Defines the interface for a normal toolbar item.
A method to be called when the toolbar item is clicked.
A html fragment, text or svg fragment represents the toolbar item(icon and title)
A html fragment or svg fragment represents the toolbar icon.
A method that takes a Tile object and returns a boolean that decides which toolbar item should be shown in the toolbar. If it returns false, the item will be not shown.
A pure text or a html fragment represents the toolbar title.
Defines the interface for a normal toolbar item.