Function: Registers the previous theme’s sidebars for the block themes.

Function: Retrieves the registered sidebar with the given ID.

Function: Displays a _doing_it_wrong() message for conflicting widget editor scripts.

Function: Finds the sidebar that a given widget belongs to.

Function: Assigns a widget to the given sidebar.

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

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

Function: Enables the widgets block editor. This is hooked into ‘after_setup_theme’ so that the block editor is enabled by default but can be disabled by themes.

Function: Whether or not to use the block editor to manage widgets. Defaults to true unless a theme has removed support for widgets-block-editor or a plugin has filtered the return value of this function.

Function: Converts a widget ID into its id_base and number components.

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

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

Function: Checks if a sidebar is registered.

Function: Display the RSS entries in a list.

Function: Display RSS widget options form.

Function: Process RSS feed widget data and optionally retrieve feed items.

Function: Registers all of the default WordPress widgets on startup.

Function: Handle sidebars config after theme change

Function: Validates and remaps any “orphaned” widgets to wp_inactive_widgets sidebar, and saves the widget settings. This has to run at least on each theme change.

Function: Determines whether a given widget is displayed on the front end.

Function: Retrieves the widget ID base value.

Function: Determines whether the dynamic sidebar is enabled and used by the theme.

Function: Determines whether a sidebar contains widgets.

Function: Remove control callback for widget.