Roll out fix for https://bugs.webkit.org/show_bug.cgi?id=131637:
[WebKit-https.git] / 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::setShouldManageAudioSession(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 }
1582
1583 - (void)_setResourceLoadSchedulerSuspended:(BOOL)suspend
1584 {
1585     if (suspend)
1586         resourceLoadScheduler()->suspendPendingRequests();
1587     else
1588         resourceLoadScheduler()->resumePendingRequests();
1589 }
1590
1591 + (void)_setAcceleratedImageDecoding:(BOOL)enabled
1592 {
1593     ImageSource::setAcceleratedImageDecodingEnabled(enabled);
1594 }
1595
1596 + (BOOL)_acceleratedImageDecoding
1597 {
1598     return ImageSource::acceleratedImageDecodingEnabled();
1599 }
1600
1601 + (void)_setAllowCookies:(BOOL)allow
1602 {
1603     ResourceRequestBase::setDefaultAllowCookies(allow);
1604 }
1605
1606 + (BOOL)_allowCookies
1607 {
1608     return ResourceRequestBase::defaultAllowCookies();
1609 }
1610
1611 + (BOOL)_isUnderMemoryPressure
1612 {
1613     return memoryPressureHandler().isUnderMemoryPressure();
1614 }
1615
1616 + (void)_clearMemoryPressure
1617 {
1618     memoryPressureHandler().clearMemoryPressure();
1619 }
1620
1621 + (BOOL)_shouldWaitForMemoryClearMessage
1622 {
1623     return memoryPressureHandler().shouldWaitForMemoryClearMessage();
1624 }
1625 #endif // PLATFORM(IOS)
1626
1627 - (void)_closePluginDatabases
1628 {
1629     pluginDatabaseClientCount--;
1630
1631     // Close both sets of plug-in databases because plug-ins need an opportunity to clean up files, etc.
1632
1633 #if !PLATFORM(IOS)
1634     // Unload the WebView local plug-in database. 
1635     if (_private->pluginDatabase) {
1636         [_private->pluginDatabase destroyAllPluginInstanceViews];
1637         [_private->pluginDatabase close];
1638         [_private->pluginDatabase release];
1639         _private->pluginDatabase = nil;
1640     }
1641 #endif
1642     
1643     // Keep the global plug-in database active until the app terminates to avoid having to reload plug-in bundles.
1644     if (!pluginDatabaseClientCount && applicationIsTerminating)
1645         [WebPluginDatabase closeSharedDatabase];
1646 }
1647
1648 - (void)_closeWithFastTeardown 
1649 {
1650 #ifndef NDEBUG
1651     WTF::RefCountedLeakCounter::suppressMessages("At least one WebView was closed with fast teardown.");
1652 #endif
1653
1654 #if !PLATFORM(IOS)
1655     [[NSDistributedNotificationCenter defaultCenter] removeObserver:self];
1656 #endif
1657     [[NSNotificationCenter defaultCenter] removeObserver:self];
1658
1659     [self _closePluginDatabases];
1660 }
1661
1662 static bool fastDocumentTeardownEnabled()
1663 {
1664 #ifdef NDEBUG
1665     static bool enabled = ![[NSUserDefaults standardUserDefaults] boolForKey:WebKitEnableFullDocumentTeardownPreferenceKey];
1666 #else
1667     static bool initialized = false;
1668     static bool enabled = false;
1669     if (!initialized) {
1670         // This allows debug builds to default to not have fast teardown, so leak checking still works.
1671         // But still allow the WebKitEnableFullDocumentTeardown default to override it if present.
1672         NSNumber *setting = [[NSUserDefaults standardUserDefaults] objectForKey:WebKitEnableFullDocumentTeardownPreferenceKey];
1673         if (setting)
1674             enabled = ![setting boolValue];
1675         initialized = true;
1676     }
1677 #endif
1678     return enabled;
1679 }
1680
1681 // _close is here only for backward compatibility; clients and subclasses should use
1682 // public method -close instead.
1683 - (void)_close
1684 {
1685 #if PLATFORM(IOS)
1686     // Always clear delegates on calling thread, becasue caller can deallocate delegates right after calling -close
1687     // (and could in fact already be in delegate's -dealloc method, as seen in <rdar://problem/11540972>).
1688
1689     [self _clearDelegates];
1690
1691     // Fix for problems such as <rdar://problem/5774587> Crash closing tab in WebCore::Frame::page() from -[WebCoreFrameBridge pauseTimeouts]
1692     WebThreadRun(^{
1693 #endif            
1694
1695     if (!_private || _private->closed)
1696         return;
1697
1698     [[NSNotificationCenter defaultCenter] postNotificationName:WebViewWillCloseNotification object:self];
1699
1700     _private->closed = YES;
1701     [self _removeFromAllWebViewsSet];
1702
1703 #ifndef NDEBUG
1704     WTF::RefCountedLeakCounter::cancelMessageSuppression(webViewIsOpen);
1705 #endif
1706
1707     // To quit the apps fast we skip document teardown, except plugins
1708     // need to be destroyed and unloaded.
1709     if (applicationIsTerminating && fastDocumentTeardownEnabled()) {
1710         [self _closeWithFastTeardown];
1711         return;
1712     }
1713
1714 #if ENABLE(VIDEO) && !PLATFORM(IOS)
1715     [self _exitFullscreen];
1716 #endif
1717
1718 #if PLATFORM(IOS)
1719     _private->closing = YES;
1720 #endif
1721
1722     if (Frame* mainFrame = [self _mainCoreFrame])
1723         mainFrame->loader().detachFromParent();
1724
1725     [self setHostWindow:nil];
1726
1727 #if !PLATFORM(IOS)
1728     [self setDownloadDelegate:nil];
1729     [self setEditingDelegate:nil];
1730     [self setFrameLoadDelegate:nil];
1731     [self setPolicyDelegate:nil];
1732     [self setResourceLoadDelegate:nil];
1733     [self setScriptDebugDelegate:nil];
1734     [self setUIDelegate:nil];
1735
1736     [_private->inspector webViewClosed];
1737 #endif
1738
1739 #if !PLATFORM(IOS)
1740     // To avoid leaks, call removeDragCaret in case it wasn't called after moveDragCaretToPoint.
1741     [self removeDragCaret];
1742 #endif
1743
1744     _private->group->removeWebView(self);
1745
1746     // Deleteing the WebCore::Page will clear the page cache so we call destroy on
1747     // all the plug-ins in the page cache to break any retain cycles.
1748     // See comment in HistoryItem::releaseAllPendingPageCaches() for more information.
1749     Page* page = _private->page;
1750     _private->page = 0;
1751     delete page;
1752
1753 #if !PLATFORM(IOS)
1754     if (_private->hasSpellCheckerDocumentTag) {
1755         [[NSSpellChecker sharedSpellChecker] closeSpellDocumentWithTag:_private->spellCheckerDocumentTag];
1756         _private->hasSpellCheckerDocumentTag = NO;
1757     }
1758 #endif
1759
1760     if (_private->layerFlushController) {
1761         _private->layerFlushController->invalidate();
1762         _private->layerFlushController = nullptr;
1763     }
1764     
1765 #if USE(GLIB)
1766     [self _clearGlibLoopObserver];
1767 #endif
1768
1769     [[self _notificationProvider] unregisterWebView:self];
1770
1771 #if !PLATFORM(IOS)
1772     [[NSDistributedNotificationCenter defaultCenter] removeObserver:self];
1773 #endif
1774     [[NSNotificationCenter defaultCenter] removeObserver:self];
1775
1776     [WebPreferences _removeReferenceForIdentifier:[self preferencesIdentifier]];
1777
1778     WebPreferences *preferences = _private->preferences;
1779     _private->preferences = nil;
1780     [preferences didRemoveFromWebView];
1781     [preferences release];
1782
1783     [self _closePluginDatabases];
1784
1785 #ifndef NDEBUG
1786     // Need this to make leak messages accurate.
1787     if (applicationIsTerminating) {
1788         gcController().garbageCollectNow();
1789         [WebCache setDisabled:YES];
1790     }
1791 #endif
1792 #if PLATFORM(IOS)
1793     // Fix for problems such as <rdar://problem/5774587> Crash closing tab in WebCore::Frame::page() from -[WebCoreFrameBridge pauseTimeouts]
1794     });
1795 #endif            
1796 }
1797
1798 // Indicates if the WebView is in the midst of a user gesture.
1799 - (BOOL)_isProcessingUserGesture
1800 {
1801     return ScriptController::processingUserGesture();
1802 }
1803
1804 + (NSString *)_MIMETypeForFile:(NSString *)path
1805 {
1806 #if !PLATFORM(IOS)
1807     NSString *extension = [path pathExtension];
1808 #endif
1809     NSString *MIMEType = nil;
1810
1811 #if !PLATFORM(IOS)
1812     // Get the MIME type from the extension.
1813     if ([extension length] != 0) {
1814         MIMEType = WKGetMIMETypeForExtension(extension);
1815     }
1816 #endif
1817
1818     // If we can't get a known MIME type from the extension, sniff.
1819     if ([MIMEType length] == 0 || [MIMEType isEqualToString:@"application/octet-stream"]) {
1820         NSFileHandle *handle = [NSFileHandle fileHandleForReadingAtPath:path];
1821         NSData *data = [handle readDataOfLength:WEB_GUESS_MIME_TYPE_PEEK_LENGTH];
1822         [handle closeFile];
1823         if ([data length] != 0) {
1824             MIMEType = [data _webkit_guessedMIMEType];
1825         }
1826         if ([MIMEType length] == 0) {
1827             MIMEType = @"application/octet-stream";
1828         }
1829     }
1830
1831     return MIMEType;
1832 }
1833
1834 - (WebDownload *)_downloadURL:(NSURL *)URL
1835 {
1836     ASSERT(URL);
1837     
1838     NSURLRequest *request = [[NSURLRequest alloc] initWithURL:URL];
1839     WebDownload *download = [WebDownload _downloadWithRequest:request
1840                                                      delegate:_private->downloadDelegate
1841                                                     directory:nil];
1842     [request release];
1843     
1844     return download;
1845 }
1846
1847 - (WebView *)_openNewWindowWithRequest:(NSURLRequest *)request
1848 {
1849     NSDictionary *features = [[NSDictionary alloc] init];
1850     WebView *newWindowWebView = [[self _UIDelegateForwarder] webView:self
1851                                             createWebViewWithRequest:nil
1852                                                       windowFeatures:features];
1853     [features release];
1854     if (!newWindowWebView)
1855         return nil;
1856
1857     CallUIDelegate(newWindowWebView, @selector(webViewShow:));
1858     return newWindowWebView;
1859 }
1860
1861 - (WebInspector *)inspector
1862 {
1863     if (!_private->inspector)
1864         _private->inspector = [[WebInspector alloc] initWithWebView:self];
1865     return _private->inspector;
1866 }
1867
1868 #if ENABLE(REMOTE_INSPECTOR)
1869 + (void)_enableRemoteInspector
1870 {
1871     RemoteInspector::shared().start();
1872 }
1873
1874 + (void)_disableRemoteInspector
1875 {
1876     RemoteInspector::shared().stop();
1877 }
1878
1879 + (void)_disableAutoStartRemoteInspector
1880 {
1881     RemoteInspector::startDisabled();
1882 }
1883
1884 + (BOOL)_isRemoteInspectorEnabled
1885 {
1886     return RemoteInspector::shared().enabled();
1887 }
1888
1889 + (BOOL)_hasRemoteInspectorSession
1890 {
1891     return RemoteInspector::shared().hasActiveDebugSession();
1892 }
1893
1894 - (BOOL)allowsRemoteInspection
1895 {
1896     return _private->page->remoteInspectionAllowed();
1897 }
1898
1899 - (void)setAllowsRemoteInspection:(BOOL)allow
1900 {
1901     _private->page->setRemoteInspectionAllowed(allow);
1902 }
1903
1904 - (void)setShowingInspectorIndication:(BOOL)showing
1905 {
1906 #if PLATFORM(IOS)
1907     ASSERT(WebThreadIsLocked());
1908
1909     if (showing) {
1910         if (!_private->indicateLayer) {
1911             _private->indicateLayer = [[WebIndicateLayer alloc] initWithWebView:self];
1912             [_private->indicateLayer setNeedsLayout];
1913             [[[self window] hostLayer] addSublayer:_private->indicateLayer];
1914         }
1915     } else {
1916         [_private->indicateLayer removeFromSuperlayer];
1917         [_private->indicateLayer release];
1918         _private->indicateLayer = nil;
1919     }
1920 #else
1921     // Implemented in WebCore::InspectorOverlay.
1922 #endif
1923 }
1924
1925 #if PLATFORM(IOS)
1926 - (void)setHostApplicationBundleId:(NSString *)bundleId name:(NSString *)name
1927 {
1928     if (![_private->hostApplicationBundleId isEqualToString:bundleId]) {
1929         [_private->hostApplicationBundleId release];
1930         _private->hostApplicationBundleId = [bundleId copy];
1931     }
1932
1933     if (![_private->hostApplicationName isEqualToString:name]) {
1934         [_private->hostApplicationName release];
1935         _private->hostApplicationName = [name copy];
1936     }
1937
1938     // FIXME: This has not yet been ported to Inspector::RemoteInspectorServer.
1939 }
1940
1941 - (NSString *)hostApplicationBundleId
1942 {
1943     return _private->hostApplicationBundleId;
1944 }
1945
1946 - (NSString *)hostApplicationName
1947 {
1948     return _private->hostApplicationName;
1949 }
1950 #endif // PLATFORM(IOS)
1951 #endif // ENABLE(REMOTE_INSPECTOR)
1952
1953 - (WebCore::Page*)page
1954 {
1955     return _private->page;
1956 }
1957
1958 #if !PLATFORM(IOS)
1959 - (NSMenu *)_menuForElement:(NSDictionary *)element defaultItems:(NSArray *)items
1960 {
1961     NSArray *defaultMenuItems = [[WebDefaultUIDelegate sharedUIDelegate] webView:self contextMenuItemsForElement:element defaultMenuItems:items];
1962     NSArray *menuItems = defaultMenuItems;
1963
1964     // CallUIDelegate returns nil if UIDelegate is nil or doesn't respond to the selector. So we need to check that here
1965     // to distinguish between using defaultMenuItems or the delegate really returning nil to say "no context menu".
1966     SEL selector = @selector(webView:contextMenuItemsForElement:defaultMenuItems:);
1967     if (_private->UIDelegate && [_private->UIDelegate respondsToSelector:selector]) {
1968         menuItems = CallUIDelegate(self, selector, element, defaultMenuItems);
1969         if (!menuItems)
1970             return nil;
1971     }
1972
1973     unsigned count = [menuItems count];
1974     if (!count)
1975         return nil;
1976
1977     NSMenu *menu = [[NSMenu alloc] init];
1978     for (unsigned i = 0; i < count; i++)
1979         [menu addItem:[menuItems objectAtIndex:i]];
1980
1981     return [menu autorelease];
1982 }
1983 #endif
1984
1985 - (void)_mouseDidMoveOverElement:(NSDictionary *)dictionary modifierFlags:(NSUInteger)modifierFlags
1986 {
1987     // We originally intended to call this delegate method sometimes with a nil dictionary, but due to
1988     // a bug dating back to WebKit 1.0 this delegate was never called with nil! Unfortunately we can't
1989     // start calling this with nil since it will break Adobe Help Viewer, and possibly other clients.
