Records table

fn records_story_columns() -> Vec<RecordColumn> {
    vec![
        // Wide enough for the longest supplier in the fixture: a cell's
        // selectable prose cannot ellipsize, so a column narrower than its
        // content clips mid-word rather than trailing off.
        RecordColumn::new("supplier", "Supplier")
            .sortable(true)
            .fixed(true)
            .width(px(280.)),
        RecordColumn::new("region", "Region")
            .sortable(true)
            .width(px(120.)),
        // The one that takes the room. Every other column here is exactly as
        // wide as its content needs, and the products - a list of chips whose
        // length nobody can predict - take whatever the table has left over.
        RecordColumn::new("products", "Products")
            .width(px(190.))
            .fill(1.),
        RecordColumn::new("unit_cost", "Unit cost")
            .sortable(true)
            .alignment(RecordColumnAlignment::Right)
            .width(px(110.)),
        RecordColumn::new("status", "Status")
            .sortable(true)
            .width(px(140.)),
    ]
}

let mut table = RecordsTable::new(id, label, window, cx);
table.set_columns(records_story_columns(), window, cx);
// A header, a body, and a bottom that says what is in it. Without the
// third, a frame taller than its rows reads as rows that were cut off -
// and a table is the one surface where that guess is worth ruling out.
table.set_footer(records_story_summary(records.content()), cx);
table.set_records(records, window, cx);
table