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1/*
2 * Copyright (C) 2004, 2006, 2006, 2008 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 COMPUTER, 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 COMPUTER, 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 "DOMHTMLLinkElement.h"
32#import "DOMHTMLStyleElement.h"
33#import "DOMInternal.h"
34#import "DOMProcessingInstruction.h"
35#import "DOMStyleSheet.h"
36#import "HTMLLinkElement.h"
37#import "HTMLStyleElement.h"
38#import "ProcessingInstruction.h"
39#import "StyleSheet.h"
40#import "WebScriptObjectPrivate.h"
41#import <wtf/UnusedParam.h>
42
43@implementation DOMObject
44
45// Prevent creation of DOM objects by clients who just "[[xxx alloc] init]".
46- (id)init
47{
48    [NSException raise:NSGenericException format:@"+[%@ init]: should never be used", NSStringFromClass([self class])];
49    [self release];
50    return nil;
51}
52
53- (void)dealloc
54{
55    if (_internal)
56        WebCore::removeDOMWrapper(_internal);
57    [super dealloc];
58}
59
60- (id)copyWithZone:(NSZone *)unusedZone
61{
62    UNUSED_PARAM(unusedZone);
63    return [self retain];
64}
65
66@end
67
68@implementation DOMObject (DOMLinkStyle)
69
70- (DOMStyleSheet *)sheet
71{
72    WebCore::StyleSheet *styleSheet;
73
74    if ([self isKindOfClass:[DOMProcessingInstruction class]])
75        styleSheet = static_cast<WebCore::ProcessingInstruction*>([(DOMProcessingInstruction *)self _node])->sheet();
76    else if ([self isKindOfClass:[DOMHTMLLinkElement class]])
77        styleSheet = static_cast<WebCore::HTMLLinkElement*>([(DOMHTMLLinkElement *)self _node])->sheet();
78    else if ([self isKindOfClass:[DOMHTMLStyleElement class]])
79        styleSheet = static_cast<WebCore::HTMLStyleElement*>([(DOMHTMLStyleElement *)self _node])->sheet();
80    else
81        return nil;
82
83    return [DOMStyleSheet _wrapStyleSheet:styleSheet];
84}
85
86@end
87
88@implementation DOMObject (WebCoreInternal)
89
90- (id)_init
91{
92    return [super _init];
93}
94
95@end
96