editButton.setFont(font);
this.add(editButton);
// 'Copy' button.
JButton copyButton = new JButton("Copy");
copyButton.setActionCommand(copyButton.getText());
CopyController copyController = new CopyController();
copyController.setPanels(new FileListPanel[]{leftPanel, rightPanel});
copyButton.addActionListener(copyController);
copyButton.setFont(font);
this.add(copyButton);
// 'Move' button.
JButton moveButton = new JButton("Move");