Keyboard Handling for Item Selection

The following keys and key combinations are used for selecting one or multiple items from a list.

Single Selection

Key combination	Behavior
`SPACE`	If focus is on an item, select the item and deselect all others.

Multi Selection

Key combination	Behavior
`SPACE`	If focus is on an item, select the item and deselect all others.
`CTRL` + `SPACE`	If focus is on an item, select the item in addition to an existing selection..
`SHIFT` + `SPACE`	If focus is on an item, select all items from the previous selected item to the now focused item (included). Previous selection: all kinds of selection except `SHIFTSPACE` selections
`SHIFT` + `UP`	If focus is on an item, change selection state (selected/ not selected) to the item above.
`SHIFT` + `DOWN`	If focus is on an item, change selection state (selected/ not selected) to the item below.
`CTRL` + `A`	Selects all items which the user can reach in the current view by scrolling or paging. If all items are selected, deselect all items.