Feature Request

Problem

Extensions currently have no way to open editors in the modal overlay introduced with the workbench-modal-editor work. The ViewColumn enum only supports Active, Beside, and numbered columns.

Proposed Solution

Add a ViewColumn.Modal enum value (-4) that maps to MODAL_GROUP, allowing extensions to open editors in the modal overlay via showTextDocument and similar APIs:

vscode.window.showTextDocument(doc, { viewColumn: vscode.ViewColumn.Modal });

Related

• This builds on the existing modal editor infrastructure (MODAL_GROUP / workbench-modal-editor label)
• Modal: allow viewlets to show to the side #302238 — Modal: allow viewlets to show to the side
• Modal editor looses focus after some time #300707 — Modal editor loses focus after some time