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// Copyright 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.
//
// A class that receives IPC messages from an NPObjectProxy and calls the real
// NPObject.
#ifndef CHROME_PLUGIN_NPOBJECT_STUB_H__
#define CHROME_PLUGIN_NPOBJECT_STUB_H__
#include "base/ref_counted.h"
#include "chrome/common/ipc_channel.h"
class PluginChannelBase;
class WebPluginDelegateProxy;
struct NPIdentifier_Param;
struct NPObject;
struct NPVariant_Param;
// This wraps an NPObject and converts IPC messages from NPObjectProxy to calls
// to the object. The results are marshalled back. See npobject_proxy.h for
// more information.
class NPObjectStub : public IPC::Channel::Listener,
public IPC::Message::Sender {
public:
NPObjectStub(NPObject* npobject, PluginChannelBase* channel, int route_id);
~NPObjectStub();
// IPC::Message::Sender implementation:
bool Send(IPC::Message* msg);
// Called when the plugin widget that this NPObject came from is destroyed.
// This is needed because the renderer calls NPN_DeallocateObject on the
// window script object on destruction to avoid leaks.
void set_invalid() { valid_ = false; }
void set_proxy(WebPluginDelegateProxy* proxy) {
web_plugin_delegate_proxy_ = proxy;
}
private:
// IPC::Channel::Listener implementation:
void OnMessageReceived(const IPC::Message& message);
void OnChannelError();
// message handlers
void OnRelease(IPC::Message* reply_msg);
void OnHasMethod(const NPIdentifier_Param& name,
bool* result);
void OnInvoke(bool is_default,
const NPIdentifier_Param& method,
const std::vector<NPVariant_Param>& args,
IPC::Message* reply_msg);
void OnHasProperty(const NPIdentifier_Param& name,
bool* result);
void OnGetProperty(const NPIdentifier_Param& name,
NPVariant_Param* property,
bool* result);
void OnSetProperty(const NPIdentifier_Param& name,
const NPVariant_Param& property,
bool* result);
void OnRemoveProperty(const NPIdentifier_Param& name,
bool* result);
void OnInvalidate();
void OnEnumeration(std::vector<NPIdentifier_Param>* value,
bool* result);
void OnEvaluate(const std::string& script, IPC::Message* reply_msg);
void OnSetException(const std::string& message);
private:
NPObject* npobject_;
int route_id_;
scoped_refptr<PluginChannelBase> channel_;
// These variables are used to ensure that the window script object is not
// called after the plugin widget has gone away, as the frame manually
// deallocates it and ignores the refcount to avoid leaks.
bool valid_;
WebPluginDelegateProxy* web_plugin_delegate_proxy_;
};
#endif // CHROME_PLUGIN_NPOBJECT_STUB_H__
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