1990     if (!dictionary)
1991         return;
1992     CallUIDelegate(self, @selector(webView:mouseDidMoveOverElement:modifierFlags:), dictionary, modifierFlags);
1993 }
1994
1995 - (void)_loadBackForwardListFromOtherView:(WebView *)otherView
1996 {
1997     if (!_private->page)
1998         return;
1999     
2000     if (!otherView->_private->page)
2001         return;
2002     
2003     // It turns out the right combination of behavior is done with the back/forward load
2004     // type.  (See behavior matrix at the top of WebFramePrivate.)  So we copy all the items
2005     // in the back forward list, and go to the current one.
2006
2007     BackForwardClient* backForwardClient = _private->page->backForward().client();
2008     ASSERT(!backForwardClient->currentItem()); // destination list should be empty
2009
2010     BackForwardClient* otherBackForwardClient = otherView->_private->page->backForward().client();
2011     if (!otherBackForwardClient->currentItem())
2012         return; // empty back forward list, bail
2013     
2014     HistoryItem* newItemToGoTo = 0;
2015
2016     int lastItemIndex = otherBackForwardClient->forwardListCount();
2017     for (int i = -otherBackForwardClient->backListCount(); i <= lastItemIndex; ++i) {
2018         if (i == 0) {
2019             // If this item is showing , save away its current scroll and form state,
2020             // since that might have changed since loading and it is normally not saved
2021             // until we leave that page.
2022             otherView->_private->page->mainFrame().loader().history().saveDocumentAndScrollState();
2023         }
2024         RefPtr<HistoryItem> newItem = otherBackForwardClient->itemAtIndex(i)->copy();
2025         if (i == 0) 
2026             newItemToGoTo = newItem.get();
2027         backForwardClient->addItem(newItem.release());
2028     }
2029     
2030     ASSERT(newItemToGoTo);
2031     _private->page->goToItem(newItemToGoTo, FrameLoadTypeIndexedBackForward);
2032 }
2033
2034 - (void)_setFormDelegate: (id<WebFormDelegate>)delegate
2035 {
2036     _private->formDelegate = delegate;
2037 #if PLATFORM(IOS)
2038     [_private->formDelegateForwarder clearTarget];
2039     [_private->formDelegateForwarder release];
2040     _private->formDelegateForwarder = nil;
2041 #endif
2042 }
2043
2044 - (id<WebFormDelegate>)_formDelegate
2045 {
2046     return _private->formDelegate;
2047 }
2048
2049 #if PLATFORM(IOS)
2050 - (id)_formDelegateForwarder
2051 {
2052     if (_private->closing)
2053         return nil;
2054
2055     if (!_private->formDelegateForwarder)
2056         _private->formDelegateForwarder = [[_WebSafeForwarder alloc] initWithTarget:[self _formDelegate] defaultTarget:[WebDefaultFormDelegate sharedFormDelegate]];
2057     return _private->formDelegateForwarder;
2058 }
2059
2060 - (id)_formDelegateForSelector:(SEL)selector
2061 {
2062     id delegate = self->_private->formDelegate;
2063     if ([delegate respondsToSelector:selector])
2064         return delegate;
2065
2066     delegate = [WebDefaultFormDelegate sharedFormDelegate];
2067     if ([delegate respondsToSelector:selector])
2068         return delegate;
2069
2070     return nil;
2071 }
2072 #endif
2073
2074 #if !PLATFORM(IOS)
2075 - (BOOL)_needsAdobeFrameReloadingQuirk
2076 {
2077     static BOOL needsQuirk = WKAppVersionCheckLessThan(@"com.adobe.Acrobat", -1, 9.0)
2078         || WKAppVersionCheckLessThan(@"com.adobe.Acrobat.Pro", -1, 9.0)
2079         || WKAppVersionCheckLessThan(@"com.adobe.Reader", -1, 9.0)
2080         || WKAppVersionCheckLessThan(@"com.adobe.distiller", -1, 9.0)
2081         || WKAppVersionCheckLessThan(@"com.adobe.Contribute", -1, 4.2)
2082         || WKAppVersionCheckLessThan(@"com.adobe.dreamweaver-9.0", -1, 9.1)
2083         || WKAppVersionCheckLessThan(@"com.macromedia.fireworks", -1, 9.1)
2084         || WKAppVersionCheckLessThan(@"com.adobe.InCopy", -1, 5.1)
2085         || WKAppVersionCheckLessThan(@"com.adobe.InDesign", -1, 5.1)
2086         || WKAppVersionCheckLessThan(@"com.adobe.Soundbooth", -1, 2);
2087
2088     return needsQuirk;
2089 }
2090
2091 - (BOOL)_needsLinkElementTextCSSQuirk
2092 {
2093     static BOOL needsQuirk = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITHOUT_LINK_ELEMENT_TEXT_CSS_QUIRK)
2094         && WKAppVersionCheckLessThan(@"com.e-frontier.shade10", -1, 10.6);
2095     return needsQuirk;
2096 }
2097
2098 - (BOOL)_needsIsLoadingInAPISenseQuirk
2099 {
2100     static BOOL needsQuirk = WKAppVersionCheckLessThan(@"com.apple.iAdProducer", -1, 2.1);
2101     
2102     return needsQuirk;
2103 }
2104
2105 - (BOOL)_needsKeyboardEventDisambiguationQuirks
2106 {
2107     static BOOL needsQuirks = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_IE_COMPATIBLE_KEYBOARD_EVENT_DISPATCH) && !applicationIsSafari();
2108     return needsQuirks;
2109 }
2110
2111 - (BOOL)_needsFrameLoadDelegateRetainQuirk
2112 {
2113     static BOOL needsQuirk = WKAppVersionCheckLessThan(@"com.equinux.iSale5", -1, 5.6);    
2114     return needsQuirk;
2115 }
2116
2117 static bool needsSelfRetainWhileLoadingQuirk()
2118 {
2119     static bool needsQuirk = applicationIsAperture();
2120     return needsQuirk;
2121 }
2122 #endif // !PLATFORM(IOS)
2123
2124 - (BOOL)_needsPreHTML5ParserQuirks
2125 {    
2126 #if !PLATFORM(IOS)
2127     // AOL Instant Messenger and Microsoft My Day contain markup incompatible
2128     // with the new HTML5 parser. If these applications were linked against a
2129     // version of WebKit prior to the introduction of the HTML5 parser, enable
2130     // parser quirks to maintain compatibility. For details, see 
2131     // <https://bugs.webkit.org/show_bug.cgi?id=46134> and
2132     // <https://bugs.webkit.org/show_bug.cgi?id=46334>.
2133     static bool isApplicationNeedingParserQuirks = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_HTML5_PARSER)
2134         && (applicationIsAOLInstantMessenger() || applicationIsMicrosoftMyDay());
2135     
2136     // Mail.app must continue to display HTML email that contains quirky markup.
2137     static bool isAppleMail = applicationIsAppleMail();
2138
2139     return isApplicationNeedingParserQuirks
2140         || isAppleMail
2141 #if ENABLE(DASHBOARD_SUPPORT)
2142         // Pre-HTML5 parser quirks are required to remain compatible with many
2143         // Dashboard widgets. See <rdar://problem/8175982>.
2144         || (_private->page && _private->page->settings().usesDashboardBackwardCompatibilityMode())
2145 #endif
2146         || [[self preferences] usePreHTML5ParserQuirks];
2147 #else
2148     static bool isApplicationNeedingParserQuirks = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_HTML5_PARSER) && applicationIsDaijisenDictionary();
2149     return isApplicationNeedingParserQuirks || [[self preferences] usePreHTML5ParserQuirks];
2150 #endif
2151 }
2152
2153 - (BOOL)_needsUnrestrictedGetMatchedCSSRules
2154 {
2155 #if !PLATFORM(IOS)
2156     static bool needsUnrestrictedGetMatchedCSSRules = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_GET_MATCHED_CSS_RULES_RESTRICTIONS) && applicationIsSafari();
2157     return needsUnrestrictedGetMatchedCSSRules;
2158 #else
2159     // FIXME: <rdar://problem/8963684> Implement linked-on-or-after check for needsUnrestrictedGetMatchedCSSRules
2160     return NO;
2161 #endif
2162 }
2163
2164 - (void)_preferencesChangedNotification:(NSNotification *)notification
2165 {
2166 #if PLATFORM(IOS)
2167     // For WebViews that load synchronously, preference changes need to be propagated
2168     // down to WebCore synchronously so that loads in that WebView have the correct
2169     // up-to-date settings.
2170     if (!WebThreadIsLocked())
2171         WebThreadLock();
2172     if ([[self mainFrame] _loadsSynchronously]) {
2173 #endif
2174
2175     WebPreferences *preferences = (WebPreferences *)[notification object];
2176     [self _preferencesChanged:preferences];
2177
2178 #if PLATFORM(IOS)
2179     } else {
2180         WebThreadRun(^{
2181             // It is possible that the prefs object has already changed before the invocation could be called
2182             // on the web thread. This is not possible on TOT which is why they have a simple ASSERT.
2183             WebPreferences *preferences = (WebPreferences *)[notification object];
2184             if (preferences != [self preferences])
2185                 return;
2186             [self _preferencesChanged:preferences];
2187         });
2188     }
2189 #endif
2190 }
2191
2192 - (void)_preferencesChanged:(WebPreferences *)preferences
2193 {    
2194     ASSERT(preferences == [self preferences]);
2195     if (!_private->userAgentOverridden)
2196         _private->userAgent = String();
2197
2198     // Cache this value so we don't have to read NSUserDefaults on each page load
2199     _private->useSiteSpecificSpoofing = [preferences _useSiteSpecificSpoofing];
2200
2201     // Update corresponding WebCore Settings object.
2202     if (!_private->page)
2203         return;
2204
2205 #if PLATFORM(IOS)
2206     // iOS waits to call [WebDatabaseManager sharedWebDatabaseManager] until
2207     // didOneTimeInitialization is true so that we don't initialize databases
2208     // until the first WebView has been created. This is because database
2209     // initialization current requires disk access to populate the origins
2210     // quota map and we want to do this lazily by waiting until WebKit is
2211     // used to display web content in a WebView. The possible cases are:
2212     //   - on one time initialize (the first WebView creation) if databases are enabled (default)
2213     //   - when databases are dynamically enabled later, and they were disabled at startup (this case)
2214     if (didOneTimeInitialization) {
2215         if ([preferences databasesEnabled])
2216             [WebDatabaseManager sharedWebDatabaseManager];
2217         
2218         if ([preferences storageTrackerEnabled])
2219             WebKitInitializeStorageIfNecessary();
2220     }
2221 #endif
2222     
2223     Settings& settings = _private->page->settings();
2224
2225     settings.setCursiveFontFamily([preferences cursiveFontFamily]);
2226     settings.setDefaultFixedFontSize([preferences defaultFixedFontSize]);
2227     settings.setDefaultFontSize([preferences defaultFontSize]);
2228     settings.setDefaultTextEncodingName([preferences defaultTextEncodingName]);
2229     settings.setUsesEncodingDetector([preferences usesEncodingDetector]);
2230     settings.setFantasyFontFamily([preferences fantasyFontFamily]);
2231     settings.setFixedFontFamily([preferences fixedFontFamily]);
2232     settings.setScreenFontSubstitutionEnabled(
2233 #if !PLATFORM(IOS) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
2234         [[NSUserDefaults standardUserDefaults] boolForKey:@"NSFontDefaultScreenFontSubstitutionEnabled"] ||
2235 #endif
2236         [preferences screenFontSubstitutionEnabled]
2237     );
2238     settings.setForceFTPDirectoryListings([preferences _forceFTPDirectoryListings]);
2239     settings.setFTPDirectoryTemplatePath([preferences _ftpDirectoryTemplatePath]);
2240     settings.setLocalStorageDatabasePath([preferences _localStorageDatabasePath]);
2241     settings.setJavaEnabled([preferences isJavaEnabled]);
2242     settings.setScriptEnabled([preferences isJavaScriptEnabled]);
2243     settings.setWebSecurityEnabled([preferences isWebSecurityEnabled]);
2244     settings.setAllowUniversalAccessFromFileURLs([preferences allowUniversalAccessFromFileURLs]);
2245     settings.setAllowFileAccessFromFileURLs([preferences allowFileAccessFromFileURLs]);
2246     settings.setJavaScriptCanOpenWindowsAutomatically([preferences javaScriptCanOpenWindowsAutomatically]);
2247     settings.setMinimumFontSize([preferences minimumFontSize]);
2248     settings.setMinimumLogicalFontSize([preferences minimumLogicalFontSize]);
2249     settings.setPictographFontFamily([preferences pictographFontFamily]);
2250     settings.setPluginsEnabled([preferences arePlugInsEnabled]);
2251 #if ENABLE(SQL_DATABASE)
2252     DatabaseManager::manager().setIsAvailable([preferences databasesEnabled]);
2253 #endif
2254     settings.setLocalStorageEnabled([preferences localStorageEnabled]);
2255 #if !PLATFORM(IOS)
2256     settings.setExperimentalNotificationsEnabled([preferences experimentalNotificationsEnabled]);
2257 #endif
2258     _private->page->enableLegacyPrivateBrowsing([preferences privateBrowsingEnabled]);
2259     settings.setSansSerifFontFamily([preferences sansSerifFontFamily]);
2260     settings.setSerifFontFamily([preferences serifFontFamily]);
2261     settings.setStandardFontFamily([preferences standardFontFamily]);
2262     settings.setLoadsImagesAutomatically([preferences loadsImagesAutomatically]);
2263     settings.setLoadsSiteIconsIgnoringImageLoadingSetting([preferences loadsSiteIconsIgnoringImageLoadingPreference]);
2264 #if PLATFORM(IOS)
2265     settings.setShouldPrintBackgrounds(true);
2266 #else
2267     settings.setShouldPrintBackgrounds([preferences shouldPrintBackgrounds]);
2268     settings.setTextAreasAreResizable([preferences textAreasAreResizable]);
2269 #endif
2270     settings.setShrinksStandaloneImagesToFit([preferences shrinksStandaloneImagesToFit]);
2271     settings.setEditableLinkBehavior(core([preferences editableLinkBehavior]));
2272     settings.setTextDirectionSubmenuInclusionBehavior(core([preferences textDirectionSubmenuInclusionBehavior]));
2273     settings.setDOMPasteAllowed([preferences isDOMPasteAllowed]);
2274     settings.setUsesPageCache([self usesPageCache]);
2275     settings.setPageCacheSupportsPlugins([preferences pageCacheSupportsPlugins]);
2276     settings.setBackForwardCacheExpirationInterval([preferences _backForwardCacheExpirationInterval]);
2277 #if !PLATFORM(IOS)
2278     settings.setShowsURLsInToolTips([preferences showsURLsInToolTips]);
2279     settings.setShowsToolTipOverTruncatedText([preferences showsToolTipOverTruncatedText]);
2280 #endif
2281     settings.setDeveloperExtrasEnabled([preferences developerExtrasEnabled]);
2282     settings.setJavaScriptExperimentsEnabled([preferences javaScriptExperimentsEnabled]);
2283     settings.setAuthorAndUserStylesEnabled([preferences authorAndUserStylesEnabled]);
2284     settings.setApplicationChromeMode([preferences applicationChromeModeEnabled]);
2285 #if !PLATFORM(IOS)
2286     if ([preferences userStyleSheetEnabled]) {
2287         NSString* location = [[preferences userStyleSheetLocation] _web_originalDataAsString];
2288         if ([location isEqualToString:@"apple-dashboard://stylesheet"])
2289             location = @"file:///System/Library/PrivateFrameworks/DashboardClient.framework/Resources/widget.css";
2290         settings.setUserStyleSheetLocation([NSURL URLWithString:(location ? location : @"")]);
2291     } else
2292         settings.setUserStyleSheetLocation([NSURL URLWithString:@""]);
2293     settings.setNeedsAdobeFrameReloadingQuirk([self _needsAdobeFrameReloadingQuirk]);
2294     settings.setTreatsAnyTextCSSLinkAsStylesheet([self _needsLinkElementTextCSSQuirk]);
2295     settings.setNeedsKeyboardEventDisambiguationQuirks([self _needsKeyboardEventDisambiguationQuirks]);
2296 #else
2297     // iOS-specific settings
2298     settings.setStandalone([preferences _standalone]);
2299     settings.setTelephoneNumberParsingEnabled([preferences _telephoneNumberParsingEnabled]);
2300     settings.setAlwaysUseBaselineOfPrimaryFont([preferences _alwaysUseBaselineOfPrimaryFont]);
2301     settings.setAllowMultiElementImplicitSubmission([preferences _allowMultiElementImplicitFormSubmission]);
2302     settings.setLayoutInterval(std::chrono::milliseconds([preferences _layoutInterval]));
2303     settings.setMaxParseDuration([preferences _maxParseDuration]);
2304     settings.setAlwaysUseAcceleratedOverflowScroll([preferences _alwaysUseAcceleratedOverflowScroll]);
2305 #endif
2306     settings.setNeedsSiteSpecificQuirks(_private->useSiteSpecificSpoofing);
2307     settings.setWebArchiveDebugModeEnabled([preferences webArchiveDebugModeEnabled]);
2308     settings.setLocalFileContentSniffingEnabled([preferences localFileContentSniffingEnabled]);
2309     settings.setOfflineWebApplicationCacheEnabled([preferences offlineWebApplicationCacheEnabled]);
2310     settings.setJavaScriptCanAccessClipboard([preferences javaScriptCanAccessClipboard]);
2311     settings.setXSSAuditorEnabled([preferences isXSSAuditorEnabled]);
2312 #if !PLATFORM(IOS)
2313     settings.setEnforceCSSMIMETypeInNoQuirksMode(!WKAppVersionCheckLessThan(@"com.apple.iWeb", -1, 2.1));
2314 #endif
2315     settings.setDNSPrefetchingEnabled([preferences isDNSPrefetchingEnabled]);
2316     
2317     // FIXME: Enabling accelerated compositing when WebGL is enabled causes tests to fail on Leopard which expect HW compositing to be disabled.
