The GtkStackSwitcher widget acts as a controller for a Stack; it shows a row of buttons to switch between the various pages of the associated stack widget.
All the content for the buttons comes from the child properties of the Stack; the button visibility in a StackSwitcher widget is controlled by the visibility of the child in the Stack.
It is possible to associate multiple StackSwitcher widgets with the same Stack widget.
The GtkStackSwitcher widget was added in 3.10.
GtkStackSwitcher has a single CSS node named stackswitcher and style class .stack-switcher.
When circumstances require it, GtkStackSwitcher adds the .needs-attention style class to the widgets representing the stack pages.