Source/WebKit/mac/WebView/WebView.mm

   1 /*
   2  * Copyright (C) 2005-2013 Apple Inc. All rights reserved.
   3  * Copyright (C) 2006 David Smith (catfish.man@gmail.com)
   4  * Copyright (C) 2010 Igalia S.L
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1.  Redistributions of source code must retain the above copyright
  11  *     notice, this list of conditions and the following disclaimer.
  12  * 2.  Redistributions in binary form must reproduce the above copyright
  13  *     notice, this list of conditions and the following disclaimer in the
  14  *     documentation and/or other materials provided with the distribution.
  15  * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
  16  *     its contributors may be used to endorse or promote products derived
  17  *     from this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
  20  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  22  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  23  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  26  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #import "WebViewInternal.h"
  32 #import "WebViewData.h"
  33
  34 #import "DOMCSSStyleDeclarationInternal.h"
  35 #import "DOMDocumentInternal.h"
  36 #import "DOMNodeInternal.h"
  37 #import "DOMRangeInternal.h"
  38 #import "WebAlternativeTextClient.h"
  39 #import "WebApplicationCache.h"
  40 #import "WebBackForwardListInternal.h"
  41 #import "WebBaseNetscapePluginView.h"
  42 #import "WebCache.h"
  43 #import "WebChromeClient.h"
  44 #import "WebDOMOperationsPrivate.h"
  45 #import "WebDataSourceInternal.h"
  46 #import "WebDatabaseManagerPrivate.h"
  47 #import "WebDefaultEditingDelegate.h"
  48 #import "WebDefaultPolicyDelegate.h"
  49 #import "WebDefaultUIDelegate.h"
  50 #import "WebDelegateImplementationCaching.h"
  51 #import "WebDeviceOrientationClient.h"
  52 #import "WebDeviceOrientationProvider.h"
  53 #import "WebDocument.h"
  54 #import "WebDocumentInternal.h"
  55 #import "WebDownload.h"
  56 #import "WebDownloadInternal.h"
  57 #import "WebDragClient.h"
  58 #import "WebDynamicScrollBarsViewInternal.h"
  59 #import "WebEditingDelegate.h"
  60 #import "WebEditorClient.h"
  61 #import "WebFormDelegatePrivate.h"
  62 #import "WebFrameInternal.h"
  63 #import "WebFrameLoaderClient.h"
  64 #import "WebFrameNetworkingContext.h"
  65 #import "WebFrameViewInternal.h"
  66 #import "WebGeolocationClient.h"
  67 #import "WebGeolocationPositionInternal.h"
  68 #import "WebHTMLRepresentation.h"
  69 #import "WebHTMLViewInternal.h"
  70 #import "WebHistoryItemInternal.h"
  71 #import "WebIconDatabaseInternal.h"
  72 #import "WebInspector.h"
  73 #import "WebInspectorClient.h"
  74 #import "WebKitErrors.h"
  75 #import "WebKitFullScreenListener.h"
  76 #import "WebKitLogging.h"
  77 #import "WebKitNSStringExtras.h"
  78 #import "WebKitStatisticsPrivate.h"
  79 #import "WebKitSystemBits.h"
  80 #import "WebKitVersionChecks.h"
  81 #import "WebLocalizableStrings.h"
  82 #import "WebNSDataExtras.h"
  83 #import "WebNSDataExtrasPrivate.h"
  84 #import "WebNSDictionaryExtras.h"
  85 #import "WebNSURLExtras.h"
  86 #import "WebNSURLRequestExtras.h"
  87 #import "WebNSViewExtras.h"
  88 #import "WebNodeHighlight.h"
  89 #import "WebNotificationClient.h"
  90 #import "WebPDFView.h"
  91 #import "WebPanelAuthenticationHandler.h"
  92 #import "WebPlatformStrategies.h"
  93 #import "WebPluginDatabase.h"
  94 #import "WebPolicyDelegate.h"
  95 #import "WebPreferenceKeysPrivate.h"
  96 #import "WebPreferencesPrivate.h"
  97 #import "WebProgressTrackerClient.h"
  98 #import "WebScriptDebugDelegate.h"
  99 #import "WebScriptWorldInternal.h"
 100 #import "WebStorageManagerInternal.h"
 101 #import "WebSystemInterface.h"
 102 #import "WebTextCompletionController.h"
 103 #import "WebTextIterator.h"
 104 #import "WebUIDelegate.h"
 105 #import "WebUIDelegatePrivate.h"
 106 #import "WebUserMediaClient.h"
 107 #import "WebViewGroup.h"
 108 #import <CoreFoundation/CFSet.h>
 109 #import <Foundation/NSURLConnection.h>
 110 #import <JavaScriptCore/APICast.h>
 111 #import <JavaScriptCore/JSValueRef.h>
 112 #import <WebCore/AlternativeTextUIController.h>
 113 #import <WebCore/AnimationController.h>
 114 #import <WebCore/ApplicationCacheStorage.h>
 115 #import <WebCore/BackForwardController.h>
 116 #import <WebCore/BackForwardList.h>
 117 #import <WebCore/MemoryCache.h>
 118 #import <WebCore/Chrome.h>
 119 #import <WebCore/ColorMac.h>
 120 #import <WebCore/Cursor.h>
 121 #import <WebCore/DatabaseManager.h>
 122 #import <WebCore/Document.h>
 123 #import <WebCore/DocumentLoader.h>
 124 #import <WebCore/DragController.h>
 125 #import <WebCore/DragData.h>
 126 #import <WebCore/Editor.h>
 127 #import <WebCore/EventHandler.h>
 128 #import <WebCore/ExceptionHandlers.h>
 129 #import <WebCore/FocusController.h>
 130 #import <WebCore/FrameLoader.h>
 131 #import <WebCore/FrameSelection.h>
 132 #import <WebCore/FrameTree.h>
 133 #import <WebCore/FrameView.h>
 134 #import <WebCore/GCController.h>
 135 #import <WebCore/GeolocationController.h>
 136 #import <WebCore/GeolocationError.h>
 137 #import <WebCore/HTMLMediaElement.h>
 138 #import <WebCore/HTMLNames.h>
 139 #import <WebCore/HistoryController.h>
 140 #import <WebCore/HistoryItem.h>
 141 #import <WebCore/IconDatabase.h>
 142 #import <WebCore/JSCSSStyleDeclaration.h>
 143 #import <WebCore/JSDocument.h>
 144 #import <WebCore/JSElement.h>
 145 #import <WebCore/JSNodeList.h>
 146 #import <WebCore/JSNotification.h>
 147 #import <WebCore/Logging.h>
 148 #import <WebCore/MIMETypeRegistry.h>
 149 #import <WebCore/MainFrame.h>
 150 #import <WebCore/MemoryPressureHandler.h>
 151 #import <WebCore/NodeList.h>
 152 #import <WebCore/Notification.h>
 153 #import <WebCore/NotificationController.h>
 154 #import <WebCore/Page.h>
 155 #import <WebCore/PageCache.h>
 156 #import <WebCore/PageGroup.h>
 157 #import <WebCore/PlatformEventFactoryMac.h>
 158 #import <WebCore/ProgressTracker.h>
 159 #import <WebCore/RenderView.h>
 160 #import <WebCore/RenderWidget.h>
 161 #import <WebCore/ResourceHandle.h>
 162 #import <WebCore/ResourceLoadScheduler.h>
 163 #import <WebCore/ResourceRequest.h>
 164 #import <WebCore/RuntimeApplicationChecks.h>
 165 #import <WebCore/RuntimeEnabledFeatures.h>
 166 #import <WebCore/SchemeRegistry.h>
 167 #import <WebCore/ScriptController.h>
 168 #import <WebCore/SecurityOrigin.h>
 169 #import <WebCore/SecurityPolicy.h>
 170 #import <WebCore/Settings.h>
 171 #import <WebCore/StyleProperties.h>
 172 #import <WebCore/TextResourceDecoder.h>
 173 #import <WebCore/ThreadCheck.h>
 174 #import <WebCore/UserAgent.h>
 175 #import <WebCore/WebCoreObjCExtras.h>
 176 #import <WebCore/WebCoreView.h>
 177 #import <WebCore/Widget.h>
 178 #import <WebKitLegacy/DOM.h>
 179 #import <WebKitLegacy/DOMExtensions.h>
 180 #import <WebKitLegacy/DOMPrivate.h>
 181 #import <WebKitSystemInterface.h>
 182 #import <bindings/ScriptValue.h>
 183 #import <mach-o/dyld.h>
 184 #import <objc/objc-auto.h>
 185 #import <objc/runtime.h>
 186 #import <runtime/ArrayPrototype.h>
 187 #import <runtime/DateInstance.h>
 188 #import <runtime/InitializeThreading.h>
 189 #import <runtime/JSLock.h>
 190 #import <runtime/JSCJSValue.h>
 191 #import <wtf/Assertions.h>
 192 #import <wtf/HashTraits.h>
 193 #import <wtf/MainThread.h>
 194 #import <wtf/ObjcRuntimeExtras.h>
 195 #import <wtf/RefCountedLeakCounter.h>
 196 #import <wtf/RefPtr.h>
 197 #import <wtf/RunLoop.h>
 198 #import <wtf/StdLibExtras.h>
 199
 200 #if !PLATFORM(IOS)
 201 #import "WebContextMenuClient.h"
 202 #import "WebFullScreenController.h"
 203 #import "WebNSEventExtras.h"
 204 #import "WebNSObjectExtras.h"
 205 #import "WebNSPasteboardExtras.h"
 206 #import "WebNSPrintOperationExtras.h"
 207 #import "WebPDFView.h"
 208 #import <WebCore/WebVideoFullscreenController.h>
 209 #else
 210 #import "MemoryMeasure.h"
 211 #import "WebCaretChangeListener.h"
 212 #import "WebChromeClientIOS.h"
 213 #import "WebDefaultFormDelegate.h"
 214 #import "WebDefaultFrameLoadDelegate.h"
 215 #import "WebDefaultResourceLoadDelegate.h"
 216 #import "WebDefaultUIKitDelegate.h"
 217 #import "WebFixedPositionContent.h"
 218 #import "WebMailDelegate.h"
 219 #import "WebNSUserDefaultsExtras.h"
 220 #import "WebPDFViewIOS.h"
 221 #import "WebPlainWhiteView.h"
 222 #import "WebPluginController.h"
 223 #import "WebPolicyDelegatePrivate.h"
 224 #import "WebSQLiteDatabaseTrackerClient.h"
 225 #import "WebStorageManagerPrivate.h"
 226 #import "WebUIKitSupport.h"
 227 #import "WebVisiblePosition.h"
 228 #import <CFNetwork/CFURLCachePriv.h>
 229 #import <MobileGestalt.h>
 230 #import <WebCore/EventNames.h>
 231 #import <WebCore/FontCache.h>
 232 #import <WebCore/GraphicsLayer.h>
 233 #import <WebCore/IconController.h>
 234 #import <WebCore/LegacyTileCache.h>
 235 #import <WebCore/NetworkStateNotifier.h>
 236 #import <WebCore/RuntimeApplicationChecksIOS.h>
 237 #import <WebCore/SQLiteDatabaseTracker.h>
 238 #import <WebCore/SmartReplace.h>
 239 #import <WebCore/TextRun.h>
 240 #import <WebCore/TileControllerMemoryHandlerIOS.h>
 241 #import <WebCore/WAKWindow.h>
 242 #import <WebCore/WKView.h>
 243 #import <WebCore/WebCoreThread.h>
 244 #import <WebCore/WebCoreThreadMessage.h>
 245 #import <WebCore/WebCoreThreadRun.h>
 246 #import <WebCore/WebEvent.h>
 247 #import <WebCore/WebVideoFullscreenControllerAVKit.h>
 248 #import <dispatch/private.h>
 249 #import <wtf/FastMalloc.h>
 250 #endif // !PLATFORM(IOS)
 251
 252 #if ENABLE(DASHBOARD_SUPPORT)
 253 #import <WebKitLegacy/WebDashboardRegion.h>
 254 #endif
 255
 256 #if ENABLE(DISK_IMAGE_CACHE) && PLATFORM(IOS)
 257 #import "WebDiskImageCacheClientIOS.h"
 258 #import <WebCore/DiskImageCacheIOS.h>
 259 #endif
 260
 261 #if ENABLE(REMOTE_INSPECTOR)
 262 #import <JavaScriptCore/RemoteInspector.h>
 263 #if PLATFORM(IOS)
 264 #import "WebIndicateLayer.h"
 265 #endif
 266 #endif
 267
 268 #if USE(GLIB)
 269 #import <glib.h>
 270 #endif
 271
 272 #if USE(QUICK_LOOK)
 273 #include <WebCore/QuickLook.h>
 274 #endif
 275
 276 #if ENABLE(TOUCH_EVENTS)
 277 #import <WebCore/WebEventRegion.h>
 278 #endif
 279
 280 #if ENABLE(DISK_IMAGE_CACHE)
 281 #import "WebDiskImageCacheClientIOS.h"
 282 #import <WebCore/DiskImageCacheIOS.h>
 283 #endif
 284
 285 #if !PLATFORM(IOS)
 286 @interface NSSpellChecker (WebNSSpellCheckerDetails)
 287 - (void)_preflightChosenSpellServer;
 288 @end
 289
 290 @interface NSView (WebNSViewDetails)
 291 - (NSView *)_hitTest:(NSPoint *)aPoint dragTypes:(NSSet *)types;
 292 - (void)_autoscrollForDraggingInfo:(id)dragInfo timeDelta:(NSTimeInterval)repeatDelta;
 293 - (BOOL)_shouldAutoscrollForDraggingInfo:(id)dragInfo;
 294 @end
 295
 296 @interface NSWindow (WebNSWindowDetails)
 297 - (id)_oldFirstResponderBeforeBecoming;
 298 - (void)_enableScreenUpdatesIfNeeded;
 299 - (BOOL)_wrapsCarbonWindow;
 300 - (BOOL)_hasKeyAppearance;
 301 @end
 302 #endif
 303
 304 using namespace JSC;
 305 using namespace Inspector;
 306 using namespace WebCore;
 307
 308 #define FOR_EACH_RESPONDER_SELECTOR(macro) \
 309 macro(alignCenter) \
 310 macro(alignJustified) \
 311 macro(alignLeft) \
 312 macro(alignRight) \
 313 macro(capitalizeWord) \
 314 macro(centerSelectionInVisibleArea) \
 315 macro(changeAttributes) \
 316 macro(changeBaseWritingDirection) \
 317 macro(changeBaseWritingDirectionToLTR) \
 318 macro(changeBaseWritingDirectionToRTL) \
 319 macro(changeColor) \
 320 macro(changeDocumentBackgroundColor) \
 321 macro(changeFont) \
 322 macro(changeSpelling) \
 323 macro(checkSpelling) \
 324 macro(complete) \
 325 macro(copy) \
 326 macro(copyFont) \
 327 macro(cut) \
 328 macro(delete) \
 329 macro(deleteBackward) \
 330 macro(deleteBackwardByDecomposingPreviousCharacter) \
 331 macro(deleteForward) \
 332 macro(deleteToBeginningOfLine) \
 333 macro(deleteToBeginningOfParagraph) \
 334 macro(deleteToEndOfLine) \
 335 macro(deleteToEndOfParagraph) \
 336 macro(deleteToMark) \
 337 macro(deleteWordBackward) \
 338 macro(deleteWordForward) \
 339 macro(ignoreSpelling) \
 340 macro(indent) \
 341 macro(insertBacktab) \
 342 macro(insertLineBreak) \
 343 macro(insertNewline) \
 344 macro(insertNewlineIgnoringFieldEditor) \
 345 macro(insertParagraphSeparator) \
 346 macro(insertTab) \
 347 macro(insertTabIgnoringFieldEditor) \
 348 macro(lowercaseWord) \
 349 macro(makeBaseWritingDirectionLeftToRight) \
 350 macro(makeBaseWritingDirectionRightToLeft) \
 351 macro(makeTextWritingDirectionLeftToRight) \
 352 macro(makeTextWritingDirectionNatural) \
 353 macro(makeTextWritingDirectionRightToLeft) \
 354 macro(moveBackward) \
 355 macro(moveBackwardAndModifySelection) \
 356 macro(moveDown) \
 357 macro(moveDownAndModifySelection) \
 358 macro(moveForward) \
 359 macro(moveForwardAndModifySelection) \
 360 macro(moveLeft) \
 361 macro(moveLeftAndModifySelection) \
 362 macro(moveParagraphBackwardAndModifySelection) \
 363 macro(moveParagraphForwardAndModifySelection) \
 364 macro(moveRight) \
 365 macro(moveRightAndModifySelection) \
 366 macro(moveToBeginningOfDocument) \
 367 macro(moveToBeginningOfDocumentAndModifySelection) \
 368 macro(moveToBeginningOfLine) \
 369 macro(moveToBeginningOfLineAndModifySelection) \
 370 macro(moveToBeginningOfParagraph) \
 371 macro(moveToBeginningOfParagraphAndModifySelection) \
 372 macro(moveToBeginningOfSentence) \
 373 macro(moveToBeginningOfSentenceAndModifySelection) \
 374 macro(moveToEndOfDocument) \
 375 macro(moveToEndOfDocumentAndModifySelection) \
 376 macro(moveToEndOfLine) \
 377 macro(moveToEndOfLineAndModifySelection) \
 378 macro(moveToEndOfParagraph) \
 379 macro(moveToEndOfParagraphAndModifySelection) \
 380 macro(moveToEndOfSentence) \
 381 macro(moveToEndOfSentenceAndModifySelection) \
 382 macro(moveToLeftEndOfLine) \
 383 macro(moveToLeftEndOfLineAndModifySelection) \
 384 macro(moveToRightEndOfLine) \
 385 macro(moveToRightEndOfLineAndModifySelection) \
 386 macro(moveUp) \
 387 macro(moveUpAndModifySelection) \
 388 macro(moveWordBackward) \
 389 macro(moveWordBackwardAndModifySelection) \
 390 macro(moveWordForward) \
 391 macro(moveWordForwardAndModifySelection) \
 392 macro(moveWordLeft) \
 393 macro(moveWordLeftAndModifySelection) \
 394 macro(moveWordRight) \
 395 macro(moveWordRightAndModifySelection) \
 396 macro(orderFrontSubstitutionsPanel) \
 397 macro(outdent) \
 398 macro(overWrite) \
 399 macro(pageDown) \
 400 macro(pageDownAndModifySelection) \
 401 macro(pageUp) \
 402 macro(pageUpAndModifySelection) \
 403 macro(paste) \
 404 macro(pasteAsPlainText) \
 405 macro(pasteAsRichText) \
 406 macro(pasteFont) \
 407 macro(performFindPanelAction) \
 408 macro(scrollLineDown) \
 409 macro(scrollLineUp) \
 410 macro(scrollPageDown) \
 411 macro(scrollPageUp) \
 412 macro(scrollToBeginningOfDocument) \
 413 macro(scrollToEndOfDocument) \
 414 macro(selectAll) \
 415 macro(selectLine) \
 416 macro(selectParagraph) \
 417 macro(selectSentence) \
 418 macro(selectToMark) \
 419 macro(selectWord) \
 420 macro(setMark) \
 421 macro(showGuessPanel) \
 422 macro(startSpeaking) \
 423 macro(stopSpeaking) \
 424 macro(subscript) \
 425 macro(superscript) \
 426 macro(swapWithMark) \
 427 macro(takeFindStringFromSelection) \
 428 macro(toggleBaseWritingDirection) \
 429 macro(transpose) \
 430 macro(underline) \
 431 macro(unscript) \
 432 macro(uppercaseWord) \
 433 macro(yank) \
 434 macro(yankAndSelect) \
 435
 436 #define WebKitOriginalTopPrintingMarginKey @"WebKitOriginalTopMargin"
 437 #define WebKitOriginalBottomPrintingMarginKey @"WebKitOriginalBottomMargin"
 438
 439 #define KeyboardUIModeDidChangeNotification @"com.apple.KeyboardUIModeDidChange"
 440 #define AppleKeyboardUIMode CFSTR("AppleKeyboardUIMode")
 441
 442 static BOOL s_didSetCacheModel;
 443 static WebCacheModel s_cacheModel = WebCacheModelDocumentViewer;
 444
 445 #if PLATFORM(IOS)
 446 static Class s_pdfRepresentationClass;
 447 static Class s_pdfViewClass;
 448 #endif
 449
 450 #ifndef NDEBUG
 451 static const char webViewIsOpen[] = "At least one WebView is still open.";
 452 #endif
 453
 454 #if PLATFORM(IOS)
 455 @interface WebView(WebViewPrivate)
 456 - (void)_preferencesChanged:(WebPreferences *)preferences;
 457 - (void)_updateScreenScaleFromWindow;
 458 @end
 459
 460 @interface NSURLCache (WebPrivate)
 461 - (CFURLCacheRef)_CFURLCache;
 462 @end
 463 #endif
 464
 465 #if !PLATFORM(IOS)
 466 @interface NSObject (WebValidateWithoutDelegate)
 467 - (BOOL)validateUserInterfaceItemWithoutDelegate:(id <NSValidatedUserInterfaceItem>)item;
 468 @end
 469 #endif
 470
 471 #if PLATFORM(IOS)
 472 @class _WebSafeForwarder;
 473
 474 @interface _WebSafeAsyncForwarder : NSObject {
 475     _WebSafeForwarder *_forwarder;
 476 }
 477 - (id)initWithForwarder:(_WebSafeForwarder *)forwarder;
 478 @end
 479 #endif
 480
 481 @interface _WebSafeForwarder : NSObject
 482 {
 483     id target; // Non-retained. Don't retain delegates.
