// File: AlarmDialog.java
// Classes: AlarmDialog
// Author: Kedar Patankar

package edu.neu.ccs.demeter.tools.apstudio.graphedit;

import java.awt.Button;
import java.awt.Frame;
import java.awt.Label;
import java.awt.BorderLayout;
import java.awt.Event;
import java.awt.Font;
import java.awt.Color;
import java.awt.Dialog;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.Panel;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.WindowEvent;
import java.awt.event.WindowAdapter;

/* Purpose : Question dialog */

public class AlarmDialog extends Dialog implements ActionListener 
{
	private Button _yes,_no,_cancel;
	private String _choice,_defaultFocus;
	
	public AlarmDialog(Frame frame,String title,String message1,String buttonString,String defaultButton) 
	{
		this( frame,title,message1,null,buttonString,defaultButton) ;
	}

	public AlarmDialog(Frame frame,String title,String message1,String message2,String buttonString,String defaultButton) 
	{ 
		super(frame,title,true);
		_defaultFocus = defaultButton;
		setLayout(new BorderLayout());
		Label label1,label2;
		label1=new Label(message1,Label.CENTER);
		label1.setFont(new Font("Times Roman",Font.BOLD,12));
		add("North",label1);
		if(message2!=null)
		{
			label2=new Label(message2,Label.CENTER);
			add("Center",label2);
		}
		Panel buttonPanel = new Panel();
		if(buttonString.indexOf('Y')!=-1)
		{
			buttonPanel.add(_yes = new Button("Yes"));
			_yes.addActionListener(this);
		}
		if(buttonString.indexOf('N')!=-1)
		{
			buttonPanel.add(_no = new Button("No"));
			_no.addActionListener(this);
		}
		if(buttonString.indexOf('C')!=-1)
		{
			buttonPanel.add(_cancel=new Button("Cancel"));
			_cancel.addActionListener(this);
		}

		buttonPanel.setBackground(Color.lightGray);
		add("South",buttonPanel);
		pack();
		setBackground(Color.lightGray);
// jdk 1.1 type window event handling
		addWindowListener(new ADAdapter()); // using inner class for window handling.
	}

	
	public void setVisible(boolean status)
	{
		if(status)
		{
			Dimension frameSize = getParent().getSize();
			Point     frameLoc  = getParent().getLocation();
			Dimension mySize    = getSize();
			int       x,y;

			x = frameLoc.x + (frameSize.width/2) -(mySize.width/2); 
			y = frameLoc.y + (frameSize.height/2)-(mySize.height/2); 
			setBounds(x,y,getSize().width,getSize().height);
			super.setVisible(true);

//			if(_defaultFocus.equals("Y"))
//				_yes.requestFocus();
//			else
//			if(_defaultFocus.equals("N"))
				_no.requestFocus();
//			else
//			if(_defaultFocus.equals("C"))
//				_cancel.requestFocus();
		}
		else
			super.setVisible(false);
	}

// jdk 1.1 style event handling. action converted to actionPerformed
	public void actionPerformed(ActionEvent event)
	{
		Object source = event.getSource();
		if(source == _no)
			_choice="NO";
		else
		if(source == _yes)
			_choice="YES";
		else
			_choice="CANCEL";
		close();
	}

	private void close() { setVisible(false); dispose(); }

	public String getChoice(){return _choice;}

// inner class VDAdapter
	class ADAdapter extends WindowAdapter
	{
		public void windowClosing(WindowEvent event)
		{
			_choice = "CANCEL";
			close();
		}
	}
} /* end class AlarmDialog */