import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.util.*;
import java.io.*;


public class SongsAreUsMain extends JFrame {

	// Store the model as a vector of email buddies

	MusicStore musicStore; //model object the represents the collection of songs

	private Song		    selectedSong; //song currently selected in the GUI list
	private Song            songBeingEdited; //song being edited by the dialog;

	// Store the view that contains the components
	SongListPanel 		view; //panel of GUI components for the main window

	// Here are the component listeners
	ActionListener			theAddButtonListener;
	ActionListener			theRemoveButtonListener;
	ListSelectionListener	songListSelectionListener;

	// Here is the default constructor
	public SongsAreUsMain(String title) {
		super(title);

		musicStore = new MusicStore();
		System.out.println(musicStore);

		selectedSong = null;


		// Make the main window view panel
		add(view = new SongListPanel());

		// Add a listener for the add button
		theAddButtonListener = new ActionListener() {
			public void actionPerformed(ActionEvent event) {
				addSong();
			}};

		// Add a listener for the revove button
		theRemoveButtonListener = new ActionListener() {
			public void actionPerformed(ActionEvent event) {
				removeSong();
			}};


		// Add a listener to allow selection of buddies from the list
		songListSelectionListener = new ListSelectionListener() {
			public void valueChanged(ListSelectionEvent event) {
				selectSong();
			}};



        setDefaultCloseOperation(EXIT_ON_CLOSE);
		setSize(600,300);

		// Start off with everything updated properly to reflect the model state
		update();
	}

	// Enable all listeners
	private void enableListeners() {
		view.getAddButton().addActionListener(theAddButtonListener);
		view.getRemoveButton().addActionListener(theRemoveButtonListener);
		view.getSongList().addListSelectionListener(songListSelectionListener);
	}

	// Disable all listeners
	private void disableListeners() {
		view.getAddButton().removeActionListener(theAddButtonListener);
		view.getRemoveButton().removeActionListener(theRemoveButtonListener);
		view.getSongList().removeListSelectionListener(songListSelectionListener);
	}


	// This is called when the user clicks the add button
	private void addSong() {
		selectedSong = null;
		songBeingEdited = new Song();

		// Now bring up the dialog box
		SongDetailsDialog dialog = new SongDetailsDialog(this, this, "Song Details Dialog", true, songBeingEdited);
		dialog.setVisible(true);
	}

	// This is called when the user clicks the remove button
	private void removeSong() {
		// Remove the currently selected song from the list
		 Song aSong = (Song)(view.getSongList().getSelectedValue());

		if (aSong != null) {
			musicStore.removeSong(aSong);
			update();
			selectSong();
		}
	}

	// This is called when the user selects a song from the list
	private void selectSong() {
		selectedSong = (Song)(view.getSongList().getSelectedValue());

		update();
	}



	// Called when the dialog box is closed with the Ok button

	//DialogClient Iterface Methods
	//MISSING CODE





	// Update the remove button
	private void updateRemoveButton() {
		view.getRemoveButton().setEnabled(selectedSong != null);
	}

	// Update the list
	private void updateList() {
		boolean		foundSelected = false;

        view.getSongList().setListData(musicStore.getCopyOfSongs());

		if (selectedSong != null)
			view.getSongList().setSelectedValue(selectedSong, true);
	}

	// Update the components
	private void update() {
		disableListeners();
		updateList();
		updateRemoveButton();
		enableListeners();
	}

	// Code that starts the application
	public static void main(String args[]) {
		SongsAreUsMain frame =  new SongsAreUsMain("Songs Are Us Music Store");
		frame.setVisible(true);
	}
}