WebView.java revision a3ebcc9d2ea15614529e112880e1d16e81a178e1
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 android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.Context; 22import android.content.DialogInterface; 23import android.content.Intent; 24import android.content.DialogInterface.OnCancelListener; 25import android.database.DataSetObserver; 26import android.graphics.Bitmap; 27import android.graphics.Canvas; 28import android.graphics.Color; 29import android.graphics.CornerPathEffect; 30import android.graphics.DrawFilter; 31import android.graphics.Interpolator; 32import android.graphics.Paint; 33import android.graphics.PaintFlagsDrawFilter; 34import android.graphics.Picture; 35import android.graphics.Point; 36import android.graphics.Rect; 37import android.graphics.RectF; 38import android.graphics.Region; 39import android.graphics.drawable.Drawable; 40import android.net.Uri; 41import android.net.http.SslCertificate; 42import android.os.Bundle; 43import android.os.Handler; 44import android.os.Message; 45import android.os.ServiceManager; 46import android.os.SystemClock; 47import android.speech.tts.TextToSpeech; 48import android.text.IClipboard; 49import android.text.Selection; 50import android.text.Spannable; 51import android.util.AttributeSet; 52import android.util.EventLog; 53import android.util.Log; 54import android.util.TypedValue; 55import android.view.Gravity; 56import android.view.KeyEvent; 57import android.view.LayoutInflater; 58import android.view.MotionEvent; 59import android.view.ScaleGestureDetector; 60import android.view.SoundEffectConstants; 61import android.view.VelocityTracker; 62import android.view.View; 63import android.view.ViewConfiguration; 64import android.view.ViewGroup; 65import android.view.ViewTreeObserver; 66import android.view.accessibility.AccessibilityManager; 67import android.view.inputmethod.EditorInfo; 68import android.view.inputmethod.InputConnection; 69import android.view.inputmethod.InputMethodManager; 70import android.webkit.WebTextView.AutoCompleteAdapter; 71import android.webkit.WebViewCore.EventHub; 72import android.webkit.WebViewCore.TouchEventData; 73import android.webkit.WebViewCore.TouchHighlightData; 74import android.widget.AbsoluteLayout; 75import android.widget.Adapter; 76import android.widget.AdapterView; 77import android.widget.ArrayAdapter; 78import android.widget.CheckedTextView; 79import android.widget.LinearLayout; 80import android.widget.ListView; 81import android.widget.Scroller; 82import android.widget.Toast; 83import android.widget.AdapterView.OnItemClickListener; 84 85import java.io.File; 86import java.io.FileInputStream; 87import java.io.FileNotFoundException; 88import java.io.FileOutputStream; 89import java.net.URLDecoder; 90import java.util.ArrayList; 91import java.util.HashMap; 92import java.util.List; 93import java.util.Map; 94import java.util.Set; 95 96import junit.framework.Assert; 97 98/** 99 * <p>A View that displays web pages. This class is the basis upon which you 100 * can roll your own web browser or simply display some online content within your Activity. 101 * It uses the WebKit rendering engine to display 102 * web pages and includes methods to navigate forward and backward 103 * through a history, zoom in and out, perform text searches and more.</p> 104 * <p>To enable the built-in zoom, set 105 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 106 * (introduced in API version 3). 107 * <p>Note that, in order for your Activity to access the Internet and load web pages 108 * in a WebView, you must add the {@code INTERNET} permissions to your 109 * Android Manifest file:</p> 110 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 111 * 112 * <p>This must be a child of the <a 113 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 114 * element.</p> 115 * 116 * <h3>Basic usage</h3> 117 * 118 * <p>By default, a WebView provides no browser-like widgets, does not 119 * enable JavaScript and web page errors are ignored. If your goal is only 120 * to display some HTML as a part of your UI, this is probably fine; 121 * the user won't need to interact with the web page beyond reading 122 * it, and the web page won't need to interact with the user. If you 123 * actually want a full-blown web browser, then you probably want to 124 * invoke the Browser application with a URL Intent rather than show it 125 * with a WebView. For example: 126 * <pre> 127 * Uri uri = Uri.parse("http://www.example.com"); 128 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 129 * startActivity(intent); 130 * </pre> 131 * <p>See {@link android.content.Intent} for more information.</p> 132 * 133 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 134 * or set the entire Activity window as a WebView during {@link 135 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 136 * <pre class="prettyprint"> 137 * WebView webview = new WebView(this); 138 * setContentView(webview); 139 * </pre> 140 * 141 * <p>Then load the desired web page:</p> 142 * <pre> 143 * // Simplest usage: note that an exception will NOT be thrown 144 * // if there is an error loading this page (see below). 145 * webview.loadUrl("http://slashdot.org/"); 146 * 147 * // OR, you can also load from an HTML string: 148 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 149 * webview.loadData(summary, "text/html", "utf-8"); 150 * // ... although note that there are restrictions on what this HTML can do. 151 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 152 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 153 * </pre> 154 * 155 * <p>A WebView has several customization points where you can add your 156 * own behavior. These are:</p> 157 * 158 * <ul> 159 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 160 * This class is called when something that might impact a 161 * browser UI happens, for instance, progress updates and 162 * JavaScript alerts are sent here (see <a 163 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 164 * </li> 165 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 166 * It will be called when things happen that impact the 167 * rendering of the content, eg, errors or form submissions. You 168 * can also intercept URL loading here (via {@link 169 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 170 * shouldOverrideUrlLoading()}).</li> 171 * <li>Modifying the {@link android.webkit.WebSettings}, such as 172 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 173 * setJavaScriptEnabled()}. </li> 174 * <li>Adding JavaScript-to-Java interfaces with the {@link 175 * android.webkit.WebView#addJavascriptInterface} method. 176 * This lets you bind Java objects into the WebView so they can be 177 * controlled from the web pages JavaScript.</li> 178 * </ul> 179 * 180 * <p>Here's a more complicated example, showing error handling, 181 * settings, and progress notification:</p> 182 * 183 * <pre class="prettyprint"> 184 * // Let's display the progress in the activity title bar, like the 185 * // browser app does. 186 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 187 * 188 * webview.getSettings().setJavaScriptEnabled(true); 189 * 190 * final Activity activity = this; 191 * webview.setWebChromeClient(new WebChromeClient() { 192 * public void onProgressChanged(WebView view, int progress) { 193 * // Activities and WebViews measure progress with different scales. 194 * // The progress meter will automatically disappear when we reach 100% 195 * activity.setProgress(progress * 1000); 196 * } 197 * }); 198 * webview.setWebViewClient(new WebViewClient() { 199 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 200 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 201 * } 202 * }); 203 * 204 * webview.loadUrl("http://slashdot.org/"); 205 * </pre> 206 * 207 * <h3>Cookie and window management</h3> 208 * 209 * <p>For obvious security reasons, your application has its own 210 * cache, cookie store etc.—it does not share the Browser 211 * application's data. Cookies are managed on a separate thread, so 212 * operations like index building don't block the UI 213 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 214 * if you want to use cookies in your application. 215 * </p> 216 * 217 * <p>By default, requests by the HTML to open new windows are 218 * ignored. This is true whether they be opened by JavaScript or by 219 * the target attribute on a link. You can customize your 220 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 221 * and render them in whatever manner you want.</p> 222 * 223 * <p>The standard behavior for an Activity is to be destroyed and 224 * recreated when the device orientation or any other configuration changes. This will cause 225 * the WebView to reload the current page. If you don't want that, you 226 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 227 * changes, and then just leave the WebView alone. It'll automatically 228 * re-orient itself as appropriate. Read <a 229 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 230 * more information about how to handle configuration changes during runtime.</p> 231 * 232 * 233 * <h3>Building web pages to support different screen densities</h3> 234 * 235 * <p>The screen density of a device is based on the screen resolution. A screen with low density 236 * has fewer available pixels per inch, where a screen with high density 237 * has more — sometimes significantly more — pixels per inch. The density of a 238 * screen is important because, other things being equal, a UI element (such as a button) whose 239 * height and width are defined in terms of screen pixels will appear larger on the lower density 240 * screen and smaller on the higher density screen. 241 * For simplicity, Android collapses all actual screen densities into three generalized densities: 242 * high, medium, and low.</p> 243 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 244 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 245 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 246 * are bigger). 247 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 248 * you (as a web developer) target screens with different screen densities.</p> 249 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 250 * <ul> 251 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 252 * default scaling factor used for the current device. For example, if the value of {@code 253 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 254 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 255 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 256 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 257 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 258 * (discussed below), then you can stop this default scaling behavior.</li> 259 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 260 * densities for which this style sheet is to be used. The corresponding value should be either 261 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 262 * density, or high density screens, respectively. For example: 263 * <pre> 264 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 265 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 266 * which is the high density pixel ratio.</p> 267 * </li> 268 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 269 * this to specify the target density for which the web page is designed, using the following 270 * values: 271 * <ul> 272 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 273 * occurs.</li> 274 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 275 * as appropriate.</li> 276 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 277 * low density screens scale down. This is also the default behavior.</li> 278 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 279 * as appropriate.</li> 280 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 281 * values are 70-400).</li> 282 * </ul> 283 * <p>Here's an example meta tag to specify the target density:</p> 284 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 285 * </ul> 286 * <p>If you want to modify your web page for different densities, by using the {@code 287 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 288 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 289 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 290 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 291 * 292 * 293 */ 294@Widget 295public class WebView extends AbsoluteLayout 296 implements ViewTreeObserver.OnGlobalFocusChangeListener, 297 ViewGroup.OnHierarchyChangeListener { 298 299 // enable debug output for drag trackers 300 private static final boolean DEBUG_DRAG_TRACKER = false; 301 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 302 // the screen all-the-time. Good for profiling our drawing code 303 static private final boolean AUTO_REDRAW_HACK = false; 304 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 305 private boolean mAutoRedraw; 306 307 static final String LOGTAG = "webview"; 308 309 private ZoomManager mZoomManager; 310 311 /** 312 * Transportation object for returning WebView across thread boundaries. 313 */ 314 public class WebViewTransport { 315 private WebView mWebview; 316 317 /** 318 * Set the WebView to the transportation object. 319 * @param webview The WebView to transport. 320 */ 321 public synchronized void setWebView(WebView webview) { 322 mWebview = webview; 323 } 324 325 /** 326 * Return the WebView object. 327 * @return WebView The transported WebView object. 328 */ 329 public synchronized WebView getWebView() { 330 return mWebview; 331 } 332 } 333 334 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 335 private final CallbackProxy mCallbackProxy; 336 337 private final WebViewDatabase mDatabase; 338 339 // SSL certificate for the main top-level page (if secure) 340 private SslCertificate mCertificate; 341 342 // Native WebView pointer that is 0 until the native object has been 343 // created. 344 private int mNativeClass; 345 // This would be final but it needs to be set to null when the WebView is 346 // destroyed. 347 private WebViewCore mWebViewCore; 348 // Handler for dispatching UI messages. 349 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 350 private WebTextView mWebTextView; 351 // Used to ignore changes to webkit text that arrives to the UI side after 352 // more key events. 353 private int mTextGeneration; 354 355 /* package */ void incrementTextGeneration() { mTextGeneration++; } 356 357 // Used by WebViewCore to create child views. 358 /* package */ final ViewManager mViewManager; 359 360 // Used to display in full screen mode 361 PluginFullScreenHolder mFullScreenHolder; 362 363 /** 364 * Position of the last touch event. 365 */ 366 private float mLastTouchX; 367 private float mLastTouchY; 368 369 /** 370 * Time of the last touch event. 371 */ 372 private long mLastTouchTime; 373 374 /** 375 * Time of the last time sending touch event to WebViewCore 376 */ 377 private long mLastSentTouchTime; 378 379 /** 380 * The minimum elapsed time before sending another ACTION_MOVE event to 381 * WebViewCore. This really should be tuned for each type of the devices. 382 * For example in Google Map api test case, it takes Dream device at least 383 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 384 * triggering the layout and drawing the picture. While the same process 385 * takes 60+ms on the current high speed device. If we make 386 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 387 * to WebViewCore queue and the real layout and draw events will be pushed 388 * to further, which slows down the refresh rate. Choose 50 to favor the 389 * current high speed devices. For Dream like devices, 100 is a better 390 * choice. Maybe make this in the buildspec later. 391 */ 392 private static final int TOUCH_SENT_INTERVAL = 50; 393 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 394 395 /** 396 * Helper class to get velocity for fling 397 */ 398 VelocityTracker mVelocityTracker; 399 private int mMaximumFling; 400 private float mLastVelocity; 401 private float mLastVelX; 402 private float mLastVelY; 403 404 // A pointer to the native scrollable layer when dragging layers. Only 405 // valid when mTouchMode is TOUCH_DRAG_LAYER_MODE. 406 private int mScrollingLayer; 407 408 // only trigger accelerated fling if the new velocity is at least 409 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 410 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 411 412 /** 413 * Touch mode 414 */ 415 private int mTouchMode = TOUCH_DONE_MODE; 416 private static final int TOUCH_INIT_MODE = 1; 417 private static final int TOUCH_DRAG_START_MODE = 2; 418 private static final int TOUCH_DRAG_MODE = 3; 419 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 420 private static final int TOUCH_SHORTPRESS_MODE = 5; 421 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 422 private static final int TOUCH_DONE_MODE = 7; 423 private static final int TOUCH_PINCH_DRAG = 8; 424 private static final int TOUCH_DRAG_LAYER_MODE = 9; 425 426 // Whether to forward the touch events to WebCore 427 private boolean mForwardTouchEvents = false; 428 429 // Whether to prevent default during touch. The initial value depends on 430 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 431 // for touch down. Otherwise UI will wait for the answer of the first 432 // confirmed move before taking over the control. 433 private static final int PREVENT_DEFAULT_NO = 0; 434 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 435 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 436 private static final int PREVENT_DEFAULT_YES = 3; 437 private static final int PREVENT_DEFAULT_IGNORE = 4; 438 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 439 440 // true when the touch movement exceeds the slop 441 private boolean mConfirmMove; 442 443 // if true, touch events will be first processed by WebCore, if prevent 444 // default is not set, the UI will continue handle them. 445 private boolean mDeferTouchProcess; 446 447 // to avoid interfering with the current touch events, track them 448 // separately. Currently no snapping or fling in the deferred process mode 449 private int mDeferTouchMode = TOUCH_DONE_MODE; 450 private float mLastDeferTouchX; 451 private float mLastDeferTouchY; 452 453 // To keep track of whether the current drag was initiated by a WebTextView, 454 // so that we know not to hide the cursor 455 boolean mDragFromTextInput; 456 457 // Whether or not to draw the cursor ring. 458 private boolean mDrawCursorRing = true; 459 460 // true if onPause has been called (and not onResume) 461 private boolean mIsPaused; 462 463 /** 464 * Customizable constant 465 */ 466 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 467 private int mTouchSlopSquare; 468 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 469 private int mDoubleTapSlopSquare; 470 // pre-computed density adjusted navigation slop 471 private int mNavSlop; 472 // This should be ViewConfiguration.getTapTimeout() 473 // But system time out is 100ms, which is too short for the browser. 474 // In the browser, if it switches out of tap too soon, jump tap won't work. 475 private static final int TAP_TIMEOUT = 200; 476 // This should be ViewConfiguration.getLongPressTimeout() 477 // But system time out is 500ms, which is too short for the browser. 478 // With a short timeout, it's difficult to treat trigger a short press. 479 private static final int LONG_PRESS_TIMEOUT = 1000; 480 // needed to avoid flinging after a pause of no movement 481 private static final int MIN_FLING_TIME = 250; 482 // draw unfiltered after drag is held without movement 483 private static final int MOTIONLESS_TIME = 100; 484 // The amount of content to overlap between two screens when going through 485 // pages with the space bar, in pixels. 486 private static final int PAGE_SCROLL_OVERLAP = 24; 487 488 /** 489 * These prevent calling requestLayout if either dimension is fixed. This 490 * depends on the layout parameters and the measure specs. 491 */ 492 boolean mWidthCanMeasure; 493 boolean mHeightCanMeasure; 494 495 // Remember the last dimensions we sent to the native side so we can avoid 496 // sending the same dimensions more than once. 497 int mLastWidthSent; 498 int mLastHeightSent; 499 500 private int mContentWidth; // cache of value from WebViewCore 501 private int mContentHeight; // cache of value from WebViewCore 502 503 // Need to have the separate control for horizontal and vertical scrollbar 504 // style than the View's single scrollbar style 505 private boolean mOverlayHorizontalScrollbar = true; 506 private boolean mOverlayVerticalScrollbar = false; 507 508 // our standard speed. this way small distances will be traversed in less 509 // time than large distances, but we cap the duration, so that very large 510 // distances won't take too long to get there. 511 private static final int STD_SPEED = 480; // pixels per second 512 // time for the longest scroll animation 513 private static final int MAX_DURATION = 750; // milliseconds 514 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 515 private Scroller mScroller; 516 517 private boolean mWrapContent; 518 private static final int MOTIONLESS_FALSE = 0; 519 private static final int MOTIONLESS_PENDING = 1; 520 private static final int MOTIONLESS_TRUE = 2; 521 private static final int MOTIONLESS_IGNORE = 3; 522 private int mHeldMotionless; 523 524 // An instance for injecting accessibility in WebViews with disabled 525 // JavaScript or ones for which no accessibility script exists 526 private AccessibilityInjector mAccessibilityInjector; 527 528 // the color used to highlight the touch rectangles 529 private static final int mHightlightColor = 0x33000000; 530 // the round corner for the highlight path 531 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 532 // the region indicating where the user touched on the screen 533 private Region mTouchHighlightRegion = new Region(); 534 // the paint for the touch highlight 535 private Paint mTouchHightlightPaint; 536 // debug only 537 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 538 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 539 private Paint mTouchCrossHairColor; 540 private int mTouchHighlightX; 541 private int mTouchHighlightY; 542 543 /* 544 * Private message ids 545 */ 546 private static final int REMEMBER_PASSWORD = 1; 547 private static final int NEVER_REMEMBER_PASSWORD = 2; 548 private static final int SWITCH_TO_SHORTPRESS = 3; 549 private static final int SWITCH_TO_LONGPRESS = 4; 550 private static final int RELEASE_SINGLE_TAP = 5; 551 private static final int REQUEST_FORM_DATA = 6; 552 private static final int RESUME_WEBCORE_PRIORITY = 7; 553 private static final int DRAG_HELD_MOTIONLESS = 8; 554 private static final int AWAKEN_SCROLL_BARS = 9; 555 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 556 557 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 558 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 559 560 /* 561 * Package message ids 562 */ 563 //! arg1=x, arg2=y 564 static final int SCROLL_TO_MSG_ID = 101; 565 static final int SCROLL_BY_MSG_ID = 102; 566 //! arg1=x, arg2=y 567 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 568 //! arg1=x, arg2=y 569 static final int SYNC_SCROLL_TO_MSG_ID = 104; 570 static final int NEW_PICTURE_MSG_ID = 105; 571 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 572 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 573 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 574 static final int UPDATE_ZOOM_RANGE = 109; 575 static final int UNHANDLED_NAV_KEY = 110; 576 static final int CLEAR_TEXT_ENTRY = 111; 577 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 578 static final int SHOW_RECT_MSG_ID = 113; 579 static final int LONG_PRESS_CENTER = 114; 580 static final int PREVENT_TOUCH_ID = 115; 581 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 582 // obj=Rect in doc coordinates 583 static final int INVAL_RECT_MSG_ID = 117; 584 static final int REQUEST_KEYBOARD = 118; 585 static final int DO_MOTION_UP = 119; 586 static final int SHOW_FULLSCREEN = 120; 587 static final int HIDE_FULLSCREEN = 121; 588 static final int DOM_FOCUS_CHANGED = 122; 589 static final int REPLACE_BASE_CONTENT = 123; 590 // 124; 591 static final int RETURN_LABEL = 125; 592 static final int FIND_AGAIN = 126; 593 static final int CENTER_FIT_RECT = 127; 594 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 595 static final int SET_SCROLLBAR_MODES = 129; 596 static final int SELECTION_STRING_CHANGED = 130; 597 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 598 static final int SAVE_WEBARCHIVE_FINISHED = 132; 599 600 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 601 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 602 603 static final String[] HandlerPrivateDebugString = { 604 "REMEMBER_PASSWORD", // = 1; 605 "NEVER_REMEMBER_PASSWORD", // = 2; 606 "SWITCH_TO_SHORTPRESS", // = 3; 607 "SWITCH_TO_LONGPRESS", // = 4; 608 "RELEASE_SINGLE_TAP", // = 5; 609 "REQUEST_FORM_DATA", // = 6; 610 "RESUME_WEBCORE_PRIORITY", // = 7; 611 "DRAG_HELD_MOTIONLESS", // = 8; 612 "AWAKEN_SCROLL_BARS", // = 9; 613 "PREVENT_DEFAULT_TIMEOUT" // = 10; 614 }; 615 616 static final String[] HandlerPackageDebugString = { 617 "SCROLL_TO_MSG_ID", // = 101; 618 "SCROLL_BY_MSG_ID", // = 102; 619 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 620 "SYNC_SCROLL_TO_MSG_ID", // = 104; 621 "NEW_PICTURE_MSG_ID", // = 105; 622 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 623 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 624 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 625 "UPDATE_ZOOM_RANGE", // = 109; 626 "UNHANDLED_NAV_KEY", // = 110; 627 "CLEAR_TEXT_ENTRY", // = 111; 628 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 629 "SHOW_RECT_MSG_ID", // = 113; 630 "LONG_PRESS_CENTER", // = 114; 631 "PREVENT_TOUCH_ID", // = 115; 632 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 633 "INVAL_RECT_MSG_ID", // = 117; 634 "REQUEST_KEYBOARD", // = 118; 635 "DO_MOTION_UP", // = 119; 636 "SHOW_FULLSCREEN", // = 120; 637 "HIDE_FULLSCREEN", // = 121; 638 "DOM_FOCUS_CHANGED", // = 122; 639 "REPLACE_BASE_CONTENT", // = 123; 640 "124", // = 124; 641 "RETURN_LABEL", // = 125; 642 "FIND_AGAIN", // = 126; 643 "CENTER_FIT_RECT", // = 127; 644 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 645 "SET_SCROLLBAR_MODES", // = 129; 646 "SELECTION_STRING_CHANGED", // = 130; 647 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 648 "SAVE_WEBARCHIVE_FINISHED" // = 132; 649 }; 650 651 // If the site doesn't use the viewport meta tag to specify the viewport, 652 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 653 static final int DEFAULT_VIEWPORT_WIDTH = 800; 654 655 // normally we try to fit the content to the minimum preferred width 656 // calculated by the Webkit. To avoid the bad behavior when some site's 657 // minimum preferred width keeps growing when changing the viewport width or 658 // the minimum preferred width is huge, an upper limit is needed. 659 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 660 661 // initial scale in percent. 0 means using default. 662 private int mInitialScaleInPercent = 0; 663 664 private boolean mUserScroll = false; 665 666 private int mSnapScrollMode = SNAP_NONE; 667 private static final int SNAP_NONE = 0; 668 private static final int SNAP_LOCK = 1; // not a separate state 669 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 670 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 671 private boolean mSnapPositive; 672 673 // keep these in sync with their counterparts in WebView.cpp 674 private static final int DRAW_EXTRAS_NONE = 0; 675 private static final int DRAW_EXTRAS_FIND = 1; 676 private static final int DRAW_EXTRAS_SELECTION = 2; 677 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 678 679 // keep this in sync with WebCore:ScrollbarMode in WebKit 680 private static final int SCROLLBAR_AUTO = 0; 681 private static final int SCROLLBAR_ALWAYSOFF = 1; 682 // as we auto fade scrollbar, this is ignored. 683 private static final int SCROLLBAR_ALWAYSON = 2; 684 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 685 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 686 687 // the alias via which accessibility JavaScript interface is exposed 688 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 689 690 // JavaScript to inject the script chooser which will 691 // pick the right script for the current URL 692 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 693 "javascript:(function() {" + 694 " var chooser = document.createElement('script');" + 695 " chooser.type = 'text/javascript';" + 696 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 697 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 698 " })();"; 699 700 // Used to match key downs and key ups 701 private boolean mGotKeyDown; 702 703 /* package */ static boolean mLogEvent = true; 704 705 // for event log 706 private long mLastTouchUpTime = 0; 707 708 /** 709 * URI scheme for telephone number 710 */ 711 public static final String SCHEME_TEL = "tel:"; 712 /** 713 * URI scheme for email address 714 */ 715 public static final String SCHEME_MAILTO = "mailto:"; 716 /** 717 * URI scheme for map address 718 */ 719 public static final String SCHEME_GEO = "geo:0,0?q="; 720 721 private int mBackgroundColor = Color.WHITE; 722 723 // Used to notify listeners of a new picture. 724 private PictureListener mPictureListener; 725 /** 726 * Interface to listen for new pictures as they change. 727 */ 728 public interface PictureListener { 729 /** 730 * Notify the listener that the picture has changed. 731 * @param view The WebView that owns the picture. 732 * @param picture The new picture. 733 */ 734 public void onNewPicture(WebView view, Picture picture); 735 } 736 737 // FIXME: Want to make this public, but need to change the API file. 738 public /*static*/ class HitTestResult { 739 /** 740 * Default HitTestResult, where the target is unknown 741 */ 742 public static final int UNKNOWN_TYPE = 0; 743 /** 744 * HitTestResult for hitting a HTML::a tag 745 */ 746 public static final int ANCHOR_TYPE = 1; 747 /** 748 * HitTestResult for hitting a phone number 749 */ 750 public static final int PHONE_TYPE = 2; 751 /** 752 * HitTestResult for hitting a map address 753 */ 754 public static final int GEO_TYPE = 3; 755 /** 756 * HitTestResult for hitting an email address 757 */ 758 public static final int EMAIL_TYPE = 4; 759 /** 760 * HitTestResult for hitting an HTML::img tag 761 */ 762 public static final int IMAGE_TYPE = 5; 763 /** 764 * HitTestResult for hitting a HTML::a tag which contains HTML::img 765 */ 766 public static final int IMAGE_ANCHOR_TYPE = 6; 767 /** 768 * HitTestResult for hitting a HTML::a tag with src=http 769 */ 770 public static final int SRC_ANCHOR_TYPE = 7; 771 /** 772 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 773 */ 774 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 775 /** 776 * HitTestResult for hitting an edit text area 777 */ 778 public static final int EDIT_TEXT_TYPE = 9; 779 780 private int mType; 781 private String mExtra; 782 783 HitTestResult() { 784 mType = UNKNOWN_TYPE; 785 } 786 787 private void setType(int type) { 788 mType = type; 789 } 790 791 private void setExtra(String extra) { 792 mExtra = extra; 793 } 794 795 public int getType() { 796 return mType; 797 } 798 799 public String getExtra() { 800 return mExtra; 801 } 802 } 803 804 /** 805 * Construct a new WebView with a Context object. 806 * @param context A Context object used to access application assets. 