WebView.java revision a3bec150bf1203e9a7cd8a6573db79a75cd6855a
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 = 980; 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 * Remove Find or Select ActionModes, if active. 1268 */ 1269 private void clearActionModes() { 1270 if (mSelectCallback != null) { 1271 mSelectCallback.finish(); 1272 } 1273 if (mFindCallback != null) { 1274 mFindCallback.finish(); 1275 } 1276 } 1277 1278 /** 1279 * Called to clear state when moving from one page to another, or changing 1280 * in some other way that makes elements associated with the current page 1281 * (such as WebTextView or ActionModes) no longer relevant. 1282 */ 1283 private void clearHelpers() { 1284 clearTextEntry(); 1285 clearActionModes(); 1286 } 1287 1288 /** 1289 * Destroy the internal state of the WebView. This method should be called 1290 * after the WebView has been removed from the view system. No other 1291 * methods may be called on a WebView after destroy. 1292 */ 1293 public void destroy() { 1294 clearHelpers(); 1295 1296 if (mWebViewCore != null) { 1297 // Set the handlers to null before destroying WebViewCore so no 1298 // more messages will be posted. 1299 mCallbackProxy.setWebViewClient(null); 1300 mCallbackProxy.setWebChromeClient(null); 1301 // Tell WebViewCore to destroy itself 1302 synchronized (this) { 1303 WebViewCore webViewCore = mWebViewCore; 1304 mWebViewCore = null; // prevent using partial webViewCore 1305 webViewCore.destroy(); 1306 } 1307 // Remove any pending messages that might not be serviced yet. 1308 mPrivateHandler.removeCallbacksAndMessages(null); 1309 mCallbackProxy.removeCallbacksAndMessages(null); 1310 // Wake up the WebCore thread just in case it is waiting for a 1311 // javascript dialog. 1312 synchronized (mCallbackProxy) { 1313 mCallbackProxy.notify(); 1314 } 1315 } 1316 if (mNativeClass != 0) { 1317 nativeDestroy(); 1318 mNativeClass = 0; 1319 } 1320 } 1321 1322 /** 1323 * Enables platform notifications of data state and proxy changes. 1324 */ 1325 public static void enablePlatformNotifications() { 1326 Network.enablePlatformNotifications(); 1327 } 1328 1329 /** 1330 * If platform notifications are enabled, this should be called 1331 * from the Activity's onPause() or onStop(). 1332 */ 1333 public static void disablePlatformNotifications() { 1334 Network.disablePlatformNotifications(); 1335 } 1336 1337 /** 1338 * Sets JavaScript engine flags. 1339 * 1340 * @param flags JS engine flags in a String 1341 * 1342 * @hide pending API solidification 1343 */ 1344 public void setJsFlags(String flags) { 1345 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1346 } 1347 1348 /** 1349 * Inform WebView of the network state. This is used to set 1350 * the javascript property window.navigator.isOnline and 1351 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1352 * @param networkUp boolean indicating if network is available 1353 */ 1354 public void setNetworkAvailable(boolean networkUp) { 1355 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1356 networkUp ? 1 : 0, 0); 1357 } 1358 1359 /** 1360 * Inform WebView about the current network type. 1361 * {@hide} 1362 */ 1363 public void setNetworkType(String type, String subtype) { 1364 Map<String, String> map = new HashMap<String, String>(); 1365 map.put("type", type); 1366 map.put("subtype", subtype); 1367 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1368 } 1369 /** 1370 * Save the state of this WebView used in 1371 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1372 * method no longer stores the display data for this WebView. The previous 1373 * behavior could potentially leak files if {@link #restoreState} was never 1374 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1375 * and restoring the display data. 1376 * @param outState The Bundle to store the WebView state. 1377 * @return The same copy of the back/forward list used to save the state. If 1378 * saveState fails, the returned list will be null. 1379 * @see #savePicture 1380 * @see #restorePicture 1381 */ 1382 public WebBackForwardList saveState(Bundle outState) { 1383 if (outState == null) { 1384 return null; 1385 } 1386 // We grab a copy of the back/forward list because a client of WebView 1387 // may have invalidated the history list by calling clearHistory. 1388 WebBackForwardList list = copyBackForwardList(); 1389 final int currentIndex = list.getCurrentIndex(); 1390 final int size = list.getSize(); 1391 // We should fail saving the state if the list is empty or the index is 1392 // not in a valid range. 1393 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1394 return null; 1395 } 1396 outState.putInt("index", currentIndex); 1397 // FIXME: This should just be a byte[][] instead of ArrayList but 1398 // Parcel.java does not have the code to handle multi-dimensional 1399 // arrays. 1400 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1401 for (int i = 0; i < size; i++) { 1402 WebHistoryItem item = list.getItemAtIndex(i); 1403 if (null == item) { 1404 // FIXME: this shouldn't happen 1405 // need to determine how item got set to null 1406 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1407 return null; 1408 } 1409 byte[] data = item.getFlattenedData(); 1410 if (data == null) { 1411 // It would be very odd to not have any data for a given history 1412 // item. And we will fail to rebuild the history list without 1413 // flattened data. 1414 return null; 1415 } 1416 history.add(data); 1417 } 1418 outState.putSerializable("history", history); 1419 if (mCertificate != null) { 1420 outState.putBundle("certificate", 1421 SslCertificate.saveState(mCertificate)); 1422 } 1423 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1424 mZoomManager.saveZoomState(outState); 1425 return list; 1426 } 1427 1428 /** 1429 * Save the current display data to the Bundle given. Used in conjunction 1430 * with {@link #saveState}. 1431 * @param b A Bundle to store the display data. 1432 * @param dest The file to store the serialized picture data. Will be 1433 * overwritten with this WebView's picture data. 1434 * @return True if the picture was successfully saved. 1435 */ 1436 public boolean savePicture(Bundle b, final File dest) { 1437 if (dest == null || b == null) { 1438 return false; 1439 } 1440 final Picture p = capturePicture(); 1441 // Use a temporary file while writing to ensure the destination file 1442 // contains valid data. 1443 final File temp = new File(dest.getPath() + ".writing"); 1444 new Thread(new Runnable() { 1445 public void run() { 1446 FileOutputStream out = null; 1447 try { 1448 out = new FileOutputStream(temp); 1449 p.writeToStream(out); 1450 // Writing the picture succeeded, rename the temporary file 1451 // to the destination. 1452 temp.renameTo(dest); 1453 } catch (Exception e) { 1454 // too late to do anything about it. 1455 } finally { 1456 if (out != null) { 1457 try { 1458 out.close(); 1459 } catch (Exception e) { 1460 // Can't do anything about that 1461 } 1462 } 1463 temp.delete(); 1464 } 1465 } 1466 }).start(); 1467 // now update the bundle 1468 b.putInt("scrollX", mScrollX); 1469 b.putInt("scrollY", mScrollY); 1470 mZoomManager.saveZoomState(b); 1471 return true; 1472 } 1473 1474 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1475 int sx = b.getInt("scrollX", 0); 1476 int sy = b.getInt("scrollY", 0); 1477 1478 mDrawHistory = true; 1479 mHistoryPicture = p; 1480 mScrollX = sx; 1481 mScrollY = sy; 1482 mZoomManager.restoreZoomState(b); 1483 final float scale = mZoomManager.getScale(); 1484 mHistoryWidth = Math.round(p.getWidth() * scale); 1485 mHistoryHeight = Math.round(p.getHeight() * scale); 1486 1487 invalidate(); 1488 } 1489 1490 /** 1491 * Restore the display data that was save in {@link #savePicture}. Used in 1492 * conjunction with {@link #restoreState}. 1493 * @param b A Bundle containing the saved display data. 1494 * @param src The file where the picture data was stored. 1495 * @return True if the picture was successfully restored. 1496 */ 1497 public boolean restorePicture(Bundle b, File src) { 1498 if (src == null || b == null) { 1499 return false; 1500 } 1501 if (!src.exists()) { 1502 return false; 1503 } 1504 try { 1505 final FileInputStream in = new FileInputStream(src); 1506 final Bundle copy = new Bundle(b); 1507 new Thread(new Runnable() { 1508 public void run() { 1509 try { 1510 final Picture p = Picture.createFromStream(in); 1511 if (p != null) { 1512 // Post a runnable on the main thread to update the 1513 // history picture fields. 1514 mPrivateHandler.post(new Runnable() { 1515 public void run() { 1516 restoreHistoryPictureFields(p, copy); 1517 } 1518 }); 1519 } 1520 } finally { 1521 try { 1522 in.close(); 1523 } catch (Exception e) { 1524 // Nothing we can do now. 1525 } 1526 } 1527 } 1528 }).start(); 1529 } catch (FileNotFoundException e){ 1530 e.printStackTrace(); 1531 } 1532 return true; 1533 } 1534 1535 /** 1536 * Restore the state of this WebView from the given map used in 1537 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1538 * be called to restore the state of the WebView before using the object. If 1539 * it is called after the WebView has had a chance to build state (load 1540 * pages, create a back/forward list, etc.) there may be undesirable 1541 * side-effects. Please note that this method no longer restores the 1542 * display data for this WebView. See {@link #savePicture} and {@link 1543 * #restorePicture} for saving and restoring the display data. 1544 * @param inState The incoming Bundle of state. 1545 * @return The restored back/forward list or null if restoreState failed. 1546 * @see #savePicture 1547 * @see #restorePicture 1548 */ 1549 public WebBackForwardList restoreState(Bundle inState) { 1550 WebBackForwardList returnList = null; 1551 if (inState == null) { 1552 return returnList; 1553 } 1554 if (inState.containsKey("index") && inState.containsKey("history")) { 1555 mCertificate = SslCertificate.restoreState( 1556 inState.getBundle("certificate")); 1557 1558 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1559 final int index = inState.getInt("index"); 1560 // We can't use a clone of the list because we need to modify the 1561 // shared copy, so synchronize instead to prevent concurrent 1562 // modifications. 1563 synchronized (list) { 1564 final List<byte[]> history = 1565 (List<byte[]>) inState.getSerializable("history"); 1566 final int size = history.size(); 1567 // Check the index bounds so we don't crash in native code while 1568 // restoring the history index. 1569 if (index < 0 || index >= size) { 1570 return null; 1571 } 1572 for (int i = 0; i < size; i++) { 1573 byte[] data = history.remove(0); 1574 if (data == null) { 1575 // If we somehow have null data, we cannot reconstruct 1576 // the item and thus our history list cannot be rebuilt. 1577 return null; 1578 } 1579 WebHistoryItem item = new WebHistoryItem(data); 1580 list.addHistoryItem(item); 1581 } 1582 // Grab the most recent copy to return to the caller. 1583 returnList = copyBackForwardList(); 1584 // Update the copy to have the correct index. 1585 returnList.setCurrentIndex(index); 1586 } 1587 // Restore private browsing setting. 1588 if (inState.getBoolean("privateBrowsingEnabled")) { 1589 getSettings().setPrivateBrowsingEnabled(true); 1590 } 1591 mZoomManager.restoreZoomState(inState); 1592 // Remove all pending messages because we are restoring previous 1593 // state. 1594 mWebViewCore.removeMessages(); 1595 // Send a restore state message. 1596 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1597 } 1598 return returnList; 1599 } 1600 1601 /** 1602 * Load the given url with the extra headers. 1603 * @param url The url of the resource to load. 1604 * @param extraHeaders The extra headers sent with this url. This should not 1605 * include the common headers like "user-agent". If it does, it 1606 * will be replaced by the intrinsic value of the WebView. 1607 */ 1608 public void loadUrl(String url, Map<String, String> extraHeaders) { 1609 switchOutDrawHistory(); 1610 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1611 arg.mUrl = url; 1612 arg.mExtraHeaders = extraHeaders; 1613 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1614 clearHelpers(); 1615 } 1616 1617 /** 1618 * Load the given url. 1619 * @param url The url of the resource to load. 1620 */ 1621 public void loadUrl(String url) { 1622 if (url == null) { 1623 return; 1624 } 1625 loadUrl(url, null); 1626 } 1627 1628 /** 1629 * Load the url with postData using "POST" method into the WebView. If url 1630 * is not a network url, it will be loaded with {link 1631 * {@link #loadUrl(String)} instead. 1632 * 1633 * @param url The url of the resource to load. 1634 * @param postData The data will be passed to "POST" request. 1635 */ 1636 public void postUrl(String url, byte[] postData) { 1637 if (URLUtil.isNetworkUrl(url)) { 1638 switchOutDrawHistory(); 1639 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1640 arg.mUrl = url; 1641 arg.mPostData = postData; 1642 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1643 clearHelpers(); 1644 } else { 1645 loadUrl(url); 1646 } 1647 } 1648 1649 /** 1650 * Load the given data into the WebView. This will load the data into 1651 * WebView using the data: scheme. Content loaded through this mechanism 1652 * does not have the ability to load content from the network. 1653 * @param data A String of data in the given encoding. The date must 1654 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1655 * %27, %3f respectively. 1656 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1657 * @param encoding The encoding of the data. i.e. utf-8, base64 1658 */ 1659 public void loadData(String data, String mimeType, String encoding) { 1660 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1661 } 1662 1663 /** 1664 * Load the given data into the WebView, use the provided URL as the base 1665 * URL for the content. The base URL is the URL that represents the page 1666 * that is loaded through this interface. As such, it is used to resolve any 1667 * relative URLs. The historyUrl is used for the history entry. 1668 * <p> 1669 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1670 * files through "file:///android_asset/" for the sub resources is more 1671 * restricted. If you provide null or empty string as baseUrl, you won't be 1672 * able to access asset files. If the baseUrl is anything other than 1673 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1674 * sub resources. 1675 * 1676 * @param baseUrl Url to resolve relative paths with, if null defaults to 1677 * "about:blank" 1678 * @param data A String of data in the given encoding. 1679 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1680 * defaults to "text/html" 1681 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1682 * @param historyUrl URL to use as the history entry. Can be null. 1683 */ 1684 public void loadDataWithBaseURL(String baseUrl, String data, 1685 String mimeType, String encoding, String historyUrl) { 1686 1687 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1688 loadData(data, mimeType, encoding); 1689 return; 1690 } 1691 switchOutDrawHistory(); 1692 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1693 arg.mBaseUrl = baseUrl; 1694 arg.mData = data; 1695 arg.mMimeType = mimeType; 1696 arg.mEncoding = encoding; 1697 arg.mHistoryUrl = historyUrl; 1698 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1699 clearHelpers(); 1700 } 1701 1702 /** 1703 * Saves the current view as a web archive. 1704 * 1705 * @param filename The filename where the archive should be placed. 1706 */ 1707 public void saveWebArchive(String filename) { 1708 saveWebArchive(filename, false, null); 1709 } 1710 1711 /* package */ static class SaveWebArchiveMessage { 1712 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1713 mBasename = basename; 1714 mAutoname = autoname; 1715 mCallback = callback; 1716 } 1717 1718 /* package */ final String mBasename; 1719 /* package */ final boolean mAutoname; 1720 /* package */ final ValueCallback<String> mCallback; 1721 /* package */ String mResultFile; 1722 } 1723 1724 /** 1725 * Saves the current view as a web archive. 1726 * 1727 * @param basename The filename where the archive should be placed. 1728 * @param autoname If false, takes basename to be a file. If true, basename 1729 * is assumed to be a directory in which a filename will be 1730 * chosen according to the url of the current page. 1731 * @param callback Called after the web archive has been saved. The 1732 * parameter for onReceiveValue will either be the filename 1733 * under which the file was saved, or null if saving the 1734 * file failed. 1735 */ 1736 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1737 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1738 new SaveWebArchiveMessage(basename, autoname, callback)); 1739 } 1740 1741 /** 1742 * Stop the current load. 1743 */ 1744 public void stopLoading() { 1745 // TODO: should we clear all the messages in the queue before sending 1746 // STOP_LOADING? 1747 switchOutDrawHistory(); 1748 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1749 } 1750 1751 /** 1752 * Reload the current url. 1753 */ 1754 public void reload() { 1755 clearHelpers(); 1756 switchOutDrawHistory(); 1757 mWebViewCore.sendMessage(EventHub.RELOAD); 1758 } 1759 1760 /** 1761 * Return true if this WebView has a back history item. 1762 * @return True iff this WebView has a back history item. 1763 */ 1764 public boolean canGoBack() { 1765 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1766 synchronized (l) { 1767 if (l.getClearPending()) { 1768 return false; 1769 } else { 1770 return l.getCurrentIndex() > 0; 1771 } 1772 } 1773 } 1774 1775 /** 1776 * Go back in the history of this WebView. 1777 */ 1778 public void goBack() { 1779 goBackOrForward(-1); 1780 } 1781 1782 /** 1783 * Return true if this WebView has a forward history item. 1784 * @return True iff this Webview has a forward history item. 1785 */ 1786 public boolean canGoForward() { 1787 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1788 synchronized (l) { 1789 if (l.getClearPending()) { 1790 return false; 1791 } else { 1792 return l.getCurrentIndex() < l.getSize() - 1; 1793 } 1794 } 1795 } 1796 1797 /** 1798 * Go forward in the history of this WebView. 1799 */ 1800 public void goForward() { 1801 goBackOrForward(1); 1802 } 1803 1804 /** 1805 * Return true if the page can go back or forward the given 1806 * number of steps. 1807 * @param steps The negative or positive number of steps to move the 1808 * history. 1809 */ 1810 public boolean canGoBackOrForward(int steps) { 1811 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1812 synchronized (l) { 1813 if (l.getClearPending()) { 1814 return false; 1815 } else { 1816 int newIndex = l.getCurrentIndex() + steps; 1817 return newIndex >= 0 && newIndex < l.getSize(); 1818 } 1819 } 1820 } 1821 1822 /** 1823 * Go to the history item that is the number of steps away from 1824 * the current item. Steps is negative if backward and positive 1825 * if forward. 1826 * @param steps The number of steps to take back or forward in the back 1827 * forward list. 1828 */ 1829 public void goBackOrForward(int steps) { 1830 goBackOrForward(steps, false); 1831 } 1832 1833 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1834 if (steps != 0) { 1835 clearHelpers(); 1836 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1837 ignoreSnapshot ? 1 : 0); 1838 } 1839 } 1840 1841 /** 1842 * Returns true if private browsing is enabled in this WebView. 1843 */ 1844 public boolean isPrivateBrowsingEnabled() { 1845 return getSettings().isPrivateBrowsingEnabled(); 1846 } 1847 1848 private void startPrivateBrowsing() { 1849 boolean wasPrivateBrowsingEnabled = isPrivateBrowsingEnabled(); 1850 1851 getSettings().setPrivateBrowsingEnabled(true); 1852 1853 if (!wasPrivateBrowsingEnabled) { 1854 loadUrl("browser:incognito"); 1855 } 1856 } 1857 1858 /** 1859 * Deletes any files that were created as a part of the last private 1860 * browsing session and clears any internal state associated with that 1861 * session. The consequences of calling this method while a private 1862 * browsing session is active are unspecified. 1863 * @param context The same context which was used to create the private 1864 * browsing WebView. 1865 * @return True if the private browsing files were successfully deleted, 1866 * false otherwise. 1867 * @hide pending API council approval. 1868 */ 1869 public static boolean cleanupPrivateBrowsingFiles(Context context) { 1870 return nativeCleanupPrivateBrowsingFiles(context.getFilesDir().getParent()); 1871 } 1872 1873 private static native boolean nativeCleanupPrivateBrowsingFiles(String dataDirectory); 1874 1875 private boolean extendScroll(int y) { 1876 int finalY = mScroller.getFinalY(); 1877 int newY = pinLocY(finalY + y); 1878 if (newY == finalY) return false; 1879 mScroller.setFinalY(newY); 1880 mScroller.extendDuration(computeDuration(0, y)); 1881 return true; 1882 } 1883 1884 /** 1885 * Scroll the contents of the view up by half the view size 1886 * @param top true to jump to the top of the page 1887 * @return true if the page was scrolled 1888 */ 1889 public boolean pageUp(boolean top) { 1890 if (mNativeClass == 0) { 1891 return false; 1892 } 1893 nativeClearCursor(); // start next trackball movement from page edge 1894 if (top) { 1895 // go to the top of the document 1896 return pinScrollTo(mScrollX, 0, true, 0); 1897 } 1898 // Page up 1899 int h = getHeight(); 1900 int y; 1901 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1902 y = -h + PAGE_SCROLL_OVERLAP; 1903 } else { 1904 y = -h / 2; 1905 } 1906 mUserScroll = true; 1907 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1908 : extendScroll(y); 1909 } 1910 1911 /** 1912 * Scroll the contents of the view down by half the page size 1913 * @param bottom true to jump to bottom of page 1914 * @return true if the page was scrolled 1915 */ 1916 public boolean pageDown(boolean bottom) { 1917 if (mNativeClass == 0) { 1918 return false; 1919 } 1920 nativeClearCursor(); // start next trackball movement from page edge 1921 if (bottom) { 1922 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1923 } 1924 // Page down. 1925 int h = getHeight(); 1926 int y; 1927 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1928 y = h - PAGE_SCROLL_OVERLAP; 1929 } else { 1930 y = h / 2; 1931 } 1932 mUserScroll = true; 1933 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1934 : extendScroll(y); 1935 } 1936 1937 /** 1938 * Clear the view so that onDraw() will draw nothing but white background, 1939 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1940 */ 1941 public void clearView() { 1942 mContentWidth = 0; 1943 mContentHeight = 0; 1944 if (mNativeClass != 0) nativeSetBaseLayer(0); 1945 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1946 } 1947 1948 /** 1949 * Return a new picture that captures the current display of the webview. 1950 * This is a copy of the display, and will be unaffected if the webview 1951 * later loads a different URL. 1952 * 1953 * @return a picture containing the current contents of the view. Note this 1954 * picture is of the entire document, and is not restricted to the 1955 * bounds of the view. 1956 */ 1957 public Picture capturePicture() { 1958 Picture result = new Picture(); 1959 nativeCopyBaseContentToPicture(result); 1960 return result; 1961 } 1962 1963 /** 1964 * Return true if the browser is displaying a TextView for text input. 1965 */ 1966 private boolean inEditingMode() { 1967 return mWebTextView != null && mWebTextView.getParent() != null; 1968 } 1969 1970 /** 1971 * Remove the WebTextView. 1972 */ 1973 private void clearTextEntry() { 1974 if (inEditingMode()) { 1975 mWebTextView.remove(); 1976 } else { 1977 // The keyboard may be open with the WebView as the served view 1978 hideSoftKeyboard(); 1979 } 1980 } 1981 1982 /** 1983 * Return the current scale of the WebView 1984 * @return The current scale. 1985 */ 1986 public float getScale() { 1987 return mZoomManager.getScale(); 1988 } 1989 1990 /** 1991 * Set the initial scale for the WebView. 0 means default. If 1992 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1993 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1994 * WebView starts will this value as initial scale. 1995 * 1996 * @param scaleInPercent The initial scale in percent. 1997 */ 1998 public void setInitialScale(int scaleInPercent) { 1999 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2000 } 2001 2002 /** 2003 * Invoke the graphical zoom picker widget for this WebView. This will 2004 * result in the zoom widget appearing on the screen to control the zoom 2005 * level of this WebView. 2006 */ 2007 public void invokeZoomPicker() { 2008 if (!getSettings().supportZoom()) { 2009 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2010 return; 2011 } 2012 clearHelpers(); 2013 mZoomManager.invokeZoomPicker(); 2014 } 2015 2016 /** 2017 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2018 * is found and the anchor has a non-javascript url, the HitTestResult type 2019 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2020 * anchor does not have a url or if it is a javascript url, the type will 2021 * be UNKNOWN_TYPE and the url has to be retrieved through 2022 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2023 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2024 * the "extra" field. A type of 2025 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2026 * a child node. If a phone number is found, the HitTestResult type is set 2027 * to PHONE_TYPE and the phone number is set in the "extra" field of 2028 * HitTestResult. If a map address is found, the HitTestResult type is set 2029 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2030 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2031 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2032 * HitTestResult type is set to UNKNOWN_TYPE. 2033 */ 2034 public HitTestResult getHitTestResult() { 2035 if (mNativeClass == 0) { 2036 return null; 2037 } 2038 2039 HitTestResult result = new HitTestResult(); 2040 if (nativeHasCursorNode()) { 2041 if (nativeCursorIsTextInput()) { 2042 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2043 } else { 2044 String text = nativeCursorText(); 2045 if (text != null) { 2046 if (text.startsWith(SCHEME_TEL)) { 2047 result.setType(HitTestResult.PHONE_TYPE); 2048 result.setExtra(text.substring(SCHEME_TEL.length())); 2049 } else if (text.startsWith(SCHEME_MAILTO)) { 2050 result.setType(HitTestResult.EMAIL_TYPE); 2051 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2052 } else if (text.startsWith(SCHEME_GEO)) { 2053 result.setType(HitTestResult.GEO_TYPE); 2054 result.setExtra(URLDecoder.decode(text 2055 .substring(SCHEME_GEO.length()))); 2056 } else if (nativeCursorIsAnchor()) { 2057 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2058 result.setExtra(text); 2059 } 2060 } 2061 } 2062 } 2063 int type = result.getType(); 2064 if (type == HitTestResult.UNKNOWN_TYPE 2065 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2066 // Now check to see if it is an image. 