// File: ConstEdgeDialog.java
// Classes: ConstEdgeDialog
// Original Author: Kedar Patankar
// Date 11 Feb 1997

package uci.graphedit;

import java.awt.Label;
import java.awt.TextField;
import java.awt.List;
import java.awt.Button;
import java.awt.Event;
import java.awt.Frame;
import java.awt.Panel;
import java.awt.BorderLayout;
import java.awt.Color;

import gjt.DialogClient;
import gjt.GJTDialog;
import gjt.ButtonPanel;
import gjt.RowLayout;


public class ConstEdgeDialog extends GJTDialog 
{
	private TextField _vertex_name;
	private List _cardList;
	private Button _execute,_cancel;
	private String _name;
	private String _card;
	public ConstEdgeDialog(Frame f,DialogClient c,String t,String name,String card)
	{
		this(f,c,t);
		_name=name;
		_vertex_name.setText(name);
		_vertex_name.select(0,name.length());
		int index=0;
		if ("1".equals(card)) index = 0;
		else if ("0..1".equals(card)) index = 1;
		else if ("0..*".equals(card)) index = 2;
		else if ("1..*".equals(card)) index = 3;
		
		_cardList.select(index);
	}

	public ConstEdgeDialog(Frame frame,DialogClient client,String title)
	{ 
		super(frame,title,client,true);
		Label actionName= new Label("Edge Name ");
		Label cardinality=new Label("Cardinality");
		_vertex_name = new TextField(25);
		_cardList = new List();
		_execute = new Button("OK");
		_cancel = new Button("Cancel");

		Panel nameP = new Panel();
		nameP.setLayout(new BorderLayout());
		nameP.add("North",actionName);
		nameP.add("Center",_vertex_name);
		
		Panel cardP = new Panel();
		cardP.setLayout(new BorderLayout());
		cardP.add("North",cardinality);
		cardP.add("Center",_cardList);

		Panel textP = new Panel();
		textP.setLayout(new RowLayout());
		textP.add(nameP);
		textP.add(cardP);
		textP.setBackground(Color.lightGray);

		ButtonPanel buttonPanel = new ButtonPanel();
		buttonPanel.add(_execute);
		buttonPanel.add(_cancel);
		buttonPanel.setBackground(Color.lightGray);

		setLayout(new BorderLayout());
		add("Center",textP);
		add("South",buttonPanel);
		
		_cardList.addItem("1");
		_cardList.addItem("0..1");
		_cardList.addItem("0..*");
		_cardList.addItem("1..*");
		_cardList.select(0);
		pack();
	}
	
	public void show()
	{
		_vertex_name.requestFocus();
		super.show();
	}

	public boolean handleEvent(Event e)
	{
		switch(e.id)
		{
		case Event.WINDOW_DESTROY:
			close();
			return true;
		case Event.LIST_SELECT:
			return true;
		}
		return super.handleEvent(e);
	}

	public boolean action(Event e, Object what)
	{
		if (e.target == _cancel)
		{
			close();
			return true;
		}
		else
		if ((e.target == _execute)||(e.target==_vertex_name)) 
		{
			if (_vertex_name.getText().length() != 0)
			{
				hide();
				executeCommand(e);
				dispose();
				return true;
			}
		}
		return false;
	}

	public void close()
	{ 
		hide();
		dispose();
	}

	private void executeCommand(Event e)
	{
		_name=_vertex_name.getText();
		_card=_cardList.getSelectedItem();
		client.dialogDismissed(this);
	}

	public String get_edge_name() {return _name;}
	public String get_cardinality() {return _card;}

} /* end class ConstEdgeDialog */