807 */ 808 public WebView(Context context) { 809 this(context, null); 810 } 811 812 /** 813 * Construct a new WebView with layout parameters. 814 * @param context A Context object used to access application assets. 815 * @param attrs An AttributeSet passed to our parent. 816 */ 817 public WebView(Context context, AttributeSet attrs) { 818 this(context, attrs, com.android.internal.R.attr.webViewStyle); 819 } 820 821 /** 822 * Construct a new WebView with layout parameters and a default style. 823 * @param context A Context object used to access application assets. 824 * @param attrs An AttributeSet passed to our parent. 825 * @param defStyle The default style resource ID. 826 */ 827 public WebView(Context context, AttributeSet attrs, int defStyle) { 828 this(context, attrs, defStyle, null); 829 } 830 831 /** 832 * Construct a new WebView with layout parameters, a default style and a set 833 * of custom Javscript interfaces to be added to the WebView at initialization 834 * time. This guarantees that these interfaces will be available when the JS 835 * context is initialized. 836 * @param context A Context object used to access application assets. 837 * @param attrs An AttributeSet passed to our parent. 838 * @param defStyle The default style resource ID. 839 * @param javascriptInterfaces is a Map of interface names, as keys, and 840 * object implementing those interfaces, as values. 841 * @hide pending API council approval. 842 */ 843 protected WebView(Context context, AttributeSet attrs, int defStyle, 844 Map<String, Object> javascriptInterfaces) { 845 super(context, attrs, defStyle); 846 847 if (AccessibilityManager.getInstance(context).isEnabled()) { 848 if (javascriptInterfaces == null) { 849 javascriptInterfaces = new HashMap<String, Object>(); 850 } 851 exposeAccessibilityJavaScriptApi(javascriptInterfaces); 852 } 853 854 mCallbackProxy = new CallbackProxy(context, this); 855 mViewManager = new ViewManager(this); 856 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 857 mDatabase = WebViewDatabase.getInstance(context); 858 mScroller = new Scroller(context); 859 mZoomManager = new ZoomManager(this, mCallbackProxy); 860 861 /* The init method must follow the creation of certain member variables, 862 * such as the mZoomManager. 863 */ 864 init(); 865 updateMultiTouchSupport(context); 866 } 867 868 void updateMultiTouchSupport(Context context) { 869 mZoomManager.updateMultiTouchSupport(context); 870 } 871 872 private void init() { 873 setWillNotDraw(false); 874 setFocusable(true); 875 setFocusableInTouchMode(true); 876 setClickable(true); 877 setLongClickable(true); 878 879 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 880 int slop = configuration.getScaledTouchSlop(); 881 mTouchSlopSquare = slop * slop; 882 mMinLockSnapReverseDistance = slop; 883 slop = configuration.getScaledDoubleTapSlop(); 884 mDoubleTapSlopSquare = slop * slop; 885 final float density = getContext().getResources().getDisplayMetrics().density; 886 // use one line height, 16 based on our current default font, for how 887 // far we allow a touch be away from the edge of a link 888 mNavSlop = (int) (16 * density); 889 mZoomManager.init(density); 890 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 891 892 // Compute the inverse of the density squared. 893 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 894 } 895 896 /** 897 * Exposes accessibility APIs to JavaScript by appending them to the JavaScript 898 * interfaces map provided by the WebView client. In case of conflicting 899 * alias with the one of the accessibility API the user specified one wins. 900 * 901 * @param javascriptInterfaces A map with interfaces to be exposed to JavaScript. 902 */ 903 private void exposeAccessibilityJavaScriptApi(Map<String, Object> javascriptInterfaces) { 904 if (javascriptInterfaces.containsKey(ALIAS_ACCESSIBILITY_JS_INTERFACE)) { 905 Log.w(LOGTAG, "JavaScript interface mapped to \"" + ALIAS_ACCESSIBILITY_JS_INTERFACE 906 + "\" overrides the accessibility API JavaScript interface. No accessibility" 907 + "API will be exposed to JavaScript!"); 908 return; 909 } 910 911 // expose the TTS for now ... 912 javascriptInterfaces.put(ALIAS_ACCESSIBILITY_JS_INTERFACE, 913 new TextToSpeech(getContext(), null)); 914 } 915 916 /* package */void updateDefaultZoomDensity(int zoomDensity) { 917 final float density = mContext.getResources().getDisplayMetrics().density 918 * 100 / zoomDensity; 919 mNavSlop = (int) (16 * density); 920 mZoomManager.updateDefaultZoomDensity(density); 921 } 922 923 /* package */ boolean onSavePassword(String schemePlusHost, String username, 924 String password, final Message resumeMsg) { 925 boolean rVal = false; 926 if (resumeMsg == null) { 927 // null resumeMsg implies saving password silently 928 mDatabase.setUsernamePassword(schemePlusHost, username, password); 929 } else { 930 final Message remember = mPrivateHandler.obtainMessage( 931 REMEMBER_PASSWORD); 932 remember.getData().putString("host", schemePlusHost); 933 remember.getData().putString("username", username); 934 remember.getData().putString("password", password); 935 remember.obj = resumeMsg; 936 937 final Message neverRemember = mPrivateHandler.obtainMessage( 938 NEVER_REMEMBER_PASSWORD); 939 neverRemember.getData().putString("host", schemePlusHost); 940 neverRemember.getData().putString("username", username); 941 neverRemember.getData().putString("password", password); 942 neverRemember.obj = resumeMsg; 943 944 new AlertDialog.Builder(getContext()) 945 .setTitle(com.android.internal.R.string.save_password_label) 946 .setMessage(com.android.internal.R.string.save_password_message) 947 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 948 new DialogInterface.OnClickListener() { 949 public void onClick(DialogInterface dialog, int which) { 950 resumeMsg.sendToTarget(); 951 } 952 }) 953 .setNeutralButton(com.android.internal.R.string.save_password_remember, 954 new DialogInterface.OnClickListener() { 955 public void onClick(DialogInterface dialog, int which) { 956 remember.sendToTarget(); 957 } 958 }) 959 .setNegativeButton(com.android.internal.R.string.save_password_never, 960 new DialogInterface.OnClickListener() { 961 public void onClick(DialogInterface dialog, int which) { 962 neverRemember.sendToTarget(); 963 } 964 }) 965 .setOnCancelListener(new OnCancelListener() { 966 public void onCancel(DialogInterface dialog) { 967 resumeMsg.sendToTarget(); 968 } 969 }).show(); 970 // Return true so that WebViewCore will pause while the dialog is 971 // up. 972 rVal = true; 973 } 974 return rVal; 975 } 976 977 @Override 978 public void setScrollBarStyle(int style) { 979 if (style == View.SCROLLBARS_INSIDE_INSET 980 || style == View.SCROLLBARS_OUTSIDE_INSET) { 981 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 982 } else { 983 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 984 } 985 super.setScrollBarStyle(style); 986 } 987 988 /** 989 * Specify whether the horizontal scrollbar has overlay style. 990 * @param overlay TRUE if horizontal scrollbar should have overlay style. 991 */ 992 public void setHorizontalScrollbarOverlay(boolean overlay) { 993 mOverlayHorizontalScrollbar = overlay; 994 } 995 996 /** 997 * Specify whether the vertical scrollbar has overlay style. 998 * @param overlay TRUE if vertical scrollbar should have overlay style. 999 */ 1000 public void setVerticalScrollbarOverlay(boolean overlay) { 1001 mOverlayVerticalScrollbar = overlay; 1002 } 1003 1004 /** 1005 * Return whether horizontal scrollbar has overlay style 1006 * @return TRUE if horizontal scrollbar has overlay style. 1007 */ 1008 public boolean overlayHorizontalScrollbar() { 1009 return mOverlayHorizontalScrollbar; 1010 } 1011 1012 /** 1013 * Return whether vertical scrollbar has overlay style 1014 * @return TRUE if vertical scrollbar has overlay style. 1015 */ 1016 public boolean overlayVerticalScrollbar() { 1017 return mOverlayVerticalScrollbar; 1018 } 1019 1020 /* 1021 * Return the width of the view where the content of WebView should render 1022 * to. 1023 * Note: this can be called from WebCoreThread. 1024 */ 1025 /* package */ int getViewWidth() { 1026 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1027 return getWidth(); 1028 } else { 1029 return getWidth() - getVerticalScrollbarWidth(); 1030 } 1031 } 1032 1033 /* 1034 * returns the height of the titlebarview (if any). Does not care about 1035 * scrolling 1036 */ 1037 int getTitleHeight() { 1038 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1039 } 1040 1041 /* 1042 * Return the amount of the titlebarview (if any) that is visible 1043 */ 1044 int getVisibleTitleHeight() { 1045 return Math.max(getTitleHeight() - mScrollY, 0); 1046 } 1047 1048 /* 1049 * Return the height of the view where the content of WebView should render 1050 * to. Note that this excludes mTitleBar, if there is one. 1051 * Note: this can be called from WebCoreThread. 1052 */ 1053 /* package */ int getViewHeight() { 1054 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1055 } 1056 1057 private int getViewHeightWithTitle() { 1058 int height = getHeight(); 1059 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1060 height -= getHorizontalScrollbarHeight(); 1061 } 1062 return height; 1063 } 1064 1065 /** 1066 * @return The SSL certificate for the main top-level page or null if 1067 * there is no certificate (the site is not secure). 1068 */ 1069 public SslCertificate getCertificate() { 1070 return mCertificate; 1071 } 1072 1073 /** 1074 * Sets the SSL certificate for the main top-level page. 1075 */ 1076 public void setCertificate(SslCertificate certificate) { 1077 if (DebugFlags.WEB_VIEW) { 1078 Log.v(LOGTAG, "setCertificate=" + certificate); 1079 } 1080 // here, the certificate can be null (if the site is not secure) 1081 mCertificate = certificate; 1082 } 1083 1084 //------------------------------------------------------------------------- 1085 // Methods called by activity 1086 //------------------------------------------------------------------------- 1087 1088 /** 1089 * Save the username and password for a particular host in the WebView's 1090 * internal database. 1091 * @param host The host that required the credentials. 1092 * @param username The username for the given host. 1093 * @param password The password for the given host. 1094 */ 1095 public void savePassword(String host, String username, String password) { 1096 mDatabase.setUsernamePassword(host, username, password); 1097 } 1098 1099 /** 1100 * Set the HTTP authentication credentials for a given host and realm. 1101 * 1102 * @param host The host for the credentials. 1103 * @param realm The realm for the credentials. 1104 * @param username The username for the password. If it is null, it means 1105 * password can't be saved. 1106 * @param password The password 1107 */ 1108 public void setHttpAuthUsernamePassword(String host, String realm, 1109 String username, String password) { 1110 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1111 } 1112 1113 /** 1114 * Retrieve the HTTP authentication username and password for a given 1115 * host & realm pair 1116 * 1117 * @param host The host for which the credentials apply. 1118 * @param realm The realm for which the credentials apply. 1119 * @return String[] if found, String[0] is username, which can be null and 1120 * String[1] is password. Return null if it can't find anything. 1121 */ 1122 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1123 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1124 } 1125 1126 /** 1127 * Destroy the internal state of the WebView. This method should be called 1128 * after the WebView has been removed from the view system. No other 1129 * methods may be called on a WebView after destroy. 1130 */ 1131 public void destroy() { 1132 clearTextEntry(false); 1133 if (mWebViewCore != null) { 1134 // Set the handlers to null before destroying WebViewCore so no 1135 // more messages will be posted. 1136 mCallbackProxy.setWebViewClient(null); 1137 mCallbackProxy.setWebChromeClient(null); 1138 // Tell WebViewCore to destroy itself 1139 synchronized (this) { 1140 WebViewCore webViewCore = mWebViewCore; 1141 mWebViewCore = null; // prevent using partial webViewCore 1142 webViewCore.destroy(); 1143 } 1144 // Remove any pending messages that might not be serviced yet. 1145 mPrivateHandler.removeCallbacksAndMessages(null); 1146 mCallbackProxy.removeCallbacksAndMessages(null); 1147 // Wake up the WebCore thread just in case it is waiting for a 1148 // javascript dialog. 1149 synchronized (mCallbackProxy) { 1150 mCallbackProxy.notify(); 1151 } 1152 } 1153 if (mNativeClass != 0) { 1154 nativeDestroy(); 1155 mNativeClass = 0; 1156 } 1157 } 1158 1159 /** 1160 * Enables platform notifications of data state and proxy changes. 1161 */ 1162 public static void enablePlatformNotifications() { 1163 Network.enablePlatformNotifications(); 1164 } 1165 1166 /** 1167 * If platform notifications are enabled, this should be called 1168 * from the Activity's onPause() or onStop(). 1169 */ 1170 public static void disablePlatformNotifications() { 1171 Network.disablePlatformNotifications(); 1172 } 1173 1174 /** 1175 * Sets JavaScript engine flags. 1176 * 1177 * @param flags JS engine flags in a String 1178 * 1179 * @hide pending API solidification 1180 */ 1181 public void setJsFlags(String flags) { 1182 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1183 } 1184 1185 /** 1186 * Inform WebView of the network state. This is used to set 1187 * the javascript property window.navigator.isOnline and 1188 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1189 * @param networkUp boolean indicating if network is available 1190 */ 1191 public void setNetworkAvailable(boolean networkUp) { 1192 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1193 networkUp ? 1 : 0, 0); 1194 } 1195 1196 /** 1197 * Inform WebView about the current network type. 1198 * {@hide} 1199 */ 1200 public void setNetworkType(String type, String subtype) { 1201 Map<String, String> map = new HashMap<String, String>(); 1202 map.put("type", type); 1203 map.put("subtype", subtype); 1204 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1205 } 1206 /** 1207 * Save the state of this WebView used in 1208 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1209 * method no longer stores the display data for this WebView. The previous 1210 * behavior could potentially leak files if {@link #restoreState} was never 1211 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1212 * and restoring the display data. 1213 * @param outState The Bundle to store the WebView state. 1214 * @return The same copy of the back/forward list used to save the state. If 1215 * saveState fails, the returned list will be null. 1216 * @see #savePicture 1217 * @see #restorePicture 1218 */ 1219 public WebBackForwardList saveState(Bundle outState) { 1220 if (outState == null) { 1221 return null; 1222 } 1223 // We grab a copy of the back/forward list because a client of WebView 1224 // may have invalidated the history list by calling clearHistory. 1225 WebBackForwardList list = copyBackForwardList(); 1226 final int currentIndex = list.getCurrentIndex(); 1227 final int size = list.getSize(); 1228 // We should fail saving the state if the list is empty or the index is 1229 // not in a valid range. 1230 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1231 return null; 1232 } 1233 outState.putInt("index", currentIndex); 1234 // FIXME: This should just be a byte[][] instead of ArrayList but 1235 // Parcel.java does not have the code to handle multi-dimensional 1236 // arrays. 1237 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1238 for (int i = 0; i < size; i++) { 1239 WebHistoryItem item = list.getItemAtIndex(i); 1240 if (null == item) { 1241 // FIXME: this shouldn't happen 1242 // need to determine how item got set to null 1243 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1244 return null; 1245 } 1246 byte[] data = item.getFlattenedData(); 1247 if (data == null) { 1248 // It would be very odd to not have any data for a given history 1249 // item. And we will fail to rebuild the history list without 1250 // flattened data. 1251 return null; 1252 } 1253 history.add(data); 1254 } 1255 outState.putSerializable("history", history); 1256 if (mCertificate != null) { 1257 outState.putBundle("certificate", 1258 SslCertificate.saveState(mCertificate)); 1259 } 1260 return list; 1261 } 1262 1263 /** 1264 * Save the current display data to the Bundle given. Used in conjunction 1265 * with {@link #saveState}. 1266 * @param b A Bundle to store the display data. 1267 * @param dest The file to store the serialized picture data. Will be 1268 * overwritten with this WebView's picture data. 1269 * @return True if the picture was successfully saved. 1270 */ 1271 public boolean savePicture(Bundle b, final File dest) { 1272 if (dest == null || b == null) { 1273 return false; 1274 } 1275 final Picture p = capturePicture(); 1276 // Use a temporary file while writing to ensure the destination file 1277 // contains valid data. 1278 final File temp = new File(dest.getPath() + ".writing"); 1279 new Thread(new Runnable() { 1280 public void run() { 1281 FileOutputStream out = null; 1282 try { 1283 out = new FileOutputStream(temp); 1284 p.writeToStream(out); 1285 // Writing the picture succeeded, rename the temporary file 1286 // to the destination. 1287 temp.renameTo(dest); 1288 } catch (Exception e) { 1289 // too late to do anything about it. 1290 } finally { 1291 if (out != null) { 1292 try { 1293 out.close(); 1294 } catch (Exception e) { 1295 // Can't do anything about that 1296 } 1297 } 1298 temp.delete(); 1299 } 1300 } 1301 }).start(); 1302 // now update the bundle 1303 b.putInt("scrollX", mScrollX); 1304 b.putInt("scrollY", mScrollY); 1305 mZoomManager.saveZoomState(b); 1306 return true; 1307 } 1308 1309 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1310 int sx = b.getInt("scrollX", 0); 1311 int sy = b.getInt("scrollY", 0); 1312 1313 mDrawHistory = true; 1314 mHistoryPicture = p; 1315 mScrollX = sx; 1316 mScrollY = sy; 1317 mZoomManager.restoreZoomState(b); 1318 final float scale = mZoomManager.getScale(); 1319 mHistoryWidth = Math.round(p.getWidth() * scale); 1320 mHistoryHeight = Math.round(p.getHeight() * scale); 1321 1322 invalidate(); 1323 } 1324 1325 /** 1326 * Restore the display data that was save in {@link #savePicture}. Used in 1327 * conjunction with {@link #restoreState}. 1328 * @param b A Bundle containing the saved display data. 1329 * @param src The file where the picture data was stored. 1330 * @return True if the picture was successfully restored. 1331 */ 1332 public boolean restorePicture(Bundle b, File src) { 1333 if (src == null || b == null) { 1334 return false; 1335 } 1336 if (!src.exists()) { 1337 return false; 1338 } 1339 try { 1340 final FileInputStream in = new FileInputStream(src); 1341 final Bundle copy = new Bundle(b); 1342 new Thread(new Runnable() { 1343 public void run() { 1344 try { 1345 final Picture p = Picture.createFromStream(in); 1346 if (p != null) { 1347 // Post a runnable on the main thread to update the 1348 // history picture fields. 1349 mPrivateHandler.post(new Runnable() { 1350 public void run() { 1351 restoreHistoryPictureFields(p, copy); 1352 } 1353 }); 1354 } 1355 } finally { 1356 try { 1357 in.close(); 1358 } catch (Exception e) { 1359 // Nothing we can do now. 1360 } 1361 } 1362 } 1363 }).start(); 1364 } catch (FileNotFoundException e){ 1365 e.printStackTrace(); 1366 } 1367 return true; 1368 } 1369 1370 /** 1371 * Restore the state of this WebView from the given map used in 1372 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1373 * be called to restore the state of the WebView before using the object. If 1374 * it is called after the WebView has had a chance to build state (load 1375 * pages, create a back/forward list, etc.) there may be undesirable 1376 * side-effects. Please note that this method no longer restores the 1377 * display data for this WebView. See {@link #savePicture} and {@link 1378 * #restorePicture} for saving and restoring the display data. 1379 * @param inState The incoming Bundle of state. 1380 * @return The restored back/forward list or null if restoreState failed. 1381 * @see #savePicture 1382 * @see #restorePicture 1383 */ 1384 public WebBackForwardList restoreState(Bundle inState) { 1385 WebBackForwardList returnList = null; 1386 if (inState == null) { 1387 return returnList; 1388 } 1389 if (inState.containsKey("index") && inState.containsKey("history")) { 1390 mCertificate = SslCertificate.restoreState( 1391 inState.getBundle("certificate")); 1392 1393 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1394 final int index = inState.getInt("index"); 1395 // We can't use a clone of the list because we need to modify the 1396 // shared copy, so synchronize instead to prevent concurrent 1397 // modifications. 1398 synchronized (list) { 1399 final List<byte[]> history = 1400 (List<byte[]>) inState.getSerializable("history"); 1401 final int size = history.size(); 1402 // Check the index bounds so we don't crash in native code while 1403 // restoring the history index. 1404 if (index < 0 || index >= size) { 1405 return null; 1406 } 1407 for (int i = 0; i < size; i++) { 1408 byte[] data = history.remove(0); 1409 if (data == null) { 1410 // If we somehow have null data, we cannot reconstruct 1411 // the item and thus our history list cannot be rebuilt. 1412 return null; 1413 } 1414 WebHistoryItem item = new WebHistoryItem(data); 1415 list.addHistoryItem(item); 1416 } 1417 // Grab the most recent copy to return to the caller. 1418 returnList = copyBackForwardList(); 1419 // Update the copy to have the correct index. 1420 returnList.setCurrentIndex(index); 1421 } 1422 // Remove all pending messages because we are restoring previous 1423 // state. 1424 mWebViewCore.removeMessages(); 1425 // Send a restore state message. 1426 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1427 } 1428 return returnList; 1429 } 1430 1431 /** 1432 * Load the given url with the extra headers. 1433 * @param url The url of the resource to load. 1434 * @param extraHeaders The extra headers sent with this url. This should not 1435 * include the common headers like "user-agent". If it does, it 1436 * will be replaced by the intrinsic value of the WebView. 1437 */ 1438 public void loadUrl(String url, Map<String, String> extraHeaders) { 1439 switchOutDrawHistory(); 1440 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1441 arg.mUrl = url; 1442 arg.mExtraHeaders = extraHeaders; 1443 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1444 clearTextEntry(false); 1445 } 1446 1447 /** 1448 * Load the given url. 1449 * @param url The url of the resource to load. 1450 */ 1451 public void loadUrl(String url) { 1452 if (url == null) { 1453 return; 1454 } 1455 loadUrl(url, null); 1456 } 1457 1458 /** 1459 * Load the url with postData using "POST" method into the WebView. If url 1460 * is not a network url, it will be loaded with {link 1461 * {@link #loadUrl(String)} instead. 1462 * 1463 * @param url The url of the resource to load. 1464 * @param postData The data will be passed to "POST" request. 1465 */ 1466 public void postUrl(String url, byte[] postData) { 1467 if (URLUtil.isNetworkUrl(url)) { 1468 switchOutDrawHistory(); 1469 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1470 arg.mUrl = url; 1471 arg.mPostData = postData; 1472 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1473 clearTextEntry(false); 1474 } else { 1475 loadUrl(url); 1476 } 1477 } 1478 1479 /** 1480 * Load the given data into the WebView. This will load the data into 1481 * WebView using the data: scheme. Content loaded through this mechanism 1482 * does not have the ability to load content from the network. 1483 * @param data A String of data in the given encoding. The date must 1484 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1485 * %27, %3f respectively. 1486 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1487 * @param encoding The encoding of the data. i.e. utf-8, base64 1488 */ 1489 public void loadData(String data, String mimeType, String encoding) { 1490 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1491 } 1492 1493 /** 1494 * Load the given data into the WebView, use the provided URL as the base 1495 * URL for the content. The base URL is the URL that represents the page 1496 * that is loaded through this interface. As such, it is used to resolve any 1497 * relative URLs. The historyUrl is used for the history entry. 1498 * <p> 1499 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1500 * files through "file:///android_asset/" for the sub resources is more 1501 * restricted. If you provide null or empty string as baseUrl, you won't be 1502 * able to access asset files. If the baseUrl is anything other than 1503 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1504 * sub resources. 1505 * 1506 * @param baseUrl Url to resolve relative paths with, if null defaults to 1507 * "about:blank" 1508 * @param data A String of data in the given encoding. 1509 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1510 * defaults to "text/html" 1511 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1512 * @param historyUrl URL to use as the history entry. Can be null. 1513 */ 1514 public void loadDataWithBaseURL(String baseUrl, String data, 1515 String mimeType, String encoding, String historyUrl) { 1516 1517 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1518 loadData(data, mimeType, encoding); 1519 return; 1520 } 1521 switchOutDrawHistory(); 1522 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1523 arg.mBaseUrl = baseUrl; 1524 arg.mData = data; 1525 arg.mMimeType = mimeType; 1526 arg.mEncoding = encoding; 1527 arg.mHistoryUrl = historyUrl; 1528 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1529 clearTextEntry(false); 1530 } 1531 1532 /** 1533 * Saves the current view as a web archive. 1534 * 1535 * @param filename The filename where the archive should be placed. 1536 */ 1537 public void saveWebArchive(String filename) { 1538 saveWebArchive(filename, false, null); 1539 } 1540 1541 /* package */ static class SaveWebArchiveMessage { 1542 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1543 mBasename = basename; 1544 mAutoname = autoname; 1545 mCallback = callback; 1546 } 1547 1548 /* package */ final String mBasename; 1549 /* package */ final boolean mAutoname; 1550 /* package */ final ValueCallback<String> mCallback; 1551 /* package */ String mResultFile; 1552 } 1553 1554 /** 1555 * Saves the current view as a web archive. 1556 * 1557 * @param basename The filename where the archive should be placed. 1558 * @param autoname If false, takes basename to be a file. If true, basename 1559 * is assumed to be a directory in which a filename will be 1560 * chosen according to the url of the current page. 1561 * @param callback Called after the web archive has been saved. The 1562 * parameter for onReceiveValue will either be the filename 1563 * under which the file was saved, or null if saving the 1564 * file failed. 1565 */ 1566 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1567 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1568 new SaveWebArchiveMessage(basename, autoname, callback)); 1569 } 1570 1571 /** 1572 * Stop the current load. 1573 */ 1574 public void stopLoading() { 1575 // TODO: should we clear all the messages in the queue before sending 1576 // STOP_LOADING? 1577 switchOutDrawHistory(); 1578 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1579 } 1580 1581 /** 1582 * Reload the current url. 1583 */ 1584 public void reload() { 1585 clearTextEntry(false); 1586 switchOutDrawHistory(); 1587 mWebViewCore.sendMessage(EventHub.RELOAD); 1588 } 1589 1590 /** 1591 * Return true if this WebView has a back history item. 1592 * @return True iff this WebView has a back history item. 1593 */ 1594 public boolean canGoBack() { 1595 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1596 synchronized (l) { 1597 if (l.getClearPending()) { 1598 return false; 1599 } else { 1600 return l.getCurrentIndex() > 0; 1601 } 1602 } 1603 } 1604 1605 /** 1606 * Go back in the history of this WebView. 1607 */ 1608 public void goBack() { 1609 goBackOrForward(-1); 1610 } 1611 1612 /** 1613 * Return true if this WebView has a forward history item. 1614 * @return True iff this Webview has a forward history item. 1615 */ 1616 public boolean canGoForward() { 1617 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1618 synchronized (l) { 1619 if (l.getClearPending()) { 1620 return false; 1621 } else { 1622 return l.getCurrentIndex() < l.getSize() - 1; 1623 } 1624 } 1625 } 1626 1627 /** 1628 * Go forward in the history of this WebView. 1629 */ 1630 public void goForward() { 1631 goBackOrForward(1); 1632 } 1633 1634 /** 1635 * Return true if the page can go back or forward the given 1636 * number of steps. 1637 * @param steps The negative or positive number of steps to move the 1638 * history. 1639 */ 1640 public boolean canGoBackOrForward(int steps) { 1641 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1642 synchronized (l) { 1643 if (l.getClearPending()) { 1644 return false; 1645 } else { 1646 int newIndex = l.getCurrentIndex() + steps; 1647 return newIndex >= 0 && newIndex < l.getSize(); 1648 } 1649 } 1650 } 1651 1652 /** 1653 * Go to the history item that is the number of steps away from 1654 * the current item. Steps is negative if backward and positive 1655 * if forward. 1656 * @param steps The number of steps to take back or forward in the back 1657 * forward list. 1658 */ 1659 public void goBackOrForward(int steps) { 1660 goBackOrForward(steps, false); 1661 } 1662 1663 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1664 if (steps != 0) { 1665 clearTextEntry(false); 1666 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1667 ignoreSnapshot ? 1 : 0); 1668 } 1669 } 1670 1671 private boolean extendScroll(int y) { 1672 int finalY = mScroller.getFinalY(); 1673 int newY = pinLocY(finalY + y); 1674 if (newY == finalY) return false; 1675 mScroller.setFinalY(newY); 1676 mScroller.extendDuration(computeDuration(0, y)); 1677 return true; 1678 } 1679 1680 /** 1681 * Scroll the contents of the view up by half the view size 1682 * @param top true to jump to the top of the page 1683 * @return true if the page was scrolled 1684 */ 1685 public boolean pageUp(boolean top) { 1686 if (mNativeClass == 0) { 1687 return false; 1688 } 1689 nativeClearCursor(); // start next trackball movement from page edge 1690 if (top) { 1691 // go to the top of the document 1692 return pinScrollTo(mScrollX, 0, true, 0); 1693 } 1694 // Page up 1695 int h = getHeight(); 1696 int y; 1697 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1698 y = -h + PAGE_SCROLL_OVERLAP; 1699 } else { 1700 y = -h / 2; 1701 } 1702 mUserScroll = true; 1703 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1704 : extendScroll(y); 1705 } 1706 1707 /** 1708 * Scroll the contents of the view down by half the page size 1709 * @param bottom true to jump to bottom of page 1710 * @return true if the page was scrolled 1711 */ 1712 public boolean pageDown(boolean bottom) { 1713 if (mNativeClass == 0) { 1714 return false; 1715 } 1716 nativeClearCursor(); // start next trackball movement from page edge 1717 if (bottom) { 1718 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1719 } 1720 // Page down. 1721 int h = getHeight(); 1722 int y; 1723 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1724 y = h - PAGE_SCROLL_OVERLAP; 1725 } else { 1726 y = h / 2; 1727 } 1728 mUserScroll = true; 1729 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1730 : extendScroll(y); 1731 } 1732 1733 /** 1734 * Clear the view so that onDraw() will draw nothing but white background, 1735 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1736 */ 1737 public void clearView() { 1738 mContentWidth = 0; 1739 mContentHeight = 0; 1740 nativeSetBaseLayer(0); 1741 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1742 } 1743 1744 /** 1745 * Return a new picture that captures the current display of the webview. 