Change DeferrableOneShotTimer to use std::function instead of being a class template
[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::setShouldManageAudioSessionCategory(true);
907 #endif
908
909         didOneTimeInitialization = true;
910     }
911
912     Page::PageClients pageClients;
913 #if !PLATFORM(IOS)
914     pageClients.chromeClient = new WebChromeClient(self);
915     pageClients.contextMenuClient = new WebContextMenuClient(self);
916 #if ENABLE(DRAG_SUPPORT)
917     pageClients.dragClient = new WebDragClient(self);
918 #endif
919     pageClients.inspectorClient = new WebInspectorClient(self);
920 #else
921     pageClients.chromeClient = new WebChromeClientIOS(self);
922     pageClients.inspectorClient = new WebInspectorClient(self);
923 #endif
924     pageClients.editorClient = new WebEditorClient(self);
925     pageClients.alternativeTextClient = new WebAlternativeTextClient(self);
926     pageClients.loaderClientForMainFrame = new WebFrameLoaderClient;
927     pageClients.progressTrackerClient = new WebProgressTrackerClient(self);
928     _private->page = new Page(pageClients);
929 #if ENABLE(GEOLOCATION)
930     WebCore::provideGeolocationTo(_private->page, new WebGeolocationClient(self));
931 #endif
932 #if ENABLE(NOTIFICATIONS) || ENABLE(LEGACY_NOTIFICATIONS)
933     WebCore::provideNotification(_private->page, new WebNotificationClient(self));
934 #endif
935 #if ENABLE(DEVICE_ORIENTATION)
936 #if !PLATFORM(IOS)
937     WebCore::provideDeviceOrientationTo(_private->page, new WebDeviceOrientationClient(self));
938 #endif
939 #endif
940 #if ENABLE(MEDIA_STREAM)
941     WebCore::provideUserMediaTo(_private->page, new WebUserMediaClient(self));
942 #endif
943
944 #if ENABLE(REMOTE_INSPECTOR)
945     _private->page->setRemoteInspectionAllowed(true);
946 #endif
947
948     _private->page->setCanStartMedia([self window]);
949     _private->page->settings().setLocalStorageDatabasePath([[self preferences] _localStorageDatabasePath]);
950     _private->page->settings().setUseLegacyBackgroundSizeShorthandBehavior(shouldUseLegacyBackgroundSizeShorthandBehavior());
951
952 #if !PLATFORM(IOS)
953     if (needsOutlookQuirksScript()) {
954         _private->page->settings().setShouldInjectUserScriptsInInitialEmptyDocument(true);
955         [self _injectOutlookQuirksScript];
956     }
957 #endif
958
959 #if PLATFORM(IOS)
960     // Preserve the behavior we had before <rdar://problem/7580867>
961     // by enforcing a 5MB limit for session storage.
962     _private->page->settings().setSessionStorageQuota(5 * 1024 * 1024);
963
964     [self _updateScreenScaleFromWindow];
965     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_wakWindowScreenScaleChanged:) name:WAKWindowScreenScaleDidChangeNotification object:nil];
966     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_wakWindowVisibilityChanged:) name:WAKWindowVisibilityDidChangeNotification object:nil];
967     _private->_fixedPositionContent = [[WebFixedPositionContent alloc] initWithWebView:self];
968 #endif
969
970     if ([[NSUserDefaults standardUserDefaults] objectForKey:WebSmartInsertDeleteEnabled])
971         [self setSmartInsertDeleteEnabled:[[NSUserDefaults standardUserDefaults] boolForKey:WebSmartInsertDeleteEnabled]];
972
973     [WebFrame _createMainFrameWithPage:_private->page frameName:frameName frameView:frameView];
974
975 #if !PLATFORM(IOS)
976     NSRunLoop *runLoop = [NSRunLoop mainRunLoop];
977
978     if (WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_LOADING_DURING_COMMON_RUNLOOP_MODES))
979         [self scheduleInRunLoop:runLoop forMode:(NSString *)kCFRunLoopCommonModes];
980     else
981         [self scheduleInRunLoop:runLoop forMode:NSDefaultRunLoopMode];
982 #endif
983
984     [self _addToAllWebViewsSet];
985     [self setGroupName:groupName];
986     
987     // If there's already a next key view (e.g., from a nib), wire it up to our
988     // contained frame view. In any case, wire our next key view up to the our
989     // contained frame view. This works together with our becomeFirstResponder 
990     // and setNextKeyView overrides.
991     NSView *nextKeyView = [self nextKeyView];
992     if (nextKeyView && nextKeyView != frameView)
993         [frameView setNextKeyView:nextKeyView];
994     [super setNextKeyView:frameView];
995
996     if ([[self class] shouldIncludeInWebKitStatistics])
997         ++WebViewCount;
998
999 #if !PLATFORM(IOS)
1000     [self _registerDraggedTypes];
1001 #endif
1002
1003     [self _setIsVisible:[self _isViewVisible]];
1004
1005     WebPreferences *prefs = [self preferences];
1006     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_preferencesChangedNotification:)
1007                                                  name:WebPreferencesChangedInternalNotification object:prefs];
1008
1009 #if !PLATFORM(IOS)
1010     [self _preferencesChanged:[self preferences]];
1011     [[self preferences] _postPreferencesChangedAPINotification];
1012 #else
1013     // do this on the current thread on iOS, since the web thread could be blocked on the main thread,
1014     // and prefs need to be changed synchronously <rdar://problem/5841558>
1015     [self _preferencesChanged:prefs];
1016     _private->page->settings().setFontFallbackPrefersPictographs(true);
1017 #endif
1018
1019     memoryPressureHandler().install();
1020
1021     if (!WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_LOCAL_RESOURCE_SECURITY_RESTRICTION)) {
1022         // Originally, we allowed all local loads.
1023         SecurityPolicy::setLocalLoadPolicy(SecurityPolicy::AllowLocalLoadsForAll);
1024     } else if (!WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_MORE_STRICT_LOCAL_RESOURCE_SECURITY_RESTRICTION)) {
1025         // Later, we allowed local loads for local URLs and documents loaded
1026         // with substitute data.
1027         SecurityPolicy::setLocalLoadPolicy(SecurityPolicy::AllowLocalLoadsForLocalAndSubstituteData);
1028     }
1029
1030 #if !PLATFORM(IOS)
1031     if (!WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITHOUT_CONTENT_SNIFFING_FOR_FILE_URLS))
1032         ResourceHandle::forceContentSniffing();
1033 #endif
1034
1035 #if USE(GLIB)
1036     [self _scheduleGlibContextIterations];
1037 #endif
1038 }
1039
1040 - (id)_initWithFrame:(NSRect)f frameName:(NSString *)frameName groupName:(NSString *)groupName usesDocumentViews:(BOOL)usesDocumentViews
1041 {
1042     // FIXME: Remove the usesDocumentViews parameter; it's only here for compatibility with WebKit nightly builds
1043     // running against Safari 5 on Leopard.
1044     ASSERT(usesDocumentViews);
1045
1046     self = [super initWithFrame:f];
1047     if (!self)
1048         return nil;
1049
1050 #ifdef ENABLE_WEBKIT_UNSET_DYLD_FRAMEWORK_PATH
1051     // DYLD_FRAMEWORK_PATH is used so Safari will load the development version of WebKit, which
1052     // may not work with other WebKit applications.  Unsetting DYLD_FRAMEWORK_PATH removes the
1053     // need for Safari to unset it to prevent it from being passed to applications it launches.
1054     // Unsetting it when a WebView is first created is as good a place as any.
1055     // See <http://bugs.webkit.org/show_bug.cgi?id=4286> for more details.
1056     if (getenv("WEBKIT_UNSET_DYLD_FRAMEWORK_PATH")) {
1057         unsetenv("DYLD_FRAMEWORK_PATH");
1058         unsetenv("WEBKIT_UNSET_DYLD_FRAMEWORK_PATH");
1059     }
1060 #endif
1061
1062     _private = [[WebViewPrivate alloc] init];
1063     [self _commonInitializationWithFrameName:frameName groupName:groupName];
1064     [self setMaintainsBackForwardList: YES];
1065 #if !PLATFORM(IOS)
1066     _private->page->setDeviceScaleFactor([self _deviceScaleFactor]);
1067 #endif
1068     return self;
1069 }
1070
1071 - (void)_viewWillDrawInternal
1072 {
1073     Frame* frame = [self _mainCoreFrame];
1074     if (frame && frame->view())
1075         frame->view()->updateLayoutAndStyleIfNeededRecursive();
1076 }
1077
1078 + (NSArray *)_supportedMIMETypes
1079 {
1080     // Load the plug-in DB allowing plug-ins to install types.
1081     [WebPluginDatabase sharedDatabase];
1082     return [[WebFrameView _viewTypesAllowImageTypeOmission:NO] allKeys];
1083 }
1084
1085 #if !PLATFORM(IOS)
1086 + (NSArray *)_supportedFileExtensions
1087 {
1088     NSMutableSet *extensions = [[NSMutableSet alloc] init];
1089     NSArray *MIMETypes = [self _supportedMIMETypes];
1090     NSEnumerator *enumerator = [MIMETypes objectEnumerator];
1091     NSString *MIMEType;
1092     while ((MIMEType = [enumerator nextObject]) != nil) {
1093         NSArray *extensionsForType = WKGetExtensionsForMIMEType(MIMEType);
1094         if (extensionsForType) {
1095             [extensions addObjectsFromArray:extensionsForType];
1096         }
1097     }
1098     NSArray *uniqueExtensions = [extensions allObjects];
1099     [extensions release];
1100     return uniqueExtensions;
1101 }
1102 #endif
1103
1104 #if PLATFORM(IOS)
1105 + (void)enableWebThread
1106 {
1107     static BOOL isWebThreadEnabled = NO;
1108     if (!isWebThreadEnabled) {
1109         WebCoreObjCDeallocOnWebThread([WebBasePluginPackage class]);
1110         WebCoreObjCDeallocOnWebThread([WebDataSource class]);
1111         WebCoreObjCDeallocOnWebThread([WebFrame class]);
1112         WebCoreObjCDeallocOnWebThread([WebHTMLView class]);
1113         WebCoreObjCDeallocOnWebThread([WebHistoryItem class]);
1114         WebCoreObjCDeallocOnWebThread([WebPlainWhiteView class]);
1115         WebCoreObjCDeallocOnWebThread([WebPolicyDecisionListener class]);
1116         WebCoreObjCDeallocOnWebThread([WebView class]);
1117         WebCoreObjCDeallocOnWebThread([WebVisiblePosition class]);
1118         if (applicationIsTheEconomistOnIPhone() && !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_DELEGATE_CALLS_IN_COMMON_RUNLOOP_MODES))
1119             WebThreadSetDelegateSourceRunLoopMode(kCFRunLoopDefaultMode);
1120         WebThreadEnable();
1121         isWebThreadEnabled = YES;
1122     }
1123 }
1124
1125 - (id)initSimpleHTMLDocumentWithStyle:(NSString *)style frame:(CGRect)frame preferences:(WebPreferences *)preferences groupName:(NSString *)groupName
1126 {
1127     self = [super initWithFrame:frame];
1128     if (!self)
1129         return nil;
1130     
1131     _private = [[WebViewPrivate alloc] init];
1132     
1133 #ifndef NDEBUG
1134     WTF::RefCountedLeakCounter::suppressMessages(webViewIsOpen);
1135 #endif
1136     
1137     if (!preferences)
1138         preferences = [WebPreferences standardPreferences];
1139     [preferences willAddToWebView];
1140     
1141     _private->preferences = [preferences retain];
1142     _private->mainFrameDocumentReady = NO;
1143     _private->drawsBackground = YES;
1144     _private->backgroundColor = CGColorRetain(cachedCGColor(Color::white, ColorSpaceDeviceRGB));
1145     
1146     WebFrameView *frameView = nil;
1147     frameView = [[WebFrameView alloc] initWithFrame: CGRectMake(0,0,frame.size.width,frame.size.height)];
1148     [frameView setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
1149     [self addSubview:frameView];
1150     [frameView release];
1151
1152     
1153     Page::PageClients pageClients;
1154     pageClients.chromeClient = new WebChromeClientIOS(self);
1155 #if ENABLE(DRAG_SUPPORT)
1156     pageClients.dragClient = new WebDragClient(self);
1157 #endif
1158     pageClients.editorClient = new WebEditorClient(self);
1159     pageClients.inspectorClient = new WebInspectorClient(self);
1160     pageClients.loaderClientForMainFrame = new WebFrameLoaderClient;
1161     pageClients.progressTrackerClient = new WebProgressTrackerClient(self);
1162     _private->page = new Page(pageClients);
1163     
1164     [self setSmartInsertDeleteEnabled:YES];
1165     
1166     // FIXME: <rdar://problem/6851451> Should respect preferences in fast path WebView initialization
1167     // We are ignoring the preferences object on fast path and just using Settings defaults (everything fancy off).
1168     // This matches how UIKit sets up the preferences. We need to set  default values for fonts though, <rdar://problem/6850611>.
1169     // This should be revisited later. There is some risk involved, _preferencesChanged used to show up badly in Shark.
1170     _private->page->settings().setMinimumLogicalFontSize(9);
1171     _private->page->settings().setDefaultFontSize([_private->preferences defaultFontSize]);
1172     _private->page->settings().setDefaultFixedFontSize(13);
1173     _private->page->settings().setDownloadableBinaryFontsEnabled(false);
1174     _private->page->settings().setAcceleratedDrawingEnabled([preferences acceleratedDrawingEnabled]);
1175     _private->page->settings().setScreenFontSubstitutionEnabled(false);
1176     
1177     // FIXME: <rdar://problem/7394370> Always use primary font baseline in text field base line calculation, ignore fallback fonts.
1178     _private->page->settings().setAlwaysUseBaselineOfPrimaryFont([preferences _alwaysUseBaselineOfPrimaryFont]);
1179
1180     _private->page->settings().setFontFallbackPrefersPictographs(true);
1181     _private->page->settings().setPictographFontFamily("AppleColorEmoji");
1182     
1183     // FIXME: this is a workaround for <rdar://problem/11518688> REGRESSION: Quoted text font changes when replying to certain email
1184     _private->page->settings().setStandardFontFamily([_private->preferences standardFontFamily]);
1185     
1186     // FIXME: this is a workaround for <rdar://problem/11820090> Quoted text changes in size when replying to certain email
1187     _private->page->settings().setMinimumFontSize([_private->preferences minimumFontSize]);
1188
1189     [self setGroupName:groupName];
1190
1191 #if ENABLE(REMOTE_INSPECTOR)
1192     // Production installs always disallow debugging simple HTML documents.
1193     // Internal installs allow debugging simple HTML documents (TextFields) if the Internal Setting is enabled.
1194     if (!isInternalInstall())
1195         _private->page->setRemoteInspectionAllowed(false);
1196     else {
1197         static BOOL textFieldInspectionEnabled = [[NSUserDefaults standardUserDefaults] boolForKey:WebKitTextFieldRemoteInspectionEnabledPreferenceKey];
1198         _private->page->setRemoteInspectionAllowed(textFieldInspectionEnabled);
1199     }
1200 #endif
1201     
1202     [self _updateScreenScaleFromWindow];
1203     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_wakWindowScreenScaleChanged:) name:WAKWindowScreenScaleDidChangeNotification object:nil];
1204     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_wakWindowVisibilityChanged:) name:WAKWindowVisibilityDidChangeNotification object:nil];
1205
1206     [WebFrame _createMainFrameWithSimpleHTMLDocumentWithPage:_private->page frameView:frameView style:style];
1207     
1208     [self _addToAllWebViewsSet];
1209     
1210     ++WebViewCount;
1211     
1212     SecurityPolicy::setLocalLoadPolicy(SecurityPolicy::AllowLocalLoadsForLocalAndSubstituteData);
1213     
1214     return self;
1215 }
1216
1217 + (void)_handleMemoryWarning
1218 {
1219     ASSERT(WebThreadIsCurrent());
1220     WebKit::MemoryMeasure totalMemory("Memory warning: Overall memory change from [WebView _handleMemoryWarning].");
1221
1222     // Always peform the following.
1223     [WebView purgeInactiveFontData];
1224
1225     // Only perform the remaining if a non-simple document was created.
1226     if (!didOneTimeInitialization)
1227         return;
1228
1229     tileControllerMemoryHandler().trimUnparentedTilesToTarget(0);
1230
1231 #if ENABLE(DISK_IMAGE_CACHE)
1232     {
1233         WebKit::MemoryMeasure measurer("Memory warning: flushing images to disk.");
1234         WebCore::memoryCache()->flushCachedImagesToDisk();
1235     }
1236 #endif
1237
1238     [WebStorageManager closeIdleLocalStorageDatabases];
1239
1240     [WebView _releaseMemoryNow];
1241 }
1242
1243 + (void)registerForMemoryNotifications
1244 {
1245     BOOL shouldAutoClearPressureOnMemoryRelease = !WebCore::applicationIsMobileSafari();
1246
1247     memoryPressureHandler().installMemoryReleaseBlock(^{
1248         [WebView _handleMemoryWarning];
1249     }, shouldAutoClearPressureOnMemoryRelease);
1250
1251 #if PLATFORM(IOS) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
1252     static dispatch_source_t memoryNotificationEventSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_MEMORYSTATUS, 0, DISPATCH_MEMORYSTATUS_PRESSURE_WARN, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0));
1253 #else
1254     static dispatch_source_t memoryNotificationEventSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_VM, 0, DISPATCH_VM_PRESSURE, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0));
1255 #endif
1256     dispatch_source_set_event_handler(memoryNotificationEventSource, ^{
1257         // Set memory pressure flag and schedule releasing memory in web thread runloop exit.
1258         memoryPressureHandler().setReceivedMemoryPressure(WebCore::MemoryPressureReasonVMPressure);
1259     });
1260
1261     dispatch_resume(memoryNotificationEventSource);
1262
1263     if (!shouldAutoClearPressureOnMemoryRelease) {
1264         // Listen to memory status notification to reset the memory pressure flag.
1265         static dispatch_source_t memoryStatusEventSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_MEMORYSTATUS,
1266                                                                                     0,
1267                                                                                     DISPATCH_MEMORYSTATUS_PRESSURE_WARN | DISPATCH_MEMORYSTATUS_PRESSURE_NORMAL,
1268                                                                                     dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0));
1269         dispatch_source_set_event_handler(memoryStatusEventSource, ^{
1270             unsigned long currentStatus = dispatch_source_get_data(memoryStatusEventSource);
1271             if (currentStatus == DISPATCH_MEMORYSTATUS_PRESSURE_NORMAL)
1272                 memoryPressureHandler().clearMemoryPressure();
1273             else if (currentStatus == DISPATCH_MEMORYSTATUS_PRESSURE_WARN)
1274                 memoryPressureHandler().setReceivedMemoryPressure(WebCore::MemoryPressureReasonVMStatus);
1275         });
1276
1277         dispatch_resume(memoryStatusEventSource);
1278     }
1279 }
1280
1281 + (void)_releaseMemoryNow
1282 {
1283     ASSERT(WebThreadIsCurrent());
1284     [WebView discardAllCompiledCode];
1285     [WebView garbageCollectNow];
1286     [WebView purgeInactiveFontData];
1287     [WebView drainLayerPool];
1288     [WebCache emptyInMemoryResources];
1289     [WebView releaseFastMallocMemoryOnCurrentThread];
1290
1291     dispatch_async(dispatch_get_main_queue(), ^{
1292         // Clear the main thread's TCMalloc thread cache.
