/*

 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.

 * Copyright (C) 2006 David Smith (catfish.man@gmail.com)

 * Copyright (C) 2010 Igalia S.L

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1.  Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer. 

 * 2.  Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution. 

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission. 

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#import "WebViewInternal.h"

#import "WebViewData.h"

#import "DOMCSSStyleDeclarationInternal.h"

#import "DOMNodeInternal.h"

#import "DOMRangeInternal.h"

#import "WebBackForwardListInternal.h"

#import "WebBaseNetscapePluginView.h"

#import "WebCache.h"

#import "WebChromeClient.h"

#import "WebContextMenuClient.h"

#import "WebDOMOperationsPrivate.h"

#import "WebDataSourceInternal.h"

#import "WebDatabaseManagerInternal.h"

#import "WebDefaultEditingDelegate.h"

#import "WebDefaultPolicyDelegate.h"

#import "WebDefaultUIDelegate.h"

#import "WebDelegateImplementationCaching.h"

#import "WebDocument.h"

#import "WebDocumentInternal.h"

#import "WebDownload.h"

#import "WebDownloadInternal.h"

#import "WebDragClient.h"

#import "WebDynamicScrollBarsViewInternal.h"

#import "WebEditingDelegate.h"

#import "WebEditorClient.h"

#import "WebFormDelegatePrivate.h"

#import "WebFrameInternal.h"

#import "WebFrameViewInternal.h"

#import "WebGeolocationControllerClient.h"

#import "WebGeolocationPositionInternal.h"

#import "WebHTMLRepresentation.h"

#import "WebHTMLViewInternal.h"

#import "WebHistoryItemInternal.h"

#import "WebIconDatabaseInternal.h"

#import "WebInspector.h"

#import "WebInspectorClient.h"

#import "WebKitErrors.h"

#import "WebKitLogging.h"

#import "WebKitNSStringExtras.h"

#import "WebKitStatisticsPrivate.h"

#import "WebKitSystemBits.h"

#import "WebKitVersionChecks.h"

#import "WebLocalizableStrings.h"

#import "WebNSDataExtras.h"

#import "WebNSDataExtrasPrivate.h"

#import "WebNSDictionaryExtras.h"

#import "WebNSEventExtras.h"

#import "WebNSObjectExtras.h"

#import "WebNSPasteboardExtras.h"

#import "WebNSPrintOperationExtras.h"

#import "WebNSURLExtras.h"

#import "WebNSURLRequestExtras.h"

#import "WebNSUserDefaultsExtras.h"

#import "WebNSViewExtras.h"

#import "WebNodeHighlight.h"

#import "WebPDFView.h"

#import "WebPanelAuthenticationHandler.h"

#import "WebPasteboardHelper.h"

#import "WebPlatformStrategies.h"

#import "WebPluginDatabase.h"

#import "WebPluginHalterClient.h"

#import "WebPolicyDelegate.h"

#import "WebPreferenceKeysPrivate.h"

#import "WebPreferencesPrivate.h"

#import "WebScriptDebugDelegate.h"

#import "WebScriptWorldInternal.h"

#import "WebSystemInterface.h"

#import "WebTextCompletionController.h"

#import "WebTextIterator.h"

#import "WebUIDelegate.h"

#import "WebUIDelegatePrivate.h"

#import "WebVideoFullscreenController.h"

