source: src/main/java/genius/gui/progress/MultiPartyTournamentProgressUI.java@ 345

package genius.gui.progress;

import java.awt.BorderLayout;
import java.awt.Panel;

import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JScrollPane;
import javax.swing.JTable;

import genius.core.events.NegotiationEvent;
import genius.core.events.TournamentEndedEvent;
import genius.core.events.TournamentSessionStartedEvent;
import genius.core.listener.Listener;

@SuppressWarnings("serial")
public class MultiPartyTournamentProgressUI extends Panel implements Listener<NegotiationEvent> {

        Progress progress = new Progress();

        DataKeyTableModel model;

        /**
         * @param m
         *            the {@link DataKeyTableModel} that holds the table to be
         *            logged.
         */
        public MultiPartyTournamentProgressUI(DataKeyTableModel m) {
                model = m;
                setLayout(new BorderLayout());

                add(progress, BorderLayout.NORTH);

                // table must be inside scrollpane, otherwise the headers do not show.
                JTable resultsTable = new JTable(model);
                resultsTable.setShowGrid(true); // no effect?
                resultsTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
                JScrollPane tableScrollPane = new JScrollPane(resultsTable);

                add(tableScrollPane, BorderLayout.CENTER);
        }

        /***************
         * implements Listener
         *********************/

        // we only listen to update the progress bar. The model updates itself.
        @Override
        public void notifyChange(NegotiationEvent e) {
                if (e instanceof TournamentEndedEvent) {
                        progress.finish();
                } else if (e instanceof TournamentSessionStartedEvent) {
                        TournamentSessionStartedEvent e1 = (TournamentSessionStartedEvent) e;
                        progress.update(e1.getCurrentSession(), e1.getTotalSessions());
                }

        }
}

/**
 * progress panel, shows progress bar and text n/N
 *
 */
@SuppressWarnings("serial")
class Progress extends JPanel {
        private final int SCALE = 1000000;
        private JProgressBar progressbar = new JProgressBar(0, SCALE);
        private JLabel label = new JLabel("starting tournament");

        public Progress() {
                setLayout(new BorderLayout());
                add(label, BorderLayout.EAST);
                add(progressbar, BorderLayout.CENTER);
        }

        /**
         * Shows progress bar when n of total have been started. We are still
         * working on the nth, even if it equals the total. Therefore the progress
         * bar never will go exactly to 100%
         * 
         * @param n
         * @param total
         */
        public void update(int n, int total) {
                progressbar.setValue(Math.min(SCALE - 1, (int) (SCALE * n / (total + 1))));
                label.setText("" + n + "/" + total);
        }

        /**
         * Set progress bar to 100% of total.
         * 
         * @param total
         */
        public void finish() {
                progressbar.setValue(SCALE);
        }

}