 484     id defaultTarget;
 485 #if PLATFORM(IOS)
 486     _WebSafeAsyncForwarder *asyncForwarder;
 487     dispatch_once_t asyncForwarderPred;
 488 #endif
 489 }
 490 - (instancetype)initWithTarget:(id)target defaultTarget:(id)defaultTarget;
 491 #if PLATFORM(IOS)
 492 - (void)clearTarget;
 493 - (id)asyncForwarder;
 494 #endif
 495 @end
 496
 497 FindOptions coreOptions(WebFindOptions options)
 498 {
 499     return (options & WebFindOptionsCaseInsensitive ? CaseInsensitive : 0)
 500         | (options & WebFindOptionsAtWordStarts ? AtWordStarts : 0)
 501         | (options & WebFindOptionsTreatMedialCapitalAsWordStart ? TreatMedialCapitalAsWordStart : 0)
 502         | (options & WebFindOptionsBackwards ? Backwards : 0)
 503         | (options & WebFindOptionsWrapAround ? WrapAround : 0)
 504         | (options & WebFindOptionsStartInSelection ? StartInSelection : 0);
 505 }
 506
 507 LayoutMilestones coreLayoutMilestones(WebLayoutMilestones milestones)
 508 {
 509     return (milestones & WebDidFirstLayout ? DidFirstLayout : 0)
 510         | (milestones & WebDidFirstVisuallyNonEmptyLayout ? DidFirstVisuallyNonEmptyLayout : 0)
 511         | (milestones & WebDidHitRelevantRepaintedObjectsAreaThreshold ? DidHitRelevantRepaintedObjectsAreaThreshold : 0);
 512 }
 513
 514 WebLayoutMilestones kitLayoutMilestones(LayoutMilestones milestones)
 515 {
 516     return (milestones & DidFirstLayout ? WebDidFirstLayout : 0)
 517         | (milestones & DidFirstVisuallyNonEmptyLayout ? WebDidFirstVisuallyNonEmptyLayout : 0)
 518         | (milestones & DidHitRelevantRepaintedObjectsAreaThreshold ? WebDidHitRelevantRepaintedObjectsAreaThreshold : 0);
 519 }
 520
 521 static WebPageVisibilityState kit(PageVisibilityState visibilityState)
 522 {
 523     switch (visibilityState) {
 524     case PageVisibilityStateVisible:
 525         return WebPageVisibilityStateVisible;
 526     case PageVisibilityStateHidden:
 527         return WebPageVisibilityStateHidden;
 528     case PageVisibilityStatePrerender:
 529         return WebPageVisibilityStatePrerender;
 530     }
 531
 532     ASSERT_NOT_REACHED();
 533     return WebPageVisibilityStateVisible;
 534 }
 535
 536 @interface WebView (WebFileInternal)
 537 #if !PLATFORM(IOS)
 538 - (float)_deviceScaleFactor;
 539 #endif
 540 - (BOOL)_isLoading;
 541 - (WebFrameView *)_frameViewAtWindowPoint:(NSPoint)point;
 542 - (WebFrame *)_focusedFrame;
 543 + (void)_preflightSpellChecker;
 544 - (BOOL)_continuousCheckingAllowed;
 545 - (NSResponder *)_responderForResponderOperations;
 546 #if USE(GLIB)
 547 - (void)_clearGlibLoopObserver;
 548 #endif
 549 @end
 550
 551 NSString *WebElementDOMNodeKey =            @"WebElementDOMNode";
 552 NSString *WebElementFrameKey =              @"WebElementFrame";
 553 NSString *WebElementImageKey =              @"WebElementImage";
 554 NSString *WebElementImageAltStringKey =     @"WebElementImageAltString";
 555 NSString *WebElementImageRectKey =          @"WebElementImageRect";
 556 NSString *WebElementImageURLKey =           @"WebElementImageURL";
 557 NSString *WebElementIsSelectedKey =         @"WebElementIsSelected";
 558 NSString *WebElementLinkLabelKey =          @"WebElementLinkLabel";
 559 NSString *WebElementLinkTargetFrameKey =    @"WebElementTargetFrame";
 560 NSString *WebElementLinkTitleKey =          @"WebElementLinkTitle";
 561 NSString *WebElementLinkURLKey =            @"WebElementLinkURL";
 562 NSString *WebElementMediaURLKey =           @"WebElementMediaURL";
 563 NSString *WebElementSpellingToolTipKey =    @"WebElementSpellingToolTip";
 564 NSString *WebElementTitleKey =              @"WebElementTitle";
 565 NSString *WebElementLinkIsLiveKey =         @"WebElementLinkIsLive";
 566 NSString *WebElementIsInScrollBarKey =      @"WebElementIsInScrollBar";
 567 NSString *WebElementIsContentEditableKey =  @"WebElementIsContentEditableKey";
 568
 569 NSString *WebViewProgressStartedNotification =          @"WebProgressStartedNotification";
 570 NSString *WebViewProgressEstimateChangedNotification =  @"WebProgressEstimateChangedNotification";
 571 #if !PLATFORM(IOS)
 572 NSString *WebViewProgressFinishedNotification =         @"WebProgressFinishedNotification";
 573 #else
 574 NSString * const WebViewProgressEstimatedProgressKey = @"WebProgressEstimatedProgressKey";
 575 NSString * const WebViewProgressBackgroundColorKey =   @"WebProgressBackgroundColorKey";
 576 #endif
 577
 578 NSString * const WebViewDidBeginEditingNotification =         @"WebViewDidBeginEditingNotification";
 579 NSString * const WebViewDidChangeNotification =               @"WebViewDidChangeNotification";
 580 NSString * const WebViewDidEndEditingNotification =           @"WebViewDidEndEditingNotification";
 581 NSString * const WebViewDidChangeTypingStyleNotification =    @"WebViewDidChangeTypingStyleNotification";
 582 NSString * const WebViewDidChangeSelectionNotification =      @"WebViewDidChangeSelectionNotification";
 583
 584 enum { WebViewVersion = 4 };
 585
 586 #define timedLayoutSize 4096
 587
 588 static NSMutableSet *schemesWithRepresentationsSet;
 589
 590 #if !PLATFORM(IOS)
 591 NSString *_WebCanGoBackKey =            @"canGoBack";
 592 NSString *_WebCanGoForwardKey =         @"canGoForward";
 593 NSString *_WebEstimatedProgressKey =    @"estimatedProgress";
 594 NSString *_WebIsLoadingKey =            @"isLoading";
 595 NSString *_WebMainFrameIconKey =        @"mainFrameIcon";
 596 NSString *_WebMainFrameTitleKey =       @"mainFrameTitle";
 597 NSString *_WebMainFrameURLKey =         @"mainFrameURL";
 598 NSString *_WebMainFrameDocumentKey =    @"mainFrameDocument";
 599 #endif
 600
 601 #if USE(QUICK_LOOK)
 602 NSString *WebQuickLookFileNameKey = @"WebQuickLookFileNameKey";
 603 NSString *WebQuickLookUTIKey      = @"WebQuickLookUTIKey";
 604 #endif
 605
 606 NSString *_WebViewDidStartAcceleratedCompositingNotification = @"_WebViewDidStartAcceleratedCompositing";
 607 NSString * const WebViewWillCloseNotification = @"WebViewWillCloseNotification";
 608
 609 #if ENABLE(REMOTE_INSPECTOR)
 610 // FIXME: Legacy, remove this, switch to something from JavaScriptCore Inspector::RemoteInspectorServer.
 611 NSString *_WebViewRemoteInspectorHasSessionChangedNotification = @"_WebViewRemoteInspectorHasSessionChangedNotification";
 612 #endif
 613
 614 NSString *WebKitKerningAndLigaturesEnabledByDefaultDefaultsKey = @"WebKitKerningAndLigaturesEnabledByDefault";
 615
 616 @interface WebProgressItem : NSObject
 617 {
 618 @public
 619     long long bytesReceived;
 620     long long estimatedLength;
 621 }
 622 @end
 623
 624 @implementation WebProgressItem
 625 @end
 626
 627 static BOOL continuousSpellCheckingEnabled;
 628 #if !PLATFORM(IOS)
 629 static BOOL grammarCheckingEnabled;
 630 static BOOL automaticQuoteSubstitutionEnabled;
 631 static BOOL automaticLinkDetectionEnabled;
 632 static BOOL automaticDashSubstitutionEnabled;
 633 static BOOL automaticTextReplacementEnabled;
 634 static BOOL automaticSpellingCorrectionEnabled;
 635 #endif
 636
 637 @implementation WebView (AllWebViews)
 638
 639 static CFSetCallBacks NonRetainingSetCallbacks = {
 640     0,
 641     NULL,
 642     NULL,
 643     CFCopyDescription,
 644     CFEqual,
 645     CFHash
 646 };
 647
 648 static CFMutableSetRef allWebViewsSet;
 649
 650 + (void)_makeAllWebViewsPerformSelector:(SEL)selector
 651 {
 652     if (!allWebViewsSet)
 653         return;
 654
 655     [(NSMutableSet *)allWebViewsSet makeObjectsPerformSelector:selector];
 656 }
 657
 658 - (void)_removeFromAllWebViewsSet
 659 {
 660     if (allWebViewsSet)
 661         CFSetRemoveValue(allWebViewsSet, self);
 662 }
 663
 664 - (void)_addToAllWebViewsSet
 665 {
 666     if (!allWebViewsSet)
 667         allWebViewsSet = CFSetCreateMutable(NULL, 0, &NonRetainingSetCallbacks);
 668
 669     CFSetSetValue(allWebViewsSet, self);
 670 }
 671
 672 @end
 673
 674 @implementation WebView (WebPrivate)
 675
 676 static String userVisibleWebKitVersionString()
 677 {
 678     // If the version is longer than 3 digits then the leading digits represent the version of the OS. Our user agent
 679     // string should not include the leading digits, so strip them off and report the rest as the version. <rdar://problem/4997547>
 680     NSString *fullVersion = [[NSBundle bundleForClass:[WebView class]] objectForInfoDictionaryKey:(NSString *)kCFBundleVersionKey];
 681     NSRange nonDigitRange = [fullVersion rangeOfCharacterFromSet:[[NSCharacterSet decimalDigitCharacterSet] invertedSet]];
 682     if (nonDigitRange.location == NSNotFound && fullVersion.length > 3)
 683         return [fullVersion substringFromIndex:fullVersion.length - 3];
 684     if (nonDigitRange.location != NSNotFound && nonDigitRange.location > 3)
 685         return [fullVersion substringFromIndex:nonDigitRange.location - 3];
 686     return fullVersion;
 687 }
 688
 689 + (NSString *)_standardUserAgentWithApplicationName:(NSString *)applicationName
 690 {
 691     return standardUserAgentWithApplicationName(applicationName, userVisibleWebKitVersionString());
 692 }
 693
 694 #if PLATFORM(IOS)
 695 - (void)_setBrowserUserAgentProductVersion:(NSString *)productVersion buildVersion:(NSString *)buildVersion bundleVersion:(NSString *)bundleVersion
 696 {
 697     [self setApplicationNameForUserAgent:[NSString stringWithFormat:@"Version/%@ Mobile/%@ Safari/%@", productVersion, buildVersion, bundleVersion]];
 698 }
 699
 700 - (void)_setUIWebViewUserAgentWithBuildVersion:(NSString *)buildVersion
 701 {
 702     [self setApplicationNameForUserAgent:[@"Mobile/" stringByAppendingString:buildVersion]];
 703 }
 704 #endif // PLATFORM(IOS)
 705
 706 + (void)_reportException:(JSValueRef)exception inContext:(JSContextRef)context
 707 {
 708     if (!exception || !context)
 709         return;
 710
 711     JSC::ExecState* execState = toJS(context);
 712     JSLockHolder lock(execState);
 713
 714     // Make sure the context has a DOMWindow global object, otherwise this context didn't originate from a WebView.
 715     if (!toJSDOMWindow(execState->lexicalGlobalObject()))
 716         return;
 717
 718     reportException(execState, toJS(execState, exception));
 719 }
 720
 721 static void WebKitInitializeApplicationCachePathIfNecessary()
 722 {
 723     static BOOL initialized = NO;
 724     if (initialized)
 725         return;
 726
 727     NSString *appName = [[NSBundle mainBundle] bundleIdentifier];
 728     if (!appName)
 729         appName = [[NSProcessInfo processInfo] processName];
 730 #if PLATFORM(IOS)
 731     if (WebCore::applicationIsMobileSafari() || WebCore::applicationIsWebApp())
 732         appName = @"com.apple.WebAppCache";
 733 #endif
 734
 735     ASSERT(appName);
 736
 737     NSString* cacheDir = [NSString _webkit_localCacheDirectoryWithBundleIdentifier:appName];
 738
 739     cacheStorage().setCacheDirectory(cacheDir);
 740     initialized = YES;
 741 }
 742
 743 static bool shouldEnableLoadDeferring()
 744 {
 745     return !applicationIsAdobeInstaller();
 746 }
 747
 748 static bool shouldRestrictWindowFocus()
 749 {
 750 #if PLATFORM(IOS)
 751     return true;
 752 #else
 753     return !applicationIsHRBlock();
 754 #endif
 755 }
 756
 757 - (void)_dispatchPendingLoadRequests
 758 {
 759     resourceLoadScheduler()->servePendingRequests();
 760 }
 761
 762 #if !PLATFORM(IOS)
 763 - (void)_registerDraggedTypes
 764 {
 765     NSArray *editableTypes = [WebHTMLView _insertablePasteboardTypes];
 766     NSArray *URLTypes = [NSPasteboard _web_dragTypesForURL];
 767     NSMutableSet *types = [[NSMutableSet alloc] initWithArray:editableTypes];
 768     [types addObjectsFromArray:URLTypes];
 769     [self registerForDraggedTypes:[types allObjects]];
 770     [types release];
 771 }
 772
 773 static bool needsOutlookQuirksScript()
 774 {
 775     static bool isOutlookNeedingQuirksScript = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_HTML5_PARSER)
 776         && applicationIsMicrosoftOutlook();
 777     return isOutlookNeedingQuirksScript;
 778 }
 779
 780 static NSString *leakOutlookQuirksUserScriptContents()
 781 {
 782     NSString *scriptPath = [[NSBundle bundleForClass:[WebView class]] pathForResource:@"OutlookQuirksUserScript" ofType:@"js"];
 783     NSStringEncoding encoding;
 784     return [[NSString alloc] initWithContentsOfFile:scriptPath usedEncoding:&encoding error:0];
 785 }
 786
 787 -(void)_injectOutlookQuirksScript
 788 {
 789     static NSString *outlookQuirksScriptContents = leakOutlookQuirksUserScriptContents();
 790     core(self)->group().addUserScriptToWorld(*core([WebScriptWorld world]),
 791         outlookQuirksScriptContents, URL(), Vector<String>(), Vector<String>(), InjectAtDocumentEnd, InjectInAllFrames);
 792 }
 793 #endif
 794
 795 static bool shouldRespectPriorityInCSSAttributeSetters()
 796 {
 797 #if PLATFORM(IOS)
 798     static bool isStanzaNeedingAttributeSetterQuirk = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_CSS_ATTRIBUTE_SETTERS_IGNORING_PRIORITY)
 799         && [[[NSBundle mainBundle] bundleIdentifier] isEqualToString:@"com.lexcycle.stanza"];
 800     return isStanzaNeedingAttributeSetterQuirk;
 801 #else
 802     static bool isIAdProducerNeedingAttributeSetterQuirk = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_CSS_ATTRIBUTE_SETTERS_IGNORING_PRIORITY)
 803         && [[[NSBundle mainBundle] bundleIdentifier] isEqualToString:@"com.apple.iAdProducer"];
 804     return isIAdProducerNeedingAttributeSetterQuirk;
 805 #endif
 806 }
 807
 808 #if PLATFORM(IOS)
 809 static bool shouldTransformsAffectOverflow()
 810 {
 811     static bool shouldTransformsAffectOverflow = !applicationIsOkCupid() || WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_CSS_TRANSFORMS_AFFECTING_OVERFLOW);
 812     return shouldTransformsAffectOverflow;
 813 }
 814
 815 static bool shouldDispatchJavaScriptWindowOnErrorEvents()
 816 {
 817     static bool shouldDispatchJavaScriptWindowOnErrorEvents = !applicationIsFacebook() || WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_WINDOW_ON_ERROR);
 818     return shouldDispatchJavaScriptWindowOnErrorEvents;
 819 }
 820
 821 static bool isInternalInstall()
 822 {
 823     static bool isInternal = MGGetBoolAnswer(kMGQAppleInternalInstallCapability);
 824     return isInternal;
 825 }
 826
 827 static bool didOneTimeInitialization = false;
 828 #endif
 829
 830 static bool shouldUseLegacyBackgroundSizeShorthandBehavior()
 831 {
 832 #if PLATFORM(IOS)
 833     static bool shouldUseLegacyBackgroundSizeShorthandBehavior = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITHOUT_LEGACY_BACKGROUNDSIZE_SHORTHAND_BEHAVIOR);
 834 #else
 835     static bool shouldUseLegacyBackgroundSizeShorthandBehavior = applicationIsVersions()
 836         && !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITHOUT_LEGACY_BACKGROUNDSIZE_SHORTHAND_BEHAVIOR);
 837 #endif
 838     return shouldUseLegacyBackgroundSizeShorthandBehavior;
 839 }
 840
 841 - (void)_commonInitializationWithFrameName:(NSString *)frameName groupName:(NSString *)groupName
 842 {
 843     WebCoreThreadViolationCheckRoundTwo();
 844
 845 #ifndef NDEBUG
 846     WTF::RefCountedLeakCounter::suppressMessages(webViewIsOpen);
 847 #endif
 848
 849     WebPreferences *standardPreferences = [WebPreferences standardPreferences];
 850     [standardPreferences willAddToWebView];
 851
 852     _private->preferences = [standardPreferences retain];
 853     _private->mainFrameDocumentReady = NO;
 854     _private->drawsBackground = YES;
 855 #if !PLATFORM(IOS)
 856     _private->backgroundColor = [[NSColor colorWithDeviceWhite:1 alpha:1] retain];
 857 #else
 858     _private->backgroundColor = CGColorRetain(cachedCGColor(Color::white, ColorSpaceDeviceRGB));
 859 #endif
 860     _private->includesFlattenedCompositingLayersWhenDrawingToBitmap = YES;
 861
 862     NSRect f = [self frame];
 863     WebFrameView *frameView = [[WebFrameView alloc] initWithFrame: NSMakeRect(0,0,f.size.width,f.size.height)];
 864     [frameView setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
 865     [self addSubview:frameView];
 866     [frameView release];
 867
 868 #if !PLATFORM(IOS)
 869     static bool didOneTimeInitialization = false;
 870 #endif
 871     if (!didOneTimeInitialization) {
 872 #if !LOG_DISABLED
 873         WebKitInitializeLoggingChannelsIfNecessary();
 874         WebCore::initializeLoggingChannelsIfNecessary();
 875 #endif // !LOG_DISABLED
 876
 877         // Initialize our platform strategies first before invoking the rest
 878         // of the initialization code which may depend on the strategies.
 879         WebPlatformStrategies::initializeIfNecessary();
 880
 881 #if ENABLE(SQL_DATABASE)
 882 #if PLATFORM(IOS)
 883         // Set the WebSQLiteDatabaseTrackerClient.
