Enhance lists to support multiple gridcells per row.
Lists with type=grid currently puts everything inside one role=gridcell, which makes screenreaders announce that the grid only has one column, regardless of how many it really has.
Part of this change is to move the aria-selected attribute from the role=gridcell to the role=row.
Another part involves removing the Renderer#renderNode property.
If the List is of type "menu", "listbox" or "list", then this.renderNode === this, the property is redundant. (See #611). If the List is of type "grid", then Renderer subclasses may have
multiple "gridcell" children, so a single renderNode property doesn't make sense.
Enhance lists to support multiple gridcells per row.
Lists with type=grid currently puts everything inside one
role=gridcell, which makes screenreaders announce that the grid only has one column, regardless of how many it really has.Also, support multiple rows per renderer, in order to allow for expandable rows like on https://www.carbondesignsystem.com/components/data-table/code#expandable-data-table.
Part of this change is to move the
aria-selectedattribute from therole=gridcellto therole=row.Another part involves removing the
Renderer#renderNodeproperty. If the List is of type "menu", "listbox" or "list", thenthis.renderNode === this, the property is redundant. (See #611). If the List is of type "grid", then Renderer subclasses may have multiple "gridcell" children, so a singlerenderNodeproperty doesn't make sense.