import java.awt.BorderLayout;
import javax.imageio.ImageReader;
import javax.imageio.event.IIOReadProgressListener;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JOptionPane;

public class ReadProgressDialog implements IIOReadProgressListener {
    JLabel progressState;
    JProgressBar progressBar;

    public ReadProgressDialog() {
        JPanel panel = new JPanel();
        panel.setLayout(new BorderLayout());

        progressState = new JLabel("No Operation.");
        progressBar = new JProgressBar(0, 100);
        progressBar.setValue(0);
        
        panel.add(progressState, BorderLayout.NORTH);
        panel.add(progressBar, BorderLayout.CENTER);

        JOptionPane pane = new JOptionPane(panel, JOptionPane.PLAIN_MESSAGE);
        JDialog dialog = pane.createDialog(null, "Image Reading Progress");
        dialog.setModal(false);

        dialog.show();
    }

    public void sequenceStarted(ImageReader source, int minIndex) {
        progressState.setText("Sequence Is Started.");
    }

    public void sequenceComplete(ImageReader source) {
        progressState.setText("Sequence Is Complete.");
    }

    public void imageStarted(ImageReader source, int index) {
        progressBar.setValue(0);
        progressState.setText("Image Reading Is Started: No." + index);
    }

    public void imageProgress(ImageReader source, float percentageDone) {
        progressBar.setValue((int)percentageDone);
    }

    public void imageComplete(ImageReader source) {
        progressBar.setValue(100);
        progressState.setText("Image Reading Is Complete.");
    }

    public void thumbnailStarted(ImageReader source, int index, int thumbnailIndex) {
        progressBar.setValue(0);
        progressState.setText("Thumbnail Reading Is Started.");
    }

    public void thumbnailProgress(ImageReader source, float percentageDone) {
        progressBar.setValue((int)percentageDone);
    }
    
    public void thumbnailComplete(ImageReader source) {
        progressBar.setValue(100);
        progressState.setText("Thumbnail Reading Is Complete.");
    }
    
    public void readAborted(ImageReader source) {
        progressState.setText("Reading Is Aborted.");
    }
}