1746 * This is a copy of the display, and will be unaffected if the webview 1747 * later loads a different URL. 1748 * 1749 * @return a picture containing the current contents of the view. Note this 1750 * picture is of the entire document, and is not restricted to the 1751 * bounds of the view. 1752 */ 1753 public Picture capturePicture() { 1754 Picture result = new Picture(); 1755 nativeCopyBaseContentToPicture(result); 1756 return result; 1757 } 1758 1759 /** 1760 * Return true if the browser is displaying a TextView for text input. 1761 */ 1762 private boolean inEditingMode() { 1763 return mWebTextView != null && mWebTextView.getParent() != null; 1764 } 1765 1766 /** 1767 * Remove the WebTextView. 1768 * @param disableFocusController If true, send a message to webkit 1769 * disabling the focus controller, so the caret stops blinking. 1770 */ 1771 private void clearTextEntry(boolean disableFocusController) { 1772 if (inEditingMode()) { 1773 mWebTextView.remove(); 1774 if (disableFocusController) { 1775 setFocusControllerInactive(); 1776 } 1777 } 1778 } 1779 1780 /** 1781 * Return the current scale of the WebView 1782 * @return The current scale. 1783 */ 1784 public float getScale() { 1785 return mZoomManager.getScale(); 1786 } 1787 1788 /** 1789 * Set the initial scale for the WebView. 0 means default. If 1790 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1791 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1792 * WebView starts will this value as initial scale. 1793 * 1794 * @param scaleInPercent The initial scale in percent. 1795 */ 1796 public void setInitialScale(int scaleInPercent) { 1797 mZoomManager.setInitialScaleInPercent(scaleInPercent); 1798 } 1799 1800 /** 1801 * Invoke the graphical zoom picker widget for this WebView. This will 1802 * result in the zoom widget appearing on the screen to control the zoom 1803 * level of this WebView. 1804 */ 1805 public void invokeZoomPicker() { 1806 if (!getSettings().supportZoom()) { 1807 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1808 return; 1809 } 1810 clearTextEntry(false); 1811 mZoomManager.invokeZoomPicker(); 1812 } 1813 1814 /** 1815 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1816 * is found and the anchor has a non-javascript url, the HitTestResult type 1817 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1818 * anchor does not have a url or if it is a javascript url, the type will 1819 * be UNKNOWN_TYPE and the url has to be retrieved through 1820 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1821 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1822 * the "extra" field. A type of 1823 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1824 * a child node. If a phone number is found, the HitTestResult type is set 1825 * to PHONE_TYPE and the phone number is set in the "extra" field of 1826 * HitTestResult. If a map address is found, the HitTestResult type is set 1827 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1828 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1829 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1830 * HitTestResult type is set to UNKNOWN_TYPE. 1831 */ 1832 public HitTestResult getHitTestResult() { 1833 if (mNativeClass == 0) { 1834 return null; 1835 } 1836 1837 HitTestResult result = new HitTestResult(); 1838 if (nativeHasCursorNode()) { 1839 if (nativeCursorIsTextInput()) { 1840 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1841 } else { 1842 String text = nativeCursorText(); 1843 if (text != null) { 1844 if (text.startsWith(SCHEME_TEL)) { 1845 result.setType(HitTestResult.PHONE_TYPE); 1846 result.setExtra(text.substring(SCHEME_TEL.length())); 1847 } else if (text.startsWith(SCHEME_MAILTO)) { 1848 result.setType(HitTestResult.EMAIL_TYPE); 1849 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1850 } else if (text.startsWith(SCHEME_GEO)) { 1851 result.setType(HitTestResult.GEO_TYPE); 1852 result.setExtra(URLDecoder.decode(text 1853 .substring(SCHEME_GEO.length()))); 1854 } else if (nativeCursorIsAnchor()) { 1855 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1856 result.setExtra(text); 1857 } 1858 } 1859 } 1860 } 1861 int type = result.getType(); 1862 if (type == HitTestResult.UNKNOWN_TYPE 1863 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1864 // Now check to see if it is an image. 1865 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1866 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1867 String text = nativeImageURI(contentX, contentY); 1868 if (text != null) { 1869 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1870 HitTestResult.IMAGE_TYPE : 1871 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1872 result.setExtra(text); 1873 } 1874 } 1875 return result; 1876 } 1877 1878 // Called by JNI when the DOM has changed the focus. Clear the focus so 1879 // that new keys will go to the newly focused field 1880 private void domChangedFocus() { 1881 if (inEditingMode()) { 1882 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1883 } 1884 } 1885 /** 1886 * Request the href of an anchor element due to getFocusNodePath returning 1887 * "href." If hrefMsg is null, this method returns immediately and does not 1888 * dispatch hrefMsg to its target. 1889 * 1890 * @param hrefMsg This message will be dispatched with the result of the 1891 * request as the data member with "url" as key. The result can 1892 * be null. 1893 */ 1894 // FIXME: API change required to change the name of this function. We now 1895 // look at the cursor node, and not the focus node. Also, what is 1896 // getFocusNodePath? 1897 public void requestFocusNodeHref(Message hrefMsg) { 1898 if (hrefMsg == null || mNativeClass == 0) { 1899 return; 1900 } 1901 if (nativeCursorIsAnchor()) { 1902 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1903 nativeCursorFramePointer(), nativeCursorNodePointer(), 1904 hrefMsg); 1905 } 1906 } 1907 1908 /** 1909 * Request the url of the image last touched by the user. msg will be sent 1910 * to its target with a String representing the url as its object. 1911 * 1912 * @param msg This message will be dispatched with the result of the request 1913 * as the data member with "url" as key. The result can be null. 1914 */ 1915 public void requestImageRef(Message msg) { 1916 if (0 == mNativeClass) return; // client isn't initialized 1917 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1918 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1919 String ref = nativeImageURI(contentX, contentY); 1920 Bundle data = msg.getData(); 1921 data.putString("url", ref); 1922 msg.setData(data); 1923 msg.sendToTarget(); 1924 } 1925 1926 static int pinLoc(int x, int viewMax, int docMax) { 1927// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1928 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1929 // pin the short document to the top/left of the screen 1930 x = 0; 1931// Log.d(LOGTAG, "--- center " + x); 1932 } else if (x < 0) { 1933 x = 0; 1934// Log.d(LOGTAG, "--- zero"); 1935 } else if (x + viewMax > docMax) { 1936 x = docMax - viewMax; 1937// Log.d(LOGTAG, "--- pin " + x); 1938 } 1939 return x; 1940 } 1941 1942 // Expects x in view coordinates 1943 int pinLocX(int x) { 1944 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1945 } 1946 1947 // Expects y in view coordinates 1948 int pinLocY(int y) { 1949 return pinLoc(y, getViewHeightWithTitle(), 1950 computeVerticalScrollRange() + getTitleHeight()); 1951 } 1952 1953 /** 1954 * A title bar which is embedded in this WebView, and scrolls along with it 1955 * vertically, but not horizontally. 1956 */ 1957 private View mTitleBar; 1958 1959 /** 1960 * Since we draw the title bar ourselves, we removed the shadow from the 1961 * browser's activity. We do want a shadow at the bottom of the title bar, 1962 * or at the top of the screen if the title bar is not visible. This 1963 * drawable serves that purpose. 1964 */ 1965 private Drawable mTitleShadow; 1966 1967 /** 1968 * Add or remove a title bar to be embedded into the WebView, and scroll 1969 * along with it vertically, while remaining in view horizontally. Pass 1970 * null to remove the title bar from the WebView, and return to drawing 1971 * the WebView normally without translating to account for the title bar. 1972 * @hide 1973 */ 1974 public void setEmbeddedTitleBar(View v) { 1975 if (mTitleBar == v) return; 1976 if (mTitleBar != null) { 1977 removeView(mTitleBar); 1978 } 1979 if (null != v) { 1980 addView(v, new AbsoluteLayout.LayoutParams( 1981 ViewGroup.LayoutParams.MATCH_PARENT, 1982 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1983 if (mTitleShadow == null) { 1984 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1985 com.android.internal.R.drawable.title_bar_shadow); 1986 } 1987 } 1988 mTitleBar = v; 1989 } 1990 1991 /** 1992 * Given a distance in view space, convert it to content space. Note: this 1993 * does not reflect translation, just scaling, so this should not be called 1994 * with coordinates, but should be called for dimensions like width or 1995 * height. 1996 */ 1997 private int viewToContentDimension(int d) { 1998 return Math.round(d * mZoomManager.getInvScale()); 1999 } 2000 2001 /** 2002 * Given an x coordinate in view space, convert it to content space. Also 2003 * may be used for absolute heights (such as for the WebTextView's 2004 * textSize, which is unaffected by the height of the title bar). 2005 */ 2006 /*package*/ int viewToContentX(int x) { 2007 return viewToContentDimension(x); 2008 } 2009 2010 /** 2011 * Given a y coordinate in view space, convert it to content space. 2012 * Takes into account the height of the title bar if there is one 2013 * embedded into the WebView. 2014 */ 2015 /*package*/ int viewToContentY(int y) { 2016 return viewToContentDimension(y - getTitleHeight()); 2017 } 2018 2019 /** 2020 * Given a x coordinate in view space, convert it to content space. 2021 * Returns the result as a float. 2022 */ 2023 private float viewToContentXf(int x) { 2024 return x * mZoomManager.getInvScale(); 2025 } 2026 2027 /** 2028 * Given a y coordinate in view space, convert it to content space. 2029 * Takes into account the height of the title bar if there is one 2030 * embedded into the WebView. Returns the result as a float. 2031 */ 2032 private float viewToContentYf(int y) { 2033 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2034 } 2035 2036 /** 2037 * Given a distance in content space, convert it to view space. Note: this 2038 * does not reflect translation, just scaling, so this should not be called 2039 * with coordinates, but should be called for dimensions like width or 2040 * height. 2041 */ 2042 /*package*/ int contentToViewDimension(int d) { 2043 return Math.round(d * mZoomManager.getScale()); 2044 } 2045 2046 /** 2047 * Given an x coordinate in content space, convert it to view 2048 * space. 2049 */ 2050 /*package*/ int contentToViewX(int x) { 2051 return contentToViewDimension(x); 2052 } 2053 2054 /** 2055 * Given a y coordinate in content space, convert it to view 2056 * space. Takes into account the height of the title bar. 2057 */ 2058 /*package*/ int contentToViewY(int y) { 2059 return contentToViewDimension(y) + getTitleHeight(); 2060 } 2061 2062 private Rect contentToViewRect(Rect x) { 2063 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2064 contentToViewX(x.right), contentToViewY(x.bottom)); 2065 } 2066 2067 /* To invalidate a rectangle in content coordinates, we need to transform 2068 the rect into view coordinates, so we can then call invalidate(...). 2069 2070 Normally, we would just call contentToView[XY](...), which eventually 2071 calls Math.round(coordinate * mActualScale). However, for invalidates, 2072 we need to account for the slop that occurs with antialiasing. To 2073 address that, we are a little more liberal in the size of the rect that 2074 we invalidate. 2075 2076 This liberal calculation calls floor() for the top/left, and ceil() for 2077 the bottom/right coordinates. This catches the possible extra pixels of 2078 antialiasing that we might have missed with just round(). 2079 */ 2080 2081 // Called by JNI to invalidate the View, given rectangle coordinates in 2082 // content space 2083 private void viewInvalidate(int l, int t, int r, int b) { 2084 final float scale = mZoomManager.getScale(); 2085 final int dy = getTitleHeight(); 2086 invalidate((int)Math.floor(l * scale), 2087 (int)Math.floor(t * scale) + dy, 2088 (int)Math.ceil(r * scale), 2089 (int)Math.ceil(b * scale) + dy); 2090 } 2091 2092 // Called by JNI to invalidate the View after a delay, given rectangle 2093 // coordinates in content space 2094 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2095 final float scale = mZoomManager.getScale(); 2096 final int dy = getTitleHeight(); 2097 postInvalidateDelayed(delay, 2098 (int)Math.floor(l * scale), 2099 (int)Math.floor(t * scale) + dy, 2100 (int)Math.ceil(r * scale), 2101 (int)Math.ceil(b * scale) + dy); 2102 } 2103 2104 private void invalidateContentRect(Rect r) { 2105 viewInvalidate(r.left, r.top, r.right, r.bottom); 2106 } 2107 2108 // stop the scroll animation, and don't let a subsequent fling add 2109 // to the existing velocity 2110 private void abortAnimation() { 2111 mScroller.abortAnimation(); 2112 mLastVelocity = 0; 2113 } 2114 2115 /* call from webcoreview.draw(), so we're still executing in the UI thread 2116 */ 2117 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2118 2119 // premature data from webkit, ignore 2120 if ((w | h) == 0) { 2121 return; 2122 } 2123 2124 // don't abort a scroll animation if we didn't change anything 2125 if (mContentWidth != w || mContentHeight != h) { 2126 // record new dimensions 2127 mContentWidth = w; 2128 mContentHeight = h; 2129 // If history Picture is drawn, don't update scroll. They will be 2130 // updated when we get out of that mode. 2131 if (!mDrawHistory) { 2132 // repin our scroll, taking into account the new content size 2133 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2134 if (!mScroller.isFinished()) { 2135 // We are in the middle of a scroll. Repin the final scroll 2136 // position. 2137 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2138 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2139 } 2140 } 2141 } 2142 contentSizeChanged(updateLayout); 2143 } 2144 2145 // Used to avoid sending many visible rect messages. 2146 private Rect mLastVisibleRectSent; 2147 private Rect mLastGlobalRect; 2148 2149 Rect sendOurVisibleRect() { 2150 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2151 2152 Rect rect = new Rect(); 2153 calcOurContentVisibleRect(rect); 2154 // Rect.equals() checks for null input. 2155 if (!rect.equals(mLastVisibleRectSent)) { 2156 Point pos = new Point(rect.left, rect.top); 2157 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2158 nativeMoveGeneration(), 0, pos); 2159 mLastVisibleRectSent = rect; 2160 } 2161 Rect globalRect = new Rect(); 2162 if (getGlobalVisibleRect(globalRect) 2163 && !globalRect.equals(mLastGlobalRect)) { 2164 if (DebugFlags.WEB_VIEW) { 2165 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2166 + globalRect.top + ",r=" + globalRect.right + ",b=" 2167 + globalRect.bottom); 2168 } 2169 // TODO: the global offset is only used by windowRect() 2170 // in ChromeClientAndroid ; other clients such as touch 2171 // and mouse events could return view + screen relative points. 2172 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2173 mLastGlobalRect = globalRect; 2174 } 2175 return rect; 2176 } 2177 2178 // Sets r to be the visible rectangle of our webview in view coordinates 2179 private void calcOurVisibleRect(Rect r) { 2180 Point p = new Point(); 2181 getGlobalVisibleRect(r, p); 2182 r.offset(-p.x, -p.y); 2183 } 2184 2185 // Sets r to be our visible rectangle in content coordinates 2186 private void calcOurContentVisibleRect(Rect r) { 2187 calcOurVisibleRect(r); 2188 // pin the rect to the bounds of the content 2189 r.left = Math.max(viewToContentX(r.left), 0); 2190 // viewToContentY will remove the total height of the title bar. Add 2191 // the visible height back in to account for the fact that if the title 2192 // bar is partially visible, the part of the visible rect which is 2193 // displaying our content is displaced by that amount. 2194 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2195 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2196 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2197 } 2198 2199 // Sets r to be our visible rectangle in content coordinates. We use this 2200 // method on the native side to compute the position of the fixed layers. 2201 // Uses floating coordinates (necessary to correctly place elements when 2202 // the scale factor is not 1) 2203 private void calcOurContentVisibleRectF(RectF r) { 2204 Rect ri = new Rect(0,0,0,0); 2205 calcOurVisibleRect(ri); 2206 // pin the rect to the bounds of the content 2207 r.left = Math.max(viewToContentXf(ri.left), 0.0f); 2208 // viewToContentY will remove the total height of the title bar. Add 2209 // the visible height back in to account for the fact that if the title 2210 // bar is partially visible, the part of the visible rect which is 2211 // displaying our content is displaced by that amount. 2212 r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f); 2213 r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth); 2214 r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight); 2215 } 2216 2217 static class ViewSizeData { 2218 int mWidth; 2219 int mHeight; 2220 int mTextWrapWidth; 2221 int mAnchorX; 2222 int mAnchorY; 2223 float mScale; 2224 boolean mIgnoreHeight; 2225 } 2226 2227 /** 2228 * Compute unzoomed width and height, and if they differ from the last 2229 * values we sent, send them to webkit (to be used as new viewport) 2230 * 2231 * @param force ensures that the message is sent to webkit even if the width 2232 * or height has not changed since the last message 2233 * 2234 * @return true if new values were sent 2235 */ 2236 boolean sendViewSizeZoom(boolean force) { 2237 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2238 2239 int viewWidth = getViewWidth(); 2240 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2241 int newHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2242 /* 2243 * Because the native side may have already done a layout before the 2244 * View system was able to measure us, we have to send a height of 0 to 2245 * remove excess whitespace when we grow our width. This will trigger a 2246 * layout and a change in content size. This content size change will 2247 * mean that contentSizeChanged will either call this method directly or 2248 * indirectly from onSizeChanged. 2249 */ 2250 if (newWidth > mLastWidthSent && mWrapContent) { 2251 newHeight = 0; 2252 } 2253 // Avoid sending another message if the dimensions have not changed. 2254 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force) { 2255 ViewSizeData data = new ViewSizeData(); 2256 data.mWidth = newWidth; 2257 data.mHeight = newHeight; 2258 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2259 data.mScale = mZoomManager.getScale(); 2260 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2261 && !mHeightCanMeasure; 2262 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2263 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2264 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2265 mLastWidthSent = newWidth; 2266 mLastHeightSent = newHeight; 2267 mZoomManager.clearDocumentAnchor(); 2268 return true; 2269 } 2270 return false; 2271 } 2272 2273 @Override 2274 protected int computeHorizontalScrollRange() { 2275 if (mDrawHistory) { 2276 return mHistoryWidth; 2277 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2278 && !mZoomManager.canZoomOut()) { 2279 // only honor the scrollbar mode when it is at minimum zoom level 2280 return computeHorizontalScrollExtent(); 2281 } else { 2282 // to avoid rounding error caused unnecessary scrollbar, use floor 2283 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2284 } 2285 } 2286 2287 @Override 2288 protected int computeVerticalScrollRange() { 2289 if (mDrawHistory) { 2290 return mHistoryHeight; 2291 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2292 && !mZoomManager.canZoomOut()) { 2293 // only honor the scrollbar mode when it is at minimum zoom level 2294 return computeVerticalScrollExtent(); 2295 } else { 2296 // to avoid rounding error caused unnecessary scrollbar, use floor 2297 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2298 } 2299 } 2300 2301 @Override 2302 protected int computeVerticalScrollOffset() { 2303 return Math.max(mScrollY - getTitleHeight(), 0); 2304 } 2305 2306 @Override 2307 protected int computeVerticalScrollExtent() { 2308 return getViewHeight(); 2309 } 2310 2311 /** @hide */ 2312 @Override 2313 protected void onDrawVerticalScrollBar(Canvas canvas, 2314 Drawable scrollBar, 2315 int l, int t, int r, int b) { 2316 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2317 scrollBar.draw(canvas); 2318 } 2319 2320 /** 2321 * Get the url for the current page. This is not always the same as the url 2322 * passed to WebViewClient.onPageStarted because although the load for 2323 * that url has begun, the current page may not have changed. 2324 * @return The url for the current page. 2325 */ 2326 public String getUrl() { 2327 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2328 return h != null ? h.getUrl() : null; 2329 } 2330 2331 /** 2332 * Get the original url for the current page. This is not always the same 2333 * as the url passed to WebViewClient.onPageStarted because although the 2334 * load for that url has begun, the current page may not have changed. 2335 * Also, there may have been redirects resulting in a different url to that 2336 * originally requested. 2337 * @return The url that was originally requested for the current page. 2338 */ 2339 public String getOriginalUrl() { 2340 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2341 return h != null ? h.getOriginalUrl() : null; 2342 } 2343 2344 /** 2345 * Get the title for the current page. This is the title of the current page 2346 * until WebViewClient.onReceivedTitle is called. 2347 * @return The title for the current page. 2348 */ 2349 public String getTitle() { 2350 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2351 return h != null ? h.getTitle() : null; 2352 } 2353 2354 /** 2355 * Get the favicon for the current page. This is the favicon of the current 2356 * page until WebViewClient.onReceivedIcon is called. 2357 * @return The favicon for the current page. 2358 */ 2359 public Bitmap getFavicon() { 2360 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2361 return h != null ? h.getFavicon() : null; 2362 } 2363 2364 /** 2365 * Get the touch icon url for the apple-touch-icon <link> element, or 2366 * a URL on this site's server pointing to the standard location of a 2367 * touch icon. 2368 * @hide 2369 */ 2370 public String getTouchIconUrl() { 2371 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2372 return h != null ? h.getTouchIconUrl() : null; 2373 } 2374 2375 /** 2376 * Get the progress for the current page. 2377 * @return The progress for the current page between 0 and 100. 2378 */ 2379 public int getProgress() { 2380 return mCallbackProxy.getProgress(); 2381 } 2382 2383 /** 2384 * @return the height of the HTML content. 2385 */ 2386 public int getContentHeight() { 2387 return mContentHeight; 2388 } 2389 2390 /** 2391 * @return the width of the HTML content. 2392 * @hide 2393 */ 2394 public int getContentWidth() { 2395 return mContentWidth; 2396 } 2397 2398 /** 2399 * Pause all layout, parsing, and javascript timers for all webviews. This 2400 * is a global requests, not restricted to just this webview. This can be 2401 * useful if the application has been paused. 2402 */ 2403 public void pauseTimers() { 2404 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2405 } 2406 2407 /** 2408 * Resume all layout, parsing, and javascript timers for all webviews. 2409 * This will resume dispatching all timers. 2410 */ 2411 public void resumeTimers() { 2412 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2413 } 2414 2415 /** 2416 * Call this to pause any extra processing associated with this view and 2417 * its associated DOM/plugins/javascript/etc. For example, if the view is 2418 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2419 * network traffic. When the view is again "active", call onResume(). 2420 * 2421 * Note that this differs from pauseTimers(), which affects all views/DOMs 2422 * @hide 2423 */ 2424 public void onPause() { 2425 if (!mIsPaused) { 2426 mIsPaused = true; 2427 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2428 } 2429 } 2430 2431 /** 2432 * Call this to balanace a previous call to onPause() 2433 * @hide 2434 */ 2435 public void onResume() { 2436 if (mIsPaused) { 2437 mIsPaused = false; 2438 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2439 } 2440 } 2441 2442 /** 2443 * Returns true if the view is paused, meaning onPause() was called. Calling 2444 * onResume() sets the paused state back to false. 2445 * @hide 2446 */ 2447 public boolean isPaused() { 2448 return mIsPaused; 2449 } 2450 2451 /** 2452 * Call this to inform the view that memory is low so that it can 2453 * free any available memory. 2454 */ 2455 public void freeMemory() { 2456 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2457 } 2458 2459 /** 2460 * Clear the resource cache. Note that the cache is per-application, so 2461 * this will clear the cache for all WebViews used. 2462 * 2463 * @param includeDiskFiles If false, only the RAM cache is cleared. 2464 */ 2465 public void clearCache(boolean includeDiskFiles) { 2466 // Note: this really needs to be a static method as it clears cache for all 2467 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2468 // we can't make this static. 2469 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2470 includeDiskFiles ? 1 : 0, 0); 2471 } 2472 2473 /** 2474 * Make sure that clearing the form data removes the adapter from the 2475 * currently focused textfield if there is one. 2476 */ 2477 public void clearFormData() { 2478 if (inEditingMode()) { 2479 AutoCompleteAdapter adapter = null; 2480 mWebTextView.setAdapterCustom(adapter); 2481 } 2482 } 2483 2484 /** 2485 * Tell the WebView to clear its internal back/forward list. 2486 */ 2487 public void clearHistory() { 2488 mCallbackProxy.getBackForwardList().setClearPending(); 2489 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2490 } 2491 2492 /** 2493 * Clear the SSL preferences table stored in response to proceeding with SSL 2494 * certificate errors. 2495 */ 2496 public void clearSslPreferences() { 2497 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2498 } 2499 2500 /** 2501 * Return the WebBackForwardList for this WebView. This contains the 2502 * back/forward list for use in querying each item in the history stack. 2503 * This is a copy of the private WebBackForwardList so it contains only a 2504 * snapshot of the current state. Multiple calls to this method may return 2505 * different objects. The object returned from this method will not be 2506 * updated to reflect any new state. 2507 */ 2508 public WebBackForwardList copyBackForwardList() { 2509 return mCallbackProxy.getBackForwardList().clone(); 2510 } 2511 2512 /* 2513 * Highlight and scroll to the next occurance of String in findAll. 2514 * Wraps the page infinitely, and scrolls. Must be called after 2515 * calling findAll. 2516 * 2517 * @param forward Direction to search. 2518 */ 2519 public void findNext(boolean forward) { 2520 if (0 == mNativeClass) return; // client isn't initialized 2521 nativeFindNext(forward); 2522 } 2523 2524 /* 2525 * Find all instances of find on the page and highlight them. 2526 * @param find String to find. 2527 * @return int The number of occurances of the String "find" 2528 * that were found. 2529 */ 2530 public int findAll(String find) { 2531 if (0 == mNativeClass) return 0; // client isn't initialized 2532 int result = find != null ? nativeFindAll(find.toLowerCase(), 2533 find.toUpperCase()) : 0; 2534 invalidate(); 2535 mLastFind = find; 2536 return result; 2537 } 2538 2539 /** 2540 * @hide 2541 */ 2542 public void setFindIsUp(boolean isUp) { 2543 mFindIsUp = isUp; 2544 if (0 == mNativeClass) return; // client isn't initialized 2545 nativeSetFindIsUp(isUp); 2546 } 2547 2548 /** 2549 * @hide 2550 */ 2551 public int findIndex() { 2552 if (0 == mNativeClass) return -1; 2553 return nativeFindIndex(); 2554 } 2555 2556 // Used to know whether the find dialog is open. Affects whether 2557 // or not we draw the highlights for matches. 2558 private boolean mFindIsUp; 2559 2560 // Keep track of the last string sent, so we can search again after an 2561 // orientation change or the dismissal of the soft keyboard. 2562 private String mLastFind; 2563 2564 /** 2565 * Return the first substring consisting of the address of a physical 2566 * location. Currently, only addresses in the United States are detected, 2567 * and consist of: 2568 * - a house number 2569 * - a street name 2570 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2571 * - a city name 2572 * - a state or territory, either spelled out or two-letter abbr. 2573 * - an optional 5 digit or 9 digit zip code. 2574 * 2575 * All names must be correctly capitalized, and the zip code, if present, 2576 * must be valid for the state. The street type must be a standard USPS 2577 * spelling or abbreviation. The state or territory must also be spelled 2578 * or abbreviated using USPS standards. The house number may not exceed 2579 * five digits. 2580 * @param addr The string to search for addresses. 2581 * 2582 * @return the address, or if no address is found, return null. 2583 */ 2584 public static String findAddress(String addr) { 2585 return findAddress(addr, false); 2586 } 2587 2588 /** 2589 * @hide 2590 * Return the first substring consisting of the address of a physical 2591 * location. Currently, only addresses in the United States are detected, 2592 * and consist of: 2593 * - a house number 2594 * - a street name 2595 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2596 * - a city name 2597 * - a state or territory, either spelled out or two-letter abbr. 2598 * - an optional 5 digit or 9 digit zip code. 2599 * 2600 * Names are optionally capitalized, and the zip code, if present, 2601 * must be valid for the state. The street type must be a standard USPS 2602 * spelling or abbreviation. The state or territory must also be spelled 2603 * or abbreviated using USPS standards. The house number may not exceed 2604 * five digits. 2605 * @param addr The string to search for addresses. 2606 * @param caseInsensitive addr Set to true to make search ignore case. 2607 * 2608 * @return the address, or if no address is found, return null. 2609 */ 2610 public static String findAddress(String addr, boolean caseInsensitive) { 2611 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2612 } 2613 2614 /* 2615 * Clear the highlighting surrounding text matches created by findAll. 