V8StyleSheetCustom.cpp revision 5e2bc6953fe6923165b8a5d7679939693a1d58d6 
1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "V8StyleSheet.h"
33
34#include "V8CSSStyleSheet.h"
35#include "V8Node.h"
36
37namespace WebCore {
38
39v8::Handle<v8::Value> toV8(StyleSheet* impl)
40{
41    if (!impl)
42        return v8::Null();
43    if (impl->isCSSStyleSheet())
44        return toV8(static_cast<CSSStyleSheet*>(impl));
45    v8::Handle<v8::Object> wrapper = V8StyleSheet::wrap(impl);
46    // Add a hidden reference from stylesheet object to its owner node.
47    Node* ownerNode = impl->ownerNode();
48    if (ownerNode && !wrapper.IsEmpty()) {
49        v8::Handle<v8::Object> owner = v8::Handle<v8::Object>::Cast(toV8(ownerNode));
50        wrapper->SetInternalField(V8StyleSheet::ownerNodeIndex, owner);
51    }
52    return wrapper;
53}
54
55} // namespace WebCore
56