package testspaddy;

import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.List;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.SwingWorker;

/**
 *
 * @author Paddy
 */
public class myJFrame extends JFrame implements ActionListener {

	private JLabel jlab = null;
	private JButton jbtn = null;
	private JProgressBar jpb = null;
	// Gere la duree de ma longue tache (repete un processus long un certain nombre de fois).
	// Cette variable est utilisee notamment pour definir la valeur maxi de la progress bar
	private int times = 10;

	public myJFrame() {
		super();
		build();
	}

	public void build() {
		Dimension size = new Dimension(300, 80);

		this.setPreferredSize(size);
		this.setResizable(false);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		jbtn = new JButton("Launch");
		jbtn.addActionListener(this);

		jpb = new JProgressBar();
		jpb.setMaximum(times);
		jpb.setStringPainted(true);

		JPanel jpRight = new JPanel(new GridLayout(2, 1));
		jpRight.add(jbtn);
		jpRight.add(jpb);

		this.add(jpRight);
		this.pack();
	}

	@Override
	public void actionPerformed(ActionEvent e) {

		// C'est la que ca se joue...
		// Quand on clique sur le bouton (j'ai supprime les tests pour plus de clarte)
		SwingWorker worker = new SwingWorker() {

			@Override
			protected Object doInBackground() throws Exception {

				// Cree une instance de longue tache
				final LongTask lt = new LongTask(times);

				// Ce premier thread lancera l'execution de la longue tache
				Thread tLaunch = new Thread(new Runnable() {

					public void run() {
						lt.longLaunch();
					}
				});

				// Ce second thread verifiera toutes les 100ms la progression de la longue tache
				Thread tGetProgress = new Thread(new Runnable() {

					public void run() {
						while (lt.isOver() == false) {
							publish(lt.getProgress());
							try {
								Thread.sleep(100);
							} catch (Exception e) {
								// ...
							}
						}
						
						publish(lt.getProgress());
					}
				});

				tLaunch.start();
				tGetProgress.start();

				tLaunch.join();
				tGetProgress.join();

				return null;
			}

			@Override
			protected void process(List progress) {
				// Recupere l'avancement et met a jour l'interface (progress bar)
				Integer currentValue = (Integer) progress.get(0);
				jpb.setValue(currentValue);
			}
		};
		worker.execute();
	}
}