/*******************************************************************************

* CLI - A simple command line interface.

* Copyright (C) 2016 Daniele Pallastrelli

*

* Boost Software License - Version 1.0 - August 17th, 2003

*

* Permission is hereby granted, free of charge, to any person or organization

* obtaining a copy of the software and accompanying documentation covered by

* this license (the "Software") to use, reproduce, display, distribute,

* execute, and transmit the Software, and to prepare derivative works of the

* Software, and to permit third-parties to whom the Software is furnished to

* do so, all subject to the following:

*

* The copyright notices in the Software and this entire statement, including

* the above license grant, this restriction and the following disclaimer,

* must be included in all copies of the Software, in whole or in part, and

* all derivative works of the Software, unless such copies or derivative

* works are solely in the form of machine-executable object code generated by

* a source language processor.

*

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

* FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT

* SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE

* FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,

* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

* DEALINGS IN THE SOFTWARE.

******************************************************************************/

#ifndef INPUTDEVICE_H_

#define INPUTDEVICE_H_

#include <functional>

#include <string>

#include <boost/asio.hpp>

namespace cli

{

enum class KeyType { ascii, up, down, left, right, backspace, canc, home, end, ret, ignored };

class InputDevice

{

public:

using Handler = std::function< void( std::pair<KeyType,char> ) >;

explicit InputDevice(boost::asio::io_service& ios) : ioService(ios) {}

virtual ~InputDevice() = default;

template <typename H>

void Register(H&& h) { handler = std::forward<H>(h); }

protected:

void Notify(std::pair<KeyType,char> k)

{

ioService.post( [this,k](){ if (handler) handler(k); } );

}

private:

boost::asio::io_service& ioService;

Handler handler;

};

} // namespace cli

#endif // INPUTDEVICE_H_