#pragma once
/****************************************************************************
Copyright (c) 2006, Radon Labs GmbH
Copyright (c) 2011-2013,WebJet Business Division,CYOU
 
http://www.genesis-3d.com.cn

Permission is hereby granted, free of charge, to any person obtaining a copy
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/

#include "core/refcounted.h"
#include "core/ptr.h"
#include "messaging/message.h"
#include "messaging/handler.h"

//------------------------------------------------------------------------------
namespace Messaging
{
class Port : public Core::RefCounted
{
    __DeclareClass(Port);
public:
    /// override to register accepted messages
    virtual void SetupAcceptedMessages();
    /// attach a message handler to the port
    void AttachHandler(const GPtr<Handler>& h);
    /// remove a message handler from the port
    void RemoveHandler(const GPtr<Handler>& h);
    /// remove all message handler from the port
    void RemoveAllHandlers();
    /// return number of handlers attached to the port
    SizeT GetNumHandlers() const;
    /// get a message handler by index
    const GPtr<Handler>& GetHandlerAtIndex(IndexT i) const;
    /// send a message to the port
    virtual void Send(const GPtr<Message>& msg);
	/// get the array of accepted messages (sorted)
    const Util::Array<const Id*>& GetAcceptedMessages() const;    
    /// return true if port accepts this msg
    bool AcceptsMessage(const Id& msgId) const;
    /// handle a single accepted message
    virtual void HandleMessage(const GPtr<Messaging::Message>& msg);

protected:
    /// register a single accepted message
    void RegisterMessage(const Id& msgId);

private:
    Util::Array<GPtr<Handler> > handlers;
    Util::Array<const Id*> acceptedMessageIds;
};

//------------------------------------------------------------------------------
/**
*/
inline
SizeT
Port::GetNumHandlers() const
{
    return this->handlers.Size();
}

//------------------------------------------------------------------------------
/**
*/
inline
void
Port::RegisterMessage(const Id& msgId)
{
    // ignore duplicate message ids (may happen when derived classes
    // process the same messages)
    if (InvalidIndex == this->acceptedMessageIds.BinarySearchIndex(&msgId))
    {
        this->acceptedMessageIds.InsertSorted(&msgId);
    }
}

//------------------------------------------------------------------------------
/**
*/
inline
const Util::Array<const Id*>&
Port::GetAcceptedMessages() const
{
    return this->acceptedMessageIds;
}

//------------------------------------------------------------------------------
/**
*/
inline
const GPtr<Handler>&
Port::GetHandlerAtIndex(IndexT i) const
{
    return this->handlers[i];
}

//------------------------------------------------------------------------------
/**
*/
inline
bool 
Port::AcceptsMessage(const Id& msgId) const
{
    return (InvalidIndex != this->acceptedMessageIds.FindIndex(&msgId));
}

} // namespace Messaging
//------------------------------------------------------------------------------