You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
221 lines
6.6 KiB
PHP
221 lines
6.6 KiB
PHP
<?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';
|
|
}
|
|
}
|