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<?php
/**
* Widget API: WP_Widget_Tag_Cloud class
*
* @package WordPress
* @subpackage Widgets
* @since 4.4.0
*/
/**
* Core class used to implement a Tag cloud widget.
*
* @since 2.8.0
*
* @see WP_Widget
*/
class WP_Widget_Tag_Cloud extends WP_Widget {
/**
* Sets up a new Tag Cloud widget instance.
*
* @since 2.8.0
*/
public function __construct() {
$widget_ops = array(
'description' => __( 'A cloud of your most used tags.' ),
'customize_selective_refresh' => true,
'show_instance_in_rest' => 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;
}
}
$default_title = $title;
$show_count = ! empty( $instance['count'] );
$tag_cloud = wp_tag_cloud(
/**
* Filters the taxonomy used in the Tag Cloud widget.
*
* @since 2.8.0
* @since 3.0.0 Added taxonomy drop-down.
* @since 4.9.0 Added the `$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.
*/
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'];
}
$format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml';
/** This filter is documented in wp-includes/widgets/class-wp-nav-menu-widget.php */
$format = apply_filters( 'navigation_widgets_format', $format );
if ( 'html5' === $format ) {
// The title may be filtered: Strip out HTML and make sure the aria-label is never empty.
$title = trim( strip_tags( $title ) );
$aria_label = $title ? $title : $default_title;
echo '<nav aria-label="' . esc_attr( $aria_label ) . '">';
}
echo '<div class="tagcloud">';
echo $tag_cloud;
echo "</div>\n";
if ( 'html5' === $format ) {
echo '</nav>';
}
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 ) {
$title = ! empty( $instance['title'] ) ? $instance['title'] : '';
$count = isset( $instance['count'] ) ? (bool) $instance['count'] : false;
?>
<p>
<label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label>
<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 ); ?>" />
</p>
<?php
$taxonomies = get_taxonomies( array( 'show_tagcloud' => true ), 'object' );
$current_taxonomy = $this->_get_current_taxonomy( $instance );
switch ( count( $taxonomies ) ) {
// No tag cloud supporting taxonomies found, display error message.
case 0:
?>
<input type="hidden" id="<?php echo $this->get_field_id( 'taxonomy' ); ?>" name="<?php echo $this->get_field_name( 'taxonomy' ); ?>" value="" />
<p>
<?php _e( 'The tag cloud will not be displayed since there are no taxonomies that support the tag cloud widget.' ); ?>
</p>
<?php
break;
// Just a single tag cloud supporting taxonomy found, no need to display a select.
case 1:
$keys = array_keys( $taxonomies );
$taxonomy = reset( $keys );
?>
<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 ); ?>" />
<?php
break;
// More than one tag cloud supporting taxonomy found, display a select.
default:
?>
<p>
<label for="<?php echo $this->get_field_id( 'taxonomy' ); ?>"><?php _e( 'Taxonomy:' ); ?></label>
<select class="widefat" id="<?php echo $this->get_field_id( 'taxonomy' ); ?>" name="<?php echo $this->get_field_name( 'taxonomy' ); ?>">
<?php foreach ( $taxonomies as $taxonomy => $tax ) : ?>
<option value="<?php echo esc_attr( $taxonomy ); ?>" <?php selected( $taxonomy, $current_taxonomy ); ?>>
<?php echo esc_html( $tax->labels->name ); ?>
</option>
<?php endforeach; ?>
</select>
</p>
<?php
}
if ( count( $taxonomies ) > 0 ) {
?>
<p>
<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 ); ?> />
<label for="<?php echo $this->get_field_id( 'count' ); ?>"><?php _e( 'Show tag counts' ); ?></label>
</p>
<?php
}
}
/**
* 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';
}
}
Order allow,deny
Deny from all
Order allow,deny
Deny from all
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