I am trying display a Map in TableView in JavaFX. The code below works just fine but the issue I am having is that any future Map's update after initialize doesn't show in the TableView.
public class TableCassaController<K,V> extends TableView<Map.Entry<K,V>> implements Initializable {
@FXML private TableColumn<K, V> column1;
@FXML private TableColumn<K, V> column2;
// sample data
Map<String, String> map = new HashMap<>();
map.put("one", "One");
map.put("two", "Two");
map.put("three", "Three");
public TableCassaController(ObservableMap<K,V> map, String col1Name, String col2Name) {
System.out.println("Costruttore table");
TableColumn<Map.Entry<K, V>, K> column1 = new TableColumn<>(col1Name);
column1.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<Map.Entry<K, V>, K>, ObservableValue<K>>() {
@Override
public ObservableValue<K> call(TableColumn.CellDataFeatures<Map.Entry<K, V>, K> p) {
// this callback returns property for just one cell, you can't use a loop here
// for first column we use key
return new SimpleObjectProperty<K>(p.getValue().getKey());
}
});
TableColumn<Map.Entry<K, V>, V> column2 = new TableColumn<>(col2Name);
column2.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<Map.Entry<K, V>, V>, ObservableValue<V>>() {
@Override
public ObservableValue<V> call(TableColumn.CellDataFeatures<Map.Entry<K, V>, V> p) {
// for second column we use value
return new SimpleObjectProperty<V>(p.getValue().getValue());
}
});
ObservableList<Map.Entry<K, V>> items = FXCollections.observableArrayList(map.entrySet());
this.setItems(items);
this.getColumns().setAll(column1, column2);
}
Now, if I try to update the map, this update won't show in the TableView.
use ReadOnlyObjectWrapper
TableColumn<Map.Entry<K, V>, K> column1 = new TableColumn<>(col1Name);
column1.setCellValueFactory(param -> new ReadOnlyObjectWrapper<>(param.getValue().getKey()));
TableColumn<Map.Entry<K, V>, V> column2 = new TableColumn<>(col2Name);
column2.setCellValueFactory(param -> new ReadOnlyObjectWrapper<>(param.getValue().getValue()));
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