2067 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2068 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2069 String text = nativeImageURI(contentX, contentY); 2070 if (text != null) { 2071 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2072 HitTestResult.IMAGE_TYPE : 2073 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2074 result.setExtra(text); 2075 } 2076 } 2077 return result; 2078 } 2079 2080 // Called by JNI when the DOM has changed the focus. Clear the focus so 2081 // that new keys will go to the newly focused field 2082 private void domChangedFocus() { 2083 if (inEditingMode()) { 2084 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2085 } 2086 } 2087 /** 2088 * Request the href of an anchor element due to getFocusNodePath returning 2089 * "href." If hrefMsg is null, this method returns immediately and does not 2090 * dispatch hrefMsg to its target. 2091 * 2092 * @param hrefMsg This message will be dispatched with the result of the 2093 * request as the data member with "url" as key. The result can 2094 * be null. 2095 */ 2096 // FIXME: API change required to change the name of this function. We now 2097 // look at the cursor node, and not the focus node. Also, what is 2098 // getFocusNodePath? 2099 public void requestFocusNodeHref(Message hrefMsg) { 2100 if (hrefMsg == null || mNativeClass == 0) { 2101 return; 2102 } 2103 if (nativeCursorIsAnchor()) { 2104 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2105 nativeCursorFramePointer(), nativeCursorNodePointer(), 2106 hrefMsg); 2107 } 2108 } 2109 2110 /** 2111 * Request the url of the image last touched by the user. msg will be sent 2112 * to its target with a String representing the url as its object. 2113 * 2114 * @param msg This message will be dispatched with the result of the request 2115 * as the data member with "url" as key. The result can be null. 2116 */ 2117 public void requestImageRef(Message msg) { 2118 if (0 == mNativeClass) return; // client isn't initialized 2119 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2120 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2121 String ref = nativeImageURI(contentX, contentY); 2122 Bundle data = msg.getData(); 2123 data.putString("url", ref); 2124 msg.setData(data); 2125 msg.sendToTarget(); 2126 } 2127 2128 static int pinLoc(int x, int viewMax, int docMax) { 2129// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2130 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2131 // pin the short document to the top/left of the screen 2132 x = 0; 2133// Log.d(LOGTAG, "--- center " + x); 2134 } else if (x < 0) { 2135 x = 0; 2136// Log.d(LOGTAG, "--- zero"); 2137 } else if (x + viewMax > docMax) { 2138 x = docMax - viewMax; 2139// Log.d(LOGTAG, "--- pin " + x); 2140 } 2141 return x; 2142 } 2143 2144 // Expects x in view coordinates 2145 int pinLocX(int x) { 2146 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 2147 } 2148 2149 // Expects y in view coordinates 2150 int pinLocY(int y) { 2151 return pinLoc(y, getViewHeightWithTitle(), 2152 computeVerticalScrollRange() + getTitleHeight()); 2153 } 2154 2155 /** 2156 * A title bar which is embedded in this WebView, and scrolls along with it 2157 * vertically, but not horizontally. 2158 */ 2159 private View mTitleBar; 2160 2161 /** 2162 * Since we draw the title bar ourselves, we removed the shadow from the 2163 * browser's activity. We do want a shadow at the bottom of the title bar, 2164 * or at the top of the screen if the title bar is not visible. This 2165 * drawable serves that purpose. 2166 */ 2167 private Drawable mTitleShadow; 2168 2169 /** 2170 * Add or remove a title bar to be embedded into the WebView, and scroll 2171 * along with it vertically, while remaining in view horizontally. Pass 2172 * null to remove the title bar from the WebView, and return to drawing 2173 * the WebView normally without translating to account for the title bar. 2174 * @hide 2175 */ 2176 public void setEmbeddedTitleBar(View v) { 2177 if (null == v) { 2178 // If one of our callbacks is holding onto the titlebar to replace 2179 // it when its ActionMode ends, remove it. 2180 if (mSelectCallback != null) { 2181 mSelectCallback.setTitleBar(null); 2182 } 2183 if (mFindCallback != null) { 2184 mFindCallback.setTitleBar(null); 2185 } 2186 } 2187 if (mTitleBar == v) return; 2188 if (mTitleBar != null) { 2189 removeView(mTitleBar); 2190 } 2191 if (null != v) { 2192 addView(v, new AbsoluteLayout.LayoutParams( 2193 ViewGroup.LayoutParams.MATCH_PARENT, 2194 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2195 if (mTitleShadow == null) { 2196 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 2197 com.android.internal.R.drawable.title_bar_shadow); 2198 } 2199 } 2200 mTitleBar = v; 2201 } 2202 2203 /** 2204 * Given a distance in view space, convert it to content space. Note: this 2205 * does not reflect translation, just scaling, so this should not be called 2206 * with coordinates, but should be called for dimensions like width or 2207 * height. 2208 */ 2209 private int viewToContentDimension(int d) { 2210 return Math.round(d * mZoomManager.getInvScale()); 2211 } 2212 2213 /** 2214 * Given an x coordinate in view space, convert it to content space. Also 2215 * may be used for absolute heights (such as for the WebTextView's 2216 * textSize, which is unaffected by the height of the title bar). 2217 */ 2218 /*package*/ int viewToContentX(int x) { 2219 return viewToContentDimension(x); 2220 } 2221 2222 /** 2223 * Given a y coordinate in view space, convert it to content space. 2224 * Takes into account the height of the title bar if there is one 2225 * embedded into the WebView. 2226 */ 2227 /*package*/ int viewToContentY(int y) { 2228 return viewToContentDimension(y - getTitleHeight()); 2229 } 2230 2231 /** 2232 * Given a x coordinate in view space, convert it to content space. 2233 * Returns the result as a float. 2234 */ 2235 private float viewToContentXf(int x) { 2236 return x * mZoomManager.getInvScale(); 2237 } 2238 2239 /** 2240 * Given a y coordinate in view space, convert it to content space. 2241 * Takes into account the height of the title bar if there is one 2242 * embedded into the WebView. Returns the result as a float. 2243 */ 2244 private float viewToContentYf(int y) { 2245 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2246 } 2247 2248 /** 2249 * Given a distance in content space, convert it to view space. Note: this 2250 * does not reflect translation, just scaling, so this should not be called 2251 * with coordinates, but should be called for dimensions like width or 2252 * height. 2253 */ 2254 /*package*/ int contentToViewDimension(int d) { 2255 return Math.round(d * mZoomManager.getScale()); 2256 } 2257 2258 /** 2259 * Given an x coordinate in content space, convert it to view 2260 * space. 2261 */ 2262 /*package*/ int contentToViewX(int x) { 2263 return contentToViewDimension(x); 2264 } 2265 2266 /** 2267 * Given a y coordinate in content space, convert it to view 2268 * space. Takes into account the height of the title bar. 2269 */ 2270 /*package*/ int contentToViewY(int y) { 2271 return contentToViewDimension(y) + getTitleHeight(); 2272 } 2273 2274 private Rect contentToViewRect(Rect x) { 2275 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2276 contentToViewX(x.right), contentToViewY(x.bottom)); 2277 } 2278 2279 /* To invalidate a rectangle in content coordinates, we need to transform 2280 the rect into view coordinates, so we can then call invalidate(...). 2281 2282 Normally, we would just call contentToView[XY](...), which eventually 2283 calls Math.round(coordinate * mActualScale). However, for invalidates, 2284 we need to account for the slop that occurs with antialiasing. To 2285 address that, we are a little more liberal in the size of the rect that 2286 we invalidate. 2287 2288 This liberal calculation calls floor() for the top/left, and ceil() for 2289 the bottom/right coordinates. This catches the possible extra pixels of 2290 antialiasing that we might have missed with just round(). 2291 */ 2292 2293 // Called by JNI to invalidate the View, given rectangle coordinates in 2294 // content space 2295 private void viewInvalidate(int l, int t, int r, int b) { 2296 final float scale = mZoomManager.getScale(); 2297 final int dy = getTitleHeight(); 2298 invalidate((int)Math.floor(l * scale), 2299 (int)Math.floor(t * scale) + dy, 2300 (int)Math.ceil(r * scale), 2301 (int)Math.ceil(b * scale) + dy); 2302 } 2303 2304 // Called by JNI to invalidate the View after a delay, given rectangle 2305 // coordinates in content space 2306 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2307 final float scale = mZoomManager.getScale(); 2308 final int dy = getTitleHeight(); 2309 postInvalidateDelayed(delay, 2310 (int)Math.floor(l * scale), 2311 (int)Math.floor(t * scale) + dy, 2312 (int)Math.ceil(r * scale), 2313 (int)Math.ceil(b * scale) + dy); 2314 } 2315 2316 private void invalidateContentRect(Rect r) { 2317 viewInvalidate(r.left, r.top, r.right, r.bottom); 2318 } 2319 2320 // stop the scroll animation, and don't let a subsequent fling add 2321 // to the existing velocity 2322 private void abortAnimation() { 2323 mScroller.abortAnimation(); 2324 mLastVelocity = 0; 2325 } 2326 2327 /* call from webcoreview.draw(), so we're still executing in the UI thread 2328 */ 2329 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2330 2331 // premature data from webkit, ignore 2332 if ((w | h) == 0) { 2333 return; 2334 } 2335 2336 // don't abort a scroll animation if we didn't change anything 2337 if (mContentWidth != w || mContentHeight != h) { 2338 // record new dimensions 2339 mContentWidth = w; 2340 mContentHeight = h; 2341 // If history Picture is drawn, don't update scroll. They will be 2342 // updated when we get out of that mode. 2343 if (!mDrawHistory) { 2344 // repin our scroll, taking into account the new content size 2345 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2346 if (!mScroller.isFinished()) { 2347 // We are in the middle of a scroll. Repin the final scroll 2348 // position. 2349 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2350 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2351 } 2352 } 2353 } 2354 contentSizeChanged(updateLayout); 2355 } 2356 2357 // Used to avoid sending many visible rect messages. 2358 private Rect mLastVisibleRectSent; 2359 private Rect mLastGlobalRect; 2360 2361 Rect sendOurVisibleRect() { 2362 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2363 2364 Rect rect = new Rect(); 2365 calcOurContentVisibleRect(rect); 2366 // Rect.equals() checks for null input. 2367 if (!rect.equals(mLastVisibleRectSent)) { 2368 Point pos = new Point(rect.left, rect.top); 2369 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2370 nativeMoveGeneration(), 0, pos); 2371 mLastVisibleRectSent = rect; 2372 } 2373 Rect globalRect = new Rect(); 2374 if (getGlobalVisibleRect(globalRect) 2375 && !globalRect.equals(mLastGlobalRect)) { 2376 if (DebugFlags.WEB_VIEW) { 2377 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2378 + globalRect.top + ",r=" + globalRect.right + ",b=" 2379 + globalRect.bottom); 2380 } 2381 // TODO: the global offset is only used by windowRect() 2382 // in ChromeClientAndroid ; other clients such as touch 2383 // and mouse events could return view + screen relative points. 2384 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2385 mLastGlobalRect = globalRect; 2386 } 2387 return rect; 2388 } 2389 2390 // Sets r to be the visible rectangle of our webview in view coordinates 2391 private void calcOurVisibleRect(Rect r) { 2392 Point p = new Point(); 2393 getGlobalVisibleRect(r, p); 2394 r.offset(-p.x, -p.y); 2395 } 2396 2397 // Sets r to be our visible rectangle in content coordinates 2398 private void calcOurContentVisibleRect(Rect r) { 2399 calcOurVisibleRect(r); 2400 // pin the rect to the bounds of the content 2401 r.left = Math.max(viewToContentX(r.left), 0); 2402 // viewToContentY will remove the total height of the title bar. Add 2403 // the visible height back in to account for the fact that if the title 2404 // bar is partially visible, the part of the visible rect which is 2405 // displaying our content is displaced by that amount. 2406 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2407 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2408 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2409 } 2410 2411 // Sets r to be our visible rectangle in content coordinates. We use this 2412 // method on the native side to compute the position of the fixed layers. 2413 // Uses floating coordinates (necessary to correctly place elements when 2414 // the scale factor is not 1) 2415 private void calcOurContentVisibleRectF(RectF r) { 2416 Rect ri = new Rect(0,0,0,0); 2417 calcOurVisibleRect(ri); 2418 // pin the rect to the bounds of the content 2419 r.left = Math.max(viewToContentXf(ri.left), 0.0f); 2420 // viewToContentY will remove the total height of the title bar. Add 2421 // the visible height back in to account for the fact that if the title 2422 // bar is partially visible, the part of the visible rect which is 2423 // displaying our content is displaced by that amount. 2424 r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f); 2425 r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth); 2426 r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight); 2427 } 2428 2429 static class ViewSizeData { 2430 int mWidth; 2431 int mHeight; 2432 int mTextWrapWidth; 2433 int mAnchorX; 2434 int mAnchorY; 2435 float mScale; 2436 boolean mIgnoreHeight; 2437 } 2438 2439 /** 2440 * Compute unzoomed width and height, and if they differ from the last 2441 * values we sent, send them to webkit (to be used as new viewport) 2442 * 2443 * @param force ensures that the message is sent to webkit even if the width 2444 * or height has not changed since the last message 2445 * 2446 * @return true if new values were sent 2447 */ 2448 boolean sendViewSizeZoom(boolean force) { 2449 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2450 2451 int viewWidth = getViewWidth(); 2452 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2453 int newHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2454 /* 2455 * Because the native side may have already done a layout before the 2456 * View system was able to measure us, we have to send a height of 0 to 2457 * remove excess whitespace when we grow our width. This will trigger a 2458 * layout and a change in content size. This content size change will 2459 * mean that contentSizeChanged will either call this method directly or 2460 * indirectly from onSizeChanged. 2461 */ 2462 if (newWidth > mLastWidthSent && mWrapContent) { 2463 newHeight = 0; 2464 } 2465 // Avoid sending another message if the dimensions have not changed. 2466 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force) { 2467 ViewSizeData data = new ViewSizeData(); 2468 data.mWidth = newWidth; 2469 data.mHeight = newHeight; 2470 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2471 data.mScale = mZoomManager.getScale(); 2472 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2473 && !mHeightCanMeasure; 2474 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2475 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2476 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2477 mLastWidthSent = newWidth; 2478 mLastHeightSent = newHeight; 2479 mZoomManager.clearDocumentAnchor(); 2480 return true; 2481 } 2482 return false; 2483 } 2484 2485 @Override 2486 protected int computeHorizontalScrollRange() { 2487 if (mDrawHistory) { 2488 return mHistoryWidth; 2489 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2490 && !mZoomManager.canZoomOut()) { 2491 // only honor the scrollbar mode when it is at minimum zoom level 2492 return computeHorizontalScrollExtent(); 2493 } else { 2494 // to avoid rounding error caused unnecessary scrollbar, use floor 2495 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2496 } 2497 } 2498 2499 @Override 2500 protected int computeVerticalScrollRange() { 2501 if (mDrawHistory) { 2502 return mHistoryHeight; 2503 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2504 && !mZoomManager.canZoomOut()) { 2505 // only honor the scrollbar mode when it is at minimum zoom level 2506 return computeVerticalScrollExtent(); 2507 } else { 2508 // to avoid rounding error caused unnecessary scrollbar, use floor 2509 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2510 } 2511 } 2512 2513 @Override 2514 protected int computeVerticalScrollOffset() { 2515 return Math.max(mScrollY - getTitleHeight(), 0); 2516 } 2517 2518 @Override 2519 protected int computeVerticalScrollExtent() { 2520 return getViewHeight(); 2521 } 2522 2523 /** @hide */ 2524 @Override 2525 protected void onDrawVerticalScrollBar(Canvas canvas, 2526 Drawable scrollBar, 2527 int l, int t, int r, int b) { 2528 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2529 scrollBar.draw(canvas); 2530 } 2531 2532 /** 2533 * Get the url for the current page. This is not always the same as the url 2534 * passed to WebViewClient.onPageStarted because although the load for 2535 * that url has begun, the current page may not have changed. 2536 * @return The url for the current page. 2537 */ 2538 public String getUrl() { 2539 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2540 return h != null ? h.getUrl() : null; 2541 } 2542 2543 /** 2544 * Get the original url for the current page. This is not always the same 2545 * as the url passed to WebViewClient.onPageStarted because although the 2546 * load for that url has begun, the current page may not have changed. 2547 * Also, there may have been redirects resulting in a different url to that 2548 * originally requested. 2549 * @return The url that was originally requested for the current page. 2550 */ 2551 public String getOriginalUrl() { 2552 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2553 return h != null ? h.getOriginalUrl() : null; 2554 } 2555 2556 /** 2557 * Get the title for the current page. This is the title of the current page 2558 * until WebViewClient.onReceivedTitle is called. 2559 * @return The title for the current page. 2560 */ 2561 public String getTitle() { 2562 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2563 return h != null ? h.getTitle() : null; 2564 } 2565 2566 /** 2567 * Get the favicon for the current page. This is the favicon of the current 2568 * page until WebViewClient.onReceivedIcon is called. 2569 * @return The favicon for the current page. 2570 */ 2571 public Bitmap getFavicon() { 2572 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2573 return h != null ? h.getFavicon() : null; 2574 } 2575 2576 /** 2577 * Get the touch icon url for the apple-touch-icon <link> element, or 2578 * a URL on this site's server pointing to the standard location of a 2579 * touch icon. 2580 * @hide 2581 */ 2582 public String getTouchIconUrl() { 2583 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2584 return h != null ? h.getTouchIconUrl() : null; 2585 } 2586 2587 /** 2588 * Get the progress for the current page. 2589 * @return The progress for the current page between 0 and 100. 2590 */ 2591 public int getProgress() { 2592 return mCallbackProxy.getProgress(); 2593 } 2594 2595 /** 2596 * @return the height of the HTML content. 2597 */ 2598 public int getContentHeight() { 2599 return mContentHeight; 2600 } 2601 2602 /** 2603 * @return the width of the HTML content. 2604 * @hide 2605 */ 2606 public int getContentWidth() { 2607 return mContentWidth; 2608 } 2609 2610 /** 2611 * Pause all layout, parsing, and javascript timers for all webviews. This 2612 * is a global requests, not restricted to just this webview. This can be 2613 * useful if the application has been paused. 2614 */ 2615 public void pauseTimers() { 2616 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2617 } 2618 2619 /** 2620 * Resume all layout, parsing, and javascript timers for all webviews. 2621 * This will resume dispatching all timers. 2622 */ 2623 public void resumeTimers() { 2624 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2625 } 2626 2627 /** 2628 * Call this to pause any extra processing associated with this view and 2629 * its associated DOM/plugins/javascript/etc. For example, if the view is 2630 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2631 * network traffic. When the view is again "active", call onResume(). 2632 * 2633 * Note that this differs from pauseTimers(), which affects all views/DOMs 2634 * @hide 2635 */ 2636 public void onPause() { 2637 if (!mIsPaused) { 2638 mIsPaused = true; 2639 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2640 } 2641 } 2642 2643 /** 2644 * Call this to balanace a previous call to onPause() 2645 * @hide 2646 */ 2647 public void onResume() { 2648 if (mIsPaused) { 2649 mIsPaused = false; 2650 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2651 } 2652 } 2653 2654 /** 2655 * Returns true if the view is paused, meaning onPause() was called. Calling 2656 * onResume() sets the paused state back to false. 2657 * @hide 2658 */ 2659 public boolean isPaused() { 2660 return mIsPaused; 2661 } 2662 2663 /** 2664 * Call this to inform the view that memory is low so that it can 2665 * free any available memory. 2666 */ 2667 public void freeMemory() { 2668 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2669 } 2670 2671 /** 2672 * Clear the resource cache. Note that the cache is per-application, so 2673 * this will clear the cache for all WebViews used. 2674 * 2675 * @param includeDiskFiles If false, only the RAM cache is cleared. 2676 */ 2677 public void clearCache(boolean includeDiskFiles) { 2678 // Note: this really needs to be a static method as it clears cache for all 2679 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2680 // we can't make this static. 2681 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2682 includeDiskFiles ? 1 : 0, 0); 2683 } 2684 2685 /** 2686 * Make sure that clearing the form data removes the adapter from the 2687 * currently focused textfield if there is one. 2688 */ 2689 public void clearFormData() { 2690 if (inEditingMode()) { 2691 AutoCompleteAdapter adapter = null; 2692 mWebTextView.setAdapterCustom(adapter); 2693 } 2694 } 2695 2696 /** 2697 * Tell the WebView to clear its internal back/forward list. 2698 */ 2699 public void clearHistory() { 2700 mCallbackProxy.getBackForwardList().setClearPending(); 2701 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2702 } 2703 2704 /** 2705 * Clear the SSL preferences table stored in response to proceeding with SSL 2706 * certificate errors. 2707 */ 2708 public void clearSslPreferences() { 2709 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2710 } 2711 2712 /** 2713 * Return the WebBackForwardList for this WebView. This contains the 2714 * back/forward list for use in querying each item in the history stack. 2715 * This is a copy of the private WebBackForwardList so it contains only a 2716 * snapshot of the current state. Multiple calls to this method may return 2717 * different objects. The object returned from this method will not be 2718 * updated to reflect any new state. 2719 */ 2720 public WebBackForwardList copyBackForwardList() { 2721 return mCallbackProxy.getBackForwardList().clone(); 2722 } 2723 2724 /* 2725 * Highlight and scroll to the next occurance of String in findAll. 2726 * Wraps the page infinitely, and scrolls. Must be called after 2727 * calling findAll. 2728 * 2729 * @param forward Direction to search. 2730 */ 2731 public void findNext(boolean forward) { 2732 if (0 == mNativeClass) return; // client isn't initialized 2733 nativeFindNext(forward); 2734 } 2735 2736 /* 2737 * Find all instances of find on the page and highlight them. 2738 * @param find String to find. 2739 * @return int The number of occurances of the String "find" 2740 * that were found. 2741 */ 2742 public int findAll(String find) { 2743 if (0 == mNativeClass) return 0; // client isn't initialized 2744 int result = find != null ? nativeFindAll(find.toLowerCase(), 2745 find.toUpperCase()) : 0; 2746 invalidate(); 2747 mLastFind = find; 2748 return result; 2749 } 2750 2751 /** 2752 * Start an ActionMode for finding text in this WebView. 2753 * @param text If non-null, will be the initial text to search for. 2754 * Otherwise, the last String searched for in this WebView will 2755 * be used to start. 2756 */ 2757 public void showFindDialog(String text) { 2758 mFindCallback = new FindActionModeCallback(mContext); 2759 setFindIsUp(true); 2760 mFindCallback.setWebView(this); 2761 View titleBar = mTitleBar; 2762 // We do not want to show the embedded title bar during find or 2763 // select, but keep track of it so that it can be replaced when the 2764 // mode is exited. 2765 setEmbeddedTitleBar(null); 2766 mFindCallback.setTitleBar(titleBar); 2767 startActionMode(mFindCallback); 2768 if (text == null) { 2769 text = mLastFind; 2770 } 2771 if (text != null) { 2772 mFindCallback.setText(text); 2773 } 2774 } 2775 2776 /** 2777 * Keep track of the find callback so that we can remove its titlebar if 2778 * necessary. 2779 */ 2780 private FindActionModeCallback mFindCallback; 2781 2782 /** 2783 * Toggle whether the find dialog is showing, for both native and Java. 2784 */ 2785 private void setFindIsUp(boolean isUp) { 2786 mFindIsUp = isUp; 2787 if (0 == mNativeClass) return; // client isn't initialized 2788 nativeSetFindIsUp(isUp); 2789 } 2790 2791 /** 2792 * Return the index of the currently highlighted match. 2793 */ 2794 int findIndex() { 2795 if (0 == mNativeClass) return -1; 2796 return nativeFindIndex(); 2797 } 2798 2799 // Used to know whether the find dialog is open. Affects whether 2800 // or not we draw the highlights for matches. 2801 private boolean mFindIsUp; 2802 2803 // Keep track of the last string sent, so we can search again when find is 2804 // reopened. 2805 private String mLastFind; 2806 2807 /** 2808 * Return the first substring consisting of the address of a physical 2809 * location. Currently, only addresses in the United States are detected, 2810 * and consist of: 2811 * - a house number 2812 * - a street name 2813 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2814 * - a city name 2815 * - a state or territory, either spelled out or two-letter abbr. 2816 * - an optional 5 digit or 9 digit zip code. 2817 * 2818 * All names must be correctly capitalized, and the zip code, if present, 2819 * must be valid for the state. The street type must be a standard USPS 2820 * spelling or abbreviation. The state or territory must also be spelled 2821 * or abbreviated using USPS standards. The house number may not exceed 2822 * five digits. 2823 * @param addr The string to search for addresses. 2824 * 2825 * @return the address, or if no address is found, return null. 2826 */ 2827 public static String findAddress(String addr) { 2828 return findAddress(addr, false); 2829 } 2830 2831 /** 2832 * @hide 2833 * Return the first substring consisting of the address of a physical 2834 * location. Currently, only addresses in the United States are detected, 2835 * and consist of: 2836 * - a house number 2837 * - a street name 2838 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2839 * - a city name 2840 * - a state or territory, either spelled out or two-letter abbr. 2841 * - an optional 5 digit or 9 digit zip code. 2842 * 2843 * Names are optionally capitalized, and the zip code, if present, 2844 * must be valid for the state. The street type must be a standard USPS 2845 * spelling or abbreviation. The state or territory must also be spelled 2846 * or abbreviated using USPS standards. The house number may not exceed 2847 * five digits. 