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 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 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 60 inline JSC::WeakHandleOwner* wrapperOwner(DOMWrapperWorld*, NamedNodeMap*) 61 { 62 DEFINE_STATIC_LOCAL(JSNamedNodeMapOwner, jsNamedNodeMapOwner, ()); 63 return &jsNamedNodeMapOwner; 64 } 65 66 inline void* wrapperContext(DOMWrapperWorld* world, NamedNodeMap*) 67 { 68 return world; 69 } 70 71 bool JSNamedNodeMap::canGetItemsForName(ExecState*, NamedNodeMap* impl, const Identifier& propertyName) 72 { 73 return impl->getNamedItem(identifierToString(propertyName)); 74 } 75 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 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 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
