 public boolean overlayHorizontalScrollbar() { 1205 return mOverlayHorizontalScrollbar; 1206 } 1207 1208 /** 1209 * Return whether vertical scrollbar has overlay style 1210 * @return TRUE if vertical scrollbar has overlay style. 1211 */ 1212 public boolean overlayVerticalScrollbar() { 1213 return mOverlayVerticalScrollbar; 1214 } 1215 1216 /* 1217 * Return the width of the view where the content of WebView should render 1218 * to. 1219 * Note: this can be called from WebCoreThread. 1220 */ 1221 /* package */ int getViewWidth() { 1222 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1223 return getWidth(); 1224 } else { 1225 return getWidth() - getVerticalScrollbarWidth(); 1226 } 1227 } 1228 1229 /* 1230 * returns the height of the titlebarview (if any). Does not care about 1231 * scrolling 1232 */ 1233 int getTitleHeight() { 1234 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1235 } 1236 1237 /* 1238 * Return the amount of the titlebarview (if any) that is visible 1239 * 1240 * @hide 1241 */ 1242 public int getVisibleTitleHeight() { 1243 // need to restrict mScrollY due to over scroll 1244 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1245 } 1246 1247 /* 1248 * Return the height of the view where the content of WebView should render 1249 * to. Note that this excludes mTitleBar, if there is one. 1250 * Note: this can be called from WebCoreThread. 1251 */ 1252 /* package */ int getViewHeight() { 1253 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1254 } 1255 1256 private int getViewHeightWithTitle() { 1257 int height = getHeight(); 1258 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1259 height -= getHorizontalScrollbarHeight(); 1260 } 1261 return height; 1262 } 1263 1264 /** 1265 * @return The SSL certificate for the main top-level page or null if 1266 * there is no certificate (the site is not secure). 1267 */ 1268 public SslCertificate getCertificate() { 1269 return mCertificate; 1270 } 1271 1272 /** 1273 * Sets the SSL certificate for the main top-level page. 1274 */ 1275 public void setCertificate(SslCertificate certificate) { 1276 if (DebugFlags.WEB_VIEW) { 1277 Log.v(LOGTAG, "setCertificate=" + certificate); 1278 } 1279 // here, the certificate can be null (if the site is not secure) 1280 mCertificate = certificate; 1281 } 1282 1283 //------------------------------------------------------------------------- 1284 // Methods called by activity 1285 //------------------------------------------------------------------------- 1286 1287 /** 1288 * Save the username and password for a particular host in the WebView's 1289 * internal database. 1290 * @param host The host that required the credentials. 1291 * @param username The username for the given host. 1292 * @param password The password for the given host. 1293 */ 1294 public void savePassword(String host, String username, String password) { 1295 mDatabase.setUsernamePassword(host, username, password); 1296 } 1297 1298 /** 1299 * Set the HTTP authentication credentials for a given host and realm. 1300 * 1301 * @param host The host for the credentials. 1302 * @param realm The realm for the credentials. 1303 * @param username The username for the password. If it is null, it means 1304 * password can't be saved. 1305 * @param password The password 1306 */ 1307 public void setHttpAuthUsernamePassword(String host, String realm, 1308 String username, String password) { 1309 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1310 } 1311 1312 /** 1313 * Retrieve the HTTP authentication username and password for a given 1314 * host & realm pair 1315 * 1316 * @param host The host for which the credentials apply. 1317 * @param realm The realm for which the credentials apply. 1318 * @return String[] if found, String[0] is username, which can be null and 1319 * String[1] is password. Return null if it can't find anything. 1320 */ 1321 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1322 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1323 } 1324 1325 /** 1326 * Remove Find or Select ActionModes, if active. 1327 */ 1328 private void clearActionModes() { 1329 if (mSelectCallback != null) { 1330 mSelectCallback.finish(); 1331 } 1332 if (mFindCallback != null) { 1333 mFindCallback.finish(); 1334 } 1335 } 1336 1337 /** 1338 * Called to clear state when moving from one page to another, or changing 1339 * in some other way that makes elements associated with the current page 1340 * (such as WebTextView or ActionModes) no longer relevant. 1341 */ 1342 private void clearHelpers() { 1343 clearTextEntry(); 1344 clearActionModes(); 1345 dismissFullScreenMode(); 1346 } 1347 1348 /** 1349 * Destroy the internal state of the WebView. This method should be called 1350 * after the WebView has been removed from the view system. No other 1351 * methods may be called on a WebView after destroy. 1352 */ 1353 public void destroy() { 1354 clearHelpers(); 1355 if (mListBoxDialog != null) { 1356 mListBoxDialog.dismiss(); 1357 mListBoxDialog = null; 1358 } 1359 if (mWebViewCore != null) { 1360 // Set the handlers to null before destroying WebViewCore so no 1361 // more messages will be posted. 1362 mCallbackProxy.setWebViewClient(null); 1363 mCallbackProxy.setWebChromeClient(null); 1364 // Tell WebViewCore to destroy itself 1365 synchronized (this) { 1366 WebViewCore webViewCore = mWebViewCore; 1367 mWebViewCore = null; // prevent using partial webViewCore 1368 webViewCore.destroy(); 1369 } 1370 // Remove any pending messages that might not be serviced yet. 1371 mPrivateHandler.removeCallbacksAndMessages(null); 1372 mCallbackProxy.removeCallbacksAndMessages(null); 1373 // Wake up the WebCore thread just in case it is waiting for a 1374 // javascript dialog. 1375 synchronized (mCallbackProxy) { 1376 mCallbackProxy.notify(); 1377 } 1378 } 1379 if (mNativeClass != 0) { 1380 nativeDestroy(); 1381 mNativeClass = 0; 1382 } 1383 } 1384 1385 /** 1386 * Enables platform notifications of data state and proxy changes. 1387 */ 1388 public static void enablePlatformNotifications() { 1389 Network.enablePlatformNotifications(); 1390 } 1391 1392 /** 1393 * If platform notifications are enabled, this should be called 1394 * from the Activity's onPause() or onStop(). 1395 */ 1396 public static void disablePlatformNotifications() { 1397 Network.disablePlatformNotifications(); 1398 } 1399 1400 /** 1401 * Sets JavaScript engine flags. 1402 * 1403 * @param flags JS engine flags in a String 1404 * 1405 * @hide pending API solidification 1406 */ 1407 public void setJsFlags(String flags) { 1408 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1409 } 1410 1411 /** 1412 * Inform WebView of the network state. This is used to set 1413 * the javascript property window.navigator.isOnline and 1414 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1415 * @param networkUp boolean indicating if network is available 1416 */ 1417 public void setNetworkAvailable(boolean networkUp) { 1418 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1419 networkUp ? 1 : 0, 0); 1420 } 1421 1422 /** 1423 * Inform WebView about the current network type. 1424 * {@hide} 1425 */ 1426 public void setNetworkType(String type, String subtype) { 1427 Map<String, String> map = new HashMap<String, String>(); 1428 map.put("type", type); 1429 map.put("subtype", subtype); 1430 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1431 } 1432 /** 1433 * Save the state of this WebView used in 1434 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1435 * method no longer stores the display data for this WebView. The previous 1436 * behavior could potentially leak files if {@link #restoreState} was never 1437 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1438 * and restoring the display data. 1439 * @param outState The Bundle to store the WebView state. 1440 * @return The same copy of the back/forward list used to save the state. If 1441 * saveState fails, the returned list will be null. 1442 * @see #savePicture 1443 * @see #restorePicture 1444 */ 1445 public WebBackForwardList saveState(Bundle outState) { 1446 if (outState == null) { 1447 return null; 1448 } 1449 // We grab a copy of the back/forward list because a client of WebView 1450 // may have invalidated the history list by calling clearHistory. 1451 WebBackForwardList list = copyBackForwardList(); 1452 final int currentIndex = list.getCurrentIndex(); 1453 final int size = list.getSize(); 1454 // We should fail saving the state if the list is empty or the index is 1455 // not in a valid range. 1456 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1457 return null; 1458 } 1459 outState.putInt("index", currentIndex); 1460 // FIXME: This should just be a byte[][] instead of ArrayList but 1461 // Parcel.java does not have the code to handle multi-dimensional 1462 // arrays. 1463 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1464 for (int i = 0; i < size; i++) { 1465 WebHistoryItem item = list.getItemAtIndex(i); 1466 if (null == item) { 1467 // FIXME: this shouldn't happen 1468 // need to determine how item got set to null 1469 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1470 return null; 1471 } 1472 byte[] data = item.getFlattenedData(); 1473 if (data == null) { 1474 // It would be very odd to not have any data for a given history 1475 // item. And we will fail to rebuild the history list without 1476 // flattened data. 1477 return null; 1478 } 1479 history.add(data); 1480 } 1481 outState.putSerializable("history", history); 1482 if (mCertificate != null) { 1483 outState.putBundle("certificate", 1484 SslCertificate.saveState(mCertificate)); 1485 } 1486 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1487 mZoomManager.saveZoomState(outState); 1488 return list; 1489 } 1490 1491 /** 1492 * Save the current display data to the Bundle given. Used in conjunction 1493 * with {@link #saveState}. 1494 * @param b A Bundle to store the display data. 1495 * @param dest The file to store the serialized picture data. Will be 1496 * overwritten with this WebView's picture data. 1497 * @return True if the picture was successfully saved. 1498 */ 1499 public boolean savePicture(Bundle b, final File dest) { 1500 if (dest == null || b == null) { 1501 return false; 1502 } 1503 final Picture p = capturePicture(); 1504 // Use a temporary file while writing to ensure the destination file 1505 // contains valid data. 1506 final File temp = new File(dest.getPath() + ".writing"); 1507 new Thread(new Runnable() { 1508 public void run() { 1509 FileOutputStream out = null; 1510 try { 1511 out = new FileOutputStream(temp); 1512 p.writeToStream(out); 1513 // Writing the picture succeeded, rename the temporary file 1514 // to the destination. 1515 temp.renameTo(dest); 1516 } catch (Exception e) { 1517 // too late to do anything about it. 1518 } finally { 1519 if (out != null) { 1520 try { 1521 out.close(); 1522 } catch (Exception e) { 1523 // Can't do anything about that 1524 } 1525 } 1526 temp.delete(); 1527 } 1528 } 1529 }).start(); 1530 // now update the bundle 1531 b.putInt("scrollX", mScrollX); 1532 b.putInt("scrollY", mScrollY); 1533 mZoomManager.saveZoomState(b); 1534 return true; 1535 } 1536 1537 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1538 int sx = b.getInt("scrollX", 0); 1539 int sy = b.getInt("scrollY", 0); 1540 1541 mDrawHistory = true; 1542 mHistoryPicture = p; 1543 mScrollX = sx; 1544 mScrollY = sy; 1545 mZoomManager.restoreZoomState(b); 1546 final float scale = mZoomManager.getScale(); 1547 mHistoryWidth = Math.round(p.getWidth() * scale); 1548 mHistoryHeight = Math.round(p.getHeight() * scale); 1549 1550 invalidate(); 1551 } 1552 1553 /** 1554 * Restore the display data that was save in {@link #savePicture}. Used in 1555 * conjunction with {@link #restoreState}. 1556 * @param b A Bundle containing the saved display data. 1557 * @param src The file where the picture data was stored. 1558 * @return True if the picture was successfully restored. 1559 */ 1560 public boolean restorePicture(Bundle b, File src) { 1561 if (src == null || b == null) { 1562 return false; 1563 } 1564 if (!src.exists()) { 1565 return false; 1566 } 1567 try { 1568 final FileInputStream in = new FileInputStream(src); 1569 final Bundle copy = new Bundle(b); 1570 new Thread(new Runnable() { 1571 public void run() { 1572 try { 1573 final Picture p = Picture.createFromStream(in); 1574 if (p != null) { 1575 // Post a runnable on the main thread to update the 1576 // history picture fields. 1577 mPrivateHandler.post(new Runnable() { 1578 public void run() { 1579 restoreHistoryPictureFields(p, copy); 1580 } 1581 }); 1582 } 1583 } finally { 1584 try { 1585 in.close(); 1586 } catch (Exception e) { 1587 // Nothing we can do now. 1588 } 1589 } 1590 } 1591 }).start(); 1592 } catch (FileNotFoundException e){ 1593 e.printStackTrace(); 1594 } 1595 return true; 1596 } 1597 1598 /** 1599 * Restore the state of this WebView from the given map used in 1600 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1601 * be called to restore the state of the WebView before using the object. If 1602 * it is called after the WebView has had a chance to build state (load 1603 * pages, create a back/forward list, etc.) there may be undesirable 1604 * side-effects. Please note that this method no longer restores the 1605 * display data for this WebView. See {@link #savePicture} and {@link 1606 * #restorePicture} for saving and restoring the display data. 1607 * @param inState The incoming Bundle of state. 1608 * @return The restored back/forward list or null if restoreState failed. 1609 * @see #savePicture 1610 * @see #restorePicture 1611 */ 1612 public WebBackForwardList restoreState(Bundle inState) { 1613 WebBackForwardList returnList = null; 1614 if (inState == null) { 1615 return returnList; 1616 } 1617 if (inState.containsKey("index") && inState.containsKey("history")) { 1618 mCertificate = SslCertificate.restoreState( 1619 inState.getBundle("certificate")); 1620 1621 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1622 final int index = inState.getInt("index"); 1623 // We can't use a clone of the list because we need to modify the 1624 // shared copy, so synchronize instead to prevent concurrent 1625 // modifications. 1626 synchronized (list) { 1627 final List<byte[]> history = 1628 (List<byte[]>) inState.getSerializable("history"); 1629 final int size = history.size(); 1630 // Check the index bounds so we don't crash in native code while 1631 // restoring the history index. 1632 if (index < 0 || index >= size) { 1633 return null; 1634 } 1635 for (int i = 0; i < size; i++) { 1636 byte[] data = history.remove(0); 1637 if (data == null) { 1638 // If we somehow have null data, we cannot reconstruct 1639 // the item and thus our history list cannot be rebuilt. 1640 return null; 1641 } 1642 WebHistoryItem item = new WebHistoryItem(data); 1643 list.addHistoryItem(item); 1644 } 1645 // Grab the most recent copy to return to the caller. 1646 returnList = copyBackForwardList(); 1647 // Update the copy to have the correct index. 1648 returnList.setCurrentIndex(index); 1649 } 1650 // Restore private browsing setting. 1651 if (inState.getBoolean("privateBrowsingEnabled")) { 1652 getSettings().setPrivateBrowsingEnabled(true); 1653 } 1654 mZoomManager.restoreZoomState(inState); 1655 // Remove all pending messages because we are restoring previous 1656 // state. 1657 mWebViewCore.removeMessages(); 1658 // Send a restore state message. 1659 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1660 } 1661 return returnList; 1662 } 1663 1664 /** 1665 * Load the given url with the extra headers. 1666 * @param url The url of the resource to load. 1667 * @param extraHeaders The extra headers sent with this url. This should not 1668 * include the common headers like "user-agent". If it does, it 1669 * will be replaced by the intrinsic value of the WebView. 1670 */ 1671 public void loadUrl(String url, Map<String, String> extraHeaders) { 1672 switchOutDrawHistory(); 1673 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1674 arg.mUrl = url; 1675 arg.mExtraHeaders = extraHeaders; 1676 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1677 clearHelpers(); 1678 } 1679 1680 /** 1681 * Load the given url. 1682 * @param url The url of the resource to load. 1683 */ 1684 public void loadUrl(String url) { 1685 if (url == null) { 1686 return; 1687 } 1688 loadUrl(url, null); 1689 } 1690 1691 /** 1692 * Load the url with postData using "POST" method into the WebView. If url 1693 * is not a network url, it will be loaded with {link 1694 * {@link #loadUrl(String)} instead. 1695 * 1696 * @param url The url of the resource to load. 1697 * @param postData The data will be passed to "POST" request. 1698 */ 1699 public void postUrl(String url, byte[] postData) { 1700 if (URLUtil.isNetworkUrl(url)) { 1701 switchOutDrawHistory(); 1702 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1703 arg.mUrl = url; 1704 arg.mPostData = postData; 1705 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1706 clearHelpers(); 1707 } else { 1708 loadUrl(url); 1709 } 1710 } 1711 1712 /** 1713 * Load the given data into the WebView. This will load the data into 1714 * WebView using the data: scheme. Content loaded through this mechanism 1715 * does not have the ability to load content from the network. 1716 * @param data A String of data in the given encoding. The date must 1717 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1718 * %27, %3f respectively. 1719 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1720 * @param encoding The encoding of the data. i.e. utf-8, base64 1721 */ 1722 public void loadData(String data, String mimeType, String encoding) { 1723 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1724 } 1725 1726 /** 1727 * Load the given data into the WebView, use the provided URL as the base 1728 * URL for the content. The base URL is the URL that represents the page 1729 * that is loaded through this interface. As such, it is used to resolve any 1730 * relative URLs. The historyUrl is used for the history entry. 1731 * <p> 1732 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1733 * files through "file:///android_asset/" for the sub resources is more 1734 * restricted. If you provide null or empty string as baseUrl, you won't be 1735 * able to access asset files. If the baseUrl is anything other than 1736 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1737 * sub resources. 1738 * 1739 * @param baseUrl Url to resolve relative paths with, if null defaults to 1740 * "about:blank" 1741 * @param data A String of data in the given encoding. 1742 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1743 * defaults to "text/html" 1744 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1745 * @param historyUrl URL to use as the history entry. Can be null. 1746 */ 1747 public void loadDataWithBaseURL(String baseUrl, String data, 1748 String mimeType, String encoding, String historyUrl) { 1749 1750 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1751 loadData(data, mimeType, encoding); 1752 return; 1753 } 1754 switchOutDrawHistory(); 1755 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1756 arg.mBaseUrl = baseUrl; 1757 arg.mData = data; 1758 arg.mMimeType = mimeType; 1759 arg.mEncoding = encoding; 1760 arg.mHistoryUrl = historyUrl; 1761 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1762 clearHelpers(); 1763 } 1764 1765 /** 1766 * Saves the current view as a web archive. 1767 * 1768 * @param filename The filename where the archive should be placed. 1769 */ 1770 public void saveWebArchive(String filename) { 1771 saveWebArchive(filename, false, null); 1772 } 1773 1774 /* package */ static class SaveWebArchiveMessage { 1775 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1776 mBasename = basename; 1777 mAutoname = autoname; 1778 mCallback = callback; 1779 } 1780 1781 /* package */ final String mBasename; 1782 /* package */ final boolean mAutoname; 1783 /* package */ final ValueCallback<String> mCallback; 1784 /* package */ String mResultFile; 1785 } 1786 1787 /** 1788 * Saves the current view as a web archive. 1789 * 1790 * @param basename The filename where the archive should be placed. 1791 * @param autoname If false, takes basename to be a file. If true, basename 1792 * is assumed to be a directory in which a filename will be 1793 * chosen according to the url of the current page. 1794 * @param callback Called after the web archive has been saved. The 1795 * parameter for onReceiveValue will either be the filename 1796 * under which the file was saved, or null if saving the 1797 * file failed. 1798 */ 1799 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1800 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1801 new SaveWebArchiveMessage(basename, autoname, callback)); 1802 } 1803 1804 /** 1805 * Stop the current load. 1806 */ 1807 public void stopLoading() { 1808 // TODO: should we clear all the messages in the queue before sending 1809 // STOP_LOADING? 1810 switchOutDrawHistory(); 1811 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1812 } 1813 1814 /** 1815 * Reload the current url. 1816 */ 1817 public void reload() { 1818 clearHelpers(); 1819 switchOutDrawHistory(); 1820 mWebViewCore.sendMessage(EventHub.RELOAD); 1821 } 1822 1823 /** 1824 * Return true if this WebView has a back history item. 1825 * @return True iff this WebView has a back history item. 1826 */ 1827 public boolean canGoBack() { 1828 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1829 synchronized (l) { 1830 if (l.getClearPending()) { 1831 return false; 1832 } else { 1833 return l.getCurrentIndex() > 0; 1834 } 1835 } 1836 } 1837 1838 /** 1839 * Go back in the history of this WebView. 1840 */ 1841 public void goBack() { 1842 goBackOrForward(-1); 1843 } 1844 1845 /** 1846 * Return true if this WebView has a forward history item. 1847 * @return True iff this Webview has a forward history item. 1848 */ 1849 public boolean canGoForward() { 1850 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1851 synchronized (l) { 1852 if (l.getClearPending()) { 1853 return false; 1854 } else { 1855 return l.getCurrentIndex() < l.getSize() - 1; 1856 } 1857 } 1858 } 1859 1860 /** 1861 * Go forward in the history of this WebView. 1862 */ 1863 public void goForward() { 1864 goBackOrForward(1); 1865 } 1866 1867 /** 1868 * Return true if the page can go back or forward the given 1869 * number of steps. 1870 * @param steps The negative or positive number of steps to move the 1871 * history. 1872 */ 1873 public boolean canGoBackOrForward(int steps) { 1874 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1875 synchronized (l) { 1876 if (l.getClearPending()) { 1877 return false; 1878 } else { 1879 int newIndex = l.getCurrentIndex() + steps; 1880 return newIndex >= 0 && newIndex < l.getSize(); 1881 } 1882 } 1883 } 1884 1885 /** 1886 * Go to the history item that is the number of steps away from 1887 * the current item. Steps is negative if backward and positive 1888 * if forward. 1889 * @param steps The number of steps to take back or forward in the back 1890 * forward list. 1891 */ 1892 public void goBackOrForward(int steps) { 1893 goBackOrForward(steps, false); 1894 } 1895 1896 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1897 if (steps != 0) { 1898 clearHelpers(); 1899 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1900 ignoreSnapshot ? 1 : 0); 1901 } 1902 } 1903 1904 /** 1905 * Returns true if private browsing is enabled in this WebView. 1906 */ 1907 public boolean isPrivateBrowsingEnabled() { 1908 return getSettings().isPrivateBrowsingEnabled(); 1909 } 1910 1911 private void startPrivateBrowsing() { 1912 boolean wasPrivateBrowsingEnabled = isPrivateBrowsingEnabled(); 1913 1914 getSettings().setPrivateBrowsingEnabled(true); 1915 1916 if (!wasPrivateBrowsingEnabled) { 1917 loadUrl("browser:incognito"); 1918 } 1919 } 1920 1921 /** 1922 * Deletes any files that were created as a part of the last private 1923 * browsing session and clears any internal state associated with that 1924 * session. The consequences of calling this method while a private 1925 * browsing session is active are unspecified. 1926 * @param context The same context which was used to create the private 1927 * browsing WebView. 1928 * @return True if the private browsing files were successfully deleted, 1929 * false otherwise. 1930 * @hide pending API council approval. 1931 */ 1932 public static boolean cleanupPrivateBrowsingFiles(Context context) { 1933 // It seems wrong that we have to pass the storage locations here, given 1934 // that the storage files are created native-side in WebRequestContext 1935 // (albeit using a dumb getter on BrowserFrame to get the paths from 1936 // Java). It looks like this is required because we may need to call 1937 // this method before the BrowserFrame has been set up. 1938 // TODO: Investigate whether this can be avoided. 1939 return nativeCleanupPrivateBrowsingFiles(context.getDatabasePath("dummy").getParent(), 1940 context.getCacheDir().getAbsolutePath()); 1941 } 1942 1943 private static native boolean nativeCleanupPrivateBrowsingFiles(String databaseDirectory, 1944 String cacheDirectory); 1945 1946 private boolean extendScroll(int y) { 1947 int finalY = mScroller.getFinalY(); 1948 int newY = pinLocY(finalY + y); 1949 if (newY == finalY) return false; 1950 mScroller.setFinalY(newY); 1951 mScroller.extendDuration(computeDuration(0, y)); 1952 return true; 1953 } 1954 1955 /** 1956 * Scroll the contents of the view up by half the view size 1957 * @param top true to jump to the top of the page 1958 * @return true if the page was scrolled 1959 */ 1960 public boolean pageUp(boolean top) { 1961 if (mNativeClass == 0) { 1962 return false; 1963 } 1964 nativeClearCursor(); // start next trackball movement from page edge 1965 if (top) { 1966 // go to the top of the document 1967 return pinScrollTo(mScrollX, 0, true, 0); 1968 } 1969 // Page up 1970 int h = getHeight(); 1971 int y; 1972 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1973 y = -h + PAGE_SCROLL_OVERLAP; 1974 } else { 1975 y = -h / 2; 1976 } 1977 mUserScroll = true; 1978 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1979 : extendScroll(y); 1980 } 1981 1982 /** 1983 * Scroll the contents of the view down by half the page size 1984 * @param bottom true to jump to bottom of page 1985 * @return true if the page was scrolled 1986 */ 1987 public boolean pageDown(boolean bottom) { 1988 if (mNativeClass == 0) { 1989 return false; 1990 } 1991 nativeClearCursor(); // start next trackball movement from page edge 1992 if (bottom) { 1993 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 1994 } 1995 // Page down. 1996 int h = getHeight(); 1997 int y; 1998 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1999 y = h - PAGE_SCROLL_OVERLAP; 2000 } else { 2001 y = h / 2; 2002 } 2003 mUserScroll = true; 2004 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2005 : extendScroll(y); 2006 } 2007 2008 /** 2009 * Clear the view so that onDraw() will draw nothing but white background, 2010 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2011 */ 2012 public void clearView() { 2013 mContentWidth = 0; 2014 mContentHeight = 0; 2015 setBaseLayer(0, null); 2016 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2017 } 2018 2019 /** 2020 * Return a new picture that captures the current display of the webview. 2021 * This is a copy of the display, and will be unaffected if the webview 2022 * later loads a different URL. 2023 * 2024 * @return a picture containing the current contents of the view. Note this 2025 * picture is of the entire document, and is not restricted to the 2026 * bounds of the view. 2027 */ 2028 public Picture capturePicture() { 2029 if (mNativeClass == 0) return null; 2030 Picture result = new Picture(); 2031 nativeCopyBaseContentToPicture(result); 2032 return result; 2033 } 2034 2035 /** 2036 * Return true if the browser is displaying a TextView for text input. 2037 */ 2038 private boolean inEditingMode() { 2039 return mWebTextView != null && mWebTextView.getParent() != null; 2040 } 2041 2042 /** 2043 * Remove the WebTextView. 2044 */ 2045 private void clearTextEntry() { 2046 if (inEditingMode()) { 2047 mWebTextView.remove(); 2048 } else { 2049 // The keyboard may be open with the WebView as the served view 2050 hideSoftKeyboard(); 2051 } 2052 } 2053 2054 /** 2055 * Return the current scale of the WebView 2056 * @return The current scale. 