2848 * @param addr The string to search for addresses. 2849 * @param caseInsensitive addr Set to true to make search ignore case. 2850 * 2851 * @return the address, or if no address is found, return null. 2852 */ 2853 public static String findAddress(String addr, boolean caseInsensitive) { 2854 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2855 } 2856 2857 /* 2858 * Clear the highlighting surrounding text matches created by findAll. 2859 */ 2860 public void clearMatches() { 2861 if (mNativeClass == 0) 2862 return; 2863 nativeSetFindIsEmpty(); 2864 invalidate(); 2865 } 2866 2867 /** 2868 * Called when the find ActionMode ends. 2869 */ 2870 void notifyFindDialogDismissed() { 2871 mFindCallback = null; 2872 if (mWebViewCore == null) { 2873 return; 2874 } 2875 clearMatches(); 2876 setFindIsUp(false); 2877 // Now that the dialog has been removed, ensure that we scroll to a 2878 // location that is not beyond the end of the page. 2879 pinScrollTo(mScrollX, mScrollY, false, 0); 2880 invalidate(); 2881 } 2882 2883 /** 2884 * Query the document to see if it contains any image references. The 2885 * message object will be dispatched with arg1 being set to 1 if images 2886 * were found and 0 if the document does not reference any images. 2887 * @param response The message that will be dispatched with the result. 2888 */ 2889 public void documentHasImages(Message response) { 2890 if (response == null) { 2891 return; 2892 } 2893 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2894 } 2895 2896 /** 2897 * Request the scroller to abort any ongoing animation 2898 * 2899 * @hide 2900 */ 2901 public void stopScroll() { 2902 mScroller.forceFinished(true); 2903 mLastVelocity = 0; 2904 } 2905 2906 @Override 2907 public void computeScroll() { 2908 if (mScroller.computeScrollOffset()) { 2909 int oldX = mScrollX; 2910 int oldY = mScrollY; 2911 mScrollX = mScroller.getCurrX(); 2912 mScrollY = mScroller.getCurrY(); 2913 postInvalidate(); // So we draw again 2914 if (oldX != mScrollX || oldY != mScrollY) { 2915 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2916 } else { 2917 abortAnimation(); 2918 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 2919 WebViewCore.resumePriority(); 2920 WebViewCore.resumeUpdatePicture(mWebViewCore); 2921 } 2922 } else { 2923 super.computeScroll(); 2924 } 2925 } 2926 2927 private static int computeDuration(int dx, int dy) { 2928 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2929 int duration = distance * 1000 / STD_SPEED; 2930 return Math.min(duration, MAX_DURATION); 2931 } 2932 2933 // helper to pin the scrollBy parameters (already in view coordinates) 2934 // returns true if the scroll was changed 2935 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2936 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2937 } 2938 // helper to pin the scrollTo parameters (already in view coordinates) 2939 // returns true if the scroll was changed 2940 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2941 x = pinLocX(x); 2942 y = pinLocY(y); 2943 int dx = x - mScrollX; 2944 int dy = y - mScrollY; 2945 2946 if ((dx | dy) == 0) { 2947 return false; 2948 } 2949 if (animate) { 2950 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2951 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2952 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2953 awakenScrollBars(mScroller.getDuration()); 2954 invalidate(); 2955 } else { 2956 abortAnimation(); // just in case 2957 scrollTo(x, y); 2958 } 2959 return true; 2960 } 2961 2962 // Scale from content to view coordinates, and pin. 2963 // Also called by jni webview.cpp 2964 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2965 if (mDrawHistory) { 2966 // disallow WebView to change the scroll position as History Picture 2967 // is used in the view system. 2968 // TODO: as we switchOutDrawHistory when trackball or navigation 2969 // keys are hit, this should be safe. Right? 2970 return false; 2971 } 2972 cx = contentToViewDimension(cx); 2973 cy = contentToViewDimension(cy); 2974 if (mHeightCanMeasure) { 2975 // move our visible rect according to scroll request 2976 if (cy != 0) { 2977 Rect tempRect = new Rect(); 2978 calcOurVisibleRect(tempRect); 2979 tempRect.offset(cx, cy); 2980 requestRectangleOnScreen(tempRect); 2981 } 2982 // FIXME: We scroll horizontally no matter what because currently 2983 // ScrollView and ListView will not scroll horizontally. 2984 // FIXME: Why do we only scroll horizontally if there is no 2985 // vertical scroll? 2986// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2987 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2988 } else { 2989 return pinScrollBy(cx, cy, animate, 0); 2990 } 2991 } 2992 2993 /** 2994 * Called by CallbackProxy when the page starts loading. 2995 * @param url The URL of the page which has started loading. 2996 */ 2997 /* package */ void onPageStarted(String url) { 2998 // every time we start a new page, we want to reset the 2999 // WebView certificate: if the new site is secure, we 3000 // will reload it and get a new certificate set; 3001 // if the new site is not secure, the certificate must be 3002 // null, and that will be the case 3003 setCertificate(null); 3004 3005 // reset the flag since we set to true in if need after 3006 // loading is see onPageFinished(Url) 3007 mAccessibilityScriptInjected = false; 3008 } 3009 3010 /** 3011 * Called by CallbackProxy when the page finishes loading. 3012 * @param url The URL of the page which has finished loading. 3013 */ 3014 /* package */ void onPageFinished(String url) { 3015 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3016 // If the user is now on a different page, or has scrolled the page 3017 // past the point where the title bar is offscreen, ignore the 3018 // scroll request. 3019 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3020 && mScrollX == 0 && mScrollY == 0) { 3021 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3022 SLIDE_TITLE_DURATION); 3023 } 3024 mPageThatNeedsToSlideTitleBarOffScreen = null; 3025 } 3026 3027 injectAccessibilityForUrl(url); 3028 } 3029 3030 /** 3031 * This method injects accessibility in the loaded document if accessibility 3032 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3033 * If no URL specific script is found or JavaScript is disabled we fallback to 3034 * the default {@link AccessibilityInjector} implementation. 3035 * </p> 3036 * If the URL has the "axs" paramter set to 1 it has already done the 3037 * script injection so we do nothing. If the parameter is set to 0 3038 * the URL opts out accessibility script injection so we fall back to 3039 * the default {@link AccessibilityInjector}. 3040 * </p> 3041 * Note: If the user has not opted-in the accessibility script injection no scripts 3042 * are injected rather the default {@link AccessibilityInjector} implementation 3043 * is used. 3044 * 3045 * @param url The URL loaded by this {@link WebView}. 3046 */ 3047 private void injectAccessibilityForUrl(String url) { 3048 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3049 3050 if (!accessibilityManager.isEnabled()) { 3051 // it is possible that accessibility was turned off between reloads 3052 ensureAccessibilityScriptInjectorInstance(false); 3053 return; 3054 } 3055 3056 if (!getSettings().getJavaScriptEnabled()) { 3057 // no JS so we fallback to the basic buil-in support 3058 ensureAccessibilityScriptInjectorInstance(true); 3059 return; 3060 } 3061 3062 // check the URL "axs" parameter to choose appropriate action 3063 int axsParameterValue = getAxsUrlParameterValue(url); 3064 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3065 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3066 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3067 if (onDeviceScriptInjectionEnabled) { 3068 ensureAccessibilityScriptInjectorInstance(false); 3069 // neither script injected nor script injection opted out => we inject 3070 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3071 // TODO: Set this flag after successfull script injection. Maybe upon injection 3072 // the chooser should update the meta tag and we check it to declare success 3073 mAccessibilityScriptInjected = true; 3074 } else { 3075 // injection disabled so we fallback to the basic built-in support 3076 ensureAccessibilityScriptInjectorInstance(true); 3077 } 3078 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3079 // injection opted out so we fallback to the basic buil-in support 3080 ensureAccessibilityScriptInjectorInstance(true); 3081 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3082 ensureAccessibilityScriptInjectorInstance(false); 3083 // the URL provides accessibility but we still need to add our generic script 3084 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3085 } else { 3086 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3087 } 3088 } 3089 3090 /** 3091 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3092 * 3093 * @param present True to ensure an insance, false to ensure no instance. 3094 */ 3095 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3096 if (present && mAccessibilityInjector == null) { 3097 mAccessibilityInjector = new AccessibilityInjector(this); 3098 } else { 3099 mAccessibilityInjector = null; 3100 } 3101 } 3102 3103 /** 3104 * Gets the "axs" URL parameter value. 3105 * 3106 * @param url A url to fetch the paramter from. 3107 * @return The parameter value if such, -1 otherwise. 3108 */ 3109 private int getAxsUrlParameterValue(String url) { 3110 if (mMatchAxsUrlParameterPattern == null) { 3111 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3112 } 3113 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3114 if (matcher.find()) { 3115 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3116 return Integer.parseInt(keyValuePair.split("=")[1]); 3117 } 3118 return -1; 3119 } 3120 3121 /** 3122 * The URL of a page that sent a message to scroll the title bar off screen. 3123 * 3124 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3125 * title bar off the screen. Sometimes, the scroll position is set before 3126 * the page finishes loading. Rather than scrolling while the page is still 3127 * loading, keep track of the URL and new scroll position so we can perform 3128 * the scroll once the page finishes loading. 3129 */ 3130 private String mPageThatNeedsToSlideTitleBarOffScreen; 3131 3132 /** 3133 * The destination Y scroll position to be used when the page finishes 3134 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3135 */ 3136 private int mYDistanceToSlideTitleOffScreen; 3137 3138 // scale from content to view coordinates, and pin 3139 // return true if pin caused the final x/y different than the request cx/cy, 3140 // and a future scroll may reach the request cx/cy after our size has 3141 // changed 3142 // return false if the view scroll to the exact position as it is requested, 3143 // where negative numbers are taken to mean 0 3144 private boolean setContentScrollTo(int cx, int cy) { 3145 if (mDrawHistory) { 3146 // disallow WebView to change the scroll position as History Picture 3147 // is used in the view system. 3148 // One known case where this is called is that WebCore tries to 3149 // restore the scroll position. As history Picture already uses the 3150 // saved scroll position, it is ok to skip this. 3151 return false; 3152 } 3153 int vx; 3154 int vy; 3155 if ((cx | cy) == 0) { 3156 // If the page is being scrolled to (0,0), do not add in the title 3157 // bar's height, and simply scroll to (0,0). (The only other work 3158 // in contentToView_ is to multiply, so this would not change 0.) 3159 vx = 0; 3160 vy = 0; 3161 } else { 3162 vx = contentToViewX(cx); 3163 vy = contentToViewY(cy); 3164 } 3165// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3166// vx + " " + vy + "]"); 3167 // Some mobile sites attempt to scroll the title bar off the page by 3168 // scrolling to (0,1). If we are at the top left corner of the 3169 // page, assume this is an attempt to scroll off the title bar, and 3170 // animate the title bar off screen slowly enough that the user can see 3171 // it. 3172 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3173 && mTitleBar != null) { 3174 // FIXME: 100 should be defined somewhere as our max progress. 3175 if (getProgress() < 100) { 3176 // Wait to scroll the title bar off screen until the page has 3177 // finished loading. Keep track of the URL and the destination 3178 // Y position 3179 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3180 mYDistanceToSlideTitleOffScreen = vy; 3181 } else { 3182 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3183 } 3184 // Since we are animating, we have not yet reached the desired 3185 // scroll position. Do not return true to request another attempt 3186 return false; 3187 } 3188 pinScrollTo(vx, vy, false, 0); 3189 // If the request was to scroll to a negative coordinate, treat it as if 3190 // it was a request to scroll to 0 3191 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3192 return true; 3193 } else { 3194 return false; 3195 } 3196 } 3197 3198 // scale from content to view coordinates, and pin 3199 private void spawnContentScrollTo(int cx, int cy) { 3200 if (mDrawHistory) { 3201 // disallow WebView to change the scroll position as History Picture 3202 // is used in the view system. 3203 return; 3204 } 3205 int vx = contentToViewX(cx); 3206 int vy = contentToViewY(cy); 3207 pinScrollTo(vx, vy, true, 0); 3208 } 3209 3210 /** 3211 * These are from webkit, and are in content coordinate system (unzoomed) 3212 */ 3213 private void contentSizeChanged(boolean updateLayout) { 3214 // suppress 0,0 since we usually see real dimensions soon after 3215 // this avoids drawing the prev content in a funny place. If we find a 3216 // way to consolidate these notifications, this check may become 3217 // obsolete 3218 if ((mContentWidth | mContentHeight) == 0) { 3219 return; 3220 } 3221 3222 if (mHeightCanMeasure) { 3223 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3224 || updateLayout) { 3225 requestLayout(); 3226 } 3227 } else if (mWidthCanMeasure) { 3228 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3229 || updateLayout) { 3230 requestLayout(); 3231 } 3232 } else { 3233 // If we don't request a layout, try to send our view size to the 3234 // native side to ensure that WebCore has the correct dimensions. 3235 sendViewSizeZoom(false); 3236 } 3237 } 3238 3239 /** 3240 * Set the WebViewClient that will receive various notifications and 3241 * requests. This will replace the current handler. 3242 * @param client An implementation of WebViewClient. 3243 */ 3244 public void setWebViewClient(WebViewClient client) { 3245 mCallbackProxy.setWebViewClient(client); 3246 } 3247 3248 /** 3249 * Gets the WebViewClient 3250 * @return the current WebViewClient instance. 3251 * 3252 *@hide pending API council approval. 3253 */ 3254 public WebViewClient getWebViewClient() { 3255 return mCallbackProxy.getWebViewClient(); 3256 } 3257 3258 /** 3259 * Register the interface to be used when content can not be handled by 3260 * the rendering engine, and should be downloaded instead. This will replace 3261 * the current handler. 3262 * @param listener An implementation of DownloadListener. 3263 */ 3264 public void setDownloadListener(DownloadListener listener) { 3265 mCallbackProxy.setDownloadListener(listener); 3266 } 3267 3268 /** 3269 * Set the chrome handler. This is an implementation of WebChromeClient for 3270 * use in handling Javascript dialogs, favicons, titles, and the progress. 3271 * This will replace the current handler. 3272 * @param client An implementation of WebChromeClient. 3273 */ 3274 public void setWebChromeClient(WebChromeClient client) { 3275 mCallbackProxy.setWebChromeClient(client); 3276 } 3277 3278 /** 3279 * Gets the chrome handler. 3280 * @return the current WebChromeClient instance. 3281 * 3282 * @hide API council approval. 3283 */ 3284 public WebChromeClient getWebChromeClient() { 3285 return mCallbackProxy.getWebChromeClient(); 3286 } 3287 3288 /** 3289 * Set the back/forward list client. This is an implementation of 3290 * WebBackForwardListClient for handling new items and changes in the 3291 * history index. 3292 * @param client An implementation of WebBackForwardListClient. 3293 * {@hide} 3294 */ 3295 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3296 mCallbackProxy.setWebBackForwardListClient(client); 3297 } 3298 3299 /** 3300 * Gets the WebBackForwardListClient. 3301 * {@hide} 3302 */ 3303 public WebBackForwardListClient getWebBackForwardListClient() { 3304 return mCallbackProxy.getWebBackForwardListClient(); 3305 } 3306 3307 /** 3308 * Set the Picture listener. This is an interface used to receive 3309 * notifications of a new Picture. 3310 * @param listener An implementation of WebView.PictureListener. 3311 */ 3312 public void setPictureListener(PictureListener listener) { 3313 mPictureListener = listener; 3314 } 3315 3316 /** 3317 * {@hide} 3318 */ 3319 /* FIXME: Debug only! Remove for SDK! */ 3320 public void externalRepresentation(Message callback) { 3321 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3322 } 3323 3324 /** 3325 * {@hide} 3326 */ 3327 /* FIXME: Debug only! Remove for SDK! */ 3328 public void documentAsText(Message callback) { 3329 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3330 } 3331 3332 /** 3333 * Use this function to bind an object to Javascript so that the 3334 * methods can be accessed from Javascript. 3335 * <p><strong>IMPORTANT:</strong> 3336 * <ul> 3337 * <li> Using addJavascriptInterface() allows JavaScript to control your 3338 * application. This can be a very useful feature or a dangerous security 3339 * issue. When the HTML in the WebView is untrustworthy (for example, part 3340 * or all of the HTML is provided by some person or process), then an 3341 * attacker could inject HTML that will execute your code and possibly any 3342 * code of the attacker's choosing.<br> 3343 * Do not use addJavascriptInterface() unless all of the HTML in this 3344 * WebView was written by you.</li> 3345 * <li> The Java object that is bound runs in another thread and not in 3346 * the thread that it was constructed in.</li> 3347 * </ul></p> 3348 * @param obj The class instance to bind to Javascript 3349 * @param interfaceName The name to used to expose the class in Javascript 3350 */ 3351 public void addJavascriptInterface(Object obj, String interfaceName) { 3352 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3353 arg.mObject = obj; 3354 arg.mInterfaceName = interfaceName; 3355 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3356 } 3357 3358 /** 3359 * Return the WebSettings object used to control the settings for this 3360 * WebView. 3361 * @return A WebSettings object that can be used to control this WebView's 3362 * settings. 3363 */ 3364 public WebSettings getSettings() { 3365 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3366 } 3367 3368 /** 3369 * Return the list of currently loaded plugins. 3370 * @return The list of currently loaded plugins. 3371 * 3372 * @deprecated This was used for Gears, which has been deprecated. 3373 */ 3374 @Deprecated 3375 public static synchronized PluginList getPluginList() { 3376 return new PluginList(); 3377 } 3378 3379 /** 3380 * @deprecated This was used for Gears, which has been deprecated. 3381 */ 3382 @Deprecated 3383 public void refreshPlugins(boolean reloadOpenPages) { } 3384 3385 //------------------------------------------------------------------------- 3386 // Override View methods 3387 //------------------------------------------------------------------------- 3388 3389 @Override 3390 protected void finalize() throws Throwable { 3391 try { 3392 destroy(); 3393 } finally { 3394 super.finalize(); 3395 } 3396 } 3397 3398 @Override 3399 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3400 if (child == mTitleBar) { 3401 // When drawing the title bar, move it horizontally to always show 3402 // at the top of the WebView. 3403 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3404 } 3405 return super.drawChild(canvas, child, drawingTime); 3406 } 3407 3408 private void drawContent(Canvas canvas) { 3409 // Update the buttons in the picture, so when we draw the picture 3410 // to the screen, they are in the correct state. 3411 // Tell the native side if user is a) touching the screen, 3412 // b) pressing the trackball down, or c) pressing the enter key 3413 // If the cursor is on a button, we need to draw it in the pressed 3414 // state. 3415 // If mNativeClass is 0, we should not reach here, so we do not 3416 // need to check it again. 3417 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3418 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3419 || mTrackballDown || mGotCenterDown, false); 3420 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3421 } 3422 3423 @Override 3424 protected void onDraw(Canvas canvas) { 3425 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3426 if (mNativeClass == 0) { 3427 return; 3428 } 3429 3430 // if both mContentWidth and mContentHeight are 0, it means there is no 3431 // valid Picture passed to WebView yet. This can happen when WebView 3432 // just starts. Draw the background and return. 3433 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3434 canvas.drawColor(mBackgroundColor); 3435 return; 3436 } 3437 3438 int saveCount = canvas.save(); 3439 if (mTitleBar != null) { 3440 canvas.translate(0, (int) mTitleBar.getHeight()); 3441 } 3442 if (mDragTrackerHandler == null) { 3443 drawContent(canvas); 3444 } else { 3445 if (!mDragTrackerHandler.draw(canvas)) { 3446 // sometimes the tracker doesn't draw, even though its active 3447 drawContent(canvas); 3448 } 3449 if (mDragTrackerHandler.isFinished()) { 3450 mDragTrackerHandler = null; 3451 } 3452 } 3453 canvas.restoreToCount(saveCount); 3454 3455 // Now draw the shadow. 3456 int titleH = getVisibleTitleHeight(); 3457 if (mTitleBar != null && titleH == 0) { 3458 int height = (int) (5f * getContext().getResources() 3459 .getDisplayMetrics().density); 3460 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3461 mScrollY + height); 3462 mTitleShadow.draw(canvas); 3463 } 3464 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3465 invalidate(); 3466 } 3467 if (inEditingMode()) mWebTextView.onDrawSubstitute(); 3468 mWebViewCore.signalRepaintDone(); 3469 3470 // paint the highlight in the end 3471 if (!mTouchHighlightRegion.isEmpty()) { 3472 if (mTouchHightlightPaint == null) { 3473 mTouchHightlightPaint = new Paint(); 3474 mTouchHightlightPaint.setColor(mHightlightColor); 3475 mTouchHightlightPaint.setAntiAlias(true); 3476 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3477 TOUCH_HIGHLIGHT_ARC)); 3478 } 3479 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3480 mTouchHightlightPaint); 3481 } 3482 if (DEBUG_TOUCH_HIGHLIGHT) { 3483 if (getSettings().getNavDump()) { 3484 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3485 if (mTouchCrossHairColor == null) { 3486 mTouchCrossHairColor = new Paint(); 3487 mTouchCrossHairColor.setColor(Color.RED); 3488 } 3489 canvas.drawLine(mTouchHighlightX - mNavSlop, 3490 mTouchHighlightY - mNavSlop, mTouchHighlightX 3491 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3492 + 1, mTouchCrossHairColor); 3493 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3494 mTouchHighlightY - mNavSlop, mTouchHighlightX 3495 - mNavSlop, 3496 mTouchHighlightY + mNavSlop + 1, 3497 mTouchCrossHairColor); 3498 } 3499 } 3500 } 3501 } 3502 3503 private void removeTouchHighlight(boolean removePendingMessage) { 3504 if (removePendingMessage) { 3505 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3506 } 3507 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3508 } 3509 3510 @Override 3511 public void setLayoutParams(ViewGroup.LayoutParams params) { 3512 if (params.height == LayoutParams.WRAP_CONTENT) { 3513 mWrapContent = true; 3514 } 3515 super.setLayoutParams(params); 3516 } 3517 3518 @Override 3519 public boolean performLongClick() { 3520 // performLongClick() is the result of a delayed message. If we switch 3521 // to windows overview, the WebView will be temporarily removed from the 3522 // view system. In that case, do nothing. 3523 if (getParent() == null) return false; 3524 3525 // A multi-finger gesture can look like a long press; make sure we don't take 3526 // long press actions if we're scaling. 3527 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3528 if (detector != null && detector.isInProgress()) { 3529 return false; 3530 } 3531 3532 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3533 // Send the click so that the textfield is in focus 3534 centerKeyPressOnTextField(); 3535 rebuildWebTextView(); 3536 } else { 3537 clearTextEntry(); 3538 } 3539 if (inEditingMode()) { 3540 return mWebTextView.performLongClick(); 3541 } 3542 /* if long click brings up a context menu, the super function 3543 * returns true and we're done. Otherwise, nothing happened when 3544 * the user clicked. */ 3545 if (super.performLongClick()) { 3546 return true; 3547 } 3548 /* In the case where the application hasn't already handled the long 3549 * click action, look for a word under the click. If one is found, 3550 * animate the text selection into view. 3551 * FIXME: no animation code yet */ 3552 if (mSelectingText) return false; // long click does nothing on selection 3553 int x = viewToContentX((int) mLastTouchX + mScrollX); 3554 int y = viewToContentY((int) mLastTouchY + mScrollY); 3555 setUpSelect(); 3556 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3557 nativeSetExtendSelection(); 3558 return true; 3559 } 3560 selectionDone(); 3561 return false; 3562 } 3563 3564 /** 3565 * Keep track of the Callback so we can end its ActionMode or remove its 3566 * titlebar. 3567 */ 3568 private SelectActionModeCallback mSelectCallback; 3569 3570 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3571 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3572 Rect vBox = contentToViewRect(contentBounds); 3573 Rect visibleRect = new Rect(); 3574 calcOurVisibleRect(visibleRect); 3575 // If the textfield is on screen, place the WebTextView in 3576 // its new place, accounting for our new scroll/zoom values, 3577 // and adjust its textsize. 3578 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3579 : visibleRect.contains(vBox)) { 3580 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3581 vBox.height()); 3582 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3583 contentToViewDimension( 3584 nativeFocusCandidateTextSize())); 3585 return true; 3586 } else { 3587 // The textfield is now off screen. The user probably 3588 // was not zooming to see the textfield better. Remove 3589 // the WebTextView. If the user types a key, and the 3590 // textfield is still in focus, we will reconstruct 3591 // the WebTextView and scroll it back on screen. 3592 mWebTextView.remove(); 3593 return false; 3594 } 3595 } 3596 3597 private void onZoomAnimationStart() { 3598 // If it is in password mode, turn it off so it does not draw misplaced. 