Optional
activeA signal that is fired when the item active state changes.
Optional
alignWhich side to place item. Permanent items are intended for the right and left side, with more transient items in the middle.
Optional
isWhether the item is shown or hidden.
The item to add to the status bar.
Optional
priorityDisplaying Items based on zoom priority -- higher zoom priority gets prioritised when zoom levels increase
Optional
rankOrdering of Items -- higher rank items are closer to the middle.
Options for status bar items.