2057 */ 2058 public float getScale() { 2059 return mZoomManager.getScale(); 2060 } 2061 2062 /** 2063 * Set the initial scale for the WebView. 0 means default. If 2064 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2065 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2066 * WebView starts will this value as initial scale. 2067 * 2068 * @param scaleInPercent The initial scale in percent. 2069 */ 2070 public void setInitialScale(int scaleInPercent) { 2071 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2072 } 2073 2074 /** 2075 * Invoke the graphical zoom picker widget for this WebView. This will 2076 * result in the zoom widget appearing on the screen to control the zoom 2077 * level of this WebView. 2078 */ 2079 public void invokeZoomPicker() { 2080 if (!getSettings().supportZoom()) { 2081 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2082 return; 2083 } 2084 clearHelpers(); 2085 mZoomManager.invokeZoomPicker(); 2086 } 2087 2088 /** 2089 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2090 * is found and the anchor has a non-javascript url, the HitTestResult type 2091 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2092 * anchor does not have a url or if it is a javascript url, the type will 2093 * be UNKNOWN_TYPE and the url has to be retrieved through 2094 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2095 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2096 * the "extra" field. A type of 2097 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2098 * a child node. If a phone number is found, the HitTestResult type is set 2099 * to PHONE_TYPE and the phone number is set in the "extra" field of 2100 * HitTestResult. If a map address is found, the HitTestResult type is set 2101 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2102 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2103 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2104 * HitTestResult type is set to UNKNOWN_TYPE. 2105 */ 2106 public HitTestResult getHitTestResult() { 2107 if (mNativeClass == 0) { 2108 return null; 2109 } 2110 2111 HitTestResult result = new HitTestResult(); 2112 if (nativeHasCursorNode()) { 2113 if (nativeCursorIsTextInput()) { 2114 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2115 } else { 2116 String text = nativeCursorText(); 2117 if (text != null) { 2118 if (text.startsWith(SCHEME_TEL)) { 2119 result.setType(HitTestResult.PHONE_TYPE); 2120 result.setExtra(text.substring(SCHEME_TEL.length())); 2121 } else if (text.startsWith(SCHEME_MAILTO)) { 2122 result.setType(HitTestResult.EMAIL_TYPE); 2123 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2124 } else if (text.startsWith(SCHEME_GEO)) { 2125 result.setType(HitTestResult.GEO_TYPE); 2126 result.setExtra(URLDecoder.decode(text 2127 .substring(SCHEME_GEO.length()))); 2128 } else if (nativeCursorIsAnchor()) { 2129 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2130 result.setExtra(text); 2131 } 2132 } 2133 } 2134 } 2135 int type = result.getType(); 2136 if (type == HitTestResult.UNKNOWN_TYPE 2137 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2138 // Now check to see if it is an image. 2139 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2140 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2141 String text = nativeImageURI(contentX, contentY); 2142 if (text != null) { 2143 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2144 HitTestResult.IMAGE_TYPE : 2145 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2146 result.setExtra(text); 2147 } 2148 } 2149 return result; 2150 } 2151 2152 // Called by JNI when the DOM has changed the focus. Clear the focus so 2153 // that new keys will go to the newly focused field 2154 private void domChangedFocus() { 2155 if (inEditingMode()) { 2156 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2157 } 2158 } 2159 /** 2160 * Request the href of an anchor element due to getFocusNodePath returning 2161 * "href." If hrefMsg is null, this method returns immediately and does not 2162 * dispatch hrefMsg to its target. 2163 * 2164 * @param hrefMsg This message will be dispatched with the result of the 2165 * request as the data member with "url" as key. The result can 2166 * be null. 2167 */ 2168 // FIXME: API change required to change the name of this function. We now 2169 // look at the cursor node, and not the focus node. Also, what is 2170 // getFocusNodePath? 2171 public void requestFocusNodeHref(Message hrefMsg) { 2172 if (hrefMsg == null || mNativeClass == 0) { 2173 return; 2174 } 2175 if (nativeCursorIsAnchor()) { 2176 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2177 nativeCursorFramePointer(), nativeCursorNodePointer(), 2178 hrefMsg); 2179 } 2180 } 2181 2182 /** 2183 * Request the url of the image last touched by the user. msg will be sent 2184 * to its target with a String representing the url as its object. 2185 * 2186 * @param msg This message will be dispatched with the result of the request 2187 * as the data member with "url" as key. The result can be null. 2188 */ 2189 public void requestImageRef(Message msg) { 2190 if (0 == mNativeClass) return; // client isn't initialized 2191 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2192 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2193 String ref = nativeImageURI(contentX, contentY); 2194 Bundle data = msg.getData(); 2195 data.putString("url", ref); 2196 msg.setData(data); 2197 msg.sendToTarget(); 2198 } 2199 2200 static int pinLoc(int x, int viewMax, int docMax) { 2201// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2202 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2203 // pin the short document to the top/left of the screen 2204 x = 0; 2205// Log.d(LOGTAG, "--- center " + x); 2206 } else if (x < 0) { 2207 x = 0; 2208// Log.d(LOGTAG, "--- zero"); 2209 } else if (x + viewMax > docMax) { 2210 x = docMax - viewMax; 2211// Log.d(LOGTAG, "--- pin " + x); 2212 } 2213 return x; 2214 } 2215 2216 // Expects x in view coordinates 2217 int pinLocX(int x) { 2218 if (mInOverScrollMode) return x; 2219 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2220 } 2221 2222 // Expects y in view coordinates 2223 int pinLocY(int y) { 2224 if (mInOverScrollMode) return y; 2225 return pinLoc(y, getViewHeightWithTitle(), 2226 computeRealVerticalScrollRange() + getTitleHeight()); 2227 } 2228 2229 /** 2230 * A title bar which is embedded in this WebView, and scrolls along with it 2231 * vertically, but not horizontally. 2232 */ 2233 private View mTitleBar; 2234 2235 /** 2236 * Add or remove a title bar to be embedded into the WebView, and scroll 2237 * along with it vertically, while remaining in view horizontally. Pass 2238 * null to remove the title bar from the WebView, and return to drawing 2239 * the WebView normally without translating to account for the title bar. 2240 * @hide 2241 */ 2242 public void setEmbeddedTitleBar(View v) { 2243 if (null == v) { 2244 // If one of our callbacks is holding onto the titlebar to replace 2245 // it when its ActionMode ends, remove it. 2246 if (mSelectCallback != null) { 2247 mSelectCallback.setTitleBar(null); 2248 } 2249 if (mFindCallback != null) { 2250 mFindCallback.setTitleBar(null); 2251 } 2252 } 2253 if (mTitleBar == v) return; 2254 if (mTitleBar != null) { 2255 removeView(mTitleBar); 2256 } 2257 if (null != v) { 2258 addView(v, new AbsoluteLayout.LayoutParams( 2259 ViewGroup.LayoutParams.MATCH_PARENT, 2260 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2261 } 2262 mTitleBar = v; 2263 } 2264 2265 /** 2266 * Given a distance in view space, convert it to content space. Note: this 2267 * does not reflect translation, just scaling, so this should not be called 2268 * with coordinates, but should be called for dimensions like width or 2269 * height. 2270 */ 2271 private int viewToContentDimension(int d) { 2272 return Math.round(d * mZoomManager.getInvScale()); 2273 } 2274 2275 /** 2276 * Given an x coordinate in view space, convert it to content space. Also 2277 * may be used for absolute heights (such as for the WebTextView's 2278 * textSize, which is unaffected by the height of the title bar). 2279 */ 2280 /*package*/ int viewToContentX(int x) { 2281 return viewToContentDimension(x); 2282 } 2283 2284 /** 2285 * Given a y coordinate in view space, convert it to content space. 2286 * Takes into account the height of the title bar if there is one 2287 * embedded into the WebView. 2288 */ 2289 /*package*/ int viewToContentY(int y) { 2290 return viewToContentDimension(y - getTitleHeight()); 2291 } 2292 2293 /** 2294 * Given a x coordinate in view space, convert it to content space. 2295 * Returns the result as a float. 2296 */ 2297 private float viewToContentXf(int x) { 2298 return x * mZoomManager.getInvScale(); 2299 } 2300 2301 /** 2302 * Given a y coordinate in view space, convert it to content space. 2303 * Takes into account the height of the title bar if there is one 2304 * embedded into the WebView. Returns the result as a float. 2305 */ 2306 private float viewToContentYf(int y) { 2307 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2308 } 2309 2310 /** 2311 * Given a distance in content space, convert it to view space. Note: this 2312 * does not reflect translation, just scaling, so this should not be called 2313 * with coordinates, but should be called for dimensions like width or 2314 * height. 2315 */ 2316 /*package*/ int contentToViewDimension(int d) { 2317 return Math.round(d * mZoomManager.getScale()); 2318 } 2319 2320 /** 2321 * Given an x coordinate in content space, convert it to view 2322 * space. 2323 */ 2324 /*package*/ int contentToViewX(int x) { 2325 return contentToViewDimension(x); 2326 } 2327 2328 /** 2329 * Given a y coordinate in content space, convert it to view 2330 * space. Takes into account the height of the title bar. 2331 */ 2332 /*package*/ int contentToViewY(int y) { 2333 return contentToViewDimension(y) + getTitleHeight(); 2334 } 2335 2336 private Rect contentToViewRect(Rect x) { 2337 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2338 contentToViewX(x.right), contentToViewY(x.bottom)); 2339 } 2340 2341 /* To invalidate a rectangle in content coordinates, we need to transform 2342 the rect into view coordinates, so we can then call invalidate(...). 2343 2344 Normally, we would just call contentToView[XY](...), which eventually 2345 calls Math.round(coordinate * mActualScale). However, for invalidates, 2346 we need to account for the slop that occurs with antialiasing. To 2347 address that, we are a little more liberal in the size of the rect that 2348 we invalidate. 2349 2350 This liberal calculation calls floor() for the top/left, and ceil() for 2351 the bottom/right coordinates. This catches the possible extra pixels of 2352 antialiasing that we might have missed with just round(). 2353 */ 2354 2355 // Called by JNI to invalidate the View, given rectangle coordinates in 2356 // content space 2357 private void viewInvalidate(int l, int t, int r, int b) { 2358 final float scale = mZoomManager.getScale(); 2359 final int dy = getTitleHeight(); 2360 invalidate((int)Math.floor(l * scale), 2361 (int)Math.floor(t * scale) + dy, 2362 (int)Math.ceil(r * scale), 2363 (int)Math.ceil(b * scale) + dy); 2364 } 2365 2366 // Called by JNI to invalidate the View after a delay, given rectangle 2367 // coordinates in content space 2368 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2369 final float scale = mZoomManager.getScale(); 2370 final int dy = getTitleHeight(); 2371 postInvalidateDelayed(delay, 2372 (int)Math.floor(l * scale), 2373 (int)Math.floor(t * scale) + dy, 2374 (int)Math.ceil(r * scale), 2375 (int)Math.ceil(b * scale) + dy); 2376 } 2377 2378 private void invalidateContentRect(Rect r) { 2379 viewInvalidate(r.left, r.top, r.right, r.bottom); 2380 } 2381 2382 // stop the scroll animation, and don't let a subsequent fling add 2383 // to the existing velocity 2384 private void abortAnimation() { 2385 mScroller.abortAnimation(); 2386 mLastVelocity = 0; 2387 } 2388 2389 /* call from webcoreview.draw(), so we're still executing in the UI thread 2390 */ 2391 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2392 2393 // premature data from webkit, ignore 2394 if ((w | h) == 0) { 2395 return; 2396 } 2397 2398 // don't abort a scroll animation if we didn't change anything 2399 if (mContentWidth != w || mContentHeight != h) { 2400 // record new dimensions 2401 mContentWidth = w; 2402 mContentHeight = h; 2403 // If history Picture is drawn, don't update scroll. They will be 2404 // updated when we get out of that mode. 2405 if (!mDrawHistory) { 2406 // repin our scroll, taking into account the new content size 2407 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2408 if (!mScroller.isFinished()) { 2409 // We are in the middle of a scroll. Repin the final scroll 2410 // position. 2411 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2412 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2413 } 2414 } 2415 } 2416 contentSizeChanged(updateLayout); 2417 } 2418 2419 // Used to avoid sending many visible rect messages. 2420 private Rect mLastVisibleRectSent; 2421 private Rect mLastGlobalRect; 2422 2423 Rect sendOurVisibleRect() { 2424 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2425 Rect rect = new Rect(); 2426 calcOurContentVisibleRect(rect); 2427 // Rect.equals() checks for null input. 2428 if (!rect.equals(mLastVisibleRectSent)) { 2429 Point pos = new Point(rect.left, rect.top); 2430 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2431 nativeMoveGeneration(), mUserScroll ? 1 : 0, pos); 2432 mLastVisibleRectSent = rect; 2433 } 2434 Rect globalRect = new Rect(); 2435 if (getGlobalVisibleRect(globalRect) 2436 && !globalRect.equals(mLastGlobalRect)) { 2437 if (DebugFlags.WEB_VIEW) { 2438 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2439 + globalRect.top + ",r=" + globalRect.right + ",b=" 2440 + globalRect.bottom); 2441 } 2442 // TODO: the global offset is only used by windowRect() 2443 // in ChromeClientAndroid ; other clients such as touch 2444 // and mouse events could return view + screen relative points. 2445 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2446 mLastGlobalRect = globalRect; 2447 } 2448 return rect; 2449 } 2450 2451 // Sets r to be the visible rectangle of our webview in view coordinates 2452 private void calcOurVisibleRect(Rect r) { 2453 Point p = new Point(); 2454 getGlobalVisibleRect(r, p); 2455 r.offset(-p.x, -p.y); 2456 } 2457 2458 // Sets r to be our visible rectangle in content coordinates 2459 private void calcOurContentVisibleRect(Rect r) { 2460 calcOurVisibleRect(r); 2461 // since we might overscroll, pin the rect to the bounds of the content 2462 r.left = Math.max(viewToContentX(r.left), 0); 2463 // viewToContentY will remove the total height of the title bar. Add 2464 // the visible height back in to account for the fact that if the title 2465 // bar is partially visible, the part of the visible rect which is 2466 // displaying our content is displaced by that amount. 2467 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2468 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2469 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2470 } 2471 2472 // Sets r to be our visible rectangle in content coordinates. We use this 2473 // method on the native side to compute the position of the fixed layers. 2474 // Uses floating coordinates (necessary to correctly place elements when 2475 // the scale factor is not 1) 2476 private void calcOurContentVisibleRectF(RectF r) { 2477 Rect ri = new Rect(0,0,0,0); 2478 calcOurVisibleRect(ri); 2479 // pin the rect to the bounds of the content 2480 r.left = Math.max(viewToContentXf(ri.left), 0.0f); 2481 // viewToContentY will remove the total height of the title bar. Add 2482 // the visible height back in to account for the fact that if the title 2483 // bar is partially visible, the part of the visible rect which is 2484 // displaying our content is displaced by that amount. 2485 r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f); 2486 r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth); 2487 r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight); 2488 } 2489 2490 static class ViewSizeData { 2491 int mWidth; 2492 int mHeight; 2493 int mTextWrapWidth; 2494 int mAnchorX; 2495 int mAnchorY; 2496 float mScale; 2497 boolean mIgnoreHeight; 2498 } 2499 2500 /** 2501 * Compute unzoomed width and height, and if they differ from the last 2502 * values we sent, send them to webkit (to be used as new viewport) 2503 * 2504 * @param force ensures that the message is sent to webkit even if the width 2505 * or height has not changed since the last message 2506 * 2507 * @return true if new values were sent 2508 */ 2509 boolean sendViewSizeZoom(boolean force) { 2510 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2511 2512 int viewWidth = getViewWidth(); 2513 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2514 int newHeight = Math.round((getViewHeightWithTitle() - getTitleHeight()) * mZoomManager.getInvScale()); 2515 /* 2516 * Because the native side may have already done a layout before the 2517 * View system was able to measure us, we have to send a height of 0 to 2518 * remove excess whitespace when we grow our width. This will trigger a 2519 * layout and a change in content size. This content size change will 2520 * mean that contentSizeChanged will either call this method directly or 2521 * indirectly from onSizeChanged. 2522 */ 2523 if (newWidth > mLastWidthSent && mWrapContent) { 2524 newHeight = 0; 2525 } 2526 // Avoid sending another message if the dimensions have not changed. 2527 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force) { 2528 ViewSizeData data = new ViewSizeData(); 2529 data.mWidth = newWidth; 2530 data.mHeight = newHeight; 2531 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2532 data.mScale = mZoomManager.getScale(); 2533 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2534 && !mHeightCanMeasure; 2535 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2536 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2537 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2538 mLastWidthSent = newWidth; 2539 mLastHeightSent = newHeight; 2540 mZoomManager.clearDocumentAnchor(); 2541 return true; 2542 } 2543 return false; 2544 } 2545 2546 private int computeRealHorizontalScrollRange() { 2547 if (mDrawHistory) { 2548 return mHistoryWidth; 2549 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2550 && !mZoomManager.canZoomOut()) { 2551 // only honor the scrollbar mode when it is at minimum zoom level 2552 return computeHorizontalScrollExtent(); 2553 } else { 2554 // to avoid rounding error caused unnecessary scrollbar, use floor 2555 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2556 } 2557 } 2558 2559 @Override 2560 protected int computeHorizontalScrollRange() { 2561 int range = computeRealHorizontalScrollRange(); 2562 2563 // Adjust reported range if overscrolled to compress the scroll bars 2564 final int scrollX = mScrollX; 2565 final int overscrollRight = computeMaxScrollX(); 2566 if (scrollX < 0) { 2567 range -= scrollX; 2568 } else if (scrollX > overscrollRight) { 2569 range += scrollX - overscrollRight; 2570 } 2571 2572 return range; 2573 } 2574 2575 @Override 2576 protected int computeHorizontalScrollOffset() { 2577 return Math.max(mScrollX, 0); 2578 } 2579 2580 private int computeRealVerticalScrollRange() { 2581 if (mDrawHistory) { 2582 return mHistoryHeight; 2583 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2584 && !mZoomManager.canZoomOut()) { 2585 // only honor the scrollbar mode when it is at minimum zoom level 2586 return computeVerticalScrollExtent(); 2587 } else { 2588 // to avoid rounding error caused unnecessary scrollbar, use floor 2589 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2590 } 2591 } 2592 2593 @Override 2594 protected int computeVerticalScrollRange() { 2595 int range = computeRealVerticalScrollRange(); 2596 2597 // Adjust reported range if overscrolled to compress the scroll bars 2598 final int scrollY = mScrollY; 2599 final int overscrollBottom = computeMaxScrollY(); 2600 if (scrollY < 0) { 2601 range -= scrollY; 2602 } else if (scrollY > overscrollBottom) { 2603 range += scrollY - overscrollBottom; 2604 } 2605 2606 return range; 2607 } 2608 2609 @Override 2610 protected int computeVerticalScrollOffset() { 2611 return Math.max(mScrollY - getTitleHeight(), 0); 2612 } 2613 2614 @Override 2615 protected int computeVerticalScrollExtent() { 2616 return getViewHeight(); 2617 } 2618 2619 /** @hide */ 2620 @Override 2621 protected void onDrawVerticalScrollBar(Canvas canvas, 2622 Drawable scrollBar, 2623 int l, int t, int r, int b) { 2624 if (mScrollY < 0) { 2625 t -= mScrollY; 2626 } 2627 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2628 scrollBar.draw(canvas); 2629 } 2630 2631 @Override 2632 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2633 boolean clampedY) { 2634 mInOverScrollMode = false; 2635 int maxX = computeMaxScrollX(); 2636 int maxY = computeMaxScrollY(); 2637 if (maxX == 0) { 2638 // do not over scroll x if the page just fits the screen 2639 scrollX = pinLocX(scrollX); 2640 } else if (scrollX < 0 || scrollX > maxX) { 2641 mInOverScrollMode = true; 2642 } 2643 if (scrollY < 0 || scrollY > maxY) { 2644 mInOverScrollMode = true; 2645 } 2646 2647 int oldX = mScrollX; 2648 int oldY = mScrollY; 2649 2650 super.scrollTo(scrollX, scrollY); 2651 2652 if (mOverScrollGlow != null) { 2653 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2654 } 2655 } 2656 2657 /** 2658 * Get the url for the current page. This is not always the same as the url 2659 * passed to WebViewClient.onPageStarted because although the load for 2660 * that url has begun, the current page may not have changed. 2661 * @return The url for the current page. 2662 */ 2663 public String getUrl() { 2664 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2665 return h != null ? h.getUrl() : null; 2666 } 2667 2668 /** 2669 * Get the original url for the current page. This is not always the same 2670 * as the url passed to WebViewClient.onPageStarted because although the 2671 * load for that url has begun, the current page may not have changed. 2672 * Also, there may have been redirects resulting in a different url to that 2673 * originally requested. 2674 * @return The url that was originally requested for the current page. 2675 */ 2676 public String getOriginalUrl() { 2677 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2678 return h != null ? h.getOriginalUrl() : null; 2679 } 2680 2681 /** 2682 * Get the title for the current page. This is the title of the current page 2683 * until WebViewClient.onReceivedTitle is called. 2684 * @return The title for the current page. 2685 */ 2686 public String getTitle() { 2687 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2688 return h != null ? h.getTitle() : null; 2689 } 2690 2691 /** 2692 * Get the favicon for the current page. This is the favicon of the current 2693 * page until WebViewClient.onReceivedIcon is called. 2694 * @return The favicon for the current page. 2695 */ 2696 public Bitmap getFavicon() { 2697 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2698 return h != null ? h.getFavicon() : null; 2699 } 2700 2701 /** 2702 * Get the touch icon url for the apple-touch-icon <link> element, or 2703 * a URL on this site's server pointing to the standard location of a 2704 * touch icon. 2705 * @hide 2706 */ 2707 public String getTouchIconUrl() { 2708 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2709 return h != null ? h.getTouchIconUrl() : null; 2710 } 2711 2712 /** 2713 * Get the progress for the current page. 2714 * @return The progress for the current page between 0 and 100. 2715 */ 2716 public int getProgress() { 2717 return mCallbackProxy.getProgress(); 2718 } 2719 2720 /** 2721 * @return the height of the HTML content. 2722 */ 2723 public int getContentHeight() { 2724 return mContentHeight; 2725 } 2726 2727 /** 2728 * @return the width of the HTML content. 2729 * @hide 2730 */ 2731 public int getContentWidth() { 2732 return mContentWidth; 2733 } 2734 2735 /** 2736 * Pause all layout, parsing, and javascript timers for all webviews. This 2737 * is a global requests, not restricted to just this webview. This can be 2738 * useful if the application has been paused. 2739 */ 2740 public void pauseTimers() { 2741 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2742 } 2743 2744 /** 2745 * Resume all layout, parsing, and javascript timers for all webviews. 2746 * This will resume dispatching all timers. 2747 */ 2748 public void resumeTimers() { 2749 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2750 } 2751 2752 /** 2753 * Call this to pause any extra processing associated with this view and 2754 * its associated DOM/plugins/javascript/etc. For example, if the view is 2755 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2756 * network traffic. When the view is again "active", call onResume(). 2757 * 2758 * Note that this differs from pauseTimers(), which affects all views/DOMs 2759 * @hide 2760 */ 2761 public void onPause() { 2762 if (!mIsPaused) { 2763 mIsPaused = true; 2764 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2765 } 2766 } 2767 2768 /** 2769 * Call this to balanace a previous call to onPause() 2770 * @hide 2771 */ 2772 public void onResume() { 2773 if (mIsPaused) { 2774 mIsPaused = false; 2775 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2776 } 2777 } 2778 2779 /** 2780 * Returns true if the view is paused, meaning onPause() was called. Calling 2781 * onResume() sets the paused state back to false. 2782 * @hide 2783 */ 2784 public boolean isPaused() { 2785 return mIsPaused; 2786 } 2787 2788 /** 2789 * Call this to inform the view that memory is low so that it can 2790 * free any available memory. 2791 */ 2792 public void freeMemory() { 2793 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2794 } 2795 2796 /** 2797 * Clear the resource cache. Note that the cache is per-application, so 2798 * this will clear the cache for all WebViews used. 2799 * 2800 * @param includeDiskFiles If false, only the RAM cache is cleared. 2801 */ 2802 public void clearCache(boolean includeDiskFiles) { 2803 // Note: this really needs to be a static method as it clears cache for all 2804 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2805 // we can't make this static. 2806 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2807 includeDiskFiles ? 1 : 0, 0); 2808 } 2809 2810 /** 2811 * Make sure that clearing the form data removes the adapter from the 2812 * currently focused textfield if there is one. 2813 */ 2814 public void clearFormData() { 2815 if (inEditingMode()) { 2816 AutoCompleteAdapter adapter = null; 2817 mWebTextView.setAdapterCustom(adapter); 2818 } 2819 } 2820 2821 /** 2822 * Tell the WebView to clear its internal back/forward list. 2823 */ 2824 public void clearHistory() { 2825 mCallbackProxy.getBackForwardList().setClearPending(); 2826 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2827 } 2828 2829 /** 2830 * Clear the SSL preferences table stored in response to proceeding with SSL 2831 * certificate errors. 2832 */ 2833 public void clearSslPreferences() { 2834 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2835 } 2836 2837 /** 2838 * Return the WebBackForwardList for this WebView. This contains the 2839 * back/forward list for use in querying each item in the history stack. 2840 * This is a copy of the private WebBackForwardList so it contains only a 2841 * snapshot of the current state. Multiple calls to this method may return 2842 * different objects. The object returned from this method will not be 2843 * updated to reflect any new state. 2844 */ 2845 public WebBackForwardList copyBackForwardList() { 2846 return mCallbackProxy.getBackForwardList().clone(); 2847 } 2848 2849 /* 2850 * Highlight and scroll to the next occurance of String in findAll. 2851 * Wraps the page infinitely, and scrolls. Must be called after 2852 * calling findAll. 2853 * 2854 * @param forward Direction to search. 2855 */ 2856 public void findNext(boolean forward) { 2857 if (0 == mNativeClass) return; // client isn't initialized 2858 nativeFindNext(forward); 2859 } 2860 2861 /* 2862 * Find all instances of find on the page and highlight them. 2863 * @param find String to find. 2864 * @return int The number of occurances of the String "find" 2865 * that were found. 