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// Copyright (c) 2008, Google Inc.
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
// 
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include "config.h"
#include "ScriptController.h"

#include "bindings/npruntime.h"
#include "c_instance.h"

#undef LOG // glue defines its own LOG macro
#include "webkit/glue/webplugin_impl.h"

namespace WebCore {

JSInstanceHandle ScriptController::createScriptInstanceForWidget(Widget* widget)
{
    ASSERT(widget != 0);

    if (widget->isFrameView())
        return JSInstanceHolder::EmptyInstance();

    // Note:  We have to trust that the widget passed to us here
    // is a WebPluginImpl.  There isn't a way to dynamically verify
    // it, since the derived class (Widget) has no identifier.
    WebPluginContainer* container = static_cast<WebPluginContainer*>(widget);
    if (!container)
        return JSInstanceHolder::EmptyInstance();

    NPObject* npObject = container->GetPluginScriptableObject();
    if (!npObject)
        return JSInstanceHolder::EmptyInstance();

    // Register 'widget' with the frame so that we can teardown
    // subobjects when the container goes away.
    RefPtr<JSC::Bindings::RootObject> root = createRootObject(widget);
     RefPtr<JSC::Bindings::Instance> instance = 
        JSC::Bindings::CInstance::create(npObject, root.release());
    // GetPluginScriptableObject returns a retained NPObject.  
    // The caller is expected to release it.
    NPN_ReleaseObject(npObject);
    return instance.release();
}

}  // namespace WebCpre