3599 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3600 mWebTextView.setInPassword(false); 3601 } 3602 } 3603 3604 private void onZoomAnimationEnd() { 3605 // adjust the edit text view if needed 3606 if (inEditingMode() && didUpdateTextViewBounds(false) && nativeFocusCandidateIsPassword()) { 3607 // If it is a password field, start drawing the WebTextView once 3608 // again. 3609 mWebTextView.setInPassword(true); 3610 } 3611 } 3612 3613 void onFixedLengthZoomAnimationStart() { 3614 WebViewCore.pauseUpdatePicture(getWebViewCore()); 3615 onZoomAnimationStart(); 3616 } 3617 3618 void onFixedLengthZoomAnimationEnd() { 3619 WebViewCore.resumeUpdatePicture(mWebViewCore); 3620 onZoomAnimationEnd(); 3621 } 3622 3623 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 3624 Paint.DITHER_FLAG | 3625 Paint.SUBPIXEL_TEXT_FLAG; 3626 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 3627 Paint.DITHER_FLAG; 3628 3629 private final DrawFilter mZoomFilter = 3630 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 3631 // If we need to trade better quality for speed, set mScrollFilter to null 3632 private final DrawFilter mScrollFilter = 3633 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 3634 3635 private void drawCoreAndCursorRing(Canvas canvas, int color, 3636 boolean drawCursorRing) { 3637 if (mDrawHistory) { 3638 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3639 canvas.drawPicture(mHistoryPicture); 3640 return; 3641 } 3642 if (mNativeClass == 0) return; 3643 3644 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 3645 boolean animateScroll = ((!mScroller.isFinished() 3646 || mVelocityTracker != null) 3647 && (mTouchMode != TOUCH_DRAG_MODE || 3648 mHeldMotionless != MOTIONLESS_TRUE)) 3649 || mDeferTouchMode == TOUCH_DRAG_MODE; 3650 if (mTouchMode == TOUCH_DRAG_MODE) { 3651 if (mHeldMotionless == MOTIONLESS_PENDING) { 3652 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3653 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3654 mHeldMotionless = MOTIONLESS_FALSE; 3655 } 3656 if (mHeldMotionless == MOTIONLESS_FALSE) { 3657 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3658 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3659 mHeldMotionless = MOTIONLESS_PENDING; 3660 } 3661 } 3662 if (animateZoom) { 3663 mZoomManager.animateZoom(canvas); 3664 } else { 3665 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3666 } 3667 3668 boolean UIAnimationsRunning = false; 3669 // Currently for each draw we compute the animation values; 3670 // We may in the future decide to do that independently. 3671 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3672 UIAnimationsRunning = true; 3673 // If we have unfinished (or unstarted) animations, 3674 // we ask for a repaint. 3675 invalidate(); 3676 } 3677 3678 // decide which adornments to draw 3679 int extras = DRAW_EXTRAS_NONE; 3680 if (DebugFlags.WEB_VIEW) { 3681 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 3682 + " mSelectingText=" + mSelectingText 3683 + " nativePageShouldHandleShiftAndArrows()=" 3684 + nativePageShouldHandleShiftAndArrows() 3685 + " animateZoom=" + animateZoom); 3686 } 3687 if (mFindIsUp) { 3688 extras = DRAW_EXTRAS_FIND; 3689 } else if (mSelectingText) { 3690 extras = DRAW_EXTRAS_SELECTION; 3691 nativeSetSelectionPointer(mDrawSelectionPointer, 3692 mZoomManager.getInvScale(), 3693 mSelectX, mSelectY - getTitleHeight()); 3694 } else if (drawCursorRing) { 3695 extras = DRAW_EXTRAS_CURSOR_RING; 3696 } 3697 DrawFilter df = null; 3698 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 3699 df = mZoomFilter; 3700 } else if (animateScroll) { 3701 df = mScrollFilter; 3702 } 3703 canvas.setDrawFilter(df); 3704 int content = nativeDraw(canvas, color, extras, true); 3705 canvas.setDrawFilter(null); 3706 if (content != 0) { 3707 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 3708 } 3709 3710 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3711 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3712 mTouchMode = TOUCH_SHORTPRESS_MODE; 3713 } 3714 } 3715 if (mFocusSizeChanged) { 3716 mFocusSizeChanged = false; 3717 // If we are zooming, this will get handled above, when the zoom 3718 // finishes. We also do not need to do this unless the WebTextView 3719 // is showing. 3720 if (!animateZoom && inEditingMode()) { 3721 didUpdateTextViewBounds(true); 3722 } 3723 } 3724 } 3725 3726 // draw history 3727 private boolean mDrawHistory = false; 3728 private Picture mHistoryPicture = null; 3729 private int mHistoryWidth = 0; 3730 private int mHistoryHeight = 0; 3731 3732 // Only check the flag, can be called from WebCore thread 3733 boolean drawHistory() { 3734 return mDrawHistory; 3735 } 3736 3737 int getHistoryPictureWidth() { 3738 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 3739 } 3740 3741 // Should only be called in UI thread 3742 void switchOutDrawHistory() { 3743 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3744 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 3745 mDrawHistory = false; 3746 mHistoryPicture = null; 3747 invalidate(); 3748 int oldScrollX = mScrollX; 3749 int oldScrollY = mScrollY; 3750 mScrollX = pinLocX(mScrollX); 3751 mScrollY = pinLocY(mScrollY); 3752 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3753 mUserScroll = false; 3754 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3755 oldScrollY); 3756 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3757 } else { 3758 sendOurVisibleRect(); 3759 } 3760 } 3761 } 3762 3763 WebViewCore.CursorData cursorData() { 3764 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3765 result.mMoveGeneration = nativeMoveGeneration(); 3766 result.mFrame = nativeCursorFramePointer(); 3767 Point position = nativeCursorPosition(); 3768 result.mX = position.x; 3769 result.mY = position.y; 3770 return result; 3771 } 3772 3773 /** 3774 * Delete text from start to end in the focused textfield. If there is no 3775 * focus, or if start == end, silently fail. If start and end are out of 3776 * order, swap them. 3777 * @param start Beginning of selection to delete. 3778 * @param end End of selection to delete. 3779 */ 3780 /* package */ void deleteSelection(int start, int end) { 3781 mTextGeneration++; 3782 WebViewCore.TextSelectionData data 3783 = new WebViewCore.TextSelectionData(start, end); 3784 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3785 data); 3786 } 3787 3788 /** 3789 * Set the selection to (start, end) in the focused textfield. If start and 3790 * end are out of order, swap them. 3791 * @param start Beginning of selection. 3792 * @param end End of selection. 3793 */ 3794 /* package */ void setSelection(int start, int end) { 3795 if (mWebViewCore != null) { 3796 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3797 } 3798 } 3799 3800 @Override 3801 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3802 InputConnection connection = super.onCreateInputConnection(outAttrs); 3803 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3804 return connection; 3805 } 3806 3807 /** 3808 * Called in response to a message from webkit telling us that the soft 3809 * keyboard should be launched. 3810 */ 3811 private void displaySoftKeyboard(boolean isTextView) { 3812 InputMethodManager imm = (InputMethodManager) 3813 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3814 3815 // bring it back to the default level scale so that user can enter text 3816 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 3817 if (zoom) { 3818 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 3819 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 3820 } 3821 if (isTextView) { 3822 rebuildWebTextView(); 3823 if (inEditingMode()) { 3824 imm.showSoftInput(mWebTextView, 0); 3825 if (zoom) { 3826 didUpdateTextViewBounds(true); 3827 } 3828 return; 3829 } 3830 } 3831 // Used by plugins and contentEditable. 3832 // Also used if the navigation cache is out of date, and 3833 // does not recognize that a textfield is in focus. In that 3834 // case, use WebView as the targeted view. 3835 // see http://b/issue?id=2457459 3836 imm.showSoftInput(this, 0); 3837 } 3838 3839 // Called by WebKit to instruct the UI to hide the keyboard 3840 private void hideSoftKeyboard() { 3841 InputMethodManager imm = (InputMethodManager) 3842 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3843 if (imm.isActive(this) 3844 || (inEditingMode() && imm.isActive(mWebTextView))) { 3845 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3846 } 3847 } 3848 3849 /* 3850 * This method checks the current focus and cursor and potentially rebuilds 3851 * mWebTextView to have the appropriate properties, such as password, 3852 * multiline, and what text it contains. It also removes it if necessary. 3853 */ 3854 /* package */ void rebuildWebTextView() { 3855 // If the WebView does not have focus, do nothing until it gains focus. 3856 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3857 return; 3858 } 3859 boolean alreadyThere = inEditingMode(); 3860 // inEditingMode can only return true if mWebTextView is non-null, 3861 // so we can safely call remove() if (alreadyThere) 3862 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3863 if (alreadyThere) { 3864 mWebTextView.remove(); 3865 } 3866 return; 3867 } 3868 // At this point, we know we have found an input field, so go ahead 3869 // and create the WebTextView if necessary. 3870 if (mWebTextView == null) { 3871 mWebTextView = new WebTextView(mContext, WebView.this); 3872 // Initialize our generation number. 3873 mTextGeneration = 0; 3874 } 3875 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3876 contentToViewDimension(nativeFocusCandidateTextSize())); 3877 Rect visibleRect = new Rect(); 3878 calcOurContentVisibleRect(visibleRect); 3879 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3880 // should be in content coordinates. 3881 Rect bounds = nativeFocusCandidateNodeBounds(); 3882 Rect vBox = contentToViewRect(bounds); 3883 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3884 if (!Rect.intersects(bounds, visibleRect)) { 3885 mWebTextView.bringIntoView(); 3886 } 3887 String text = nativeFocusCandidateText(); 3888 int nodePointer = nativeFocusCandidatePointer(); 3889 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3890 // It is possible that we have the same textfield, but it has moved, 3891 // i.e. In the case of opening/closing the screen. 3892 // In that case, we need to set the dimensions, but not the other 3893 // aspects. 3894 // If the text has been changed by webkit, update it. However, if 3895 // there has been more UI text input, ignore it. We will receive 3896 // another update when that text is recognized. 3897 if (text != null && !text.equals(mWebTextView.getText().toString()) 3898 && nativeTextGeneration() == mTextGeneration) { 3899 mWebTextView.setTextAndKeepSelection(text); 3900 } 3901 } else { 3902 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3903 Gravity.RIGHT : Gravity.NO_GRAVITY); 3904 // This needs to be called before setType, which may call 3905 // requestFormData, and it needs to have the correct nodePointer. 3906 mWebTextView.setNodePointer(nodePointer); 3907 mWebTextView.setType(nativeFocusCandidateType()); 3908 if (null == text) { 3909 if (DebugFlags.WEB_VIEW) { 3910 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3911 } 3912 text = ""; 3913 } 3914 mWebTextView.setTextAndKeepSelection(text); 3915 InputMethodManager imm = InputMethodManager.peekInstance(); 3916 if (imm != null && imm.isActive(mWebTextView)) { 3917 imm.restartInput(mWebTextView); 3918 } 3919 } 3920 mWebTextView.requestFocus(); 3921 } 3922 3923 /** 3924 * Tell webkit to put the cursor on screen. 3925 */ 3926 /* package */ void revealSelection() { 3927 if (mWebViewCore != null) { 3928 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 3929 } 3930 } 3931 3932 /** 3933 * Called by WebTextView to find saved form data associated with the 3934 * textfield 3935 * @param name Name of the textfield. 3936 * @param nodePointer Pointer to the node of the textfield, so it can be 3937 * compared to the currently focused textfield when the data is 3938 * retrieved. 3939 */ 3940 /* package */ void requestFormData(String name, int nodePointer) { 3941 if (mWebViewCore.getSettings().getSaveFormData()) { 3942 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3943 update.arg1 = nodePointer; 3944 RequestFormData updater = new RequestFormData(name, getUrl(), 3945 update); 3946 Thread t = new Thread(updater); 3947 t.start(); 3948 } 3949 } 3950 3951 /** 3952 * Pass a message to find out the <label> associated with the <input> 3953 * identified by nodePointer 3954 * @param framePointer Pointer to the frame containing the <input> node 3955 * @param nodePointer Pointer to the node for which a <label> is desired. 3956 */ 3957 /* package */ void requestLabel(int framePointer, int nodePointer) { 3958 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3959 nodePointer); 3960 } 3961 3962 /* 3963 * This class requests an Adapter for the WebTextView which shows past 3964 * entries stored in the database. It is a Runnable so that it can be done 3965 * in its own thread, without slowing down the UI. 3966 */ 3967 private class RequestFormData implements Runnable { 3968 private String mName; 3969 private String mUrl; 3970 private Message mUpdateMessage; 3971 3972 public RequestFormData(String name, String url, Message msg) { 3973 mName = name; 3974 mUrl = url; 3975 mUpdateMessage = msg; 3976 } 3977 3978 public void run() { 3979 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3980 if (pastEntries.size() > 0) { 3981 AutoCompleteAdapter adapter = new 3982 AutoCompleteAdapter(mContext, pastEntries); 3983 mUpdateMessage.obj = adapter; 3984 mUpdateMessage.sendToTarget(); 3985 } 3986 } 3987 } 3988 3989 /** 3990 * Dump the display tree to "/sdcard/displayTree.txt" 3991 * 3992 * @hide debug only 3993 */ 3994 public void dumpDisplayTree() { 3995 nativeDumpDisplayTree(getUrl()); 3996 } 3997 3998 /** 3999 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4000 * "/sdcard/domTree.txt" 4001 * 4002 * @hide debug only 4003 */ 4004 public void dumpDomTree(boolean toFile) { 4005 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4006 } 4007 4008 /** 4009 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4010 * to "/sdcard/renderTree.txt" 4011 * 4012 * @hide debug only 4013 */ 4014 public void dumpRenderTree(boolean toFile) { 4015 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4016 } 4017 4018 /** 4019 * Called by DRT on UI thread, need to proxy to WebCore thread. 4020 * 4021 * @hide debug only 4022 */ 4023 public void useMockDeviceOrientation() { 4024 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4025 } 4026 4027 /** 4028 * Called by DRT on WebCore thread. 4029 * 4030 * @hide debug only 4031 */ 4032 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4033 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4034 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4035 canProvideGamma, gamma); 4036 } 4037 4038 /** 4039 * Dump the V8 counters to standard output. 4040 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4041 * true. Otherwise, this will do nothing. 4042 * 4043 * @hide debug only 4044 */ 4045 public void dumpV8Counters() { 4046 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4047 } 4048 4049 // This is used to determine long press with the center key. Does not 4050 // affect long press with the trackball/touch. 4051 private boolean mGotCenterDown = false; 4052 4053 @Override 4054 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4055 // send complex characters to webkit for use by JS and plugins 4056 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4057 // pass the key to DOM 4058 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4059 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4060 // return true as DOM handles the key 4061 return true; 4062 } 4063 return false; 4064 } 4065 4066 @Override 4067 public boolean onKeyDown(int keyCode, KeyEvent event) { 4068 if (DebugFlags.WEB_VIEW) { 4069 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4070 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4071 } 4072 4073 if (mNativeClass == 0) { 4074 return false; 4075 } 4076 4077 // do this hack up front, so it always works, regardless of touch-mode 4078 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4079 mAutoRedraw = !mAutoRedraw; 4080 if (mAutoRedraw) { 4081 invalidate(); 4082 } 4083 return true; 4084 } 4085 4086 // Bubble up the key event if 4087 // 1. it is a system key; or 4088 // 2. the host application wants to handle it; 4089 // 3. the accessibility injector is present and wants to handle it; 4090 if (event.isSystem() 4091 || mCallbackProxy.uiOverrideKeyEvent(event) 4092 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4093 return false; 4094 } 4095 4096 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4097 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4098 if (pageShouldHandleShiftAndArrows()) { 4099 mShiftIsPressed = true; 4100 } else if (!nativeCursorWantsKeyEvents() && !mSelectingText) { 4101 setUpSelect(); 4102 } 4103 } 4104 4105 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4106 pageUp(false); 4107 return true; 4108 } 4109 4110 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4111 pageDown(false); 4112 return true; 4113 } 4114 4115 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4116 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4117 switchOutDrawHistory(); 4118 if (pageShouldHandleShiftAndArrows()) { 4119 letPageHandleNavKey(keyCode, event.getEventTime(), true); 4120 return true; 4121 } 4122 if (mSelectingText) { 4123 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4124 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4125 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4126 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4127 int multiplier = event.getRepeatCount() + 1; 4128 moveSelection(xRate * multiplier, yRate * multiplier); 4129 return true; 4130 } 4131 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4132 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4133 return true; 4134 } 4135 // Bubble up the key event as WebView doesn't handle it 4136 return false; 4137 } 4138 4139 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4140 switchOutDrawHistory(); 4141 if (event.getRepeatCount() == 0) { 4142 if (mSelectingText) { 4143 return true; // discard press if copy in progress 4144 } 4145 mGotCenterDown = true; 4146 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4147 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4148 // Already checked mNativeClass, so we do not need to check it 4149 // again. 4150 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4151 return true; 4152 } 4153 // Bubble up the key event as WebView doesn't handle it 4154 return false; 4155 } 4156 4157 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 4158 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 4159 // turn off copy select if a shift-key combo is pressed 4160 selectionDone(); 4161 mShiftIsPressed = false; 4162 } 4163 4164 if (getSettings().getNavDump()) { 4165 switch (keyCode) { 4166 case KeyEvent.KEYCODE_4: 4167 dumpDisplayTree(); 4168 break; 4169 case KeyEvent.KEYCODE_5: 4170 case KeyEvent.KEYCODE_6: 4171 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4172 break; 4173 case KeyEvent.KEYCODE_7: 4174 case KeyEvent.KEYCODE_8: 4175 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4176 break; 4177 case KeyEvent.KEYCODE_9: 4178 nativeInstrumentReport(); 4179 return true; 4180 } 4181 } 4182 4183 if (nativeCursorIsTextInput()) { 4184 // This message will put the node in focus, for the DOM's notion 4185 // of focus, and make the focuscontroller active 4186 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 4187 nativeCursorNodePointer()); 4188 // This will bring up the WebTextView and put it in focus, for 4189 // our view system's notion of focus 4190 rebuildWebTextView(); 4191 // Now we need to pass the event to it 4192 if (inEditingMode()) { 4193 mWebTextView.setDefaultSelection(); 4194 return mWebTextView.dispatchKeyEvent(event); 4195 } 4196 } else if (nativeHasFocusNode()) { 4197 // In this case, the cursor is not on a text input, but the focus 4198 // might be. Check it, and if so, hand over to the WebTextView. 4199 rebuildWebTextView(); 4200 if (inEditingMode()) { 4201 mWebTextView.setDefaultSelection(); 4202 return mWebTextView.dispatchKeyEvent(event); 4203 } 4204 } 4205 4206 // TODO: should we pass all the keys to DOM or check the meta tag 4207 if (nativeCursorWantsKeyEvents() || true) { 4208 // pass the key to DOM 4209 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4210 // return true as DOM handles the key 4211 return true; 4212 } 4213 4214 // Bubble up the key event as WebView doesn't handle it 4215 return false; 4216 } 4217 4218 @Override 4219 public boolean onKeyUp(int keyCode, KeyEvent event) { 4220 if (DebugFlags.WEB_VIEW) { 4221 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4222 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4223 } 4224 4225 if (mNativeClass == 0) { 4226 return false; 4227 } 4228 4229 // special CALL handling when cursor node's href is "tel:XXX" 4230 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4231 String text = nativeCursorText(); 4232 if (!nativeCursorIsTextInput() && text != null 4233 && text.startsWith(SCHEME_TEL)) { 4234 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4235 getContext().startActivity(intent); 4236 return true; 4237 } 4238 } 4239 4240 // Bubble up the key event if 4241 // 1. it is a system key; or 4242 // 2. the host application wants to handle it; 4243 // 3. the accessibility injector is present and wants to handle it; 4244 if (event.isSystem() 4245 || mCallbackProxy.uiOverrideKeyEvent(event) 4246 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4247 return false; 4248 } 4249 4250 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4251 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4252 if (pageShouldHandleShiftAndArrows()) { 4253 mShiftIsPressed = false; 4254 } else if (copySelection()) { 4255 selectionDone(); 4256 return true; 4257 } 4258 } 4259 4260 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4261 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4262 if (pageShouldHandleShiftAndArrows()) { 4263 letPageHandleNavKey(keyCode, event.getEventTime(), false); 4264 return true; 4265 } 4266 // always handle the navigation keys in the UI thread 4267 // Bubble up the key event as WebView doesn't handle it 4268 return false; 4269 } 4270 4271 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4272 // remove the long press message first 4273 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4274 mGotCenterDown = false; 4275 4276 if (mSelectingText) { 4277 if (mExtendSelection) { 4278 copySelection(); 4279 selectionDone(); 4280 } else { 4281 mExtendSelection = true; 4282 nativeSetExtendSelection(); 4283 invalidate(); // draw the i-beam instead of the arrow 4284 } 4285 return true; // discard press if copy in progress 4286 } 4287 4288 // perform the single click 4289 Rect visibleRect = sendOurVisibleRect(); 4290 // Note that sendOurVisibleRect calls viewToContent, so the 4291 // coordinates should be in content coordinates. 4292 if (!nativeCursorIntersects(visibleRect)) { 4293 return false; 4294 } 4295 WebViewCore.CursorData data = cursorData(); 4296 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4297 playSoundEffect(SoundEffectConstants.CLICK); 4298 if (nativeCursorIsTextInput()) { 4299 rebuildWebTextView(); 4300 centerKeyPressOnTextField(); 4301 if (inEditingMode()) { 4302 mWebTextView.setDefaultSelection(); 4303 } 4304 return true; 4305 } 4306 clearTextEntry(); 4307 nativeShowCursorTimed(); 4308 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4309 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4310 nativeCursorNodePointer()); 4311 } 4312 return true; 4313 } 4314 4315 // TODO: should we pass all the keys to DOM or check the meta tag 4316 if (nativeCursorWantsKeyEvents() || true) { 4317 // pass the key to DOM 4318 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4319 // return true as DOM handles the key 4320 return true; 4321 } 4322 4323 // Bubble up the key event as WebView doesn't handle it 4324 return false; 4325 } 4326 4327 private void setUpSelect() { 4328 if (0 == mNativeClass) return; // client isn't initialized 4329 if (inFullScreenMode()) return; 4330 if (mSelectingText) return; 4331 mExtendSelection = false; 4332 mSelectingText = mDrawSelectionPointer = true; 4333 // don't let the picture change during text selection 4334 WebViewCore.pauseUpdatePicture(mWebViewCore); 4335 nativeResetSelection(); 4336 if (nativeHasCursorNode()) { 4337 Rect rect = nativeCursorNodeBounds(); 4338 mSelectX = contentToViewX(rect.left); 4339 mSelectY = contentToViewY(rect.top); 4340 } else if (mLastTouchY > getVisibleTitleHeight()) { 4341 mSelectX = mScrollX + (int) mLastTouchX; 4342 mSelectY = mScrollY + (int) mLastTouchY; 4343 } else { 4344 mSelectX = mScrollX + getViewWidth() / 2; 4345 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4346 } 4347 nativeHideCursor(); 4348 mSelectCallback = new SelectActionModeCallback(); 4349 mSelectCallback.setWebView(this); 4350 View titleBar = mTitleBar; 4351 // We do not want to show the embedded title bar during find or 4352 // select, but keep track of it so that it can be replaced when the 4353 // mode is exited. 4354 setEmbeddedTitleBar(null); 4355 mSelectCallback.setTitleBar(titleBar); 4356 startActionMode(mSelectCallback); 4357 } 4358 4359 /** 4360 * Use this method to put the WebView into text selection mode. 4361 * Do not rely on this functionality; it will be deprecated in the future. 4362 */ 4363 public void emulateShiftHeld() { 4364 setUpSelect(); 4365 } 4366 4367 /** 4368 * Select all of the text in this WebView. 4369 */ 4370 void selectAll() { 4371 if (0 == mNativeClass) return; // client isn't initialized 4372 if (inFullScreenMode()) return; 4373 if (!mSelectingText) setUpSelect(); 4374 nativeSelectAll(); 4375 mDrawSelectionPointer = false; 4376 mExtendSelection = true; 4377 invalidate(); 4378 } 4379 4380 /** 4381 * Called when the selection has been removed. 4382 */ 4383 void selectionDone() { 4384 if (mSelectingText) { 4385 mSelectingText = false; 4386 // finish is idempotent, so this is fine even if selectionDone was 4387 // called by mSelectCallback.onDestroyActionMode 4388 mSelectCallback.finish(); 4389 mSelectCallback = null; 4390 WebViewCore.resumeUpdatePicture(mWebViewCore); 4391 invalidate(); // redraw without selection 4392 } 4393 } 4394 4395 /** 4396 * Copy the selection to the clipboard 4397 */ 4398 boolean copySelection() { 4399 boolean copiedSomething = false; 4400 String selection = getSelection(); 4401 if (selection != "") { 4402 if (DebugFlags.WEB_VIEW) { 4403 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4404 } 4405 Toast.makeText(mContext 4406 , com.android.internal.R.string.text_copied 4407 , Toast.LENGTH_SHORT).show(); 4408 copiedSomething = true; 4409 ClipboardManager cm = (ClipboardManager)getContext() 4410 .getSystemService(Context.CLIPBOARD_SERVICE); 4411 cm.setText(selection); 4412 } 4413 invalidate(); // remove selection region and pointer 4414 return copiedSomething; 4415 } 4416 4417 /** 4418 * Returns the currently highlighted text as a string. 