Unable to load model in the non-language-server case about sprotty-vscode HOT 6 CLOSED

Doesn't this mean that the diagram is expected to be served from the language server?

No, it just means that the default is to provide the diagram from the backend of the VS Code extension. We just released a new package sprotty-protocol that can be used in the backend (main extension code), but it's true that an example for this is missing. I hope we can provide one soon.

If you want to create the model directly in the frontend (webview), you can rebind TYPES.ModelSource to LocalModelSource.

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is there any update regarding this topic?

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Please check out v0.5.0. It brings a major redesign of the API. This includes an option for the new WebviewEndpoint class to communicate via a DiagramServer as defined in sprotty-protocol:

https://github.com/eclipse/sprotty-vscode/blob/fa9c9ac4cc36960208ea732d22fc0904d4fcd5b2/packages/sprotty-vscode/src/webview-endpoint.ts#L47

You can create this DiagramServer in the VS Code extension to generate diagrams and handle client actions.

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Hi, is there an example for the usage of DiagramServer and WebviewEndpoint available yet?

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I don't know of a publicly available example. But something like this could be a good start:

export class StatesWPM extends WebviewPanelManager {

    protected override createEndpoint(identifier: SprottyDiagramIdentifier): WebviewEndpoint {
        const webviewContainer = this.createWebview(identifier);
        const participant = this.messenger.registerWebviewPanel(webviewContainer);
        const diagramServices: DiagramServices = {
            DiagramGenerator: new StatesDiagramGenerator()
        };
        return new WebviewEndpoint({
            webviewContainer,
            messenger: this.messenger,
            messageParticipant: participant,
            identifier,
            diagramServerFactory: (dispatch) => new DiagramServer(dispatch, diagramServices)
        });
    }

}

export class StatesDiagramGenerator implements IDiagramGenerator {
    generate(args: GeneratorArguments): SModelRoot | Promise<SModelRoot> {
        // Generate a diagram model based on options like `args.options.sourceUri`
    }
}

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I appreciate it. Thank you for the fast response!

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