WebView.java revision 7924a4a3a032f97fb587732d188513adec1420a4
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.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.Context; 24import android.content.DialogInterface; 25import android.content.IntentFilter; 26import android.content.DialogInterface.OnCancelListener; 27import android.content.pm.PackageInfo; 28import android.content.pm.PackageManager; 29import android.content.Intent; 30import android.database.DataSetObserver; 31import android.graphics.Bitmap; 32import android.graphics.Canvas; 33import android.graphics.Color; 34import android.graphics.CornerPathEffect; 35import android.graphics.DrawFilter; 36import android.graphics.Interpolator; 37import android.graphics.Paint; 38import android.graphics.PaintFlagsDrawFilter; 39import android.graphics.Picture; 40import android.graphics.Point; 41import android.graphics.Rect; 42import android.graphics.RectF; 43import android.graphics.Region; 44import android.graphics.drawable.Drawable; 45import android.net.Uri; 46import android.net.http.SslCertificate; 47import android.os.AsyncTask; 48import android.os.Bundle; 49import android.os.Handler; 50import android.os.Message; 51import android.os.SystemClock; 52import android.provider.Settings; 53import android.speech.tts.TextToSpeech; 54import android.text.Selection; 55import android.text.Spannable; 56import android.util.AttributeSet; 57import android.util.EventLog; 58import android.util.Log; 59import android.util.TypedValue; 60import android.view.Gravity; 61import android.view.KeyEvent; 62import android.view.LayoutInflater; 63import android.view.MotionEvent; 64import android.view.ScaleGestureDetector; 65import android.view.SoundEffectConstants; 66import android.view.VelocityTracker; 67import android.view.View; 68import android.view.ViewConfiguration; 69import android.view.ViewGroup; 70import android.view.ViewTreeObserver; 71import android.view.accessibility.AccessibilityManager; 72import android.view.inputmethod.EditorInfo; 73import android.view.inputmethod.InputConnection; 74import android.view.inputmethod.InputMethodManager; 75import android.webkit.WebTextView.AutoCompleteAdapter; 76import android.webkit.WebViewCore.EventHub; 77import android.webkit.WebViewCore.TouchEventData; 78import android.webkit.WebViewCore.TouchHighlightData; 79import android.widget.AbsoluteLayout; 80import android.widget.Adapter; 81import android.widget.AdapterView; 82import android.widget.AdapterView.OnItemClickListener; 83import android.widget.ArrayAdapter; 84import android.widget.CheckedTextView; 85import android.widget.LinearLayout; 86import android.widget.ListView; 87import android.widget.Scroller; 88import android.widget.Toast; 89 90import junit.framework.Assert; 91 92import java.io.File; 93import java.io.FileInputStream; 94import java.io.FileNotFoundException; 95import java.io.FileOutputStream; 96import java.io.IOException; 97import java.io.InputStreamReader; 98import java.net.URLDecoder; 99import java.util.ArrayList; 100import java.util.HashMap; 101import java.util.HashSet; 102import java.util.List; 103import java.util.Map; 104import java.util.Set; 105import java.util.regex.Matcher; 106import java.util.regex.Pattern; 107 108/** 109 * <p>A View that displays web pages. This class is the basis upon which you 110 * can roll your own web browser or simply display some online content within your Activity. 111 * It uses the WebKit rendering engine to display 112 * web pages and includes methods to navigate forward and backward 113 * through a history, zoom in and out, perform text searches and more.</p> 114 * <p>To enable the built-in zoom, set 115 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 116 * (introduced in API version 3). 117 * <p>Note that, in order for your Activity to access the Internet and load web pages 118 * in a WebView, you must add the {@code INTERNET} permissions to your 119 * Android Manifest file:</p> 120 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 121 * 122 * <p>This must be a child of the <a 123 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 124 * element.</p> 125 * 126 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 127 * tutorial</a>.</p> 128 * 129 * <h3>Basic usage</h3> 130 * 131 * <p>By default, a WebView provides no browser-like widgets, does not 132 * enable JavaScript and web page errors are ignored. If your goal is only 133 * to display some HTML as a part of your UI, this is probably fine; 134 * the user won't need to interact with the web page beyond reading 135 * it, and the web page won't need to interact with the user. If you 136 * actually want a full-blown web browser, then you probably want to 137 * invoke the Browser application with a URL Intent rather than show it 138 * with a WebView. For example: 139 * <pre> 140 * Uri uri = Uri.parse("http://www.example.com"); 141 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 142 * startActivity(intent); 143 * </pre> 144 * <p>See {@link android.content.Intent} for more information.</p> 145 * 146 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 147 * or set the entire Activity window as a WebView during {@link 148 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 149 * <pre class="prettyprint"> 150 * WebView webview = new WebView(this); 151 * setContentView(webview); 152 * </pre> 153 * 154 * <p>Then load the desired web page:</p> 155 * <pre> 156 * // Simplest usage: note that an exception will NOT be thrown 157 * // if there is an error loading this page (see below). 158 * webview.loadUrl("http://slashdot.org/"); 159 * 160 * // OR, you can also load from an HTML string: 161 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 162 * webview.loadData(summary, "text/html", "utf-8"); 163 * // ... although note that there are restrictions on what this HTML can do. 164 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 165 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 166 * </pre> 167 * 168 * <p>A WebView has several customization points where you can add your 169 * own behavior. These are:</p> 170 * 171 * <ul> 172 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 173 * This class is called when something that might impact a 174 * browser UI happens, for instance, progress updates and 175 * JavaScript alerts are sent here (see <a 176 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 177 * </li> 178 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 179 * It will be called when things happen that impact the 180 * rendering of the content, eg, errors or form submissions. You 181 * can also intercept URL loading here (via {@link 182 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 183 * shouldOverrideUrlLoading()}).</li> 184 * <li>Modifying the {@link android.webkit.WebSettings}, such as 185 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 186 * setJavaScriptEnabled()}. </li> 187 * <li>Adding JavaScript-to-Java interfaces with the {@link 188 * android.webkit.WebView#addJavascriptInterface} method. 189 * This lets you bind Java objects into the WebView so they can be 190 * controlled from the web pages JavaScript.</li> 191 * </ul> 192 * 193 * <p>Here's a more complicated example, showing error handling, 194 * settings, and progress notification:</p> 195 * 196 * <pre class="prettyprint"> 197 * // Let's display the progress in the activity title bar, like the 198 * // browser app does. 199 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 200 * 201 * webview.getSettings().setJavaScriptEnabled(true); 202 * 203 * final Activity activity = this; 204 * webview.setWebChromeClient(new WebChromeClient() { 205 * public void onProgressChanged(WebView view, int progress) { 206 * // Activities and WebViews measure progress with different scales. 207 * // The progress meter will automatically disappear when we reach 100% 208 * activity.setProgress(progress * 1000); 209 * } 210 * }); 211 * webview.setWebViewClient(new WebViewClient() { 212 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 213 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 214 * } 215 * }); 216 * 217 * webview.loadUrl("http://slashdot.org/"); 218 * </pre> 219 * 220 * <h3>Cookie and window management</h3> 221 * 222 * <p>For obvious security reasons, your application has its own 223 * cache, cookie store etc.—it does not share the Browser 224 * application's data. Cookies are managed on a separate thread, so 225 * operations like index building don't block the UI 226 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 227 * if you want to use cookies in your application. 228 * </p> 229 * 230 * <p>By default, requests by the HTML to open new windows are 231 * ignored. This is true whether they be opened by JavaScript or by 232 * the target attribute on a link. You can customize your 233 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 234 * and render them in whatever manner you want.</p> 235 * 236 * <p>The standard behavior for an Activity is to be destroyed and 237 * recreated when the device orientation or any other configuration changes. This will cause 238 * the WebView to reload the current page. If you don't want that, you 239 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 240 * changes, and then just leave the WebView alone. It'll automatically 241 * re-orient itself as appropriate. Read <a 242 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 243 * more information about how to handle configuration changes during runtime.</p> 244 * 245 * 246 * <h3>Building web pages to support different screen densities</h3> 247 * 248 * <p>The screen density of a device is based on the screen resolution. A screen with low density 249 * has fewer available pixels per inch, where a screen with high density 250 * has more — sometimes significantly more — pixels per inch. The density of a 251 * screen is important because, other things being equal, a UI element (such as a button) whose 252 * height and width are defined in terms of screen pixels will appear larger on the lower density 253 * screen and smaller on the higher density screen. 254 * For simplicity, Android collapses all actual screen densities into three generalized densities: 255 * high, medium, and low.</p> 256 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 257 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 258 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 259 * are bigger). 260 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 261 * you (as a web developer) target screens with different screen densities.</p> 262 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 263 * <ul> 264 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 265 * default scaling factor used for the current device. For example, if the value of {@code 266 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 267 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 268 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 269 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 270 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 271 * (discussed below), then you can stop this default scaling behavior.</li> 272 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 273 * densities for which this style sheet is to be used. The corresponding value should be either 274 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 275 * density, or high density screens, respectively. For example: 276 * <pre> 277 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 278 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 279 * which is the high density pixel ratio.</p> 280 * </li> 281 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 282 * this to specify the target density for which the web page is designed, using the following 283 * values: 284 * <ul> 285 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 286 * occurs.</li> 287 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 288 * as appropriate.</li> 289 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 290 * low density screens scale down. This is also the default behavior.</li> 291 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 292 * as appropriate.</li> 293 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 294 * values are 70-400).</li> 295 * </ul> 296 * <p>Here's an example meta tag to specify the target density:</p> 297 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 298 * </ul> 299 * <p>If you want to modify your web page for different densities, by using the {@code 300 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 301 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 302 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 303 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 304 * 305 * 306 */ 307@Widget 308public class WebView extends AbsoluteLayout 309 implements ViewTreeObserver.OnGlobalFocusChangeListener, 310 ViewGroup.OnHierarchyChangeListener { 311 312 // enable debug output for drag trackers 313 private static final boolean DEBUG_DRAG_TRACKER = false; 314 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 315 // the screen all-the-time. Good for profiling our drawing code 316 static private final boolean AUTO_REDRAW_HACK = false; 317 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 318 private boolean mAutoRedraw; 319 320 static final String LOGTAG = "webview"; 321 322 private ZoomManager mZoomManager; 323 324 /** 325 * Transportation object for returning WebView across thread boundaries. 326 */ 327 public class WebViewTransport { 328 private WebView mWebview; 329 330 /** 331 * Set the WebView to the transportation object. 332 * @param webview The WebView to transport. 333 */ 334 public synchronized void setWebView(WebView webview) { 335 mWebview = webview; 336 } 337 338 /** 339 * Return the WebView object. 340 * @return WebView The transported WebView object. 341 */ 342 public synchronized WebView getWebView() { 343 return mWebview; 344 } 345 } 346 347 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 348 private final CallbackProxy mCallbackProxy; 349 350 private final WebViewDatabase mDatabase; 351 352 // SSL certificate for the main top-level page (if secure) 353 private SslCertificate mCertificate; 354 355 // Native WebView pointer that is 0 until the native object has been 356 // created. 357 private int mNativeClass; 358 // This would be final but it needs to be set to null when the WebView is 359 // destroyed. 360 private WebViewCore mWebViewCore; 361 // Handler for dispatching UI messages. 362 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 363 private WebTextView mWebTextView; 364 // Used to ignore changes to webkit text that arrives to the UI side after 365 // more key events. 366 private int mTextGeneration; 367 368 /* package */ void incrementTextGeneration() { mTextGeneration++; } 369 370 // Used by WebViewCore to create child views. 371 /* package */ final ViewManager mViewManager; 372 373 // Used to display in full screen mode 374 PluginFullScreenHolder mFullScreenHolder; 375 376 /** 377 * Position of the last touch event. 378 */ 379 private float mLastTouchX; 380 private float mLastTouchY; 381 382 /** 383 * Time of the last touch event. 384 */ 385 private long mLastTouchTime; 386 387 /** 388 * Time of the last time sending touch event to WebViewCore 389 */ 390 private long mLastSentTouchTime; 391 392 /** 393 * The minimum elapsed time before sending another ACTION_MOVE event to 394 * WebViewCore. This really should be tuned for each type of the devices. 395 * For example in Google Map api test case, it takes Dream device at least 396 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 397 * triggering the layout and drawing the picture. While the same process 398 * takes 60+ms on the current high speed device. If we make 399 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 400 * to WebViewCore queue and the real layout and draw events will be pushed 401 * to further, which slows down the refresh rate. Choose 50 to favor the 402 * current high speed devices. For Dream like devices, 100 is a better 403 * choice. Maybe make this in the buildspec later. 404 */ 405 private static final int TOUCH_SENT_INTERVAL = 50; 406 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 407 408 /** 409 * Helper class to get velocity for fling 410 */ 411 VelocityTracker mVelocityTracker; 412 private int mMaximumFling; 413 private float mLastVelocity; 414 private float mLastVelX; 415 private float mLastVelY; 416 417 // A pointer to the native scrollable layer when dragging layers. Only 418 // valid when mTouchMode is TOUCH_DRAG_LAYER_MODE. 419 private int mScrollingLayer; 420 421 // only trigger accelerated fling if the new velocity is at least 422 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 423 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 424 425 /** 426 * Touch mode 427 */ 428 private int mTouchMode = TOUCH_DONE_MODE; 429 private static final int TOUCH_INIT_MODE = 1; 430 private static final int TOUCH_DRAG_START_MODE = 2; 431 private static final int TOUCH_DRAG_MODE = 3; 432 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 433 private static final int TOUCH_SHORTPRESS_MODE = 5; 434 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 435 private static final int TOUCH_DONE_MODE = 7; 436 private static final int TOUCH_PINCH_DRAG = 8; 437 private static final int TOUCH_DRAG_LAYER_MODE = 9; 438 439 // Whether to forward the touch events to WebCore 440 private boolean mForwardTouchEvents = false; 441 442 // Whether to prevent default during touch. The initial value depends on 443 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 444 // for touch down. Otherwise UI will wait for the answer of the first 445 // confirmed move before taking over the control. 446 private static final int PREVENT_DEFAULT_NO = 0; 447 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 448 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 449 private static final int PREVENT_DEFAULT_YES = 3; 450 private static final int PREVENT_DEFAULT_IGNORE = 4; 451 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 452 453 // true when the touch movement exceeds the slop 454 private boolean mConfirmMove; 455 456 // if true, touch events will be first processed by WebCore, if prevent 457 // default is not set, the UI will continue handle them. 458 private boolean mDeferTouchProcess; 459 460 // to avoid interfering with the current touch events, track them 461 // separately. Currently no snapping or fling in the deferred process mode 462 private int mDeferTouchMode = TOUCH_DONE_MODE; 463 private float mLastDeferTouchX; 464 private float mLastDeferTouchY; 465 466 // To keep track of whether the current drag was initiated by a WebTextView, 467 // so that we know not to hide the cursor 468 boolean mDragFromTextInput; 469 470 // Whether or not to draw the cursor ring. 471 private boolean mDrawCursorRing = true; 472 473 // true if onPause has been called (and not onResume) 474 private boolean mIsPaused; 475 476 /** 477 * Customizable constant 478 */ 479 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 480 private int mTouchSlopSquare; 481 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 482 private int mDoubleTapSlopSquare; 483 // pre-computed density adjusted navigation slop 484 private int mNavSlop; 485 // This should be ViewConfiguration.getTapTimeout() 486 // But system time out is 100ms, which is too short for the browser. 487 // In the browser, if it switches out of tap too soon, jump tap won't work. 488 private static final int TAP_TIMEOUT = 200; 489 // This should be ViewConfiguration.getLongPressTimeout() 490 // But system time out is 500ms, which is too short for the browser. 491 // With a short timeout, it's difficult to treat trigger a short press. 492 private static final int LONG_PRESS_TIMEOUT = 1000; 493 // needed to avoid flinging after a pause of no movement 494 private static final int MIN_FLING_TIME = 250; 495 // draw unfiltered after drag is held without movement 496 private static final int MOTIONLESS_TIME = 100; 497 // The amount of content to overlap between two screens when going through 498 // pages with the space bar, in pixels. 499 private static final int PAGE_SCROLL_OVERLAP = 24; 500 501 /** 502 * These prevent calling requestLayout if either dimension is fixed. This 503 * depends on the layout parameters and the measure specs. 504 */ 505 boolean mWidthCanMeasure; 506 boolean mHeightCanMeasure; 507 508 // Remember the last dimensions we sent to the native side so we can avoid 509 // sending the same dimensions more than once. 510 int mLastWidthSent; 511 int mLastHeightSent; 512 513 private int mContentWidth; // cache of value from WebViewCore 514 private int mContentHeight; // cache of value from WebViewCore 515 516 // Need to have the separate control for horizontal and vertical scrollbar 517 // style than the View's single scrollbar style 518 private boolean mOverlayHorizontalScrollbar = true; 519 private boolean mOverlayVerticalScrollbar = false; 520 521 // our standard speed. this way small distances will be traversed in less 522 // time than large distances, but we cap the duration, so that very large 523 // distances won't take too long to get there. 524 private static final int STD_SPEED = 480; // pixels per second 525 // time for the longest scroll animation 526 private static final int MAX_DURATION = 750; // milliseconds 527 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 528 private Scroller mScroller; 529 530 private boolean mWrapContent; 531 private static final int MOTIONLESS_FALSE = 0; 532 private static final int MOTIONLESS_PENDING = 1; 533 private static final int MOTIONLESS_TRUE = 2; 534 private static final int MOTIONLESS_IGNORE = 3; 535 private int mHeldMotionless; 536 537 // An instance for injecting accessibility in WebViews with disabled 538 // JavaScript or ones for which no accessibility script exists 539 private AccessibilityInjector mAccessibilityInjector; 540 541 // flag indicating if accessibility script is injected so we 542 // know to handle Shift and arrows natively first 543 private boolean mAccessibilityScriptInjected; 544 545 // the color used to highlight the touch rectangles 546 private static final int mHightlightColor = 0x33000000; 547 // the round corner for the highlight path 548 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 549 // the region indicating where the user touched on the screen 550 private Region mTouchHighlightRegion = new Region(); 551 // the paint for the touch highlight 552 private Paint mTouchHightlightPaint; 553 // debug only 554 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 555 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 556 private Paint mTouchCrossHairColor; 557 private int mTouchHighlightX; 558 private int mTouchHighlightY; 559 560 /* 561 * Private message ids 562 */ 563 private static final int REMEMBER_PASSWORD = 1; 564 private static final int NEVER_REMEMBER_PASSWORD = 2; 565 private static final int SWITCH_TO_SHORTPRESS = 3; 566 private static final int SWITCH_TO_LONGPRESS = 4; 567 private static final int RELEASE_SINGLE_TAP = 5; 568 private static final int REQUEST_FORM_DATA = 6; 569 private static final int RESUME_WEBCORE_PRIORITY = 7; 570 private static final int DRAG_HELD_MOTIONLESS = 8; 571 private static final int AWAKEN_SCROLL_BARS = 9; 572 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 573 574 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 575 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 576 577 /* 578 * Package message ids 579 */ 580 //! arg1=x, arg2=y 581 static final int SCROLL_TO_MSG_ID = 101; 582 static final int SCROLL_BY_MSG_ID = 102; 583 //! arg1=x, arg2=y 584 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 585 //! arg1=x, arg2=y 586 static final int SYNC_SCROLL_TO_MSG_ID = 104; 587 static final int NEW_PICTURE_MSG_ID = 105; 588 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 589 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 590 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 591 static final int UPDATE_ZOOM_RANGE = 109; 592 static final int UNHANDLED_NAV_KEY = 110; 593 static final int CLEAR_TEXT_ENTRY = 111; 594 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 595 static final int SHOW_RECT_MSG_ID = 113; 596 static final int LONG_PRESS_CENTER = 114; 597 static final int PREVENT_TOUCH_ID = 115; 598 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 599 // obj=Rect in doc coordinates 600 static final int INVAL_RECT_MSG_ID = 117; 601 static final int REQUEST_KEYBOARD = 118; 602 static final int DO_MOTION_UP = 119; 603 static final int SHOW_FULLSCREEN = 120; 604 static final int HIDE_FULLSCREEN = 121; 605 static final int DOM_FOCUS_CHANGED = 122; 606 static final int REPLACE_BASE_CONTENT = 123; 607 // 124; 608 static final int RETURN_LABEL = 125; 609 static final int FIND_AGAIN = 126; 610 static final int CENTER_FIT_RECT = 127; 611 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 612 static final int SET_SCROLLBAR_MODES = 129; 613 static final int SELECTION_STRING_CHANGED = 130; 614 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 615 static final int SAVE_WEBARCHIVE_FINISHED = 132; 616 617 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 618 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 619 620 static final String[] HandlerPrivateDebugString = { 621 "REMEMBER_PASSWORD", // = 1; 622 "NEVER_REMEMBER_PASSWORD", // = 2; 623 "SWITCH_TO_SHORTPRESS", // = 3; 624 "SWITCH_TO_LONGPRESS", // = 4; 625 "RELEASE_SINGLE_TAP", // = 5; 626 "REQUEST_FORM_DATA", // = 6; 627 "RESUME_WEBCORE_PRIORITY", // = 7; 628 "DRAG_HELD_MOTIONLESS", // = 8; 629 "AWAKEN_SCROLL_BARS", // = 9; 630 "PREVENT_DEFAULT_TIMEOUT" // = 10; 631 }; 632 633 static final String[] HandlerPackageDebugString = { 634 "SCROLL_TO_MSG_ID", // = 101; 635 "SCROLL_BY_MSG_ID", // = 102; 636 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 637 "SYNC_SCROLL_TO_MSG_ID", // = 104; 638 "NEW_PICTURE_MSG_ID", // = 105; 639 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 640 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 641 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 642 "UPDATE_ZOOM_RANGE", // = 109; 643 "UNHANDLED_NAV_KEY", // = 110; 644 "CLEAR_TEXT_ENTRY", // = 111; 645 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 646 "SHOW_RECT_MSG_ID", // = 113; 647 "LONG_PRESS_CENTER", // = 114; 648 "PREVENT_TOUCH_ID", // = 115; 649 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 650 "INVAL_RECT_MSG_ID", // = 117; 651 "REQUEST_KEYBOARD", // = 118; 652 "DO_MOTION_UP", // = 119; 653 "SHOW_FULLSCREEN", // = 120; 654 "HIDE_FULLSCREEN", // = 121; 655 "DOM_FOCUS_CHANGED", // = 122; 656 "REPLACE_BASE_CONTENT", // = 123; 657 "124", // = 124; 658 "RETURN_LABEL", // = 125; 659 "FIND_AGAIN", // = 126; 660 "CENTER_FIT_RECT", // = 127; 661 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 662 "SET_SCROLLBAR_MODES", // = 129; 663 "SELECTION_STRING_CHANGED", // = 130; 664 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 665 "SAVE_WEBARCHIVE_FINISHED" // = 132; 666 }; 667 668 // If the site doesn't use the viewport meta tag to specify the viewport, 669 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 670 static final int DEFAULT_VIEWPORT_WIDTH = 1040; 671 672 // normally we try to fit the content to the minimum preferred width 673 // calculated by the Webkit. To avoid the bad behavior when some site's 674 // minimum preferred width keeps growing when changing the viewport width or 675 // the minimum preferred width is huge, an upper limit is needed. 676 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 677 678 // initial scale in percent. 0 means using default. 679 private int mInitialScaleInPercent = 0; 680 681 private boolean mUserScroll = false; 682 683 private int mSnapScrollMode = SNAP_NONE; 684 private static final int SNAP_NONE = 0; 685 private static final int SNAP_LOCK = 1; // not a separate state 686 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 687 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 688 private boolean mSnapPositive; 689 690 // keep these in sync with their counterparts in WebView.cpp 691 private static final int DRAW_EXTRAS_NONE = 0; 692 private static final int DRAW_EXTRAS_FIND = 1; 693 private static final int DRAW_EXTRAS_SELECTION = 2; 694 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 695 696 // keep this in sync with WebCore:ScrollbarMode in WebKit 697 private static final int SCROLLBAR_AUTO = 0; 698 private static final int SCROLLBAR_ALWAYSOFF = 1; 699 // as we auto fade scrollbar, this is ignored. 700 private static final int SCROLLBAR_ALWAYSON = 2; 701 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 702 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 703 704 // constants for determining script injection strategy 705 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 706 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 707 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 708 709 // the alias via which accessibility JavaScript interface is exposed 710 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 711 712 // JavaScript to inject the script chooser which will 713 // pick the right script for the current URL 714 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 715 "javascript:(function() {" + 716 " var chooser = document.createElement('script');" + 717 " chooser.type = 'text/javascript';" + 718 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 719 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 720 " })();"; 721 722 // Regular expression that matches the "axs" URL parameter. 723 // The value of 0 means the accessibility script is opted out 724 // The value of 1 means the accessibility script is already injected 725 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 726 727 // variable to cache the above pattern in case accessibility is enabled. 728 private Pattern mMatchAxsUrlParameterPattern; 729 730 // Used to match key downs and key ups 731 private boolean mGotKeyDown; 732 733 /* package */ static boolean mLogEvent = true; 734 735 // for event log 736 private long mLastTouchUpTime = 0; 737 738 /** 739 * URI scheme for telephone number 740 */ 741 public static final String SCHEME_TEL = "tel:"; 742 /** 743 * URI scheme for email address 744 */ 745 public static final String SCHEME_MAILTO = "mailto:"; 746 /** 747 * URI scheme for map address 748 */ 749 public static final String SCHEME_GEO = "geo:0,0?q="; 750 751 private int mBackgroundColor = Color.WHITE; 752 753 // Used to notify listeners of a new picture. 754 private PictureListener mPictureListener; 755 /** 756 * Interface to listen for new pictures as they change. 757 */ 758 public interface PictureListener { 759 /** 760 * Notify the listener that the picture has changed. 761 * @param view The WebView that owns the picture. 762 * @param picture The new picture. 763 */ 764 public void onNewPicture(WebView view, Picture picture); 765 } 766 767 // FIXME: Want to make this public, but need to change the API file. 768 public /*static*/ class HitTestResult { 769 /** 770 * Default HitTestResult, where the target is unknown 771 */ 772 public static final int UNKNOWN_TYPE = 0; 773 /** 774 * HitTestResult for hitting a HTML::a tag 775 */ 776 public static final int ANCHOR_TYPE = 1; 777 /** 778 * HitTestResult for hitting a phone number 779 */ 780 public static final int PHONE_TYPE = 2; 781 /** 782 * HitTestResult for hitting a map address 783 */ 784 public static final int GEO_TYPE = 3; 785 /** 786 * HitTestResult for hitting an email address 787 */ 788 public static final int EMAIL_TYPE = 4; 789 /** 790 * HitTestResult for hitting an HTML::img tag 791 */ 792 public static final int IMAGE_TYPE = 5; 793 /** 794 * HitTestResult for hitting a HTML::a tag which contains HTML::img 795 */ 796 public static final int IMAGE_ANCHOR_TYPE = 6; 797 /** 798 * HitTestResult for hitting a HTML::a tag with src=http 799 */ 800 public static final int SRC_ANCHOR_TYPE = 7; 801 /** 802 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 803 */ 804 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 805 /** 806 * HitTestResult for hitting an edit text area 807 */ 808 public static final int EDIT_TEXT_TYPE = 9; 809 810 private int mType; 811 private String mExtra; 812 813 HitTestResult() { 814 mType = UNKNOWN_TYPE; 815 } 816 817 private void setType(int type) { 818 mType = type; 819 } 820 821 private void setExtra(String extra) { 822 mExtra = extra; 823 } 824 825 public int getType() { 826 return mType; 827 } 828 829 public String getExtra() { 830 return mExtra; 831 } 832 } 833 834 /** 835 * Construct a new WebView with a Context object. 836 * @param context A Context object used to access application assets. 837 */ 838 public WebView(Context context) { 839 this(context, null); 840 } 841 842 /** 843 * Construct a new WebView with layout parameters. 844 * @param context A Context object used to access application assets. 845 * @param attrs An AttributeSet passed to our parent. 846 */ 847 public WebView(Context context, AttributeSet attrs) { 848 this(context, attrs, com.android.internal.R.attr.webViewStyle); 849 } 850 851 /** 852 * Construct a new WebView with layout parameters and a default style. 