JavaFX UI组件——Tree Table View

详解：https://docs.oracle.com/javase/8/javafx/user-interface-tutorial/tree-table-view.htm

代码示例：

import java.util.Arrays;
import java.util.List;
import javafx.application.Application;
import javafx.beans.property.ReadOnlyStringWrapper;
import javafx.beans.property.SimpleStringProperty;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.SelectionMode;
import javafx.scene.control.TreeTableColumn;
import javafx.scene.control.TreeItem;
import javafx.scene.control.TreeSortMode;
import javafx.scene.control.TreeTableView;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class TreeTableViewSample extends Application {

    List employees = Arrays.asList(
        new Employee("Ethan Williams", "[email protected]"),
        new Employee("Emma Jones", "[email protected]"),
        new Employee("Michael Brown", "[email protected]"),
        new Employee("Anna Black", "[email protected]"),
        new Employee("Rodger York", "[email protected]"),
        new Employee("Susan Collins", "[email protected]"));
    private final ImageView depIcon = new ImageView (
            new Image(getClass().getResourceAsStream("department.png"))
    );
    
    final TreeItem root = 
        new TreeItem<>(new Employee("Sales Department", ""), depIcon);

    public static void main(String[] args) {
        Application.launch(TreeTableViewSample.class, args);
    }

    @Override
    public void start(Stage stage) {
        root.setExpanded(true);
        employees.stream().forEach((employee) -> {
            root.getChildren().add(new TreeItem<>(employee));
        });
        stage.setTitle("Tree Table View Sample");
        final Scene scene = new Scene(new Group(), 400, 400);
        scene.setFill(Color.LIGHTGRAY);
        Group sceneRoot = (Group) scene.getRoot();

        TreeTableColumn empColumn = 
            new TreeTableColumn<>("Employee");
        empColumn.setPrefWidth(150);
        empColumn.setCellValueFactory(
            (TreeTableColumn.CellDataFeatures param) -> 
            new ReadOnlyStringWrapper(param.getValue().getValue().getName())
        );
        TreeTableColumn emailColumn = 
            new TreeTableColumn<>("Email");
        emailColumn.setPrefWidth(190);
        emailColumn.setCellValueFactory(
            (TreeTableColumn.CellDataFeatures param) -> 
            new ReadOnlyStringWrapper(param.getValue().getValue().getEmail())
        );
        emailColumn.setSortType(TreeTableColumn.SortType.ASCENDING);

        TreeTableView treeTableView = new TreeTableView<>(root);
        treeTableView.getColumns().setAll(empColumn, emailColumn);
        treeTableView.setSortMode(TreeSortMode.ALL_DESCENDANTS);
        treeTableView.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
        treeTableView.getSelectionModel().setCellSelectionEnabled(true);
        sceneRoot.getChildren().add(treeTableView);

        stage.setScene(scene);
        stage.show();
    }

    public class Employee {

        private SimpleStringProperty name;
        private SimpleStringProperty email;
        public SimpleStringProperty nameProperty() {
            if (name == null) {
                name = new SimpleStringProperty(this, "name");
            }
            return name;
        }
        public SimpleStringProperty emailProperty() {
            if (email == null) {
                email = new SimpleStringProperty(this, "email");
            }
            return email;
        }
        private Employee(String name, String email) {
            this.name = new SimpleStringProperty(name);
            this.email = new SimpleStringProperty(email);
        }
        public String getName() {
            return name.get();
        }
        public void setName(String fName) {
            name.set(fName);
        }
        public String getEmail() {
            return email.get();
        }
        public void setEmail(String fName) {
            email.set(fName);
        }
    }
}