Get actionDispatcher in theia-ecore

[glsp-bot]

I'm currently not able revceive a actionDispatcher instance in the theia-ecore part of ecore-glsp.

When working in sprotty-ecore i can inject it with
@inject(TYPES.IActionDispatcher) protected readonly actionDispatcher: GLSPActionDispatcher;
but this does not work when working in theia-ecore.

I saw that the EcoreDiagramWidget got an instance by
const clientId = this.createClientId(); const config = this.diagramConfigurationRegistry.get(options.diagramType); const diContainer = config.createContainer(clientId); let actionDispatcher = diContainer.get(TYPES.IActionDispatcher);
but I'm not sure how I could use this and if there is not a simpler way?

original thread by Leo Knoll

[tortmayr]

Each sprotty diagram has its own DI container (and as a consequence its own instance of the action dispatcher) so it's not possible to simply inject the dispatcher into theia application code. If you want to use the action dispatcher in your theia application you would have to retrieve the currently active (diagram) widget and access its action dispatcher instance.

[glsp-bot]

[Leo Knoll]

Thanks for the quick response, so this will work as long as there is one diagram open. I guess there is no way if no diagram is open?

```@inject(DiagramManagerProvider) protected readonly diagramManagerProvider: DiagramManagerProvider;
...

this.diagramManagerProvider().then(provider => {
                            let myprovider = <EAMDiagramManager> provider;
                            let widget = <DiagramWidget> myprovider.diagramConnector.widgetManager.getWidgets(provider.id)[0];

                            widget.actionDispatcher ...```

[tortmayr]

Yes that's correct. If no diagram is opened you cannot access the action dispatcher.