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#ifndef __ardour_ui_midi_channel_selector_h__
#define __ardour_ui_midi_channel_selector_h__

#include "gtkmm/table.h"
#include "sigc++/trackable.h"
#include "gtkmm/togglebutton.h"
#include "gtkmm/label.h"
#include <set>

class MidiChannelSelector : public Gtk::Table
{
public:
	MidiChannelSelector();
	virtual ~MidiChannelSelector() = 0;
	
protected:
	virtual void button_toggled(Gtk::ToggleButton *button, uint8_t button_nr) = 0;
	Gtk::Label        _button_labels[4][4];
	Gtk::ToggleButton _buttons[4][4];
};

class SingleMidiChannelSelector : public MidiChannelSelector
{
public:
	SingleMidiChannelSelector(uint8_t active_channel = 0);
	
	const uint8_t get_active_channel() const { return _active_channel; }
	
	sigc::signal<void, uint8_t> channel_selected;
	
protected:
	virtual void button_toggled(Gtk::ToggleButton *button, uint8_t button_nr);

	Gtk::ToggleButton *_active_button;
	uint8_t _active_channel;
};

class MidiMultipleChannelSelector : public MidiChannelSelector
{
public:
	const std::set<uint8_t>& get_selected_channels() const { return _selected_channels; }

protected:
	virtual void button_toggled(Gtk::ToggleButton *button, uint8_t button_nr);
	
	std::set<uint8_t> _selected_channels;
};

#endif /*__ardour_ui_midi_channel_selector_h__*/