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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// A class that receives IPC messages from an NPObjectProxy and calls the real
// NPObject.
#ifndef CONTENT_COMMON_NPOBJECT_STUB_H_
#define CONTENT_COMMON_NPOBJECT_STUB_H_
#include <vector>
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "content/common/npobject_base.h"
#include "googleurl/src/gurl.h"
#include "ipc/ipc_listener.h"
#include "ipc/ipc_sender.h"
struct NPObject;
namespace content {
class NPChannelBase;
struct NPIdentifier_Param;
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::Listener,
public IPC::Sender,
public base::SupportsWeakPtr<NPObjectStub>,
public NPObjectBase {
public:
NPObjectStub(NPObject* npobject,
NPChannelBase* channel,
int route_id,
int render_view_id,
const GURL& page_url);
virtual ~NPObjectStub();
// Schedules tear-down of this stub. The underlying NPObject reference is
// released, and further invokations form the IPC channel will fail once this
// call has returned. Deletion of the stub is deferred to the main loop, in
// case it is touched as the stack unwinds. DeleteSoon() is safe to call
// more than once, until control returns to the main loop.
void DeleteSoon();
// IPC::Sender implementation:
virtual bool Send(IPC::Message* msg) OVERRIDE;
// NPObjectBase implementation.
virtual NPObject* GetUnderlyingNPObject() OVERRIDE;
virtual IPC::Listener* GetChannelListener() OVERRIDE;
private:
// IPC::Listener implementation:
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
virtual void OnChannelError() OVERRIDE;
// 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,
IPC::Message* reply_msg);
void OnRemoveProperty(const NPIdentifier_Param& name,
bool* result);
void OnInvalidate();
void OnEnumeration(std::vector<NPIdentifier_Param>* value,
bool* result);
void OnConstruct(const std::vector<NPVariant_Param>& args,
IPC::Message* reply_msg);
void OnEvaluate(const std::string& script, bool popups_allowed,
IPC::Message* reply_msg);
private:
NPObject* npobject_;
scoped_refptr<NPChannelBase> channel_;
int route_id_;
int render_view_id_;
// The url of the main frame hosting the plugin.
GURL page_url_;
};
} // namespace content
#endif // CONTENT_COMMON_NPOBJECT_STUB_H_
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