2318     // Until we fix that, I will comment out the test (CFM)
2319     settings.setAcceleratedCompositingEnabled([preferences acceleratedCompositingEnabled]);
2320     settings.setAcceleratedDrawingEnabled([preferences acceleratedDrawingEnabled]);
2321     settings.setCanvasUsesAcceleratedDrawing([preferences canvasUsesAcceleratedDrawing]);    
2322     settings.setShowDebugBorders([preferences showDebugBorders]);
2323     settings.setShowRepaintCounter([preferences showRepaintCounter]);
2324     settings.setWebGLEnabled([preferences webGLEnabled]);
2325 #if !PLATFORM(IOS)
2326     // FIXME: Should we enable this following <rdar://problem/15290404>?
2327     settings.setMultithreadedWebGLEnabled([preferences multithreadedWebGLEnabled]);
2328 #endif
2329     settings.setForceSoftwareWebGLRendering([preferences forceSoftwareWebGLRendering]);
2330     settings.setAccelerated2dCanvasEnabled([preferences accelerated2dCanvasEnabled]);
2331     settings.setLoadDeferringEnabled(shouldEnableLoadDeferring());
2332     settings.setWindowFocusRestricted(shouldRestrictWindowFocus());
2333     settings.setFrameFlatteningEnabled([preferences isFrameFlatteningEnabled]);
2334     settings.setSpatialNavigationEnabled([preferences isSpatialNavigationEnabled]);
2335     settings.setPaginateDuringLayoutEnabled([preferences paginateDuringLayoutEnabled]);
2336     RuntimeEnabledFeatures::sharedFeatures().setCSSRegionsEnabled([preferences cssRegionsEnabled]);
2337     RuntimeEnabledFeatures::sharedFeatures().setCSSCompositingEnabled([preferences cssCompositingEnabled]);
2338 #if ENABLE(WEB_AUDIO)
2339     settings.setWebAudioEnabled([preferences webAudioEnabled]);
2340 #endif
2341     settings.setCSSGridLayoutEnabled([preferences cssGridLayoutEnabled]);
2342 #if ENABLE(FULLSCREEN_API)
2343     settings.setFullScreenEnabled([preferences fullScreenEnabled]);
2344 #endif
2345     settings.setAsynchronousSpellCheckingEnabled([preferences asynchronousSpellCheckingEnabled]);
2346     settings.setHyperlinkAuditingEnabled([preferences hyperlinkAuditingEnabled]);
2347     settings.setUsePreHTML5ParserQuirks([self _needsPreHTML5ParserQuirks]);
2348     settings.setCrossOriginCheckInGetMatchedCSSRulesDisabled([self _needsUnrestrictedGetMatchedCSSRules]);
2349     settings.setInteractiveFormValidationEnabled([self interactiveFormValidationEnabled]);
2350     settings.setValidationMessageTimerMagnification([self validationMessageTimerMagnification]);
2351 #if USE(AVFOUNDATION)
2352     settings.setAVFoundationEnabled([preferences isAVFoundationEnabled]);
2353 #endif
2354 #if PLATFORM(MAC)
2355     settings.setQTKitEnabled([preferences isQTKitEnabled]);
2356 #endif
2357 #if PLATFORM(IOS)
2358     settings.setMediaPlaybackAllowsAirPlay([preferences mediaPlaybackAllowsAirPlay]);
2359     settings.setAudioSessionCategoryOverride([preferences audioSessionCategoryOverride]);
2360     settings.setNetworkDataUsageTrackingEnabled([preferences networkDataUsageTrackingEnabled]);
2361     settings.setNetworkInterfaceName([preferences networkInterfaceName]);
2362     settings.setAVKitEnabled([preferences avKitEnabled]);
2363 #endif
2364     settings.setMediaPlaybackRequiresUserGesture([preferences mediaPlaybackRequiresUserGesture]);
2365     settings.setMediaPlaybackAllowsInline([preferences mediaPlaybackAllowsInline]);
2366     settings.setSuppressesIncrementalRendering([preferences suppressesIncrementalRendering]);
2367     settings.setRegionBasedColumnsEnabled([preferences regionBasedColumnsEnabled]);
2368     settings.setBackspaceKeyNavigationEnabled([preferences backspaceKeyNavigationEnabled]);
2369     settings.setWantsBalancedSetDefersLoadingBehavior([preferences wantsBalancedSetDefersLoadingBehavior]);
2370     settings.setMockScrollbarsEnabled([preferences mockScrollbarsEnabled]);
2371
2372 #if ENABLE(VIDEO_TRACK)
2373     settings.setShouldDisplaySubtitles([preferences shouldDisplaySubtitles]);
2374     settings.setShouldDisplayCaptions([preferences shouldDisplayCaptions]);
2375     settings.setShouldDisplayTextDescriptions([preferences shouldDisplayTextDescriptions]);
2376 #endif
2377
2378     settings.setShouldRespectImageOrientation([preferences shouldRespectImageOrientation]);
2379 #if !PLATFORM(IOS)
2380     settings.setNeedsIsLoadingInAPISenseQuirk([self _needsIsLoadingInAPISenseQuirk]);
2381 #endif
2382     settings.setRequestAnimationFrameEnabled([preferences requestAnimationFrameEnabled]);
2383     settings.setDiagnosticLoggingEnabled([preferences diagnosticLoggingEnabled]);
2384     settings.setLowPowerVideoAudioBufferSizeEnabled([preferences lowPowerVideoAudioBufferSizeEnabled]);
2385
2386     settings.setUseLegacyTextAlignPositionedElementBehavior([preferences useLegacyTextAlignPositionedElementBehavior]);
2387
2388 #if ENABLE(MEDIA_SOURCE)
2389     settings.setMediaSourceEnabled([preferences mediaSourceEnabled]);
2390 #endif
2391
2392 #if ENABLE(SERVICE_CONTROLS)
2393     settings.setImageControlsEnabled([preferences imageControlsEnabled]);
2394 #endif
2395
2396     settings.setShouldConvertPositionStyleOnCopy([preferences shouldConvertPositionStyleOnCopy]);
2397
2398     settings.setEnableInheritURIQueryComponent([preferences isInheritURIQueryComponentEnabled]);
2399
2400     switch ([preferences storageBlockingPolicy]) {
2401     case WebAllowAllStorage:
2402         settings.setStorageBlockingPolicy(SecurityOrigin::AllowAllStorage);
2403         break;
2404     case WebBlockThirdPartyStorage:
2405         settings.setStorageBlockingPolicy(SecurityOrigin::BlockThirdPartyStorage);
2406         break;
2407     case WebBlockAllStorage:
2408         settings.setStorageBlockingPolicy(SecurityOrigin::BlockAllStorage);
2409         break;
2410     }
2411
2412     settings.setPlugInSnapshottingEnabled([preferences plugInSnapshottingEnabled]);
2413
2414 #if ENABLE(HIDDEN_PAGE_DOM_TIMER_THROTTLING)
2415     settings.setHiddenPageDOMTimerThrottlingEnabled([preferences hiddenPageDOMTimerThrottlingEnabled]);
2416 #endif
2417 #if ENABLE(PAGE_VISIBILITY_API)
2418     settings.setHiddenPageCSSAnimationSuspensionEnabled([preferences hiddenPageCSSAnimationSuspensionEnabled]);
2419 #endif
2420
2421     // We have enabled this setting in WebKit2 for the sake of some ScrollingCoordinator work.
2422     // To avoid possible rendering differences, we should enable it for WebKit1 too. We also
2423     // want to keep this setting enabled for iOS. See <rdar://problem/9813262> for more details.
2424     settings.setFixedPositionCreatesStackingContext(true);
2425     
2426     NSTimeInterval timeout = [preferences incrementalRenderingSuppressionTimeoutInSeconds];
2427     if (timeout > 0)
2428         settings.setIncrementalRenderingSuppressionTimeoutInSeconds(timeout);
2429
2430     // Application Cache Preferences are stored on the global cache storage manager, not in Settings.
