jganttmain.java

Owing to the applet Gantt chart source yard, already Chinese melt, Gantt chart can demonstrate a Chi

/**
 *   Copyright 2004 Carlos Silva A.
 * 
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License. 
 *   You may obtain a copy of the License at  
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 * 
 */
package jgantt;

import java.awt.Dimension;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;

import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.plaf.metal.DefaultMetalTheme;
import javax.swing.plaf.metal.MetalLookAndFeel;

import jgantt.model.IOManager;
import jgantt.model.Project;
import jgantt.view.GanttActionListener;
import jgantt.view.MainFrame;

/**
 * Aplicacion principal, lee la linea de comandos y carga un archivo si lo hay.
 * 
 * @version $Header: /cvs/java/App_JGantt/source/jgantt/JGanttMain.java,v 1.5
 *          2004/12/05 04:06:45 csilva Exp $
 * @author Carlos Silva
 */
public class JGanttMain implements Runnable {
	String fileName = null;

	/**
	 * Crea una ventana de gantt, editando un cierto archivo.
	 * 
	 * @param fn
	 */
	public JGanttMain(String fn) {
		fileName = fn;
	}

	/**
	 * Crea la ventana de Gantt y comienza la ejecucion... Esta funcion se llama
	 * desde el thread de swing.
	 */
	public void run() {
		try {
			JFrame mainFrame = null;
			if (fileName == null)
				mainFrame = new MainFrame();
			else {
				File source = new File(fileName);
				Project p = IOManager.loadFrom(source);
				mainFrame = new MainFrame(p, source);
			}
			mainFrame.pack();
			mainFrame.setSize(new Dimension(680, 350));
			mainFrame.setVisible(true);

			
			File config = getConfigFile();			
			if (!config.exists()) {
				GanttActionListener.cmdHelpHints();
				config.createNewFile();				
			}
			
		} catch (Exception e) {
			JOptionPane.showMessageDialog(null, e.getMessage(),
					"Excepcion al iniciar jGantt", JOptionPane.ERROR_MESSAGE);
			System.exit(1);
		}
	}
    
    public static File getConfigFile(){
        String userDir = System.getProperty("user.home");
        return new File(userDir, ".lgantt.properties");  
    }
    static Properties properties=null;
    
    public static String getProperty(String name) throws IOException{
        if (properties==null){
            properties=new Properties();
            File f = getConfigFile();
            if (f.exists()){
                FileInputStream fis = new FileInputStream(f);
                properties.load(fis);
                fis.close();
            }
        }
        return properties.getProperty(name);
    }
    /**
     * Saves the config into the config properties file
     * @throws IOException
     */
    public static void saveConfig() throws IOException{
        if (properties==null)return;
        File f = getConfigFile();
        FileOutputStream out = new FileOutputStream(f);
        System.out.println("saveConfig=="+f.getPath()+f.getName());
        properties.store(out,"");
        out.close();
    }
    /**
     * Agrega un archivo abierto recientemente a la configuracion
     * TODO: Verificar que no sea igual a otro archivo ya abierto.
     * @param f
     * @throws IOException 
     */
    public static void addLastUsed(File f) throws IOException{
        StringBuffer lru = new StringBuffer(properties.getProperty("last.used"));
        int l = lru.length();
        if (l<5){
            lru.append( "abcdefghij".charAt(l));
        }
        lru.insert(0, lru.charAt(l-1));
        lru.setLength(l);
        properties.setProperty("last.used", lru.toString());
        properties.setProperty("lru."+lru.charAt(0), f.getAbsolutePath());  
        saveConfig();
    }
    
    
    

	/**
	 * Funcion principal utiliza MetalLookAndFeel.
	 * 
	 * @param args
	 * @throws Exception
	 */
	public static void main(String[] args) throws Exception {
		try {
			MetalLookAndFeel.setCurrentTheme(new DefaultMetalTheme());
			UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
			// UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
			// UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel");
		} catch (Exception e) {
			System.err.println("FATAL: Error al Cargar LookAndFeel: "
					+ e.toString());
			System.exit(1);
		}
		String fileName = null;
		for (int i = 0; i < args.length; i++) {
			if (!args[i].startsWith("-")) {
				fileName = args[i];
			}
		}

		SwingUtilities.invokeLater(new JGanttMain(fileName));
	}
}