Trait TableDelegate 

pub trait TableDelegate {
    // Required methods
    fn header_cell_ui(&mut self, ui: &mut Ui, cell: &HeaderCellInfo);
    fn cell_ui(&mut self, ui: &mut Ui, cell: &CellInfo);

    // Provided methods
    fn prepare(&mut self, _info: &PrefetchInfo) { ... }
    fn row_ui(&mut self, _ui: &mut Ui, _row_nr: u64) { ... }
    fn row_top_offset(&self, _ctx: &Context, _table_id: Id, row_nr: u64) -> f32 { ... }
    fn default_row_height(&self) -> f32 { ... }
}

The interface that the user needs to implement to display a table.

The Table calls functions on the delegate to render the table.

Required Methods

fn header_cell_ui(&mut self, ui: &mut Ui, cell: &HeaderCellInfo)

The contents of a header cell in the table.

The CellInfo::row_nr is which header row (usually 0).

fn cell_ui(&mut self, ui: &mut Ui, cell: &CellInfo)

The contents of a cell in the table.

The CellInfo::row_nr is ignoring header rows.

Provided Methods

fn prepare(&mut self, _info: &PrefetchInfo)

Called before any call to Self::cell_ui to communicate the range of visible columns and rows.

You can use this to only load the data required to be viewed.

fn row_ui(&mut self, _ui: &mut Ui, _row_nr: u64)

The contents of a row.

Individual cell Uis will be children of the ui passed to this fn, so you can e.g. use Ui::style_mut to style the whole row.

This might be called multiple times per row (e.g. for sticky and non-sticky columns).

fn row_top_offset(&self, _ctx: &Context, _table_id: Id, row_nr: u64) -> f32

Compute the offset for the top of the given row.

Implement this for arbitrary row heights. The default implementation uses Self::default_row_height.

Note: must always return 0.0 for row_nr = 0.

fn default_row_height(&self) -> f32

Default row height.

This is used by the default implementation of Self::row_top_offset.

Implementors