853 * @param context A Context object used to access application assets. 854 * @param attrs An AttributeSet passed to our parent. 855 * @param defStyle The default style resource ID. 856 */ 857 public WebView(Context context, AttributeSet attrs, int defStyle) { 858 this(context, attrs, defStyle, false); 859 } 860 861 /** 862 * Construct a new WebView with layout parameters and a default style. 863 * @param context A Context object used to access application assets. 864 * @param attrs An AttributeSet passed to our parent. 865 * @param defStyle The default style resource ID. 866 */ 867 public WebView(Context context, AttributeSet attrs, int defStyle, 868 boolean privateBrowsing) { 869 this(context, attrs, defStyle, null, privateBrowsing); 870 } 871 872 /** 873 * Construct a new WebView with layout parameters, a default style and a set 874 * of custom Javscript interfaces to be added to the WebView at initialization 875 * time. This guarantees that these interfaces will be available when the JS 876 * context is initialized. 877 * @param context A Context object used to access application assets. 878 * @param attrs An AttributeSet passed to our parent. 879 * @param defStyle The default style resource ID. 880 * @param javascriptInterfaces is a Map of interface names, as keys, and 881 * object implementing those interfaces, as values. 882 * @hide pending API council approval. 883 */ 884 protected WebView(Context context, AttributeSet attrs, int defStyle, 885 Map<String, Object> javascriptInterfaces, boolean privateBrowsing) { 886 super(context, attrs, defStyle); 887 888 if (AccessibilityManager.getInstance(context).isEnabled()) { 889 if (javascriptInterfaces == null) { 890 javascriptInterfaces = new HashMap<String, Object>(); 891 } 892 exposeAccessibilityJavaScriptApi(javascriptInterfaces); 893 } 894 895 mCallbackProxy = new CallbackProxy(context, this); 896 mViewManager = new ViewManager(this); 897 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 898 mDatabase = WebViewDatabase.getInstance(context); 899 mScroller = new Scroller(context); 900 mZoomManager = new ZoomManager(this, mCallbackProxy); 901 902 /* The init method must follow the creation of certain member variables, 903 * such as the mZoomManager. 904 */ 905 init(); 906 setupPackageListener(context); 907 updateMultiTouchSupport(context); 908 909 if (privateBrowsing) { 910 startPrivateBrowsing(); 911 } 912 } 913 914 /* 915 * The intent receiver that monitors for changes to relevant packages (e.g., 916 * sGoogleApps) and notifies WebViewCore of their existence. 917 */ 918 private static BroadcastReceiver sPackageInstallationReceiver = null; 919 920 /* 921 * A set of Google packages we monitor for the 922 * navigator.isApplicationInstalled() API. Add additional packages as 923 * needed. 924 */ 925 private static Set<String> sGoogleApps; 926 static { 927 sGoogleApps = new HashSet<String>(); 928 sGoogleApps.add("com.google.android.youtube"); 929 } 930 931 private void setupPackageListener(Context context) { 932 933 /* 934 * we must synchronize the instance check and the creation of the 935 * receiver to ensure that only ONE receiver exists for all WebView 936 * instances. 937 */ 938 synchronized (WebView.class) { 939 940 // if the receiver already exists then we do not need to register it 941 // again 942 if (sPackageInstallationReceiver != null) { 943 return; 944 } 945 946 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 947 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 948 filter.addDataScheme("package"); 949 sPackageInstallationReceiver = new BroadcastReceiver() { 950 951 @Override 952 public void onReceive(Context context, Intent intent) { 953 final String action = intent.getAction(); 954 final String packageName = intent.getData().getSchemeSpecificPart(); 955 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 956 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 957 // if it is replacing, refreshPlugins() when adding 958 return; 959 } 960 961 if (sGoogleApps.contains(packageName) && mWebViewCore != null) { 962 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 963 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 964 } else { 965 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 966 } 967 } 968 969 PluginManager pm = PluginManager.getInstance(context); 970 if (pm.containsPluginPermissionAndSignatures(packageName)) { 971 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 972 } 973 } 974 }; 975 976 context.getApplicationContext().registerReceiver(sPackageInstallationReceiver, filter); 977 } 978 979 // check if any of the monitored apps are already installed 980 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 981 982 @Override 983 protected Set<String> doInBackground(Void... unused) { 984 Set<String> installedPackages = new HashSet<String>(); 985 PackageManager pm = mContext.getPackageManager(); 986 List<PackageInfo> packages = pm.getInstalledPackages(0); 987 for (PackageInfo p : packages) { 988 if (sGoogleApps.contains(p.packageName)) { 989 installedPackages.add(p.packageName); 990 } 991 } 992 return installedPackages; 993 } 994 995 // Executes on the UI thread 996 @Override 997 protected void onPostExecute(Set<String> installedPackages) { 998 if (mWebViewCore != null) { 999 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1000 } 1001 } 1002 }; 1003 task.execute(); 1004 } 1005 1006 void updateMultiTouchSupport(Context context) { 1007 mZoomManager.updateMultiTouchSupport(context); 1008 } 1009 1010 private void init() { 1011 setWillNotDraw(false); 1012 setFocusable(true); 1013 setFocusableInTouchMode(true); 1014 setClickable(true); 1015 setLongClickable(true); 1016 1017 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1018 int slop = configuration.getScaledTouchSlop(); 1019 mTouchSlopSquare = slop * slop; 1020 mMinLockSnapReverseDistance = slop; 1021 slop = configuration.getScaledDoubleTapSlop(); 1022 mDoubleTapSlopSquare = slop * slop; 1023 final float density = getContext().getResources().getDisplayMetrics().density; 1024 // use one line height, 16 based on our current default font, for how 1025 // far we allow a touch be away from the edge of a link 1026 mNavSlop = (int) (16 * density); 1027 mZoomManager.init(density); 1028 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1029 1030 // Compute the inverse of the density squared. 1031 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1032 } 1033 1034 /** 1035 * Exposes accessibility APIs to JavaScript by appending them to the JavaScript 1036 * interfaces map provided by the WebView client. In case of conflicting 1037 * alias with the one of the accessibility API the user specified one wins. 1038 * 1039 * @param javascriptInterfaces A map with interfaces to be exposed to JavaScript. 1040 */ 1041 private void exposeAccessibilityJavaScriptApi(Map<String, Object> javascriptInterfaces) { 1042 if (javascriptInterfaces.containsKey(ALIAS_ACCESSIBILITY_JS_INTERFACE)) { 1043 Log.w(LOGTAG, "JavaScript interface mapped to \"" + ALIAS_ACCESSIBILITY_JS_INTERFACE 1044 + "\" overrides the accessibility API JavaScript interface. No accessibility" 1045 + "API will be exposed to JavaScript!"); 1046 return; 1047 } 1048 1049 // expose the TTS for now ... 1050 javascriptInterfaces.put(ALIAS_ACCESSIBILITY_JS_INTERFACE, 1051 new TextToSpeech(getContext(), null)); 1052 } 1053 1054 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1055 final float density = mContext.getResources().getDisplayMetrics().density 1056 * 100 / zoomDensity; 1057 mNavSlop = (int) (16 * density); 1058 mZoomManager.updateDefaultZoomDensity(density); 1059 } 1060 1061 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1062 String password, final Message resumeMsg) { 1063 boolean rVal = false; 1064 if (resumeMsg == null) { 1065 // null resumeMsg implies saving password silently 1066 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1067 } else { 1068 final Message remember = mPrivateHandler.obtainMessage( 1069 REMEMBER_PASSWORD); 1070 remember.getData().putString("host", schemePlusHost); 1071 remember.getData().putString("username", username); 1072 remember.getData().putString("password", password); 1073 remember.obj = resumeMsg; 1074 1075 final Message neverRemember = mPrivateHandler.obtainMessage( 1076 NEVER_REMEMBER_PASSWORD); 1077 neverRemember.getData().putString("host", schemePlusHost); 1078 neverRemember.getData().putString("username", username); 1079 neverRemember.getData().putString("password", password); 1080 neverRemember.obj = resumeMsg; 1081 1082 new AlertDialog.Builder(getContext()) 1083 .setTitle(com.android.internal.R.string.save_password_label) 1084 .setMessage(com.android.internal.R.string.save_password_message) 1085 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1086 new DialogInterface.OnClickListener() { 1087 public void onClick(DialogInterface dialog, int which) { 1088 resumeMsg.sendToTarget(); 1089 } 1090 }) 1091 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1092 new DialogInterface.OnClickListener() { 1093 public void onClick(DialogInterface dialog, int which) { 1094 remember.sendToTarget(); 1095 } 1096 }) 1097 .setNegativeButton(com.android.internal.R.string.save_password_never, 1098 new DialogInterface.OnClickListener() { 1099 public void onClick(DialogInterface dialog, int which) { 1100 neverRemember.sendToTarget(); 1101 } 1102 }) 1103 .setOnCancelListener(new OnCancelListener() { 1104 public void onCancel(DialogInterface dialog) { 1105 resumeMsg.sendToTarget(); 1106 } 1107 }).show(); 1108 // Return true so that WebViewCore will pause while the dialog is 1109 // up. 1110 rVal = true; 1111 } 1112 return rVal; 1113 } 1114 1115 @Override 1116 public void setScrollBarStyle(int style) { 1117 if (style == View.SCROLLBARS_INSIDE_INSET 1118 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1119 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1120 } else { 1121 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1122 } 1123 super.setScrollBarStyle(style); 1124 } 1125 1126 /** 1127 * Specify whether the horizontal scrollbar has overlay style. 1128 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1129 */ 1130 public void setHorizontalScrollbarOverlay(boolean overlay) { 1131 mOverlayHorizontalScrollbar = overlay; 1132 } 1133 1134 /** 1135 * Specify whether the vertical scrollbar has overlay style. 1136 * @param overlay TRUE if vertical scrollbar should have overlay style. 1137 */ 1138 public void setVerticalScrollbarOverlay(boolean overlay) { 1139 mOverlayVerticalScrollbar = overlay; 1140 } 1141 1142 /** 1143 * Return whether horizontal scrollbar has overlay style 1144 * @return TRUE if horizontal scrollbar has overlay style. 1145 */ 1146 public boolean overlayHorizontalScrollbar() { 1147 return mOverlayHorizontalScrollbar; 1148 } 1149 1150 /** 1151 * Return whether vertical scrollbar has overlay style 1152 * @return TRUE if vertical scrollbar has overlay style. 1153 */ 1154 public boolean overlayVerticalScrollbar() { 1155 return mOverlayVerticalScrollbar; 1156 } 1157 1158 /* 1159 * Return the width of the view where the content of WebView should render 1160 * to. 1161 * Note: this can be called from WebCoreThread. 1162 */ 1163 /* package */ int getViewWidth() { 1164 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1165 return getWidth(); 1166 } else { 1167 return getWidth() - getVerticalScrollbarWidth(); 1168 } 1169 } 1170 1171 /* 1172 * returns the height of the titlebarview (if any). Does not care about 1173 * scrolling 1174 */ 1175 int getTitleHeight() { 1176 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1177 } 1178 1179 /* 1180 * Return the amount of the titlebarview (if any) that is visible 1181 * 1182 * @hide 1183 */ 1184 public int getVisibleTitleHeight() { 1185 return Math.max(getTitleHeight() - mScrollY, 0); 1186 } 1187 1188 /* 1189 * Return the height of the view where the content of WebView should render 1190 * to. Note that this excludes mTitleBar, if there is one. 1191 * Note: this can be called from WebCoreThread. 1192 */ 1193 /* package */ int getViewHeight() { 1194 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1195 } 1196 1197 private int getViewHeightWithTitle() { 1198 int height = getHeight(); 1199 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1200 height -= getHorizontalScrollbarHeight(); 1201 } 1202 return height; 1203 } 1204 1205 /** 1206 * @return The SSL certificate for the main top-level page or null if 1207 * there is no certificate (the site is not secure). 1208 */ 1209 public SslCertificate getCertificate() { 1210 return mCertificate; 1211 } 1212 1213 /** 1214 * Sets the SSL certificate for the main top-level page. 1215 */ 1216 public void setCertificate(SslCertificate certificate) { 1217 if (DebugFlags.WEB_VIEW) { 1218 Log.v(LOGTAG, "setCertificate=" + certificate); 1219 } 1220 // here, the certificate can be null (if the site is not secure) 1221 mCertificate = certificate; 1222 } 1223 1224 //------------------------------------------------------------------------- 1225 // Methods called by activity 1226 //------------------------------------------------------------------------- 1227 1228 /** 1229 * Save the username and password for a particular host in the WebView's 1230 * internal database. 1231 * @param host The host that required the credentials. 1232 * @param username The username for the given host. 1233 * @param password The password for the given host. 1234 */ 1235 public void savePassword(String host, String username, String password) { 1236 mDatabase.setUsernamePassword(host, username, password); 1237 } 1238 1239 /** 1240 * Set the HTTP authentication credentials for a given host and realm. 1241 * 1242 * @param host The host for the credentials. 1243 * @param realm The realm for the credentials. 1244 * @param username The username for the password. If it is null, it means 1245 * password can't be saved. 1246 * @param password The password 1247 */ 1248 public void setHttpAuthUsernamePassword(String host, String realm, 1249 String username, String password) { 1250 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1251 } 1252 1253 /** 1254 * Retrieve the HTTP authentication username and password for a given 1255 * host & realm pair 1256 * 1257 * @param host The host for which the credentials apply. 1258 * @param realm The realm for which the credentials apply. 1259 * @return String[] if found, String[0] is username, which can be null and 1260 * String[1] is password. Return null if it can't find anything. 1261 */ 1262 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1263 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1264 } 1265 1266 /** 1267 * Destroy the internal state of the WebView. This method should be called 1268 * after the WebView has been removed from the view system. No other 1269 * methods may be called on a WebView after destroy. 1270 */ 1271 public void destroy() { 1272 clearTextEntry(); 1273 if (mWebViewCore != null) { 1274 // Set the handlers to null before destroying WebViewCore so no 1275 // more messages will be posted. 1276 mCallbackProxy.setWebViewClient(null); 1277 mCallbackProxy.setWebChromeClient(null); 1278 // Tell WebViewCore to destroy itself 1279 synchronized (this) { 1280 WebViewCore webViewCore = mWebViewCore; 1281 mWebViewCore = null; // prevent using partial webViewCore 1282 webViewCore.destroy(); 1283 } 1284 // Remove any pending messages that might not be serviced yet. 1285 mPrivateHandler.removeCallbacksAndMessages(null); 1286 mCallbackProxy.removeCallbacksAndMessages(null); 1287 // Wake up the WebCore thread just in case it is waiting for a 1288 // javascript dialog. 1289 synchronized (mCallbackProxy) { 1290 mCallbackProxy.notify(); 1291 } 1292 } 1293 if (mNativeClass != 0) { 1294 nativeDestroy(); 1295 mNativeClass = 0; 1296 } 1297 } 1298 1299 /** 1300 * Enables platform notifications of data state and proxy changes. 1301 */ 1302 public static void enablePlatformNotifications() { 1303 Network.enablePlatformNotifications(); 1304 } 1305 1306 /** 1307 * If platform notifications are enabled, this should be called 1308 * from the Activity's onPause() or onStop(). 1309 */ 1310 public static void disablePlatformNotifications() { 1311 Network.disablePlatformNotifications(); 1312 } 1313 1314 /** 1315 * Sets JavaScript engine flags. 1316 * 1317 * @param flags JS engine flags in a String 1318 * 1319 * @hide pending API solidification 1320 */ 1321 public void setJsFlags(String flags) { 1322 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1323 } 1324 1325 /** 1326 * Inform WebView of the network state. This is used to set 1327 * the javascript property window.navigator.isOnline and 1328 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1329 * @param networkUp boolean indicating if network is available 1330 */ 1331 public void setNetworkAvailable(boolean networkUp) { 1332 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1333 networkUp ? 1 : 0, 0); 1334 } 1335 1336 /** 1337 * Inform WebView about the current network type. 1338 * {@hide} 1339 */ 1340 public void setNetworkType(String type, String subtype) { 1341 Map<String, String> map = new HashMap<String, String>(); 1342 map.put("type", type); 1343 map.put("subtype", subtype); 1344 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1345 } 1346 /** 1347 * Save the state of this WebView used in 1348 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1349 * method no longer stores the display data for this WebView. The previous 1350 * behavior could potentially leak files if {@link #restoreState} was never 1351 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1352 * and restoring the display data. 1353 * @param outState The Bundle to store the WebView state. 1354 * @return The same copy of the back/forward list used to save the state. If 1355 * saveState fails, the returned list will be null. 1356 * @see #savePicture 1357 * @see #restorePicture 1358 */ 1359 public WebBackForwardList saveState(Bundle outState) { 1360 if (outState == null) { 1361 return null; 1362 } 1363 // We grab a copy of the back/forward list because a client of WebView 1364 // may have invalidated the history list by calling clearHistory. 1365 WebBackForwardList list = copyBackForwardList(); 1366 final int currentIndex = list.getCurrentIndex(); 1367 final int size = list.getSize(); 1368 // We should fail saving the state if the list is empty or the index is 1369 // not in a valid range. 1370 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1371 return null; 1372 } 1373 outState.putInt("index", currentIndex); 1374 // FIXME: This should just be a byte[][] instead of ArrayList but 1375 // Parcel.java does not have the code to handle multi-dimensional 1376 // arrays. 1377 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1378 for (int i = 0; i < size; i++) { 1379 WebHistoryItem item = list.getItemAtIndex(i); 1380 if (null == item) { 1381 // FIXME: this shouldn't happen 1382 // need to determine how item got set to null 1383 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1384 return null; 1385 } 1386 byte[] data = item.getFlattenedData(); 1387 if (data == null) { 1388 // It would be very odd to not have any data for a given history 1389 // item. And we will fail to rebuild the history list without 1390 // flattened data. 1391 return null; 1392 } 1393 history.add(data); 1394 } 1395 outState.putSerializable("history", history); 1396 if (mCertificate != null) { 1397 outState.putBundle("certificate", 1398 SslCertificate.saveState(mCertificate)); 1399 } 1400 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1401 mZoomManager.saveZoomState(outState); 1402 return list; 1403 } 1404 1405 /** 1406 * Save the current display data to the Bundle given. Used in conjunction 1407 * with {@link #saveState}. 1408 * @param b A Bundle to store the display data. 1409 * @param dest The file to store the serialized picture data. Will be 1410 * overwritten with this WebView's picture data. 1411 * @return True if the picture was successfully saved. 1412 */ 1413 public boolean savePicture(Bundle b, final File dest) { 1414 if (dest == null || b == null) { 1415 return false; 1416 } 1417 final Picture p = capturePicture(); 1418 // Use a temporary file while writing to ensure the destination file 1419 // contains valid data. 1420 final File temp = new File(dest.getPath() + ".writing"); 1421 new Thread(new Runnable() { 1422 public void run() { 1423 FileOutputStream out = null; 1424 try { 1425 out = new FileOutputStream(temp); 1426 p.writeToStream(out); 1427 // Writing the picture succeeded, rename the temporary file 1428 // to the destination. 1429 temp.renameTo(dest); 1430 } catch (Exception e) { 1431 // too late to do anything about it. 1432 } finally { 1433 if (out != null) { 1434 try { 1435 out.close(); 1436 } catch (Exception e) { 1437 // Can't do anything about that 1438 } 1439 } 1440 temp.delete(); 1441 } 1442 } 1443 }).start(); 1444 // now update the bundle 1445 b.putInt("scrollX", mScrollX); 1446 b.putInt("scrollY", mScrollY); 1447 mZoomManager.saveZoomState(b); 1448 return true; 1449 } 1450 1451 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1452 int sx = b.getInt("scrollX", 0); 1453 int sy = b.getInt("scrollY", 0); 1454 1455 mDrawHistory = true; 1456 mHistoryPicture = p; 1457 mScrollX = sx; 1458 mScrollY = sy; 1459 mZoomManager.restoreZoomState(b); 1460 final float scale = mZoomManager.getScale(); 1461 mHistoryWidth = Math.round(p.getWidth() * scale); 1462 mHistoryHeight = Math.round(p.getHeight() * scale); 1463 1464 invalidate(); 1465 } 1466 1467 /** 1468 * Restore the display data that was save in {@link #savePicture}. Used in 1469 * conjunction with {@link #restoreState}. 1470 * @param b A Bundle containing the saved display data. 1471 * @param src The file where the picture data was stored. 1472 * @return True if the picture was successfully restored. 1473 */ 1474 public boolean restorePicture(Bundle b, File src) { 1475 if (src == null || b == null) { 1476 return false; 1477 } 1478 if (!src.exists()) { 1479 return false; 1480 } 1481 try { 1482 final FileInputStream in = new FileInputStream(src); 1483 final Bundle copy = new Bundle(b); 1484 new Thread(new Runnable() { 1485 public void run() { 1486 try { 1487 final Picture p = Picture.createFromStream(in); 1488 if (p != null) { 1489 // Post a runnable on the main thread to update the 1490 // history picture fields. 1491 mPrivateHandler.post(new Runnable() { 1492 public void run() { 1493 restoreHistoryPictureFields(p, copy); 1494 } 1495 }); 1496 } 1497 } finally { 1498 try { 1499 in.close(); 1500 } catch (Exception e) { 1501 // Nothing we can do now. 1502 } 1503 } 1504 } 1505 }).start(); 1506 } catch (FileNotFoundException e){ 1507 e.printStackTrace(); 1508 } 1509 return true; 1510 } 1511 1512 /** 1513 * Restore the state of this WebView from the given map used in 1514 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1515 * be called to restore the state of the WebView before using the object. If 1516 * it is called after the WebView has had a chance to build state (load 1517 * pages, create a back/forward list, etc.) there may be undesirable 1518 * side-effects. Please note that this method no longer restores the 1519 * display data for this WebView. See {@link #savePicture} and {@link 1520 * #restorePicture} for saving and restoring the display data. 1521 * @param inState The incoming Bundle of state. 1522 * @return The restored back/forward list or null if restoreState failed. 1523 * @see #savePicture 1524 * @see #restorePicture 1525 */ 1526 public WebBackForwardList restoreState(Bundle inState) { 1527 WebBackForwardList returnList = null; 1528 if (inState == null) { 1529 return returnList; 1530 } 1531 if (inState.containsKey("index") && inState.containsKey("history")) { 1532 mCertificate = SslCertificate.restoreState( 1533 inState.getBundle("certificate")); 1534 1535 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1536 final int index = inState.getInt("index"); 1537 // We can't use a clone of the list because we need to modify the 1538 // shared copy, so synchronize instead to prevent concurrent 1539 // modifications. 1540 synchronized (list) { 1541 final List<byte[]> history = 1542 (List<byte[]>) inState.getSerializable("history"); 1543 final int size = history.size(); 1544 // Check the index bounds so we don't crash in native code while 1545 // restoring the history index. 1546 if (index < 0 || index >= size) { 1547 return null; 1548 } 1549 for (int i = 0; i < size; i++) { 1550 byte[] data = history.remove(0); 1551 if (data == null) { 1552 // If we somehow have null data, we cannot reconstruct 1553 // the item and thus our history list cannot be rebuilt. 1554 return null; 1555 } 1556 WebHistoryItem item = new WebHistoryItem(data); 1557 list.addHistoryItem(item); 1558 } 1559 // Grab the most recent copy to return to the caller. 1560 returnList = copyBackForwardList(); 1561 // Update the copy to have the correct index. 1562 returnList.setCurrentIndex(index); 1563 } 1564 // Restore private browsing setting. 1565 if (inState.getBoolean("privateBrowsingEnabled")) { 1566 getSettings().setPrivateBrowsingEnabled(true); 1567 } 1568 mZoomManager.restoreZoomState(inState); 1569 // Remove all pending messages because we are restoring previous 1570 // state. 1571 mWebViewCore.removeMessages(); 1572 // Send a restore state message. 1573 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1574 } 1575 return returnList; 1576 } 1577 1578 /** 1579 * Load the given url with the extra headers. 1580 * @param url The url of the resource to load. 1581 * @param extraHeaders The extra headers sent with this url. This should not 1582 * include the common headers like "user-agent". If it does, it 1583 * will be replaced by the intrinsic value of the WebView. 1584 */ 1585 public void loadUrl(String url, Map<String, String> extraHeaders) { 1586 switchOutDrawHistory(); 1587 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1588 arg.mUrl = url; 1589 arg.mExtraHeaders = extraHeaders; 1590 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1591 clearTextEntry(); 1592 } 1593 1594 /** 1595 * Load the given url. 1596 * @param url The url of the resource to load. 1597 */ 1598 public void loadUrl(String url) { 1599 if (url == null) { 1600 return; 1601 } 1602 loadUrl(url, null); 1603 } 1604 1605 /** 1606 * Load the url with postData using "POST" method into the WebView. If url 1607 * is not a network url, it will be loaded with {link 1608 * {@link #loadUrl(String)} instead. 1609 * 1610 * @param url The url of the resource to load. 1611 * @param postData The data will be passed to "POST" request. 1612 */ 1613 public void postUrl(String url, byte[] postData) { 1614 if (URLUtil.isNetworkUrl(url)) { 1615 switchOutDrawHistory(); 1616 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1617 arg.mUrl = url; 1618 arg.mPostData = postData; 1619 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1620 clearTextEntry(); 1621 } else { 1622 loadUrl(url); 1623 } 1624 } 1625 1626 /** 1627 * Load the given data into the WebView. This will load the data into 1628 * WebView using the data: scheme. Content loaded through this mechanism 1629 * does not have the ability to load content from the network. 1630 * @param data A String of data in the given encoding. The date must 1631 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1632 * %27, %3f respectively. 1633 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1634 * @param encoding The encoding of the data. i.e. utf-8, base64 1635 */ 1636 public void loadData(String data, String mimeType, String encoding) { 1637 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1638 } 1639 1640 /** 1641 * Load the given data into the WebView, use the provided URL as the base 1642 * URL for the content. The base URL is the URL that represents the page 1643 * that is loaded through this interface. As such, it is used to resolve any 1644 * relative URLs. The historyUrl is used for the history entry. 1645 * <p> 1646 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1647 * files through "file:///android_asset/" for the sub resources is more 1648 * restricted. If you provide null or empty string as baseUrl, you won't be 1649 * able to access asset files. If the baseUrl is anything other than 1650 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1651 * sub resources. 1652 * 1653 * @param baseUrl Url to resolve relative paths with, if null defaults to 1654 * "about:blank" 1655 * @param data A String of data in the given encoding. 1656 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1657 * defaults to "text/html" 1658 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1659 * @param historyUrl URL to use as the history entry. Can be null. 1660 */ 1661 public void loadDataWithBaseURL(String baseUrl, String data, 1662 String mimeType, String encoding, String historyUrl) { 1663 1664 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1665 loadData(data, mimeType, encoding); 1666 return; 1667 } 1668 switchOutDrawHistory(); 1669 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1670 arg.mBaseUrl = baseUrl; 1671 arg.mData = data; 1672 arg.mMimeType = mimeType; 1673 arg.mEncoding = encoding; 1674 arg.mHistoryUrl = historyUrl; 1675 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1676 clearTextEntry(); 1677 } 1678 1679 /** 1680 * Saves the current view as a web archive. 1681 * 1682 * @param filename The filename where the archive should be placed. 1683 */ 1684 public void saveWebArchive(String filename) { 1685 saveWebArchive(filename, false, null); 1686 } 1687 1688 /* package */ static class SaveWebArchiveMessage { 1689 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1690 mBasename = basename; 1691 mAutoname = autoname; 1692 mCallback = callback; 1693 } 1694 1695 /* package */ final String mBasename; 1696 /* package */ final boolean mAutoname; 1697 /* package */ final ValueCallback<String> mCallback; 1698 /* package */ String mResultFile; 1699 } 1700 1701 /** 1702 * Saves the current view as a web archive. 1703 * 1704 * @param basename The filename where the archive should be placed. 1705 * @param autoname If false, takes basename to be a file. If true, basename 1706 * is assumed to be a directory in which a filename will be 1707 * chosen according to the url of the current page. 1708 * @param callback Called after the web archive has been saved. The 1709 * parameter for onReceiveValue will either be the filename 1710 * under which the file was saved, or null if saving the 1711 * file failed. 1712 */ 1713 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1714 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1715 new SaveWebArchiveMessage(basename, autoname, callback)); 1716 } 1717 1718 /** 1719 * Stop the current load. 1720 */ 1721 public void stopLoading() { 1722 // TODO: should we clear all the messages in the queue before sending 1723 // STOP_LOADING? 1724 switchOutDrawHistory(); 1725 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1726 } 1727 1728 /** 1729 * Reload the current url. 1730 */ 1731 public void reload() { 1732 clearTextEntry(); 1733 switchOutDrawHistory(); 1734 mWebViewCore.sendMessage(EventHub.RELOAD); 1735 } 1736 1737 /** 1738 * Return true if this WebView has a back history item. 1739 * @return True iff this WebView has a back history item. 1740 */ 1741 public boolean canGoBack() { 1742 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1743 synchronized (l) { 1744 if (l.getClearPending()) { 1745 return false; 1746 } else { 1747 return l.getCurrentIndex() > 0; 1748 } 1749 } 1750 } 1751 1752 /** 1753 * Go back in the history of this WebView. 1754 */ 1755 public void goBack() { 1756 goBackOrForward(-1); 1757 } 1758 1759 /** 1760 * Return true if this WebView has a forward history item. 1761 * @return True iff this Webview has a forward history item. 1762 */ 1763 public boolean canGoForward() { 1764 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1765 synchronized (l) { 1766 if (l.getClearPending()) { 1767 return false; 1768 } else { 1769 return l.getCurrentIndex() < l.getSize() - 1; 1770 } 1771 } 1772 } 1773 1774 /** 1775 * Go forward in the history of this WebView. 1776 */ 1777 public void goForward() { 1778 goBackOrForward(1); 1779 } 1780 1781 /** 1782 * Return true if the page can go back or forward the given 1783 * number of steps. 1784 * @param steps The negative or positive number of steps to move the 1785 * history. 1786 */ 1787 public boolean canGoBackOrForward(int steps) { 1788 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1789 synchronized (l) { 1790 if (l.getClearPending()) { 1791 return false; 1792 } else { 1793 int newIndex = l.getCurrentIndex() + steps; 1794 return newIndex >= 0 && newIndex < l.getSize(); 1795 } 1796 } 1797 } 1798 1799 /** 1800 * Go to the history item that is the number of steps away from 1801 * the current item. Steps is negative if backward and positive 1802 * if forward. 