How to modify a View

Question

Hello,
I have created a simple model class, controller class, and a view that was created using Scene Builder application. Though injection I've passed the model object to the controller and I'm able to handle events and call methods of the model. The problem is, I don't know how to modify the view. If I have some data that the model generates and would like to pass that to view to be displayed how do I do this? I seem to only be able to go in one direction.
D'Mita Levy

Answer 1

You can inject parts of the scene graph into the controller using the fx:id attribute (in FXML) and by annotating the appropriate fields with @FXML in the controller.
Your controller can then observe the model for changes in the data and call methods on the elements of the scene graph to modify it as necessary. In particular, if you can build your model with JavaFX properties, your controller can either register listeners with those properties, or bind properties of the scene graph elements directly to them.
See, perhaps, https://github.com/james-d/TicTacToe for an example.