 884         SQLiteDatabaseTracker::setClient(WebSQLiteDatabaseTrackerClient::sharedWebSQLiteDatabaseTrackerClient());
 885
 886         if ([standardPreferences databasesEnabled])
 887 #endif
 888         [WebDatabaseManager sharedWebDatabaseManager];
 889 #endif
 890
 891 #if PLATFORM(IOS)
 892         if ([standardPreferences storageTrackerEnabled])
 893 #endif
 894         WebKitInitializeStorageIfNecessary();
 895         WebKitInitializeApplicationCachePathIfNecessary();
 896 #if ENABLE(DISK_IMAGE_CACHE) && PLATFORM(IOS)
 897         WebKitInitializeWebDiskImageCache();
 898 #endif
 899
 900         Settings::setDefaultMinDOMTimerInterval(0.004);
 901
 902         Settings::setShouldRespectPriorityInCSSAttributeSetters(shouldRespectPriorityInCSSAttributeSetters());
 903
 904 #if PLATFORM(IOS)
 905         if (applicationIsMobileSafari())
 906             Settings::setShouldManageAudioSessionCategory(true);
 907 #endif
 908
 909         didOneTimeInitialization = true;
 910     }
 911
 912     Page::PageClients pageClients;
 913 #if !PLATFORM(IOS)
 914     pageClients.chromeClient = new WebChromeClient(self);
 915     pageClients.contextMenuClient = new WebContextMenuClient(self);
 916 #if ENABLE(DRAG_SUPPORT)
 917     pageClients.dragClient = new WebDragClient(self);
 918 #endif
 919     pageClients.inspectorClient = new WebInspectorClient(self);
 920 #else
 921     pageClients.chromeClient = new WebChromeClientIOS(self);
 922     pageClients.inspectorClient = new WebInspectorClient(self);
 923 #endif
 924     pageClients.editorClient = new WebEditorClient(self);
 925     pageClients.alternativeTextClient = new WebAlternativeTextClient(self);
 926     pageClients.loaderClientForMainFrame = new WebFrameLoaderClient;
 927     pageClients.progressTrackerClient = new WebProgressTrackerClient(self);
 928     _private->page = new Page(pageClients);
 929 #if ENABLE(GEOLOCATION)
 930     WebCore::provideGeolocationTo(_private->page, new WebGeolocationClient(self));
 931 #endif
 932 #if ENABLE(NOTIFICATIONS) || ENABLE(LEGACY_NOTIFICATIONS)
 933     WebCore::provideNotification(_private->page, new WebNotificationClient(self));
 934 #endif
 935 #if ENABLE(DEVICE_ORIENTATION)
 936 #if !PLATFORM(IOS)
 937     WebCore::provideDeviceOrientationTo(_private->page, new WebDeviceOrientationClient(self));
 938 #endif
 939 #endif
 940 #if ENABLE(MEDIA_STREAM)
 941     WebCore::provideUserMediaTo(_private->page, new WebUserMediaClient(self));
 942 #endif
 943
 944 #if ENABLE(REMOTE_INSPECTOR)
 945     _private->page->setRemoteInspectionAllowed(true);
 946 #endif
 947
 948     _private->page->setCanStartMedia([self window]);
 949     _private->page->settings().setLocalStorageDatabasePath([[self preferences] _localStorageDatabasePath]);
 950     _private->page->settings().setUseLegacyBackgroundSizeShorthandBehavior(shouldUseLegacyBackgroundSizeShorthandBehavior());
 951
 952 #if !PLATFORM(IOS)
 953     if (needsOutlookQuirksScript()) {
 954         _private->page->settings().setShouldInjectUserScriptsInInitialEmptyDocument(true);
 955         [self _injectOutlookQuirksScript];
 956     }
 957 #endif
 958
 959 #if PLATFORM(IOS)
 960     // Preserve the behavior we had before <rdar://problem/7580867>
 961     // by enforcing a 5MB limit for session storage.
 962     _private->page->settings().setSessionStorageQuota(5 * 1024 * 1024);
 963
 964     [self _updateScreenScaleFromWindow];
 965     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_wakWindowScreenScaleChanged:) name:WAKWindowScreenScaleDidChangeNotification object:nil];
 966     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_wakWindowVisibilityChanged:) name:WAKWindowVisibilityDidChangeNotification object:nil];
 967     _private->_fixedPositionContent = [[WebFixedPositionContent alloc] initWithWebView:self];
 968 #endif
 969
 970     if ([[NSUserDefaults standardUserDefaults] objectForKey:WebSmartInsertDeleteEnabled])
 971         [self setSmartInsertDeleteEnabled:[[NSUserDefaults standardUserDefaults] boolForKey:WebSmartInsertDeleteEnabled]];
 972
 973     [WebFrame _createMainFrameWithPage:_private->page frameName:frameName frameView:frameView];
 974
 975 #if !PLATFORM(IOS)
 976     NSRunLoop *runLoop = [NSRunLoop mainRunLoop];
 977
 978     if (WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_LOADING_DURING_COMMON_RUNLOOP_MODES))
 979         [self scheduleInRunLoop:runLoop forMode:(NSString *)kCFRunLoopCommonModes];
 980     else
 981         [self scheduleInRunLoop:runLoop forMode:NSDefaultRunLoopMode];
 982 #endif
 983
 984     [self _addToAllWebViewsSet];
 985     [self setGroupName:groupName];
 986
 987     // If there's already a next key view (e.g., from a nib), wire it up to our
 988     // contained frame view. In any case, wire our next key view up to the our
 989     // contained frame view. This works together with our becomeFirstResponder
 990     // and setNextKeyView overrides.
 991     NSView *nextKeyView = [self nextKeyView];
 992     if (nextKeyView && nextKeyView != frameView)
 993         [frameView setNextKeyView:nextKeyView];
 994     [super setNextKeyView:frameView];
 995
 996     if ([[self class] shouldIncludeInWebKitStatistics])
 997         ++WebViewCount;
 998
 999 #if !PLATFORM(IOS)
1000     [self _registerDraggedTypes];
1001 #endif
1002
1003     [self _setIsVisible:[self _isViewVisible]];
1004
1005     WebPreferences *prefs = [self preferences];
1006     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_preferencesChangedNotification:)
1007                                                  name:WebPreferencesChangedInternalNotification object:prefs];
1008
1009 #if !PLATFORM(IOS)
1010     [self _preferencesChanged:[self preferences]];
1011     [[self preferences] _postPreferencesChangedAPINotification];
1012 #else
1013     // do this on the current thread on iOS, since the web thread could be blocked on the main thread,
1014     // and prefs need to be changed synchronously <rdar://problem/5841558>
1015     [self _preferencesChanged:prefs];
1016     _private->page->settings().setFontFallbackPrefersPictographs(true);
1017 #endif
1018
1019     memoryPressureHandler().install();
1020
1021     if (!WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_LOCAL_RESOURCE_SECURITY_RESTRICTION)) {
1022         // Originally, we allowed all local loads.
1023         SecurityPolicy::setLocalLoadPolicy(SecurityPolicy::AllowLocalLoadsForAll);
1024     } else if (!WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_MORE_STRICT_LOCAL_RESOURCE_SECURITY_RESTRICTION)) {
1025         // Later, we allowed local loads for local URLs and documents loaded
1026         // with substitute data.
1027         SecurityPolicy::setLocalLoadPolicy(SecurityPolicy::AllowLocalLoadsForLocalAndSubstituteData);
1028     }
1029
1030 #if !PLATFORM(IOS)
1031     if (!WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITHOUT_CONTENT_SNIFFING_FOR_FILE_URLS))
1032         ResourceHandle::forceContentSniffing();
1033 #endif
1034
1035 #if USE(GLIB)
1036     [self _scheduleGlibContextIterations];
1037 #endif
1038 }
1039
1040 - (id)_initWithFrame:(NSRect)f frameName:(NSString *)frameName groupName:(NSString *)groupName usesDocumentViews:(BOOL)usesDocumentViews
1041 {
1042     // FIXME: Remove the usesDocumentViews parameter; it's only here for compatibility with WebKit nightly builds
1043     // running against Safari 5 on Leopard.
1044     ASSERT(usesDocumentViews);
1045
1046     self = [super initWithFrame:f];
1047     if (!self)
1048         return nil;
1049
1050 #ifdef ENABLE_WEBKIT_UNSET_DYLD_FRAMEWORK_PATH
1051     // DYLD_FRAMEWORK_PATH is used so Safari will load the development version of WebKit, which
1052     // may not work with other WebKit applications.  Unsetting DYLD_FRAMEWORK_PATH removes the
1053     // need for Safari to unset it to prevent it from being passed to applications it launches.
1054     // Unsetting it when a WebView is first created is as good a place as any.
1055     // See <http://bugs.webkit.org/show_bug.cgi?id=4286> for more details.
1056     if (getenv("WEBKIT_UNSET_DYLD_FRAMEWORK_PATH")) {
1057         unsetenv("DYLD_FRAMEWORK_PATH");
1058         unsetenv("WEBKIT_UNSET_DYLD_FRAMEWORK_PATH");
1059     }
1060 #endif
1061
1062     _private = [[WebViewPrivate alloc] init];
1063     [self _commonInitializationWithFrameName:frameName groupName:groupName];
1064     [self setMaintainsBackForwardList: YES];
1065 #if !PLATFORM(IOS)
1066     _private->page->setDeviceScaleFactor([self _deviceScaleFactor]);
1067 #endif
1068     return self;
1069 }
1070
1071 - (void)_viewWillDrawInternal
1072 {
1073     Frame* frame = [self _mainCoreFrame];
1074     if (frame && frame->view())
1075         frame->view()->updateLayoutAndStyleIfNeededRecursive();
1076 }
1077
1078 + (NSArray *)_supportedMIMETypes
1079 {
1080     // Load the plug-in DB allowing plug-ins to install types.
1081     [WebPluginDatabase sharedDatabase];
1082     return [[WebFrameView _viewTypesAllowImageTypeOmission:NO] allKeys];
1083 }
1084
1085 #if !PLATFORM(IOS)
1086 + (NSArray *)_supportedFileExtensions
1087 {
1088     NSMutableSet *extensions = [[NSMutableSet alloc] init];
1089     NSArray *MIMETypes = [self _supportedMIMETypes];
1090     NSEnumerator *enumerator = [MIMETypes objectEnumerator];
1091     NSString *MIMEType;
1092     while ((MIMEType = [enumerator nextObject]) != nil) {
1093         NSArray *extensionsForType = WKGetExtensionsForMIMEType(MIMEType);
1094         if (extensionsForType) {
1095             [extensions addObjectsFromArray:extensionsForType];
1096         }
1097     }
1098     NSArray *uniqueExtensions = [extensions allObjects];
1099     [extensions release];
1100     return uniqueExtensions;
1101 }
1102 #endif
1103
1104 #if PLATFORM(IOS)
1105 + (void)enableWebThread
1106 {
1107     static BOOL isWebThreadEnabled = NO;
1108     if (!isWebThreadEnabled) {
1109         WebCoreObjCDeallocOnWebThread([WebBasePluginPackage class]);
1110         WebCoreObjCDeallocOnWebThread([WebDataSource class]);
1111         WebCoreObjCDeallocOnWebThread([WebFrame class]);
1112         WebCoreObjCDeallocOnWebThread([WebHTMLView class]);
1113         WebCoreObjCDeallocOnWebThread([WebHistoryItem class]);
1114         WebCoreObjCDeallocOnWebThread([WebPlainWhiteView class]);
1115         WebCoreObjCDeallocOnWebThread([WebPolicyDecisionListener class]);
1116         WebCoreObjCDeallocOnWebThread([WebView class]);
1117         WebCoreObjCDeallocOnWebThread([WebVisiblePosition class]);
1118         if (applicationIsTheEconomistOnIPhone() && !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_DELEGATE_CALLS_IN_COMMON_RUNLOOP_MODES))
1119             WebThreadSetDelegateSourceRunLoopMode(kCFRunLoopDefaultMode);
1120         WebThreadEnable();
1121         isWebThreadEnabled = YES;
1122     }
1123 }
1124
1125 - (id)initSimpleHTMLDocumentWithStyle:(NSString *)style frame:(CGRect)frame preferences:(WebPreferences *)preferences groupName:(NSString *)groupName
1126 {
1127     self = [super initWithFrame:frame];
1128     if (!self)
1129         return nil;
1130
1131     _private = [[WebViewPrivate alloc] init];
1132
1133 #ifndef NDEBUG
1134     WTF::RefCountedLeakCounter::suppressMessages(webViewIsOpen);
1135 #endif
1136
1137     if (!preferences)
1138         preferences = [WebPreferences standardPreferences];
1139     [preferences willAddToWebView];
1140
1141     _private->preferences = [preferences retain];
1142     _private->mainFrameDocumentReady = NO;
1143     _private->drawsBackground = YES;
1144     _private->backgroundColor = CGColorRetain(cachedCGColor(Color::white, ColorSpaceDeviceRGB));
1145
1146     WebFrameView *frameView = nil;
1147     frameView = [[WebFrameView alloc] initWithFrame: CGRectMake(0,0,frame.size.width,frame.size.height)];
1148     [frameView setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
1149     [self addSubview:frameView];
1150     [frameView release];
1151
1152
1153     Page::PageClients pageClients;
1154     pageClients.chromeClient = new WebChromeClientIOS(self);
1155 #if ENABLE(DRAG_SUPPORT)
1156     pageClients.dragClient = new WebDragClient(self);
1157 #endif
1158     pageClients.editorClient = new WebEditorClient(self);
1159     pageClients.inspectorClient = new WebInspectorClient(self);
1160     pageClients.loaderClientForMainFrame = new WebFrameLoaderClient;
1161     pageClients.progressTrackerClient = new WebProgressTrackerClient(self);
1162     _private->page = new Page(pageClients);
1163
1164     [self setSmartInsertDeleteEnabled:YES];
1165
1166     // FIXME: <rdar://problem/6851451> Should respect preferences in fast path WebView initialization
1167     // We are ignoring the preferences object on fast path and just using Settings defaults (everything fancy off).
1168     // This matches how UIKit sets up the preferences. We need to set  default values for fonts though, <rdar://problem/6850611>.
1169     // This should be revisited later. There is some risk involved, _preferencesChanged used to show up badly in Shark.
1170     _private->page->settings().setMinimumLogicalFontSize(9);
1171     _private->page->settings().setDefaultFontSize([_private->preferences defaultFontSize]);
1172     _private->page->settings().setDefaultFixedFontSize(13);
1173     _private->page->settings().setDownloadableBinaryFontsEnabled(false);
1174     _private->page->settings().setAcceleratedDrawingEnabled([preferences acceleratedDrawingEnabled]);
1175     _private->page->settings().setScreenFontSubstitutionEnabled(false);
1176
1177     // FIXME: <rdar://problem/7394370> Always use primary font baseline in text field base line calculation, ignore fallback fonts.
1178     _private->page->settings().setAlwaysUseBaselineOfPrimaryFont([preferences _alwaysUseBaselineOfPrimaryFont]);
1179
1180     _private->page->settings().setFontFallbackPrefersPictographs(true);
1181     _private->page->settings().setPictographFontFamily("AppleColorEmoji");
1182
1183     // FIXME: this is a workaround for <rdar://problem/11518688> REGRESSION: Quoted text font changes when replying to certain email
1184     _private->page->settings().setStandardFontFamily([_private->preferences standardFontFamily]);
1185
1186     // FIXME: this is a workaround for <rdar://problem/11820090> Quoted text changes in size when replying to certain email
1187     _private->page->settings().setMinimumFontSize([_private->preferences minimumFontSize]);
1188
1189     [self setGroupName:groupName];
1190
1191 #if ENABLE(REMOTE_INSPECTOR)
1192     // Production installs always disallow debugging simple HTML documents.
1193     // Internal installs allow debugging simple HTML documents (TextFields) if the Internal Setting is enabled.
1194     if (!isInternalInstall())
1195         _private->page->setRemoteInspectionAllowed(false);
1196     else {
1197         static BOOL textFieldInspectionEnabled = [[NSUserDefaults standardUserDefaults] boolForKey:WebKitTextFieldRemoteInspectionEnabledPreferenceKey];
1198         _private->page->setRemoteInspectionAllowed(textFieldInspectionEnabled);
1199     }
1200 #endif
1201
1202     [self _updateScreenScaleFromWindow];
1203     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_wakWindowScreenScaleChanged:) name:WAKWindowScreenScaleDidChangeNotification object:nil];
1204     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_wakWindowVisibilityChanged:) name:WAKWindowVisibilityDidChangeNotification object:nil];
1205
1206     [WebFrame _createMainFrameWithSimpleHTMLDocumentWithPage:_private->page frameView:frameView style:style];
1207
1208     [self _addToAllWebViewsSet];
1209
1210     ++WebViewCount;
1211
1212     SecurityPolicy::setLocalLoadPolicy(SecurityPolicy::AllowLocalLoadsForLocalAndSubstituteData);
1213
1214     return self;
1215 }
1216
1217 + (void)_handleMemoryWarning
1218 {
1219     ASSERT(WebThreadIsCurrent());
1220     WebKit::MemoryMeasure totalMemory("Memory warning: Overall memory change from [WebView _handleMemoryWarning].");
1221
1222     // Always peform the following.
1223     [WebView purgeInactiveFontData];
1224
1225     // Only perform the remaining if a non-simple document was created.
1226     if (!didOneTimeInitialization)
1227         return;
1228
1229     tileControllerMemoryHandler().trimUnparentedTilesToTarget(0);
1230
1231 #if ENABLE(DISK_IMAGE_CACHE)
1232     {
1233         WebKit::MemoryMeasure measurer("Memory warning: flushing images to disk.");
1234         WebCore::memoryCache()->flushCachedImagesToDisk();
1235     }
1236 #endif
1237
1238     [WebStorageManager closeIdleLocalStorageDatabases];
1239
1240     [WebView _releaseMemoryNow];
1241 }
1242
1243 + (void)registerForMemoryNotifications
1244 {
1245     BOOL shouldAutoClearPressureOnMemoryRelease = !WebCore::applicationIsMobileSafari();
1246
1247     memoryPressureHandler().installMemoryReleaseBlock(^{
1248         [WebView _handleMemoryWarning];
1249     }, shouldAutoClearPressureOnMemoryRelease);
1250
1251 #if PLATFORM(IOS) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
1252     static dispatch_source_t memoryNotificationEventSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_MEMORYSTATUS, 0, DISPATCH_MEMORYSTATUS_PRESSURE_WARN, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0));
1253 #else
1254     static dispatch_source_t memoryNotificationEventSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_VM, 0, DISPATCH_VM_PRESSURE, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0));
1255 #endif
1256     dispatch_source_set_event_handler(memoryNotificationEventSource, ^{
1257         // Set memory pressure flag and schedule releasing memory in web thread runloop exit.
1258         memoryPressureHandler().setReceivedMemoryPressure(WebCore::MemoryPressureReasonVMPressure);
1259     });
1260
1261     dispatch_resume(memoryNotificationEventSource);
1262
1263     if (!shouldAutoClearPressureOnMemoryRelease) {
1264         // Listen to memory status notification to reset the memory pressure flag.
1265         static dispatch_source_t memoryStatusEventSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_MEMORYSTATUS,
1266                                                                                     0,
1267                                                                                     DISPATCH_MEMORYSTATUS_PRESSURE_WARN | DISPATCH_MEMORYSTATUS_PRESSURE_NORMAL,
1268                                                                                     dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0));
1269         dispatch_source_set_event_handler(memoryStatusEventSource, ^{
1270             unsigned long currentStatus = dispatch_source_get_data(memoryStatusEventSource);
1271             if (currentStatus == DISPATCH_MEMORYSTATUS_PRESSURE_NORMAL)
1272                 memoryPressureHandler().clearMemoryPressure();
1273             else if (currentStatus == DISPATCH_MEMORYSTATUS_PRESSURE_WARN)
1274                 memoryPressureHandler().setReceivedMemoryPressure(WebCore::MemoryPressureReasonVMStatus);
1275         });
1276
1277         dispatch_resume(memoryStatusEventSource);
1278     }
1279 }
1280
1281 + (void)_releaseMemoryNow
1282 {
1283     ASSERT(WebThreadIsCurrent());
1284     [WebView discardAllCompiledCode];
1285     [WebView garbageCollectNow];
1286     [WebView purgeInactiveFontData];
1287     [WebView drainLayerPool];
1288     [WebCache emptyInMemoryResources];
1289     [WebView releaseFastMallocMemoryOnCurrentThread];
1290
1291     dispatch_async(dispatch_get_main_queue(), ^{
1292         // Clear the main thread's TCMalloc thread cache.
