makeDirectoryButton.setFont(font);
this.add(makeDirectoryButton);
// 'Delete' button.
JButton deleteButton = new JButton("Delete");
deleteButton.setActionCommand(deleteButton.getText());
DeleteController deleteController = new DeleteController();
deleteController.setPanels(new FileListPanel[]{leftPanel, rightPanel});
deleteButton.addActionListener(deleteController);
deleteButton.setFont(font);
this.add(deleteButton);
}