wp-includes/class-wp-customize-widgets.php:268Override sidebars_widgets for theme switch.
public function override_sidebars_widgets_for_theme_switch() { global $sidebars_widgets; if ( $this->manager->doing_ajax() || $this->manager->is_theme_active() ) { return; } $this->old_sidebars_widgets = wp_get_sidebars_widgets(); add_filter( 'customize_value_old_sidebars_widgets_data', array( $this, 'filter_customize_value_old_sidebars_widgets_data' ) ); $this->manager->set_post_value( 'old_sidebars_widgets_data', $this->old_sidebars_widgets ); // Override any value cached in changeset. // retrieve_widgets() looks at the global $sidebars_widgets. $sidebars_widgets = $this->old_sidebars_widgets; $sidebars_widgets = retrieve_widgets( 'customize' ); add_filter( 'option_sidebars_widgets', array( $this, 'filter_option_sidebars_widgets_for_theme_switch' ), 1 ); // Reset global cache var used by wp_get_sidebars_widgets(). unset( $GLOBALS['_wp_sidebars_widgets'] ); }Introduced in 3.9.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-customize-widgets.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.