VSCode editor integration file limitations

[david-pa]

I am working on a VSCode editor that uses GLSP's vscode integration to provide graphical elements.

I wanted to see if I could get some clarification on the limitations of GLSP as a VSCode integration, specifically related to how the source model can be loaded.

Based on my current understanding, GLSP is started by whatever extension of GlspEditorProvider the developer provides, where resolveCustomEditor() receives a document and registers the client with a GLSPDiagramIdentifier instance.

export interface GLSPDiagramIdentifier {
    clientId: string;
    diagramType: string;
    uri: string;
    initializeResult?: InitializeResult;
}

resolveCustomEditor(document: T, webviewPanel: WebviewPanel, token: CancellationToken): Thenable<void> | void;

Based on how GLSPDiagramIdentifier is defined, it seems like we're limited to using a single file as the originator of the source model, is that correct? It isn't possible to use a collection of files as a source for the data, then process the contents into some object for GLSP to use?

I imagine this is likely because of how VSCode handles editors as being tied to a specific file, but I just wanted to verify that this is the case.