2431     [WebApplicationCache setDefaultOriginQuota:[preferences applicationCacheDefaultOriginQuota]];
2432
2433     BOOL zoomsTextOnly = [preferences zoomsTextOnly];
2434     if (_private->zoomsTextOnly != zoomsTextOnly)
2435         [self _setZoomMultiplier:_private->zoomMultiplier isTextOnly:zoomsTextOnly];
2436
2437 #if ENABLE(IOS_TEXT_AUTOSIZING)
2438     settings.setMinimumZoomFontSize([preferences _minimumZoomFontSize]);
2439 #endif
2440
2441 #if ENABLE(DISK_IMAGE_CACHE) && PLATFORM(IOS)
2442     DiskImageCache& diskImageCache = WebCore::diskImageCache();
2443     diskImageCache.setEnabled([preferences diskImageCacheEnabled]);
2444     diskImageCache.setMinimumImageSize([preferences diskImageCacheMinimumImageSize]);
2445     diskImageCache.setMaximumCacheSize([preferences diskImageCacheMaximumCacheSize]);
2446 #endif
2447
2448 #if PLATFORM(IOS)
2449     [[self window] setTileBordersVisible:[preferences showDebugBorders]];
2450     [[self window] setTilePaintCountsVisible:[preferences showRepaintCounter]];
2451     [[self window] setAcceleratedDrawingEnabled:[preferences acceleratedDrawingEnabled]];
2452     [WAKView _setInterpolationQuality:[preferences _interpolationQuality]];
2453     settings.setDelegatesPageScaling(true);
2454     
2455     settings.setShouldTransformsAffectOverflow(shouldTransformsAffectOverflow());
2456     settings.setShouldDispatchJavaScriptWindowOnErrorEvents(shouldDispatchJavaScriptWindowOnErrorEvents());
2457     ASSERT_WITH_MESSAGE(settings.pageCacheSupportsPlugins(), "PageCacheSupportsPlugins should be enabled on iOS.");
2458
2459     // Password echo
2460     settings.setPasswordEchoEnabled([preferences _allowPasswordEcho]);
2461     settings.setPasswordEchoDurationInSeconds([preferences _passwordEchoDuration]);
2462 #endif
2463 }
2464
2465 static inline IMP getMethod(id o, SEL s)
2466 {
2467     return [o respondsToSelector:s] ? [o methodForSelector:s] : 0;
2468 }
2469
2470 #if PLATFORM(IOS)
2471 - (id)_UIKitDelegateForwarder
2472 {
2473     if (_private->closing)
2474         return nil;
2475         
2476     if (!_private->UIKitDelegateForwarder)
2477         _private->UIKitDelegateForwarder = [[_WebSafeForwarder alloc] initWithTarget:_private->UIKitDelegate defaultTarget:[WebDefaultUIKitDelegate sharedUIKitDelegate]];
2478     return _private->UIKitDelegateForwarder;
2479 }
2480 #endif
2481
2482 - (void)_cacheResourceLoadDelegateImplementations
2483 {
2484     WebResourceDelegateImplementationCache *cache = &_private->resourceLoadDelegateImplementations;
2485     id delegate = _private->resourceProgressDelegate;
2486
2487     if (!delegate) {
2488         bzero(cache, sizeof(WebResourceDelegateImplementationCache));
2489         return;
2490     }
2491
2492     cache->didCancelAuthenticationChallengeFunc = getMethod(delegate, @selector(webView:resource:didCancelAuthenticationChallenge:fromDataSource:));
2493     cache->didFailLoadingWithErrorFromDataSourceFunc = getMethod(delegate, @selector(webView:resource:didFailLoadingWithError:fromDataSource:));
2494     cache->didFinishLoadingFromDataSourceFunc = getMethod(delegate, @selector(webView:resource:didFinishLoadingFromDataSource:));
2495     cache->didLoadResourceFromMemoryCacheFunc = getMethod(delegate, @selector(webView:didLoadResourceFromMemoryCache:response:length:fromDataSource:));
2496     cache->didReceiveAuthenticationChallengeFunc = getMethod(delegate, @selector(webView:resource:didReceiveAuthenticationChallenge:fromDataSource:));
2497 #if USE(PROTECTION_SPACE_AUTH_CALLBACK)
2498     cache->canAuthenticateAgainstProtectionSpaceFunc = getMethod(delegate, @selector(webView:resource:canAuthenticateAgainstProtectionSpace:forDataSource:));
2499 #endif
2500
2501 #if PLATFORM(IOS)
2502     cache->connectionPropertiesFunc = getMethod(delegate, @selector(webView:connectionPropertiesForResource:dataSource:));
2503     cache->webThreadDidFinishLoadingFromDataSourceFunc = getMethod(delegate, @selector(webThreadWebView:resource:didFinishLoadingFromDataSource:));
2504     cache->webThreadDidFailLoadingWithErrorFromDataSourceFunc = getMethod(delegate, @selector(webThreadWebView:resource:didFailLoadingWithError:fromDataSource:));
2505     cache->webThreadIdentifierForRequestFunc = getMethod(delegate, @selector(webThreadWebView:identifierForInitialRequest:fromDataSource:));
2506     cache->webThreadDidLoadResourceFromMemoryCacheFunc = getMethod(delegate, @selector(webThreadWebView:didLoadResourceFromMemoryCache:response:length:fromDataSource:));
2507     cache->webThreadWillSendRequestFunc = getMethod(delegate, @selector(webThreadWebView:resource:willSendRequest:redirectResponse:fromDataSource:));
2508     cache->webThreadDidReceiveResponseFunc = getMethod(delegate, @selector(webThreadWebView:resource:didReceiveResponse:fromDataSource:));
2509     cache->webThreadDidReceiveContentLengthFunc = getMethod(delegate, @selector(webThreadWebView:resource:didReceiveContentLength:fromDataSource:));
2510     cache->webThreadWillCacheResponseFunc = getMethod(delegate, @selector(webThreadWebView:resource:willCacheResponse:fromDataSource:));
2511 #endif
2512
2513     cache->didReceiveContentLengthFunc = getMethod(delegate, @selector(webView:resource:didReceiveContentLength:fromDataSource:));
2514     cache->didReceiveResponseFunc = getMethod(delegate, @selector(webView:resource:didReceiveResponse:fromDataSource:));
2515     cache->identifierForRequestFunc = getMethod(delegate, @selector(webView:identifierForInitialRequest:fromDataSource:));
2516     cache->plugInFailedWithErrorFunc = getMethod(delegate, @selector(webView:plugInFailedWithError:dataSource:));
2517     cache->willCacheResponseFunc = getMethod(delegate, @selector(webView:resource:willCacheResponse:fromDataSource:));
2518     cache->willSendRequestFunc = getMethod(delegate, @selector(webView:resource:willSendRequest:redirectResponse:fromDataSource:));
2519     cache->shouldUseCredentialStorageFunc = getMethod(delegate, @selector(webView:resource:shouldUseCredentialStorageForDataSource:));
2520     cache->shouldPaintBrokenImageForURLFunc = getMethod(delegate, @selector(webView:shouldPaintBrokenImageForURL:));
2521 }
2522
2523 - (void)_cacheFrameLoadDelegateImplementations
2524 {
2525     WebFrameLoadDelegateImplementationCache *cache = &_private->frameLoadDelegateImplementations;
2526     id delegate = _private->frameLoadDelegate;
2527
2528     if (!delegate) {
2529         bzero(cache, sizeof(WebFrameLoadDelegateImplementationCache));
2530         return;
2531     }
2532
2533     cache->didCancelClientRedirectForFrameFunc = getMethod(delegate, @selector(webView:didCancelClientRedirectForFrame:));
2534     cache->didChangeLocationWithinPageForFrameFunc = getMethod(delegate, @selector(webView:didChangeLocationWithinPageForFrame:));
2535     cache->didPushStateWithinPageForFrameFunc = getMethod(delegate, @selector(webView:didPushStateWithinPageForFrame:));
2536     cache->didReplaceStateWithinPageForFrameFunc = getMethod(delegate, @selector(webView:didReplaceStateWithinPageForFrame:));
2537     cache->didPopStateWithinPageForFrameFunc = getMethod(delegate, @selector(webView:didPopStateWithinPageForFrame:));
2538 #if JSC_OBJC_API_ENABLED
2539     cache->didCreateJavaScriptContextForFrameFunc = getMethod(delegate, @selector(webView:didCreateJavaScriptContext:forFrame:));
2540 #endif
2541     cache->didClearWindowObjectForFrameFunc = getMethod(delegate, @selector(webView:didClearWindowObject:forFrame:));
2542     cache->didClearWindowObjectForFrameInScriptWorldFunc = getMethod(delegate, @selector(webView:didClearWindowObjectForFrame:inScriptWorld:));
2543     cache->didClearInspectorWindowObjectForFrameFunc = getMethod(delegate, @selector(webView:didClearInspectorWindowObject:forFrame:));
2544     cache->didCommitLoadForFrameFunc = getMethod(delegate, @selector(webView:didCommitLoadForFrame:));
2545     cache->didFailLoadWithErrorForFrameFunc = getMethod(delegate, @selector(webView:didFailLoadWithError:forFrame:));
2546     cache->didFailProvisionalLoadWithErrorForFrameFunc = getMethod(delegate, @selector(webView:didFailProvisionalLoadWithError:forFrame:));
2547     cache->didFinishDocumentLoadForFrameFunc = getMethod(delegate, @selector(webView:didFinishDocumentLoadForFrame:));
2548     cache->didFinishLoadForFrameFunc = getMethod(delegate, @selector(webView:didFinishLoadForFrame:));
2549     cache->didFirstLayoutInFrameFunc = getMethod(delegate, @selector(webView:didFirstLayoutInFrame:));
2550     cache->didFirstVisuallyNonEmptyLayoutInFrameFunc = getMethod(delegate, @selector(webView:didFirstVisuallyNonEmptyLayoutInFrame:));
2551     cache->didLayoutFunc = getMethod(delegate, @selector(webView:didLayout:));
2552     cache->didHandleOnloadEventsForFrameFunc = getMethod(delegate, @selector(webView:didHandleOnloadEventsForFrame:));
2553 #if ENABLE(ICONDATABASE)
2554     cache->didReceiveIconForFrameFunc = getMethod(delegate, @selector(webView:didReceiveIcon:forFrame:));
2555 #endif
2556     cache->didReceiveServerRedirectForProvisionalLoadForFrameFunc = getMethod(delegate, @selector(webView:didReceiveServerRedirectForProvisionalLoadForFrame:));
2557     cache->didReceiveTitleForFrameFunc = getMethod(delegate, @selector(webView:didReceiveTitle:forFrame:));
2558     cache->didStartProvisionalLoadForFrameFunc = getMethod(delegate, @selector(webView:didStartProvisionalLoadForFrame:));
2559     cache->willCloseFrameFunc = getMethod(delegate, @selector(webView:willCloseFrame:));
2560     cache->willPerformClientRedirectToURLDelayFireDateForFrameFunc = getMethod(delegate, @selector(webView:willPerformClientRedirectToURL:delay:fireDate:forFrame:));
2561     cache->windowScriptObjectAvailableFunc = getMethod(delegate, @selector(webView:windowScriptObjectAvailable:));
2562     cache->didDisplayInsecureContentFunc = getMethod(delegate, @selector(webViewDidDisplayInsecureContent:));
2563     cache->didRunInsecureContentFunc = getMethod(delegate, @selector(webView:didRunInsecureContent:));
2564     cache->didDetectXSSFunc = getMethod(delegate, @selector(webView:didDetectXSS:));
2565     cache->didRemoveFrameFromHierarchyFunc = getMethod(delegate, @selector(webView:didRemoveFrameFromHierarchy:));
2566 #if PLATFORM(IOS)
2567     cache->webThreadDidLayoutFunc = getMethod(delegate, @selector(webThreadWebView:didLayout:));
2568 #endif
2569
2570     // It would be nice to get rid of this code and transition all clients to using didLayout instead of
2571     // didFirstLayoutInFrame and didFirstVisuallyNonEmptyLayoutInFrame. In the meantime, this is required
2572     // for backwards compatibility.
2573     Page* page = core(self);
2574     if (page) {
2575         unsigned milestones = DidFirstLayout;
2576 #if PLATFORM(IOS)
2577         milestones |= DidFirstVisuallyNonEmptyLayout;
2578 #else
2579         if (cache->didFirstVisuallyNonEmptyLayoutInFrameFunc)
2580             milestones |= DidFirstVisuallyNonEmptyLayout;
2581 #endif
2582         page->addLayoutMilestones(static_cast<LayoutMilestones>(milestones));
2583     }
2584 }
2585
2586 - (void)_cacheScriptDebugDelegateImplementations
2587 {
2588     WebScriptDebugDelegateImplementationCache *cache = &_private->scriptDebugDelegateImplementations;
2589     id delegate = _private->scriptDebugDelegate;
2590
2591     if (!delegate) {
2592         bzero(cache, sizeof(WebScriptDebugDelegateImplementationCache));
2593         return;
2594     }
2595
2596     cache->didParseSourceFunc = getMethod(delegate, @selector(webView:didParseSource:baseLineNumber:fromURL:sourceId:forWebFrame:));
2597     if (cache->didParseSourceFunc)
2598         cache->didParseSourceExpectsBaseLineNumber = YES;
2599     else {
2600         cache->didParseSourceExpectsBaseLineNumber = NO;
2601         cache->didParseSourceFunc = getMethod(delegate, @selector(webView:didParseSource:fromURL:sourceId:forWebFrame:));
2602     }
2603
2604     cache->failedToParseSourceFunc = getMethod(delegate, @selector(webView:failedToParseSource:baseLineNumber:fromURL:withError:forWebFrame:));
2605
2606     cache->exceptionWasRaisedFunc = getMethod(delegate, @selector(webView:exceptionWasRaised:hasHandler:sourceId:line:forWebFrame:));
2607     if (cache->exceptionWasRaisedFunc)
2608         cache->exceptionWasRaisedExpectsHasHandlerFlag = YES;
2609     else {
2610         cache->exceptionWasRaisedExpectsHasHandlerFlag = NO;
2611         cache->exceptionWasRaisedFunc = getMethod(delegate, @selector(webView:exceptionWasRaised:sourceId:line:forWebFrame:));
2612     }
2613 }
2614
2615 - (void)_cacheHistoryDelegateImplementations
2616 {
2617     WebHistoryDelegateImplementationCache *cache = &_private->historyDelegateImplementations;
2618     id delegate = _private->historyDelegate;
2619
2620     if (!delegate) {
2621         bzero(cache, sizeof(WebHistoryDelegateImplementationCache));
2622         return;
2623     }
2624
2625     cache->navigatedFunc = getMethod(delegate, @selector(webView:didNavigateWithNavigationData:inFrame:));
2626     cache->clientRedirectFunc = getMethod(delegate, @selector(webView:didPerformClientRedirectFromURL:toURL:inFrame:));
2627     cache->serverRedirectFunc = getMethod(delegate, @selector(webView:didPerformServerRedirectFromURL:toURL:inFrame:));
2628     cache->deprecatedSetTitleFunc = getMethod(delegate, @selector(webView:updateHistoryTitle:forURL:));
2629     cache->setTitleFunc = getMethod(delegate, @selector(webView:updateHistoryTitle:forURL:inFrame:));
2630     cache->populateVisitedLinksFunc = getMethod(delegate, @selector(populateVisitedLinksForWebView:));
2631 }
2632
2633 - (id)_policyDelegateForwarder
2634 {
2635 #if PLATFORM(IOS)
2636     if (_private->closing)
2637         return nil;
2638 #endif
2639     if (!_private->policyDelegateForwarder)
2640         _private->policyDelegateForwarder = [[_WebSafeForwarder alloc] initWithTarget:_private->policyDelegate defaultTarget:[WebDefaultPolicyDelegate sharedPolicyDelegate]];
2641     return _private->policyDelegateForwarder;
2642 }
2643
2644 - (id)_UIDelegateForwarder
2645 {
2646 #if PLATFORM(IOS)
2647     if (_private->closing)
2648         return nil;
2649 #endif
2650     if (!_private->UIDelegateForwarder)
2651         _private->UIDelegateForwarder = [[_WebSafeForwarder alloc] initWithTarget:_private->UIDelegate defaultTarget:[WebDefaultUIDelegate sharedUIDelegate]];
2652     return _private->UIDelegateForwarder;
2653 }
2654
2655 #if PLATFORM(IOS)
2656 - (id)_UIDelegateForSelector:(SEL)selector
2657 {
2658     id delegate = self->_private->UIDelegate;
2659     if ([delegate respondsToSelector:selector])
2660         return delegate;
2661
2662     delegate = [WebDefaultUIDelegate sharedUIDelegate];
2663     if ([delegate respondsToSelector:selector])
2664         return delegate;
2665
2666     return nil;
2667 }
2668 #endif
2669
2670 - (id)_editingDelegateForwarder
2671 {
2672 #if PLATFORM(IOS)
2673     if (_private->closing)
2674         return nil;
2675 #endif    
2676     // This can be called during window deallocation by QTMovieView in the QuickTime Cocoa Plug-in.
2677     // Not sure if that is a bug or not.
2678     if (!_private)
2679         return nil;
2680
2681     if (!_private->editingDelegateForwarder)
2682         _private->editingDelegateForwarder = [[_WebSafeForwarder alloc] initWithTarget:_private->editingDelegate defaultTarget:[WebDefaultEditingDelegate sharedEditingDelegate]];
2683     return _private->editingDelegateForwarder;
2684 }
2685
2686 - (void)_closeWindow
2687 {
2688     [[self _UIDelegateForwarder] webViewClose:self];
2689 }
2690
2691 + (void)_unregisterViewClassAndRepresentationClassForMIMEType:(NSString *)MIMEType
2692 {
2693     [[WebFrameView _viewTypesAllowImageTypeOmission:NO] removeObjectForKey:MIMEType];
2694     [[WebDataSource _repTypesAllowImageTypeOmission:NO] removeObjectForKey:MIMEType];
2695     
2696     // FIXME: We also need to maintain MIMEType registrations (which can be dynamically changed)
2697     // in the WebCore MIMEType registry.  For now we're doing this in a safe, limited manner
2698     // to fix <rdar://problem/5372989> - a future revamping of the entire system is neccesary for future robustness
2699     MIMETypeRegistry::getSupportedNonImageMIMETypes().remove(MIMEType);
2700 }
2701
2702 + (void)_registerViewClass:(Class)viewClass representationClass:(Class)representationClass forURLScheme:(NSString *)URLScheme
2703 {
2704     NSString *MIMEType = [self _generatedMIMETypeForURLScheme:URLScheme];
2705     [self registerViewClass:viewClass representationClass:representationClass forMIMEType:MIMEType];
2706
2707     // FIXME: We also need to maintain MIMEType registrations (which can be dynamically changed)
2708     // in the WebCore MIMEType registry.  For now we're doing this in a safe, limited manner
2709     // to fix <rdar://problem/5372989> - a future revamping of the entire system is neccesary for future robustness
2710     if ([viewClass class] == [WebHTMLView class])
2711         MIMETypeRegistry::getSupportedNonImageMIMETypes().add(MIMEType);
2712     
2713     // This is used to make _representationExistsForURLScheme faster.
2714     // Without this set, we'd have to create the MIME type each time.
2715     if (schemesWithRepresentationsSet == nil) {
2716         schemesWithRepresentationsSet = [[NSMutableSet alloc] init];
2717     }
2718     [schemesWithRepresentationsSet addObject:[[[URLScheme lowercaseString] copy] autorelease]];
2719 }
2720
2721 + (NSString *)_generatedMIMETypeForURLScheme:(NSString *)URLScheme
2722 {
2723     return [@"x-apple-web-kit/" stringByAppendingString:[URLScheme lowercaseString]];
2724 }
2725
2726 + (BOOL)_representationExistsForURLScheme:(NSString *)URLScheme
2727 {
2728     return [schemesWithRepresentationsSet containsObject:[URLScheme lowercaseString]];
2729 }
2730
2731 + (BOOL)_canHandleRequest:(NSURLRequest *)request forMainFrame:(BOOL)forMainFrame
2732 {
2733     // FIXME: If <rdar://problem/5217309> gets fixed, this check can be removed.