2866 */ 2867 public int findAll(String find) { 2868 if (0 == mNativeClass) return 0; // client isn't initialized 2869 int result = find != null ? nativeFindAll(find.toLowerCase(), 2870 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 2871 invalidate(); 2872 mLastFind = find; 2873 return result; 2874 } 2875 2876 /** 2877 * Start an ActionMode for finding text in this WebView. 2878 * @param text If non-null, will be the initial text to search for. 2879 * Otherwise, the last String searched for in this WebView will 2880 * be used to start. 2881 */ 2882 public void showFindDialog(String text) { 2883 mFindCallback = new FindActionModeCallback(mContext); 2884 setFindIsUp(true); 2885 mFindCallback.setWebView(this); 2886 View titleBar = mTitleBar; 2887 // We do not want to show the embedded title bar during find or 2888 // select, but keep track of it so that it can be replaced when the 2889 // mode is exited. 2890 setEmbeddedTitleBar(null); 2891 mFindCallback.setTitleBar(titleBar); 2892 startActionMode(mFindCallback); 2893 if (text == null) { 2894 text = mLastFind; 2895 } 2896 if (text != null) { 2897 mFindCallback.setText(text); 2898 } 2899 } 2900 2901 /** 2902 * Keep track of the find callback so that we can remove its titlebar if 2903 * necessary. 2904 */ 2905 private FindActionModeCallback mFindCallback; 2906 2907 /** 2908 * Toggle whether the find dialog is showing, for both native and Java. 2909 */ 2910 private void setFindIsUp(boolean isUp) { 2911 mFindIsUp = isUp; 2912 if (0 == mNativeClass) return; // client isn't initialized 2913 nativeSetFindIsUp(isUp); 2914 } 2915 2916 /** 2917 * Return the index of the currently highlighted match. 2918 */ 2919 int findIndex() { 2920 if (0 == mNativeClass) return -1; 2921 return nativeFindIndex(); 2922 } 2923 2924 // Used to know whether the find dialog is open. Affects whether 2925 // or not we draw the highlights for matches. 2926 private boolean mFindIsUp; 2927 2928 // Keep track of the last string sent, so we can search again when find is 2929 // reopened. 2930 private String mLastFind; 2931 2932 /** 2933 * Return the first substring consisting of the address of a physical 2934 * location. Currently, only addresses in the United States are detected, 2935 * and consist of: 2936 * - a house number 2937 * - a street name 2938 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2939 * - a city name 2940 * - a state or territory, either spelled out or two-letter abbr. 2941 * - an optional 5 digit or 9 digit zip code. 2942 * 2943 * All names must be correctly capitalized, and the zip code, if present, 2944 * must be valid for the state. The street type must be a standard USPS 2945 * spelling or abbreviation. The state or territory must also be spelled 2946 * or abbreviated using USPS standards. The house number may not exceed 2947 * five digits. 2948 * @param addr The string to search for addresses. 2949 * 2950 * @return the address, or if no address is found, return null. 2951 */ 2952 public static String findAddress(String addr) { 2953 return findAddress(addr, false); 2954 } 2955 2956 /** 2957 * @hide 2958 * Return the first substring consisting of the address of a physical 2959 * location. Currently, only addresses in the United States are detected, 2960 * and consist of: 2961 * - a house number 2962 * - a street name 2963 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2964 * - a city name 2965 * - a state or territory, either spelled out or two-letter abbr. 2966 * - an optional 5 digit or 9 digit zip code. 2967 * 2968 * Names are optionally capitalized, and the zip code, if present, 2969 * must be valid for the state. The street type must be a standard USPS 2970 * spelling or abbreviation. The state or territory must also be spelled 2971 * or abbreviated using USPS standards. The house number may not exceed 2972 * five digits. 2973 * @param addr The string to search for addresses. 2974 * @param caseInsensitive addr Set to true to make search ignore case. 2975 * 2976 * @return the address, or if no address is found, return null. 2977 */ 2978 public static String findAddress(String addr, boolean caseInsensitive) { 2979 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2980 } 2981 2982 /* 2983 * Clear the highlighting surrounding text matches created by findAll. 2984 */ 2985 public void clearMatches() { 2986 if (mNativeClass == 0) 2987 return; 2988 nativeSetFindIsEmpty(); 2989 invalidate(); 2990 } 2991 2992 /** 2993 * Called when the find ActionMode ends. 2994 */ 2995 void notifyFindDialogDismissed() { 2996 mFindCallback = null; 2997 if (mWebViewCore == null) { 2998 return; 2999 } 3000 clearMatches(); 3001 setFindIsUp(false); 3002 // Now that the dialog has been removed, ensure that we scroll to a 3003 // location that is not beyond the end of the page. 3004 pinScrollTo(mScrollX, mScrollY, false, 0); 3005 invalidate(); 3006 } 3007 3008 /** 3009 * Query the document to see if it contains any image references. The 3010 * message object will be dispatched with arg1 being set to 1 if images 3011 * were found and 0 if the document does not reference any images. 3012 * @param response The message that will be dispatched with the result. 3013 */ 3014 public void documentHasImages(Message response) { 3015 if (response == null) { 3016 return; 3017 } 3018 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3019 } 3020 3021 /** 3022 * Request the scroller to abort any ongoing animation 3023 * 3024 * @hide 3025 */ 3026 public void stopScroll() { 3027 mScroller.forceFinished(true); 3028 mLastVelocity = 0; 3029 } 3030 3031 @Override 3032 public void computeScroll() { 3033 if (mScroller.computeScrollOffset()) { 3034 int oldX = mScrollX; 3035 int oldY = mScrollY; 3036 int x = mScroller.getCurrX(); 3037 int y = mScroller.getCurrY(); 3038 invalidate(); // So we draw again 3039 3040 if (!mScroller.isFinished()) { 3041 final int rangeX = computeMaxScrollX(); 3042 final int rangeY = computeMaxScrollY(); 3043 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3044 rangeX, rangeY, 3045 mOverflingDistance, mOverflingDistance, false); 3046 3047 if (mOverScrollGlow != null) { 3048 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3049 } 3050 } else { 3051 mScrollX = x; 3052 mScrollY = y; 3053 abortAnimation(); 3054 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3055 WebViewCore.resumePriority(); 3056 if (!mSelectingText) { 3057 WebViewCore.resumeUpdatePicture(mWebViewCore); 3058 } 3059 } 3060 } else { 3061 super.computeScroll(); 3062 } 3063 } 3064 3065 private static int computeDuration(int dx, int dy) { 3066 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3067 int duration = distance * 1000 / STD_SPEED; 3068 return Math.min(duration, MAX_DURATION); 3069 } 3070 3071 // helper to pin the scrollBy parameters (already in view coordinates) 3072 // returns true if the scroll was changed 3073 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3074 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3075 } 3076 // helper to pin the scrollTo parameters (already in view coordinates) 3077 // returns true if the scroll was changed 3078 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3079 x = pinLocX(x); 3080 y = pinLocY(y); 3081 int dx = x - mScrollX; 3082 int dy = y - mScrollY; 3083 3084 if ((dx | dy) == 0) { 3085 return false; 3086 } 3087 abortAnimation(); 3088 if (animate) { 3089 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3090 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3091 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3092 awakenScrollBars(mScroller.getDuration()); 3093 invalidate(); 3094 } else { 3095 scrollTo(x, y); 3096 } 3097 return true; 3098 } 3099 3100 // Scale from content to view coordinates, and pin. 3101 // Also called by jni webview.cpp 3102 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3103 if (mDrawHistory) { 3104 // disallow WebView to change the scroll position as History Picture 3105 // is used in the view system. 3106 // TODO: as we switchOutDrawHistory when trackball or navigation 3107 // keys are hit, this should be safe. Right? 3108 return false; 3109 } 3110 cx = contentToViewDimension(cx); 3111 cy = contentToViewDimension(cy); 3112 if (mHeightCanMeasure) { 3113 // move our visible rect according to scroll request 3114 if (cy != 0) { 3115 Rect tempRect = new Rect(); 3116 calcOurVisibleRect(tempRect); 3117 tempRect.offset(cx, cy); 3118 requestRectangleOnScreen(tempRect); 3119 } 3120 // FIXME: We scroll horizontally no matter what because currently 3121 // ScrollView and ListView will not scroll horizontally. 3122 // FIXME: Why do we only scroll horizontally if there is no 3123 // vertical scroll? 3124// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3125 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3126 } else { 3127 return pinScrollBy(cx, cy, animate, 0); 3128 } 3129 } 3130 3131 /** 3132 * Called by CallbackProxy when the page starts loading. 3133 * @param url The URL of the page which has started loading. 3134 */ 3135 /* package */ void onPageStarted(String url) { 3136 // every time we start a new page, we want to reset the 3137 // WebView certificate: if the new site is secure, we 3138 // will reload it and get a new certificate set; 3139 // if the new site is not secure, the certificate must be 3140 // null, and that will be the case 3141 setCertificate(null); 3142 3143 // reset the flag since we set to true in if need after 3144 // loading is see onPageFinished(Url) 3145 mAccessibilityScriptInjected = false; 3146 } 3147 3148 /** 3149 * Called by CallbackProxy when the page finishes loading. 3150 * @param url The URL of the page which has finished loading. 3151 */ 3152 /* package */ void onPageFinished(String url) { 3153 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3154 // If the user is now on a different page, or has scrolled the page 3155 // past the point where the title bar is offscreen, ignore the 3156 // scroll request. 3157 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3158 && mScrollX == 0 && mScrollY == 0) { 3159 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3160 SLIDE_TITLE_DURATION); 3161 } 3162 mPageThatNeedsToSlideTitleBarOffScreen = null; 3163 } 3164 3165 injectAccessibilityForUrl(url); 3166 } 3167 3168 /** 3169 * This method injects accessibility in the loaded document if accessibility 3170 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3171 * If no URL specific script is found or JavaScript is disabled we fallback to 3172 * the default {@link AccessibilityInjector} implementation. 3173 * </p> 3174 * If the URL has the "axs" paramter set to 1 it has already done the 3175 * script injection so we do nothing. If the parameter is set to 0 3176 * the URL opts out accessibility script injection so we fall back to 3177 * the default {@link AccessibilityInjector}. 3178 * </p> 3179 * Note: If the user has not opted-in the accessibility script injection no scripts 3180 * are injected rather the default {@link AccessibilityInjector} implementation 3181 * is used. 3182 * 3183 * @param url The URL loaded by this {@link WebView}. 3184 */ 3185 private void injectAccessibilityForUrl(String url) { 3186 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3187 3188 if (!accessibilityManager.isEnabled()) { 3189 // it is possible that accessibility was turned off between reloads 3190 ensureAccessibilityScriptInjectorInstance(false); 3191 return; 3192 } 3193 3194 if (!getSettings().getJavaScriptEnabled()) { 3195 // no JS so we fallback to the basic buil-in support 3196 ensureAccessibilityScriptInjectorInstance(true); 3197 return; 3198 } 3199 3200 // check the URL "axs" parameter to choose appropriate action 3201 int axsParameterValue = getAxsUrlParameterValue(url); 3202 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3203 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3204 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3205 if (onDeviceScriptInjectionEnabled) { 3206 ensureAccessibilityScriptInjectorInstance(false); 3207 // neither script injected nor script injection opted out => we inject 3208 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3209 // TODO: Set this flag after successfull script injection. Maybe upon injection 3210 // the chooser should update the meta tag and we check it to declare success 3211 mAccessibilityScriptInjected = true; 3212 } else { 3213 // injection disabled so we fallback to the basic built-in support 3214 ensureAccessibilityScriptInjectorInstance(true); 3215 } 3216 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3217 // injection opted out so we fallback to the basic buil-in support 3218 ensureAccessibilityScriptInjectorInstance(true); 3219 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3220 ensureAccessibilityScriptInjectorInstance(false); 3221 // the URL provides accessibility but we still need to add our generic script 3222 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3223 } else { 3224 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3225 } 3226 } 3227 3228 /** 3229 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3230 * 3231 * @param present True to ensure an insance, false to ensure no instance. 3232 */ 3233 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3234 if (present && mAccessibilityInjector == null) { 3235 mAccessibilityInjector = new AccessibilityInjector(this); 3236 } else { 3237 mAccessibilityInjector = null; 3238 } 3239 } 3240 3241 /** 3242 * Gets the "axs" URL parameter value. 3243 * 3244 * @param url A url to fetch the paramter from. 3245 * @return The parameter value if such, -1 otherwise. 3246 */ 3247 private int getAxsUrlParameterValue(String url) { 3248 if (mMatchAxsUrlParameterPattern == null) { 3249 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3250 } 3251 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3252 if (matcher.find()) { 3253 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3254 return Integer.parseInt(keyValuePair.split("=")[1]); 3255 } 3256 return -1; 3257 } 3258 3259 /** 3260 * The URL of a page that sent a message to scroll the title bar off screen. 3261 * 3262 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3263 * title bar off the screen. Sometimes, the scroll position is set before 3264 * the page finishes loading. Rather than scrolling while the page is still 3265 * loading, keep track of the URL and new scroll position so we can perform 3266 * the scroll once the page finishes loading. 3267 */ 3268 private String mPageThatNeedsToSlideTitleBarOffScreen; 3269 3270 /** 3271 * The destination Y scroll position to be used when the page finishes 3272 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3273 */ 3274 private int mYDistanceToSlideTitleOffScreen; 3275 3276 // scale from content to view coordinates, and pin 3277 // return true if pin caused the final x/y different than the request cx/cy, 3278 // and a future scroll may reach the request cx/cy after our size has 3279 // changed 3280 // return false if the view scroll to the exact position as it is requested, 3281 // where negative numbers are taken to mean 0 3282 private boolean setContentScrollTo(int cx, int cy) { 3283 if (mDrawHistory) { 3284 // disallow WebView to change the scroll position as History Picture 3285 // is used in the view system. 3286 // One known case where this is called is that WebCore tries to 3287 // restore the scroll position. As history Picture already uses the 3288 // saved scroll position, it is ok to skip this. 3289 return false; 3290 } 3291 int vx; 3292 int vy; 3293 if ((cx | cy) == 0) { 3294 // If the page is being scrolled to (0,0), do not add in the title 3295 // bar's height, and simply scroll to (0,0). (The only other work 3296 // in contentToView_ is to multiply, so this would not change 0.) 3297 vx = 0; 3298 vy = 0; 3299 } else { 3300 vx = contentToViewX(cx); 3301 vy = contentToViewY(cy); 3302 } 3303// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3304// vx + " " + vy + "]"); 3305 // Some mobile sites attempt to scroll the title bar off the page by 3306 // scrolling to (0,1). If we are at the top left corner of the 3307 // page, assume this is an attempt to scroll off the title bar, and 3308 // animate the title bar off screen slowly enough that the user can see 3309 // it. 3310 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3311 && mTitleBar != null) { 3312 // FIXME: 100 should be defined somewhere as our max progress. 3313 if (getProgress() < 100) { 3314 // Wait to scroll the title bar off screen until the page has 3315 // finished loading. Keep track of the URL and the destination 3316 // Y position 3317 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3318 mYDistanceToSlideTitleOffScreen = vy; 3319 } else { 3320 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3321 } 3322 // Since we are animating, we have not yet reached the desired 3323 // scroll position. Do not return true to request another attempt 3324 return false; 3325 } 3326 pinScrollTo(vx, vy, false, 0); 3327 // If the request was to scroll to a negative coordinate, treat it as if 3328 // it was a request to scroll to 0 3329 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3330 return true; 3331 } else { 3332 return false; 3333 } 3334 } 3335 3336 // scale from content to view coordinates, and pin 3337 private void spawnContentScrollTo(int cx, int cy) { 3338 if (mDrawHistory) { 3339 // disallow WebView to change the scroll position as History Picture 3340 // is used in the view system. 3341 return; 3342 } 3343 int vx = contentToViewX(cx); 3344 int vy = contentToViewY(cy); 3345 pinScrollTo(vx, vy, true, 0); 3346 } 3347 3348 /** 3349 * These are from webkit, and are in content coordinate system (unzoomed) 3350 */ 3351 private void contentSizeChanged(boolean updateLayout) { 3352 // suppress 0,0 since we usually see real dimensions soon after 3353 // this avoids drawing the prev content in a funny place. If we find a 3354 // way to consolidate these notifications, this check may become 3355 // obsolete 3356 if ((mContentWidth | mContentHeight) == 0) { 3357 return; 3358 } 3359 3360 if (mHeightCanMeasure) { 3361 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3362 || updateLayout) { 3363 requestLayout(); 3364 } 3365 } else if (mWidthCanMeasure) { 3366 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3367 || updateLayout) { 3368 requestLayout(); 3369 } 3370 } else { 3371 // If we don't request a layout, try to send our view size to the 3372 // native side to ensure that WebCore has the correct dimensions. 3373 sendViewSizeZoom(false); 3374 } 3375 } 3376 3377 /** 3378 * Set the WebViewClient that will receive various notifications and 3379 * requests. This will replace the current handler. 3380 * @param client An implementation of WebViewClient. 3381 */ 3382 public void setWebViewClient(WebViewClient client) { 3383 mCallbackProxy.setWebViewClient(client); 3384 } 3385 3386 /** 3387 * Gets the WebViewClient 3388 * @return the current WebViewClient instance. 3389 * 3390 *@hide pending API council approval. 3391 */ 3392 public WebViewClient getWebViewClient() { 3393 return mCallbackProxy.getWebViewClient(); 3394 } 3395 3396 /** 3397 * Register the interface to be used when content can not be handled by 3398 * the rendering engine, and should be downloaded instead. This will replace 3399 * the current handler. 3400 * @param listener An implementation of DownloadListener. 3401 */ 3402 public void setDownloadListener(DownloadListener listener) { 3403 mCallbackProxy.setDownloadListener(listener); 3404 } 3405 3406 /** 3407 * Set the chrome handler. This is an implementation of WebChromeClient for 3408 * use in handling Javascript dialogs, favicons, titles, and the progress. 3409 * This will replace the current handler. 3410 * @param client An implementation of WebChromeClient. 3411 */ 3412 public void setWebChromeClient(WebChromeClient client) { 3413 mCallbackProxy.setWebChromeClient(client); 3414 } 3415 3416 /** 3417 * Gets the chrome handler. 3418 * @return the current WebChromeClient instance. 3419 * 3420 * @hide API council approval. 3421 */ 3422 public WebChromeClient getWebChromeClient() { 3423 return mCallbackProxy.getWebChromeClient(); 3424 } 3425 3426 /** 3427 * Set the back/forward list client. This is an implementation of 3428 * WebBackForwardListClient for handling new items and changes in the 3429 * history index. 3430 * @param client An implementation of WebBackForwardListClient. 3431 * {@hide} 3432 */ 3433 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3434 mCallbackProxy.setWebBackForwardListClient(client); 3435 } 3436 3437 /** 3438 * Gets the WebBackForwardListClient. 3439 * {@hide} 3440 */ 3441 public WebBackForwardListClient getWebBackForwardListClient() { 3442 return mCallbackProxy.getWebBackForwardListClient(); 3443 } 3444 3445 /** 3446 * Set the Picture listener. This is an interface used to receive 3447 * notifications of a new Picture. 3448 * @param listener An implementation of WebView.PictureListener. 3449 */ 3450 public void setPictureListener(PictureListener listener) { 3451 mPictureListener = listener; 3452 } 3453 3454 /** 3455 * {@hide} 3456 */ 3457 /* FIXME: Debug only! Remove for SDK! */ 3458 public void externalRepresentation(Message callback) { 3459 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3460 } 3461 3462 /** 3463 * {@hide} 3464 */ 3465 /* FIXME: Debug only! Remove for SDK! */ 3466 public void documentAsText(Message callback) { 3467 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3468 } 3469 3470 /** 3471 * Use this function to bind an object to Javascript so that the 3472 * methods can be accessed from Javascript. 3473 * <p><strong>IMPORTANT:</strong> 3474 * <ul> 3475 * <li> Using addJavascriptInterface() allows JavaScript to control your 3476 * application. This can be a very useful feature or a dangerous security 3477 * issue. When the HTML in the WebView is untrustworthy (for example, part 3478 * or all of the HTML is provided by some person or process), then an 3479 * attacker could inject HTML that will execute your code and possibly any 3480 * code of the attacker's choosing.<br> 3481 * Do not use addJavascriptInterface() unless all of the HTML in this 3482 * WebView was written by you.</li> 3483 * <li> The Java object that is bound runs in another thread and not in 3484 * the thread that it was constructed in.</li> 3485 * </ul></p> 3486 * @param obj The class instance to bind to Javascript 3487 * @param interfaceName The name to used to expose the class in Javascript 3488 */ 3489 public void addJavascriptInterface(Object obj, String interfaceName) { 3490 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3491 arg.mObject = obj; 3492 arg.mInterfaceName = interfaceName; 3493 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3494 } 3495 3496 /** 3497 * Return the WebSettings object used to control the settings for this 3498 * WebView. 3499 * @return A WebSettings object that can be used to control this WebView's 3500 * settings. 3501 */ 3502 public WebSettings getSettings() { 3503 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3504 } 3505 3506 /** 3507 * Return the list of currently loaded plugins. 3508 * @return The list of currently loaded plugins. 3509 * 3510 * @deprecated This was used for Gears, which has been deprecated. 3511 */ 3512 @Deprecated 3513 public static synchronized PluginList getPluginList() { 3514 return new PluginList(); 3515 } 3516 3517 /** 3518 * @deprecated This was used for Gears, which has been deprecated. 3519 */ 3520 @Deprecated 3521 public void refreshPlugins(boolean reloadOpenPages) { } 3522 3523 //------------------------------------------------------------------------- 3524 // Override View methods 3525 //------------------------------------------------------------------------- 3526 3527 @Override 3528 protected void finalize() throws Throwable { 3529 try { 3530 destroy(); 3531 } finally { 3532 super.finalize(); 3533 } 3534 } 3535 3536 @Override 3537 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3538 if (child == mTitleBar) { 3539 // When drawing the title bar, move it horizontally to always show 3540 // at the top of the WebView. 3541 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3542 } 3543 return super.drawChild(canvas, child, drawingTime); 3544 } 3545 3546 private void drawContent(Canvas canvas) { 3547 // Update the buttons in the picture, so when we draw the picture 3548 // to the screen, they are in the correct state. 3549 // Tell the native side if user is a) touching the screen, 3550 // b) pressing the trackball down, or c) pressing the enter key 3551 // If the cursor is on a button, we need to draw it in the pressed 3552 // state. 3553 // If mNativeClass is 0, we should not reach here, so we do not 3554 // need to check it again. 3555 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3556 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3557 || mTrackballDown || mGotCenterDown, false); 3558 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3559 } 3560 3561 /** 3562 * Draw the background when beyond bounds 3563 * @param canvas Canvas to draw into 3564 */ 3565 private void drawOverScrollBackground(Canvas canvas) { 3566 if (mOverScrollBackground == null) { 3567 mOverScrollBackground = new Paint(); 3568 Bitmap bm = BitmapFactory.decodeResource( 3569 mContext.getResources(), 3570 com.android.internal.R.drawable.status_bar_background); 3571 mOverScrollBackground.setShader(new BitmapShader(bm, 3572 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3573 mOverScrollBorder = new Paint(); 3574 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3575 mOverScrollBorder.setStrokeWidth(0); 3576 mOverScrollBorder.setColor(0xffbbbbbb); 3577 } 3578 3579 int top = 0; 3580 int right = computeRealHorizontalScrollRange(); 3581 int bottom = top + computeRealVerticalScrollRange(); 3582 // first draw the background and anchor to the top of the view 3583 canvas.save(); 3584 canvas.translate(mScrollX, mScrollY); 3585 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3586 - mScrollY, Region.Op.DIFFERENCE); 3587 canvas.drawPaint(mOverScrollBackground); 3588 canvas.restore(); 3589 // then draw the border 3590 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3591 // next clip the region for the content 3592 canvas.clipRect(0, top, right, bottom); 3593 } 3594 3595 @Override 3596 protected void onDraw(Canvas canvas) { 3597 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3598 if (mNativeClass == 0) { 3599 return; 3600 } 3601 3602 // if both mContentWidth and mContentHeight are 0, it means there is no 3603 // valid Picture passed to WebView yet. This can happen when WebView 3604 // just starts. Draw the background and return. 3605 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3606 canvas.drawColor(mBackgroundColor); 3607 return; 3608 } 3609 3610 int saveCount = canvas.save(); 3611 if (mInOverScrollMode && !getSettings() 3612 .getUseWebViewBackgroundForOverscrollBackground()) { 3613 drawOverScrollBackground(canvas); 3614 } 3615 if (mTitleBar != null) { 3616 canvas.translate(0, (int) mTitleBar.getHeight()); 3617 } 3618 drawContent(canvas); 3619 canvas.restoreToCount(saveCount); 3620 3621 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3622 invalidate(); 3623 } 3624 if (inEditingMode()) { 3625 mWebTextView.onDrawSubstitute(); 3626 } 3627 mWebViewCore.signalRepaintDone(); 3628 3629 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3630 invalidate(); 3631 } 3632 3633 // paint the highlight in the end 3634 if (!mTouchHighlightRegion.isEmpty()) { 3635 if (mTouchHightlightPaint == null) { 3636 mTouchHightlightPaint = new Paint(); 3637 mTouchHightlightPaint.setColor(mHightlightColor); 3638 mTouchHightlightPaint.setAntiAlias(true); 3639 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3640 TOUCH_HIGHLIGHT_ARC)); 3641 } 3642 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3643 mTouchHightlightPaint); 3644 } 3645 if (DEBUG_TOUCH_HIGHLIGHT) { 3646 if (getSettings().getNavDump()) { 3647 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3648 if (mTouchCrossHairColor == null) { 3649 mTouchCrossHairColor = new Paint(); 3650 mTouchCrossHairColor.setColor(Color.RED); 3651 } 3652 canvas.drawLine(mTouchHighlightX - mNavSlop, 3653 mTouchHighlightY - mNavSlop, mTouchHighlightX 3654 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3655 + 1, mTouchCrossHairColor); 3656 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3657 mTouchHighlightY - mNavSlop, mTouchHighlightX 3658 - mNavSlop, 3659 mTouchHighlightY + mNavSlop + 1, 3660 mTouchCrossHairColor); 3661 } 3662 } 3663 } 3664 } 3665 3666 private void removeTouchHighlight(boolean removePendingMessage) { 3667 if (removePendingMessage) { 3668 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3669 } 3670 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3671 } 3672 3673 @Override 3674 public void setLayoutParams(ViewGroup.LayoutParams params) { 3675 if (params.height == LayoutParams.WRAP_CONTENT) { 3676 mWrapContent = true; 3677 } 3678 super.setLayoutParams(params); 3679 } 3680 3681 @Override 3682 public boolean performLongClick() { 3683 // performLongClick() is the result of a delayed message. If we switch 3684 // to windows overview, the WebView will be temporarily removed from the 3685 // view system. In that case, do nothing. 