1293         [WebView releaseFastMallocMemoryOnCurrentThread];
1294     });
1295 }
1296
1297 + (void)_clearPrivateBrowsingSessionCookieStorage
1298 {
1299     WebFrameNetworkingContext::clearPrivateBrowsingSessionCookieStorage();
1300 }
1301
1302 - (void)_replaceCurrentHistoryItem:(WebHistoryItem *)item
1303 {
1304     Frame* frame = [self _mainCoreFrame];
1305     if (frame)
1306         frame->loader().history().replaceCurrentItem(core(item));
1307 }
1308
1309 + (void)willEnterBackgroundWithCompletionHandler:(void(^)(void))handler
1310 {
1311     WebThreadRun(^{
1312         [WebView _releaseMemoryNow];
1313         dispatch_async(dispatch_get_main_queue(), handler);
1314     });
1315 }
1316
1317 + (void)releaseFastMallocMemoryOnCurrentThread
1318 {
1319     WebKit::MemoryMeasure measurer("Memory warning: Releasing fast malloc memory to system.");
1320     WTF::releaseFastMallocFreeMemory();
1321 }
1322
1323 + (void)garbageCollectNow
1324 {
1325     ASSERT(WebThreadIsCurrent());
1326     WebKit::MemoryMeasure measurer("Memory warning: Calling JavaScript GC.");
1327     gcController().garbageCollectNow();
1328 }
1329
1330 + (void)purgeInactiveFontData
1331 {
1332     ASSERT(WebThreadIsCurrent());
1333     WebKit::MemoryMeasure measurer("Memory warning: Purging inactive font data.");
1334     fontCache().purgeInactiveFontData();
1335 }
1336
1337 + (void)drainLayerPool
1338 {
1339     ASSERT(WebThreadIsCurrent());
1340     WebKit::MemoryMeasure measurer("Memory warning: Draining layer pool.");
1341     WebCore::LegacyTileCache::drainLayerPool();
1342 }
1343
1344 + (void)discardAllCompiledCode
1345 {
1346     ASSERT(WebThreadIsCurrent());
1347     WebKit::MemoryMeasure measurer("Memory warning: Discarding JIT'ed code.");
1348     gcController().discardAllCompiledCode();
1349 }
1350
1351 + (BOOL)isCharacterSmartReplaceExempt:(unichar)character isPreviousCharacter:(BOOL)b
1352 {
1353     return WebCore::isCharacterSmartReplaceExempt(character, b);
1354 }
1355
1356 - (void)updateLayoutIgnorePendingStyleSheets
1357 {
1358     WebThreadRun(^{
1359         for (Frame* frame = [self _mainCoreFrame]; frame; frame = frame->tree().traverseNext()) {
1360             Document *document = frame->document();
1361             if (document)
1362                 document->updateLayoutIgnorePendingStylesheets();
1363         }
1364     });
1365 }
1366 #endif // PLATFORM(IOS)
1367
1368 static NSMutableSet *knownPluginMIMETypes()
1369 {
1370     static NSMutableSet *mimeTypes = [[NSMutableSet alloc] init];
1371     
1372     return mimeTypes;
1373 }
1374
1375 + (void)_registerPluginMIMEType:(NSString *)MIMEType
1376 {
1377     [WebView registerViewClass:[WebHTMLView class] representationClass:[WebHTMLRepresentation class] forMIMEType:MIMEType];
1378     [knownPluginMIMETypes() addObject:MIMEType];
1379 }
1380
1381 + (void)_unregisterPluginMIMEType:(NSString *)MIMEType
1382 {
1383     [self _unregisterViewClassAndRepresentationClassForMIMEType:MIMEType];
1384     [knownPluginMIMETypes() removeObject:MIMEType];
1385 }
1386
1387 + (BOOL)_viewClass:(Class *)vClass andRepresentationClass:(Class *)rClass forMIMEType:(NSString *)MIMEType allowingPlugins:(BOOL)allowPlugins
1388 {
1389     MIMEType = [MIMEType lowercaseString];
1390     Class viewClass = [[WebFrameView _viewTypesAllowImageTypeOmission:YES] _webkit_objectForMIMEType:MIMEType];
1391     Class repClass = [[WebDataSource _repTypesAllowImageTypeOmission:YES] _webkit_objectForMIMEType:MIMEType];
1392
1393 #if PLATFORM(IOS)
1394 #define WebPDFView ([WebView _getPDFViewClass])
1395 #endif
1396     if (!viewClass || !repClass || [[WebPDFView supportedMIMETypes] containsObject:MIMEType]) {
1397 #if PLATFORM(IOS)
1398 #undef WebPDFView
1399 #endif
1400         // Our optimization to avoid loading the plug-in DB and image types for the HTML case failed.
1401
1402         if (allowPlugins) {
1403             // Load the plug-in DB allowing plug-ins to install types.
1404             [WebPluginDatabase sharedDatabase];
1405         }
1406
1407         // Load the image types and get the view class and rep class. This should be the fullest picture of all handled types.
1408         viewClass = [[WebFrameView _viewTypesAllowImageTypeOmission:NO] _webkit_objectForMIMEType:MIMEType];
1409         repClass = [[WebDataSource _repTypesAllowImageTypeOmission:NO] _webkit_objectForMIMEType:MIMEType];
1410     }
1411     
1412     if (viewClass && repClass) {
1413         if (viewClass == [WebHTMLView class] && repClass == [WebHTMLRepresentation class]) {
1414             // Special-case WebHTMLView for text types that shouldn't be shown.
1415             if ([[WebHTMLView unsupportedTextMIMETypes] containsObject:MIMEType])
1416                 return NO;
1417
1418             // If the MIME type is a known plug-in we might not want to load it.
1419             if (!allowPlugins && [knownPluginMIMETypes() containsObject:MIMEType]) {
1420                 BOOL isSupportedByWebKit = [[WebHTMLView supportedNonImageMIMETypes] containsObject:MIMEType] ||
1421                     [[WebHTMLView supportedMIMETypes] containsObject:MIMEType];
1422                 
1423                 // If this is a known plug-in MIME type and WebKit can't show it natively, we don't want to show it.
1424                 if (!isSupportedByWebKit)
1425                     return NO;
1426             }
1427         }
1428         if (vClass)
1429             *vClass = viewClass;
1430         if (rClass)
1431             *rClass = repClass;
1432         return YES;
1433     }
1434     
1435     return NO;
1436 }
1437
1438 - (BOOL)_viewClass:(Class *)vClass andRepresentationClass:(Class *)rClass forMIMEType:(NSString *)MIMEType
1439 {
1440     if ([[self class] _viewClass:vClass andRepresentationClass:rClass forMIMEType:MIMEType allowingPlugins:[_private->preferences arePlugInsEnabled]])
1441         return YES;
1442 #if !PLATFORM(IOS)
1443     if (_private->pluginDatabase) {
1444         WebBasePluginPackage *pluginPackage = [_private->pluginDatabase pluginForMIMEType:MIMEType];
1445         if (pluginPackage) {
1446             if (vClass)
1447                 *vClass = [WebHTMLView class];
1448             if (rClass)
1449                 *rClass = [WebHTMLRepresentation class];
1450             return YES;
1451         }
1452     }
1453 #endif
1454     return NO;
1455 }
1456
1457 #if !PLATFORM(IOS)
1458 + (void)_setAlwaysUseATSU:(BOOL)f
1459 {
1460     [self _setAlwaysUsesComplexTextCodePath:f];
1461 }
1462 #endif
1463
1464 + (void)_setAlwaysUsesComplexTextCodePath:(BOOL)f
1465 {
1466     Font::setCodePath(f ? Font::Complex : Font::Auto);
1467 }
1468
1469 + (void)_setAllowsRoundingHacks:(BOOL)allowsRoundingHacks
1470 {
1471     TextRun::setAllowsRoundingHacks(allowsRoundingHacks);
1472 }
1473
1474 + (BOOL)_allowsRoundingHacks
1475 {
1476     return TextRun::allowsRoundingHacks();
1477 }
1478
1479 + (BOOL)canCloseAllWebViews
1480 {
1481     return DOMWindow::dispatchAllPendingBeforeUnloadEvents();
1482 }
1483
1484 + (void)closeAllWebViews
1485 {
1486     DOMWindow::dispatchAllPendingUnloadEvents();
1487
1488     // This will close the WebViews in a random order. Change this if close order is important.
1489     // Make a new set to avoid mutating the set we are enumerating.
1490     NSSet *webViewsToClose = [NSSet setWithSet:(NSSet *)allWebViewsSet]; 
1491     NSEnumerator *enumerator = [webViewsToClose objectEnumerator];
1492     while (WebView *webView = [enumerator nextObject])
1493         [webView close];
1494 }
1495
1496 + (BOOL)canShowFile:(NSString *)path
1497 {
1498     return [[self class] canShowMIMEType:[WebView _MIMETypeForFile:path]];
1499 }
1500
1501 #if !PLATFORM(IOS)
1502 + (NSString *)suggestedFileExtensionForMIMEType:(NSString *)type
1503 {
1504     return WKGetPreferredExtensionForMIMEType(type);
1505 }
1506 #endif
1507
1508 - (BOOL)_isClosed
1509 {
1510     return !_private || _private->closed;
1511 }
1512
1513 #if PLATFORM(IOS)
1514 - (void)_dispatchUnloadEvent
1515 {
1516     WebThreadRun(^{
1517         WebFrame *mainFrame = [self mainFrame];
1518         Frame *coreMainFrame = core(mainFrame);
1519         if (coreMainFrame) {
1520             Document *document = coreMainFrame->document();
1521             if (document)
1522                 document->dispatchWindowEvent(Event::create(eventNames().unloadEvent, false, false));
1523         }
1524     });
1525 }
1526
1527 - (DOMCSSStyleDeclaration *)styleAtSelectionStart
1528 {
1529     WebFrame *mainFrame = [self mainFrame];
1530     Frame *coreMainFrame = core(mainFrame);
1531     if (!coreMainFrame)
1532         return nil;
1533     return coreMainFrame->styleAtSelectionStart();
1534 }
1535
1536 - (NSUInteger)_renderTreeSize
1537 {
1538     if (!_private->page)
1539         return 0;
1540     return _private->page->renderTreeSize();
1541 }
1542
1543 - (void)_dispatchTileDidDraw:(CALayer*)tile
1544 {
1545     id mailDelegate = [self _webMailDelegate];
1546     if ([mailDelegate respondsToSelector:@selector(_webthread_webView:tileDidDraw:)]) {
1547         [mailDelegate _webthread_webView:self tileDidDraw:tile];
1548         return;
1549     }
1550
1551     if (!OSAtomicCompareAndSwap32(0, 1, &_private->didDrawTiles))
1552         return;
1553
1554     WebThreadLock();
1555
1556     [[[self _UIKitDelegateForwarder] asyncForwarder] webViewDidDrawTiles:self];
1557 }
1558
1559 - (void)_willStartScrollingOrZooming
1560 {
1561     // Pause timers during top level interaction
1562     if (_private->mainViewIsScrollingOrZooming)
1563         return;
1564     _private->mainViewIsScrollingOrZooming = YES;
1565
1566     // This suspends active DOM objects like timers, but not media.
1567     [[self mainFrame] setTimeoutsPaused:YES];
1568
1569     // This defers loading callbacks only.
1570     // WARNING: This behavior could change if Bug 49401 lands in open source WebKit again.
1571     [self setDefersCallbacks:YES];
1572 }
1573
1574 - (void)_didFinishScrollingOrZooming
1575 {
1576     if (!_private->mainViewIsScrollingOrZooming)
1577         return;
1578     _private->mainViewIsScrollingOrZooming = NO;
1579     [self setDefersCallbacks:NO];
1580     [[self mainFrame] setTimeoutsPaused:NO];
1581     FrameView* view = [self _mainCoreFrame]->view();
1582     if (view && view->renderView())
1583         view->renderView()->resumePausedImageAnimationsIfNeeded();
1584 }
1585
1586 - (void)_setResourceLoadSchedulerSuspended:(BOOL)suspend
1587 {
1588     if (suspend)
1589         resourceLoadScheduler()->suspendPendingRequests();
1590     else
1591         resourceLoadScheduler()->resumePendingRequests();
1592 }
1593
1594 + (void)_setAcceleratedImageDecoding:(BOOL)enabled
1595 {
1596     UNUSED_PARAM(enabled);
1597 }
1598
1599 + (void)_setAllowCookies:(BOOL)allow
1600 {
1601     ResourceRequestBase::setDefaultAllowCookies(allow);
1602 }
1603
1604 + (BOOL)_allowCookies
1605 {
1606     return ResourceRequestBase::defaultAllowCookies();
1607 }
1608
1609 + (BOOL)_isUnderMemoryPressure
1610 {
1611     return memoryPressureHandler().isUnderMemoryPressure();
1612 }
1613
1614 + (void)_clearMemoryPressure
1615 {
1616     memoryPressureHandler().clearMemoryPressure();
1617 }
1618
1619 + (BOOL)_shouldWaitForMemoryClearMessage
1620 {
1621     return memoryPressureHandler().shouldWaitForMemoryClearMessage();
1622 }
1623 #endif // PLATFORM(IOS)
1624
1625 - (void)_closePluginDatabases
1626 {
1627     pluginDatabaseClientCount--;
1628
1629     // Close both sets of plug-in databases because plug-ins need an opportunity to clean up files, etc.
1630
1631 #if !PLATFORM(IOS)
1632     // Unload the WebView local plug-in database. 
1633     if (_private->pluginDatabase) {
1634         [_private->pluginDatabase destroyAllPluginInstanceViews];
1635         [_private->pluginDatabase close];
1636         [_private->pluginDatabase release];
1637         _private->pluginDatabase = nil;
1638     }
1639 #endif
1640     
1641     // Keep the global plug-in database active until the app terminates to avoid having to reload plug-in bundles.
1642     if (!pluginDatabaseClientCount && applicationIsTerminating)
1643         [WebPluginDatabase closeSharedDatabase];
1644 }
1645
1646 - (void)_closeWithFastTeardown 
1647 {
1648 #ifndef NDEBUG
1649     WTF::RefCountedLeakCounter::suppressMessages("At least one WebView was closed with fast teardown.");
1650 #endif
1651
1652 #if !PLATFORM(IOS)
1653     [[NSDistributedNotificationCenter defaultCenter] removeObserver:self];
1654 #endif
1655     [[NSNotificationCenter defaultCenter] removeObserver:self];
1656
1657     [self _closePluginDatabases];
1658 }
1659
1660 static bool fastDocumentTeardownEnabled()
1661 {
1662 #ifdef NDEBUG
1663     static bool enabled = ![[NSUserDefaults standardUserDefaults] boolForKey:WebKitEnableFullDocumentTeardownPreferenceKey];
1664 #else
1665     static bool initialized = false;
1666     static bool enabled = false;
1667     if (!initialized) {
1668         // This allows debug builds to default to not have fast teardown, so leak checking still works.
1669         // But still allow the WebKitEnableFullDocumentTeardown default to override it if present.
1670         NSNumber *setting = [[NSUserDefaults standardUserDefaults] objectForKey:WebKitEnableFullDocumentTeardownPreferenceKey];
1671         if (setting)
1672             enabled = ![setting boolValue];
1673         initialized = true;
1674     }
1675 #endif
1676     return enabled;
1677 }
1678
1679 // _close is here only for backward compatibility; clients and subclasses should use
1680 // public method -close instead.
1681 - (void)_close
1682 {
1683 #if PLATFORM(IOS)
1684     // Always clear delegates on calling thread, becasue caller can deallocate delegates right after calling -close
1685     // (and could in fact already be in delegate's -dealloc method, as seen in <rdar://problem/11540972>).
1686
1687     [self _clearDelegates];
1688
1689     // Fix for problems such as <rdar://problem/5774587> Crash closing tab in WebCore::Frame::page() from -[WebCoreFrameBridge pauseTimeouts]
1690     WebThreadRun(^{
1691 #endif            
1692
1693     if (!_private || _private->closed)
1694         return;
1695
1696     [[NSNotificationCenter defaultCenter] postNotificationName:WebViewWillCloseNotification object:self];
1697
1698     _private->closed = YES;
1699     [self _removeFromAllWebViewsSet];
1700
1701 #ifndef NDEBUG
1702     WTF::RefCountedLeakCounter::cancelMessageSuppression(webViewIsOpen);
1703 #endif
1704
1705     // To quit the apps fast we skip document teardown, except plugins
1706     // need to be destroyed and unloaded.
1707     if (applicationIsTerminating && fastDocumentTeardownEnabled()) {
1708         [self _closeWithFastTeardown];
1709         return;
1710     }
1711
1712 #if ENABLE(VIDEO) && !PLATFORM(IOS)
1713     [self _exitFullscreen];
1714 #endif
1715
1716 #if PLATFORM(IOS)
1717     _private->closing = YES;
1718 #endif
1719
1720     if (Frame* mainFrame = [self _mainCoreFrame])
1721         mainFrame->loader().detachFromParent();
1722
1723     [self setHostWindow:nil];
1724
1725 #if !PLATFORM(IOS)
1726     [self setDownloadDelegate:nil];
1727     [self setEditingDelegate:nil];
1728     [self setFrameLoadDelegate:nil];
1729     [self setPolicyDelegate:nil];
1730     [self setResourceLoadDelegate:nil];
1731     [self setScriptDebugDelegate:nil];
1732     [self setUIDelegate:nil];
1733
1734     [_private->inspector webViewClosed];
1735 #endif
1736
1737 #if !PLATFORM(IOS)
1738     // To avoid leaks, call removeDragCaret in case it wasn't called after moveDragCaretToPoint.
1739     [self removeDragCaret];
1740 #endif
1741
1742     _private->group->removeWebView(self);
1743
1744     // Deleteing the WebCore::Page will clear the page cache so we call destroy on
1745     // all the plug-ins in the page cache to break any retain cycles.
1746     // See comment in HistoryItem::releaseAllPendingPageCaches() for more information.
1747     Page* page = _private->page;
1748     _private->page = 0;
1749     delete page;
1750
1751 #if !PLATFORM(IOS)
1752     if (_private->hasSpellCheckerDocumentTag) {
1753         [[NSSpellChecker sharedSpellChecker] closeSpellDocumentWithTag:_private->spellCheckerDocumentTag];
1754         _private->hasSpellCheckerDocumentTag = NO;
1755     }
1756 #endif
1757
1758     if (_private->layerFlushController) {
1759         _private->layerFlushController->invalidate();
1760         _private->layerFlushController = nullptr;
1761     }
1762     
1763 #if USE(GLIB)
1764     [self _clearGlibLoopObserver];
1765 #endif
1766
1767     [[self _notificationProvider] unregisterWebView:self];
1768
1769 #if !PLATFORM(IOS)
1770     [[NSDistributedNotificationCenter defaultCenter] removeObserver:self];
1771 #endif
1772     [[NSNotificationCenter defaultCenter] removeObserver:self];
1773
1774     [WebPreferences _removeReferenceForIdentifier:[self preferencesIdentifier]];
1775
1776     WebPreferences *preferences = _private->preferences;
1777     _private->preferences = nil;
1778     [preferences didRemoveFromWebView];
1779     [preferences release];
1780
1781     [self _closePluginDatabases];
1782
1783 #ifndef NDEBUG
1784     // Need this to make leak messages accurate.
