WebCore/bindings/js/JSNodeCustom.h
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     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 inline JSNode* getCachedDOMNodeWrapper(JSC::ExecState* exec, Document* document, Node* node)
       
    35 {
       
    36     if (currentWorld(exec)->isNormal()) {
       
    37         ASSERT(node->wrapper() == (document ? document->getWrapperCache(currentWorld(exec))->get(node) : domObjectWrapperMapFor(exec).get(node)));
       
    38         return static_cast<JSNode*>(node->wrapper());
       
    39     }
       
    40 
       
    41     if (document)
       
    42         return document->getWrapperCache(currentWorld(exec))->get(node);
       
    43     return static_cast<JSNode*>(domObjectWrapperMapFor(exec).get(node));
       
    44 }
       
    45 
       
    46 JSC::JSValue createWrapper(JSC::ExecState*, JSDOMGlobalObject*, Node*);
       
    47 
       
    48 inline JSC::JSValue toJS(JSC::ExecState* exec, JSDOMGlobalObject* globalObject, Node* node)
       
    49 {
       
    50     if (!node)
       
    51         return JSC::jsNull();
       
    52 
       
    53     JSNode* wrapper = getCachedDOMNodeWrapper(exec, node->document(), node);
       
    54     if (wrapper)
       
    55         return wrapper;
       
    56 
       
    57     return createWrapper(exec, globalObject, node);
       
    58 }
       
    59 
       
    60 }
       
    61 
       
    62 #endif // JSDOMNodeCustom_h