How to implement ISelectionListener for an UIExtension

[wss29]

Hi,
I create an AbstractUIExtension implement ISelectionListener in glsp version 1.1.0

in that version the SelectionService has a register method.

but in glsp version 2.1.1. the register method in SelectionService has been removed. the selectionChanged in my UIExtension can not be triggered when I select node. how can I trigger the selectionChanged in my UIExtension when I select item in my glsp language

[tortmayr]

Hi @wss29
with GLSP 2.x the lister mechanism has been reworked to use a emitter/event system similar to how its used in Theia VSCode.
To manually register a listener for selection services you have to use the SelectionService.onSelectionChanged() method now.

  @postConstruct()
    protected postConstruct(): void {
        this.selectionService.onSelectionChanged(change =>
            this.onSelectionChanged(change => listener.selectionChanged(change.root, change.selectedElements, change.deselectedElements))
        );
    }

[wss29]

Hi @tortmayr
Does that mean I do not need to implement ISelectionListener for my UIExtension, directly use selectionService, and listen to the onSelectionChanged event in my UIExtension.