please-wait-dialog

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author ThinkPad
 */
import javax.swing.JFileChooser;
import javax.swing.filechooser.FileNameExtensionFilter;
import javax.swing.SwingWorker;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.JLabel;
import java.awt.BorderLayout;
import java.io.File;

public class TheFrame extends javax.swing.JFrame {

    /**
     * Creates new form TheFrame
     */
    public TheFrame() {
        initComponents();
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        OpenSongFile = new javax.swing.JButton();
        jScrollPane1 = new javax.swing.JScrollPane();
        ReadInfo = new javax.swing.JTextArea();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        OpenSongFile.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
        OpenSongFile.setText("Open Song File");
        OpenSongFile.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                OpenSongFileActionPerformed(evt);
            }
        });

        ReadInfo.setColumns(20);
        ReadInfo.setRows(5);
        ReadInfo.setToolTipText("");
        jScrollPane1.setViewportView(ReadInfo);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(39, 39, 39)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addComponent(jScrollPane1)
                    .addComponent(OpenSongFile, javax.swing.GroupLayout.DEFAULT_SIZE, 584, Short.MAX_VALUE))
                .addContainerGap(124, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(34, 34, 34)
                .addComponent(OpenSongFile, javax.swing.GroupLayout.PREFERRED_SIZE, 98, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(18, 18, 18)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 109, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(67, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>

    private void OpenSongFileActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here:
        JFileChooser fileChooser = new JFileChooser();
        fileChooser.setAcceptAllFileFilterUsed(false);
        FileNameExtensionFilter filter = new FileNameExtensionFilter("MP3 files", "mp3");
        fileChooser.addChoosableFileFilter(filter);
        fileChooser.setCurrentDirectory(new File(System.getProperty("user.dir")));
        int result = fileChooser.showOpenDialog(this);
        if (result != JFileChooser.APPROVE_OPTION) {
            //ReadInfo.setText("No song file has been selected");
            System.out.println("OpenSongFile canceled by user");
            return;
        }
        final JDialog loading = new JDialog(this);
        JPanel p1 = new JPanel(new BorderLayout());
        p1.add(new JLabel("Please wait..."), BorderLayout.CENTER);
        loading.setUndecorated(true);
        loading.getContentPane().add(p1);
        loading.pack();
        loading.setLocationRelativeTo(this);
        loading.setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);
        loading.setModal(true);
        SwingWorker<String, Void> worker = new SwingWorker<String, Void>() {
            @Override
            protected String doInBackground() throws InterruptedException {
                for (int i = 0; i < 10000; i++)
                    for (int j = 0; j < 10000; j++)
                        ;
                return "hello";
            }
            @Override
            protected void done() {
                loading.dispose();
            }
        };
        worker.execute();
        loading.setVisible(true);
        try {
            worker.get();
        } catch (Exception e1) {
            e1.printStackTrace();
        }

        File selectedFile = fileChooser.getSelectedFile();
        ReadInfo.setText("Selected file: " + selectedFile.getAbsolutePath());
        //System.out.println();


    }

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(TheFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(TheFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(TheFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(TheFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new TheFrame().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify
    private javax.swing.JButton OpenSongFile;
    private javax.swing.JTextArea ReadInfo;
    private javax.swing.JScrollPane jScrollPane1;
    // End of variables declaration
}