Dynamically Adding context menu items to tableview columns - javafx

Question

I have the following controller that is instantiated many times on my gui. The reason is beacause it has a tableview that gets filled with different kind of data. Looks like this
class Controller {
#FXML
TableView<Map<String, String> myTable;
private Manager manager;
//Each TableView has different ammount of columns with different names that get dynamically added to the table view using this function
public void setUpColumns(List<TableColumn<Map<String, String>, String>> columns){
myTable.getColumns().addAll(columns);
addContextMenuToColumnHeaders();
}
private addContextMenuToColumnHeaders(){
for (TableColumn<Map<String, String>, ?> tc : myTable.getColumns()){
ContextMenu addToGraphContextMenu = createAddToGraphContextMenu(tc);
tc.setContextMenu(addToGraphContextMenu);
}
}
private ContextMenu createAddToGraphContextMenu(TableColumn<Map<String, String> String> tc){
for (MangerHandledObject mHO : manager.getHandledObjects()){
MenuItem menuItem = new MenuItem(mHO.getName());
menuItem.setOnAction(new EventHandler<ActionEvent>(){
#Override
public void handle(ActionEvent event){
//I want each menu item to have access to the column that is added to get the name of the column. Even after dynamically adding new menuItems
manager.callMethod(tc.getName());
}
});
}
}
}
The manager handled objects are not static. So the are added and deleted from the list that the manager keeps. I tried this
contextMenu.setOnShowing(......)
and before showing it will always check for the list from the manager and re-make the context menu items. But the problems is that when this executes I don't have access to the columns anymore. Is there any way to bypass this? Should I implement my own context menu to have a field of the column Name?

Answer 1

It worked. But I had to add at least one dummy MenuItem on my context menu in order for it to appear.