2734     if (!request)
2735         return NO;
2736
2737     if ([NSURLConnection canHandleRequest:request])
2738         return YES;
2739
2740     NSString *scheme = [[request URL] scheme];
2741
2742     // Representations for URL schemes work at the top level.
2743     if (forMainFrame && [self _representationExistsForURLScheme:scheme])
2744         return YES;
2745
2746     if ([scheme _webkit_isCaseInsensitiveEqualToString:@"applewebdata"])
2747         return YES;
2748
2749 #if ENABLE(BLOB)
2750     if ([scheme _webkit_isCaseInsensitiveEqualToString:@"blob"])
2751         return YES;
2752 #endif
2753
2754     return NO;
2755 }
2756
2757 + (BOOL)_canHandleRequest:(NSURLRequest *)request
2758 {
2759     return [self _canHandleRequest:request forMainFrame:YES];
2760 }
2761
2762 + (NSString *)_decodeData:(NSData *)data
2763 {
2764     HTMLNames::init(); // this method is used for importing bookmarks at startup, so HTMLNames are likely to be uninitialized yet
2765     return TextResourceDecoder::create("text/html")->decodeAndFlush(static_cast<const char*>([data bytes]), [data length]); // bookmark files are HTML
2766 }
2767
2768 - (void)_pushPerformingProgrammaticFocus
2769 {
2770     _private->programmaticFocusCount++;
2771 }
2772
2773 - (void)_popPerformingProgrammaticFocus
2774 {
2775     _private->programmaticFocusCount--;
2776 }
2777
2778 - (BOOL)_isPerformingProgrammaticFocus
2779 {
2780     return _private->programmaticFocusCount != 0;
2781 }
2782
2783 #if !PLATFORM(IOS)
2784 - (void)_didChangeValueForKey: (NSString *)key
2785 {
2786     LOG (Bindings, "calling didChangeValueForKey: %@", key);
2787     [self didChangeValueForKey: key];
2788 }
2789
2790 - (void)_willChangeValueForKey: (NSString *)key
2791 {
2792     LOG (Bindings, "calling willChangeValueForKey: %@", key);
2793     [self willChangeValueForKey: key];
2794 }
2795
2796 + (BOOL)automaticallyNotifiesObserversForKey:(NSString *)key {
2797     static NSSet *manualNotifyKeys = nil;
2798     if (!manualNotifyKeys)
2799         manualNotifyKeys = [[NSSet alloc] initWithObjects:_WebMainFrameURLKey, _WebIsLoadingKey, _WebEstimatedProgressKey,
2800             _WebCanGoBackKey, _WebCanGoForwardKey, _WebMainFrameTitleKey, _WebMainFrameIconKey, _WebMainFrameDocumentKey,
2801             nil];
2802     if ([manualNotifyKeys containsObject:key])
2803         return NO;
2804     return YES;
2805 }
2806
2807 - (NSArray *)_declaredKeys {
2808     static NSArray *declaredKeys = nil;
2809     if (!declaredKeys)
2810         declaredKeys = [[NSArray alloc] initWithObjects:_WebMainFrameURLKey, _WebIsLoadingKey, _WebEstimatedProgressKey,
2811             _WebCanGoBackKey, _WebCanGoForwardKey, _WebMainFrameTitleKey, _WebMainFrameIconKey, _WebMainFrameDocumentKey, nil];
2812     return declaredKeys;
2813 }
2814
2815 - (void)setObservationInfo:(void *)info
2816 {
2817     _private->observationInfo = info;
2818 }
2819
2820 - (void *)observationInfo
2821 {
2822     return _private->observationInfo;
2823 }
2824
2825 - (void)_willChangeBackForwardKeys
2826 {
2827     [self _willChangeValueForKey: _WebCanGoBackKey];
2828     [self _willChangeValueForKey: _WebCanGoForwardKey];
2829 }
2830
2831 - (void)_didChangeBackForwardKeys
2832 {
2833     [self _didChangeValueForKey: _WebCanGoBackKey];
2834     [self _didChangeValueForKey: _WebCanGoForwardKey];
2835 }
2836
2837 - (void)_didStartProvisionalLoadForFrame:(WebFrame *)frame
2838 {
2839     if (needsSelfRetainWhileLoadingQuirk())
2840         [self retain];
2841
2842     [self _willChangeBackForwardKeys];
2843     if (frame == [self mainFrame]){
2844         // Force an observer update by sending a will/did.
2845         [self _willChangeValueForKey: _WebIsLoadingKey];
2846         [self _didChangeValueForKey: _WebIsLoadingKey];
2847
2848         [self _willChangeValueForKey: _WebMainFrameURLKey];
2849     }
2850
2851     [NSApp setWindowsNeedUpdate:YES];
2852
2853 #if ENABLE(FULLSCREEN_API)
2854     Document* document = core([frame DOMDocument]);
2855     if (Element* element = document ? document->webkitCurrentFullScreenElement() : 0) {
2856         SEL selector = @selector(webView:closeFullScreenWithListener:);
2857         if (_private->UIDelegate && [_private->UIDelegate respondsToSelector:selector]) {
2858             WebKitFullScreenListener *listener = [[WebKitFullScreenListener alloc] initWithElement:element];
2859             CallUIDelegate(self, selector, listener);
2860             [listener release];
2861         } else if (_private->newFullscreenController && [_private->newFullscreenController isFullScreen]) {
2862             [_private->newFullscreenController close];
2863         }
2864     }
2865 #endif
2866 }
2867
2868 - (void)_checkDidPerformFirstNavigation
2869 {
2870     if (_private->_didPerformFirstNavigation)
2871         return;
2872
2873     Page* page = _private->page;
2874     if (!page)
2875         return;
2876
2877     auto& backForwardController = page->backForward();
2878
2879     if (!backForwardController.backItem())
2880         return;
2881
2882     _private->_didPerformFirstNavigation = YES;
2883
2884     if (_private->preferences.automaticallyDetectsCacheModel && _private->preferences.cacheModel < WebCacheModelDocumentBrowser)
2885         _private->preferences.cacheModel = WebCacheModelDocumentBrowser;
2886 }
2887
2888 - (void)_didCommitLoadForFrame:(WebFrame *)frame
2889 {
2890     if (frame == [self mainFrame])
2891         [self _didChangeValueForKey: _WebMainFrameURLKey];
2892
2893     [self _checkDidPerformFirstNavigation];
2894
2895     [NSApp setWindowsNeedUpdate:YES];
2896 }
2897
2898 - (void)_didFinishLoadForFrame:(WebFrame *)frame
2899 {
2900     if (needsSelfRetainWhileLoadingQuirk())
2901         [self performSelector:@selector(release) withObject:nil afterDelay:0];
2902         
2903     [self _didChangeBackForwardKeys];
2904     if (frame == [self mainFrame]){
2905         // Force an observer update by sending a will/did.
2906         [self _willChangeValueForKey: _WebIsLoadingKey];
2907         [self _didChangeValueForKey: _WebIsLoadingKey];
2908     }
2909     [NSApp setWindowsNeedUpdate:YES];
2910 }
2911
2912 - (void)_didFailLoadWithError:(NSError *)error forFrame:(WebFrame *)frame
2913 {
2914     if (needsSelfRetainWhileLoadingQuirk())
2915         [self performSelector:@selector(release) withObject:nil afterDelay:0];
2916
2917     [self _didChangeBackForwardKeys];
2918     if (frame == [self mainFrame]){
2919         // Force an observer update by sending a will/did.
2920         [self _willChangeValueForKey: _WebIsLoadingKey];
2921         [self _didChangeValueForKey: _WebIsLoadingKey];
2922     }
2923     [NSApp setWindowsNeedUpdate:YES];
2924 }
2925
2926 - (void)_didFailProvisionalLoadWithError:(NSError *)error forFrame:(WebFrame *)frame
2927 {
2928     if (needsSelfRetainWhileLoadingQuirk())
2929         [self performSelector:@selector(release) withObject:nil afterDelay:0];
2930
2931     [self _didChangeBackForwardKeys];
2932     if (frame == [self mainFrame]){
2933         // Force an observer update by sending a will/did.
2934         [self _willChangeValueForKey: _WebIsLoadingKey];
2935         [self _didChangeValueForKey: _WebIsLoadingKey];
2936         
2937         [self _didChangeValueForKey: _WebMainFrameURLKey];
2938     }
2939     [NSApp setWindowsNeedUpdate:YES];
2940 }
2941
2942 - (NSCachedURLResponse *)_cachedResponseForURL:(NSURL *)URL
2943 {
2944     RetainPtr<NSMutableURLRequest *> request = adoptNS([[NSMutableURLRequest alloc] initWithURL:URL]);
2945     [request _web_setHTTPUserAgent:[self userAgentForURL:URL]];
2946     NSCachedURLResponse *cachedResponse;
2947
2948     if (!_private->page)
2949         return nil;
2950
2951     if (CFURLStorageSessionRef storageSession = _private->page->mainFrame().loader().networkingContext()->storageSession().platformSession())
2952         cachedResponse = WKCachedResponseForRequest(storageSession, request.get());
2953     else
2954         cachedResponse = [[NSURLCache sharedURLCache] cachedResponseForRequest:request.get()];
2955
2956     return cachedResponse;
2957 }
2958
2959 - (void)_writeImageForElement:(NSDictionary *)element withPasteboardTypes:(NSArray *)types toPasteboard:(NSPasteboard *)pasteboard
2960 {
2961     NSURL *linkURL = [element objectForKey:WebElementLinkURLKey];
2962     DOMElement *domElement = [element objectForKey:WebElementDOMNodeKey];
2963     [pasteboard _web_writeImage:(NSImage *)(domElement ? nil : [element objectForKey:WebElementImageKey])
2964                         element:domElement
2965                             URL:linkURL ? linkURL : (NSURL *)[element objectForKey:WebElementImageURLKey]
2966                           title:[element objectForKey:WebElementImageAltStringKey] 
2967                         archive:[[element objectForKey:WebElementDOMNodeKey] webArchive]
2968                           types:types
2969                          source:nil];
2970 }
2971
2972 - (void)_writeLinkElement:(NSDictionary *)element withPasteboardTypes:(NSArray *)types toPasteboard:(NSPasteboard *)pasteboard
2973 {
2974     [pasteboard _web_writeURL:[element objectForKey:WebElementLinkURLKey]
2975                      andTitle:[element objectForKey:WebElementLinkLabelKey]
2976                         types:types];
2977 }
2978
2979 #if ENABLE(DRAG_SUPPORT)
2980 - (void)_setInitiatedDrag:(BOOL)initiatedDrag
2981 {
2982     if (!_private->page)
2983         return;
2984     _private->page->dragController().setDidInitiateDrag(initiatedDrag);
2985 }
2986 #endif
2987
2988 #else
2989
2990 - (void)_didCommitLoadForFrame:(WebFrame *)frame
2991 {
2992     if (frame == [self mainFrame])
2993         _private->didDrawTiles = 0;
2994 }
2995
2996 #endif // PLATFORM(IOS)
2997
2998 #if ENABLE(DASHBOARD_SUPPORT)
2999
3000 #define DASHBOARD_CONTROL_LABEL @"control"
3001
3002 - (void)_addControlRect:(NSRect)bounds clip:(NSRect)clip fromView:(NSView *)view toDashboardRegions:(NSMutableDictionary *)regions
3003 {
3004     NSRect adjustedBounds = bounds;
3005     adjustedBounds.origin = [self convertPoint:bounds.origin fromView:view];
3006     adjustedBounds.origin.y = [self bounds].size.height - adjustedBounds.origin.y;
3007     adjustedBounds.size = bounds.size;
3008
3009     NSRect adjustedClip;
3010     adjustedClip.origin = [self convertPoint:clip.origin fromView:view];
3011     adjustedClip.origin.y = [self bounds].size.height - adjustedClip.origin.y;
3012     adjustedClip.size = clip.size;
3013
3014     WebDashboardRegion *region = [[WebDashboardRegion alloc] initWithRect:adjustedBounds 
3015         clip:adjustedClip type:WebDashboardRegionTypeScrollerRectangle];
3016     NSMutableArray *scrollerRegions = [regions objectForKey:DASHBOARD_CONTROL_LABEL];
3017     if (!scrollerRegions) {
3018         scrollerRegions = [[NSMutableArray alloc] init];
3019         [regions setObject:scrollerRegions forKey:DASHBOARD_CONTROL_LABEL];
3020         [scrollerRegions release];
3021     }
3022     [scrollerRegions addObject:region];
3023     [region release];
3024 }
3025
3026 - (void)_addScrollerDashboardRegionsForFrameView:(FrameView*)frameView dashboardRegions:(NSMutableDictionary *)regions
3027 {    
3028     NSView *documentView = [[kit(&frameView->frame()) frameView] documentView];
3029
3030     for (const auto& widget: frameView->children()) {
3031         if (widget->isFrameView()) {
3032             [self _addScrollerDashboardRegionsForFrameView:toFrameView(widget.get()) dashboardRegions:regions];
3033             continue;
3034         }
3035
3036         if (!widget->isScrollbar())
3037             continue;
3038
3039         // FIXME: This should really pass an appropriate clip, but our first try got it wrong, and
3040         // it's not common to need this to be correct in Dashboard widgets.
3041         NSRect bounds = widget->frameRect();
3042         [self _addControlRect:bounds clip:bounds fromView:documentView toDashboardRegions:regions];
3043     }
3044 }
3045
3046 - (void)_addScrollerDashboardRegions:(NSMutableDictionary *)regions from:(NSArray *)views
3047 {
3048     // Add scroller regions for NSScroller and WebCore scrollbars
3049     NSUInteger count = [views count];
3050     for (NSUInteger i = 0; i < count; i++) {
3051         NSView *view = [views objectAtIndex:i];
3052         
3053         if ([view isKindOfClass:[WebHTMLView class]]) {
3054             if (Frame* coreFrame = core([(WebHTMLView*)view _frame])) {
3055                 if (FrameView* coreView = coreFrame->view())
3056                     [self _addScrollerDashboardRegionsForFrameView:coreView dashboardRegions:regions];
3057             }
3058         } else if ([view isKindOfClass:[NSScroller class]]) {
3059             // AppKit places absent scrollers at -100,-100
3060             if ([view frame].origin.y < 0)
3061                 continue;
3062             [self _addControlRect:[view bounds] clip:[view visibleRect] fromView:view toDashboardRegions:regions];
3063         }
3064         [self _addScrollerDashboardRegions:regions from:[view subviews]];
3065     }
3066 }
3067
3068 - (void)_addScrollerDashboardRegions:(NSMutableDictionary *)regions
3069 {
3070     [self _addScrollerDashboardRegions:regions from:[self subviews]];
3071 }
3072
3073 - (NSDictionary *)_dashboardRegions
3074 {
3075     // Only return regions from main frame.
