Description

In the mo.ui.Table component (https://docs.marimo.io/api/inputs/table/) it's possible to select one or more rows when clicking on the table. I propose adding more selection modes to make it possible to select a cell and get both the row and column information associated with that cell.

In our use case we have some fairly wide dataframes and would like our users to be able to trigger some charts on more than one dimension by just clicking one cell.

Suggested solution

In the mo.ui.Table component we have the argument:

    selection: Optional[
        Literal["single", "multi"]
    ] = "multi",

At the moment this allows two modes:

• single: only one row can be selected
• multi: many rows can be selected

I propose adding a new option to this:

• cell: when a cell is clicked then both the row and column information is sent to the defined on_change callback.

At the moment, the on_change callback is called with a list of dicts of all the information in the selected rows. I'm not sure what is a clean way to do this, but two suggestions come to mind:

• Keep this first argument the same but add an additional argument which contains the row_idx and the column name which was selected.
• Add the row_idx and column name into the existing argument e.g.:

[{'first_name': 'Michael', 'last_name': 'Scott'}]

Would become:

[{'first_name': 'Michael', 'last_name': 'Scott', 'row_idx': 1, column_selected: 'first_name'}]

Alternative

No response

Additional context

No response