1803 * @param steps The number of steps to take back or forward in the back 1804 * forward list. 1805 */ 1806 public void goBackOrForward(int steps) { 1807 goBackOrForward(steps, false); 1808 } 1809 1810 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1811 if (steps != 0) { 1812 clearTextEntry(); 1813 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1814 ignoreSnapshot ? 1 : 0); 1815 } 1816 } 1817 1818 /** 1819 * Returns true if private browsing is enabled in this WebView. 1820 */ 1821 public boolean isPrivateBrowsingEnabled() { 1822 return getSettings().isPrivateBrowsingEnabled(); 1823 } 1824 1825 private void startPrivateBrowsing() { 1826 boolean wasPrivateBrowsingEnabled = isPrivateBrowsingEnabled(); 1827 1828 getSettings().setPrivateBrowsingEnabled(true); 1829 1830 if (!wasPrivateBrowsingEnabled) { 1831 loadUrl("browser:incognito"); 1832 } 1833 } 1834 1835 /** 1836 * Deletes any files that were created as a part of the last private 1837 * browsing session and clears any internal state associated with that 1838 * session. The consequences of calling this method while a private 1839 * browsing session is active are unspecified. 1840 * @param context The same context which was used to create the private 1841 * browsing WebView. 1842 * @return True if the private browsing files were successfully deleted, 1843 * false otherwise. 1844 * @hide pending API council approval. 1845 */ 1846 public static boolean cleanupPrivateBrowsingFiles(Context context) { 1847 return nativeCleanupPrivateBrowsingFiles(context.getFilesDir().getParent()); 1848 } 1849 1850 private static native boolean nativeCleanupPrivateBrowsingFiles(String dataDirectory); 1851 1852 private boolean extendScroll(int y) { 1853 int finalY = mScroller.getFinalY(); 1854 int newY = pinLocY(finalY + y); 1855 if (newY == finalY) return false; 1856 mScroller.setFinalY(newY); 1857 mScroller.extendDuration(computeDuration(0, y)); 1858 return true; 1859 } 1860 1861 /** 1862 * Scroll the contents of the view up by half the view size 1863 * @param top true to jump to the top of the page 1864 * @return true if the page was scrolled 1865 */ 1866 public boolean pageUp(boolean top) { 1867 if (mNativeClass == 0) { 1868 return false; 1869 } 1870 nativeClearCursor(); // start next trackball movement from page edge 1871 if (top) { 1872 // go to the top of the document 1873 return pinScrollTo(mScrollX, 0, true, 0); 1874 } 1875 // Page up 1876 int h = getHeight(); 1877 int y; 1878 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1879 y = -h + PAGE_SCROLL_OVERLAP; 1880 } else { 1881 y = -h / 2; 1882 } 1883 mUserScroll = true; 1884 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1885 : extendScroll(y); 1886 } 1887 1888 /** 1889 * Scroll the contents of the view down by half the page size 1890 * @param bottom true to jump to bottom of page 1891 * @return true if the page was scrolled 1892 */ 1893 public boolean pageDown(boolean bottom) { 1894 if (mNativeClass == 0) { 1895 return false; 1896 } 1897 nativeClearCursor(); // start next trackball movement from page edge 1898 if (bottom) { 1899 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1900 } 1901 // Page down. 1902 int h = getHeight(); 1903 int y; 1904 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1905 y = h - PAGE_SCROLL_OVERLAP; 1906 } else { 1907 y = h / 2; 1908 } 1909 mUserScroll = true; 1910 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1911 : extendScroll(y); 1912 } 1913 1914 /** 1915 * Clear the view so that onDraw() will draw nothing but white background, 1916 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1917 */ 1918 public void clearView() { 1919 mContentWidth = 0; 1920 mContentHeight = 0; 1921 nativeSetBaseLayer(0); 1922 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1923 } 1924 1925 /** 1926 * Return a new picture that captures the current display of the webview. 1927 * This is a copy of the display, and will be unaffected if the webview 1928 * later loads a different URL. 1929 * 1930 * @return a picture containing the current contents of the view. Note this 1931 * picture is of the entire document, and is not restricted to the 1932 * bounds of the view. 1933 */ 1934 public Picture capturePicture() { 1935 Picture result = new Picture(); 1936 nativeCopyBaseContentToPicture(result); 1937 return result; 1938 } 1939 1940 /** 1941 * Return true if the browser is displaying a TextView for text input. 1942 */ 1943 private boolean inEditingMode() { 1944 return mWebTextView != null && mWebTextView.getParent() != null; 1945 } 1946 1947 /** 1948 * Remove the WebTextView. 1949 */ 1950 private void clearTextEntry() { 1951 if (inEditingMode()) { 1952 mWebTextView.remove(); 1953 } else { 1954 // The keyboard may be open with the WebView as the served view 1955 hideSoftKeyboard(); 1956 } 1957 } 1958 1959 /** 1960 * Return the current scale of the WebView 1961 * @return The current scale. 1962 */ 1963 public float getScale() { 1964 return mZoomManager.getScale(); 1965 } 1966 1967 /** 1968 * Set the initial scale for the WebView. 0 means default. If 1969 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1970 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1971 * WebView starts will this value as initial scale. 1972 * 1973 * @param scaleInPercent The initial scale in percent. 1974 */ 1975 public void setInitialScale(int scaleInPercent) { 1976 mZoomManager.setInitialScaleInPercent(scaleInPercent); 1977 } 1978 1979 /** 1980 * Invoke the graphical zoom picker widget for this WebView. This will 1981 * result in the zoom widget appearing on the screen to control the zoom 1982 * level of this WebView. 1983 */ 1984 public void invokeZoomPicker() { 1985 if (!getSettings().supportZoom()) { 1986 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1987 return; 1988 } 1989 clearTextEntry(); 1990 mZoomManager.invokeZoomPicker(); 1991 } 1992 1993 /** 1994 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1995 * is found and the anchor has a non-javascript url, the HitTestResult type 1996 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1997 * anchor does not have a url or if it is a javascript url, the type will 1998 * be UNKNOWN_TYPE and the url has to be retrieved through 1999 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2000 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2001 * the "extra" field. A type of 2002 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2003 * a child node. If a phone number is found, the HitTestResult type is set 2004 * to PHONE_TYPE and the phone number is set in the "extra" field of 2005 * HitTestResult. If a map address is found, the HitTestResult type is set 2006 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2007 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2008 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2009 * HitTestResult type is set to UNKNOWN_TYPE. 2010 */ 2011 public HitTestResult getHitTestResult() { 2012 if (mNativeClass == 0) { 2013 return null; 2014 } 2015 2016 HitTestResult result = new HitTestResult(); 2017 if (nativeHasCursorNode()) { 2018 if (nativeCursorIsTextInput()) { 2019 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2020 } else { 2021 String text = nativeCursorText(); 2022 if (text != null) { 2023 if (text.startsWith(SCHEME_TEL)) { 2024 result.setType(HitTestResult.PHONE_TYPE); 2025 result.setExtra(text.substring(SCHEME_TEL.length())); 2026 } else if (text.startsWith(SCHEME_MAILTO)) { 2027 result.setType(HitTestResult.EMAIL_TYPE); 2028 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2029 } else if (text.startsWith(SCHEME_GEO)) { 2030 result.setType(HitTestResult.GEO_TYPE); 2031 result.setExtra(URLDecoder.decode(text 2032 .substring(SCHEME_GEO.length()))); 2033 } else if (nativeCursorIsAnchor()) { 2034 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2035 result.setExtra(text); 2036 } 2037 } 2038 } 2039 } 2040 int type = result.getType(); 2041 if (type == HitTestResult.UNKNOWN_TYPE 2042 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2043 // Now check to see if it is an image. 2044 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2045 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2046 String text = nativeImageURI(contentX, contentY); 2047 if (text != null) { 2048 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2049 HitTestResult.IMAGE_TYPE : 2050 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2051 result.setExtra(text); 2052 } 2053 } 2054 return result; 2055 } 2056 2057 // Called by JNI when the DOM has changed the focus. Clear the focus so 2058 // that new keys will go to the newly focused field 2059 private void domChangedFocus() { 2060 if (inEditingMode()) { 2061 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2062 } 2063 } 2064 /** 2065 * Request the href of an anchor element due to getFocusNodePath returning 2066 * "href." If hrefMsg is null, this method returns immediately and does not 2067 * dispatch hrefMsg to its target. 2068 * 2069 * @param hrefMsg This message will be dispatched with the result of the 2070 * request as the data member with "url" as key. The result can 2071 * be null. 2072 */ 2073 // FIXME: API change required to change the name of this function. We now 2074 // look at the cursor node, and not the focus node. Also, what is 2075 // getFocusNodePath? 2076 public void requestFocusNodeHref(Message hrefMsg) { 2077 if (hrefMsg == null || mNativeClass == 0) { 2078 return; 2079 } 2080 if (nativeCursorIsAnchor()) { 2081 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2082 nativeCursorFramePointer(), nativeCursorNodePointer(), 2083 hrefMsg); 2084 } 2085 } 2086 2087 /** 2088 * Request the url of the image last touched by the user. msg will be sent 2089 * to its target with a String representing the url as its object. 2090 * 2091 * @param msg This message will be dispatched with the result of the request 2092 * as the data member with "url" as key. The result can be null. 2093 */ 2094 public void requestImageRef(Message msg) { 2095 if (0 == mNativeClass) return; // client isn't initialized 2096 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2097 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2098 String ref = nativeImageURI(contentX, contentY); 2099 Bundle data = msg.getData(); 2100 data.putString("url", ref); 2101 msg.setData(data); 2102 msg.sendToTarget(); 2103 } 2104 2105 static int pinLoc(int x, int viewMax, int docMax) { 2106// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2107 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2108 // pin the short document to the top/left of the screen 2109 x = 0; 2110// Log.d(LOGTAG, "--- center " + x); 2111 } else if (x < 0) { 2112 x = 0; 2113// Log.d(LOGTAG, "--- zero"); 2114 } else if (x + viewMax > docMax) { 2115 x = docMax - viewMax; 2116// Log.d(LOGTAG, "--- pin " + x); 2117 } 2118 return x; 2119 } 2120 2121 // Expects x in view coordinates 2122 int pinLocX(int x) { 2123 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 2124 } 2125 2126 // Expects y in view coordinates 2127 int pinLocY(int y) { 2128 return pinLoc(y, getViewHeightWithTitle(), 2129 computeVerticalScrollRange() + getTitleHeight()); 2130 } 2131 2132 /** 2133 * A title bar which is embedded in this WebView, and scrolls along with it 2134 * vertically, but not horizontally. 2135 */ 2136 private View mTitleBar; 2137 2138 /** 2139 * Since we draw the title bar ourselves, we removed the shadow from the 2140 * browser's activity. We do want a shadow at the bottom of the title bar, 2141 * or at the top of the screen if the title bar is not visible. This 2142 * drawable serves that purpose. 2143 */ 2144 private Drawable mTitleShadow; 2145 2146 /** 2147 * Add or remove a title bar to be embedded into the WebView, and scroll 2148 * along with it vertically, while remaining in view horizontally. Pass 2149 * null to remove the title bar from the WebView, and return to drawing 2150 * the WebView normally without translating to account for the title bar. 2151 * @hide 2152 */ 2153 public void setEmbeddedTitleBar(View v) { 2154 if (null == v) { 2155 // If one of our callbacks is holding onto the titlebar to replace 2156 // it when its ActionMode ends, remove it. 2157 if (mSelectCallback != null) { 2158 mSelectCallback.setTitleBar(null); 2159 } else if (mFindCallback != null) { 2160 mFindCallback.setTitleBar(null); 2161 } 2162 } 2163 if (mTitleBar == v) return; 2164 if (mTitleBar != null) { 2165 removeView(mTitleBar); 2166 } 2167 if (null != v) { 2168 addView(v, new AbsoluteLayout.LayoutParams( 2169 ViewGroup.LayoutParams.MATCH_PARENT, 2170 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2171 if (mTitleShadow == null) { 2172 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 2173 com.android.internal.R.drawable.title_bar_shadow); 2174 } 2175 } 2176 mTitleBar = v; 2177 } 2178 2179 /** 2180 * Given a distance in view space, convert it to content space. Note: this 2181 * does not reflect translation, just scaling, so this should not be called 2182 * with coordinates, but should be called for dimensions like width or 2183 * height. 2184 */ 2185 private int viewToContentDimension(int d) { 2186 return Math.round(d * mZoomManager.getInvScale()); 2187 } 2188 2189 /** 2190 * Given an x coordinate in view space, convert it to content space. Also 2191 * may be used for absolute heights (such as for the WebTextView's 2192 * textSize, which is unaffected by the height of the title bar). 2193 */ 2194 /*package*/ int viewToContentX(int x) { 2195 return viewToContentDimension(x); 2196 } 2197 2198 /** 2199 * Given a y coordinate in view space, convert it to content space. 2200 * Takes into account the height of the title bar if there is one 2201 * embedded into the WebView. 2202 */ 2203 /*package*/ int viewToContentY(int y) { 2204 return viewToContentDimension(y - getTitleHeight()); 2205 } 2206 2207 /** 2208 * Given a x coordinate in view space, convert it to content space. 2209 * Returns the result as a float. 2210 */ 2211 private float viewToContentXf(int x) { 2212 return x * mZoomManager.getInvScale(); 2213 } 2214 2215 /** 2216 * Given a y coordinate in view space, convert it to content space. 2217 * Takes into account the height of the title bar if there is one 2218 * embedded into the WebView. Returns the result as a float. 2219 */ 2220 private float viewToContentYf(int y) { 2221 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2222 } 2223 2224 /** 2225 * Given a distance in content space, convert it to view space. Note: this 2226 * does not reflect translation, just scaling, so this should not be called 2227 * with coordinates, but should be called for dimensions like width or 2228 * height. 2229 */ 2230 /*package*/ int contentToViewDimension(int d) { 2231 return Math.round(d * mZoomManager.getScale()); 2232 } 2233 2234 /** 2235 * Given an x coordinate in content space, convert it to view 2236 * space. 2237 */ 2238 /*package*/ int contentToViewX(int x) { 2239 return contentToViewDimension(x); 2240 } 2241 2242 /** 2243 * Given a y coordinate in content space, convert it to view 2244 * space. Takes into account the height of the title bar. 2245 */ 2246 /*package*/ int contentToViewY(int y) { 2247 return contentToViewDimension(y) + getTitleHeight(); 2248 } 2249 2250 private Rect contentToViewRect(Rect x) { 2251 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2252 contentToViewX(x.right), contentToViewY(x.bottom)); 2253 } 2254 2255 /* To invalidate a rectangle in content coordinates, we need to transform 2256 the rect into view coordinates, so we can then call invalidate(...). 2257 2258 Normally, we would just call contentToView[XY](...), which eventually 2259 calls Math.round(coordinate * mActualScale). However, for invalidates, 2260 we need to account for the slop that occurs with antialiasing. To 2261 address that, we are a little more liberal in the size of the rect that 2262 we invalidate. 2263 2264 This liberal calculation calls floor() for the top/left, and ceil() for 2265 the bottom/right coordinates. This catches the possible extra pixels of 2266 antialiasing that we might have missed with just round(). 2267 */ 2268 2269 // Called by JNI to invalidate the View, given rectangle coordinates in 2270 // content space 2271 private void viewInvalidate(int l, int t, int r, int b) { 2272 final float scale = mZoomManager.getScale(); 2273 final int dy = getTitleHeight(); 2274 invalidate((int)Math.floor(l * scale), 2275 (int)Math.floor(t * scale) + dy, 2276 (int)Math.ceil(r * scale), 2277 (int)Math.ceil(b * scale) + dy); 2278 } 2279 2280 // Called by JNI to invalidate the View after a delay, given rectangle 2281 // coordinates in content space 2282 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2283 final float scale = mZoomManager.getScale(); 2284 final int dy = getTitleHeight(); 2285 postInvalidateDelayed(delay, 2286 (int)Math.floor(l * scale), 2287 (int)Math.floor(t * scale) + dy, 2288 (int)Math.ceil(r * scale), 2289 (int)Math.ceil(b * scale) + dy); 2290 } 2291 2292 private void invalidateContentRect(Rect r) { 2293 viewInvalidate(r.left, r.top, r.right, r.bottom); 2294 } 2295 2296 // stop the scroll animation, and don't let a subsequent fling add 2297 // to the existing velocity 2298 private void abortAnimation() { 2299 mScroller.abortAnimation(); 2300 mLastVelocity = 0; 2301 } 2302 2303 /* call from webcoreview.draw(), so we're still executing in the UI thread 2304 */ 2305 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2306 2307 // premature data from webkit, ignore 2308 if ((w | h) == 0) { 2309 return; 2310 } 2311 2312 // don't abort a scroll animation if we didn't change anything 2313 if (mContentWidth != w || mContentHeight != h) { 2314 // record new dimensions 2315 mContentWidth = w; 2316 mContentHeight = h; 2317 // If history Picture is drawn, don't update scroll. They will be 2318 // updated when we get out of that mode. 2319 if (!mDrawHistory) { 2320 // repin our scroll, taking into account the new content size 2321 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2322 if (!mScroller.isFinished()) { 2323 // We are in the middle of a scroll. Repin the final scroll 2324 // position. 2325 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2326 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2327 } 2328 } 2329 } 2330 contentSizeChanged(updateLayout); 2331 } 2332 2333 // Used to avoid sending many visible rect messages. 2334 private Rect mLastVisibleRectSent; 2335 private Rect mLastGlobalRect; 2336 2337 Rect sendOurVisibleRect() { 2338 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2339 2340 Rect rect = new Rect(); 2341 calcOurContentVisibleRect(rect); 2342 // Rect.equals() checks for null input. 2343 if (!rect.equals(mLastVisibleRectSent)) { 2344 Point pos = new Point(rect.left, rect.top); 2345 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2346 nativeMoveGeneration(), 0, pos); 2347 mLastVisibleRectSent = rect; 2348 } 2349 Rect globalRect = new Rect(); 2350 if (getGlobalVisibleRect(globalRect) 2351 && !globalRect.equals(mLastGlobalRect)) { 2352 if (DebugFlags.WEB_VIEW) { 2353 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2354 + globalRect.top + ",r=" + globalRect.right + ",b=" 2355 + globalRect.bottom); 2356 } 2357 // TODO: the global offset is only used by windowRect() 2358 // in ChromeClientAndroid ; other clients such as touch 2359 // and mouse events could return view + screen relative points. 2360 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2361 mLastGlobalRect = globalRect; 2362 } 2363 return rect; 2364 } 2365 2366 // Sets r to be the visible rectangle of our webview in view coordinates 2367 private void calcOurVisibleRect(Rect r) { 2368 Point p = new Point(); 2369 getGlobalVisibleRect(r, p); 2370 r.offset(-p.x, -p.y); 2371 } 2372 2373 // Sets r to be our visible rectangle in content coordinates 2374 private void calcOurContentVisibleRect(Rect r) { 2375 calcOurVisibleRect(r); 2376 // pin the rect to the bounds of the content 2377 r.left = Math.max(viewToContentX(r.left), 0); 2378 // viewToContentY will remove the total height of the title bar. Add 2379 // the visible height back in to account for the fact that if the title 2380 // bar is partially visible, the part of the visible rect which is 2381 // displaying our content is displaced by that amount. 2382 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2383 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2384 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2385 } 2386 2387 // Sets r to be our visible rectangle in content coordinates. We use this 2388 // method on the native side to compute the position of the fixed layers. 2389 // Uses floating coordinates (necessary to correctly place elements when 2390 // the scale factor is not 1) 2391 private void calcOurContentVisibleRectF(RectF r) { 2392 Rect ri = new Rect(0,0,0,0); 2393 calcOurVisibleRect(ri); 2394 // pin the rect to the bounds of the content 2395 r.left = Math.max(viewToContentXf(ri.left), 0.0f); 2396 // viewToContentY will remove the total height of the title bar. Add 2397 // the visible height back in to account for the fact that if the title 2398 // bar is partially visible, the part of the visible rect which is 2399 // displaying our content is displaced by that amount. 2400 r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f); 2401 r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth); 2402 r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight); 2403 } 2404 2405 static class ViewSizeData { 2406 int mWidth; 2407 int mHeight; 2408 int mTextWrapWidth; 2409 int mAnchorX; 2410 int mAnchorY; 2411 float mScale; 2412 boolean mIgnoreHeight; 2413 } 2414 2415 /** 2416 * Compute unzoomed width and height, and if they differ from the last 2417 * values we sent, send them to webkit (to be used as new viewport) 2418 * 2419 * @param force ensures that the message is sent to webkit even if the width 2420 * or height has not changed since the last message 2421 * 2422 * @return true if new values were sent 2423 */ 2424 boolean sendViewSizeZoom(boolean force) { 2425 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2426 2427 int viewWidth = getViewWidth(); 2428 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2429 int newHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2430 /* 2431 * Because the native side may have already done a layout before the 2432 * View system was able to measure us, we have to send a height of 0 to 2433 * remove excess whitespace when we grow our width. This will trigger a 2434 * layout and a change in content size. This content size change will 2435 * mean that contentSizeChanged will either call this method directly or 2436 * indirectly from onSizeChanged. 2437 */ 2438 if (newWidth > mLastWidthSent && mWrapContent) { 2439 newHeight = 0; 2440 } 2441 // Avoid sending another message if the dimensions have not changed. 2442 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force) { 2443 ViewSizeData data = new ViewSizeData(); 2444 data.mWidth = newWidth; 2445 data.mHeight = newHeight; 2446 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2447 data.mScale = mZoomManager.getScale(); 2448 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2449 && !mHeightCanMeasure; 2450 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2451 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2452 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2453 mLastWidthSent = newWidth; 2454 mLastHeightSent = newHeight; 2455 mZoomManager.clearDocumentAnchor(); 2456 return true; 2457 } 2458 return false; 2459 } 2460 2461 @Override 2462 protected int computeHorizontalScrollRange() { 2463 if (mDrawHistory) { 2464 return mHistoryWidth; 2465 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2466 && !mZoomManager.canZoomOut()) { 2467 // only honor the scrollbar mode when it is at minimum zoom level 2468 return computeHorizontalScrollExtent(); 2469 } else { 2470 // to avoid rounding error caused unnecessary scrollbar, use floor 2471 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2472 } 2473 } 2474 2475 @Override 2476 protected int computeVerticalScrollRange() { 2477 if (mDrawHistory) { 2478 return mHistoryHeight; 2479 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2480 && !mZoomManager.canZoomOut()) { 2481 // only honor the scrollbar mode when it is at minimum zoom level 2482 return computeVerticalScrollExtent(); 2483 } else { 2484 // to avoid rounding error caused unnecessary scrollbar, use floor 2485 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2486 } 2487 } 2488 2489 @Override 2490 protected int computeVerticalScrollOffset() { 2491 return Math.max(mScrollY - getTitleHeight(), 0); 2492 } 2493 2494 @Override 2495 protected int computeVerticalScrollExtent() { 2496 return getViewHeight(); 2497 } 2498 2499 /** @hide */ 2500 @Override 2501 protected void onDrawVerticalScrollBar(Canvas canvas, 2502 Drawable scrollBar, 2503 int l, int t, int r, int b) { 2504 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2505 scrollBar.draw(canvas); 2506 } 2507 2508 /** 2509 * Get the url for the current page. This is not always the same as the url 2510 * passed to WebViewClient.onPageStarted because although the load for 2511 * that url has begun, the current page may not have changed. 2512 * @return The url for the current page. 2513 */ 2514 public String getUrl() { 2515 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2516 return h != null ? h.getUrl() : null; 2517 } 2518 2519 /** 2520 * Get the original url for the current page. This is not always the same 2521 * as the url passed to WebViewClient.onPageStarted because although the 2522 * load for that url has begun, the current page may not have changed. 2523 * Also, there may have been redirects resulting in a different url to that 2524 * originally requested. 2525 * @return The url that was originally requested for the current page. 2526 */ 2527 public String getOriginalUrl() { 2528 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2529 return h != null ? h.getOriginalUrl() : null; 2530 } 2531 2532 /** 2533 * Get the title for the current page. This is the title of the current page 2534 * until WebViewClient.onReceivedTitle is called. 2535 * @return The title for the current page. 2536 */ 2537 public String getTitle() { 2538 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2539 return h != null ? h.getTitle() : null; 2540 } 2541 2542 /** 2543 * Get the favicon for the current page. This is the favicon of the current 2544 * page until WebViewClient.onReceivedIcon is called. 2545 * @return The favicon for the current page. 2546 */ 2547 public Bitmap getFavicon() { 2548 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2549 return h != null ? h.getFavicon() : null; 2550 } 2551 2552 /** 2553 * Get the touch icon url for the apple-touch-icon <link> element, or 2554 * a URL on this site's server pointing to the standard location of a 2555 * touch icon. 2556 * @hide 2557 */ 2558 public String getTouchIconUrl() { 2559 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2560 return h != null ? h.getTouchIconUrl() : null; 2561 } 2562 2563 /** 2564 * Get the progress for the current page. 2565 * @return The progress for the current page between 0 and 100. 2566 */ 2567 public int getProgress() { 2568 return mCallbackProxy.getProgress(); 2569 } 2570 2571 /** 2572 * @return the height of the HTML content. 2573 */ 2574 public int getContentHeight() { 2575 return mContentHeight; 2576 } 2577 2578 /** 2579 * @return the width of the HTML content. 2580 * @hide 2581 */ 2582 public int getContentWidth() { 2583 return mContentWidth; 2584 } 2585 2586 /** 2587 * Pause all layout, parsing, and javascript timers for all webviews. This 2588 * is a global requests, not restricted to just this webview. This can be 2589 * useful if the application has been paused. 2590 */ 2591 public void pauseTimers() { 2592 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2593 } 2594 2595 /** 2596 * Resume all layout, parsing, and javascript timers for all webviews. 2597 * This will resume dispatching all timers. 2598 */ 2599 public void resumeTimers() { 2600 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2601 } 2602 2603 /** 2604 * Call this to pause any extra processing associated with this view and 2605 * its associated DOM/plugins/javascript/etc. For example, if the view is 2606 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2607 * network traffic. When the view is again "active", call onResume(). 2608 * 2609 * Note that this differs from pauseTimers(), which affects all views/DOMs 2610 * @hide 2611 */ 2612 public void onPause() { 2613 if (!mIsPaused) { 2614 mIsPaused = true; 2615 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2616 } 2617 } 2618 2619 /** 2620 * Call this to balanace a previous call to onPause() 2621 * @hide 2622 */ 2623 public void onResume() { 2624 if (mIsPaused) { 2625 mIsPaused = false; 2626 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2627 } 2628 } 2629 2630 /** 2631 * Returns true if the view is paused, meaning onPause() was called. Calling 2632 * onResume() sets the paused state back to false. 2633 * @hide 2634 */ 2635 public boolean isPaused() { 2636 return mIsPaused; 2637 } 2638 2639 /** 2640 * Call this to inform the view that memory is low so that it can 2641 * free any available memory. 2642 */ 2643 public void freeMemory() { 2644 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2645 } 2646 2647 /** 2648 * Clear the resource cache. Note that the cache is per-application, so 2649 * this will clear the cache for all WebViews used. 2650 * 2651 * @param includeDiskFiles If false, only the RAM cache is cleared. 2652 */ 2653 public void clearCache(boolean includeDiskFiles) { 2654 // Note: this really needs to be a static method as it clears cache for all 2655 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2656 // we can't make this static. 2657 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2658 includeDiskFiles ? 1 : 0, 0); 2659 } 2660 2661 /** 2662 * Make sure that clearing the form data removes the adapter from the 2663 * currently focused textfield if there is one. 2664 */ 2665 public void clearFormData() { 2666 if (inEditingMode()) { 2667 AutoCompleteAdapter adapter = null; 2668 mWebTextView.setAdapterCustom(adapter); 2669 } 2670 } 2671 2672 /** 2673 * Tell the WebView to clear its internal back/forward list. 2674 */ 2675 public void clearHistory() { 2676 mCallbackProxy.getBackForwardList().setClearPending(); 2677 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2678 } 2679 2680 /** 2681 * Clear the SSL preferences table stored in response to proceeding with SSL 2682 * certificate errors. 2683 */ 2684 public void clearSslPreferences() { 2685 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2686 } 2687 2688 /** 2689 * Return the WebBackForwardList for this WebView. This contains the 2690 * back/forward list for use in querying each item in the history stack. 2691 * This is a copy of the private WebBackForwardList so it contains only a 2692 * snapshot of the current state. Multiple calls to this method may return 2693 * different objects. The object returned from this method will not be 2694 * updated to reflect any new state. 2695 */ 2696 public WebBackForwardList copyBackForwardList() { 2697 return mCallbackProxy.getBackForwardList().clone(); 2698 } 2699 2700 /* 2701 * Highlight and scroll to the next occurance of String in findAll. 2702 * Wraps the page infinitely, and scrolls. Must be called after 2703 * calling findAll. 2704 * 2705 * @param forward Direction to search. 2706 */ 2707 public void findNext(boolean forward) { 2708 if (0 == mNativeClass) return; // client isn't initialized 2709 nativeFindNext(forward); 2710 } 2711 2712 /* 2713 * Find all instances of find on the page and highlight them. 2714 * @param find String to find. 2715 * @return int The number of occurances of the String "find" 2716 * that were found. 2717 */ 2718 public int findAll(String find) { 2719 if (0 == mNativeClass) return 0; // client isn't initialized 2720 int result = find != null ? nativeFindAll(find.toLowerCase(), 2721 find.toUpperCase()) : 0; 2722 invalidate(); 2723 mLastFind = find; 2724 return result; 2725 } 2726 2727 /** 2728 * Start an ActionMode for finding text in this WebView. 2729 * @param text If non-null, will be the initial text to search for. 2730 * Otherwise, the last String searched for in this WebView will 2731 * be used to start. 2732 */ 2733 public void showFindDialog(String text) { 2734 mFindCallback = new FindActionModeCallback(mContext); 2735 setFindIsUp(true); 2736 mFindCallback.setWebView(this); 2737 View titleBar = mTitleBar; 2738 // We do not want to show the embedded title bar during find or 2739 // select, but keep track of it so that it can be replaced when the 2740 // mode is exited. 2741 setEmbeddedTitleBar(null); 2742 mFindCallback.setTitleBar(titleBar); 2743 startActionMode(mFindCallback); 2744 if (text == null) { 2745 text = mLastFind; 2746 } 2747 if (text != null) { 2748 mFindCallback.setText(text); 2749 } 2750 } 2751 2752 /** 2753 * Keep track of the find callback so that we can remove its titlebar if 2754 * necessary. 