WaitWindow.java

package games.strategy.engine.framework.ui.background;

import java.awt.BorderLayout;
import java.awt.Color;
import java.util.Timer;
import java.util.TimerTask;

import javax.swing.JWindow;
import javax.swing.SwingUtilities;
import javax.swing.border.LineBorder;

public class WaitWindow extends JWindow {
  private static final long serialVersionUID = -8134956690669346954L;
  private final Object m_mutex = new Object();
  private Timer m_timer = new Timer();
  private boolean m_finished = false;

  public WaitWindow() {
    setSize(200, 80);
    final WaitPanel mainPanel = new WaitPanel("Loading game, please wait.");
    setLocationRelativeTo(null);
    mainPanel.setBorder(new LineBorder(Color.BLACK));
    setLayout(new BorderLayout());
    add(mainPanel, BorderLayout.CENTER);
  }

  public void showWait() {
    final TimerTask task = new TimerTask() {
      @Override
      public void run() {
        SwingUtilities.invokeLater(() -> toFront());
      }
    };

    synchronized (m_mutex) {
      if (m_timer != null) {
        m_timer.schedule(task, 15, 15);
      }
    }
  }

  public void doneWait() {
    synchronized (m_mutex) {
      if (m_timer != null) {
        m_timer.cancel();
        m_timer = null;
      }
    }
    SwingUtilities.invokeLater(() -> {
      setVisible(false);
      removeAll();
      dispose();
    });
    m_finished = true;
  }

  public boolean isFinished() {
    return m_finished;
  }
}