import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.HPos;
import javafx.geometry.Insets;
import javafx.geometry.VPos;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.ListView;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
public class Main extends Application {
public static void main(String[] args) {
Application.launch(args);
}
@Override
public void start(Stage primaryStage) {
primaryStage.setTitle("ObservableLists");
Group root = new Group();
Scene scene = new Scene(root, 400, 250, Color.WHITE);
GridPane gridpane = new GridPane();
gridpane.setPadding(new Insets(5));
gridpane.setHgap(10);
gridpane.setVgap(10);
Label candidatesLbl = new Label("Left");
GridPane.setHalignment(candidatesLbl, HPos.CENTER);
gridpane.add(candidatesLbl, 0, 0);
Label heroesLbl = new Label("Right");
gridpane.add(heroesLbl, 2, 0);
GridPane.setHalignment(heroesLbl, HPos.CENTER);
final ObservableList<String> lefts = FXCollections.observableArrayList("A","B","C");
final ListView<String> leftListView = new ListView<String>(lefts);
leftListView.setPrefWidth(150);
leftListView.setPrefHeight(150);
gridpane.add(leftListView, 0, 1);
final ObservableList<String> rights = FXCollections.observableArrayList();
final ListView<String> rightListView = new ListView<String>(rights);
rightListView.setPrefWidth(150);
rightListView.setPrefHeight(150);
gridpane.add(rightListView, 2, 1);
Button sendRightButton = new Button(">");
sendRightButton.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
String item = leftListView.getSelectionModel().getSelectedItem();
if (item != null) {
leftListView.getSelectionModel().clearSelection();
lefts.remove(item);
rights.add(item);
}
}
});
Button sendLeftButton = new Button("<");
sendLeftButton.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
String item = rightListView.getSelectionModel().getSelectedItem();
if (item != null) {
rightListView.getSelectionModel().clearSelection();
rights.remove(item);
lefts.add(item);
}
}
});
VBox vbox = new VBox(5);
vbox.getChildren().addAll(sendRightButton,sendLeftButton);
gridpane.add(vbox, 1, 1);
GridPane.setConstraints(vbox, 1, 1, 1, 2,HPos.CENTER, VPos.CENTER);
root.getChildren().add(gridpane);
primaryStage.setScene(scene);
primaryStage.show();
}
}
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