2015-09-01 15:49:21 +02:00
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<?php
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/**
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2015-09-22 17:02:26 +02:00
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* Widget API: WP_Widget_Tag_Cloud class
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2015-09-01 15:49:21 +02:00
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*
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* @package WordPress
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* @subpackage Widgets
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2015-09-22 17:02:26 +02:00
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* @since 4.4.0
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*/
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/**
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* Core class used to implement a Tag cloud widget.
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*
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* @since 2.8.0
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*
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* @see WP_Widget
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2015-09-01 15:49:21 +02:00
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*/
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class WP_Widget_Tag_Cloud extends WP_Widget {
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2015-09-27 02:32:24 +02:00
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/**
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* Sets up a new Tag Cloud widget instance.
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*
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* @since 2.8.0
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* @access public
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*/
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2015-09-01 15:49:21 +02:00
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public function __construct() {
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2016-03-21 22:59:29 +01:00
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$widget_ops = array(
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'description' => __( 'A cloud of your most used tags.' ),
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'customize_selective_refresh' => true,
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);
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parent::__construct( 'tag_cloud', __( 'Tag Cloud' ), $widget_ops );
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2015-09-01 15:49:21 +02:00
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}
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/**
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2015-09-27 02:32:24 +02:00
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* Outputs the content for the current Tag Cloud widget instance.
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*
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* @since 2.8.0
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* @access public
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*
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* @param array $args Display arguments including 'before_title', 'after_title',
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* 'before_widget', and 'after_widget'.
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* @param array $instance Settings for the current Tag Cloud widget instance.
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2015-09-01 15:49:21 +02:00
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*/
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public function widget( $args, $instance ) {
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$current_taxonomy = $this->_get_current_taxonomy($instance);
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if ( !empty($instance['title']) ) {
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$title = $instance['title'];
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} else {
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if ( 'post_tag' == $current_taxonomy ) {
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$title = __('Tags');
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} else {
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$tax = get_taxonomy($current_taxonomy);
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$title = $tax->labels->name;
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}
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}
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/**
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2016-05-22 20:06:28 +02:00
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* Filters the taxonomy used in the Tag Cloud widget.
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2015-09-01 15:49:21 +02:00
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*
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* @since 2.8.0
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* @since 3.0.0 Added taxonomy drop-down.
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*
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* @see wp_tag_cloud()
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*
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* @param array $current_taxonomy The taxonomy to use in the tag cloud. Default 'tags'.
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*/
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2015-09-18 00:11:24 +02:00
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$tag_cloud = wp_tag_cloud( apply_filters( 'widget_tag_cloud_args', array(
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'taxonomy' => $current_taxonomy,
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'echo' => false
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2015-09-01 15:49:21 +02:00
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) ) );
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2015-09-18 00:11:24 +02:00
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if ( empty( $tag_cloud ) ) {
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return;
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}
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/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
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$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );
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echo $args['before_widget'];
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if ( $title ) {
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echo $args['before_title'] . $title . $args['after_title'];
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}
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echo '<div class="tagcloud">';
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echo $tag_cloud;
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2015-09-01 15:49:21 +02:00
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echo "</div>\n";
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echo $args['after_widget'];
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}
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/**
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2015-09-27 02:32:24 +02:00
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* Handles updating settings for the current Tag Cloud widget instance.
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*
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* @since 2.8.0
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* @access public
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*
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* @param array $new_instance New settings for this instance as input by the user via
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* WP_Widget::form().
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* @param array $old_instance Old settings for this instance.
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* @return array Settings to save or bool false to cancel saving.
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2015-09-01 15:49:21 +02:00
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*/
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public function update( $new_instance, $old_instance ) {
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$instance = array();
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2016-02-23 02:02:26 +01:00
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$instance['title'] = sanitize_text_field( $new_instance['title'] );
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2015-09-01 15:49:21 +02:00
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$instance['taxonomy'] = stripslashes($new_instance['taxonomy']);
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return $instance;
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}
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/**
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2015-09-27 02:32:24 +02:00
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* Outputs the Tag Cloud widget settings form.
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*
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* @since 2.8.0
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* @access public
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*
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* @param array $instance Current settings.
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2015-09-01 15:49:21 +02:00
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*/
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public function form( $instance ) {
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$current_taxonomy = $this->_get_current_taxonomy($instance);
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2015-09-18 00:11:24 +02:00
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$title_id = $this->get_field_id( 'title' );
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$instance['title'] = ! empty( $instance['title'] ) ? esc_attr( $instance['title'] ) : '';
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echo '<p><label for="' . $title_id .'">' . __( 'Title:' ) . '</label>
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<input type="text" class="widefat" id="' . $title_id .'" name="' . $this->get_field_name( 'title' ) .'" value="' . $instance['title'] .'" />
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</p>';
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$taxonomies = get_taxonomies( array( 'show_tagcloud' => true ), 'object' );
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$id = $this->get_field_id( 'taxonomy' );
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$name = $this->get_field_name( 'taxonomy' );
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$input = '<input type="hidden" id="' . $id . '" name="' . $name . '" value="%s" />';
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switch ( count( $taxonomies ) ) {
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// No tag cloud supporting taxonomies found, display error message
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case 0:
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2015-11-08 21:35:27 +01:00
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echo '<p>' . __( 'The tag cloud will not be displayed since there are no taxonomies that support the tag cloud widget.' ) . '</p>';
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2015-09-18 00:11:24 +02:00
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printf( $input, '' );
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break;
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// Just a single tag cloud supporting taxonomy found, no need to display options
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case 1:
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$keys = array_keys( $taxonomies );
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$taxonomy = reset( $keys );
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printf( $input, esc_attr( $taxonomy ) );
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break;
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// More than one tag cloud supporting taxonomy found, display options
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default:
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printf(
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'<p><label for="%1$s">%2$s</label>' .
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'<select class="widefat" id="%1$s" name="%3$s">',
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$id,
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__( 'Taxonomy:' ),
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$name
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);
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foreach ( $taxonomies as $taxonomy => $tax ) {
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printf(
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'<option value="%s"%s>%s</option>',
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esc_attr( $taxonomy ),
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selected( $taxonomy, $current_taxonomy, false ),
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$tax->labels->name
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);
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}
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echo '</select></p>';
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}
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2015-09-01 15:49:21 +02:00
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}
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/**
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2015-09-27 02:32:24 +02:00
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* Retrieves the taxonomy for the current Tag cloud widget instance.
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*
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* @since 4.4.0
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* @access public
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*
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* @param array $instance Current settings.
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* @return string Name of the current taxonomy if set, otherwise 'post_tag'.
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2015-09-01 15:49:21 +02:00
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*/
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public function _get_current_taxonomy($instance) {
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if ( !empty($instance['taxonomy']) && taxonomy_exists($instance['taxonomy']) )
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return $instance['taxonomy'];
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return 'post_tag';
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}
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}
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