|wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::is_preview()|| |
Is it a theme preview?
|wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::is_theme_active()|| |
Checks if the current theme is active.
|wp-includes/class-wp-customize-manager.php: start_previewing_theme|| |
Fires once the Customizer theme preview has started.
|wp-includes/plugin.php: add_filter()|| |
Hook a function or method to a specific filter action.
|wp-includes/plugin.php: do_action()|| |
Execute functions hooked on a specific action hook.