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 "JSNamedNodeMap.h"
28
29 #include "JSNode.h"
30 #include "Element.h"
31 #include "NamedNodeMap.h"
32
33 using namespace JSC;
34
35 namespace WebCore {
36
37 class JSNamedNodeMapOwner : public JSC::WeakHandleOwner {
38 virtual bool isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown>, void* context, JSC::MarkStack&);
39 virtual void finalize(JSC::Handle<JSC::Unknown>, void* context);
40 };
41
isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle,void *,MarkStack & markStack)42 bool JSNamedNodeMapOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, MarkStack& markStack)
43 {
44 JSNamedNodeMap* jsNamedNodeMap = static_cast<JSNamedNodeMap*>(handle.get().asCell());
45 if (!jsNamedNodeMap->hasCustomProperties())
46 return false;
47 Element* element = jsNamedNodeMap->impl()->element();
48 if (!element)
49 return false;
50 return markStack.containsOpaqueRoot(root(element));
51 }
52
finalize(JSC::Handle<JSC::Unknown> handle,void * context)53 void JSNamedNodeMapOwner::finalize(JSC::Handle<JSC::Unknown> handle, void* context)
54 {
55 JSNamedNodeMap* jsNamedNodeMap = static_cast<JSNamedNodeMap*>(handle.get().asCell());
56 DOMWrapperWorld* world = static_cast<DOMWrapperWorld*>(context);
57 uncacheWrapper(world, jsNamedNodeMap->impl(), jsNamedNodeMap);
58 }
59
wrapperOwner(DOMWrapperWorld *,NamedNodeMap *)60 inline JSC::WeakHandleOwner* wrapperOwner(DOMWrapperWorld*, NamedNodeMap*)
61 {
62 DEFINE_STATIC_LOCAL(JSNamedNodeMapOwner, jsNamedNodeMapOwner, ());
63 return &jsNamedNodeMapOwner;
64 }
65
wrapperContext(DOMWrapperWorld * world,NamedNodeMap *)66 inline void* wrapperContext(DOMWrapperWorld* world, NamedNodeMap*)
67 {
68 return world;
69 }
70
canGetItemsForName(ExecState *,NamedNodeMap * impl,const Identifier & propertyName)71 bool JSNamedNodeMap::canGetItemsForName(ExecState*, NamedNodeMap* impl, const Identifier& propertyName)
72 {
73 return impl->getNamedItem(identifierToString(propertyName));
74 }
75
nameGetter(ExecState * exec,JSValue slotBase,const Identifier & propertyName)76 JSValue JSNamedNodeMap::nameGetter(ExecState* exec, JSValue slotBase, const Identifier& propertyName)
77 {
78 JSNamedNodeMap* thisObj = static_cast<JSNamedNodeMap*>(asObject(slotBase));
79 return toJS(exec, thisObj->impl()->getNamedItem(identifierToString(propertyName)));
80 }
81
markChildren(MarkStack & markStack)82 void JSNamedNodeMap::markChildren(MarkStack& markStack)
83 {
84 Base::markChildren(markStack);
85
86 // We need to keep the wrapper for our underlying NamedNodeMap's element
87 // alive because NamedNodeMap and Attr rely on the element for data, and
88 // don't know how to keep it alive correctly.
89 // FIXME: Fix this lifetime issue in the DOM, and remove this.
90 Element* element = impl()->element();
91 if (!element)
92 return;
93 markStack.addOpaqueRoot(root(element));
94 }
95
toJS(JSC::ExecState * exec,JSDOMGlobalObject * globalObject,NamedNodeMap * impl)96 JSC::JSValue toJS(JSC::ExecState* exec, JSDOMGlobalObject* globalObject, NamedNodeMap* impl)
97 {
98 return wrap<JSNamedNodeMap>(exec, globalObject, impl);
99 }
100
101 } // namespace WebCore
102