One node of a dashboard layout preview: a panel box, or a row or column that draws its children with this component. The host takes the node's share of its parent as its flex-grow.
The node when it is a row or column, else null.
The node when it is a panel, else null.
The node's share of its parent, from 0 to 1.
One node of a dashboard layout preview: a panel box, or a row or column that draws its children with this component. The host takes the node's share of its parent as its flex-grow.