1785     if (applicationIsTerminating) {
1786         gcController().garbageCollectNow();
1787         [WebCache setDisabled:YES];
1788     }
1789 #endif
1790 #if PLATFORM(IOS)
1791     // Fix for problems such as <rdar://problem/5774587> Crash closing tab in WebCore::Frame::page() from -[WebCoreFrameBridge pauseTimeouts]
1792     });
1793 #endif            
1794 }
1795
1796 // Indicates if the WebView is in the midst of a user gesture.
1797 - (BOOL)_isProcessingUserGesture
1798 {
1799     return ScriptController::processingUserGesture();
1800 }
1801
1802 + (NSString *)_MIMETypeForFile:(NSString *)path
1803 {
1804 #if !PLATFORM(IOS)
1805     NSString *extension = [path pathExtension];
1806 #endif
1807     NSString *MIMEType = nil;
1808
1809 #if !PLATFORM(IOS)
1810     // Get the MIME type from the extension.
1811     if ([extension length] != 0) {
1812         MIMEType = WKGetMIMETypeForExtension(extension);
1813     }
1814 #endif
1815
1816     // If we can't get a known MIME type from the extension, sniff.
1817     if ([MIMEType length] == 0 || [MIMEType isEqualToString:@"application/octet-stream"]) {
1818         NSFileHandle *handle = [NSFileHandle fileHandleForReadingAtPath:path];
1819         NSData *data = [handle readDataOfLength:WEB_GUESS_MIME_TYPE_PEEK_LENGTH];
1820         [handle closeFile];
1821         if ([data length] != 0) {
1822             MIMEType = [data _webkit_guessedMIMEType];
1823         }
1824         if ([MIMEType length] == 0) {
1825             MIMEType = @"application/octet-stream";
1826         }
1827     }
1828
1829     return MIMEType;
1830 }
1831
1832 - (WebDownload *)_downloadURL:(NSURL *)URL
1833 {
1834     ASSERT(URL);
1835     
1836     NSURLRequest *request = [[NSURLRequest alloc] initWithURL:URL];
1837     WebDownload *download = [WebDownload _downloadWithRequest:request
1838                                                      delegate:_private->downloadDelegate
1839                                                     directory:nil];
1840     [request release];
1841     
1842     return download;
1843 }
1844
1845 - (WebView *)_openNewWindowWithRequest:(NSURLRequest *)request
1846 {
1847     NSDictionary *features = [[NSDictionary alloc] init];
1848     WebView *newWindowWebView = [[self _UIDelegateForwarder] webView:self
1849                                             createWebViewWithRequest:nil
1850                                                       windowFeatures:features];
1851     [features release];
1852     if (!newWindowWebView)
1853         return nil;
1854
1855     CallUIDelegate(newWindowWebView, @selector(webViewShow:));
1856     return newWindowWebView;
1857 }
1858
1859 - (WebInspector *)inspector
1860 {
1861     if (!_private->inspector)
1862         _private->inspector = [[WebInspector alloc] initWithWebView:self];
1863     return _private->inspector;
1864 }
1865
1866 #if ENABLE(REMOTE_INSPECTOR)
1867 + (void)_enableRemoteInspector
1868 {
1869     RemoteInspector::shared().start();
1870 }
1871
1872 + (void)_disableRemoteInspector
1873 {
1874     RemoteInspector::shared().stop();
1875 }
1876
1877 + (void)_disableAutoStartRemoteInspector
1878 {
1879     RemoteInspector::startDisabled();
1880 }
1881
1882 + (BOOL)_isRemoteInspectorEnabled
1883 {
1884     return RemoteInspector::shared().enabled();
1885 }
1886
1887 + (BOOL)_hasRemoteInspectorSession
1888 {
1889     return RemoteInspector::shared().hasActiveDebugSession();
1890 }
1891
1892 - (BOOL)allowsRemoteInspection
1893 {
1894     return _private->page->remoteInspectionAllowed();
1895 }
1896
1897 - (void)setAllowsRemoteInspection:(BOOL)allow
1898 {
1899     _private->page->setRemoteInspectionAllowed(allow);
1900 }
1901
1902 - (void)setShowingInspectorIndication:(BOOL)showing
1903 {
1904 #if PLATFORM(IOS)
1905     ASSERT(WebThreadIsLocked());
1906
1907     if (showing) {
1908         if (!_private->indicateLayer) {
1909             _private->indicateLayer = [[WebIndicateLayer alloc] initWithWebView:self];
1910             [_private->indicateLayer setNeedsLayout];
1911             [[[self window] hostLayer] addSublayer:_private->indicateLayer];
1912         }
1913     } else {
1914         [_private->indicateLayer removeFromSuperlayer];
1915         [_private->indicateLayer release];
1916         _private->indicateLayer = nil;
1917     }
1918 #else
1919     // Implemented in WebCore::InspectorOverlay.
1920 #endif
1921 }
1922
1923 #if PLATFORM(IOS)
1924 - (void)_setHostApplicationProcessIdentifier:(pid_t)pid auditToken:(audit_token_t)auditToken
1925 {
1926     RetainPtr<CFDataRef> auditData = adoptCF(CFDataCreate(nullptr, (const UInt8*)&auditToken, sizeof(auditToken)));
1927     RemoteInspector::shared().setParentProcessInformation(pid, auditData);
1928 }
1929 #endif // PLATFORM(IOS)
1930 #endif // ENABLE(REMOTE_INSPECTOR)
1931
1932 - (WebCore::Page*)page
1933 {
1934     return _private->page;
1935 }
1936
1937 #if !PLATFORM(IOS)
1938 - (NSMenu *)_menuForElement:(NSDictionary *)element defaultItems:(NSArray *)items
1939 {
1940     NSArray *defaultMenuItems = [[WebDefaultUIDelegate sharedUIDelegate] webView:self contextMenuItemsForElement:element defaultMenuItems:items];
1941     NSArray *menuItems = defaultMenuItems;
1942
1943     // CallUIDelegate returns nil if UIDelegate is nil or doesn't respond to the selector. So we need to check that here
1944     // to distinguish between using defaultMenuItems or the delegate really returning nil to say "no context menu".
1945     SEL selector = @selector(webView:contextMenuItemsForElement:defaultMenuItems:);
1946     if (_private->UIDelegate && [_private->UIDelegate respondsToSelector:selector]) {
1947         menuItems = CallUIDelegate(self, selector, element, defaultMenuItems);
1948         if (!menuItems)
1949             return nil;
1950     }
1951
1952     unsigned count = [menuItems count];
1953     if (!count)
1954         return nil;
1955
1956     NSMenu *menu = [[NSMenu alloc] init];
1957     for (unsigned i = 0; i < count; i++)
1958         [menu addItem:[menuItems objectAtIndex:i]];
1959
1960     return [menu autorelease];
1961 }
1962 #endif
1963
1964 - (void)_mouseDidMoveOverElement:(NSDictionary *)dictionary modifierFlags:(NSUInteger)modifierFlags
1965 {
1966     // We originally intended to call this delegate method sometimes with a nil dictionary, but due to
1967     // a bug dating back to WebKit 1.0 this delegate was never called with nil! Unfortunately we can't
1968     // start calling this with nil since it will break Adobe Help Viewer, and possibly other clients.
1969     if (!dictionary)
1970         return;
1971     CallUIDelegate(self, @selector(webView:mouseDidMoveOverElement:modifierFlags:), dictionary, modifierFlags);
1972 }
1973
1974 - (void)_loadBackForwardListFromOtherView:(WebView *)otherView
1975 {
1976     if (!_private->page)
1977         return;
1978     
1979     if (!otherView->_private->page)
1980         return;
1981     
1982     // It turns out the right combination of behavior is done with the back/forward load
1983     // type.  (See behavior matrix at the top of WebFramePrivate.)  So we copy all the items
1984     // in the back forward list, and go to the current one.
1985
1986     BackForwardClient* backForwardClient = _private->page->backForward().client();
1987     ASSERT(!backForwardClient->currentItem()); // destination list should be empty
1988
1989     BackForwardClient* otherBackForwardClient = otherView->_private->page->backForward().client();
1990     if (!otherBackForwardClient->currentItem())
1991         return; // empty back forward list, bail
1992     
1993     HistoryItem* newItemToGoTo = 0;
1994
1995     int lastItemIndex = otherBackForwardClient->forwardListCount();
1996     for (int i = -otherBackForwardClient->backListCount(); i <= lastItemIndex; ++i) {
1997         if (i == 0) {
1998             // If this item is showing , save away its current scroll and form state,
1999             // since that might have changed since loading and it is normally not saved
2000             // until we leave that page.
2001             otherView->_private->page->mainFrame().loader().history().saveDocumentAndScrollState();
2002         }
2003         RefPtr<HistoryItem> newItem = otherBackForwardClient->itemAtIndex(i)->copy();
2004         if (i == 0) 
2005             newItemToGoTo = newItem.get();
2006         backForwardClient->addItem(newItem.release());
2007     }
2008     
2009     ASSERT(newItemToGoTo);
2010     _private->page->goToItem(newItemToGoTo, FrameLoadTypeIndexedBackForward);
2011 }
2012
2013 - (void)_setFormDelegate: (id<WebFormDelegate>)delegate
2014 {
2015     _private->formDelegate = delegate;
2016 #if PLATFORM(IOS)
2017     [_private->formDelegateForwarder clearTarget];
2018     [_private->formDelegateForwarder release];
2019     _private->formDelegateForwarder = nil;
2020 #endif
2021 }
2022
2023 - (id<WebFormDelegate>)_formDelegate
2024 {
2025     return _private->formDelegate;
2026 }
2027
2028 #if PLATFORM(IOS)
2029 - (id)_formDelegateForwarder
2030 {
2031     if (_private->closing)
2032         return nil;
2033
2034     if (!_private->formDelegateForwarder)
2035         _private->formDelegateForwarder = [[_WebSafeForwarder alloc] initWithTarget:[self _formDelegate] defaultTarget:[WebDefaultFormDelegate sharedFormDelegate]];
2036     return _private->formDelegateForwarder;
2037 }
2038
2039 - (id)_formDelegateForSelector:(SEL)selector
2040 {
2041     id delegate = self->_private->formDelegate;
2042     if ([delegate respondsToSelector:selector])
2043         return delegate;
2044
2045     delegate = [WebDefaultFormDelegate sharedFormDelegate];
2046     if ([delegate respondsToSelector:selector])
2047         return delegate;
2048
2049     return nil;
2050 }
2051 #endif
2052
2053 #if !PLATFORM(IOS)
2054 - (BOOL)_needsAdobeFrameReloadingQuirk
2055 {
2056     static BOOL needsQuirk = WKAppVersionCheckLessThan(@"com.adobe.Acrobat", -1, 9.0)
2057         || WKAppVersionCheckLessThan(@"com.adobe.Acrobat.Pro", -1, 9.0)
2058         || WKAppVersionCheckLessThan(@"com.adobe.Reader", -1, 9.0)
2059         || WKAppVersionCheckLessThan(@"com.adobe.distiller", -1, 9.0)
2060         || WKAppVersionCheckLessThan(@"com.adobe.Contribute", -1, 4.2)
2061         || WKAppVersionCheckLessThan(@"com.adobe.dreamweaver-9.0", -1, 9.1)
2062         || WKAppVersionCheckLessThan(@"com.macromedia.fireworks", -1, 9.1)
2063         || WKAppVersionCheckLessThan(@"com.adobe.InCopy", -1, 5.1)
2064         || WKAppVersionCheckLessThan(@"com.adobe.InDesign", -1, 5.1)
2065         || WKAppVersionCheckLessThan(@"com.adobe.Soundbooth", -1, 2);
2066
2067     return needsQuirk;
2068 }
2069
2070 - (BOOL)_needsLinkElementTextCSSQuirk
2071 {
2072     static BOOL needsQuirk = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITHOUT_LINK_ELEMENT_TEXT_CSS_QUIRK)
2073         && WKAppVersionCheckLessThan(@"com.e-frontier.shade10", -1, 10.6);
2074     return needsQuirk;
2075 }
2076
2077 - (BOOL)_needsIsLoadingInAPISenseQuirk
2078 {
2079     static BOOL needsQuirk = WKAppVersionCheckLessThan(@"com.apple.iAdProducer", -1, 2.1);
2080     
2081     return needsQuirk;
2082 }
2083
2084 - (BOOL)_needsKeyboardEventDisambiguationQuirks
2085 {
2086     static BOOL needsQuirks = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_IE_COMPATIBLE_KEYBOARD_EVENT_DISPATCH) && !applicationIsSafari();
2087     return needsQuirks;
2088 }
2089
2090 - (BOOL)_needsFrameLoadDelegateRetainQuirk
2091 {
2092     static BOOL needsQuirk = WKAppVersionCheckLessThan(@"com.equinux.iSale5", -1, 5.6);    
2093     return needsQuirk;
2094 }
2095
2096 static bool needsSelfRetainWhileLoadingQuirk()
2097 {
2098     static bool needsQuirk = applicationIsAperture();
2099     return needsQuirk;
2100 }
2101 #endif // !PLATFORM(IOS)
2102
2103 - (BOOL)_needsPreHTML5ParserQuirks
2104 {    
2105 #if !PLATFORM(IOS)
2106     // AOL Instant Messenger and Microsoft My Day contain markup incompatible
2107     // with the new HTML5 parser. If these applications were linked against a
2108     // version of WebKit prior to the introduction of the HTML5 parser, enable
2109     // parser quirks to maintain compatibility. For details, see 
2110     // <https://bugs.webkit.org/show_bug.cgi?id=46134> and
2111     // <https://bugs.webkit.org/show_bug.cgi?id=46334>.
2112     static bool isApplicationNeedingParserQuirks = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_HTML5_PARSER)
2113         && (applicationIsAOLInstantMessenger() || applicationIsMicrosoftMyDay());
2114     
2115     // Mail.app must continue to display HTML email that contains quirky markup.
2116     static bool isAppleMail = applicationIsAppleMail();
2117
2118     return isApplicationNeedingParserQuirks
2119         || isAppleMail
2120 #if ENABLE(DASHBOARD_SUPPORT)
2121         // Pre-HTML5 parser quirks are required to remain compatible with many
2122         // Dashboard widgets. See <rdar://problem/8175982>.
2123         || (_private->page && _private->page->settings().usesDashboardBackwardCompatibilityMode())
2124 #endif
2125         || [[self preferences] usePreHTML5ParserQuirks];
2126 #else
2127     static bool isApplicationNeedingParserQuirks = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_HTML5_PARSER) && applicationIsDaijisenDictionary();
2128     return isApplicationNeedingParserQuirks || [[self preferences] usePreHTML5ParserQuirks];
2129 #endif
2130 }
2131
2132 - (BOOL)_needsUnrestrictedGetMatchedCSSRules
2133 {
2134 #if !PLATFORM(IOS)
2135     static bool needsUnrestrictedGetMatchedCSSRules = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_GET_MATCHED_CSS_RULES_RESTRICTIONS) && applicationIsSafari();
2136     return needsUnrestrictedGetMatchedCSSRules;
2137 #else
2138     // FIXME: <rdar://problem/8963684> Implement linked-on-or-after check for needsUnrestrictedGetMatchedCSSRules
2139     return NO;
2140 #endif
2141 }
2142
2143 - (void)_preferencesChangedNotification:(NSNotification *)notification
2144 {
2145 #if PLATFORM(IOS)
2146     // For WebViews that load synchronously, preference changes need to be propagated
2147     // down to WebCore synchronously so that loads in that WebView have the correct
2148     // up-to-date settings.
2149     if (!WebThreadIsLocked())
2150         WebThreadLock();
2151     if ([[self mainFrame] _loadsSynchronously]) {
2152 #endif
2153
2154     WebPreferences *preferences = (WebPreferences *)[notification object];
2155     [self _preferencesChanged:preferences];
2156
2157 #if PLATFORM(IOS)
2158     } else {
2159         WebThreadRun(^{
2160             // It is possible that the prefs object has already changed before the invocation could be called
2161             // on the web thread. This is not possible on TOT which is why they have a simple ASSERT.
2162             WebPreferences *preferences = (WebPreferences *)[notification object];
2163             if (preferences != [self preferences])
2164                 return;
2165             [self _preferencesChanged:preferences];
2166         });
2167     }
2168 #endif
2169 }
2170
2171 - (void)_preferencesChanged:(WebPreferences *)preferences
2172 {    
2173     ASSERT(preferences == [self preferences]);
2174     if (!_private->userAgentOverridden)
2175         _private->userAgent = String();
2176
2177     // Cache this value so we don't have to read NSUserDefaults on each page load
2178     _private->useSiteSpecificSpoofing = [preferences _useSiteSpecificSpoofing];
2179
2180     // Update corresponding WebCore Settings object.