2755 */ 2756 private FindActionModeCallback mFindCallback; 2757 2758 /** 2759 * Toggle whether the find dialog is showing, for both native and Java. 2760 */ 2761 private void setFindIsUp(boolean isUp) { 2762 mFindIsUp = isUp; 2763 if (0 == mNativeClass) return; // client isn't initialized 2764 nativeSetFindIsUp(isUp); 2765 } 2766 2767 /** 2768 * Return the index of the currently highlighted match. 2769 */ 2770 int findIndex() { 2771 if (0 == mNativeClass) return -1; 2772 return nativeFindIndex(); 2773 } 2774 2775 // Used to know whether the find dialog is open. Affects whether 2776 // or not we draw the highlights for matches. 2777 private boolean mFindIsUp; 2778 2779 // Keep track of the last string sent, so we can search again when find is 2780 // reopened. 2781 private String mLastFind; 2782 2783 /** 2784 * Return the first substring consisting of the address of a physical 2785 * location. Currently, only addresses in the United States are detected, 2786 * and consist of: 2787 * - a house number 2788 * - a street name 2789 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2790 * - a city name 2791 * - a state or territory, either spelled out or two-letter abbr. 2792 * - an optional 5 digit or 9 digit zip code. 2793 * 2794 * All names must be correctly capitalized, and the zip code, if present, 2795 * must be valid for the state. The street type must be a standard USPS 2796 * spelling or abbreviation. The state or territory must also be spelled 2797 * or abbreviated using USPS standards. The house number may not exceed 2798 * five digits. 2799 * @param addr The string to search for addresses. 2800 * 2801 * @return the address, or if no address is found, return null. 2802 */ 2803 public static String findAddress(String addr) { 2804 return findAddress(addr, false); 2805 } 2806 2807 /** 2808 * @hide 2809 * Return the first substring consisting of the address of a physical 2810 * location. Currently, only addresses in the United States are detected, 2811 * and consist of: 2812 * - a house number 2813 * - a street name 2814 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2815 * - a city name 2816 * - a state or territory, either spelled out or two-letter abbr. 2817 * - an optional 5 digit or 9 digit zip code. 2818 * 2819 * Names are optionally capitalized, and the zip code, if present, 2820 * must be valid for the state. The street type must be a standard USPS 2821 * spelling or abbreviation. The state or territory must also be spelled 2822 * or abbreviated using USPS standards. The house number may not exceed 2823 * five digits. 2824 * @param addr The string to search for addresses. 2825 * @param caseInsensitive addr Set to true to make search ignore case. 2826 * 2827 * @return the address, or if no address is found, return null. 2828 */ 2829 public static String findAddress(String addr, boolean caseInsensitive) { 2830 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2831 } 2832 2833 /* 2834 * Clear the highlighting surrounding text matches created by findAll. 2835 */ 2836 public void clearMatches() { 2837 if (mNativeClass == 0) 2838 return; 2839 nativeSetFindIsEmpty(); 2840 invalidate(); 2841 } 2842 2843 /** 2844 * Called when the find ActionMode ends. 2845 */ 2846 void notifyFindDialogDismissed() { 2847 mFindCallback = null; 2848 if (mWebViewCore == null) { 2849 return; 2850 } 2851 clearMatches(); 2852 setFindIsUp(false); 2853 // Now that the dialog has been removed, ensure that we scroll to a 2854 // location that is not beyond the end of the page. 2855 pinScrollTo(mScrollX, mScrollY, false, 0); 2856 invalidate(); 2857 } 2858 2859 /** 2860 * Query the document to see if it contains any image references. The 2861 * message object will be dispatched with arg1 being set to 1 if images 2862 * were found and 0 if the document does not reference any images. 2863 * @param response The message that will be dispatched with the result. 2864 */ 2865 public void documentHasImages(Message response) { 2866 if (response == null) { 2867 return; 2868 } 2869 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2870 } 2871 2872 /** 2873 * Request the scroller to abort any ongoing animation 2874 * 2875 * @hide 2876 */ 2877 public void stopScroll() { 2878 mScroller.forceFinished(true); 2879 mLastVelocity = 0; 2880 } 2881 2882 @Override 2883 public void computeScroll() { 2884 if (mScroller.computeScrollOffset()) { 2885 int oldX = mScrollX; 2886 int oldY = mScrollY; 2887 mScrollX = mScroller.getCurrX(); 2888 mScrollY = mScroller.getCurrY(); 2889 postInvalidate(); // So we draw again 2890 if (oldX != mScrollX || oldY != mScrollY) { 2891 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2892 } else { 2893 abortAnimation(); 2894 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 2895 WebViewCore.resumePriority(); 2896 WebViewCore.resumeUpdatePicture(mWebViewCore); 2897 } 2898 } else { 2899 super.computeScroll(); 2900 } 2901 } 2902 2903 private static int computeDuration(int dx, int dy) { 2904 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2905 int duration = distance * 1000 / STD_SPEED; 2906 return Math.min(duration, MAX_DURATION); 2907 } 2908 2909 // helper to pin the scrollBy parameters (already in view coordinates) 2910 // returns true if the scroll was changed 2911 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2912 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2913 } 2914 // helper to pin the scrollTo parameters (already in view coordinates) 2915 // returns true if the scroll was changed 2916 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2917 x = pinLocX(x); 2918 y = pinLocY(y); 2919 int dx = x - mScrollX; 2920 int dy = y - mScrollY; 2921 2922 if ((dx | dy) == 0) { 2923 return false; 2924 } 2925 if (animate) { 2926 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2927 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2928 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2929 awakenScrollBars(mScroller.getDuration()); 2930 invalidate(); 2931 } else { 2932 abortAnimation(); // just in case 2933 scrollTo(x, y); 2934 } 2935 return true; 2936 } 2937 2938 // Scale from content to view coordinates, and pin. 2939 // Also called by jni webview.cpp 2940 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2941 if (mDrawHistory) { 2942 // disallow WebView to change the scroll position as History Picture 2943 // is used in the view system. 2944 // TODO: as we switchOutDrawHistory when trackball or navigation 2945 // keys are hit, this should be safe. Right? 2946 return false; 2947 } 2948 cx = contentToViewDimension(cx); 2949 cy = contentToViewDimension(cy); 2950 if (mHeightCanMeasure) { 2951 // move our visible rect according to scroll request 2952 if (cy != 0) { 2953 Rect tempRect = new Rect(); 2954 calcOurVisibleRect(tempRect); 2955 tempRect.offset(cx, cy); 2956 requestRectangleOnScreen(tempRect); 2957 } 2958 // FIXME: We scroll horizontally no matter what because currently 2959 // ScrollView and ListView will not scroll horizontally. 2960 // FIXME: Why do we only scroll horizontally if there is no 2961 // vertical scroll? 2962// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2963 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2964 } else { 2965 return pinScrollBy(cx, cy, animate, 0); 2966 } 2967 } 2968 2969 /** 2970 * Called by CallbackProxy when the page starts loading. 2971 * @param url The URL of the page which has started loading. 2972 */ 2973 /* package */ void onPageStarted(String url) { 2974 // every time we start a new page, we want to reset the 2975 // WebView certificate: if the new site is secure, we 2976 // will reload it and get a new certificate set; 2977 // if the new site is not secure, the certificate must be 2978 // null, and that will be the case 2979 setCertificate(null); 2980 2981 // reset the flag since we set to true in if need after 2982 // loading is see onPageFinished(Url) 2983 mAccessibilityScriptInjected = false; 2984 } 2985 2986 /** 2987 * Called by CallbackProxy when the page finishes loading. 2988 * @param url The URL of the page which has finished loading. 2989 */ 2990 /* package */ void onPageFinished(String url) { 2991 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2992 // If the user is now on a different page, or has scrolled the page 2993 // past the point where the title bar is offscreen, ignore the 2994 // scroll request. 2995 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2996 && mScrollX == 0 && mScrollY == 0) { 2997 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2998 SLIDE_TITLE_DURATION); 2999 } 3000 mPageThatNeedsToSlideTitleBarOffScreen = null; 3001 } 3002 3003 injectAccessibilityForUrl(url); 3004 } 3005 3006 /** 3007 * This method injects accessibility in the loaded document if accessibility 3008 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3009 * If no URL specific script is found or JavaScript is disabled we fallback to 3010 * the default {@link AccessibilityInjector} implementation. 3011 * </p> 3012 * If the URL has the "axs" paramter set to 1 it has already done the 3013 * script injection so we do nothing. If the parameter is set to 0 3014 * the URL opts out accessibility script injection so we fall back to 3015 * the default {@link AccessibilityInjector}. 3016 * </p> 3017 * Note: If the user has not opted-in the accessibility script injection no scripts 3018 * are injected rather the default {@link AccessibilityInjector} implementation 3019 * is used. 3020 * 3021 * @param url The URL loaded by this {@link WebView}. 3022 */ 3023 private void injectAccessibilityForUrl(String url) { 3024 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3025 3026 if (!accessibilityManager.isEnabled()) { 3027 // it is possible that accessibility was turned off between reloads 3028 ensureAccessibilityScriptInjectorInstance(false); 3029 return; 3030 } 3031 3032 if (!getSettings().getJavaScriptEnabled()) { 3033 // no JS so we fallback to the basic buil-in support 3034 ensureAccessibilityScriptInjectorInstance(true); 3035 return; 3036 } 3037 3038 // check the URL "axs" parameter to choose appropriate action 3039 int axsParameterValue = getAxsUrlParameterValue(url); 3040 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3041 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3042 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3043 if (onDeviceScriptInjectionEnabled) { 3044 ensureAccessibilityScriptInjectorInstance(false); 3045 // neither script injected nor script injection opted out => we inject 3046 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3047 // TODO: Set this flag after successfull script injection. Maybe upon injection 3048 // the chooser should update the meta tag and we check it to declare success 3049 mAccessibilityScriptInjected = true; 3050 } else { 3051 // injection disabled so we fallback to the basic built-in support 3052 ensureAccessibilityScriptInjectorInstance(true); 3053 } 3054 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3055 // injection opted out so we fallback to the basic buil-in support 3056 ensureAccessibilityScriptInjectorInstance(true); 3057 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3058 ensureAccessibilityScriptInjectorInstance(false); 3059 // the URL provides accessibility but we still need to add our generic script 3060 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3061 } else { 3062 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3063 } 3064 } 3065 3066 /** 3067 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3068 * 3069 * @param present True to ensure an insance, false to ensure no instance. 3070 */ 3071 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3072 if (present && mAccessibilityInjector == null) { 3073 mAccessibilityInjector = new AccessibilityInjector(this); 3074 } else { 3075 mAccessibilityInjector = null; 3076 } 3077 } 3078 3079 /** 3080 * Gets the "axs" URL parameter value. 3081 * 3082 * @param url A url to fetch the paramter from. 3083 * @return The parameter value if such, -1 otherwise. 3084 */ 3085 private int getAxsUrlParameterValue(String url) { 3086 if (mMatchAxsUrlParameterPattern == null) { 3087 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3088 } 3089 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3090 if (matcher.find()) { 3091 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3092 return Integer.parseInt(keyValuePair.split("=")[1]); 3093 } 3094 return -1; 3095 } 3096 3097 /** 3098 * The URL of a page that sent a message to scroll the title bar off screen. 3099 * 3100 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3101 * title bar off the screen. Sometimes, the scroll position is set before 3102 * the page finishes loading. Rather than scrolling while the page is still 3103 * loading, keep track of the URL and new scroll position so we can perform 3104 * the scroll once the page finishes loading. 3105 */ 3106 private String mPageThatNeedsToSlideTitleBarOffScreen; 3107 3108 /** 3109 * The destination Y scroll position to be used when the page finishes 3110 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3111 */ 3112 private int mYDistanceToSlideTitleOffScreen; 3113 3114 // scale from content to view coordinates, and pin 3115 // return true if pin caused the final x/y different than the request cx/cy, 3116 // and a future scroll may reach the request cx/cy after our size has 3117 // changed 3118 // return false if the view scroll to the exact position as it is requested, 3119 // where negative numbers are taken to mean 0 3120 private boolean setContentScrollTo(int cx, int cy) { 3121 if (mDrawHistory) { 3122 // disallow WebView to change the scroll position as History Picture 3123 // is used in the view system. 3124 // One known case where this is called is that WebCore tries to 3125 // restore the scroll position. As history Picture already uses the 3126 // saved scroll position, it is ok to skip this. 3127 return false; 3128 } 3129 int vx; 3130 int vy; 3131 if ((cx | cy) == 0) { 3132 // If the page is being scrolled to (0,0), do not add in the title 3133 // bar's height, and simply scroll to (0,0). (The only other work 3134 // in contentToView_ is to multiply, so this would not change 0.) 3135 vx = 0; 3136 vy = 0; 3137 } else { 3138 vx = contentToViewX(cx); 3139 vy = contentToViewY(cy); 3140 } 3141// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3142// vx + " " + vy + "]"); 3143 // Some mobile sites attempt to scroll the title bar off the page by 3144 // scrolling to (0,1). If we are at the top left corner of the 3145 // page, assume this is an attempt to scroll off the title bar, and 3146 // animate the title bar off screen slowly enough that the user can see 3147 // it. 3148 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3149 && mTitleBar != null) { 3150 // FIXME: 100 should be defined somewhere as our max progress. 3151 if (getProgress() < 100) { 3152 // Wait to scroll the title bar off screen until the page has 3153 // finished loading. Keep track of the URL and the destination 3154 // Y position 3155 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3156 mYDistanceToSlideTitleOffScreen = vy; 3157 } else { 3158 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3159 } 3160 // Since we are animating, we have not yet reached the desired 3161 // scroll position. Do not return true to request another attempt 3162 return false; 3163 } 3164 pinScrollTo(vx, vy, false, 0); 3165 // If the request was to scroll to a negative coordinate, treat it as if 3166 // it was a request to scroll to 0 3167 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3168 return true; 3169 } else { 3170 return false; 3171 } 3172 } 3173 3174 // scale from content to view coordinates, and pin 3175 private void spawnContentScrollTo(int cx, int cy) { 3176 if (mDrawHistory) { 3177 // disallow WebView to change the scroll position as History Picture 3178 // is used in the view system. 3179 return; 3180 } 3181 int vx = contentToViewX(cx); 3182 int vy = contentToViewY(cy); 3183 pinScrollTo(vx, vy, true, 0); 3184 } 3185 3186 /** 3187 * These are from webkit, and are in content coordinate system (unzoomed) 3188 */ 3189 private void contentSizeChanged(boolean updateLayout) { 3190 // suppress 0,0 since we usually see real dimensions soon after 3191 // this avoids drawing the prev content in a funny place. If we find a 3192 // way to consolidate these notifications, this check may become 3193 // obsolete 3194 if ((mContentWidth | mContentHeight) == 0) { 3195 return; 3196 } 3197 3198 if (mHeightCanMeasure) { 3199 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3200 || updateLayout) { 3201 requestLayout(); 3202 } 3203 } else if (mWidthCanMeasure) { 3204 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3205 || updateLayout) { 3206 requestLayout(); 3207 } 3208 } else { 3209 // If we don't request a layout, try to send our view size to the 3210 // native side to ensure that WebCore has the correct dimensions. 3211 sendViewSizeZoom(false); 3212 } 3213 } 3214 3215 /** 3216 * Set the WebViewClient that will receive various notifications and 3217 * requests. This will replace the current handler. 3218 * @param client An implementation of WebViewClient. 3219 */ 3220 public void setWebViewClient(WebViewClient client) { 3221 mCallbackProxy.setWebViewClient(client); 3222 } 3223 3224 /** 3225 * Gets the WebViewClient 3226 * @return the current WebViewClient instance. 3227 * 3228 *@hide pending API council approval. 3229 */ 3230 public WebViewClient getWebViewClient() { 3231 return mCallbackProxy.getWebViewClient(); 3232 } 3233 3234 /** 3235 * Register the interface to be used when content can not be handled by 3236 * the rendering engine, and should be downloaded instead. This will replace 3237 * the current handler. 3238 * @param listener An implementation of DownloadListener. 3239 */ 3240 public void setDownloadListener(DownloadListener listener) { 3241 mCallbackProxy.setDownloadListener(listener); 3242 } 3243 3244 /** 3245 * Set the chrome handler. This is an implementation of WebChromeClient for 3246 * use in handling Javascript dialogs, favicons, titles, and the progress. 3247 * This will replace the current handler. 3248 * @param client An implementation of WebChromeClient. 3249 */ 3250 public void setWebChromeClient(WebChromeClient client) { 3251 mCallbackProxy.setWebChromeClient(client); 3252 } 3253 3254 /** 3255 * Gets the chrome handler. 3256 * @return the current WebChromeClient instance. 3257 * 3258 * @hide API council approval. 3259 */ 3260 public WebChromeClient getWebChromeClient() { 3261 return mCallbackProxy.getWebChromeClient(); 3262 } 3263 3264 /** 3265 * Set the back/forward list client. This is an implementation of 3266 * WebBackForwardListClient for handling new items and changes in the 3267 * history index. 3268 * @param client An implementation of WebBackForwardListClient. 3269 * {@hide} 3270 */ 3271 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3272 mCallbackProxy.setWebBackForwardListClient(client); 3273 } 3274 3275 /** 3276 * Gets the WebBackForwardListClient. 3277 * {@hide} 3278 */ 3279 public WebBackForwardListClient getWebBackForwardListClient() { 3280 return mCallbackProxy.getWebBackForwardListClient(); 3281 } 3282 3283 /** 3284 * Set the Picture listener. This is an interface used to receive 3285 * notifications of a new Picture. 3286 * @param listener An implementation of WebView.PictureListener. 3287 */ 3288 public void setPictureListener(PictureListener listener) { 3289 mPictureListener = listener; 3290 } 3291 3292 /** 3293 * {@hide} 3294 */ 3295 /* FIXME: Debug only! Remove for SDK! */ 3296 public void externalRepresentation(Message callback) { 3297 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3298 } 3299 3300 /** 3301 * {@hide} 3302 */ 3303 /* FIXME: Debug only! Remove for SDK! */ 3304 public void documentAsText(Message callback) { 3305 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3306 } 3307 3308 /** 3309 * Use this function to bind an object to Javascript so that the 3310 * methods can be accessed from Javascript. 3311 * <p><strong>IMPORTANT:</strong> 3312 * <ul> 3313 * <li> Using addJavascriptInterface() allows JavaScript to control your 3314 * application. This can be a very useful feature or a dangerous security 3315 * issue. When the HTML in the WebView is untrustworthy (for example, part 3316 * or all of the HTML is provided by some person or process), then an 3317 * attacker could inject HTML that will execute your code and possibly any 3318 * code of the attacker's choosing.<br> 3319 * Do not use addJavascriptInterface() unless all of the HTML in this 3320 * WebView was written by you.</li> 3321 * <li> The Java object that is bound runs in another thread and not in 3322 * the thread that it was constructed in.</li> 3323 * </ul></p> 3324 * @param obj The class instance to bind to Javascript 3325 * @param interfaceName The name to used to expose the class in Javascript 3326 */ 3327 public void addJavascriptInterface(Object obj, String interfaceName) { 3328 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3329 arg.mObject = obj; 3330 arg.mInterfaceName = interfaceName; 3331 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3332 } 3333 3334 /** 3335 * Return the WebSettings object used to control the settings for this 3336 * WebView. 3337 * @return A WebSettings object that can be used to control this WebView's 3338 * settings. 3339 */ 3340 public WebSettings getSettings() { 3341 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3342 } 3343 3344 /** 3345 * Return the list of currently loaded plugins. 3346 * @return The list of currently loaded plugins. 3347 * 3348 * @deprecated This was used for Gears, which has been deprecated. 3349 */ 3350 @Deprecated 3351 public static synchronized PluginList getPluginList() { 3352 return new PluginList(); 3353 } 3354 3355 /** 3356 * @deprecated This was used for Gears, which has been deprecated. 3357 */ 3358 @Deprecated 3359 public void refreshPlugins(boolean reloadOpenPages) { } 3360 3361 //------------------------------------------------------------------------- 3362 // Override View methods 3363 //------------------------------------------------------------------------- 3364 3365 @Override 3366 protected void finalize() throws Throwable { 3367 try { 3368 destroy(); 3369 } finally { 3370 super.finalize(); 3371 } 3372 } 3373 3374 @Override 3375 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3376 if (child == mTitleBar) { 3377 // When drawing the title bar, move it horizontally to always show 3378 // at the top of the WebView. 3379 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3380 } 3381 return super.drawChild(canvas, child, drawingTime); 3382 } 3383 3384 private void drawContent(Canvas canvas) { 3385 // Update the buttons in the picture, so when we draw the picture 3386 // to the screen, they are in the correct state. 3387 // Tell the native side if user is a) touching the screen, 3388 // b) pressing the trackball down, or c) pressing the enter key 3389 // If the cursor is on a button, we need to draw it in the pressed 3390 // state. 3391 // If mNativeClass is 0, we should not reach here, so we do not 3392 // need to check it again. 3393 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3394 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3395 || mTrackballDown || mGotCenterDown, false); 3396 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3397 } 3398 3399 @Override 3400 protected void onDraw(Canvas canvas) { 3401 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3402 if (mNativeClass == 0) { 3403 return; 3404 } 3405 3406 // if both mContentWidth and mContentHeight are 0, it means there is no 3407 // valid Picture passed to WebView yet. This can happen when WebView 3408 // just starts. Draw the background and return. 3409 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3410 canvas.drawColor(mBackgroundColor); 3411 return; 3412 } 3413 3414 int saveCount = canvas.save(); 3415 if (mTitleBar != null) { 3416 canvas.translate(0, (int) mTitleBar.getHeight()); 3417 } 3418 if (mDragTrackerHandler == null) { 3419 drawContent(canvas); 3420 } else { 3421 if (!mDragTrackerHandler.draw(canvas)) { 3422 // sometimes the tracker doesn't draw, even though its active 3423 drawContent(canvas); 3424 } 3425 if (mDragTrackerHandler.isFinished()) { 3426 mDragTrackerHandler = null; 3427 } 3428 } 3429 canvas.restoreToCount(saveCount); 3430 3431 // Now draw the shadow. 3432 int titleH = getVisibleTitleHeight(); 3433 if (mTitleBar != null && titleH == 0) { 3434 int height = (int) (5f * getContext().getResources() 3435 .getDisplayMetrics().density); 3436 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3437 mScrollY + height); 3438 mTitleShadow.draw(canvas); 3439 } 3440 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3441 invalidate(); 3442 } 3443 if (inEditingMode()) mWebTextView.onDrawSubstitute(); 3444 mWebViewCore.signalRepaintDone(); 3445 3446 // paint the highlight in the end 3447 if (!mTouchHighlightRegion.isEmpty()) { 3448 if (mTouchHightlightPaint == null) { 3449 mTouchHightlightPaint = new Paint(); 3450 mTouchHightlightPaint.setColor(mHightlightColor); 3451 mTouchHightlightPaint.setAntiAlias(true); 3452 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3453 TOUCH_HIGHLIGHT_ARC)); 3454 } 3455 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3456 mTouchHightlightPaint); 3457 } 3458 if (DEBUG_TOUCH_HIGHLIGHT) { 3459 if (getSettings().getNavDump()) { 3460 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3461 if (mTouchCrossHairColor == null) { 3462 mTouchCrossHairColor = new Paint(); 3463 mTouchCrossHairColor.setColor(Color.RED); 3464 } 3465 canvas.drawLine(mTouchHighlightX - mNavSlop, 3466 mTouchHighlightY - mNavSlop, mTouchHighlightX 3467 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3468 + 1, mTouchCrossHairColor); 3469 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3470 mTouchHighlightY - mNavSlop, mTouchHighlightX 3471 - mNavSlop, 3472 mTouchHighlightY + mNavSlop + 1, 3473 mTouchCrossHairColor); 3474 } 3475 } 3476 } 3477 } 3478 3479 private void removeTouchHighlight(boolean removePendingMessage) { 3480 if (removePendingMessage) { 3481 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3482 } 3483 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3484 } 3485 3486 @Override 3487 public void setLayoutParams(ViewGroup.LayoutParams params) { 3488 if (params.height == LayoutParams.WRAP_CONTENT) { 3489 mWrapContent = true; 3490 } 3491 super.setLayoutParams(params); 3492 } 3493 3494 @Override 3495 public boolean performLongClick() { 3496 // performLongClick() is the result of a delayed message. If we switch 3497 // to windows overview, the WebView will be temporarily removed from the 3498 // view system. In that case, do nothing. 3499 if (getParent() == null) return false; 3500 3501 // A multi-finger gesture can look like a long press; make sure we don't take 3502 // long press actions if we're scaling. 3503 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3504 if (detector != null && detector.isInProgress()) { 3505 return false; 3506 } 3507 3508 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3509 // Send the click so that the textfield is in focus 3510 centerKeyPressOnTextField(); 3511 rebuildWebTextView(); 3512 } else { 3513 clearTextEntry(); 3514 } 3515 if (inEditingMode()) { 3516 return mWebTextView.performLongClick(); 3517 } 3518 /* if long click brings up a context menu, the super function 3519 * returns true and we're done. Otherwise, nothing happened when 3520 * the user clicked. */ 3521 if (super.performLongClick()) { 3522 return true; 3523 } 3524 /* In the case where the application hasn't already handled the long 3525 * click action, look for a word under the click. If one is found, 3526 * animate the text selection into view. 3527 * FIXME: no animation code yet */ 3528 if (mSelectingText) return false; // long click does nothing on selection 3529 int x = viewToContentX((int) mLastTouchX + mScrollX); 3530 int y = viewToContentY((int) mLastTouchY + mScrollY); 3531 setUpSelect(); 3532 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3533 nativeSetExtendSelection(); 3534 return true; 3535 } 3536 selectionDone(); 3537 return false; 3538 } 3539 3540 /** 3541 * Keep track of the Callback so we can end its ActionMode or remove its 3542 * titlebar. 3543 */ 3544 private SelectActionModeCallback mSelectCallback; 3545 3546 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3547 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3548 Rect vBox = contentToViewRect(contentBounds); 3549 Rect visibleRect = new Rect(); 3550 calcOurVisibleRect(visibleRect); 3551 // If the textfield is on screen, place the WebTextView in 3552 // its new place, accounting for our new scroll/zoom values, 3553 // and adjust its textsize. 3554 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3555 : visibleRect.contains(vBox)) { 3556 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3557 vBox.height()); 3558 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3559 contentToViewDimension( 3560 nativeFocusCandidateTextSize())); 3561 return true; 3562 } else { 3563 // The textfield is now off screen. The user probably 3564 // was not zooming to see the textfield better. Remove 3565 // the WebTextView. If the user types a key, and the 3566 // textfield is still in focus, we will reconstruct 3567 // the WebTextView and scroll it back on screen. 3568 mWebTextView.remove(); 3569 return false; 3570 } 3571 } 3572 3573 private void onZoomAnimationStart() { 3574 // If it is in password mode, turn it off so it does not draw misplaced. 3575 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3576 mWebTextView.setInPassword(false); 3577 } 3578 } 3579 3580 private void onZoomAnimationEnd() { 3581 // adjust the edit text view if needed 3582 if (inEditingMode() && didUpdateTextViewBounds(false) && nativeFocusCandidateIsPassword()) { 3583 // If it is a password field, start drawing the WebTextView once 3584 // again. 3585 mWebTextView.setInPassword(true); 3586 } 3587 } 3588 3589 void onFixedLengthZoomAnimationStart() { 3590 WebViewCore.pauseUpdatePicture(getWebViewCore()); 3591 onZoomAnimationStart(); 3592 } 3593 3594 void onFixedLengthZoomAnimationEnd() { 3595 WebViewCore.resumeUpdatePicture(mWebViewCore); 3596 onZoomAnimationEnd(); 3597 } 3598 3599 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 3600 Paint.DITHER_FLAG | 3601 Paint.SUBPIXEL_TEXT_FLAG; 3602 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 3603 Paint.DITHER_FLAG; 3604 3605 private final DrawFilter mZoomFilter = 3606 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 3607 // If we need to trade better quality for speed, set mScrollFilter to null 3608 private final DrawFilter mScrollFilter = 3609 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 3610 3611 private void drawCoreAndCursorRing(Canvas canvas, int color, 3612 boolean drawCursorRing) { 3613 if (mDrawHistory) { 3614 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3615 canvas.drawPicture(mHistoryPicture); 3616 return; 3617 } 3618 if (mNativeClass == 0) return; 3619 3620 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 3621 boolean animateScroll = ((!mScroller.isFinished() 3622 || mVelocityTracker != null) 3623 && (mTouchMode != TOUCH_DRAG_MODE || 3624 mHeldMotionless != MOTIONLESS_TRUE)) 3625 || mDeferTouchMode == TOUCH_DRAG_MODE; 3626 if (mTouchMode == TOUCH_DRAG_MODE) { 3627 if (mHeldMotionless == MOTIONLESS_PENDING) { 3628 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3629 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3630 mHeldMotionless = MOTIONLESS_FALSE; 3631 } 3632 if (mHeldMotionless == MOTIONLESS_FALSE) { 3633 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3634 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3635 mHeldMotionless = MOTIONLESS_PENDING; 3636 } 3637 } 3638 if (animateZoom) { 3639 mZoomManager.animateZoom(canvas); 3640 } else { 3641 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3642 } 3643 3644 boolean UIAnimationsRunning = false; 3645 // Currently for each draw we compute the animation values; 3646 // We may in the future decide to do that independently. 3647 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3648 UIAnimationsRunning = true; 3649 // If we have unfinished (or unstarted) animations, 3650 // we ask for a repaint. 3651 invalidate(); 3652 } 3653 3654 // decide which adornments to draw 3655 int extras = DRAW_EXTRAS_NONE; 3656 if (DebugFlags.WEB_VIEW) { 3657 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 3658 + " mSelectingText=" + mSelectingText 3659 + " nativePageShouldHandleShiftAndArrows()=" 3660 + nativePageShouldHandleShiftAndArrows() 3661 + " animateZoom=" + animateZoom); 3662 } 3663 if (mFindIsUp) { 3664 extras = DRAW_EXTRAS_FIND; 3665 } else if (mSelectingText) { 3666 extras = DRAW_EXTRAS_SELECTION; 3667 nativeSetSelectionPointer(mDrawSelectionPointer, 3668 mZoomManager.getInvScale(), 3669 mSelectX, mSelectY - getTitleHeight()); 3670 } else if (drawCursorRing) { 3671 extras = DRAW_EXTRAS_CURSOR_RING; 3672 } 3673 DrawFilter df = null; 3674 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 3675 df = mZoomFilter; 3676 } else if (animateScroll) { 3677 df = mScrollFilter; 3678 } 3679 canvas.setDrawFilter(df); 3680 int content = nativeDraw(canvas, color, extras, true); 3681 canvas.setDrawFilter(null); 3682 if (content != 0) { 3683 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 3684 } 3685 3686 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3687 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3688 mTouchMode = TOUCH_SHORTPRESS_MODE; 3689 } 3690 } 3691 if (mFocusSizeChanged) { 3692 mFocusSizeChanged = false; 3693 // If we are zooming, this will get handled above, when the zoom 3694 // finishes. We also do not need to do this unless the WebTextView 3695 // is showing. 