#import <CoreFoundation/CFSet.h>

#import <Foundation/NSURLConnection.h>

#import <JavaScriptCore/APICast.h>

#import <JavaScriptCore/JSValueRef.h>

#import <WebCore/AbstractDatabase.h>

#import <WebCore/ApplicationCacheStorage.h>

#import <WebCore/BackForwardList.h>

#import <WebCore/Cache.h>

#import <WebCore/ColorMac.h>

#import <WebCore/CSSComputedStyleDeclaration.h>

#import <WebCore/Cursor.h>

#import <WebCore/Document.h>

#import <WebCore/DocumentLoader.h>

#import <WebCore/DragController.h>

#import <WebCore/DragData.h>

#import <WebCore/Editor.h>

#import <WebCore/EventHandler.h>

#import <WebCore/ExceptionHandlers.h>

#import <WebCore/FocusController.h>

#import <WebCore/Frame.h>

#import <WebCore/FrameLoader.h>

#import <WebCore/FrameTree.h>

#import <WebCore/FrameView.h>

#import <WebCore/GCController.h>

#import <WebCore/HTMLMediaElement.h>

#import <WebCore/HTMLNames.h>

#import <WebCore/HistoryItem.h>

#import <WebCore/IconDatabase.h>

#import <WebCore/JSCSSStyleDeclaration.h>

#import <WebCore/JSElement.h>

#import <WebCore/Logging.h>

#import <WebCore/MIMETypeRegistry.h>

#import <WebCore/Page.h>

#import <WebCore/PageCache.h>

#import <WebCore/PageGroup.h>

#import <WebCore/PlatformMouseEvent.h>

#import <WebCore/ProgressTracker.h>

#import <WebCore/RenderWidget.h>

#import <WebCore/ResourceHandle.h>

#import <WebCore/RuntimeApplicationChecks.h>

#import <WebCore/SchemeRegistry.h>

#import <WebCore/ScriptController.h>

#import <WebCore/ScriptValue.h>

#import <WebCore/SecurityOrigin.h>

#import <WebCore/SelectionController.h>

#import <WebCore/Settings.h>

#import <WebCore/TextResourceDecoder.h>

#import <WebCore/ThreadCheck.h>

#import <WebCore/WebCoreObjCExtras.h>

#import <WebCore/WebCoreView.h>

#import <WebCore/Widget.h>

#import <WebKit/DOM.h>

#import <WebKit/DOMExtensions.h>

#import <WebKit/DOMPrivate.h>

#import <WebKitSystemInterface.h>

#import <mach-o/dyld.h>

#import <objc/objc-auto.h>

#import <objc/objc-runtime.h>

#import <runtime/ArrayPrototype.h>

#import <runtime/DateInstance.h>

#import <runtime/InitializeThreading.h>

#import <runtime/JSLock.h>

#import <runtime/JSValue.h>

#import <wtf/Assertions.h>

#import <wtf/HashTraits.h>

#import <wtf/RefCountedLeakCounter.h>

#import <wtf/RefPtr.h>

#import <wtf/StdLibExtras.h>

#import <wtf/Threading.h>

#if ENABLE(DASHBOARD_SUPPORT)

#import <WebKit/WebDashboardRegion.h>

#endif

#if ENABLE(CLIENT_BASED_GEOLOCATION)

#import <WebCore/GeolocationController.h>

#import <WebCore/GeolocationError.h>

#endif

#if ENABLE(VIDEO) && USE(GSTREAMER)

#import <glib.h>

#endif

@interface NSSpellChecker (WebNSSpellCheckerDetails)

- (void)_preflightChosenSpellServer;

@end

@interface NSView (WebNSViewDetails)

- (NSView *)_hitTest:(NSPoint *)aPoint dragTypes:(NSSet *)types;

- (void)_autoscrollForDraggingInfo:(id)dragInfo timeDelta:(NSTimeInterval)repeatDelta;

- (BOOL)_shouldAutoscrollForDraggingInfo:(id)dragInfo;

@end

@interface NSWindow (WebNSWindowDetails) 

- (id)_oldFirstResponderBeforeBecoming;

- (void)_enableScreenUpdatesIfNeeded;

- (BOOL)_wrapsCarbonWindow;

@end

using namespace WebCore;

using namespace JSC;

#if defined(__ppc__) || defined(__ppc64__)

#define PROCESSOR "PPC"

#elif defined(__i386__) || defined(__x86_64__)

#define PROCESSOR "Intel"

