__( 'A cloud of your most used tags.' ), 'customize_selective_refresh' => true, ); parent::__construct( 'tag_cloud', __( 'Tag Cloud' ), $widget_ops ); } /** * Outputs the content for the current Tag Cloud widget instance. * * @since 2.8.0 * * @param array $args Display arguments including 'before_title', 'after_title', * 'before_widget', and 'after_widget'. * @param array $instance Settings for the current Tag Cloud widget instance. */ public function widget( $args, $instance ) { $current_taxonomy = $this->_get_current_taxonomy( $instance ); if ( ! empty( $instance['title'] ) ) { $title = $instance['title']; } else { if ( 'post_tag' === $current_taxonomy ) { $title = __( 'Tags' ); } else { $tax = get_taxonomy( $current_taxonomy ); $title = $tax->labels->name; } } $show_count = ! empty( $instance['count'] ); /** * Filters the taxonomy used in the Tag Cloud widget. * * @since 2.8.0 * @since 3.0.0 Added taxonomy drop-down. * @since 4.9.0 Added the `$instance` parameter. * * @see wp_tag_cloud() * * @param array $args Args used for the tag cloud widget. * @param array $instance Array of settings for the current widget. */ $tag_cloud = wp_tag_cloud( apply_filters( 'widget_tag_cloud_args', array( 'taxonomy' => $current_taxonomy, 'echo' => false, 'show_count' => $show_count, ), $instance ) ); if ( empty( $tag_cloud ) ) { return; } /** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ $title = apply_filters( 'widget_title', $title, $instance, $this->id_base ); echo $args['before_widget']; if ( $title ) { echo $args['before_title'] . $title . $args['after_title']; } echo '
'; echo $tag_cloud; echo "
\n"; echo $args['after_widget']; } /** * Handles updating settings for the current Tag Cloud widget instance. * * @since 2.8.0 * * @param array $new_instance New settings for this instance as input by the user via * WP_Widget::form(). * @param array $old_instance Old settings for this instance. * @return array Settings to save or bool false to cancel saving. */ public function update( $new_instance, $old_instance ) { $instance = array(); $instance['title'] = sanitize_text_field( $new_instance['title'] ); $instance['count'] = ! empty( $new_instance['count'] ) ? 1 : 0; $instance['taxonomy'] = stripslashes( $new_instance['taxonomy'] ); return $instance; } /** * Outputs the Tag Cloud widget settings form. * * @since 2.8.0 * * @param array $instance Current settings. */ public function form( $instance ) { $current_taxonomy = $this->_get_current_taxonomy( $instance ); $title_id = $this->get_field_id( 'title' ); $count = isset( $instance['count'] ) ? (bool) $instance['count'] : false; $instance['title'] = ! empty( $instance['title'] ) ? esc_attr( $instance['title'] ) : ''; echo '

'; $taxonomies = get_taxonomies( array( 'show_tagcloud' => true ), 'object' ); $id = $this->get_field_id( 'taxonomy' ); $name = $this->get_field_name( 'taxonomy' ); $input = ''; $count_checkbox = sprintf( '

', $this->get_field_id( 'count' ), $this->get_field_name( 'count' ), checked( $count, true, false ), __( 'Show tag counts' ) ); switch ( count( $taxonomies ) ) { // No tag cloud supporting taxonomies found, display error message case 0: echo '

' . __( 'The tag cloud will not be displayed since there are no taxonomies that support the tag cloud widget.' ) . '

'; printf( $input, '' ); break; // Just a single tag cloud supporting taxonomy found, no need to display a select. case 1: $keys = array_keys( $taxonomies ); $taxonomy = reset( $keys ); printf( $input, esc_attr( $taxonomy ) ); echo $count_checkbox; break; // More than one tag cloud supporting taxonomy found, display a select. default: printf( '

' . '

' . $count_checkbox; } } /** * Retrieves the taxonomy for the current Tag cloud widget instance. * * @since 4.4.0 * * @param array $instance Current settings. * @return string Name of the current taxonomy if set, otherwise 'post_tag'. */ public function _get_current_taxonomy( $instance ) { if ( ! empty( $instance['taxonomy'] ) && taxonomy_exists( $instance['taxonomy'] ) ) { return $instance['taxonomy']; } return 'post_tag'; } }