[PATCH yew-widget-toolkit 4/5] widget: data table: header: fix keyboard navigation from group headers

[Dominik Csapak <d.csapak@proxmox.com>]

Only column headers update the header cursor when they get the focus,
but group headers are focusable too. When a group header gets the
focus, the cursor is either not set yet, so the arrow keys do nothing,
or it still points to the previously focused cell, so the arrow keys
move from there instead.

Since the first header cell is the initial tab stop, this affects
every table where the first header is a group header.

To reproduce:
* use a data table where the first header is a group header
* focus the header with the tab key
* press the right arrow key

The focus stays on the group header instead of moving to the next
cell.

Fix this by also setting the cursor when a group header gets the
focus.

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
---
 src/widget/data_table/header_widget.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/widget/data_table/header_widget.rs b/src/widget/data_table/header_widget.rs
index b6f06f6..2f55e88 100644
--- a/src/widget/data_table/header_widget.rs
+++ b/src/widget/data_table/header_widget.rs
@@ -425,6 +425,7 @@ impl<T: 'static> PwtHeaderWidget<T> {
                     format!("grid-column: {} / span {}", start_col + 1, span,),
                 )
                 .with_child(group.name.clone())
+                .onfocusin(link.callback(move |_| Msg::FocusCell(cell_idx)))
                 .into(),
         );
 
-- 
2.47.3