Same view, multiple cursors?

[decentral1se]

Thanks for all the work, v2 is rad!

Are multiple cursors on a single view possible? I'm playing around with multiplayer editing of text.

I realise now that on the same view, only a single cursor is possible with the current API.

v := tea.NewView("foo")
v.Cursor = tea.NewCursor(x, y)

Ref: https://sw.kovidgoyal.net/kitty/multiple-cursors-protocol/

[GautamKumarOffical]

Good question! You are right that the current Bubble Tea API only supports a single cursor per view through CursorMode and the Cursor field in the model.

For multiplayer text editing with multiple cursors, here are a few approaches:

1. View composition - Render each cursor as a separate visual layer. You can overlay multiple cursor positions by computing the absolute screen position for each remote cursor and rendering them as part of your View() output (using ANSI escape sequences or Unicode block characters).

2. Custom rendering - Since Bubble Tea gives you full control over the terminal output in View(), you can manually place cursor markers at multiple positions. The Kitty multiple cursors protocol you linked is terminal-dependent and not widely supported yet.

3. Programmatic cursor - Use tea.SetCursorAt(x, y) in a Cmd to move the hardware cursor, and render visual markers for other cursors as part of your view string. This way the hardware cursor follows one user while other cursors are drawn as overlays.

The Loro integration you mentioned is interesting - for the data layer, Loro handles the CRDT sync. On the rendering side, Bubble Tea would need to render multiple visual cursors as part of the view rather than relying on the single hardware cursor.

This could be a good feature request issue if you want to propose adding multi-cursor support to the View API.