3696 if (!animateZoom && inEditingMode()) { 3697 didUpdateTextViewBounds(true); 3698 } 3699 } 3700 } 3701 3702 // draw history 3703 private boolean mDrawHistory = false; 3704 private Picture mHistoryPicture = null; 3705 private int mHistoryWidth = 0; 3706 private int mHistoryHeight = 0; 3707 3708 // Only check the flag, can be called from WebCore thread 3709 boolean drawHistory() { 3710 return mDrawHistory; 3711 } 3712 3713 int getHistoryPictureWidth() { 3714 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 3715 } 3716 3717 // Should only be called in UI thread 3718 void switchOutDrawHistory() { 3719 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3720 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 3721 mDrawHistory = false; 3722 mHistoryPicture = null; 3723 invalidate(); 3724 int oldScrollX = mScrollX; 3725 int oldScrollY = mScrollY; 3726 mScrollX = pinLocX(mScrollX); 3727 mScrollY = pinLocY(mScrollY); 3728 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3729 mUserScroll = false; 3730 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3731 oldScrollY); 3732 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3733 } else { 3734 sendOurVisibleRect(); 3735 } 3736 } 3737 } 3738 3739 WebViewCore.CursorData cursorData() { 3740 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3741 result.mMoveGeneration = nativeMoveGeneration(); 3742 result.mFrame = nativeCursorFramePointer(); 3743 Point position = nativeCursorPosition(); 3744 result.mX = position.x; 3745 result.mY = position.y; 3746 return result; 3747 } 3748 3749 /** 3750 * Delete text from start to end in the focused textfield. If there is no 3751 * focus, or if start == end, silently fail. If start and end are out of 3752 * order, swap them. 3753 * @param start Beginning of selection to delete. 3754 * @param end End of selection to delete. 3755 */ 3756 /* package */ void deleteSelection(int start, int end) { 3757 mTextGeneration++; 3758 WebViewCore.TextSelectionData data 3759 = new WebViewCore.TextSelectionData(start, end); 3760 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3761 data); 3762 } 3763 3764 /** 3765 * Set the selection to (start, end) in the focused textfield. If start and 3766 * end are out of order, swap them. 3767 * @param start Beginning of selection. 3768 * @param end End of selection. 3769 */ 3770 /* package */ void setSelection(int start, int end) { 3771 if (mWebViewCore != null) { 3772 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3773 } 3774 } 3775 3776 @Override 3777 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3778 InputConnection connection = super.onCreateInputConnection(outAttrs); 3779 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3780 return connection; 3781 } 3782 3783 /** 3784 * Called in response to a message from webkit telling us that the soft 3785 * keyboard should be launched. 3786 */ 3787 private void displaySoftKeyboard(boolean isTextView) { 3788 InputMethodManager imm = (InputMethodManager) 3789 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3790 3791 // bring it back to the default level scale so that user can enter text 3792 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 3793 if (zoom) { 3794 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 3795 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 3796 } 3797 if (isTextView) { 3798 rebuildWebTextView(); 3799 if (inEditingMode()) { 3800 imm.showSoftInput(mWebTextView, 0); 3801 if (zoom) { 3802 didUpdateTextViewBounds(true); 3803 } 3804 return; 3805 } 3806 } 3807 // Used by plugins and contentEditable. 3808 // Also used if the navigation cache is out of date, and 3809 // does not recognize that a textfield is in focus. In that 3810 // case, use WebView as the targeted view. 3811 // see http://b/issue?id=2457459 3812 imm.showSoftInput(this, 0); 3813 } 3814 3815 // Called by WebKit to instruct the UI to hide the keyboard 3816 private void hideSoftKeyboard() { 3817 InputMethodManager imm = (InputMethodManager) 3818 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3819 if (imm.isActive(this) 3820 || (inEditingMode() && imm.isActive(mWebTextView))) { 3821 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3822 } 3823 } 3824 3825 /* 3826 * This method checks the current focus and cursor and potentially rebuilds 3827 * mWebTextView to have the appropriate properties, such as password, 3828 * multiline, and what text it contains. It also removes it if necessary. 3829 */ 3830 /* package */ void rebuildWebTextView() { 3831 // If the WebView does not have focus, do nothing until it gains focus. 3832 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3833 return; 3834 } 3835 boolean alreadyThere = inEditingMode(); 3836 // inEditingMode can only return true if mWebTextView is non-null, 3837 // so we can safely call remove() if (alreadyThere) 3838 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3839 if (alreadyThere) { 3840 mWebTextView.remove(); 3841 } 3842 return; 3843 } 3844 // At this point, we know we have found an input field, so go ahead 3845 // and create the WebTextView if necessary. 3846 if (mWebTextView == null) { 3847 mWebTextView = new WebTextView(mContext, WebView.this); 3848 // Initialize our generation number. 3849 mTextGeneration = 0; 3850 } 3851 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3852 contentToViewDimension(nativeFocusCandidateTextSize())); 3853 Rect visibleRect = new Rect(); 3854 calcOurContentVisibleRect(visibleRect); 3855 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3856 // should be in content coordinates. 3857 Rect bounds = nativeFocusCandidateNodeBounds(); 3858 Rect vBox = contentToViewRect(bounds); 3859 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3860 if (!Rect.intersects(bounds, visibleRect)) { 3861 mWebTextView.bringIntoView(); 3862 } 3863 String text = nativeFocusCandidateText(); 3864 int nodePointer = nativeFocusCandidatePointer(); 3865 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3866 // It is possible that we have the same textfield, but it has moved, 3867 // i.e. In the case of opening/closing the screen. 3868 // In that case, we need to set the dimensions, but not the other 3869 // aspects. 3870 // If the text has been changed by webkit, update it. However, if 3871 // there has been more UI text input, ignore it. We will receive 3872 // another update when that text is recognized. 3873 if (text != null && !text.equals(mWebTextView.getText().toString()) 3874 && nativeTextGeneration() == mTextGeneration) { 3875 mWebTextView.setTextAndKeepSelection(text); 3876 } 3877 } else { 3878 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3879 Gravity.RIGHT : Gravity.NO_GRAVITY); 3880 // This needs to be called before setType, which may call 3881 // requestFormData, and it needs to have the correct nodePointer. 3882 mWebTextView.setNodePointer(nodePointer); 3883 mWebTextView.setType(nativeFocusCandidateType()); 3884 if (null == text) { 3885 if (DebugFlags.WEB_VIEW) { 3886 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3887 } 3888 text = ""; 3889 } 3890 mWebTextView.setTextAndKeepSelection(text); 3891 InputMethodManager imm = InputMethodManager.peekInstance(); 3892 if (imm != null && imm.isActive(mWebTextView)) { 3893 imm.restartInput(mWebTextView); 3894 } 3895 } 3896 mWebTextView.requestFocus(); 3897 } 3898 3899 /** 3900 * Tell webkit to put the cursor on screen. 3901 */ 3902 /* package */ void revealSelection() { 3903 if (mWebViewCore != null) { 3904 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 3905 } 3906 } 3907 3908 /** 3909 * Called by WebTextView to find saved form data associated with the 3910 * textfield 3911 * @param name Name of the textfield. 3912 * @param nodePointer Pointer to the node of the textfield, so it can be 3913 * compared to the currently focused textfield when the data is 3914 * retrieved. 3915 */ 3916 /* package */ void requestFormData(String name, int nodePointer) { 3917 if (mWebViewCore.getSettings().getSaveFormData()) { 3918 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3919 update.arg1 = nodePointer; 3920 RequestFormData updater = new RequestFormData(name, getUrl(), 3921 update); 3922 Thread t = new Thread(updater); 3923 t.start(); 3924 } 3925 } 3926 3927 /** 3928 * Pass a message to find out the <label> associated with the <input> 3929 * identified by nodePointer 3930 * @param framePointer Pointer to the frame containing the <input> node 3931 * @param nodePointer Pointer to the node for which a <label> is desired. 3932 */ 3933 /* package */ void requestLabel(int framePointer, int nodePointer) { 3934 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3935 nodePointer); 3936 } 3937 3938 /* 3939 * This class requests an Adapter for the WebTextView which shows past 3940 * entries stored in the database. It is a Runnable so that it can be done 3941 * in its own thread, without slowing down the UI. 3942 */ 3943 private class RequestFormData implements Runnable { 3944 private String mName; 3945 private String mUrl; 3946 private Message mUpdateMessage; 3947 3948 public RequestFormData(String name, String url, Message msg) { 3949 mName = name; 3950 mUrl = url; 3951 mUpdateMessage = msg; 3952 } 3953 3954 public void run() { 3955 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3956 if (pastEntries.size() > 0) { 3957 AutoCompleteAdapter adapter = new 3958 AutoCompleteAdapter(mContext, pastEntries); 3959 mUpdateMessage.obj = adapter; 3960 mUpdateMessage.sendToTarget(); 3961 } 3962 } 3963 } 3964 3965 /** 3966 * Dump the display tree to "/sdcard/displayTree.txt" 3967 * 3968 * @hide debug only 3969 */ 3970 public void dumpDisplayTree() { 3971 nativeDumpDisplayTree(getUrl()); 3972 } 3973 3974 /** 3975 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3976 * "/sdcard/domTree.txt" 3977 * 3978 * @hide debug only 3979 */ 3980 public void dumpDomTree(boolean toFile) { 3981 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3982 } 3983 3984 /** 3985 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3986 * to "/sdcard/renderTree.txt" 3987 * 3988 * @hide debug only 3989 */ 3990 public void dumpRenderTree(boolean toFile) { 3991 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3992 } 3993 3994 /** 3995 * Called by DRT on UI thread, need to proxy to WebCore thread. 3996 * 3997 * @hide debug only 3998 */ 3999 public void useMockDeviceOrientation() { 4000 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4001 } 4002 4003 /** 4004 * Called by DRT on WebCore thread. 4005 * 4006 * @hide debug only 4007 */ 4008 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4009 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4010 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4011 canProvideGamma, gamma); 4012 } 4013 4014 /** 4015 * Dump the V8 counters to standard output. 4016 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4017 * true. Otherwise, this will do nothing. 4018 * 4019 * @hide debug only 4020 */ 4021 public void dumpV8Counters() { 4022 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4023 } 4024 4025 // This is used to determine long press with the center key. Does not 4026 // affect long press with the trackball/touch. 4027 private boolean mGotCenterDown = false; 4028 4029 @Override 4030 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4031 // send complex characters to webkit for use by JS and plugins 4032 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4033 // pass the key to DOM 4034 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4035 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4036 // return true as DOM handles the key 4037 return true; 4038 } 4039 return false; 4040 } 4041 4042 @Override 4043 public boolean onKeyDown(int keyCode, KeyEvent event) { 4044 if (DebugFlags.WEB_VIEW) { 4045 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4046 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4047 } 4048 4049 if (mNativeClass == 0) { 4050 return false; 4051 } 4052 4053 // do this hack up front, so it always works, regardless of touch-mode 4054 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4055 mAutoRedraw = !mAutoRedraw; 4056 if (mAutoRedraw) { 4057 invalidate(); 4058 } 4059 return true; 4060 } 4061 4062 // Bubble up the key event if 4063 // 1. it is a system key; or 4064 // 2. the host application wants to handle it; 4065 // 3. the accessibility injector is present and wants to handle it; 4066 if (event.isSystem() 4067 || mCallbackProxy.uiOverrideKeyEvent(event) 4068 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4069 return false; 4070 } 4071 4072 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4073 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4074 if (pageShouldHandleShiftAndArrows()) { 4075 mShiftIsPressed = true; 4076 } else if (!nativeCursorWantsKeyEvents() && !mSelectingText) { 4077 setUpSelect(); 4078 } 4079 } 4080 4081 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4082 pageUp(false); 4083 return true; 4084 } 4085 4086 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4087 pageDown(false); 4088 return true; 4089 } 4090 4091 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4092 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4093 switchOutDrawHistory(); 4094 if (pageShouldHandleShiftAndArrows()) { 4095 letPageHandleNavKey(keyCode, event.getEventTime(), true); 4096 return true; 4097 } 4098 if (mSelectingText) { 4099 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4100 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4101 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4102 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4103 int multiplier = event.getRepeatCount() + 1; 4104 moveSelection(xRate * multiplier, yRate * multiplier); 4105 return true; 4106 } 4107 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4108 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4109 return true; 4110 } 4111 // Bubble up the key event as WebView doesn't handle it 4112 return false; 4113 } 4114 4115 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4116 switchOutDrawHistory(); 4117 if (event.getRepeatCount() == 0) { 4118 if (mSelectingText) { 4119 return true; // discard press if copy in progress 4120 } 4121 mGotCenterDown = true; 4122 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4123 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4124 // Already checked mNativeClass, so we do not need to check it 4125 // again. 4126 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4127 return true; 4128 } 4129 // Bubble up the key event as WebView doesn't handle it 4130 return false; 4131 } 4132 4133 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 4134 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 4135 // turn off copy select if a shift-key combo is pressed 4136 selectionDone(); 4137 mShiftIsPressed = false; 4138 } 4139 4140 if (getSettings().getNavDump()) { 4141 switch (keyCode) { 4142 case KeyEvent.KEYCODE_4: 4143 dumpDisplayTree(); 4144 break; 4145 case KeyEvent.KEYCODE_5: 4146 case KeyEvent.KEYCODE_6: 4147 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4148 break; 4149 case KeyEvent.KEYCODE_7: 4150 case KeyEvent.KEYCODE_8: 4151 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4152 break; 4153 case KeyEvent.KEYCODE_9: 4154 nativeInstrumentReport(); 4155 return true; 4156 } 4157 } 4158 4159 if (nativeCursorIsTextInput()) { 4160 // This message will put the node in focus, for the DOM's notion 4161 // of focus, and make the focuscontroller active 4162 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 4163 nativeCursorNodePointer()); 4164 // This will bring up the WebTextView and put it in focus, for 4165 // our view system's notion of focus 4166 rebuildWebTextView(); 4167 // Now we need to pass the event to it 4168 if (inEditingMode()) { 4169 mWebTextView.setDefaultSelection(); 4170 return mWebTextView.dispatchKeyEvent(event); 4171 } 4172 } else if (nativeHasFocusNode()) { 4173 // In this case, the cursor is not on a text input, but the focus 4174 // might be. Check it, and if so, hand over to the WebTextView. 4175 rebuildWebTextView(); 4176 if (inEditingMode()) { 4177 mWebTextView.setDefaultSelection(); 4178 return mWebTextView.dispatchKeyEvent(event); 4179 } 4180 } 4181 4182 // TODO: should we pass all the keys to DOM or check the meta tag 4183 if (nativeCursorWantsKeyEvents() || true) { 4184 // pass the key to DOM 4185 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4186 // return true as DOM handles the key 4187 return true; 4188 } 4189 4190 // Bubble up the key event as WebView doesn't handle it 4191 return false; 4192 } 4193 4194 @Override 4195 public boolean onKeyUp(int keyCode, KeyEvent event) { 4196 if (DebugFlags.WEB_VIEW) { 4197 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4198 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4199 } 4200 4201 if (mNativeClass == 0) { 4202 return false; 4203 } 4204 4205 // special CALL handling when cursor node's href is "tel:XXX" 4206 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4207 String text = nativeCursorText(); 4208 if (!nativeCursorIsTextInput() && text != null 4209 && text.startsWith(SCHEME_TEL)) { 4210 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4211 getContext().startActivity(intent); 4212 return true; 4213 } 4214 } 4215 4216 // Bubble up the key event if 4217 // 1. it is a system key; or 4218 // 2. the host application wants to handle it; 4219 // 3. the accessibility injector is present and wants to handle it; 4220 if (event.isSystem() 4221 || mCallbackProxy.uiOverrideKeyEvent(event) 4222 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4223 return false; 4224 } 4225 4226 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4227 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4228 if (pageShouldHandleShiftAndArrows()) { 4229 mShiftIsPressed = false; 4230 } else if (copySelection()) { 4231 selectionDone(); 4232 return true; 4233 } 4234 } 4235 4236 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4237 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4238 if (pageShouldHandleShiftAndArrows()) { 4239 letPageHandleNavKey(keyCode, event.getEventTime(), false); 4240 return true; 4241 } 4242 // always handle the navigation keys in the UI thread 4243 // Bubble up the key event as WebView doesn't handle it 4244 return false; 4245 } 4246 4247 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4248 // remove the long press message first 4249 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4250 mGotCenterDown = false; 4251 4252 if (mSelectingText) { 4253 if (mExtendSelection) { 4254 copySelection(); 4255 selectionDone(); 4256 } else { 4257 mExtendSelection = true; 4258 nativeSetExtendSelection(); 4259 invalidate(); // draw the i-beam instead of the arrow 4260 } 4261 return true; // discard press if copy in progress 4262 } 4263 4264 // perform the single click 4265 Rect visibleRect = sendOurVisibleRect(); 4266 // Note that sendOurVisibleRect calls viewToContent, so the 4267 // coordinates should be in content coordinates. 4268 if (!nativeCursorIntersects(visibleRect)) { 4269 return false; 4270 } 4271 WebViewCore.CursorData data = cursorData(); 4272 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4273 playSoundEffect(SoundEffectConstants.CLICK); 4274 if (nativeCursorIsTextInput()) { 4275 rebuildWebTextView(); 4276 centerKeyPressOnTextField(); 4277 if (inEditingMode()) { 4278 mWebTextView.setDefaultSelection(); 4279 } 4280 return true; 4281 } 4282 clearTextEntry(); 4283 nativeShowCursorTimed(); 4284 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4285 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4286 nativeCursorNodePointer()); 4287 } 4288 return true; 4289 } 4290 4291 // TODO: should we pass all the keys to DOM or check the meta tag 4292 if (nativeCursorWantsKeyEvents() || true) { 4293 // pass the key to DOM 4294 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4295 // return true as DOM handles the key 4296 return true; 4297 } 4298 4299 // Bubble up the key event as WebView doesn't handle it 4300 return false; 4301 } 4302 4303 private void setUpSelect() { 4304 if (0 == mNativeClass) return; // client isn't initialized 4305 if (inFullScreenMode()) return; 4306 if (mSelectingText) return; 4307 mExtendSelection = false; 4308 mSelectingText = mDrawSelectionPointer = true; 4309 // don't let the picture change during text selection 4310 WebViewCore.pauseUpdatePicture(mWebViewCore); 4311 nativeResetSelection(); 4312 if (nativeHasCursorNode()) { 4313 Rect rect = nativeCursorNodeBounds(); 4314 mSelectX = contentToViewX(rect.left); 4315 mSelectY = contentToViewY(rect.top); 4316 } else if (mLastTouchY > getVisibleTitleHeight()) { 4317 mSelectX = mScrollX + (int) mLastTouchX; 4318 mSelectY = mScrollY + (int) mLastTouchY; 4319 } else { 4320 mSelectX = mScrollX + getViewWidth() / 2; 4321 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4322 } 4323 nativeHideCursor(); 4324 mSelectCallback = new SelectActionModeCallback(); 4325 mSelectCallback.setWebView(this); 4326 View titleBar = mTitleBar; 4327 // We do not want to show the embedded title bar during find or 4328 // select, but keep track of it so that it can be replaced when the 4329 // mode is exited. 4330 setEmbeddedTitleBar(null); 4331 mSelectCallback.setTitleBar(titleBar); 4332 startActionMode(mSelectCallback); 4333 } 4334 4335 /** 4336 * Use this method to put the WebView into text selection mode. 4337 * Do not rely on this functionality; it will be deprecated in the future. 4338 */ 4339 public void emulateShiftHeld() { 4340 setUpSelect(); 4341 } 4342 4343 /** 4344 * Select all of the text in this WebView. 4345 */ 4346 void selectAll() { 4347 if (0 == mNativeClass) return; // client isn't initialized 4348 if (inFullScreenMode()) return; 4349 if (!mSelectingText) setUpSelect(); 4350 nativeSelectAll(); 4351 mDrawSelectionPointer = false; 4352 mExtendSelection = true; 4353 invalidate(); 4354 } 4355 4356 /** 4357 * Called when the selection has been removed. 4358 */ 4359 void selectionDone() { 4360 if (mSelectingText) { 4361 mSelectingText = false; 4362 // finish is idempotent, so this is fine even if selectionDone was 4363 // called by mSelectCallback.onDestroyActionMode 4364 mSelectCallback.finish(); 4365 mSelectCallback = null; 4366 WebViewCore.resumeUpdatePicture(mWebViewCore); 4367 invalidate(); // redraw without selection 4368 } 4369 } 4370 4371 /** 4372 * Copy the selection to the clipboard 4373 */ 4374 boolean copySelection() { 4375 boolean copiedSomething = false; 4376 String selection = getSelection(); 4377 if (selection != "") { 4378 if (DebugFlags.WEB_VIEW) { 4379 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4380 } 4381 Toast.makeText(mContext 4382 , com.android.internal.R.string.text_copied 4383 , Toast.LENGTH_SHORT).show(); 4384 copiedSomething = true; 4385 ClipboardManager cm = (ClipboardManager)getContext() 4386 .getSystemService(Context.CLIPBOARD_SERVICE); 4387 cm.setText(selection); 4388 } 4389 invalidate(); // remove selection region and pointer 4390 return copiedSomething; 4391 } 4392 4393 /** 4394 * Returns the currently highlighted text as a string. 4395 */ 4396 String getSelection() { 4397 if (mNativeClass == 0) return ""; 4398 return nativeGetSelection(); 4399 } 4400 4401 @Override 4402 protected void onAttachedToWindow() { 4403 super.onAttachedToWindow(); 4404 if (hasWindowFocus()) setActive(true); 4405 } 4406 4407 @Override 4408 protected void onDetachedFromWindow() { 4409 clearTextEntry(); 4410 mZoomManager.dismissZoomPicker(); 4411 if (hasWindowFocus()) setActive(false); 4412 super.onDetachedFromWindow(); 4413 } 4414 4415 @Override 4416 protected void onVisibilityChanged(View changedView, int visibility) { 4417 super.onVisibilityChanged(changedView, visibility); 4418 // The zoomManager may be null if the webview is created from XML that 4419 // specifies the view's visibility param as not visible (see http://b/2794841) 4420 if (visibility != View.VISIBLE && mZoomManager != null) { 4421 mZoomManager.dismissZoomPicker(); 4422 } 4423 } 4424 4425 /** 4426 * @deprecated WebView no longer needs to implement 4427 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4428 */ 4429 @Deprecated 4430 public void onChildViewAdded(View parent, View child) {} 4431 4432 /** 4433 * @deprecated WebView no longer needs to implement 4434 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4435 */ 4436 @Deprecated 4437 public void onChildViewRemoved(View p, View child) {} 4438 4439 /** 4440 * @deprecated WebView should not have implemented 4441 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4442 * does nothing now. 4443 */ 4444 @Deprecated 4445 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4446 } 4447 4448 private void setActive(boolean active) { 4449 if (active) { 4450 if (hasFocus()) { 4451 // If our window regained focus, and we have focus, then begin 4452 // drawing the cursor ring 4453 mDrawCursorRing = true; 4454 setFocusControllerActive(true); 4455 if (mNativeClass != 0) { 4456 nativeRecordButtons(true, false, true); 4457 } 4458 } else { 4459 if (!inEditingMode()) { 4460 // If our window gained focus, but we do not have it, do not 4461 // draw the cursor ring. 4462 mDrawCursorRing = false; 4463 setFocusControllerActive(false); 4464 } 4465 // We do not call nativeRecordButtons here because we assume 4466 // that when we lost focus, or window focus, it got called with 4467 // false for the first parameter 4468 } 4469 } else { 4470 if (!mZoomManager.isZoomPickerVisible()) { 4471 /* 4472 * The external zoom controls come in their own window, so our 4473 * window loses focus. Our policy is to not draw the cursor ring 4474 * if our window is not focused, but this is an exception since 4475 * the user can still navigate the web page with the zoom 4476 * controls showing. 4477 */ 4478 mDrawCursorRing = false; 4479 } 4480 mGotKeyDown = false; 4481 mShiftIsPressed = false; 4482 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4483 mTouchMode = TOUCH_DONE_MODE; 4484 if (mNativeClass != 0) { 4485 nativeRecordButtons(false, false, true); 4486 } 4487 setFocusControllerActive(false); 4488 } 4489 invalidate(); 4490 } 4491 4492 // To avoid drawing the cursor ring, and remove the TextView when our window 4493 // loses focus. 4494 @Override 4495 public void onWindowFocusChanged(boolean hasWindowFocus) { 4496 setActive(hasWindowFocus); 4497 if (hasWindowFocus) { 4498 JWebCoreJavaBridge.setActiveWebView(this); 4499 } else { 4500 JWebCoreJavaBridge.removeActiveWebView(this); 4501 } 4502 super.onWindowFocusChanged(hasWindowFocus); 4503 } 4504 4505 /* 4506 * Pass a message to WebCore Thread, telling the WebCore::Page's 4507 * FocusController to be "inactive" so that it will 4508 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4509 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4510 */ 4511 /* package */ void setFocusControllerActive(boolean active) { 4512 if (mWebViewCore == null) return; 4513 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 4514 } 4515 4516 @Override 4517 protected void onFocusChanged(boolean focused, int direction, 4518 Rect previouslyFocusedRect) { 4519 if (DebugFlags.WEB_VIEW) { 4520 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4521 } 4522 if (focused) { 4523 // When we regain focus, if we have window focus, resume drawing 4524 // the cursor ring 4525 if (hasWindowFocus()) { 4526 mDrawCursorRing = true; 4527 if (mNativeClass != 0) { 4528 nativeRecordButtons(true, false, true); 4529 } 4530 setFocusControllerActive(true); 4531 //} else { 4532 // The WebView has gained focus while we do not have 4533 // windowfocus. When our window lost focus, we should have 4534 // called nativeRecordButtons(false...) 4535 } 4536 } else { 4537 // When we lost focus, unless focus went to the TextView (which is 4538 // true if we are in editing mode), stop drawing the cursor ring. 4539 if (!inEditingMode()) { 4540 mDrawCursorRing = false; 4541 if (mNativeClass != 0) { 4542 nativeRecordButtons(false, false, true); 4543 } 4544 setFocusControllerActive(false); 4545 } 4546 mGotKeyDown = false; 4547 } 4548 4549 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4550 } 4551 4552 /** 4553 * @hide 4554 */ 4555 @Override 4556 protected boolean setFrame(int left, int top, int right, int bottom) { 4557 boolean changed = super.setFrame(left, top, right, bottom); 4558 if (!changed && mHeightCanMeasure) { 4559 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4560 // in WebViewCore after we get the first layout. We do call 4561 // requestLayout() when we get contentSizeChanged(). But the View 4562 // system won't call onSizeChanged if the dimension is not changed. 4563 // In this case, we need to call sendViewSizeZoom() explicitly to 4564 // notify the WebKit about the new dimensions. 4565 sendViewSizeZoom(false); 4566 } 4567 return changed; 4568 } 4569 4570 @Override 4571 protected void onSizeChanged(int w, int h, int ow, int oh) { 4572 super.onSizeChanged(w, h, ow, oh); 4573 4574 // adjust the max viewport width depending on the view dimensions. This 4575 // is to ensure the scaling is not going insane. So do not shrink it if 4576 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4577 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 4578 if (newMaxViewportWidth > sMaxViewportWidth) { 4579 sMaxViewportWidth = newMaxViewportWidth; 4580 } 4581 4582 mZoomManager.onSizeChanged(w, h, ow, oh); 4583 } 4584 4585 @Override 4586 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4587 super.onScrollChanged(l, t, oldl, oldt); 4588 sendOurVisibleRect(); 4589 // update WebKit if visible title bar height changed. The logic is same 4590 // as getVisibleTitleHeight. 4591 int titleHeight = getTitleHeight(); 4592 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4593 sendViewSizeZoom(false); 4594 } 4595 } 4596 4597 @Override 4598 public boolean dispatchKeyEvent(KeyEvent event) { 4599 boolean dispatch = true; 4600 4601 // Textfields, plugins, and contentEditable nodes need to receive the 4602 // shift up key even if another key was released while the shift key 4603 // was held down. 4604 if (!inEditingMode() && (mNativeClass == 0 4605 || !nativePageShouldHandleShiftAndArrows())) { 4606 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4607 mGotKeyDown = true; 4608 } else { 4609 if (!mGotKeyDown) { 4610 /* 4611 * We got a key up for which we were not the recipient of 4612 * the original key down. Don't give it to the view. 4613 */ 4614 dispatch = false; 4615 } 4616 mGotKeyDown = false; 4617 } 4618 } 4619 4620 if (dispatch) { 4621 return super.dispatchKeyEvent(event); 4622 } else { 4623 // We didn't dispatch, so let something else handle the key 4624 return false; 4625 } 4626 } 4627 4628 // Here are the snap align logic: 4629 // 1. If it starts nearly horizontally or vertically, snap align; 4630 // 2. If there is a dramitic direction change, let it go; 4631 // 3. If there is a same direction back and forth, lock it. 4632 4633 // adjustable parameters 4634 private int mMinLockSnapReverseDistance; 4635 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4636 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4637 4638 private static int sign(float x) { 4639 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4640 } 4641 4642 // if the page can scroll <= this value, we won't allow the drag tracker 4643 // to have any effect. 