1 /* 2 * Copyright (C) 2007, 2009, 2010 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 #ifndef JSNodeCustom_h 27 #define JSNodeCustom_h 28 29 #include "JSDOMBinding.h" 30 #include <wtf/AlwaysInline.h> 31 32 namespace WebCore { 33 34 class JSNodeOwner : public JSC::WeakHandleOwner { 35 virtual bool isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown>, void* context, JSC::MarkStack&); 36 virtual void finalize(JSC::Handle<JSC::Unknown>, void* context); 37 }; 38 39 inline JSC::WeakHandleOwner* wrapperOwner(DOMWrapperWorld*, Node*) 40 { 41 DEFINE_STATIC_LOCAL(JSNodeOwner, jsNodeOwner, ()); 42 return &jsNodeOwner; 43 } 44 45 inline void* wrapperContext(DOMWrapperWorld* world, Node*) 46 { 47 return world; 48 } 49 50 inline JSDOMWrapper* getInlineCachedWrapper(DOMWrapperWorld* world, Node* node) 51 { 52 if (!world->isNormal()) 53 return 0; 54 return node->wrapper(); 55 } 56 57 inline bool setInlineCachedWrapper(DOMWrapperWorld* world, Node* node, JSDOMWrapper* wrapper) 58 { 59 if (!world->isNormal()) 60 return false; 61 ASSERT(!node->wrapper()); 62 node->setWrapper(*world->globalData(), wrapper, wrapperOwner(world, node), wrapperContext(world, node)); 63 return true; 64 } 65 66 inline bool clearInlineCachedWrapper(DOMWrapperWorld* world, Node* node, JSDOMWrapper* wrapper) 67 { 68 if (!world->isNormal()) 69 return false; 70 ASSERT_UNUSED(wrapper, node->wrapper() == wrapper); 71 node->clearWrapper(); 72 return true; 73 } 74 75 JSC::JSValue createWrapper(JSC::ExecState*, JSDOMGlobalObject*, Node*); 76 77 inline JSC::JSValue toJS(JSC::ExecState* exec, JSDOMGlobalObject* globalObject, Node* node) 78 { 79 if (!node) 80 return JSC::jsNull(); 81 82 JSNode* wrapper = static_cast<JSNode*>(getCachedWrapper(currentWorld(exec), node)); 83 if (wrapper) 84 return wrapper; 85 86 return createWrapper(exec, globalObject, node); 87 } 88 89 static inline Node* root(Node* node) 90 { 91 if (node->inDocument()) 92 return node->document(); 93 94 while (node->parentNode()) 95 node = node->parentNode(); 96 return node; 97 } 98 99 } 100 101 #endif // JSDOMNodeCustom_h 102