Swing/BlockingDialog のバックアップの現在との差分(No.2)

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Window w = SwingUtilities.getWindowAncestor(getRootPane());
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JDialog dialog = new JDialog(w, Dialog.ModalityType.DOCUMENT_MODAL); //APPLICATION_MODAL);
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dialog.setUndecorated(true);
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dialog.setBounds(w.getBounds());
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dialog.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
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int color = check.isSelected() ? 0x22FF0000 : 0x01000000;
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dialog.setBackground(new Color(color, true));
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(new Task() {
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  @Override public void done() {
    if (!isDisplayable()) {
      cancel(true);
      return;
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JButton button = new JButton("Stop 5sec");
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button.addActionListener(e -> {
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  Window w = SwingUtilities.getWindowAncestor(getRootPane());
  JDialog dialog = new JDialog(w, Dialog.ModalityType.APPLICATION_MODAL);
  dialog.setUndecorated(true);
  dialog.setBounds(w.getBounds());
  dialog.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
  int color = check.isSelected() ? 0x22_FF_00_00 : 0x01_00_00_00;
  dialog.setBackground(new Color(color, true));
  new BackgroundTask() {
    @Override protected void done() {
      if (!isDisplayable()) {
        cancel(true);
        return;
      }
      dialog.setVisible(false);
    }
    dialog.setVisible(false);
  }.execute();
  dialog.setVisible(true);
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});
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// ...
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class BackgroundTask extends SwingWorker<String, Void> {
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  @Override protected String doInBackground() throws InterruptedException {
    Thread.sleep(5_000);
    return "Done";
  }
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}).execute();
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dialog.setVisible(true);
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}
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