WebKit/chromium/src/BoundObject.cpp
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     1 /*
       
     2  * Copyright (C) 2010 Google 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 are
       
     6  * met:
       
     7  *
       
     8  *     * Redistributions of source code must retain the above copyright
       
     9  * notice, this list of conditions and the following disclaimer.
       
    10  *     * Redistributions in binary form must reproduce the above
       
    11  * copyright notice, this list of conditions and the following disclaimer
       
    12  * in the documentation and/or other materials provided with the
       
    13  * distribution.
       
    14  *     * Neither the name of Google Inc. nor the names of its
       
    15  * contributors may be used to endorse or promote products derived from
       
    16  * this software without specific prior written permission.
       
    17  *
       
    18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
       
    19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
       
    20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
       
    21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
       
    22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
       
    23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
       
    24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
       
    25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
       
    26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
       
    27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
       
    28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
       
    29  */
       
    30 
       
    31 #include "config.h"
       
    32 #include "BoundObject.h"
       
    33 
       
    34 #include "V8Proxy.h"
       
    35 
       
    36 namespace WebKit {
       
    37 
       
    38 BoundObject::BoundObject(v8::Handle<v8::Context> context, void* v8This, const char* objectName)
       
    39     : m_objectName(objectName)
       
    40     , m_context(context)
       
    41     , m_v8This(v8This)
       
    42 {
       
    43     v8::Context::Scope contextScope(context);
       
    44     v8::Local<v8::FunctionTemplate> localTemplate = v8::FunctionTemplate::New(WebCore::V8Proxy::checkNewLegal);
       
    45     m_hostTemplate = v8::Persistent<v8::FunctionTemplate>::New(localTemplate);
       
    46     m_hostTemplate->SetClassName(v8::String::New(objectName));
       
    47 }
       
    48 
       
    49 BoundObject::~BoundObject()
       
    50 {
       
    51     m_hostTemplate.Dispose();
       
    52 }
       
    53 
       
    54 void BoundObject::addProtoFunction(const char* name, v8::InvocationCallback callback)
       
    55 {
       
    56     v8::Context::Scope contextScope(m_context);
       
    57     v8::Local<v8::Signature> signature = v8::Signature::New(m_hostTemplate);
       
    58     v8::Local<v8::ObjectTemplate> proto = m_hostTemplate->PrototypeTemplate();
       
    59     v8::Local<v8::External> v8This = v8::External::New(m_v8This);
       
    60     proto->Set(
       
    61         v8::String::New(name),
       
    62         v8::FunctionTemplate::New(
       
    63             callback,
       
    64             v8This,
       
    65             signature),
       
    66         static_cast<v8::PropertyAttribute>(v8::DontDelete));
       
    67 }
       
    68 
       
    69 void BoundObject::build()
       
    70 {
       
    71     v8::Context::Scope contextScope(m_context);
       
    72     v8::Local<v8::Function> constructor = m_hostTemplate->GetFunction();
       
    73     v8::Local<v8::Object> boundObject = WebCore::SafeAllocation::newInstance(constructor);
       
    74 
       
    75     v8::Handle<v8::Object> global = m_context->Global();
       
    76     global->Set(v8::String::New(m_objectName), boundObject);
       
    77 }
       
    78 
       
    79 } // namespace WebKit