3076     Frame* mainFrame = [self _mainCoreFrame];
3077     if (!mainFrame)
3078         return nil;
3079
3080     const Vector<AnnotatedRegionValue>& regions = mainFrame->document()->annotatedRegions();
3081     size_t size = regions.size();
3082
3083     NSMutableDictionary *webRegions = [NSMutableDictionary dictionaryWithCapacity:size];
3084     for (size_t i = 0; i < size; i++) {
3085         const AnnotatedRegionValue& region = regions[i];
3086
3087         if (region.type == StyleDashboardRegion::None)
3088             continue;
3089
3090         NSString *label = region.label;
3091         WebDashboardRegionType type = WebDashboardRegionTypeNone;
3092         if (region.type == StyleDashboardRegion::Circle)
3093             type = WebDashboardRegionTypeCircle;
3094         else if (region.type == StyleDashboardRegion::Rectangle)
3095             type = WebDashboardRegionTypeRectangle;
3096         NSMutableArray *regionValues = [webRegions objectForKey:label];
3097         if (!regionValues) {
3098             regionValues = [[NSMutableArray alloc] initWithCapacity:1];
3099             [webRegions setObject:regionValues forKey:label];
3100             [regionValues release];
3101         }
3102
3103         WebDashboardRegion *webRegion = [[WebDashboardRegion alloc] initWithRect:pixelSnappedIntRect(region.bounds) clip:pixelSnappedIntRect(region.clip) type:type];
3104         [regionValues addObject:webRegion];
3105         [webRegion release];
3106     }
3107
3108     [self _addScrollerDashboardRegions:webRegions];
3109
3110     return webRegions;
3111 }
3112
3113 - (void)_setDashboardBehavior:(WebDashboardBehavior)behavior to:(BOOL)flag
3114 {
3115     // FIXME: Remove this blanket assignment once Dashboard and Dashcode implement 
3116     // specific support for the backward compatibility mode flag.
3117     if (behavior == WebDashboardBehaviorAllowWheelScrolling && flag == NO && _private->page)
3118         _private->page->settings().setUsesDashboardBackwardCompatibilityMode(true);
3119     
3120     switch (behavior) {
3121         case WebDashboardBehaviorAlwaysSendMouseEventsToAllWindows: {
3122             _private->dashboardBehaviorAlwaysSendMouseEventsToAllWindows = flag;
3123             break;
3124         }
3125         case WebDashboardBehaviorAlwaysSendActiveNullEventsToPlugIns: {
3126             _private->dashboardBehaviorAlwaysSendActiveNullEventsToPlugIns = flag;
3127             break;
3128         }
3129         case WebDashboardBehaviorAlwaysAcceptsFirstMouse: {
3130             _private->dashboardBehaviorAlwaysAcceptsFirstMouse = flag;
3131             break;
3132         }
3133         case WebDashboardBehaviorAllowWheelScrolling: {
3134             _private->dashboardBehaviorAllowWheelScrolling = flag;
3135             break;
3136         }
3137         case WebDashboardBehaviorUseBackwardCompatibilityMode: {
3138             if (_private->page)
3139                 _private->page->settings().setUsesDashboardBackwardCompatibilityMode(flag);
3140 #if ENABLE(LEGACY_CSS_VENDOR_PREFIXES)
3141             RuntimeEnabledFeatures::sharedFeatures().setLegacyCSSVendorPrefixesEnabled(flag);
3142 #endif
3143             break;
3144         }
3145     }
3146
3147     // Pre-HTML5 parser quirks should be enabled if Dashboard is in backward
3148     // compatibility mode. See <rdar://problem/8175982>.
3149     if (_private->page)
3150         _private->page->settings().setUsePreHTML5ParserQuirks([self _needsPreHTML5ParserQuirks]);
3151 }
3152
3153 - (BOOL)_dashboardBehavior:(WebDashboardBehavior)behavior
3154 {
3155     switch (behavior) {
3156         case WebDashboardBehaviorAlwaysSendMouseEventsToAllWindows: {
3157             return _private->dashboardBehaviorAlwaysSendMouseEventsToAllWindows;
3158         }
3159         case WebDashboardBehaviorAlwaysSendActiveNullEventsToPlugIns: {
3160             return _private->dashboardBehaviorAlwaysSendActiveNullEventsToPlugIns;
3161         }
3162         case WebDashboardBehaviorAlwaysAcceptsFirstMouse: {
3163             return _private->dashboardBehaviorAlwaysAcceptsFirstMouse;
3164         }
3165         case WebDashboardBehaviorAllowWheelScrolling: {
3166             return _private->dashboardBehaviorAllowWheelScrolling;
3167         }
3168         case WebDashboardBehaviorUseBackwardCompatibilityMode: {
3169             return _private->page && _private->page->settings().usesDashboardBackwardCompatibilityMode();
3170         }
3171     }
3172     return NO;
3173 }
3174
3175 #endif /* ENABLE(DASHBOARD_SUPPORT) */
3176
3177 + (void)_setShouldUseFontSmoothing:(BOOL)f
3178 {
3179     Font::setShouldUseSmoothing(f);
3180 }
3181
3182 + (BOOL)_shouldUseFontSmoothing
3183 {
3184     return Font::shouldUseSmoothing();
3185 }
3186
3187 #if !PLATFORM(IOS)
3188 + (void)_setUsesTestModeFocusRingColor:(BOOL)f
3189 {
3190     setUsesTestModeFocusRingColor(f);
3191 }
3192
3193 + (BOOL)_usesTestModeFocusRingColor
3194 {
3195     return usesTestModeFocusRingColor();
3196 }
3197 #endif
3198
3199 #if PLATFORM(IOS)
3200 - (void)_setUIKitDelegate:(id)delegate
3201 {
3202     _private->UIKitDelegate = delegate;
3203     [_private->UIKitDelegateForwarder clearTarget];
3204     [_private->UIKitDelegateForwarder release];
3205     _private->UIKitDelegateForwarder = nil;
3206 }
3207
3208 - (id)_UIKitDelegate
3209 {
3210     return _private->UIKitDelegate;
3211 }
3212
3213 - (void)setWebMailDelegate:(id)delegate
3214 {
3215     _private->WebMailDelegate = delegate;
3216 }
3217
3218 - (id)_webMailDelegate
3219 {
3220     return _private->WebMailDelegate;
3221 }
3222
3223 - (id <WebCaretChangeListener>)caretChangeListener
3224 {
3225     return _private->_caretChangeListener;
3226 }
3227
3228 - (void)setCaretChangeListener:(id <WebCaretChangeListener>)listener
3229 {
3230     _private->_caretChangeListener = listener;
3231 }
3232
3233 - (NSSet *)caretChangeListeners
3234 {
3235     return _private->_caretChangeListeners;
3236 }
3237
3238 - (void)addCaretChangeListener:(id <WebCaretChangeListener>)listener
3239 {
3240     if (_private->_caretChangeListeners == nil) {
3241         _private->_caretChangeListeners = [[NSMutableSet alloc] init];
3242     }
3243     
3244     [_private->_caretChangeListeners addObject:listener];
3245 }
3246
3247 - (void)removeCaretChangeListener:(id <WebCaretChangeListener>)listener
3248 {
3249     [_private->_caretChangeListeners removeObject:listener];
3250 }
3251
3252 - (void)removeAllCaretChangeListeners
3253 {
3254     [_private->_caretChangeListeners removeAllObjects];
3255 }
3256
3257 - (void)caretChanged
3258 {
3259     [_private->_caretChangeListener caretChanged];
3260     NSSet *copy = [_private->_caretChangeListeners copy];
3261     for (id <WebCaretChangeListener> listener in copy) {
3262         [listener caretChanged];
3263     }
3264     [copy release];
3265 }
3266
3267 - (void)_clearDelegates
3268 {
3269     ASSERT(WebThreadIsLocked() || !WebThreadIsEnabled());
3270     
3271     [self _setFormDelegate:nil];
3272     [self _setUIKitDelegate:nil];
3273     [self setCaretChangeListener:nil];
3274     [self removeAllCaretChangeListeners];
3275     [self setWebMailDelegate:nil];
3276     
3277     [self setDownloadDelegate:nil];
3278     [self setEditingDelegate:nil]; 
3279     [self setFrameLoadDelegate:nil];
3280     [self setPolicyDelegate:nil];
3281     [self setResourceLoadDelegate:nil];
3282     [self setScriptDebugDelegate:nil];
3283     [self setUIDelegate:nil];     
3284 }
3285
3286 - (NSURL *)_displayURL
3287 {
3288     WebThreadLock();
3289     WebFrame *frame = [self mainFrame];
3290     // FIXME: <rdar://problem/6362369> We used to get provisionalDataSource here if in provisional state; how do we tell that now? Is this right?
3291     WebDataSource *dataSource = [frame provisionalDataSource];
3292     if (!dataSource)
3293         dataSource = [frame dataSource];
3294     NSURL *unreachableURL = [dataSource unreachableURL];
3295     NSURL *URL = unreachableURL != nil ? unreachableURL : [[dataSource request] URL];
3296     [[URL retain] autorelease];
3297     return URL;
3298 }
3299 #endif // PLATFORM(IOS)
3300
3301 #if !PLATFORM(IOS)
3302 - (void)setAlwaysShowVerticalScroller:(BOOL)flag
3303 {
3304     WebDynamicScrollBarsView *scrollview = [[[self mainFrame] frameView] _scrollView];
3305     if (flag) {
3306         [scrollview setVerticalScrollingMode:ScrollbarAlwaysOn andLock:YES];
3307     } else {
3308         [scrollview setVerticalScrollingModeLocked:NO];
3309         [scrollview setVerticalScrollingMode:ScrollbarAuto andLock:NO];
3310     }
3311 }
3312
3313 - (BOOL)alwaysShowVerticalScroller
3314 {
3315     WebDynamicScrollBarsView *scrollview = [[[self mainFrame] frameView] _scrollView];
3316     return [scrollview verticalScrollingModeLocked] && [scrollview verticalScrollingMode] == ScrollbarAlwaysOn;
3317 }
3318
3319 - (void)setAlwaysShowHorizontalScroller:(BOOL)flag
3320 {
3321     WebDynamicScrollBarsView *scrollview = [[[self mainFrame] frameView] _scrollView];
3322     if (flag) {
3323         [scrollview setHorizontalScrollingMode:ScrollbarAlwaysOn andLock:YES];
3324     } else {
3325         [scrollview setHorizontalScrollingModeLocked:NO];
3326         [scrollview setHorizontalScrollingMode:ScrollbarAuto andLock:NO];
3327     }
3328 }
3329
3330 - (void)setProhibitsMainFrameScrolling:(BOOL)prohibits
3331 {
3332     if (Frame* mainFrame = [self _mainCoreFrame])
3333         mainFrame->view()->setProhibitsScrolling(prohibits);
3334 }
3335
3336 - (BOOL)alwaysShowHorizontalScroller
3337 {
3338     WebDynamicScrollBarsView *scrollview = [[[self mainFrame] frameView] _scrollView];
3339     return [scrollview horizontalScrollingModeLocked] && [scrollview horizontalScrollingMode] == ScrollbarAlwaysOn;
3340 }
3341 #endif // !PLATFORM(IOS)
3342
3343 - (void)_setUseFastImageScalingMode:(BOOL)flag
3344 {
3345     if (_private->page && _private->page->inLowQualityImageInterpolationMode() != flag) {
3346         _private->page->setInLowQualityImageInterpolationMode(flag);
3347         [self setNeedsDisplay:YES];
3348     }
3349 }
3350
3351 - (BOOL)_inFastImageScalingMode
3352 {
3353     if (_private->page)
3354         return _private->page->inLowQualityImageInterpolationMode();
3355     return NO;
3356 }
3357
3358 - (BOOL)_cookieEnabled
3359 {
3360     if (_private->page)
3361         return _private->page->settings().cookieEnabled();
3362     return YES;
3363 }
3364
3365 - (void)_setCookieEnabled:(BOOL)enable
3366 {
3367     if (_private->page)
3368         _private->page->settings().setCookieEnabled(enable);
3369 }
3370
3371 #if !PLATFORM(IOS)
3372 - (void)_setAdditionalWebPlugInPaths:(NSArray *)newPaths
3373 {
3374     if (!_private->pluginDatabase)
3375         _private->pluginDatabase = [[WebPluginDatabase alloc] init];
3376         
3377     [_private->pluginDatabase setPlugInPaths:newPaths];
3378     [_private->pluginDatabase refresh];
3379 }
3380 #endif
3381
3382 #if PLATFORM(IOS)
3383 - (BOOL)_locked_plugInsAreRunningInFrame:(WebFrame *)frame
3384 {
3385     // Ask plug-ins in this frame
3386     id <WebDocumentView> documentView = [[frame frameView] documentView];
3387     if (documentView && [documentView isKindOfClass:[WebHTMLView class]]) {
3388         if ([[(WebHTMLView *)documentView _pluginController] plugInsAreRunning])
3389             return YES;
3390     }
3391
3392     // Ask 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         if ([self _locked_plugInsAreRunningInFrame:[childFrames objectAtIndex:childIndex]])
3398             return YES;
3399     }
3400     
3401     return NO;
3402 }
3403
3404 - (BOOL)_pluginsAreRunning
3405 {
3406     WebThreadLock();
3407     return [self _locked_plugInsAreRunningInFrame:[self mainFrame]];
3408 }
3409
3410 - (void)_locked_recursivelyPerformPlugInSelector:(SEL)selector inFrame:(WebFrame *)frame
3411 {
3412     // Send the message to plug-ins in this frame
3413     id <WebDocumentView> documentView = [[frame frameView] documentView];
3414     if (documentView && [documentView isKindOfClass:[WebHTMLView class]])
3415         [[(WebHTMLView *)documentView _pluginController] performSelector:selector];
3416
3417     // Send the message to plug-ins in child frames
3418     NSArray *childFrames = [frame childFrames];
3419     unsigned childCount = [childFrames count];
3420     unsigned childIndex;
3421     for (childIndex = 0; childIndex < childCount; childIndex++) {
3422         [self _locked_recursivelyPerformPlugInSelector:selector inFrame:[childFrames objectAtIndex:childIndex]];
3423     }
3424 }
3425
3426 - (void)_destroyAllPlugIns
3427 {
3428     WebThreadLock();
3429     [self _locked_recursivelyPerformPlugInSelector:@selector(destroyAllPlugins) inFrame:[self mainFrame]];
3430 }
3431
3432 - (void)_clearBackForwardCache
3433 {
3434     WebThreadRun(^{
3435         WebKit::MemoryMeasure measurer("[WebView _clearBackForwardCache]");
3436         BackForwardList* bfList = core([self backForwardList]);
3437         if (!bfList)
3438             return;
3439
3440         BOOL didClearBFCache = bfList->clearAllPageCaches();
3441         if (WebKit::MemoryMeasure::isLoggingEnabled())
3442             NSLog(@"[WebView _clearBackForwardCache] %@ empty cache\n", (didClearBFCache ? @"DID" : @"did NOT"));
3443     });
3444 }
3445
3446 - (void)_startAllPlugIns
3447 {
3448     WebThreadLock();
3449     [self _locked_recursivelyPerformPlugInSelector:@selector(startAllPlugins) inFrame:[self mainFrame]];
3450 }
3451
3452 - (void)_stopAllPlugIns
3453 {
3454     WebThreadLock();
3455     [self _locked_recursivelyPerformPlugInSelector:@selector(stopAllPlugins) inFrame:[self mainFrame]];
3456 }
3457
3458 - (void)_stopAllPlugInsForPageCache
3459 {
3460     WebThreadLock();
3461     [self _locked_recursivelyPerformPlugInSelector:@selector(stopPluginsForPageCache) inFrame:[self mainFrame]];
3462 }
3463
3464 - (void)_restorePlugInsFromCache
3465 {
3466     WebThreadLock();
3467     [self _locked_recursivelyPerformPlugInSelector:@selector(restorePluginsFromCache) inFrame:[self mainFrame]];
3468 }
3469
3470 - (BOOL)_setMediaLayer:(CALayer*)layer forPluginView:(NSView*)pluginView
3471 {
3472     WebThreadLock();
3473
3474     Frame* mainCoreFrame = [self _mainCoreFrame];
3475     for (Frame* frame = mainCoreFrame; frame; frame = frame->tree().traverseNext()) {
3476         FrameView* coreView = frame ? frame->view() : 0;
3477         if (!coreView)
3478             continue;
3479
3480         // Get the GraphicsLayer for this widget.
