/*
 Eteria IRC Client, an RFC 1459 compliant client program written in Java.
 Copyright (C) 2000  Javier Kohen <jkohen at tough.com>
 
 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
 
 package ar.com.jkohen.util;
 
 import java.util.*;
 import java.io.InputStream;
 import java.io.IOException;
 
 
 public abstract class ConfigurationProperties extends Observable
 {
 	protected Properties properties;
 
 	public ConfigurationProperties()
 	{
 		properties = new Properties();
 	}
 
 	public ConfigurationProperties(Properties defaults)
 	{
 		properties = defaults;
 	}
 	
 	public Object get(String key)
 	{
 		return(properties.get(key));
 	}
 
 	public String getProperty(String key)
 	{
 		return(properties.getProperty(key));
 	}
 	
 	public Enumeration keys()
 	{
 		return(properties.keys());
 	}
 
 	public boolean getBoolean(String key)
 	{
 		String val = properties.getProperty(key);
 
 		if (val.equals("0") || val.equals("false") || val.equals("no") || val.equals("off"))
 		{
 			return false;
 		}
 		else if (val.equals("1") || val.equals("true") || val.equals("yes") || val.equals("on"))
 		{
 			return true;
 		}
 
 		throw new MissingResourceException("Value from '" + key + "' isn't boolean", getClass().getName(), key);
 	}
 
 	public int getInt(String key)
 	{
 		String val = properties.getProperty(key);
 
 		try
 		{
 			return Integer.parseInt(val);
 		}
 		catch (NumberFormatException e)
 		{
 			throw new MissingResourceException("Value from '" + key + "' isn't integer", getClass().getName(), key);
 		}
 	}
 
 	public String getString(String key)
 	{
 		return properties.getProperty(key);
 	}
 
 	public void setBoolean(String key, boolean val)
 	{
 		if (val == getBoolean(key))
 			return;
 
 		properties.put(key, String.valueOf(val));
 		setChanged();
 		notifyObservers(key);
 	}
 
 	public void setInt(String key, int val)
 	{
 		if (val == getInt(key))
 			return;
 
 		properties.put(key, String.valueOf(val));
 		setChanged();
 		notifyObservers(key);
 	}
 
 	public void setString(String key, String val)
 	{
 		if (val.equals(getString(key)))
 			return;
 
 		properties.put(key, val);
 		setChanged();
 		notifyObservers(key);
 	}
 	
 	public abstract void write(String s) throws IOException;
 }