4419 */ 4420 String getSelection() { 4421 if (mNativeClass == 0) return ""; 4422 return nativeGetSelection(); 4423 } 4424 4425 @Override 4426 protected void onAttachedToWindow() { 4427 super.onAttachedToWindow(); 4428 if (hasWindowFocus()) setActive(true); 4429 } 4430 4431 @Override 4432 protected void onDetachedFromWindow() { 4433 clearHelpers(); 4434 mZoomManager.dismissZoomPicker(); 4435 if (hasWindowFocus()) setActive(false); 4436 super.onDetachedFromWindow(); 4437 } 4438 4439 @Override 4440 protected void onVisibilityChanged(View changedView, int visibility) { 4441 super.onVisibilityChanged(changedView, visibility); 4442 // The zoomManager may be null if the webview is created from XML that 4443 // specifies the view's visibility param as not visible (see http://b/2794841) 4444 if (visibility != View.VISIBLE && mZoomManager != null) { 4445 mZoomManager.dismissZoomPicker(); 4446 } 4447 } 4448 4449 /** 4450 * @deprecated WebView no longer needs to implement 4451 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4452 */ 4453 @Deprecated 4454 public void onChildViewAdded(View parent, View child) {} 4455 4456 /** 4457 * @deprecated WebView no longer needs to implement 4458 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4459 */ 4460 @Deprecated 4461 public void onChildViewRemoved(View p, View child) {} 4462 4463 /** 4464 * @deprecated WebView should not have implemented 4465 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4466 * does nothing now. 4467 */ 4468 @Deprecated 4469 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4470 } 4471 4472 private void setActive(boolean active) { 4473 if (active) { 4474 if (hasFocus()) { 4475 // If our window regained focus, and we have focus, then begin 4476 // drawing the cursor ring 4477 mDrawCursorRing = true; 4478 setFocusControllerActive(true); 4479 if (mNativeClass != 0) { 4480 nativeRecordButtons(true, false, true); 4481 } 4482 } else { 4483 if (!inEditingMode()) { 4484 // If our window gained focus, but we do not have it, do not 4485 // draw the cursor ring. 4486 mDrawCursorRing = false; 4487 setFocusControllerActive(false); 4488 } 4489 // We do not call nativeRecordButtons here because we assume 4490 // that when we lost focus, or window focus, it got called with 4491 // false for the first parameter 4492 } 4493 } else { 4494 if (!mZoomManager.isZoomPickerVisible()) { 4495 /* 4496 * The external zoom controls come in their own window, so our 4497 * window loses focus. Our policy is to not draw the cursor ring 4498 * if our window is not focused, but this is an exception since 4499 * the user can still navigate the web page with the zoom 4500 * controls showing. 4501 */ 4502 mDrawCursorRing = false; 4503 } 4504 mGotKeyDown = false; 4505 mShiftIsPressed = false; 4506 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4507 mTouchMode = TOUCH_DONE_MODE; 4508 if (mNativeClass != 0) { 4509 nativeRecordButtons(false, false, true); 4510 } 4511 setFocusControllerActive(false); 4512 } 4513 invalidate(); 4514 } 4515 4516 // To avoid drawing the cursor ring, and remove the TextView when our window 4517 // loses focus. 4518 @Override 4519 public void onWindowFocusChanged(boolean hasWindowFocus) { 4520 setActive(hasWindowFocus); 4521 if (hasWindowFocus) { 4522 JWebCoreJavaBridge.setActiveWebView(this); 4523 } else { 4524 JWebCoreJavaBridge.removeActiveWebView(this); 4525 } 4526 super.onWindowFocusChanged(hasWindowFocus); 4527 } 4528 4529 /* 4530 * Pass a message to WebCore Thread, telling the WebCore::Page's 4531 * FocusController to be "inactive" so that it will 4532 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4533 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4534 */ 4535 /* package */ void setFocusControllerActive(boolean active) { 4536 if (mWebViewCore == null) return; 4537 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 4538 } 4539 4540 @Override 4541 protected void onFocusChanged(boolean focused, int direction, 4542 Rect previouslyFocusedRect) { 4543 if (DebugFlags.WEB_VIEW) { 4544 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4545 } 4546 if (focused) { 4547 // When we regain focus, if we have window focus, resume drawing 4548 // the cursor ring 4549 if (hasWindowFocus()) { 4550 mDrawCursorRing = true; 4551 if (mNativeClass != 0) { 4552 nativeRecordButtons(true, false, true); 4553 } 4554 setFocusControllerActive(true); 4555 //} else { 4556 // The WebView has gained focus while we do not have 4557 // windowfocus. When our window lost focus, we should have 4558 // called nativeRecordButtons(false...) 4559 } 4560 } else { 4561 // When we lost focus, unless focus went to the TextView (which is 4562 // true if we are in editing mode), stop drawing the cursor ring. 4563 if (!inEditingMode()) { 4564 mDrawCursorRing = false; 4565 if (mNativeClass != 0) { 4566 nativeRecordButtons(false, false, true); 4567 } 4568 setFocusControllerActive(false); 4569 } 4570 mGotKeyDown = false; 4571 } 4572 4573 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4574 } 4575 4576 /** 4577 * @hide 4578 */ 4579 @Override 4580 protected boolean setFrame(int left, int top, int right, int bottom) { 4581 boolean changed = super.setFrame(left, top, right, bottom); 4582 if (!changed && mHeightCanMeasure) { 4583 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4584 // in WebViewCore after we get the first layout. We do call 4585 // requestLayout() when we get contentSizeChanged(). But the View 4586 // system won't call onSizeChanged if the dimension is not changed. 4587 // In this case, we need to call sendViewSizeZoom() explicitly to 4588 // notify the WebKit about the new dimensions. 4589 sendViewSizeZoom(false); 4590 } 4591 return changed; 4592 } 4593 4594 @Override 4595 protected void onSizeChanged(int w, int h, int ow, int oh) { 4596 super.onSizeChanged(w, h, ow, oh); 4597 4598 // adjust the max viewport width depending on the view dimensions. This 4599 // is to ensure the scaling is not going insane. So do not shrink it if 4600 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4601 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 4602 if (newMaxViewportWidth > sMaxViewportWidth) { 4603 sMaxViewportWidth = newMaxViewportWidth; 4604 } 4605 4606 mZoomManager.onSizeChanged(w, h, ow, oh); 4607 } 4608 4609 @Override 4610 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4611 super.onScrollChanged(l, t, oldl, oldt); 4612 sendOurVisibleRect(); 4613 // update WebKit if visible title bar height changed. The logic is same 4614 // as getVisibleTitleHeight. 4615 int titleHeight = getTitleHeight(); 4616 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4617 sendViewSizeZoom(false); 4618 } 4619 } 4620 4621 @Override 4622 public boolean dispatchKeyEvent(KeyEvent event) { 4623 boolean dispatch = true; 4624 4625 // Textfields, plugins, and contentEditable nodes need to receive the 4626 // shift up key even if another key was released while the shift key 4627 // was held down. 4628 if (!inEditingMode() && (mNativeClass == 0 4629 || !nativePageShouldHandleShiftAndArrows())) { 4630 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4631 mGotKeyDown = true; 4632 } else { 4633 if (!mGotKeyDown) { 4634 /* 4635 * We got a key up for which we were not the recipient of 4636 * the original key down. Don't give it to the view. 4637 */ 4638 dispatch = false; 4639 } 4640 mGotKeyDown = false; 4641 } 4642 } 4643 4644 if (dispatch) { 4645 return super.dispatchKeyEvent(event); 4646 } else { 4647 // We didn't dispatch, so let something else handle the key 4648 return false; 4649 } 4650 } 4651 4652 // Here are the snap align logic: 4653 // 1. If it starts nearly horizontally or vertically, snap align; 4654 // 2. If there is a dramitic direction change, let it go; 4655 // 3. If there is a same direction back and forth, lock it. 4656 4657 // adjustable parameters 4658 private int mMinLockSnapReverseDistance; 4659 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4660 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4661 4662 private static int sign(float x) { 4663 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4664 } 4665 4666 // if the page can scroll <= this value, we won't allow the drag tracker 4667 // to have any effect. 4668 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4669 4670 private class DragTrackerHandler { 4671 private final DragTracker mProxy; 4672 private final float mStartY, mStartX; 4673 private final float mMinDY, mMinDX; 4674 private final float mMaxDY, mMaxDX; 4675 private float mCurrStretchY, mCurrStretchX; 4676 private int mSX, mSY; 4677 private Interpolator mInterp; 4678 private float[] mXY = new float[2]; 4679 4680 // inner (non-state) classes can't have enums :( 4681 private static final int DRAGGING_STATE = 0; 4682 private static final int ANIMATING_STATE = 1; 4683 private static final int FINISHED_STATE = 2; 4684 private int mState; 4685 4686 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4687 mProxy = proxy; 4688 4689 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4690 int viewTop = getScrollY(); 4691 int viewBottom = viewTop + getHeight(); 4692 4693 mStartY = y; 4694 mMinDY = -viewTop; 4695 mMaxDY = docBottom - viewBottom; 4696 4697 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4698 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4699 " up/down= " + mMinDY + " " + mMaxDY); 4700 } 4701 4702 int docRight = computeHorizontalScrollRange(); 4703 int viewLeft = getScrollX(); 4704 int viewRight = viewLeft + getWidth(); 4705 mStartX = x; 4706 mMinDX = -viewLeft; 4707 mMaxDX = docRight - viewRight; 4708 4709 mState = DRAGGING_STATE; 4710 mProxy.onStartDrag(x, y); 4711 4712 // ensure we buildBitmap at least once 4713 mSX = -99999; 4714 } 4715 4716 private float computeStretch(float delta, float min, float max) { 4717 float stretch = 0; 4718 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4719 if (delta < min) { 4720 stretch = delta - min; 4721 } else if (delta > max) { 4722 stretch = delta - max; 4723 } 4724 } 4725 return stretch; 4726 } 4727 4728 public void dragTo(float x, float y) { 4729 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4730 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4731 4732 if ((mSnapScrollMode & SNAP_X) != 0) { 4733 sy = 0; 4734 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4735 sx = 0; 4736 } 4737 4738 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4739 mCurrStretchX = sx; 4740 mCurrStretchY = sy; 4741 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4742 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4743 " " + sy); 4744 } 4745 if (mProxy.onStretchChange(sx, sy)) { 4746 invalidate(); 4747 } 4748 } 4749 } 4750 4751 public void stopDrag() { 4752 final int DURATION = 200; 4753 int now = (int)SystemClock.uptimeMillis(); 4754 mInterp = new Interpolator(2); 4755 mXY[0] = mCurrStretchX; 4756 mXY[1] = mCurrStretchY; 4757 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4758 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4759 mInterp.setKeyFrame(0, now, mXY, blend); 4760 float[] zerozero = new float[] { 0, 0 }; 4761 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4762 mState = ANIMATING_STATE; 4763 4764 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4765 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4766 } 4767 } 4768 4769 // Call this after each draw. If it ruturns null, the tracker is done 4770 public boolean isFinished() { 4771 return mState == FINISHED_STATE; 4772 } 4773 4774 private int hiddenHeightOfTitleBar() { 4775 return getTitleHeight() - getVisibleTitleHeight(); 4776 } 4777 4778 // need a way to know if 565 or 8888 is the right config for 4779 // capturing the display and giving it to the drag proxy 4780 private Bitmap.Config offscreenBitmapConfig() { 4781 // hard code 565 for now 4782 return Bitmap.Config.RGB_565; 4783 } 4784 4785 /* If the tracker draws, then this returns true, otherwise it will 4786 return false, and draw nothing. 4787 */ 4788 public boolean draw(Canvas canvas) { 4789 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4790 int sx = getScrollX(); 4791 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4792 if (mSX != sx || mSY != sy) { 4793 buildBitmap(sx, sy); 4794 mSX = sx; 4795 mSY = sy; 4796 } 4797 4798 if (mState == ANIMATING_STATE) { 4799 Interpolator.Result result = mInterp.timeToValues(mXY); 4800 if (result == Interpolator.Result.FREEZE_END) { 4801 mState = FINISHED_STATE; 4802 return false; 4803 } else { 4804 mProxy.onStretchChange(mXY[0], mXY[1]); 4805 invalidate(); 4806 // fall through to the draw 4807 } 4808 } 4809 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4810 canvas.translate(sx, sy); 4811 mProxy.onDraw(canvas); 4812 canvas.restoreToCount(count); 4813 return true; 4814 } 4815 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4816 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4817 mCurrStretchX + " " + mCurrStretchY); 4818 } 4819 return false; 4820 } 4821 4822 private void buildBitmap(int sx, int sy) { 4823 int w = getWidth(); 4824 int h = getViewHeight(); 4825 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4826 Canvas canvas = new Canvas(bm); 4827 canvas.translate(-sx, -sy); 4828 drawContent(canvas); 4829 4830 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4831 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4832 " " + sy + " " + w + " " + h); 4833 } 4834 mProxy.onBitmapChange(bm); 4835 } 4836 } 4837 4838 /** @hide */ 4839 public static class DragTracker { 4840 public void onStartDrag(float x, float y) {} 4841 public boolean onStretchChange(float sx, float sy) { 4842 // return true to have us inval the view 4843 return false; 4844 } 4845 public void onStopDrag() {} 4846 public void onBitmapChange(Bitmap bm) {} 4847 public void onDraw(Canvas canvas) {} 4848 } 4849 4850 /** @hide */ 4851 public DragTracker getDragTracker() { 4852 return mDragTracker; 4853 } 4854 4855 /** @hide */ 4856 public void setDragTracker(DragTracker tracker) { 4857 mDragTracker = tracker; 4858 } 4859 4860 private DragTracker mDragTracker; 4861 private DragTrackerHandler mDragTrackerHandler; 4862 4863 private boolean hitFocusedPlugin(int contentX, int contentY) { 4864 if (DebugFlags.WEB_VIEW) { 4865 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4866 Rect r = nativeFocusNodeBounds(); 4867 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4868 + ", " + r.right + ", " + r.bottom + ")"); 4869 } 4870 return nativeFocusIsPlugin() 4871 && nativeFocusNodeBounds().contains(contentX, contentY); 4872 } 4873 4874 private boolean shouldForwardTouchEvent() { 4875 return mFullScreenHolder != null || (mForwardTouchEvents 4876 && !mSelectingText 4877 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4878 } 4879 4880 private boolean inFullScreenMode() { 4881 return mFullScreenHolder != null; 4882 } 4883 4884 void onPinchToZoomAnimationStart() { 4885 // cancel the single touch handling 4886 cancelTouch(); 4887 onZoomAnimationStart(); 4888 } 4889 4890 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 4891 onZoomAnimationEnd(); 4892 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 4893 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 4894 // as it may trigger the unwanted fling. 4895 mTouchMode = TOUCH_PINCH_DRAG; 4896 mConfirmMove = true; 4897 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 4898 } 4899 4900 private void startScrollingLayer(float gestureX, float gestureY) { 4901 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4902 int contentX = viewToContentX((int) gestureX + mScrollX); 4903 int contentY = viewToContentY((int) gestureY + mScrollY); 4904 mScrollingLayer = nativeScrollableLayer(contentX, contentY); 4905 if (mScrollingLayer != 0) { 4906 mTouchMode = TOUCH_DRAG_LAYER_MODE; 4907 } 4908 } 4909 } 4910 4911 // 1/(density * density) used to compute the distance between points. 4912 // Computed in init(). 4913 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 4914 4915 // The distance between two points reported in onTouchEvent scaled by the 4916 // density of the screen. 4917 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 4918 4919 @Override 4920 public boolean onTouchEvent(MotionEvent ev) { 4921 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4922 return false; 4923 } 4924 4925 if (DebugFlags.WEB_VIEW) { 4926 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4927 + mTouchMode); 4928 } 4929 4930 int action = ev.getAction(); 4931 float x = ev.getX(); 4932 float y = ev.getY(); 4933 long eventTime = ev.getEventTime(); 4934 4935 final ScaleGestureDetector detector = 4936 mZoomManager.getMultiTouchGestureDetector(); 4937 boolean skipScaleGesture = false; 4938 // Set to the mid-point of a two-finger gesture used to detect if the 4939 // user has touched a layer. 4940 float gestureX = x; 4941 float gestureY = y; 4942 if (detector == null || !detector.isInProgress()) { 4943 // The gesture for scrolling a layer is two fingers close together. 4944 // FIXME: we may consider giving WebKit an option to handle 4945 // multi-touch events later. 4946 if (ev.getPointerCount() > 1) { 4947 float dx = ev.getX(1) - ev.getX(0); 4948 float dy = ev.getY(1) - ev.getY(0); 4949 float dist = (dx * dx + dy * dy) * 4950 DRAG_LAYER_INVERSE_DENSITY_SQUARED; 4951 // Use the approximate center to determine if the gesture is in 4952 // a layer. 4953 gestureX = ev.getX(0) + (dx * .5f); 4954 gestureY = ev.getY(0) + (dy * .5f); 4955 // Now use a consistent point for tracking movement. 4956 if (ev.getX(0) < ev.getX(1)) { 4957 x = ev.getX(0); 4958 y = ev.getY(0); 4959 } else { 4960 x = ev.getX(1); 4961 y = ev.getY(1); 4962 } 4963 action = ev.getActionMasked(); 4964 if (dist < DRAG_LAYER_FINGER_DISTANCE) { 4965 skipScaleGesture = true; 4966 } else if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 4967 // Fingers moved too far apart while dragging, the user 4968 // might be trying to zoom. 4969 mTouchMode = TOUCH_INIT_MODE; 4970 } 4971 } 4972 } 4973 4974 // FIXME: we may consider to give WebKit an option to handle multi-touch 4975 // events later. 4976 if (mZoomManager.supportsMultiTouchZoom() && ev.getPointerCount() > 1 && 4977 mTouchMode != TOUCH_DRAG_LAYER_MODE && !skipScaleGesture) { 4978 4979 // if the page disallows zoom, skip multi-pointer action 4980 if (!mZoomManager.supportsPanDuringZoom() && mZoomManager.isZoomScaleFixed()) { 4981 return true; 4982 } 4983 4984 if (!detector.isInProgress() && 4985 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 4986 // Insert a fake pointer down event in order to start 4987 // the zoom scale detector. 4988 MotionEvent temp = MotionEvent.obtain(ev); 4989 // Clear the original event and set it to 4990 // ACTION_POINTER_DOWN. 4991 try { 4992 temp.setAction(temp.getAction() & 4993 ~MotionEvent.ACTION_MASK | 4994 MotionEvent.ACTION_POINTER_DOWN); 4995 detector.onTouchEvent(temp); 4996 } finally { 4997 temp.recycle(); 4998 } 4999 } 5000 5001 detector.onTouchEvent(ev); 5002 5003 if (detector.isInProgress()) { 5004 mLastTouchTime = eventTime; 5005 cancelLongPress(); 5006 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5007 if (!mZoomManager.supportsPanDuringZoom()) { 5008 return true; 5009 } 5010 mTouchMode = TOUCH_DRAG_MODE; 5011 if (mVelocityTracker == null) { 5012 mVelocityTracker = VelocityTracker.obtain(); 5013 } 5014 } 5015 5016 x = detector.getFocusX(); 5017 y = detector.getFocusY(); 5018 action = ev.getAction() & MotionEvent.ACTION_MASK; 5019 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5020 cancelTouch(); 5021 action = MotionEvent.ACTION_DOWN; 5022 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5023 // set mLastTouchX/Y to the remaining point 5024 mLastTouchX = x; 5025 mLastTouchY = y; 5026 } else if (action == MotionEvent.ACTION_MOVE) { 5027 // negative x or y indicate it is on the edge, skip it. 5028 if (x < 0 || y < 0) { 5029 return true; 5030 } 5031 } 5032 } 5033 5034 // Due to the touch screen edge effect, a touch closer to the edge 5035 // always snapped to the edge. As getViewWidth() can be different from 5036 // getWidth() due to the scrollbar, adjusting the point to match 5037 // getViewWidth(). Same applied to the height. 5038 x = Math.min(x, getViewWidth() - 1); 5039 y = Math.min(y, getViewHeightWithTitle() - 1); 5040 5041 float fDeltaX = mLastTouchX - x; 5042 float fDeltaY = mLastTouchY - y; 5043 int deltaX = (int) fDeltaX; 5044 int deltaY = (int) fDeltaY; 5045 int contentX = viewToContentX((int) x + mScrollX); 5046 int contentY = viewToContentY((int) y + mScrollY); 5047 5048 switch (action) { 5049 case MotionEvent.ACTION_DOWN: { 5050 mPreventDefault = PREVENT_DEFAULT_NO; 5051 mConfirmMove = false; 5052 if (!mScroller.isFinished()) { 5053 // stop the current scroll animation, but if this is 5054 // the start of a fling, allow it to add to the current 5055 // fling's velocity 5056 mScroller.abortAnimation(); 5057 mTouchMode = TOUCH_DRAG_START_MODE; 5058 mConfirmMove = true; 5059 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5060 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5061 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5062 if (getSettings().supportTouchOnly()) { 5063 removeTouchHighlight(true); 5064 } 5065 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5066 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5067 } else { 5068 // commit the short press action for the previous tap 5069 doShortPress(); 5070 mTouchMode = TOUCH_INIT_MODE; 5071 mDeferTouchProcess = (!inFullScreenMode() 5072 && mForwardTouchEvents) ? hitFocusedPlugin( 5073 contentX, contentY) : false; 5074 } 5075 } else { // the normal case 5076 mTouchMode = TOUCH_INIT_MODE; 5077 mDeferTouchProcess = (!inFullScreenMode() 5078 && mForwardTouchEvents) ? hitFocusedPlugin( 5079 contentX, contentY) : false; 5080 mWebViewCore.sendMessage( 5081 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5082 if (getSettings().supportTouchOnly()) { 5083 TouchHighlightData data = new TouchHighlightData(); 5084 data.mX = contentX; 5085 data.mY = contentY; 5086 data.mSlop = viewToContentDimension(mNavSlop); 5087 mWebViewCore.sendMessageDelayed( 5088 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5089 ViewConfiguration.getTapTimeout()); 5090 if (DEBUG_TOUCH_HIGHLIGHT) { 5091 if (getSettings().getNavDump()) { 5092 mTouchHighlightX = (int) x + mScrollX; 5093 mTouchHighlightY = (int) y + mScrollY; 5094 mPrivateHandler.postDelayed(new Runnable() { 5095 public void run() { 5096 mTouchHighlightX = mTouchHighlightY = 0; 5097 invalidate(); 5098 } 5099 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5100 } 5101 } 5102 } 5103 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5104 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5105 (eventTime - mLastTouchUpTime), eventTime); 5106 } 5107 if (mSelectingText) { 5108 mDrawSelectionPointer = false; 5109 mSelectionStarted = nativeStartSelection(contentX, contentY); 5110 if (DebugFlags.WEB_VIEW) { 5111 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5112 } 5113 invalidate(); 5114 } 5115 } 5116 // Trigger the link 5117 if (mTouchMode == TOUCH_INIT_MODE 5118 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5119 mPrivateHandler.sendEmptyMessageDelayed( 5120 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5121 mPrivateHandler.sendEmptyMessageDelayed( 5122 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5123 if (inFullScreenMode() || mDeferTouchProcess) { 5124 mPreventDefault = PREVENT_DEFAULT_YES; 5125 } else if (mForwardTouchEvents) { 5126 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5127 } else { 5128 mPreventDefault = PREVENT_DEFAULT_NO; 5129 } 5130 // pass the touch events from UI thread to WebCore thread 5131 if (shouldForwardTouchEvent()) { 5132 TouchEventData ted = new TouchEventData(); 5133 ted.mAction = action; 5134 ted.mX = contentX; 5135 ted.mY = contentY; 5136 ted.mMetaState = ev.getMetaState(); 5137 ted.mReprocess = mDeferTouchProcess; 5138 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5139 if (mDeferTouchProcess) { 5140 // still needs to set them for compute deltaX/Y 5141 mLastTouchX = x; 5142 mLastTouchY = y; 5143 break; 5144 } 5145 if (!inFullScreenMode()) { 5146 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5147 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5148 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5149 action, 0), TAP_TIMEOUT); 5150 } 5151 } 5152 } 5153 startTouch(x, y, eventTime); 5154 break; 5155 } 5156 case MotionEvent.ACTION_MOVE: { 5157 boolean firstMove = false; 5158 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5159 >= mTouchSlopSquare) { 5160 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5161 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5162 mConfirmMove = true; 5163 firstMove = true; 5164 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5165 mTouchMode = TOUCH_INIT_MODE; 5166 } 5167 if (getSettings().supportTouchOnly()) { 5168 removeTouchHighlight(true); 5169 } 5170 } 5171 // pass the touch events from UI thread to WebCore thread 5172 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5173 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5174 TouchEventData ted = new TouchEventData(); 5175 ted.mAction = action; 5176 ted.mX = contentX; 5177 ted.mY = contentY; 5178 ted.mMetaState = ev.getMetaState(); 5179 ted.mReprocess = mDeferTouchProcess; 5180 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5181 mLastSentTouchTime = eventTime; 5182 if (mDeferTouchProcess) { 5183 break; 5184 } 5185 if (firstMove && !inFullScreenMode()) { 5186 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5187 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5188 action, 0), TAP_TIMEOUT); 5189 } 5190 } 5191 if (mTouchMode == TOUCH_DONE_MODE 5192 || mPreventDefault == PREVENT_DEFAULT_YES) { 5193 // no dragging during scroll zoom animation, or when prevent 5194 // default is yes 5195 break; 5196 } 5197 if (mVelocityTracker == null) { 5198 Log.e(LOGTAG, "Got null mVelocityTracker when " 5199 + "mPreventDefault = " + mPreventDefault 5200 + " mDeferTouchProcess = " + mDeferTouchProcess 5201 + " mTouchMode = " + mTouchMode); 5202 } 5203 mVelocityTracker.addMovement(ev); 5204 if (mSelectingText && mSelectionStarted) { 5205 if (DebugFlags.WEB_VIEW) { 5206 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5207 } 5208 nativeExtendSelection(contentX, contentY); 5209 invalidate(); 5210 break; 5211 } 5212 5213 if (mTouchMode != TOUCH_DRAG_MODE && 5214 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5215 5216 if (!mConfirmMove) { 5217 break; 5218 } 5219 5220 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5221 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5222 // track mLastTouchTime as we may need to do fling at 5223 // ACTION_UP 5224 mLastTouchTime = eventTime; 5225 break; 5226 } 5227 5228 // Only lock dragging to one axis if we don't have a scale in progress. 