widgets ) as $widget_key ) { // Multi widgets
if ( !isset( $allowed_widgets[ $widget_key ] ) )
unregister_widget( $widget_key );
}
}
function filter_single() {
if ( current_user_can( 'manage_network_themes' ) ) // Disable restrictions for network admins
return;
$allowed_widgets = get_site_option( 'allowedwidgets' );
if ( !is_array( $allowed_widgets ) )
return $widgets;
foreach( array_keys( $this->single_widgets ) as $widget_key ) { // Single widgets
if ( !isset( $allowed_widgets[ $widget_key ] ) )
wp_unregister_sidebar_widget( $widget_key );
}
}
function register( $widget ) { // Register single instance widgets internally since they don't use WP_Widget_Factory
if ( isset( $widget['params'][0] ) && ! is_array( $widget['params'][0] ) ) {
$this->single_widgets[ $widget['id'] ] = $widget['name'];
}
return $widget;
}
function unregister( $widget_id ) { // Unregister single instance widget
unset( $this->single_widgets[ $widget_id ] );
}
function setup_admin() {
if ( function_exists('is_network_admin') )
$page = add_theme_page( __( 'Restricted Widgets', 'restrict-multisite-widgets' ), __( 'Widget Restrictions', 'restrict-multisite-widgets' ), 'manage_network_themes', 'ms-widgets', array(&$this,'admin') );
else
$page = add_submenu_page( 'ms-admin.php', __( 'Restricted Widgets', 'restrict-multisite-widgets' ), __('Widgets', 'restrict-multisite-widgets' ), 'manage_network_themes', 'ms-widgets', array(&$this,'admin') );
add_contextual_help( $page,
'' . __( 'This screen enables and disables the inclusion of widgets available to choose in the Widgets menu for each site.', 'restrict-multisite-widgets' ) . '
' .
'' . __( 'If the network admin disables a widget that is in use, it will be removed from any sites using it.', 'restrict-multisite-widgets' ) . '
'
);
}
function admin() {
global $wp_widget_factory;
if ( isset( $_POST['widget'] ) ) {
$widget_states = array();
foreach( (array)$_POST['widget'] as $widget => $widget_state ) {
if ( $widget_state == 'enabled' )
$widget_states[ $widget ] = 1;
else
unset( $widget_states[ $widget ] );
}
$updated = update_site_option( 'allowedwidgets', $widget_states );
}
if ( isset($updated) && $updated ) {
?>