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// Copyright (c) 2010 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.
//
// Common base class for funnels of Chrome Extension events that originate
// from the BHO.
#ifndef CEEE_IE_PLUGIN_BHO_EVENTS_FUNNEL_H_
#define CEEE_IE_PLUGIN_BHO_EVENTS_FUNNEL_H_
#include <windows.h>
#include "base/basictypes.h"
class Value;
// Defines a base class for sending events to the Broker.
class EventsFunnel {
protected:
// @param keep_broker_alive If true broker will be alive during
// lifetime of this funnel, otherwise only during SendEvent.
explicit EventsFunnel(bool keep_broker_alive);
virtual ~EventsFunnel();
// Send the given event to the Broker.
// @param event_name The name of the event.
// @param event_args The arguments to be sent with the event.
// protected virtual for testability...
virtual HRESULT SendEvent(const char* event_name, const Value& event_args);
private:
// If true constructor/destructor of class increments/decrements ref counter
// of broker thread. Otherwise SendEvent does it for every event.
const bool keep_broker_alive_;
DISALLOW_COPY_AND_ASSIGN(EventsFunnel);
};
#endif // CEEE_IE_PLUGIN_BHO_EVENTS_FUNNEL_H_
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