Finds the sidebar that a given widget belongs to.

Retrieves the registered sidebar with the given ID.

Retrieve full list of sidebars and their widget instance IDs.

Retrieve default registered sidebars list.

Compares a list of sidebars with their widgets against an allowed list.

Converts a widget ID into its id_base and number components.

Register an instance of a widget.

Registers widget control callback for customizing options.

Calls the render callback of a widget and returns the output.

Calls the control callback of a widget and returns the output.