2616 */ 2617 public void clearMatches() { 2618 mLastFind = ""; 2619 if (mNativeClass == 0) 2620 return; 2621 nativeSetFindIsEmpty(); 2622 invalidate(); 2623 } 2624 2625 /** 2626 * @hide 2627 */ 2628 public void notifyFindDialogDismissed() { 2629 if (mWebViewCore == null) { 2630 return; 2631 } 2632 clearMatches(); 2633 setFindIsUp(false); 2634 // Now that the dialog has been removed, ensure that we scroll to a 2635 // location that is not beyond the end of the page. 2636 pinScrollTo(mScrollX, mScrollY, false, 0); 2637 invalidate(); 2638 } 2639 2640 /** 2641 * Query the document to see if it contains any image references. The 2642 * message object will be dispatched with arg1 being set to 1 if images 2643 * were found and 0 if the document does not reference any images. 2644 * @param response The message that will be dispatched with the result. 2645 */ 2646 public void documentHasImages(Message response) { 2647 if (response == null) { 2648 return; 2649 } 2650 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2651 } 2652 2653 @Override 2654 public void computeScroll() { 2655 if (mScroller.computeScrollOffset()) { 2656 int oldX = mScrollX; 2657 int oldY = mScrollY; 2658 mScrollX = mScroller.getCurrX(); 2659 mScrollY = mScroller.getCurrY(); 2660 postInvalidate(); // So we draw again 2661 if (oldX != mScrollX || oldY != mScrollY) { 2662 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2663 } else { 2664 abortAnimation(); 2665 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 2666 WebViewCore.resumePriority(); 2667 WebViewCore.resumeUpdatePicture(mWebViewCore); 2668 } 2669 } else { 2670 super.computeScroll(); 2671 } 2672 } 2673 2674 private static int computeDuration(int dx, int dy) { 2675 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2676 int duration = distance * 1000 / STD_SPEED; 2677 return Math.min(duration, MAX_DURATION); 2678 } 2679 2680 // helper to pin the scrollBy parameters (already in view coordinates) 2681 // returns true if the scroll was changed 2682 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2683 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2684 } 2685 // helper to pin the scrollTo parameters (already in view coordinates) 2686 // returns true if the scroll was changed 2687 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2688 x = pinLocX(x); 2689 y = pinLocY(y); 2690 int dx = x - mScrollX; 2691 int dy = y - mScrollY; 2692 2693 if ((dx | dy) == 0) { 2694 return false; 2695 } 2696 if (animate) { 2697 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2698 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2699 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2700 awakenScrollBars(mScroller.getDuration()); 2701 invalidate(); 2702 } else { 2703 abortAnimation(); // just in case 2704 scrollTo(x, y); 2705 } 2706 return true; 2707 } 2708 2709 // Scale from content to view coordinates, and pin. 2710 // Also called by jni webview.cpp 2711 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2712 if (mDrawHistory) { 2713 // disallow WebView to change the scroll position as History Picture 2714 // is used in the view system. 2715 // TODO: as we switchOutDrawHistory when trackball or navigation 2716 // keys are hit, this should be safe. Right? 2717 return false; 2718 } 2719 cx = contentToViewDimension(cx); 2720 cy = contentToViewDimension(cy); 2721 if (mHeightCanMeasure) { 2722 // move our visible rect according to scroll request 2723 if (cy != 0) { 2724 Rect tempRect = new Rect(); 2725 calcOurVisibleRect(tempRect); 2726 tempRect.offset(cx, cy); 2727 requestRectangleOnScreen(tempRect); 2728 } 2729 // FIXME: We scroll horizontally no matter what because currently 2730 // ScrollView and ListView will not scroll horizontally. 2731 // FIXME: Why do we only scroll horizontally if there is no 2732 // vertical scroll? 2733// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2734 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2735 } else { 2736 return pinScrollBy(cx, cy, animate, 0); 2737 } 2738 } 2739 2740 /** 2741 * Called by CallbackProxy when the page finishes loading. 2742 * @param url The URL of the page which has finished loading. 2743 */ 2744 /* package */ void onPageFinished(String url) { 2745 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2746 // If the user is now on a different page, or has scrolled the page 2747 // past the point where the title bar is offscreen, ignore the 2748 // scroll request. 2749 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2750 && mScrollX == 0 && mScrollY == 0) { 2751 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2752 SLIDE_TITLE_DURATION); 2753 } 2754 mPageThatNeedsToSlideTitleBarOffScreen = null; 2755 } 2756 2757 injectAccessibilityForUrl(url); 2758 } 2759 2760 /** 2761 * This method injects accessibility in the loaded document if accessibility 2762 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 2763 * If no URL specific script is found or JavaScript is disabled we fallback to 2764 * the default {@link AccessibilityInjector} implementation. 2765 * 2766 * @param url The URL loaded by this {@link WebView}. 2767 */ 2768 private void injectAccessibilityForUrl(String url) { 2769 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 2770 if (getSettings().getJavaScriptEnabled()) { 2771 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 2772 } else if (mAccessibilityInjector == null) { 2773 mAccessibilityInjector = new AccessibilityInjector(this); 2774 } 2775 } else { 2776 // it is possible that accessibility was turned off between reloads 2777 mAccessibilityInjector = null; 2778 } 2779 } 2780 2781 /** 2782 * The URL of a page that sent a message to scroll the title bar off screen. 2783 * 2784 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2785 * title bar off the screen. Sometimes, the scroll position is set before 2786 * the page finishes loading. Rather than scrolling while the page is still 2787 * loading, keep track of the URL and new scroll position so we can perform 2788 * the scroll once the page finishes loading. 2789 */ 2790 private String mPageThatNeedsToSlideTitleBarOffScreen; 2791 2792 /** 2793 * The destination Y scroll position to be used when the page finishes 2794 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2795 */ 2796 private int mYDistanceToSlideTitleOffScreen; 2797 2798 // scale from content to view coordinates, and pin 2799 // return true if pin caused the final x/y different than the request cx/cy, 2800 // and a future scroll may reach the request cx/cy after our size has 2801 // changed 2802 // return false if the view scroll to the exact position as it is requested, 2803 // where negative numbers are taken to mean 0 2804 private boolean setContentScrollTo(int cx, int cy) { 2805 if (mDrawHistory) { 2806 // disallow WebView to change the scroll position as History Picture 2807 // is used in the view system. 2808 // One known case where this is called is that WebCore tries to 2809 // restore the scroll position. As history Picture already uses the 2810 // saved scroll position, it is ok to skip this. 2811 return false; 2812 } 2813 int vx; 2814 int vy; 2815 if ((cx | cy) == 0) { 2816 // If the page is being scrolled to (0,0), do not add in the title 2817 // bar's height, and simply scroll to (0,0). (The only other work 2818 // in contentToView_ is to multiply, so this would not change 0.) 2819 vx = 0; 2820 vy = 0; 2821 } else { 2822 vx = contentToViewX(cx); 2823 vy = contentToViewY(cy); 2824 } 2825// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2826// vx + " " + vy + "]"); 2827 // Some mobile sites attempt to scroll the title bar off the page by 2828 // scrolling to (0,1). If we are at the top left corner of the 2829 // page, assume this is an attempt to scroll off the title bar, and 2830 // animate the title bar off screen slowly enough that the user can see 2831 // it. 2832 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2833 && mTitleBar != null) { 2834 // FIXME: 100 should be defined somewhere as our max progress. 2835 if (getProgress() < 100) { 2836 // Wait to scroll the title bar off screen until the page has 2837 // finished loading. Keep track of the URL and the destination 2838 // Y position 2839 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2840 mYDistanceToSlideTitleOffScreen = vy; 2841 } else { 2842 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2843 } 2844 // Since we are animating, we have not yet reached the desired 2845 // scroll position. Do not return true to request another attempt 2846 return false; 2847 } 2848 pinScrollTo(vx, vy, false, 0); 2849 // If the request was to scroll to a negative coordinate, treat it as if 2850 // it was a request to scroll to 0 2851 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2852 return true; 2853 } else { 2854 return false; 2855 } 2856 } 2857 2858 // scale from content to view coordinates, and pin 2859 private void spawnContentScrollTo(int cx, int cy) { 2860 if (mDrawHistory) { 2861 // disallow WebView to change the scroll position as History Picture 2862 // is used in the view system. 2863 return; 2864 } 2865 int vx = contentToViewX(cx); 2866 int vy = contentToViewY(cy); 2867 pinScrollTo(vx, vy, true, 0); 2868 } 2869 2870 /** 2871 * These are from webkit, and are in content coordinate system (unzoomed) 2872 */ 2873 private void contentSizeChanged(boolean updateLayout) { 2874 // suppress 0,0 since we usually see real dimensions soon after 2875 // this avoids drawing the prev content in a funny place. If we find a 2876 // way to consolidate these notifications, this check may become 2877 // obsolete 2878 if ((mContentWidth | mContentHeight) == 0) { 2879 return; 2880 } 2881 2882 if (mHeightCanMeasure) { 2883 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2884 || updateLayout) { 2885 requestLayout(); 2886 } 2887 } else if (mWidthCanMeasure) { 2888 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2889 || updateLayout) { 2890 requestLayout(); 2891 } 2892 } else { 2893 // If we don't request a layout, try to send our view size to the 2894 // native side to ensure that WebCore has the correct dimensions. 2895 sendViewSizeZoom(false); 2896 } 2897 } 2898 2899 /** 2900 * Set the WebViewClient that will receive various notifications and 2901 * requests. This will replace the current handler. 2902 * @param client An implementation of WebViewClient. 2903 */ 2904 public void setWebViewClient(WebViewClient client) { 2905 mCallbackProxy.setWebViewClient(client); 2906 } 2907 2908 /** 2909 * Gets the WebViewClient 2910 * @return the current WebViewClient instance. 2911 * 2912 *@hide pending API council approval. 2913 */ 2914 public WebViewClient getWebViewClient() { 2915 return mCallbackProxy.getWebViewClient(); 2916 } 2917 2918 /** 2919 * Register the interface to be used when content can not be handled by 2920 * the rendering engine, and should be downloaded instead. This will replace 2921 * the current handler. 2922 * @param listener An implementation of DownloadListener. 2923 */ 2924 public void setDownloadListener(DownloadListener listener) { 2925 mCallbackProxy.setDownloadListener(listener); 2926 } 2927 2928 /** 2929 * Set the chrome handler. This is an implementation of WebChromeClient for 2930 * use in handling Javascript dialogs, favicons, titles, and the progress. 2931 * This will replace the current handler. 2932 * @param client An implementation of WebChromeClient. 2933 */ 2934 public void setWebChromeClient(WebChromeClient client) { 2935 mCallbackProxy.setWebChromeClient(client); 2936 } 2937 2938 /** 2939 * Gets the chrome handler. 2940 * @return the current WebChromeClient instance. 2941 * 2942 * @hide API council approval. 2943 */ 2944 public WebChromeClient getWebChromeClient() { 2945 return mCallbackProxy.getWebChromeClient(); 2946 } 2947 2948 /** 2949 * Set the back/forward list client. This is an implementation of 2950 * WebBackForwardListClient for handling new items and changes in the 2951 * history index. 2952 * @param client An implementation of WebBackForwardListClient. 2953 * {@hide} 2954 */ 2955 public void setWebBackForwardListClient(WebBackForwardListClient client) { 2956 mCallbackProxy.setWebBackForwardListClient(client); 2957 } 2958 2959 /** 2960 * Gets the WebBackForwardListClient. 2961 * {@hide} 2962 */ 2963 public WebBackForwardListClient getWebBackForwardListClient() { 2964 return mCallbackProxy.getWebBackForwardListClient(); 2965 } 2966 2967 /** 2968 * Set the Picture listener. This is an interface used to receive 2969 * notifications of a new Picture. 2970 * @param listener An implementation of WebView.PictureListener. 2971 */ 2972 public void setPictureListener(PictureListener listener) { 2973 mPictureListener = listener; 2974 } 2975 2976 /** 2977 * {@hide} 2978 */ 2979 /* FIXME: Debug only! Remove for SDK! */ 2980 public void externalRepresentation(Message callback) { 2981 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2982 } 2983 2984 /** 2985 * {@hide} 2986 */ 2987 /* FIXME: Debug only! Remove for SDK! */ 2988 public void documentAsText(Message callback) { 2989 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2990 } 2991 2992 /** 2993 * Use this function to bind an object to Javascript so that the 2994 * methods can be accessed from Javascript. 2995 * <p><strong>IMPORTANT:</strong> 2996 * <ul> 2997 * <li> Using addJavascriptInterface() allows JavaScript to control your 2998 * application. This can be a very useful feature or a dangerous security 2999 * issue. When the HTML in the WebView is untrustworthy (for example, part 3000 * or all of the HTML is provided by some person or process), then an 3001 * attacker could inject HTML that will execute your code and possibly any 3002 * code of the attacker's choosing.<br> 3003 * Do not use addJavascriptInterface() unless all of the HTML in this 3004 * WebView was written by you.</li> 3005 * <li> The Java object that is bound runs in another thread and not in 3006 * the thread that it was constructed in.</li> 3007 * </ul></p> 3008 * @param obj The class instance to bind to Javascript 3009 * @param interfaceName The name to used to expose the class in Javascript 3010 */ 3011 public void addJavascriptInterface(Object obj, String interfaceName) { 3012 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3013 arg.mObject = obj; 3014 arg.mInterfaceName = interfaceName; 3015 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3016 } 3017 3018 /** 3019 * Return the WebSettings object used to control the settings for this 3020 * WebView. 3021 * @return A WebSettings object that can be used to control this WebView's 3022 * settings. 3023 */ 3024 public WebSettings getSettings() { 3025 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3026 } 3027 3028 /** 3029 * Use this method to inform the webview about packages that are installed 3030 * in the system. This information will be used by the 3031 * navigator.isApplicationInstalled() API. 3032 * @param packageNames is a set of package names that are known to be 3033 * installed in the system. 3034 * 3035 * @hide not a public API 3036 */ 3037 public void addPackageNames(Set<String> packageNames) { 3038 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 3039 } 3040 3041 /** 3042 * Use this method to inform the webview about single packages that are 3043 * installed in the system. This information will be used by the 3044 * navigator.isApplicationInstalled() API. 3045 * @param packageName is the name of a package that is known to be 3046 * installed in the system. 3047 * 3048 * @hide not a public API 3049 */ 3050 public void addPackageName(String packageName) { 3051 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3052 } 3053 3054 /** 3055 * Use this method to inform the webview about packages that are uninstalled 3056 * in the system. This information will be used by the 3057 * navigator.isApplicationInstalled() API. 3058 * @param packageName is the name of a package that has been uninstalled in 3059 * the system. 3060 * 3061 * @hide not a public API 3062 */ 3063 public void removePackageName(String packageName) { 3064 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3065 } 3066 3067 /** 3068 * Return the list of currently loaded plugins. 3069 * @return The list of currently loaded plugins. 3070 * 3071 * @deprecated This was used for Gears, which has been deprecated. 3072 */ 3073 @Deprecated 3074 public static synchronized PluginList getPluginList() { 3075 return new PluginList(); 3076 } 3077 3078 /** 3079 * @deprecated This was used for Gears, which has been deprecated. 3080 */ 3081 @Deprecated 3082 public void refreshPlugins(boolean reloadOpenPages) { } 3083 3084 //------------------------------------------------------------------------- 3085 // Override View methods 3086 //------------------------------------------------------------------------- 3087 3088 @Override 3089 protected void finalize() throws Throwable { 3090 try { 3091 destroy(); 3092 } finally { 3093 super.finalize(); 3094 } 3095 } 3096 3097 @Override 3098 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3099 if (child == mTitleBar) { 3100 // When drawing the title bar, move it horizontally to always show 3101 // at the top of the WebView. 3102 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3103 } 3104 return super.drawChild(canvas, child, drawingTime); 3105 } 3106 3107 private void drawContent(Canvas canvas) { 3108 // Update the buttons in the picture, so when we draw the picture 3109 // to the screen, they are in the correct state. 3110 // Tell the native side if user is a) touching the screen, 3111 // b) pressing the trackball down, or c) pressing the enter key 3112 // If the cursor is on a button, we need to draw it in the pressed 3113 // state. 3114 // If mNativeClass is 0, we should not reach here, so we do not 3115 // need to check it again. 3116 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3117 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3118 || mTrackballDown || mGotCenterDown, false); 3119 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3120 } 3121 3122 @Override 3123 protected void onDraw(Canvas canvas) { 3124 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3125 if (mNativeClass == 0) { 3126 return; 3127 } 3128 3129 // if both mContentWidth and mContentHeight are 0, it means there is no 3130 // valid Picture passed to WebView yet. This can happen when WebView 3131 // just starts. Draw the background and return. 3132 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3133 canvas.drawColor(mBackgroundColor); 3134 return; 3135 } 3136 3137 int saveCount = canvas.save(); 3138 if (mTitleBar != null) { 3139 canvas.translate(0, (int) mTitleBar.getHeight()); 3140 } 3141 if (mDragTrackerHandler == null) { 3142 drawContent(canvas); 3143 } else { 3144 if (!mDragTrackerHandler.draw(canvas)) { 3145 // sometimes the tracker doesn't draw, even though its active 3146 drawContent(canvas); 3147 } 3148 if (mDragTrackerHandler.isFinished()) { 3149 mDragTrackerHandler = null; 3150 } 3151 } 3152 canvas.restoreToCount(saveCount); 3153 3154 // Now draw the shadow. 3155 int titleH = getVisibleTitleHeight(); 3156 if (mTitleBar != null && titleH == 0) { 3157 int height = (int) (5f * getContext().getResources() 3158 .getDisplayMetrics().density); 3159 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3160 mScrollY + height); 3161 mTitleShadow.draw(canvas); 3162 } 3163 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3164 invalidate(); 3165 } 3166 if (inEditingMode()) mWebTextView.onDrawSubstitute(); 3167 mWebViewCore.signalRepaintDone(); 3168 3169 // paint the highlight in the end 3170 if (!mTouchHighlightRegion.isEmpty()) { 3171 if (mTouchHightlightPaint == null) { 3172 mTouchHightlightPaint = new Paint(); 3173 mTouchHightlightPaint.setColor(mHightlightColor); 3174 mTouchHightlightPaint.setAntiAlias(true); 3175 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3176 TOUCH_HIGHLIGHT_ARC)); 3177 } 3178 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3179 mTouchHightlightPaint); 3180 } 3181 if (DEBUG_TOUCH_HIGHLIGHT) { 3182 if (getSettings().getNavDump()) { 3183 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3184 if (mTouchCrossHairColor == null) { 3185 mTouchCrossHairColor = new Paint(); 3186 mTouchCrossHairColor.setColor(Color.RED); 3187 } 3188 canvas.drawLine(mTouchHighlightX - mNavSlop, 3189 mTouchHighlightY - mNavSlop, mTouchHighlightX 3190 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3191 + 1, mTouchCrossHairColor); 3192 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3193 mTouchHighlightY - mNavSlop, mTouchHighlightX 3194 - mNavSlop, 3195 mTouchHighlightY + mNavSlop + 1, 3196 mTouchCrossHairColor); 3197 } 3198 } 3199 } 3200 } 3201 3202 private void removeTouchHighlight(boolean removePendingMessage) { 3203 if (removePendingMessage) { 3204 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3205 } 3206 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3207 } 3208 3209 @Override 3210 public void setLayoutParams(ViewGroup.LayoutParams params) { 3211 if (params.height == LayoutParams.WRAP_CONTENT) { 3212 mWrapContent = true; 3213 } 3214 super.setLayoutParams(params); 3215 } 3216 3217 @Override 3218 public boolean performLongClick() { 3219 // performLongClick() is the result of a delayed message. If we switch 3220 // to windows overview, the WebView will be temporarily removed from the 3221 // view system. In that case, do nothing. 3222 if (getParent() == null) return false; 3223 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3224 // Send the click so that the textfield is in focus 3225 centerKeyPressOnTextField(); 3226 rebuildWebTextView(); 3227 } else { 3228 clearTextEntry(true); 3229 } 3230 if (inEditingMode()) { 3231 return mWebTextView.performLongClick(); 3232 } 3233 /* if long click brings up a context menu, the super function 3234 * returns true and we're done. Otherwise, nothing happened when 3235 * the user clicked. */ 3236 if (super.performLongClick()) { 3237 return true; 3238 } 3239 /* In the case where the application hasn't already handled the long 3240 * click action, look for a word under the click. If one is found, 3241 * animate the text selection into view. 3242 * FIXME: no animation code yet */ 3243 if (mSelectingText) return false; // long click does nothing on selection 3244 int x = viewToContentX((int) mLastTouchX + mScrollX); 3245 int y = viewToContentY((int) mLastTouchY + mScrollY); 3246 setUpSelect(); 3247 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3248 nativeSetExtendSelection(); 3249 getWebChromeClient().onSelectionStart(this); 3250 return true; 3251 } 3252 notifySelectDialogDismissed(); 3253 return false; 3254 } 3255 3256 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3257 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3258 Rect vBox = contentToViewRect(contentBounds); 3259 Rect visibleRect = new Rect(); 3260 calcOurVisibleRect(visibleRect); 3261 // If the textfield is on screen, place the WebTextView in 3262 // its new place, accounting for our new scroll/zoom values, 3263 // and adjust its textsize. 3264 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3265 : visibleRect.contains(vBox)) { 3266 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3267 vBox.height()); 3268 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3269 contentToViewDimension( 3270 nativeFocusCandidateTextSize())); 3271 return true; 3272 } else { 3273 // The textfield is now off screen. The user probably 3274 // was not zooming to see the textfield better. Remove 3275 // the WebTextView. If the user types a key, and the 3276 // textfield is still in focus, we will reconstruct 3277 // the WebTextView and scroll it back on screen. 3278 mWebTextView.remove(); 3279 return false; 3280 } 3281 } 3282 3283 private void onZoomAnimationStart() { 3284 // If it is in password mode, turn it off so it does not draw misplaced. 3285 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3286 mWebTextView.setInPassword(false); 3287 } 3288 } 3289 3290 private void onZoomAnimationEnd() { 3291 // adjust the edit text view if needed 3292 if (inEditingMode() && didUpdateTextViewBounds(false) && nativeFocusCandidateIsPassword()) { 3293 // If it is a password field, start drawing the WebTextView once 3294 // again. 3295 mWebTextView.setInPassword(true); 3296 } 3297 } 3298 3299 void onFixedLengthZoomAnimationStart() { 3300 WebViewCore.pauseUpdatePicture(getWebViewCore()); 3301 onZoomAnimationStart(); 3302 } 3303 3304 void onFixedLengthZoomAnimationEnd() { 3305 WebViewCore.resumeUpdatePicture(mWebViewCore); 3306 onZoomAnimationEnd(); 3307 } 3308 3309 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 3310 Paint.DITHER_FLAG | 3311 Paint.SUBPIXEL_TEXT_FLAG; 3312 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 3313 Paint.DITHER_FLAG; 3314 3315 private final DrawFilter mZoomFilter = 3316 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 3317 // If we need to trade better quality for speed, set mScrollFilter to null 3318 private final DrawFilter mScrollFilter = 3319 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 3320 3321 private void drawCoreAndCursorRing(Canvas canvas, int color, 3322 boolean drawCursorRing) { 3323 if (mDrawHistory) { 3324 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3325 canvas.drawPicture(mHistoryPicture); 3326 return; 3327 } 3328 if (mNativeClass == 0) return; 3329 3330 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 3331 boolean animateScroll = ((!mScroller.isFinished() 3332 || mVelocityTracker != null) 3333 && (mTouchMode != TOUCH_DRAG_MODE || 3334 mHeldMotionless != MOTIONLESS_TRUE)) 3335 || mDeferTouchMode == TOUCH_DRAG_MODE; 3336 if (mTouchMode == TOUCH_DRAG_MODE) { 3337 if (mHeldMotionless == MOTIONLESS_PENDING) { 3338 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3339 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3340 mHeldMotionless = MOTIONLESS_FALSE; 3341 } 3342 if (mHeldMotionless == MOTIONLESS_FALSE) { 3343 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3344 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3345 mHeldMotionless = MOTIONLESS_PENDING; 3346 } 3347 } 3348 if (animateZoom) { 3349 mZoomManager.animateZoom(canvas); 3350 } else { 3351 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3352 } 3353 3354 boolean UIAnimationsRunning = false; 3355 // Currently for each draw we compute the animation values; 3356 // We may in the future decide to do that independently. 3357 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3358 UIAnimationsRunning = true; 3359 // If we have unfinished (or unstarted) animations, 3360 // we ask for a repaint. 3361 invalidate(); 3362 } 3363 3364 // decide which adornments to draw 3365 int extras = DRAW_EXTRAS_NONE; 3366 if (DebugFlags.WEB_VIEW) { 3367 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 3368 + " mSelectingText=" + mSelectingText 3369 + " nativePageShouldHandleShiftAndArrows()=" 3370 + nativePageShouldHandleShiftAndArrows() 3371 + " animateZoom=" + animateZoom); 3372 } 3373 if (mFindIsUp) { 3374 extras = DRAW_EXTRAS_FIND; 3375 } else if (mSelectingText) { 3376 extras = DRAW_EXTRAS_SELECTION; 3377 nativeSetSelectionPointer(mDrawSelectionPointer, 3378 mZoomManager.getInvScale(), 3379 mSelectX, mSelectY - getTitleHeight()); 3380 } else if (drawCursorRing) { 3381 extras = DRAW_EXTRAS_CURSOR_RING; 3382 } 3383 DrawFilter df = null; 3384 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 3385 df = mZoomFilter; 3386 } else if (animateScroll) { 3387 df = mScrollFilter; 3388 } 3389 canvas.setDrawFilter(df); 3390 int content = nativeDraw(canvas, color, extras, true); 3391 canvas.setDrawFilter(null); 3392 if (content != 0) { 3393 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 3394 } 3395 3396 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3397 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3398 mTouchMode = TOUCH_SHORTPRESS_MODE; 3399 } 3400 } 3401 if (mFocusSizeChanged) { 3402 mFocusSizeChanged = false; 3403 // If we are zooming, this will get handled above, when the zoom 3404 // finishes. We also do not need to do this unless the WebTextView 3405 // is showing. 3406 if (!animateZoom && inEditingMode()) { 3407 didUpdateTextViewBounds(true); 3408 } 3409 } 3410 } 3411 3412 // draw history 3413 private boolean mDrawHistory = false; 3414 private Picture mHistoryPicture = null; 3415 private int mHistoryWidth = 0; 3416 private int mHistoryHeight = 0; 3417 3418 // Only check the flag, can be called from WebCore thread 3419 boolean drawHistory() { 3420 return mDrawHistory; 3421 } 3422 3423 int getHistoryPictureWidth() { 3424 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 3425 } 3426 3427 // Should only be called in UI thread 3428 void switchOutDrawHistory() { 3429 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3430 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 3431 mDrawHistory = false; 3432 mHistoryPicture = null; 3433 invalidate(); 3434 int oldScrollX = mScrollX; 3435 int oldScrollY = mScrollY; 3436 mScrollX = pinLocX(mScrollX); 3437 mScrollY = pinLocY(mScrollY); 3438 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3439 mUserScroll = false; 3440 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3441 oldScrollY); 3442 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3443 } else { 3444 sendOurVisibleRect(); 3445 } 3446 } 3447 } 3448 3449 WebViewCore.CursorData cursorData() { 3450 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3451 result.mMoveGeneration = nativeMoveGeneration(); 3452 result.mFrame = nativeCursorFramePointer(); 3453 Point position = nativeCursorPosition(); 3454 result.mX = position.x; 3455 result.mY = position.y; 3456 return result; 3457 } 3458 3459 /** 3460 * Delete text from start to end in the focused textfield. If there is no 3461 * focus, or if start == end, silently fail. If start and end are out of 3462 * order, swap them. 3463 * @param start Beginning of selection to delete. 3464 * @param end End of selection to delete. 3465 */ 3466 /* package */ void deleteSelection(int start, int end) { 3467 mTextGeneration++; 3468 WebViewCore.TextSelectionData data 3469 = new WebViewCore.TextSelectionData(start, end); 3470 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3471 data); 3472 } 3473 3474 /** 3475 * Set the selection to (start, end) in the focused textfield. If start and 3476 * end are out of order, swap them. 3477 * @param start Beginning of selection. 3478 * @param end End of selection. 3479 */ 3480 /* package */ void setSelection(int start, int end) { 3481 if (mWebViewCore != null) { 3482 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3483 } 3484 } 3485 3486 @Override 3487 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3488 InputConnection connection = super.onCreateInputConnection(outAttrs); 3489 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3490 return connection; 3491 } 3492 3493 /** 3494 * Called in response to a message from webkit telling us that the soft 3495 * keyboard should be launched. 3496 */ 3497 private void displaySoftKeyboard(boolean isTextView) { 3498 InputMethodManager imm = (InputMethodManager) 3499 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3500 3501 // bring it back to the default scale so that user can enter text 3502 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 3503 if (zoom) { 3504 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 3505 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 3506 } 3507 if (isTextView) { 3508 rebuildWebTextView(); 3509 if (inEditingMode()) { 3510 imm.showSoftInput(mWebTextView, 0); 3511 if (zoom) { 3512 didUpdateTextViewBounds(true); 3513 } 3514 return; 3515 } 3516 } 3517 // Used by plugins. 