Leo-edit-pane (LEP) project

[tbnorth]

Add a generic "body" pane container with the following features:

• strictly non-singleton, allow multiple editors of multiple types operating on multiple nodes
• has paired edit and view sub-panes for the node, which can be used independently or together, separated by a splitter
• the edit sub-pane will usually be a leo body widget, but may be a specialist editor like the csv table editor, the CKE richtext (HTML) editor, or a simple text editor for a node acting as a sticky note, for example.
• the view sub-pane could be plain text, generated HTML, rendered HTML (from markdown, rst, etc.), or other types of view
• the leo-edit-pane container will handle viewing either or both sub-panes (edit and view) and whether
  • the edit/view panes follow the tree selection of stay on a specified node
  • the tree selection jumps to the edited/viewed node when the leo-edit-pane container is selected, or not (in cases where the leo-edit-pane isn't tracking the tree selection)
  • the view sub-pane shows a single node or a recursive view
  • the view pane updates to match changes in the node content, not doing so is useful when updates are expensive / slow (rendering something complicated, don't do it on every key stroke)

These issues are related: #777, #756 (do this as a LEP view, rather than adding to viewrendered*), #590, #465

Status: working proof of concept of basic architecture (the features described above). Leo body editor widget supports Leo colorizing but not Leo keys. Rendering of markdown with markdown.py or pandoc supported. CSV editor working.

edit-pane-test-open opens the basic container. edit-pane-csv is a shortcut for setting up CSV editing mode.

Todo:

• a column of edit subpanes to support seamless editing of multiple nodes
• simple code (edit sub-pane) and result (view sub-pane) demo
• execute Jupyter cells in edit/view (input/output) panes

[edreamleo]

@tbnorth Thanks for this issue. I've added the "Info" and "EKR" labels so I can see it more easily.

[edreamleo]

This would be good to have, but is it worth the effort??

[edreamleo]

This is not going to happen unless somebody else steps up to do it.