3481         GraphicsLayer* layerForWidget = coreView->graphicsLayerForPlatformWidget(pluginView);
3482         if (!layerForWidget)
3483             continue;
3484         
3485         if (layerForWidget->contentsLayerForMedia() != layer) {
3486             layerForWidget->setContentsToMedia(layer);
3487             // We need to make sure the layer hierachy change is applied immediately.
3488             if (mainCoreFrame->view())
3489                 mainCoreFrame->view()->flushCompositingStateIncludingSubframes();
3490             return YES;
3491         }
3492     }
3493
3494     return NO;
3495 }
3496
3497 - (void)_setNeedsUnrestrictedGetMatchedCSSRules:(BOOL)flag
3498 {
3499     if (_private->page)
3500         _private->page->settings().setCrossOriginCheckInGetMatchedCSSRulesDisabled(flag);
3501 }
3502 #endif // PLATFORM(IOS)
3503
3504 - (void)_attachScriptDebuggerToAllFrames
3505 {
3506     for (Frame* frame = [self _mainCoreFrame]; frame; frame = frame->tree().traverseNext())
3507         [kit(frame) _attachScriptDebugger];
3508 }
3509
3510 - (void)_detachScriptDebuggerFromAllFrames
3511 {
3512     for (Frame* frame = [self _mainCoreFrame]; frame; frame = frame->tree().traverseNext())
3513         [kit(frame) _detachScriptDebugger];
3514 }
3515
3516 #if !PLATFORM(IOS)
3517 - (void)setBackgroundColor:(NSColor *)backgroundColor
3518 {
3519     if ([_private->backgroundColor isEqual:backgroundColor])
3520         return;
3521
3522     id old = _private->backgroundColor;
3523     _private->backgroundColor = [backgroundColor retain];
3524     [old release];
3525
3526     [[self mainFrame] _updateBackgroundAndUpdatesWhileOffscreen];
3527 }
3528
3529 - (NSColor *)backgroundColor
3530 {
3531     return _private->backgroundColor;
3532 }
3533 #else
3534 - (void)setBackgroundColor:(CGColorRef)backgroundColor
3535 {
3536    if (!backgroundColor || CFEqual(_private->backgroundColor, backgroundColor))
3537         return;
3538
3539     CFTypeRef old = _private->backgroundColor;
3540     CFRetain(backgroundColor);
3541     _private->backgroundColor = backgroundColor;
3542     CFRelease(old);
3543
3544     [[self mainFrame] _updateBackgroundAndUpdatesWhileOffscreen];
3545 }
3546
3547 - (CGColorRef)backgroundColor
3548 {
3549     return _private->backgroundColor;
3550 }
3551 #endif
3552
3553 - (BOOL)defersCallbacks
3554 {
3555     if (!_private->page)
3556         return NO;
3557     return _private->page->defersLoading();
3558 }
3559
3560 - (void)setDefersCallbacks:(BOOL)defer
3561 {
3562     if (!_private->page)
3563         return;
3564     return _private->page->setDefersLoading(defer);
3565 }
3566
3567 #if TARGET_OS_IPHONE && USE(QUICK_LOOK)
3568 - (NSDictionary *)quickLookContentForURL:(NSURL *)url
3569 {
3570     NSString *uti = qlPreviewConverterUTIForURL(url);
3571     if (!uti)
3572         return nil;
3573
3574     NSString *fileName = qlPreviewConverterFileNameForURL(url);
3575     if (!fileName)
3576         return nil;
3577
3578     return [NSDictionary dictionaryWithObjectsAndKeys: fileName, WebQuickLookFileNameKey, uti, WebQuickLookUTIKey, nil];
3579 }
3580 #endif
3581
3582 #if PLATFORM(IOS)
3583 - (BOOL)_isStopping
3584 {
3585     return _private->isStopping;
3586 }
3587
3588 - (BOOL)_isClosing
3589 {
3590     return _private->closing;
3591 }
3592
3593 + (NSArray *)_productivityDocumentMIMETypes
3594 {
3595 #if USE(QUICK_LOOK)
3596     return [QLPreviewGetSupportedMIMETypesSet() allObjects];
3597 #else
3598     return nil;
3599 #endif
3600 }
3601
3602 - (void)_setAllowsMessaging:(BOOL)aFlag
3603 {
3604     _private->allowsMessaging = aFlag;
3605 }
3606
3607 - (BOOL)_allowsMessaging
3608 {
3609     return _private->allowsMessaging;
3610 }
3611
3612 - (void)_setFixedLayoutSize:(CGSize)size
3613 {
3614     ASSERT(WebThreadIsLocked());
3615     _private->fixedLayoutSize = size;
3616     if (Frame* mainFrame = core([self mainFrame])) {
3617         IntSize newSize(size);
3618         mainFrame->view()->setFixedLayoutSize(newSize);
3619         mainFrame->view()->setUseFixedLayout(!newSize.isEmpty());
3620         [self setNeedsDisplay:YES];
3621     }
3622 }
3623
3624 - (CGSize)_fixedLayoutSize
3625 {
3626     return _private->fixedLayoutSize;
3627 }
3628
3629 - (void)_synchronizeCustomFixedPositionLayoutRect
3630 {
3631     ASSERT(WebThreadIsLocked());
3632
3633     IntRect newRect;
3634     {
3635         MutexLocker locker(_private->pendingFixedPositionLayoutRectMutex);
3636         if (CGRectIsNull(_private->pendingFixedPositionLayoutRect))
3637             return;
3638         newRect = enclosingIntRect(_private->pendingFixedPositionLayoutRect);
3639         _private->pendingFixedPositionLayoutRect = CGRectNull;
3640     }
3641
3642     if (Frame* mainFrame = core([self mainFrame]))
3643         mainFrame->view()->setCustomFixedPositionLayoutRect(newRect);
3644 }
3645
3646 - (void)_setCustomFixedPositionLayoutRectInWebThread:(CGRect)rect synchronize:(BOOL)synchronize
3647 {
3648     {
3649         MutexLocker locker(_private->pendingFixedPositionLayoutRectMutex);
3650         _private->pendingFixedPositionLayoutRect = rect;
3651     }
3652     if (!synchronize)
3653         return;
3654     WebThreadRun(^{
3655         [self _synchronizeCustomFixedPositionLayoutRect];
3656     });
3657 }
3658
3659 - (void)_setCustomFixedPositionLayoutRect:(CGRect)rect
3660 {
3661     ASSERT(WebThreadIsLocked());
3662     {
3663         MutexLocker locker(_private->pendingFixedPositionLayoutRectMutex);
3664         _private->pendingFixedPositionLayoutRect = rect;
3665     }
3666     [self _synchronizeCustomFixedPositionLayoutRect];
3667 }
3668
3669 - (BOOL)_fetchCustomFixedPositionLayoutRect:(NSRect*)rect
3670 {
3671     MutexLocker locker(_private->pendingFixedPositionLayoutRectMutex);
3672     if (CGRectIsNull(_private->pendingFixedPositionLayoutRect))
3673         return false;
3674
3675     *rect = _private->pendingFixedPositionLayoutRect;
3676     _private->pendingFixedPositionLayoutRect = CGRectNull;
3677     return true;
3678 }
3679
3680 - (void)_viewGeometryDidChange
3681 {
3682     ASSERT(WebThreadIsLocked());
3683     
3684     if (Frame* coreFrame = [self _mainCoreFrame])
3685         coreFrame->viewportOffsetChanged(Frame::IncrementalScrollOffset);
3686 }
3687
3688 - (void)_overflowScrollPositionChangedTo:(CGPoint)offset forNode:(DOMNode *)domNode isUserScroll:(BOOL)userScroll
3689 {
3690     // Find the frame
3691     Node* node = core(domNode);
3692     Frame* frame = node->document().frame();
3693     if (!frame)
3694         return;
3695
3696     frame->overflowScrollPositionChangedForNode(roundedIntPoint(offset), node, userScroll);
3697 }
3698
3699 + (void)_doNotStartObservingNetworkReachability
3700 {
3701     Settings::setShouldOptOutOfNetworkStateObservation(true);
3702 }
3703 #endif // PLATFORM(IOS)
3704
3705 #if ENABLE(TOUCH_EVENTS)
3706 - (NSArray *)_touchEventRegions
3707 {
3708     Frame* frame = [self _mainCoreFrame];
3709     if (!frame)
3710         return nil;
3711     
3712     Document* document = frame->document();
3713     if (!document)
3714         return nil;
3715
3716     Vector<IntRect> rects;
3717     document->getTouchRects(rects);
3718
3719     if (rects.size() == 0)
3720         return nil;
3721
3722     NSMutableArray *eventRegionArray = [[[NSMutableArray alloc] initWithCapacity:rects.size()] autorelease];
3723
3724     Vector<IntRect>::const_iterator end = rects.end();
3725     for (Vector<IntRect>::const_iterator it = rects.begin(); it != end; ++it) {
3726         const IntRect& rect = *it;
3727         if (rect.isEmpty())
3728             continue;
3729
3730         // The event region wants this points in this order:
3731         //  p2------p3
3732         //  |       |
3733         //  p1------p4
3734         //
3735         WebEventRegion *eventRegion = [[WebEventRegion alloc] initWithPoints:FloatPoint(rect.x(), rect.maxY())
3736                                                                             :FloatPoint(rect.x(), rect.y())
3737                                                                             :FloatPoint(rect.maxX(), rect.y())
3738                                                                             :FloatPoint(rect.maxX(), rect.maxY())];
3739         if (eventRegion) {
3740             [eventRegionArray addObject:eventRegion];
3741             [eventRegion release];
3742         }
3743     }
3744
3745     return eventRegionArray;
3746 }
3747 #endif // ENABLE(TOUCH_EVENTS)
3748
3749 // For backwards compatibility with the WebBackForwardList API, we honor both
3750 // a per-WebView and a per-preferences setting for whether to use the page cache.