#else

#error Unknown architecture

#endif

#define FOR_EACH_RESPONDER_SELECTOR(macro) \

macro(alignCenter) \

macro(alignJustified) \

macro(alignLeft) \

macro(alignRight) \

macro(capitalizeWord) \

macro(centerSelectionInVisibleArea) \

macro(changeAttributes) \

macro(changeBaseWritingDirection) \

macro(changeBaseWritingDirectionToLTR) \

macro(changeBaseWritingDirectionToRTL) \

macro(changeColor) \

macro(changeDocumentBackgroundColor) \

macro(changeFont) \

macro(changeSpelling) \

macro(checkSpelling) \

macro(complete) \

macro(copy) \

macro(copyFont) \

macro(cut) \

macro(delete) \

macro(deleteBackward) \

macro(deleteBackwardByDecomposingPreviousCharacter) \

macro(deleteForward) \

macro(deleteToBeginningOfLine) \

macro(deleteToBeginningOfParagraph) \

macro(deleteToEndOfLine) \

macro(deleteToEndOfParagraph) \

macro(deleteToMark) \

macro(deleteWordBackward) \

macro(deleteWordForward) \

macro(ignoreSpelling) \

macro(indent) \

macro(insertBacktab) \

macro(insertLineBreak) \

macro(insertNewline) \

macro(insertNewlineIgnoringFieldEditor) \

macro(insertParagraphSeparator) \

macro(insertTab) \

macro(insertTabIgnoringFieldEditor) \

macro(lowercaseWord) \

macro(makeBaseWritingDirectionLeftToRight) \

macro(makeBaseWritingDirectionRightToLeft) \

macro(makeTextWritingDirectionLeftToRight) \

macro(makeTextWritingDirectionNatural) \

macro(makeTextWritingDirectionRightToLeft) \

macro(moveBackward) \

macro(moveBackwardAndModifySelection) \

macro(moveDown) \

macro(moveDownAndModifySelection) \

macro(moveForward) \

macro(moveForwardAndModifySelection) \

macro(moveLeft) \

macro(moveLeftAndModifySelection) \

macro(moveParagraphBackwardAndModifySelection) \

macro(moveParagraphForwardAndModifySelection) \

macro(moveRight) \

macro(moveRightAndModifySelection) \

macro(moveToBeginningOfDocument) \

macro(moveToBeginningOfDocumentAndModifySelection) \

macro(moveToBeginningOfLine) \

macro(moveToBeginningOfLineAndModifySelection) \

macro(moveToBeginningOfParagraph) \

macro(moveToBeginningOfParagraphAndModifySelection) \

macro(moveToBeginningOfSentence) \

macro(moveToBeginningOfSentenceAndModifySelection) \

macro(moveToEndOfDocument) \

macro(moveToEndOfDocumentAndModifySelection) \

macro(moveToEndOfLine) \

macro(moveToEndOfLineAndModifySelection) \

macro(moveToEndOfParagraph) \

macro(moveToEndOfParagraphAndModifySelection) \

macro(moveToEndOfSentence) \

macro(moveToEndOfSentenceAndModifySelection) \

macro(moveToLeftEndOfLine) \

macro(moveToLeftEndOfLineAndModifySelection) \

macro(moveToRightEndOfLine) \

macro(moveToRightEndOfLineAndModifySelection) \

macro(moveUp) \

macro(moveUpAndModifySelection) \

macro(moveWordBackward) \

macro(moveWordBackwardAndModifySelection) \

macro(moveWordForward) \

macro(moveWordForwardAndModifySelection) \

macro(moveWordLeft) \

macro(moveWordLeftAndModifySelection) \

macro(moveWordRight) \

macro(moveWordRightAndModifySelection) \

macro(outdent) \

macro(orderFrontSubstitutionsPanel) \

macro(pageDown) \

macro(pageDownAndModifySelection) \

macro(pageUp) \

macro(pageUpAndModifySelection) \

macro(paste) \

macro(pasteAsPlainText) \

macro(pasteAsRichText) \

macro(pasteFont) \

macro(performFindPanelAction) \

macro(scrollLineDown) \

macro(scrollLineUp) \

macro(scrollPageDown) \

macro(scrollPageUp) \

macro(scrollToBeginningOfDocument) \

macro(scrollToEndOfDocument) \

macro(selectAll) \

macro(selectLine) \

macro(selectParagraph) \

macro(selectSentence) \

macro(selectToMark) \

macro(selectWord) \

macro(setMark) \

macro(showGuessPanel) \

macro(startSpeaking) \

macro(stopSpeaking) \

macro(subscript) \

macro(superscript) \

macro(swapWithMark) \

macro(takeFindStringFromSelection) \

macro(toggleBaseWritingDirection) \

macro(transpose) \

macro(underline) \

macro(unscript) \

macro(uppercaseWord) \

macro(yank) \

macro(yankAndSelect) \

#define WebKitOriginalTopPrintingMarginKey @"WebKitOriginalTopMargin"