3518 // Also used if the navigation cache is out of date, and 3519 // does not recognize that a textfield is in focus. In that 3520 // case, use WebView as the targeted view. 3521 // see http://b/issue?id=2457459 3522 imm.showSoftInput(this, 0); 3523 } 3524 3525 // Called by WebKit to instruct the UI to hide the keyboard 3526 private void hideSoftKeyboard() { 3527 InputMethodManager imm = (InputMethodManager) 3528 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3529 3530 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3531 } 3532 3533 /* 3534 * This method checks the current focus and cursor and potentially rebuilds 3535 * mWebTextView to have the appropriate properties, such as password, 3536 * multiline, and what text it contains. It also removes it if necessary. 3537 */ 3538 /* package */ void rebuildWebTextView() { 3539 // If the WebView does not have focus, do nothing until it gains focus. 3540 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3541 return; 3542 } 3543 boolean alreadyThere = inEditingMode(); 3544 // inEditingMode can only return true if mWebTextView is non-null, 3545 // so we can safely call remove() if (alreadyThere) 3546 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3547 if (alreadyThere) { 3548 mWebTextView.remove(); 3549 } 3550 return; 3551 } 3552 // At this point, we know we have found an input field, so go ahead 3553 // and create the WebTextView if necessary. 3554 if (mWebTextView == null) { 3555 mWebTextView = new WebTextView(mContext, WebView.this); 3556 // Initialize our generation number. 3557 mTextGeneration = 0; 3558 } 3559 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3560 contentToViewDimension(nativeFocusCandidateTextSize())); 3561 Rect visibleRect = new Rect(); 3562 calcOurContentVisibleRect(visibleRect); 3563 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3564 // should be in content coordinates. 3565 Rect bounds = nativeFocusCandidateNodeBounds(); 3566 Rect vBox = contentToViewRect(bounds); 3567 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3568 if (!Rect.intersects(bounds, visibleRect)) { 3569 mWebTextView.bringIntoView(); 3570 } 3571 String text = nativeFocusCandidateText(); 3572 int nodePointer = nativeFocusCandidatePointer(); 3573 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3574 // It is possible that we have the same textfield, but it has moved, 3575 // i.e. In the case of opening/closing the screen. 3576 // In that case, we need to set the dimensions, but not the other 3577 // aspects. 3578 // If the text has been changed by webkit, update it. However, if 3579 // there has been more UI text input, ignore it. We will receive 3580 // another update when that text is recognized. 3581 if (text != null && !text.equals(mWebTextView.getText().toString()) 3582 && nativeTextGeneration() == mTextGeneration) { 3583 mWebTextView.setTextAndKeepSelection(text); 3584 } 3585 } else { 3586 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3587 Gravity.RIGHT : Gravity.NO_GRAVITY); 3588 // This needs to be called before setType, which may call 3589 // requestFormData, and it needs to have the correct nodePointer. 3590 mWebTextView.setNodePointer(nodePointer); 3591 mWebTextView.setType(nativeFocusCandidateType()); 3592 if (null == text) { 3593 if (DebugFlags.WEB_VIEW) { 3594 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3595 } 3596 text = ""; 3597 } 3598 mWebTextView.setTextAndKeepSelection(text); 3599 InputMethodManager imm = InputMethodManager.peekInstance(); 3600 if (imm != null && imm.isActive(mWebTextView)) { 3601 imm.restartInput(mWebTextView); 3602 } 3603 } 3604 mWebTextView.requestFocus(); 3605 } 3606 3607 /** 3608 * Called by WebTextView to find saved form data associated with the 3609 * textfield 3610 * @param name Name of the textfield. 3611 * @param nodePointer Pointer to the node of the textfield, so it can be 3612 * compared to the currently focused textfield when the data is 3613 * retrieved. 3614 */ 3615 /* package */ void requestFormData(String name, int nodePointer) { 3616 if (mWebViewCore.getSettings().getSaveFormData()) { 3617 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3618 update.arg1 = nodePointer; 3619 RequestFormData updater = new RequestFormData(name, getUrl(), 3620 update); 3621 Thread t = new Thread(updater); 3622 t.start(); 3623 } 3624 } 3625 3626 /** 3627 * Pass a message to find out the <label> associated with the <input> 3628 * identified by nodePointer 3629 * @param framePointer Pointer to the frame containing the <input> node 3630 * @param nodePointer Pointer to the node for which a <label> is desired. 3631 */ 3632 /* package */ void requestLabel(int framePointer, int nodePointer) { 3633 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3634 nodePointer); 3635 } 3636 3637 /* 3638 * This class requests an Adapter for the WebTextView which shows past 3639 * entries stored in the database. It is a Runnable so that it can be done 3640 * in its own thread, without slowing down the UI. 3641 */ 3642 private class RequestFormData implements Runnable { 3643 private String mName; 3644 private String mUrl; 3645 private Message mUpdateMessage; 3646 3647 public RequestFormData(String name, String url, Message msg) { 3648 mName = name; 3649 mUrl = url; 3650 mUpdateMessage = msg; 3651 } 3652 3653 public void run() { 3654 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3655 if (pastEntries.size() > 0) { 3656 AutoCompleteAdapter adapter = new 3657 AutoCompleteAdapter(mContext, pastEntries); 3658 mUpdateMessage.obj = adapter; 3659 mUpdateMessage.sendToTarget(); 3660 } 3661 } 3662 } 3663 3664 /** 3665 * Dump the display tree to "/sdcard/displayTree.txt" 3666 * 3667 * @hide debug only 3668 */ 3669 public void dumpDisplayTree() { 3670 nativeDumpDisplayTree(getUrl()); 3671 } 3672 3673 /** 3674 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3675 * "/sdcard/domTree.txt" 3676 * 3677 * @hide debug only 3678 */ 3679 public void dumpDomTree(boolean toFile) { 3680 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3681 } 3682 3683 /** 3684 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3685 * to "/sdcard/renderTree.txt" 3686 * 3687 * @hide debug only 3688 */ 3689 public void dumpRenderTree(boolean toFile) { 3690 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3691 } 3692 3693 /** 3694 * Dump the V8 counters to standard output. 3695 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3696 * true. Otherwise, this will do nothing. 3697 * 3698 * @hide debug only 3699 */ 3700 public void dumpV8Counters() { 3701 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3702 } 3703 3704 // This is used to determine long press with the center key. Does not 3705 // affect long press with the trackball/touch. 3706 private boolean mGotCenterDown = false; 3707 3708 @Override 3709 public boolean onKeyDown(int keyCode, KeyEvent event) { 3710 if (DebugFlags.WEB_VIEW) { 3711 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3712 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3713 } 3714 3715 if (mNativeClass == 0) { 3716 return false; 3717 } 3718 3719 // do this hack up front, so it always works, regardless of touch-mode 3720 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3721 mAutoRedraw = !mAutoRedraw; 3722 if (mAutoRedraw) { 3723 invalidate(); 3724 } 3725 return true; 3726 } 3727 3728 // Bubble up the key event if 3729 // 1. it is a system key; or 3730 // 2. the host application wants to handle it; 3731 // 3. the accessibility injector is present and wants to handle it; 3732 if (event.isSystem() 3733 || mCallbackProxy.uiOverrideKeyEvent(event) 3734 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 3735 return false; 3736 } 3737 3738 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3739 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3740 if (nativePageShouldHandleShiftAndArrows()) { 3741 mShiftIsPressed = true; 3742 } else if (!nativeCursorWantsKeyEvents() && !mSelectingText) { 3743 setUpSelect(); 3744 } 3745 } 3746 3747 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 3748 pageUp(false); 3749 return true; 3750 } 3751 3752 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 3753 pageDown(false); 3754 return true; 3755 } 3756 3757 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3758 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3759 switchOutDrawHistory(); 3760 if (nativePageShouldHandleShiftAndArrows()) { 3761 letPageHandleNavKey(keyCode, event.getEventTime(), true); 3762 return true; 3763 } 3764 if (mSelectingText) { 3765 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3766 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3767 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3768 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3769 int multiplier = event.getRepeatCount() + 1; 3770 moveSelection(xRate * multiplier, yRate * multiplier); 3771 return true; 3772 } 3773 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 3774 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3775 return true; 3776 } 3777 // Bubble up the key event as WebView doesn't handle it 3778 return false; 3779 } 3780 3781 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3782 switchOutDrawHistory(); 3783 if (event.getRepeatCount() == 0) { 3784 if (mSelectingText) { 3785 return true; // discard press if copy in progress 3786 } 3787 mGotCenterDown = true; 3788 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3789 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3790 // Already checked mNativeClass, so we do not need to check it 3791 // again. 3792 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3793 return true; 3794 } 3795 // Bubble up the key event as WebView doesn't handle it 3796 return false; 3797 } 3798 3799 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3800 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3801 // turn off copy select if a shift-key combo is pressed 3802 selectionDone(); 3803 mShiftIsPressed = false; 3804 } 3805 3806 if (getSettings().getNavDump()) { 3807 switch (keyCode) { 3808 case KeyEvent.KEYCODE_4: 3809 dumpDisplayTree(); 3810 break; 3811 case KeyEvent.KEYCODE_5: 3812 case KeyEvent.KEYCODE_6: 3813 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3814 break; 3815 case KeyEvent.KEYCODE_7: 3816 case KeyEvent.KEYCODE_8: 3817 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3818 break; 3819 case KeyEvent.KEYCODE_9: 3820 nativeInstrumentReport(); 3821 return true; 3822 } 3823 } 3824 3825 if (nativeCursorIsTextInput()) { 3826 // This message will put the node in focus, for the DOM's notion 3827 // of focus, and make the focuscontroller active 3828 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3829 nativeCursorNodePointer()); 3830 // This will bring up the WebTextView and put it in focus, for 3831 // our view system's notion of focus 3832 rebuildWebTextView(); 3833 // Now we need to pass the event to it 3834 if (inEditingMode()) { 3835 mWebTextView.setDefaultSelection(); 3836 return mWebTextView.dispatchKeyEvent(event); 3837 } 3838 } else if (nativeHasFocusNode()) { 3839 // In this case, the cursor is not on a text input, but the focus 3840 // might be. Check it, and if so, hand over to the WebTextView. 3841 rebuildWebTextView(); 3842 if (inEditingMode()) { 3843 mWebTextView.setDefaultSelection(); 3844 return mWebTextView.dispatchKeyEvent(event); 3845 } 3846 } 3847 3848 // TODO: should we pass all the keys to DOM or check the meta tag 3849 if (nativeCursorWantsKeyEvents() || true) { 3850 // pass the key to DOM 3851 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3852 // return true as DOM handles the key 3853 return true; 3854 } 3855 3856 // Bubble up the key event as WebView doesn't handle it 3857 return false; 3858 } 3859 3860 @Override 3861 public boolean onKeyUp(int keyCode, KeyEvent event) { 3862 if (DebugFlags.WEB_VIEW) { 3863 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3864 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3865 } 3866 3867 if (mNativeClass == 0) { 3868 return false; 3869 } 3870 3871 // special CALL handling when cursor node's href is "tel:XXX" 3872 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3873 String text = nativeCursorText(); 3874 if (!nativeCursorIsTextInput() && text != null 3875 && text.startsWith(SCHEME_TEL)) { 3876 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3877 getContext().startActivity(intent); 3878 return true; 3879 } 3880 } 3881 3882 // Bubble up the key event if 3883 // 1. it is a system key; or 3884 // 2. the host application wants to handle it; 3885 // 3. the accessibility injector is present and wants to handle it; 3886 if (event.isSystem() 3887 || mCallbackProxy.uiOverrideKeyEvent(event) 3888 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 3889 return false; 3890 } 3891 3892 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3893 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3894 if (nativePageShouldHandleShiftAndArrows()) { 3895 mShiftIsPressed = false; 3896 } else if (copySelection()) { 3897 selectionDone(); 3898 return true; 3899 } 3900 } 3901 3902 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3903 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3904 if (nativePageShouldHandleShiftAndArrows()) { 3905 letPageHandleNavKey(keyCode, event.getEventTime(), false); 3906 return true; 3907 } 3908 // always handle the navigation keys in the UI thread 3909 // Bubble up the key event as WebView doesn't handle it 3910 return false; 3911 } 3912 3913 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3914 // remove the long press message first 3915 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3916 mGotCenterDown = false; 3917 3918 if (mSelectingText) { 3919 if (mExtendSelection) { 3920 copySelection(); 3921 selectionDone(); 3922 } else { 3923 mExtendSelection = true; 3924 nativeSetExtendSelection(); 3925 invalidate(); // draw the i-beam instead of the arrow 3926 } 3927 return true; // discard press if copy in progress 3928 } 3929 3930 // perform the single click 3931 Rect visibleRect = sendOurVisibleRect(); 3932 // Note that sendOurVisibleRect calls viewToContent, so the 3933 // coordinates should be in content coordinates. 3934 if (!nativeCursorIntersects(visibleRect)) { 3935 return false; 3936 } 3937 WebViewCore.CursorData data = cursorData(); 3938 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3939 playSoundEffect(SoundEffectConstants.CLICK); 3940 if (nativeCursorIsTextInput()) { 3941 rebuildWebTextView(); 3942 centerKeyPressOnTextField(); 3943 if (inEditingMode()) { 3944 mWebTextView.setDefaultSelection(); 3945 } 3946 return true; 3947 } 3948 clearTextEntry(true); 3949 nativeSetFollowedLink(true); 3950 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3951 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3952 nativeCursorNodePointer()); 3953 } 3954 return true; 3955 } 3956 3957 // TODO: should we pass all the keys to DOM or check the meta tag 3958 if (nativeCursorWantsKeyEvents() || true) { 3959 // pass the key to DOM 3960 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3961 // return true as DOM handles the key 3962 return true; 3963 } 3964 3965 // Bubble up the key event as WebView doesn't handle it 3966 return false; 3967 } 3968 3969 /** 3970 * @hide pending API council approval. 3971 */ 3972 public void setUpSelect() { 3973 if (0 == mNativeClass) return; // client isn't initialized 3974 if (inFullScreenMode()) return; 3975 if (mSelectingText) return; 3976 mExtendSelection = false; 3977 mSelectingText = mDrawSelectionPointer = true; 3978 // don't let the picture change during text selection 3979 WebViewCore.pauseUpdatePicture(mWebViewCore); 3980 nativeResetSelection(); 3981 if (nativeHasCursorNode()) { 3982 Rect rect = nativeCursorNodeBounds(); 3983 mSelectX = contentToViewX(rect.left); 3984 mSelectY = contentToViewY(rect.top); 3985 } else if (mLastTouchY > getVisibleTitleHeight()) { 3986 mSelectX = mScrollX + (int) mLastTouchX; 3987 mSelectY = mScrollY + (int) mLastTouchY; 3988 } else { 3989 mSelectX = mScrollX + getViewWidth() / 2; 3990 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3991 } 3992 nativeHideCursor(); 3993 } 3994 3995 /** 3996 * Use this method to put the WebView into text selection mode. 3997 * Do not rely on this functionality; it will be deprecated in the future. 3998 */ 3999 public void emulateShiftHeld() { 4000 setUpSelect(); 4001 } 4002 4003 /** 4004 * @hide pending API council approval. 4005 */ 4006 public void selectAll() { 4007 if (0 == mNativeClass) return; // client isn't initialized 4008 if (inFullScreenMode()) return; 4009 if (!mSelectingText) setUpSelect(); 4010 nativeSelectAll(); 4011 mDrawSelectionPointer = false; 4012 mExtendSelection = true; 4013 invalidate(); 4014 } 4015 4016 /** 4017 * @hide pending API council approval. 4018 */ 4019 public boolean selectDialogIsUp() { 4020 return mSelectingText; 4021 } 4022 4023 /** 4024 * @hide pending API council approval. 4025 */ 4026 public void notifySelectDialogDismissed() { 4027 mSelectingText = false; 4028 WebViewCore.resumeUpdatePicture(mWebViewCore); 4029 } 4030 4031 /** 4032 * @hide pending API council approval. 4033 */ 4034 public void selectionDone() { 4035 if (mSelectingText) { 4036 getWebChromeClient().onSelectionDone(this); 4037 invalidate(); // redraw without selection 4038 notifySelectDialogDismissed(); 4039 } 4040 } 4041 4042 /** 4043 * @hide pending API council approval. 4044 */ 4045 public boolean copySelection() { 4046 boolean copiedSomething = false; 4047 String selection = getSelection(); 4048 if (selection != "") { 4049 if (DebugFlags.WEB_VIEW) { 4050 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4051 } 4052 Toast.makeText(mContext 4053 , com.android.internal.R.string.text_copied 4054 , Toast.LENGTH_SHORT).show(); 4055 copiedSomething = true; 4056 try { 4057 IClipboard clip = IClipboard.Stub.asInterface( 4058 ServiceManager.getService("clipboard")); 4059 clip.setClipboardText(selection); 4060 } catch (android.os.RemoteException e) { 4061 Log.e(LOGTAG, "Clipboard failed", e); 4062 } 4063 } 4064 invalidate(); // remove selection region and pointer 4065 return copiedSomething; 4066 } 4067 4068 /** 4069 * @hide pending API council approval. 4070 */ 4071 public String getSelection() { 4072 if (mNativeClass == 0) return ""; 4073 return nativeGetSelection(); 4074 } 4075 4076 @Override 4077 protected void onAttachedToWindow() { 4078 super.onAttachedToWindow(); 4079 if (hasWindowFocus()) setActive(true); 4080 } 4081 4082 @Override 4083 protected void onDetachedFromWindow() { 4084 clearTextEntry(false); 4085 mZoomManager.dismissZoomPicker(); 4086 if (hasWindowFocus()) setActive(false); 4087 super.onDetachedFromWindow(); 4088 } 4089 4090 @Override 4091 protected void onVisibilityChanged(View changedView, int visibility) { 4092 super.onVisibilityChanged(changedView, visibility); 4093 // The zoomManager may be null if the webview is created from XML that 4094 // specifies the view's visibility param as not visible (see http://b/2794841) 4095 if (visibility != View.VISIBLE && mZoomManager != null) { 4096 mZoomManager.dismissZoomPicker(); 4097 } 4098 } 4099 4100 /** 4101 * @deprecated WebView no longer needs to implement 4102 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4103 */ 4104 @Deprecated 4105 public void onChildViewAdded(View parent, View child) {} 4106 4107 /** 4108 * @deprecated WebView no longer needs to implement 4109 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4110 */ 4111 @Deprecated 4112 public void onChildViewRemoved(View p, View child) {} 4113 4114 /** 4115 * @deprecated WebView should not have implemented 4116 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4117 * does nothing now. 4118 */ 4119 @Deprecated 4120 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4121 } 4122 4123 private void setActive(boolean active) { 4124 if (active) { 4125 if (hasFocus()) { 4126 // If our window regained focus, and we have focus, then begin 4127 // drawing the cursor ring 4128 mDrawCursorRing = true; 4129 if (mNativeClass != 0) { 4130 nativeRecordButtons(true, false, true); 4131 if (inEditingMode()) { 4132 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4133 } 4134 } 4135 } else { 4136 // If our window gained focus, but we do not have it, do not 4137 // draw the cursor ring. 4138 mDrawCursorRing = false; 4139 // We do not call nativeRecordButtons here because we assume 4140 // that when we lost focus, or window focus, it got called with 4141 // false for the first parameter 4142 } 4143 } else { 4144 if (!mZoomManager.isZoomPickerVisible()) { 4145 /* 4146 * The external zoom controls come in their own window, so our 4147 * window loses focus. Our policy is to not draw the cursor ring 4148 * if our window is not focused, but this is an exception since 4149 * the user can still navigate the web page with the zoom 4150 * controls showing. 4151 */ 4152 mDrawCursorRing = false; 4153 } 4154 mGotKeyDown = false; 4155 mShiftIsPressed = false; 4156 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4157 mTouchMode = TOUCH_DONE_MODE; 4158 if (mNativeClass != 0) { 4159 nativeRecordButtons(false, false, true); 4160 } 4161 setFocusControllerInactive(); 4162 } 4163 invalidate(); 4164 } 4165 4166 // To avoid drawing the cursor ring, and remove the TextView when our window 4167 // loses focus. 4168 @Override 4169 public void onWindowFocusChanged(boolean hasWindowFocus) { 4170 setActive(hasWindowFocus); 4171 if (hasWindowFocus) { 4172 BrowserFrame.sJavaBridge.setActiveWebView(this); 4173 } else { 4174 BrowserFrame.sJavaBridge.removeActiveWebView(this); 4175 } 4176 super.onWindowFocusChanged(hasWindowFocus); 4177 } 4178 4179 /* 4180 * Pass a message to WebCore Thread, telling the WebCore::Page's 4181 * FocusController to be "inactive" so that it will 4182 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4183 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4184 */ 4185 /* package */ void setFocusControllerInactive() { 4186 // Do not need to also check whether mWebViewCore is null, because 4187 // mNativeClass is only set if mWebViewCore is non null 4188 if (mNativeClass == 0) return; 4189 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4190 } 4191 4192 @Override 4193 protected void onFocusChanged(boolean focused, int direction, 4194 Rect previouslyFocusedRect) { 4195 if (DebugFlags.WEB_VIEW) { 4196 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4197 } 4198 if (focused) { 4199 // When we regain focus, if we have window focus, resume drawing 4200 // the cursor ring 4201 if (hasWindowFocus()) { 4202 mDrawCursorRing = true; 4203 if (mNativeClass != 0) { 4204 nativeRecordButtons(true, false, true); 4205 } 4206 //} else { 4207 // The WebView has gained focus while we do not have 4208 // windowfocus. When our window lost focus, we should have 4209 // called nativeRecordButtons(false...) 4210 } 4211 } else { 4212 // When we lost focus, unless focus went to the TextView (which is 4213 // true if we are in editing mode), stop drawing the cursor ring. 4214 if (!inEditingMode()) { 4215 mDrawCursorRing = false; 4216 if (mNativeClass != 0) { 4217 nativeRecordButtons(false, false, true); 4218 } 4219 setFocusControllerInactive(); 4220 } 4221 mGotKeyDown = false; 4222 } 4223 4224 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4225 } 4226 4227 /** 4228 * @hide 4229 */ 4230 @Override 4231 protected boolean setFrame(int left, int top, int right, int bottom) { 4232 boolean changed = super.setFrame(left, top, right, bottom); 4233 if (!changed && mHeightCanMeasure) { 4234 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4235 // in WebViewCore after we get the first layout. We do call 4236 // requestLayout() when we get contentSizeChanged(). But the View 4237 // system won't call onSizeChanged if the dimension is not changed. 4238 // In this case, we need to call sendViewSizeZoom() explicitly to 4239 // notify the WebKit about the new dimensions. 4240 sendViewSizeZoom(false); 4241 } 4242 return changed; 4243 } 4244 4245 @Override 4246 protected void onSizeChanged(int w, int h, int ow, int oh) { 4247 super.onSizeChanged(w, h, ow, oh); 4248 4249 // adjust the max viewport width depending on the view dimensions. This 4250 // is to ensure the scaling is not going insane. So do not shrink it if 4251 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4252 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 4253 if (newMaxViewportWidth > sMaxViewportWidth) { 4254 sMaxViewportWidth = newMaxViewportWidth; 4255 } 4256 4257 mZoomManager.onSizeChanged(w, h, ow, oh); 4258 } 4259 4260 @Override 4261 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4262 super.onScrollChanged(l, t, oldl, oldt); 4263 sendOurVisibleRect(); 4264 // update WebKit if visible title bar height changed. The logic is same 4265 // as getVisibleTitleHeight. 4266 int titleHeight = getTitleHeight(); 4267 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4268 sendViewSizeZoom(false); 4269 } 4270 } 4271 4272 @Override 4273 public boolean dispatchKeyEvent(KeyEvent event) { 4274 boolean dispatch = true; 4275 4276 // Textfields, plugins, and contentEditable nodes need to receive the 4277 // shift up key even if another key was released while the shift key 4278 // was held down. 4279 if (!inEditingMode() && (mNativeClass == 0 4280 || !nativePageShouldHandleShiftAndArrows())) { 4281 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4282 mGotKeyDown = true; 4283 } else { 4284 if (!mGotKeyDown) { 4285 /* 4286 * We got a key up for which we were not the recipient of 4287 * the original key down. Don't give it to the view. 4288 */ 4289 dispatch = false; 4290 } 4291 mGotKeyDown = false; 4292 } 4293 } 4294 4295 if (dispatch) { 4296 return super.dispatchKeyEvent(event); 4297 } else { 4298 // We didn't dispatch, so let something else handle the key 4299 return false; 4300 } 4301 } 4302 4303 // Here are the snap align logic: 4304 // 1. If it starts nearly horizontally or vertically, snap align; 4305 // 2. If there is a dramitic direction change, let it go; 4306 // 3. If there is a same direction back and forth, lock it. 4307 4308 // adjustable parameters 4309 private int mMinLockSnapReverseDistance; 4310 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4311 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4312 4313 private static int sign(float x) { 4314 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4315 } 4316 4317 // if the page can scroll <= this value, we won't allow the drag tracker 4318 // to have any effect. 4319 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4320 4321 private class DragTrackerHandler { 4322 private final DragTracker mProxy; 4323 private final float mStartY, mStartX; 4324 private final float mMinDY, mMinDX; 4325 private final float mMaxDY, mMaxDX; 4326 private float mCurrStretchY, mCurrStretchX; 4327 private int mSX, mSY; 4328 private Interpolator mInterp; 4329 private float[] mXY = new float[2]; 4330 4331 // inner (non-state) classes can't have enums :( 4332 private static final int DRAGGING_STATE = 0; 4333 private static final int ANIMATING_STATE = 1; 4334 private static final int FINISHED_STATE = 2; 4335 private int mState; 4336 4337 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4338 mProxy = proxy; 4339 4340 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4341 int viewTop = getScrollY(); 4342 int viewBottom = viewTop + getHeight(); 4343 4344 mStartY = y; 4345 mMinDY = -viewTop; 4346 mMaxDY = docBottom - viewBottom; 4347 4348 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4349 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4350 " up/down= " + mMinDY + " " + mMaxDY); 4351 } 4352 4353 int docRight = computeHorizontalScrollRange(); 4354 int viewLeft = getScrollX(); 4355 int viewRight = viewLeft + getWidth(); 4356 mStartX = x; 4357 mMinDX = -viewLeft; 4358 mMaxDX = docRight - viewRight; 4359 4360 mState = DRAGGING_STATE; 4361 mProxy.onStartDrag(x, y); 4362 4363 // ensure we buildBitmap at least once 4364 mSX = -99999; 4365 } 4366 4367 private float computeStretch(float delta, float min, float max) { 4368 float stretch = 0; 4369 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4370 if (delta < min) { 4371 stretch = delta - min; 4372 } else if (delta > max) { 4373 stretch = delta - max; 4374 } 4375 } 4376 return stretch; 4377 } 4378 4379 public void dragTo(float x, float y) { 4380 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4381 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4382 4383 if ((mSnapScrollMode & SNAP_X) != 0) { 4384 sy = 0; 4385 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4386 sx = 0; 4387 } 4388 4389 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4390 mCurrStretchX = sx; 4391 mCurrStretchY = sy; 4392 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4393 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4394 " " + sy); 4395 } 4396 if (mProxy.onStretchChange(sx, sy)) { 4397 invalidate(); 4398 } 4399 } 4400 } 4401 4402 public void stopDrag() { 4403 final int DURATION = 200; 4404 int now = (int)SystemClock.uptimeMillis(); 4405 mInterp = new Interpolator(2); 4406 mXY[0] = mCurrStretchX; 4407 mXY[1] = mCurrStretchY; 4408 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4409 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4410 mInterp.setKeyFrame(0, now, mXY, blend); 4411 float[] zerozero = new float[] { 0, 0 }; 4412 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4413 mState = ANIMATING_STATE; 4414 4415 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4416 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4417 } 4418 } 4419 4420 // Call this after each draw. If it ruturns null, the tracker is done 4421 public boolean isFinished() { 4422 return mState == FINISHED_STATE; 4423 } 4424 4425 private int hiddenHeightOfTitleBar() { 4426 return getTitleHeight() - getVisibleTitleHeight(); 4427 } 4428 4429 // need a way to know if 565 or 8888 is the right config for 4430 // capturing the display and giving it to the drag proxy 4431 private Bitmap.Config offscreenBitmapConfig() { 4432 // hard code 565 for now 4433 return Bitmap.Config.RGB_565; 4434 } 4435 4436 /* If the tracker draws, then this returns true, otherwise it will 4437 return false, and draw nothing. 