2181     if (!_private->page)
2182         return;
2183
2184 #if PLATFORM(IOS)
2185     // iOS waits to call [WebDatabaseManager sharedWebDatabaseManager] until
2186     // didOneTimeInitialization is true so that we don't initialize databases
2187     // until the first WebView has been created. This is because database
2188     // initialization current requires disk access to populate the origins
2189     // quota map and we want to do this lazily by waiting until WebKit is
2190     // used to display web content in a WebView. The possible cases are:
2191     //   - on one time initialize (the first WebView creation) if databases are enabled (default)
2192     //   - when databases are dynamically enabled later, and they were disabled at startup (this case)
2193     if (didOneTimeInitialization) {
2194         if ([preferences databasesEnabled])
2195             [WebDatabaseManager sharedWebDatabaseManager];
2196         
2197         if ([preferences storageTrackerEnabled])
2198             WebKitInitializeStorageIfNecessary();
2199     }
2200 #endif
2201     
2202     Settings& settings = _private->page->settings();
2203
2204     settings.setCursiveFontFamily([preferences cursiveFontFamily]);
2205     settings.setDefaultFixedFontSize([preferences defaultFixedFontSize]);
2206     settings.setDefaultFontSize([preferences defaultFontSize]);
2207     settings.setDefaultTextEncodingName([preferences defaultTextEncodingName]);
2208     settings.setUsesEncodingDetector([preferences usesEncodingDetector]);
2209     settings.setFantasyFontFamily([preferences fantasyFontFamily]);
2210     settings.setFixedFontFamily([preferences fixedFontFamily]);
2211     settings.setScreenFontSubstitutionEnabled(
2212 #if !PLATFORM(IOS) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
2213         [[NSUserDefaults standardUserDefaults] boolForKey:@"NSFontDefaultScreenFontSubstitutionEnabled"] ||
2214 #endif
2215         [preferences screenFontSubstitutionEnabled]
2216     );
2217     settings.setForceFTPDirectoryListings([preferences _forceFTPDirectoryListings]);
2218     settings.setFTPDirectoryTemplatePath([preferences _ftpDirectoryTemplatePath]);
2219     settings.setLocalStorageDatabasePath([preferences _localStorageDatabasePath]);
2220     settings.setJavaEnabled([preferences isJavaEnabled]);
2221     settings.setScriptEnabled([preferences isJavaScriptEnabled]);
2222     settings.setWebSecurityEnabled([preferences isWebSecurityEnabled]);
2223     settings.setAllowUniversalAccessFromFileURLs([preferences allowUniversalAccessFromFileURLs]);
2224     settings.setAllowFileAccessFromFileURLs([preferences allowFileAccessFromFileURLs]);
2225     settings.setJavaScriptCanOpenWindowsAutomatically([preferences javaScriptCanOpenWindowsAutomatically]);
2226     settings.setMinimumFontSize([preferences minimumFontSize]);
2227     settings.setMinimumLogicalFontSize([preferences minimumLogicalFontSize]);
2228     settings.setPictographFontFamily([preferences pictographFontFamily]);
2229     settings.setPluginsEnabled([preferences arePlugInsEnabled]);
2230     settings.setLocalStorageEnabled([preferences localStorageEnabled]);
2231
2232     _private->page->enableLegacyPrivateBrowsing([preferences privateBrowsingEnabled]);
2233     settings.setSansSerifFontFamily([preferences sansSerifFontFamily]);
2234     settings.setSerifFontFamily([preferences serifFontFamily]);
2235     settings.setStandardFontFamily([preferences standardFontFamily]);
2236     settings.setLoadsImagesAutomatically([preferences loadsImagesAutomatically]);
2237     settings.setLoadsSiteIconsIgnoringImageLoadingSetting([preferences loadsSiteIconsIgnoringImageLoadingPreference]);
2238 #if PLATFORM(IOS)
2239     settings.setShouldPrintBackgrounds(true);
2240 #else
2241     settings.setShouldPrintBackgrounds([preferences shouldPrintBackgrounds]);
2242 #endif
2243     settings.setShrinksStandaloneImagesToFit([preferences shrinksStandaloneImagesToFit]);
2244     settings.setEditableLinkBehavior(core([preferences editableLinkBehavior]));
2245     settings.setTextDirectionSubmenuInclusionBehavior(core([preferences textDirectionSubmenuInclusionBehavior]));
2246     settings.setDOMPasteAllowed([preferences isDOMPasteAllowed]);
2247     settings.setUsesPageCache([self usesPageCache]);
2248     settings.setPageCacheSupportsPlugins([preferences pageCacheSupportsPlugins]);
2249     settings.setBackForwardCacheExpirationInterval([preferences _backForwardCacheExpirationInterval]);
2250
2251     settings.setDeveloperExtrasEnabled([preferences developerExtrasEnabled]);
2252     settings.setJavaScriptExperimentsEnabled([preferences javaScriptExperimentsEnabled]);
2253     settings.setAuthorAndUserStylesEnabled([preferences authorAndUserStylesEnabled]);
2254     settings.setApplicationChromeMode([preferences applicationChromeModeEnabled]);
2255
2256     settings.setNeedsSiteSpecificQuirks(_private->useSiteSpecificSpoofing);
2257     settings.setWebArchiveDebugModeEnabled([preferences webArchiveDebugModeEnabled]);
2258     settings.setLocalFileContentSniffingEnabled([preferences localFileContentSniffingEnabled]);
2259     settings.setOfflineWebApplicationCacheEnabled([preferences offlineWebApplicationCacheEnabled]);
2260     settings.setJavaScriptCanAccessClipboard([preferences javaScriptCanAccessClipboard]);
2261     settings.setXSSAuditorEnabled([preferences isXSSAuditorEnabled]);
2262     settings.setDNSPrefetchingEnabled([preferences isDNSPrefetchingEnabled]);
2263     
2264     // FIXME: Enabling accelerated compositing when WebGL is enabled causes tests to fail on Leopard which expect HW compositing to be disabled.
2265     // Until we fix that, I will comment out the test (CFM)
2266     settings.setAcceleratedCompositingEnabled([preferences acceleratedCompositingEnabled]);
2267     settings.setAcceleratedDrawingEnabled([preferences acceleratedDrawingEnabled]);
2268     settings.setCanvasUsesAcceleratedDrawing([preferences canvasUsesAcceleratedDrawing]);    
2269     settings.setShowDebugBorders([preferences showDebugBorders]);
2270     settings.setShowRepaintCounter([preferences showRepaintCounter]);
2271     settings.setWebGLEnabled([preferences webGLEnabled]);
2272     settings.setSubpixelCSSOMElementMetricsEnabled([preferences subpixelCSSOMElementMetricsEnabled]);
2273
2274     settings.setForceSoftwareWebGLRendering([preferences forceSoftwareWebGLRendering]);
2275     settings.setAccelerated2dCanvasEnabled([preferences accelerated2dCanvasEnabled]);
2276     settings.setLoadDeferringEnabled(shouldEnableLoadDeferring());
2277     settings.setWindowFocusRestricted(shouldRestrictWindowFocus());
2278     settings.setFrameFlatteningEnabled([preferences isFrameFlatteningEnabled]);
2279     settings.setSpatialNavigationEnabled([preferences isSpatialNavigationEnabled]);
2280     settings.setPaginateDuringLayoutEnabled([preferences paginateDuringLayoutEnabled]);
2281     RuntimeEnabledFeatures::sharedFeatures().setCSSRegionsEnabled([preferences cssRegionsEnabled]);
2282     RuntimeEnabledFeatures::sharedFeatures().setCSSCompositingEnabled([preferences cssCompositingEnabled]);
2283
2284     settings.setAsynchronousSpellCheckingEnabled([preferences asynchronousSpellCheckingEnabled]);
2285     settings.setHyperlinkAuditingEnabled([preferences hyperlinkAuditingEnabled]);
2286     settings.setUsePreHTML5ParserQuirks([self _needsPreHTML5ParserQuirks]);
2287     settings.setCrossOriginCheckInGetMatchedCSSRulesDisabled([self _needsUnrestrictedGetMatchedCSSRules]);
2288     settings.setInteractiveFormValidationEnabled([self interactiveFormValidationEnabled]);
2289     settings.setValidationMessageTimerMagnification([self validationMessageTimerMagnification]);
2290
2291     settings.setMediaPlaybackRequiresUserGesture([preferences mediaPlaybackRequiresUserGesture]);
2292     settings.setMediaPlaybackAllowsInline([preferences mediaPlaybackAllowsInline]);
2293     settings.setSuppressesIncrementalRendering([preferences suppressesIncrementalRendering]);
2294     settings.setBackspaceKeyNavigationEnabled([preferences backspaceKeyNavigationEnabled]);
2295     settings.setWantsBalancedSetDefersLoadingBehavior([preferences wantsBalancedSetDefersLoadingBehavior]);
2296     settings.setMockScrollbarsEnabled([preferences mockScrollbarsEnabled]);
2297
2298     settings.setShouldRespectImageOrientation([preferences shouldRespectImageOrientation]);
2299
2300     settings.setRequestAnimationFrameEnabled([preferences requestAnimationFrameEnabled]);
2301     settings.setDiagnosticLoggingEnabled([preferences diagnosticLoggingEnabled]);
2302     settings.setLowPowerVideoAudioBufferSizeEnabled([preferences lowPowerVideoAudioBufferSizeEnabled]);
2303
2304     settings.setUseLegacyTextAlignPositionedElementBehavior([preferences useLegacyTextAlignPositionedElementBehavior]);
2305
2306     settings.setShouldConvertPositionStyleOnCopy([preferences shouldConvertPositionStyleOnCopy]);
2307     settings.setEnableInheritURIQueryComponent([preferences isInheritURIQueryComponentEnabled]);
2308
2309     switch ([preferences storageBlockingPolicy]) {
2310     case WebAllowAllStorage:
2311         settings.setStorageBlockingPolicy(SecurityOrigin::AllowAllStorage);
2312         break;
2313     case WebBlockThirdPartyStorage:
2314         settings.setStorageBlockingPolicy(SecurityOrigin::BlockThirdPartyStorage);
2315         break;
2316     case WebBlockAllStorage:
2317         settings.setStorageBlockingPolicy(SecurityOrigin::BlockAllStorage);
2318         break;
2319     }
2320
2321     settings.setPlugInSnapshottingEnabled([preferences plugInSnapshottingEnabled]);
2322
2323     settings.setFixedPositionCreatesStackingContext(true);
2324
2325 #if PLATFORM(IOS)
2326     settings.setStandalone([preferences _standalone]);
2327     settings.setTelephoneNumberParsingEnabled([preferences _telephoneNumberParsingEnabled]);
2328     settings.setAlwaysUseBaselineOfPrimaryFont([preferences _alwaysUseBaselineOfPrimaryFont]);
2329     settings.setAllowMultiElementImplicitSubmission([preferences _allowMultiElementImplicitFormSubmission]);
2330     settings.setLayoutInterval(std::chrono::milliseconds([preferences _layoutInterval]));
2331     settings.setMaxParseDuration([preferences _maxParseDuration]);
2332     settings.setAlwaysUseAcceleratedOverflowScroll([preferences _alwaysUseAcceleratedOverflowScroll]);
2333     settings.setMediaPlaybackAllowsAirPlay([preferences mediaPlaybackAllowsAirPlay]);
2334     settings.setAudioSessionCategoryOverride([preferences audioSessionCategoryOverride]);
2335     settings.setNetworkDataUsageTrackingEnabled([preferences networkDataUsageTrackingEnabled]);
2336     settings.setNetworkInterfaceName([preferences networkInterfaceName]);
2337     settings.setAVKitEnabled([preferences avKitEnabled]);
2338     settings.setShouldTransformsAffectOverflow(shouldTransformsAffectOverflow());
2339     settings.setShouldDispatchJavaScriptWindowOnErrorEvents(shouldDispatchJavaScriptWindowOnErrorEvents());
2340
2341     settings.setPasswordEchoEnabled([preferences _allowPasswordEcho]);
2342     settings.setPasswordEchoDurationInSeconds([preferences _passwordEchoDuration]);
2343
2344     ASSERT_WITH_MESSAGE(settings.pageCacheSupportsPlugins(), "PageCacheSupportsPlugins should be enabled on iOS.");
2345     settings.setDelegatesPageScaling(true);
2346
2347 #if ENABLE(IOS_TEXT_AUTOSIZING)
2348     settings.setMinimumZoomFontSize([preferences _minimumZoomFontSize]);
2349 #endif
2350 #endif // PLATFORM(IOS)
2351
2352 #if PLATFORM(MAC)
2353     if ([preferences userStyleSheetEnabled]) {
2354         NSString* location = [[preferences userStyleSheetLocation] _web_originalDataAsString];
2355         if ([location isEqualToString:@"apple-dashboard://stylesheet"])
2356             location = @"file:///System/Library/PrivateFrameworks/DashboardClient.framework/Resources/widget.css";
2357         settings.setUserStyleSheetLocation([NSURL URLWithString:(location ? location : @"")]);
2358     } else
2359         settings.setUserStyleSheetLocation([NSURL URLWithString:@""]);
2360
2361     settings.setNeedsAdobeFrameReloadingQuirk([self _needsAdobeFrameReloadingQuirk]);
2362     settings.setTreatsAnyTextCSSLinkAsStylesheet([self _needsLinkElementTextCSSQuirk]);
2363     settings.setNeedsKeyboardEventDisambiguationQuirks([self _needsKeyboardEventDisambiguationQuirks]);
2364     settings.setEnforceCSSMIMETypeInNoQuirksMode(!WKAppVersionCheckLessThan(@"com.apple.iWeb", -1, 2.1));
2365     settings.setNeedsIsLoadingInAPISenseQuirk([self _needsIsLoadingInAPISenseQuirk]);
2366     settings.setTextAreasAreResizable([preferences textAreasAreResizable]);
2367     settings.setExperimentalNotificationsEnabled([preferences experimentalNotificationsEnabled]);
2368     settings.setShowsURLsInToolTips([preferences showsURLsInToolTips]);
2369     settings.setShowsToolTipOverTruncatedText([preferences showsToolTipOverTruncatedText]);
2370     settings.setQTKitEnabled([preferences isQTKitEnabled]);
2371
2372     // FIXME: Should we enable this following <rdar://problem/15290404>?
2373     settings.setMultithreadedWebGLEnabled([preferences multithreadedWebGLEnabled]);
2374 #endif // PLATFORM(MAC)
2375
2376 #if ENABLE(SQL_DATABASE)
2377     DatabaseManager::manager().setIsAvailable([preferences databasesEnabled]);
2378 #endif
2379
2380 #if ENABLE(MEDIA_SOURCE)
2381     settings.setMediaSourceEnabled([preferences mediaSourceEnabled]);
2382 #endif
2383
2384 #if ENABLE(SERVICE_CONTROLS)
2385     settings.setImageControlsEnabled([preferences imageControlsEnabled]);
2386 #endif
2387
2388 #if ENABLE(VIDEO_TRACK)
2389     settings.setShouldDisplaySubtitles([preferences shouldDisplaySubtitles]);
2390     settings.setShouldDisplayCaptions([preferences shouldDisplayCaptions]);
2391     settings.setShouldDisplayTextDescriptions([preferences shouldDisplayTextDescriptions]);
2392 #endif
2393
2394 #if USE(AVFOUNDATION)
2395     settings.setAVFoundationEnabled([preferences isAVFoundationEnabled]);
2396 #endif
2397
2398 #if ENABLE(WEB_AUDIO)
2399     settings.setWebAudioEnabled([preferences webAudioEnabled]);
2400 #endif
2401
2402 #if ENABLE(FULLSCREEN_API)
2403     settings.setFullScreenEnabled([preferences fullScreenEnabled]);
2404 #endif
2405
2406 #if ENABLE(HIDDEN_PAGE_DOM_TIMER_THROTTLING)
2407     settings.setHiddenPageDOMTimerThrottlingEnabled([preferences hiddenPageDOMTimerThrottlingEnabled]);
2408 #endif
2409
2410 #if ENABLE(PAGE_VISIBILITY_API)
2411     settings.setHiddenPageCSSAnimationSuspensionEnabled([preferences hiddenPageCSSAnimationSuspensionEnabled]);
2412 #endif
2413
2414     NSTimeInterval timeout = [preferences incrementalRenderingSuppressionTimeoutInSeconds];
2415     if (timeout > 0)
2416         settings.setIncrementalRenderingSuppressionTimeoutInSeconds(timeout);
2417
2418     // Application Cache Preferences are stored on the global cache storage manager, not in Settings.
