1/* 2 * Copyright (C) 2004, 2006, 2006, 2008, 2009 Apple Inc. All rights reserved. 3 * Copyright (C) 2006 James G. Speth <speth@end.com> 4 * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com> 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 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28#import "config.h" 29#import "DOMObject.h" 30 31#import "DOMHTMLLinkElementInternal.h" 32#import "DOMHTMLStyleElementInternal.h" 33#import "DOMInternal.h" 34#import "DOMProcessingInstructionInternal.h" 35#import "DOMStyleSheetInternal.h" 36#import "HTMLLinkElement.h" 37#import "HTMLStyleElement.h" 38#import "ProcessingInstruction.h" 39#import "StyleSheet.h" 40#import "WebScriptObjectPrivate.h" 41 42@implementation DOMObject 43 44// Prevent creation of DOM objects by clients who just "[[xxx alloc] init]". 45- (id)init 46{ 47 [NSException raise:NSGenericException format:@"+[%@ init]: should never be used", NSStringFromClass([self class])]; 48 [self release]; 49 return nil; 50} 51 52- (void)dealloc 53{ 54 if (_internal) 55 removeDOMWrapper(_internal); 56 [super dealloc]; 57} 58 59- (id)copyWithZone:(NSZone *)unusedZone 60{ 61 UNUSED_PARAM(unusedZone); 62 return [self retain]; 63} 64 65@end 66 67@implementation DOMObject (DOMLinkStyle) 68 69- (DOMStyleSheet *)sheet 70{ 71 WebCore::StyleSheet* styleSheet; 72 73 if ([self isKindOfClass:[DOMProcessingInstruction class]]) 74 styleSheet = core(static_cast<DOMProcessingInstruction *>(self))->sheet(); 75 else if ([self isKindOfClass:[DOMHTMLLinkElement class]]) 76 styleSheet = core(static_cast<DOMHTMLLinkElement *>(self))->sheet(); 77 else if ([self isKindOfClass:[DOMHTMLStyleElement class]]) 78 styleSheet = core(static_cast<DOMHTMLStyleElement *>(self))->sheet(); 79 else 80 return nil; 81 82 return kit(styleSheet); 83} 84 85@end 86