Module DocumentProvider 

DocumentProvider (Environment)

Implements the DocumentProvider trait, managing the complete lifecycle of document operations including opening, saving, editing, and closing. It maintains document state, coordinates between the frontend (Sky), extension host (Cocoon), and filesystem, and handles both native file URIs and custom scheme URIs.

Implementation Strategy

The trait implementation is split across multiple helper modules for maintainability:

• OpenDocument: Document opening and content resolution (file:// and custom schemes)
• SaveOperations: SaveDocument, SaveDocumentAs, SaveAllDocuments
• ApplyChanges: ApplyDocumentChanges (incremental text edits)
• Notifications: NotifyModelAdded, NotifyModelChanged, NotifyModelSaved, NotifyModelRemoved

The single impl DocumentProvider for MountainEnvironment block in this file delegates to those helper functions. This satisfies Rust’s orphan rules while keeping code organized and atomic.

Modules

ApplyChanges 🔒

Document change application logic.

Notifications 🔒

Notification helpers for sending document lifecycle events to Cocoon.

OpenDocument 🔒

Document opening and content resolution logic.

SaveOperations 🔒

Document save operations.