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add a custom class for a wordpress widget
/**
* add class to widget
*
*
*/
function kc_widget_form_extend( $instance, $widget ) {
if ( !isset($instance['classes']) )
$instance['classes'] = null;
$row .= "Class:\t<input type='text' name='widget-{$widget->id_base}[{$widget->number}][classes]' id='widget-{$widget->id_base}-{$widget->number}-classes' class='widefat' value='{$instance['classes']}'/>\n";
$row .= "</p>\n";
echo $row;
return $instance;
}
add_filter('widget_form_callback', 'kc_widget_form_extend', 10, 2);function kc_widget_update( $instance, $new_instance ) {
$instance['classes'] = $new_instance['classes'];
return $instance;
}
add_filter( 'widget_update_callback', 'kc_widget_update', 10, 2 );
function kc_dynamic_sidebar_params( $params ) {
global $wp_registered_widgets;
$widget_id = $params[0]['widget_id'];
$widget_obj = $wp_registered_widgets[$widget_id];
$widget_opt = get_option($widget_obj['callback'][0]->option_name);
$widget_num = $widget_obj['params'][0]['number'];
if ( isset($widget_opt[$widget_num]['classes']) && !empty($widget_opt[$widget_num]['classes']) )
$params[0]['before_widget'] = preg_replace( '/class="/', "class=\"{$widget_opt[$widget_num]['classes']} ", $params[0]['before_widget'], 1 );
return $params;
}
add_filter( 'dynamic_sidebar_params', 'kc_dynamic_sidebar_params' );
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