1293         [WebView releaseFastMallocMemoryOnCurrentThread];
1294     });
1295 }
1296
1297 + (void)_clearPrivateBrowsingSessionCookieStorage
1298 {
1299     WebFrameNetworkingContext::clearPrivateBrowsingSessionCookieStorage();
1300 }
1301
1302 - (void)_replaceCurrentHistoryItem:(WebHistoryItem *)item
1303 {
1304     Frame* frame = [self _mainCoreFrame];
1305     if (frame)
1306         frame->loader().history().replaceCurrentItem(core(item));
1307 }
1308
1309 + (void)willEnterBackgroundWithCompletionHandler:(void(^)(void))handler
1310 {
1311     WebThreadRun(^{
1312         [WebView _releaseMemoryNow];
1313         dispatch_async(dispatch_get_main_queue(), handler);
1314     });
1315 }
1316
1317 + (void)releaseFastMallocMemoryOnCurrentThread
1318 {
1319     WebKit::MemoryMeasure measurer("Memory warning: Releasing fast malloc memory to system.");
1320     WTF::releaseFastMallocFreeMemory();
1321 }
1322
1323 + (void)garbageCollectNow
1324 {
1325     ASSERT(WebThreadIsCurrent());
1326     WebKit::MemoryMeasure measurer("Memory warning: Calling JavaScript GC.");
1327     gcController().garbageCollectNow();
1328 }
1329
1330 + (void)purgeInactiveFontData
1331 {
1332     ASSERT(WebThreadIsCurrent());
1333     WebKit::MemoryMeasure measurer("Memory warning: Purging inactive font data.");
1334     fontCache().purgeInactiveFontData();
1335 }
1336
1337 + (void)drainLayerPool
1338 {
1339     ASSERT(WebThreadIsCurrent());
1340     WebKit::MemoryMeasure measurer("Memory warning: Draining layer pool.");
1341     WebCore::LegacyTileCache::drainLayerPool();
1342 }
1343
1344 + (void)discardAllCompiledCode
1345 {
1346     ASSERT(WebThreadIsCurrent());
1347     WebKit::MemoryMeasure measurer("Memory warning: Discarding JIT'ed code.");
1348     gcController().discardAllCompiledCode();
1349 }
1350
1351 + (BOOL)isCharacterSmartReplaceExempt:(unichar)character isPreviousCharacter:(BOOL)b
1352 {
1353     return WebCore::isCharacterSmartReplaceExempt(character, b);
1354 }
1355
1356 - (void)updateLayoutIgnorePendingStyleSheets
1357 {
1358     WebThreadRun(^{
1359         for (Frame* frame = [self _mainCoreFrame]; frame; frame = frame->tree().traverseNext()) {
1360             Document *document = frame->document();
1361             if (document)
1362                 document->updateLayoutIgnorePendingStylesheets();
1363         }
1364     });
1365 }
1366 #endif // PLATFORM(IOS)
1367
1368 static NSMutableSet *knownPluginMIMETypes()
1369 {
1370     static NSMutableSet *mimeTypes = [[NSMutableSet alloc] init];
1371
1372     return mimeTypes;
1373 }
1374
1375 + (void)_registerPluginMIMEType:(NSString *)MIMEType
1376 {
1377     [WebView registerViewClass:[WebHTMLView class] representationClass:[WebHTMLRepresentation class] forMIMEType:MIMEType];
1378     [knownPluginMIMETypes() addObject:MIMEType];
1379 }
1380
1381 + (void)_unregisterPluginMIMEType:(NSString *)MIMEType
1382 {
1383     [self _unregisterViewClassAndRepresentationClassForMIMEType:MIMEType];
1384     [knownPluginMIMETypes() removeObject:MIMEType];
1385 }
1386
1387 + (BOOL)_viewClass:(Class *)vClass andRepresentationClass:(Class *)rClass forMIMEType:(NSString *)MIMEType allowingPlugins:(BOOL)allowPlugins
1388 {
1389     MIMEType = [MIMEType lowercaseString];
1390     Class viewClass = [[WebFrameView _viewTypesAllowImageTypeOmission:YES] _webkit_objectForMIMEType:MIMEType];
1391     Class repClass = [[WebDataSource _repTypesAllowImageTypeOmission:YES] _webkit_objectForMIMEType:MIMEType];
1392
1393 #if PLATFORM(IOS)
1394 #define WebPDFView ([WebView _getPDFViewClass])
1395 #endif
1396     if (!viewClass || !repClass || [[WebPDFView supportedMIMETypes] containsObject:MIMEType]) {
1397 #if PLATFORM(IOS)
1398 #undef WebPDFView
1399 #endif
1400         // Our optimization to avoid loading the plug-in DB and image types for the HTML case failed.
1401
1402         if (allowPlugins) {
1403             // Load the plug-in DB allowing plug-ins to install types.
1404             [WebPluginDatabase sharedDatabase];
1405         }
1406
1407         // Load the image types and get the view class and rep class. This should be the fullest picture of all handled types.
1408         viewClass = [[WebFrameView _viewTypesAllowImageTypeOmission:NO] _webkit_objectForMIMEType:MIMEType];
1409         repClass = [[WebDataSource _repTypesAllowImageTypeOmission:NO] _webkit_objectForMIMEType:MIMEType];
1410     }
1411
1412     if (viewClass && repClass) {
1413         if (viewClass == [WebHTMLView class] && repClass == [WebHTMLRepresentation class]) {
1414             // Special-case WebHTMLView for text types that shouldn't be shown.
1415             if ([[WebHTMLView unsupportedTextMIMETypes] containsObject:MIMEType])
1416                 return NO;
1417
1418             // If the MIME type is a known plug-in we might not want to load it.
1419             if (!allowPlugins && [knownPluginMIMETypes() containsObject:MIMEType]) {
1420                 BOOL isSupportedByWebKit = [[WebHTMLView supportedNonImageMIMETypes] containsObject:MIMEType] ||
1421                     [[WebHTMLView supportedMIMETypes] containsObject:MIMEType];
1422
1423                 // If this is a known plug-in MIME type and WebKit can't show it natively, we don't want to show it.
1424                 if (!isSupportedByWebKit)
1425                     return NO;
1426             }
1427         }
1428         if (vClass)
1429             *vClass = viewClass;
1430         if (rClass)
1431             *rClass = repClass;
1432         return YES;
1433     }
1434
1435     return NO;
1436 }
1437
1438 - (BOOL)_viewClass:(Class *)vClass andRepresentationClass:(Class *)rClass forMIMEType:(NSString *)MIMEType
1439 {
1440     if ([[self class] _viewClass:vClass andRepresentationClass:rClass forMIMEType:MIMEType allowingPlugins:[_private->preferences arePlugInsEnabled]])
1441         return YES;
1442 #if !PLATFORM(IOS)
1443     if (_private->pluginDatabase) {
1444         WebBasePluginPackage *pluginPackage = [_private->pluginDatabase pluginForMIMEType:MIMEType];
1445         if (pluginPackage) {
1446             if (vClass)
1447                 *vClass = [WebHTMLView class];
1448             if (rClass)
1449                 *rClass = [WebHTMLRepresentation class];
1450             return YES;
1451         }
1452     }
1453 #endif
1454     return NO;
1455 }
1456
1457 #if !PLATFORM(IOS)
1458 + (void)_setAlwaysUseATSU:(BOOL)f
1459 {
1460     [self _setAlwaysUsesComplexTextCodePath:f];
1461 }
1462 #endif
1463
1464 + (void)_setAlwaysUsesComplexTextCodePath:(BOOL)f
1465 {
1466     Font::setCodePath(f ? Font::Complex : Font::Auto);
1467 }
1468
1469 + (void)_setAllowsRoundingHacks:(BOOL)allowsRoundingHacks
1470 {
1471     TextRun::setAllowsRoundingHacks(allowsRoundingHacks);
1472 }
1473
1474 + (BOOL)_allowsRoundingHacks
1475 {
1476     return TextRun::allowsRoundingHacks();
1477 }
1478
1479 + (BOOL)canCloseAllWebViews
1480 {
1481     return DOMWindow::dispatchAllPendingBeforeUnloadEvents();
1482 }
1483
1484 + (void)closeAllWebViews
1485 {
1486     DOMWindow::dispatchAllPendingUnloadEvents();
1487
1488     // This will close the WebViews in a random order. Change this if close order is important.
1489     // Make a new set to avoid mutating the set we are enumerating.
1490     NSSet *webViewsToClose = [NSSet setWithSet:(NSSet *)allWebViewsSet];
1491     NSEnumerator *enumerator = [webViewsToClose objectEnumerator];
1492     while (WebView *webView = [enumerator nextObject])
1493         [webView close];
1494 }
1495
1496 + (BOOL)canShowFile:(NSString *)path
1497 {
1498     return [[self class] canShowMIMEType:[WebView _MIMETypeForFile:path]];
1499 }
1500
1501 #if !PLATFORM(IOS)
1502 + (NSString *)suggestedFileExtensionForMIMEType:(NSString *)type
1503 {
1504     return WKGetPreferredExtensionForMIMEType(type);
1505 }
1506 #endif
1507
1508 - (BOOL)_isClosed
1509 {
1510     return !_private || _private->closed;
1511 }
1512
1513 #if PLATFORM(IOS)
1514 - (void)_dispatchUnloadEvent
1515 {
1516     WebThreadRun(^{
1517         WebFrame *mainFrame = [self mainFrame];
1518         Frame *coreMainFrame = core(mainFrame);
1519         if (coreMainFrame) {
1520             Document *document = coreMainFrame->document();
1521             if (document)
1522                 document->dispatchWindowEvent(Event::create(eventNames().unloadEvent, false, false));
1523         }
1524     });
1525 }
1526
1527 - (DOMCSSStyleDeclaration *)styleAtSelectionStart
1528 {
1529     WebFrame *mainFrame = [self mainFrame];
1530     Frame *coreMainFrame = core(mainFrame);
1531     if (!coreMainFrame)
1532         return nil;
1533     return coreMainFrame->styleAtSelectionStart();
1534 }
1535
1536 - (NSUInteger)_renderTreeSize
1537 {
1538     if (!_private->page)
1539         return 0;
1540     return _private->page->renderTreeSize();
1541 }
1542
1543 - (void)_dispatchTileDidDraw:(CALayer*)tile
1544 {
1545     id mailDelegate = [self _webMailDelegate];
1546     if ([mailDelegate respondsToSelector:@selector(_webthread_webView:tileDidDraw:)]) {
1547         [mailDelegate _webthread_webView:self tileDidDraw:tile];
1548         return;
1549     }
1550
1551     if (!OSAtomicCompareAndSwap32(0, 1, &_private->didDrawTiles))
1552         return;
1553
1554     WebThreadLock();
1555
1556     [[[self _UIKitDelegateForwarder] asyncForwarder] webViewDidDrawTiles:self];
1557 }
1558
1559 - (void)_willStartScrollingOrZooming
1560 {
1561     // Pause timers during top level interaction
1562     if (_private->mainViewIsScrollingOrZooming)
1563         return;
1564     _private->mainViewIsScrollingOrZooming = YES;
1565
1566     // This suspends active DOM objects like timers, but not media.
1567     [[self mainFrame] setTimeoutsPaused:YES];
1568
1569     // This defers loading callbacks only.
1570     // WARNING: This behavior could change if Bug 49401 lands in open source WebKit again.
1571     [self setDefersCallbacks:YES];
1572 }
1573
1574 - (void)_didFinishScrollingOrZooming
1575 {
1576     if (!_private->mainViewIsScrollingOrZooming)
1577         return;
1578     _private->mainViewIsScrollingOrZooming = NO;
1579     [self setDefersCallbacks:NO];
1580     [[self mainFrame] setTimeoutsPaused:NO];
1581     FrameView* view = [self _mainCoreFrame]->view();
1582     if (view && view->renderView())
1583         view->renderView()->resumePausedImageAnimationsIfNeeded();
1584 }
1585
1586 - (void)_setResourceLoadSchedulerSuspended:(BOOL)suspend
1587 {
1588     if (suspend)
1589         resourceLoadScheduler()->suspendPendingRequests();
1590     else
1591         resourceLoadScheduler()->resumePendingRequests();
1592 }
1593
1594 + (void)_setAcceleratedImageDecoding:(BOOL)enabled
1595 {
1596     UNUSED_PARAM(enabled);
1597 }
1598
1599 + (void)_setAllowCookies:(BOOL)allow
1600 {
1601     ResourceRequestBase::setDefaultAllowCookies(allow);
1602 }
1603
1604 + (BOOL)_allowCookies
1605 {
1606     return ResourceRequestBase::defaultAllowCookies();
1607 }
1608
1609 + (BOOL)_isUnderMemoryPressure
1610 {
1611     return memoryPressureHandler().isUnderMemoryPressure();
1612 }
1613
1614 + (void)_clearMemoryPressure
1615 {
1616     memoryPressureHandler().clearMemoryPressure();
1617 }
1618
1619 + (BOOL)_shouldWaitForMemoryClearMessage
1620 {
1621     return memoryPressureHandler().shouldWaitForMemoryClearMessage();
1622 }
1623 #endif // PLATFORM(IOS)
1624
1625 - (void)_closePluginDatabases
1626 {
1627     pluginDatabaseClientCount--;
1628
1629     // Close both sets of plug-in databases because plug-ins need an opportunity to clean up files, etc.
1630
1631 #if !PLATFORM(IOS)
1632     // Unload the WebView local plug-in database.
1633     if (_private->pluginDatabase) {
1634         [_private->pluginDatabase destroyAllPluginInstanceViews];
1635         [_private->pluginDatabase close];
1636         [_private->pluginDatabase release];
1637         _private->pluginDatabase = nil;
1638     }
1639 #endif
1640
1641     // Keep the global plug-in database active until the app terminates to avoid having to reload plug-in bundles.
1642     if (!pluginDatabaseClientCount && applicationIsTerminating)
1643         [WebPluginDatabase closeSharedDatabase];
1644 }
1645
1646 - (void)_closeWithFastTeardown
1647 {
1648 #ifndef NDEBUG
1649     WTF::RefCountedLeakCounter::suppressMessages("At least one WebView was closed with fast teardown.");
1650 #endif
1651
1652 #if !PLATFORM(IOS)
1653     [[NSDistributedNotificationCenter defaultCenter] removeObserver:self];
1654 #endif
1655     [[NSNotificationCenter defaultCenter] removeObserver:self];
1656
1657     [self _closePluginDatabases];
1658 }
1659
1660 static bool fastDocumentTeardownEnabled()
1661 {
1662 #ifdef NDEBUG
1663     static bool enabled = ![[NSUserDefaults standardUserDefaults] boolForKey:WebKitEnableFullDocumentTeardownPreferenceKey];
1664 #else
1665     static bool initialized = false;
1666     static bool enabled = false;
1667     if (!initialized) {
1668         // This allows debug builds to default to not have fast teardown, so leak checking still works.
1669         // But still allow the WebKitEnableFullDocumentTeardown default to override it if present.
1670         NSNumber *setting = [[NSUserDefaults standardUserDefaults] objectForKey:WebKitEnableFullDocumentTeardownPreferenceKey];
1671         if (setting)
1672             enabled = ![setting boolValue];
1673         initialized = true;
1674     }
1675 #endif
1676     return enabled;
1677 }
1678
1679 // _close is here only for backward compatibility; clients and subclasses should use
1680 // public method -close instead.
1681 - (void)_close
1682 {
1683 #if PLATFORM(IOS)
1684     // Always clear delegates on calling thread, becasue caller can deallocate delegates right after calling -close
1685     // (and could in fact already be in delegate's -dealloc method, as seen in <rdar://problem/11540972>).
1686
1687     [self _clearDelegates];
1688
1689     // Fix for problems such as <rdar://problem/5774587> Crash closing tab in WebCore::Frame::page() from -[WebCoreFrameBridge pauseTimeouts]
1690     WebThreadRun(^{
1691 #endif
1692
1693     if (!_private || _private->closed)
1694         return;
1695
1696     [[NSNotificationCenter defaultCenter] postNotificationName:WebViewWillCloseNotification object:self];
1697
1698     _private->closed = YES;
1699     [self _removeFromAllWebViewsSet];
1700
1701 #ifndef NDEBUG
1702     WTF::RefCountedLeakCounter::cancelMessageSuppression(webViewIsOpen);
1703 #endif
1704
1705     // To quit the apps fast we skip document teardown, except plugins
1706     // need to be destroyed and unloaded.
1707     if (applicationIsTerminating && fastDocumentTeardownEnabled()) {
1708         [self _closeWithFastTeardown];
1709         return;
1710     }
1711
1712 #if ENABLE(VIDEO) && !PLATFORM(IOS)
1713     [self _exitFullscreen];
1714 #endif
1715
1716 #if PLATFORM(IOS)
1717     _private->closing = YES;
1718 #endif
1719
1720     if (Frame* mainFrame = [self _mainCoreFrame])
1721         mainFrame->loader().detachFromParent();
1722
1723     [self setHostWindow:nil];
1724
1725 #if !PLATFORM(IOS)
1726     [self setDownloadDelegate:nil];
1727     [self setEditingDelegate:nil];
1728     [self setFrameLoadDelegate:nil];
1729     [self setPolicyDelegate:nil];
1730     [self setResourceLoadDelegate:nil];
1731     [self setScriptDebugDelegate:nil];
1732     [self setUIDelegate:nil];
1733
1734     [_private->inspector webViewClosed];
1735 #endif
1736
1737 #if !PLATFORM(IOS)
1738     // To avoid leaks, call removeDragCaret in case it wasn't called after moveDragCaretToPoint.
1739     [self removeDragCaret];
1740 #endif
1741
1742     _private->group->removeWebView(self);
1743
1744     // Deleteing the WebCore::Page will clear the page cache so we call destroy on
1745     // all the plug-ins in the page cache to break any retain cycles.
1746     // See comment in HistoryItem::releaseAllPendingPageCaches() for more information.
1747     Page* page = _private->page;
1748     _private->page = 0;
1749     delete page;
1750
1751 #if !PLATFORM(IOS)
1752     if (_private->hasSpellCheckerDocumentTag) {
1753         [[NSSpellChecker sharedSpellChecker] closeSpellDocumentWithTag:_private->spellCheckerDocumentTag];
1754         _private->hasSpellCheckerDocumentTag = NO;
1755     }
1756 #endif
1757
1758     if (_private->layerFlushController) {
1759         _private->layerFlushController->invalidate();
1760         _private->layerFlushController = nullptr;
1761     }
1762
1763 #if USE(GLIB)
1764     [self _clearGlibLoopObserver];
1765 #endif
1766
1767     [[self _notificationProvider] unregisterWebView:self];
1768
1769 #if !PLATFORM(IOS)
1770     [[NSDistributedNotificationCenter defaultCenter] removeObserver:self];
1771 #endif
1772     [[NSNotificationCenter defaultCenter] removeObserver:self];
1773
1774     [WebPreferences _removeReferenceForIdentifier:[self preferencesIdentifier]];
1775
1776     WebPreferences *preferences = _private->preferences;
1777     _private->preferences = nil;
1778     [preferences didRemoveFromWebView];
1779     [preferences release];
1780
1781     [self _closePluginDatabases];
1782
1783 #ifndef NDEBUG
1784     // Need this to make leak messages accurate.
1785     if (applicationIsTerminating) {
1786         gcController().garbageCollectNow();
1787         [WebCache setDisabled:YES];
1788     }
1789 #endif
1790 #if PLATFORM(IOS)
1791     // Fix for problems such as <rdar://problem/5774587> Crash closing tab in WebCore::Frame::page() from -[WebCoreFrameBridge pauseTimeouts]
1792     });
1793 #endif
1794 }
1795
1796 // Indicates if the WebView is in the midst of a user gesture.
1797 - (BOOL)_isProcessingUserGesture
1798 {
1799     return ScriptController::processingUserGesture();
1800 }
1801
1802 + (NSString *)_MIMETypeForFile:(NSString *)path
1803 {
1804 #if !PLATFORM(IOS)
1805     NSString *extension = [path pathExtension];
1806 #endif
1807     NSString *MIMEType = nil;
1808
1809 #if !PLATFORM(IOS)
1810     // Get the MIME type from the extension.
1811     if ([extension length] != 0) {
1812         MIMEType = WKGetMIMETypeForExtension(extension);
1813     }
1814 #endif
1815
1816     // If we can't get a known MIME type from the extension, sniff.
1817     if ([MIMEType length] == 0 || [MIMEType isEqualToString:@"application/octet-stream"]) {
1818         NSFileHandle *handle = [NSFileHandle fileHandleForReadingAtPath:path];
1819         NSData *data = [handle readDataOfLength:WEB_GUESS_MIME_TYPE_PEEK_LENGTH];
1820         [handle closeFile];
1821         if ([data length] != 0) {
1822             MIMEType = [data _webkit_guessedMIMEType];
1823         }
1824         if ([MIMEType length] == 0) {
1825             MIMEType = @"application/octet-stream";
1826         }
1827     }
1828
1829     return MIMEType;
1830 }
1831
1832 - (WebDownload *)_downloadURL:(NSURL *)URL
1833 {
1834     ASSERT(URL);
1835
1836     NSURLRequest *request = [[NSURLRequest alloc] initWithURL:URL];
1837     WebDownload *download = [WebDownload _downloadWithRequest:request
1838                                                      delegate:_private->downloadDelegate
1839                                                     directory:nil];
1840     [request release];
1841
1842     return download;
1843 }
1844
1845 - (WebView *)_openNewWindowWithRequest:(NSURLRequest *)request
1846 {
1847     NSDictionary *features = [[NSDictionary alloc] init];
1848     WebView *newWindowWebView = [[self _UIDelegateForwarder] webView:self
1849                                             createWebViewWithRequest:nil
1850                                                       windowFeatures:features];
1851     [features release];
1852     if (!newWindowWebView)
1853         return nil;
1854
1855     CallUIDelegate(newWindowWebView, @selector(webViewShow:));
1856     return newWindowWebView;
1857 }
1858
1859 - (WebInspector *)inspector
1860 {
1861     if (!_private->inspector)
1862         _private->inspector = [[WebInspector alloc] initWithWebView:self];
1863     return _private->inspector;
1864 }
1865
1866 #if ENABLE(REMOTE_INSPECTOR)
1867 + (void)_enableRemoteInspector
1868 {
1869     RemoteInspector::shared().start();
1870 }
1871
1872 + (void)_disableRemoteInspector
1873 {
1874     RemoteInspector::shared().stop();
1875 }
1876
1877 + (void)_disableAutoStartRemoteInspector
1878 {
1879     RemoteInspector::startDisabled();
1880 }
1881
1882 + (BOOL)_isRemoteInspectorEnabled
1883 {
1884     return RemoteInspector::shared().enabled();
1885 }
1886
1887 + (BOOL)_hasRemoteInspectorSession
1888 {
1889     return RemoteInspector::shared().hasActiveDebugSession();
1890 }
1891
1892 - (BOOL)allowsRemoteInspection
1893 {
1894     return _private->page->remoteInspectionAllowed();
1895 }
1896
1897 - (void)setAllowsRemoteInspection:(BOOL)allow
1898 {
1899     _private->page->setRemoteInspectionAllowed(allow);
1900 }
1901
1902 - (void)setShowingInspectorIndication:(BOOL)showing
1903 {
1904 #if PLATFORM(IOS)
1905     ASSERT(WebThreadIsLocked());
1906
1907     if (showing) {
1908         if (!_private->indicateLayer) {
1909             _private->indicateLayer = [[WebIndicateLayer alloc] initWithWebView:self];
1910             [_private->indicateLayer setNeedsLayout];
1911             [[[self window] hostLayer] addSublayer:_private->indicateLayer];
1912         }
1913     } else {
1914         [_private->indicateLayer removeFromSuperlayer];
1915         [_private->indicateLayer release];
1916         _private->indicateLayer = nil;
1917     }
1918 #else
1919     // Implemented in WebCore::InspectorOverlay.