4438 */ 4439 public boolean draw(Canvas canvas) { 4440 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4441 int sx = getScrollX(); 4442 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4443 if (mSX != sx || mSY != sy) { 4444 buildBitmap(sx, sy); 4445 mSX = sx; 4446 mSY = sy; 4447 } 4448 4449 if (mState == ANIMATING_STATE) { 4450 Interpolator.Result result = mInterp.timeToValues(mXY); 4451 if (result == Interpolator.Result.FREEZE_END) { 4452 mState = FINISHED_STATE; 4453 return false; 4454 } else { 4455 mProxy.onStretchChange(mXY[0], mXY[1]); 4456 invalidate(); 4457 // fall through to the draw 4458 } 4459 } 4460 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4461 canvas.translate(sx, sy); 4462 mProxy.onDraw(canvas); 4463 canvas.restoreToCount(count); 4464 return true; 4465 } 4466 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4467 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4468 mCurrStretchX + " " + mCurrStretchY); 4469 } 4470 return false; 4471 } 4472 4473 private void buildBitmap(int sx, int sy) { 4474 int w = getWidth(); 4475 int h = getViewHeight(); 4476 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4477 Canvas canvas = new Canvas(bm); 4478 canvas.translate(-sx, -sy); 4479 drawContent(canvas); 4480 4481 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4482 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4483 " " + sy + " " + w + " " + h); 4484 } 4485 mProxy.onBitmapChange(bm); 4486 } 4487 } 4488 4489 /** @hide */ 4490 public static class DragTracker { 4491 public void onStartDrag(float x, float y) {} 4492 public boolean onStretchChange(float sx, float sy) { 4493 // return true to have us inval the view 4494 return false; 4495 } 4496 public void onStopDrag() {} 4497 public void onBitmapChange(Bitmap bm) {} 4498 public void onDraw(Canvas canvas) {} 4499 } 4500 4501 /** @hide */ 4502 public DragTracker getDragTracker() { 4503 return mDragTracker; 4504 } 4505 4506 /** @hide */ 4507 public void setDragTracker(DragTracker tracker) { 4508 mDragTracker = tracker; 4509 } 4510 4511 private DragTracker mDragTracker; 4512 private DragTrackerHandler mDragTrackerHandler; 4513 4514 private boolean hitFocusedPlugin(int contentX, int contentY) { 4515 if (DebugFlags.WEB_VIEW) { 4516 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4517 Rect r = nativeFocusNodeBounds(); 4518 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4519 + ", " + r.right + ", " + r.bottom + ")"); 4520 } 4521 return nativeFocusIsPlugin() 4522 && nativeFocusNodeBounds().contains(contentX, contentY); 4523 } 4524 4525 private boolean shouldForwardTouchEvent() { 4526 return mFullScreenHolder != null || (mForwardTouchEvents 4527 && !mSelectingText 4528 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4529 } 4530 4531 private boolean inFullScreenMode() { 4532 return mFullScreenHolder != null; 4533 } 4534 4535 void onPinchToZoomAnimationStart() { 4536 // cancel the single touch handling 4537 cancelTouch(); 4538 onZoomAnimationStart(); 4539 } 4540 4541 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 4542 onZoomAnimationEnd(); 4543 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 4544 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 4545 // as it may trigger the unwanted fling. 4546 mTouchMode = TOUCH_PINCH_DRAG; 4547 mConfirmMove = true; 4548 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 4549 } 4550 4551 private void startScrollingLayer(float gestureX, float gestureY) { 4552 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4553 int contentX = viewToContentX((int) gestureX + mScrollX); 4554 int contentY = viewToContentY((int) gestureY + mScrollY); 4555 mScrollingLayer = nativeScrollableLayer(contentX, contentY); 4556 if (mScrollingLayer != 0) { 4557 mTouchMode = TOUCH_DRAG_LAYER_MODE; 4558 } 4559 } 4560 } 4561 4562 // 1/(density * density) used to compute the distance between points. 4563 // Computed in init(). 4564 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 4565 4566 // The distance between two points reported in onTouchEvent scaled by the 4567 // density of the screen. 4568 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 4569 4570 @Override 4571 public boolean onTouchEvent(MotionEvent ev) { 4572 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4573 return false; 4574 } 4575 4576 if (DebugFlags.WEB_VIEW) { 4577 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4578 + mTouchMode); 4579 } 4580 4581 int action = ev.getAction(); 4582 float x = ev.getX(); 4583 float y = ev.getY(); 4584 long eventTime = ev.getEventTime(); 4585 4586 final ScaleGestureDetector detector = 4587 mZoomManager.getMultiTouchGestureDetector(); 4588 boolean skipScaleGesture = false; 4589 // Set to the mid-point of a two-finger gesture used to detect if the 4590 // user has touched a layer. 4591 float gestureX = x; 4592 float gestureY = y; 4593 if (!detector.isInProgress()) { 4594 // The gesture for scrolling a layer is two fingers close together. 4595 // FIXME: we may consider giving WebKit an option to handle 4596 // multi-touch events later. 4597 if (ev.getPointerCount() > 1) { 4598 float dx = ev.getX(1) - ev.getX(0); 4599 float dy = ev.getY(1) - ev.getY(0); 4600 float dist = (dx * dx + dy * dy) * 4601 DRAG_LAYER_INVERSE_DENSITY_SQUARED; 4602 // Use the approximate center to determine if the gesture is in 4603 // a layer. 4604 gestureX = ev.getX(0) + (dx * .5f); 4605 gestureY = ev.getY(0) + (dy * .5f); 4606 // Now use a consistent point for tracking movement. 4607 if (ev.getX(0) < ev.getX(1)) { 4608 x = ev.getX(0); 4609 y = ev.getY(0); 4610 } else { 4611 x = ev.getX(1); 4612 y = ev.getY(1); 4613 } 4614 action = ev.getActionMasked(); 4615 if (dist < DRAG_LAYER_FINGER_DISTANCE) { 4616 skipScaleGesture = true; 4617 } else if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 4618 // Fingers moved too far apart while dragging, the user 4619 // might be trying to zoom. 4620 mTouchMode = TOUCH_INIT_MODE; 4621 } 4622 } 4623 } 4624 4625 // FIXME: we may consider to give WebKit an option to handle multi-touch 4626 // events later. 4627 if (mZoomManager.supportsMultiTouchZoom() && ev.getPointerCount() > 1 && 4628 mTouchMode != TOUCH_DRAG_LAYER_MODE && !skipScaleGesture) { 4629 4630 // if the page disallows zoom, skip multi-pointer action 4631 if (mZoomManager.isZoomScaleFixed()) { 4632 return true; 4633 } 4634 4635 if (!detector.isInProgress() && 4636 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 4637 // Insert a fake pointer down event in order to start 4638 // the zoom scale detector. 4639 MotionEvent temp = MotionEvent.obtain(ev); 4640 // Clear the original event and set it to 4641 // ACTION_POINTER_DOWN. 4642 temp.setAction(temp.getAction() & 4643 ~MotionEvent.ACTION_MASK | 4644 MotionEvent.ACTION_POINTER_DOWN); 4645 detector.onTouchEvent(temp); 4646 } 4647 4648 detector.onTouchEvent(ev); 4649 4650 if (detector.isInProgress()) { 4651 mLastTouchTime = eventTime; 4652 return true; 4653 } 4654 4655 x = detector.getFocusX(); 4656 y = detector.getFocusY(); 4657 action = ev.getAction() & MotionEvent.ACTION_MASK; 4658 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4659 cancelTouch(); 4660 action = MotionEvent.ACTION_DOWN; 4661 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4662 // set mLastTouchX/Y to the remaining point 4663 mLastTouchX = x; 4664 mLastTouchY = y; 4665 } else if (action == MotionEvent.ACTION_MOVE) { 4666 // negative x or y indicate it is on the edge, skip it. 4667 if (x < 0 || y < 0) { 4668 return true; 4669 } 4670 } 4671 } 4672 4673 // Due to the touch screen edge effect, a touch closer to the edge 4674 // always snapped to the edge. As getViewWidth() can be different from 4675 // getWidth() due to the scrollbar, adjusting the point to match 4676 // getViewWidth(). Same applied to the height. 4677 x = Math.min(x, getViewWidth() - 1); 4678 y = Math.min(y, getViewHeightWithTitle() - 1); 4679 4680 float fDeltaX = mLastTouchX - x; 4681 float fDeltaY = mLastTouchY - y; 4682 int deltaX = (int) fDeltaX; 4683 int deltaY = (int) fDeltaY; 4684 int contentX = viewToContentX((int) x + mScrollX); 4685 int contentY = viewToContentY((int) y + mScrollY); 4686 4687 switch (action) { 4688 case MotionEvent.ACTION_DOWN: { 4689 mPreventDefault = PREVENT_DEFAULT_NO; 4690 mConfirmMove = false; 4691 if (!mScroller.isFinished()) { 4692 // stop the current scroll animation, but if this is 4693 // the start of a fling, allow it to add to the current 4694 // fling's velocity 4695 mScroller.abortAnimation(); 4696 mTouchMode = TOUCH_DRAG_START_MODE; 4697 mConfirmMove = true; 4698 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4699 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4700 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4701 if (getSettings().supportTouchOnly()) { 4702 removeTouchHighlight(true); 4703 } 4704 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4705 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4706 } else { 4707 // commit the short press action for the previous tap 4708 doShortPress(); 4709 mTouchMode = TOUCH_INIT_MODE; 4710 mDeferTouchProcess = (!inFullScreenMode() 4711 && mForwardTouchEvents) ? hitFocusedPlugin( 4712 contentX, contentY) : false; 4713 } 4714 } else { // the normal case 4715 mTouchMode = TOUCH_INIT_MODE; 4716 mDeferTouchProcess = (!inFullScreenMode() 4717 && mForwardTouchEvents) ? hitFocusedPlugin( 4718 contentX, contentY) : false; 4719 mWebViewCore.sendMessage( 4720 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4721 if (getSettings().supportTouchOnly()) { 4722 TouchHighlightData data = new TouchHighlightData(); 4723 data.mX = contentX; 4724 data.mY = contentY; 4725 data.mSlop = viewToContentDimension(mNavSlop); 4726 mWebViewCore.sendMessageDelayed( 4727 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 4728 ViewConfiguration.getTapTimeout()); 4729 if (DEBUG_TOUCH_HIGHLIGHT) { 4730 if (getSettings().getNavDump()) { 4731 mTouchHighlightX = (int) x + mScrollX; 4732 mTouchHighlightY = (int) y + mScrollY; 4733 mPrivateHandler.postDelayed(new Runnable() { 4734 public void run() { 4735 mTouchHighlightX = mTouchHighlightY = 0; 4736 invalidate(); 4737 } 4738 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 4739 } 4740 } 4741 } 4742 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4743 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4744 (eventTime - mLastTouchUpTime), eventTime); 4745 } 4746 if (mSelectingText) { 4747 mDrawSelectionPointer = false; 4748 mSelectionStarted = nativeStartSelection(contentX, contentY); 4749 if (DebugFlags.WEB_VIEW) { 4750 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 4751 } 4752 invalidate(); 4753 } 4754 } 4755 // Trigger the link 4756 if (mTouchMode == TOUCH_INIT_MODE 4757 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4758 mPrivateHandler.sendEmptyMessageDelayed( 4759 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 4760 mPrivateHandler.sendEmptyMessageDelayed( 4761 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 4762 if (inFullScreenMode() || mDeferTouchProcess) { 4763 mPreventDefault = PREVENT_DEFAULT_YES; 4764 } else if (mForwardTouchEvents) { 4765 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 4766 } else { 4767 mPreventDefault = PREVENT_DEFAULT_NO; 4768 } 4769 // pass the touch events from UI thread to WebCore thread 4770 if (shouldForwardTouchEvent()) { 4771 TouchEventData ted = new TouchEventData(); 4772 ted.mAction = action; 4773 ted.mX = contentX; 4774 ted.mY = contentY; 4775 ted.mMetaState = ev.getMetaState(); 4776 ted.mReprocess = mDeferTouchProcess; 4777 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4778 if (mDeferTouchProcess) { 4779 // still needs to set them for compute deltaX/Y 4780 mLastTouchX = x; 4781 mLastTouchY = y; 4782 break; 4783 } 4784 if (!inFullScreenMode()) { 4785 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 4786 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4787 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4788 action, 0), TAP_TIMEOUT); 4789 } 4790 } 4791 } 4792 startTouch(x, y, eventTime); 4793 break; 4794 } 4795 case MotionEvent.ACTION_MOVE: { 4796 boolean firstMove = false; 4797 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 4798 >= mTouchSlopSquare) { 4799 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4800 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4801 mConfirmMove = true; 4802 firstMove = true; 4803 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4804 mTouchMode = TOUCH_INIT_MODE; 4805 } 4806 if (getSettings().supportTouchOnly()) { 4807 removeTouchHighlight(true); 4808 } 4809 } 4810 // pass the touch events from UI thread to WebCore thread 4811 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 4812 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4813 TouchEventData ted = new TouchEventData(); 4814 ted.mAction = action; 4815 ted.mX = contentX; 4816 ted.mY = contentY; 4817 ted.mMetaState = ev.getMetaState(); 4818 ted.mReprocess = mDeferTouchProcess; 4819 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4820 mLastSentTouchTime = eventTime; 4821 if (mDeferTouchProcess) { 4822 break; 4823 } 4824 if (firstMove && !inFullScreenMode()) { 4825 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4826 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4827 action, 0), TAP_TIMEOUT); 4828 } 4829 } 4830 if (mTouchMode == TOUCH_DONE_MODE 4831 || mPreventDefault == PREVENT_DEFAULT_YES) { 4832 // no dragging during scroll zoom animation, or when prevent 4833 // default is yes 4834 break; 4835 } 4836 if (mVelocityTracker == null) { 4837 Log.e(LOGTAG, "Got null mVelocityTracker when " 4838 + "mPreventDefault = " + mPreventDefault 4839 + " mDeferTouchProcess = " + mDeferTouchProcess 4840 + " mTouchMode = " + mTouchMode); 4841 } 4842 mVelocityTracker.addMovement(ev); 4843 if (mSelectingText && mSelectionStarted) { 4844 if (DebugFlags.WEB_VIEW) { 4845 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 4846 } 4847 nativeExtendSelection(contentX, contentY); 4848 invalidate(); 4849 break; 4850 } 4851 4852 if (mTouchMode != TOUCH_DRAG_MODE && 4853 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4854 4855 if (!mConfirmMove) { 4856 break; 4857 } 4858 4859 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 4860 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 4861 // track mLastTouchTime as we may need to do fling at 4862 // ACTION_UP 4863 mLastTouchTime = eventTime; 4864 break; 4865 } 4866 // if it starts nearly horizontal or vertical, enforce it 4867 int ax = Math.abs(deltaX); 4868 int ay = Math.abs(deltaY); 4869 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4870 mSnapScrollMode = SNAP_X; 4871 mSnapPositive = deltaX > 0; 4872 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4873 mSnapScrollMode = SNAP_Y; 4874 mSnapPositive = deltaY > 0; 4875 } 4876 4877 mTouchMode = TOUCH_DRAG_MODE; 4878 mLastTouchX = x; 4879 mLastTouchY = y; 4880 fDeltaX = 0.0f; 4881 fDeltaY = 0.0f; 4882 deltaX = 0; 4883 deltaY = 0; 4884 4885 if (skipScaleGesture) { 4886 startScrollingLayer(gestureX, gestureY); 4887 } 4888 startDrag(); 4889 } 4890 4891 if (mDragTrackerHandler != null) { 4892 mDragTrackerHandler.dragTo(x, y); 4893 } 4894 4895 // do pan 4896 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4897 int newScrollX = pinLocX(mScrollX + deltaX); 4898 int newDeltaX = newScrollX - mScrollX; 4899 if (deltaX != newDeltaX) { 4900 deltaX = newDeltaX; 4901 fDeltaX = (float) newDeltaX; 4902 } 4903 int newScrollY = pinLocY(mScrollY + deltaY); 4904 int newDeltaY = newScrollY - mScrollY; 4905 if (deltaY != newDeltaY) { 4906 deltaY = newDeltaY; 4907 fDeltaY = (float) newDeltaY; 4908 } 4909 } 4910 boolean done = false; 4911 boolean keepScrollBarsVisible = false; 4912 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4913 mLastTouchX = x; 4914 mLastTouchY = y; 4915 keepScrollBarsVisible = done = true; 4916 } else { 4917 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4918 int ax = Math.abs(deltaX); 4919 int ay = Math.abs(deltaY); 4920 if (mSnapScrollMode == SNAP_X) { 4921 // radical change means getting out of snap mode 4922 if (ay > MAX_SLOPE_FOR_DIAG * ax 4923 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4924 mSnapScrollMode = SNAP_NONE; 4925 } 4926 // reverse direction means lock in the snap mode 4927 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4928 (mSnapPositive 4929 ? deltaX < -mMinLockSnapReverseDistance 4930 : deltaX > mMinLockSnapReverseDistance)) { 4931 mSnapScrollMode |= SNAP_LOCK; 4932 } 4933 } else { 4934 // radical change means getting out of snap mode 4935 if (ax > MAX_SLOPE_FOR_DIAG * ay 4936 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4937 mSnapScrollMode = SNAP_NONE; 4938 } 4939 // reverse direction means lock in the snap mode 4940 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4941 (mSnapPositive 4942 ? deltaY < -mMinLockSnapReverseDistance 4943 : deltaY > mMinLockSnapReverseDistance)) { 4944 mSnapScrollMode |= SNAP_LOCK; 4945 } 4946 } 4947 } 4948 if (mSnapScrollMode != SNAP_NONE) { 4949 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4950 deltaY = 0; 4951 } else { 4952 deltaX = 0; 4953 } 4954 } 4955 if ((deltaX | deltaY) != 0) { 4956 if (deltaX != 0) { 4957 mLastTouchX = x; 4958 } 4959 if (deltaY != 0) { 4960 mLastTouchY = y; 4961 } 4962 mHeldMotionless = MOTIONLESS_FALSE; 4963 } else { 4964 // keep the scrollbar on the screen even there is no 4965 // scroll 4966 mLastTouchX = x; 4967 mLastTouchY = y; 4968 keepScrollBarsVisible = true; 4969 } 4970 mLastTouchTime = eventTime; 4971 mUserScroll = true; 4972 } 4973 4974 doDrag(deltaX, deltaY); 4975 4976 // Turn off scrollbars when dragging a layer. 4977 if (keepScrollBarsVisible && 4978 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4979 if (mHeldMotionless != MOTIONLESS_TRUE) { 4980 mHeldMotionless = MOTIONLESS_TRUE; 4981 invalidate(); 4982 } 4983 // keep the scrollbar on the screen even there is no scroll 4984 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4985 false); 4986 // return false to indicate that we can't pan out of the 4987 // view space 4988 return !done; 4989 } 4990 break; 4991 } 4992 case MotionEvent.ACTION_UP: { 4993 if (!isFocused()) requestFocus(); 4994 // pass the touch events from UI thread to WebCore thread 4995 if (shouldForwardTouchEvent()) { 4996 TouchEventData ted = new TouchEventData(); 4997 ted.mAction = action; 4998 ted.mX = contentX; 4999 ted.mY = contentY; 5000 ted.mMetaState = ev.getMetaState(); 5001 ted.mReprocess = mDeferTouchProcess; 5002 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5003 } 5004 mLastTouchUpTime = eventTime; 5005 switch (mTouchMode) { 5006 case TOUCH_DOUBLE_TAP_MODE: // double tap 5007 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5008 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5009 if (inFullScreenMode() || mDeferTouchProcess) { 5010 TouchEventData ted = new TouchEventData(); 5011 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5012 ted.mX = contentX; 5013 ted.mY = contentY; 5014 ted.mMetaState = ev.getMetaState(); 5015 ted.mReprocess = mDeferTouchProcess; 5016 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5017 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5018 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5019 mTouchMode = TOUCH_DONE_MODE; 5020 } 5021 break; 5022 case TOUCH_INIT_MODE: // tap 5023 case TOUCH_SHORTPRESS_START_MODE: 5024 case TOUCH_SHORTPRESS_MODE: 5025 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5026 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5027 if (mConfirmMove) { 5028 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5029 " WebCore's response for touch down."); 5030 if (mPreventDefault != PREVENT_DEFAULT_YES 5031 && (computeMaxScrollX() > 0 5032 || computeMaxScrollY() > 0)) { 5033 // If the user has performed a very quick touch 5034 // sequence it is possible that we may get here 5035 // before WebCore has had a chance to process the events. 5036 // In this case, any call to preventDefault in the 5037 // JS touch handler will not have been executed yet. 5038 // Hence we will see both the UI (now) and WebCore 5039 // (when context switches) handling the event, 5040 // regardless of whether the web developer actually 5041 // doeses preventDefault in their touch handler. This 5042 // is the nature of our asynchronous touch model. 5043 5044 // we will not rewrite drag code here, but we 5045 // will try fling if it applies. 5046 WebViewCore.reducePriority(); 5047 // to get better performance, pause updating the 5048 // picture 5049 WebViewCore.pauseUpdatePicture(mWebViewCore); 5050 // fall through to TOUCH_DRAG_MODE 5051 } else { 5052 // WebKit may consume the touch event and modify 5053 // DOM. drawContentPicture() will be called with 5054 // animateSroll as true for better performance. 5055 // Force redraw in high-quality. 5056 invalidate(); 5057 break; 5058 } 5059 } else { 5060 if (mSelectingText) { 5061 // tapping on selection or controls does nothing 5062 if (!nativeHitSelection(contentX, contentY)) { 5063 selectionDone(); 5064 } 5065 break; 5066 } 5067 // only trigger double tap if the WebView is 5068 // scalable 5069 if (mTouchMode == TOUCH_INIT_MODE 5070 && (canZoomIn() || canZoomOut())) { 5071 mPrivateHandler.sendEmptyMessageDelayed( 5072 RELEASE_SINGLE_TAP, ViewConfiguration 5073 .getDoubleTapTimeout()); 5074 } else { 5075 doShortPress(); 5076 } 5077 break; 5078 } 5079 case TOUCH_DRAG_MODE: 5080 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5081 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5082 // if the user waits a while w/o moving before the 5083 // up, we don't want to do a fling 5084 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5085 if (mVelocityTracker == null) { 5086 Log.e(LOGTAG, "Got null mVelocityTracker when " 5087 + "mPreventDefault = " 5088 + mPreventDefault 5089 + " mDeferTouchProcess = " 5090 + mDeferTouchProcess); 5091 } 5092 mVelocityTracker.addMovement(ev); 5093 // set to MOTIONLESS_IGNORE so that it won't keep 5094 // removing and sending message in 5095 // drawCoreAndCursorRing() 5096 mHeldMotionless = MOTIONLESS_IGNORE; 5097 doFling(); 5098 break; 5099 } 5100 // redraw in high-quality, as we're done dragging 5101 mHeldMotionless = MOTIONLESS_TRUE; 5102 invalidate(); 5103 // fall through 5104 case TOUCH_DRAG_START_MODE: 5105 case TOUCH_DRAG_LAYER_MODE: 5106 // TOUCH_DRAG_START_MODE should not happen for the real 5107 // device as we almost certain will get a MOVE. But this 5108 // is possible on emulator. 5109 mLastVelocity = 0; 5110 WebViewCore.resumePriority(); 5111 WebViewCore.resumeUpdatePicture(mWebViewCore); 5112 break; 5113 } 5114 stopTouch(); 5115 break; 5116 } 5117 case MotionEvent.ACTION_CANCEL: { 5118 if (mTouchMode == TOUCH_DRAG_MODE) { 5119 invalidate(); 5120 } 5121 cancelWebCoreTouchEvent(contentX, contentY, false); 5122 cancelTouch(); 5123 break; 5124 } 5125 } 5126 return true; 5127 } 5128 5129 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5130 if (shouldForwardTouchEvent()) { 5131 if (removeEvents) { 5132 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5133 } 5134 TouchEventData ted = new TouchEventData(); 5135 ted.mX = x; 5136 ted.mY = y; 5137 ted.mAction = MotionEvent.ACTION_CANCEL; 5138 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5139 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5140 } 5141 } 5142 5143 private void startTouch(float x, float y, long eventTime) { 5144 // Remember where the motion event started 5145 mLastTouchX = x; 5146 mLastTouchY = y; 5147 mLastTouchTime = eventTime; 5148 mVelocityTracker = VelocityTracker.obtain(); 5149 mSnapScrollMode = SNAP_NONE; 5150 if (mDragTracker != null) { 5151 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5152 } 5153 } 5154 5155 private void startDrag() { 5156 WebViewCore.reducePriority(); 5157 // to get better performance, pause updating the picture 5158 WebViewCore.pauseUpdatePicture(mWebViewCore); 5159 if (!mDragFromTextInput) { 5160 nativeHideCursor(); 5161 } 5162 5163 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5164 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 5165 mZoomManager.invokeZoomPicker(); 5166 } 5167 } 5168 5169 private void doDrag(int deltaX, int deltaY) { 5170 if ((deltaX | deltaY) != 0) { 5171 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5172 deltaX = viewToContentDimension(deltaX); 5173 deltaY = viewToContentDimension(deltaY); 5174 if (nativeScrollLayer(mScrollingLayer, deltaX, deltaY)) { 5175 invalidate(); 5176 } 5177 return; 5178 } 5179 scrollBy(deltaX, deltaY); 5180 } 5181 mZoomManager.keepZoomPickerVisible(); 5182 } 5183 5184 private void stopTouch() { 5185 if (mDragTrackerHandler != null) { 5186 mDragTrackerHandler.stopDrag(); 5187 } 5188 // we also use mVelocityTracker == null to tell us that we are 5189 // not "moving around", so we can take the slower/prettier 5190 // mode in the drawing code 5191 if (mVelocityTracker != null) { 5192 mVelocityTracker.recycle(); 5193 mVelocityTracker = null; 5194 } 5195 } 5196 5197 private void cancelTouch() { 5198 if (mDragTrackerHandler != null) { 5199 mDragTrackerHandler.stopDrag(); 5200 } 5201 // we also use mVelocityTracker == null to tell us that we are 5202 // not "moving around", so we can take the slower/prettier 5203 // mode in the drawing code 5204 if (mVelocityTracker != null) { 5205 mVelocityTracker.recycle(); 5206 mVelocityTracker = null; 5207 } 5208 if (mTouchMode == TOUCH_DRAG_MODE || 5209 mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5210 WebViewCore.resumePriority(); 5211 WebViewCore.resumeUpdatePicture(mWebViewCore); 5212 } 5213 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5214 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5215 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5216 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5217 if (getSettings().supportTouchOnly()) { 5218 removeTouchHighlight(true); 5219 } 5220 mHeldMotionless = MOTIONLESS_TRUE; 5221 mTouchMode = TOUCH_DONE_MODE; 5222 nativeHideCursor(); 5223 } 5224 5225 private long mTrackballFirstTime = 0; 5226 private long mTrackballLastTime = 0; 5227 private float mTrackballRemainsX = 0.0f; 5228 private float mTrackballRemainsY = 0.0f; 5229 private int mTrackballXMove = 0; 5230 private int mTrackballYMove = 0; 5231 private boolean mSelectingText = false; 5232 private boolean mSelectionStarted = false; 5233 private boolean mExtendSelection = false; 5234 private boolean mDrawSelectionPointer = false; 5235 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5236 private static final int TRACKBALL_TIMEOUT = 200; 5237 private static final int TRACKBALL_WAIT = 100; 5238 private static final int TRACKBALL_SCALE = 400; 5239 private static final int TRACKBALL_SCROLL_COUNT = 5; 5240 private static final int TRACKBALL_MOVE_COUNT = 10; 5241 private static final int TRACKBALL_MULTIPLIER = 3; 5242 private static final int SELECT_CURSOR_OFFSET = 16; 5243 private int mSelectX = 0; 5244 private int mSelectY = 0; 5245 private boolean mFocusSizeChanged = false; 5246 private boolean mShiftIsPressed = false; 5247 private boolean mTrackballDown = false; 5248 private long mTrackballUpTime = 0; 5249 private long mLastCursorTime = 0; 5250 private Rect mLastCursorBounds; 5251 5252 // Set by default; BrowserActivity clears to interpret trackball data 5253 // directly for movement. Currently, the framework only passes 5254 // arrow key events, not trackball events, from one child to the next 5255 private boolean mMapTrackballToArrowKeys = true; 5256 5257 public void setMapTrackballToArrowKeys(boolean setMap) { 5258 mMapTrackballToArrowKeys = setMap; 5259 } 5260 5261 void resetTrackballTime() { 5262 mTrackballLastTime = 0; 5263 } 5264 5265 @Override 5266 public boolean onTrackballEvent(MotionEvent ev) { 5267 long time = ev.getEventTime(); 5268 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5269 if (ev.getY() > 0) pageDown(true); 5270 if (ev.getY() < 0) pageUp(true); 5271 return true; 5272 } 5273 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5274 if (mSelectingText) { 5275 return true; // discard press if copy in progress 5276 } 5277 mTrackballDown = true; 5278 if (mNativeClass == 0) { 5279 return false; 5280 } 5281 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5282 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5283 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5284 nativeSelectBestAt(mLastCursorBounds); 5285 } 5286 if (DebugFlags.WEB_VIEW) { 5287 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5288 + " time=" + time 5289 + " mLastCursorTime=" + mLastCursorTime); 5290 } 5291 if (isInTouchMode()) requestFocusFromTouch(); 5292 return false; // let common code in onKeyDown at it 5293 } 5294 if (ev.getAction() == MotionEvent.ACTION_UP) { 5295 // LONG_PRESS_CENTER is set in common onKeyDown 5296 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5297 mTrackballDown = false; 5298 mTrackballUpTime = time; 5299 if (mSelectingText) { 5300 if (mExtendSelection) { 5301 copySelection(); 5302 selectionDone(); 5303 } else { 5304 mExtendSelection = true; 5305 nativeSetExtendSelection(); 5306 invalidate(); // draw the i-beam instead of the arrow 5307 } 5308 return true; // discard press if copy in progress 5309 } 5310 if (DebugFlags.WEB_VIEW) { 5311 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5312 + " time=" + time 5313 ); 5314 } 5315 return false; // let common code in onKeyUp at it 5316 } 5317 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5318 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5319 return false; 5320 } 5321 if (mTrackballDown) { 5322 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5323 return true; // discard move if trackball is down 5324 } 5325 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5326 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5327 return true; 5328 } 5329 // TODO: alternatively we can do panning as touch does 5330 switchOutDrawHistory(); 5331 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5332 if (DebugFlags.WEB_VIEW) { 5333 Log.v(LOGTAG, "onTrackballEvent time=" 5334 + time + " last=" + mTrackballLastTime); 5335 } 5336 mTrackballFirstTime = time; 5337 mTrackballXMove = mTrackballYMove = 0; 5338 } 5339 mTrackballLastTime = time; 5340 if (DebugFlags.WEB_VIEW) { 5341 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5342 } 5343 mTrackballRemainsX += ev.getX(); 5344 mTrackballRemainsY += ev.getY(); 5345 doTrackball(time); 5346 return true; 5347 } 5348 5349 void moveSelection(float xRate, float yRate) { 5350 if (mNativeClass == 0) 5351 return; 5352 int width = getViewWidth(); 5353 int height = getViewHeight(); 5354 mSelectX += xRate; 5355 mSelectY += yRate; 5356 int maxX = width + mScrollX; 5357 int maxY = height + mScrollY; 5358 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5359 , mSelectX)); 5360 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5361 , mSelectY)); 5362 if (DebugFlags.WEB_VIEW) { 5363 Log.v(LOGTAG, "moveSelection" 5364 + " mSelectX=" + mSelectX 5365 + " mSelectY=" + mSelectY 5366 + " mScrollX=" + mScrollX 5367 + " mScrollY=" + mScrollY 5368 + " xRate=" + xRate 5369 + " yRate=" + yRate 5370 ); 5371 } 5372 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5373 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5374 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5375 : 0; 5376 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5377 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5378 : 0; 5379 pinScrollBy(scrollX, scrollY, true, 0); 5380 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5381 requestRectangleOnScreen(select); 5382 invalidate(); 5383 } 5384 5385 private int scaleTrackballX(float xRate, int width) { 5386 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5387 int nextXMove = xMove; 5388 if (xMove > 0) { 5389 if (xMove > mTrackballXMove) { 5390 xMove -= mTrackballXMove; 5391 } 5392 } else if (xMove < mTrackballXMove) { 5393 xMove -= mTrackballXMove; 5394 } 5395 mTrackballXMove = nextXMove; 5396 return xMove; 5397 } 5398 5399 private int scaleTrackballY(float yRate, int height) { 5400 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5401 int nextYMove = yMove; 5402 if (yMove > 0) { 5403 if (yMove > mTrackballYMove) { 5404 yMove -= mTrackballYMove; 5405 } 5406 } else if (yMove < mTrackballYMove) { 5407 yMove -= mTrackballYMove; 5408 } 5409 mTrackballYMove = nextYMove; 5410 return yMove; 5411 } 5412 5413 private int keyCodeToSoundsEffect(int keyCode) { 5414 switch(keyCode) { 5415 case KeyEvent.KEYCODE_DPAD_UP: 5416 return SoundEffectConstants.NAVIGATION_UP; 5417 case KeyEvent.KEYCODE_DPAD_RIGHT: 5418 return SoundEffectConstants.NAVIGATION_RIGHT; 5419 case KeyEvent.KEYCODE_DPAD_DOWN: 5420 return SoundEffectConstants.NAVIGATION_DOWN; 5421 case KeyEvent.KEYCODE_DPAD_LEFT: 5422 return SoundEffectConstants.NAVIGATION_LEFT; 5423 } 5424 throw new IllegalArgumentException("keyCode must be one of " + 5425 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5426 "KEYCODE_DPAD_LEFT}."); 5427 } 5428 5429 private void doTrackball(long time) { 5430 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5431 if (elapsed == 0) { 5432 elapsed = TRACKBALL_TIMEOUT; 5433 } 5434 float xRate = mTrackballRemainsX * 1000 / elapsed; 5435 float yRate = mTrackballRemainsY * 1000 / elapsed; 5436 int viewWidth = getViewWidth(); 5437 int viewHeight = getViewHeight(); 5438 if (mSelectingText) { 5439 if (!mDrawSelectionPointer) { 5440 // The last selection was made by touch, disabling drawing the 5441 // selection pointer. Allow the trackball to adjust the 5442 // position of the touch control. 