@FXML void initialize() { // // Defines for event list // removeButton.setDisable(true); editButton.setDisable(true); listView.getSelectionModel().setSelectionMode(SelectionMode.SINGLE); listView .getSelectionModel() .selectedItemProperty() .addListener( new ChangeListener() { @Override public void changed(ObservableValue observableValue, Object o, Object o2) { // Selected if (listView.getSelectionModel().getSelectedItem() == null) { removeButton.setDisable(true); editButton.setDisable(true); } else { removeButton.setDisable(false); editButton.setDisable(false); } // if (listView.getItems().size() != 0) { clearButton.setDisable(false); } else { clearButton.setDisable(true); } } }); // // Defines for date picker // datePicker.setOnAction( new EventHandler<ActionEvent>() { @Override public void handle(ActionEvent actionEvent) { listView.getItems().clear(); List<EventController.EventInfo> list = EventController._eventMap.get(datePicker.getValue()); if (list == null) { // No items } else { // Sorting by time TreeMap<String, String> sortedMap = new TreeMap<String, String>(); for (EventController.EventInfo info : list) { sortedMap.put(info.Time, info.Description); } for (Map.Entry<String, String> entry : sortedMap.entrySet()) { mainApplication.addEvent(entry.getKey(), entry.getValue()); } } } }); // // Defines for clear button // clearButton.setOnAction( new EventHandler<ActionEvent>() { @Override public void handle(ActionEvent actionEvent) { List<EventController.EventInfo> list = EventController._eventMap.get(datePicker.getValue()); if (list == null) { // No items } else { listView.getItems().clear(); list.clear(); } } }); // // Defines for add button // addButton.setOnAction( new EventHandler<ActionEvent>() { @Override public void handle(ActionEvent actionEvent) { mainApplication.displayAdd(); } }); // // Defines for remove button // removeButton.setOnAction( new EventHandler<ActionEvent>() { @Override public void handle(ActionEvent actionEvent) { // Not null TempClass selectedTemp = itemMap.get(listView.getSelectionModel().getSelectedItem()); if (listView.getSelectionModel().getSelectedItem() != null) { listView.getItems().remove(listView.getSelectionModel().getSelectedItem()); EventController.RemoveEvent( datePicker.getValue(), selectedTemp.Time, selectedTemp.Description); } } }); // // Defines for edit button // editButton.setOnAction( new EventHandler<ActionEvent>() { @Override public void handle(ActionEvent actionEvent) { // Not null Object selectedItem = listView.getSelectionModel().getSelectedItem(); if (selectedItem != null) { TempClass temp = itemMap.get(selectedItem); mainApplication.displayEdit( datePicker.getValue(), temp.Time, temp.Description, selectedItem); } } }); }