/* This file is part of Machina.
 * Copyright 2007-2011 David Robillard <http://drobilla.net>
 *
 * Machina 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 3 of the License, or
 * (at your option) any later version.
 *
 * Machina 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 Machina.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <fstream>
#include <iostream>
#include <string>

#include <gtkmm.h>

#include "machina_config.h"

class WidgetFactory
{
public:
	static Glib::RefPtr<Gtk::Builder> create() {
		Glib::RefPtr<Gtk::Builder> xml;

		// Check for the .ui file in current directory
		std::string ui_filename = "./machina.ui";
		std::ifstream fs(ui_filename.c_str());
		if (fs.fail()) { // didn't find it, check MACHINA_DATA_DIR
			fs.clear();
			ui_filename = MACHINA_DATA_DIR;
			ui_filename += "/machina.ui";

			fs.open(ui_filename.c_str());
			if (fs.fail()) {
				std::cerr << "Unable to find machina.ui in current directory or "
					<< MACHINA_DATA_DIR << "." << std::endl;
				exit(EXIT_FAILURE);
			}
			fs.close();
		}

		try {
			xml = Gtk::Builder::create_from_file(ui_filename);
		} catch(const Gtk::BuilderError& ex) {
			std::cerr << ex.what() << std::endl;
			throw ex;
		}

		return xml;
	}
};