__( '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
* @access public
*
* @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;
}
}
/**
* Filters the taxonomy used in the Tag Cloud widget.
*
* @since 2.8.0
* @since 3.0.0 Added taxonomy drop-down.
*
* @see wp_tag_cloud()
*
* @param array $args Args used for the tag cloud widget.
*/
$tag_cloud = wp_tag_cloud( apply_filters( 'widget_tag_cloud_args', array(
'taxonomy' => $current_taxonomy,
'echo' => false
) ) );
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
* @access public
*
* @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'] );
$instance['taxonomy'] = stripslashes($new_instance['taxonomy']);
return $instance;
}
/**
* Outputs the Tag Cloud widget settings form.
*
* @since 2.8.0
* @access public
*
* @param array $instance Current settings.
*/
public function form( $instance ) {
$current_taxonomy = $this->_get_current_taxonomy($instance);
$title_id = $this->get_field_id( 'title' );
$instance['title'] = ! empty( $instance['title'] ) ? esc_attr( $instance['title'] ) : '';
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 options
case 1:
$keys = array_keys( $taxonomies );
$taxonomy = reset( $keys );
printf( $input, esc_attr( $taxonomy ) );
break;
// More than one tag cloud supporting taxonomy found, display options
default:
printf(
'
' .
'
';
}
}
/**
* Retrieves the taxonomy for the current Tag cloud widget instance.
*
* @since 4.4.0
* @access public
*
* @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';
}
}