5443 mSelectX = contentToViewX(nativeSelectionX()); 5444 mSelectY = contentToViewY(nativeSelectionY()); 5445 mDrawSelectionPointer = mExtendSelection = true; 5446 nativeSetExtendSelection(); 5447 } 5448 moveSelection(scaleTrackballX(xRate, viewWidth), 5449 scaleTrackballY(yRate, viewHeight)); 5450 mTrackballRemainsX = mTrackballRemainsY = 0; 5451 return; 5452 } 5453 float ax = Math.abs(xRate); 5454 float ay = Math.abs(yRate); 5455 float maxA = Math.max(ax, ay); 5456 if (DebugFlags.WEB_VIEW) { 5457 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5458 + " xRate=" + xRate 5459 + " yRate=" + yRate 5460 + " mTrackballRemainsX=" + mTrackballRemainsX 5461 + " mTrackballRemainsY=" + mTrackballRemainsY); 5462 } 5463 int width = mContentWidth - viewWidth; 5464 int height = mContentHeight - viewHeight; 5465 if (width < 0) width = 0; 5466 if (height < 0) height = 0; 5467 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5468 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5469 maxA = Math.max(ax, ay); 5470 int count = Math.max(0, (int) maxA); 5471 int oldScrollX = mScrollX; 5472 int oldScrollY = mScrollY; 5473 if (count > 0) { 5474 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5475 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5476 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5477 KeyEvent.KEYCODE_DPAD_RIGHT; 5478 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5479 if (DebugFlags.WEB_VIEW) { 5480 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5481 + " count=" + count 5482 + " mTrackballRemainsX=" + mTrackballRemainsX 5483 + " mTrackballRemainsY=" + mTrackballRemainsY); 5484 } 5485 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 5486 for (int i = 0; i < count; i++) { 5487 letPageHandleNavKey(selectKeyCode, time, true); 5488 } 5489 letPageHandleNavKey(selectKeyCode, time, false); 5490 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5491 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5492 } 5493 mTrackballRemainsX = mTrackballRemainsY = 0; 5494 } 5495 if (count >= TRACKBALL_SCROLL_COUNT) { 5496 int xMove = scaleTrackballX(xRate, width); 5497 int yMove = scaleTrackballY(yRate, height); 5498 if (DebugFlags.WEB_VIEW) { 5499 Log.v(LOGTAG, "doTrackball pinScrollBy" 5500 + " count=" + count 5501 + " xMove=" + xMove + " yMove=" + yMove 5502 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5503 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5504 ); 5505 } 5506 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5507 xMove = 0; 5508 } 5509 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5510 yMove = 0; 5511 } 5512 if (xMove != 0 || yMove != 0) { 5513 pinScrollBy(xMove, yMove, true, 0); 5514 } 5515 mUserScroll = true; 5516 } 5517 } 5518 5519 private int computeMaxScrollX() { 5520 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5521 } 5522 5523 private int computeMaxScrollY() { 5524 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5525 - getViewHeightWithTitle(), 0); 5526 } 5527 5528 boolean updateScrollCoordinates(int x, int y) { 5529 int oldX = mScrollX; 5530 int oldY = mScrollY; 5531 mScrollX = x; 5532 mScrollY = y; 5533 if (oldX != mScrollX || oldY != mScrollY) { 5534 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 5535 return true; 5536 } else { 5537 return false; 5538 } 5539 } 5540 5541 public void flingScroll(int vx, int vy) { 5542 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5543 computeMaxScrollY()); 5544 invalidate(); 5545 } 5546 5547 private void doFling() { 5548 if (mVelocityTracker == null) { 5549 return; 5550 } 5551 int maxX = computeMaxScrollX(); 5552 int maxY = computeMaxScrollY(); 5553 5554 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5555 int vx = (int) mVelocityTracker.getXVelocity(); 5556 int vy = (int) mVelocityTracker.getYVelocity(); 5557 5558 if (mSnapScrollMode != SNAP_NONE) { 5559 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5560 vy = 0; 5561 } else { 5562 vx = 0; 5563 } 5564 } 5565 if (true /* EMG release: make our fling more like Maps' */) { 5566 // maps cuts their velocity in half 5567 vx = vx * 3 / 4; 5568 vy = vy * 3 / 4; 5569 } 5570 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5571 WebViewCore.resumePriority(); 5572 WebViewCore.resumeUpdatePicture(mWebViewCore); 5573 return; 5574 } 5575 float currentVelocity = mScroller.getCurrVelocity(); 5576 float velocity = (float) Math.hypot(vx, vy); 5577 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 5578 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 5579 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5580 - Math.atan2(vy, vx))); 5581 final float circle = (float) (Math.PI) * 2.0f; 5582 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5583 vx += currentVelocity * mLastVelX / mLastVelocity; 5584 vy += currentVelocity * mLastVelY / mLastVelocity; 5585 velocity = (float) Math.hypot(vx, vy); 5586 if (DebugFlags.WEB_VIEW) { 5587 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5588 } 5589 } else if (DebugFlags.WEB_VIEW) { 5590 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5591 } 5592 } else if (DebugFlags.WEB_VIEW) { 5593 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5594 + " current=" + currentVelocity 5595 + " vx=" + vx + " vy=" + vy 5596 + " maxX=" + maxX + " maxY=" + maxY 5597 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5598 } 5599 mLastVelX = vx; 5600 mLastVelY = vy; 5601 mLastVelocity = velocity; 5602 5603 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5604 final int time = mScroller.getDuration(); 5605 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5606 awakenScrollBars(time); 5607 invalidate(); 5608 } 5609 5610 /** 5611 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5612 * in charge of installing this view to the view hierarchy. This view will 5613 * become visible when the user starts scrolling via touch and fade away if 5614 * the user does not interact with it. 5615 * <p/> 5616 * API version 3 introduces a built-in zoom mechanism that is shown 5617 * automatically by the MapView. This is the preferred approach for 5618 * showing the zoom UI. 5619 * 5620 * @deprecated The built-in zoom mechanism is preferred, see 5621 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5622 */ 5623 @Deprecated 5624 public View getZoomControls() { 5625 if (!getSettings().supportZoom()) { 5626 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5627 return null; 5628 } 5629 return mZoomManager.getExternalZoomPicker(); 5630 } 5631 5632 void dismissZoomControl() { 5633 mZoomManager.dismissZoomPicker(); 5634 } 5635 5636 float getDefaultZoomScale() { 5637 return mZoomManager.getDefaultScale(); 5638 } 5639 5640 /** 5641 * @return TRUE if the WebView can be zoomed in. 5642 */ 5643 public boolean canZoomIn() { 5644 return mZoomManager.canZoomIn(); 5645 } 5646 5647 /** 5648 * @return TRUE if the WebView can be zoomed out. 5649 */ 5650 public boolean canZoomOut() { 5651 return mZoomManager.canZoomOut(); 5652 } 5653 5654 /** 5655 * Perform zoom in in the webview 5656 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5657 */ 5658 public boolean zoomIn() { 5659 return mZoomManager.zoomIn(); 5660 } 5661 5662 /** 5663 * Perform zoom out in the webview 5664 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5665 */ 5666 public boolean zoomOut() { 5667 return mZoomManager.zoomOut(); 5668 } 5669 5670 private void updateSelection() { 5671 if (mNativeClass == 0) { 5672 return; 5673 } 5674 // mLastTouchX and mLastTouchY are the point in the current viewport 5675 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5676 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5677 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5678 contentX + mNavSlop, contentY + mNavSlop); 5679 nativeSelectBestAt(rect); 5680 } 5681 5682 /** 5683 * Scroll the focused text field/area to match the WebTextView 5684 * @param xPercent New x position of the WebTextView from 0 to 1. 5685 * @param y New y position of the WebTextView in view coordinates 5686 */ 5687 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5688 if (!inEditingMode() || mWebViewCore == null) { 5689 return; 5690 } 5691 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5692 // Since this position is relative to the top of the text input 5693 // field, we do not need to take the title bar's height into 5694 // consideration. 5695 viewToContentDimension(y), 5696 new Float(xPercent)); 5697 } 5698 5699 /** 5700 * Set our starting point and time for a drag from the WebTextView. 5701 */ 5702 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5703 if (!inEditingMode()) { 5704 return; 5705 } 5706 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5707 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5708 mLastTouchTime = eventTime; 5709 if (!mScroller.isFinished()) { 5710 abortAnimation(); 5711 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5712 } 5713 mSnapScrollMode = SNAP_NONE; 5714 mVelocityTracker = VelocityTracker.obtain(); 5715 mTouchMode = TOUCH_DRAG_START_MODE; 5716 } 5717 5718 /** 5719 * Given a motion event from the WebTextView, set its location to our 5720 * coordinates, and handle the event. 5721 */ 5722 /*package*/ boolean textFieldDrag(MotionEvent event) { 5723 if (!inEditingMode()) { 5724 return false; 5725 } 5726 mDragFromTextInput = true; 5727 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5728 (float) (mWebTextView.getTop() - mScrollY)); 5729 boolean result = onTouchEvent(event); 5730 mDragFromTextInput = false; 5731 return result; 5732 } 5733 5734 /** 5735 * Due a touch up from a WebTextView. This will be handled by webkit to 5736 * change the selection. 5737 * @param event MotionEvent in the WebTextView's coordinates. 5738 */ 5739 /*package*/ void touchUpOnTextField(MotionEvent event) { 5740 if (!inEditingMode()) { 5741 return; 5742 } 5743 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5744 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5745 nativeMotionUp(x, y, mNavSlop); 5746 } 5747 5748 /** 5749 * Called when pressing the center key or trackball on a textfield. 5750 */ 5751 /*package*/ void centerKeyPressOnTextField() { 5752 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5753 nativeCursorNodePointer()); 5754 } 5755 5756 private void doShortPress() { 5757 if (mNativeClass == 0) { 5758 return; 5759 } 5760 if (mPreventDefault == PREVENT_DEFAULT_YES) { 5761 return; 5762 } 5763 mTouchMode = TOUCH_DONE_MODE; 5764 switchOutDrawHistory(); 5765 // mLastTouchX and mLastTouchY are the point in the current viewport 5766 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5767 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5768 if (getSettings().supportTouchOnly()) { 5769 removeTouchHighlight(false); 5770 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5771 // use "0" as generation id to inform WebKit to use the same x/y as 5772 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 5773 touchUpData.mMoveGeneration = 0; 5774 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5775 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5776 WebViewCore.MotionUpData motionUpData = new WebViewCore 5777 .MotionUpData(); 5778 motionUpData.mFrame = nativeCacheHitFramePointer(); 5779 motionUpData.mNode = nativeCacheHitNodePointer(); 5780 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5781 motionUpData.mX = contentX; 5782 motionUpData.mY = contentY; 5783 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5784 motionUpData); 5785 } else { 5786 doMotionUp(contentX, contentY); 5787 } 5788 } 5789 5790 private void doMotionUp(int contentX, int contentY) { 5791 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5792 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5793 } 5794 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5795 playSoundEffect(SoundEffectConstants.CLICK); 5796 } 5797 } 5798 5799 /* 5800 * Return true if the view (Plugin) is fully visible and maximized inside 5801 * the WebView. 5802 */ 5803 boolean isPluginFitOnScreen(ViewManager.ChildView view) { 5804 final int viewWidth = getViewWidth(); 5805 final int viewHeight = getViewHeightWithTitle(); 5806 float scale = Math.min((float) viewWidth / view.width, (float) viewHeight / view.height); 5807 scale = mZoomManager.computeScaleWithLimits(scale); 5808 return !mZoomManager.willScaleTriggerZoom(scale) 5809 && contentToViewX(view.x) >= mScrollX 5810 && contentToViewX(view.x + view.width) <= mScrollX + viewWidth 5811 && contentToViewY(view.y) >= mScrollY 5812 && contentToViewY(view.y + view.height) <= mScrollY + viewHeight; 5813 } 5814 5815 /* 5816 * Maximize and center the rectangle, specified in the document coordinate 5817 * space, inside the WebView. If the zoom doesn't need to be changed, do an 5818 * animated scroll to center it. If the zoom needs to be changed, find the 5819 * zoom center and do a smooth zoom transition. 5820 */ 5821 void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 5822 int viewWidth = getViewWidth(); 5823 int viewHeight = getViewHeightWithTitle(); 5824 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 5825 / docHeight); 5826 scale = mZoomManager.computeScaleWithLimits(scale); 5827 if (!mZoomManager.willScaleTriggerZoom(scale)) { 5828 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 5829 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 5830 true, 0); 5831 } else { 5832 float actualScale = mZoomManager.getScale(); 5833 float oldScreenX = docX * actualScale - mScrollX; 5834 float rectViewX = docX * scale; 5835 float rectViewWidth = docWidth * scale; 5836 float newMaxWidth = mContentWidth * scale; 5837 float newScreenX = (viewWidth - rectViewWidth) / 2; 5838 // pin the newX to the WebView 5839 if (newScreenX > rectViewX) { 5840 newScreenX = rectViewX; 5841 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 5842 newScreenX = viewWidth - (newMaxWidth - rectViewX); 5843 } 5844 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 5845 / (scale - actualScale); 5846 float oldScreenY = docY * actualScale + getTitleHeight() 5847 - mScrollY; 5848 float rectViewY = docY * scale + getTitleHeight(); 5849 float rectViewHeight = docHeight * scale; 5850 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 5851 float newScreenY = (viewHeight - rectViewHeight) / 2; 5852 // pin the newY to the WebView 5853 if (newScreenY > rectViewY) { 5854 newScreenY = rectViewY; 5855 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 5856 newScreenY = viewHeight - (newMaxHeight - rectViewY); 5857 } 5858 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 5859 / (scale - actualScale); 5860 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 5861 mZoomManager.startZoomAnimation(scale, false); 5862 } 5863 } 5864 5865 // Called by JNI to handle a touch on a node representing an email address, 5866 // address, or phone number 5867 private void overrideLoading(String url) { 5868 mCallbackProxy.uiOverrideUrlLoading(url); 5869 } 5870 5871 @Override 5872 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5873 // FIXME: If a subwindow is showing find, and the user touches the 5874 // background window, it can steal focus. 5875 if (mFindIsUp) return false; 5876 boolean result = false; 5877 if (inEditingMode()) { 5878 result = mWebTextView.requestFocus(direction, 5879 previouslyFocusedRect); 5880 } else { 5881 result = super.requestFocus(direction, previouslyFocusedRect); 5882 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5883 // For cases such as GMail, where we gain focus from a direction, 5884 // we want to move to the first available link. 5885 // FIXME: If there are no visible links, we may not want to 5886 int fakeKeyDirection = 0; 5887 switch(direction) { 5888 case View.FOCUS_UP: 5889 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5890 break; 5891 case View.FOCUS_DOWN: 5892 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5893 break; 5894 case View.FOCUS_LEFT: 5895 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5896 break; 5897 case View.FOCUS_RIGHT: 5898 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5899 break; 5900 default: 5901 return result; 5902 } 5903 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5904 navHandledKey(fakeKeyDirection, 1, true, 0); 5905 } 5906 } 5907 } 5908 return result; 5909 } 5910 5911 @Override 5912 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5913 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5914 5915 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5916 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5917 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5918 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5919 5920 int measuredHeight = heightSize; 5921 int measuredWidth = widthSize; 5922 5923 // Grab the content size from WebViewCore. 5924 int contentHeight = contentToViewDimension(mContentHeight); 5925 int contentWidth = contentToViewDimension(mContentWidth); 5926 5927// Log.d(LOGTAG, "------- measure " + heightMode); 5928 5929 if (heightMode != MeasureSpec.EXACTLY) { 5930 mHeightCanMeasure = true; 5931 measuredHeight = contentHeight; 5932 if (heightMode == MeasureSpec.AT_MOST) { 5933 // If we are larger than the AT_MOST height, then our height can 5934 // no longer be measured and we should scroll internally. 5935 if (measuredHeight > heightSize) { 5936 measuredHeight = heightSize; 5937 mHeightCanMeasure = false; 5938 } 5939 } 5940 } else { 5941 mHeightCanMeasure = false; 5942 } 5943 if (mNativeClass != 0) { 5944 nativeSetHeightCanMeasure(mHeightCanMeasure); 5945 } 5946 // For the width, always use the given size unless unspecified. 5947 if (widthMode == MeasureSpec.UNSPECIFIED) { 5948 mWidthCanMeasure = true; 5949 measuredWidth = contentWidth; 5950 } else { 5951 mWidthCanMeasure = false; 5952 } 5953 5954 synchronized (this) { 5955 setMeasuredDimension(measuredWidth, measuredHeight); 5956 } 5957 } 5958 5959 @Override 5960 public boolean requestChildRectangleOnScreen(View child, 5961 Rect rect, 5962 boolean immediate) { 5963 // don't scroll while in zoom animation. When it is done, we will adjust 5964 // the necessary components (e.g., WebTextView if it is in editing mode) 5965 if (mZoomManager.isFixedLengthAnimationInProgress()) { 5966 return false; 5967 } 5968 5969 rect.offset(child.getLeft() - child.getScrollX(), 5970 child.getTop() - child.getScrollY()); 5971 5972 Rect content = new Rect(viewToContentX(mScrollX), 5973 viewToContentY(mScrollY), 5974 viewToContentX(mScrollX + getWidth() 5975 - getVerticalScrollbarWidth()), 5976 viewToContentY(mScrollY + getViewHeightWithTitle())); 5977 content = nativeSubtractLayers(content); 5978 int screenTop = contentToViewY(content.top); 5979 int screenBottom = contentToViewY(content.bottom); 5980 int height = screenBottom - screenTop; 5981 int scrollYDelta = 0; 5982 5983 if (rect.bottom > screenBottom) { 5984 int oneThirdOfScreenHeight = height / 3; 5985 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5986 // If the rectangle is too tall to fit in the bottom two thirds 5987 // of the screen, place it at the top. 5988 scrollYDelta = rect.top - screenTop; 5989 } else { 5990 // If the rectangle will still fit on screen, we want its 5991 // top to be in the top third of the screen. 5992 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5993 } 5994 } else if (rect.top < screenTop) { 5995 scrollYDelta = rect.top - screenTop; 5996 } 5997 5998 int screenLeft = contentToViewX(content.left); 5999 int screenRight = contentToViewX(content.right); 6000 int width = screenRight - screenLeft; 6001 int scrollXDelta = 0; 6002 6003 if (rect.right > screenRight && rect.left > screenLeft) { 6004 if (rect.width() > width) { 6005 scrollXDelta += (rect.left - screenLeft); 6006 } else { 6007 scrollXDelta += (rect.right - screenRight); 6008 } 6009 } else if (rect.left < screenLeft) { 6010 scrollXDelta -= (screenLeft - rect.left); 6011 } 6012 6013 if ((scrollYDelta | scrollXDelta) != 0) { 6014 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6015 } 6016 6017 return false; 6018 } 6019 6020 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6021 String replace, int newStart, int newEnd) { 6022 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6023 arg.mReplace = replace; 6024 arg.mNewStart = newStart; 6025 arg.mNewEnd = newEnd; 6026 mTextGeneration++; 6027 arg.mTextGeneration = mTextGeneration; 6028 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6029 } 6030 6031 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6032 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6033 arg.mEvent = event; 6034 arg.mCurrentText = currentText; 6035 // Increase our text generation number, and pass it to webcore thread 6036 mTextGeneration++; 6037 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6038 // WebKit's document state is not saved until about to leave the page. 6039 // To make sure the host application, like Browser, has the up to date 6040 // document state when it goes to background, we force to save the 6041 // document state. 6042 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6043 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6044 cursorData(), 1000); 6045 } 6046 6047 /* package */ synchronized WebViewCore getWebViewCore() { 6048 return mWebViewCore; 6049 } 6050 6051 //------------------------------------------------------------------------- 6052 // Methods can be called from a separate thread, like WebViewCore 6053 // If it needs to call the View system, it has to send message. 6054 //------------------------------------------------------------------------- 6055 6056 /** 6057 * General handler to receive message coming from webkit thread 6058 */ 6059 class PrivateHandler extends Handler { 6060 @Override 6061 public void handleMessage(Message msg) { 6062 // exclude INVAL_RECT_MSG_ID since it is frequently output 6063 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6064 if (msg.what >= FIRST_PRIVATE_MSG_ID 6065 && msg.what <= LAST_PRIVATE_MSG_ID) { 6066 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6067 - FIRST_PRIVATE_MSG_ID]); 6068 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6069 && msg.what <= LAST_PACKAGE_MSG_ID) { 6070 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6071 - FIRST_PACKAGE_MSG_ID]); 6072 } else { 6073 Log.v(LOGTAG, Integer.toString(msg.what)); 6074 } 6075 } 6076 if (mWebViewCore == null) { 6077 // after WebView's destroy() is called, skip handling messages. 6078 return; 6079 } 6080 switch (msg.what) { 6081 case REMEMBER_PASSWORD: { 6082 mDatabase.setUsernamePassword( 6083 msg.getData().getString("host"), 6084 msg.getData().getString("username"), 6085 msg.getData().getString("password")); 6086 ((Message) msg.obj).sendToTarget(); 6087 break; 6088 } 6089 case NEVER_REMEMBER_PASSWORD: { 6090 mDatabase.setUsernamePassword( 6091 msg.getData().getString("host"), null, null); 6092 ((Message) msg.obj).sendToTarget(); 6093 break; 6094 } 6095 case PREVENT_DEFAULT_TIMEOUT: { 6096 // if timeout happens, cancel it so that it won't block UI 6097 // to continue handling touch events 6098 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6099 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6100 || (msg.arg1 == MotionEvent.ACTION_MOVE 6101 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6102 cancelWebCoreTouchEvent( 6103 viewToContentX((int) mLastTouchX + mScrollX), 6104 viewToContentY((int) mLastTouchY + mScrollY), 6105 true); 6106 } 6107 break; 6108 } 6109 case SWITCH_TO_SHORTPRESS: { 6110 if (mTouchMode == TOUCH_INIT_MODE) { 6111 if (!getSettings().supportTouchOnly() 6112 && mPreventDefault != PREVENT_DEFAULT_YES) { 6113 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6114 updateSelection(); 6115 } else { 6116 // set to TOUCH_SHORTPRESS_MODE so that it won't 6117 // trigger double tap any more 6118 mTouchMode = TOUCH_SHORTPRESS_MODE; 6119 } 6120 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6121 mTouchMode = TOUCH_DONE_MODE; 6122 } 6123 break; 6124 } 6125 case SWITCH_TO_LONGPRESS: { 6126 if (getSettings().supportTouchOnly()) { 6127 removeTouchHighlight(false); 6128 } 6129 if (inFullScreenMode() || mDeferTouchProcess) { 6130 TouchEventData ted = new TouchEventData(); 6131 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6132 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6133 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6134 // metaState for long press is tricky. Should it be the 6135 // state when the press started or when the press was 6136 // released? Or some intermediary key state? For 6137 // simplicity for now, we don't set it. 6138 ted.mMetaState = 0; 6139 ted.mReprocess = mDeferTouchProcess; 6140 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6141 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6142 mTouchMode = TOUCH_DONE_MODE; 6143 performLongClick(); 6144 } 6145 break; 6146 } 6147 case RELEASE_SINGLE_TAP: { 6148 doShortPress(); 6149 break; 6150 } 6151 case SCROLL_BY_MSG_ID: 6152 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6153 break; 6154 case SYNC_SCROLL_TO_MSG_ID: 6155 if (mUserScroll) { 6156 // if user has scrolled explicitly, don't sync the 6157 // scroll position any more 6158 mUserScroll = false; 6159 break; 6160 } 6161 // fall through 6162 case SCROLL_TO_MSG_ID: 6163 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6164 // if we can't scroll to the exact position due to pin, 6165 // send a message to WebCore to re-scroll when we get a 6166 // new picture 6167 mUserScroll = false; 6168 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6169 msg.arg1, msg.arg2); 6170 } 6171 break; 6172 case SPAWN_SCROLL_TO_MSG_ID: 6173 spawnContentScrollTo(msg.arg1, msg.arg2); 6174 break; 6175 case UPDATE_ZOOM_RANGE: { 6176 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 6177 // mScrollX contains the new minPrefWidth 6178 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 6179 break; 6180 } 6181 case REPLACE_BASE_CONTENT: { 6182 nativeReplaceBaseContent(msg.arg1); 6183 break; 6184 } 6185 case NEW_PICTURE_MSG_ID: { 6186 // called for new content 6187 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 6188 nativeSetBaseLayer(draw.mBaseLayer); 6189 final Point viewSize = draw.mViewPoint; 6190 WebViewCore.ViewState viewState = draw.mViewState; 6191 boolean isPictureAfterFirstLayout = viewState != null; 6192 if (isPictureAfterFirstLayout) { 6193 // Reset the last sent data here since dealing with new page. 6194 mLastWidthSent = 0; 6195 mZoomManager.onFirstLayout(draw); 6196 if (!mDrawHistory) { 6197 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 6198 // As we are on a new page, remove the WebTextView. This 6199 // is necessary for page loads driven by webkit, and in 6200 // particular when the user was on a password field, so 6201 // the WebTextView was visible. 6202 clearTextEntry(false); 6203 } 6204 } 6205 6206 // We update the layout (i.e. request a layout from the 6207 // view system) if the last view size that we sent to 6208 // WebCore matches the view size of the picture we just 6209 // received in the fixed dimension. 6210 final boolean updateLayout = viewSize.x == mLastWidthSent 6211 && viewSize.y == mLastHeightSent; 6212 recordNewContentSize(draw.mWidthHeight.x, 6213 draw.mWidthHeight.y, updateLayout); 6214 if (DebugFlags.WEB_VIEW) { 6215 Rect b = draw.mInvalRegion.getBounds(); 6216 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6217 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6218 } 6219 invalidateContentRect(draw.mInvalRegion.getBounds()); 6220 6221 if (mPictureListener != null) { 6222 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6223 } 6224 6225 // update the zoom information based on the new picture 6226 mZoomManager.onNewPicture(draw); 6227 6228 if (draw.mFocusSizeChanged && inEditingMode()) { 6229 mFocusSizeChanged = true; 6230 } 6231 if (isPictureAfterFirstLayout) { 6232 mViewManager.postReadyToDrawAll(); 6233 } 6234 break; 6235 } 6236 case WEBCORE_INITIALIZED_MSG_ID: 6237 // nativeCreate sets mNativeClass to a non-zero value 6238 nativeCreate(msg.arg1); 6239 break; 6240 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6241 // Make sure that the textfield is currently focused 6242 // and representing the same node as the pointer. 6243 if (inEditingMode() && 6244 mWebTextView.isSameTextField(msg.arg1)) { 6245 if (msg.getData().getBoolean("password")) { 6246 Spannable text = (Spannable) mWebTextView.getText(); 6247 int start = Selection.getSelectionStart(text); 6248 int end = Selection.getSelectionEnd(text); 6249 mWebTextView.setInPassword(true); 6250 // Restore the selection, which may have been 6251 // ruined by setInPassword. 6252 Spannable pword = 6253 (Spannable) mWebTextView.getText(); 6254 Selection.setSelection(pword, start, end); 6255 // If the text entry has created more events, ignore 6256 // this one. 6257 } else if (msg.arg2 == mTextGeneration) { 6258 mWebTextView.setTextAndKeepSelection( 6259 (String) msg.obj); 6260 } 6261 } 6262 break; 6263 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6264 displaySoftKeyboard(true); 6265 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 6266 case UPDATE_TEXT_SELECTION_MSG_ID: 6267 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6268 (WebViewCore.TextSelectionData) msg.obj); 6269 break; 6270 case RETURN_LABEL: 6271 if (inEditingMode() 6272 && mWebTextView.isSameTextField(msg.arg1)) { 6273 mWebTextView.setHint((String) msg.obj); 6274 InputMethodManager imm 6275 = InputMethodManager.peekInstance(); 6276 // The hint is propagated to the IME in 6277 // onCreateInputConnection. If the IME is already 6278 // active, restart it so that its hint text is updated. 6279 if (imm != null && imm.isActive(mWebTextView)) { 6280 imm.restartInput(mWebTextView); 6281 } 6282 } 6283 break; 6284 case UNHANDLED_NAV_KEY: 6285 navHandledKey(msg.arg1, 1, false, 0); 6286 break; 6287 case UPDATE_TEXT_ENTRY_MSG_ID: 6288 // this is sent after finishing resize in WebViewCore. Make 6289 // sure the text edit box is still on the screen. 