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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
232 | * in a theme. |
233 | * |
234 | * @since 4.4.0 |
235 | * |
236 | * @see WP_Customize_Manager::__construct() |
237 | * |
238 | * @param array $components List of core components to load. |
239 | * @param WP_Customize_Manager $this WP_Customize_Manager instance. |
240 | */ |
241 | $components = apply_filters( 'customize_loaded_components', array( 'widgets', 'nav_menus' ), $this ); |
242 |
|
243 | if ( in_array( 'widgets', $components ) ) { |
244 | require_once( ABSPATH . WPINC . '/class-wp-customize-widgets.php' ); |
245 | $this->widgets = new WP_Customize_Widgets( $this ); |
246 | } |
247 | if ( in_array( 'nav_menus', $components ) ) { |
248 | require_once( ABSPATH . WPINC . '/class-wp-customize-nav-menus.php' ); |
249 | $this->nav_menus = new WP_Customize_Nav_Menus( $this ); |
250 | } |