JavaFX analog of Swing Action

Question

In Swing application i can declare an Action object which allows to maintain:

• action availability
• accelerator key
• what action do

and other things in single place.

Let me dive you into some details:

I'm having a scene with TreeView. In scene i have some buttons which allows to add child and remove selected item.

Additionaly i'm having an ContextMenu for TreeView with MenuItem's which does same things as a buttons.

Depending on selected item i need to enable or disable those menu items and buttons.

In Swing i can solve this easily by using Swing Action. I.e. enabling/disabling action will enable/disable all associated components.

Does JavaFX 2.2 has some analog of Swing Action?

Answer 1

Short answer: No. JavaFX 2.2 does not have an equivalent to Action. There is an extension project called ControlsFX that offers action classes, but is designed to work with JavaFX 8.

That being said, it should be easy enough to implement at least a workable alternative. Basically, I'd write my own Action class exposing an ObservableBooleanValue (or in your case probably a BooleanBinding) and bind the controls' disable property to it to mimic Swings enabled state. It is a bit more cumbersome, but with a few lines of utility methods you'll at least get close.