5229 // Scaling implies free-roaming movement. Note this is only ever a question 5230 // if mZoomManager.supportsPanDuringZoom() is true. 5231 if (detector != null && !detector.isInProgress()) { 5232 // if it starts nearly horizontal or vertical, enforce it 5233 int ax = Math.abs(deltaX); 5234 int ay = Math.abs(deltaY); 5235 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5236 mSnapScrollMode = SNAP_X; 5237 mSnapPositive = deltaX > 0; 5238 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5239 mSnapScrollMode = SNAP_Y; 5240 mSnapPositive = deltaY > 0; 5241 } 5242 } 5243 5244 mTouchMode = TOUCH_DRAG_MODE; 5245 mLastTouchX = x; 5246 mLastTouchY = y; 5247 fDeltaX = 0.0f; 5248 fDeltaY = 0.0f; 5249 deltaX = 0; 5250 deltaY = 0; 5251 5252 if (skipScaleGesture) { 5253 startScrollingLayer(gestureX, gestureY); 5254 } 5255 startDrag(); 5256 } 5257 5258 if (mDragTrackerHandler != null) { 5259 mDragTrackerHandler.dragTo(x, y); 5260 } 5261 5262 // do pan 5263 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5264 int newScrollX = pinLocX(mScrollX + deltaX); 5265 int newDeltaX = newScrollX - mScrollX; 5266 if (deltaX != newDeltaX) { 5267 deltaX = newDeltaX; 5268 fDeltaX = (float) newDeltaX; 5269 } 5270 int newScrollY = pinLocY(mScrollY + deltaY); 5271 int newDeltaY = newScrollY - mScrollY; 5272 if (deltaY != newDeltaY) { 5273 deltaY = newDeltaY; 5274 fDeltaY = (float) newDeltaY; 5275 } 5276 } 5277 boolean done = false; 5278 boolean keepScrollBarsVisible = false; 5279 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5280 mLastTouchX = x; 5281 mLastTouchY = y; 5282 keepScrollBarsVisible = done = true; 5283 } else { 5284 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5285 int ax = Math.abs(deltaX); 5286 int ay = Math.abs(deltaY); 5287 if (mSnapScrollMode == SNAP_X) { 5288 // radical change means getting out of snap mode 5289 if (ay > MAX_SLOPE_FOR_DIAG * ax 5290 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5291 mSnapScrollMode = SNAP_NONE; 5292 } 5293 // reverse direction means lock in the snap mode 5294 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5295 (mSnapPositive 5296 ? deltaX < -mMinLockSnapReverseDistance 5297 : deltaX > mMinLockSnapReverseDistance)) { 5298 mSnapScrollMode |= SNAP_LOCK; 5299 } 5300 } else { 5301 // radical change means getting out of snap mode 5302 if (ax > MAX_SLOPE_FOR_DIAG * ay 5303 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5304 mSnapScrollMode = SNAP_NONE; 5305 } 5306 // reverse direction means lock in the snap mode 5307 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5308 (mSnapPositive 5309 ? deltaY < -mMinLockSnapReverseDistance 5310 : deltaY > mMinLockSnapReverseDistance)) { 5311 mSnapScrollMode |= SNAP_LOCK; 5312 } 5313 } 5314 } 5315 if (mSnapScrollMode != SNAP_NONE) { 5316 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5317 deltaY = 0; 5318 } else { 5319 deltaX = 0; 5320 } 5321 } 5322 if ((deltaX | deltaY) != 0) { 5323 if (deltaX != 0) { 5324 mLastTouchX = x; 5325 } 5326 if (deltaY != 0) { 5327 mLastTouchY = y; 5328 } 5329 mHeldMotionless = MOTIONLESS_FALSE; 5330 } else { 5331 // keep the scrollbar on the screen even there is no 5332 // scroll 5333 mLastTouchX = x; 5334 mLastTouchY = y; 5335 keepScrollBarsVisible = true; 5336 } 5337 mLastTouchTime = eventTime; 5338 mUserScroll = true; 5339 } 5340 5341 doDrag(deltaX, deltaY); 5342 5343 // Turn off scrollbars when dragging a layer. 5344 if (keepScrollBarsVisible && 5345 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5346 if (mHeldMotionless != MOTIONLESS_TRUE) { 5347 mHeldMotionless = MOTIONLESS_TRUE; 5348 invalidate(); 5349 } 5350 // keep the scrollbar on the screen even there is no scroll 5351 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5352 false); 5353 // return false to indicate that we can't pan out of the 5354 // view space 5355 return !done; 5356 } 5357 break; 5358 } 5359 case MotionEvent.ACTION_UP: { 5360 if (!isFocused()) requestFocus(); 5361 // pass the touch events from UI thread to WebCore thread 5362 if (shouldForwardTouchEvent()) { 5363 TouchEventData ted = new TouchEventData(); 5364 ted.mAction = action; 5365 ted.mX = contentX; 5366 ted.mY = contentY; 5367 ted.mMetaState = ev.getMetaState(); 5368 ted.mReprocess = mDeferTouchProcess; 5369 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5370 } 5371 mLastTouchUpTime = eventTime; 5372 switch (mTouchMode) { 5373 case TOUCH_DOUBLE_TAP_MODE: // double tap 5374 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5375 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5376 if (inFullScreenMode() || mDeferTouchProcess) { 5377 TouchEventData ted = new TouchEventData(); 5378 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5379 ted.mX = contentX; 5380 ted.mY = contentY; 5381 ted.mMetaState = ev.getMetaState(); 5382 ted.mReprocess = mDeferTouchProcess; 5383 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5384 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5385 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5386 mTouchMode = TOUCH_DONE_MODE; 5387 } 5388 break; 5389 case TOUCH_INIT_MODE: // tap 5390 case TOUCH_SHORTPRESS_START_MODE: 5391 case TOUCH_SHORTPRESS_MODE: 5392 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5393 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5394 if (mConfirmMove) { 5395 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5396 " WebCore's response for touch down."); 5397 if (mPreventDefault != PREVENT_DEFAULT_YES 5398 && (computeMaxScrollX() > 0 5399 || computeMaxScrollY() > 0)) { 5400 // If the user has performed a very quick touch 5401 // sequence it is possible that we may get here 5402 // before WebCore has had a chance to process the events. 5403 // In this case, any call to preventDefault in the 5404 // JS touch handler will not have been executed yet. 5405 // Hence we will see both the UI (now) and WebCore 5406 // (when context switches) handling the event, 5407 // regardless of whether the web developer actually 5408 // doeses preventDefault in their touch handler. This 5409 // is the nature of our asynchronous touch model. 5410 5411 // we will not rewrite drag code here, but we 5412 // will try fling if it applies. 5413 WebViewCore.reducePriority(); 5414 // to get better performance, pause updating the 5415 // picture 5416 WebViewCore.pauseUpdatePicture(mWebViewCore); 5417 // fall through to TOUCH_DRAG_MODE 5418 } else { 5419 // WebKit may consume the touch event and modify 5420 // DOM. drawContentPicture() will be called with 5421 // animateSroll as true for better performance. 5422 // Force redraw in high-quality. 5423 invalidate(); 5424 break; 5425 } 5426 } else { 5427 if (mSelectingText) { 5428 // tapping on selection or controls does nothing 5429 if (!nativeHitSelection(contentX, contentY)) { 5430 selectionDone(); 5431 } 5432 break; 5433 } 5434 // only trigger double tap if the WebView is 5435 // scalable 5436 if (mTouchMode == TOUCH_INIT_MODE 5437 && (canZoomIn() || canZoomOut())) { 5438 mPrivateHandler.sendEmptyMessageDelayed( 5439 RELEASE_SINGLE_TAP, ViewConfiguration 5440 .getDoubleTapTimeout()); 5441 } else { 5442 doShortPress(); 5443 } 5444 break; 5445 } 5446 case TOUCH_DRAG_MODE: 5447 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5448 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5449 // if the user waits a while w/o moving before the 5450 // up, we don't want to do a fling 5451 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5452 if (mVelocityTracker == null) { 5453 Log.e(LOGTAG, "Got null mVelocityTracker when " 5454 + "mPreventDefault = " 5455 + mPreventDefault 5456 + " mDeferTouchProcess = " 5457 + mDeferTouchProcess); 5458 } 5459 mVelocityTracker.addMovement(ev); 5460 // set to MOTIONLESS_IGNORE so that it won't keep 5461 // removing and sending message in 5462 // drawCoreAndCursorRing() 5463 mHeldMotionless = MOTIONLESS_IGNORE; 5464 doFling(); 5465 break; 5466 } 5467 // redraw in high-quality, as we're done dragging 5468 mHeldMotionless = MOTIONLESS_TRUE; 5469 invalidate(); 5470 // fall through 5471 case TOUCH_DRAG_START_MODE: 5472 case TOUCH_DRAG_LAYER_MODE: 5473 // TOUCH_DRAG_START_MODE should not happen for the real 5474 // device as we almost certain will get a MOVE. But this 5475 // is possible on emulator. 5476 mLastVelocity = 0; 5477 WebViewCore.resumePriority(); 5478 WebViewCore.resumeUpdatePicture(mWebViewCore); 5479 break; 5480 } 5481 stopTouch(); 5482 break; 5483 } 5484 case MotionEvent.ACTION_CANCEL: { 5485 if (mTouchMode == TOUCH_DRAG_MODE) { 5486 invalidate(); 5487 } 5488 cancelWebCoreTouchEvent(contentX, contentY, false); 5489 cancelTouch(); 5490 break; 5491 } 5492 } 5493 return true; 5494 } 5495 5496 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5497 if (shouldForwardTouchEvent()) { 5498 if (removeEvents) { 5499 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5500 } 5501 TouchEventData ted = new TouchEventData(); 5502 ted.mX = x; 5503 ted.mY = y; 5504 ted.mAction = MotionEvent.ACTION_CANCEL; 5505 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5506 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5507 } 5508 } 5509 5510 private void startTouch(float x, float y, long eventTime) { 5511 // Remember where the motion event started 5512 mLastTouchX = x; 5513 mLastTouchY = y; 5514 mLastTouchTime = eventTime; 5515 mVelocityTracker = VelocityTracker.obtain(); 5516 mSnapScrollMode = SNAP_NONE; 5517 if (mDragTracker != null) { 5518 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5519 } 5520 } 5521 5522 private void startDrag() { 5523 WebViewCore.reducePriority(); 5524 // to get better performance, pause updating the picture 5525 WebViewCore.pauseUpdatePicture(mWebViewCore); 5526 if (!mDragFromTextInput) { 5527 nativeHideCursor(); 5528 } 5529 5530 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5531 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 5532 mZoomManager.invokeZoomPicker(); 5533 } 5534 } 5535 5536 private void doDrag(int deltaX, int deltaY) { 5537 if ((deltaX | deltaY) != 0) { 5538 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5539 deltaX = viewToContentDimension(deltaX); 5540 deltaY = viewToContentDimension(deltaY); 5541 if (nativeScrollLayer(mScrollingLayer, deltaX, deltaY)) { 5542 invalidate(); 5543 } 5544 return; 5545 } 5546 scrollBy(deltaX, deltaY); 5547 } 5548 mZoomManager.keepZoomPickerVisible(); 5549 } 5550 5551 private void stopTouch() { 5552 if (mDragTrackerHandler != null) { 5553 mDragTrackerHandler.stopDrag(); 5554 } 5555 // we also use mVelocityTracker == null to tell us that we are 5556 // not "moving around", so we can take the slower/prettier 5557 // mode in the drawing code 5558 if (mVelocityTracker != null) { 5559 mVelocityTracker.recycle(); 5560 mVelocityTracker = null; 5561 } 5562 } 5563 5564 private void cancelTouch() { 5565 if (mDragTrackerHandler != null) { 5566 mDragTrackerHandler.stopDrag(); 5567 } 5568 // we also use mVelocityTracker == null to tell us that we are 5569 // not "moving around", so we can take the slower/prettier 5570 // mode in the drawing code 5571 if (mVelocityTracker != null) { 5572 mVelocityTracker.recycle(); 5573 mVelocityTracker = null; 5574 } 5575 if (mTouchMode == TOUCH_DRAG_MODE || 5576 mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5577 WebViewCore.resumePriority(); 5578 WebViewCore.resumeUpdatePicture(mWebViewCore); 5579 } 5580 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5581 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5582 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5583 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5584 if (getSettings().supportTouchOnly()) { 5585 removeTouchHighlight(true); 5586 } 5587 mHeldMotionless = MOTIONLESS_TRUE; 5588 mTouchMode = TOUCH_DONE_MODE; 5589 nativeHideCursor(); 5590 } 5591 5592 private long mTrackballFirstTime = 0; 5593 private long mTrackballLastTime = 0; 5594 private float mTrackballRemainsX = 0.0f; 5595 private float mTrackballRemainsY = 0.0f; 5596 private int mTrackballXMove = 0; 5597 private int mTrackballYMove = 0; 5598 private boolean mSelectingText = false; 5599 private boolean mSelectionStarted = false; 5600 private boolean mExtendSelection = false; 5601 private boolean mDrawSelectionPointer = false; 5602 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5603 private static final int TRACKBALL_TIMEOUT = 200; 5604 private static final int TRACKBALL_WAIT = 100; 5605 private static final int TRACKBALL_SCALE = 400; 5606 private static final int TRACKBALL_SCROLL_COUNT = 5; 5607 private static final int TRACKBALL_MOVE_COUNT = 10; 5608 private static final int TRACKBALL_MULTIPLIER = 3; 5609 private static final int SELECT_CURSOR_OFFSET = 16; 5610 private int mSelectX = 0; 5611 private int mSelectY = 0; 5612 private boolean mFocusSizeChanged = false; 5613 private boolean mShiftIsPressed = false; 5614 private boolean mTrackballDown = false; 5615 private long mTrackballUpTime = 0; 5616 private long mLastCursorTime = 0; 5617 private Rect mLastCursorBounds; 5618 5619 // Set by default; BrowserActivity clears to interpret trackball data 5620 // directly for movement. Currently, the framework only passes 5621 // arrow key events, not trackball events, from one child to the next 5622 private boolean mMapTrackballToArrowKeys = true; 5623 5624 public void setMapTrackballToArrowKeys(boolean setMap) { 5625 mMapTrackballToArrowKeys = setMap; 5626 } 5627 5628 void resetTrackballTime() { 5629 mTrackballLastTime = 0; 5630 } 5631 5632 @Override 5633 public boolean onTrackballEvent(MotionEvent ev) { 5634 long time = ev.getEventTime(); 5635 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5636 if (ev.getY() > 0) pageDown(true); 5637 if (ev.getY() < 0) pageUp(true); 5638 return true; 5639 } 5640 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5641 if (mSelectingText) { 5642 return true; // discard press if copy in progress 5643 } 5644 mTrackballDown = true; 5645 if (mNativeClass == 0) { 5646 return false; 5647 } 5648 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5649 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5650 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5651 nativeSelectBestAt(mLastCursorBounds); 5652 } 5653 if (DebugFlags.WEB_VIEW) { 5654 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5655 + " time=" + time 5656 + " mLastCursorTime=" + mLastCursorTime); 5657 } 5658 if (isInTouchMode()) requestFocusFromTouch(); 5659 return false; // let common code in onKeyDown at it 5660 } 5661 if (ev.getAction() == MotionEvent.ACTION_UP) { 5662 // LONG_PRESS_CENTER is set in common onKeyDown 5663 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5664 mTrackballDown = false; 5665 mTrackballUpTime = time; 5666 if (mSelectingText) { 5667 if (mExtendSelection) { 5668 copySelection(); 5669 selectionDone(); 5670 } else { 5671 mExtendSelection = true; 5672 nativeSetExtendSelection(); 5673 invalidate(); // draw the i-beam instead of the arrow 5674 } 5675 return true; // discard press if copy in progress 5676 } 5677 if (DebugFlags.WEB_VIEW) { 5678 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5679 + " time=" + time 5680 ); 5681 } 5682 return false; // let common code in onKeyUp at it 5683 } 5684 if ((mMapTrackballToArrowKeys && mShiftIsPressed == false) || 5685 (mAccessibilityInjector != null || mAccessibilityScriptInjected)) { 5686 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5687 return false; 5688 } 5689 if (mTrackballDown) { 5690 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5691 return true; // discard move if trackball is down 5692 } 5693 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5694 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5695 return true; 5696 } 5697 // TODO: alternatively we can do panning as touch does 5698 switchOutDrawHistory(); 5699 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5700 if (DebugFlags.WEB_VIEW) { 5701 Log.v(LOGTAG, "onTrackballEvent time=" 5702 + time + " last=" + mTrackballLastTime); 5703 } 5704 mTrackballFirstTime = time; 5705 mTrackballXMove = mTrackballYMove = 0; 5706 } 5707 mTrackballLastTime = time; 5708 if (DebugFlags.WEB_VIEW) { 5709 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5710 } 5711 mTrackballRemainsX += ev.getX(); 5712 mTrackballRemainsY += ev.getY(); 5713 doTrackball(time); 5714 return true; 5715 } 5716 5717 void moveSelection(float xRate, float yRate) { 5718 if (mNativeClass == 0) 5719 return; 5720 int width = getViewWidth(); 5721 int height = getViewHeight(); 5722 mSelectX += xRate; 5723 mSelectY += yRate; 5724 int maxX = width + mScrollX; 5725 int maxY = height + mScrollY; 5726 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5727 , mSelectX)); 5728 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5729 , mSelectY)); 5730 if (DebugFlags.WEB_VIEW) { 5731 Log.v(LOGTAG, "moveSelection" 5732 + " mSelectX=" + mSelectX 5733 + " mSelectY=" + mSelectY 5734 + " mScrollX=" + mScrollX 5735 + " mScrollY=" + mScrollY 5736 + " xRate=" + xRate 5737 + " yRate=" + yRate 5738 ); 5739 } 5740 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5741 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5742 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5743 : 0; 5744 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5745 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5746 : 0; 5747 pinScrollBy(scrollX, scrollY, true, 0); 5748 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5749 requestRectangleOnScreen(select); 5750 invalidate(); 5751 } 5752 5753 private int scaleTrackballX(float xRate, int width) { 5754 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5755 int nextXMove = xMove; 5756 if (xMove > 0) { 5757 if (xMove > mTrackballXMove) { 5758 xMove -= mTrackballXMove; 5759 } 5760 } else if (xMove < mTrackballXMove) { 5761 xMove -= mTrackballXMove; 5762 } 5763 mTrackballXMove = nextXMove; 5764 return xMove; 5765 } 5766 5767 private int scaleTrackballY(float yRate, int height) { 5768 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5769 int nextYMove = yMove; 5770 if (yMove > 0) { 5771 if (yMove > mTrackballYMove) { 5772 yMove -= mTrackballYMove; 5773 } 5774 } else if (yMove < mTrackballYMove) { 5775 yMove -= mTrackballYMove; 5776 } 5777 mTrackballYMove = nextYMove; 5778 return yMove; 5779 } 5780 5781 private int keyCodeToSoundsEffect(int keyCode) { 5782 switch(keyCode) { 5783 case KeyEvent.KEYCODE_DPAD_UP: 5784 return SoundEffectConstants.NAVIGATION_UP; 5785 case KeyEvent.KEYCODE_DPAD_RIGHT: 5786 return SoundEffectConstants.NAVIGATION_RIGHT; 5787 case KeyEvent.KEYCODE_DPAD_DOWN: 5788 return SoundEffectConstants.NAVIGATION_DOWN; 5789 case KeyEvent.KEYCODE_DPAD_LEFT: 5790 return SoundEffectConstants.NAVIGATION_LEFT; 5791 } 5792 throw new IllegalArgumentException("keyCode must be one of " + 5793 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5794 "KEYCODE_DPAD_LEFT}."); 5795 } 5796 5797 private void doTrackball(long time) { 5798 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5799 if (elapsed == 0) { 5800 elapsed = TRACKBALL_TIMEOUT; 5801 } 5802 float xRate = mTrackballRemainsX * 1000 / elapsed; 5803 float yRate = mTrackballRemainsY * 1000 / elapsed; 5804 int viewWidth = getViewWidth(); 5805 int viewHeight = getViewHeight(); 5806 if (mSelectingText) { 5807 if (!mDrawSelectionPointer) { 5808 // The last selection was made by touch, disabling drawing the 5809 // selection pointer. Allow the trackball to adjust the 5810 // position of the touch control. 5811 mSelectX = contentToViewX(nativeSelectionX()); 5812 mSelectY = contentToViewY(nativeSelectionY()); 5813 mDrawSelectionPointer = mExtendSelection = true; 5814 nativeSetExtendSelection(); 5815 } 5816 moveSelection(scaleTrackballX(xRate, viewWidth), 5817 scaleTrackballY(yRate, viewHeight)); 5818 mTrackballRemainsX = mTrackballRemainsY = 0; 5819 return; 5820 } 5821 float ax = Math.abs(xRate); 5822 float ay = Math.abs(yRate); 5823 float maxA = Math.max(ax, ay); 5824 if (DebugFlags.WEB_VIEW) { 5825 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5826 + " xRate=" + xRate 5827 + " yRate=" + yRate 5828 + " mTrackballRemainsX=" + mTrackballRemainsX 5829 + " mTrackballRemainsY=" + mTrackballRemainsY); 5830 } 5831 int width = mContentWidth - viewWidth; 5832 int height = mContentHeight - viewHeight; 5833 if (width < 0) width = 0; 5834 if (height < 0) height = 0; 5835 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5836 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5837 maxA = Math.max(ax, ay); 5838 int count = Math.max(0, (int) maxA); 5839 int oldScrollX = mScrollX; 5840 int oldScrollY = mScrollY; 5841 if (count > 0) { 5842 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5843 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5844 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5845 KeyEvent.KEYCODE_DPAD_RIGHT; 5846 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5847 if (DebugFlags.WEB_VIEW) { 5848 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5849 + " count=" + count 5850 + " mTrackballRemainsX=" + mTrackballRemainsX 5851 + " mTrackballRemainsY=" + mTrackballRemainsY); 5852 } 5853 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 5854 for (int i = 0; i < count; i++) { 5855 letPageHandleNavKey(selectKeyCode, time, true); 5856 } 5857 letPageHandleNavKey(selectKeyCode, time, false); 5858 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5859 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5860 } 5861 mTrackballRemainsX = mTrackballRemainsY = 0; 5862 } 5863 if (count >= TRACKBALL_SCROLL_COUNT) { 5864 int xMove = scaleTrackballX(xRate, width); 5865 int yMove = scaleTrackballY(yRate, height); 5866 if (DebugFlags.WEB_VIEW) { 5867 Log.v(LOGTAG, "doTrackball pinScrollBy" 5868 + " count=" + count 5869 + " xMove=" + xMove + " yMove=" + yMove 5870 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5871 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5872 ); 5873 } 5874 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5875 xMove = 0; 5876 } 5877 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5878 yMove = 0; 5879 } 5880 if (xMove != 0 || yMove != 0) { 5881 pinScrollBy(xMove, yMove, true, 0); 5882 } 5883 mUserScroll = true; 5884 } 5885 } 5886 5887 private int computeMaxScrollX() { 5888 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5889 } 5890 5891 private int computeMaxScrollY() { 5892 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5893 - getViewHeightWithTitle(), 0); 5894 } 5895 5896 boolean updateScrollCoordinates(int x, int y) { 5897 int oldX = mScrollX; 5898 int oldY = mScrollY; 5899 mScrollX = x; 5900 mScrollY = y; 5901 if (oldX != mScrollX || oldY != mScrollY) { 5902 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 5903 return true; 5904 } else { 5905 return false; 5906 } 5907 } 5908 5909 public void flingScroll(int vx, int vy) { 5910 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5911 computeMaxScrollY()); 5912 invalidate(); 5913 } 5914 5915 private void doFling() { 5916 if (mVelocityTracker == null) { 5917 return; 5918 } 5919 int maxX = computeMaxScrollX(); 5920 int maxY = computeMaxScrollY(); 5921 5922 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5923 int vx = (int) mVelocityTracker.getXVelocity(); 5924 int vy = (int) mVelocityTracker.getYVelocity(); 5925 5926 if (mSnapScrollMode != SNAP_NONE) { 5927 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5928 vy = 0; 5929 } else { 5930 vx = 0; 5931 } 5932 } 5933 if (true /* EMG release: make our fling more like Maps' */) { 5934 // maps cuts their velocity in half 5935 vx = vx * 3 / 4; 5936 vy = vy * 3 / 4; 5937 } 5938 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5939 WebViewCore.resumePriority(); 5940 WebViewCore.resumeUpdatePicture(mWebViewCore); 5941 return; 5942 } 5943 float currentVelocity = mScroller.getCurrVelocity(); 5944 float velocity = (float) Math.hypot(vx, vy); 5945 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 5946 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 5947 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5948 - Math.atan2(vy, vx))); 5949 final float circle = (float) (Math.PI) * 2.0f; 5950 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5951 vx += currentVelocity * mLastVelX / mLastVelocity; 5952 vy += currentVelocity * mLastVelY / mLastVelocity; 5953 velocity = (float) Math.hypot(vx, vy); 5954 if (DebugFlags.WEB_VIEW) { 5955 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5956 } 5957 } else if (DebugFlags.WEB_VIEW) { 5958 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5959 } 5960 } else if (DebugFlags.WEB_VIEW) { 5961 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5962 + " current=" + currentVelocity 5963 + " vx=" + vx + " vy=" + vy 5964 + " maxX=" + maxX + " maxY=" + maxY 5965 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5966 } 5967 mLastVelX = vx; 5968 mLastVelY = vy; 5969 mLastVelocity = velocity; 5970 5971 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5972 final int time = mScroller.getDuration(); 5973 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5974 awakenScrollBars(time); 5975 invalidate(); 5976 } 5977 5978 /** 5979 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5980 * in charge of installing this view to the view hierarchy. This view will 5981 * become visible when the user starts scrolling via touch and fade away if 5982 * the user does not interact with it. 5983 * <p/> 5984 * API version 3 introduces a built-in zoom mechanism that is shown 5985 * automatically by the MapView. This is the preferred approach for 5986 * showing the zoom UI. 5987 * 5988 * @deprecated The built-in zoom mechanism is preferred, see 5989 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5990 */ 5991 @Deprecated 5992 public View getZoomControls() { 5993 if (!getSettings().supportZoom()) { 5994 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5995 return null; 5996 } 5997 return mZoomManager.getExternalZoomPicker(); 5998 } 5999 6000 void dismissZoomControl() { 6001 mZoomManager.dismissZoomPicker(); 6002 } 6003 6004 float getDefaultZoomScale() { 6005 return mZoomManager.getDefaultScale(); 6006 } 6007 6008 /** 6009 * @return TRUE if the WebView can be zoomed in. 6010 */ 6011 public boolean canZoomIn() { 6012 return mZoomManager.canZoomIn(); 6013 } 6014 6015 /** 6016 * @return TRUE if the WebView can be zoomed out. 6017 */ 6018 public boolean canZoomOut() { 6019 return mZoomManager.canZoomOut(); 6020 } 6021 6022 /** 6023 * Perform zoom in in the webview 6024 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6025 */ 6026 public boolean zoomIn() { 6027 return mZoomManager.zoomIn(); 6028 } 6029 6030 /** 6031 * Perform zoom out in the webview 6032 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6033 */ 6034 public boolean zoomOut() { 6035 return mZoomManager.zoomOut(); 6036 } 6037 6038 private void updateSelection() { 6039 if (mNativeClass == 0) { 6040 return; 6041 } 6042 // mLastTouchX and mLastTouchY are the point in the current viewport 6043 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6044 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6045 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6046 contentX + mNavSlop, contentY + mNavSlop); 6047 nativeSelectBestAt(rect); 6048 } 6049 6050 /** 6051 * Scroll the focused text field/area to match the WebTextView 6052 * @param xPercent New x position of the WebTextView from 0 to 1. 6053 * @param y New y position of the WebTextView in view coordinates 6054 */ 6055 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 6056 if (!inEditingMode() || mWebViewCore == null) { 6057 return; 6058 } 6059 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 6060 // Since this position is relative to the top of the text input 6061 // field, we do not need to take the title bar's height into 6062 // consideration. 