Adding multiple tree Branches and leafs in javafx - javafx

Question

hi i post this question before but didn't get any answer. Adding tree Branches and leafs in TreeView
i need help, Please have a look at code,
public class Main extends Application
{
private BorderPane border;
#Override
public void start(Stage primaryStage)
{
border = new BorderPane();
Scene scene = new Scene(border,200,200);
primaryStage.setTitle("BorderPane");
primaryStage.setScene(scene);
primaryStage.show();
TreeItem<String> tree = new TreeItem<String>("Root");
TreeItem<String> item1 = new TreeItem<String>("Branch");
item1.getChildren().add(new TreeItem<String>("Leaf"));
item1.setExpanded(true);
tree.setExpanded(true);
tree.getChildren().addAll(item1);
TreeView<String> treeView = new TreeView<String>(tree);
treeView.setEditable(true);
treeView.setCellFactory(new Callback<TreeView<String>,TreeCell<String>>(){
#Override
public TreeCell<String> call(TreeView<String> arg0) {
return new AddMenuTreeCell();
}
});
VBox vbox =new VBox(2);
vbox.setPadding(new Insets(5));
VBox.setVgrow(treeView, Priority.ALWAYS);
vbox.getChildren().addAll(treeView);
border.setLeft(vbox);
}
private static class AddMenuTreeCell extends TextFieldTreeCell<String> {
private ContextMenu menu = new ContextMenu();
private TextField textField;
public AddMenuTreeCell() {
MenuItem addItem1 = new MenuItem("Insert Branch");
MenuItem addItem2 = new MenuItem("Insert Leaf");
menu.getItems().addAll(addItem1,addItem2);
addItem1.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent arg0) {
TreeItem<String> newBranch =
new TreeItem<String>("Brunch");
getTreeItem().getChildren().add(newBranch);
}
});
addItem2.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent arg0) {
TreeItem<String> newLeaf =
new TreeItem<String>("leaf");
getTreeItem().getChildren().add(newLeaf);
}
});
}
#Override
public void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
if (!empty && getTreeItem().getParent() == null){
setContextMenu(menu);
}
}
}
}
With this user can add multiple Branches and Leafs.
But the problem is, if user add a Branch it should be like "Branch1" next added branch should be "Branch2", "Branch3",...... same for leafs added in any branch have their numbers.
So that later on user can assign different task to different branches and leafs.
Thank you!

Answer 1

Replace AddMenuTreeCell class to below code and try now
private static class AddMenuTreeCell extends TextFieldTreeCell<String> {
private ContextMenu menu = new ContextMenu();
private TextField textField;
int i = 1, j = 1;
public AddMenuTreeCell() {
MenuItem addItem1 = new MenuItem("Insert Branch");
MenuItem addItem2 = new MenuItem("Insert Leaf");
menu.getItems().addAll(addItem1, addItem2);
addItem1.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent arg0) {
TreeItem<String> newBranch = new TreeItem<String>("Brunch" + i);
getTreeItem().getChildren().add(newBranch);
i++;
}
});
addItem2.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent arg0) {
TreeItem<String> newLeaf = new TreeItem<String>("leaf" + j);
getTreeItem().getChildren().add(newLeaf);
j++;
}
});
setContextMenu(menu);
}
}