3686 if (getParent() == null) return false; 3687 3688 // A multi-finger gesture can look like a long press; make sure we don't take 3689 // long press actions if we're scaling. 3690 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3691 if (detector != null && detector.isInProgress()) { 3692 return false; 3693 } 3694 3695 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3696 // Send the click so that the textfield is in focus 3697 centerKeyPressOnTextField(); 3698 rebuildWebTextView(); 3699 } else { 3700 clearTextEntry(); 3701 } 3702 if (inEditingMode()) { 3703 return mWebTextView.performLongClick(); 3704 } 3705 if (mSelectingText) return false; // long click does nothing on selection 3706 /* if long click brings up a context menu, the super function 3707 * returns true and we're done. Otherwise, nothing happened when 3708 * the user clicked. */ 3709 if (super.performLongClick()) { 3710 return true; 3711 } 3712 /* In the case where the application hasn't already handled the long 3713 * click action, look for a word under the click. If one is found, 3714 * animate the text selection into view. 3715 * FIXME: no animation code yet */ 3716 return selectText(); 3717 } 3718 3719 /** 3720 * Select the word at the last click point. 3721 * 3722 * @hide pending API council approval 3723 */ 3724 public boolean selectText() { 3725 int x = viewToContentX((int) mLastTouchX + mScrollX); 3726 int y = viewToContentY((int) mLastTouchY + mScrollY); 3727 setUpSelect(); 3728 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3729 nativeSetExtendSelection(); 3730 mDrawSelectionPointer = false; 3731 return true; 3732 } 3733 selectionDone(); 3734 return false; 3735 } 3736 3737 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3738 3739 @Override 3740 protected void onConfigurationChanged(Configuration newConfig) { 3741 if (mSelectingText && mOrientation != newConfig.orientation) { 3742 selectionDone(); 3743 } 3744 mOrientation = newConfig.orientation; 3745 } 3746 3747 /** 3748 * Keep track of the Callback so we can end its ActionMode or remove its 3749 * titlebar. 3750 */ 3751 private SelectActionModeCallback mSelectCallback; 3752 3753 /** 3754 * Check to see if the focused textfield/textarea is still on screen. If it 3755 * is, update the the dimensions and location of WebTextView. Otherwise, 3756 * remove the WebTextView. Should be called when the zoom level changes. 3757 * @param allowIntersect Whether to consider the textfield/textarea on 3758 * screen if it only intersects the screen (as opposed to being 3759 * completely on screen). 3760 * @return boolean True if the textfield/textarea is still on screen and the 3761 * dimensions/location of WebTextView have been updated. 3762 */ 3763 private boolean didUpdateWebTextViewDimensions(boolean allowIntersect) { 3764 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3765 Rect vBox = contentToViewRect(contentBounds); 3766 Rect visibleRect = new Rect(); 3767 calcOurVisibleRect(visibleRect); 3768 // If the textfield is on screen, place the WebTextView in 3769 // its new place, accounting for our new scroll/zoom values, 3770 // and adjust its textsize. 3771 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3772 : visibleRect.contains(vBox)) { 3773 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3774 vBox.height()); 3775 mWebTextView.updateTextSize(); 3776 updateWebTextViewPadding(); 3777 return true; 3778 } else { 3779 // The textfield is now off screen. The user probably 3780 // was not zooming to see the textfield better. Remove 3781 // the WebTextView. If the user types a key, and the 3782 // textfield is still in focus, we will reconstruct 3783 // the WebTextView and scroll it back on screen. 3784 mWebTextView.remove(); 3785 return false; 3786 } 3787 } 3788 3789 void setBaseLayer(int layer, Rect invalRect) { 3790 if (mNativeClass == 0) 3791 return; 3792 if (invalRect == null) { 3793 Rect rect = new Rect(0, 0, mContentWidth, mContentHeight); 3794 nativeSetBaseLayer(layer, rect); 3795 } else { 3796 nativeSetBaseLayer(layer, invalRect); 3797 } 3798 } 3799 3800 private void onZoomAnimationStart() { 3801 // If it is in password mode, turn it off so it does not draw misplaced. 3802 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3803 mWebTextView.setInPassword(false); 3804 } 3805 } 3806 3807 private void onZoomAnimationEnd() { 3808 // adjust the edit text view if needed 3809 if (inEditingMode() && didUpdateWebTextViewDimensions(false) 3810 && nativeFocusCandidateIsPassword()) { 3811 // If it is a password field, start drawing the WebTextView once 3812 // again. 3813 mWebTextView.setInPassword(true); 3814 } 3815 } 3816 3817 void onFixedLengthZoomAnimationStart() { 3818 WebViewCore.pauseUpdatePicture(getWebViewCore()); 3819 onZoomAnimationStart(); 3820 } 3821 3822 void onFixedLengthZoomAnimationEnd() { 3823 if (!mSelectingText) { 3824 WebViewCore.resumeUpdatePicture(mWebViewCore); 3825 } 3826 onZoomAnimationEnd(); 3827 } 3828 3829 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 3830 Paint.DITHER_FLAG | 3831 Paint.SUBPIXEL_TEXT_FLAG; 3832 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 3833 Paint.DITHER_FLAG; 3834 3835 private final DrawFilter mZoomFilter = 3836 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 3837 // If we need to trade better quality for speed, set mScrollFilter to null 3838 private final DrawFilter mScrollFilter = 3839 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 3840 3841 private void drawCoreAndCursorRing(Canvas canvas, int color, 3842 boolean drawCursorRing) { 3843 if (mDrawHistory) { 3844 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3845 canvas.drawPicture(mHistoryPicture); 3846 return; 3847 } 3848 if (mNativeClass == 0) return; 3849 3850 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 3851 boolean animateScroll = ((!mScroller.isFinished() 3852 || mVelocityTracker != null) 3853 && (mTouchMode != TOUCH_DRAG_MODE || 3854 mHeldMotionless != MOTIONLESS_TRUE)) 3855 || mDeferTouchMode == TOUCH_DRAG_MODE; 3856 if (mTouchMode == TOUCH_DRAG_MODE) { 3857 if (mHeldMotionless == MOTIONLESS_PENDING) { 3858 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3859 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3860 mHeldMotionless = MOTIONLESS_FALSE; 3861 } 3862 if (mHeldMotionless == MOTIONLESS_FALSE) { 3863 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3864 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3865 mHeldMotionless = MOTIONLESS_PENDING; 3866 } 3867 } 3868 if (animateZoom) { 3869 mZoomManager.animateZoom(canvas); 3870 } else { 3871 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3872 } 3873 3874 boolean UIAnimationsRunning = false; 3875 // Currently for each draw we compute the animation values; 3876 // We may in the future decide to do that independently. 3877 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3878 UIAnimationsRunning = true; 3879 // If we have unfinished (or unstarted) animations, 3880 // we ask for a repaint. 3881 invalidate(); 3882 } 3883 3884 // decide which adornments to draw 3885 int extras = DRAW_EXTRAS_NONE; 3886 if (DebugFlags.WEB_VIEW) { 3887 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 3888 + " mSelectingText=" + mSelectingText 3889 + " nativePageShouldHandleShiftAndArrows()=" 3890 + nativePageShouldHandleShiftAndArrows() 3891 + " animateZoom=" + animateZoom); 3892 } 3893 if (mFindIsUp) { 3894 extras = DRAW_EXTRAS_FIND; 3895 } else if (mSelectingText) { 3896 extras = DRAW_EXTRAS_SELECTION; 3897 nativeSetSelectionPointer(mDrawSelectionPointer, 3898 mZoomManager.getInvScale(), 3899 mSelectX, mSelectY - getTitleHeight()); 3900 } else if (drawCursorRing) { 3901 extras = DRAW_EXTRAS_CURSOR_RING; 3902 } 3903 3904 if (canvas.isHardwareAccelerated()) { 3905 try { 3906 if (canvas.acquireContext()) { 3907 Rect rect = new Rect(mGLRectViewport.left, 3908 mGLRectViewport.top, 3909 mGLRectViewport.right, 3910 mGLRectViewport.bottom 3911 - getVisibleTitleHeight()); 3912 if (nativeDrawGL(rect, getScale(), extras)) { 3913 invalidate(); 3914 } 3915 } 3916 } finally { 3917 canvas.releaseContext(); 3918 } 3919 } else { 3920 DrawFilter df = null; 3921 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 3922 df = mZoomFilter; 3923 } else if (animateScroll) { 3924 df = mScrollFilter; 3925 } 3926 canvas.setDrawFilter(df); 3927 int content = nativeDraw(canvas, color, extras, true); 3928 canvas.setDrawFilter(null); 3929 if (content != 0) { 3930 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 3931 } 3932 } 3933 3934 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3935 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3936 mTouchMode = TOUCH_SHORTPRESS_MODE; 3937 } 3938 } 3939 if (mFocusSizeChanged) { 3940 mFocusSizeChanged = false; 3941 // If we are zooming, this will get handled above, when the zoom 3942 // finishes. We also do not need to do this unless the WebTextView 3943 // is showing. 3944 if (!animateZoom && inEditingMode()) { 3945 didUpdateWebTextViewDimensions(true); 3946 } 3947 } 3948 } 3949 3950 // draw history 3951 private boolean mDrawHistory = false; 3952 private Picture mHistoryPicture = null; 3953 private int mHistoryWidth = 0; 3954 private int mHistoryHeight = 0; 3955 3956 // Only check the flag, can be called from WebCore thread 3957 boolean drawHistory() { 3958 return mDrawHistory; 3959 } 3960 3961 int getHistoryPictureWidth() { 3962 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 3963 } 3964 3965 // Should only be called in UI thread 3966 void switchOutDrawHistory() { 3967 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3968 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 3969 mDrawHistory = false; 3970 mHistoryPicture = null; 3971 invalidate(); 3972 int oldScrollX = mScrollX; 3973 int oldScrollY = mScrollY; 3974 mScrollX = pinLocX(mScrollX); 3975 mScrollY = pinLocY(mScrollY); 3976 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3977 mUserScroll = false; 3978 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3979 oldScrollY); 3980 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3981 } else { 3982 sendOurVisibleRect(); 3983 } 3984 } 3985 } 3986 3987 WebViewCore.CursorData cursorData() { 3988 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3989 result.mMoveGeneration = nativeMoveGeneration(); 3990 result.mFrame = nativeCursorFramePointer(); 3991 Point position = nativeCursorPosition(); 3992 result.mX = position.x; 3993 result.mY = position.y; 3994 return result; 3995 } 3996 3997 /** 3998 * Delete text from start to end in the focused textfield. If there is no 3999 * focus, or if start == end, silently fail. If start and end are out of 4000 * order, swap them. 4001 * @param start Beginning of selection to delete. 4002 * @param end End of selection to delete. 4003 */ 4004 /* package */ void deleteSelection(int start, int end) { 4005 mTextGeneration++; 4006 WebViewCore.TextSelectionData data 4007 = new WebViewCore.TextSelectionData(start, end); 4008 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4009 data); 4010 } 4011 4012 /** 4013 * Set the selection to (start, end) in the focused textfield. If start and 4014 * end are out of order, swap them. 4015 * @param start Beginning of selection. 4016 * @param end End of selection. 4017 */ 4018 /* package */ void setSelection(int start, int end) { 4019 if (mWebViewCore != null) { 4020 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4021 } 4022 } 4023 4024 @Override 4025 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4026 InputConnection connection = super.onCreateInputConnection(outAttrs); 4027 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4028 return connection; 4029 } 4030 4031 /** 4032 * Called in response to a message from webkit telling us that the soft 4033 * keyboard should be launched. 4034 */ 4035 private void displaySoftKeyboard(boolean isTextView) { 4036 InputMethodManager imm = (InputMethodManager) 4037 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4038 4039 // bring it back to the default level scale so that user can enter text 4040 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4041 if (zoom) { 4042 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4043 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4044 } 4045 if (isTextView) { 4046 rebuildWebTextView(); 4047 if (inEditingMode()) { 4048 imm.showSoftInput(mWebTextView, 0); 4049 if (zoom) { 4050 didUpdateWebTextViewDimensions(true); 4051 } 4052 return; 4053 } 4054 } 4055 // Used by plugins and contentEditable. 4056 // Also used if the navigation cache is out of date, and 4057 // does not recognize that a textfield is in focus. In that 4058 // case, use WebView as the targeted view. 4059 // see http://b/issue?id=2457459 4060 imm.showSoftInput(this, 0); 4061 } 4062 4063 // Called by WebKit to instruct the UI to hide the keyboard 4064 private void hideSoftKeyboard() { 4065 InputMethodManager imm = InputMethodManager.peekInstance(); 4066 if (imm != null && (imm.isActive(this) 4067 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4068 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4069 } 4070 } 4071 4072 /* 4073 * This method checks the current focus and cursor and potentially rebuilds 4074 * mWebTextView to have the appropriate properties, such as password, 4075 * multiline, and what text it contains. It also removes it if necessary. 4076 */ 4077 /* package */ void rebuildWebTextView() { 4078 // If the WebView does not have focus, do nothing until it gains focus. 4079 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4080 return; 4081 } 4082 boolean alreadyThere = inEditingMode(); 4083 // inEditingMode can only return true if mWebTextView is non-null, 4084 // so we can safely call remove() if (alreadyThere) 4085 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4086 if (alreadyThere) { 4087 mWebTextView.remove(); 4088 } 4089 return; 4090 } 4091 // At this point, we know we have found an input field, so go ahead 4092 // and create the WebTextView if necessary. 4093 if (mWebTextView == null) { 4094 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4095 // Initialize our generation number. 4096 mTextGeneration = 0; 4097 } 4098 mWebTextView.updateTextSize(); 4099 Rect visibleRect = new Rect(); 4100 calcOurContentVisibleRect(visibleRect); 4101 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4102 // should be in content coordinates. 4103 Rect bounds = nativeFocusCandidateNodeBounds(); 4104 Rect vBox = contentToViewRect(bounds); 4105 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4106 if (!Rect.intersects(bounds, visibleRect)) { 4107 mWebTextView.bringIntoView(); 4108 } 4109 String text = nativeFocusCandidateText(); 4110 int nodePointer = nativeFocusCandidatePointer(); 4111 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4112 // It is possible that we have the same textfield, but it has moved, 4113 // i.e. In the case of opening/closing the screen. 4114 // In that case, we need to set the dimensions, but not the other 4115 // aspects. 4116 // If the text has been changed by webkit, update it. However, if 4117 // there has been more UI text input, ignore it. We will receive 4118 // another update when that text is recognized. 4119 if (text != null && !text.equals(mWebTextView.getText().toString()) 4120 && nativeTextGeneration() == mTextGeneration) { 4121 mWebTextView.setTextAndKeepSelection(text); 4122 } 4123 } else { 4124 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4125 Gravity.RIGHT : Gravity.NO_GRAVITY); 4126 // This needs to be called before setType, which may call 4127 // requestFormData, and it needs to have the correct nodePointer. 4128 mWebTextView.setNodePointer(nodePointer); 4129 mWebTextView.setType(nativeFocusCandidateType()); 4130 updateWebTextViewPadding(); 4131 if (null == text) { 4132 if (DebugFlags.WEB_VIEW) { 4133 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4134 } 4135 text = ""; 4136 } 4137 mWebTextView.setTextAndKeepSelection(text); 4138 InputMethodManager imm = InputMethodManager.peekInstance(); 4139 if (imm != null && imm.isActive(mWebTextView)) { 4140 imm.restartInput(mWebTextView); 4141 } 4142 } 4143 if (isFocused()) { 4144 mWebTextView.requestFocus(); 4145 } 4146 } 4147 4148 /** 4149 * Update the padding of mWebTextView based on the native textfield/textarea 4150 */ 4151 void updateWebTextViewPadding() { 4152 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4153 if (paddingRect != null) { 4154 // Use contentToViewDimension since these are the dimensions of 4155 // the padding. 4156 mWebTextView.setPadding( 4157 contentToViewDimension(paddingRect.left), 4158 contentToViewDimension(paddingRect.top), 4159 contentToViewDimension(paddingRect.right), 4160 contentToViewDimension(paddingRect.bottom)); 4161 } 4162 } 4163 4164 /** 4165 * Tell webkit to put the cursor on screen. 4166 */ 4167 /* package */ void revealSelection() { 4168 if (mWebViewCore != null) { 4169 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4170 } 4171 } 4172 4173 /** 4174 * Called by WebTextView to find saved form data associated with the 4175 * textfield 4176 * @param name Name of the textfield. 4177 * @param nodePointer Pointer to the node of the textfield, so it can be 4178 * compared to the currently focused textfield when the data is 4179 * retrieved. 4180 * @param autoFillable true if WebKit has determined this field is part of 4181 * a form that can be auto filled. 4182 */ 4183 /* package */ void requestFormData(String name, int nodePointer, boolean autoFillable) { 4184 if (mWebViewCore.getSettings().getSaveFormData()) { 4185 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4186 update.arg1 = nodePointer; 4187 RequestFormData updater = new RequestFormData(name, getUrl(), 4188 update, autoFillable); 4189 Thread t = new Thread(updater); 4190 t.start(); 4191 } 4192 } 4193 4194 /** 4195 * Pass a message to find out the <label> associated with the <input> 4196 * identified by nodePointer 4197 * @param framePointer Pointer to the frame containing the <input> node 4198 * @param nodePointer Pointer to the node for which a <label> is desired. 4199 */ 4200 /* package */ void requestLabel(int framePointer, int nodePointer) { 4201 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4202 nodePointer); 4203 } 4204 4205 /* 4206 * This class requests an Adapter for the WebTextView which shows past 4207 * entries stored in the database. It is a Runnable so that it can be done 4208 * in its own thread, without slowing down the UI. 4209 */ 4210 private class RequestFormData implements Runnable { 4211 private String mName; 4212 private String mUrl; 4213 private Message mUpdateMessage; 4214 private boolean mAutoFillable; 4215 4216 public RequestFormData(String name, String url, Message msg, boolean autoFillable) { 4217 mName = name; 4218 mUrl = url; 4219 mUpdateMessage = msg; 4220 mAutoFillable = autoFillable; 4221 } 4222 4223 public void run() { 4224 ArrayList<String> pastEntries = new ArrayList(); 4225 4226 if (mAutoFillable) { 4227 // Note that code inside the adapter click handler in WebTextView depends 4228 // on the AutoFill item being at the top of the drop down list. If you change 4229 // the order, make sure to do it there too! 4230 WebSettings settings = getSettings(); 4231 if (settings != null && settings.getAutoFillProfile() != null) { 4232 pastEntries.add(getResources().getText( 4233 com.android.internal.R.string.autofill_this_form).toString() + 4234 " " + 4235 mAutoFillData.getPreviewString()); 4236 mWebTextView.setAutoFillProfileIsSet(true); 4237 } else { 4238 // There is no autofill profile set up yet, so add an option that 4239 // will invite the user to set their profile up. 4240 pastEntries.add(getResources().getText( 4241 com.android.internal.R.string.setup_autofill).toString()); 4242 mWebTextView.setAutoFillProfileIsSet(false); 4243 } 4244 } 4245 4246 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4247 4248 if (pastEntries.size() > 0) { 4249 AutoCompleteAdapter adapter = new 4250 AutoCompleteAdapter(mContext, pastEntries); 4251 mUpdateMessage.obj = adapter; 4252 mUpdateMessage.sendToTarget(); 4253 } 4254 } 4255 } 4256 4257 /** 4258 * Dump the display tree to "/sdcard/displayTree.txt" 4259 * 4260 * @hide debug only 4261 */ 4262 public void dumpDisplayTree() { 4263 nativeDumpDisplayTree(getUrl()); 4264 } 4265 4266 /** 4267 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4268 * "/sdcard/domTree.txt" 4269 * 4270 * @hide debug only 4271 */ 4272 public void dumpDomTree(boolean toFile) { 4273 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4274 } 4275 4276 /** 4277 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4278 * to "/sdcard/renderTree.txt" 4279 * 4280 * @hide debug only 4281 */ 4282 public void dumpRenderTree(boolean toFile) { 4283 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4284 } 4285 4286 /** 4287 * Called by DRT on UI thread, need to proxy to WebCore thread. 4288 * 4289 * @hide debug only 4290 */ 4291 public void useMockDeviceOrientation() { 4292 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4293 } 4294 4295 /** 4296 * Called by DRT on WebCore thread. 4297 * 4298 * @hide debug only 4299 */ 4300 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4301 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4302 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4303 canProvideGamma, gamma); 4304 } 4305 4306 /** 4307 * Dump the V8 counters to standard output. 4308 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4309 * true. Otherwise, this will do nothing. 4310 * 4311 * @hide debug only 4312 */ 4313 public void dumpV8Counters() { 4314 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4315 } 4316 4317 // This is used to determine long press with the center key. Does not 4318 // affect long press with the trackball/touch. 4319 private boolean mGotCenterDown = false; 4320 4321 @Override 4322 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4323 // send complex characters to webkit for use by JS and plugins 4324 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4325 // pass the key to DOM 4326 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4327 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4328 // return true as DOM handles the key 4329 return true; 4330 } 4331 return false; 4332 } 4333 4334 @Override 4335 public boolean onKeyDown(int keyCode, KeyEvent event) { 4336 if (DebugFlags.WEB_VIEW) { 4337 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4338 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4339 } 4340 4341 if (mNativeClass == 0) { 4342 return false; 4343 } 4344 4345 // do this hack up front, so it always works, regardless of touch-mode 4346 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4347 mAutoRedraw = !mAutoRedraw; 4348 if (mAutoRedraw) { 4349 invalidate(); 4350 } 4351 return true; 4352 } 4353 4354 // Bubble up the key event if 4355 // 1. it is a system key; or 4356 // 2. the host application wants to handle it; 4357 // 3. the accessibility injector is present and wants to handle it; 4358 if (event.isSystem() 4359 || mCallbackProxy.uiOverrideKeyEvent(event) 4360 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4361 return false; 4362 } 4363 4364 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4365 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4366 if (!pageShouldHandleShiftAndArrows() && !nativeCursorWantsKeyEvents() 4367 && !mSelectingText) { 4368 setUpSelect(); 4369 } 4370 } 4371 4372 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4373 pageUp(false); 4374 return true; 4375 } 4376 4377 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4378 pageDown(false); 4379 return true; 4380 } 4381 4382 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4383 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4384 switchOutDrawHistory(); 4385 if (pageShouldHandleShiftAndArrows()) { 4386 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4387 return true; 4388 } 4389 if (mSelectingText) { 4390 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4391 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4392 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4393 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4394 int multiplier = event.getRepeatCount() + 1; 4395 moveSelection(xRate * multiplier, yRate * multiplier); 4396 return true; 4397 } 4398 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4399 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4400 return true; 4401 } 4402 // Bubble up the key event as WebView doesn't handle it 4403 return false; 4404 } 4405 4406 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4407 switchOutDrawHistory(); 4408 if (event.getRepeatCount() == 0) { 4409 if (mSelectingText) { 4410 return true; // discard press if copy in progress 4411 } 4412 mGotCenterDown = true; 4413 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4414 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4415 // Already checked mNativeClass, so we do not need to check it 4416 // again. 4417 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4418 return true; 4419 } 4420 // Bubble up the key event as WebView doesn't handle it 4421 return false; 4422 } 4423 4424 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 4425 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 4426 // turn off copy select if a shift-key combo is pressed 4427 selectionDone(); 4428 } 4429 4430 if (getSettings().getNavDump()) { 4431 switch (keyCode) { 4432 case KeyEvent.KEYCODE_4: 4433 dumpDisplayTree(); 4434 break; 4435 case KeyEvent.KEYCODE_5: 4436 case KeyEvent.KEYCODE_6: 4437 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4438 break; 4439 case KeyEvent.KEYCODE_7: 4440 case KeyEvent.KEYCODE_8: 4441 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4442 break; 4443 case KeyEvent.KEYCODE_9: 4444 nativeInstrumentReport(); 4445 return true; 4446 } 4447 } 4448 4449 if (nativeCursorIsTextInput()) { 4450 // This message will put the node in focus, for the DOM's notion 4451 // of focus, and make the focuscontroller active 4452 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 4453 nativeCursorNodePointer()); 4454 // This will bring up the WebTextView and put it in focus, for 4455 // our view system's notion of focus 4456 rebuildWebTextView(); 4457 // Now we need to pass the event to it 4458 if (inEditingMode()) { 4459 mWebTextView.setDefaultSelection(); 4460 return mWebTextView.dispatchKeyEvent(event); 4461 } 4462 } else if (nativeHasFocusNode()) { 4463 // In this case, the cursor is not on a text input, but the focus 4464 // might be. Check it, and if so, hand over to the WebTextView. 