4644 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4645 4646 private class DragTrackerHandler { 4647 private final DragTracker mProxy; 4648 private final float mStartY, mStartX; 4649 private final float mMinDY, mMinDX; 4650 private final float mMaxDY, mMaxDX; 4651 private float mCurrStretchY, mCurrStretchX; 4652 private int mSX, mSY; 4653 private Interpolator mInterp; 4654 private float[] mXY = new float[2]; 4655 4656 // inner (non-state) classes can't have enums :( 4657 private static final int DRAGGING_STATE = 0; 4658 private static final int ANIMATING_STATE = 1; 4659 private static final int FINISHED_STATE = 2; 4660 private int mState; 4661 4662 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4663 mProxy = proxy; 4664 4665 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4666 int viewTop = getScrollY(); 4667 int viewBottom = viewTop + getHeight(); 4668 4669 mStartY = y; 4670 mMinDY = -viewTop; 4671 mMaxDY = docBottom - viewBottom; 4672 4673 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4674 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4675 " up/down= " + mMinDY + " " + mMaxDY); 4676 } 4677 4678 int docRight = computeHorizontalScrollRange(); 4679 int viewLeft = getScrollX(); 4680 int viewRight = viewLeft + getWidth(); 4681 mStartX = x; 4682 mMinDX = -viewLeft; 4683 mMaxDX = docRight - viewRight; 4684 4685 mState = DRAGGING_STATE; 4686 mProxy.onStartDrag(x, y); 4687 4688 // ensure we buildBitmap at least once 4689 mSX = -99999; 4690 } 4691 4692 private float computeStretch(float delta, float min, float max) { 4693 float stretch = 0; 4694 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4695 if (delta < min) { 4696 stretch = delta - min; 4697 } else if (delta > max) { 4698 stretch = delta - max; 4699 } 4700 } 4701 return stretch; 4702 } 4703 4704 public void dragTo(float x, float y) { 4705 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4706 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4707 4708 if ((mSnapScrollMode & SNAP_X) != 0) { 4709 sy = 0; 4710 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4711 sx = 0; 4712 } 4713 4714 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4715 mCurrStretchX = sx; 4716 mCurrStretchY = sy; 4717 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4718 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4719 " " + sy); 4720 } 4721 if (mProxy.onStretchChange(sx, sy)) { 4722 invalidate(); 4723 } 4724 } 4725 } 4726 4727 public void stopDrag() { 4728 final int DURATION = 200; 4729 int now = (int)SystemClock.uptimeMillis(); 4730 mInterp = new Interpolator(2); 4731 mXY[0] = mCurrStretchX; 4732 mXY[1] = mCurrStretchY; 4733 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4734 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4735 mInterp.setKeyFrame(0, now, mXY, blend); 4736 float[] zerozero = new float[] { 0, 0 }; 4737 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4738 mState = ANIMATING_STATE; 4739 4740 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4741 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4742 } 4743 } 4744 4745 // Call this after each draw. If it ruturns null, the tracker is done 4746 public boolean isFinished() { 4747 return mState == FINISHED_STATE; 4748 } 4749 4750 private int hiddenHeightOfTitleBar() { 4751 return getTitleHeight() - getVisibleTitleHeight(); 4752 } 4753 4754 // need a way to know if 565 or 8888 is the right config for 4755 // capturing the display and giving it to the drag proxy 4756 private Bitmap.Config offscreenBitmapConfig() { 4757 // hard code 565 for now 4758 return Bitmap.Config.RGB_565; 4759 } 4760 4761 /* If the tracker draws, then this returns true, otherwise it will 4762 return false, and draw nothing. 4763 */ 4764 public boolean draw(Canvas canvas) { 4765 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4766 int sx = getScrollX(); 4767 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4768 if (mSX != sx || mSY != sy) { 4769 buildBitmap(sx, sy); 4770 mSX = sx; 4771 mSY = sy; 4772 } 4773 4774 if (mState == ANIMATING_STATE) { 4775 Interpolator.Result result = mInterp.timeToValues(mXY); 4776 if (result == Interpolator.Result.FREEZE_END) { 4777 mState = FINISHED_STATE; 4778 return false; 4779 } else { 4780 mProxy.onStretchChange(mXY[0], mXY[1]); 4781 invalidate(); 4782 // fall through to the draw 4783 } 4784 } 4785 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4786 canvas.translate(sx, sy); 4787 mProxy.onDraw(canvas); 4788 canvas.restoreToCount(count); 4789 return true; 4790 } 4791 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4792 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4793 mCurrStretchX + " " + mCurrStretchY); 4794 } 4795 return false; 4796 } 4797 4798 private void buildBitmap(int sx, int sy) { 4799 int w = getWidth(); 4800 int h = getViewHeight(); 4801 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4802 Canvas canvas = new Canvas(bm); 4803 canvas.translate(-sx, -sy); 4804 drawContent(canvas); 4805 4806 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4807 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4808 " " + sy + " " + w + " " + h); 4809 } 4810 mProxy.onBitmapChange(bm); 4811 } 4812 } 4813 4814 /** @hide */ 4815 public static class DragTracker { 4816 public void onStartDrag(float x, float y) {} 4817 public boolean onStretchChange(float sx, float sy) { 4818 // return true to have us inval the view 4819 return false; 4820 } 4821 public void onStopDrag() {} 4822 public void onBitmapChange(Bitmap bm) {} 4823 public void onDraw(Canvas canvas) {} 4824 } 4825 4826 /** @hide */ 4827 public DragTracker getDragTracker() { 4828 return mDragTracker; 4829 } 4830 4831 /** @hide */ 4832 public void setDragTracker(DragTracker tracker) { 4833 mDragTracker = tracker; 4834 } 4835 4836 private DragTracker mDragTracker; 4837 private DragTrackerHandler mDragTrackerHandler; 4838 4839 private boolean hitFocusedPlugin(int contentX, int contentY) { 4840 if (DebugFlags.WEB_VIEW) { 4841 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4842 Rect r = nativeFocusNodeBounds(); 4843 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4844 + ", " + r.right + ", " + r.bottom + ")"); 4845 } 4846 return nativeFocusIsPlugin() 4847 && nativeFocusNodeBounds().contains(contentX, contentY); 4848 } 4849 4850 private boolean shouldForwardTouchEvent() { 4851 return mFullScreenHolder != null || (mForwardTouchEvents 4852 && !mSelectingText 4853 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4854 } 4855 4856 private boolean inFullScreenMode() { 4857 return mFullScreenHolder != null; 4858 } 4859 4860 void onPinchToZoomAnimationStart() { 4861 // cancel the single touch handling 4862 cancelTouch(); 4863 onZoomAnimationStart(); 4864 } 4865 4866 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 4867 onZoomAnimationEnd(); 4868 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 4869 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 4870 // as it may trigger the unwanted fling. 4871 mTouchMode = TOUCH_PINCH_DRAG; 4872 mConfirmMove = true; 4873 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 4874 } 4875 4876 private void startScrollingLayer(float gestureX, float gestureY) { 4877 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4878 int contentX = viewToContentX((int) gestureX + mScrollX); 4879 int contentY = viewToContentY((int) gestureY + mScrollY); 4880 mScrollingLayer = nativeScrollableLayer(contentX, contentY); 4881 if (mScrollingLayer != 0) { 4882 mTouchMode = TOUCH_DRAG_LAYER_MODE; 4883 } 4884 } 4885 } 4886 4887 // 1/(density * density) used to compute the distance between points. 4888 // Computed in init(). 4889 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 4890 4891 // The distance between two points reported in onTouchEvent scaled by the 4892 // density of the screen. 4893 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 4894 4895 @Override 4896 public boolean onTouchEvent(MotionEvent ev) { 4897 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4898 return false; 4899 } 4900 4901 if (DebugFlags.WEB_VIEW) { 4902 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4903 + mTouchMode); 4904 } 4905 4906 int action = ev.getAction(); 4907 float x = ev.getX(); 4908 float y = ev.getY(); 4909 long eventTime = ev.getEventTime(); 4910 4911 final ScaleGestureDetector detector = 4912 mZoomManager.getMultiTouchGestureDetector(); 4913 boolean skipScaleGesture = false; 4914 // Set to the mid-point of a two-finger gesture used to detect if the 4915 // user has touched a layer. 4916 float gestureX = x; 4917 float gestureY = y; 4918 if (detector == null || !detector.isInProgress()) { 4919 // The gesture for scrolling a layer is two fingers close together. 4920 // FIXME: we may consider giving WebKit an option to handle 4921 // multi-touch events later. 4922 if (ev.getPointerCount() > 1) { 4923 float dx = ev.getX(1) - ev.getX(0); 4924 float dy = ev.getY(1) - ev.getY(0); 4925 float dist = (dx * dx + dy * dy) * 4926 DRAG_LAYER_INVERSE_DENSITY_SQUARED; 4927 // Use the approximate center to determine if the gesture is in 4928 // a layer. 4929 gestureX = ev.getX(0) + (dx * .5f); 4930 gestureY = ev.getY(0) + (dy * .5f); 4931 // Now use a consistent point for tracking movement. 4932 if (ev.getX(0) < ev.getX(1)) { 4933 x = ev.getX(0); 4934 y = ev.getY(0); 4935 } else { 4936 x = ev.getX(1); 4937 y = ev.getY(1); 4938 } 4939 action = ev.getActionMasked(); 4940 if (dist < DRAG_LAYER_FINGER_DISTANCE) { 4941 skipScaleGesture = true; 4942 } else if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 4943 // Fingers moved too far apart while dragging, the user 4944 // might be trying to zoom. 4945 mTouchMode = TOUCH_INIT_MODE; 4946 } 4947 } 4948 } 4949 4950 // FIXME: we may consider to give WebKit an option to handle multi-touch 4951 // events later. 4952 if (mZoomManager.supportsMultiTouchZoom() && ev.getPointerCount() > 1 && 4953 mTouchMode != TOUCH_DRAG_LAYER_MODE && !skipScaleGesture) { 4954 4955 // if the page disallows zoom, skip multi-pointer action 4956 if (!mZoomManager.supportsPanDuringZoom() && mZoomManager.isZoomScaleFixed()) { 4957 return true; 4958 } 4959 4960 if (!detector.isInProgress() && 4961 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 4962 // Insert a fake pointer down event in order to start 4963 // the zoom scale detector. 4964 MotionEvent temp = MotionEvent.obtain(ev); 4965 // Clear the original event and set it to 4966 // ACTION_POINTER_DOWN. 4967 try { 4968 temp.setAction(temp.getAction() & 4969 ~MotionEvent.ACTION_MASK | 4970 MotionEvent.ACTION_POINTER_DOWN); 4971 detector.onTouchEvent(temp); 4972 } finally { 4973 temp.recycle(); 4974 } 4975 } 4976 4977 detector.onTouchEvent(ev); 4978 4979 if (detector.isInProgress()) { 4980 mLastTouchTime = eventTime; 4981 cancelLongPress(); 4982 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4983 if (!mZoomManager.supportsPanDuringZoom()) { 4984 return true; 4985 } 4986 mTouchMode = TOUCH_DRAG_MODE; 4987 if (mVelocityTracker == null) { 4988 mVelocityTracker = VelocityTracker.obtain(); 4989 } 4990 } 4991 4992 x = detector.getFocusX(); 4993 y = detector.getFocusY(); 4994 action = ev.getAction() & MotionEvent.ACTION_MASK; 4995 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4996 cancelTouch(); 4997 action = MotionEvent.ACTION_DOWN; 4998 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4999 // set mLastTouchX/Y to the remaining point 5000 mLastTouchX = x; 5001 mLastTouchY = y; 5002 } else if (action == MotionEvent.ACTION_MOVE) { 5003 // negative x or y indicate it is on the edge, skip it. 5004 if (x < 0 || y < 0) { 5005 return true; 5006 } 5007 } 5008 } 5009 5010 // Due to the touch screen edge effect, a touch closer to the edge 5011 // always snapped to the edge. As getViewWidth() can be different from 5012 // getWidth() due to the scrollbar, adjusting the point to match 5013 // getViewWidth(). Same applied to the height. 5014 x = Math.min(x, getViewWidth() - 1); 5015 y = Math.min(y, getViewHeightWithTitle() - 1); 5016 5017 float fDeltaX = mLastTouchX - x; 5018 float fDeltaY = mLastTouchY - y; 5019 int deltaX = (int) fDeltaX; 5020 int deltaY = (int) fDeltaY; 5021 int contentX = viewToContentX((int) x + mScrollX); 5022 int contentY = viewToContentY((int) y + mScrollY); 5023 5024 switch (action) { 5025 case MotionEvent.ACTION_DOWN: { 5026 mPreventDefault = PREVENT_DEFAULT_NO; 5027 mConfirmMove = false; 5028 if (!mScroller.isFinished()) { 5029 // stop the current scroll animation, but if this is 5030 // the start of a fling, allow it to add to the current 5031 // fling's velocity 5032 mScroller.abortAnimation(); 5033 mTouchMode = TOUCH_DRAG_START_MODE; 5034 mConfirmMove = true; 5035 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5036 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5037 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5038 if (getSettings().supportTouchOnly()) { 5039 removeTouchHighlight(true); 5040 } 5041 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5042 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5043 } else { 5044 // commit the short press action for the previous tap 5045 doShortPress(); 5046 mTouchMode = TOUCH_INIT_MODE; 5047 mDeferTouchProcess = (!inFullScreenMode() 5048 && mForwardTouchEvents) ? hitFocusedPlugin( 5049 contentX, contentY) : false; 5050 } 5051 } else { // the normal case 5052 mTouchMode = TOUCH_INIT_MODE; 5053 mDeferTouchProcess = (!inFullScreenMode() 5054 && mForwardTouchEvents) ? hitFocusedPlugin( 5055 contentX, contentY) : false; 5056 mWebViewCore.sendMessage( 5057 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5058 if (getSettings().supportTouchOnly()) { 5059 TouchHighlightData data = new TouchHighlightData(); 5060 data.mX = contentX; 5061 data.mY = contentY; 5062 data.mSlop = viewToContentDimension(mNavSlop); 5063 mWebViewCore.sendMessageDelayed( 5064 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5065 ViewConfiguration.getTapTimeout()); 5066 if (DEBUG_TOUCH_HIGHLIGHT) { 5067 if (getSettings().getNavDump()) { 5068 mTouchHighlightX = (int) x + mScrollX; 5069 mTouchHighlightY = (int) y + mScrollY; 5070 mPrivateHandler.postDelayed(new Runnable() { 5071 public void run() { 5072 mTouchHighlightX = mTouchHighlightY = 0; 5073 invalidate(); 5074 } 5075 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5076 } 5077 } 5078 } 5079 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5080 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5081 (eventTime - mLastTouchUpTime), eventTime); 5082 } 5083 if (mSelectingText) { 5084 mDrawSelectionPointer = false; 5085 mSelectionStarted = nativeStartSelection(contentX, contentY); 5086 if (DebugFlags.WEB_VIEW) { 5087 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5088 } 5089 invalidate(); 5090 } 5091 } 5092 // Trigger the link 5093 if (mTouchMode == TOUCH_INIT_MODE 5094 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5095 mPrivateHandler.sendEmptyMessageDelayed( 5096 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5097 mPrivateHandler.sendEmptyMessageDelayed( 5098 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5099 if (inFullScreenMode() || mDeferTouchProcess) { 5100 mPreventDefault = PREVENT_DEFAULT_YES; 5101 } else if (mForwardTouchEvents) { 5102 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5103 } else { 5104 mPreventDefault = PREVENT_DEFAULT_NO; 5105 } 5106 // pass the touch events from UI thread to WebCore thread 5107 if (shouldForwardTouchEvent()) { 5108 TouchEventData ted = new TouchEventData(); 5109 ted.mAction = action; 5110 ted.mX = contentX; 5111 ted.mY = contentY; 5112 ted.mMetaState = ev.getMetaState(); 5113 ted.mReprocess = mDeferTouchProcess; 5114 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5115 if (mDeferTouchProcess) { 5116 // still needs to set them for compute deltaX/Y 5117 mLastTouchX = x; 5118 mLastTouchY = y; 5119 break; 5120 } 5121 if (!inFullScreenMode()) { 5122 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5123 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5124 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5125 action, 0), TAP_TIMEOUT); 5126 } 5127 } 5128 } 5129 startTouch(x, y, eventTime); 5130 break; 5131 } 5132 case MotionEvent.ACTION_MOVE: { 5133 boolean firstMove = false; 5134 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5135 >= mTouchSlopSquare) { 5136 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5137 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5138 mConfirmMove = true; 5139 firstMove = true; 5140 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5141 mTouchMode = TOUCH_INIT_MODE; 5142 } 5143 if (getSettings().supportTouchOnly()) { 5144 removeTouchHighlight(true); 5145 } 5146 } 5147 // pass the touch events from UI thread to WebCore thread 5148 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5149 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5150 TouchEventData ted = new TouchEventData(); 5151 ted.mAction = action; 5152 ted.mX = contentX; 5153 ted.mY = contentY; 5154 ted.mMetaState = ev.getMetaState(); 5155 ted.mReprocess = mDeferTouchProcess; 5156 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5157 mLastSentTouchTime = eventTime; 5158 if (mDeferTouchProcess) { 5159 break; 5160 } 5161 if (firstMove && !inFullScreenMode()) { 5162 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5163 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5164 action, 0), TAP_TIMEOUT); 5165 } 5166 } 5167 if (mTouchMode == TOUCH_DONE_MODE 5168 || mPreventDefault == PREVENT_DEFAULT_YES) { 5169 // no dragging during scroll zoom animation, or when prevent 5170 // default is yes 5171 break; 5172 } 5173 if (mVelocityTracker == null) { 5174 Log.e(LOGTAG, "Got null mVelocityTracker when " 5175 + "mPreventDefault = " + mPreventDefault 5176 + " mDeferTouchProcess = " + mDeferTouchProcess 5177 + " mTouchMode = " + mTouchMode); 5178 } 5179 mVelocityTracker.addMovement(ev); 5180 if (mSelectingText && mSelectionStarted) { 5181 if (DebugFlags.WEB_VIEW) { 5182 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5183 } 5184 nativeExtendSelection(contentX, contentY); 5185 invalidate(); 5186 break; 5187 } 5188 5189 if (mTouchMode != TOUCH_DRAG_MODE && 5190 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5191 5192 if (!mConfirmMove) { 5193 break; 5194 } 5195 5196 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5197 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5198 // track mLastTouchTime as we may need to do fling at 5199 // ACTION_UP 5200 mLastTouchTime = eventTime; 5201 break; 5202 } 5203 5204 // Only lock dragging to one axis if we don't have a scale in progress. 5205 // Scaling implies free-roaming movement. Note this is only ever a question 5206 // if mZoomManager.supportsPanDuringZoom() is true. 5207 if (detector != null && !detector.isInProgress()) { 5208 // if it starts nearly horizontal or vertical, enforce it 5209 int ax = Math.abs(deltaX); 5210 int ay = Math.abs(deltaY); 5211 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5212 mSnapScrollMode = SNAP_X; 5213 mSnapPositive = deltaX > 0; 5214 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5215 mSnapScrollMode = SNAP_Y; 5216 mSnapPositive = deltaY > 0; 5217 } 5218 } 5219 5220 mTouchMode = TOUCH_DRAG_MODE; 5221 mLastTouchX = x; 5222 mLastTouchY = y; 5223 fDeltaX = 0.0f; 5224 fDeltaY = 0.0f; 5225 deltaX = 0; 5226 deltaY = 0; 5227 5228 if (skipScaleGesture) { 5229 startScrollingLayer(gestureX, gestureY); 5230 } 5231 startDrag(); 5232 } 5233 5234 if (mDragTrackerHandler != null) { 5235 mDragTrackerHandler.dragTo(x, y); 5236 } 5237 5238 // do pan 5239 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5240 int newScrollX = pinLocX(mScrollX + deltaX); 5241 int newDeltaX = newScrollX - mScrollX; 5242 if (deltaX != newDeltaX) { 5243 deltaX = newDeltaX; 5244 fDeltaX = (float) newDeltaX; 5245 } 5246 int newScrollY = pinLocY(mScrollY + deltaY); 5247 int newDeltaY = newScrollY - mScrollY; 5248 if (deltaY != newDeltaY) { 5249 deltaY = newDeltaY; 5250 fDeltaY = (float) newDeltaY; 5251 } 5252 } 5253 boolean done = false; 5254 boolean keepScrollBarsVisible = false; 5255 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5256 mLastTouchX = x; 5257 mLastTouchY = y; 5258 keepScrollBarsVisible = done = true; 5259 } else { 5260 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5261 int ax = Math.abs(deltaX); 5262 int ay = Math.abs(deltaY); 5263 if (mSnapScrollMode == SNAP_X) { 5264 // radical change means getting out of snap mode 5265 if (ay > MAX_SLOPE_FOR_DIAG * ax 5266 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5267 mSnapScrollMode = SNAP_NONE; 5268 } 5269 // reverse direction means lock in the snap mode 5270 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5271 (mSnapPositive 5272 ? deltaX < -mMinLockSnapReverseDistance 5273 : deltaX > mMinLockSnapReverseDistance)) { 5274 mSnapScrollMode |= SNAP_LOCK; 5275 } 5276 } else { 5277 // radical change means getting out of snap mode 5278 if (ax > MAX_SLOPE_FOR_DIAG * ay 5279 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5280 mSnapScrollMode = SNAP_NONE; 5281 } 5282 // reverse direction means lock in the snap mode 5283 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5284 (mSnapPositive 5285 ? deltaY < -mMinLockSnapReverseDistance 5286 : deltaY > mMinLockSnapReverseDistance)) { 5287 mSnapScrollMode |= SNAP_LOCK; 5288 } 5289 } 5290 } 5291 if (mSnapScrollMode != SNAP_NONE) { 5292 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5293 deltaY = 0; 5294 } else { 5295 deltaX = 0; 5296 } 5297 } 5298 if ((deltaX | deltaY) != 0) { 5299 if (deltaX != 0) { 5300 mLastTouchX = x; 5301 } 5302 if (deltaY != 0) { 5303 mLastTouchY = y; 5304 } 5305 mHeldMotionless = MOTIONLESS_FALSE; 5306 } else { 5307 // keep the scrollbar on the screen even there is no 5308 // scroll 5309 mLastTouchX = x; 5310 mLastTouchY = y; 5311 keepScrollBarsVisible = true; 5312 } 5313 mLastTouchTime = eventTime; 5314 mUserScroll = true; 5315 } 5316 5317 doDrag(deltaX, deltaY); 5318 5319 // Turn off scrollbars when dragging a layer. 5320 if (keepScrollBarsVisible && 5321 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5322 if (mHeldMotionless != MOTIONLESS_TRUE) { 5323 mHeldMotionless = MOTIONLESS_TRUE; 5324 invalidate(); 5325 } 5326 // keep the scrollbar on the screen even there is no scroll 5327 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5328 false); 5329 // return false to indicate that we can't pan out of the 5330 // view space 5331 return !done; 5332 } 5333 break; 5334 } 5335 case MotionEvent.ACTION_UP: { 5336 if (!isFocused()) requestFocus(); 5337 // pass the touch events from UI thread to WebCore thread 5338 if (shouldForwardTouchEvent()) { 5339 TouchEventData ted = new TouchEventData(); 5340 ted.mAction = action; 5341 ted.mX = contentX; 5342 ted.mY = contentY; 5343 ted.mMetaState = ev.getMetaState(); 5344 ted.mReprocess = mDeferTouchProcess; 5345 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5346 } 5347 mLastTouchUpTime = eventTime; 5348 switch (mTouchMode) { 5349 case TOUCH_DOUBLE_TAP_MODE: // double tap 5350 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5351 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5352 if (inFullScreenMode() || mDeferTouchProcess) { 5353 TouchEventData ted = new TouchEventData(); 5354 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5355 ted.mX = contentX; 5356 ted.mY = contentY; 5357 ted.mMetaState = ev.getMetaState(); 5358 ted.mReprocess = mDeferTouchProcess; 5359 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5360 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5361 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5362 mTouchMode = TOUCH_DONE_MODE; 5363 } 5364 break; 5365 case TOUCH_INIT_MODE: // tap 5366 case TOUCH_SHORTPRESS_START_MODE: 5367 case TOUCH_SHORTPRESS_MODE: 5368 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5369 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5370 if (mConfirmMove) { 5371 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5372 " WebCore's response for touch down."); 5373 if (mPreventDefault != PREVENT_DEFAULT_YES 5374 && (computeMaxScrollX() > 0 5375 || computeMaxScrollY() > 0)) { 5376 // If the user has performed a very quick touch 5377 // sequence it is possible that we may get here 5378 // before WebCore has had a chance to process the events. 5379 // In this case, any call to preventDefault in the 5380 // JS touch handler will not have been executed yet. 5381 // Hence we will see both the UI (now) and WebCore 5382 // (when context switches) handling the event, 5383 // regardless of whether the web developer actually 5384 // doeses preventDefault in their touch handler. This 5385 // is the nature of our asynchronous touch model. 5386 5387 // we will not rewrite drag code here, but we 5388 // will try fling if it applies. 5389 WebViewCore.reducePriority(); 5390 // to get better performance, pause updating the 5391 // picture 5392 WebViewCore.pauseUpdatePicture(mWebViewCore); 5393 // fall through to TOUCH_DRAG_MODE 5394 } else { 5395 // WebKit may consume the touch event and modify 5396 // DOM. drawContentPicture() will be called with 5397 // animateSroll as true for better performance. 5398 // Force redraw in high-quality. 5399 invalidate(); 5400 break; 5401 } 5402 } else { 5403 if (mSelectingText) { 5404 // tapping on selection or controls does nothing 5405 if (!nativeHitSelection(contentX, contentY)) { 5406 selectionDone(); 5407 } 5408 break; 5409 } 5410 // only trigger double tap if the WebView is 5411 // scalable 5412 if (mTouchMode == TOUCH_INIT_MODE 5413 && (canZoomIn() || canZoomOut())) { 5414 mPrivateHandler.sendEmptyMessageDelayed( 5415 RELEASE_SINGLE_TAP, ViewConfiguration 5416 .getDoubleTapTimeout()); 5417 } else { 5418 doShortPress(); 5419 } 5420 break; 5421 } 5422 case TOUCH_DRAG_MODE: 5423 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5424 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5425 // if the user waits a while w/o moving before the 5426 // up, we don't want to do a fling 5427 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5428 if (mVelocityTracker == null) { 5429 Log.e(LOGTAG, "Got null mVelocityTracker when " 5430 + "mPreventDefault = " 5431 + mPreventDefault 5432 + " mDeferTouchProcess = " 5433 + mDeferTouchProcess); 5434 } 5435 mVelocityTracker.addMovement(ev); 5436 // set to MOTIONLESS_IGNORE so that it won't keep 5437 // removing and sending message in 5438 // drawCoreAndCursorRing() 5439 mHeldMotionless = MOTIONLESS_IGNORE; 5440 doFling(); 5441 break; 5442 } 5443 // redraw in high-quality, as we're done dragging 5444 mHeldMotionless = MOTIONLESS_TRUE; 5445 invalidate(); 5446 // fall through 5447 case TOUCH_DRAG_START_MODE: 5448 case TOUCH_DRAG_LAYER_MODE: 5449 // TOUCH_DRAG_START_MODE should not happen for the real 5450 // device as we almost certain will get a MOVE. But this 5451 // is possible on emulator. 5452 mLastVelocity = 0; 5453 WebViewCore.resumePriority(); 5454 WebViewCore.resumeUpdatePicture(mWebViewCore); 5455 break; 5456 } 5457 stopTouch(); 5458 break; 5459 } 5460 case MotionEvent.ACTION_CANCEL: { 5461 if (mTouchMode == TOUCH_DRAG_MODE) { 5462 invalidate(); 5463 } 5464 cancelWebCoreTouchEvent(contentX, contentY, false); 5465 cancelTouch(); 5466 break; 5467 } 5468 } 5469 return true; 5470 } 5471 5472 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5473 if (shouldForwardTouchEvent()) { 5474 if (removeEvents) { 5475 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5476 } 5477 TouchEventData ted = new TouchEventData(); 5478 ted.mX = x; 5479 ted.mY = y; 5480 ted.mAction = MotionEvent.ACTION_CANCEL; 5481 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5482 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5483 } 5484 } 5485 5486 private void startTouch(float x, float y, long eventTime) { 5487 // Remember where the motion event started 5488 mLastTouchX = x; 5489 mLastTouchY = y; 5490 mLastTouchTime = eventTime; 5491 mVelocityTracker = VelocityTracker.obtain(); 5492 mSnapScrollMode = SNAP_NONE; 5493 if (mDragTracker != null) { 5494 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5495 } 5496 } 5497 5498 private void startDrag() { 5499 WebViewCore.reducePriority(); 5500 // to get better performance, pause updating the picture 5501 WebViewCore.pauseUpdatePicture(mWebViewCore); 5502 if (!mDragFromTextInput) { 5503 nativeHideCursor(); 5504 } 5505 5506 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5507 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 5508 mZoomManager.invokeZoomPicker(); 5509 } 5510 } 5511 5512 private void doDrag(int deltaX, int deltaY) { 5513 if ((deltaX | deltaY) != 0) { 5514 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5515 deltaX = viewToContentDimension(deltaX); 5516 deltaY = viewToContentDimension(deltaY); 5517 if (nativeScrollLayer(mScrollingLayer, deltaX, deltaY)) { 5518 invalidate(); 5519 } 5520 return; 5521 } 5522 scrollBy(deltaX, deltaY); 5523 } 5524 mZoomManager.keepZoomPickerVisible(); 5525 } 5526 5527 private void stopTouch() { 5528 if (mDragTrackerHandler != null) { 5529 mDragTrackerHandler.stopDrag(); 5530 } 5531 // we also use mVelocityTracker == null to tell us that we are 5532 // not "moving around", so we can take the slower/prettier 5533 // mode in the drawing code 5534 if (mVelocityTracker != null) { 5535 mVelocityTracker.recycle(); 5536 mVelocityTracker = null; 5537 } 5538 } 5539 5540 private void cancelTouch() { 5541 if (mDragTrackerHandler != null) { 5542 mDragTrackerHandler.stopDrag(); 5543 } 5544 // we also use mVelocityTracker == null to tell us that we are 5545 // not "moving around", so we can take the slower/prettier 5546 // mode in the drawing code 5547 if (mVelocityTracker != null) { 5548 mVelocityTracker.recycle(); 5549 mVelocityTracker = null; 5550 } 5551 if (mTouchMode == TOUCH_DRAG_MODE || 5552 mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5553 WebViewCore.resumePriority(); 5554 WebViewCore.resumeUpdatePicture(mWebViewCore); 5555 } 5556 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5557 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5558 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5559 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5560 if (getSettings().supportTouchOnly()) { 5561 removeTouchHighlight(true); 5562 } 5563 mHeldMotionless = MOTIONLESS_TRUE; 5564 mTouchMode = TOUCH_DONE_MODE; 5565 nativeHideCursor(); 5566 } 5567 5568 private long mTrackballFirstTime = 0; 5569 private long mTrackballLastTime = 0; 5570 private float mTrackballRemainsX = 0.0f; 5571 private float mTrackballRemainsY = 0.0f; 5572 private int mTrackballXMove = 0; 5573 private int mTrackballYMove = 0; 5574 private boolean mSelectingText = false; 5575 private boolean mSelectionStarted = false; 5576 private boolean mExtendSelection = false; 5577 private boolean mDrawSelectionPointer = false; 5578 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5579 private static final int TRACKBALL_TIMEOUT = 200; 5580 private static final int TRACKBALL_WAIT = 100; 5581 private static final int TRACKBALL_SCALE = 400; 5582 private static final int TRACKBALL_SCROLL_COUNT = 5; 5583 private static final int TRACKBALL_MOVE_COUNT = 10; 5584 private static final int TRACKBALL_MULTIPLIER = 3; 5585 private static final int SELECT_CURSOR_OFFSET = 16; 5586 private int mSelectX = 0; 5587 private int mSelectY = 0; 5588 private boolean mFocusSizeChanged = false; 5589 private boolean mShiftIsPressed = false; 5590 private boolean mTrackballDown = false; 5591 private long mTrackballUpTime = 0; 5592 private long mLastCursorTime = 0; 5593 private Rect mLastCursorBounds; 5594 5595 // Set by default; BrowserActivity clears to interpret trackball data 5596 // directly for movement. Currently, the framework only passes 5597 // arrow key events, not trackball events, from one child to the next 5598 private boolean mMapTrackballToArrowKeys = true; 5599 5600 public void setMapTrackballToArrowKeys(boolean setMap) { 5601 mMapTrackballToArrowKeys = setMap; 5602 } 5603 5604 void resetTrackballTime() { 5605 mTrackballLastTime = 0; 5606 } 5607 5608 @Override 5609 public boolean onTrackballEvent(MotionEvent ev) { 5610 long time = ev.getEventTime(); 5611 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5612 if (ev.getY() > 0) pageDown(true); 5613 if (ev.getY() < 0) pageUp(true); 5614 return true; 5615 } 5616 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5617 if (mSelectingText) { 5618 return true; // discard press if copy in progress 5619 } 5620 mTrackballDown = true; 5621 if (mNativeClass == 0) { 5622 return false; 5623 } 5624 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5625 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5626 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5627 nativeSelectBestAt(mLastCursorBounds); 5628 } 5629 if (DebugFlags.WEB_VIEW) { 5630 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5631 + " time=" + time 5632 + " mLastCursorTime=" + mLastCursorTime); 5633 } 5634 if (isInTouchMode()) requestFocusFromTouch(); 5635 return false; // let common code in onKeyDown at it 5636 } 5637 if (ev.getAction() == MotionEvent.ACTION_UP) { 5638 // LONG_PRESS_CENTER is set in common onKeyDown 5639 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5640 mTrackballDown = false; 5641 mTrackballUpTime = time; 5642 if (mSelectingText) { 5643 if (mExtendSelection) { 5644 copySelection(); 5645 selectionDone(); 5646 } else { 5647 mExtendSelection = true; 5648 nativeSetExtendSelection(); 5649 invalidate(); // draw the i-beam instead of the arrow 5650 } 5651 return true; // discard press if copy in progress 5652 } 5653 if (DebugFlags.WEB_VIEW) { 5654 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5655 + " time=" + time 5656 ); 5657 } 5658 return false; // let common code in onKeyUp at it 5659 } 5660 if ((mMapTrackballToArrowKeys && mShiftIsPressed == false) || 5661 (mAccessibilityInjector != null || mAccessibilityScriptInjected)) { 5662 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5663 return false; 5664 } 5665 if (mTrackballDown) { 5666 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5667 return true; // discard move if trackball is down 5668 } 5669 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5670 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5671 return true; 5672 } 5673 // TODO: alternatively we can do panning as touch does 5674 switchOutDrawHistory(); 5675 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5676 if (DebugFlags.WEB_VIEW) { 5677 Log.v(LOGTAG, "onTrackballEvent time=" 5678 + time + " last=" + mTrackballLastTime); 5679 } 5680 mTrackballFirstTime = time; 5681 mTrackballXMove = mTrackballYMove = 0; 5682 } 5683 mTrackballLastTime = time; 5684 if (DebugFlags.WEB_VIEW) { 5685 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5686 } 5687 mTrackballRemainsX += ev.getX(); 5688 mTrackballRemainsY += ev.getY(); 5689 doTrackball(time); 5690 return true; 5691 } 5692 5693 void moveSelection(float xRate, float yRate) { 5694 if (mNativeClass == 0) 5695 return; 5696 int width = getViewWidth(); 5697 int height = getViewHeight(); 5698 mSelectX += xRate; 5699 mSelectY += yRate; 5700 int maxX = width + mScrollX; 5701 int maxY = height + mScrollY; 5702 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5703 , mSelectX)); 5704 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5705 , mSelectY)); 5706 if (DebugFlags.WEB_VIEW) { 5707 Log.v(LOGTAG, "moveSelection" 5708 + " mSelectX=" + mSelectX 5709 + " mSelectY=" + mSelectY 5710 + " mScrollX=" + mScrollX 5711 + " mScrollY=" + mScrollY 5712 + " xRate=" + xRate 5713 + " yRate=" + yRate 5714 ); 5715 } 5716 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5717 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5718 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5719 : 0; 5720 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5721 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5722 : 0; 5723 pinScrollBy(scrollX, scrollY, true, 0); 5724 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5725 requestRectangleOnScreen(select); 5726 invalidate(); 5727 } 5728 5729 private int scaleTrackballX(float xRate, int width) { 5730 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5731 int nextXMove = xMove; 5732 if (xMove > 0) { 5733 if (xMove > mTrackballXMove) { 5734 xMove -= mTrackballXMove; 5735 } 5736 } else if (xMove < mTrackballXMove) { 5737 xMove -= mTrackballXMove; 5738 } 5739 mTrackballXMove = nextXMove; 5740 return xMove; 5741 } 5742 5743 private int scaleTrackballY(float yRate, int height) { 5744 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5745 int nextYMove = yMove; 5746 if (yMove > 0) { 5747 if (yMove > mTrackballYMove) { 5748 yMove -= mTrackballYMove; 5749 } 5750 } else if (yMove < mTrackballYMove) { 5751 yMove -= mTrackballYMove; 5752 } 5753 mTrackballYMove = nextYMove; 5754 return yMove; 5755 } 5756 5757 private int keyCodeToSoundsEffect(int keyCode) { 5758 switch(keyCode) { 5759 case KeyEvent.KEYCODE_DPAD_UP: 5760 return SoundEffectConstants.NAVIGATION_UP; 5761 case KeyEvent.KEYCODE_DPAD_RIGHT: 5762 return SoundEffectConstants.NAVIGATION_RIGHT; 5763 case KeyEvent.KEYCODE_DPAD_DOWN: 5764 return SoundEffectConstants.NAVIGATION_DOWN; 5765 case KeyEvent.KEYCODE_DPAD_LEFT: 5766 return SoundEffectConstants.NAVIGATION_LEFT; 5767 } 5768 throw new IllegalArgumentException("keyCode must be one of " + 5769 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5770 "KEYCODE_DPAD_LEFT}."); 5771 } 5772 5773 private void doTrackball(long time) { 5774 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5775 if (elapsed == 0) { 5776 elapsed = TRACKBALL_TIMEOUT; 5777 } 5778 float xRate = mTrackballRemainsX * 1000 / elapsed; 5779 float yRate = mTrackballRemainsY * 1000 / elapsed; 5780 int viewWidth = getViewWidth(); 5781 int viewHeight = getViewHeight(); 5782 if (mSelectingText) { 5783 if (!mDrawSelectionPointer) { 5784 // The last selection was made by touch, disabling drawing the 5785 // selection pointer. Allow the trackball to adjust the 5786 // position of the touch control. 