2419     [WebApplicationCache setDefaultOriginQuota:[preferences applicationCacheDefaultOriginQuota]];
2420
2421     BOOL zoomsTextOnly = [preferences zoomsTextOnly];
2422     if (_private->zoomsTextOnly != zoomsTextOnly)
2423         [self _setZoomMultiplier:_private->zoomMultiplier isTextOnly:zoomsTextOnly];
2424
2425 #if ENABLE(DISK_IMAGE_CACHE) && PLATFORM(IOS)
2426     DiskImageCache& diskImageCache = WebCore::diskImageCache();
2427     diskImageCache.setEnabled([preferences diskImageCacheEnabled]);
2428     diskImageCache.setMinimumImageSize([preferences diskImageCacheMinimumImageSize]);
2429     diskImageCache.setMaximumCacheSize([preferences diskImageCacheMaximumCacheSize]);
2430 #endif
2431
2432 #if PLATFORM(IOS)
2433     [[self window] setTileBordersVisible:[preferences showDebugBorders]];
2434     [[self window] setTilePaintCountsVisible:[preferences showRepaintCounter]];
2435     [[self window] setAcceleratedDrawingEnabled:[preferences acceleratedDrawingEnabled]];
2436     [WAKView _setInterpolationQuality:[preferences _interpolationQuality]];
2437 #endif
2438 }
2439
2440 static inline IMP getMethod(id o, SEL s)
2441 {
2442     return [o respondsToSelector:s] ? [o methodForSelector:s] : 0;
2443 }
2444
2445 #if PLATFORM(IOS)
2446 - (id)_UIKitDelegateForwarder
2447 {
2448     if (_private->closing)
2449         return nil;
2450         
2451     if (!_private->UIKitDelegateForwarder)
2452         _private->UIKitDelegateForwarder = [[_WebSafeForwarder alloc] initWithTarget:_private->UIKitDelegate defaultTarget:[WebDefaultUIKitDelegate sharedUIKitDelegate]];
2453     return _private->UIKitDelegateForwarder;
2454 }
2455 #endif
2456
2457 - (void)_cacheResourceLoadDelegateImplementations
2458 {
2459     WebResourceDelegateImplementationCache *cache = &_private->resourceLoadDelegateImplementations;
2460     id delegate = _private->resourceProgressDelegate;
2461
2462     if (!delegate) {
2463         bzero(cache, sizeof(WebResourceDelegateImplementationCache));
2464         return;
2465     }
2466
2467     cache->didCancelAuthenticationChallengeFunc = getMethod(delegate, @selector(webView:resource:didCancelAuthenticationChallenge:fromDataSource:));
2468     cache->didFailLoadingWithErrorFromDataSourceFunc = getMethod(delegate, @selector(webView:resource:didFailLoadingWithError:fromDataSource:));
2469     cache->didFinishLoadingFromDataSourceFunc = getMethod(delegate, @selector(webView:resource:didFinishLoadingFromDataSource:));
2470     cache->didLoadResourceFromMemoryCacheFunc = getMethod(delegate, @selector(webView:didLoadResourceFromMemoryCache:response:length:fromDataSource:));
2471     cache->didReceiveAuthenticationChallengeFunc = getMethod(delegate, @selector(webView:resource:didReceiveAuthenticationChallenge:fromDataSource:));
2472 #if USE(PROTECTION_SPACE_AUTH_CALLBACK)
2473     cache->canAuthenticateAgainstProtectionSpaceFunc = getMethod(delegate, @selector(webView:resource:canAuthenticateAgainstProtectionSpace:forDataSource:));
2474 #endif
2475
2476 #if PLATFORM(IOS)
2477     cache->connectionPropertiesFunc = getMethod(delegate, @selector(webView:connectionPropertiesForResource:dataSource:));
2478     cache->webThreadDidFinishLoadingFromDataSourceFunc = getMethod(delegate, @selector(webThreadWebView:resource:didFinishLoadingFromDataSource:));
2479     cache->webThreadDidFailLoadingWithErrorFromDataSourceFunc = getMethod(delegate, @selector(webThreadWebView:resource:didFailLoadingWithError:fromDataSource:));
2480     cache->webThreadIdentifierForRequestFunc = getMethod(delegate, @selector(webThreadWebView:identifierForInitialRequest:fromDataSource:));
2481     cache->webThreadDidLoadResourceFromMemoryCacheFunc = getMethod(delegate, @selector(webThreadWebView:didLoadResourceFromMemoryCache:response:length:fromDataSource:));
2482     cache->webThreadWillSendRequestFunc = getMethod(delegate, @selector(webThreadWebView:resource:willSendRequest:redirectResponse:fromDataSource:));
2483     cache->webThreadDidReceiveResponseFunc = getMethod(delegate, @selector(webThreadWebView:resource:didReceiveResponse:fromDataSource:));
2484     cache->webThreadDidReceiveContentLengthFunc = getMethod(delegate, @selector(webThreadWebView:resource:didReceiveContentLength:fromDataSource:));
2485     cache->webThreadWillCacheResponseFunc = getMethod(delegate, @selector(webThreadWebView:resource:willCacheResponse:fromDataSource:));
2486 #endif
2487
2488     cache->didReceiveContentLengthFunc = getMethod(delegate, @selector(webView:resource:didReceiveContentLength:fromDataSource:));
2489     cache->didReceiveResponseFunc = getMethod(delegate, @selector(webView:resource:didReceiveResponse:fromDataSource:));
2490     cache->identifierForRequestFunc = getMethod(delegate, @selector(webView:identifierForInitialRequest:fromDataSource:));
2491     cache->plugInFailedWithErrorFunc = getMethod(delegate, @selector(webView:plugInFailedWithError:dataSource:));
2492     cache->willCacheResponseFunc = getMethod(delegate, @selector(webView:resource:willCacheResponse:fromDataSource:));
2493     cache->willSendRequestFunc = getMethod(delegate, @selector(webView:resource:willSendRequest:redirectResponse:fromDataSource:));
2494     cache->shouldUseCredentialStorageFunc = getMethod(delegate, @selector(webView:resource:shouldUseCredentialStorageForDataSource:));
2495     cache->shouldPaintBrokenImageForURLFunc = getMethod(delegate, @selector(webView:shouldPaintBrokenImageForURL:));
2496 }
2497
2498 - (void)_cacheFrameLoadDelegateImplementations
2499 {
2500     WebFrameLoadDelegateImplementationCache *cache = &_private->frameLoadDelegateImplementations;
2501     id delegate = _private->frameLoadDelegate;
2502
2503     if (!delegate) {
2504         bzero(cache, sizeof(WebFrameLoadDelegateImplementationCache));
2505         return;
2506     }
2507
2508     cache->didCancelClientRedirectForFrameFunc = getMethod(delegate, @selector(webView:didCancelClientRedirectForFrame:));
2509     cache->didChangeLocationWithinPageForFrameFunc = getMethod(delegate, @selector(webView:didChangeLocationWithinPageForFrame:));
2510     cache->didPushStateWithinPageForFrameFunc = getMethod(delegate, @selector(webView:didPushStateWithinPageForFrame:));
2511     cache->didReplaceStateWithinPageForFrameFunc = getMethod(delegate, @selector(webView:didReplaceStateWithinPageForFrame:));
2512     cache->didPopStateWithinPageForFrameFunc = getMethod(delegate, @selector(webView:didPopStateWithinPageForFrame:));
2513 #if JSC_OBJC_API_ENABLED
2514     cache->didCreateJavaScriptContextForFrameFunc = getMethod(delegate, @selector(webView:didCreateJavaScriptContext:forFrame:));
2515 #endif
2516     cache->didClearWindowObjectForFrameFunc = getMethod(delegate, @selector(webView:didClearWindowObject:forFrame:));
2517     cache->didClearWindowObjectForFrameInScriptWorldFunc = getMethod(delegate, @selector(webView:didClearWindowObjectForFrame:inScriptWorld:));
2518     cache->didClearInspectorWindowObjectForFrameFunc = getMethod(delegate, @selector(webView:didClearInspectorWindowObject:forFrame:));
2519     cache->didCommitLoadForFrameFunc = getMethod(delegate, @selector(webView:didCommitLoadForFrame:));
2520     cache->didFailLoadWithErrorForFrameFunc = getMethod(delegate, @selector(webView:didFailLoadWithError:forFrame:));
2521     cache->didFailProvisionalLoadWithErrorForFrameFunc = getMethod(delegate, @selector(webView:didFailProvisionalLoadWithError:forFrame:));
2522     cache->didFinishDocumentLoadForFrameFunc = getMethod(delegate, @selector(webView:didFinishDocumentLoadForFrame:));
2523     cache->didFinishLoadForFrameFunc = getMethod(delegate, @selector(webView:didFinishLoadForFrame:));
2524     cache->didFirstLayoutInFrameFunc = getMethod(delegate, @selector(webView:didFirstLayoutInFrame:));
2525     cache->didFirstVisuallyNonEmptyLayoutInFrameFunc = getMethod(delegate, @selector(webView:didFirstVisuallyNonEmptyLayoutInFrame:));
2526     cache->didLayoutFunc = getMethod(delegate, @selector(webView:didLayout:));
2527     cache->didHandleOnloadEventsForFrameFunc = getMethod(delegate, @selector(webView:didHandleOnloadEventsForFrame:));
2528 #if ENABLE(ICONDATABASE)
2529     cache->didReceiveIconForFrameFunc = getMethod(delegate, @selector(webView:didReceiveIcon:forFrame:));
2530 #endif
2531     cache->didReceiveServerRedirectForProvisionalLoadForFrameFunc = getMethod(delegate, @selector(webView:didReceiveServerRedirectForProvisionalLoadForFrame:));
2532     cache->didReceiveTitleForFrameFunc = getMethod(delegate, @selector(webView:didReceiveTitle:forFrame:));
2533     cache->didStartProvisionalLoadForFrameFunc = getMethod(delegate, @selector(webView:didStartProvisionalLoadForFrame:));
2534     cache->willCloseFrameFunc = getMethod(delegate, @selector(webView:willCloseFrame:));
2535     cache->willPerformClientRedirectToURLDelayFireDateForFrameFunc = getMethod(delegate, @selector(webView:willPerformClientRedirectToURL:delay:fireDate:forFrame:));
2536     cache->windowScriptObjectAvailableFunc = getMethod(delegate, @selector(webView:windowScriptObjectAvailable:));
2537     cache->didDisplayInsecureContentFunc = getMethod(delegate, @selector(webViewDidDisplayInsecureContent:));
2538     cache->didRunInsecureContentFunc = getMethod(delegate, @selector(webView:didRunInsecureContent:));
2539     cache->didDetectXSSFunc = getMethod(delegate, @selector(webView:didDetectXSS:));
2540     cache->didRemoveFrameFromHierarchyFunc = getMethod(delegate, @selector(webView:didRemoveFrameFromHierarchy:));
2541 #if PLATFORM(IOS)
2542     cache->webThreadDidLayoutFunc = getMethod(delegate, @selector(webThreadWebView:didLayout:));
2543 #endif
2544
2545     // It would be nice to get rid of this code and transition all clients to using didLayout instead of
2546     // didFirstLayoutInFrame and didFirstVisuallyNonEmptyLayoutInFrame. In the meantime, this is required
2547     // for backwards compatibility.
2548     Page* page = core(self);
2549     if (page) {
2550         unsigned milestones = DidFirstLayout;
2551 #if PLATFORM(IOS)
2552         milestones |= DidFirstVisuallyNonEmptyLayout;
2553 #else
2554         if (cache->didFirstVisuallyNonEmptyLayoutInFrameFunc)
2555             milestones |= DidFirstVisuallyNonEmptyLayout;
2556 #endif
2557         page->addLayoutMilestones(static_cast<LayoutMilestones>(milestones));
2558     }
2559 }
2560
2561 - (void)_cacheScriptDebugDelegateImplementations
2562 {
2563     WebScriptDebugDelegateImplementationCache *cache = &_private->scriptDebugDelegateImplementations;
2564     id delegate = _private->scriptDebugDelegate;
2565
2566     if (!delegate) {
2567         bzero(cache, sizeof(WebScriptDebugDelegateImplementationCache));
2568         return;
2569     }
2570
2571     cache->didParseSourceFunc = getMethod(delegate, @selector(webView:didParseSource:baseLineNumber:fromURL:sourceId:forWebFrame:));
2572     if (cache->didParseSourceFunc)
2573         cache->didParseSourceExpectsBaseLineNumber = YES;
2574     else {
2575         cache->didParseSourceExpectsBaseLineNumber = NO;
2576         cache->didParseSourceFunc = getMethod(delegate, @selector(webView:didParseSource:fromURL:sourceId:forWebFrame:));
2577     }
2578
2579     cache->failedToParseSourceFunc = getMethod(delegate, @selector(webView:failedToParseSource:baseLineNumber:fromURL:withError:forWebFrame:));
2580
2581     cache->exceptionWasRaisedFunc = getMethod(delegate, @selector(webView:exceptionWasRaised:hasHandler:sourceId:line:forWebFrame:));
2582     if (cache->exceptionWasRaisedFunc)
2583         cache->exceptionWasRaisedExpectsHasHandlerFlag = YES;
2584     else {
2585         cache->exceptionWasRaisedExpectsHasHandlerFlag = NO;
2586         cache->exceptionWasRaisedFunc = getMethod(delegate, @selector(webView:exceptionWasRaised:sourceId:line:forWebFrame:));
2587     }
2588 }
2589
2590 - (void)_cacheHistoryDelegateImplementations
2591 {
2592     WebHistoryDelegateImplementationCache *cache = &_private->historyDelegateImplementations;
2593     id delegate = _private->historyDelegate;
2594
2595     if (!delegate) {
2596         bzero(cache, sizeof(WebHistoryDelegateImplementationCache));
2597         return;
2598     }
2599
2600     cache->navigatedFunc = getMethod(delegate, @selector(webView:didNavigateWithNavigationData:inFrame:));
2601     cache->clientRedirectFunc = getMethod(delegate, @selector(webView:didPerformClientRedirectFromURL:toURL:inFrame:));
2602     cache->serverRedirectFunc = getMethod(delegate, @selector(webView:didPerformServerRedirectFromURL:toURL:inFrame:));
2603     cache->deprecatedSetTitleFunc = getMethod(delegate, @selector(webView:updateHistoryTitle:forURL:));
2604     cache->setTitleFunc = getMethod(delegate, @selector(webView:updateHistoryTitle:forURL:inFrame:));
2605     cache->populateVisitedLinksFunc = getMethod(delegate, @selector(populateVisitedLinksForWebView:));
2606 }
2607
2608 - (id)_policyDelegateForwarder
2609 {
2610 #if PLATFORM(IOS)
2611     if (_private->closing)
2612         return nil;
2613 #endif
2614     if (!_private->policyDelegateForwarder)
2615         _private->policyDelegateForwarder = [[_WebSafeForwarder alloc] initWithTarget:_private->policyDelegate defaultTarget:[WebDefaultPolicyDelegate sharedPolicyDelegate]];
2616     return _private->policyDelegateForwarder;
2617 }
2618
2619 - (id)_UIDelegateForwarder
2620 {
2621 #if PLATFORM(IOS)
2622     if (_private->closing)
2623         return nil;
2624 #endif
2625     if (!_private->UIDelegateForwarder)
2626         _private->UIDelegateForwarder = [[_WebSafeForwarder alloc] initWithTarget:_private->UIDelegate defaultTarget:[WebDefaultUIDelegate sharedUIDelegate]];
2627     return _private->UIDelegateForwarder;
2628 }
2629
2630 #if PLATFORM(IOS)
2631 - (id)_UIDelegateForSelector:(SEL)selector
2632 {
2633     id delegate = self->_private->UIDelegate;
2634     if ([delegate respondsToSelector:selector])
2635         return delegate;
2636
2637     delegate = [WebDefaultUIDelegate sharedUIDelegate];
2638     if ([delegate respondsToSelector:selector])
2639         return delegate;
2640
2641     return nil;
2642 }
2643 #endif
2644
2645 - (id)_editingDelegateForwarder
2646 {
2647 #if PLATFORM(IOS)
2648     if (_private->closing)
2649         return nil;
2650 #endif    
2651     // This can be called during window deallocation by QTMovieView in the QuickTime Cocoa Plug-in.
2652     // Not sure if that is a bug or not.
2653     if (!_private)
2654         return nil;
2655
2656     if (!_private->editingDelegateForwarder)
2657         _private->editingDelegateForwarder = [[_WebSafeForwarder alloc] initWithTarget:_private->editingDelegate defaultTarget:[WebDefaultEditingDelegate sharedEditingDelegate]];
2658     return _private->editingDelegateForwarder;
2659 }
2660
2661 - (void)_closeWindow
2662 {
2663     [[self _UIDelegateForwarder] webViewClose:self];
2664 }
2665
2666 + (void)_unregisterViewClassAndRepresentationClassForMIMEType:(NSString *)MIMEType
2667 {
2668     [[WebFrameView _viewTypesAllowImageTypeOmission:NO] removeObjectForKey:MIMEType];
2669     [[WebDataSource _repTypesAllowImageTypeOmission:NO] removeObjectForKey:MIMEType];
2670     
2671     // FIXME: We also need to maintain MIMEType registrations (which can be dynamically changed)
2672     // in the WebCore MIMEType registry.  For now we're doing this in a safe, limited manner
2673     // to fix <rdar://problem/5372989> - a future revamping of the entire system is neccesary for future robustness
2674     MIMETypeRegistry::getSupportedNonImageMIMETypes().remove(MIMEType);
2675 }
2676
2677 + (void)_registerViewClass:(Class)viewClass representationClass:(Class)representationClass forURLScheme:(NSString *)URLScheme
2678 {
2679     NSString *MIMEType = [self _generatedMIMETypeForURLScheme:URLScheme];
2680     [self registerViewClass:viewClass representationClass:representationClass forMIMEType:MIMEType];
2681
2682     // FIXME: We also need to maintain MIMEType registrations (which can be dynamically changed)
2683     // in the WebCore MIMEType registry.  For now we're doing this in a safe, limited manner
2684     // to fix <rdar://problem/5372989> - a future revamping of the entire system is neccesary for future robustness
2685     if ([viewClass class] == [WebHTMLView class])
2686         MIMETypeRegistry::getSupportedNonImageMIMETypes().add(MIMEType);
2687     
2688     // This is used to make _representationExistsForURLScheme faster.
2689     // Without this set, we'd have to create the MIME type each time.
2690     if (schemesWithRepresentationsSet == nil) {
2691         schemesWithRepresentationsSet = [[NSMutableSet alloc] init];
2692     }
2693     [schemesWithRepresentationsSet addObject:[[[URLScheme lowercaseString] copy] autorelease]];
2694 }
2695
2696 + (NSString *)_generatedMIMETypeForURLScheme:(NSString *)URLScheme
2697 {
2698     return [@"x-apple-web-kit/" stringByAppendingString:[URLScheme lowercaseString]];
2699 }
2700
2701 + (BOOL)_representationExistsForURLScheme:(NSString *)URLScheme
2702 {
2703     return [schemesWithRepresentationsSet containsObject:[URLScheme lowercaseString]];
2704 }
2705
2706 + (BOOL)_canHandleRequest:(NSURLRequest *)request forMainFrame:(BOOL)forMainFrame
2707 {
2708     // FIXME: If <rdar://problem/5217309> gets fixed, this check can be removed.
2709     if (!request)
2710         return NO;
2711
2712     if ([NSURLConnection canHandleRequest:request])
2713         return YES;
2714
2715     NSString *scheme = [[request URL] scheme];
2716
2717     // Representations for URL schemes work at the top level.
2718     if (forMainFrame && [self _representationExistsForURLScheme:scheme])
2719         return YES;
2720
2721     if ([scheme _webkit_isCaseInsensitiveEqualToString:@"applewebdata"])
2722         return YES;
2723
2724     if ([scheme _webkit_isCaseInsensitiveEqualToString:@"blob"])
2725         return YES;
2726
2727     return NO;
2728 }
2729
2730 + (BOOL)_canHandleRequest:(NSURLRequest *)request
2731 {
2732     return [self _canHandleRequest:request forMainFrame:YES];
2733 }
2734
2735 + (NSString *)_decodeData:(NSData *)data
2736 {
2737     HTMLNames::init(); // this method is used for importing bookmarks at startup, so HTMLNames are likely to be uninitialized yet
2738     return TextResourceDecoder::create("text/html")->decodeAndFlush(static_cast<const char*>([data bytes]), [data length]); // bookmark files are HTML
2739 }
2740
2741 - (void)_pushPerformingProgrammaticFocus
2742 {
2743     _private->programmaticFocusCount++;
2744 }
2745
2746 - (void)_popPerformingProgrammaticFocus
2747 {
2748     _private->programmaticFocusCount--;
2749 }
2750
2751 - (BOOL)_isPerformingProgrammaticFocus
2752 {
2753     return _private->programmaticFocusCount != 0;
2754 }
2755
2756 #if !PLATFORM(IOS)
2757 - (void)_didChangeValueForKey: (NSString *)key
2758 {
2759     LOG (Bindings, "calling didChangeValueForKey: %@", key);
2760     [self didChangeValueForKey: key];
2761 }
2762
2763 - (void)_willChangeValueForKey: (NSString *)key
2764 {
2765     LOG (Bindings, "calling willChangeValueForKey: %@", key);
2766     [self willChangeValueForKey: key];
2767 }
2768
2769 + (BOOL)automaticallyNotifiesObserversForKey:(NSString *)key {
2770     static NSSet *manualNotifyKeys = nil;
2771     if (!manualNotifyKeys)
2772         manualNotifyKeys = [[NSSet alloc] initWithObjects:_WebMainFrameURLKey, _WebIsLoadingKey, _WebEstimatedProgressKey,
2773             _WebCanGoBackKey, _WebCanGoForwardKey, _WebMainFrameTitleKey, _WebMainFrameIconKey, _WebMainFrameDocumentKey,
2774             nil];
2775     if ([manualNotifyKeys containsObject:key])
2776         return NO;
2777     return YES;
2778 }
2779
2780 - (NSArray *)_declaredKeys {
2781     static NSArray *declaredKeys = nil;
2782     if (!declaredKeys)
2783         declaredKeys = [[NSArray alloc] initWithObjects:_WebMainFrameURLKey, _WebIsLoadingKey, _WebEstimatedProgressKey,
2784             _WebCanGoBackKey, _WebCanGoForwardKey, _WebMainFrameTitleKey, _WebMainFrameIconKey, _WebMainFrameDocumentKey, nil];
2785     return declaredKeys;
2786 }
2787
2788 - (void)setObservationInfo:(void *)info
2789 {
2790     _private->observationInfo = info;
2791 }
2792
2793 - (void *)observationInfo
2794 {
2795     return _private->observationInfo;
2796 }
2797
2798 - (void)_willChangeBackForwardKeys
2799 {
2800     [self _willChangeValueForKey: _WebCanGoBackKey];
2801     [self _willChangeValueForKey: _WebCanGoForwardKey];
2802 }
2803
2804 - (void)_didChangeBackForwardKeys
2805 {
2806     [self _didChangeValueForKey: _WebCanGoBackKey];
2807     [self _didChangeValueForKey: _WebCanGoForwardKey];
2808 }
2809
2810 - (void)_didStartProvisionalLoadForFrame:(WebFrame *)frame
2811 {
2812     if (needsSelfRetainWhileLoadingQuirk())
2813         [self retain];
2814
2815     [self _willChangeBackForwardKeys];
2816     if (frame == [self mainFrame]){
2817         // Force an observer update by sending a will/did.
