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 "JSNode.h" 31#include "ScriptState.h" 32 33namespace WebCore { 34 35JSC::JSValue createWrapper(JSC::ExecState*, JSDOMGlobalObject*, Node*); 36 37inline JSC::JSValue toJS(JSC::ExecState* exec, JSDOMGlobalObject* globalObject, Node* node) 38{ 39 if (!node) 40 return JSC::jsNull(); 41 42 JSNode* wrapper = JSC::jsCast<JSNode*>(getCachedWrapper(currentWorld(exec), node)); 43 if (wrapper) 44 return wrapper; 45 46 return createWrapper(exec, globalObject, node); 47} 48 49// In the C++ DOM, a node tree survives as long as there is a reference to its 50// root. In the JavaScript DOM, a node tree survives as long as there is a 51// reference to any node in the tree. To model the JavaScript DOM on top of 52// the C++ DOM, we ensure that the root of every tree has a JavaScript wrapper. 53void willCreatePossiblyOrphanedTreeByRemovalSlowCase(Node* root); 54inline void willCreatePossiblyOrphanedTreeByRemoval(Node* root) 55{ 56 if (root->wrapper()) 57 return; 58 59 if (!root->hasChildNodes()) 60 return; 61 62 willCreatePossiblyOrphanedTreeByRemovalSlowCase(root); 63} 64 65inline void* root(Node* node) 66{ 67 if (node->inDocument()) 68 return node->document(); 69 70 while (node->parentOrShadowHostNode()) 71 node = node->parentOrShadowHostNode(); 72 return node; 73} 74 75} // namespace WebCore 76 77#endif // JSDOMNodeCustom_h 78