4465 rebuildWebTextView(); 4466 if (inEditingMode()) { 4467 mWebTextView.setDefaultSelection(); 4468 return mWebTextView.dispatchKeyEvent(event); 4469 } 4470 } 4471 4472 // TODO: should we pass all the keys to DOM or check the meta tag 4473 if (nativeCursorWantsKeyEvents() || true) { 4474 // pass the key to DOM 4475 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4476 // return true as DOM handles the key 4477 return true; 4478 } 4479 4480 // Bubble up the key event as WebView doesn't handle it 4481 return false; 4482 } 4483 4484 @Override 4485 public boolean onKeyUp(int keyCode, KeyEvent event) { 4486 if (DebugFlags.WEB_VIEW) { 4487 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4488 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4489 } 4490 4491 if (mNativeClass == 0) { 4492 return false; 4493 } 4494 4495 // special CALL handling when cursor node's href is "tel:XXX" 4496 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4497 String text = nativeCursorText(); 4498 if (!nativeCursorIsTextInput() && text != null 4499 && text.startsWith(SCHEME_TEL)) { 4500 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4501 getContext().startActivity(intent); 4502 return true; 4503 } 4504 } 4505 4506 // Bubble up the key event if 4507 // 1. it is a system key; or 4508 // 2. the host application wants to handle it; 4509 // 3. the accessibility injector is present and wants to handle it; 4510 if (event.isSystem() 4511 || mCallbackProxy.uiOverrideKeyEvent(event) 4512 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4513 return false; 4514 } 4515 4516 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4517 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4518 if (!pageShouldHandleShiftAndArrows() && copySelection()) { 4519 selectionDone(); 4520 return true; 4521 } 4522 } 4523 4524 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4525 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4526 if (pageShouldHandleShiftAndArrows()) { 4527 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4528 return true; 4529 } 4530 // always handle the navigation keys in the UI thread 4531 // Bubble up the key event as WebView doesn't handle it 4532 return false; 4533 } 4534 4535 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4536 // remove the long press message first 4537 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4538 mGotCenterDown = false; 4539 4540 if (mSelectingText) { 4541 if (mExtendSelection) { 4542 copySelection(); 4543 selectionDone(); 4544 } else { 4545 mExtendSelection = true; 4546 nativeSetExtendSelection(); 4547 invalidate(); // draw the i-beam instead of the arrow 4548 } 4549 return true; // discard press if copy in progress 4550 } 4551 4552 // perform the single click 4553 Rect visibleRect = sendOurVisibleRect(); 4554 // Note that sendOurVisibleRect calls viewToContent, so the 4555 // coordinates should be in content coordinates. 4556 if (!nativeCursorIntersects(visibleRect)) { 4557 return false; 4558 } 4559 WebViewCore.CursorData data = cursorData(); 4560 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4561 playSoundEffect(SoundEffectConstants.CLICK); 4562 if (nativeCursorIsTextInput()) { 4563 rebuildWebTextView(); 4564 centerKeyPressOnTextField(); 4565 if (inEditingMode()) { 4566 mWebTextView.setDefaultSelection(); 4567 } 4568 return true; 4569 } 4570 clearTextEntry(); 4571 nativeShowCursorTimed(); 4572 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4573 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4574 nativeCursorNodePointer()); 4575 } 4576 return true; 4577 } 4578 4579 // TODO: should we pass all the keys to DOM or check the meta tag 4580 if (nativeCursorWantsKeyEvents() || true) { 4581 // pass the key to DOM 4582 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4583 // return true as DOM handles the key 4584 return true; 4585 } 4586 4587 // Bubble up the key event as WebView doesn't handle it 4588 return false; 4589 } 4590 4591 private void setUpSelect() { 4592 if (0 == mNativeClass) return; // client isn't initialized 4593 if (inFullScreenMode()) return; 4594 if (mSelectingText) return; 4595 mExtendSelection = false; 4596 mSelectingText = mDrawSelectionPointer = true; 4597 // don't let the picture change during text selection 4598 WebViewCore.pauseUpdatePicture(mWebViewCore); 4599 nativeResetSelection(); 4600 if (nativeHasCursorNode()) { 4601 Rect rect = nativeCursorNodeBounds(); 4602 mSelectX = contentToViewX(rect.left); 4603 mSelectY = contentToViewY(rect.top); 4604 } else if (mLastTouchY > getVisibleTitleHeight()) { 4605 mSelectX = mScrollX + (int) mLastTouchX; 4606 mSelectY = mScrollY + (int) mLastTouchY; 4607 } else { 4608 mSelectX = mScrollX + getViewWidth() / 2; 4609 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4610 } 4611 nativeHideCursor(); 4612 mSelectCallback = new SelectActionModeCallback(); 4613 mSelectCallback.setWebView(this); 4614 View titleBar = mTitleBar; 4615 // We do not want to show the embedded title bar during find or 4616 // select, but keep track of it so that it can be replaced when the 4617 // mode is exited. 4618 setEmbeddedTitleBar(null); 4619 mSelectCallback.setTitleBar(titleBar); 4620 startActionMode(mSelectCallback); 4621 } 4622 4623 /** 4624 * Use this method to put the WebView into text selection mode. 4625 * Do not rely on this functionality; it will be deprecated in the future. 4626 */ 4627 public void emulateShiftHeld() { 4628 setUpSelect(); 4629 } 4630 4631 /** 4632 * Select all of the text in this WebView. 4633 */ 4634 void selectAll() { 4635 if (0 == mNativeClass) return; // client isn't initialized 4636 if (inFullScreenMode()) return; 4637 if (!mSelectingText) setUpSelect(); 4638 nativeSelectAll(); 4639 mDrawSelectionPointer = false; 4640 mExtendSelection = true; 4641 invalidate(); 4642 } 4643 4644 /** 4645 * Called when the selection has been removed. 4646 */ 4647 void selectionDone() { 4648 if (mSelectingText) { 4649 mSelectingText = false; 4650 // finish is idempotent, so this is fine even if selectionDone was 4651 // called by mSelectCallback.onDestroyActionMode 4652 mSelectCallback.finish(); 4653 mSelectCallback = null; 4654 WebViewCore.resumePriority(); 4655 WebViewCore.resumeUpdatePicture(mWebViewCore); 4656 invalidate(); // redraw without selection 4657 } 4658 } 4659 4660 /** 4661 * Copy the selection to the clipboard 4662 */ 4663 boolean copySelection() { 4664 boolean copiedSomething = false; 4665 String selection = getSelection(); 4666 if (selection != "") { 4667 if (DebugFlags.WEB_VIEW) { 4668 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4669 } 4670 Toast.makeText(mContext 4671 , com.android.internal.R.string.text_copied 4672 , Toast.LENGTH_SHORT).show(); 4673 copiedSomething = true; 4674 ClipboardManager cm = (ClipboardManager)getContext() 4675 .getSystemService(Context.CLIPBOARD_SERVICE); 4676 cm.setText(selection); 4677 } 4678 invalidate(); // remove selection region and pointer 4679 return copiedSomething; 4680 } 4681 4682 /** 4683 * Returns the currently highlighted text as a string. 4684 */ 4685 String getSelection() { 4686 if (mNativeClass == 0) return ""; 4687 return nativeGetSelection(); 4688 } 4689 4690 @Override 4691 protected void onAttachedToWindow() { 4692 super.onAttachedToWindow(); 4693 if (hasWindowFocus()) setActive(true); 4694 } 4695 4696 @Override 4697 protected void onDetachedFromWindow() { 4698 clearHelpers(); 4699 mZoomManager.dismissZoomPicker(); 4700 if (hasWindowFocus()) setActive(false); 4701 super.onDetachedFromWindow(); 4702 } 4703 4704 @Override 4705 protected void onVisibilityChanged(View changedView, int visibility) { 4706 super.onVisibilityChanged(changedView, visibility); 4707 // The zoomManager may be null if the webview is created from XML that 4708 // specifies the view's visibility param as not visible (see http://b/2794841) 4709 if (visibility != View.VISIBLE && mZoomManager != null) { 4710 mZoomManager.dismissZoomPicker(); 4711 } 4712 } 4713 4714 /** 4715 * @deprecated WebView no longer needs to implement 4716 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4717 */ 4718 @Deprecated 4719 public void onChildViewAdded(View parent, View child) {} 4720 4721 /** 4722 * @deprecated WebView no longer needs to implement 4723 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4724 */ 4725 @Deprecated 4726 public void onChildViewRemoved(View p, View child) {} 4727 4728 /** 4729 * @deprecated WebView should not have implemented 4730 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4731 * does nothing now. 4732 */ 4733 @Deprecated 4734 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4735 } 4736 4737 private void setActive(boolean active) { 4738 if (active) { 4739 if (hasFocus()) { 4740 // If our window regained focus, and we have focus, then begin 4741 // drawing the cursor ring 4742 mDrawCursorRing = true; 4743 setFocusControllerActive(true); 4744 if (mNativeClass != 0) { 4745 nativeRecordButtons(true, false, true); 4746 } 4747 } else { 4748 if (!inEditingMode()) { 4749 // If our window gained focus, but we do not have it, do not 4750 // draw the cursor ring. 4751 mDrawCursorRing = false; 4752 setFocusControllerActive(false); 4753 } 4754 // We do not call nativeRecordButtons here because we assume 4755 // that when we lost focus, or window focus, it got called with 4756 // false for the first parameter 4757 } 4758 } else { 4759 if (!mZoomManager.isZoomPickerVisible()) { 4760 /* 4761 * The external zoom controls come in their own window, so our 4762 * window loses focus. Our policy is to not draw the cursor ring 4763 * if our window is not focused, but this is an exception since 4764 * the user can still navigate the web page with the zoom 4765 * controls showing. 4766 */ 4767 mDrawCursorRing = false; 4768 } 4769 mGotKeyDown = false; 4770 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4771 mTouchMode = TOUCH_DONE_MODE; 4772 if (mNativeClass != 0) { 4773 nativeRecordButtons(false, false, true); 4774 } 4775 setFocusControllerActive(false); 4776 } 4777 invalidate(); 4778 } 4779 4780 // To avoid drawing the cursor ring, and remove the TextView when our window 4781 // loses focus. 4782 @Override 4783 public void onWindowFocusChanged(boolean hasWindowFocus) { 4784 setActive(hasWindowFocus); 4785 if (hasWindowFocus) { 4786 JWebCoreJavaBridge.setActiveWebView(this); 4787 } else { 4788 JWebCoreJavaBridge.removeActiveWebView(this); 4789 } 4790 super.onWindowFocusChanged(hasWindowFocus); 4791 } 4792 4793 /* 4794 * Pass a message to WebCore Thread, telling the WebCore::Page's 4795 * FocusController to be "inactive" so that it will 4796 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4797 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4798 */ 4799 /* package */ void setFocusControllerActive(boolean active) { 4800 if (mWebViewCore == null) return; 4801 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 4802 } 4803 4804 @Override 4805 protected void onFocusChanged(boolean focused, int direction, 4806 Rect previouslyFocusedRect) { 4807 if (DebugFlags.WEB_VIEW) { 4808 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4809 } 4810 if (focused) { 4811 // When we regain focus, if we have window focus, resume drawing 4812 // the cursor ring 4813 if (hasWindowFocus()) { 4814 mDrawCursorRing = true; 4815 if (mNativeClass != 0) { 4816 nativeRecordButtons(true, false, true); 4817 } 4818 setFocusControllerActive(true); 4819 //} else { 4820 // The WebView has gained focus while we do not have 4821 // windowfocus. When our window lost focus, we should have 4822 // called nativeRecordButtons(false...) 4823 } 4824 } else { 4825 // When we lost focus, unless focus went to the TextView (which is 4826 // true if we are in editing mode), stop drawing the cursor ring. 4827 if (!inEditingMode()) { 4828 mDrawCursorRing = false; 4829 if (mNativeClass != 0) { 4830 nativeRecordButtons(false, false, true); 4831 } 4832 setFocusControllerActive(false); 4833 } 4834 mGotKeyDown = false; 4835 } 4836 4837 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4838 } 4839 4840 void setGLRectViewport() { 4841 View window = getRootView(); 4842 int[] location = new int[2]; 4843 getLocationInWindow(location); 4844 mGLRectViewport = new Rect(location[0], window.getHeight() 4845 - (location[1] + getHeight()), 4846 location[0] + getWidth(), 4847 window.getHeight() - location[1]); 4848 } 4849 4850 /** 4851 * @hide 4852 */ 4853 @Override 4854 protected boolean setFrame(int left, int top, int right, int bottom) { 4855 boolean changed = super.setFrame(left, top, right, bottom); 4856 if (!changed && mHeightCanMeasure) { 4857 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4858 // in WebViewCore after we get the first layout. We do call 4859 // requestLayout() when we get contentSizeChanged(). But the View 4860 // system won't call onSizeChanged if the dimension is not changed. 4861 // In this case, we need to call sendViewSizeZoom() explicitly to 4862 // notify the WebKit about the new dimensions. 4863 sendViewSizeZoom(false); 4864 } 4865 setGLRectViewport(); 4866 return changed; 4867 } 4868 4869 @Override 4870 protected void onSizeChanged(int w, int h, int ow, int oh) { 4871 super.onSizeChanged(w, h, ow, oh); 4872 4873 // adjust the max viewport width depending on the view dimensions. This 4874 // is to ensure the scaling is not going insane. So do not shrink it if 4875 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4876 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 4877 if (newMaxViewportWidth > sMaxViewportWidth) { 4878 sMaxViewportWidth = newMaxViewportWidth; 4879 } 4880 4881 mZoomManager.onSizeChanged(w, h, ow, oh); 4882 } 4883 4884 @Override 4885 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4886 super.onScrollChanged(l, t, oldl, oldt); 4887 if (!mInOverScrollMode) { 4888 sendOurVisibleRect(); 4889 // update WebKit if visible title bar height changed. The logic is same 4890 // as getVisibleTitleHeight. 4891 int titleHeight = getTitleHeight(); 4892 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4893 sendViewSizeZoom(false); 4894 } 4895 } 4896 } 4897 4898 @Override 4899 public boolean dispatchKeyEvent(KeyEvent event) { 4900 boolean dispatch = true; 4901 4902 // Textfields, plugins, and contentEditable nodes need to receive the 4903 // shift up key even if another key was released while the shift key 4904 // was held down. 4905 if (!inEditingMode() && (mNativeClass == 0 4906 || !nativePageShouldHandleShiftAndArrows())) { 4907 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4908 mGotKeyDown = true; 4909 } else { 4910 if (!mGotKeyDown) { 4911 /* 4912 * We got a key up for which we were not the recipient of 4913 * the original key down. Don't give it to the view. 4914 */ 4915 dispatch = false; 4916 } 4917 mGotKeyDown = false; 4918 } 4919 } 4920 4921 if (dispatch) { 4922 return super.dispatchKeyEvent(event); 4923 } else { 4924 // We didn't dispatch, so let something else handle the key 4925 return false; 4926 } 4927 } 4928 4929 // Here are the snap align logic: 4930 // 1. If it starts nearly horizontally or vertically, snap align; 4931 // 2. If there is a dramitic direction change, let it go; 4932 // 3. If there is a same direction back and forth, lock it. 4933 4934 // adjustable parameters 4935 private int mMinLockSnapReverseDistance; 4936 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4937 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4938 4939 private boolean hitFocusedPlugin(int contentX, int contentY) { 4940 if (DebugFlags.WEB_VIEW) { 4941 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4942 Rect r = nativeFocusNodeBounds(); 4943 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4944 + ", " + r.right + ", " + r.bottom + ")"); 4945 } 4946 return nativeFocusIsPlugin() 4947 && nativeFocusNodeBounds().contains(contentX, contentY); 4948 } 4949 4950 private boolean shouldForwardTouchEvent() { 4951 return mFullScreenHolder != null || (mForwardTouchEvents 4952 && !mSelectingText 4953 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4954 } 4955 4956 private boolean inFullScreenMode() { 4957 return mFullScreenHolder != null; 4958 } 4959 4960 private void dismissFullScreenMode() { 4961 if (inFullScreenMode()) { 4962 mFullScreenHolder.dismiss(); 4963 mFullScreenHolder = null; 4964 } 4965 } 4966 4967 void onPinchToZoomAnimationStart() { 4968 // cancel the single touch handling 4969 cancelTouch(); 4970 onZoomAnimationStart(); 4971 } 4972 4973 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 4974 onZoomAnimationEnd(); 4975 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 4976 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 4977 // as it may trigger the unwanted fling. 4978 mTouchMode = TOUCH_PINCH_DRAG; 4979 mConfirmMove = true; 4980 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 4981 } 4982 4983 private void startScrollingLayer(float gestureX, float gestureY) { 4984 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4985 int contentX = viewToContentX((int) gestureX + mScrollX); 4986 int contentY = viewToContentY((int) gestureY + mScrollY); 4987 mScrollingLayer = nativeScrollableLayer(contentX, contentY); 4988 if (mScrollingLayer != 0) { 4989 mTouchMode = TOUCH_DRAG_LAYER_MODE; 4990 } 4991 } 4992 } 4993 4994 // 1/(density * density) used to compute the distance between points. 4995 // Computed in init(). 4996 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 4997 4998 // The distance between two points reported in onTouchEvent scaled by the 4999 // density of the screen. 5000 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5001 5002 @Override 5003 public boolean onTouchEvent(MotionEvent ev) { 5004 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5005 return false; 5006 } 5007 5008 if (DebugFlags.WEB_VIEW) { 5009 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5010 + " mTouchMode=" + mTouchMode 5011 + " numPointers=" + ev.getPointerCount()); 5012 } 5013 5014 int action = ev.getAction(); 5015 float x = ev.getX(); 5016 float y = ev.getY(); 5017 long eventTime = ev.getEventTime(); 5018 5019 final ScaleGestureDetector detector = 5020 mZoomManager.getMultiTouchGestureDetector(); 5021 boolean isScrollGesture = false; 5022 // Set to the mid-point of a two-finger gesture used to detect if the 5023 // user has touched a layer. 5024 float gestureX = x; 5025 float gestureY = y; 5026 if (detector == null || !detector.isInProgress()) { 5027 // The gesture for scrolling a layer is two fingers close together. 5028 // FIXME: we may consider giving WebKit an option to handle 5029 // multi-touch events later. 5030 if (ev.getPointerCount() > 1) { 5031 float dx = ev.getX(1) - ev.getX(0); 5032 float dy = ev.getY(1) - ev.getY(0); 5033 float dist = (dx * dx + dy * dy) * 5034 DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5035 // Use the approximate center to determine if the gesture is in 5036 // a layer. 5037 gestureX = ev.getX(0) + (dx * .5f); 5038 gestureY = ev.getY(0) + (dy * .5f); 5039 // Now use a consistent point for tracking movement. 5040 if (ev.getX(0) < ev.getX(1)) { 5041 x = ev.getX(0); 5042 y = ev.getY(0); 5043 } else { 5044 x = ev.getX(1); 5045 y = ev.getY(1); 5046 } 5047 action = ev.getActionMasked(); 5048 if (dist < DRAG_LAYER_FINGER_DISTANCE) { 5049 isScrollGesture = true; 5050 } else if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5051 // Fingers moved too far apart while dragging, the user 5052 // might be trying to zoom. 5053 mTouchMode = TOUCH_INIT_MODE; 5054 } 5055 } 5056 } 5057 5058 // If the page disallows zoom, pass multi-touch events to webkit. 5059 // mDeferMultitouch is a hack for layout tests, where it is used to 5060 // force passing multi-touch events to webkit. 5061 // FIXME: always pass multi-touch events to webkit and remove everything 5062 // related to mDeferMultitouch. 5063 if (ev.getPointerCount() > 1 && 5064 (mDeferMultitouch || (!isScrollGesture && mZoomManager.isZoomScaleFixed()))) { 5065 if (DebugFlags.WEB_VIEW) { 5066 Log.v(LOGTAG, "passing " + ev.getPointerCount() + " points to webkit"); 5067 } 5068 passMultiTouchToWebKit(ev); 5069 return true; 5070 } 5071 5072 if (mZoomManager.supportsMultiTouchZoom() && ev.getPointerCount() > 1 && 5073 mTouchMode != TOUCH_DRAG_LAYER_MODE && !isScrollGesture) { 5074 if (!detector.isInProgress() && 5075 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 5076 // Insert a fake pointer down event in order to start 5077 // the zoom scale detector. 5078 MotionEvent temp = MotionEvent.obtain(ev); 5079 // Clear the original event and set it to 5080 // ACTION_POINTER_DOWN. 5081 try { 5082 temp.setAction(temp.getAction() & 5083 ~MotionEvent.ACTION_MASK | 5084 MotionEvent.ACTION_POINTER_DOWN); 5085 detector.onTouchEvent(temp); 5086 } finally { 5087 temp.recycle(); 5088 } 5089 } 5090 5091 detector.onTouchEvent(ev); 5092 5093 if (detector.isInProgress()) { 5094 mLastTouchTime = eventTime; 5095 cancelLongPress(); 5096 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5097 if (!mZoomManager.supportsPanDuringZoom()) { 5098 return true; 5099 } 5100 mTouchMode = TOUCH_DRAG_MODE; 5101 if (mVelocityTracker == null) { 5102 mVelocityTracker = VelocityTracker.obtain(); 5103 } 5104 } 5105 5106 x = detector.getFocusX(); 5107 y = detector.getFocusY(); 5108 action = ev.getAction() & MotionEvent.ACTION_MASK; 5109 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5110 cancelTouch(); 5111 action = MotionEvent.ACTION_DOWN; 5112 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5113 // set mLastTouchX/Y to the remaining point 5114 mLastTouchX = x; 5115 mLastTouchY = y; 5116 } else if (action == MotionEvent.ACTION_MOVE) { 5117 // negative x or y indicate it is on the edge, skip it. 5118 if (x < 0 || y < 0) { 5119 return true; 5120 } 5121 } 5122 } 5123 5124 // Due to the touch screen edge effect, a touch closer to the edge 5125 // always snapped to the edge. As getViewWidth() can be different from 5126 // getWidth() due to the scrollbar, adjusting the point to match 5127 // getViewWidth(). Same applied to the height. 5128 x = Math.min(x, getViewWidth() - 1); 5129 y = Math.min(y, getViewHeightWithTitle() - 1); 5130 5131 float fDeltaX = mLastTouchX - x; 5132 float fDeltaY = mLastTouchY - y; 5133 int deltaX = (int) fDeltaX; 5134 int deltaY = (int) fDeltaY; 5135 int contentX = viewToContentX((int) x + mScrollX); 5136 int contentY = viewToContentY((int) y + mScrollY); 5137 5138 switch (action) { 5139 case MotionEvent.ACTION_DOWN: { 5140 mPreventDefault = PREVENT_DEFAULT_NO; 5141 mConfirmMove = false; 5142 if (!mScroller.isFinished()) { 5143 // stop the current scroll animation, but if this is 5144 // the start of a fling, allow it to add to the current 5145 // fling's velocity 5146 mScroller.abortAnimation(); 5147 mTouchMode = TOUCH_DRAG_START_MODE; 5148 mConfirmMove = true; 5149 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5150 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5151 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5152 if (getSettings().supportTouchOnly()) { 5153 removeTouchHighlight(true); 5154 } 5155 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5156 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5157 } else { 5158 // commit the short press action for the previous tap 5159 doShortPress(); 5160 mTouchMode = TOUCH_INIT_MODE; 5161 mDeferTouchProcess = (!inFullScreenMode() 5162 && mForwardTouchEvents) ? hitFocusedPlugin( 5163 contentX, contentY) : false; 5164 } 5165 } else { // the normal case 5166 mTouchMode = TOUCH_INIT_MODE; 5167 mDeferTouchProcess = (!inFullScreenMode() 5168 && mForwardTouchEvents) ? hitFocusedPlugin( 5169 contentX, contentY) : false; 5170 mWebViewCore.sendMessage( 5171 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5172 if (getSettings().supportTouchOnly()) { 5173 TouchHighlightData data = new TouchHighlightData(); 5174 data.mX = contentX; 5175 data.mY = contentY; 5176 data.mSlop = viewToContentDimension(mNavSlop); 5177 mWebViewCore.sendMessageDelayed( 5178 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5179 ViewConfiguration.getTapTimeout()); 5180 if (DEBUG_TOUCH_HIGHLIGHT) { 5181 if (getSettings().getNavDump()) { 5182 mTouchHighlightX = (int) x + mScrollX; 5183 mTouchHighlightY = (int) y + mScrollY; 5184 mPrivateHandler.postDelayed(new Runnable() { 5185 public void run() { 5186 mTouchHighlightX = mTouchHighlightY = 0; 5187 invalidate(); 5188 } 5189 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5190 } 5191 } 5192 } 5193 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5194 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5195 (eventTime - mLastTouchUpTime), eventTime); 5196 } 5197 if (mSelectingText) { 5198 mDrawSelectionPointer = false; 5199 mSelectionStarted = nativeStartSelection(contentX, contentY); 5200 if (DebugFlags.WEB_VIEW) { 5201 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5202 } 5203 invalidate(); 5204 } 5205 } 5206 // Trigger the link 5207 if (mTouchMode == TOUCH_INIT_MODE 5208 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5209 mPrivateHandler.sendEmptyMessageDelayed( 5210 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5211 mPrivateHandler.sendEmptyMessageDelayed( 5212 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5213 if (inFullScreenMode() || mDeferTouchProcess) { 5214 mPreventDefault = PREVENT_DEFAULT_YES; 5215 } else if (mForwardTouchEvents) { 5216 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5217 } else { 5218 mPreventDefault = PREVENT_DEFAULT_NO; 5219 } 5220 // pass the touch events from UI thread to WebCore thread 5221 if (shouldForwardTouchEvent()) { 5222 TouchEventData ted = new TouchEventData(); 5223 ted.mAction = action; 5224 ted.mPoints = new Point[1]; 5225 ted.mPoints[0] = new Point(contentX, contentY); 5226 ted.mMetaState = ev.getMetaState(); 5227 ted.mReprocess = mDeferTouchProcess; 5228 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5229 if (mDeferTouchProcess) { 5230 // still needs to set them for compute deltaX/Y 5231 mLastTouchX = x; 5232 mLastTouchY = y; 5233 break; 5234 } 5235 if (!inFullScreenMode()) { 5236 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5237 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5238 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5239 action, 0), TAP_TIMEOUT); 5240 } 5241 } 5242 } 5243 startTouch(x, y, eventTime); 5244 break; 5245 } 5246 case MotionEvent.ACTION_MOVE: { 5247 boolean firstMove = false; 5248 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5249 >= mTouchSlopSquare) { 5250 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5251 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5252 mConfirmMove = true; 5253 firstMove = true; 5254 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5255 mTouchMode = TOUCH_INIT_MODE; 5256 } 5257 if (getSettings().supportTouchOnly()) { 5258 removeTouchHighlight(true); 5259 } 5260 } 5261 // pass the touch events from UI thread to WebCore thread 5262 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5263 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5264 TouchEventData ted = new TouchEventData(); 5265 ted.mAction = action; 5266 ted.mPoints = new Point[1]; 5267 ted.mPoints[0] = new Point(contentX, contentY); 5268 ted.mMetaState = ev.getMetaState(); 5269 ted.mReprocess = mDeferTouchProcess; 5270 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5271 mLastSentTouchTime = eventTime; 5272 if (mDeferTouchProcess) { 5273 break; 5274 } 5275 if (firstMove && !inFullScreenMode()) { 5276 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5277 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5278 action, 0), TAP_TIMEOUT); 5279 } 5280 } 5281 if (mTouchMode == TOUCH_DONE_MODE 5282 || mPreventDefault == PREVENT_DEFAULT_YES) { 5283 // no dragging during scroll zoom animation, or when prevent 5284 // default is yes 5285 break; 5286 } 5287 if (mVelocityTracker == null) { 5288 Log.e(LOGTAG, "Got null mVelocityTracker when " 5289 + "mPreventDefault = " + mPreventDefault 5290 + " mDeferTouchProcess = " + mDeferTouchProcess 5291 + " mTouchMode = " + mTouchMode); 5292 } 5293 mVelocityTracker.addMovement(ev); 5294 if (mSelectingText && mSelectionStarted) { 5295 if (DebugFlags.WEB_VIEW) { 5296 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5297 } 5298 ViewParent parent = getParent(); 5299 if (parent != null) { 5300 parent.requestDisallowInterceptTouchEvent(true); 5301 } 5302 nativeExtendSelection(contentX, contentY); 5303 invalidate(); 5304 break; 5305 } 5306 5307 if (mTouchMode != TOUCH_DRAG_MODE && 5308 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5309 5310 if (!mConfirmMove) { 5311 break; 5312 } 5313 5314 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5315 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5316 // track mLastTouchTime as we may need to do fling at 5317 // ACTION_UP 5318 mLastTouchTime = eventTime; 5319 break; 5320 } 5321 5322 // Only lock dragging to one axis if we don't have a scale in progress. 