/**
Creates the internal frame for opening a site and displaying its information

@author Travis Zimmerman
@version 1.0

File Name: DeleteSiteInternalFrame.java
*/

import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.util.ArrayList;

public class DeleteSiteInternalFrame extends JInternalFrame
{
	public DeleteSiteInternalFrame()
	{
		super("Delete Site", 
              true, //resizable
              true, //closable
              true, //maximizable
              true);//iconifiable
		
		try
		{
			UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
		}
		catch(Exception e)
		{
			System.out.println("Error setting native LAF: " + e);
		}
		  
		JLabel header = new JLabel("Delete Site");
		header.setForeground( Color.black );
		header.setFont( new Font( "courier", Font.BOLD, 24 ));
		JPanel headerPanel = new JPanel();
		headerPanel.add(header);
		
		mySites = new ArrayList();
		final File sitesFile = new File("sites.tez");

		//read in all the sites from the file
		if (sitesFile.exists())
		{
			try
			{
				ObjectInputStream in = new ObjectInputStream(new FileInputStream(sitesFile));
				mySites = (ArrayList)in.readObject();
				in.close();
			}
			catch (java.io.FileNotFoundException e) {}
			catch (java.io.IOException e) {}
			catch (java.lang.ClassNotFoundException e) {}
		}
		//else put something in the menu about no existing sites
		
		
		siteChooser = new JComboBox();
		for (int i = 0; i < mySites.size(); i++)
			siteChooser.addItem( ((Site)mySites.get(i)).getAddress() );
		
		deleteButton = new JButton("Delete");
		cancelButton = new JButton("Cancel");
		
		JButton blankButton = new JButton();
		JPanel blankPanel = new JPanel();
		blankPanel.add(siteChooser);
		blankPanel.add(blankButton);
		blankButton.setVisible(false);
		
		JPanel siteChooserPanel = new JPanel();
		siteChooserPanel.setLayout( new GridLayout(2, 1) );
		siteChooserPanel.add(siteChooser);
		siteChooserPanel.add(blankPanel);
		
		JPanel buttonPanel = new JPanel();
		buttonPanel.setLayout( new GridLayout(2, 1) );
		buttonPanel.add(deleteButton);
		buttonPanel.add(cancelButton);
		
		
		JPanel mainPanel = new JPanel();
		mainPanel.setLayout( new GridLayout(1, 2, 20, 20) );
		mainPanel.add(siteChooserPanel);
		mainPanel.add(buttonPanel);
		
		
		getContentPane().add(mainPanel, BorderLayout.CENTER);
		
		setSize(WIDTH, HEIGHT);
		setLocation(OFFSET, OFFSET);
		
		
		//-----Button Listeners & Handlers-----
		class DeleteButtonListener implements ActionListener
		{
			public void actionPerformed(ActionEvent event)
			{
				for (int i = 0; i < mySites.size(); i++)
					if ( ( ((Site)mySites.get(i)).getAddress() ).equals( (String)siteChooser.getSelectedItem() ) )
						currentSelection = i;
				
				//remove the selected site from the array
				mySites.remove(currentSelection);
				
				//save all the sites back to the file
				try
				{
					ObjectOutputStream out = new ObjectOutputStream( new FileOutputStream(sitesFile) );
					out.writeObject(mySites);
					out.close();
				}
				catch (java.io.FileNotFoundException e) {}
				catch (java.io.IOException e) {}
				
				try
				{
					setClosed(true);
				}
				catch (java.beans.PropertyVetoException e) {}
				
			}
		}

		DeleteButtonListener myDeleteButtonListener = new DeleteButtonListener();
		deleteButton.addActionListener(myDeleteButtonListener);
		
		class CancelButtonListener implements ActionListener
      {
         public void actionPerformed(ActionEvent event)
         {
				try
				{
					setClosed(true);
				}
				catch (java.beans.PropertyVetoException e) {}
			}
      };

      CancelButtonListener myCancelButtonListener = new CancelButtonListener();
      cancelButton.addActionListener(myCancelButtonListener);
		
		
		
	}
	
	//instance fields
	ArrayList mySites;
	int currentSelection;
	
	JComboBox siteChooser;
	
	JButton deleteButton;
	JButton cancelButton;

	private final int WIDTH = 510;
	private final int HEIGHT = 80;
	private final int OFFSET = 5;

}