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

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

import java.awt.Frame;
import java.awt.Panel;
import java.awt.Button;
import java.awt.List;
import java.awt.Event;
import java.awt.BorderLayout;
import java.awt.Point;
import java.awt.Dimension;
import java.awt.Dialog;
import java.awt.Toolkit;
import java.awt.Insets;

import java.util.Vector;

import javax.swing.JButton;
import javax.swing.ImageIcon;

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

/* Purpose : Allow to reorder parts of construction class */

public class ConstVertPartReorderDialog extends Dialog implements ActionListener
{
	// Components
	private Button _ok,_cancel;
	private List _partList;
	private JButton _up,_down;
	private int _noOfItems;
	private Vector v;
	private boolean _changed=false;
//references
	private Editor _editor;
	private UVertex _vertex;

	// Constructor
	public ConstVertPartReorderDialog(Frame frame,String title,UVertex _v)
	{
		super(frame,title,true);
		_editor=(Editor)frame;
		String INSTALL_DIR=_editor.getInstallDir();
		setLayout( new BorderLayout() );
		_vertex=_v;
		
		// Create the Buttons
		Panel button_panel = new Panel();
		_ok=new Button("Ok");
		_cancel=new Button("Cancel");
		_ok.addActionListener(this);
		_cancel.addActionListener(this);
		button_panel.add(_ok);
		button_panel.add(_cancel);

		Panel arrow_panel = new Panel();
		arrow_panel.setLayout( new BorderLayout() );
		_up = new JButton(new ImageIcon(Toolkit.getDefaultToolkit().getImage(INSTALL_DIR+"/images/up.gif")));
		_up.setToolTipText("Up");
		_up.setMargin(new Insets(0,0,0,0));
		_up.addActionListener(this);

		_down = new JButton(new ImageIcon(Toolkit.getDefaultToolkit().getImage(INSTALL_DIR+"/images/down.gif")));
		_down.setToolTipText("Down");
		_down.setMargin(new Insets(0,0,0,0));
		_down.addActionListener(this);

		arrow_panel.add("North",_down);
		arrow_panel.add("South",_up);

		// Create the text area
		_partList = new List(5,false);

		
		// add the text area and the buttons to the window
		add("West",_partList);		
		add("East",arrow_panel);
		add("South",button_panel );

		pack();
// jdk 1.1 type window event handling
		addWindowListener(new TVAdapter()); // using inner class for window handling.


		v = new Vector();
		Document d =_editor.curDocument();
		if(_v instanceof UConstVertex)
		{
			for(int i=0;i<_v.get_outArcIdList().size();i++)
			{
				v.addElement((UID)_v.get_outArcIdList().elementAt(i));
				UEdge e = d.net().getArc(((UID)_v.get_outArcIdList().elementAt(i)));
				String to  = d.net().getNode(e.get_toVertex()).get_vertexname().get_name().toString();

				_partList.addItem(to);
			}
		}
		_noOfItems=_partList.getItemCount();
		if(_noOfItems != 0)
			_partList.select(0);
		if(_noOfItems<2)
		{
			_up.setEnabled(false);
			_down.setEnabled(false);
		}
	}
  

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

	public void setVisible(boolean status)
	{
		if(status)
		{
			_ok.requestFocus();
			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(status);
	}
	
// jdk 1.1 style event handling.
	public void actionPerformed(ActionEvent event)
	{

		Object source = event.getSource();
		if(source == _up)
		{
			int current = _partList.getSelectedIndex();
			if(current == 0)
				return;
			else
			{
				int next = current-1;
				String toBeMovedUp = _partList.getItem(current);
				String toBeMovedDown = _partList.getItem(next);
				_partList.replaceItem(toBeMovedUp,next);
				_partList.replaceItem(toBeMovedDown,current);
				_partList.deselect(current);
				_partList.select(next);
				Object o = v.elementAt(current);
				v.setElementAt(v.elementAt(next),current);
				v.setElementAt(o,next);
				_changed=true;
			}
		}
		else
		if(source == _down)
		{
			int current = _partList.getSelectedIndex();
			if(current == _noOfItems-1)
				return;
			else
			{
				int next = current+1;
				String toBeMovedDown = _partList.getItem(current);
				String toBeMovedUp = _partList.getItem(next);
				_partList.deselect(current);
				_partList.replaceItem(toBeMovedUp,current);
				_partList.replaceItem(toBeMovedDown,next);
				_partList.select(next);
				Object o = v.elementAt(current);
				v.setElementAt(v.elementAt(next),current);
				v.setElementAt(o,next);
				_changed=true;
			}
		}
		else
		if(source == _ok)
		{
			if(_changed)
			{
				_vertex.set_outArcIdList(v);
				_editor.curDocument().cdNeedsSaving(true);
			}
			close();
		}
		else
			close();
	}


// inner class VDAdapter

	class TVAdapter extends WindowAdapter
	{
		public void windowClosing(WindowEvent event)
		{
			close();
		}
	}
} /* end class TextView */