Column Selection Service¶
Vinyl's Column Selection Service is responsible for dynamically deciding what columns are visible on a Grid panel, when there are too many columns to display.
Note
Column Selection Service is intentionally disabled on dynamic data grids, where you are viewing the contents of a table or rule directly.
The algorithm is described in detail in the attached presentation.
Key points to remember:
- Priority 1 fields are never dropped.
- The default priority (if not set) is 100.
- Grid sort order is based on the first field, but can be set by setting sort order and sort direction on elements in the MRP
- Width 0 fields are hidden (but used for sorting if they are the first field in the grid)
- Fields that have been selected for display will have space allocated to them based on the sum of the widths requesting space.
- A good guideline is to set the widths of columns based on the number of characters you would want them to display.
- Column wrapping is not supported with Column Selection Services disabled.