#define WebKitOriginalBottomPrintingMarginKey @"WebKitOriginalBottomMargin"

#define KeyboardUIModeDidChangeNotification @"com.apple.KeyboardUIModeDidChange"

#define AppleKeyboardUIMode CFSTR("AppleKeyboardUIMode")

#define UniversalAccessDomain CFSTR("com.apple.universalaccess")

static BOOL s_didSetCacheModel;

static WebCacheModel s_cacheModel = WebCacheModelDocumentViewer;

#ifndef NDEBUG

static const char webViewIsOpen[] = "At least one WebView is still open.";

#endif

@interface NSObject (WebValidateWithoutDelegate)

- (BOOL)validateUserInterfaceItemWithoutDelegate:(id <NSValidatedUserInterfaceItem>)item;

@end

@interface _WebSafeForwarder : NSObject

{

    id target; // Non-retained. Don't retain delegates.

    id defaultTarget;

    BOOL catchExceptions;

}

- (id)initWithTarget:(id)target defaultTarget:(id)defaultTarget catchExceptions:(BOOL)catchExceptions;

@end

@interface WebView (WebFileInternal)

- (BOOL)_isLoading;

- (WebFrameView *)_frameViewAtWindowPoint:(NSPoint)point;

- (WebFrame *)_focusedFrame;

+ (void)_preflightSpellChecker;

- (BOOL)_continuousCheckingAllowed;

- (NSResponder *)_responderForResponderOperations;

#if USE(ACCELERATED_COMPOSITING)

- (void)_clearLayerSyncLoopObserver;

#endif

#if ENABLE(VIDEO) && USE(GSTREAMER)

- (void)_clearGlibLoopObserver;

#endif

@end

static void patchMailRemoveAttributesMethod();

NSString *WebElementDOMNodeKey =            @"WebElementDOMNode";

NSString *WebElementFrameKey =              @"WebElementFrame";

NSString *WebElementImageKey =              @"WebElementImage";

NSString *WebElementImageAltStringKey =     @"WebElementImageAltString";

NSString *WebElementImageRectKey =          @"WebElementImageRect";

NSString *WebElementImageURLKey =           @"WebElementImageURL";

NSString *WebElementIsSelectedKey =         @"WebElementIsSelected";

NSString *WebElementLinkLabelKey =          @"WebElementLinkLabel";

NSString *WebElementLinkTargetFrameKey =    @"WebElementTargetFrame";

NSString *WebElementLinkTitleKey =          @"WebElementLinkTitle";

NSString *WebElementLinkURLKey =            @"WebElementLinkURL";

NSString *WebElementSpellingToolTipKey =    @"WebElementSpellingToolTip";

NSString *WebElementTitleKey =              @"WebElementTitle";

NSString *WebElementLinkIsLiveKey =         @"WebElementLinkIsLive";

NSString *WebElementIsInScrollBarKey =      @"WebElementIsInScrollBar";

NSString *WebElementIsContentEditableKey =  @"WebElementIsContentEditableKey";

NSString *WebViewProgressStartedNotification =          @"WebProgressStartedNotification";

NSString *WebViewProgressEstimateChangedNotification =  @"WebProgressEstimateChangedNotification";

NSString *WebViewProgressFinishedNotification =         @"WebProgressFinishedNotification";

NSString * const WebViewDidBeginEditingNotification =         @"WebViewDidBeginEditingNotification";

NSString * const WebViewDidChangeNotification =               @"WebViewDidChangeNotification";

NSString * const WebViewDidEndEditingNotification =           @"WebViewDidEndEditingNotification";

NSString * const WebViewDidChangeTypingStyleNotification =    @"WebViewDidChangeTypingStyleNotification";

NSString * const WebViewDidChangeSelectionNotification =      @"WebViewDidChangeSelectionNotification";

enum { WebViewVersion = 4 };

#define timedLayoutSize 4096

static NSMutableSet *schemesWithRepresentationsSet;

NSString *_WebCanGoBackKey =            @"canGoBack";