5323 // Scaling implies free-roaming movement. Note this is only ever a question 5324 // if mZoomManager.supportsPanDuringZoom() is true. 5325 if (detector != null && !detector.isInProgress()) { 5326 // if it starts nearly horizontal or vertical, enforce it 5327 int ax = Math.abs(deltaX); 5328 int ay = Math.abs(deltaY); 5329 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5330 mSnapScrollMode = SNAP_X; 5331 mSnapPositive = deltaX > 0; 5332 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5333 mSnapScrollMode = SNAP_Y; 5334 mSnapPositive = deltaY > 0; 5335 } 5336 } 5337 5338 mTouchMode = TOUCH_DRAG_MODE; 5339 mLastTouchX = x; 5340 mLastTouchY = y; 5341 fDeltaX = 0.0f; 5342 fDeltaY = 0.0f; 5343 deltaX = 0; 5344 deltaY = 0; 5345 5346 if (isScrollGesture) { 5347 startScrollingLayer(gestureX, gestureY); 5348 } 5349 startDrag(); 5350 } 5351 5352 // do pan 5353 boolean done = false; 5354 boolean keepScrollBarsVisible = false; 5355 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5356 mLastTouchX = x; 5357 mLastTouchY = y; 5358 keepScrollBarsVisible = done = true; 5359 } else { 5360 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5361 int ax = Math.abs(deltaX); 5362 int ay = Math.abs(deltaY); 5363 if (mSnapScrollMode == SNAP_X) { 5364 // radical change means getting out of snap mode 5365 if (ay > MAX_SLOPE_FOR_DIAG * ax 5366 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5367 mSnapScrollMode = SNAP_NONE; 5368 } 5369 // reverse direction means lock in the snap mode 5370 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5371 (mSnapPositive 5372 ? deltaX < -mMinLockSnapReverseDistance 5373 : deltaX > mMinLockSnapReverseDistance)) { 5374 mSnapScrollMode |= SNAP_LOCK; 5375 } 5376 } else { 5377 // radical change means getting out of snap mode 5378 if (ax > MAX_SLOPE_FOR_DIAG * ay 5379 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5380 mSnapScrollMode = SNAP_NONE; 5381 } 5382 // reverse direction means lock in the snap mode 5383 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5384 (mSnapPositive 5385 ? deltaY < -mMinLockSnapReverseDistance 5386 : deltaY > mMinLockSnapReverseDistance)) { 5387 mSnapScrollMode |= SNAP_LOCK; 5388 } 5389 } 5390 } 5391 if (mSnapScrollMode != SNAP_NONE) { 5392 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5393 deltaY = 0; 5394 } else { 5395 deltaX = 0; 5396 } 5397 } 5398 if ((deltaX | deltaY) != 0) { 5399 if (deltaX != 0) { 5400 mLastTouchX = x; 5401 } 5402 if (deltaY != 0) { 5403 mLastTouchY = y; 5404 } 5405 mHeldMotionless = MOTIONLESS_FALSE; 5406 } else { 5407 // keep the scrollbar on the screen even there is no 5408 // scroll 5409 mLastTouchX = x; 5410 mLastTouchY = y; 5411 keepScrollBarsVisible = true; 5412 } 5413 mLastTouchTime = eventTime; 5414 mUserScroll = true; 5415 } 5416 5417 doDrag(deltaX, deltaY); 5418 5419 // Turn off scrollbars when dragging a layer. 5420 if (keepScrollBarsVisible && 5421 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5422 if (mHeldMotionless != MOTIONLESS_TRUE) { 5423 mHeldMotionless = MOTIONLESS_TRUE; 5424 invalidate(); 5425 } 5426 // keep the scrollbar on the screen even there is no scroll 5427 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5428 false); 5429 // return false to indicate that we can't pan out of the 5430 // view space 5431 return !done; 5432 } 5433 break; 5434 } 5435 case MotionEvent.ACTION_UP: { 5436 if (!isFocused()) requestFocus(); 5437 // pass the touch events from UI thread to WebCore thread 5438 if (shouldForwardTouchEvent()) { 5439 TouchEventData ted = new TouchEventData(); 5440 ted.mAction = action; 5441 ted.mPoints = new Point[1]; 5442 ted.mPoints[0] = new Point(contentX, contentY); 5443 ted.mMetaState = ev.getMetaState(); 5444 ted.mReprocess = mDeferTouchProcess; 5445 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5446 } 5447 mLastTouchUpTime = eventTime; 5448 switch (mTouchMode) { 5449 case TOUCH_DOUBLE_TAP_MODE: // double tap 5450 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5451 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5452 if (inFullScreenMode() || mDeferTouchProcess) { 5453 TouchEventData ted = new TouchEventData(); 5454 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5455 ted.mPoints = new Point[1]; 5456 ted.mPoints[0] = new Point(contentX, contentY); 5457 ted.mMetaState = ev.getMetaState(); 5458 ted.mReprocess = mDeferTouchProcess; 5459 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5460 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5461 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5462 mTouchMode = TOUCH_DONE_MODE; 5463 } 5464 break; 5465 case TOUCH_INIT_MODE: // tap 5466 case TOUCH_SHORTPRESS_START_MODE: 5467 case TOUCH_SHORTPRESS_MODE: 5468 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5469 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5470 if (mConfirmMove) { 5471 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5472 " WebCore's response for touch down."); 5473 if (mPreventDefault != PREVENT_DEFAULT_YES 5474 && (computeMaxScrollX() > 0 5475 || computeMaxScrollY() > 0)) { 5476 // If the user has performed a very quick touch 5477 // sequence it is possible that we may get here 5478 // before WebCore has had a chance to process the events. 5479 // In this case, any call to preventDefault in the 5480 // JS touch handler will not have been executed yet. 5481 // Hence we will see both the UI (now) and WebCore 5482 // (when context switches) handling the event, 5483 // regardless of whether the web developer actually 5484 // doeses preventDefault in their touch handler. This 5485 // is the nature of our asynchronous touch model. 5486 5487 // we will not rewrite drag code here, but we 5488 // will try fling if it applies. 5489 WebViewCore.reducePriority(); 5490 // to get better performance, pause updating the 5491 // picture 5492 WebViewCore.pauseUpdatePicture(mWebViewCore); 5493 // fall through to TOUCH_DRAG_MODE 5494 } else { 5495 // WebKit may consume the touch event and modify 5496 // DOM. drawContentPicture() will be called with 5497 // animateSroll as true for better performance. 5498 // Force redraw in high-quality. 5499 invalidate(); 5500 break; 5501 } 5502 } else { 5503 if (mSelectingText) { 5504 // tapping on selection or controls does nothing 5505 if (!nativeHitSelection(contentX, contentY)) { 5506 selectionDone(); 5507 } 5508 break; 5509 } 5510 // only trigger double tap if the WebView is 5511 // scalable 5512 if (mTouchMode == TOUCH_INIT_MODE 5513 && (canZoomIn() || canZoomOut())) { 5514 mPrivateHandler.sendEmptyMessageDelayed( 5515 RELEASE_SINGLE_TAP, ViewConfiguration 5516 .getDoubleTapTimeout()); 5517 } else { 5518 doShortPress(); 5519 } 5520 break; 5521 } 5522 case TOUCH_DRAG_MODE: 5523 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5524 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5525 // if the user waits a while w/o moving before the 5526 // up, we don't want to do a fling 5527 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5528 if (mVelocityTracker == null) { 5529 Log.e(LOGTAG, "Got null mVelocityTracker when " 5530 + "mPreventDefault = " 5531 + mPreventDefault 5532 + " mDeferTouchProcess = " 5533 + mDeferTouchProcess); 5534 } 5535 mVelocityTracker.addMovement(ev); 5536 // set to MOTIONLESS_IGNORE so that it won't keep 5537 // removing and sending message in 5538 // drawCoreAndCursorRing() 5539 mHeldMotionless = MOTIONLESS_IGNORE; 5540 doFling(); 5541 break; 5542 } else { 5543 if (mScroller.springBack(mScrollX, mScrollY, 0, 5544 computeMaxScrollX(), 0, 5545 computeMaxScrollY())) { 5546 invalidate(); 5547 } 5548 } 5549 // redraw in high-quality, as we're done dragging 5550 mHeldMotionless = MOTIONLESS_TRUE; 5551 invalidate(); 5552 // fall through 5553 case TOUCH_DRAG_START_MODE: 5554 case TOUCH_DRAG_LAYER_MODE: 5555 // TOUCH_DRAG_START_MODE should not happen for the real 5556 // device as we almost certain will get a MOVE. But this 5557 // is possible on emulator. 5558 mLastVelocity = 0; 5559 WebViewCore.resumePriority(); 5560 if (!mSelectingText) { 5561 WebViewCore.resumeUpdatePicture(mWebViewCore); 5562 } 5563 break; 5564 } 5565 stopTouch(); 5566 break; 5567 } 5568 case MotionEvent.ACTION_CANCEL: { 5569 if (mTouchMode == TOUCH_DRAG_MODE) { 5570 mScroller.springBack(mScrollX, mScrollY, 0, 5571 computeMaxScrollX(), 0, computeMaxScrollY()); 5572 invalidate(); 5573 } 5574 cancelWebCoreTouchEvent(contentX, contentY, false); 5575 cancelTouch(); 5576 break; 5577 } 5578 } 5579 return true; 5580 } 5581 5582 private void passMultiTouchToWebKit(MotionEvent ev) { 5583 TouchEventData ted = new TouchEventData(); 5584 ted.mAction = ev.getAction() & MotionEvent.ACTION_MASK; 5585 final int count = ev.getPointerCount(); 5586 ted.mPoints = new Point[count]; 5587 for (int c = 0; c < count; c++) { 5588 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5589 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5590 ted.mPoints[c] = new Point(x, y); 5591 } 5592 ted.mMetaState = ev.getMetaState(); 5593 ted.mReprocess = mDeferTouchProcess; 5594 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5595 cancelLongPress(); 5596 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5597 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5598 } 5599 5600 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5601 if (shouldForwardTouchEvent()) { 5602 if (removeEvents) { 5603 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5604 } 5605 TouchEventData ted = new TouchEventData(); 5606 ted.mPoints = new Point[1]; 5607 ted.mPoints[0] = new Point(x, y); 5608 ted.mAction = MotionEvent.ACTION_CANCEL; 5609 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5610 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5611 } 5612 } 5613 5614 private void startTouch(float x, float y, long eventTime) { 5615 // Remember where the motion event started 5616 mLastTouchX = x; 5617 mLastTouchY = y; 5618 mLastTouchTime = eventTime; 5619 mVelocityTracker = VelocityTracker.obtain(); 5620 mSnapScrollMode = SNAP_NONE; 5621 } 5622 5623 private void startDrag() { 5624 WebViewCore.reducePriority(); 5625 // to get better performance, pause updating the picture 5626 WebViewCore.pauseUpdatePicture(mWebViewCore); 5627 if (!mDragFromTextInput) { 5628 nativeHideCursor(); 5629 } 5630 5631 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5632 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 5633 mZoomManager.invokeZoomPicker(); 5634 } 5635 } 5636 5637 private void doDrag(int deltaX, int deltaY) { 5638 if ((deltaX | deltaY) != 0) { 5639 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5640 deltaX = viewToContentDimension(deltaX); 5641 deltaY = viewToContentDimension(deltaY); 5642 if (nativeScrollLayer(mScrollingLayer, deltaX, deltaY)) { 5643 invalidate(); 5644 } 5645 return; 5646 } 5647 5648 final int oldX = mScrollX; 5649 final int oldY = mScrollY; 5650 final int rangeX = computeMaxScrollX(); 5651 final int rangeY = computeMaxScrollY(); 5652 5653 if (mOverScrollGlow != null) { 5654 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 5655 } 5656 5657 overScrollBy(deltaX, deltaY, oldX, oldY, 5658 rangeX, rangeY, 5659 mOverscrollDistance, mOverscrollDistance, true); 5660 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 5661 invalidate(); 5662 } 5663 } 5664 mZoomManager.keepZoomPickerVisible(); 5665 } 5666 5667 private void stopTouch() { 5668 // we also use mVelocityTracker == null to tell us that we are 5669 // not "moving around", so we can take the slower/prettier 5670 // mode in the drawing code 5671 if (mVelocityTracker != null) { 5672 mVelocityTracker.recycle(); 5673 mVelocityTracker = null; 5674 } 5675 5676 // Release any pulled glows 5677 if (mOverScrollGlow != null) { 5678 mOverScrollGlow.releaseAll(); 5679 } 5680 } 5681 5682 private void cancelTouch() { 5683 // we also use mVelocityTracker == null to tell us that we are 5684 // not "moving around", so we can take the slower/prettier 5685 // mode in the drawing code 5686 if (mVelocityTracker != null) { 5687 mVelocityTracker.recycle(); 5688 mVelocityTracker = null; 5689 } 5690 5691 if ((mTouchMode == TOUCH_DRAG_MODE 5692 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 5693 WebViewCore.resumePriority(); 5694 WebViewCore.resumeUpdatePicture(mWebViewCore); 5695 } 5696 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5697 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5698 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5699 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5700 if (getSettings().supportTouchOnly()) { 5701 removeTouchHighlight(true); 5702 } 5703 mHeldMotionless = MOTIONLESS_TRUE; 5704 mTouchMode = TOUCH_DONE_MODE; 5705 nativeHideCursor(); 5706 } 5707 5708 private long mTrackballFirstTime = 0; 5709 private long mTrackballLastTime = 0; 5710 private float mTrackballRemainsX = 0.0f; 5711 private float mTrackballRemainsY = 0.0f; 5712 private int mTrackballXMove = 0; 5713 private int mTrackballYMove = 0; 5714 private boolean mSelectingText = false; 5715 private boolean mSelectionStarted = false; 5716 private boolean mExtendSelection = false; 5717 private boolean mDrawSelectionPointer = false; 5718 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5719 private static final int TRACKBALL_TIMEOUT = 200; 5720 private static final int TRACKBALL_WAIT = 100; 5721 private static final int TRACKBALL_SCALE = 400; 5722 private static final int TRACKBALL_SCROLL_COUNT = 5; 5723 private static final int TRACKBALL_MOVE_COUNT = 10; 5724 private static final int TRACKBALL_MULTIPLIER = 3; 5725 private static final int SELECT_CURSOR_OFFSET = 16; 5726 private int mSelectX = 0; 5727 private int mSelectY = 0; 5728 private boolean mFocusSizeChanged = false; 5729 private boolean mTrackballDown = false; 5730 private long mTrackballUpTime = 0; 5731 private long mLastCursorTime = 0; 5732 private Rect mLastCursorBounds; 5733 5734 // Set by default; BrowserActivity clears to interpret trackball data 5735 // directly for movement. Currently, the framework only passes 5736 // arrow key events, not trackball events, from one child to the next 5737 private boolean mMapTrackballToArrowKeys = true; 5738 5739 public void setMapTrackballToArrowKeys(boolean setMap) { 5740 mMapTrackballToArrowKeys = setMap; 5741 } 5742 5743 void resetTrackballTime() { 5744 mTrackballLastTime = 0; 5745 } 5746 5747 @Override 5748 public boolean onTrackballEvent(MotionEvent ev) { 5749 long time = ev.getEventTime(); 5750 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5751 if (ev.getY() > 0) pageDown(true); 5752 if (ev.getY() < 0) pageUp(true); 5753 return true; 5754 } 5755 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5756 if (mSelectingText) { 5757 return true; // discard press if copy in progress 5758 } 5759 mTrackballDown = true; 5760 if (mNativeClass == 0) { 5761 return false; 5762 } 5763 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5764 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5765 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5766 nativeSelectBestAt(mLastCursorBounds); 5767 } 5768 if (DebugFlags.WEB_VIEW) { 5769 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5770 + " time=" + time 5771 + " mLastCursorTime=" + mLastCursorTime); 5772 } 5773 if (isInTouchMode()) requestFocusFromTouch(); 5774 return false; // let common code in onKeyDown at it 5775 } 5776 if (ev.getAction() == MotionEvent.ACTION_UP) { 5777 // LONG_PRESS_CENTER is set in common onKeyDown 5778 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5779 mTrackballDown = false; 5780 mTrackballUpTime = time; 5781 if (mSelectingText) { 5782 if (mExtendSelection) { 5783 copySelection(); 5784 selectionDone(); 5785 } else { 5786 mExtendSelection = true; 5787 nativeSetExtendSelection(); 5788 invalidate(); // draw the i-beam instead of the arrow 5789 } 5790 return true; // discard press if copy in progress 5791 } 5792 if (DebugFlags.WEB_VIEW) { 5793 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5794 + " time=" + time 5795 ); 5796 } 5797 return false; // let common code in onKeyUp at it 5798 } 5799 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 5800 (mAccessibilityInjector != null || mAccessibilityScriptInjected)) { 5801 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5802 return false; 5803 } 5804 if (mTrackballDown) { 5805 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5806 return true; // discard move if trackball is down 5807 } 5808 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5809 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5810 return true; 5811 } 5812 // TODO: alternatively we can do panning as touch does 5813 switchOutDrawHistory(); 5814 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5815 if (DebugFlags.WEB_VIEW) { 5816 Log.v(LOGTAG, "onTrackballEvent time=" 5817 + time + " last=" + mTrackballLastTime); 5818 } 5819 mTrackballFirstTime = time; 5820 mTrackballXMove = mTrackballYMove = 0; 5821 } 5822 mTrackballLastTime = time; 5823 if (DebugFlags.WEB_VIEW) { 5824 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5825 } 5826 mTrackballRemainsX += ev.getX(); 5827 mTrackballRemainsY += ev.getY(); 5828 doTrackball(time, ev.getMetaState()); 5829 return true; 5830 } 5831 5832 void moveSelection(float xRate, float yRate) { 5833 if (mNativeClass == 0) 5834 return; 5835 int width = getViewWidth(); 5836 int height = getViewHeight(); 5837 mSelectX += xRate; 5838 mSelectY += yRate; 5839 int maxX = width + mScrollX; 5840 int maxY = height + mScrollY; 5841 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5842 , mSelectX)); 5843 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5844 , mSelectY)); 5845 if (DebugFlags.WEB_VIEW) { 5846 Log.v(LOGTAG, "moveSelection" 5847 + " mSelectX=" + mSelectX 5848 + " mSelectY=" + mSelectY 5849 + " mScrollX=" + mScrollX 5850 + " mScrollY=" + mScrollY 5851 + " xRate=" + xRate 5852 + " yRate=" + yRate 5853 ); 5854 } 5855 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5856 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5857 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5858 : 0; 5859 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5860 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5861 : 0; 5862 pinScrollBy(scrollX, scrollY, true, 0); 5863 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5864 requestRectangleOnScreen(select); 5865 invalidate(); 5866 } 5867 5868 private int scaleTrackballX(float xRate, int width) { 5869 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5870 int nextXMove = xMove; 5871 if (xMove > 0) { 5872 if (xMove > mTrackballXMove) { 5873 xMove -= mTrackballXMove; 5874 } 5875 } else if (xMove < mTrackballXMove) { 5876 xMove -= mTrackballXMove; 5877 } 5878 mTrackballXMove = nextXMove; 5879 return xMove; 5880 } 5881 5882 private int scaleTrackballY(float yRate, int height) { 5883 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5884 int nextYMove = yMove; 5885 if (yMove > 0) { 5886 if (yMove > mTrackballYMove) { 5887 yMove -= mTrackballYMove; 5888 } 5889 } else if (yMove < mTrackballYMove) { 5890 yMove -= mTrackballYMove; 5891 } 5892 mTrackballYMove = nextYMove; 5893 return yMove; 5894 } 5895 5896 private int keyCodeToSoundsEffect(int keyCode) { 5897 switch(keyCode) { 5898 case KeyEvent.KEYCODE_DPAD_UP: 5899 return SoundEffectConstants.NAVIGATION_UP; 5900 case KeyEvent.KEYCODE_DPAD_RIGHT: 5901 return SoundEffectConstants.NAVIGATION_RIGHT; 5902 case KeyEvent.KEYCODE_DPAD_DOWN: 5903 return SoundEffectConstants.NAVIGATION_DOWN; 5904 case KeyEvent.KEYCODE_DPAD_LEFT: 5905 return SoundEffectConstants.NAVIGATION_LEFT; 5906 } 5907 throw new IllegalArgumentException("keyCode must be one of " + 5908 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5909 "KEYCODE_DPAD_LEFT}."); 5910 } 5911 5912 private void doTrackball(long time, int metaState) { 5913 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5914 if (elapsed == 0) { 5915 elapsed = TRACKBALL_TIMEOUT; 5916 } 5917 float xRate = mTrackballRemainsX * 1000 / elapsed; 5918 float yRate = mTrackballRemainsY * 1000 / elapsed; 5919 int viewWidth = getViewWidth(); 5920 int viewHeight = getViewHeight(); 5921 if (mSelectingText) { 5922 if (!mDrawSelectionPointer) { 5923 // The last selection was made by touch, disabling drawing the 5924 // selection pointer. Allow the trackball to adjust the 5925 // position of the touch control. 5926 mSelectX = contentToViewX(nativeSelectionX()); 5927 mSelectY = contentToViewY(nativeSelectionY()); 5928 mDrawSelectionPointer = mExtendSelection = true; 5929 nativeSetExtendSelection(); 5930 } 5931 moveSelection(scaleTrackballX(xRate, viewWidth), 5932 scaleTrackballY(yRate, viewHeight)); 5933 mTrackballRemainsX = mTrackballRemainsY = 0; 5934 return; 5935 } 5936 float ax = Math.abs(xRate); 5937 float ay = Math.abs(yRate); 5938 float maxA = Math.max(ax, ay); 5939 if (DebugFlags.WEB_VIEW) { 5940 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5941 + " xRate=" + xRate 5942 + " yRate=" + yRate 5943 + " mTrackballRemainsX=" + mTrackballRemainsX 5944 + " mTrackballRemainsY=" + mTrackballRemainsY); 5945 } 5946 int width = mContentWidth - viewWidth; 5947 int height = mContentHeight - viewHeight; 5948 if (width < 0) width = 0; 5949 if (height < 0) height = 0; 5950 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5951 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5952 maxA = Math.max(ax, ay); 5953 int count = Math.max(0, (int) maxA); 5954 int oldScrollX = mScrollX; 5955 int oldScrollY = mScrollY; 5956 if (count > 0) { 5957 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5958 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5959 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5960 KeyEvent.KEYCODE_DPAD_RIGHT; 5961 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5962 if (DebugFlags.WEB_VIEW) { 5963 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5964 + " count=" + count 5965 + " mTrackballRemainsX=" + mTrackballRemainsX 5966 + " mTrackballRemainsY=" + mTrackballRemainsY); 5967 } 5968 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 5969 for (int i = 0; i < count; i++) { 5970 letPageHandleNavKey(selectKeyCode, time, true, metaState); 5971 } 5972 letPageHandleNavKey(selectKeyCode, time, false, metaState); 5973 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5974 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5975 } 5976 mTrackballRemainsX = mTrackballRemainsY = 0; 5977 } 5978 if (count >= TRACKBALL_SCROLL_COUNT) { 5979 int xMove = scaleTrackballX(xRate, width); 5980 int yMove = scaleTrackballY(yRate, height); 5981 if (DebugFlags.WEB_VIEW) { 5982 Log.v(LOGTAG, "doTrackball pinScrollBy" 5983 + " count=" + count 5984 + " xMove=" + xMove + " yMove=" + yMove 5985 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5986 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5987 ); 5988 } 5989 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5990 xMove = 0; 5991 } 5992 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5993 yMove = 0; 5994 } 5995 if (xMove != 0 || yMove != 0) { 5996 pinScrollBy(xMove, yMove, true, 0); 5997 } 5998 mUserScroll = true; 5999 } 6000 } 6001 6002 /** 6003 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6004 * @return Maximum horizontal scroll position within real content 6005 */ 6006 int computeMaxScrollX() { 6007 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6008 } 6009 6010 /** 6011 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6012 * @return Maximum vertical scroll position within real content 6013 */ 6014 int computeMaxScrollY() { 6015 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6016 - getViewHeightWithTitle(), 0); 6017 } 6018 6019 boolean updateScrollCoordinates(int x, int y) { 6020 int oldX = mScrollX; 6021 int oldY = mScrollY; 6022 mScrollX = x; 6023 mScrollY = y; 6024 if (oldX != mScrollX || oldY != mScrollY) { 6025 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6026 return true; 6027 } else { 6028 return false; 6029 } 6030 } 6031 6032 public void flingScroll(int vx, int vy) { 6033 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6034 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6035 invalidate(); 6036 } 6037 6038 private void doFling() { 6039 if (mVelocityTracker == null) { 6040 return; 6041 } 6042 int maxX = computeMaxScrollX(); 6043 int maxY = computeMaxScrollY(); 6044 6045 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6046 int vx = (int) mVelocityTracker.getXVelocity(); 6047 int vy = (int) mVelocityTracker.getYVelocity(); 6048 6049 if (mSnapScrollMode != SNAP_NONE) { 6050 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6051 vy = 0; 6052 } else { 6053 vx = 0; 6054 } 6055 } 6056 if (true /* EMG release: make our fling more like Maps' */) { 6057 // maps cuts their velocity in half 6058 vx = vx * 3 / 4; 6059 vy = vy * 3 / 4; 6060 } 6061 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6062 WebViewCore.resumePriority(); 6063 if (!mSelectingText) { 6064 WebViewCore.resumeUpdatePicture(mWebViewCore); 6065 } 6066 if (mScroller.springBack(mScrollX, mScrollY, 0, computeMaxScrollX(), 6067 0, computeMaxScrollY())) { 6068 invalidate(); 6069 } 6070 return; 6071 } 6072 float currentVelocity = mScroller.getCurrVelocity(); 6073 float velocity = (float) Math.hypot(vx, vy); 6074 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6075 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6076 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6077 - Math.atan2(vy, vx))); 6078 final float circle = (float) (Math.PI) * 2.0f; 6079 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6080 vx += currentVelocity * mLastVelX / mLastVelocity; 6081 vy += currentVelocity * mLastVelY / mLastVelocity; 6082 velocity = (float) Math.hypot(vx, vy); 6083 if (DebugFlags.WEB_VIEW) { 6084 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6085 } 6086 } else if (DebugFlags.WEB_VIEW) { 6087 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6088 } 6089 } else if (DebugFlags.WEB_VIEW) { 6090 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6091 + " current=" + currentVelocity 6092 + " vx=" + vx + " vy=" + vy 6093 + " maxX=" + maxX + " maxY=" + maxY 6094 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 6095 } 6096 6097 // Allow sloppy flings without overscrolling at the edges. 6098 if ((mScrollX == 0 || mScrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6099 vx = 0; 6100 } 6101 if ((mScrollY == 0 || mScrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6102 vy = 0; 6103 } 6104 6105 if (mOverscrollDistance < mOverflingDistance) { 6106 if (mScrollX == -mOverscrollDistance || mScrollX == maxX + mOverscrollDistance) { 6107 vx = 0; 6108 } 6109 if (mScrollY == -mOverscrollDistance || mScrollY == maxY + mOverscrollDistance) { 6110 vy = 0; 6111 } 6112 } 6113 6114 mLastVelX = vx; 6115 mLastVelY = vy; 6116 mLastVelocity = velocity; 6117 6118 // no horizontal overscroll if the content just fits 6119 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY, 6120 maxX == 0 ? 0 : mOverflingDistance, mOverflingDistance); 6121 // Duration is calculated based on velocity. With range boundaries and overscroll 6122 // we may not know how long the final animation will take. (Hence the deprecation 6123 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6124 // resumes during this effect we will take a performance hit. See computeScroll; 6125 // we resume webcore there when the animation is finished. 6126 final int time = mScroller.getDuration(); 6127 awakenScrollBars(time); 6128 invalidate(); 6129 } 6130 6131 /** 6132 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6133 * in charge of installing this view to the view hierarchy. This view will 6134 * become visible when the user starts scrolling via touch and fade away if 6135 * the user does not interact with it. 6136 * <p/> 6137 * API version 3 introduces a built-in zoom mechanism that is shown 6138 * automatically by the MapView. This is the preferred approach for 6139 * showing the zoom UI. 6140 * 6141 * @deprecated The built-in zoom mechanism is preferred, see 6142 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6143 */ 6144 @Deprecated 6145 public View getZoomControls() { 6146 if (!getSettings().supportZoom()) { 6147 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6148 return null; 6149 } 6150 return mZoomManager.getExternalZoomPicker(); 6151 } 6152 6153 void dismissZoomControl() { 6154 mZoomManager.dismissZoomPicker(); 6155 } 6156 6157 float getDefaultZoomScale() { 6158 return mZoomManager.getDefaultScale(); 6159 } 6160 6161 /** 6162 * @return TRUE if the WebView can be zoomed in. 6163 */ 6164 public boolean canZoomIn() { 6165 return mZoomManager.canZoomIn(); 6166 } 6167 6168 /** 6169 * @return TRUE if the WebView can be zoomed out. 6170 */ 6171 public boolean canZoomOut() { 6172 return mZoomManager.canZoomOut(); 6173 } 6174 6175 /** 6176 * Perform zoom in in the webview 6177 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6178 */ 6179 public boolean zoomIn() { 6180 return mZoomManager.zoomIn(); 6181 } 6182 6183 /** 6184 * Perform zoom out in the webview 6185 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6186 */ 6187 public boolean zoomOut() { 6188 return mZoomManager.zoomOut(); 6189 } 6190 6191 private void updateSelection() { 6192 if (mNativeClass == 0) { 6193 return; 6194 } 6195 // mLastTouchX and mLastTouchY are the point in the current viewport 6196 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6197 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6198 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6199 contentX + mNavSlop, contentY + mNavSlop); 6200 nativeSelectBestAt(rect); 6201 } 6202 6203 /** 6204 * Scroll the focused text field/area to match the WebTextView 6205 * @param xPercent New x position of the WebTextView from 0 to 1. 