JavaFx 中 重写 TableView 的 MenuButton

在JavaFx的 TableView 上可以使用MenuButton来管理TableView的Column.

启用MenuButton.

TableView.setTableMenuButtonVisible(true);

但是普通的MenuButton, 每次点击都会刷新TableView, 而且在过多column的TableView中使用比较麻烦.

所以,需要重写MenuButton的点击事件来做出我们想要的效果. 

//找到tableView 的 menuButton.
Node showHideColumnsButton = tableView
		.lookup(".show-hide-columns-button");
EventHandler<MouseEvent> mousePressedHandler = new EventHandler<MouseEvent>() {
	@Override
	public void handle(MouseEvent event) {
                //弹出管理窗口等等功能
                //...

		//中止event
		event.consume();
	}
};
showHideColumnsButton.addEventFilter(MouseEvent.MOUSE_PRESSED,
		mousePressedHandler);

如果有部分列必须显示,不想被修改是否显示.

public class TableViewTest extends Application {

	/**
	 * @description
	 * @author jie_peng
	 * @create 2013-11-6 下午2:28:20
	 */
	public static void main(String[] args) {
		launch(args);
	}

	@Override
	public void start(Stage paramStage) throws Exception {
		final ObservableList<Person> data = FXCollections.observableArrayList(
				new Person(1, "张三", 23), new Person(2, "李四", 24), new Person(3,
						"王五", 56));
		final TableView<Person> tableView = new TableView<Person>();
		tableView.setTableMenuButtonVisible(true);
		TableColumn<Person, Integer> idColumn = new TableColumn<Person, Integer>(
				"id");
		idColumn.setCellValueFactory(new PropertyValueFactory<Person, Integer>(
				"num"));

		CheckMenuItem showHideidCol = new CheckMenuItem("id");
		showHideidCol.selectedProperty().bindBidirectional(
				idColumn.visibleProperty());
		TableColumn<Person, String> nameColumn = new TableColumn<Person, String>(
				"名字");

		nameColumn
				.setCellValueFactory(new PropertyValueFactory<Person, String>(
						"name"));
		CheckMenuItem showHideNameCol = new CheckMenuItem("name");
		showHideNameCol.selectedProperty().bindBidirectional(
				nameColumn.visibleProperty());

		TableColumn<Person, Integer> ageColumn = new TableColumn<Person, Integer>(
				"年龄");
		ageColumn
				.setCellValueFactory(new PropertyValueFactory<Person, Integer>(
						"age"));

		CheckMenuItem showHideAgeCol = new CheckMenuItem("age");
		showHideAgeCol.selectedProperty().bindBidirectional(
				ageColumn.visibleProperty());

		tableView.getColumns().addAll(idColumn, nameColumn, ageColumn);
		tableView.setItems(data);
		BorderPane root = new BorderPane();
		ScrollPane scroller = new ScrollPane();
		scroller.setContent(tableView);
		root.setCenter(scroller);
		Scene scene = new Scene(root, 500, 250);

		paramStage.setScene(scene);
		paramStage.centerOnScreen();
		paramStage.show();

		final ContextMenu menu = new ContextMenu();
		menu.getItems().addAll(showHideNameCol, showHideAgeCol);
		final Node showHideColumnsButton = tableView
				.lookup(".show-hide-columns-button");
		EventHandler<MouseEvent> mousePressedHandler = new EventHandler<MouseEvent>() {
			@Override
			public void handle(MouseEvent event) {
				if (menu.isShowing()) {
					menu.hide();
				} else {
					menu.show(showHideColumnsButton, Side.BOTTOM, 0, 0);
				}
				event.consume();
			}
		};
		showHideColumnsButton.addEventFilter(MouseEvent.MOUSE_PRESSED,
				mousePressedHandler);
	}

	public static class Person {

		private final SimpleIntegerProperty num;
		private final SimpleStringProperty name;
		private final SimpleIntegerProperty age;

		private Person(int id, String name, int age) {
			this.name = new SimpleStringProperty(name);
			this.age = new SimpleIntegerProperty(age);
			this.num = new SimpleIntegerProperty(id);
		}

		public Integer getNum() {
			return num.getValue();
		}

		public String getName() {
			return name.get();
		}

		public Integer getAge() {
			return age.getValue();
		}

	}
}

		//do something