1920 #endif
1921 }
1922
1923 #if PLATFORM(IOS)
1924 - (void)_setHostApplicationProcessIdentifier:(pid_t)pid auditToken:(audit_token_t)auditToken
1925 {
1926     RetainPtr<CFDataRef> auditData = adoptCF(CFDataCreate(nullptr, (const UInt8*)&auditToken, sizeof(auditToken)));
1927     RemoteInspector::shared().setParentProcessInformation(pid, auditData);
1928 }
1929 #endif // PLATFORM(IOS)
1930 #endif // ENABLE(REMOTE_INSPECTOR)
1931
1932 - (WebCore::Page*)page
1933 {
1934     return _private->page;
1935 }
1936
1937 #if !PLATFORM(IOS)
1938 - (NSMenu *)_menuForElement:(NSDictionary *)element defaultItems:(NSArray *)items
1939 {
1940     NSArray *defaultMenuItems = [[WebDefaultUIDelegate sharedUIDelegate] webView:self contextMenuItemsForElement:element defaultMenuItems:items];
1941     NSArray *menuItems = defaultMenuItems;
1942
1943     // CallUIDelegate returns nil if UIDelegate is nil or doesn't respond to the selector. So we need to check that here
1944     // to distinguish between using defaultMenuItems or the delegate really returning nil to say "no context menu".
1945     SEL selector = @selector(webView:contextMenuItemsForElement:defaultMenuItems:);
1946     if (_private->UIDelegate && [_private->UIDelegate respondsToSelector:selector]) {
1947         menuItems = CallUIDelegate(self, selector, element, defaultMenuItems);
1948         if (!menuItems)
1949             return nil;
1950     }
1951
1952     unsigned count = [menuItems count];
1953     if (!count)
1954         return nil;
1955
1956     NSMenu *menu = [[NSMenu alloc] init];
1957     for (unsigned i = 0; i < count; i++)
1958         [menu addItem:[menuItems objectAtIndex:i]];
1959
1960     return [menu autorelease];
1961 }
1962 #endif
1963
1964 - (void)_mouseDidMoveOverElement:(NSDictionary *)dictionary modifierFlags:(NSUInteger)modifierFlags
1965 {
1966     // We originally intended to call this delegate method sometimes with a nil dictionary, but due to
1967     // a bug dating back to WebKit 1.0 this delegate was never called with nil! Unfortunately we can't
1968     // start calling this with nil since it will break Adobe Help Viewer, and possibly other clients.
1969     if (!dictionary)
1970         return;
1971     CallUIDelegate(self, @selector(webView:mouseDidMoveOverElement:modifierFlags:), dictionary, modifierFlags);
1972 }
1973
1974 - (void)_loadBackForwardListFromOtherView:(WebView *)otherView
1975 {
1976     if (!_private->page)
1977         return;
1978
1979     if (!otherView->_private->page)
1980         return;
1981
1982     // It turns out the right combination of behavior is done with the back/forward load
1983     // type.  (See behavior matrix at the top of WebFramePrivate.)  So we copy all the items
1984     // in the back forward list, and go to the current one.
1985
1986     BackForwardClient* backForwardClient = _private->page->backForward().client();
1987     ASSERT(!backForwardClient->currentItem()); // destination list should be empty
1988
1989     BackForwardClient* otherBackForwardClient = otherView->_private->page->backForward().client();
1990     if (!otherBackForwardClient->currentItem())
1991         return; // empty back forward list, bail
1992
1993     HistoryItem* newItemToGoTo = 0;
1994
1995     int lastItemIndex = otherBackForwardClient->forwardListCount();
1996     for (int i = -otherBackForwardClient->backListCount(); i <= lastItemIndex; ++i) {
1997         if (i == 0) {
1998             // If this item is showing , save away its current scroll and form state,
1999             // since that might have changed since loading and it is normally not saved
2000             // until we leave that page.
2001             otherView->_private->page->mainFrame().loader().history().saveDocumentAndScrollState();
2002         }
2003         RefPtr<HistoryItem> newItem = otherBackForwardClient->itemAtIndex(i)->copy();
2004         if (i == 0)
2005             newItemToGoTo = newItem.get();
2006         backForwardClient->addItem(newItem.release());
2007     }
2008
2009     ASSERT(newItemToGoTo);
2010     _private->page->goToItem(newItemToGoTo, FrameLoadTypeIndexedBackForward);
2011 }
2012
2013 - (void)_setFormDelegate: (id<WebFormDelegate>)delegate
2014 {
2015     _private->formDelegate = delegate;
2016 #if PLATFORM(IOS)
2017     [_private->formDelegateForwarder clearTarget];
2018     [_private->formDelegateForwarder release];
2019     _private->formDelegateForwarder = nil;
2020 #endif
2021 }
2022
2023 - (id<WebFormDelegate>)_formDelegate
2024 {
2025     return _private->formDelegate;
2026 }
2027
2028 #if PLATFORM(IOS)
2029 - (id)_formDelegateForwarder
2030 {
2031     if (_private->closing)
2032         return nil;
2033
2034     if (!_private->formDelegateForwarder)
2035         _private->formDelegateForwarder = [[_WebSafeForwarder alloc] initWithTarget:[self _formDelegate] defaultTarget:[WebDefaultFormDelegate sharedFormDelegate]];
2036     return _private->formDelegateForwarder;
2037 }
2038
2039 - (id)_formDelegateForSelector:(SEL)selector
2040 {
2041     id delegate = self->_private->formDelegate;
2042     if ([delegate respondsToSelector:selector])
2043         return delegate;
2044
2045     delegate = [WebDefaultFormDelegate sharedFormDelegate];
2046     if ([delegate respondsToSelector:selector])
2047         return delegate;
2048
2049     return nil;
2050 }
2051 #endif
2052
2053 #if !PLATFORM(IOS)
2054 - (BOOL)_needsAdobeFrameReloadingQuirk
2055 {
2056     static BOOL needsQuirk = WKAppVersionCheckLessThan(@"com.adobe.Acrobat", -1, 9.0)
2057         || WKAppVersionCheckLessThan(@"com.adobe.Acrobat.Pro", -1, 9.0)
2058         || WKAppVersionCheckLessThan(@"com.adobe.Reader", -1, 9.0)
2059         || WKAppVersionCheckLessThan(@"com.adobe.distiller", -1, 9.0)
2060         || WKAppVersionCheckLessThan(@"com.adobe.Contribute", -1, 4.2)
2061         || WKAppVersionCheckLessThan(@"com.adobe.dreamweaver-9.0", -1, 9.1)
2062         || WKAppVersionCheckLessThan(@"com.macromedia.fireworks", -1, 9.1)
2063         || WKAppVersionCheckLessThan(@"com.adobe.InCopy", -1, 5.1)
2064         || WKAppVersionCheckLessThan(@"com.adobe.InDesign", -1, 5.1)
2065         || WKAppVersionCheckLessThan(@"com.adobe.Soundbooth", -1, 2);
2066
2067     return needsQuirk;
2068 }
2069
2070 - (BOOL)_needsLinkElementTextCSSQuirk
2071 {
2072     static BOOL needsQuirk = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITHOUT_LINK_ELEMENT_TEXT_CSS_QUIRK)
2073         && WKAppVersionCheckLessThan(@"com.e-frontier.shade10", -1, 10.6);
2074     return needsQuirk;
2075 }
2076
2077 - (BOOL)_needsIsLoadingInAPISenseQuirk
2078 {
2079     static BOOL needsQuirk = WKAppVersionCheckLessThan(@"com.apple.iAdProducer", -1, 2.1);
2080
2081     return needsQuirk;
2082 }
2083
2084 - (BOOL)_needsKeyboardEventDisambiguationQuirks
2085 {
2086     static BOOL needsQuirks = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_IE_COMPATIBLE_KEYBOARD_EVENT_DISPATCH) && !applicationIsSafari();
2087     return needsQuirks;
2088 }
2089
2090 - (BOOL)_needsFrameLoadDelegateRetainQuirk
2091 {
2092     static BOOL needsQuirk = WKAppVersionCheckLessThan(@"com.equinux.iSale5", -1, 5.6);
2093     return needsQuirk;
2094 }
2095
2096 static bool needsSelfRetainWhileLoadingQuirk()
2097 {
2098     static bool needsQuirk = applicationIsAperture();
2099     return needsQuirk;
2100 }
2101 #endif // !PLATFORM(IOS)
2102
2103 - (BOOL)_needsPreHTML5ParserQuirks
2104 {
2105 #if !PLATFORM(IOS)
2106     // AOL Instant Messenger and Microsoft My Day contain markup incompatible
2107     // with the new HTML5 parser. If these applications were linked against a
2108     // version of WebKit prior to the introduction of the HTML5 parser, enable
2109     // parser quirks to maintain compatibility. For details, see
2110     // <https://bugs.webkit.org/show_bug.cgi?id=46134> and
2111     // <https://bugs.webkit.org/show_bug.cgi?id=46334>.
2112     static bool isApplicationNeedingParserQuirks = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_HTML5_PARSER)
2113         && (applicationIsAOLInstantMessenger() || applicationIsMicrosoftMyDay());
2114
2115     // Mail.app must continue to display HTML email that contains quirky markup.
2116     static bool isAppleMail = applicationIsAppleMail();
2117
2118     return isApplicationNeedingParserQuirks
2119         || isAppleMail
2120 #if ENABLE(DASHBOARD_SUPPORT)
2121         // Pre-HTML5 parser quirks are required to remain compatible with many
2122         // Dashboard widgets. See <rdar://problem/8175982>.
2123         || (_private->page && _private->page->settings().usesDashboardBackwardCompatibilityMode())
2124 #endif
2125         || [[self preferences] usePreHTML5ParserQuirks];
2126 #else
2127     static bool isApplicationNeedingParserQuirks = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_HTML5_PARSER) && applicationIsDaijisenDictionary();
2128     return isApplicationNeedingParserQuirks || [[self preferences] usePreHTML5ParserQuirks];
2129 #endif
2130 }
2131
2132 - (BOOL)_needsUnrestrictedGetMatchedCSSRules
2133 {
2134 #if !PLATFORM(IOS)
2135     static bool needsUnrestrictedGetMatchedCSSRules = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_GET_MATCHED_CSS_RULES_RESTRICTIONS) && applicationIsSafari();
2136     return needsUnrestrictedGetMatchedCSSRules;
2137 #else
2138     // FIXME: <rdar://problem/8963684> Implement linked-on-or-after check for needsUnrestrictedGetMatchedCSSRules
2139     return NO;
2140 #endif
2141 }
2142
2143 - (void)_preferencesChangedNotification:(NSNotification *)notification
2144 {
2145 #if PLATFORM(IOS)
2146     // For WebViews that load synchronously, preference changes need to be propagated
2147     // down to WebCore synchronously so that loads in that WebView have the correct
2148     // up-to-date settings.
2149     if (!WebThreadIsLocked())
2150         WebThreadLock();
2151     if ([[self mainFrame] _loadsSynchronously]) {
2152 #endif
2153
2154     WebPreferences *preferences = (WebPreferences *)[notification object];
2155     [self _preferencesChanged:preferences];
2156
2157 #if PLATFORM(IOS)
2158     } else {
2159         WebThreadRun(^{
2160             // It is possible that the prefs object has already changed before the invocation could be called
2161             // on the web thread. This is not possible on TOT which is why they have a simple ASSERT.
2162             WebPreferences *preferences = (WebPreferences *)[notification object];
2163             if (preferences != [self preferences])
2164                 return;
2165             [self _preferencesChanged:preferences];
2166         });
2167     }
2168 #endif
2169 }
2170
2171 - (void)_preferencesChanged:(WebPreferences *)preferences
2172 {
2173     ASSERT(preferences == [self preferences]);
2174     if (!_private->userAgentOverridden)
2175         _private->userAgent = String();
2176
2177     // Cache this value so we don't have to read NSUserDefaults on each page load
2178     _private->useSiteSpecificSpoofing = [preferences _useSiteSpecificSpoofing];
2179
2180     // Update corresponding WebCore Settings object.
2181     if (!_private->page)
2182         return;
2183
2184 #if PLATFORM(IOS)
2185     // iOS waits to call [WebDatabaseManager sharedWebDatabaseManager] until
2186     // didOneTimeInitialization is true so that we don't initialize databases
2187     // until the first WebView has been created. This is because database
2188     // initialization current requires disk access to populate the origins
2189     // quota map and we want to do this lazily by waiting until WebKit is
2190     // used to display web content in a WebView. The possible cases are:
2191     //   - on one time initialize (the first WebView creation) if databases are enabled (default)
2192     //   - when databases are dynamically enabled later, and they were disabled at startup (this case)
2193     if (didOneTimeInitialization) {
2194         if ([preferences databasesEnabled])
2195             [WebDatabaseManager sharedWebDatabaseManager];
2196
2197         if ([preferences storageTrackerEnabled])
2198             WebKitInitializeStorageIfNecessary();
2199     }
2200 #endif
2201
2202     Settings& settings = _private->page->settings();
2203
2204     settings.setCursiveFontFamily([preferences cursiveFontFamily]);
2205     settings.setDefaultFixedFontSize([preferences defaultFixedFontSize]);
2206     settings.setDefaultFontSize([preferences defaultFontSize]);
2207     settings.setDefaultTextEncodingName([preferences defaultTextEncodingName]);
2208     settings.setUsesEncodingDetector([preferences usesEncodingDetector]);
2209     settings.setFantasyFontFamily([preferences fantasyFontFamily]);
2210     settings.setFixedFontFamily([preferences fixedFontFamily]);
2211     settings.setScreenFontSubstitutionEnabled(
2212 #if !PLATFORM(IOS) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
2213         [[NSUserDefaults standardUserDefaults] boolForKey:@"NSFontDefaultScreenFontSubstitutionEnabled"] ||
2214 #endif
2215         [preferences screenFontSubstitutionEnabled]
2216     );
2217     settings.setForceFTPDirectoryListings([preferences _forceFTPDirectoryListings]);
2218     settings.setFTPDirectoryTemplatePath([preferences _ftpDirectoryTemplatePath]);
2219     settings.setLocalStorageDatabasePath([preferences _localStorageDatabasePath]);
2220     settings.setJavaEnabled([preferences isJavaEnabled]);
2221     settings.setScriptEnabled([preferences isJavaScriptEnabled]);
2222     settings.setWebSecurityEnabled([preferences isWebSecurityEnabled]);
2223     settings.setAllowUniversalAccessFromFileURLs([preferences allowUniversalAccessFromFileURLs]);
2224     settings.setAllowFileAccessFromFileURLs([preferences allowFileAccessFromFileURLs]);
2225     settings.setJavaScriptCanOpenWindowsAutomatically([preferences javaScriptCanOpenWindowsAutomatically]);
2226     settings.setMinimumFontSize([preferences minimumFontSize]);
2227     settings.setMinimumLogicalFontSize([preferences minimumLogicalFontSize]);
2228     settings.setPictographFontFamily([preferences pictographFontFamily]);
2229     settings.setPluginsEnabled([preferences arePlugInsEnabled]);
2230     settings.setLocalStorageEnabled([preferences localStorageEnabled]);
2231
2232     _private->page->enableLegacyPrivateBrowsing([preferences privateBrowsingEnabled]);
2233     settings.setSansSerifFontFamily([preferences sansSerifFontFamily]);
2234     settings.setSerifFontFamily([preferences serifFontFamily]);
2235     settings.setStandardFontFamily([preferences standardFontFamily]);
2236     settings.setLoadsImagesAutomatically([preferences loadsImagesAutomatically]);
2237     settings.setLoadsSiteIconsIgnoringImageLoadingSetting([preferences loadsSiteIconsIgnoringImageLoadingPreference]);
2238 #if PLATFORM(IOS)
2239     settings.setShouldPrintBackgrounds(true);
2240 #else
2241     settings.setShouldPrintBackgrounds([preferences shouldPrintBackgrounds]);
2242 #endif
2243     settings.setShrinksStandaloneImagesToFit([preferences shrinksStandaloneImagesToFit]);
2244     settings.setEditableLinkBehavior(core([preferences editableLinkBehavior]));
2245     settings.setTextDirectionSubmenuInclusionBehavior(core([preferences textDirectionSubmenuInclusionBehavior]));
2246     settings.setDOMPasteAllowed([preferences isDOMPasteAllowed]);
2247     settings.setUsesPageCache([self usesPageCache]);
2248     settings.setPageCacheSupportsPlugins([preferences pageCacheSupportsPlugins]);
2249     settings.setBackForwardCacheExpirationInterval([preferences _backForwardCacheExpirationInterval]);
2250
2251     settings.setDeveloperExtrasEnabled([preferences developerExtrasEnabled]);
2252     settings.setJavaScriptExperimentsEnabled([preferences javaScriptExperimentsEnabled]);
2253     settings.setAuthorAndUserStylesEnabled([preferences authorAndUserStylesEnabled]);
2254     settings.setApplicationChromeMode([preferences applicationChromeModeEnabled]);
2255
2256     settings.setNeedsSiteSpecificQuirks(_private->useSiteSpecificSpoofing);
2257     settings.setWebArchiveDebugModeEnabled([preferences webArchiveDebugModeEnabled]);
2258     settings.setLocalFileContentSniffingEnabled([preferences localFileContentSniffingEnabled]);
2259     settings.setOfflineWebApplicationCacheEnabled([preferences offlineWebApplicationCacheEnabled]);
2260     settings.setJavaScriptCanAccessClipboard([preferences javaScriptCanAccessClipboard]);
2261     settings.setXSSAuditorEnabled([preferences isXSSAuditorEnabled]);
2262     settings.setDNSPrefetchingEnabled([preferences isDNSPrefetchingEnabled]);
2263
2264     // FIXME: Enabling accelerated compositing when WebGL is enabled causes tests to fail on Leopard which expect HW compositing to be disabled.