2818         [self _willChangeValueForKey: _WebIsLoadingKey];
2819         [self _didChangeValueForKey: _WebIsLoadingKey];
2820
2821         [self _willChangeValueForKey: _WebMainFrameURLKey];
2822     }
2823
2824     [NSApp setWindowsNeedUpdate:YES];
2825
2826 #if ENABLE(FULLSCREEN_API)
2827     Document* document = core([frame DOMDocument]);
2828     if (Element* element = document ? document->webkitCurrentFullScreenElement() : 0) {
2829         SEL selector = @selector(webView:closeFullScreenWithListener:);
2830         if (_private->UIDelegate && [_private->UIDelegate respondsToSelector:selector]) {
2831             WebKitFullScreenListener *listener = [[WebKitFullScreenListener alloc] initWithElement:element];
2832             CallUIDelegate(self, selector, listener);
2833             [listener release];
2834         } else if (_private->newFullscreenController && [_private->newFullscreenController isFullScreen]) {
2835             [_private->newFullscreenController close];
2836         }
2837     }
2838 #endif
2839 }
2840
2841 - (void)_checkDidPerformFirstNavigation
2842 {
2843     if (_private->_didPerformFirstNavigation)
2844         return;
2845
2846     Page* page = _private->page;
2847     if (!page)
2848         return;
2849
2850     auto& backForwardController = page->backForward();
2851
2852     if (!backForwardController.backItem())
2853         return;
2854
2855     _private->_didPerformFirstNavigation = YES;
2856
2857     if (_private->preferences.automaticallyDetectsCacheModel && _private->preferences.cacheModel < WebCacheModelDocumentBrowser)
2858         _private->preferences.cacheModel = WebCacheModelDocumentBrowser;
2859 }
2860
2861 - (void)_didCommitLoadForFrame:(WebFrame *)frame
2862 {
2863     if (frame == [self mainFrame])
2864         [self _didChangeValueForKey: _WebMainFrameURLKey];
2865
2866     [self _checkDidPerformFirstNavigation];
2867
2868     [NSApp setWindowsNeedUpdate:YES];
2869 }
2870
2871 - (void)_didFinishLoadForFrame:(WebFrame *)frame
2872 {
2873     if (needsSelfRetainWhileLoadingQuirk())
2874         [self performSelector:@selector(release) withObject:nil afterDelay:0];
2875         
2876     [self _didChangeBackForwardKeys];
2877     if (frame == [self mainFrame]){
2878         // Force an observer update by sending a will/did.
2879         [self _willChangeValueForKey: _WebIsLoadingKey];
2880         [self _didChangeValueForKey: _WebIsLoadingKey];
2881     }
2882     [NSApp setWindowsNeedUpdate:YES];
2883 }
2884
2885 - (void)_didFailLoadWithError:(NSError *)error forFrame:(WebFrame *)frame
2886 {
2887     if (needsSelfRetainWhileLoadingQuirk())
2888         [self performSelector:@selector(release) withObject:nil afterDelay:0];
2889
2890     [self _didChangeBackForwardKeys];
2891     if (frame == [self mainFrame]){
2892         // Force an observer update by sending a will/did.
2893         [self _willChangeValueForKey: _WebIsLoadingKey];
2894         [self _didChangeValueForKey: _WebIsLoadingKey];
2895     }
2896     [NSApp setWindowsNeedUpdate:YES];
2897 }
2898
2899 - (void)_didFailProvisionalLoadWithError:(NSError *)error forFrame:(WebFrame *)frame
2900 {
2901     if (needsSelfRetainWhileLoadingQuirk())
2902         [self performSelector:@selector(release) withObject:nil afterDelay:0];
2903
2904     [self _didChangeBackForwardKeys];
2905     if (frame == [self mainFrame]){
2906         // Force an observer update by sending a will/did.
2907         [self _willChangeValueForKey: _WebIsLoadingKey];
2908         [self _didChangeValueForKey: _WebIsLoadingKey];
2909         
2910         [self _didChangeValueForKey: _WebMainFrameURLKey];
2911     }
2912     [NSApp setWindowsNeedUpdate:YES];
2913 }
2914
2915 - (NSCachedURLResponse *)_cachedResponseForURL:(NSURL *)URL
2916 {
2917     RetainPtr<NSMutableURLRequest *> request = adoptNS([[NSMutableURLRequest alloc] initWithURL:URL]);
2918     [request _web_setHTTPUserAgent:[self userAgentForURL:URL]];
2919     NSCachedURLResponse *cachedResponse;
2920
2921     if (!_private->page)
2922         return nil;
2923
2924     if (CFURLStorageSessionRef storageSession = _private->page->mainFrame().loader().networkingContext()->storageSession().platformSession())
2925         cachedResponse = WKCachedResponseForRequest(storageSession, request.get());
2926     else
2927         cachedResponse = [[NSURLCache sharedURLCache] cachedResponseForRequest:request.get()];
2928
2929     return cachedResponse;
2930 }
2931
2932 - (void)_writeImageForElement:(NSDictionary *)element withPasteboardTypes:(NSArray *)types toPasteboard:(NSPasteboard *)pasteboard
2933 {
2934     NSURL *linkURL = [element objectForKey:WebElementLinkURLKey];
2935     DOMElement *domElement = [element objectForKey:WebElementDOMNodeKey];
2936     [pasteboard _web_writeImage:(NSImage *)(domElement ? nil : [element objectForKey:WebElementImageKey])
2937                         element:domElement
2938                             URL:linkURL ? linkURL : (NSURL *)[element objectForKey:WebElementImageURLKey]
2939                           title:[element objectForKey:WebElementImageAltStringKey] 
2940                         archive:[[element objectForKey:WebElementDOMNodeKey] webArchive]
2941                           types:types
2942                          source:nil];
2943 }
2944
2945 - (void)_writeLinkElement:(NSDictionary *)element withPasteboardTypes:(NSArray *)types toPasteboard:(NSPasteboard *)pasteboard
2946 {
2947     [pasteboard _web_writeURL:[element objectForKey:WebElementLinkURLKey]
2948                      andTitle:[element objectForKey:WebElementLinkLabelKey]
2949                         types:types];
2950 }
2951
2952 #if ENABLE(DRAG_SUPPORT)
2953 - (void)_setInitiatedDrag:(BOOL)initiatedDrag
2954 {
2955     if (!_private->page)
2956         return;
2957     _private->page->dragController().setDidInitiateDrag(initiatedDrag);
2958 }
2959 #endif
2960
2961 #else
2962
2963 - (void)_didCommitLoadForFrame:(WebFrame *)frame
2964 {
2965     if (frame == [self mainFrame])
2966         _private->didDrawTiles = 0;
2967 }
2968
2969 #endif // PLATFORM(IOS)
2970
2971 #if ENABLE(DASHBOARD_SUPPORT)
2972
2973 #define DASHBOARD_CONTROL_LABEL @"control"
2974
2975 - (void)_addControlRect:(NSRect)bounds clip:(NSRect)clip fromView:(NSView *)view toDashboardRegions:(NSMutableDictionary *)regions
2976 {
2977     NSRect adjustedBounds = bounds;
2978     adjustedBounds.origin = [self convertPoint:bounds.origin fromView:view];
2979     adjustedBounds.origin.y = [self bounds].size.height - adjustedBounds.origin.y;
2980     adjustedBounds.size = bounds.size;
2981
2982     NSRect adjustedClip;
2983     adjustedClip.origin = [self convertPoint:clip.origin fromView:view];
2984     adjustedClip.origin.y = [self bounds].size.height - adjustedClip.origin.y;
2985     adjustedClip.size = clip.size;
2986
2987     WebDashboardRegion *region = [[WebDashboardRegion alloc] initWithRect:adjustedBounds 
2988         clip:adjustedClip type:WebDashboardRegionTypeScrollerRectangle];
2989     NSMutableArray *scrollerRegions = [regions objectForKey:DASHBOARD_CONTROL_LABEL];
2990     if (!scrollerRegions) {
2991         scrollerRegions = [[NSMutableArray alloc] init];
2992         [regions setObject:scrollerRegions forKey:DASHBOARD_CONTROL_LABEL];
2993         [scrollerRegions release];
2994     }
2995     [scrollerRegions addObject:region];
2996     [region release];
2997 }
2998
2999 - (void)_addScrollerDashboardRegionsForFrameView:(FrameView*)frameView dashboardRegions:(NSMutableDictionary *)regions
3000 {    
3001     NSView *documentView = [[kit(&frameView->frame()) frameView] documentView];
3002
3003     for (const auto& widget: frameView->children()) {
3004         if (widget->isFrameView()) {
3005             [self _addScrollerDashboardRegionsForFrameView:toFrameView(widget.get()) dashboardRegions:regions];
3006             continue;
3007         }
3008
3009         if (!widget->isScrollbar())
3010             continue;
3011
3012         // FIXME: This should really pass an appropriate clip, but our first try got it wrong, and
3013         // it's not common to need this to be correct in Dashboard widgets.
3014         NSRect bounds = widget->frameRect();
3015         [self _addControlRect:bounds clip:bounds fromView:documentView toDashboardRegions:regions];
3016     }
3017 }
3018
3019 - (void)_addScrollerDashboardRegions:(NSMutableDictionary *)regions from:(NSArray *)views
3020 {
3021     // Add scroller regions for NSScroller and WebCore scrollbars
3022     NSUInteger count = [views count];
3023     for (NSUInteger i = 0; i < count; i++) {
3024         NSView *view = [views objectAtIndex:i];
3025         
3026         if ([view isKindOfClass:[WebHTMLView class]]) {
3027             if (Frame* coreFrame = core([(WebHTMLView*)view _frame])) {
3028                 if (FrameView* coreView = coreFrame->view())
3029                     [self _addScrollerDashboardRegionsForFrameView:coreView dashboardRegions:regions];
3030             }
3031         } else if ([view isKindOfClass:[NSScroller class]]) {
3032             // AppKit places absent scrollers at -100,-100
3033             if ([view frame].origin.y < 0)
3034                 continue;
3035             [self _addControlRect:[view bounds] clip:[view visibleRect] fromView:view toDashboardRegions:regions];
3036         }
3037         [self _addScrollerDashboardRegions:regions from:[view subviews]];
3038     }
3039 }
3040
3041 - (void)_addScrollerDashboardRegions:(NSMutableDictionary *)regions
3042 {
3043     [self _addScrollerDashboardRegions:regions from:[self subviews]];
3044 }
3045
3046 - (NSDictionary *)_dashboardRegions
3047 {
3048     // Only return regions from main frame.
3049     Frame* mainFrame = [self _mainCoreFrame];
3050     if (!mainFrame)
3051         return nil;
3052
3053     const Vector<AnnotatedRegionValue>& regions = mainFrame->document()->annotatedRegions();
3054     size_t size = regions.size();
3055
3056     NSMutableDictionary *webRegions = [NSMutableDictionary dictionaryWithCapacity:size];
3057     for (size_t i = 0; i < size; i++) {
3058         const AnnotatedRegionValue& region = regions[i];
3059
3060         if (region.type == StyleDashboardRegion::None)
3061             continue;
3062
3063         NSString *label = region.label;
3064         WebDashboardRegionType type = WebDashboardRegionTypeNone;
3065         if (region.type == StyleDashboardRegion::Circle)
3066             type = WebDashboardRegionTypeCircle;
3067         else if (region.type == StyleDashboardRegion::Rectangle)
3068             type = WebDashboardRegionTypeRectangle;
3069         NSMutableArray *regionValues = [webRegions objectForKey:label];
3070         if (!regionValues) {
3071             regionValues = [[NSMutableArray alloc] initWithCapacity:1];
3072             [webRegions setObject:regionValues forKey:label];
3073             [regionValues release];
3074         }
3075
3076         WebDashboardRegion *webRegion = [[WebDashboardRegion alloc] initWithRect:pixelSnappedIntRect(region.bounds) clip:pixelSnappedIntRect(region.clip) type:type];
3077         [regionValues addObject:webRegion];
3078         [webRegion release];
3079     }
3080
3081     [self _addScrollerDashboardRegions:webRegions];
3082
3083     return webRegions;
3084 }
3085
3086 - (void)_setDashboardBehavior:(WebDashboardBehavior)behavior to:(BOOL)flag
3087 {
3088     // FIXME: Remove this blanket assignment once Dashboard and Dashcode implement 
3089     // specific support for the backward compatibility mode flag.
3090     if (behavior == WebDashboardBehaviorAllowWheelScrolling && flag == NO && _private->page)
3091         _private->page->settings().setUsesDashboardBackwardCompatibilityMode(true);
3092     
3093     switch (behavior) {
3094         case WebDashboardBehaviorAlwaysSendMouseEventsToAllWindows: {
3095             _private->dashboardBehaviorAlwaysSendMouseEventsToAllWindows = flag;
3096             break;
3097         }
3098         case WebDashboardBehaviorAlwaysSendActiveNullEventsToPlugIns: {
3099             _private->dashboardBehaviorAlwaysSendActiveNullEventsToPlugIns = flag;
3100             break;
3101         }
3102         case WebDashboardBehaviorAlwaysAcceptsFirstMouse: {
3103             _private->dashboardBehaviorAlwaysAcceptsFirstMouse = flag;
3104             break;
3105         }
3106         case WebDashboardBehaviorAllowWheelScrolling: {
3107             _private->dashboardBehaviorAllowWheelScrolling = flag;
3108             break;
3109         }
3110         case WebDashboardBehaviorUseBackwardCompatibilityMode: {
3111             if (_private->page)
3112                 _private->page->settings().setUsesDashboardBackwardCompatibilityMode(flag);
3113 #if ENABLE(LEGACY_CSS_VENDOR_PREFIXES)
3114             RuntimeEnabledFeatures::sharedFeatures().setLegacyCSSVendorPrefixesEnabled(flag);
3115 #endif
3116             break;
3117         }
3118     }
3119
3120     // Pre-HTML5 parser quirks should be enabled if Dashboard is in backward
3121     // compatibility mode. See <rdar://problem/8175982>.
3122     if (_private->page)
3123         _private->page->settings().setUsePreHTML5ParserQuirks([self _needsPreHTML5ParserQuirks]);
3124 }
3125
3126 - (BOOL)_dashboardBehavior:(WebDashboardBehavior)behavior
3127 {
3128     switch (behavior) {
3129         case WebDashboardBehaviorAlwaysSendMouseEventsToAllWindows: {
3130             return _private->dashboardBehaviorAlwaysSendMouseEventsToAllWindows;
3131         }
3132         case WebDashboardBehaviorAlwaysSendActiveNullEventsToPlugIns: {
3133             return _private->dashboardBehaviorAlwaysSendActiveNullEventsToPlugIns;
3134         }
3135         case WebDashboardBehaviorAlwaysAcceptsFirstMouse: {
3136             return _private->dashboardBehaviorAlwaysAcceptsFirstMouse;
3137         }
3138         case WebDashboardBehaviorAllowWheelScrolling: {
3139             return _private->dashboardBehaviorAllowWheelScrolling;
3140         }
3141         case WebDashboardBehaviorUseBackwardCompatibilityMode: {
3142             return _private->page && _private->page->settings().usesDashboardBackwardCompatibilityMode();
3143         }
3144     }
3145     return NO;
3146 }
3147
3148 #endif /* ENABLE(DASHBOARD_SUPPORT) */
3149
3150 + (void)_setShouldUseFontSmoothing:(BOOL)f
3151 {
3152     Font::setShouldUseSmoothing(f);
3153 }
3154
3155 + (BOOL)_shouldUseFontSmoothing
3156 {
3157     return Font::shouldUseSmoothing();
3158 }
3159
3160 #if !PLATFORM(IOS)
3161 + (void)_setUsesTestModeFocusRingColor:(BOOL)f
3162 {
3163     setUsesTestModeFocusRingColor(f);
3164 }
3165
3166 + (BOOL)_usesTestModeFocusRingColor
3167 {
3168     return usesTestModeFocusRingColor();
3169 }
3170 #endif
3171
3172 #if PLATFORM(IOS)
3173 - (void)_setUIKitDelegate:(id)delegate
3174 {
3175     _private->UIKitDelegate = delegate;
3176     [_private->UIKitDelegateForwarder clearTarget];
3177     [_private->UIKitDelegateForwarder release];
3178     _private->UIKitDelegateForwarder = nil;
3179 }
3180
3181 - (id)_UIKitDelegate
3182 {
3183     return _private->UIKitDelegate;
3184 }
3185
3186 - (void)setWebMailDelegate:(id)delegate
3187 {
3188     _private->WebMailDelegate = delegate;
3189 }
3190
3191 - (id)_webMailDelegate
3192 {
3193     return _private->WebMailDelegate;
3194 }
3195
3196 - (id <WebCaretChangeListener>)caretChangeListener
3197 {
3198     return _private->_caretChangeListener;
3199 }
3200
3201 - (void)setCaretChangeListener:(id <WebCaretChangeListener>)listener
3202 {
3203     _private->_caretChangeListener = listener;
3204 }
3205
3206 - (NSSet *)caretChangeListeners
3207 {
3208     return _private->_caretChangeListeners;
3209 }
3210
3211 - (void)addCaretChangeListener:(id <WebCaretChangeListener>)listener
3212 {
3213     if (_private->_caretChangeListeners == nil) {
3214         _private->_caretChangeListeners = [[NSMutableSet alloc] init];
3215     }
3216     
3217     [_private->_caretChangeListeners addObject:listener];
3218 }
3219
3220 - (void)removeCaretChangeListener:(id <WebCaretChangeListener>)listener
3221 {
3222     [_private->_caretChangeListeners removeObject:listener];
3223 }
3224
3225 - (void)removeAllCaretChangeListeners
3226 {
3227     [_private->_caretChangeListeners removeAllObjects];
3228 }
3229
3230 - (void)caretChanged
3231 {
3232     [_private->_caretChangeListener caretChanged];
3233     NSSet *copy = [_private->_caretChangeListeners copy];
3234     for (id <WebCaretChangeListener> listener in copy) {
3235         [listener caretChanged];
3236     }
3237     [copy release];
3238 }
3239
3240 - (void)_clearDelegates
3241 {
3242     ASSERT(WebThreadIsLocked() || !WebThreadIsEnabled());
3243     
3244     [self _setFormDelegate:nil];
3245     [self _setUIKitDelegate:nil];
3246     [self setCaretChangeListener:nil];
3247     [self removeAllCaretChangeListeners];
3248     [self setWebMailDelegate:nil];
3249     
3250     [self setDownloadDelegate:nil];
3251     [self setEditingDelegate:nil]; 
3252     [self setFrameLoadDelegate:nil];
3253     [self setPolicyDelegate:nil];
3254     [self setResourceLoadDelegate:nil];
3255     [self setScriptDebugDelegate:nil];
3256     [self setUIDelegate:nil];     
3257 }
3258
3259 - (NSURL *)_displayURL
3260 {
3261     WebThreadLock();
3262     WebFrame *frame = [self mainFrame];
3263     // FIXME: <rdar://problem/6362369> We used to get provisionalDataSource here if in provisional state; how do we tell that now? Is this right?