6290 if (inEditingMode() && nativeCursorIsTextInput()) { 6291 mWebTextView.bringIntoView(); 6292 rebuildWebTextView(); 6293 } 6294 break; 6295 case CLEAR_TEXT_ENTRY: 6296 clearTextEntry(false); 6297 break; 6298 case INVAL_RECT_MSG_ID: { 6299 Rect r = (Rect)msg.obj; 6300 if (r == null) { 6301 invalidate(); 6302 } else { 6303 // we need to scale r from content into view coords, 6304 // which viewInvalidate() does for us 6305 viewInvalidate(r.left, r.top, r.right, r.bottom); 6306 } 6307 break; 6308 } 6309 case REQUEST_FORM_DATA: 6310 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6311 if (mWebTextView.isSameTextField(msg.arg1)) { 6312 mWebTextView.setAdapterCustom(adapter); 6313 } 6314 break; 6315 case RESUME_WEBCORE_PRIORITY: 6316 WebViewCore.resumePriority(); 6317 WebViewCore.resumeUpdatePicture(mWebViewCore); 6318 break; 6319 6320 case LONG_PRESS_CENTER: 6321 // as this is shared by keydown and trackballdown, reset all 6322 // the states 6323 mGotCenterDown = false; 6324 mTrackballDown = false; 6325 performLongClick(); 6326 break; 6327 6328 case WEBCORE_NEED_TOUCH_EVENTS: 6329 mForwardTouchEvents = (msg.arg1 != 0); 6330 break; 6331 6332 case PREVENT_TOUCH_ID: 6333 if (inFullScreenMode()) { 6334 break; 6335 } 6336 if (msg.obj == null) { 6337 if (msg.arg1 == MotionEvent.ACTION_DOWN 6338 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6339 // if prevent default is called from WebCore, UI 6340 // will not handle the rest of the touch events any 6341 // more. 6342 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6343 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6344 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6345 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6346 // the return for the first ACTION_MOVE will decide 6347 // whether UI will handle touch or not. Currently no 6348 // support for alternating prevent default 6349 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6350 : PREVENT_DEFAULT_NO; 6351 } 6352 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6353 mTouchHighlightRegion.setEmpty(); 6354 } 6355 } else if (msg.arg2 == 0) { 6356 // prevent default is not called in WebCore, so the 6357 // message needs to be reprocessed in UI 6358 TouchEventData ted = (TouchEventData) msg.obj; 6359 switch (ted.mAction) { 6360 case MotionEvent.ACTION_DOWN: 6361 mLastDeferTouchX = contentToViewX(ted.mX) 6362 - mScrollX; 6363 mLastDeferTouchY = contentToViewY(ted.mY) 6364 - mScrollY; 6365 mDeferTouchMode = TOUCH_INIT_MODE; 6366 break; 6367 case MotionEvent.ACTION_MOVE: { 6368 // no snapping in defer process 6369 int x = contentToViewX(ted.mX) - mScrollX; 6370 int y = contentToViewY(ted.mY) - mScrollY; 6371 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6372 mDeferTouchMode = TOUCH_DRAG_MODE; 6373 mLastDeferTouchX = x; 6374 mLastDeferTouchY = y; 6375 startDrag(); 6376 } 6377 int deltaX = pinLocX((int) (mScrollX 6378 + mLastDeferTouchX - x)) 6379 - mScrollX; 6380 int deltaY = pinLocY((int) (mScrollY 6381 + mLastDeferTouchY - y)) 6382 - mScrollY; 6383 doDrag(deltaX, deltaY); 6384 if (deltaX != 0) mLastDeferTouchX = x; 6385 if (deltaY != 0) mLastDeferTouchY = y; 6386 break; 6387 } 6388 case MotionEvent.ACTION_UP: 6389 case MotionEvent.ACTION_CANCEL: 6390 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6391 // no fling in defer process 6392 WebViewCore.resumePriority(); 6393 WebViewCore.resumeUpdatePicture(mWebViewCore); 6394 } 6395 mDeferTouchMode = TOUCH_DONE_MODE; 6396 break; 6397 case WebViewCore.ACTION_DOUBLETAP: 6398 // doDoubleTap() needs mLastTouchX/Y as anchor 6399 mLastTouchX = contentToViewX(ted.mX) - mScrollX; 6400 mLastTouchY = contentToViewY(ted.mY) - mScrollY; 6401 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6402 mDeferTouchMode = TOUCH_DONE_MODE; 6403 break; 6404 case WebViewCore.ACTION_LONGPRESS: 6405 HitTestResult hitTest = getHitTestResult(); 6406 if (hitTest != null && hitTest.mType 6407 != HitTestResult.UNKNOWN_TYPE) { 6408 performLongClick(); 6409 } 6410 mDeferTouchMode = TOUCH_DONE_MODE; 6411 break; 6412 } 6413 } 6414 break; 6415 6416 case REQUEST_KEYBOARD: 6417 if (msg.arg1 == 0) { 6418 hideSoftKeyboard(); 6419 } else { 6420 displaySoftKeyboard(false); 6421 } 6422 break; 6423 6424 case FIND_AGAIN: 6425 // Ignore if find has been dismissed. 6426 if (mFindIsUp) { 6427 findAll(mLastFind); 6428 } 6429 break; 6430 6431 case DRAG_HELD_MOTIONLESS: 6432 mHeldMotionless = MOTIONLESS_TRUE; 6433 invalidate(); 6434 // fall through to keep scrollbars awake 6435 6436 case AWAKEN_SCROLL_BARS: 6437 if (mTouchMode == TOUCH_DRAG_MODE 6438 && mHeldMotionless == MOTIONLESS_TRUE) { 6439 awakenScrollBars(ViewConfiguration 6440 .getScrollDefaultDelay(), false); 6441 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6442 .obtainMessage(AWAKEN_SCROLL_BARS), 6443 ViewConfiguration.getScrollDefaultDelay()); 6444 } 6445 break; 6446 6447 case DO_MOTION_UP: 6448 doMotionUp(msg.arg1, msg.arg2); 6449 break; 6450 6451 case SHOW_FULLSCREEN: { 6452 View view = (View) msg.obj; 6453 int npp = msg.arg1; 6454 6455 if (mFullScreenHolder != null) { 6456 Log.w(LOGTAG, "Should not have another full screen."); 6457 mFullScreenHolder.dismiss(); 6458 } 6459 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 6460 mFullScreenHolder.setContentView(view); 6461 mFullScreenHolder.setCancelable(false); 6462 mFullScreenHolder.setCanceledOnTouchOutside(false); 6463 mFullScreenHolder.show(); 6464 6465 break; 6466 } 6467 case HIDE_FULLSCREEN: 6468 if (inFullScreenMode()) { 6469 mFullScreenHolder.dismiss(); 6470 mFullScreenHolder = null; 6471 } 6472 break; 6473 6474 case DOM_FOCUS_CHANGED: 6475 if (inEditingMode()) { 6476 nativeClearCursor(); 6477 rebuildWebTextView(); 6478 } 6479 break; 6480 6481 case SHOW_RECT_MSG_ID: { 6482 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6483 int x = mScrollX; 6484 int left = contentToViewX(data.mLeft); 6485 int width = contentToViewDimension(data.mWidth); 6486 int maxWidth = contentToViewDimension(data.mContentWidth); 6487 int viewWidth = getViewWidth(); 6488 if (width < viewWidth) { 6489 // center align 6490 x += left + width / 2 - mScrollX - viewWidth / 2; 6491 } else { 6492 x += (int) (left + data.mXPercentInDoc * width 6493 - mScrollX - data.mXPercentInView * viewWidth); 6494 } 6495 if (DebugFlags.WEB_VIEW) { 6496 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6497 width + ",maxWidth=" + maxWidth + 6498 ",viewWidth=" + viewWidth + ",x=" 6499 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6500 ",xPercentInView=" + data.mXPercentInView+ ")"); 6501 } 6502 // use the passing content width to cap x as the current 6503 // mContentWidth may not be updated yet 6504 x = Math.max(0, 6505 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6506 int top = contentToViewY(data.mTop); 6507 int height = contentToViewDimension(data.mHeight); 6508 int maxHeight = contentToViewDimension(data.mContentHeight); 6509 int viewHeight = getViewHeight(); 6510 int y = (int) (top + data.mYPercentInDoc * height - 6511 data.mYPercentInView * viewHeight); 6512 if (DebugFlags.WEB_VIEW) { 6513 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6514 height + ",maxHeight=" + maxHeight + 6515 ",viewHeight=" + viewHeight + ",y=" 6516 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6517 ",yPercentInView=" + data.mYPercentInView+ ")"); 6518 } 6519 // use the passing content height to cap y as the current 6520 // mContentHeight may not be updated yet 6521 y = Math.max(0, 6522 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6523 // We need to take into account the visible title height 6524 // when scrolling since y is an absolute view position. 6525 y = Math.max(0, y - getVisibleTitleHeight()); 6526 scrollTo(x, y); 6527 } 6528 break; 6529 6530 case CENTER_FIT_RECT: 6531 Rect r = (Rect)msg.obj; 6532 centerFitRect(r.left, r.top, r.width(), r.height()); 6533 break; 6534 6535 case SET_SCROLLBAR_MODES: 6536 mHorizontalScrollBarMode = msg.arg1; 6537 mVerticalScrollBarMode = msg.arg2; 6538 break; 6539 6540 case SELECTION_STRING_CHANGED: 6541 if (mAccessibilityInjector != null) { 6542 String selectionString = (String) msg.obj; 6543 mAccessibilityInjector.onSelectionStringChange(selectionString); 6544 } 6545 break; 6546 6547 case SET_TOUCH_HIGHLIGHT_RECTS: 6548 invalidate(mTouchHighlightRegion.getBounds()); 6549 mTouchHighlightRegion.setEmpty(); 6550 if (msg.obj != null) { 6551 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 6552 for (Rect rect : rects) { 6553 Rect viewRect = contentToViewRect(rect); 6554 // some sites, like stories in nytimes.com, set 6555 // mouse event handler in the top div. It is not 6556 // user friendly to highlight the div if it covers 6557 // more than half of the screen. 6558 if (viewRect.width() < getWidth() >> 1 6559 || viewRect.height() < getHeight() >> 1) { 6560 mTouchHighlightRegion.union(viewRect); 6561 invalidate(viewRect); 6562 } else { 6563 Log.w(LOGTAG, "Skip the huge selection rect:" 6564 + viewRect); 6565 } 6566 } 6567 } 6568 break; 6569 6570 case SAVE_WEBARCHIVE_FINISHED: 6571 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 6572 if (saveMessage.mCallback != null) { 6573 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 6574 } 6575 break; 6576 6577 default: 6578 super.handleMessage(msg); 6579 break; 6580 } 6581 } 6582 } 6583 6584 /** 6585 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 6586 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 6587 */ 6588 private void updateTextSelectionFromMessage(int nodePointer, 6589 int textGeneration, WebViewCore.TextSelectionData data) { 6590 if (inEditingMode() 6591 && mWebTextView.isSameTextField(nodePointer) 6592 && textGeneration == mTextGeneration) { 6593 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 6594 } 6595 } 6596 6597 // Class used to use a dropdown for a <select> element 6598 private class InvokeListBox implements Runnable { 6599 // Whether the listbox allows multiple selection. 6600 private boolean mMultiple; 6601 // Passed in to a list with multiple selection to tell 6602 // which items are selected. 6603 private int[] mSelectedArray; 6604 // Passed in to a list with single selection to tell 6605 // where the initial selection is. 6606 private int mSelection; 6607 6608 private Container[] mContainers; 6609 6610 // Need these to provide stable ids to my ArrayAdapter, 6611 // which normally does not have stable ids. (Bug 1250098) 6612 private class Container extends Object { 6613 /** 6614 * Possible values for mEnabled. Keep in sync with OptionStatus in 6615 * WebViewCore.cpp 6616 */ 6617 final static int OPTGROUP = -1; 6618 final static int OPTION_DISABLED = 0; 6619 final static int OPTION_ENABLED = 1; 6620 6621 String mString; 6622 int mEnabled; 6623 int mId; 6624 6625 public String toString() { 6626 return mString; 6627 } 6628 } 6629 6630 /** 6631 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6632 * and allow filtering. 6633 */ 6634 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6635 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6636 super(context, 6637 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6638 com.android.internal.R.layout.select_dialog_singlechoice, 6639 objects); 6640 } 6641 6642 @Override 6643 public View getView(int position, View convertView, 6644 ViewGroup parent) { 6645 // Always pass in null so that we will get a new CheckedTextView 6646 // Otherwise, an item which was previously used as an <optgroup> 6647 // element (i.e. has no check), could get used as an <option> 6648 // element, which needs a checkbox/radio, but it would not have 6649 // one. 6650 convertView = super.getView(position, null, parent); 6651 Container c = item(position); 6652 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6653 // ListView does not draw dividers between disabled and 6654 // enabled elements. Use a LinearLayout to provide dividers 6655 LinearLayout layout = new LinearLayout(mContext); 6656 layout.setOrientation(LinearLayout.VERTICAL); 6657 if (position > 0) { 6658 View dividerTop = new View(mContext); 6659 dividerTop.setBackgroundResource( 6660 android.R.drawable.divider_horizontal_bright); 6661 layout.addView(dividerTop); 6662 } 6663 6664 if (Container.OPTGROUP == c.mEnabled) { 6665 // Currently select_dialog_multichoice and 6666 // select_dialog_singlechoice are CheckedTextViews. If 6667 // that changes, the class cast will no longer be valid. 6668 Assert.assertTrue( 6669 convertView instanceof CheckedTextView); 6670 ((CheckedTextView) convertView).setCheckMarkDrawable( 6671 null); 6672 } else { 6673 // c.mEnabled == Container.OPTION_DISABLED 6674 // Draw the disabled element in a disabled state. 6675 convertView.setEnabled(false); 6676 } 6677 6678 layout.addView(convertView); 6679 if (position < getCount() - 1) { 6680 View dividerBottom = new View(mContext); 6681 dividerBottom.setBackgroundResource( 6682 android.R.drawable.divider_horizontal_bright); 6683 layout.addView(dividerBottom); 6684 } 6685 return layout; 6686 } 6687 return convertView; 6688 } 6689 6690 @Override 6691 public boolean hasStableIds() { 6692 // AdapterView's onChanged method uses this to determine whether 6693 // to restore the old state. Return false so that the old (out 6694 // of date) state does not replace the new, valid state. 6695 return false; 6696 } 6697 6698 private Container item(int position) { 6699 if (position < 0 || position >= getCount()) { 6700 return null; 6701 } 6702 return (Container) getItem(position); 6703 } 6704 6705 @Override 6706 public long getItemId(int position) { 6707 Container item = item(position); 6708 if (item == null) { 6709 return -1; 6710 } 6711 return item.mId; 6712 } 6713 6714 @Override 6715 public boolean areAllItemsEnabled() { 6716 return false; 6717 } 6718 6719 @Override 6720 public boolean isEnabled(int position) { 6721 Container item = item(position); 6722 if (item == null) { 6723 return false; 6724 } 6725 return Container.OPTION_ENABLED == item.mEnabled; 6726 } 6727 } 6728 6729 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6730 mMultiple = true; 6731 mSelectedArray = selected; 6732 6733 int length = array.length; 6734 mContainers = new Container[length]; 6735 for (int i = 0; i < length; i++) { 6736 mContainers[i] = new Container(); 6737 mContainers[i].mString = array[i]; 6738 mContainers[i].mEnabled = enabled[i]; 6739 mContainers[i].mId = i; 6740 } 6741 } 6742 6743 private InvokeListBox(String[] array, int[] enabled, int selection) { 6744 mSelection = selection; 6745 mMultiple = false; 6746 6747 int length = array.length; 6748 mContainers = new Container[length]; 6749 for (int i = 0; i < length; i++) { 6750 mContainers[i] = new Container(); 6751 mContainers[i].mString = array[i]; 6752 mContainers[i].mEnabled = enabled[i]; 6753 mContainers[i].mId = i; 6754 } 6755 } 6756 6757 /* 6758 * Whenever the data set changes due to filtering, this class ensures 6759 * that the checked item remains checked. 6760 */ 6761 private class SingleDataSetObserver extends DataSetObserver { 6762 private long mCheckedId; 6763 private ListView mListView; 6764 private Adapter mAdapter; 6765 6766 /* 6767 * Create a new observer. 6768 * @param id The ID of the item to keep checked. 6769 * @param l ListView for getting and clearing the checked states 6770 * @param a Adapter for getting the IDs 6771 */ 6772 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6773 mCheckedId = id; 6774 mListView = l; 6775 mAdapter = a; 6776 } 6777 6778 public void onChanged() { 6779 // The filter may have changed which item is checked. Find the 6780 // item that the ListView thinks is checked. 6781 int position = mListView.getCheckedItemPosition(); 6782 long id = mAdapter.getItemId(position); 6783 if (mCheckedId != id) { 6784 // Clear the ListView's idea of the checked item, since 6785 // it is incorrect 6786 mListView.clearChoices(); 6787 // Search for mCheckedId. If it is in the filtered list, 6788 // mark it as checked 6789 int count = mAdapter.getCount(); 6790 for (int i = 0; i < count; i++) { 6791 if (mAdapter.getItemId(i) == mCheckedId) { 6792 mListView.setItemChecked(i, true); 6793 break; 6794 } 6795 } 6796 } 6797 } 6798 6799 public void onInvalidate() {} 6800 } 6801 6802 public void run() { 6803 final ListView listView = (ListView) LayoutInflater.from(mContext) 6804 .inflate(com.android.internal.R.layout.select_dialog, null); 6805 final MyArrayListAdapter adapter = new 6806 MyArrayListAdapter(mContext, mContainers, mMultiple); 6807 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6808 .setView(listView).setCancelable(true) 6809 .setInverseBackgroundForced(true); 6810 6811 if (mMultiple) { 6812 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6813 public void onClick(DialogInterface dialog, int which) { 6814 mWebViewCore.sendMessage( 6815 EventHub.LISTBOX_CHOICES, 6816 adapter.getCount(), 0, 6817 listView.getCheckedItemPositions()); 6818 }}); 6819 b.setNegativeButton(android.R.string.cancel, 6820 new DialogInterface.OnClickListener() { 6821 public void onClick(DialogInterface dialog, int which) { 6822 mWebViewCore.sendMessage( 6823 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6824 }}); 6825 } 6826 final AlertDialog dialog = b.create(); 6827 listView.setAdapter(adapter); 6828 listView.setFocusableInTouchMode(true); 6829 // There is a bug (1250103) where the checks in a ListView with 6830 // multiple items selected are associated with the positions, not 6831 // the ids, so the items do not properly retain their checks when 6832 // filtered. Do not allow filtering on multiple lists until 6833 // that bug is fixed. 6834 6835 listView.setTextFilterEnabled(!mMultiple); 6836 if (mMultiple) { 6837 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6838 int length = mSelectedArray.length; 6839 for (int i = 0; i < length; i++) { 6840 listView.setItemChecked(mSelectedArray[i], true); 6841 } 6842 } else { 6843 listView.setOnItemClickListener(new OnItemClickListener() { 6844 public void onItemClick(AdapterView parent, View v, 6845 int position, long id) { 6846 mWebViewCore.sendMessage( 6847 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6848 dialog.dismiss(); 6849 } 6850 }); 6851 if (mSelection != -1) { 6852 listView.setSelection(mSelection); 6853 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6854 listView.setItemChecked(mSelection, true); 6855 DataSetObserver observer = new SingleDataSetObserver( 6856 adapter.getItemId(mSelection), listView, adapter); 6857 adapter.registerDataSetObserver(observer); 6858 } 6859 } 6860 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6861 public void onCancel(DialogInterface dialog) { 6862 mWebViewCore.sendMessage( 6863 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6864 } 6865 }); 6866 dialog.show(); 6867 } 6868 } 6869 6870 /* 6871 * Request a dropdown menu for a listbox with multiple selection. 6872 * 6873 * @param array Labels for the listbox. 6874 * @param enabledArray State for each element in the list. See static 6875 * integers in Container class. 6876 * @param selectedArray Which positions are initally selected. 6877 */ 6878 void requestListBox(String[] array, int[] enabledArray, int[] 6879 selectedArray) { 6880 mPrivateHandler.post( 6881 new InvokeListBox(array, enabledArray, selectedArray)); 6882 } 6883 6884 /* 6885 * Request a dropdown menu for a listbox with single selection or a single 6886 * <select> element. 6887 * 6888 * @param array Labels for the listbox. 6889 * @param enabledArray State for each element in the list. See static 6890 * integers in Container class. 6891 * @param selection Which position is initally selected. 6892 */ 6893 void requestListBox(String[] array, int[] enabledArray, int selection) { 6894 mPrivateHandler.post( 6895 new InvokeListBox(array, enabledArray, selection)); 6896 } 6897 6898 // called by JNI 6899 private void sendMoveFocus(int frame, int node) { 6900 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6901 new WebViewCore.CursorData(frame, node, 0, 0)); 6902 } 6903 6904 // called by JNI 6905 private void sendMoveMouse(int frame, int node, int x, int y) { 6906 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6907 new WebViewCore.CursorData(frame, node, x, y)); 6908 } 6909 6910 /* 6911 * Send a mouse move event to the webcore thread. 6912 * 6913 * @param removeFocus Pass true if the "mouse" cursor is now over a node 6914 * which wants key events, but it is not the focus. This 6915 * will make the visual appear as though nothing is in 6916 * focus. Remove the WebTextView, if present, and stop 6917 * drawing the blinking caret. 6918 * called by JNI 6919 */ 6920 private void sendMoveMouseIfLatest(boolean removeFocus) { 6921 if (removeFocus) { 6922 clearTextEntry(true); 6923 } 6924 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 6925 cursorData()); 6926 } 6927 6928 // called by JNI 6929 private void sendMotionUp(int touchGeneration, 6930 int frame, int node, int x, int y) { 6931 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6932 touchUpData.mMoveGeneration = touchGeneration; 6933 touchUpData.mFrame = frame; 6934 touchUpData.mNode = node; 6935 touchUpData.mX = x; 6936 touchUpData.mY = y; 6937 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6938 } 6939 6940 6941 private int getScaledMaxXScroll() { 6942 int width; 6943 if (mHeightCanMeasure == false) { 6944 width = getViewWidth() / 4; 6945 } else { 6946 Rect visRect = new Rect(); 6947 calcOurVisibleRect(visRect); 6948 width = visRect.width() / 2; 6949 } 6950 // FIXME the divisor should be retrieved from somewhere 6951 return viewToContentX(width); 6952 } 6953 6954 private int getScaledMaxYScroll() { 6955 int height; 6956 if (mHeightCanMeasure == false) { 6957 height = getViewHeight() / 4; 6958 } else { 6959 Rect visRect = new Rect(); 6960 calcOurVisibleRect(visRect); 6961 height = visRect.height() / 2; 6962 } 6963 // FIXME the divisor should be retrieved from somewhere 6964 // the closest thing today is hard-coded into ScrollView.java 6965 // (from ScrollView.java, line 363) int maxJump = height/2; 6966 return Math.round(height * mZoomManager.getInvScale()); 6967 } 6968 6969 /** 6970 * Called by JNI to invalidate view 6971 */ 6972 private void viewInvalidate() { 6973 invalidate(); 6974 } 6975 6976 /** 6977 * Pass the key directly to the page. This assumes that 6978 * nativePageShouldHandleShiftAndArrows() returned true. 6979 */ 6980 private void letPageHandleNavKey(int keyCode, long time, boolean down) { 6981 int keyEventAction; 6982 int eventHubAction; 6983 if (down) { 6984 keyEventAction = KeyEvent.ACTION_DOWN; 6985 eventHubAction = EventHub.KEY_DOWN; 6986 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 6987 } else { 6988 keyEventAction = KeyEvent.ACTION_UP; 6989 eventHubAction = EventHub.KEY_UP; 6990 } 6991 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 6992 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 6993 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 6994 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 6995 , 0, 0, 0); 6996 mWebViewCore.sendMessage(eventHubAction, event); 6997 } 6998 6999 // return true if the key was handled 7000 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7001 long time) { 7002 if (mNativeClass == 0) { 7003 return false; 7004 } 7005 mLastCursorTime = time; 7006 mLastCursorBounds = nativeGetCursorRingBounds(); 7007 boolean keyHandled 7008 = nativeMoveCursor(keyCode, count, noScroll) == false; 7009 if (DebugFlags.WEB_VIEW) { 7010 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7011 + " mLastCursorTime=" + mLastCursorTime 7012 + " handled=" + keyHandled); 7013 } 7014 if (keyHandled == false || mHeightCanMeasure == false) { 7015 return keyHandled; 7016 } 7017 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7018 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7019 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7020 Rect visRect = new Rect(); 7021 calcOurVisibleRect(visRect); 7022 Rect outset = new Rect(visRect); 7023 int maxXScroll = visRect.width() / 2; 7024 int maxYScroll = visRect.height() / 2; 7025 outset.inset(-maxXScroll, -maxYScroll); 7026 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7027 return keyHandled; 7028 } 7029 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7030 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7031 maxXScroll); 7032 if (maxH > 0) { 7033 pinScrollBy(maxH, 0, true, 0); 7034 } else { 7035 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7036 -maxXScroll); 7037 if (maxH < 0) { 7038 pinScrollBy(maxH, 0, true, 0); 7039 } 7040 } 7041 if (mLastCursorBounds.isEmpty()) return keyHandled; 7042 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7043 return keyHandled; 7044 } 7045 if (DebugFlags.WEB_VIEW) { 7046 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7047 + contentCursorRingBounds); 7048 } 7049 requestRectangleOnScreen(viewCursorRingBounds); 7050 mUserScroll = true; 7051 return keyHandled; 7052 } 7053 7054 /** 7055 * Set the background color. It's white by default. Pass 7056 * zero to make the view transparent. 7057 * @param color the ARGB color described by Color.java 7058 */ 7059 public void setBackgroundColor(int color) { 7060 mBackgroundColor = color; 7061 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7062 } 7063 7064 public void debugDump() { 7065 nativeDebugDump(); 7066 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7067 } 7068 7069 /** 7070 * Draw the HTML page into the specified canvas. This call ignores any 7071 * view-specific zoom, scroll offset, or other changes. It does not draw 7072 * any view-specific chrome, such as progress or URL bars. 7073 * 7074 * @hide only needs to be accessible to Browser and testing 7075 */ 7076 public void drawPage(Canvas canvas) { 7077 nativeDraw(canvas, 0, 0, false); 7078 } 7079 7080 /** 7081 * Set the time to wait between passing touches to WebCore. See also the 7082 * TOUCH_SENT_INTERVAL member for further discussion. 7083 * 7084 * @hide This is only used by the DRT test application. 7085 */ 7086 public void setTouchInterval(int interval) { 7087 mCurrentTouchInterval = interval; 7088 } 7089 7090 /** 7091 * Update our cache with updatedText. 7092 * @param updatedText The new text to put in our cache. 7093 */ 7094 /* package */ void updateCachedTextfield(String updatedText) { 7095 // Also place our generation number so that when we look at the cache 7096 // we recognize that it is up to date. 7097 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7098 } 7099 7100 private native int nativeCacheHitFramePointer(); 7101 private native Rect nativeCacheHitNodeBounds(); 7102 private native int nativeCacheHitNodePointer(); 7103 /* package */ native void nativeClearCursor(); 7104 private native void nativeCreate(int ptr); 7105 private native int nativeCursorFramePointer(); 7106 private native Rect nativeCursorNodeBounds(); 7107 private native int nativeCursorNodePointer(); 7108 /* package */ native boolean nativeCursorMatchesFocus(); 7109 private native boolean nativeCursorIntersects(Rect visibleRect); 7110 private native boolean nativeCursorIsAnchor(); 7111 private native boolean nativeCursorIsTextInput(); 7112 private native Point nativeCursorPosition(); 7113 private native String nativeCursorText(); 7114 /** 7115 * Returns true if the native cursor node says it wants to handle key events 7116 * (ala plugins). This can only be called if mNativeClass is non-zero! 7117 */ 7118 private native boolean nativeCursorWantsKeyEvents(); 7119 private native void nativeDebugDump(); 7120 private native void nativeDestroy(); 7121 7122 /** 7123 * Draw the picture set with a background color and extra. If 7124 * "splitIfNeeded" is true and the return value is not 0, the return value 7125 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 7126 * native allocation can be freed. 7127 */ 7128 private native int nativeDraw(Canvas canvas, int color, int extra, 7129 boolean splitIfNeeded); 7130 private native void nativeDumpDisplayTree(String urlOrNull); 7131 private native boolean nativeEvaluateLayersAnimations(); 7132 private native void nativeExtendSelection(int x, int y); 7133 private native int nativeFindAll(String findLower, String findUpper); 7134 private native void nativeFindNext(boolean forward); 7135 /* package */ native int nativeFocusCandidateFramePointer(); 7136 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7137 /* package */ native boolean nativeFocusCandidateIsPassword(); 7138 private native boolean nativeFocusCandidateIsRtlText(); 7139 private native boolean nativeFocusCandidateIsTextInput(); 7140 /* package */ native int nativeFocusCandidateMaxLength(); 7141 /* package */ native String nativeFocusCandidateName(); 7142 private native Rect nativeFocusCandidateNodeBounds(); 7143 /* package */ native int nativeFocusCandidatePointer(); 7144 private native String nativeFocusCandidateText(); 7145 private native int nativeFocusCandidateTextSize(); 7146 /** 7147 * Returns an integer corresponding to WebView.cpp::type. 7148 * See WebTextView.setType() 7149 */ 7150 private native int nativeFocusCandidateType(); 7151 private native boolean nativeFocusIsPlugin(); 7152 private native Rect nativeFocusNodeBounds(); 7153 /* package */ native int nativeFocusNodePointer(); 7154 private native Rect nativeGetCursorRingBounds(); 7155 private native String nativeGetSelection(); 7156 private native boolean nativeHasCursorNode(); 7157 private native boolean nativeHasFocusNode(); 7158 private native void nativeHideCursor(); 7159 private native boolean nativeHitSelection(int x, int y); 7160 private native String nativeImageURI(int x, int y); 7161 private native void nativeInstrumentReport(); 7162 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7163 // return true if the page has been scrolled 7164 private native boolean nativeMotionUp(int x, int y, int slop); 7165 // returns false if it handled the key 7166 private native boolean nativeMoveCursor(int keyCode, int count, 7167 boolean noScroll); 7168 private native int nativeMoveGeneration(); 7169 private native void nativeMoveSelection(int x, int y); 7170 /** 7171 * @return true if the page should get the shift and arrow keys, rather 7172 * than select text/navigation. 7173 * 7174 * If the focus is a plugin, or if the focus and cursor match and are 7175 * a contentEditable element, then the page should handle these keys. 7176 */ 7177 private native boolean nativePageShouldHandleShiftAndArrows(); 7178 private native boolean nativePointInNavCache(int x, int y, int slop); 7179 // Like many other of our native methods, you must make sure that 7180 // mNativeClass is not null before calling this method. 7181 private native void nativeRecordButtons(boolean focused, 7182 boolean pressed, boolean invalidate); 7183 private native void nativeResetSelection(); 7184 private native void nativeSelectAll(); 7185 private native void nativeSelectBestAt(Rect rect); 7186 private native int nativeSelectionX(); 7187 private native int nativeSelectionY(); 7188 private native int nativeFindIndex(); 7189 private native void nativeSetExtendSelection(); 7190 private native void nativeSetFindIsEmpty(); 7191 private native void nativeSetFindIsUp(boolean isUp); 7192 private native void nativeSetFollowedLink(boolean followed); 7193 private native void nativeSetHeightCanMeasure(boolean measure); 7194 private native void nativeSetBaseLayer(int layer); 7195 private native void nativeReplaceBaseContent(int content); 7196 private native void nativeCopyBaseContentToPicture(Picture pict); 7197 private native boolean nativeHasContent(); 7198 private native void nativeSetSelectionPointer(boolean set, 7199 float scale, int x, int y); 7200 private native boolean nativeStartSelection(int x, int y); 7201 private native Rect nativeSubtractLayers(Rect content); 7202 private native int nativeTextGeneration(); 7203 // Never call this version except by updateCachedTextfield(String) - 7204 // we always want to pass in our generation number. 7205 private native void nativeUpdateCachedTextfield(String updatedText, 7206 int generation); 7207 private native boolean nativeWordSelection(int x, int y); 7208 // return NO_LEFTEDGE means failure. 7209 static final int NO_LEFTEDGE = -1; 7210 native int nativeGetBlockLeftEdge(int x, int y, float scale); 7211 7212 // Returns a pointer to the scrollable LayerAndroid at the given point. 7213 private native int nativeScrollableLayer(int x, int y); 7214 private native boolean nativeScrollLayer(int layer, int dx, int dy); 7215} 7216