The ButtonTableHeading class provides functionality to work with table heading.
Returns a list of commands. If a list of commands was passed
commands, it will take a precedence over the default ones.
The list of available commands.
Lifecycle. Renders the UI of the button.
The content which should be rendered.
List of the commands the button is able to handle.
The editor instance where the component is being used.
Indicates whether the styles list is expanded or not.
The name which will be used as an alias of the button in the configuration.
The label that should be used for accessibility purposes.
The tabIndex of the button in its toolbar current state. A value other than -1 means that the button has focus and is the active element.
Callback provided by the button host to notify when the styles list has been expanded.