5787 mSelectX = contentToViewX(nativeSelectionX()); 5788 mSelectY = contentToViewY(nativeSelectionY()); 5789 mDrawSelectionPointer = mExtendSelection = true; 5790 nativeSetExtendSelection(); 5791 } 5792 moveSelection(scaleTrackballX(xRate, viewWidth), 5793 scaleTrackballY(yRate, viewHeight)); 5794 mTrackballRemainsX = mTrackballRemainsY = 0; 5795 return; 5796 } 5797 float ax = Math.abs(xRate); 5798 float ay = Math.abs(yRate); 5799 float maxA = Math.max(ax, ay); 5800 if (DebugFlags.WEB_VIEW) { 5801 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5802 + " xRate=" + xRate 5803 + " yRate=" + yRate 5804 + " mTrackballRemainsX=" + mTrackballRemainsX 5805 + " mTrackballRemainsY=" + mTrackballRemainsY); 5806 } 5807 int width = mContentWidth - viewWidth; 5808 int height = mContentHeight - viewHeight; 5809 if (width < 0) width = 0; 5810 if (height < 0) height = 0; 5811 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5812 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5813 maxA = Math.max(ax, ay); 5814 int count = Math.max(0, (int) maxA); 5815 int oldScrollX = mScrollX; 5816 int oldScrollY = mScrollY; 5817 if (count > 0) { 5818 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5819 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5820 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5821 KeyEvent.KEYCODE_DPAD_RIGHT; 5822 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5823 if (DebugFlags.WEB_VIEW) { 5824 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5825 + " count=" + count 5826 + " mTrackballRemainsX=" + mTrackballRemainsX 5827 + " mTrackballRemainsY=" + mTrackballRemainsY); 5828 } 5829 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 5830 for (int i = 0; i < count; i++) { 5831 letPageHandleNavKey(selectKeyCode, time, true); 5832 } 5833 letPageHandleNavKey(selectKeyCode, time, false); 5834 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5835 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5836 } 5837 mTrackballRemainsX = mTrackballRemainsY = 0; 5838 } 5839 if (count >= TRACKBALL_SCROLL_COUNT) { 5840 int xMove = scaleTrackballX(xRate, width); 5841 int yMove = scaleTrackballY(yRate, height); 5842 if (DebugFlags.WEB_VIEW) { 5843 Log.v(LOGTAG, "doTrackball pinScrollBy" 5844 + " count=" + count 5845 + " xMove=" + xMove + " yMove=" + yMove 5846 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5847 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5848 ); 5849 } 5850 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5851 xMove = 0; 5852 } 5853 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5854 yMove = 0; 5855 } 5856 if (xMove != 0 || yMove != 0) { 5857 pinScrollBy(xMove, yMove, true, 0); 5858 } 5859 mUserScroll = true; 5860 } 5861 } 5862 5863 private int computeMaxScrollX() { 5864 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5865 } 5866 5867 private int computeMaxScrollY() { 5868 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5869 - getViewHeightWithTitle(), 0); 5870 } 5871 5872 boolean updateScrollCoordinates(int x, int y) { 5873 int oldX = mScrollX; 5874 int oldY = mScrollY; 5875 mScrollX = x; 5876 mScrollY = y; 5877 if (oldX != mScrollX || oldY != mScrollY) { 5878 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 5879 return true; 5880 } else { 5881 return false; 5882 } 5883 } 5884 5885 public void flingScroll(int vx, int vy) { 5886 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5887 computeMaxScrollY()); 5888 invalidate(); 5889 } 5890 5891 private void doFling() { 5892 if (mVelocityTracker == null) { 5893 return; 5894 } 5895 int maxX = computeMaxScrollX(); 5896 int maxY = computeMaxScrollY(); 5897 5898 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5899 int vx = (int) mVelocityTracker.getXVelocity(); 5900 int vy = (int) mVelocityTracker.getYVelocity(); 5901 5902 if (mSnapScrollMode != SNAP_NONE) { 5903 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5904 vy = 0; 5905 } else { 5906 vx = 0; 5907 } 5908 } 5909 if (true /* EMG release: make our fling more like Maps' */) { 5910 // maps cuts their velocity in half 5911 vx = vx * 3 / 4; 5912 vy = vy * 3 / 4; 5913 } 5914 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5915 WebViewCore.resumePriority(); 5916 WebViewCore.resumeUpdatePicture(mWebViewCore); 5917 return; 5918 } 5919 float currentVelocity = mScroller.getCurrVelocity(); 5920 float velocity = (float) Math.hypot(vx, vy); 5921 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 5922 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 5923 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5924 - Math.atan2(vy, vx))); 5925 final float circle = (float) (Math.PI) * 2.0f; 5926 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5927 vx += currentVelocity * mLastVelX / mLastVelocity; 5928 vy += currentVelocity * mLastVelY / mLastVelocity; 5929 velocity = (float) Math.hypot(vx, vy); 5930 if (DebugFlags.WEB_VIEW) { 5931 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5932 } 5933 } else if (DebugFlags.WEB_VIEW) { 5934 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5935 } 5936 } else if (DebugFlags.WEB_VIEW) { 5937 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5938 + " current=" + currentVelocity 5939 + " vx=" + vx + " vy=" + vy 5940 + " maxX=" + maxX + " maxY=" + maxY 5941 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5942 } 5943 mLastVelX = vx; 5944 mLastVelY = vy; 5945 mLastVelocity = velocity; 5946 5947 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5948 final int time = mScroller.getDuration(); 5949 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5950 awakenScrollBars(time); 5951 invalidate(); 5952 } 5953 5954 /** 5955 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5956 * in charge of installing this view to the view hierarchy. This view will 5957 * become visible when the user starts scrolling via touch and fade away if 5958 * the user does not interact with it. 5959 * <p/> 5960 * API version 3 introduces a built-in zoom mechanism that is shown 5961 * automatically by the MapView. This is the preferred approach for 5962 * showing the zoom UI. 5963 * 5964 * @deprecated The built-in zoom mechanism is preferred, see 5965 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5966 */ 5967 @Deprecated 5968 public View getZoomControls() { 5969 if (!getSettings().supportZoom()) { 5970 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5971 return null; 5972 } 5973 return mZoomManager.getExternalZoomPicker(); 5974 } 5975 5976 void dismissZoomControl() { 5977 mZoomManager.dismissZoomPicker(); 5978 } 5979 5980 float getDefaultZoomScale() { 5981 return mZoomManager.getDefaultScale(); 5982 } 5983 5984 /** 5985 * @return TRUE if the WebView can be zoomed in. 5986 */ 5987 public boolean canZoomIn() { 5988 return mZoomManager.canZoomIn(); 5989 } 5990 5991 /** 5992 * @return TRUE if the WebView can be zoomed out. 5993 */ 5994 public boolean canZoomOut() { 5995 return mZoomManager.canZoomOut(); 5996 } 5997 5998 /** 5999 * Perform zoom in in the webview 6000 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6001 */ 6002 public boolean zoomIn() { 6003 return mZoomManager.zoomIn(); 6004 } 6005 6006 /** 6007 * Perform zoom out in the webview 6008 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6009 */ 6010 public boolean zoomOut() { 6011 return mZoomManager.zoomOut(); 6012 } 6013 6014 private void updateSelection() { 6015 if (mNativeClass == 0) { 6016 return; 6017 } 6018 // mLastTouchX and mLastTouchY are the point in the current viewport 6019 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6020 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6021 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6022 contentX + mNavSlop, contentY + mNavSlop); 6023 nativeSelectBestAt(rect); 6024 } 6025 6026 /** 6027 * Scroll the focused text field/area to match the WebTextView 6028 * @param xPercent New x position of the WebTextView from 0 to 1. 6029 * @param y New y position of the WebTextView in view coordinates 6030 */ 6031 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 6032 if (!inEditingMode() || mWebViewCore == null) { 6033 return; 6034 } 6035 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 6036 // Since this position is relative to the top of the text input 6037 // field, we do not need to take the title bar's height into 6038 // consideration. 6039 viewToContentDimension(y), 6040 new Float(xPercent)); 6041 } 6042 6043 /** 6044 * Set our starting point and time for a drag from the WebTextView. 6045 */ 6046 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6047 if (!inEditingMode()) { 6048 return; 6049 } 6050 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 6051 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 6052 mLastTouchTime = eventTime; 6053 if (!mScroller.isFinished()) { 6054 abortAnimation(); 6055 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6056 } 6057 mSnapScrollMode = SNAP_NONE; 6058 mVelocityTracker = VelocityTracker.obtain(); 6059 mTouchMode = TOUCH_DRAG_START_MODE; 6060 } 6061 6062 /** 6063 * Given a motion event from the WebTextView, set its location to our 6064 * coordinates, and handle the event. 6065 */ 6066 /*package*/ boolean textFieldDrag(MotionEvent event) { 6067 if (!inEditingMode()) { 6068 return false; 6069 } 6070 mDragFromTextInput = true; 6071 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6072 (float) (mWebTextView.getTop() - mScrollY)); 6073 boolean result = onTouchEvent(event); 6074 mDragFromTextInput = false; 6075 return result; 6076 } 6077 6078 /** 6079 * Due a touch up from a WebTextView. This will be handled by webkit to 6080 * change the selection. 6081 * @param event MotionEvent in the WebTextView's coordinates. 6082 */ 6083 /*package*/ void touchUpOnTextField(MotionEvent event) { 6084 if (!inEditingMode()) { 6085 return; 6086 } 6087 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6088 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6089 nativeMotionUp(x, y, mNavSlop); 6090 } 6091 6092 /** 6093 * Called when pressing the center key or trackball on a textfield. 6094 */ 6095 /*package*/ void centerKeyPressOnTextField() { 6096 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6097 nativeCursorNodePointer()); 6098 } 6099 6100 private void doShortPress() { 6101 if (mNativeClass == 0) { 6102 return; 6103 } 6104 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6105 return; 6106 } 6107 mTouchMode = TOUCH_DONE_MODE; 6108 switchOutDrawHistory(); 6109 // mLastTouchX and mLastTouchY are the point in the current viewport 6110 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6111 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6112 if (getSettings().supportTouchOnly()) { 6113 removeTouchHighlight(false); 6114 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6115 // use "0" as generation id to inform WebKit to use the same x/y as 6116 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6117 touchUpData.mMoveGeneration = 0; 6118 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6119 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6120 WebViewCore.MotionUpData motionUpData = new WebViewCore 6121 .MotionUpData(); 6122 motionUpData.mFrame = nativeCacheHitFramePointer(); 6123 motionUpData.mNode = nativeCacheHitNodePointer(); 6124 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6125 motionUpData.mX = contentX; 6126 motionUpData.mY = contentY; 6127 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6128 motionUpData); 6129 } else { 6130 doMotionUp(contentX, contentY); 6131 } 6132 } 6133 6134 private void doMotionUp(int contentX, int contentY) { 6135 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 6136 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6137 } 6138 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6139 playSoundEffect(SoundEffectConstants.CLICK); 6140 } 6141 } 6142 6143 /* 6144 * Return true if the view (Plugin) is fully visible and maximized inside 6145 * the WebView. 6146 */ 6147 boolean isPluginFitOnScreen(ViewManager.ChildView view) { 6148 final int viewWidth = getViewWidth(); 6149 final int viewHeight = getViewHeightWithTitle(); 6150 float scale = Math.min((float) viewWidth / view.width, (float) viewHeight / view.height); 6151 scale = mZoomManager.computeScaleWithLimits(scale); 6152 return !mZoomManager.willScaleTriggerZoom(scale) 6153 && contentToViewX(view.x) >= mScrollX 6154 && contentToViewX(view.x + view.width) <= mScrollX + viewWidth 6155 && contentToViewY(view.y) >= mScrollY 6156 && contentToViewY(view.y + view.height) <= mScrollY + viewHeight; 6157 } 6158 6159 /* 6160 * Maximize and center the rectangle, specified in the document coordinate 6161 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6162 * animated scroll to center it. If the zoom needs to be changed, find the 6163 * zoom center and do a smooth zoom transition. 6164 */ 6165 void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 6166 int viewWidth = getViewWidth(); 6167 int viewHeight = getViewHeightWithTitle(); 6168 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 6169 / docHeight); 6170 scale = mZoomManager.computeScaleWithLimits(scale); 6171 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6172 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 6173 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 6174 true, 0); 6175 } else { 6176 float actualScale = mZoomManager.getScale(); 6177 float oldScreenX = docX * actualScale - mScrollX; 6178 float rectViewX = docX * scale; 6179 float rectViewWidth = docWidth * scale; 6180 float newMaxWidth = mContentWidth * scale; 6181 float newScreenX = (viewWidth - rectViewWidth) / 2; 6182 // pin the newX to the WebView 6183 if (newScreenX > rectViewX) { 6184 newScreenX = rectViewX; 6185 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6186 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6187 } 6188 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6189 / (scale - actualScale); 6190 float oldScreenY = docY * actualScale + getTitleHeight() 6191 - mScrollY; 6192 float rectViewY = docY * scale + getTitleHeight(); 6193 float rectViewHeight = docHeight * scale; 6194 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6195 float newScreenY = (viewHeight - rectViewHeight) / 2; 6196 // pin the newY to the WebView 6197 if (newScreenY > rectViewY) { 6198 newScreenY = rectViewY; 6199 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6200 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6201 } 6202 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6203 / (scale - actualScale); 6204 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6205 mZoomManager.startZoomAnimation(scale, false); 6206 } 6207 } 6208 6209 // Called by JNI to handle a touch on a node representing an email address, 6210 // address, or phone number 6211 private void overrideLoading(String url) { 6212 mCallbackProxy.uiOverrideUrlLoading(url); 6213 } 6214 6215 @Override 6216 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6217 // FIXME: If a subwindow is showing find, and the user touches the 6218 // background window, it can steal focus. 6219 if (mFindIsUp) return false; 6220 boolean result = false; 6221 if (inEditingMode()) { 6222 result = mWebTextView.requestFocus(direction, 6223 previouslyFocusedRect); 6224 } else { 6225 result = super.requestFocus(direction, previouslyFocusedRect); 6226 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6227 // For cases such as GMail, where we gain focus from a direction, 6228 // we want to move to the first available link. 6229 // FIXME: If there are no visible links, we may not want to 6230 int fakeKeyDirection = 0; 6231 switch(direction) { 6232 case View.FOCUS_UP: 6233 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6234 break; 6235 case View.FOCUS_DOWN: 6236 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6237 break; 6238 case View.FOCUS_LEFT: 6239 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6240 break; 6241 case View.FOCUS_RIGHT: 6242 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6243 break; 6244 default: 6245 return result; 6246 } 6247 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6248 navHandledKey(fakeKeyDirection, 1, true, 0); 6249 } 6250 } 6251 } 6252 return result; 6253 } 6254 6255 @Override 6256 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6257 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6258 6259 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6260 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6261 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6262 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6263 6264 int measuredHeight = heightSize; 6265 int measuredWidth = widthSize; 6266 6267 // Grab the content size from WebViewCore. 6268 int contentHeight = contentToViewDimension(mContentHeight); 6269 int contentWidth = contentToViewDimension(mContentWidth); 6270 6271// Log.d(LOGTAG, "------- measure " + heightMode); 6272 6273 if (heightMode != MeasureSpec.EXACTLY) { 6274 mHeightCanMeasure = true; 6275 measuredHeight = contentHeight; 6276 if (heightMode == MeasureSpec.AT_MOST) { 6277 // If we are larger than the AT_MOST height, then our height can 6278 // no longer be measured and we should scroll internally. 6279 if (measuredHeight > heightSize) { 6280 measuredHeight = heightSize; 6281 mHeightCanMeasure = false; 6282 } 6283 } 6284 } else { 6285 mHeightCanMeasure = false; 6286 } 6287 if (mNativeClass != 0) { 6288 nativeSetHeightCanMeasure(mHeightCanMeasure); 6289 } 6290 // For the width, always use the given size unless unspecified. 6291 if (widthMode == MeasureSpec.UNSPECIFIED) { 6292 mWidthCanMeasure = true; 6293 measuredWidth = contentWidth; 6294 } else { 6295 mWidthCanMeasure = false; 6296 } 6297 6298 synchronized (this) { 6299 setMeasuredDimension(measuredWidth, measuredHeight); 6300 } 6301 } 6302 6303 @Override 6304 public boolean requestChildRectangleOnScreen(View child, 6305 Rect rect, 6306 boolean immediate) { 6307 // don't scroll while in zoom animation. When it is done, we will adjust 6308 // the necessary components (e.g., WebTextView if it is in editing mode) 6309 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6310 return false; 6311 } 6312 6313 rect.offset(child.getLeft() - child.getScrollX(), 6314 child.getTop() - child.getScrollY()); 6315 6316 Rect content = new Rect(viewToContentX(mScrollX), 6317 viewToContentY(mScrollY), 6318 viewToContentX(mScrollX + getWidth() 6319 - getVerticalScrollbarWidth()), 6320 viewToContentY(mScrollY + getViewHeightWithTitle())); 6321 content = nativeSubtractLayers(content); 6322 int screenTop = contentToViewY(content.top); 6323 int screenBottom = contentToViewY(content.bottom); 6324 int height = screenBottom - screenTop; 6325 int scrollYDelta = 0; 6326 6327 if (rect.bottom > screenBottom) { 6328 int oneThirdOfScreenHeight = height / 3; 6329 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6330 // If the rectangle is too tall to fit in the bottom two thirds 6331 // of the screen, place it at the top. 6332 scrollYDelta = rect.top - screenTop; 6333 } else { 6334 // If the rectangle will still fit on screen, we want its 6335 // top to be in the top third of the screen. 6336 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6337 } 6338 } else if (rect.top < screenTop) { 6339 scrollYDelta = rect.top - screenTop; 6340 } 6341 6342 int screenLeft = contentToViewX(content.left); 6343 int screenRight = contentToViewX(content.right); 6344 int width = screenRight - screenLeft; 6345 int scrollXDelta = 0; 6346 6347 if (rect.right > screenRight && rect.left > screenLeft) { 6348 if (rect.width() > width) { 6349 scrollXDelta += (rect.left - screenLeft); 6350 } else { 6351 scrollXDelta += (rect.right - screenRight); 6352 } 6353 } else if (rect.left < screenLeft) { 6354 scrollXDelta -= (screenLeft - rect.left); 6355 } 6356 6357 if ((scrollYDelta | scrollXDelta) != 0) { 6358 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6359 } 6360 6361 return false; 6362 } 6363 6364 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6365 String replace, int newStart, int newEnd) { 6366 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6367 arg.mReplace = replace; 6368 arg.mNewStart = newStart; 6369 arg.mNewEnd = newEnd; 6370 mTextGeneration++; 6371 arg.mTextGeneration = mTextGeneration; 6372 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6373 } 6374 6375 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6376 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6377 arg.mEvent = event; 6378 arg.mCurrentText = currentText; 6379 // Increase our text generation number, and pass it to webcore thread 6380 mTextGeneration++; 6381 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6382 // WebKit's document state is not saved until about to leave the page. 6383 // To make sure the host application, like Browser, has the up to date 6384 // document state when it goes to background, we force to save the 6385 // document state. 6386 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6387 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6388 cursorData(), 1000); 6389 } 6390 6391 /* package */ synchronized WebViewCore getWebViewCore() { 6392 return mWebViewCore; 6393 } 6394 6395 //------------------------------------------------------------------------- 6396 // Methods can be called from a separate thread, like WebViewCore 6397 // If it needs to call the View system, it has to send message. 6398 //------------------------------------------------------------------------- 6399 6400 /** 6401 * General handler to receive message coming from webkit thread 6402 */ 6403 class PrivateHandler extends Handler { 6404 @Override 6405 public void handleMessage(Message msg) { 6406 // exclude INVAL_RECT_MSG_ID since it is frequently output 6407 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6408 if (msg.what >= FIRST_PRIVATE_MSG_ID 6409 && msg.what <= LAST_PRIVATE_MSG_ID) { 6410 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6411 - FIRST_PRIVATE_MSG_ID]); 6412 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6413 && msg.what <= LAST_PACKAGE_MSG_ID) { 6414 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6415 - FIRST_PACKAGE_MSG_ID]); 6416 } else { 6417 Log.v(LOGTAG, Integer.toString(msg.what)); 6418 } 6419 } 6420 if (mWebViewCore == null) { 6421 // after WebView's destroy() is called, skip handling messages. 6422 return; 6423 } 6424 switch (msg.what) { 6425 case REMEMBER_PASSWORD: { 6426 mDatabase.setUsernamePassword( 6427 msg.getData().getString("host"), 6428 msg.getData().getString("username"), 6429 msg.getData().getString("password")); 6430 ((Message) msg.obj).sendToTarget(); 6431 break; 6432 } 6433 case NEVER_REMEMBER_PASSWORD: { 6434 mDatabase.setUsernamePassword( 6435 msg.getData().getString("host"), null, null); 6436 ((Message) msg.obj).sendToTarget(); 6437 break; 6438 } 6439 case PREVENT_DEFAULT_TIMEOUT: { 6440 // if timeout happens, cancel it so that it won't block UI 6441 // to continue handling touch events 6442 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6443 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6444 || (msg.arg1 == MotionEvent.ACTION_MOVE 6445 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6446 cancelWebCoreTouchEvent( 6447 viewToContentX((int) mLastTouchX + mScrollX), 6448 viewToContentY((int) mLastTouchY + mScrollY), 6449 true); 6450 } 6451 break; 6452 } 6453 case SWITCH_TO_SHORTPRESS: { 6454 if (mTouchMode == TOUCH_INIT_MODE) { 6455 if (!getSettings().supportTouchOnly() 6456 && mPreventDefault != PREVENT_DEFAULT_YES) { 6457 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6458 updateSelection(); 6459 } else { 6460 // set to TOUCH_SHORTPRESS_MODE so that it won't 6461 // trigger double tap any more 6462 mTouchMode = TOUCH_SHORTPRESS_MODE; 6463 } 6464 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6465 mTouchMode = TOUCH_DONE_MODE; 6466 } 6467 break; 6468 } 6469 case SWITCH_TO_LONGPRESS: { 6470 if (getSettings().supportTouchOnly()) { 6471 removeTouchHighlight(false); 6472 } 6473 if (inFullScreenMode() || mDeferTouchProcess) { 6474 TouchEventData ted = new TouchEventData(); 6475 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6476 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6477 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6478 // metaState for long press is tricky. Should it be the 6479 // state when the press started or when the press was 6480 // released? Or some intermediary key state? For 6481 // simplicity for now, we don't set it. 6482 ted.mMetaState = 0; 6483 ted.mReprocess = mDeferTouchProcess; 6484 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6485 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6486 mTouchMode = TOUCH_DONE_MODE; 6487 performLongClick(); 6488 } 6489 break; 6490 } 6491 case RELEASE_SINGLE_TAP: { 6492 doShortPress(); 6493 break; 6494 } 6495 case SCROLL_BY_MSG_ID: 6496 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6497 break; 6498 case SYNC_SCROLL_TO_MSG_ID: 6499 if (mUserScroll) { 6500 // if user has scrolled explicitly, don't sync the 6501 // scroll position any more 6502 mUserScroll = false; 6503 break; 6504 } 6505 // fall through 6506 case SCROLL_TO_MSG_ID: 6507 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6508 // if we can't scroll to the exact position due to pin, 6509 // send a message to WebCore to re-scroll when we get a 6510 // new picture 6511 mUserScroll = false; 6512 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6513 msg.arg1, msg.arg2); 6514 } 6515 break; 6516 case SPAWN_SCROLL_TO_MSG_ID: 6517 spawnContentScrollTo(msg.arg1, msg.arg2); 6518 break; 6519 case UPDATE_ZOOM_RANGE: { 6520 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 6521 // mScrollX contains the new minPrefWidth 6522 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 6523 break; 6524 } 6525 case REPLACE_BASE_CONTENT: { 6526 nativeReplaceBaseContent(msg.arg1); 6527 break; 6528 } 6529 case NEW_PICTURE_MSG_ID: { 6530 // called for new content 6531 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 6532 nativeSetBaseLayer(draw.mBaseLayer); 6533 final Point viewSize = draw.mViewPoint; 6534 WebViewCore.ViewState viewState = draw.mViewState; 6535 boolean isPictureAfterFirstLayout = viewState != null; 6536 if (isPictureAfterFirstLayout) { 6537 // Reset the last sent data here since dealing with new page. 6538 mLastWidthSent = 0; 6539 mZoomManager.onFirstLayout(draw); 6540 if (!mDrawHistory) { 6541 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 6542 // As we are on a new page, remove the WebTextView. This 6543 // is necessary for page loads driven by webkit, and in 6544 // particular when the user was on a password field, so 6545 // the WebTextView was visible. 6546 clearTextEntry(); 6547 } 6548 } 6549 6550 // We update the layout (i.e. request a layout from the 6551 // view system) if the last view size that we sent to 6552 // WebCore matches the view size of the picture we just 6553 // received in the fixed dimension. 6554 final boolean updateLayout = viewSize.x == mLastWidthSent 6555 && viewSize.y == mLastHeightSent; 6556 recordNewContentSize(draw.mWidthHeight.x, 6557 draw.mWidthHeight.y, updateLayout); 6558 if (DebugFlags.WEB_VIEW) { 6559 Rect b = draw.mInvalRegion.getBounds(); 6560 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6561 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6562 } 6563 invalidateContentRect(draw.mInvalRegion.getBounds()); 6564 6565 if (mPictureListener != null) { 6566 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6567 } 6568 6569 // update the zoom information based on the new picture 6570 mZoomManager.onNewPicture(draw); 6571 6572 if (draw.mFocusSizeChanged && inEditingMode()) { 6573 mFocusSizeChanged = true; 6574 } 6575 if (isPictureAfterFirstLayout) { 6576 mViewManager.postReadyToDrawAll(); 6577 } 6578 break; 6579 } 6580 case WEBCORE_INITIALIZED_MSG_ID: 6581 // nativeCreate sets mNativeClass to a non-zero value 6582 nativeCreate(msg.arg1); 6583 break; 6584 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6585 // Make sure that the textfield is currently focused 6586 // and representing the same node as the pointer. 6587 if (inEditingMode() && 6588 mWebTextView.isSameTextField(msg.arg1)) { 6589 if (msg.getData().getBoolean("password")) { 6590 Spannable text = (Spannable) mWebTextView.getText(); 6591 int start = Selection.getSelectionStart(text); 6592 int end = Selection.getSelectionEnd(text); 6593 mWebTextView.setInPassword(true); 6594 // Restore the selection, which may have been 6595 // ruined by setInPassword. 6596 Spannable pword = 6597 (Spannable) mWebTextView.getText(); 6598 Selection.setSelection(pword, start, end); 6599 // If the text entry has created more events, ignore 6600 // this one. 6601 } else if (msg.arg2 == mTextGeneration) { 6602 mWebTextView.setTextAndKeepSelection( 6603 (String) msg.obj); 6604 } 6605 } 6606 break; 6607 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6608 displaySoftKeyboard(true); 6609 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 6610 case UPDATE_TEXT_SELECTION_MSG_ID: 6611 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6612 (WebViewCore.TextSelectionData) msg.obj); 6613 break; 6614 case RETURN_LABEL: 6615 if (inEditingMode() 6616 && mWebTextView.isSameTextField(msg.arg1)) { 6617 mWebTextView.setHint((String) msg.obj); 6618 InputMethodManager imm 6619 = InputMethodManager.peekInstance(); 6620 // The hint is propagated to the IME in 6621 // onCreateInputConnection. If the IME is already 6622 // active, restart it so that its hint text is updated. 