/*
  Write a new view class that displays a tree horizontally with the root on
  the left.
*/

import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;

public class E25_11 extends Application {
  @Override
  public void start(Stage primaryStage) {
    BST<Integer> tree = new BST<>();

    BorderPane pane = new BorderPane();
    BTView view = new BTView(tree);
    pane.setCenter(view);

    TextField tfKey = new TextField();
    tfKey.setPrefColumnCount(3);
    tfKey.setAlignment(Pos.BASELINE_RIGHT);
    Button btInsert = new Button("Insert");
    Button btDelete = new Button("Delete");
    HBox hBox = new HBox(5);
    hBox.getChildren().addAll(new Label("Enter a key: "),
      tfKey, btInsert, btDelete);
    hBox.setAlignment(Pos.CENTER);
    pane.setBottom(hBox);

    btInsert.setOnAction(e -> {
      int key = Integer.parseInt(tfKey.getText());
      if (tree.search(key)) {
        view.displayTree();
        view.setStatus(key + " is already in the tree");
      } else {
        tree.insert(key);
        view.displayTree();
        view.setStatus(key + " is inserted in the tree");
      }
    });

    btDelete.setOnAction(e -> {
      int key = Integer.parseInt(tfKey.getText());
      if (!tree.search(key)) {
        view.displayTree();
        view.setStatus(key + " is not in the tree");
      } else {
        tree.delete(key);
        view.displayTree();
        view.setStatus(key + " is deleted from the tree");
      }
    });

    Scene scene = new Scene(pane, 450, 450);
    primaryStage.setTitle("BSTAnimation");
    primaryStage.setScene(scene);
    primaryStage.show();
  }
}

@@ -1774,20 +1774,14 @@
 le(%22
-BSTAnimation
+E25_11
 %22);%0A

Change the application window title