ListView selection listener : ListView « JavaFX « Java

1. Java
2. JavaFX
3. ListView

ListView selection listener

 
import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.ListCell;
import javafx.scene.control.ListView;
import javafx.scene.control.Tooltip;
import javafx.scene.layout.GridPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import javafx.util.Callback;

class Person {
  private StringProperty aliasName;
  private StringProperty firstName;
  private StringProperty lastName;
  private ObservableList<Person> employees = FXCollections
      .observableArrayList();

  public final void setAliasName(String value) {
    aliasNameProperty().set(value);
  }

  public final String getAliasName() {
    return aliasNameProperty().get();
  }

  public StringProperty aliasNameProperty() {
    if (aliasName == null) {
      aliasName = new SimpleStringProperty();
    }
    return aliasName;
  }

  public final void setFirstName(String value) {
    firstNameProperty().set(value);
  }

  public final String getFirstName() {
    return firstNameProperty().get();
  }

  public StringProperty firstNameProperty() {
    if (firstName == null) {
      firstName = new SimpleStringProperty();
    }
    return firstName;
  }

  public final void setLastName(String value) {
    lastNameProperty().set(value);
  }

  public final String getLastName() {
    return lastNameProperty().get();
  }

  public StringProperty lastNameProperty() {
    if (lastName == null) {
      lastName = new SimpleStringProperty();
    }
    return lastName;
  }

  public ObservableList<Person> employeesProperty() {
    return employees;
  }

  public Person(String alias, String firstName, String lastName) {
    setAliasName(alias);
    setFirstName(firstName);
    setLastName(lastName);
  }

}

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

  @Override
  public void start(Stage primaryStage) {
    primaryStage.setTitle("");
    Group root = new Group();
    Scene scene = new Scene(root, 500, 250, Color.WHITE);
    // create a grid pane
    GridPane gridpane = new GridPane();
    gridpane.setPadding(new Insets(5));
    gridpane.setHgap(10);
    gridpane.setVgap(10);

    ObservableList<Person> leaders = FXCollections.observableArrayList();
    leaders.add(new Person("A", "B", "C"));
    leaders.add(new Person("D", "E", "F"));
    final ListView<Person> leaderListView = new ListView<Person>(leaders);
    leaderListView.setPrefWidth(150);
    leaderListView.setPrefHeight(150);

    // 
    leaderListView
        .setCellFactory(new Callback<ListView<Person>, ListCell<Person>>() {

          public ListCell<Person> call(ListView<Person> param) {
            final Label leadLbl = new Label();
            final Tooltip tooltip = new Tooltip();
            final ListCell<Person> cell = new ListCell<Person>() {
              @Override
              public void updateItem(Person item, boolean empty) {
                super.updateItem(item, empty);
                if (item != null) {
                  leadLbl.setText(item.getAliasName());
                  setText(item.getFirstName() + " " + item.getLastName());
                  tooltip.setText(item.getAliasName());
                  setTooltip(tooltip);
                }
              }
            }; // ListCell
            return cell;
          }
        }); // setCellFactory

    gridpane.add(leaderListView, 0, 1);

    leaderListView.getSelectionModel().selectedItemProperty()
        .addListener(new ChangeListener<Person>() {
          public void changed(ObservableValue<? extends Person> observable,
              Person oldValue, Person newValue) {
            System.out.println("selection changed");  
          }
        });

    root.getChildren().add(gridpane);

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

}

   
  

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