6623 if (imm != null && imm.isActive(mWebTextView)) { 6624 imm.restartInput(mWebTextView); 6625 } 6626 } 6627 break; 6628 case UNHANDLED_NAV_KEY: 6629 navHandledKey(msg.arg1, 1, false, 0); 6630 break; 6631 case UPDATE_TEXT_ENTRY_MSG_ID: 6632 // this is sent after finishing resize in WebViewCore. Make 6633 // sure the text edit box is still on the screen. 6634 if (inEditingMode() && nativeCursorIsTextInput()) { 6635 mWebTextView.bringIntoView(); 6636 rebuildWebTextView(); 6637 } 6638 break; 6639 case CLEAR_TEXT_ENTRY: 6640 clearTextEntry(); 6641 break; 6642 case INVAL_RECT_MSG_ID: { 6643 Rect r = (Rect)msg.obj; 6644 if (r == null) { 6645 invalidate(); 6646 } else { 6647 // we need to scale r from content into view coords, 6648 // which viewInvalidate() does for us 6649 viewInvalidate(r.left, r.top, r.right, r.bottom); 6650 } 6651 break; 6652 } 6653 case REQUEST_FORM_DATA: 6654 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6655 if (mWebTextView.isSameTextField(msg.arg1)) { 6656 mWebTextView.setAdapterCustom(adapter); 6657 } 6658 break; 6659 case RESUME_WEBCORE_PRIORITY: 6660 WebViewCore.resumePriority(); 6661 WebViewCore.resumeUpdatePicture(mWebViewCore); 6662 break; 6663 6664 case LONG_PRESS_CENTER: 6665 // as this is shared by keydown and trackballdown, reset all 6666 // the states 6667 mGotCenterDown = false; 6668 mTrackballDown = false; 6669 performLongClick(); 6670 break; 6671 6672 case WEBCORE_NEED_TOUCH_EVENTS: 6673 mForwardTouchEvents = (msg.arg1 != 0); 6674 break; 6675 6676 case PREVENT_TOUCH_ID: 6677 if (inFullScreenMode()) { 6678 break; 6679 } 6680 if (msg.obj == null) { 6681 if (msg.arg1 == MotionEvent.ACTION_DOWN 6682 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6683 // if prevent default is called from WebCore, UI 6684 // will not handle the rest of the touch events any 6685 // more. 6686 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6687 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6688 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6689 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6690 // the return for the first ACTION_MOVE will decide 6691 // whether UI will handle touch or not. Currently no 6692 // support for alternating prevent default 6693 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6694 : PREVENT_DEFAULT_NO; 6695 } 6696 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6697 mTouchHighlightRegion.setEmpty(); 6698 } 6699 } else if (msg.arg2 == 0) { 6700 // prevent default is not called in WebCore, so the 6701 // message needs to be reprocessed in UI 6702 TouchEventData ted = (TouchEventData) msg.obj; 6703 switch (ted.mAction) { 6704 case MotionEvent.ACTION_DOWN: 6705 mLastDeferTouchX = contentToViewX(ted.mX) 6706 - mScrollX; 6707 mLastDeferTouchY = contentToViewY(ted.mY) 6708 - mScrollY; 6709 mDeferTouchMode = TOUCH_INIT_MODE; 6710 break; 6711 case MotionEvent.ACTION_MOVE: { 6712 // no snapping in defer process 6713 int x = contentToViewX(ted.mX) - mScrollX; 6714 int y = contentToViewY(ted.mY) - mScrollY; 6715 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6716 mDeferTouchMode = TOUCH_DRAG_MODE; 6717 mLastDeferTouchX = x; 6718 mLastDeferTouchY = y; 6719 startDrag(); 6720 } 6721 int deltaX = pinLocX((int) (mScrollX 6722 + mLastDeferTouchX - x)) 6723 - mScrollX; 6724 int deltaY = pinLocY((int) (mScrollY 6725 + mLastDeferTouchY - y)) 6726 - mScrollY; 6727 doDrag(deltaX, deltaY); 6728 if (deltaX != 0) mLastDeferTouchX = x; 6729 if (deltaY != 0) mLastDeferTouchY = y; 6730 break; 6731 } 6732 case MotionEvent.ACTION_UP: 6733 case MotionEvent.ACTION_CANCEL: 6734 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6735 // no fling in defer process 6736 WebViewCore.resumePriority(); 6737 WebViewCore.resumeUpdatePicture(mWebViewCore); 6738 } 6739 mDeferTouchMode = TOUCH_DONE_MODE; 6740 break; 6741 case WebViewCore.ACTION_DOUBLETAP: 6742 // doDoubleTap() needs mLastTouchX/Y as anchor 6743 mLastTouchX = contentToViewX(ted.mX) - mScrollX; 6744 mLastTouchY = contentToViewY(ted.mY) - mScrollY; 6745 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6746 mDeferTouchMode = TOUCH_DONE_MODE; 6747 break; 6748 case WebViewCore.ACTION_LONGPRESS: 6749 HitTestResult hitTest = getHitTestResult(); 6750 if (hitTest != null && hitTest.mType 6751 != HitTestResult.UNKNOWN_TYPE) { 6752 performLongClick(); 6753 } 6754 mDeferTouchMode = TOUCH_DONE_MODE; 6755 break; 6756 } 6757 } 6758 break; 6759 6760 case REQUEST_KEYBOARD: 6761 if (msg.arg1 == 0) { 6762 hideSoftKeyboard(); 6763 } else { 6764 displaySoftKeyboard(false); 6765 } 6766 break; 6767 6768 case FIND_AGAIN: 6769 // Ignore if find has been dismissed. 6770 if (mFindIsUp && mFindCallback != null) { 6771 mFindCallback.findAll(); 6772 } 6773 break; 6774 6775 case DRAG_HELD_MOTIONLESS: 6776 mHeldMotionless = MOTIONLESS_TRUE; 6777 invalidate(); 6778 // fall through to keep scrollbars awake 6779 6780 case AWAKEN_SCROLL_BARS: 6781 if (mTouchMode == TOUCH_DRAG_MODE 6782 && mHeldMotionless == MOTIONLESS_TRUE) { 6783 awakenScrollBars(ViewConfiguration 6784 .getScrollDefaultDelay(), false); 6785 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6786 .obtainMessage(AWAKEN_SCROLL_BARS), 6787 ViewConfiguration.getScrollDefaultDelay()); 6788 } 6789 break; 6790 6791 case DO_MOTION_UP: 6792 doMotionUp(msg.arg1, msg.arg2); 6793 break; 6794 6795 case SHOW_FULLSCREEN: { 6796 View view = (View) msg.obj; 6797 int npp = msg.arg1; 6798 6799 if (mFullScreenHolder != null) { 6800 Log.w(LOGTAG, "Should not have another full screen."); 6801 mFullScreenHolder.dismiss(); 6802 } 6803 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 6804 mFullScreenHolder.setContentView(view); 6805 mFullScreenHolder.setCancelable(false); 6806 mFullScreenHolder.setCanceledOnTouchOutside(false); 6807 mFullScreenHolder.show(); 6808 6809 break; 6810 } 6811 case HIDE_FULLSCREEN: 6812 if (inFullScreenMode()) { 6813 mFullScreenHolder.dismiss(); 6814 mFullScreenHolder = null; 6815 } 6816 break; 6817 6818 case DOM_FOCUS_CHANGED: 6819 if (inEditingMode()) { 6820 nativeClearCursor(); 6821 rebuildWebTextView(); 6822 } 6823 break; 6824 6825 case SHOW_RECT_MSG_ID: { 6826 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6827 int x = mScrollX; 6828 int left = contentToViewX(data.mLeft); 6829 int width = contentToViewDimension(data.mWidth); 6830 int maxWidth = contentToViewDimension(data.mContentWidth); 6831 int viewWidth = getViewWidth(); 6832 if (width < viewWidth) { 6833 // center align 6834 x += left + width / 2 - mScrollX - viewWidth / 2; 6835 } else { 6836 x += (int) (left + data.mXPercentInDoc * width 6837 - mScrollX - data.mXPercentInView * viewWidth); 6838 } 6839 if (DebugFlags.WEB_VIEW) { 6840 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6841 width + ",maxWidth=" + maxWidth + 6842 ",viewWidth=" + viewWidth + ",x=" 6843 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6844 ",xPercentInView=" + data.mXPercentInView+ ")"); 6845 } 6846 // use the passing content width to cap x as the current 6847 // mContentWidth may not be updated yet 6848 x = Math.max(0, 6849 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6850 int top = contentToViewY(data.mTop); 6851 int height = contentToViewDimension(data.mHeight); 6852 int maxHeight = contentToViewDimension(data.mContentHeight); 6853 int viewHeight = getViewHeight(); 6854 int y = (int) (top + data.mYPercentInDoc * height - 6855 data.mYPercentInView * viewHeight); 6856 if (DebugFlags.WEB_VIEW) { 6857 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6858 height + ",maxHeight=" + maxHeight + 6859 ",viewHeight=" + viewHeight + ",y=" 6860 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6861 ",yPercentInView=" + data.mYPercentInView+ ")"); 6862 } 6863 // use the passing content height to cap y as the current 6864 // mContentHeight may not be updated yet 6865 y = Math.max(0, 6866 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6867 // We need to take into account the visible title height 6868 // when scrolling since y is an absolute view position. 6869 y = Math.max(0, y - getVisibleTitleHeight()); 6870 scrollTo(x, y); 6871 } 6872 break; 6873 6874 case CENTER_FIT_RECT: 6875 Rect r = (Rect)msg.obj; 6876 centerFitRect(r.left, r.top, r.width(), r.height()); 6877 break; 6878 6879 case SET_SCROLLBAR_MODES: 6880 mHorizontalScrollBarMode = msg.arg1; 6881 mVerticalScrollBarMode = msg.arg2; 6882 break; 6883 6884 case SELECTION_STRING_CHANGED: 6885 if (mAccessibilityInjector != null) { 6886 String selectionString = (String) msg.obj; 6887 mAccessibilityInjector.onSelectionStringChange(selectionString); 6888 } 6889 break; 6890 6891 case SET_TOUCH_HIGHLIGHT_RECTS: 6892 invalidate(mTouchHighlightRegion.getBounds()); 6893 mTouchHighlightRegion.setEmpty(); 6894 if (msg.obj != null) { 6895 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 6896 for (Rect rect : rects) { 6897 Rect viewRect = contentToViewRect(rect); 6898 // some sites, like stories in nytimes.com, set 6899 // mouse event handler in the top div. It is not 6900 // user friendly to highlight the div if it covers 6901 // more than half of the screen. 6902 if (viewRect.width() < getWidth() >> 1 6903 || viewRect.height() < getHeight() >> 1) { 6904 mTouchHighlightRegion.union(viewRect); 6905 invalidate(viewRect); 6906 } else { 6907 Log.w(LOGTAG, "Skip the huge selection rect:" 6908 + viewRect); 6909 } 6910 } 6911 } 6912 break; 6913 6914 case SAVE_WEBARCHIVE_FINISHED: 6915 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 6916 if (saveMessage.mCallback != null) { 6917 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 6918 } 6919 break; 6920 6921 default: 6922 super.handleMessage(msg); 6923 break; 6924 } 6925 } 6926 } 6927 6928 /** 6929 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 6930 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 6931 */ 6932 private void updateTextSelectionFromMessage(int nodePointer, 6933 int textGeneration, WebViewCore.TextSelectionData data) { 6934 if (inEditingMode() 6935 && mWebTextView.isSameTextField(nodePointer) 6936 && textGeneration == mTextGeneration) { 6937 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 6938 } 6939 } 6940 6941 // Class used to use a dropdown for a <select> element 6942 private class InvokeListBox implements Runnable { 6943 // Whether the listbox allows multiple selection. 6944 private boolean mMultiple; 6945 // Passed in to a list with multiple selection to tell 6946 // which items are selected. 6947 private int[] mSelectedArray; 6948 // Passed in to a list with single selection to tell 6949 // where the initial selection is. 6950 private int mSelection; 6951 6952 private Container[] mContainers; 6953 6954 // Need these to provide stable ids to my ArrayAdapter, 6955 // which normally does not have stable ids. (Bug 1250098) 6956 private class Container extends Object { 6957 /** 6958 * Possible values for mEnabled. Keep in sync with OptionStatus in 6959 * WebViewCore.cpp 6960 */ 6961 final static int OPTGROUP = -1; 6962 final static int OPTION_DISABLED = 0; 6963 final static int OPTION_ENABLED = 1; 6964 6965 String mString; 6966 int mEnabled; 6967 int mId; 6968 6969 public String toString() { 6970 return mString; 6971 } 6972 } 6973 6974 /** 6975 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6976 * and allow filtering. 6977 */ 6978 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6979 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6980 super(context, 6981 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6982 com.android.internal.R.layout.select_dialog_singlechoice, 6983 objects); 6984 } 6985 6986 @Override 6987 public View getView(int position, View convertView, 6988 ViewGroup parent) { 6989 // Always pass in null so that we will get a new CheckedTextView 6990 // Otherwise, an item which was previously used as an <optgroup> 6991 // element (i.e. has no check), could get used as an <option> 6992 // element, which needs a checkbox/radio, but it would not have 6993 // one. 6994 convertView = super.getView(position, null, parent); 6995 Container c = item(position); 6996 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6997 // ListView does not draw dividers between disabled and 6998 // enabled elements. Use a LinearLayout to provide dividers 6999 LinearLayout layout = new LinearLayout(mContext); 7000 layout.setOrientation(LinearLayout.VERTICAL); 7001 if (position > 0) { 7002 View dividerTop = new View(mContext); 7003 dividerTop.setBackgroundResource( 7004 android.R.drawable.divider_horizontal_bright); 7005 layout.addView(dividerTop); 7006 } 7007 7008 if (Container.OPTGROUP == c.mEnabled) { 7009 // Currently select_dialog_multichoice and 7010 // select_dialog_singlechoice are CheckedTextViews. If 7011 // that changes, the class cast will no longer be valid. 7012 Assert.assertTrue( 7013 convertView instanceof CheckedTextView); 7014 ((CheckedTextView) convertView).setCheckMarkDrawable( 7015 null); 7016 } else { 7017 // c.mEnabled == Container.OPTION_DISABLED 7018 // Draw the disabled element in a disabled state. 7019 convertView.setEnabled(false); 7020 } 7021 7022 layout.addView(convertView); 7023 if (position < getCount() - 1) { 7024 View dividerBottom = new View(mContext); 7025 dividerBottom.setBackgroundResource( 7026 android.R.drawable.divider_horizontal_bright); 7027 layout.addView(dividerBottom); 7028 } 7029 return layout; 7030 } 7031 return convertView; 7032 } 7033 7034 @Override 7035 public boolean hasStableIds() { 7036 // AdapterView's onChanged method uses this to determine whether 7037 // to restore the old state. Return false so that the old (out 7038 // of date) state does not replace the new, valid state. 7039 return false; 7040 } 7041 7042 private Container item(int position) { 7043 if (position < 0 || position >= getCount()) { 7044 return null; 7045 } 7046 return (Container) getItem(position); 7047 } 7048 7049 @Override 7050 public long getItemId(int position) { 7051 Container item = item(position); 7052 if (item == null) { 7053 return -1; 7054 } 7055 return item.mId; 7056 } 7057 7058 @Override 7059 public boolean areAllItemsEnabled() { 7060 return false; 7061 } 7062 7063 @Override 7064 public boolean isEnabled(int position) { 7065 Container item = item(position); 7066 if (item == null) { 7067 return false; 7068 } 7069 return Container.OPTION_ENABLED == item.mEnabled; 7070 } 7071 } 7072 7073 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7074 mMultiple = true; 7075 mSelectedArray = selected; 7076 7077 int length = array.length; 7078 mContainers = new Container[length]; 7079 for (int i = 0; i < length; i++) { 7080 mContainers[i] = new Container(); 7081 mContainers[i].mString = array[i]; 7082 mContainers[i].mEnabled = enabled[i]; 7083 mContainers[i].mId = i; 7084 } 7085 } 7086 7087 private InvokeListBox(String[] array, int[] enabled, int selection) { 7088 mSelection = selection; 7089 mMultiple = false; 7090 7091 int length = array.length; 7092 mContainers = new Container[length]; 7093 for (int i = 0; i < length; i++) { 7094 mContainers[i] = new Container(); 7095 mContainers[i].mString = array[i]; 7096 mContainers[i].mEnabled = enabled[i]; 7097 mContainers[i].mId = i; 7098 } 7099 } 7100 7101 /* 7102 * Whenever the data set changes due to filtering, this class ensures 7103 * that the checked item remains checked. 7104 */ 7105 private class SingleDataSetObserver extends DataSetObserver { 7106 private long mCheckedId; 7107 private ListView mListView; 7108 private Adapter mAdapter; 7109 7110 /* 7111 * Create a new observer. 7112 * @param id The ID of the item to keep checked. 7113 * @param l ListView for getting and clearing the checked states 7114 * @param a Adapter for getting the IDs 7115 */ 7116 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7117 mCheckedId = id; 7118 mListView = l; 7119 mAdapter = a; 7120 } 7121 7122 public void onChanged() { 7123 // The filter may have changed which item is checked. Find the 7124 // item that the ListView thinks is checked. 7125 int position = mListView.getCheckedItemPosition(); 7126 long id = mAdapter.getItemId(position); 7127 if (mCheckedId != id) { 7128 // Clear the ListView's idea of the checked item, since 7129 // it is incorrect 7130 mListView.clearChoices(); 7131 // Search for mCheckedId. If it is in the filtered list, 7132 // mark it as checked 7133 int count = mAdapter.getCount(); 7134 for (int i = 0; i < count; i++) { 7135 if (mAdapter.getItemId(i) == mCheckedId) { 7136 mListView.setItemChecked(i, true); 7137 break; 7138 } 7139 } 7140 } 7141 } 7142 7143 public void onInvalidate() {} 7144 } 7145 7146 public void run() { 7147 final ListView listView = (ListView) LayoutInflater.from(mContext) 7148 .inflate(com.android.internal.R.layout.select_dialog, null); 7149 final MyArrayListAdapter adapter = new 7150 MyArrayListAdapter(mContext, mContainers, mMultiple); 7151 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7152 .setView(listView).setCancelable(true) 7153 .setInverseBackgroundForced(true); 7154 7155 if (mMultiple) { 7156 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7157 public void onClick(DialogInterface dialog, int which) { 7158 mWebViewCore.sendMessage( 7159 EventHub.LISTBOX_CHOICES, 7160 adapter.getCount(), 0, 7161 listView.getCheckedItemPositions()); 7162 }}); 7163 b.setNegativeButton(android.R.string.cancel, 7164 new DialogInterface.OnClickListener() { 7165 public void onClick(DialogInterface dialog, int which) { 7166 mWebViewCore.sendMessage( 7167 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7168 }}); 7169 } 7170 final AlertDialog dialog = b.create(); 7171 listView.setAdapter(adapter); 7172 listView.setFocusableInTouchMode(true); 7173 // There is a bug (1250103) where the checks in a ListView with 7174 // multiple items selected are associated with the positions, not 7175 // the ids, so the items do not properly retain their checks when 7176 // filtered. Do not allow filtering on multiple lists until 7177 // that bug is fixed. 7178 7179 listView.setTextFilterEnabled(!mMultiple); 7180 if (mMultiple) { 7181 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7182 int length = mSelectedArray.length; 7183 for (int i = 0; i < length; i++) { 7184 listView.setItemChecked(mSelectedArray[i], true); 7185 } 7186 } else { 7187 listView.setOnItemClickListener(new OnItemClickListener() { 7188 public void onItemClick(AdapterView parent, View v, 7189 int position, long id) { 7190 mWebViewCore.sendMessage( 7191 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 7192 dialog.dismiss(); 7193 } 7194 }); 7195 if (mSelection != -1) { 7196 listView.setSelection(mSelection); 7197 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7198 listView.setItemChecked(mSelection, true); 7199 DataSetObserver observer = new SingleDataSetObserver( 7200 adapter.getItemId(mSelection), listView, adapter); 7201 adapter.registerDataSetObserver(observer); 7202 } 7203 } 7204 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7205 public void onCancel(DialogInterface dialog) { 7206 mWebViewCore.sendMessage( 7207 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7208 } 7209 }); 7210 dialog.show(); 7211 } 7212 } 7213 7214 /* 7215 * Request a dropdown menu for a listbox with multiple selection. 7216 * 7217 * @param array Labels for the listbox. 7218 * @param enabledArray State for each element in the list. See static 7219 * integers in Container class. 7220 * @param selectedArray Which positions are initally selected. 7221 */ 7222 void requestListBox(String[] array, int[] enabledArray, int[] 7223 selectedArray) { 7224 mPrivateHandler.post( 7225 new InvokeListBox(array, enabledArray, selectedArray)); 7226 } 7227 7228 /* 7229 * Request a dropdown menu for a listbox with single selection or a single 7230 * <select> element. 7231 * 7232 * @param array Labels for the listbox. 7233 * @param enabledArray State for each element in the list. See static 7234 * integers in Container class. 7235 * @param selection Which position is initally selected. 7236 */ 7237 void requestListBox(String[] array, int[] enabledArray, int selection) { 7238 mPrivateHandler.post( 7239 new InvokeListBox(array, enabledArray, selection)); 7240 } 7241 7242 // called by JNI 7243 private void sendMoveFocus(int frame, int node) { 7244 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7245 new WebViewCore.CursorData(frame, node, 0, 0)); 7246 } 7247 7248 // called by JNI 7249 private void sendMoveMouse(int frame, int node, int x, int y) { 7250 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7251 new WebViewCore.CursorData(frame, node, x, y)); 7252 } 7253 7254 /* 7255 * Send a mouse move event to the webcore thread. 7256 * 7257 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7258 * which wants key events, but it is not the focus. This 7259 * will make the visual appear as though nothing is in 7260 * focus. Remove the WebTextView, if present, and stop 7261 * drawing the blinking caret. 7262 * called by JNI 7263 */ 7264 private void sendMoveMouseIfLatest(boolean removeFocus) { 7265 if (removeFocus) { 7266 clearTextEntry(); 7267 } 7268 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7269 cursorData()); 7270 } 7271 7272 // called by JNI 7273 private void sendMotionUp(int touchGeneration, 7274 int frame, int node, int x, int y) { 7275 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7276 touchUpData.mMoveGeneration = touchGeneration; 7277 touchUpData.mFrame = frame; 7278 touchUpData.mNode = node; 7279 touchUpData.mX = x; 7280 touchUpData.mY = y; 7281 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7282 } 7283 7284 7285 private int getScaledMaxXScroll() { 7286 int width; 7287 if (mHeightCanMeasure == false) { 7288 width = getViewWidth() / 4; 7289 } else { 7290 Rect visRect = new Rect(); 7291 calcOurVisibleRect(visRect); 7292 width = visRect.width() / 2; 7293 } 7294 // FIXME the divisor should be retrieved from somewhere 7295 return viewToContentX(width); 7296 } 7297 7298 private int getScaledMaxYScroll() { 7299 int height; 7300 if (mHeightCanMeasure == false) { 7301 height = getViewHeight() / 4; 7302 } else { 7303 Rect visRect = new Rect(); 7304 calcOurVisibleRect(visRect); 7305 height = visRect.height() / 2; 7306 } 7307 // FIXME the divisor should be retrieved from somewhere 7308 // the closest thing today is hard-coded into ScrollView.java 7309 // (from ScrollView.java, line 363) int maxJump = height/2; 7310 return Math.round(height * mZoomManager.getInvScale()); 7311 } 7312 7313 /** 7314 * Called by JNI to invalidate view 7315 */ 7316 private void viewInvalidate() { 7317 invalidate(); 7318 } 7319 7320 /** 7321 * Pass the key directly to the page. This assumes that 7322 * nativePageShouldHandleShiftAndArrows() returned true. 7323 */ 7324 private void letPageHandleNavKey(int keyCode, long time, boolean down) { 7325 int keyEventAction; 7326 int eventHubAction; 7327 if (down) { 7328 keyEventAction = KeyEvent.ACTION_DOWN; 7329 eventHubAction = EventHub.KEY_DOWN; 7330 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7331 } else { 7332 keyEventAction = KeyEvent.ACTION_UP; 7333 eventHubAction = EventHub.KEY_UP; 7334 } 7335 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7336 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7337 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7338 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7339 , 0, 0, 0); 7340 mWebViewCore.sendMessage(eventHubAction, event); 7341 } 7342 7343 // return true if the key was handled 7344 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7345 long time) { 7346 if (mNativeClass == 0) { 7347 return false; 7348 } 7349 mLastCursorTime = time; 7350 mLastCursorBounds = nativeGetCursorRingBounds(); 7351 boolean keyHandled 7352 = nativeMoveCursor(keyCode, count, noScroll) == false; 7353 if (DebugFlags.WEB_VIEW) { 7354 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7355 + " mLastCursorTime=" + mLastCursorTime 7356 + " handled=" + keyHandled); 7357 } 7358 if (keyHandled == false || mHeightCanMeasure == false) { 7359 return keyHandled; 7360 } 7361 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7362 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7363 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7364 Rect visRect = new Rect(); 7365 calcOurVisibleRect(visRect); 7366 Rect outset = new Rect(visRect); 7367 int maxXScroll = visRect.width() / 2; 7368 int maxYScroll = visRect.height() / 2; 7369 outset.inset(-maxXScroll, -maxYScroll); 7370 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7371 return keyHandled; 7372 } 7373 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7374 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7375 maxXScroll); 7376 if (maxH > 0) { 7377 pinScrollBy(maxH, 0, true, 0); 7378 } else { 7379 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7380 -maxXScroll); 7381 if (maxH < 0) { 7382 pinScrollBy(maxH, 0, true, 0); 7383 } 7384 } 7385 if (mLastCursorBounds.isEmpty()) return keyHandled; 7386 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7387 return keyHandled; 7388 } 7389 if (DebugFlags.WEB_VIEW) { 7390 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7391 + contentCursorRingBounds); 7392 } 7393 requestRectangleOnScreen(viewCursorRingBounds); 7394 mUserScroll = true; 7395 return keyHandled; 7396 } 7397 7398 /** 7399 * @return If the page should receive Shift and arrows. 7400 */ 7401 private boolean pageShouldHandleShiftAndArrows() { 7402 // TODO: Maybe the injected script should announce its presence in 7403 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 7404 // will check that as one of the conditions it looks for 7405 return (nativePageShouldHandleShiftAndArrows() || mAccessibilityScriptInjected); 7406 } 7407 7408 /** 7409 * Set the background color. It's white by default. Pass 7410 * zero to make the view transparent. 7411 * @param color the ARGB color described by Color.java 7412 */ 7413 public void setBackgroundColor(int color) { 7414 mBackgroundColor = color; 7415 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7416 } 7417 7418 public void debugDump() { 7419 nativeDebugDump(); 7420 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7421 } 7422 7423 /** 7424 * Draw the HTML page into the specified canvas. This call ignores any 7425 * view-specific zoom, scroll offset, or other changes. It does not draw 7426 * any view-specific chrome, such as progress or URL bars. 7427 * 7428 * @hide only needs to be accessible to Browser and testing 7429 */ 7430 public void drawPage(Canvas canvas) { 7431 nativeDraw(canvas, 0, 0, false); 7432 } 7433 7434 /** 7435 * Set the time to wait between passing touches to WebCore. See also the 7436 * TOUCH_SENT_INTERVAL member for further discussion. 7437 * 7438 * @hide This is only used by the DRT test application. 7439 */ 7440 public void setTouchInterval(int interval) { 7441 mCurrentTouchInterval = interval; 7442 } 7443 7444 /** 7445 * Update our cache with updatedText. 7446 * @param updatedText The new text to put in our cache. 7447 */ 7448 /* package */ void updateCachedTextfield(String updatedText) { 7449 // Also place our generation number so that when we look at the cache 7450 // we recognize that it is up to date. 7451 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7452 } 7453 7454 private native int nativeCacheHitFramePointer(); 7455 private native Rect nativeCacheHitNodeBounds(); 7456 private native int nativeCacheHitNodePointer(); 7457 /* package */ native void nativeClearCursor(); 7458 private native void nativeCreate(int ptr); 7459 private native int nativeCursorFramePointer(); 7460 private native Rect nativeCursorNodeBounds(); 7461 private native int nativeCursorNodePointer(); 7462 /* package */ native boolean nativeCursorMatchesFocus(); 7463 private native boolean nativeCursorIntersects(Rect visibleRect); 7464 private native boolean nativeCursorIsAnchor(); 7465 private native boolean nativeCursorIsTextInput(); 7466 private native Point nativeCursorPosition(); 7467 private native String nativeCursorText(); 7468 /** 7469 * Returns true if the native cursor node says it wants to handle key events 7470 * (ala plugins). This can only be called if mNativeClass is non-zero! 7471 */ 7472 private native boolean nativeCursorWantsKeyEvents(); 7473 private native void nativeDebugDump(); 7474 private native void nativeDestroy(); 7475 7476 /** 7477 * Draw the picture set with a background color and extra. If 7478 * "splitIfNeeded" is true and the return value is not 0, the return value 7479 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 7480 * native allocation can be freed. 7481 */ 7482 private native int nativeDraw(Canvas canvas, int color, int extra, 7483 boolean splitIfNeeded); 7484 private native void nativeDumpDisplayTree(String urlOrNull); 7485 private native boolean nativeEvaluateLayersAnimations(); 7486 private native void nativeExtendSelection(int x, int y); 7487 private native int nativeFindAll(String findLower, String findUpper); 7488 private native void nativeFindNext(boolean forward); 7489 /* package */ native int nativeFocusCandidateFramePointer(); 7490 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7491 /* package */ native boolean nativeFocusCandidateIsPassword(); 7492 private native boolean nativeFocusCandidateIsRtlText(); 7493 private native boolean nativeFocusCandidateIsTextInput(); 7494 /* package */ native int nativeFocusCandidateMaxLength(); 7495 /* package */ native String nativeFocusCandidateName(); 7496 private native Rect nativeFocusCandidateNodeBounds(); 7497 /* package */ native int nativeFocusCandidatePointer(); 7498 private native String nativeFocusCandidateText(); 7499 private native int nativeFocusCandidateTextSize(); 7500 /** 7501 * Returns an integer corresponding to WebView.cpp::type. 7502 * See WebTextView.setType() 7503 */ 7504 private native int nativeFocusCandidateType(); 7505 private native boolean nativeFocusIsPlugin(); 7506 private native Rect nativeFocusNodeBounds(); 7507 /* package */ native int nativeFocusNodePointer(); 7508 private native Rect nativeGetCursorRingBounds(); 7509 private native String nativeGetSelection(); 7510 private native boolean nativeHasCursorNode(); 7511 private native boolean nativeHasFocusNode(); 7512 private native void nativeHideCursor(); 7513 private native boolean nativeHitSelection(int x, int y); 7514 private native String nativeImageURI(int x, int y); 7515 private native void nativeInstrumentReport(); 7516 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7517 // return true if the page has been scrolled 7518 private native boolean nativeMotionUp(int x, int y, int slop); 7519 // returns false if it handled the key 7520 private native boolean nativeMoveCursor(int keyCode, int count, 7521 boolean noScroll); 7522 private native int nativeMoveGeneration(); 7523 private native void nativeMoveSelection(int x, int y); 7524 /** 7525 * @return true if the page should get the shift and arrow keys, rather 7526 * than select text/navigation. 7527 * 7528 * If the focus is a plugin, or if the focus and cursor match and are 7529 * a contentEditable element, then the page should handle these keys. 7530 */ 7531 private native boolean nativePageShouldHandleShiftAndArrows(); 7532 private native boolean nativePointInNavCache(int x, int y, int slop); 7533 // Like many other of our native methods, you must make sure that 7534 // mNativeClass is not null before calling this method. 7535 private native void nativeRecordButtons(boolean focused, 7536 boolean pressed, boolean invalidate); 7537 private native void nativeResetSelection(); 7538 private native void nativeSelectAll(); 7539 private native void nativeSelectBestAt(Rect rect); 7540 private native int nativeSelectionX(); 7541 private native int nativeSelectionY(); 7542 private native int nativeFindIndex(); 7543 private native void nativeSetExtendSelection(); 7544 private native void nativeSetFindIsEmpty(); 7545 private native void nativeSetFindIsUp(boolean isUp); 7546 private native void nativeSetHeightCanMeasure(boolean measure); 7547 private native void nativeSetBaseLayer(int layer); 7548 private native void nativeShowCursorTimed(); 7549 private native void nativeReplaceBaseContent(int content); 7550 private native void nativeCopyBaseContentToPicture(Picture pict); 7551 private native boolean nativeHasContent(); 7552 private native void nativeSetSelectionPointer(boolean set, 7553 float scale, int x, int y); 7554 private native boolean nativeStartSelection(int x, int y); 7555 private native Rect nativeSubtractLayers(Rect content); 7556 private native int nativeTextGeneration(); 7557 // Never call this version except by updateCachedTextfield(String) - 7558 // we always want to pass in our generation number. 7559 private native void nativeUpdateCachedTextfield(String updatedText, 7560 int generation); 7561 private native boolean nativeWordSelection(int x, int y); 7562 // return NO_LEFTEDGE means failure. 7563 static final int NO_LEFTEDGE = -1; 7564 native int nativeGetBlockLeftEdge(int x, int y, float scale); 7565 7566 // Returns a pointer to the scrollable LayerAndroid at the given point. 7567 private native int nativeScrollableLayer(int x, int y); 7568 private native boolean nativeScrollLayer(int layer, int dx, int dy); 7569} 7570