buttonPanel.setLayout(new BoxLayout(buttonPanel, BoxLayout.Y_AXIS));
buttonPanel.setBorder(BorderFactory.createEmptyBorder(0, 10, 10, 10));
initAddButton();
ReloadDocumentSelectionTableAction reloadAction = new ReloadDocumentSelectionTableAction(mainTable, loader);
popupMenu.add(new JMenuItem(reloadAction));
addToMainTableKeyBindings(reloadAction);
DocumentPropertiesSelectionTableAction documentPropertiesAction = new DocumentPropertiesSelectionTableAction(mainTable);
popupMenu.add(new JMenuItem(documentPropertiesAction));
addToMainTableKeyBindings(documentPropertiesAction);