When RadListView is in grid mode (SpanCount > 0), there is no spatial navigation with the keyboard.
Up and down arrows move the focused item, left and right arrows don't. (Also: it doesn't seem to be possible to style the focused item…)
Crude drawing:
Only the first column has keyboard navigation, up and down. It's invisible, though; internally, an item is focused and will execute ItemTap when pressing the return key, or will select the item when pressing the spacebar. That part is fine.
After clicking/tapping an item in any column after the first one and then pressing the down arrow, for example, we get this:
Pink is where we clicked/tapped, cyan is what's internally focused after pressing the down arrow.
Please note again that focus != selection.
Expected behavior:
- Implementation/exposure of FocusedItemStyle
- Left and right keyboard arrows should move focus spatially inside the grid; if RadListView is in 1-column (list) mode, Left == Up, Right == Down
Further suggestions:
- Implementation/exposure of HoverItemStyle, for when the mouse pointer is over an item cell
- (changed) ScrollItemIntoView(object item, boolean focusItemAfterScroll, boolean selectItemAfterScroll)
- (new) FocusItem(object item)
- (new) SelectItem(object item)
Hello,
Please find attached a simple project, mostly copied from your RadListView documentation on this URL: https://docs.telerik.com/devtools/xamarin/controls/listview/listview-overview
Main page:
Click the first item so the control gets focus (won't respond to listView.Focus() in codebehind c'tor):
Then press the down arrow, and then the spacebar:
As expected, "Peter" gets selected because the focus is internally on that item.
Now if you press the right arrow and then the spacebar, it's expected that "Teodor" (right of "Peter") would be focused and then selected, but "Peter" gets unselected instead:
Now let's click on Andrea:
Selection is OK, it's expected that "Andrea" would now also be focused. Now if you press the up arrow and then the spacebar, the expected behavior would be that "Teodor" is focused and selected. However:
You can move through the items with up and down arrows, you just can't see it :)
So, RadListView needs to expose a style for focused and also hovered cells (this is UWP, we have a mouse and therefore we have hover), plus it needs to fully respond to keyboard arrows for full spatial navigation in grid mode with Colspan > 1.