2265     // Until we fix that, I will comment out the test (CFM)
2266     settings.setAcceleratedCompositingEnabled([preferences acceleratedCompositingEnabled]);
2267     settings.setAcceleratedDrawingEnabled([preferences acceleratedDrawingEnabled]);
2268     settings.setCanvasUsesAcceleratedDrawing([preferences canvasUsesAcceleratedDrawing]);
2269     settings.setShowDebugBorders([preferences showDebugBorders]);
2270     settings.setShowRepaintCounter([preferences showRepaintCounter]);
2271     settings.setWebGLEnabled([preferences webGLEnabled]);
2272     settings.setSubpixelCSSOMElementMetricsEnabled([preferences subpixelCSSOMElementMetricsEnabled]);
2273
2274     settings.setForceSoftwareWebGLRendering([preferences forceSoftwareWebGLRendering]);
2275     settings.setAccelerated2dCanvasEnabled([preferences accelerated2dCanvasEnabled]);
2276     settings.setLoadDeferringEnabled(shouldEnableLoadDeferring());
2277     settings.setWindowFocusRestricted(shouldRestrictWindowFocus());
2278     settings.setFrameFlatteningEnabled([preferences isFrameFlatteningEnabled]);
2279     settings.setSpatialNavigationEnabled([preferences isSpatialNavigationEnabled]);
2280     settings.setPaginateDuringLayoutEnabled([preferences paginateDuringLayoutEnabled]);
2281     RuntimeEnabledFeatures::sharedFeatures().setCSSRegionsEnabled([preferences cssRegionsEnabled]);
2282     RuntimeEnabledFeatures::sharedFeatures().setCSSCompositingEnabled([preferences cssCompositingEnabled]);
2283
2284     settings.setAsynchronousSpellCheckingEnabled([preferences asynchronousSpellCheckingEnabled]);
2285     settings.setHyperlinkAuditingEnabled([preferences hyperlinkAuditingEnabled]);
2286     settings.setUsePreHTML5ParserQuirks([self _needsPreHTML5ParserQuirks]);
2287     settings.setCrossOriginCheckInGetMatchedCSSRulesDisabled([self _needsUnrestrictedGetMatchedCSSRules]);
2288     settings.setInteractiveFormValidationEnabled([self interactiveFormValidationEnabled]);
2289     settings.setValidationMessageTimerMagnification([self validationMessageTimerMagnification]);
2290
2291     settings.setMediaPlaybackRequiresUserGesture([preferences mediaPlaybackRequiresUserGesture]);
2292     settings.setMediaPlaybackAllowsInline([preferences mediaPlaybackAllowsInline]);
2293     settings.setSuppressesIncrementalRendering([preferences suppressesIncrementalRendering]);
2294     settings.setBackspaceKeyNavigationEnabled([preferences backspaceKeyNavigationEnabled]);
2295     settings.setWantsBalancedSetDefersLoadingBehavior([preferences wantsBalancedSetDefersLoadingBehavior]);
2296     settings.setMockScrollbarsEnabled([preferences mockScrollbarsEnabled]);
2297
2298     settings.setShouldRespectImageOrientation([preferences shouldRespectImageOrientation]);
2299
2300     settings.setRequestAnimationFrameEnabled([preferences requestAnimationFrameEnabled]);
2301     settings.setDiagnosticLoggingEnabled([preferences diagnosticLoggingEnabled]);
2302     settings.setLowPowerVideoAudioBufferSizeEnabled([preferences lowPowerVideoAudioBufferSizeEnabled]);
2303
2304     settings.setUseLegacyTextAlignPositionedElementBehavior([preferences useLegacyTextAlignPositionedElementBehavior]);
2305
2306     settings.setShouldConvertPositionStyleOnCopy([preferences shouldConvertPositionStyleOnCopy]);
2307     settings.setEnableInheritURIQueryComponent([preferences isInheritURIQueryComponentEnabled]);
2308
2309     switch ([preferences storageBlockingPolicy]) {
2310     case WebAllowAllStorage:
2311         settings.setStorageBlockingPolicy(SecurityOrigin::AllowAllStorage);
2312         break;
2313     case WebBlockThirdPartyStorage:
2314         settings.setStorageBlockingPolicy(SecurityOrigin::BlockThirdPartyStorage);
2315         break;
2316     case WebBlockAllStorage:
2317         settings.setStorageBlockingPolicy(SecurityOrigin::BlockAllStorage);
2318         break;
2319     }
2320
2321     settings.setPlugInSnapshottingEnabled([preferences plugInSnapshottingEnabled]);
2322
2323     settings.setFixedPositionCreatesStackingContext(true);
2324
2325 #if PLATFORM(IOS)
2326     settings.setStandalone([preferences _standalone]);
2327     settings.setTelephoneNumberParsingEnabled([preferences _telephoneNumberParsingEnabled]);
2328     settings.setAlwaysUseBaselineOfPrimaryFont([preferences _alwaysUseBaselineOfPrimaryFont]);
2329     settings.setAllowMultiElementImplicitSubmission([preferences _allowMultiElementImplicitFormSubmission]);
2330     settings.setLayoutInterval(std::chrono::milliseconds([preferences _layoutInterval]));
2331     settings.setMaxParseDuration([preferences _maxParseDuration]);
2332     settings.setAlwaysUseAcceleratedOverflowScroll([preferences _alwaysUseAcceleratedOverflowScroll]);
2333     settings.setMediaPlaybackAllowsAirPlay([preferences mediaPlaybackAllowsAirPlay]);
2334     settings.setAudioSessionCategoryOverride([preferences audioSessionCategoryOverride]);
2335     settings.setNetworkDataUsageTrackingEnabled([preferences networkDataUsageTrackingEnabled]);
2336     settings.setNetworkInterfaceName([preferences networkInterfaceName]);
2337     settings.setAVKitEnabled([preferences avKitEnabled]);
2338     settings.setShouldTransformsAffectOverflow(shouldTransformsAffectOverflow());
2339     settings.setShouldDispatchJavaScriptWindowOnErrorEvents(shouldDispatchJavaScriptWindowOnErrorEvents());
2340
2341     settings.setPasswordEchoEnabled([preferences _allowPasswordEcho]);
2342     settings.setPasswordEchoDurationInSeconds([preferences _passwordEchoDuration]);
2343
2344     ASSERT_WITH_MESSAGE(settings.pageCacheSupportsPlugins(), "PageCacheSupportsPlugins should be enabled on iOS.");
2345     settings.setDelegatesPageScaling(true);
2346
2347 #if ENABLE(IOS_TEXT_AUTOSIZING)
2348     settings.setMinimumZoomFontSize([preferences _minimumZoomFontSize]);
2349 #endif
2350 #endif // PLATFORM(IOS)
2351
2352 #if PLATFORM(MAC)
2353     if ([preferences userStyleSheetEnabled]) {
2354         NSString* location = [[preferences userStyleSheetLocation] _web_originalDataAsString];
2355         if ([location isEqualToString:@"apple-dashboard://stylesheet"])
2356             location = @"file:///System/Library/PrivateFrameworks/DashboardClient.framework/Resources/widget.css";
2357         settings.setUserStyleSheetLocation([NSURL URLWithString:(location ? location : @"")]);
2358     } else
2359         settings.setUserStyleSheetLocation([NSURL URLWithString:@""]);
2360
2361     settings.setNeedsAdobeFrameReloadingQuirk([self _needsAdobeFrameReloadingQuirk]);
2362     settings.setTreatsAnyTextCSSLinkAsStylesheet([self _needsLinkElementTextCSSQuirk]);
2363     settings.setNeedsKeyboardEventDisambiguationQuirks([self _needsKeyboardEventDisambiguationQuirks]);
2364     settings.setEnforceCSSMIMETypeInNoQuirksMode(!WKAppVersionCheckLessThan(@"com.apple.iWeb", -1, 2.1));
2365     settings.setNeedsIsLoadingInAPISenseQuirk([self _needsIsLoadingInAPISenseQuirk]);
2366     settings.setTextAreasAreResizable([preferences textAreasAreResizable]);
2367     settings.setExperimentalNotificationsEnabled([preferences experimentalNotificationsEnabled]);
2368     settings.setShowsURLsInToolTips([preferences showsURLsInToolTips]);
2369     settings.setShowsToolTipOverTruncatedText([preferences showsToolTipOverTruncatedText]);
2370     settings.setQTKitEnabled([preferences isQTKitEnabled]);
2371
2372     // FIXME: Should we enable this following <rdar://problem/15290404>?
2373     settings.setMultithreadedWebGLEnabled([preferences multithreadedWebGLEnabled]);
2374 #endif // PLATFORM(MAC)
2375
2376 #if ENABLE(SQL_DATABASE)
2377     DatabaseManager::manager().setIsAvailable([preferences databasesEnabled]);
2378 #endif
2379
2380 #if ENABLE(MEDIA_SOURCE)
2381     settings.setMediaSourceEnabled([preferences mediaSourceEnabled]);
2382 #endif
2383
2384 #if ENABLE(SERVICE_CONTROLS)
2385     settings.setImageControlsEnabled([preferences imageControlsEnabled]);
2386 #endif
2387
2388 #if ENABLE(VIDEO_TRACK)
2389     settings.setShouldDisplaySubtitles([preferences shouldDisplaySubtitles]);
2390     settings.setShouldDisplayCaptions([preferences shouldDisplayCaptions]);
2391     settings.setShouldDisplayTextDescriptions([preferences shouldDisplayTextDescriptions]);
2392 #endif
2393
2394 #if USE(AVFOUNDATION)
2395     settings.setAVFoundationEnabled([preferences isAVFoundationEnabled]);
2396 #endif
2397
2398 #if ENABLE(WEB_AUDIO)
2399     settings.setWebAudioEnabled([preferences webAudioEnabled]);
2400 #endif
2401
2402 #if ENABLE(FULLSCREEN_API)
2403     settings.setFullScreenEnabled([preferences fullScreenEnabled]);
2404 #endif
2405
2406 #if ENABLE(HIDDEN_PAGE_DOM_TIMER_THROTTLING)
2407     settings.setHiddenPageDOMTimerThrottlingEnabled([preferences hiddenPageDOMTimerThrottlingEnabled]);
2408 #endif
2409
2410 #if ENABLE(PAGE_VISIBILITY_API)
2411     settings.setHiddenPageCSSAnimationSuspensionEnabled([preferences hiddenPageCSSAnimationSuspensionEnabled]);
2412 #endif
2413
2414     NSTimeInterval timeout = [preferences incrementalRenderingSuppressionTimeoutInSeconds];
2415     if (timeout > 0)
2416         settings.setIncrementalRenderingSuppressionTimeoutInSeconds(timeout);
2417
2418     // Application Cache Preferences are stored on the global cache storage manager, not in Settings.
2419     [WebApplicationCache setDefaultOriginQuota:[preferences applicationCacheDefaultOriginQuota]];
2420
2421     BOOL zoomsTextOnly = [preferences zoomsTextOnly];
2422     if (_private->zoomsTextOnly != zoomsTextOnly)
2423         [self _setZoomMultiplier:_private->zoomMultiplier isTextOnly:zoomsTextOnly];
2424
2425 #if ENABLE(DISK_IMAGE_CACHE) && PLATFORM(IOS)
2426     DiskImageCache& diskImageCache = WebCore::diskImageCache();
2427     diskImageCache.setEnabled([preferences diskImageCacheEnabled]);
2428     diskImageCache.setMinimumImageSize([preferences diskImageCacheMinimumImageSize]);
2429     diskImageCache.setMaximumCacheSize([preferences diskImageCacheMaximumCacheSize]);
2430 #endif
2431
2432 #if PLATFORM(IOS)
2433     [[self window] setTileBordersVisible:[preferences showDebugBorders]];
2434     [[self window] setTilePaintCountsVisible:[preferences showRepaintCounter]];
2435     [[self window] setAcceleratedDrawingEnabled:[preferences acceleratedDrawingEnabled]];
2436     [WAKView _setInterpolationQuality:[preferences _interpolationQuality]];
2437 #endif
2438 }
2439
2440 static inline IMP getMethod(id o, SEL s)
2441 {
2442     return [o respondsToSelector:s] ? [o methodForSelector:s] : 0;
2443 }
2444
2445 #if PLATFORM(IOS)
2446 - (id)_UIKitDelegateForwarder
2447 {
2448     if (_private->closing)
2449         return nil;
2450
2451     if (!_private->UIKitDelegateForwarder)
2452         _private->UIKitDelegateForwarder = [[_WebSafeForwarder alloc] initWithTarget:_private->UIKitDelegate defaultTarget:[WebDefaultUIKitDelegate sharedUIKitDelegate]];
2453     return _private->UIKitDelegateForwarder;
2454 }
2455 #endif
2456
2457 - (void)_cacheResourceLoadDelegateImplementations
2458 {
2459     WebResourceDelegateImplementationCache *cache = &_private->resourceLoadDelegateImplementations;
2460     id delegate = _private->resourceProgressDelegate;
2461
2462     if (!delegate) {
2463         bzero(cache, sizeof(WebResourceDelegateImplementationCache));
2464         return;
2465     }
2466
2467     cache->didCancelAuthenticationChallengeFunc = getMethod(delegate, @selector(webView:resource:didCancelAuthenticationChallenge:fromDataSource:));
2468     cache->didFailLoadingWithErrorFromDataSourceFunc = getMethod(delegate, @selector(webView:resource:didFailLoadingWithError:fromDataSource:));
2469     cache->didFinishLoadingFromDataSourceFunc = getMethod(delegate, @selector(webView:resource:didFinishLoadingFromDataSource:));
2470     cache->didLoadResourceFromMemoryCacheFunc = getMethod(delegate, @selector(webView:didLoadResourceFromMemoryCache:response:length:fromDataSource:));
2471     cache->didReceiveAuthenticationChallengeFunc = getMethod(delegate, @selector(webView:resource:didReceiveAuthenticationChallenge:fromDataSource:));
2472 #if USE(PROTECTION_SPACE_AUTH_CALLBACK)
2473     cache->canAuthenticateAgainstProtectionSpaceFunc = getMethod(delegate, @selector(webView:resource:canAuthenticateAgainstProtectionSpace:forDataSource:));
2474 #endif
2475
2476 #if PLATFORM(IOS)
2477     cache->connectionPropertiesFunc = getMethod(delegate, @selector(webView:connectionPropertiesForResource:dataSource:));
2478     cache->webThreadDidFinishLoadingFromDataSourceFunc = getMethod(delegate, @selector(webThreadWebView:resource:didFinishLoadingFromDataSource:));
2479     cache->webThreadDidFailLoadingWithErrorFromDataSourceFunc = getMethod(delegate, @selector(webThreadWebView:resource:didFailLoadingWithError:fromDataSource:));
2480     cache->webThreadIdentifierForRequestFunc = getMethod(delegate, @selector(webThreadWebView:identifierForInitialRequest:fromDataSource:));
2481     cache->webThreadDidLoadResourceFromMemoryCacheFunc = getMethod(delegate, @selector(webThreadWebView:didLoadResourceFromMemoryCache:response:length:fromDataSource:));
2482     cache->webThreadWillSendRequestFunc = getMethod(delegate, @selector(webThreadWebView:resource:willSendRequest:redirectResponse:fromDataSource:));
2483     cache->webThreadDidReceiveResponseFunc = getMethod(delegate, @selector(webThreadWebView:resource:didReceiveResponse:fromDataSource:));
2484     cache->webThreadDidReceiveContentLengthFunc = getMethod(delegate, @selector(webThreadWebView:resource:didReceiveContentLength:fromDataSource:));
2485     cache->webThreadWillCacheResponseFunc = getMethod(delegate, @selector(webThreadWebView:resource:willCacheResponse:fromDataSource:));
2486 #endif
2487
2488     cache->didReceiveContentLengthFunc = getMethod(delegate, @selector(webView:resource:didReceiveContentLength:fromDataSource:));
2489     cache->didReceiveResponseFunc = getMethod(delegate, @selector(webView:resource:didReceiveResponse:fromDataSource:));
2490     cache->identifierForRequestFunc = getMethod(delegate, @selector(webView:identifierForInitialRequest:fromDataSource:));
2491     cache->plugInFailedWithErrorFunc = getMethod(delegate, @selector(webView:plugInFailedWithError:dataSource:));
2492     cache->willCacheResponseFunc = getMethod(delegate, @selector(webView:resource:willCacheResponse:fromDataSource:));
2493     cache->willSendRequestFunc = getMethod(delegate, @selector(webView:resource:willSendRequest:redirectResponse:fromDataSource:));
2494     cache->shouldUseCredentialStorageFunc = getMethod(delegate, @selector(webView:resource:shouldUseCredentialStorageForDataSource:));
2495     cache->shouldPaintBrokenImageForURLFunc = getMethod(delegate, @selector(webView:shouldPaintBrokenImageForURL:));
2496 }
2497
2498 - (void)_cacheFrameLoadDelegateImplementations
2499 {
2500     WebFrameLoadDelegateImplementationCache *cache = &_private->frameLoadDelegateImplementations;
2501     id delegate = _private->frameLoadDelegate;
2502
2503     if (!delegate) {
2504         bzero(cache, sizeof(WebFrameLoadDelegateImplementationCache));
2505         return;
2506     }
2507
2508     cache->didCancelClientRedirectForFrameFunc = getMethod(delegate, @selector(webView:didCancelClientRedirectForFrame:));
2509     cache->didChangeLocationWithinPageForFrameFunc = getMethod(delegate, @selector(webView:didChangeLocationWithinPageForFrame:));
2510     cache->didPushStateWithinPageForFrameFunc = getMethod(delegate, @selector(webView:didPushStateWithinPageForFrame:));
2511     cache->didReplaceStateWithinPageForFrameFunc = getMethod(delegate, @selector(webView:didReplaceStateWithinPageForFrame:));
2512     cache->didPopStateWithinPageForFrameFunc = getMethod(delegate, @selector(webView:didPopStateWithinPageForFrame:));
2513 #if JSC_OBJC_API_ENABLED
2514     cache->didCreateJavaScriptContextForFrameFunc = getMethod(delegate, @selector(webView:didCreateJavaScriptContext:forFrame:));
2515 #endif
2516     cache->didClearWindowObjectForFrameFunc = getMethod(delegate, @selector(webView:didClearWindowObject:forFrame:));
2517     cache->didClearWindowObjectForFrameInScriptWorldFunc = getMethod(delegate, @selector(webView:didClearWindowObjectForFrame:inScriptWorld:));
2518     cache->didClearInspectorWindowObjectForFrameFunc = getMethod(delegate, @selector(webView:didClearInspectorWindowObject:forFrame:));
2519     cache->didCommitLoadForFrameFunc = getMethod(delegate, @selector(webView:didCommitLoadForFrame:));
2520     cache->didFailLoadWithErrorForFrameFunc = getMethod(delegate, @selector(webView:didFailLoadWithError:forFrame:));
2521     cache->didFailProvisionalLoadWithErrorForFrameFunc = getMethod(delegate, @selector(webView:didFailProvisionalLoadWithError:forFrame:));
2522     cache->didFinishDocumentLoadForFrameFunc = getMethod(delegate, @selector(webView:didFinishDocumentLoadForFrame:));
2523     cache->didFinishLoadForFrameFunc = getMethod(delegate, @selector(webView:didFinishLoadForFrame:));
2524     cache->didFirstLayoutInFrameFunc = getMethod(delegate, @selector(webView:didFirstLayoutInFrame:));
2525     cache->didFirstVisuallyNonEmptyLayoutInFrameFunc = getMethod(delegate, @selector(webView:didFirstVisuallyNonEmptyLayoutInFrame:));
2526     cache->didLayoutFunc = getMethod(delegate, @selector(webView:didLayout:));
2527     cache->didHandleOnloadEventsForFrameFunc = getMethod(delegate, @selector(webView:didHandleOnloadEventsForFrame:));
2528 #if ENABLE(ICONDATABASE)
2529     cache->didReceiveIconForFrameFunc = getMethod(delegate, @selector(webView:didReceiveIcon:forFrame:));
2530 #endif
2531     cache->didReceiveServerRedirectForProvisionalLoadForFrameFunc = getMethod(delegate, @selector(webView:didReceiveServerRedirectForProvisionalLoadForFrame:));
2532     cache->didReceiveTitleForFrameFunc = getMethod(delegate, @selector(webView:didReceiveTitle:forFrame:));
2533     cache->didStartProvisionalLoadForFrameFunc = getMethod(delegate, @selector(webView:didStartProvisionalLoadForFrame:));
2534     cache->willCloseFrameFunc = getMethod(delegate, @selector(webView:willCloseFrame:));
2535     cache->willPerformClientRedirectToURLDelayFireDateForFrameFunc = getMethod(delegate, @selector(webView:willPerformClientRedirectToURL:delay:fireDate:forFrame:));
2536     cache->windowScriptObjectAvailableFunc = getMethod(delegate, @selector(webView:windowScriptObjectAvailable:));
2537     cache->didDisplayInsecureContentFunc = getMethod(delegate, @selector(webViewDidDisplayInsecureContent:));
2538     cache->didRunInsecureContentFunc = getMethod(delegate, @selector(webView:didRunInsecureContent:));
2539     cache->didDetectXSSFunc = getMethod(delegate, @selector(webView:didDetectXSS:));
2540     cache->didRemoveFrameFromHierarchyFunc = getMethod(delegate, @selector(webView:didRemoveFrameFromHierarchy:));
2541 #if PLATFORM(IOS)
2542     cache->webThreadDidLayoutFunc = getMethod(delegate, @selector(webThreadWebView:didLayout:));
2543 #endif
2544
2545     // It would be nice to get rid of this code and transition all clients to using didLayout instead of
2546     // didFirstLayoutInFrame and didFirstVisuallyNonEmptyLayoutInFrame. In the meantime, this is required
2547     // for backwards compatibility.