6206 * @param y New y position of the WebTextView in view coordinates 6207 */ 6208 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 6209 if (!inEditingMode() || mWebViewCore == null) { 6210 return; 6211 } 6212 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 6213 // Since this position is relative to the top of the text input 6214 // field, we do not need to take the title bar's height into 6215 // consideration. 6216 viewToContentDimension(y), 6217 new Float(xPercent)); 6218 } 6219 6220 /** 6221 * Set our starting point and time for a drag from the WebTextView. 6222 */ 6223 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6224 if (!inEditingMode()) { 6225 return; 6226 } 6227 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 6228 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 6229 mLastTouchTime = eventTime; 6230 if (!mScroller.isFinished()) { 6231 abortAnimation(); 6232 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6233 } 6234 mSnapScrollMode = SNAP_NONE; 6235 mVelocityTracker = VelocityTracker.obtain(); 6236 mTouchMode = TOUCH_DRAG_START_MODE; 6237 } 6238 6239 /** 6240 * Given a motion event from the WebTextView, set its location to our 6241 * coordinates, and handle the event. 6242 */ 6243 /*package*/ boolean textFieldDrag(MotionEvent event) { 6244 if (!inEditingMode()) { 6245 return false; 6246 } 6247 mDragFromTextInput = true; 6248 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6249 (float) (mWebTextView.getTop() - mScrollY)); 6250 boolean result = onTouchEvent(event); 6251 mDragFromTextInput = false; 6252 return result; 6253 } 6254 6255 /** 6256 * Due a touch up from a WebTextView. This will be handled by webkit to 6257 * change the selection. 6258 * @param event MotionEvent in the WebTextView's coordinates. 6259 */ 6260 /*package*/ void touchUpOnTextField(MotionEvent event) { 6261 if (!inEditingMode()) { 6262 return; 6263 } 6264 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6265 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6266 nativeMotionUp(x, y, mNavSlop); 6267 } 6268 6269 /** 6270 * Called when pressing the center key or trackball on a textfield. 6271 */ 6272 /*package*/ void centerKeyPressOnTextField() { 6273 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6274 nativeCursorNodePointer()); 6275 } 6276 6277 private void doShortPress() { 6278 if (mNativeClass == 0) { 6279 return; 6280 } 6281 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6282 return; 6283 } 6284 mTouchMode = TOUCH_DONE_MODE; 6285 switchOutDrawHistory(); 6286 // mLastTouchX and mLastTouchY are the point in the current viewport 6287 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6288 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6289 if (getSettings().supportTouchOnly()) { 6290 removeTouchHighlight(false); 6291 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6292 // use "0" as generation id to inform WebKit to use the same x/y as 6293 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6294 touchUpData.mMoveGeneration = 0; 6295 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6296 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6297 WebViewCore.MotionUpData motionUpData = new WebViewCore 6298 .MotionUpData(); 6299 motionUpData.mFrame = nativeCacheHitFramePointer(); 6300 motionUpData.mNode = nativeCacheHitNodePointer(); 6301 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6302 motionUpData.mX = contentX; 6303 motionUpData.mY = contentY; 6304 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6305 motionUpData); 6306 } else { 6307 doMotionUp(contentX, contentY); 6308 } 6309 } 6310 6311 private void doMotionUp(int contentX, int contentY) { 6312 if (nativeMotionUp(contentX, contentY, mNavSlop) && mLogEvent) { 6313 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6314 } 6315 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6316 playSoundEffect(SoundEffectConstants.CLICK); 6317 } 6318 } 6319 6320 /* 6321 * Return true if the view (Plugin) is fully visible and maximized inside 6322 * the WebView. 6323 */ 6324 boolean isPluginFitOnScreen(ViewManager.ChildView view) { 6325 final int viewWidth = getViewWidth(); 6326 final int viewHeight = getViewHeightWithTitle(); 6327 float scale = Math.min((float) viewWidth / view.width, (float) viewHeight / view.height); 6328 scale = mZoomManager.computeScaleWithLimits(scale); 6329 return !mZoomManager.willScaleTriggerZoom(scale) 6330 && contentToViewX(view.x) >= mScrollX 6331 && contentToViewX(view.x + view.width) <= mScrollX + viewWidth 6332 && contentToViewY(view.y) >= mScrollY 6333 && contentToViewY(view.y + view.height) <= mScrollY + viewHeight; 6334 } 6335 6336 /* 6337 * Maximize and center the rectangle, specified in the document coordinate 6338 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6339 * animated scroll to center it. If the zoom needs to be changed, find the 6340 * zoom center and do a smooth zoom transition. 6341 */ 6342 void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 6343 int viewWidth = getViewWidth(); 6344 int viewHeight = getViewHeightWithTitle(); 6345 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 6346 / docHeight); 6347 scale = mZoomManager.computeScaleWithLimits(scale); 6348 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6349 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 6350 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 6351 true, 0); 6352 } else { 6353 float actualScale = mZoomManager.getScale(); 6354 float oldScreenX = docX * actualScale - mScrollX; 6355 float rectViewX = docX * scale; 6356 float rectViewWidth = docWidth * scale; 6357 float newMaxWidth = mContentWidth * scale; 6358 float newScreenX = (viewWidth - rectViewWidth) / 2; 6359 // pin the newX to the WebView 6360 if (newScreenX > rectViewX) { 6361 newScreenX = rectViewX; 6362 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6363 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6364 } 6365 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6366 / (scale - actualScale); 6367 float oldScreenY = docY * actualScale + getTitleHeight() 6368 - mScrollY; 6369 float rectViewY = docY * scale + getTitleHeight(); 6370 float rectViewHeight = docHeight * scale; 6371 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6372 float newScreenY = (viewHeight - rectViewHeight) / 2; 6373 // pin the newY to the WebView 6374 if (newScreenY > rectViewY) { 6375 newScreenY = rectViewY; 6376 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6377 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6378 } 6379 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6380 / (scale - actualScale); 6381 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6382 mZoomManager.startZoomAnimation(scale, false); 6383 } 6384 } 6385 6386 // Called by JNI to handle a touch on a node representing an email address, 6387 // address, or phone number 6388 private void overrideLoading(String url) { 6389 mCallbackProxy.uiOverrideUrlLoading(url); 6390 } 6391 6392 @Override 6393 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6394 // FIXME: If a subwindow is showing find, and the user touches the 6395 // background window, it can steal focus. 6396 if (mFindIsUp) return false; 6397 boolean result = false; 6398 if (inEditingMode()) { 6399 result = mWebTextView.requestFocus(direction, 6400 previouslyFocusedRect); 6401 } else { 6402 result = super.requestFocus(direction, previouslyFocusedRect); 6403 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6404 // For cases such as GMail, where we gain focus from a direction, 6405 // we want to move to the first available link. 6406 // FIXME: If there are no visible links, we may not want to 6407 int fakeKeyDirection = 0; 6408 switch(direction) { 6409 case View.FOCUS_UP: 6410 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6411 break; 6412 case View.FOCUS_DOWN: 6413 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6414 break; 6415 case View.FOCUS_LEFT: 6416 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6417 break; 6418 case View.FOCUS_RIGHT: 6419 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6420 break; 6421 default: 6422 return result; 6423 } 6424 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6425 navHandledKey(fakeKeyDirection, 1, true, 0); 6426 } 6427 } 6428 } 6429 return result; 6430 } 6431 6432 @Override 6433 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6434 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6435 6436 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6437 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6438 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6439 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6440 6441 int measuredHeight = heightSize; 6442 int measuredWidth = widthSize; 6443 6444 // Grab the content size from WebViewCore. 6445 int contentHeight = contentToViewDimension(mContentHeight); 6446 int contentWidth = contentToViewDimension(mContentWidth); 6447 6448// Log.d(LOGTAG, "------- measure " + heightMode); 6449 6450 if (heightMode != MeasureSpec.EXACTLY) { 6451 mHeightCanMeasure = true; 6452 measuredHeight = contentHeight; 6453 if (heightMode == MeasureSpec.AT_MOST) { 6454 // If we are larger than the AT_MOST height, then our height can 6455 // no longer be measured and we should scroll internally. 6456 if (measuredHeight > heightSize) { 6457 measuredHeight = heightSize; 6458 mHeightCanMeasure = false; 6459 } 6460 } 6461 } else { 6462 mHeightCanMeasure = false; 6463 } 6464 if (mNativeClass != 0) { 6465 nativeSetHeightCanMeasure(mHeightCanMeasure); 6466 } 6467 // For the width, always use the given size unless unspecified. 6468 if (widthMode == MeasureSpec.UNSPECIFIED) { 6469 mWidthCanMeasure = true; 6470 measuredWidth = contentWidth; 6471 } else { 6472 mWidthCanMeasure = false; 6473 } 6474 6475 synchronized (this) { 6476 setMeasuredDimension(measuredWidth, measuredHeight); 6477 } 6478 } 6479 6480 @Override 6481 public boolean requestChildRectangleOnScreen(View child, 6482 Rect rect, 6483 boolean immediate) { 6484 // don't scroll while in zoom animation. When it is done, we will adjust 6485 // the necessary components (e.g., WebTextView if it is in editing mode) 6486 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6487 return false; 6488 } 6489 6490 rect.offset(child.getLeft() - child.getScrollX(), 6491 child.getTop() - child.getScrollY()); 6492 6493 Rect content = new Rect(viewToContentX(mScrollX), 6494 viewToContentY(mScrollY), 6495 viewToContentX(mScrollX + getWidth() 6496 - getVerticalScrollbarWidth()), 6497 viewToContentY(mScrollY + getViewHeightWithTitle())); 6498 content = nativeSubtractLayers(content); 6499 int screenTop = contentToViewY(content.top); 6500 int screenBottom = contentToViewY(content.bottom); 6501 int height = screenBottom - screenTop; 6502 int scrollYDelta = 0; 6503 6504 if (rect.bottom > screenBottom) { 6505 int oneThirdOfScreenHeight = height / 3; 6506 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6507 // If the rectangle is too tall to fit in the bottom two thirds 6508 // of the screen, place it at the top. 6509 scrollYDelta = rect.top - screenTop; 6510 } else { 6511 // If the rectangle will still fit on screen, we want its 6512 // top to be in the top third of the screen. 6513 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6514 } 6515 } else if (rect.top < screenTop) { 6516 scrollYDelta = rect.top - screenTop; 6517 } 6518 6519 int screenLeft = contentToViewX(content.left); 6520 int screenRight = contentToViewX(content.right); 6521 int width = screenRight - screenLeft; 6522 int scrollXDelta = 0; 6523 6524 if (rect.right > screenRight && rect.left > screenLeft) { 6525 if (rect.width() > width) { 6526 scrollXDelta += (rect.left - screenLeft); 6527 } else { 6528 scrollXDelta += (rect.right - screenRight); 6529 } 6530 } else if (rect.left < screenLeft) { 6531 scrollXDelta -= (screenLeft - rect.left); 6532 } 6533 6534 if ((scrollYDelta | scrollXDelta) != 0) { 6535 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6536 } 6537 6538 return false; 6539 } 6540 6541 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6542 String replace, int newStart, int newEnd) { 6543 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6544 arg.mReplace = replace; 6545 arg.mNewStart = newStart; 6546 arg.mNewEnd = newEnd; 6547 mTextGeneration++; 6548 arg.mTextGeneration = mTextGeneration; 6549 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6550 } 6551 6552 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6553 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6554 arg.mEvent = event; 6555 arg.mCurrentText = currentText; 6556 // Increase our text generation number, and pass it to webcore thread 6557 mTextGeneration++; 6558 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6559 // WebKit's document state is not saved until about to leave the page. 6560 // To make sure the host application, like Browser, has the up to date 6561 // document state when it goes to background, we force to save the 6562 // document state. 6563 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6564 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6565 cursorData(), 1000); 6566 } 6567 6568 /* package */ synchronized WebViewCore getWebViewCore() { 6569 return mWebViewCore; 6570 } 6571 6572 //------------------------------------------------------------------------- 6573 // Methods can be called from a separate thread, like WebViewCore 6574 // If it needs to call the View system, it has to send message. 6575 //------------------------------------------------------------------------- 6576 6577 /** 6578 * General handler to receive message coming from webkit thread 6579 */ 6580 class PrivateHandler extends Handler { 6581 @Override 6582 public void handleMessage(Message msg) { 6583 // exclude INVAL_RECT_MSG_ID since it is frequently output 6584 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6585 if (msg.what >= FIRST_PRIVATE_MSG_ID 6586 && msg.what <= LAST_PRIVATE_MSG_ID) { 6587 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6588 - FIRST_PRIVATE_MSG_ID]); 6589 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6590 && msg.what <= LAST_PACKAGE_MSG_ID) { 6591 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6592 - FIRST_PACKAGE_MSG_ID]); 6593 } else { 6594 Log.v(LOGTAG, Integer.toString(msg.what)); 6595 } 6596 } 6597 if (mWebViewCore == null) { 6598 // after WebView's destroy() is called, skip handling messages. 6599 return; 6600 } 6601 switch (msg.what) { 6602 case REMEMBER_PASSWORD: { 6603 mDatabase.setUsernamePassword( 6604 msg.getData().getString("host"), 6605 msg.getData().getString("username"), 6606 msg.getData().getString("password")); 6607 ((Message) msg.obj).sendToTarget(); 6608 break; 6609 } 6610 case NEVER_REMEMBER_PASSWORD: { 6611 mDatabase.setUsernamePassword( 6612 msg.getData().getString("host"), null, null); 6613 ((Message) msg.obj).sendToTarget(); 6614 break; 6615 } 6616 case PREVENT_DEFAULT_TIMEOUT: { 6617 // if timeout happens, cancel it so that it won't block UI 6618 // to continue handling touch events 6619 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6620 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6621 || (msg.arg1 == MotionEvent.ACTION_MOVE 6622 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6623 cancelWebCoreTouchEvent( 6624 viewToContentX((int) mLastTouchX + mScrollX), 6625 viewToContentY((int) mLastTouchY + mScrollY), 6626 true); 6627 } 6628 break; 6629 } 6630 case SWITCH_TO_SHORTPRESS: { 6631 if (mTouchMode == TOUCH_INIT_MODE) { 6632 if (!getSettings().supportTouchOnly() 6633 && mPreventDefault != PREVENT_DEFAULT_YES) { 6634 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6635 updateSelection(); 6636 } else { 6637 // set to TOUCH_SHORTPRESS_MODE so that it won't 6638 // trigger double tap any more 6639 mTouchMode = TOUCH_SHORTPRESS_MODE; 6640 } 6641 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6642 mTouchMode = TOUCH_DONE_MODE; 6643 } 6644 break; 6645 } 6646 case SWITCH_TO_LONGPRESS: { 6647 if (getSettings().supportTouchOnly()) { 6648 removeTouchHighlight(false); 6649 } 6650 if (inFullScreenMode() || mDeferTouchProcess) { 6651 TouchEventData ted = new TouchEventData(); 6652 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6653 ted.mPoints = new Point[1]; 6654 ted.mPoints[0] = new Point(viewToContentX((int) mLastTouchX + mScrollX), 6655 viewToContentY((int) mLastTouchY + mScrollY)); 6656 // metaState for long press is tricky. Should it be the 6657 // state when the press started or when the press was 6658 // released? Or some intermediary key state? For 6659 // simplicity for now, we don't set it. 6660 ted.mMetaState = 0; 6661 ted.mReprocess = mDeferTouchProcess; 6662 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6663 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6664 mTouchMode = TOUCH_DONE_MODE; 6665 performLongClick(); 6666 } 6667 break; 6668 } 6669 case RELEASE_SINGLE_TAP: { 6670 doShortPress(); 6671 break; 6672 } 6673 case SCROLL_BY_MSG_ID: 6674 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6675 break; 6676 case SYNC_SCROLL_TO_MSG_ID: 6677 if (mUserScroll) { 6678 // if user has scrolled explicitly, don't sync the 6679 // scroll position any more 6680 mUserScroll = false; 6681 break; 6682 } 6683 setContentScrollTo(msg.arg1, msg.arg2); 6684 break; 6685 case SCROLL_TO_MSG_ID: 6686 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6687 // if we can't scroll to the exact position due to pin, 6688 // send a message to WebCore to re-scroll when we get a 6689 // new picture 6690 mUserScroll = false; 6691 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6692 msg.arg1, msg.arg2); 6693 } 6694 break; 6695 case SPAWN_SCROLL_TO_MSG_ID: 6696 spawnContentScrollTo(msg.arg1, msg.arg2); 6697 break; 6698 case UPDATE_ZOOM_RANGE: { 6699 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 6700 // mScrollX contains the new minPrefWidth 6701 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 6702 break; 6703 } 6704 case REPLACE_BASE_CONTENT: { 6705 nativeReplaceBaseContent(msg.arg1); 6706 break; 6707 } 6708 case NEW_PICTURE_MSG_ID: { 6709 // called for new content 6710 mUserScroll = false; 6711 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 6712 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion.getBounds()); 6713 final Point viewSize = draw.mViewSize; 6714 WebViewCore.ViewState viewState = draw.mViewState; 6715 boolean isPictureAfterFirstLayout = viewState != null; 6716 if (isPictureAfterFirstLayout) { 6717 // Reset the last sent data here since dealing with new page. 6718 mLastWidthSent = 0; 6719 mZoomManager.onFirstLayout(draw); 6720 if (!mDrawHistory) { 6721 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 6722 // As we are on a new page, remove the WebTextView. This 6723 // is necessary for page loads driven by webkit, and in 6724 // particular when the user was on a password field, so 6725 // the WebTextView was visible. 6726 clearTextEntry(); 6727 } 6728 } 6729 6730 // We update the layout (i.e. request a layout from the 6731 // view system) if the last view size that we sent to 6732 // WebCore matches the view size of the picture we just 6733 // received in the fixed dimension. 6734 final boolean updateLayout = viewSize.x == mLastWidthSent 6735 && viewSize.y == mLastHeightSent; 6736 recordNewContentSize(draw.mContentSize.x, 6737 draw.mContentSize.y, updateLayout); 6738 if (DebugFlags.WEB_VIEW) { 6739 Rect b = draw.mInvalRegion.getBounds(); 6740 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6741 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6742 } 6743 invalidateContentRect(draw.mInvalRegion.getBounds()); 6744 6745 if (mPictureListener != null) { 6746 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6747 } 6748 6749 // update the zoom information based on the new picture 6750 mZoomManager.onNewPicture(draw); 6751 6752 if (draw.mFocusSizeChanged && inEditingMode()) { 6753 mFocusSizeChanged = true; 6754 } 6755 if (isPictureAfterFirstLayout) { 6756 mViewManager.postReadyToDrawAll(); 6757 } 6758 break; 6759 } 6760 case WEBCORE_INITIALIZED_MSG_ID: 6761 // nativeCreate sets mNativeClass to a non-zero value 6762 nativeCreate(msg.arg1); 6763 break; 6764 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6765 // Make sure that the textfield is currently focused 6766 // and representing the same node as the pointer. 6767 if (inEditingMode() && 6768 mWebTextView.isSameTextField(msg.arg1)) { 6769 if (msg.getData().getBoolean("password")) { 6770 Spannable text = (Spannable) mWebTextView.getText(); 6771 int start = Selection.getSelectionStart(text); 6772 int end = Selection.getSelectionEnd(text); 6773 mWebTextView.setInPassword(true); 6774 // Restore the selection, which may have been 6775 // ruined by setInPassword. 6776 Spannable pword = 6777 (Spannable) mWebTextView.getText(); 6778 Selection.setSelection(pword, start, end); 6779 // If the text entry has created more events, ignore 6780 // this one. 6781 } else if (msg.arg2 == mTextGeneration) { 6782 String text = (String) msg.obj; 6783 if (null == text) { 6784 text = ""; 6785 } 6786 mWebTextView.setTextAndKeepSelection(text); 6787 } 6788 } 6789 break; 6790 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6791 displaySoftKeyboard(true); 6792 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 6793 case UPDATE_TEXT_SELECTION_MSG_ID: 6794 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6795 (WebViewCore.TextSelectionData) msg.obj); 6796 break; 6797 case FORM_DID_BLUR: 6798 if (inEditingMode() 6799 && mWebTextView.isSameTextField(msg.arg1)) { 6800 hideSoftKeyboard(); 6801 } 6802 break; 6803 case RETURN_LABEL: 6804 if (inEditingMode() 6805 && mWebTextView.isSameTextField(msg.arg1)) { 6806 mWebTextView.setHint((String) msg.obj); 6807 InputMethodManager imm 6808 = InputMethodManager.peekInstance(); 6809 // The hint is propagated to the IME in 6810 // onCreateInputConnection. If the IME is already 6811 // active, restart it so that its hint text is updated. 6812 if (imm != null && imm.isActive(mWebTextView)) { 6813 imm.restartInput(mWebTextView); 6814 } 6815 } 6816 break; 6817 case UNHANDLED_NAV_KEY: 6818 navHandledKey(msg.arg1, 1, false, 0); 6819 break; 6820 case UPDATE_TEXT_ENTRY_MSG_ID: 6821 // this is sent after finishing resize in WebViewCore. Make 6822 // sure the text edit box is still on the screen. 6823 if (inEditingMode() && nativeCursorIsTextInput()) { 6824 mWebTextView.bringIntoView(); 6825 rebuildWebTextView(); 6826 } 6827 break; 6828 case CLEAR_TEXT_ENTRY: 6829 clearTextEntry(); 6830 break; 6831 case INVAL_RECT_MSG_ID: { 6832 Rect r = (Rect)msg.obj; 6833 if (r == null) { 6834 invalidate(); 6835 } else { 6836 // we need to scale r from content into view coords, 6837 // which viewInvalidate() does for us 6838 viewInvalidate(r.left, r.top, r.right, r.bottom); 6839 } 6840 break; 6841 } 6842 case REQUEST_FORM_DATA: 6843 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6844 if (mWebTextView.isSameTextField(msg.arg1)) { 6845 mWebTextView.setAdapterCustom(adapter); 6846 } 6847 break; 6848 case RESUME_WEBCORE_PRIORITY: 6849 WebViewCore.resumePriority(); 6850 WebViewCore.resumeUpdatePicture(mWebViewCore); 6851 break; 6852 6853 case LONG_PRESS_CENTER: 6854 // as this is shared by keydown and trackballdown, reset all 6855 // the states 6856 mGotCenterDown = false; 6857 mTrackballDown = false; 6858 performLongClick(); 6859 break; 6860 6861 case WEBCORE_NEED_TOUCH_EVENTS: 6862 mForwardTouchEvents = (msg.arg1 != 0); 6863 break; 6864 6865 case PREVENT_TOUCH_ID: 6866 if (inFullScreenMode()) { 6867 break; 6868 } 6869 if (msg.obj == null) { 6870 if (msg.arg1 == MotionEvent.ACTION_DOWN 6871 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6872 // if prevent default is called from WebCore, UI 6873 // will not handle the rest of the touch events any 6874 // more. 6875 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6876 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6877 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6878 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6879 // the return for the first ACTION_MOVE will decide 6880 // whether UI will handle touch or not. Currently no 6881 // support for alternating prevent default 6882 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6883 : PREVENT_DEFAULT_NO; 6884 } 6885 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6886 mTouchHighlightRegion.setEmpty(); 6887 } 6888 } else if (msg.arg2 == 0) { 6889 // prevent default is not called in WebCore, so the 6890 // message needs to be reprocessed in UI 6891 TouchEventData ted = (TouchEventData) msg.obj; 6892 switch (ted.mAction) { 6893 case MotionEvent.ACTION_DOWN: 6894 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 6895 - mScrollX; 6896 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 6897 - mScrollY; 6898 mDeferTouchMode = TOUCH_INIT_MODE; 6899 break; 6900 case MotionEvent.ACTION_MOVE: { 6901 // no snapping in defer process 6902 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 6903 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 6904 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6905 mDeferTouchMode = TOUCH_DRAG_MODE; 6906 mLastDeferTouchX = x; 6907 mLastDeferTouchY = y; 6908 startDrag(); 6909 } 6910 int deltaX = pinLocX((int) (mScrollX 6911 + mLastDeferTouchX - x)) 6912 - mScrollX; 6913 int deltaY = pinLocY((int) (mScrollY 6914 + mLastDeferTouchY - y)) 6915 - mScrollY; 6916 doDrag(deltaX, deltaY); 6917 if (deltaX != 0) mLastDeferTouchX = x; 6918 if (deltaY != 0) mLastDeferTouchY = y; 6919 break; 6920 } 6921 case MotionEvent.ACTION_UP: 6922 case MotionEvent.ACTION_CANCEL: 6923 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6924 // no fling in defer process 6925 mScroller.springBack(mScrollX, mScrollY, 0, 6926 computeMaxScrollX(), 0, 6927 computeMaxScrollY()); 6928 invalidate(); 6929 WebViewCore.resumePriority(); 6930 WebViewCore.resumeUpdatePicture(mWebViewCore); 6931 } 6932 mDeferTouchMode = TOUCH_DONE_MODE; 6933 break; 6934 case WebViewCore.ACTION_DOUBLETAP: 6935 // doDoubleTap() needs mLastTouchX/Y as anchor 6936 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 6937 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 6938 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6939 mDeferTouchMode = TOUCH_DONE_MODE; 6940 break; 6941 case WebViewCore.ACTION_LONGPRESS: 6942 HitTestResult hitTest = getHitTestResult(); 6943 if (hitTest != null && hitTest.mType 6944 != HitTestResult.UNKNOWN_TYPE) { 6945 performLongClick(); 6946 } 6947 mDeferTouchMode = TOUCH_DONE_MODE; 6948 break; 6949 } 6950 } 6951 break; 6952 6953 case REQUEST_KEYBOARD: 6954 if (msg.arg1 == 0) { 6955 hideSoftKeyboard(); 6956 } else { 6957 displaySoftKeyboard(false); 6958 } 6959 break; 6960 6961 case FIND_AGAIN: 6962 // Ignore if find has been dismissed. 