NSString *_WebCanGoForwardKey =         @"canGoForward";

NSString *_WebEstimatedProgressKey =    @"estimatedProgress";

NSString *_WebIsLoadingKey =            @"isLoading";

NSString *_WebMainFrameIconKey =        @"mainFrameIcon";

NSString *_WebMainFrameTitleKey =       @"mainFrameTitle";

NSString *_WebMainFrameURLKey =         @"mainFrameURL";

NSString *_WebMainFrameDocumentKey =    @"mainFrameDocument";

NSString *_WebViewDidStartAcceleratedCompositingNotification = @"_WebViewDidStartAcceleratedCompositing";

@interface WebProgressItem : NSObject

{

@public

    long long bytesReceived;

    long long estimatedLength;

}

@end

@implementation WebProgressItem

@end

static BOOL continuousSpellCheckingEnabled;

#ifndef BUILDING_ON_TIGER

static BOOL grammarCheckingEnabled;

#endif

#if !defined(BUILDING_ON_TIGER) && !defined(BUILDING_ON_LEOPARD)

static BOOL automaticQuoteSubstitutionEnabled;

static BOOL automaticLinkDetectionEnabled;

static BOOL automaticDashSubstitutionEnabled;

static BOOL automaticTextReplacementEnabled;

static BOOL automaticSpellingCorrectionEnabled;

#endif

@implementation WebView (AllWebViews)

static CFSetCallBacks NonRetainingSetCallbacks = {

    0,

    NULL,

    NULL,

    CFCopyDescription,

    CFEqual,

    CFHash

};

static CFMutableSetRef allWebViewsSet;

+ (void)_makeAllWebViewsPerformSelector:(SEL)selector

{

    if (!allWebViewsSet)

        return;

    [(NSMutableSet *)allWebViewsSet makeObjectsPerformSelector:selector];

}

- (void)_removeFromAllWebViewsSet

{

    if (allWebViewsSet)

        CFSetRemoveValue(allWebViewsSet, self);

}

- (void)_addToAllWebViewsSet

{

    if (!allWebViewsSet)

        allWebViewsSet = CFSetCreateMutable(NULL, 0, &NonRetainingSetCallbacks);

    CFSetSetValue(allWebViewsSet, self);

}

@end

@implementation WebView (WebPrivate)

static inline int callGestalt(OSType selector)

{

    SInt32 value = 0;

    Gestalt(selector, &value);

    return value;

}

// Uses underscores instead of dots because if "4." ever appears in a user agent string, old DHTML libraries treat it as Netscape 4.

static NSString *createMacOSXVersionString()

{

    // Can't use -[NSProcessInfo operatingSystemVersionString] because it has too much stuff we don't want.

    int major = callGestalt(gestaltSystemVersionMajor);

    ASSERT(major);

    int minor = callGestalt(gestaltSystemVersionMinor);

    int bugFix = callGestalt(gestaltSystemVersionBugFix);

    if (bugFix)

        return [[NSString alloc] initWithFormat:@"%d_%d_%d", major, minor, bugFix];

    if (minor)

        return [[NSString alloc] initWithFormat:@"%d_%d", major, minor];

    return [[NSString alloc] initWithFormat:@"%d", major];

}

static NSString *createUserVisibleWebKitVersionString()

{

    // If the version is 4 digits long or longer, then the first digit represents

    // the version of the OS. Our user agent string should not include this first digit,

    // so strip it off and report the rest as the version. <rdar://problem/4997547>

    NSString *fullVersion = [[NSBundle bundleForClass:[WebView class]] objectForInfoDictionaryKey:(NSString *)kCFBundleVersionKey];

    NSRange nonDigitRange = [fullVersion rangeOfCharacterFromSet:[[NSCharacterSet decimalDigitCharacterSet] invertedSet]];

    if (nonDigitRange.location == NSNotFound && [fullVersion length] >= 4)

        return [[fullVersion substringFromIndex:1] copy];

    if (nonDigitRange.location != NSNotFound && nonDigitRange.location >= 4)

        return [[fullVersion substringFromIndex:1] copy];

    return [fullVersion copy];

}

+ (NSString *)_standardUserAgentWithApplicationName:(NSString *)applicationName