2548     Page* page = core(self);
2549     if (page) {
2550         unsigned milestones = DidFirstLayout;
2551 #if PLATFORM(IOS)
2552         milestones |= DidFirstVisuallyNonEmptyLayout;
2553 #else
2554         if (cache->didFirstVisuallyNonEmptyLayoutInFrameFunc)
2555             milestones |= DidFirstVisuallyNonEmptyLayout;
2556 #endif
2557         page->addLayoutMilestones(static_cast<LayoutMilestones>(milestones));
2558     }
2559 }
2560
2561 - (void)_cacheScriptDebugDelegateImplementations
2562 {
2563     WebScriptDebugDelegateImplementationCache *cache = &_private->scriptDebugDelegateImplementations;
2564     id delegate = _private->scriptDebugDelegate;
2565
2566     if (!delegate) {
2567         bzero(cache, sizeof(WebScriptDebugDelegateImplementationCache));
2568         return;
2569     }
2570
2571     cache->didParseSourceFunc = getMethod(delegate, @selector(webView:didParseSource:baseLineNumber:fromURL:sourceId:forWebFrame:));
2572     if (cache->didParseSourceFunc)
2573         cache->didParseSourceExpectsBaseLineNumber = YES;
2574     else {
2575         cache->didParseSourceExpectsBaseLineNumber = NO;
2576         cache->didParseSourceFunc = getMethod(delegate, @selector(webView:didParseSource:fromURL:sourceId:forWebFrame:));
2577     }
2578
2579     cache->failedToParseSourceFunc = getMethod(delegate, @selector(webView:failedToParseSource:baseLineNumber:fromURL:withError:forWebFrame:));
2580
2581     cache->exceptionWasRaisedFunc = getMethod(delegate, @selector(webView:exceptionWasRaised:hasHandler:sourceId:line:forWebFrame:));
2582     if (cache->exceptionWasRaisedFunc)
2583         cache->exceptionWasRaisedExpectsHasHandlerFlag = YES;
2584     else {
2585         cache->exceptionWasRaisedExpectsHasHandlerFlag = NO;
2586         cache->exceptionWasRaisedFunc = getMethod(delegate, @selector(webView:exceptionWasRaised:sourceId:line:forWebFrame:));
2587     }
2588 }
2589
2590 - (void)_cacheHistoryDelegateImplementations
2591 {
2592     WebHistoryDelegateImplementationCache *cache = &_private->historyDelegateImplementations;
2593     id delegate = _private->historyDelegate;
2594
2595     if (!delegate) {
2596         bzero(cache, sizeof(WebHistoryDelegateImplementationCache));
2597         return;
2598     }
2599
2600     cache->navigatedFunc = getMethod(delegate, @selector(webView:didNavigateWithNavigationData:inFrame:));
2601     cache->clientRedirectFunc = getMethod(delegate, @selector(webView:didPerformClientRedirectFromURL:toURL:inFrame:));
2602     cache->serverRedirectFunc = getMethod(delegate, @selector(webView:didPerformServerRedirectFromURL:toURL:inFrame:));
2603     cache->deprecatedSetTitleFunc = getMethod(delegate, @selector(webView:updateHistoryTitle:forURL:));
2604     cache->setTitleFunc = getMethod(delegate, @selector(webView:updateHistoryTitle:forURL:inFrame:));
2605     cache->populateVisitedLinksFunc = getMethod(delegate, @selector(populateVisitedLinksForWebView:));
2606 }
2607
2608 - (id)_policyDelegateForwarder
2609 {
2610 #if PLATFORM(IOS)
2611     if (_private->closing)
2612         return nil;
2613 #endif
2614     if (!_private->policyDelegateForwarder)
2615         _private->policyDelegateForwarder = [[_WebSafeForwarder alloc] initWithTarget:_private->policyDelegate defaultTarget:[WebDefaultPolicyDelegate sharedPolicyDelegate]];
2616     return _private->policyDelegateForwarder;
2617 }
2618
2619 - (id)_UIDelegateForwarder
2620 {
2621 #if PLATFORM(IOS)
2622     if (_private->closing)
2623         return nil;
2624 #endif
2625     if (!_private->UIDelegateForwarder)
2626         _private->UIDelegateForwarder = [[_WebSafeForwarder alloc] initWithTarget:_private->UIDelegate defaultTarget:[WebDefaultUIDelegate sharedUIDelegate]];
2627     return _private->UIDelegateForwarder;
2628 }
2629
2630 #if PLATFORM(IOS)
2631 - (id)_UIDelegateForSelector:(SEL)selector
2632 {
2633     id delegate = self->_private->UIDelegate;
2634     if ([delegate respondsToSelector:selector])
2635         return delegate;
2636
2637     delegate = [WebDefaultUIDelegate sharedUIDelegate];
2638     if ([delegate respondsToSelector:selector])
2639         return delegate;
2640
2641     return nil;
2642 }
2643 #endif
2644
2645 - (id)_editingDelegateForwarder
2646 {
2647 #if PLATFORM(IOS)
2648     if (_private->closing)
2649         return nil;
2650 #endif
2651     // This can be called during window deallocation by QTMovieView in the QuickTime Cocoa Plug-in.
2652     // Not sure if that is a bug or not.
2653     if (!_private)
2654         return nil;
2655
2656     if (!_private->editingDelegateForwarder)
2657         _private->editingDelegateForwarder = [[_WebSafeForwarder alloc] initWithTarget:_private->editingDelegate defaultTarget:[WebDefaultEditingDelegate sharedEditingDelegate]];
2658     return _private->editingDelegateForwarder;
2659 }
2660
2661 - (void)_closeWindow
2662 {
2663     [[self _UIDelegateForwarder] webViewClose:self];
2664 }
2665
2666 + (void)_unregisterViewClassAndRepresentationClassForMIMEType:(NSString *)MIMEType
2667 {
2668     [[WebFrameView _viewTypesAllowImageTypeOmission:NO] removeObjectForKey:MIMEType];
2669     [[WebDataSource _repTypesAllowImageTypeOmission:NO] removeObjectForKey:MIMEType];
2670
2671     // FIXME: We also need to maintain MIMEType registrations (which can be dynamically changed)
2672     // in the WebCore MIMEType registry.  For now we're doing this in a safe, limited manner
2673     // to fix <rdar://problem/5372989> - a future revamping of the entire system is neccesary for future robustness
2674     MIMETypeRegistry::getSupportedNonImageMIMETypes().remove(MIMEType);
2675 }
2676
2677 + (void)_registerViewClass:(Class)viewClass representationClass:(Class)representationClass forURLScheme:(NSString *)URLScheme
2678 {
2679     NSString *MIMEType = [self _generatedMIMETypeForURLScheme:URLScheme];
2680     [self registerViewClass:viewClass representationClass:representationClass forMIMEType:MIMEType];
2681
2682     // FIXME: We also need to maintain MIMEType registrations (which can be dynamically changed)
2683     // in the WebCore MIMEType registry.  For now we're doing this in a safe, limited manner
2684     // to fix <rdar://problem/5372989> - a future revamping of the entire system is neccesary for future robustness
2685     if ([viewClass class] == [WebHTMLView class])
2686         MIMETypeRegistry::getSupportedNonImageMIMETypes().add(MIMEType);
2687
2688     // This is used to make _representationExistsForURLScheme faster.
2689     // Without this set, we'd have to create the MIME type each time.
2690     if (schemesWithRepresentationsSet == nil) {
2691         schemesWithRepresentationsSet = [[NSMutableSet alloc] init];
2692     }
2693     [schemesWithRepresentationsSet addObject:[[[URLScheme lowercaseString] copy] autorelease]];
2694 }
2695
2696 + (NSString *)_generatedMIMETypeForURLScheme:(NSString *)URLScheme
2697 {
2698     return [@"x-apple-web-kit/" stringByAppendingString:[URLScheme lowercaseString]];
2699 }
2700
2701 + (BOOL)_representationExistsForURLScheme:(NSString *)URLScheme
2702 {
2703     return [schemesWithRepresentationsSet containsObject:[URLScheme lowercaseString]];
2704 }
2705
2706 + (BOOL)_canHandleRequest:(NSURLRequest *)request forMainFrame:(BOOL)forMainFrame
2707 {
2708     // FIXME: If <rdar://problem/5217309> gets fixed, this check can be removed.
2709     if (!request)
2710         return NO;
2711
2712     if ([NSURLConnection canHandleRequest:request])
2713         return YES;
2714
2715     NSString *scheme = [[request URL] scheme];
2716
2717     // Representations for URL schemes work at the top level.
2718     if (forMainFrame && [self _representationExistsForURLScheme:scheme])
2719         return YES;
2720
2721     if ([scheme _webkit_isCaseInsensitiveEqualToString:@"applewebdata"])
2722         return YES;
2723
2724 #if ENABLE(BLOB)
2725     if ([scheme _webkit_isCaseInsensitiveEqualToString:@"blob"])
2726         return YES;
2727 #endif
2728
2729     return NO;
2730 }
2731
2732 + (BOOL)_canHandleRequest:(NSURLRequest *)request
2733 {
2734     return [self _canHandleRequest:request forMainFrame:YES];
2735 }
2736
2737 + (NSString *)_decodeData:(NSData *)data
2738 {
2739     HTMLNames::init(); // this method is used for importing bookmarks at startup, so HTMLNames are likely to be uninitialized yet
2740     return TextResourceDecoder::create("text/html")->decodeAndFlush(static_cast<const char*>([data bytes]), [data length]); // bookmark files are HTML
2741 }
2742
2743 - (void)_pushPerformingProgrammaticFocus
2744 {
2745     _private->programmaticFocusCount++;
2746 }
2747
2748 - (void)_popPerformingProgrammaticFocus
2749 {
2750     _private->programmaticFocusCount--;
2751 }
2752
2753 - (BOOL)_isPerformingProgrammaticFocus
2754 {
2755     return _private->programmaticFocusCount != 0;
2756 }
2757
2758 #if !PLATFORM(IOS)
2759 - (void)_didChangeValueForKey: (NSString *)key
2760 {
2761     LOG (Bindings, "calling didChangeValueForKey: %@", key);
2762     [self didChangeValueForKey: key];
2763 }
2764
2765 - (void)_willChangeValueForKey: (NSString *)key
2766 {
2767     LOG (Bindings, "calling willChangeValueForKey: %@", key);
2768     [self willChangeValueForKey: key];
2769 }
2770
2771 + (BOOL)automaticallyNotifiesObserversForKey:(NSString *)key {
2772     static NSSet *manualNotifyKeys = nil;
2773     if (!manualNotifyKeys)
2774         manualNotifyKeys = [[NSSet alloc] initWithObjects:_WebMainFrameURLKey, _WebIsLoadingKey, _WebEstimatedProgressKey,
2775             _WebCanGoBackKey, _WebCanGoForwardKey, _WebMainFrameTitleKey, _WebMainFrameIconKey, _WebMainFrameDocumentKey,
2776             nil];
2777     if ([manualNotifyKeys containsObject:key])
2778         return NO;
2779     return YES;
2780 }
2781
2782 - (NSArray *)_declaredKeys {
2783     static NSArray *declaredKeys = nil;
2784     if (!declaredKeys)
2785         declaredKeys = [[NSArray alloc] initWithObjects:_WebMainFrameURLKey, _WebIsLoadingKey, _WebEstimatedProgressKey,
2786             _WebCanGoBackKey, _WebCanGoForwardKey, _WebMainFrameTitleKey, _WebMainFrameIconKey, _WebMainFrameDocumentKey, nil];
2787     return declaredKeys;
2788 }
2789
2790 - (void)setObservationInfo:(void *)info
2791 {
2792     _private->observationInfo = info;
2793 }
2794
2795 - (void *)observationInfo
2796 {
2797     return _private->observationInfo;
2798 }
2799
2800 - (void)_willChangeBackForwardKeys
2801 {
2802     [self _willChangeValueForKey: _WebCanGoBackKey];
2803     [self _willChangeValueForKey: _WebCanGoForwardKey];
2804 }
2805
2806 - (void)_didChangeBackForwardKeys
2807 {
2808     [self _didChangeValueForKey: _WebCanGoBackKey];
2809     [self _didChangeValueForKey: _WebCanGoForwardKey];
2810 }
2811
2812 - (void)_didStartProvisionalLoadForFrame:(WebFrame *)frame
2813 {
2814     if (needsSelfRetainWhileLoadingQuirk())
2815         [self retain];
2816
2817     [self _willChangeBackForwardKeys];
2818     if (frame == [self mainFrame]){
2819         // Force an observer update by sending a will/did.
2820         [self _willChangeValueForKey: _WebIsLoadingKey];
2821         [self _didChangeValueForKey: _WebIsLoadingKey];
2822
2823         [self _willChangeValueForKey: _WebMainFrameURLKey];
2824     }
2825
2826     [NSApp setWindowsNeedUpdate:YES];
2827
2828 #if ENABLE(FULLSCREEN_API)
2829     Document* document = core([frame DOMDocument]);
2830     if (Element* element = document ? document->webkitCurrentFullScreenElement() : 0) {
2831         SEL selector = @selector(webView:closeFullScreenWithListener:);
2832         if (_private->UIDelegate && [_private->UIDelegate respondsToSelector:selector]) {
2833             WebKitFullScreenListener *listener = [[WebKitFullScreenListener alloc] initWithElement:element];
2834             CallUIDelegate(self, selector, listener);
2835             [listener release];
2836         } else if (_private->newFullscreenController && [_private->newFullscreenController isFullScreen]) {
2837             [_private->newFullscreenController close];
2838         }
2839     }
2840 #endif
2841 }
2842
2843 - (void)_checkDidPerformFirstNavigation
2844 {
2845     if (_private->_didPerformFirstNavigation)
2846         return;
2847
2848     Page* page = _private->page;
2849     if (!page)
2850         return;
2851
2852     auto& backForwardController = page->backForward();
2853
2854     if (!backForwardController.backItem())
2855         return;
2856
2857     _private->_didPerformFirstNavigation = YES;
2858
2859     if (_private->preferences.automaticallyDetectsCacheModel && _private->preferences.cacheModel < WebCacheModelDocumentBrowser)
2860         _private->preferences.cacheModel = WebCacheModelDocumentBrowser;
2861 }
2862
2863 - (void)_didCommitLoadForFrame:(WebFrame *)frame
2864 {
2865     if (frame == [self mainFrame])
2866         [self _didChangeValueForKey: _WebMainFrameURLKey];
2867
2868     [self _checkDidPerformFirstNavigation];
2869
2870     [NSApp setWindowsNeedUpdate:YES];
2871 }
2872
2873 - (void)_didFinishLoadForFrame:(WebFrame *)frame
2874 {
2875     if (needsSelfRetainWhileLoadingQuirk())
2876         [self performSelector:@selector(release) withObject:nil afterDelay:0];
2877
2878     [self _didChangeBackForwardKeys];
2879     if (frame == [self mainFrame]){
2880         // Force an observer update by sending a will/did.
2881         [self _willChangeValueForKey: _WebIsLoadingKey];
2882         [self _didChangeValueForKey: _WebIsLoadingKey];
2883     }
2884     [NSApp setWindowsNeedUpdate:YES];
2885 }
2886
2887 - (void)_didFailLoadWithError:(NSError *)error forFrame:(WebFrame *)frame
2888 {
2889     if (needsSelfRetainWhileLoadingQuirk())
2890         [self performSelector:@selector(release) withObject:nil afterDelay:0];
2891
2892     [self _didChangeBackForwardKeys];
2893     if (frame == [self mainFrame]){
2894         // Force an observer update by sending a will/did.
2895         [self _willChangeValueForKey: _WebIsLoadingKey];
2896         [self _didChangeValueForKey: _WebIsLoadingKey];
2897     }
2898     [NSApp setWindowsNeedUpdate:YES];
2899 }
2900
2901 - (void)_didFailProvisionalLoadWithError:(NSError *)error forFrame:(WebFrame *)frame
2902 {
2903     if (needsSelfRetainWhileLoadingQuirk())
2904         [self performSelector:@selector(release) withObject:nil afterDelay:0];
2905
2906     [self _didChangeBackForwardKeys];
2907     if (frame == [self mainFrame]){
2908         // Force an observer update by sending a will/did.
2909         [self _willChangeValueForKey: _WebIsLoadingKey];
2910         [self _didChangeValueForKey: _WebIsLoadingKey];
2911
2912         [self _didChangeValueForKey: _WebMainFrameURLKey];
2913     }
2914     [NSApp setWindowsNeedUpdate:YES];
2915 }
2916
2917 - (NSCachedURLResponse *)_cachedResponseForURL:(NSURL *)URL
2918 {
2919     RetainPtr<NSMutableURLRequest *> request = adoptNS([[NSMutableURLRequest alloc] initWithURL:URL]);
2920     [request _web_setHTTPUserAgent:[self userAgentForURL:URL]];
2921     NSCachedURLResponse *cachedResponse;
2922
2923     if (!_private->page)
2924         return nil;
2925
2926     if (CFURLStorageSessionRef storageSession = _private->page->mainFrame().loader().networkingContext()->storageSession().platformSession())
2927         cachedResponse = WKCachedResponseForRequest(storageSession, request.get());
2928     else
2929         cachedResponse = [[NSURLCache sharedURLCache] cachedResponseForRequest:request.get()];
2930
2931     return cachedResponse;
2932 }
2933
2934 - (void)_writeImageForElement:(NSDictionary *)element withPasteboardTypes:(NSArray *)types toPasteboard:(NSPasteboard *)pasteboard
2935 {
2936     NSURL *linkURL = [element objectForKey:WebElementLinkURLKey];
2937     DOMElement *domElement = [element objectForKey:WebElementDOMNodeKey];
2938     [pasteboard _web_writeImage:(NSImage *)(domElement ? nil : [element objectForKey:WebElementImageKey])
2939                         element:domElement
2940                             URL:linkURL ? linkURL : (NSURL *)[element objectForKey:WebElementImageURLKey]
2941                           title:[element objectForKey:WebElementImageAltStringKey]
2942                         archive:[[element objectForKey:WebElementDOMNodeKey] webArchive]
2943                           types:types
2944                          source:nil];
2945 }
2946
2947 - (void)_writeLinkElement:(NSDictionary *)element withPasteboardTypes:(NSArray *)types toPasteboard:(NSPasteboard *)pasteboard
2948 {
2949     [pasteboard _web_writeURL:[element objectForKey:WebElementLinkURLKey]
2950                      andTitle:[element objectForKey:WebElementLinkLabelKey]
2951                         types:types];
2952 }
2953
2954 #if ENABLE(DRAG_SUPPORT)
2955 - (void)_setInitiatedDrag:(BOOL)initiatedDrag
2956 {
2957     if (!_private->page)
2958         return;
2959     _private->page->dragController().setDidInitiateDrag(initiatedDrag);
2960 }
2961 #endif
2962
2963 #else
2964
2965 - (void)_didCommitLoadForFrame:(WebFrame *)frame
2966 {
2967     if (frame == [self mainFrame])
2968         _private->didDrawTiles = 0;
2969 }
2970
2971 #endif // PLATFORM(IOS)
2972
2973 #if ENABLE(DASHBOARD_SUPPORT)
2974
2975 #define DASHBOARD_CONTROL_LABEL @"control"
2976
2977 - (void)_addControlRect:(NSRect)bounds clip:(NSRect)clip fromView:(NSView *)view toDashboardRegions:(NSMutableDictionary *)regions
2978 {
2979     NSRect adjustedBounds = bounds;
2980     adjustedBounds.origin = [self convertPoint:bounds.origin fromView:view];
2981     adjustedBounds.origin.y = [self bounds].size.height - adjustedBounds.origin.y;
2982     adjustedBounds.size = bounds.size;
2983
2984     NSRect adjustedClip;
2985     adjustedClip.origin = [self convertPoint:clip.origin fromView:view];
2986     adjustedClip.origin.y = [self bounds].size.height - adjustedClip.origin.y;
2987     adjustedClip.size = clip.size;
2988
2989     WebDashboardRegion *region = [[WebDashboardRegion alloc] initWithRect:adjustedBounds
2990         clip:adjustedClip type:WebDashboardRegionTypeScrollerRectangle];
2991     NSMutableArray *scrollerRegions = [regions objectForKey:DASHBOARD_CONTROL_LABEL];
2992     if (!scrollerRegions) {
2993         scrollerRegions = [[NSMutableArray alloc] init];
2994         [regions setObject:scrollerRegions forKey:DASHBOARD_CONTROL_LABEL];
2995         [scrollerRegions release];
2996     }
2997     [scrollerRegions addObject:region];
2998     [region release];
2999 }
3000
3001 - (void)_addScrollerDashboardRegionsForFrameView:(FrameView*)frameView dashboardRegions:(NSMutableDictionary *)regions
3002 {
3003     NSView *documentView = [[kit(&frameView->frame()) frameView] documentView];
3004
3005     for (const auto& widget: frameView->children()) {
3006         if (widget->isFrameView()) {
3007             [self _addScrollerDashboardRegionsForFrameView:toFrameView(widget.get()) dashboardRegions:regions];
3008             continue;
3009         }
3010
3011         if (!widget->isScrollbar())
3012             continue;
3013
3014         // FIXME: This should really pass an appropriate clip, but our first try got it wrong, and
3015         // it's not common to need this to be correct in Dashboard widgets.
3016         NSRect bounds = widget->frameRect();
3017         [self _addControlRect:bounds clip:bounds fromView:documentView toDashboardRegions:regions];
3018     }
3019 }
3020
3021 - (void)_addScrollerDashboardRegions:(NSMutableDictionary *)regions from:(NSArray *)views
3022 {
3023     // Add scroller regions for NSScroller and WebCore scrollbars
3024     NSUInteger count = [views count];
3025     for (NSUInteger i = 0; i < count; i++) {
3026         NSView *view = [views objectAtIndex:i];
3027
3028         if ([view isKindOfClass:[WebHTMLView class]]) {
3029             if (Frame* coreFrame = core([(WebHTMLView*)view _frame])) {
3030                 if (FrameView* coreView = coreFrame->view())
3031                     [self _addScrollerDashboardRegionsForFrameView:coreView dashboardRegions:regions];
3032             }
3033         } else if ([view isKindOfClass:[NSScroller class]]) {
3034             // AppKit places absent scrollers at -100,-100
3035             if ([view frame].origin.y < 0)
3036                 continue;
3037             [self _addControlRect:[view bounds] clip:[view visibleRect] fromView:view toDashboardRegions:regions];
3038         }
3039         [self _addScrollerDashboardRegions:regions from:[view subviews]];
3040     }
3041 }
3042
3043 - (void)_addScrollerDashboardRegions:(NSMutableDictionary *)regions
3044 {
3045     [self _addScrollerDashboardRegions:regions from:[self subviews]];
3046 }
3047
3048 - (NSDictionary *)_dashboardRegions
3049 {
3050     // Only return regions from main frame.