6963 if (mFindIsUp && mFindCallback != null) { 6964 mFindCallback.findAll(); 6965 } 6966 break; 6967 6968 case DRAG_HELD_MOTIONLESS: 6969 mHeldMotionless = MOTIONLESS_TRUE; 6970 invalidate(); 6971 // fall through to keep scrollbars awake 6972 6973 case AWAKEN_SCROLL_BARS: 6974 if (mTouchMode == TOUCH_DRAG_MODE 6975 && mHeldMotionless == MOTIONLESS_TRUE) { 6976 awakenScrollBars(ViewConfiguration 6977 .getScrollDefaultDelay(), false); 6978 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6979 .obtainMessage(AWAKEN_SCROLL_BARS), 6980 ViewConfiguration.getScrollDefaultDelay()); 6981 } 6982 break; 6983 6984 case DO_MOTION_UP: 6985 doMotionUp(msg.arg1, msg.arg2); 6986 break; 6987 6988 case SHOW_FULLSCREEN: { 6989 View view = (View) msg.obj; 6990 int npp = msg.arg1; 6991 6992 if (inFullScreenMode()) { 6993 Log.w(LOGTAG, "Should not have another full screen."); 6994 dismissFullScreenMode(); 6995 } 6996 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 6997 mFullScreenHolder.setContentView(view); 6998 mFullScreenHolder.setCancelable(false); 6999 mFullScreenHolder.setCanceledOnTouchOutside(false); 7000 mFullScreenHolder.show(); 7001 7002 break; 7003 } 7004 case HIDE_FULLSCREEN: 7005 dismissFullScreenMode(); 7006 break; 7007 7008 case DOM_FOCUS_CHANGED: 7009 if (inEditingMode()) { 7010 nativeClearCursor(); 7011 rebuildWebTextView(); 7012 } 7013 break; 7014 7015 case SHOW_RECT_MSG_ID: { 7016 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7017 int x = mScrollX; 7018 int left = contentToViewX(data.mLeft); 7019 int width = contentToViewDimension(data.mWidth); 7020 int maxWidth = contentToViewDimension(data.mContentWidth); 7021 int viewWidth = getViewWidth(); 7022 if (width < viewWidth) { 7023 // center align 7024 x += left + width / 2 - mScrollX - viewWidth / 2; 7025 } else { 7026 x += (int) (left + data.mXPercentInDoc * width 7027 - mScrollX - data.mXPercentInView * viewWidth); 7028 } 7029 if (DebugFlags.WEB_VIEW) { 7030 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7031 width + ",maxWidth=" + maxWidth + 7032 ",viewWidth=" + viewWidth + ",x=" 7033 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7034 ",xPercentInView=" + data.mXPercentInView+ ")"); 7035 } 7036 // use the passing content width to cap x as the current 7037 // mContentWidth may not be updated yet 7038 x = Math.max(0, 7039 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7040 int top = contentToViewY(data.mTop); 7041 int height = contentToViewDimension(data.mHeight); 7042 int maxHeight = contentToViewDimension(data.mContentHeight); 7043 int viewHeight = getViewHeight(); 7044 int y = (int) (top + data.mYPercentInDoc * height - 7045 data.mYPercentInView * viewHeight); 7046 if (DebugFlags.WEB_VIEW) { 7047 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7048 height + ",maxHeight=" + maxHeight + 7049 ",viewHeight=" + viewHeight + ",y=" 7050 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7051 ",yPercentInView=" + data.mYPercentInView+ ")"); 7052 } 7053 // use the passing content height to cap y as the current 7054 // mContentHeight may not be updated yet 7055 y = Math.max(0, 7056 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7057 // We need to take into account the visible title height 7058 // when scrolling since y is an absolute view position. 7059 y = Math.max(0, y - getVisibleTitleHeight()); 7060 scrollTo(x, y); 7061 } 7062 break; 7063 7064 case CENTER_FIT_RECT: 7065 Rect r = (Rect)msg.obj; 7066 centerFitRect(r.left, r.top, r.width(), r.height()); 7067 break; 7068 7069 case SET_SCROLLBAR_MODES: 7070 mHorizontalScrollBarMode = msg.arg1; 7071 mVerticalScrollBarMode = msg.arg2; 7072 break; 7073 7074 case SELECTION_STRING_CHANGED: 7075 if (mAccessibilityInjector != null) { 7076 String selectionString = (String) msg.obj; 7077 mAccessibilityInjector.onSelectionStringChange(selectionString); 7078 } 7079 break; 7080 7081 case SET_TOUCH_HIGHLIGHT_RECTS: 7082 invalidate(mTouchHighlightRegion.getBounds()); 7083 mTouchHighlightRegion.setEmpty(); 7084 if (msg.obj != null) { 7085 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7086 for (Rect rect : rects) { 7087 Rect viewRect = contentToViewRect(rect); 7088 // some sites, like stories in nytimes.com, set 7089 // mouse event handler in the top div. It is not 7090 // user friendly to highlight the div if it covers 7091 // more than half of the screen. 7092 if (viewRect.width() < getWidth() >> 1 7093 || viewRect.height() < getHeight() >> 1) { 7094 mTouchHighlightRegion.union(viewRect); 7095 invalidate(viewRect); 7096 } else { 7097 Log.w(LOGTAG, "Skip the huge selection rect:" 7098 + viewRect); 7099 } 7100 } 7101 } 7102 break; 7103 7104 case SAVE_WEBARCHIVE_FINISHED: 7105 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7106 if (saveMessage.mCallback != null) { 7107 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7108 } 7109 break; 7110 7111 case SET_AUTOFILLABLE: 7112 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7113 if (mWebTextView != null) { 7114 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7115 rebuildWebTextView(); 7116 } 7117 break; 7118 7119 default: 7120 super.handleMessage(msg); 7121 break; 7122 } 7123 } 7124 } 7125 7126 /** 7127 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7128 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7129 */ 7130 private void updateTextSelectionFromMessage(int nodePointer, 7131 int textGeneration, WebViewCore.TextSelectionData data) { 7132 if (inEditingMode() 7133 && mWebTextView.isSameTextField(nodePointer) 7134 && textGeneration == mTextGeneration) { 7135 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7136 } 7137 } 7138 7139 // Class used to use a dropdown for a <select> element 7140 private class InvokeListBox implements Runnable { 7141 // Whether the listbox allows multiple selection. 7142 private boolean mMultiple; 7143 // Passed in to a list with multiple selection to tell 7144 // which items are selected. 7145 private int[] mSelectedArray; 7146 // Passed in to a list with single selection to tell 7147 // where the initial selection is. 7148 private int mSelection; 7149 7150 private Container[] mContainers; 7151 7152 // Need these to provide stable ids to my ArrayAdapter, 7153 // which normally does not have stable ids. (Bug 1250098) 7154 private class Container extends Object { 7155 /** 7156 * Possible values for mEnabled. Keep in sync with OptionStatus in 7157 * WebViewCore.cpp 7158 */ 7159 final static int OPTGROUP = -1; 7160 final static int OPTION_DISABLED = 0; 7161 final static int OPTION_ENABLED = 1; 7162 7163 String mString; 7164 int mEnabled; 7165 int mId; 7166 7167 public String toString() { 7168 return mString; 7169 } 7170 } 7171 7172 /** 7173 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7174 * and allow filtering. 7175 */ 7176 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7177 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7178 super(context, 7179 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7180 com.android.internal.R.layout.select_dialog_singlechoice, 7181 objects); 7182 } 7183 7184 @Override 7185 public View getView(int position, View convertView, 7186 ViewGroup parent) { 7187 // Always pass in null so that we will get a new CheckedTextView 7188 // Otherwise, an item which was previously used as an <optgroup> 7189 // element (i.e. has no check), could get used as an <option> 7190 // element, which needs a checkbox/radio, but it would not have 7191 // one. 7192 convertView = super.getView(position, null, parent); 7193 Container c = item(position); 7194 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7195 // ListView does not draw dividers between disabled and 7196 // enabled elements. Use a LinearLayout to provide dividers 7197 LinearLayout layout = new LinearLayout(mContext); 7198 layout.setOrientation(LinearLayout.VERTICAL); 7199 if (position > 0) { 7200 View dividerTop = new View(mContext); 7201 dividerTop.setBackgroundResource( 7202 android.R.drawable.divider_horizontal_bright); 7203 layout.addView(dividerTop); 7204 } 7205 7206 if (Container.OPTGROUP == c.mEnabled) { 7207 // Currently select_dialog_multichoice and 7208 // select_dialog_singlechoice are CheckedTextViews. If 7209 // that changes, the class cast will no longer be valid. 7210 Assert.assertTrue( 7211 convertView instanceof CheckedTextView); 7212 ((CheckedTextView) convertView).setCheckMarkDrawable( 7213 null); 7214 } else { 7215 // c.mEnabled == Container.OPTION_DISABLED 7216 // Draw the disabled element in a disabled state. 7217 convertView.setEnabled(false); 7218 } 7219 7220 layout.addView(convertView); 7221 if (position < getCount() - 1) { 7222 View dividerBottom = new View(mContext); 7223 dividerBottom.setBackgroundResource( 7224 android.R.drawable.divider_horizontal_bright); 7225 layout.addView(dividerBottom); 7226 } 7227 return layout; 7228 } 7229 return convertView; 7230 } 7231 7232 @Override 7233 public boolean hasStableIds() { 7234 // AdapterView's onChanged method uses this to determine whether 7235 // to restore the old state. Return false so that the old (out 7236 // of date) state does not replace the new, valid state. 7237 return false; 7238 } 7239 7240 private Container item(int position) { 7241 if (position < 0 || position >= getCount()) { 7242 return null; 7243 } 7244 return (Container) getItem(position); 7245 } 7246 7247 @Override 7248 public long getItemId(int position) { 7249 Container item = item(position); 7250 if (item == null) { 7251 return -1; 7252 } 7253 return item.mId; 7254 } 7255 7256 @Override 7257 public boolean areAllItemsEnabled() { 7258 return false; 7259 } 7260 7261 @Override 7262 public boolean isEnabled(int position) { 7263 Container item = item(position); 7264 if (item == null) { 7265 return false; 7266 } 7267 return Container.OPTION_ENABLED == item.mEnabled; 7268 } 7269 } 7270 7271 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7272 mMultiple = true; 7273 mSelectedArray = selected; 7274 7275 int length = array.length; 7276 mContainers = new Container[length]; 7277 for (int i = 0; i < length; i++) { 7278 mContainers[i] = new Container(); 7279 mContainers[i].mString = array[i]; 7280 mContainers[i].mEnabled = enabled[i]; 7281 mContainers[i].mId = i; 7282 } 7283 } 7284 7285 private InvokeListBox(String[] array, int[] enabled, int selection) { 7286 mSelection = selection; 7287 mMultiple = false; 7288 7289 int length = array.length; 7290 mContainers = new Container[length]; 7291 for (int i = 0; i < length; i++) { 7292 mContainers[i] = new Container(); 7293 mContainers[i].mString = array[i]; 7294 mContainers[i].mEnabled = enabled[i]; 7295 mContainers[i].mId = i; 7296 } 7297 } 7298 7299 /* 7300 * Whenever the data set changes due to filtering, this class ensures 7301 * that the checked item remains checked. 7302 */ 7303 private class SingleDataSetObserver extends DataSetObserver { 7304 private long mCheckedId; 7305 private ListView mListView; 7306 private Adapter mAdapter; 7307 7308 /* 7309 * Create a new observer. 7310 * @param id The ID of the item to keep checked. 7311 * @param l ListView for getting and clearing the checked states 7312 * @param a Adapter for getting the IDs 7313 */ 7314 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7315 mCheckedId = id; 7316 mListView = l; 7317 mAdapter = a; 7318 } 7319 7320 public void onChanged() { 7321 // The filter may have changed which item is checked. Find the 7322 // item that the ListView thinks is checked. 7323 int position = mListView.getCheckedItemPosition(); 7324 long id = mAdapter.getItemId(position); 7325 if (mCheckedId != id) { 7326 // Clear the ListView's idea of the checked item, since 7327 // it is incorrect 7328 mListView.clearChoices(); 7329 // Search for mCheckedId. If it is in the filtered list, 7330 // mark it as checked 7331 int count = mAdapter.getCount(); 7332 for (int i = 0; i < count; i++) { 7333 if (mAdapter.getItemId(i) == mCheckedId) { 7334 mListView.setItemChecked(i, true); 7335 break; 7336 } 7337 } 7338 } 7339 } 7340 7341 public void onInvalidate() {} 7342 } 7343 7344 public void run() { 7345 final ListView listView = (ListView) LayoutInflater.from(mContext) 7346 .inflate(com.android.internal.R.layout.select_dialog, null); 7347 final MyArrayListAdapter adapter = new 7348 MyArrayListAdapter(mContext, mContainers, mMultiple); 7349 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7350 .setView(listView).setCancelable(true) 7351 .setInverseBackgroundForced(true); 7352 7353 if (mMultiple) { 7354 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7355 public void onClick(DialogInterface dialog, int which) { 7356 mWebViewCore.sendMessage( 7357 EventHub.LISTBOX_CHOICES, 7358 adapter.getCount(), 0, 7359 listView.getCheckedItemPositions()); 7360 }}); 7361 b.setNegativeButton(android.R.string.cancel, 7362 new DialogInterface.OnClickListener() { 7363 public void onClick(DialogInterface dialog, int which) { 7364 mWebViewCore.sendMessage( 7365 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7366 }}); 7367 } 7368 mListBoxDialog = b.create(); 7369 listView.setAdapter(adapter); 7370 listView.setFocusableInTouchMode(true); 7371 // There is a bug (1250103) where the checks in a ListView with 7372 // multiple items selected are associated with the positions, not 7373 // the ids, so the items do not properly retain their checks when 7374 // filtered. Do not allow filtering on multiple lists until 7375 // that bug is fixed. 7376 7377 listView.setTextFilterEnabled(!mMultiple); 7378 if (mMultiple) { 7379 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7380 int length = mSelectedArray.length; 7381 for (int i = 0; i < length; i++) { 7382 listView.setItemChecked(mSelectedArray[i], true); 7383 } 7384 } else { 7385 listView.setOnItemClickListener(new OnItemClickListener() { 7386 public void onItemClick(AdapterView parent, View v, 7387 int position, long id) { 7388 mWebViewCore.sendMessage( 7389 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 7390 mListBoxDialog.dismiss(); 7391 mListBoxDialog = null; 7392 } 7393 }); 7394 if (mSelection != -1) { 7395 listView.setSelection(mSelection); 7396 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7397 listView.setItemChecked(mSelection, true); 7398 DataSetObserver observer = new SingleDataSetObserver( 7399 adapter.getItemId(mSelection), listView, adapter); 7400 adapter.registerDataSetObserver(observer); 7401 } 7402 } 7403 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7404 public void onCancel(DialogInterface dialog) { 7405 mWebViewCore.sendMessage( 7406 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7407 mListBoxDialog = null; 7408 } 7409 }); 7410 mListBoxDialog.show(); 7411 } 7412 } 7413 7414 /* 7415 * Request a dropdown menu for a listbox with multiple selection. 7416 * 7417 * @param array Labels for the listbox. 7418 * @param enabledArray State for each element in the list. See static 7419 * integers in Container class. 7420 * @param selectedArray Which positions are initally selected. 7421 */ 7422 void requestListBox(String[] array, int[] enabledArray, int[] 7423 selectedArray) { 7424 mPrivateHandler.post( 7425 new InvokeListBox(array, enabledArray, selectedArray)); 7426 } 7427 7428 /* 7429 * Request a dropdown menu for a listbox with single selection or a single 7430 * <select> element. 7431 * 7432 * @param array Labels for the listbox. 7433 * @param enabledArray State for each element in the list. See static 7434 * integers in Container class. 7435 * @param selection Which position is initally selected. 7436 */ 7437 void requestListBox(String[] array, int[] enabledArray, int selection) { 7438 mPrivateHandler.post( 7439 new InvokeListBox(array, enabledArray, selection)); 7440 } 7441 7442 // called by JNI 7443 private void sendMoveFocus(int frame, int node) { 7444 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7445 new WebViewCore.CursorData(frame, node, 0, 0)); 7446 } 7447 7448 // called by JNI 7449 private void sendMoveMouse(int frame, int node, int x, int y) { 7450 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7451 new WebViewCore.CursorData(frame, node, x, y)); 7452 } 7453 7454 /* 7455 * Send a mouse move event to the webcore thread. 7456 * 7457 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7458 * which wants key events, but it is not the focus. This 7459 * will make the visual appear as though nothing is in 7460 * focus. Remove the WebTextView, if present, and stop 7461 * drawing the blinking caret. 7462 * called by JNI 7463 */ 7464 private void sendMoveMouseIfLatest(boolean removeFocus) { 7465 if (removeFocus) { 7466 clearTextEntry(); 7467 } 7468 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7469 cursorData()); 7470 } 7471 7472 // called by JNI 7473 private void sendMotionUp(int touchGeneration, 7474 int frame, int node, int x, int y) { 7475 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7476 touchUpData.mMoveGeneration = touchGeneration; 7477 touchUpData.mFrame = frame; 7478 touchUpData.mNode = node; 7479 touchUpData.mX = x; 7480 touchUpData.mY = y; 7481 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7482 } 7483 7484 7485 private int getScaledMaxXScroll() { 7486 int width; 7487 if (mHeightCanMeasure == false) { 7488 width = getViewWidth() / 4; 7489 } else { 7490 Rect visRect = new Rect(); 7491 calcOurVisibleRect(visRect); 7492 width = visRect.width() / 2; 7493 } 7494 // FIXME the divisor should be retrieved from somewhere 7495 return viewToContentX(width); 7496 } 7497 7498 private int getScaledMaxYScroll() { 7499 int height; 7500 if (mHeightCanMeasure == false) { 7501 height = getViewHeight() / 4; 7502 } else { 7503 Rect visRect = new Rect(); 7504 calcOurVisibleRect(visRect); 7505 height = visRect.height() / 2; 7506 } 7507 // FIXME the divisor should be retrieved from somewhere 7508 // the closest thing today is hard-coded into ScrollView.java 7509 // (from ScrollView.java, line 363) int maxJump = height/2; 7510 return Math.round(height * mZoomManager.getInvScale()); 7511 } 7512 7513 /** 7514 * Called by JNI to invalidate view 7515 */ 7516 private void viewInvalidate() { 7517 invalidate(); 7518 } 7519 7520 /** 7521 * Pass the key directly to the page. This assumes that 7522 * nativePageShouldHandleShiftAndArrows() returned true. 7523 */ 7524 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 7525 int keyEventAction; 7526 int eventHubAction; 7527 if (down) { 7528 keyEventAction = KeyEvent.ACTION_DOWN; 7529 eventHubAction = EventHub.KEY_DOWN; 7530 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7531 } else { 7532 keyEventAction = KeyEvent.ACTION_UP; 7533 eventHubAction = EventHub.KEY_UP; 7534 } 7535 7536 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7537 1, (metaState & KeyEvent.META_SHIFT_ON) 7538 | (metaState & KeyEvent.META_ALT_ON) 7539 | (metaState & KeyEvent.META_SYM_ON) 7540 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 7541 mWebViewCore.sendMessage(eventHubAction, event); 7542 } 7543 7544 // return true if the key was handled 7545 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7546 long time) { 7547 if (mNativeClass == 0) { 7548 return false; 7549 } 7550 mLastCursorTime = time; 7551 mLastCursorBounds = nativeGetCursorRingBounds(); 7552 boolean keyHandled 7553 = nativeMoveCursor(keyCode, count, noScroll) == false; 7554 if (DebugFlags.WEB_VIEW) { 7555 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7556 + " mLastCursorTime=" + mLastCursorTime 7557 + " handled=" + keyHandled); 7558 } 7559 if (keyHandled == false || mHeightCanMeasure == false) { 7560 return keyHandled; 7561 } 7562 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7563 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7564 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7565 Rect visRect = new Rect(); 7566 calcOurVisibleRect(visRect); 7567 Rect outset = new Rect(visRect); 7568 int maxXScroll = visRect.width() / 2; 7569 int maxYScroll = visRect.height() / 2; 7570 outset.inset(-maxXScroll, -maxYScroll); 7571 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7572 return keyHandled; 7573 } 7574 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7575 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7576 maxXScroll); 7577 if (maxH > 0) { 7578 pinScrollBy(maxH, 0, true, 0); 7579 } else { 7580 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7581 -maxXScroll); 7582 if (maxH < 0) { 7583 pinScrollBy(maxH, 0, true, 0); 7584 } 7585 } 7586 if (mLastCursorBounds.isEmpty()) return keyHandled; 7587 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7588 return keyHandled; 7589 } 7590 if (DebugFlags.WEB_VIEW) { 7591 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7592 + contentCursorRingBounds); 7593 } 7594 requestRectangleOnScreen(viewCursorRingBounds); 7595 mUserScroll = true; 7596 return keyHandled; 7597 } 7598 7599 /** 7600 * @return If the page should receive Shift and arrows. 7601 */ 7602 private boolean pageShouldHandleShiftAndArrows() { 7603 // TODO: Maybe the injected script should announce its presence in 7604 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 7605 // will check that as one of the conditions it looks for 7606 return (nativePageShouldHandleShiftAndArrows() || mAccessibilityScriptInjected); 7607 } 7608 7609 /** 7610 * Set the background color. It's white by default. Pass 7611 * zero to make the view transparent. 7612 * @param color the ARGB color described by Color.java 7613 */ 7614 public void setBackgroundColor(int color) { 7615 mBackgroundColor = color; 7616 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7617 } 7618 7619 public void debugDump() { 7620 nativeDebugDump(); 7621 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7622 } 7623 7624 /** 7625 * Draw the HTML page into the specified canvas. This call ignores any 7626 * view-specific zoom, scroll offset, or other changes. It does not draw 7627 * any view-specific chrome, such as progress or URL bars. 7628 * 7629 * @hide only needs to be accessible to Browser and testing 7630 */ 7631 public void drawPage(Canvas canvas) { 7632 nativeDraw(canvas, 0, 0, false); 7633 } 7634 7635 /** 7636 * Set the time to wait between passing touches to WebCore. See also the 7637 * TOUCH_SENT_INTERVAL member for further discussion. 7638 * 7639 * @hide This is only used by the DRT test application. 7640 */ 7641 public void setTouchInterval(int interval) { 7642 mCurrentTouchInterval = interval; 7643 } 7644 7645 /** 7646 * Toggle whether multi touch events should be sent to webkit 7647 * no matter if UI wants to handle it first. 7648 * 7649 * @hide This is only used by the webkit layout test. 7650 */ 7651 public void setDeferMultiTouch(boolean value) { 7652 mDeferMultitouch = value; 7653 Log.v(LOGTAG, "set mDeferMultitouch to " + value); 7654 } 7655 7656 /** 7657 * Update our cache with updatedText. 7658 * @param updatedText The new text to put in our cache. 7659 */ 7660 /* package */ void updateCachedTextfield(String updatedText) { 7661 // Also place our generation number so that when we look at the cache 7662 // we recognize that it is up to date. 7663 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7664 } 7665 7666 /*package*/ void autoFillForm(int autoFillQueryId) { 7667 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 7668 } 7669 7670 private native int nativeCacheHitFramePointer(); 7671 private native Rect nativeCacheHitNodeBounds(); 7672 private native int nativeCacheHitNodePointer(); 7673 /* package */ native void nativeClearCursor(); 7674 private native void nativeCreate(int ptr); 7675 private native int nativeCursorFramePointer(); 7676 private native Rect nativeCursorNodeBounds(); 7677 private native int nativeCursorNodePointer(); 7678 /* package */ native boolean nativeCursorMatchesFocus(); 7679 private native boolean nativeCursorIntersects(Rect visibleRect); 7680 private native boolean nativeCursorIsAnchor(); 7681 private native boolean nativeCursorIsTextInput(); 7682 private native Point nativeCursorPosition(); 7683 private native String nativeCursorText(); 7684 /** 7685 * Returns true if the native cursor node says it wants to handle key events 7686 * (ala plugins). This can only be called if mNativeClass is non-zero! 7687 */ 7688 private native boolean nativeCursorWantsKeyEvents(); 7689 private native void nativeDebugDump(); 7690 private native void nativeDestroy(); 7691 7692 /** 7693 * Draw the picture set with a background color and extra. If 7694 * "splitIfNeeded" is true and the return value is not 0, the return value 7695 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 7696 * native allocation can be freed. 7697 */ 7698 private native int nativeDraw(Canvas canvas, int color, int extra, 7699 boolean splitIfNeeded); 7700 private native void nativeDumpDisplayTree(String urlOrNull); 7701 private native boolean nativeEvaluateLayersAnimations(); 7702 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 7703 private native void nativeExtendSelection(int x, int y); 7704 private native int nativeFindAll(String findLower, String findUpper, 7705 boolean sameAsLastSearch); 7706 private native void nativeFindNext(boolean forward); 7707 /* package */ native int nativeFocusCandidateFramePointer(); 7708 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7709 /* package */ native boolean nativeFocusCandidateIsPassword(); 7710 private native boolean nativeFocusCandidateIsRtlText(); 7711 private native boolean nativeFocusCandidateIsTextInput(); 7712 /* package */ native int nativeFocusCandidateMaxLength(); 7713 /* package */ native String nativeFocusCandidateName(); 7714 private native Rect nativeFocusCandidateNodeBounds(); 7715 /** 7716 * @return A Rect with left, top, right, bottom set to the corresponding 7717 * padding values in the focus candidate, if it is a textfield/textarea with 7718 * a style. Otherwise return null. This is not actually a rectangle; Rect 7719 * is being used to pass four integers. 7720 */ 7721 private native Rect nativeFocusCandidatePaddingRect(); 7722 /* package */ native int nativeFocusCandidatePointer(); 7723 private native String nativeFocusCandidateText(); 7724 /* package */ native float nativeFocusCandidateTextSize(); 7725 /* package */ native int nativeFocusCandidateLineHeight(); 7726 /** 7727 * Returns an integer corresponding to WebView.cpp::type. 7728 * See WebTextView.setType() 7729 */ 7730 private native int nativeFocusCandidateType(); 7731 private native boolean nativeFocusIsPlugin(); 7732 private native Rect nativeFocusNodeBounds(); 7733 /* package */ native int nativeFocusNodePointer(); 7734 private native Rect nativeGetCursorRingBounds(); 7735 private native String nativeGetSelection(); 7736 private native boolean nativeHasCursorNode(); 7737 private native boolean nativeHasFocusNode(); 7738 private native void nativeHideCursor(); 7739 private native boolean nativeHitSelection(int x, int y); 7740 private native String nativeImageURI(int x, int y); 7741 private native void nativeInstrumentReport(); 7742 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7743 // return true if the page has been scrolled 7744 private native boolean nativeMotionUp(int x, int y, int slop); 7745 // returns false if it handled the key 7746 private native boolean nativeMoveCursor(int keyCode, int count, 7747 boolean noScroll); 7748 private native int nativeMoveGeneration(); 7749 private native void nativeMoveSelection(int x, int y); 7750 /** 7751 * @return true if the page should get the shift and arrow keys, rather 7752 * than select text/navigation. 7753 * 7754 * If the focus is a plugin, or if the focus and cursor match and are 7755 * a contentEditable element, then the page should handle these keys. 7756 */ 7757 private native boolean nativePageShouldHandleShiftAndArrows(); 7758 private native boolean nativePointInNavCache(int x, int y, int slop); 7759 // Like many other of our native methods, you must make sure that 7760 // mNativeClass is not null before calling this method. 7761 private native void nativeRecordButtons(boolean focused, 7762 boolean pressed, boolean invalidate); 7763 private native void nativeResetSelection(); 7764 private native void nativeSelectAll(); 7765 private native void nativeSelectBestAt(Rect rect); 7766 private native int nativeSelectionX(); 7767 private native int nativeSelectionY(); 7768 private native int nativeFindIndex(); 7769 private native void nativeSetExtendSelection(); 7770 private native void nativeSetFindIsEmpty(); 7771 private native void nativeSetFindIsUp(boolean isUp); 7772 private native void nativeSetHeightCanMeasure(boolean measure); 7773 private native void nativeSetBaseLayer(int layer, Rect invalRect); 7774 private native void nativeShowCursorTimed(); 7775 private native void nativeReplaceBaseContent(int content); 7776 private native void nativeCopyBaseContentToPicture(Picture pict); 7777 private native boolean nativeHasContent(); 7778 private native void nativeSetSelectionPointer(boolean set, 7779 float scale, int x, int y); 7780 private native boolean nativeStartSelection(int x, int y); 7781 private native Rect nativeSubtractLayers(Rect content); 7782 private native int nativeTextGeneration(); 7783 // Never call this version except by updateCachedTextfield(String) - 7784 // we always want to pass in our generation number. 7785 private native void nativeUpdateCachedTextfield(String updatedText, 7786 int generation); 7787 private native boolean nativeWordSelection(int x, int y); 7788 // return NO_LEFTEDGE means failure. 7789 static final int NO_LEFTEDGE = -1; 7790 native int nativeGetBlockLeftEdge(int x, int y, float scale); 7791 7792 // Returns a pointer to the scrollable LayerAndroid at the given point. 7793 private native int nativeScrollableLayer(int x, int y); 7794 private native boolean nativeScrollLayer(int layer, int dx, int dy); 7795} 7796