package Gui;

import Controller.*;

import java.awt.*;
import java.awt.event.*;
import javax.swing.AbstractButton;
import javax.swing.JButton;
import java.util.*;
import javax.swing.*;

public class SimListMenu implements ActionListener {
    
    private JMenu  listMenu;
    private Vector simVector;
    private ButtonGroup buttonGroup;

    
    // The Controller
    private StructureApp app;
    
    public SimListMenu(StructureApp app){
	this.app = app;
	listMenu = new JMenu("Parameter Set List");
    }

    public JMenu getMenu(){
	return listMenu;
    }
    
    // init the list menu with single "empty" disabled item
    public void initMenu(){
	JMenuItem emptyItem = new JMenuItem(" (Empty) ");
	emptyItem.setEnabled(false);
	listMenu.add(emptyItem);
    }

    
    // restore the list menu to the init state
    public void emptyMenu(){
	listMenu.removeAll();
	simVector = null;
	buttonGroup = null;
	initMenu();
	Runtime.getRuntime().gc();
	Runtime.getRuntime().runFinalization();
    }
    
    public void loadMenu(String[] sims){
	if(sims.length == 0)
	    return;
	
	for(int i=0; i<sims.length; i++)
	    appendMenuItem(sims[i], false);
    }

    public void appendMenuItem(String simName, boolean active){
	
	if(simVector == null)
	    simVector = new Vector();
	if(buttonGroup == null){
	    buttonGroup = new ButtonGroup();
	    listMenu.removeAll();
	}

	JCheckBoxMenuItem newSim = new JCheckBoxMenuItem(simName);
	newSim.setActionCommand(simName);
	newSim.addActionListener(this);
	
	// add to the collection
	simVector.add(newSim);
	buttonGroup.add(newSim);
	listMenu.add(newSim);
	
	// set the selection mode
	newSim.setSelected(active);
	return;
    }
    
    public void updateMenu(String simName){
	boolean flag = false;
	for(int i=0;i<simVector.size();i++){
	    JCheckBoxMenuItem mi = (JCheckBoxMenuItem)simVector.elementAt(i);
	    if(mi.getActionCommand().equals(simName)){
		mi.setSelected(true);
		return;
	    }
	}
	
    }
    
    public void removeMenuItem(String simName){
	for(int i=0;i<simVector.size();i++){
	    JCheckBoxMenuItem mi = (JCheckBoxMenuItem)simVector.elementAt(i);
	    if(mi.getActionCommand().equals(simName)){
		listMenu.remove(mi);
		return;
	    }
	}
    }
    

    public void setActiveFlag(String simName, boolean b){
	for(int i=0;i<simVector.size();i++){
	    JCheckBoxMenuItem mi = (JCheckBoxMenuItem)simVector.elementAt(i);
	    if(mi.getActionCommand().equals(simName)){
		mi.setSelected(b);
		return;
	    }
	}
    }
    
    public void actionPerformed(ActionEvent e){
	String simName = e.getActionCommand();
	app.loadSimObj(simName);
	return;
    }
	
    
}