1 /*
2 * Copyright (C) 2007, 2008, 2009 Apple 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
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "JSStyleSheet.h"
28
29 #include "CSSStyleSheet.h"
30 #include "Node.h"
31 #include "JSCSSStyleSheet.h"
32 #include "JSNode.h"
33
34 using namespace JSC;
35
36 namespace WebCore {
37
toJS(ExecState * exec,JSDOMGlobalObject * globalObject,StyleSheet * styleSheet)38 JSValue toJS(ExecState* exec, JSDOMGlobalObject* globalObject, StyleSheet* styleSheet)
39 {
40 if (!styleSheet)
41 return jsNull();
42
43 DOMObject* wrapper = getCachedDOMObjectWrapper(exec->globalData(), styleSheet);
44 if (wrapper)
45 return wrapper;
46
47 if (styleSheet->isCSSStyleSheet())
48 wrapper = CREATE_DOM_OBJECT_WRAPPER(exec, globalObject, CSSStyleSheet, styleSheet);
49 else
50 wrapper = CREATE_DOM_OBJECT_WRAPPER(exec, globalObject, StyleSheet, styleSheet);
51
52 return wrapper;
53 }
54
markChildren(MarkStack & markStack)55 void JSStyleSheet::markChildren(MarkStack& markStack)
56 {
57 Base::markChildren(markStack);
58
59 // This prevents us from having a style sheet with a dangling ownerNode pointer.
60 // A better solution would be to handle this on the DOM side -- if the style sheet
61 // is kept around, then we want the node to stay around too. One possibility would
62 // be to make ref/deref on the style sheet ref/deref the node instead, but there's
63 // a lot of disentangling of the CSS DOM objects that would need to happen first.
64 if (Node* ownerNode = impl()->ownerNode()) {
65 if (JSNode* ownerNodeWrapper = getCachedDOMNodeWrapper(ownerNode->document(), ownerNode))
66 markStack.append(ownerNodeWrapper);
67 }
68 }
69
70 } // namespace WebCore
71