Provides keyboard interaction for a contextual link.
The timer is used to create a delay before dismissing the contextual links on blur. This is only necessary when keyboard users tab into contextual links without edit mode (i.e. without TabbingManager). That means that if we decide to disable tabbing of contextual links without edit mode, all this timer logic can go away.
- NaN | number
Sets focus on the model; Clears the timer that dismisses the links.