DOMObject.mm   [plain text]

/*
* Copyright (C) 2004, 2006-2009, 2015 Apple Inc. All rights reserved.
* Copyright (C) 2006 James G. Speth <speth@end.com>
* Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. OR
* 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 "DOMObject.h"

#import "DOMHTMLLinkElementInternal.h"
#import "DOMHTMLStyleElementInternal.h"
#import "DOMInternal.h"
#import "DOMProcessingInstructionInternal.h"
#import "DOMStyleSheetInternal.h"
#import <WebCore/HTMLLinkElement.h>
#import <WebCore/HTMLStyleElement.h>
#import <WebCore/ProcessingInstruction.h>
#import <WebCore/StyleSheet.h>
#import <WebCore/WebScriptObjectPrivate.h>

@implementation DOMObject

// Prevent creation of DOM objects by clients who just "[[xxx alloc] init]".
- (instancetype)init
{
[NSException raise:NSGenericException format:@"+[%@ init]: should never be used", NSStringFromClass([self class])];

return nil;
}

- (void)dealloc
{
if (_internal)
removeDOMWrapper(_internal);
[super dealloc];
}

- (id)copyWithZone:(NSZone *)unusedZone
{
UNUSED_PARAM(unusedZone);
return [self retain];
}

@end

@implementation DOMObject (DOMLinkStyle)

- (DOMStyleSheet *)sheet
{
WebCore::StyleSheet* styleSheet;

if ([self isKindOfClass:[DOMProcessingInstruction class]])
styleSheet = core(static_cast<DOMProcessingInstruction *>(self))->sheet();
else if ([self isKindOfClass:[DOMHTMLLinkElement class]])
styleSheet = core(static_cast<DOMHTMLLinkElement *>(self))->sheet();
else if ([self isKindOfClass:[DOMHTMLStyleElement class]])
styleSheet = core(static_cast<DOMHTMLStyleElement *>(self))->sheet();
else
return nil;

return kit(styleSheet);
}

@end