/*
    Copyright (C) 2008 Hans Baier 

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    $Id$
*/

#include <sigc++/sigc++.h>
#include <boost/shared_ptr.hpp>

#include "midi_patch_manager.h"
#include "pbd/file_utils.h"
#include "ardour/session.h"
#include "ardour/session_directory.h"

using namespace std;
using namespace sigc;
using namespace ARDOUR;
using namespace MIDI;
using namespace MIDI::Name;
using namespace PBD;
using namespace PBD::sys;

MidiPatchManager* MidiPatchManager::_manager = 0;

void
MidiPatchManager::set_session (Session& s)
{
	_session = &s;
	_session->GoingAway.connect (mem_fun (*this, &MidiPatchManager::drop_session));
	
	refresh();
}

void
MidiPatchManager::refresh()
{
	_documents.clear();
	
	path path_to_patches = _session->session_directory().midi_patch_path();
	
	if(!exists(path_to_patches)) {
		return;
	}
	
	assert(is_directory(path_to_patches));
	
	Glib::PatternSpec pattern(Glib::ustring("*.midnam"));
	vector<path> result;
	
	find_matching_files_in_directory(path_to_patches, pattern, result);
	
	for(vector<path>::iterator i = result.begin(); i != result.end(); ++i) {
		boost::shared_ptr<MIDINameDocument> document(new MIDINameDocument(i->to_string()));
		_documents.push_back(document);
	}
}

void
MidiPatchManager::drop_session ()
{
	_session = 0;
	_documents.clear();
}