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Role="navigation" was required for assistive technology to recognize HTML5 element's native ARIA roles while HTML5 and ARIA were being introduced. With the deprecation of IE11, the role attribute is only required when mapping elements that don't have native role. Props costdev, mukesh27. Fixes #54054. Built from https://develop.svn.wordpress.org/trunk@51967 git-svn-id: http://core.svn.wordpress.org/trunk@51556 1a063a9b-81f0-0310-95a4-ce76da25c4cd
221 lines
6.6 KiB
PHP
221 lines
6.6 KiB
PHP
<?php
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/**
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* Widget API: WP_Widget_Tag_Cloud class
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*
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* @package WordPress
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* @subpackage Widgets
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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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*/
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class WP_Widget_Tag_Cloud extends WP_Widget {
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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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*/
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public function __construct() {
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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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'show_instance_in_rest' => true,
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);
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parent::__construct( 'tag_cloud', __( 'Tag Cloud' ), $widget_ops );
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}
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/**
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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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*
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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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*/
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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 = $tax->labels->name;
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}
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}
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$default_title = $title;
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$show_count = ! empty( $instance['count'] );
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$tag_cloud = wp_tag_cloud(
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/**
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* Filters the taxonomy used in the Tag Cloud widget.
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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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* @since 4.9.0 Added the `$instance` parameter.
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*
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* @see wp_tag_cloud()
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*
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* @param array $args Args used for the tag cloud widget.
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* @param array $instance Array of settings for the current widget.
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*/
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apply_filters(
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'widget_tag_cloud_args',
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array(
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'taxonomy' => $current_taxonomy,
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'echo' => false,
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'show_count' => $show_count,
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),
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$instance
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)
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);
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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 . $args['after_title'];
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}
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$format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml';
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/** This filter is documented in wp-includes/widgets/class-wp-nav-menu-widget.php */
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$format = apply_filters( 'navigation_widgets_format', $format );
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if ( 'html5' === $format ) {
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// The title may be filtered: Strip out HTML and make sure the aria-label is never empty.
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$title = trim( strip_tags( $title ) );
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$aria_label = $title ? $title : $default_title;
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echo '<nav aria-label="' . esc_attr( $aria_label ) . '">';
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}
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echo '<div class="tagcloud">';
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echo $tag_cloud;
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echo "</div>\n";
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if ( 'html5' === $format ) {
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echo '</nav>';
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}
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echo $args['after_widget'];
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}
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/**
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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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*
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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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*/
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public function update( $new_instance, $old_instance ) {
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$instance = array();
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$instance['title'] = sanitize_text_field( $new_instance['title'] );
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$instance['count'] = ! empty( $new_instance['count'] ) ? 1 : 0;
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$instance['taxonomy'] = stripslashes( $new_instance['taxonomy'] );
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return $instance;
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}
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/**
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* Outputs the Tag Cloud widget settings form.
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*
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* @since 2.8.0
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*
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* @param array $instance Current settings.
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*/
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public function form( $instance ) {
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$title = ! empty( $instance['title'] ) ? $instance['title'] : '';
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$count = isset( $instance['count'] ) ? (bool) $instance['count'] : false;
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?>
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<p>
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<label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label>
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<input type="text" class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" value="<?php echo esc_attr( $title ); ?>" />
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</p>
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<?php
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$taxonomies = get_taxonomies( array( 'show_tagcloud' => true ), 'object' );
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$current_taxonomy = $this->_get_current_taxonomy( $instance );
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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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?>
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<input type="hidden" id="<?php echo $this->get_field_id( 'taxonomy' ); ?>" name="<?php echo $this->get_field_name( 'taxonomy' ); ?>" value="" />
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<p>
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<?php _e( 'The tag cloud will not be displayed since there are no taxonomies that support the tag cloud widget.' ); ?>
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</p>
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<?php
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break;
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// Just a single tag cloud supporting taxonomy found, no need to display a select.
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case 1:
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$keys = array_keys( $taxonomies );
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$taxonomy = reset( $keys );
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?>
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<input type="hidden" id="<?php echo $this->get_field_id( 'taxonomy' ); ?>" name="<?php echo $this->get_field_name( 'taxonomy' ); ?>" value="<?php echo esc_attr( $taxonomy ); ?>" />
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<?php
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break;
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// More than one tag cloud supporting taxonomy found, display a select.
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default:
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?>
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<p>
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<label for="<?php echo $this->get_field_id( 'taxonomy' ); ?>"><?php _e( 'Taxonomy:' ); ?></label>
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<select class="widefat" id="<?php echo $this->get_field_id( 'taxonomy' ); ?>" name="<?php echo $this->get_field_name( 'taxonomy' ); ?>">
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<?php foreach ( $taxonomies as $taxonomy => $tax ) : ?>
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<option value="<?php echo esc_attr( $taxonomy ); ?>" <?php selected( $taxonomy, $current_taxonomy ); ?>>
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<?php echo esc_html( $tax->labels->name ); ?>
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</option>
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<?php endforeach; ?>
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</select>
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</p>
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<?php
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}
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if ( count( $taxonomies ) > 0 ) {
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?>
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<p>
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<input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id( 'count' ); ?>" name="<?php echo $this->get_field_name( 'count' ); ?>" <?php checked( $count, true ); ?> />
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<label for="<?php echo $this->get_field_id( 'count' ); ?>"><?php _e( 'Show tag counts' ); ?></label>
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</p>
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<?php
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}
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}
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/**
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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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*
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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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*/
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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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}
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return 'post_tag';
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}
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}
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