3051     Frame* mainFrame = [self _mainCoreFrame];
3052     if (!mainFrame)
3053         return nil;
3054
3055     const Vector<AnnotatedRegionValue>& regions = mainFrame->document()->annotatedRegions();
3056     size_t size = regions.size();
3057
3058     NSMutableDictionary *webRegions = [NSMutableDictionary dictionaryWithCapacity:size];
3059     for (size_t i = 0; i < size; i++) {
3060         const AnnotatedRegionValue& region = regions[i];
3061
3062         if (region.type == StyleDashboardRegion::None)
3063             continue;
3064
3065         NSString *label = region.label;
3066         WebDashboardRegionType type = WebDashboardRegionTypeNone;
3067         if (region.type == StyleDashboardRegion::Circle)
3068             type = WebDashboardRegionTypeCircle;
3069         else if (region.type == StyleDashboardRegion::Rectangle)
3070             type = WebDashboardRegionTypeRectangle;
3071         NSMutableArray *regionValues = [webRegions objectForKey:label];
3072         if (!regionValues) {
3073             regionValues = [[NSMutableArray alloc] initWithCapacity:1];
3074             [webRegions setObject:regionValues forKey:label];
3075             [regionValues release];
3076         }
3077
3078         WebDashboardRegion *webRegion = [[WebDashboardRegion alloc] initWithRect:pixelSnappedIntRect(region.bounds) clip:pixelSnappedIntRect(region.clip) type:type];
3079         [regionValues addObject:webRegion];
3080         [webRegion release];
3081     }
3082
3083     [self _addScrollerDashboardRegions:webRegions];
3084
3085     return webRegions;
3086 }
3087
3088 - (void)_setDashboardBehavior:(WebDashboardBehavior)behavior to:(BOOL)flag
3089 {
3090     // FIXME: Remove this blanket assignment once Dashboard and Dashcode implement
3091     // specific support for the backward compatibility mode flag.
3092     if (behavior == WebDashboardBehaviorAllowWheelScrolling && flag == NO && _private->page)
3093         _private->page->settings().setUsesDashboardBackwardCompatibilityMode(true);
3094
3095     switch (behavior) {
3096         case WebDashboardBehaviorAlwaysSendMouseEventsToAllWindows: {
3097             _private->dashboardBehaviorAlwaysSendMouseEventsToAllWindows = flag;
3098             break;
3099         }
3100         case WebDashboardBehaviorAlwaysSendActiveNullEventsToPlugIns: {
3101             _private->dashboardBehaviorAlwaysSendActiveNullEventsToPlugIns = flag;
3102             break;
3103         }
3104         case WebDashboardBehaviorAlwaysAcceptsFirstMouse: {
3105             _private->dashboardBehaviorAlwaysAcceptsFirstMouse = flag;
3106             break;
3107         }
3108         case WebDashboardBehaviorAllowWheelScrolling: {
3109             _private->dashboardBehaviorAllowWheelScrolling = flag;
3110             break;
3111         }
3112         case WebDashboardBehaviorUseBackwardCompatibilityMode: {
3113             if (_private->page)
3114                 _private->page->settings().setUsesDashboardBackwardCompatibilityMode(flag);
3115 #if ENABLE(LEGACY_CSS_VENDOR_PREFIXES)
3116             RuntimeEnabledFeatures::sharedFeatures().setLegacyCSSVendorPrefixesEnabled(flag);
3117 #endif
3118             break;
3119         }
3120     }
3121
3122     // Pre-HTML5 parser quirks should be enabled if Dashboard is in backward
3123     // compatibility mode. See <rdar://problem/8175982>.
3124     if (_private->page)
3125         _private->page->settings().setUsePreHTML5ParserQuirks([self _needsPreHTML5ParserQuirks]);
3126 }
3127
3128 - (BOOL)_dashboardBehavior:(WebDashboardBehavior)behavior
3129 {
3130     switch (behavior) {
3131         case WebDashboardBehaviorAlwaysSendMouseEventsToAllWindows: {
3132             return _private->dashboardBehaviorAlwaysSendMouseEventsToAllWindows;
3133         }
3134         case WebDashboardBehaviorAlwaysSendActiveNullEventsToPlugIns: {
3135             return _private->dashboardBehaviorAlwaysSendActiveNullEventsToPlugIns;
3136         }
3137         case WebDashboardBehaviorAlwaysAcceptsFirstMouse: {
3138             return _private->dashboardBehaviorAlwaysAcceptsFirstMouse;
3139         }
3140         case WebDashboardBehaviorAllowWheelScrolling: {
3141             return _private->dashboardBehaviorAllowWheelScrolling;
3142         }
3143         case WebDashboardBehaviorUseBackwardCompatibilityMode: {
3144             return _private->page && _private->page->settings().usesDashboardBackwardCompatibilityMode();
3145         }
3146     }
3147     return NO;
3148 }
3149
3150 #endif /* ENABLE(DASHBOARD_SUPPORT) */
3151
3152 + (void)_setShouldUseFontSmoothing:(BOOL)f
3153 {
3154     Font::setShouldUseSmoothing(f);
3155 }
3156
3157 + (BOOL)_shouldUseFontSmoothing
3158 {
3159     return Font::shouldUseSmoothing();
3160 }
3161
3162 #if !PLATFORM(IOS)
3163 + (void)_setUsesTestModeFocusRingColor:(BOOL)f
3164 {
3165     setUsesTestModeFocusRingColor(f);
3166 }
3167
3168 + (BOOL)_usesTestModeFocusRingColor
3169 {
3170     return usesTestModeFocusRingColor();
3171 }
3172 #endif
3173
3174 #if PLATFORM(IOS)
3175 - (void)_setUIKitDelegate:(id)delegate
3176 {
3177     _private->UIKitDelegate = delegate;
3178     [_private->UIKitDelegateForwarder clearTarget];
3179     [_private->UIKitDelegateForwarder release];
3180     _private->UIKitDelegateForwarder = nil;
3181 }
3182
3183 - (id)_UIKitDelegate
3184 {
3185     return _private->UIKitDelegate;
3186 }
3187
3188 - (void)setWebMailDelegate:(id)delegate
3189 {
3190     _private->WebMailDelegate = delegate;
3191 }
3192
3193 - (id)_webMailDelegate
3194 {
3195     return _private->WebMailDelegate;
3196 }
3197
3198 - (id <WebCaretChangeListener>)caretChangeListener
3199 {
3200     return _private->_caretChangeListener;
3201 }
3202
3203 - (void)setCaretChangeListener:(id <WebCaretChangeListener>)listener
3204 {
3205     _private->_caretChangeListener = listener;
3206 }
3207
3208 - (NSSet *)caretChangeListeners
3209 {
3210     return _private->_caretChangeListeners;
3211 }
3212
3213 - (void)addCaretChangeListener:(id <WebCaretChangeListener>)listener
3214 {
3215     if (_private->_caretChangeListeners == nil) {
3216         _private->_caretChangeListeners = [[NSMutableSet alloc] init];
3217     }
3218
3219     [_private->_caretChangeListeners addObject:listener];
3220 }
3221
3222 - (void)removeCaretChangeListener:(id <WebCaretChangeListener>)listener
3223 {
3224     [_private->_caretChangeListeners removeObject:listener];
3225 }
3226
3227 - (void)removeAllCaretChangeListeners
3228 {
3229     [_private->_caretChangeListeners removeAllObjects];
3230 }
3231
3232 - (void)caretChanged
3233 {
3234     [_private->_caretChangeListener caretChanged];
3235     NSSet *copy = [_private->_caretChangeListeners copy];
3236     for (id <WebCaretChangeListener> listener in copy) {
3237         [listener caretChanged];
3238     }
3239     [copy release];
3240 }
3241
3242 - (void)_clearDelegates
3243 {
3244     ASSERT(WebThreadIsLocked() || !WebThreadIsEnabled());
3245
3246     [self _setFormDelegate:nil];
3247     [self _setUIKitDelegate:nil];
3248     [self setCaretChangeListener:nil];
3249     [self removeAllCaretChangeListeners];
3250     [self setWebMailDelegate:nil];
3251
3252     [self setDownloadDelegate:nil];
3253     [self setEditingDelegate:nil];
3254     [self setFrameLoadDelegate:nil];
3255     [self setPolicyDelegate:nil];
3256     [self setResourceLoadDelegate:nil];
3257     [self setScriptDebugDelegate:nil];
3258     [self setUIDelegate:nil];
3259 }
3260
3261 - (NSURL *)_displayURL
3262 {
3263     WebThreadLock();
3264     WebFrame *frame = [self mainFrame];
3265     // FIXME: <rdar://problem/6362369> We used to get provisionalDataSource here if in provisional state; how do we tell that now? Is this right?
3266     WebDataSource *dataSource = [frame provisionalDataSource];
3267     if (!dataSource)
3268         dataSource = [frame dataSource];
3269     NSURL *unreachableURL = [dataSource unreachableURL];
3270     NSURL *URL = unreachableURL != nil ? unreachableURL : [[dataSource request] URL];
3271     [[URL retain] autorelease];
3272     return URL;
3273 }
3274 #endif // PLATFORM(IOS)
3275
3276 #if !PLATFORM(IOS)
3277 - (void)setAlwaysShowVerticalScroller:(BOOL)flag
3278 {
3279     WebDynamicScrollBarsView *scrollview = [[[self mainFrame] frameView] _scrollView];
3280     if (flag) {
3281         [scrollview setVerticalScrollingMode:ScrollbarAlwaysOn andLock:YES];
3282     } else {
3283         [scrollview setVerticalScrollingModeLocked:NO];
3284         [scrollview setVerticalScrollingMode:ScrollbarAuto andLock:NO];
3285     }
3286 }
3287
3288 - (BOOL)alwaysShowVerticalScroller
3289 {
3290     WebDynamicScrollBarsView *scrollview = [[[self mainFrame] frameView] _scrollView];
3291     return [scrollview verticalScrollingModeLocked] && [scrollview verticalScrollingMode] == ScrollbarAlwaysOn;
3292 }
3293
3294 - (void)setAlwaysShowHorizontalScroller:(BOOL)flag
3295 {
3296     WebDynamicScrollBarsView *scrollview = [[[self mainFrame] frameView] _scrollView];
3297     if (flag) {
3298         [scrollview setHorizontalScrollingMode:ScrollbarAlwaysOn andLock:YES];
3299     } else {
3300         [scrollview setHorizontalScrollingModeLocked:NO];
3301         [scrollview setHorizontalScrollingMode:ScrollbarAuto andLock:NO];
3302     }
3303 }
3304
3305 - (void)setProhibitsMainFrameScrolling:(BOOL)prohibits
3306 {
3307     if (Frame* mainFrame = [self _mainCoreFrame])
3308         mainFrame->view()->setProhibitsScrolling(prohibits);
3309 }
3310
3311 - (BOOL)alwaysShowHorizontalScroller
3312 {
3313     WebDynamicScrollBarsView *scrollview = [[[self mainFrame] frameView] _scrollView];
3314     return [scrollview horizontalScrollingModeLocked] && [scrollview horizontalScrollingMode] == ScrollbarAlwaysOn;
3315 }
3316 #endif // !PLATFORM(IOS)
3317
3318 - (void)_setUseFastImageScalingMode:(BOOL)flag
3319 {
3320     if (_private->page && _private->page->inLowQualityImageInterpolationMode() != flag) {
3321         _private->page->setInLowQualityImageInterpolationMode(flag);
3322         [self setNeedsDisplay:YES];
3323     }
3324 }
3325
3326 - (BOOL)_inFastImageScalingMode
3327 {
3328     if (_private->page)
3329         return _private->page->inLowQualityImageInterpolationMode();
3330     return NO;
3331 }
3332
3333 - (BOOL)_cookieEnabled
3334 {
3335     if (_private->page)
3336         return _private->page->settings().cookieEnabled();
3337     return YES;
3338 }
3339
3340 - (void)_setCookieEnabled:(BOOL)enable
3341 {
3342     if (_private->page)
3343         _private->page->settings().setCookieEnabled(enable);
3344 }
3345
3346 #if !PLATFORM(IOS)
3347 - (void)_setAdditionalWebPlugInPaths:(NSArray *)newPaths
3348 {
3349     if (!_private->pluginDatabase)
3350         _private->pluginDatabase = [[WebPluginDatabase alloc] init];
3351
3352     [_private->pluginDatabase setPlugInPaths:newPaths];
3353     [_private->pluginDatabase refresh];
3354 }
3355 #endif
3356
3357 #if PLATFORM(IOS)
3358 - (BOOL)_locked_plugInsAreRunningInFrame:(WebFrame *)frame
3359 {
3360     // Ask plug-ins in this frame
3361     id <WebDocumentView> documentView = [[frame frameView] documentView];
3362     if (documentView && [documentView isKindOfClass:[WebHTMLView class]]) {
3363         if ([[(WebHTMLView *)documentView _pluginController] plugInsAreRunning])
3364             return YES;
3365     }
3366
3367     // Ask plug-ins in child frames
3368     NSArray *childFrames = [frame childFrames];
3369     unsigned childCount = [childFrames count];
3370     unsigned childIndex;
3371     for (childIndex = 0; childIndex < childCount; childIndex++) {
3372         if ([self _locked_plugInsAreRunningInFrame:[childFrames objectAtIndex:childIndex]])
3373             return YES;
3374     }
3375
3376     return NO;
3377 }
3378
3379 - (BOOL)_pluginsAreRunning
3380 {
3381     WebThreadLock();
3382     return [self _locked_plugInsAreRunningInFrame:[self mainFrame]];
3383 }
3384
3385 - (void)_locked_recursivelyPerformPlugInSelector:(SEL)selector inFrame:(WebFrame *)frame
3386 {
3387     // Send the message to plug-ins in this frame
3388     id <WebDocumentView> documentView = [[frame frameView] documentView];
3389     if (documentView && [documentView isKindOfClass:[WebHTMLView class]])
3390         [[(WebHTMLView *)documentView _pluginController] performSelector:selector];
3391
3392     // Send the message to plug-ins in child frames
3393     NSArray *childFrames = [frame childFrames];
3394     unsigned childCount = [childFrames count];
3395     unsigned childIndex;
3396     for (childIndex = 0; childIndex < childCount; childIndex++) {
3397         [self _locked_recursivelyPerformPlugInSelector:selector inFrame:[childFrames objectAtIndex:childIndex]];
3398     }
3399 }
3400
3401 - (void)_destroyAllPlugIns
3402 {
3403     WebThreadLock();
3404     [self _locked_recursivelyPerformPlugInSelector:@selector(destroyAllPlugins) inFrame:[self mainFrame]];
3405 }
3406
3407 - (void)_clearBackForwardCache
3408 {
3409     WebThreadRun(^{
3410         WebKit::MemoryMeasure measurer("[WebView _clearBackForwardCache]");
3411         BackForwardList* bfList = core([self backForwardList]);
3412         if (!bfList)
3413             return;
3414
3415         BOOL didClearBFCache = bfList->clearAllPageCaches();
3416         if (WebKit::MemoryMeasure::isLoggingEnabled())
3417             NSLog(@"[WebView _clearBackForwardCache] %@ empty cache\n", (didClearBFCache ? @"DID" : @"did NOT"));
3418     });
3419 }
3420
3421 - (void)_startAllPlugIns
3422 {
3423     WebThreadLock();
3424     [self _locked_recursivelyPerformPlugInSelector:@selector(startAllPlugins) inFrame:[self mainFrame]];
3425 }
3426
3427 - (void)_stopAllPlugIns
3428 {
3429     WebThreadLock();
3430     [self _locked_recursivelyPerformPlugInSelector:@selector(stopAllPlugins) inFrame:[self mainFrame]];
3431 }
3432
3433 - (void)_stopAllPlugInsForPageCache
3434 {
3435     WebThreadLock();
3436     [self _locked_recursivelyPerformPlugInSelector:@selector(stopPluginsForPageCache) inFrame:[self mainFrame]];
3437 }
3438
3439 - (void)_restorePlugInsFromCache
3440 {
3441     WebThreadLock();
3442     [self _locked_recursivelyPerformPlugInSelector:@selector(restorePluginsFromCache) inFrame:[self mainFrame]];
3443 }
3444
3445 - (BOOL)_setMediaLayer:(CALayer*)layer forPluginView:(NSView*)pluginView
3446 {
3447     WebThreadLock();
3448
3449     Frame* mainCoreFrame = [self _mainCoreFrame];
3450     for (Frame* frame = mainCoreFrame; frame; frame = frame->tree().traverseNext()) {
3451         FrameView* coreView = frame ? frame->view() : 0;
3452         if (!coreView)
3453             continue;
3454
3455         // Get the GraphicsLayer for this widget.
3456         GraphicsLayer* layerForWidget = coreView->graphicsLayerForPlatformWidget(pluginView);
3457         if (!layerForWidget)
3458             continue;
3459
3460         if (layerForWidget->contentsLayerForMedia() != layer) {
3461             layerForWidget->setContentsToMedia(layer);
3462             // We need to make sure the layer hierachy change is applied immediately.
3463             if (mainCoreFrame->view())
3464                 mainCoreFrame->view()->flushCompositingStateIncludingSubframes();
3465             return YES;
3466         }
3467     }
3468
3469     return NO;
3470 }
3471
3472 - (void)_setNeedsUnrestrictedGetMatchedCSSRules:(BOOL)flag
3473 {
3474     if (_private->page)
3475         _private->page->settings().setCrossOriginCheckInGetMatchedCSSRulesDisabled(flag);
3476 }
3477 #endif // PLATFORM(IOS)
3478
3479 - (void)_attachScriptDebuggerToAllFrames
3480 {
3481     for (Frame* frame = [self _mainCoreFrame]; frame; frame = frame->tree().traverseNext())
3482         [kit(frame) _attachScriptDebugger];
3483 }
3484
3485 - (void)_detachScriptDebuggerFromAllFrames
3486 {
3487     for (Frame* frame = [self _mainCoreFrame]; frame; frame = frame->tree().traverseNext())
3488         [kit(frame) _detachScriptDebugger];
3489 }
3490
3491 #if !PLATFORM(IOS)
3492 - (void)setBackgroundColor:(NSColor *)backgroundColor
3493 {
3494     if ([_private->backgroundColor isEqual:backgroundColor])
3495         return;
3496
3497     id old = _private->backgroundColor;
3498     _private->backgroundColor = [backgroundColor retain];
3499     [old release];
3500
3501     [[self mainFrame] _updateBackgroundAndUpdatesWhileOffscreen];
3502 }
3503
3504 - (NSColor *)backgroundColor
3505 {
3506     return _private->backgroundColor;
3507 }
3508 #else
3509 - (void)setBackgroundColor:(CGColorRef)backgroundColor
3510 {
3511    if (!backgroundColor || CFEqual(_private->backgroundColor, backgroundColor))
3512         return;
3513
3514     CFTypeRef old = _private->backgroundColor;
3515     CFRetain(backgroundColor);
3516     _private->backgroundColor = backgroundColor;
3517     CFRelease(old);
3518
3519     [[self mainFrame] _updateBackgroundAndUpdatesWhileOffscreen];
3520 }
3521
3522 - (CGColorRef)backgroundColor
3523 {
3524     return _private->backgroundColor;
3525 }
3526 #endif
3527
3528 - (BOOL)defersCallbacks
3529 {
3530     if (!_private->page)
3531         return NO;
3532     return _private->page->defersLoading();
3533 }
3534
3535 - (void)setDefersCallbacks:(BOOL)defer
3536 {
3537     if (!_private->page)
3538         return;
3539     return _private->page->setDefersLoading(defer);
3540 }
3541
3542 #if TARGET_OS_IPHONE && USE(QUICK_LOOK)
3543 - (NSDictionary *)quickLookContentForURL:(NSURL *)url
3544 {
3545     NSString *uti = qlPreviewConverterUTIForURL(url);
3546     if (!uti)
3547         return nil;
3548
3549     NSString *fileName = qlPreviewConverterFileNameForURL(url);
3550     if (!fileName)
3551         return nil;
3552
3553     return [NSDictionary dictionaryWithObjectsAndKeys: fileName, WebQuickLookFileNameKey, uti, WebQuickLookUTIKey, nil];
3554 }
3555 #endif
3556
3557 #if PLATFORM(IOS)
3558 - (BOOL)_isStopping
3559 {
3560     return _private->isStopping;
3561 }
3562
3563 - (BOOL)_isClosing
3564 {
3565     return _private->closing;
3566 }
3567
3568 + (NSArray *)_productivityDocumentMIMETypes
3569 {
3570 #if USE(QUICK_LOOK)
3571     return [QLPreviewGetSupportedMIMETypesSet() allObjects];
3572 #else
3573     return nil;
3574 #endif
3575 }
3576
3577 - (void)_setAllowsMessaging:(BOOL)aFlag
3578 {
3579     _private->allowsMessaging = aFlag;
3580 }
3581
3582 - (BOOL)_allowsMessaging
3583 {
3584     return _private->allowsMessaging;
3585 }
3586
3587 - (void)_setFixedLayoutSize:(CGSize)size
3588 {
3589     ASSERT(WebThreadIsLocked());
3590     _private->fixedLayoutSize = size;
3591     if (Frame* mainFrame = core([self mainFrame])) {
3592         IntSize newSize(size);
3593         mainFrame->view()->setFixedLayoutSize(newSize);
3594         mainFrame->view()->setUseFixedLayout(!newSize.isEmpty());
3595         [self setNeedsDisplay:YES];
3596     }
3597 }
3598
3599 - (CGSize)_fixedLayoutSize
3600 {
3601     return _private->fixedLayoutSize;
3602 }
3603
3604 - (void)_synchronizeCustomFixedPositionLayoutRect
3605 {
3606     ASSERT(WebThreadIsLocked());
3607
3608     IntRect newRect;
3609     {
3610         MutexLocker locker(_private->pendingFixedPositionLayoutRectMutex);
3611         if (CGRectIsNull(_private->pendingFixedPositionLayoutRect))
3612             return;
3613         newRect = enclosingIntRect(_private->pendingFixedPositionLayoutRect);
3614         _private->pendingFixedPositionLayoutRect = CGRectNull;
3615     }
3616