3264     WebDataSource *dataSource = [frame provisionalDataSource];
3265     if (!dataSource)
3266         dataSource = [frame dataSource];
3267     NSURL *unreachableURL = [dataSource unreachableURL];
3268     NSURL *URL = unreachableURL != nil ? unreachableURL : [[dataSource request] URL];
3269     [[URL retain] autorelease];
3270     return URL;
3271 }
3272 #endif // PLATFORM(IOS)
3273
3274 #if !PLATFORM(IOS)
3275 - (void)setAlwaysShowVerticalScroller:(BOOL)flag
3276 {
3277     WebDynamicScrollBarsView *scrollview = [[[self mainFrame] frameView] _scrollView];
3278     if (flag) {
3279         [scrollview setVerticalScrollingMode:ScrollbarAlwaysOn andLock:YES];
3280     } else {
3281         [scrollview setVerticalScrollingModeLocked:NO];
3282         [scrollview setVerticalScrollingMode:ScrollbarAuto andLock:NO];
3283     }
3284 }
3285
3286 - (BOOL)alwaysShowVerticalScroller
3287 {
3288     WebDynamicScrollBarsView *scrollview = [[[self mainFrame] frameView] _scrollView];
3289     return [scrollview verticalScrollingModeLocked] && [scrollview verticalScrollingMode] == ScrollbarAlwaysOn;
3290 }
3291
3292 - (void)setAlwaysShowHorizontalScroller:(BOOL)flag
3293 {
3294     WebDynamicScrollBarsView *scrollview = [[[self mainFrame] frameView] _scrollView];
3295     if (flag) {
3296         [scrollview setHorizontalScrollingMode:ScrollbarAlwaysOn andLock:YES];
3297     } else {
3298         [scrollview setHorizontalScrollingModeLocked:NO];
3299         [scrollview setHorizontalScrollingMode:ScrollbarAuto andLock:NO];
3300     }
3301 }
3302
3303 - (void)setProhibitsMainFrameScrolling:(BOOL)prohibits
3304 {
3305     if (Frame* mainFrame = [self _mainCoreFrame])
3306         mainFrame->view()->setProhibitsScrolling(prohibits);
3307 }
3308
3309 - (BOOL)alwaysShowHorizontalScroller
3310 {
3311     WebDynamicScrollBarsView *scrollview = [[[self mainFrame] frameView] _scrollView];
3312     return [scrollview horizontalScrollingModeLocked] && [scrollview horizontalScrollingMode] == ScrollbarAlwaysOn;
3313 }
3314 #endif // !PLATFORM(IOS)
3315
3316 - (void)_setUseFastImageScalingMode:(BOOL)flag
3317 {
3318     if (_private->page && _private->page->inLowQualityImageInterpolationMode() != flag) {
3319         _private->page->setInLowQualityImageInterpolationMode(flag);
3320         [self setNeedsDisplay:YES];
3321     }
3322 }
3323
3324 - (BOOL)_inFastImageScalingMode
3325 {
3326     if (_private->page)
3327         return _private->page->inLowQualityImageInterpolationMode();
3328     return NO;
3329 }
3330
3331 - (BOOL)_cookieEnabled
3332 {
3333     if (_private->page)
3334         return _private->page->settings().cookieEnabled();
3335     return YES;
3336 }
3337
3338 - (void)_setCookieEnabled:(BOOL)enable
3339 {
3340     if (_private->page)
3341         _private->page->settings().setCookieEnabled(enable);
3342 }
3343
3344 #if !PLATFORM(IOS)
3345 - (void)_setAdditionalWebPlugInPaths:(NSArray *)newPaths
3346 {
3347     if (!_private->pluginDatabase)
3348         _private->pluginDatabase = [[WebPluginDatabase alloc] init];
3349         
3350     [_private->pluginDatabase setPlugInPaths:newPaths];
3351     [_private->pluginDatabase refresh];
3352 }
3353 #endif
3354
3355 #if PLATFORM(IOS)
3356 - (BOOL)_locked_plugInsAreRunningInFrame:(WebFrame *)frame
3357 {
3358     // Ask plug-ins in this frame
3359     id <WebDocumentView> documentView = [[frame frameView] documentView];
3360     if (documentView && [documentView isKindOfClass:[WebHTMLView class]]) {
3361         if ([[(WebHTMLView *)documentView _pluginController] plugInsAreRunning])
3362             return YES;
3363     }
3364
3365     // Ask plug-ins in child frames
3366     NSArray *childFrames = [frame childFrames];
3367     unsigned childCount = [childFrames count];
3368     unsigned childIndex;
3369     for (childIndex = 0; childIndex < childCount; childIndex++) {
3370         if ([self _locked_plugInsAreRunningInFrame:[childFrames objectAtIndex:childIndex]])
3371             return YES;
3372     }
3373     
3374     return NO;
3375 }
3376
3377 - (BOOL)_pluginsAreRunning
3378 {
3379     WebThreadLock();
3380     return [self _locked_plugInsAreRunningInFrame:[self mainFrame]];
3381 }
3382
3383 - (void)_locked_recursivelyPerformPlugInSelector:(SEL)selector inFrame:(WebFrame *)frame
3384 {
3385     // Send the message to plug-ins in this frame
3386     id <WebDocumentView> documentView = [[frame frameView] documentView];
3387     if (documentView && [documentView isKindOfClass:[WebHTMLView class]])
3388         [[(WebHTMLView *)documentView _pluginController] performSelector:selector];
3389
3390     // Send the message to plug-ins in child frames
3391     NSArray *childFrames = [frame childFrames];
3392     unsigned childCount = [childFrames count];
3393     unsigned childIndex;
3394     for (childIndex = 0; childIndex < childCount; childIndex++) {
3395         [self _locked_recursivelyPerformPlugInSelector:selector inFrame:[childFrames objectAtIndex:childIndex]];
3396     }
3397 }
3398
3399 - (void)_destroyAllPlugIns
3400 {
3401     WebThreadLock();
3402     [self _locked_recursivelyPerformPlugInSelector:@selector(destroyAllPlugins) inFrame:[self mainFrame]];
3403 }
3404
3405 - (void)_clearBackForwardCache
3406 {
3407     WebThreadRun(^{
3408         WebKit::MemoryMeasure measurer("[WebView _clearBackForwardCache]");
3409         BackForwardList* bfList = core([self backForwardList]);
3410         if (!bfList)
3411             return;
3412
3413         BOOL didClearBFCache = bfList->clearAllPageCaches();
3414         if (WebKit::MemoryMeasure::isLoggingEnabled())
3415             NSLog(@"[WebView _clearBackForwardCache] %@ empty cache\n", (didClearBFCache ? @"DID" : @"did NOT"));
3416     });
3417 }
3418
3419 - (void)_startAllPlugIns
3420 {
3421     WebThreadLock();
3422     [self _locked_recursivelyPerformPlugInSelector:@selector(startAllPlugins) inFrame:[self mainFrame]];
3423 }
3424
3425 - (void)_stopAllPlugIns
3426 {
3427     WebThreadLock();
3428     [self _locked_recursivelyPerformPlugInSelector:@selector(stopAllPlugins) inFrame:[self mainFrame]];
3429 }
3430
3431 - (void)_stopAllPlugInsForPageCache
3432 {
3433     WebThreadLock();
3434     [self _locked_recursivelyPerformPlugInSelector:@selector(stopPluginsForPageCache) inFrame:[self mainFrame]];
3435 }
3436
3437 - (void)_restorePlugInsFromCache
3438 {
3439     WebThreadLock();
3440     [self _locked_recursivelyPerformPlugInSelector:@selector(restorePluginsFromCache) inFrame:[self mainFrame]];
3441 }
3442
3443 - (BOOL)_setMediaLayer:(CALayer*)layer forPluginView:(NSView*)pluginView
3444 {
3445     WebThreadLock();
3446
3447     Frame* mainCoreFrame = [self _mainCoreFrame];
3448     for (Frame* frame = mainCoreFrame; frame; frame = frame->tree().traverseNext()) {
3449         FrameView* coreView = frame ? frame->view() : 0;
3450         if (!coreView)
3451             continue;
3452
3453         // Get the GraphicsLayer for this widget.
3454         GraphicsLayer* layerForWidget = coreView->graphicsLayerForPlatformWidget(pluginView);
3455         if (!layerForWidget)
3456             continue;
3457         
3458         if (layerForWidget->contentsLayerForMedia() != layer) {
3459             layerForWidget->setContentsToMedia(layer);
3460             // We need to make sure the layer hierachy change is applied immediately.
3461             if (mainCoreFrame->view())
3462                 mainCoreFrame->view()->flushCompositingStateIncludingSubframes();
3463             return YES;
3464         }
3465     }
3466
3467     return NO;
3468 }
3469
3470 - (void)_setNeedsUnrestrictedGetMatchedCSSRules:(BOOL)flag
3471 {
3472     if (_private->page)
3473         _private->page->settings().setCrossOriginCheckInGetMatchedCSSRulesDisabled(flag);
3474 }
3475 #endif // PLATFORM(IOS)
3476
3477 - (void)_attachScriptDebuggerToAllFrames
3478 {
3479     for (Frame* frame = [self _mainCoreFrame]; frame; frame = frame->tree().traverseNext())
3480         [kit(frame) _attachScriptDebugger];
3481 }
3482
3483 - (void)_detachScriptDebuggerFromAllFrames
3484 {
3485     for (Frame* frame = [self _mainCoreFrame]; frame; frame = frame->tree().traverseNext())
3486         [kit(frame) _detachScriptDebugger];
3487 }
3488
3489 #if !PLATFORM(IOS)
3490 - (void)setBackgroundColor:(NSColor *)backgroundColor
3491 {
3492     if ([_private->backgroundColor isEqual:backgroundColor])
3493         return;
3494
3495     id old = _private->backgroundColor;
3496     _private->backgroundColor = [backgroundColor retain];
3497     [old release];
3498
3499     [[self mainFrame] _updateBackgroundAndUpdatesWhileOffscreen];
3500 }
3501
3502 - (NSColor *)backgroundColor
3503 {
3504     return _private->backgroundColor;
3505 }
3506 #else
3507 - (void)setBackgroundColor:(CGColorRef)backgroundColor
3508 {
3509    if (!backgroundColor || CFEqual(_private->backgroundColor, backgroundColor))
3510         return;
3511
3512     CFTypeRef old = _private->backgroundColor;
3513     CFRetain(backgroundColor);
3514     _private->backgroundColor = backgroundColor;
3515     CFRelease(old);
3516
3517     [[self mainFrame] _updateBackgroundAndUpdatesWhileOffscreen];
3518 }
3519
3520 - (CGColorRef)backgroundColor
3521 {
3522     return _private->backgroundColor;
3523 }
3524 #endif
3525
3526 - (BOOL)defersCallbacks
3527 {
3528     if (!_private->page)
3529         return NO;
3530     return _private->page->defersLoading();
3531 }
3532
3533 - (void)setDefersCallbacks:(BOOL)defer
3534 {
3535     if (!_private->page)
3536         return;
3537     return _private->page->setDefersLoading(defer);
3538 }
3539
3540 #if TARGET_OS_IPHONE && USE(QUICK_LOOK)
3541 - (NSDictionary *)quickLookContentForURL:(NSURL *)url
3542 {
3543     NSString *uti = qlPreviewConverterUTIForURL(url);
3544     if (!uti)
3545         return nil;
3546
3547     NSString *fileName = qlPreviewConverterFileNameForURL(url);
3548     if (!fileName)
3549         return nil;
3550
3551     return [NSDictionary dictionaryWithObjectsAndKeys: fileName, WebQuickLookFileNameKey, uti, WebQuickLookUTIKey, nil];
3552 }
3553 #endif
3554
3555 #if PLATFORM(IOS)
3556 - (BOOL)_isStopping
3557 {
3558     return _private->isStopping;
3559 }
3560
3561 - (BOOL)_isClosing
3562 {
3563     return _private->closing;
3564 }
3565
3566 + (NSArray *)_productivityDocumentMIMETypes
3567 {
3568 #if USE(QUICK_LOOK)
3569     return [QLPreviewGetSupportedMIMETypesSet() allObjects];
3570 #else
3571     return nil;
3572 #endif
3573 }
3574
3575 - (void)_setAllowsMessaging:(BOOL)aFlag
3576 {
3577     _private->allowsMessaging = aFlag;
3578 }
3579
3580 - (BOOL)_allowsMessaging
3581 {
3582     return _private->allowsMessaging;
3583 }
3584
3585 - (void)_setFixedLayoutSize:(CGSize)size
3586 {
3587     ASSERT(WebThreadIsLocked());
3588     _private->fixedLayoutSize = size;
3589     if (Frame* mainFrame = core([self mainFrame])) {
3590         IntSize newSize(size);
3591         mainFrame->view()->setFixedLayoutSize(newSize);
3592         mainFrame->view()->setUseFixedLayout(!newSize.isEmpty());
3593         [self setNeedsDisplay:YES];
3594     }
3595 }
3596
3597 - (CGSize)_fixedLayoutSize
3598 {
3599     return _private->fixedLayoutSize;
3600 }
3601
3602 - (void)_synchronizeCustomFixedPositionLayoutRect
3603 {
3604     ASSERT(WebThreadIsLocked());
3605
3606     IntRect newRect;
3607     {
3608         MutexLocker locker(_private->pendingFixedPositionLayoutRectMutex);
3609         if (CGRectIsNull(_private->pendingFixedPositionLayoutRect))
3610             return;
3611         newRect = enclosingIntRect(_private->pendingFixedPositionLayoutRect);
3612         _private->pendingFixedPositionLayoutRect = CGRectNull;
3613     }
3614
3615     if (Frame* mainFrame = core([self mainFrame]))
3616         mainFrame->view()->setCustomFixedPositionLayoutRect(newRect);
3617 }
3618
3619 - (void)_setCustomFixedPositionLayoutRectInWebThread:(CGRect)rect synchronize:(BOOL)synchronize
3620 {
3621     {
3622         MutexLocker locker(_private->pendingFixedPositionLayoutRectMutex);
3623         _private->pendingFixedPositionLayoutRect = rect;
3624     }
3625     if (!synchronize)
3626         return;
3627     WebThreadRun(^{
3628         [self _synchronizeCustomFixedPositionLayoutRect];
3629     });
3630 }
3631
3632 - (void)_setCustomFixedPositionLayoutRect:(CGRect)rect
3633 {
3634     ASSERT(WebThreadIsLocked());
3635     {
3636         MutexLocker locker(_private->pendingFixedPositionLayoutRectMutex);
3637         _private->pendingFixedPositionLayoutRect = rect;
3638     }
3639     [self _synchronizeCustomFixedPositionLayoutRect];
3640 }
3641
3642 - (BOOL)_fetchCustomFixedPositionLayoutRect:(NSRect*)rect
3643 {
3644     MutexLocker locker(_private->pendingFixedPositionLayoutRectMutex);
3645     if (CGRectIsNull(_private->pendingFixedPositionLayoutRect))
3646         return false;
3647
3648     *rect = _private->pendingFixedPositionLayoutRect;
3649     _private->pendingFixedPositionLayoutRect = CGRectNull;
3650     return true;
3651 }
3652
3653 - (void)_viewGeometryDidChange
3654 {
3655     ASSERT(WebThreadIsLocked());
3656     
3657     if (Frame* coreFrame = [self _mainCoreFrame])
3658         coreFrame->viewportOffsetChanged(Frame::IncrementalScrollOffset);
3659 }
3660
3661 - (void)_overflowScrollPositionChangedTo:(CGPoint)offset forNode:(DOMNode *)domNode isUserScroll:(BOOL)userScroll
3662 {
3663     // Find the frame
3664     Node* node = core(domNode);
3665     Frame* frame = node->document().frame();
3666     if (!frame)
3667         return;
3668
3669     frame->overflowScrollPositionChangedForNode(roundedIntPoint(offset), node, userScroll);
3670 }
3671
3672 + (void)_doNotStartObservingNetworkReachability
3673 {
3674     Settings::setShouldOptOutOfNetworkStateObservation(true);
3675 }
3676 #endif // PLATFORM(IOS)
3677
3678 #if ENABLE(TOUCH_EVENTS)
3679 - (NSArray *)_touchEventRegions
3680 {
3681     Frame* frame = [self _mainCoreFrame];
3682     if (!frame)
3683         return nil;
3684     
3685     Document* document = frame->document();
3686     if (!document)
3687         return nil;
3688
3689     Vector<IntRect> rects;
3690     document->getTouchRects(rects);
3691
3692     if (rects.size() == 0)
3693         return nil;
3694
3695     NSMutableArray *eventRegionArray = [[[NSMutableArray alloc] initWithCapacity:rects.size()] autorelease];
3696
3697     Vector<IntRect>::const_iterator end = rects.end();
3698     for (Vector<IntRect>::const_iterator it = rects.begin(); it != end; ++it) {
3699         const IntRect& rect = *it;
3700         if (rect.isEmpty())
3701             continue;
3702
3703         // The event region wants this points in this order:
3704         //  p2------p3
3705         //  |       |
3706         //  p1------p4
3707         //
3708         WebEventRegion *eventRegion = [[WebEventRegion alloc] initWithPoints:FloatPoint(rect.x(), rect.maxY())
3709                                                                             :FloatPoint(rect.x(), rect.y())
3710                                                                             :FloatPoint(rect.maxX(), rect.y())
3711                                                                             :FloatPoint(rect.maxX(), rect.maxY())];
3712         if (eventRegion) {
3713             [eventRegionArray addObject:eventRegion];
3714             [eventRegion release];
3715         }
3716     }
3717
3718     return eventRegionArray;
3719 }
3720 #endif // ENABLE(TOUCH_EVENTS)
3721
3722 // For backwards compatibility with the WebBackForwardList API, we honor both
3723 // a per-WebView and a per-preferences setting for whether to use the page cache.