6063 viewToContentDimension(y), 6064 new Float(xPercent)); 6065 } 6066 6067 /** 6068 * Set our starting point and time for a drag from the WebTextView. 6069 */ 6070 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6071 if (!inEditingMode()) { 6072 return; 6073 } 6074 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 6075 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 6076 mLastTouchTime = eventTime; 6077 if (!mScroller.isFinished()) { 6078 abortAnimation(); 6079 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6080 } 6081 mSnapScrollMode = SNAP_NONE; 6082 mVelocityTracker = VelocityTracker.obtain(); 6083 mTouchMode = TOUCH_DRAG_START_MODE; 6084 } 6085 6086 /** 6087 * Given a motion event from the WebTextView, set its location to our 6088 * coordinates, and handle the event. 6089 */ 6090 /*package*/ boolean textFieldDrag(MotionEvent event) { 6091 if (!inEditingMode()) { 6092 return false; 6093 } 6094 mDragFromTextInput = true; 6095 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6096 (float) (mWebTextView.getTop() - mScrollY)); 6097 boolean result = onTouchEvent(event); 6098 mDragFromTextInput = false; 6099 return result; 6100 } 6101 6102 /** 6103 * Due a touch up from a WebTextView. This will be handled by webkit to 6104 * change the selection. 6105 * @param event MotionEvent in the WebTextView's coordinates. 6106 */ 6107 /*package*/ void touchUpOnTextField(MotionEvent event) { 6108 if (!inEditingMode()) { 6109 return; 6110 } 6111 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6112 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6113 nativeMotionUp(x, y, mNavSlop); 6114 } 6115 6116 /** 6117 * Called when pressing the center key or trackball on a textfield. 6118 */ 6119 /*package*/ void centerKeyPressOnTextField() { 6120 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6121 nativeCursorNodePointer()); 6122 } 6123 6124 private void doShortPress() { 6125 if (mNativeClass == 0) { 6126 return; 6127 } 6128 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6129 return; 6130 } 6131 mTouchMode = TOUCH_DONE_MODE; 6132 switchOutDrawHistory(); 6133 // mLastTouchX and mLastTouchY are the point in the current viewport 6134 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6135 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6136 if (getSettings().supportTouchOnly()) { 6137 removeTouchHighlight(false); 6138 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6139 // use "0" as generation id to inform WebKit to use the same x/y as 6140 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6141 touchUpData.mMoveGeneration = 0; 6142 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6143 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6144 WebViewCore.MotionUpData motionUpData = new WebViewCore 6145 .MotionUpData(); 6146 motionUpData.mFrame = nativeCacheHitFramePointer(); 6147 motionUpData.mNode = nativeCacheHitNodePointer(); 6148 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6149 motionUpData.mX = contentX; 6150 motionUpData.mY = contentY; 6151 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6152 motionUpData); 6153 } else { 6154 doMotionUp(contentX, contentY); 6155 } 6156 } 6157 6158 private void doMotionUp(int contentX, int contentY) { 6159 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 6160 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6161 } 6162 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6163 playSoundEffect(SoundEffectConstants.CLICK); 6164 } 6165 } 6166 6167 /* 6168 * Return true if the view (Plugin) is fully visible and maximized inside 6169 * the WebView. 6170 */ 6171 boolean isPluginFitOnScreen(ViewManager.ChildView view) { 6172 final int viewWidth = getViewWidth(); 6173 final int viewHeight = getViewHeightWithTitle(); 6174 float scale = Math.min((float) viewWidth / view.width, (float) viewHeight / view.height); 6175 scale = mZoomManager.computeScaleWithLimits(scale); 6176 return !mZoomManager.willScaleTriggerZoom(scale) 6177 && contentToViewX(view.x) >= mScrollX 6178 && contentToViewX(view.x + view.width) <= mScrollX + viewWidth 6179 && contentToViewY(view.y) >= mScrollY 6180 && contentToViewY(view.y + view.height) <= mScrollY + viewHeight; 6181 } 6182 6183 /* 6184 * Maximize and center the rectangle, specified in the document coordinate 6185 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6186 * animated scroll to center it. If the zoom needs to be changed, find the 6187 * zoom center and do a smooth zoom transition. 6188 */ 6189 void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 6190 int viewWidth = getViewWidth(); 6191 int viewHeight = getViewHeightWithTitle(); 6192 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 6193 / docHeight); 6194 scale = mZoomManager.computeScaleWithLimits(scale); 6195 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6196 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 6197 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 6198 true, 0); 6199 } else { 6200 float actualScale = mZoomManager.getScale(); 6201 float oldScreenX = docX * actualScale - mScrollX; 6202 float rectViewX = docX * scale; 6203 float rectViewWidth = docWidth * scale; 6204 float newMaxWidth = mContentWidth * scale; 6205 float newScreenX = (viewWidth - rectViewWidth) / 2; 6206 // pin the newX to the WebView 6207 if (newScreenX > rectViewX) { 6208 newScreenX = rectViewX; 6209 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6210 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6211 } 6212 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6213 / (scale - actualScale); 6214 float oldScreenY = docY * actualScale + getTitleHeight() 6215 - mScrollY; 6216 float rectViewY = docY * scale + getTitleHeight(); 6217 float rectViewHeight = docHeight * scale; 6218 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6219 float newScreenY = (viewHeight - rectViewHeight) / 2; 6220 // pin the newY to the WebView 6221 if (newScreenY > rectViewY) { 6222 newScreenY = rectViewY; 6223 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6224 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6225 } 6226 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6227 / (scale - actualScale); 6228 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6229 mZoomManager.startZoomAnimation(scale, false); 6230 } 6231 } 6232 6233 // Called by JNI to handle a touch on a node representing an email address, 6234 // address, or phone number 6235 private void overrideLoading(String url) { 6236 mCallbackProxy.uiOverrideUrlLoading(url); 6237 } 6238 6239 @Override 6240 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6241 // FIXME: If a subwindow is showing find, and the user touches the 6242 // background window, it can steal focus. 6243 if (mFindIsUp) return false; 6244 boolean result = false; 6245 if (inEditingMode()) { 6246 result = mWebTextView.requestFocus(direction, 6247 previouslyFocusedRect); 6248 } else { 6249 result = super.requestFocus(direction, previouslyFocusedRect); 6250 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6251 // For cases such as GMail, where we gain focus from a direction, 6252 // we want to move to the first available link. 6253 // FIXME: If there are no visible links, we may not want to 6254 int fakeKeyDirection = 0; 6255 switch(direction) { 6256 case View.FOCUS_UP: 6257 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6258 break; 6259 case View.FOCUS_DOWN: 6260 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6261 break; 6262 case View.FOCUS_LEFT: 6263 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6264 break; 6265 case View.FOCUS_RIGHT: 6266 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6267 break; 6268 default: 6269 return result; 6270 } 6271 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6272 navHandledKey(fakeKeyDirection, 1, true, 0); 6273 } 6274 } 6275 } 6276 return result; 6277 } 6278 6279 @Override 6280 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6281 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6282 6283 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6284 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6285 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6286 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6287 6288 int measuredHeight = heightSize; 6289 int measuredWidth = widthSize; 6290 6291 // Grab the content size from WebViewCore. 6292 int contentHeight = contentToViewDimension(mContentHeight); 6293 int contentWidth = contentToViewDimension(mContentWidth); 6294 6295// Log.d(LOGTAG, "------- measure " + heightMode); 6296 6297 if (heightMode != MeasureSpec.EXACTLY) { 6298 mHeightCanMeasure = true; 6299 measuredHeight = contentHeight; 6300 if (heightMode == MeasureSpec.AT_MOST) { 6301 // If we are larger than the AT_MOST height, then our height can 6302 // no longer be measured and we should scroll internally. 6303 if (measuredHeight > heightSize) { 6304 measuredHeight = heightSize; 6305 mHeightCanMeasure = false; 6306 } 6307 } 6308 } else { 6309 mHeightCanMeasure = false; 6310 } 6311 if (mNativeClass != 0) { 6312 nativeSetHeightCanMeasure(mHeightCanMeasure); 6313 } 6314 // For the width, always use the given size unless unspecified. 6315 if (widthMode == MeasureSpec.UNSPECIFIED) { 6316 mWidthCanMeasure = true; 6317 measuredWidth = contentWidth; 6318 } else { 6319 mWidthCanMeasure = false; 6320 } 6321 6322 synchronized (this) { 6323 setMeasuredDimension(measuredWidth, measuredHeight); 6324 } 6325 } 6326 6327 @Override 6328 public boolean requestChildRectangleOnScreen(View child, 6329 Rect rect, 6330 boolean immediate) { 6331 // don't scroll while in zoom animation. When it is done, we will adjust 6332 // the necessary components (e.g., WebTextView if it is in editing mode) 6333 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6334 return false; 6335 } 6336 6337 rect.offset(child.getLeft() - child.getScrollX(), 6338 child.getTop() - child.getScrollY()); 6339 6340 Rect content = new Rect(viewToContentX(mScrollX), 6341 viewToContentY(mScrollY), 6342 viewToContentX(mScrollX + getWidth() 6343 - getVerticalScrollbarWidth()), 6344 viewToContentY(mScrollY + getViewHeightWithTitle())); 6345 content = nativeSubtractLayers(content); 6346 int screenTop = contentToViewY(content.top); 6347 int screenBottom = contentToViewY(content.bottom); 6348 int height = screenBottom - screenTop; 6349 int scrollYDelta = 0; 6350 6351 if (rect.bottom > screenBottom) { 6352 int oneThirdOfScreenHeight = height / 3; 6353 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6354 // If the rectangle is too tall to fit in the bottom two thirds 6355 // of the screen, place it at the top. 6356 scrollYDelta = rect.top - screenTop; 6357 } else { 6358 // If the rectangle will still fit on screen, we want its 6359 // top to be in the top third of the screen. 6360 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6361 } 6362 } else if (rect.top < screenTop) { 6363 scrollYDelta = rect.top - screenTop; 6364 } 6365 6366 int screenLeft = contentToViewX(content.left); 6367 int screenRight = contentToViewX(content.right); 6368 int width = screenRight - screenLeft; 6369 int scrollXDelta = 0; 6370 6371 if (rect.right > screenRight && rect.left > screenLeft) { 6372 if (rect.width() > width) { 6373 scrollXDelta += (rect.left - screenLeft); 6374 } else { 6375 scrollXDelta += (rect.right - screenRight); 6376 } 6377 } else if (rect.left < screenLeft) { 6378 scrollXDelta -= (screenLeft - rect.left); 6379 } 6380 6381 if ((scrollYDelta | scrollXDelta) != 0) { 6382 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6383 } 6384 6385 return false; 6386 } 6387 6388 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6389 String replace, int newStart, int newEnd) { 6390 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6391 arg.mReplace = replace; 6392 arg.mNewStart = newStart; 6393 arg.mNewEnd = newEnd; 6394 mTextGeneration++; 6395 arg.mTextGeneration = mTextGeneration; 6396 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6397 } 6398 6399 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6400 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6401 arg.mEvent = event; 6402 arg.mCurrentText = currentText; 6403 // Increase our text generation number, and pass it to webcore thread 6404 mTextGeneration++; 6405 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6406 // WebKit's document state is not saved until about to leave the page. 6407 // To make sure the host application, like Browser, has the up to date 6408 // document state when it goes to background, we force to save the 6409 // document state. 6410 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6411 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6412 cursorData(), 1000); 6413 } 6414 6415 /* package */ synchronized WebViewCore getWebViewCore() { 6416 return mWebViewCore; 6417 } 6418 6419 //------------------------------------------------------------------------- 6420 // Methods can be called from a separate thread, like WebViewCore 6421 // If it needs to call the View system, it has to send message. 6422 //------------------------------------------------------------------------- 6423 6424 /** 6425 * General handler to receive message coming from webkit thread 6426 */ 6427 class PrivateHandler extends Handler { 6428 @Override 6429 public void handleMessage(Message msg) { 6430 // exclude INVAL_RECT_MSG_ID since it is frequently output 6431 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6432 if (msg.what >= FIRST_PRIVATE_MSG_ID 6433 && msg.what <= LAST_PRIVATE_MSG_ID) { 6434 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6435 - FIRST_PRIVATE_MSG_ID]); 6436 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6437 && msg.what <= LAST_PACKAGE_MSG_ID) { 6438 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6439 - FIRST_PACKAGE_MSG_ID]); 6440 } else { 6441 Log.v(LOGTAG, Integer.toString(msg.what)); 6442 } 6443 } 6444 if (mWebViewCore == null) { 6445 // after WebView's destroy() is called, skip handling messages. 6446 return; 6447 } 6448 switch (msg.what) { 6449 case REMEMBER_PASSWORD: { 6450 mDatabase.setUsernamePassword( 6451 msg.getData().getString("host"), 6452 msg.getData().getString("username"), 6453 msg.getData().getString("password")); 6454 ((Message) msg.obj).sendToTarget(); 6455 break; 6456 } 6457 case NEVER_REMEMBER_PASSWORD: { 6458 mDatabase.setUsernamePassword( 6459 msg.getData().getString("host"), null, null); 6460 ((Message) msg.obj).sendToTarget(); 6461 break; 6462 } 6463 case PREVENT_DEFAULT_TIMEOUT: { 6464 // if timeout happens, cancel it so that it won't block UI 6465 // to continue handling touch events 6466 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6467 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6468 || (msg.arg1 == MotionEvent.ACTION_MOVE 6469 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6470 cancelWebCoreTouchEvent( 6471 viewToContentX((int) mLastTouchX + mScrollX), 6472 viewToContentY((int) mLastTouchY + mScrollY), 6473 true); 6474 } 6475 break; 6476 } 6477 case SWITCH_TO_SHORTPRESS: { 6478 if (mTouchMode == TOUCH_INIT_MODE) { 6479 if (!getSettings().supportTouchOnly() 6480 && mPreventDefault != PREVENT_DEFAULT_YES) { 6481 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6482 updateSelection(); 6483 } else { 6484 // set to TOUCH_SHORTPRESS_MODE so that it won't 6485 // trigger double tap any more 6486 mTouchMode = TOUCH_SHORTPRESS_MODE; 6487 } 6488 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6489 mTouchMode = TOUCH_DONE_MODE; 6490 } 6491 break; 6492 } 6493 case SWITCH_TO_LONGPRESS: { 6494 if (getSettings().supportTouchOnly()) { 6495 removeTouchHighlight(false); 6496 } 6497 if (inFullScreenMode() || mDeferTouchProcess) { 6498 TouchEventData ted = new TouchEventData(); 6499 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6500 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6501 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6502 // metaState for long press is tricky. Should it be the 6503 // state when the press started or when the press was 6504 // released? Or some intermediary key state? For 6505 // simplicity for now, we don't set it. 6506 ted.mMetaState = 0; 6507 ted.mReprocess = mDeferTouchProcess; 6508 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6509 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6510 mTouchMode = TOUCH_DONE_MODE; 6511 performLongClick(); 6512 } 6513 break; 6514 } 6515 case RELEASE_SINGLE_TAP: { 6516 doShortPress(); 6517 break; 6518 } 6519 case SCROLL_BY_MSG_ID: 6520 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6521 break; 6522 case SYNC_SCROLL_TO_MSG_ID: 6523 if (mUserScroll) { 6524 // if user has scrolled explicitly, don't sync the 6525 // scroll position any more 6526 mUserScroll = false; 6527 break; 6528 } 6529 // fall through 6530 case SCROLL_TO_MSG_ID: 6531 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6532 // if we can't scroll to the exact position due to pin, 6533 // send a message to WebCore to re-scroll when we get a 6534 // new picture 6535 mUserScroll = false; 6536 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6537 msg.arg1, msg.arg2); 6538 } 6539 break; 6540 case SPAWN_SCROLL_TO_MSG_ID: 6541 spawnContentScrollTo(msg.arg1, msg.arg2); 6542 break; 6543 case UPDATE_ZOOM_RANGE: { 6544 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 6545 // mScrollX contains the new minPrefWidth 6546 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 6547 break; 6548 } 6549 case REPLACE_BASE_CONTENT: { 6550 nativeReplaceBaseContent(msg.arg1); 6551 break; 6552 } 6553 case NEW_PICTURE_MSG_ID: { 6554 // called for new content 6555 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 6556 nativeSetBaseLayer(draw.mBaseLayer); 6557 final Point viewSize = draw.mViewPoint; 6558 WebViewCore.ViewState viewState = draw.mViewState; 6559 boolean isPictureAfterFirstLayout = viewState != null; 6560 if (isPictureAfterFirstLayout) { 6561 // Reset the last sent data here since dealing with new page. 6562 mLastWidthSent = 0; 6563 mZoomManager.onFirstLayout(draw); 6564 if (!mDrawHistory) { 6565 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 6566 // As we are on a new page, remove the WebTextView. This 6567 // is necessary for page loads driven by webkit, and in 6568 // particular when the user was on a password field, so 6569 // the WebTextView was visible. 6570 clearTextEntry(); 6571 } 6572 } 6573 6574 // We update the layout (i.e. request a layout from the 6575 // view system) if the last view size that we sent to 6576 // WebCore matches the view size of the picture we just 6577 // received in the fixed dimension. 6578 final boolean updateLayout = viewSize.x == mLastWidthSent 6579 && viewSize.y == mLastHeightSent; 6580 recordNewContentSize(draw.mWidthHeight.x, 6581 draw.mWidthHeight.y, updateLayout); 6582 if (DebugFlags.WEB_VIEW) { 6583 Rect b = draw.mInvalRegion.getBounds(); 6584 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6585 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6586 } 6587 invalidateContentRect(draw.mInvalRegion.getBounds()); 6588 6589 if (mPictureListener != null) { 6590 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6591 } 6592 6593 // update the zoom information based on the new picture 6594 mZoomManager.onNewPicture(draw); 6595 6596 if (draw.mFocusSizeChanged && inEditingMode()) { 6597 mFocusSizeChanged = true; 6598 } 6599 if (isPictureAfterFirstLayout) { 6600 mViewManager.postReadyToDrawAll(); 6601 } 6602 break; 6603 } 6604 case WEBCORE_INITIALIZED_MSG_ID: 6605 // nativeCreate sets mNativeClass to a non-zero value 6606 nativeCreate(msg.arg1); 6607 break; 6608 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6609 // Make sure that the textfield is currently focused 6610 // and representing the same node as the pointer. 6611 if (inEditingMode() && 6612 mWebTextView.isSameTextField(msg.arg1)) { 6613 if (msg.getData().getBoolean("password")) { 6614 Spannable text = (Spannable) mWebTextView.getText(); 6615 int start = Selection.getSelectionStart(text); 6616 int end = Selection.getSelectionEnd(text); 6617 mWebTextView.setInPassword(true); 6618 // Restore the selection, which may have been 6619 // ruined by setInPassword. 6620 Spannable pword = 6621 (Spannable) mWebTextView.getText(); 6622 Selection.setSelection(pword, start, end); 6623 // If the text entry has created more events, ignore 6624 // this one. 6625 } else if (msg.arg2 == mTextGeneration) { 6626 mWebTextView.setTextAndKeepSelection( 6627 (String) msg.obj); 6628 } 6629 } 6630 break; 6631 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6632 displaySoftKeyboard(true); 6633 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 6634 case UPDATE_TEXT_SELECTION_MSG_ID: 6635 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6636 (WebViewCore.TextSelectionData) msg.obj); 6637 break; 6638 case RETURN_LABEL: 6639 if (inEditingMode() 6640 && mWebTextView.isSameTextField(msg.arg1)) { 6641 mWebTextView.setHint((String) msg.obj); 6642 InputMethodManager imm 6643 = InputMethodManager.peekInstance(); 6644 // The hint is propagated to the IME in 6645 // onCreateInputConnection. If the IME is already 6646 // active, restart it so that its hint text is updated. 6647 if (imm != null && imm.isActive(mWebTextView)) { 6648 imm.restartInput(mWebTextView); 6649 } 6650 } 6651 break; 6652 case UNHANDLED_NAV_KEY: 6653 navHandledKey(msg.arg1, 1, false, 0); 6654 break; 6655 case UPDATE_TEXT_ENTRY_MSG_ID: 6656 // this is sent after finishing resize in WebViewCore. Make 6657 // sure the text edit box is still on the screen. 6658 if (inEditingMode() && nativeCursorIsTextInput()) { 6659 mWebTextView.bringIntoView(); 6660 rebuildWebTextView(); 6661 } 6662 break; 6663 case CLEAR_TEXT_ENTRY: 6664 clearTextEntry(); 6665 break; 6666 case INVAL_RECT_MSG_ID: { 6667 Rect r = (Rect)msg.obj; 6668 if (r == null) { 6669 invalidate(); 6670 } else { 6671 // we need to scale r from content into view coords, 6672 // which viewInvalidate() does for us 6673 viewInvalidate(r.left, r.top, r.right, r.bottom); 6674 } 6675 break; 6676 } 6677 case REQUEST_FORM_DATA: 6678 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6679 if (mWebTextView.isSameTextField(msg.arg1)) { 6680 mWebTextView.setAdapterCustom(adapter); 6681 } 6682 break; 6683 case RESUME_WEBCORE_PRIORITY: 6684 WebViewCore.resumePriority(); 6685 WebViewCore.resumeUpdatePicture(mWebViewCore); 6686 break; 6687 6688 case LONG_PRESS_CENTER: 6689 // as this is shared by keydown and trackballdown, reset all 6690 // the states 6691 mGotCenterDown = false; 6692 mTrackballDown = false; 6693 performLongClick(); 6694 break; 6695 6696 case WEBCORE_NEED_TOUCH_EVENTS: 6697 mForwardTouchEvents = (msg.arg1 != 0); 6698 break; 6699 6700 case PREVENT_TOUCH_ID: 6701 if (inFullScreenMode()) { 6702 break; 6703 } 6704 if (msg.obj == null) { 6705 if (msg.arg1 == MotionEvent.ACTION_DOWN 6706 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6707 // if prevent default is called from WebCore, UI 6708 // will not handle the rest of the touch events any 6709 // more. 6710 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6711 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6712 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6713 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6714 // the return for the first ACTION_MOVE will decide 6715 // whether UI will handle touch or not. Currently no 6716 // support for alternating prevent default 6717 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6718 : PREVENT_DEFAULT_NO; 6719 } 6720 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6721 mTouchHighlightRegion.setEmpty(); 6722 } 6723 } else if (msg.arg2 == 0) { 6724 // prevent default is not called in WebCore, so the 6725 // message needs to be reprocessed in UI 6726 TouchEventData ted = (TouchEventData) msg.obj; 6727 switch (ted.mAction) { 6728 case MotionEvent.ACTION_DOWN: 6729 mLastDeferTouchX = contentToViewX(ted.mX) 6730 - mScrollX; 6731 mLastDeferTouchY = contentToViewY(ted.mY) 6732 - mScrollY; 6733 mDeferTouchMode = TOUCH_INIT_MODE; 6734 break; 6735 case MotionEvent.ACTION_MOVE: { 6736 // no snapping in defer process 6737 int x = contentToViewX(ted.mX) - mScrollX; 6738 int y = contentToViewY(ted.mY) - mScrollY; 6739 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6740 mDeferTouchMode = TOUCH_DRAG_MODE; 6741 mLastDeferTouchX = x; 6742 mLastDeferTouchY = y; 6743 startDrag(); 6744 } 6745 int deltaX = pinLocX((int) (mScrollX 6746 + mLastDeferTouchX - x)) 6747 - mScrollX; 6748 int deltaY = pinLocY((int) (mScrollY 6749 + mLastDeferTouchY - y)) 6750 - mScrollY; 6751 doDrag(deltaX, deltaY); 6752 if (deltaX != 0) mLastDeferTouchX = x; 6753 if (deltaY != 0) mLastDeferTouchY = y; 6754 break; 6755 } 6756 case MotionEvent.ACTION_UP: 6757 case MotionEvent.ACTION_CANCEL: 6758 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6759 // no fling in defer process 6760 WebViewCore.resumePriority(); 6761 WebViewCore.resumeUpdatePicture(mWebViewCore); 6762 } 6763 mDeferTouchMode = TOUCH_DONE_MODE; 6764 break; 6765 case WebViewCore.ACTION_DOUBLETAP: 6766 // doDoubleTap() needs mLastTouchX/Y as anchor 6767 mLastTouchX = contentToViewX(ted.mX) - mScrollX; 6768 mLastTouchY = contentToViewY(ted.mY) - mScrollY; 6769 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6770 mDeferTouchMode = TOUCH_DONE_MODE; 6771 break; 6772 case WebViewCore.ACTION_LONGPRESS: 6773 HitTestResult hitTest = getHitTestResult(); 6774 if (hitTest != null && hitTest.mType 6775 != HitTestResult.UNKNOWN_TYPE) { 6776 performLongClick(); 6777 } 6778 mDeferTouchMode = TOUCH_DONE_MODE; 6779 break; 6780 } 6781 } 6782 break; 6783 6784 case REQUEST_KEYBOARD: 6785 if (msg.arg1 == 0) { 6786 hideSoftKeyboard(); 6787 } else { 6788 displaySoftKeyboard(false); 6789 } 6790 break; 6791 6792 case FIND_AGAIN: 6793 // Ignore if find has been dismissed. 6794 if (mFindIsUp && mFindCallback != null) { 6795 mFindCallback.findAll(); 6796 } 6797 break; 6798 6799 case DRAG_HELD_MOTIONLESS: 6800 mHeldMotionless = MOTIONLESS_TRUE; 6801 invalidate(); 6802 // fall through to keep scrollbars awake 6803 6804 case AWAKEN_SCROLL_BARS: 6805 if (mTouchMode == TOUCH_DRAG_MODE 6806 && mHeldMotionless == MOTIONLESS_TRUE) { 6807 awakenScrollBars(ViewConfiguration 6808 .getScrollDefaultDelay(), false); 6809 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6810 .obtainMessage(AWAKEN_SCROLL_BARS), 6811 ViewConfiguration.getScrollDefaultDelay()); 6812 } 6813 break; 6814 6815 case DO_MOTION_UP: 6816 doMotionUp(msg.arg1, msg.arg2); 6817 break; 6818 6819 case SHOW_FULLSCREEN: { 6820 View view = (View) msg.obj; 6821 int npp = msg.arg1; 6822 6823 if (mFullScreenHolder != null) { 6824 Log.w(LOGTAG, "Should not have another full screen."); 6825 mFullScreenHolder.dismiss(); 6826 } 6827 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 6828 mFullScreenHolder.setContentView(view); 6829 mFullScreenHolder.setCancelable(false); 6830 mFullScreenHolder.setCanceledOnTouchOutside(false); 6831 mFullScreenHolder.show(); 6832 6833 break; 6834 } 6835 case HIDE_FULLSCREEN: 6836 if (inFullScreenMode()) { 6837 mFullScreenHolder.dismiss(); 6838 mFullScreenHolder = null; 6839 } 6840 break; 6841 6842 case DOM_FOCUS_CHANGED: 6843 if (inEditingMode()) { 6844 nativeClearCursor(); 6845 rebuildWebTextView(); 6846 } 6847 break; 6848 6849 case SHOW_RECT_MSG_ID: { 6850 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6851 int x = mScrollX; 6852 int left = contentToViewX(data.mLeft); 6853 int width = contentToViewDimension(data.mWidth); 6854 int maxWidth = contentToViewDimension(data.mContentWidth); 6855 int viewWidth = getViewWidth(); 6856 if (width < viewWidth) { 6857 // center align 6858 x += left + width / 2 - mScrollX - viewWidth / 2; 6859 } else { 6860 x += (int) (left + data.mXPercentInDoc * width 6861 - mScrollX - data.mXPercentInView * viewWidth); 6862 } 6863 if (DebugFlags.WEB_VIEW) { 6864 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6865 width + ",maxWidth=" + maxWidth + 6866 ",viewWidth=" + viewWidth + ",x=" 6867 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6868 ",xPercentInView=" + data.mXPercentInView+ ")"); 6869 } 6870 // use the passing content width to cap x as the current 6871 // mContentWidth may not be updated yet 6872 x = Math.max(0, 6873 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6874 int top = contentToViewY(data.mTop); 6875 int height = contentToViewDimension(data.mHeight); 6876 int maxHeight = contentToViewDimension(data.mContentHeight); 6877 int viewHeight = getViewHeight(); 6878 int y = (int) (top + data.mYPercentInDoc * height - 6879 data.mYPercentInView * viewHeight); 6880 if (DebugFlags.WEB_VIEW) { 6881 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6882 height + ",maxHeight=" + maxHeight + 6883 ",viewHeight=" + viewHeight + ",y=" 6884 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6885 ",yPercentInView=" + data.mYPercentInView+ ")"); 6886 } 6887 // use the passing content height to cap y as the current 6888 // mContentHeight may not be updated yet 6889 y = Math.max(0, 6890 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6891 // We need to take into account the visible title height 6892 // when scrolling since y is an absolute view position. 6893 y = Math.max(0, y - getVisibleTitleHeight()); 6894 scrollTo(x, y); 6895 } 6896 break; 6897 6898 case CENTER_FIT_RECT: 6899 Rect r = (Rect)msg.obj; 6900 centerFitRect(r.left, r.top, r.width(), r.height()); 6901 break; 6902 6903 case SET_SCROLLBAR_MODES: 6904 mHorizontalScrollBarMode = msg.arg1; 6905 mVerticalScrollBarMode = msg.arg2; 6906 break; 6907 6908 case SELECTION_STRING_CHANGED: 6909 if (mAccessibilityInjector != null) { 6910 String selectionString = (String) msg.obj; 6911 mAccessibilityInjector.onSelectionStringChange(selectionString); 6912 } 6913 break; 6914 6915 case SET_TOUCH_HIGHLIGHT_RECTS: 6916 invalidate(mTouchHighlightRegion.getBounds()); 6917 mTouchHighlightRegion.setEmpty(); 6918 if (msg.obj != null) { 6919 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 6920 for (Rect rect : rects) { 6921 Rect viewRect = contentToViewRect(rect); 6922 // some sites, like stories in nytimes.com, set 6923 // mouse event handler in the top div. It is not 6924 // user friendly to highlight the div if it covers 6925 // more than half of the screen. 6926 if (viewRect.width() < getWidth() >> 1 6927 || viewRect.height() < getHeight() >> 1) { 6928 mTouchHighlightRegion.union(viewRect); 6929 invalidate(viewRect); 6930 } else { 6931 Log.w(LOGTAG, "Skip the huge selection rect:" 6932 + viewRect); 6933 } 6934 } 6935 } 6936 break; 6937 6938 case SAVE_WEBARCHIVE_FINISHED: 6939 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 6940 if (saveMessage.mCallback != null) { 6941 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 6942 } 6943 break; 6944 6945 default: 6946 super.handleMessage(msg); 6947 break; 6948 } 6949 } 6950 } 6951 6952 /** 6953 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 6954 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 6955 */ 6956 private void updateTextSelectionFromMessage(int nodePointer, 6957 int textGeneration, WebViewCore.TextSelectionData data) { 6958 if (inEditingMode() 6959 && mWebTextView.isSameTextField(nodePointer) 6960 && textGeneration == mTextGeneration) { 6961 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 6962 } 6963 } 6964 6965 // Class used to use a dropdown for a <select> element 6966 private class InvokeListBox implements Runnable { 6967 // Whether the listbox allows multiple selection. 6968 private boolean mMultiple; 6969 // Passed in to a list with multiple selection to tell 6970 // which items are selected. 6971 private int[] mSelectedArray; 6972 // Passed in to a list with single selection to tell 6973 // where the initial selection is. 6974 private int mSelection; 6975 6976 private Container[] mContainers; 6977 6978 // Need these to provide stable ids to my ArrayAdapter, 6979 // which normally does not have stable ids. (Bug 1250098) 6980 private class Container extends Object { 6981 /** 6982 * Possible values for mEnabled. Keep in sync with OptionStatus in 6983 * WebViewCore.cpp 6984 */ 6985 final static int OPTGROUP = -1; 6986 final static int OPTION_DISABLED = 0; 6987 final static int OPTION_ENABLED = 1; 6988 6989 String mString; 6990 int mEnabled; 6991 int mId; 6992 6993 public String toString() { 6994 return mString; 6995 } 6996 } 6997 6998 /** 6999 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7000 * and allow filtering. 7001 */ 7002 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7003 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7004 super(context, 7005 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7006 com.android.internal.R.layout.select_dialog_singlechoice, 7007 objects); 7008 } 7009 7010 @Override 7011 public View getView(int position, View convertView, 7012 ViewGroup parent) { 7013 // Always pass in null so that we will get a new CheckedTextView 7014 // Otherwise, an item which was previously used as an <optgroup> 7015 // element (i.e. has no check), could get used as an <option> 7016 // element, which needs a checkbox/radio, but it would not have 7017 // one. 7018 convertView = super.getView(position, null, parent); 7019 Container c = item(position); 7020 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7021 // ListView does not draw dividers between disabled and 7022 // enabled elements. Use a LinearLayout to provide dividers 7023 LinearLayout layout = new LinearLayout(mContext); 7024 layout.setOrientation(LinearLayout.VERTICAL); 7025 if (position > 0) { 7026 View dividerTop = new View(mContext); 7027 dividerTop.setBackgroundResource( 7028 android.R.drawable.divider_horizontal_bright); 7029 layout.addView(dividerTop); 7030 } 7031 7032 if (Container.OPTGROUP == c.mEnabled) { 7033 // Currently select_dialog_multichoice and 7034 // select_dialog_singlechoice are CheckedTextViews. If 7035 // that changes, the class cast will no longer be valid. 7036 Assert.assertTrue( 7037 convertView instanceof CheckedTextView); 7038 ((CheckedTextView) convertView).setCheckMarkDrawable( 7039 null); 7040 } else { 7041 // c.mEnabled == Container.OPTION_DISABLED 7042 // Draw the disabled element in a disabled state. 7043 convertView.setEnabled(false); 7044 } 7045 7046 layout.addView(convertView); 7047 if (position < getCount() - 1) { 7048 View dividerBottom = new View(mContext); 7049 dividerBottom.setBackgroundResource( 7050 android.R.drawable.divider_horizontal_bright); 7051 layout.addView(dividerBottom); 7052 } 7053 return layout; 7054 } 7055 return convertView; 7056 } 7057 7058 @Override 7059 public boolean hasStableIds() { 7060 // AdapterView's onChanged method uses this to determine whether 7061 // to restore the old state. Return false so that the old (out 7062 // of date) state does not replace the new, valid state. 7063 return false; 7064 } 7065 7066 private Container item(int position) { 7067 if (position < 0 || position >= getCount()) { 7068 return null; 7069 } 7070 return (Container) getItem(position); 7071 } 7072 7073 @Override 7074 public long getItemId(int position) { 7075 Container item = item(position); 7076 if (item == null) { 7077 return -1; 7078 } 7079 return item.mId; 7080 } 7081 7082 @Override 7083 public boolean areAllItemsEnabled() { 7084 return false; 7085 } 7086 7087 @Override 7088 public boolean isEnabled(int position) { 7089 Container item = item(position); 7090 if (item == null) { 7091 return false; 7092 } 7093 return Container.OPTION_ENABLED == item.mEnabled; 7094 } 7095 } 7096 7097 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7098 mMultiple = true; 7099 mSelectedArray = selected; 7100 7101 int length = array.length; 7102 mContainers = new Container[length]; 7103 for (int i = 0; i < length; i++) { 7104 mContainers[i] = new Container(); 7105 mContainers[i].mString = array[i]; 7106 mContainers[i].mEnabled = enabled[i]; 7107 mContainers[i].mId = i; 7108 } 7109 } 7110 7111 private InvokeListBox(String[] array, int[] enabled, int selection) { 7112 mSelection = selection; 7113 mMultiple = false; 7114 7115 int length = array.length; 7116 mContainers = new Container[length]; 7117 for (int i = 0; i < length; i++) { 7118 mContainers[i] = new Container(); 7119 mContainers[i].mString = array[i]; 7120 mContainers[i].mEnabled = enabled[i]; 7121 mContainers[i].mId = i; 7122 } 7123 } 7124 7125 /* 7126 * Whenever the data set changes due to filtering, this class ensures 7127 * that the checked item remains checked. 7128 */ 7129 private class SingleDataSetObserver extends DataSetObserver { 7130 private long mCheckedId; 7131 private ListView mListView; 7132 private Adapter mAdapter; 7133 7134 /* 7135 * Create a new observer. 7136 * @param id The ID of the item to keep checked. 7137 * @param l ListView for getting and clearing the checked states 7138 * @param a Adapter for getting the IDs 7139 */ 7140 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7141 mCheckedId = id; 7142 mListView = l; 7143 mAdapter = a; 7144 } 7145 7146 public void onChanged() { 7147 // The filter may have changed which item is checked. Find the 7148 // item that the ListView thinks is checked. 7149 int position = mListView.getCheckedItemPosition(); 7150 long id = mAdapter.getItemId(position); 7151 if (mCheckedId != id) { 7152 // Clear the ListView's idea of the checked item, since 7153 // it is incorrect 7154 mListView.clearChoices(); 7155 // Search for mCheckedId. If it is in the filtered list, 7156 // mark it as checked 7157 int count = mAdapter.getCount(); 7158 for (int i = 0; i < count; i++) { 7159 if (mAdapter.getItemId(i) == mCheckedId) { 7160 mListView.setItemChecked(i, true); 7161 break; 7162 } 7163 } 7164 } 7165 } 7166 7167 public void onInvalidate() {} 7168 } 7169 7170 public void run() { 7171 final ListView listView = (ListView) LayoutInflater.from(mContext) 7172 .inflate(com.android.internal.R.layout.select_dialog, null); 7173 final MyArrayListAdapter adapter = new 7174 MyArrayListAdapter(mContext, mContainers, mMultiple); 7175 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7176 .setView(listView).setCancelable(true) 7177 .setInverseBackgroundForced(true); 7178 7179 if (mMultiple) { 7180 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7181 public void onClick(DialogInterface dialog, int which) { 7182 mWebViewCore.sendMessage( 7183 EventHub.LISTBOX_CHOICES, 7184 adapter.getCount(), 0, 7185 listView.getCheckedItemPositions()); 7186 }}); 7187 b.setNegativeButton(android.R.string.cancel, 7188 new DialogInterface.OnClickListener() { 7189 public void onClick(DialogInterface dialog, int which) { 7190 mWebViewCore.sendMessage( 7191 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7192 }}); 7193 } 7194 final AlertDialog dialog = b.create(); 7195 listView.setAdapter(adapter); 7196 listView.setFocusableInTouchMode(true); 7197 // There is a bug (1250103) where the checks in a ListView with 7198 // multiple items selected are associated with the positions, not 7199 // the ids, so the items do not properly retain their checks when 7200 // filtered. Do not allow filtering on multiple lists until 7201 // that bug is fixed. 7202 7203 listView.setTextFilterEnabled(!mMultiple); 7204 if (mMultiple) { 7205 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7206 int length = mSelectedArray.length; 7207 for (int i = 0; i < length; i++) { 7208 listView.setItemChecked(mSelectedArray[i], true); 7209 } 7210 } else { 7211 listView.setOnItemClickListener(new OnItemClickListener() { 7212 public void onItemClick(AdapterView parent, View v, 7213 int position, long id) { 7214 mWebViewCore.sendMessage( 7215 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 7216 dialog.dismiss(); 7217 } 7218 }); 7219 if (mSelection != -1) { 7220 listView.setSelection(mSelection); 7221 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7222 listView.setItemChecked(mSelection, true); 7223 DataSetObserver observer = new SingleDataSetObserver( 7224 adapter.getItemId(mSelection), listView, adapter); 7225 adapter.registerDataSetObserver(observer); 7226 } 7227 } 7228 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7229 public void onCancel(DialogInterface dialog) { 7230 mWebViewCore.sendMessage( 7231 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7232 } 7233 }); 7234 dialog.show(); 7235 } 7236 } 7237 7238 /* 7239 * Request a dropdown menu for a listbox with multiple selection. 7240 * 7241 * @param array Labels for the listbox. 7242 * @param enabledArray State for each element in the list. See static 7243 * integers in Container class. 7244 * @param selectedArray Which positions are initally selected. 7245 */ 7246 void requestListBox(String[] array, int[] enabledArray, int[] 7247 selectedArray) { 7248 mPrivateHandler.post( 7249 new InvokeListBox(array, enabledArray, selectedArray)); 7250 } 7251 7252 /* 7253 * Request a dropdown menu for a listbox with single selection or a single 7254 * <select> element. 7255 * 7256 * @param array Labels for the listbox. 7257 * @param enabledArray State for each element in the list. See static 7258 * integers in Container class. 7259 * @param selection Which position is initally selected. 7260 */ 7261 void requestListBox(String[] array, int[] enabledArray, int selection) { 7262 mPrivateHandler.post( 7263 new InvokeListBox(array, enabledArray, selection)); 7264 } 7265 7266 // called by JNI 7267 private void sendMoveFocus(int frame, int node) { 7268 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7269 new WebViewCore.CursorData(frame, node, 0, 0)); 7270 } 7271 7272 // called by JNI 7273 private void sendMoveMouse(int frame, int node, int x, int y) { 7274 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7275 new WebViewCore.CursorData(frame, node, x, y)); 7276 } 7277 7278 /* 7279 * Send a mouse move event to the webcore thread. 7280 * 7281 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7282 * which wants key events, but it is not the focus. This 7283 * will make the visual appear as though nothing is in 7284 * focus. Remove the WebTextView, if present, and stop 7285 * drawing the blinking caret. 7286 * called by JNI 7287 */ 7288 private void sendMoveMouseIfLatest(boolean removeFocus) { 7289 if (removeFocus) { 7290 clearTextEntry(); 7291 } 7292 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7293 cursorData()); 7294 } 7295 7296 // called by JNI 7297 private void sendMotionUp(int touchGeneration, 7298 int frame, int node, int x, int y) { 7299 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7300 touchUpData.mMoveGeneration = touchGeneration; 7301 touchUpData.mFrame = frame; 7302 touchUpData.mNode = node; 7303 touchUpData.mX = x; 7304 touchUpData.mY = y; 7305 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7306 } 7307 7308 7309 private int getScaledMaxXScroll() { 7310 int width; 7311 if (mHeightCanMeasure == false) { 7312 width = getViewWidth() / 4; 7313 } else { 7314 Rect visRect = new Rect(); 7315 calcOurVisibleRect(visRect); 7316 width = visRect.width() / 2; 7317 } 7318 // FIXME the divisor should be retrieved from somewhere 7319 return viewToContentX(width); 7320 } 7321 7322 private int getScaledMaxYScroll() { 7323 int height; 7324 if (mHeightCanMeasure == false) { 7325 height = getViewHeight() / 4; 7326 } else { 7327 Rect visRect = new Rect(); 7328 calcOurVisibleRect(visRect); 7329 height = visRect.height() / 2; 7330 } 7331 // FIXME the divisor should be retrieved from somewhere 7332 // the closest thing today is hard-coded into ScrollView.java 7333 // (from ScrollView.java, line 363) int maxJump = height/2; 7334 return Math.round(height * mZoomManager.getInvScale()); 7335 } 7336 7337 /** 7338 * Called by JNI to invalidate view 7339 */ 7340 private void viewInvalidate() { 7341 invalidate(); 7342 } 7343 7344 /** 7345 * Pass the key directly to the page. This assumes that 7346 * nativePageShouldHandleShiftAndArrows() returned true. 7347 */ 7348 private void letPageHandleNavKey(int keyCode, long time, boolean down) { 7349 int keyEventAction; 7350 int eventHubAction; 7351 if (down) { 7352 keyEventAction = KeyEvent.ACTION_DOWN; 7353 eventHubAction = EventHub.KEY_DOWN; 7354 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7355 } else { 7356 keyEventAction = KeyEvent.ACTION_UP; 7357 eventHubAction = EventHub.KEY_UP; 7358 } 7359 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7360 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7361 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7362 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7363 , 0, 0, 0); 7364 mWebViewCore.sendMessage(eventHubAction, event); 7365 } 7366 7367 // return true if the key was handled 7368 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7369 long time) { 7370 if (mNativeClass == 0) { 7371 return false; 7372 } 7373 mLastCursorTime = time; 7374 mLastCursorBounds = nativeGetCursorRingBounds(); 7375 boolean keyHandled 7376 = nativeMoveCursor(keyCode, count, noScroll) == false; 7377 if (DebugFlags.WEB_VIEW) { 7378 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7379 + " mLastCursorTime=" + mLastCursorTime 7380 + " handled=" + keyHandled); 7381 } 7382 if (keyHandled == false || mHeightCanMeasure == false) { 7383 return keyHandled; 7384 } 7385 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7386 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7387 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7388 Rect visRect = new Rect(); 7389 calcOurVisibleRect(visRect); 7390 Rect outset = new Rect(visRect); 7391 int maxXScroll = visRect.width() / 2; 7392 int maxYScroll = visRect.height() / 2; 7393 outset.inset(-maxXScroll, -maxYScroll); 7394 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7395 return keyHandled; 7396 } 7397 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7398 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7399 maxXScroll); 7400 if (maxH > 0) { 7401 pinScrollBy(maxH, 0, true, 0); 7402 } else { 7403 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7404 -maxXScroll); 7405 if (maxH < 0) { 7406 pinScrollBy(maxH, 0, true, 0); 7407 } 7408 } 7409 if (mLastCursorBounds.isEmpty()) return keyHandled; 7410 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7411 return keyHandled; 7412 } 7413 if (DebugFlags.WEB_VIEW) { 7414 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7415 + contentCursorRingBounds); 7416 } 7417 requestRectangleOnScreen(viewCursorRingBounds); 7418 mUserScroll = true; 7419 return keyHandled; 7420 } 7421 7422 /** 7423 * @return If the page should receive Shift and arrows. 7424 */ 7425 private boolean pageShouldHandleShiftAndArrows() { 7426 // TODO: Maybe the injected script should announce its presence in 7427 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 7428 // will check that as one of the conditions it looks for 7429 return (nativePageShouldHandleShiftAndArrows() || mAccessibilityScriptInjected); 7430 } 7431 7432 /** 7433 * Set the background color. It's white by default. Pass 7434 * zero to make the view transparent. 7435 * @param color the ARGB color described by Color.java 7436 */ 7437 public void setBackgroundColor(int color) { 7438 mBackgroundColor = color; 7439 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7440 } 7441 7442 public void debugDump() { 7443 nativeDebugDump(); 7444 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7445 } 7446 7447 /** 7448 * Draw the HTML page into the specified canvas. This call ignores any 7449 * view-specific zoom, scroll offset, or other changes. It does not draw 7450 * any view-specific chrome, such as progress or URL bars. 7451 * 7452 * @hide only needs to be accessible to Browser and testing 7453 */ 7454 public void drawPage(Canvas canvas) { 7455 nativeDraw(canvas, 0, 0, false); 7456 } 7457 7458 /** 7459 * Set the time to wait between passing touches to WebCore. See also the 7460 * TOUCH_SENT_INTERVAL member for further discussion. 7461 * 7462 * @hide This is only used by the DRT test application. 7463 */ 7464 public void setTouchInterval(int interval) { 7465 mCurrentTouchInterval = interval; 7466 } 7467 7468 /** 7469 * Update our cache with updatedText. 7470 * @param updatedText The new text to put in our cache. 7471 */ 7472 /* package */ void updateCachedTextfield(String updatedText) { 7473 // Also place our generation number so that when we look at the cache 7474 // we recognize that it is up to date. 7475 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7476 } 7477 7478 private native int nativeCacheHitFramePointer(); 7479 private native Rect nativeCacheHitNodeBounds(); 7480 private native int nativeCacheHitNodePointer(); 7481 /* package */ native void nativeClearCursor(); 7482 private native void nativeCreate(int ptr); 7483 private native int nativeCursorFramePointer(); 7484 private native Rect nativeCursorNodeBounds(); 7485 private native int nativeCursorNodePointer(); 7486 /* package */ native boolean nativeCursorMatchesFocus(); 7487 private native boolean nativeCursorIntersects(Rect visibleRect); 7488 private native boolean nativeCursorIsAnchor(); 7489 private native boolean nativeCursorIsTextInput(); 7490 private native Point nativeCursorPosition(); 7491 private native String nativeCursorText(); 7492 /** 7493 * Returns true if the native cursor node says it wants to handle key events 7494 * (ala plugins). This can only be called if mNativeClass is non-zero! 7495 */ 7496 private native boolean nativeCursorWantsKeyEvents(); 7497 private native void nativeDebugDump(); 7498 private native void nativeDestroy(); 7499 7500 /** 7501 * Draw the picture set with a background color and extra. If 7502 * "splitIfNeeded" is true and the return value is not 0, the return value 7503 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 7504 * native allocation can be freed. 7505 */ 7506 private native int nativeDraw(Canvas canvas, int color, int extra, 7507 boolean splitIfNeeded); 7508 private native void nativeDumpDisplayTree(String urlOrNull); 7509 private native boolean nativeEvaluateLayersAnimations(); 7510 private native void nativeExtendSelection(int x, int y); 7511 private native int nativeFindAll(String findLower, String findUpper); 7512 private native void nativeFindNext(boolean forward); 7513 /* package */ native int nativeFocusCandidateFramePointer(); 7514 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7515 /* package */ native boolean nativeFocusCandidateIsPassword(); 7516 private native boolean nativeFocusCandidateIsRtlText(); 7517 private native boolean nativeFocusCandidateIsTextInput(); 7518 /* package */ native int nativeFocusCandidateMaxLength(); 7519 /* package */ native String nativeFocusCandidateName(); 7520 private native Rect nativeFocusCandidateNodeBounds(); 7521 /* package */ native int nativeFocusCandidatePointer(); 7522 private native String nativeFocusCandidateText(); 7523 private native int nativeFocusCandidateTextSize(); 7524 /** 7525 * Returns an integer corresponding to WebView.cpp::type. 7526 * See WebTextView.setType() 7527 */ 7528 private native int nativeFocusCandidateType(); 7529 private native boolean nativeFocusIsPlugin(); 7530 private native Rect nativeFocusNodeBounds(); 7531 /* package */ native int nativeFocusNodePointer(); 7532 private native Rect nativeGetCursorRingBounds(); 7533 private native String nativeGetSelection(); 7534 private native boolean nativeHasCursorNode(); 7535 private native boolean nativeHasFocusNode(); 7536 private native void nativeHideCursor(); 7537 private native boolean nativeHitSelection(int x, int y); 7538 private native String nativeImageURI(int x, int y); 7539 private native void nativeInstrumentReport(); 7540 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7541 // return true if the page has been scrolled 7542 private native boolean nativeMotionUp(int x, int y, int slop); 7543 // returns false if it handled the key 7544 private native boolean nativeMoveCursor(int keyCode, int count, 7545 boolean noScroll); 7546 private native int nativeMoveGeneration(); 7547 private native void nativeMoveSelection(int x, int y); 7548 /** 7549 * @return true if the page should get the shift and arrow keys, rather 7550 * than select text/navigation. 7551 * 7552 * If the focus is a plugin, or if the focus and cursor match and are 7553 * a contentEditable element, then the page should handle these keys. 7554 */ 7555 private native boolean nativePageShouldHandleShiftAndArrows(); 7556 private native boolean nativePointInNavCache(int x, int y, int slop); 7557 // Like many other of our native methods, you must make sure that 7558 // mNativeClass is not null before calling this method. 7559 private native void nativeRecordButtons(boolean focused, 7560 boolean pressed, boolean invalidate); 7561 private native void nativeResetSelection(); 7562 private native void nativeSelectAll(); 7563 private native void nativeSelectBestAt(Rect rect); 7564 private native int nativeSelectionX(); 7565 private native int nativeSelectionY(); 7566 private native int nativeFindIndex(); 7567 private native void nativeSetExtendSelection(); 7568 private native void nativeSetFindIsEmpty(); 7569 private native void nativeSetFindIsUp(boolean isUp); 7570 private native void nativeSetHeightCanMeasure(boolean measure); 7571 private native void nativeSetBaseLayer(int layer); 7572 private native void nativeShowCursorTimed(); 7573 private native void nativeReplaceBaseContent(int content); 7574 private native void nativeCopyBaseContentToPicture(Picture pict); 7575 private native boolean nativeHasContent(); 7576 private native void nativeSetSelectionPointer(boolean set, 7577 float scale, int x, int y); 7578 private native boolean nativeStartSelection(int x, int y); 7579 private native Rect nativeSubtractLayers(Rect content); 7580 private native int nativeTextGeneration(); 7581 // Never call this version except by updateCachedTextfield(String) - 7582 // we always want to pass in our generation number. 7583 private native void nativeUpdateCachedTextfield(String updatedText, 7584 int generation); 7585 private native boolean nativeWordSelection(int x, int y); 7586 // return NO_LEFTEDGE means failure. 7587 static final int NO_LEFTEDGE = -1; 7588 native int nativeGetBlockLeftEdge(int x, int y, float scale); 7589 7590 // Returns a pointer to the scrollable LayerAndroid at the given point. 7591 private native int nativeScrollableLayer(int x, int y); 7592 private native boolean nativeScrollLayer(int layer, int dx, int dy); 7593} 7594