3751
3752 - (BOOL)usesPageCache
3753 {
3754     return _private->usesPageCache && [[self preferences] usesPageCache];
3755 }
3756
3757 - (void)setUsesPageCache:(BOOL)usesPageCache
3758 {
3759     _private->usesPageCache = usesPageCache;
3760
3761     // Update our own settings and post the public notification only
3762     [self _preferencesChanged:[self preferences]];
3763     [[self preferences] _postPreferencesChangedAPINotification];
3764 }
3765
3766 - (WebHistoryItem *)_globalHistoryItem
3767 {
3768     if (!_private)
3769         return nil;
3770
3771     return kit(_private->_globalHistoryItem.get());
3772 }
3773
3774 - (void)_setGlobalHistoryItem:(HistoryItem*)historyItem
3775 {
3776     _private->_globalHistoryItem = historyItem;
3777 }
3778
3779 - (WebTextIterator *)textIteratorForRect:(NSRect)rect
3780 {
3781     IntPoint rectStart(rect.origin.x, rect.origin.y);
3782     IntPoint rectEnd(rect.origin.x + rect.size.width, rect.origin.y + rect.size.height);
3783     
3784     Frame* coreFrame = [self _mainCoreFrame];
3785     if (!coreFrame)
3786         return nil;
3787     
3788     VisibleSelection selectionInsideRect(coreFrame->visiblePositionForPoint(rectStart), coreFrame->visiblePositionForPoint(rectEnd));
3789     
3790     return [[[WebTextIterator alloc] initWithRange:kit(selectionInsideRect.toNormalizedRange().get())] autorelease];
3791 }
3792
3793 #if ENABLE(DASHBOARD_SUPPORT)
3794 - (void)handleAuthenticationForResource:(id)identifier challenge:(NSURLAuthenticationChallenge *)challenge fromDataSource:(WebDataSource *)dataSource 
3795 {
3796     NSWindow *window = [self hostWindow] ? [self hostWindow] : [self window]; 
3797     [[WebPanelAuthenticationHandler sharedHandler] startAuthentication:challenge window:window]; 
3798
3799 #endif
3800
3801 #if !PLATFORM(IOS)
3802 - (void)_clearUndoRedoOperations
3803 {
3804     if (!_private->page)
3805         return;
3806     _private->page->clearUndoRedoOperations();
3807 }
3808 #endif
3809
3810 - (void)_executeCoreCommandByName:(NSString *)name value:(NSString *)value
3811 {
3812     Frame* coreFrame = [self _mainCoreFrame];
3813     if (!coreFrame)
3814         return;
3815     coreFrame->editor().command(name).execute(value);
3816 }
3817
3818 - (void)_clearMainFrameName
3819 {
3820     _private->page->mainFrame().tree().clearName();
3821 }
3822
3823 - (void)setSelectTrailingWhitespaceEnabled:(BOOL)flag
3824 {
3825     if (_private->page->settings().selectTrailingWhitespaceEnabled() != flag) {
3826         _private->page->settings().setSelectTrailingWhitespaceEnabled(flag);
3827         [self setSmartInsertDeleteEnabled:!flag];
3828     }
3829 }
3830
3831 - (BOOL)isSelectTrailingWhitespaceEnabled
3832 {
3833     return _private->page->settings().selectTrailingWhitespaceEnabled();
3834 }
3835
3836 - (void)setMemoryCacheDelegateCallsEnabled:(BOOL)enabled
3837 {
3838     _private->page->setMemoryCacheClientCallsEnabled(enabled);
3839 }
3840
3841 - (BOOL)areMemoryCacheDelegateCallsEnabled
3842 {
3843     return _private->page->areMemoryCacheClientCallsEnabled();
3844 }
3845
3846 #if !PLATFORM(IOS)
3847 + (NSCursor *)_pointingHandCursor
3848 {
3849     return handCursor().platformCursor();
3850 }
3851 #endif
3852
3853 - (BOOL)_postsAcceleratedCompositingNotifications
3854 {
3855     return _private->postsAcceleratedCompositingNotifications;
3856 }
3857 - (void)_setPostsAcceleratedCompositingNotifications:(BOOL)flag
3858 {
3859     _private->postsAcceleratedCompositingNotifications = flag;
3860 }
3861
3862 - (BOOL)_isUsingAcceleratedCompositing
3863 {
3864     Frame* coreFrame = [self _mainCoreFrame];
3865     for (Frame* frame = coreFrame; frame; frame = frame->tree().traverseNext(coreFrame)) {
3866         NSView *documentView = [[kit(frame) frameView] documentView];
3867         if ([documentView isKindOfClass:[WebHTMLView class]] && [(WebHTMLView *)documentView _isUsingAcceleratedCompositing])
3868             return YES;
3869     }
3870
3871     return NO;
3872 }
3873
3874 - (BOOL)_flushCompositingChanges
3875 {
3876     Frame* frame = [self _mainCoreFrame];
3877     if (frame && frame->view())
3878         return frame->view()->flushCompositingStateIncludingSubframes();
3879
3880     return YES;
3881 }
3882
3883 - (void)_setBaseCTM:(CGAffineTransform)transform forContext:(CGContextRef)context
3884 {
3885     WKSetBaseCTM(context, transform);
3886 }
3887
3888 - (BOOL)interactiveFormValidationEnabled
3889 {
3890     return _private->interactiveFormValidationEnabled;
3891 }
3892
3893 - (void)setInteractiveFormValidationEnabled:(BOOL)enabled
3894 {
3895     _private->interactiveFormValidationEnabled = enabled;
3896 }
3897
3898 - (int)validationMessageTimerMagnification
3899 {
3900     return _private->validationMessageTimerMagnification;
3901 }
3902
3903 - (void)setValidationMessageTimerMagnification:(int)newValue
3904 {
3905     _private->validationMessageTimerMagnification = newValue;
3906 }
3907
3908 - (BOOL)_isSoftwareRenderable
3909 {
3910     Frame* coreFrame = [self _mainCoreFrame];
3911     for (Frame* frame = coreFrame; frame; frame = frame->tree().traverseNext(coreFrame)) {
3912         if (FrameView* view = frame->view()) {
3913             if (!view->isSoftwareRenderable())
3914                 return NO;
3915         }
3916     }
3917
3918     return YES;
3919 }
3920
3921 - (void)_setIncludesFlattenedCompositingLayersWhenDrawingToBitmap:(BOOL)flag
3922 {
3923     _private->includesFlattenedCompositingLayersWhenDrawingToBitmap = flag;
3924 }
3925
3926 - (BOOL)_includesFlattenedCompositingLayersWhenDrawingToBitmap
3927 {
3928     return _private->includesFlattenedCompositingLayersWhenDrawingToBitmap;
3929 }
3930
3931 - (void)setTracksRepaints:(BOOL)flag
3932 {
3933     Frame* coreFrame = [self _mainCoreFrame];
3934     if (FrameView* view = coreFrame->view())
3935         view->setTracksRepaints(flag);
3936 }
3937
3938 - (BOOL)isTrackingRepaints
3939 {
3940     Frame* coreFrame = [self _mainCoreFrame];
3941     if (FrameView* view = coreFrame->view())
3942         return view->isTrackingRepaints();
3943     
3944     return NO;
3945 }
3946
3947 - (void)resetTrackedRepaints
3948 {
3949     Frame* coreFrame = [self _mainCoreFrame];
3950     if (FrameView* view = coreFrame->view())
3951         view->resetTrackedRepaints();
3952 }
3953
3954 - (NSArray*)trackedRepaintRects
3955 {
3956     Frame* coreFrame = [self _mainCoreFrame];
3957     FrameView* view = coreFrame->view();
3958     if (!view || !view->isTrackingRepaints())
3959         return nil;
3960
3961     const Vector<FloatRect>& repaintRects = view->trackedRepaintRects();
3962     NSMutableArray* rectsArray = [[NSMutableArray alloc] initWithCapacity:repaintRects.size()];
3963     
3964     for (unsigned i = 0; i < repaintRects.size(); ++i)
3965         [rectsArray addObject:[NSValue valueWithRect:pixelSnappedIntRect(LayoutRect(repaintRects[i]))]];
3966
3967     return [rectsArray autorelease];
3968 }
3969
3970 #if !PLATFORM(IOS)
3971 - (NSPasteboard *)_insertionPasteboard
3972 {
3973     return _private ? _private->insertionPasteboard : nil;
3974 }
3975 #endif
3976
3977 + (void)_addOriginAccessWhitelistEntryWithSourceOrigin:(NSString *)sourceOrigin destinationProtocol:(NSString *)destinationProtocol destinationHost:(NSString *)destinationHost allowDestinationSubdomains:(BOOL)allowDestinationSubdomains
3978 {
3979     SecurityPolicy::addOriginAccessWhitelistEntry(*SecurityOrigin::createFromString(sourceOrigin), destinationProtocol, destinationHost, allowDestinationSubdomains);
3980 }
3981
3982 + (void)_removeOriginAccessWhitelistEntryWithSourceOrigin:(NSString *)sourceOrigin destinationProtocol:(NSString *)destinationProtocol destinationHost:(NSString *)destinationHost allowDestinationSubdomains:(BOOL)allowDestinationSubdomains
3983 {
3984     SecurityPolicy::removeOriginAccessWhitelistEntry(*SecurityOrigin::createFromString(sourceOrigin), destinationProtocol, destinationHost, allowDestinationSubdomains);
3985 }
3986
3987 + (void)_resetOriginAccessWhitelists
3988 {
3989     SecurityPolicy::resetOriginAccessWhitelists();
3990 }
3991
3992 - (BOOL)_isViewVisible
3993 {
3994     if (![self window])
3995         return false;
3996
3997     if (![[self window] isVisible])
3998         return false;
3999
4000     if ([self isHiddenOrHasHiddenAncestor])
4001         return false;
4002
4003     return true;
4004 }
4005
4006 - (void)_updateVisibilityState
4007 {
4008     if (_private && _private->page)
4009         [self _setIsVisible:[self _isViewVisible]];
4010 }
4011
4012 - (void)_updateActiveState
4013 {
4014     if (_private && _private->page)
4015 #if PLATFORM(IOS)
4016         _private->page->focusController().setActive([[self window] isKeyWindow]);
4017 #else
4018         _private->page->focusController().setActive([[self window] _hasKeyAppearance]);
4019 #endif
4020 }
4021
4022 static Vector<String> toStringVector(NSArray* patterns)
4023 {
4024     Vector<String> patternsVector;
4025
4026     NSUInteger count = [patterns count];
4027     if (!count)
4028         return patternsVector;
4029
4030     for (NSUInteger i = 0; i < count; ++i) {
4031         id entry = [patterns objectAtIndex:i];
4032         if ([entry isKindOfClass:[NSString class]])
4033             patternsVector.append(String((NSString *)entry));
4034     }
4035     return patternsVector;
4036 }
4037
4038 + (void)_addUserScriptToGroup:(NSString *)groupName world:(WebScriptWorld *)world source:(NSString *)source url:(NSURL *)url
4039                     whitelist:(NSArray *)whitelist blacklist:(NSArray *)blacklist
4040                 injectionTime:(WebUserScriptInjectionTime)injectionTime
4041 {
4042     [WebView _addUserScriptToGroup:groupName world:world source:source url:url whitelist:whitelist blacklist:blacklist injectionTime:injectionTime injectedFrames:WebInjectInAllFrames];
4043 }
4044
4045 + (void)_addUserScriptToGroup:(NSString *)groupName world:(WebScriptWorld *)world source:(NSString *)source url:(NSURL *)url
4046                     whitelist:(NSArray *)whitelist blacklist:(NSArray *)blacklist
4047                 injectionTime:(WebUserScriptInjectionTime)injectionTime
4048                injectedFrames:(WebUserContentInjectedFrames)injectedFrames
4049 {
4050     String group(groupName);
4051     if (group.isEmpty())
4052         return;
4053     
4054     PageGroup* pageGroup = PageGroup::pageGroup(group);
4055     if (!pageGroup)
4056         return;
4057
4058     if (!world)
4059         return;
4060
4061     pageGroup->addUserScriptToWorld(*core(world), source, url, toStringVector(whitelist), toStringVector(blacklist),
4062                                     injectionTime == WebInjectAtDocumentStart ? InjectAtDocumentStart : InjectAtDocumentEnd,
4063                                     injectedFrames == WebInjectInAllFrames ? InjectInAllFrames : InjectInTopFrameOnly);
4064 }
4065
4066 + (void)_addUserStyleSheetToGroup:(NSString *)groupName world:(WebScriptWorld *)world source:(NSString *)source url:(NSURL *)url
4067                         whitelist:(NSArray *)whitelist blacklist:(NSArray *)blacklist
4068 {
4069     [WebView _addUserStyleSheetToGroup:groupName world:world source:source url:url whitelist:whitelist blacklist:blacklist injectedFrames:WebInjectInAllFrames];
4070 }
4071
4072 + (void)_addUserStyleSheetToGroup:(NSString *)groupName world:(WebScriptWorld *)world source:(NSString *)source url:(NSURL *)url
4073                         whitelist:(NSArray *)whitelist blacklist:(NSArray *)blacklist
4074                    injectedFrames:(WebUserContentInjectedFrames)injectedFrames
4075 {
4076     String group(groupName);
4077     if (group.isEmpty())
4078         return;
4079     
4080     PageGroup* pageGroup = PageGroup::pageGroup(group);
4081     if (!pageGroup)
4082         return;
4083
4084     if (!world)
4085         return;
4086
4087     pageGroup->addUserStyleSheetToWorld(*core(world), source, url, toStringVector(whitelist), toStringVector(blacklist), injectedFrames == WebInjectInAllFrames ? InjectInAllFrames : InjectInTopFrameOnly);
4088 }
4089
4090 + (void)_removeUserScriptFromGroup:(NSString *)groupName world:(WebScriptWorld *)world url:(NSURL *)url
4091 {
4092     String group(groupName);
4093     if (group.isEmpty())
4094         return;
4095     
4096     PageGroup* pageGroup = PageGroup::pageGroup(group);
4097     if (!pageGroup)
4098         return;
4099
4100     if (!world)
4101         return;
4102
4103     pageGroup->removeUserScriptFromWorld(*core(world), url);
4104 }
4105
4106 + (void)_removeUserStyleSheetFromGroup:(NSString *)groupName world:(WebScriptWorld *)world url:(NSURL *)url
4107 {
4108     String group(groupName);
4109     if (group.isEmpty())
4110         return;
4111     
4112     PageGroup* pageGroup = PageGroup::pageGroup(group);
4113     if (!pageGroup)
4114         return;
4115
4116     if (!world)
4117         return;
4118
4119     pageGroup->removeUserStyleSheetFromWorld(*core(world), url);
4120 }
4121
4122 + (void)_removeUserScriptsFromGroup:(NSString *)groupName world:(WebScriptWorld *)world
4123 {
4124     String group(groupName);
4125     if (group.isEmpty())
4126         return;
4127     
4128     PageGroup* pageGroup = PageGroup::pageGroup(group);
4129     if (!pageGroup)
4130         return;
4131
4132     if (!world)
4133         return;
4134
4135     pageGroup->removeUserScriptsFromWorld(*core(world));
4136 }
4137
4138 + (void)_removeUserStyleSheetsFromGroup:(NSString *)groupName world:(WebScriptWorld *)world
4139 {
4140     String group(groupName);
4141     if (group.isEmpty())
4142         return;
4143     
4144     PageGroup* pageGroup = PageGroup::pageGroup(group);
4145     if (!pageGroup)
4146         return;
4147
4148     if (!world)
4149         return;
4150
4151     pageGroup->removeUserStyleSheetsFromWorld(*core(world));
4152 }
4153
4154 + (void)_removeAllUserContentFromGroup:(NSString *)groupName
4155 {
4156     String group(groupName);
4157     if (group.isEmpty())
4158         return;
4159     
4160     PageGroup* pageGroup = PageGroup::pageGroup(group);
4161     if (!pageGroup)
4162         return;
4163     
4164     pageGroup->removeAllUserContent();
4165 }
4166
4167 - (BOOL)allowsNewCSSAnimationsWhileSuspended
4168 {
4169     Frame* frame = core([self mainFrame]);
4170     if (frame)
4171         return frame->animation().allowsNewAnimationsWhileSuspended();
4172
4173     return false;
4174 }
4175
4176 - (void)setAllowsNewCSSAnimationsWhileSuspended:(BOOL)allowed
4177 {
4178     Frame* frame = core([self mainFrame]);
4179     if (frame)
4180         frame->animation().setAllowsNewAnimationsWhileSuspended(allowed);
4181 }
4182
4183 - (BOOL)cssAnimationsSuspended
4184 {
4185     // should ask the page!
4186     Frame* frame = core([self mainFrame]);
4187     if (frame)
4188         return frame->animation().isSuspended();
4189
4190     return false;
4191 }
4192
4193 - (void)setCSSAnimationsSuspended:(BOOL)suspended
4194 {
4195     Frame* frame = core([self mainFrame]);
4196     if (suspended == frame->animation().isSuspended())
4197         return;
4198         
4199     if (suspended)
4200         frame->animation().suspendAnimations();
4201     else
4202         frame->animation().resumeAnimations();
4203 }
4204
4205 + (void)_setDomainRelaxationForbidden:(BOOL)forbidden forURLScheme:(NSString *)scheme
4206 {
4207     SchemeRegistry::setDomainRelaxationForbiddenForURLScheme(forbidden, scheme);
4208 }
4209
4210 + (void)_registerURLSchemeAsSecure:(NSString *)scheme
4211 {
4212     SchemeRegistry::registerURLSchemeAsSecure(scheme);
4213 }
4214
4215 + (void)_registerURLSchemeAsAllowingLocalStorageAccessInPrivateBrowsing:(NSString *)scheme
4216 {
4217     SchemeRegistry::registerURLSchemeAsAllowingLocalStorageAccessInPrivateBrowsing(scheme);
4218 }
4219
4220 + (void)_registerURLSchemeAsAllowingDatabaseAccessInPrivateBrowsing:(NSString *)scheme
4221 {
4222     SchemeRegistry::registerURLSchemeAsAllowingDatabaseAccessInPrivateBrowsing(scheme);
4223 }
4224
4225 - (void)_scaleWebView:(float)scale atOrigin:(NSPoint)origin
4226 {
4227     _private->page->setPageScaleFactor(scale, IntPoint(origin));
4228 }
4229
4230 - (float)_viewScaleFactor
4231 {
4232     return _private->page->pageScaleFactor();
4233 }
4234
4235 - (void)_setUseFixedLayout:(BOOL)fixed
4236 {
4237     Frame* coreFrame = [self _mainCoreFrame];
4238     if (!coreFrame)
4239         return;
4240
4241     FrameView* view = coreFrame->view();
4242     if (!view)
4243         return;
4244
4245     view->setUseFixedLayout(fixed);
4246     if (!fixed)
4247         view->setFixedLayoutSize(IntSize());
4248 }
4249
4250 #if !PLATFORM(IOS)
4251 - (void)_setFixedLayoutSize:(NSSize)size
4252 {
4253     Frame* coreFrame = [self _mainCoreFrame];
4254     if (!coreFrame)
4255         return;
4256     
4257     FrameView* view = coreFrame->view();
4258     if (!view)
4259         return;
4260     
4261     view->setFixedLayoutSize(IntSize(size));
4262     view->forceLayout();
4263 }
4264 #endif
4265
4266 - (BOOL)_useFixedLayout
4267 {
4268     Frame* coreFrame = [self _mainCoreFrame];
4269     if (!coreFrame)
4270         return NO;
4271     
4272     FrameView* view = coreFrame->view();
4273     if (!view)
4274         return NO;