3724
3725 - (BOOL)usesPageCache
3726 {
3727     return _private->usesPageCache && [[self preferences] usesPageCache];
3728 }
3729
3730 - (void)setUsesPageCache:(BOOL)usesPageCache
3731 {
3732     _private->usesPageCache = usesPageCache;
3733
3734     // Update our own settings and post the public notification only
3735     [self _preferencesChanged:[self preferences]];
3736     [[self preferences] _postPreferencesChangedAPINotification];
3737 }
3738
3739 - (WebHistoryItem *)_globalHistoryItem
3740 {
3741     if (!_private)
3742         return nil;
3743
3744     return kit(_private->_globalHistoryItem.get());
3745 }
3746
3747 - (void)_setGlobalHistoryItem:(HistoryItem*)historyItem
3748 {
3749     _private->_globalHistoryItem = historyItem;
3750 }
3751
3752 - (WebTextIterator *)textIteratorForRect:(NSRect)rect
3753 {
3754     IntPoint rectStart(rect.origin.x, rect.origin.y);
3755     IntPoint rectEnd(rect.origin.x + rect.size.width, rect.origin.y + rect.size.height);
3756     
3757     Frame* coreFrame = [self _mainCoreFrame];
3758     if (!coreFrame)
3759         return nil;
3760     
3761     VisibleSelection selectionInsideRect(coreFrame->visiblePositionForPoint(rectStart), coreFrame->visiblePositionForPoint(rectEnd));
3762     
3763     return [[[WebTextIterator alloc] initWithRange:kit(selectionInsideRect.toNormalizedRange().get())] autorelease];
3764 }
3765
3766 #if ENABLE(DASHBOARD_SUPPORT)
3767 - (void)handleAuthenticationForResource:(id)identifier challenge:(NSURLAuthenticationChallenge *)challenge fromDataSource:(WebDataSource *)dataSource 
3768 {
3769     NSWindow *window = [self hostWindow] ? [self hostWindow] : [self window]; 
3770     [[WebPanelAuthenticationHandler sharedHandler] startAuthentication:challenge window:window]; 
3771
3772 #endif
3773
3774 #if !PLATFORM(IOS)
3775 - (void)_clearUndoRedoOperations
3776 {
3777     if (!_private->page)
3778         return;
3779     _private->page->clearUndoRedoOperations();
3780 }
3781 #endif
3782
3783 - (void)_executeCoreCommandByName:(NSString *)name value:(NSString *)value
3784 {
3785     Frame* coreFrame = [self _mainCoreFrame];
3786     if (!coreFrame)
3787         return;
3788     coreFrame->editor().command(name).execute(value);
3789 }
3790
3791 - (void)_clearMainFrameName
3792 {
3793     _private->page->mainFrame().tree().clearName();
3794 }
3795
3796 - (void)setSelectTrailingWhitespaceEnabled:(BOOL)flag
3797 {
3798     if (_private->page->settings().selectTrailingWhitespaceEnabled() != flag) {
3799         _private->page->settings().setSelectTrailingWhitespaceEnabled(flag);
3800         [self setSmartInsertDeleteEnabled:!flag];
3801     }
3802 }
3803
3804 - (BOOL)isSelectTrailingWhitespaceEnabled
3805 {
3806     return _private->page->settings().selectTrailingWhitespaceEnabled();
3807 }
3808
3809 - (void)setMemoryCacheDelegateCallsEnabled:(BOOL)enabled
3810 {
3811     _private->page->setMemoryCacheClientCallsEnabled(enabled);
3812 }
3813
3814 - (BOOL)areMemoryCacheDelegateCallsEnabled
3815 {
3816     return _private->page->areMemoryCacheClientCallsEnabled();
3817 }
3818
3819 #if !PLATFORM(IOS)
3820 + (NSCursor *)_pointingHandCursor
3821 {
3822     return handCursor().platformCursor();
3823 }
3824 #endif
3825
3826 - (BOOL)_postsAcceleratedCompositingNotifications
3827 {
3828     return _private->postsAcceleratedCompositingNotifications;
3829 }
3830 - (void)_setPostsAcceleratedCompositingNotifications:(BOOL)flag
3831 {
3832     _private->postsAcceleratedCompositingNotifications = flag;
3833 }
3834
3835 - (BOOL)_isUsingAcceleratedCompositing
3836 {
3837     Frame* coreFrame = [self _mainCoreFrame];
3838     for (Frame* frame = coreFrame; frame; frame = frame->tree().traverseNext(coreFrame)) {
3839         NSView *documentView = [[kit(frame) frameView] documentView];
3840         if ([documentView isKindOfClass:[WebHTMLView class]] && [(WebHTMLView *)documentView _isUsingAcceleratedCompositing])
3841             return YES;
3842     }
3843
3844     return NO;
3845 }
3846
3847 - (void)_setBaseCTM:(CGAffineTransform)transform forContext:(CGContextRef)context
3848 {
3849     WKSetBaseCTM(context, transform);
3850 }
3851
3852 - (BOOL)interactiveFormValidationEnabled
3853 {
3854     return _private->interactiveFormValidationEnabled;
3855 }
3856
3857 - (void)setInteractiveFormValidationEnabled:(BOOL)enabled
3858 {
3859     _private->interactiveFormValidationEnabled = enabled;
3860 }
3861
3862 - (int)validationMessageTimerMagnification
3863 {
3864     return _private->validationMessageTimerMagnification;
3865 }
3866
3867 - (void)setValidationMessageTimerMagnification:(int)newValue
3868 {
3869     _private->validationMessageTimerMagnification = newValue;
3870 }
3871
3872 - (BOOL)_isSoftwareRenderable
3873 {
3874     Frame* coreFrame = [self _mainCoreFrame];
3875     for (Frame* frame = coreFrame; frame; frame = frame->tree().traverseNext(coreFrame)) {
3876         if (FrameView* view = frame->view()) {
3877             if (!view->isSoftwareRenderable())
3878                 return NO;
3879         }
3880     }
3881
3882     return YES;
3883 }
3884
3885 - (void)_setIncludesFlattenedCompositingLayersWhenDrawingToBitmap:(BOOL)flag
3886 {
3887     _private->includesFlattenedCompositingLayersWhenDrawingToBitmap = flag;
3888 }
3889
3890 - (BOOL)_includesFlattenedCompositingLayersWhenDrawingToBitmap
3891 {
3892     return _private->includesFlattenedCompositingLayersWhenDrawingToBitmap;
3893 }
3894
3895 - (void)setTracksRepaints:(BOOL)flag
3896 {
3897     Frame* coreFrame = [self _mainCoreFrame];
3898     if (FrameView* view = coreFrame->view())
3899         view->setTracksRepaints(flag);
3900 }
3901
3902 - (BOOL)isTrackingRepaints
3903 {
3904     Frame* coreFrame = [self _mainCoreFrame];
3905     if (FrameView* view = coreFrame->view())
3906         return view->isTrackingRepaints();
3907     
3908     return NO;
3909 }
3910
3911 - (void)resetTrackedRepaints
3912 {
3913     Frame* coreFrame = [self _mainCoreFrame];
3914     if (FrameView* view = coreFrame->view())
3915         view->resetTrackedRepaints();
3916 }
3917
3918 - (NSArray*)trackedRepaintRects
3919 {
3920     Frame* coreFrame = [self _mainCoreFrame];
3921     FrameView* view = coreFrame->view();
3922     if (!view || !view->isTrackingRepaints())
3923         return nil;
3924
3925     const Vector<FloatRect>& repaintRects = view->trackedRepaintRects();
3926     NSMutableArray* rectsArray = [[NSMutableArray alloc] initWithCapacity:repaintRects.size()];
3927     
3928     for (unsigned i = 0; i < repaintRects.size(); ++i)
3929         [rectsArray addObject:[NSValue valueWithRect:pixelSnappedIntRect(LayoutRect(repaintRects[i]))]];
3930
3931     return [rectsArray autorelease];
3932 }
3933
3934 #if !PLATFORM(IOS)
3935 - (NSPasteboard *)_insertionPasteboard
3936 {
3937     return _private ? _private->insertionPasteboard : nil;
3938 }
3939 #endif
3940
3941 + (void)_addOriginAccessWhitelistEntryWithSourceOrigin:(NSString *)sourceOrigin destinationProtocol:(NSString *)destinationProtocol destinationHost:(NSString *)destinationHost allowDestinationSubdomains:(BOOL)allowDestinationSubdomains
3942 {
3943     SecurityPolicy::addOriginAccessWhitelistEntry(*SecurityOrigin::createFromString(sourceOrigin), destinationProtocol, destinationHost, allowDestinationSubdomains);
3944 }
3945
3946 + (void)_removeOriginAccessWhitelistEntryWithSourceOrigin:(NSString *)sourceOrigin destinationProtocol:(NSString *)destinationProtocol destinationHost:(NSString *)destinationHost allowDestinationSubdomains:(BOOL)allowDestinationSubdomains
3947 {
3948     SecurityPolicy::removeOriginAccessWhitelistEntry(*SecurityOrigin::createFromString(sourceOrigin), destinationProtocol, destinationHost, allowDestinationSubdomains);
3949 }
3950
3951 + (void)_resetOriginAccessWhitelists
3952 {
3953     SecurityPolicy::resetOriginAccessWhitelists();
3954 }
3955
3956 - (BOOL)_isViewVisible
3957 {
3958     if (![self window])
3959         return false;
3960
3961     if (![[self window] isVisible])
3962         return false;
3963
3964     if ([self isHiddenOrHasHiddenAncestor])
3965         return false;
3966
3967     return true;
3968 }
3969
3970 - (void)_updateVisibilityState
3971 {
3972     if (_private && _private->page)
3973         [self _setIsVisible:[self _isViewVisible]];
3974 }
3975
3976 - (void)_updateActiveState
3977 {
3978     if (_private && _private->page)
3979 #if PLATFORM(IOS)
3980         _private->page->focusController().setActive([[self window] isKeyWindow]);
3981 #else
3982         _private->page->focusController().setActive([[self window] _hasKeyAppearance]);
3983 #endif
3984 }
3985
3986 static Vector<String> toStringVector(NSArray* patterns)
3987 {
3988     Vector<String> patternsVector;
3989
3990     NSUInteger count = [patterns count];
3991     if (!count)
3992         return patternsVector;
3993
3994     for (NSUInteger i = 0; i < count; ++i) {
3995         id entry = [patterns objectAtIndex:i];
3996         if ([entry isKindOfClass:[NSString class]])
3997             patternsVector.append(String((NSString *)entry));
3998     }
3999     return patternsVector;
4000 }
4001
4002 + (void)_addUserScriptToGroup:(NSString *)groupName world:(WebScriptWorld *)world source:(NSString *)source url:(NSURL *)url
4003                     whitelist:(NSArray *)whitelist blacklist:(NSArray *)blacklist
4004                 injectionTime:(WebUserScriptInjectionTime)injectionTime
4005 {
4006     [WebView _addUserScriptToGroup:groupName world:world source:source url:url whitelist:whitelist blacklist:blacklist injectionTime:injectionTime injectedFrames:WebInjectInAllFrames];
4007 }
4008
4009 + (void)_addUserScriptToGroup:(NSString *)groupName world:(WebScriptWorld *)world source:(NSString *)source url:(NSURL *)url
4010                     whitelist:(NSArray *)whitelist blacklist:(NSArray *)blacklist
4011                 injectionTime:(WebUserScriptInjectionTime)injectionTime
4012                injectedFrames:(WebUserContentInjectedFrames)injectedFrames
4013 {
4014     String group(groupName);
4015     if (group.isEmpty())
4016         return;
4017     
4018     PageGroup* pageGroup = PageGroup::pageGroup(group);
4019     if (!pageGroup)
4020         return;
4021
4022     if (!world)
4023         return;
4024
4025     pageGroup->addUserScriptToWorld(*core(world), source, url, toStringVector(whitelist), toStringVector(blacklist),
4026                                     injectionTime == WebInjectAtDocumentStart ? InjectAtDocumentStart : InjectAtDocumentEnd,
4027                                     injectedFrames == WebInjectInAllFrames ? InjectInAllFrames : InjectInTopFrameOnly);
4028 }
4029
4030 + (void)_addUserStyleSheetToGroup:(NSString *)groupName world:(WebScriptWorld *)world source:(NSString *)source url:(NSURL *)url
4031                         whitelist:(NSArray *)whitelist blacklist:(NSArray *)blacklist
4032 {
4033     [WebView _addUserStyleSheetToGroup:groupName world:world source:source url:url whitelist:whitelist blacklist:blacklist injectedFrames:WebInjectInAllFrames];
4034 }
4035
4036 + (void)_addUserStyleSheetToGroup:(NSString *)groupName world:(WebScriptWorld *)world source:(NSString *)source url:(NSURL *)url
4037                         whitelist:(NSArray *)whitelist blacklist:(NSArray *)blacklist
4038                    injectedFrames:(WebUserContentInjectedFrames)injectedFrames
4039 {
4040     String group(groupName);
4041     if (group.isEmpty())
4042         return;
4043     
4044     PageGroup* pageGroup = PageGroup::pageGroup(group);
4045     if (!pageGroup)
4046         return;
4047
4048     if (!world)
4049         return;
4050
4051     pageGroup->addUserStyleSheetToWorld(*core(world), source, url, toStringVector(whitelist), toStringVector(blacklist), injectedFrames == WebInjectInAllFrames ? InjectInAllFrames : InjectInTopFrameOnly);
4052 }
4053
4054 + (void)_removeUserScriptFromGroup:(NSString *)groupName world:(WebScriptWorld *)world url:(NSURL *)url
4055 {
4056     String group(groupName);
4057     if (group.isEmpty())
4058         return;
4059     
4060     PageGroup* pageGroup = PageGroup::pageGroup(group);
4061     if (!pageGroup)
4062         return;
4063
4064     if (!world)
4065         return;
4066
4067     pageGroup->removeUserScriptFromWorld(*core(world), url);
4068 }
4069
4070 + (void)_removeUserStyleSheetFromGroup:(NSString *)groupName world:(WebScriptWorld *)world url:(NSURL *)url
4071 {
4072     String group(groupName);
4073     if (group.isEmpty())
4074         return;
4075     
4076     PageGroup* pageGroup = PageGroup::pageGroup(group);
4077     if (!pageGroup)
4078         return;
4079
4080     if (!world)
4081         return;
4082
4083     pageGroup->removeUserStyleSheetFromWorld(*core(world), url);
4084 }
4085
4086 + (void)_removeUserScriptsFromGroup:(NSString *)groupName world:(WebScriptWorld *)world
4087 {
4088     String group(groupName);
4089     if (group.isEmpty())
4090         return;
4091     
4092     PageGroup* pageGroup = PageGroup::pageGroup(group);
4093     if (!pageGroup)
4094         return;
4095
4096     if (!world)
4097         return;
4098
4099     pageGroup->removeUserScriptsFromWorld(*core(world));
4100 }
4101
4102 + (void)_removeUserStyleSheetsFromGroup:(NSString *)groupName world:(WebScriptWorld *)world
4103 {
4104     String group(groupName);
4105     if (group.isEmpty())
4106         return;
4107     
4108     PageGroup* pageGroup = PageGroup::pageGroup(group);
4109     if (!pageGroup)
4110         return;
4111
4112     if (!world)
4113         return;
4114
4115     pageGroup->removeUserStyleSheetsFromWorld(*core(world));
4116 }
4117
4118 + (void)_removeAllUserContentFromGroup:(NSString *)groupName
4119 {
4120     String group(groupName);
4121     if (group.isEmpty())
4122         return;
4123     
4124     PageGroup* pageGroup = PageGroup::pageGroup(group);
4125     if (!pageGroup)
4126         return;
4127     
4128     pageGroup->removeAllUserContent();
4129 }
4130
4131 - (BOOL)allowsNewCSSAnimationsWhileSuspended
4132 {
4133     Frame* frame = core([self mainFrame]);
4134     if (frame)
4135         return frame->animation().allowsNewAnimationsWhileSuspended();
4136
4137     return false;
4138 }
4139
4140 - (void)setAllowsNewCSSAnimationsWhileSuspended:(BOOL)allowed
4141 {
4142     Frame* frame = core([self mainFrame]);
4143     if (frame)
4144         frame->animation().setAllowsNewAnimationsWhileSuspended(allowed);
4145 }
4146
4147 - (BOOL)cssAnimationsSuspended
4148 {
4149     // should ask the page!
4150     Frame* frame = core([self mainFrame]);
4151     if (frame)
4152         return frame->animation().isSuspended();
4153
4154     return false;
4155 }
4156
4157 - (void)setCSSAnimationsSuspended:(BOOL)suspended
4158 {
4159     Frame* frame = core([self mainFrame]);
4160     if (suspended == frame->animation().isSuspended())
4161         return;
4162         
4163     if (suspended)
4164         frame->animation().suspendAnimations();
4165     else
4166         frame->animation().resumeAnimations();
4167 }
4168
4169 + (void)_setDomainRelaxationForbidden:(BOOL)forbidden forURLScheme:(NSString *)scheme
4170 {
4171     SchemeRegistry::setDomainRelaxationForbiddenForURLScheme(forbidden, scheme);
4172 }
4173
4174 + (void)_registerURLSchemeAsSecure:(NSString *)scheme
4175 {
4176     SchemeRegistry::registerURLSchemeAsSecure(scheme);
4177 }
4178
4179 + (void)_registerURLSchemeAsAllowingLocalStorageAccessInPrivateBrowsing:(NSString *)scheme
4180 {
4181     SchemeRegistry::registerURLSchemeAsAllowingLocalStorageAccessInPrivateBrowsing(scheme);
4182 }
4183
4184 + (void)_registerURLSchemeAsAllowingDatabaseAccessInPrivateBrowsing:(NSString *)scheme
4185 {
4186     SchemeRegistry::registerURLSchemeAsAllowingDatabaseAccessInPrivateBrowsing(scheme);
4187 }
4188
4189 - (void)_scaleWebView:(float)scale atOrigin:(NSPoint)origin
4190 {
4191     _private->page->setPageScaleFactor(scale, IntPoint(origin));
4192 }
4193
4194 - (float)_viewScaleFactor
4195 {
4196     return _private->page->pageScaleFactor();
4197 }
4198
4199 - (void)_setUseFixedLayout:(BOOL)fixed
4200 {
4201     Frame* coreFrame = [self _mainCoreFrame];
4202     if (!coreFrame)
4203         return;
4204
4205     FrameView* view = coreFrame->view();
4206     if (!view)
4207         return;
4208
4209     view->setUseFixedLayout(fixed);
4210     if (!fixed)
4211         view->setFixedLayoutSize(IntSize());
4212 }
4213
4214 #if !PLATFORM(IOS)
4215 - (void)_setFixedLayoutSize:(NSSize)size
4216 {
4217     Frame* coreFrame = [self _mainCoreFrame];
4218     if (!coreFrame)
4219         return;
4220     
4221     FrameView* view = coreFrame->view();
4222     if (!view)
4223         return;
4224     
4225     view->setFixedLayoutSize(IntSize(size));
4226     view->forceLayout();
4227 }
4228 #endif
4229
4230 - (BOOL)_useFixedLayout
4231 {
4232     Frame* coreFrame = [self _mainCoreFrame];
4233     if (!coreFrame)
4234         return NO;
4235     
4236     FrameView* view = coreFrame->view();
4237     if (!view)
4238         return NO;
4239     
4240     return view->useFixedLayout();
4241 }
4242
4243 #if !PLATFORM(IOS)
4244 - (NSSize)_fixedLayoutSize
4245 {
4246     Frame* coreFrame = [self _mainCoreFrame];
4247     if (!coreFrame)
4248         return IntSize();
4249     
4250     FrameView* view = coreFrame->view();
4251     if (!view)
4252         return IntSize();
4253
4254     return view->fixedLayoutSize();
4255 }
4256 #endif
4257
4258 - (void)_setPaginationMode:(WebPaginationMode)paginationMode
4259 {
4260     Page* page = core(self);
4261     if (!page)
4262         return;
4263
4264     Pagination pagination = page->pagination();
4265     switch (paginationMode) {
4266     case WebPaginationModeUnpaginated:
4267         pagination.mode = Pagination::Unpaginated;
4268         break;
4269     case WebPaginationModeLeftToRight:
4270         pagination.mode = Pagination::LeftToRightPaginated;
4271         break;
4272     case WebPaginationModeRightToLeft:
4273         pagination.mode = Pagination::RightToLeftPaginated;
4274         break;
4275     case WebPaginationModeTopToBottom: