'parent',
'id' => 'term_id',
);
/**
* Starts the list before the elements are added.
*
* @since 2.1.0
*
* @see Walker::start_lvl()
*
* @param string $output Used to append additional content. Passed by reference.
* @param int $depth Optional. Depth of category. Used for tab indentation. Default 0.
* @param array $args Optional. An array of arguments. Will only append content if style argument
* value is 'list'. See wp_list_categories(). Default empty array.
*/
public function start_lvl( &$output, $depth = 0, $args = array() ) {
if ( 'list' != $args['style'] ) {
return;
}
$indent = str_repeat( "\t", $depth );
$output .= "$indent\n";
}
/**
* Ends the list of after the elements are added.
*
* @since 2.1.0
*
* @see Walker::end_lvl()
*
* @param string $output Used to append additional content. Passed by reference.
* @param int $depth Optional. Depth of category. Used for tab indentation. Default 0.
* @param array $args Optional. An array of arguments. Will only append content if style argument
* value is 'list'. See wp_list_categories(). Default empty array.
*/
public function end_lvl( &$output, $depth = 0, $args = array() ) {
if ( 'list' != $args['style'] ) {
return;
}
$indent = str_repeat( "\t", $depth );
$output .= "$indent
\n";
}
/**
* Starts the element output.
*
* @since 2.1.0
*
* @see Walker::start_el()
*
* @param string $output Used to append additional content (passed by reference).
* @param object $category Category data object.
* @param int $depth Optional. Depth of category in reference to parents. Default 0.
* @param array $args Optional. An array of arguments. See wp_list_categories(). Default empty array.
* @param int $id Optional. ID of the current category. Default 0.
*/
public function start_el( &$output, $category, $depth = 0, $args = array(), $id = 0 ) {
/** This filter is documented in wp-includes/category-template.php */
$cat_name = apply_filters(
'list_cats',
esc_attr( $category->name ),
$category
);
// Don't generate an element if the category name is empty.
if ( '' === $cat_name ) {
return;
}
$atts = array();
$atts['href'] = get_term_link( $category );
if ( $args['use_desc_for_title'] && ! empty( $category->description ) ) {
/**
* Filters the category description for display.
*
* @since 1.2.0
*
* @param string $description Category description.
* @param object $category Category object.
*/
$atts['title'] = strip_tags( apply_filters( 'category_description', $category->description, $category ) );
}
/**
* Filters the HTML attributes applied to a category list item's anchor element.
*
* @since 5.2.0
*
* @param array $atts {
* The HTML attributes applied to the list item's `` element, empty strings are ignored.
*
* @type string $href The href attribute.
* @type string $title The title attribute.
* }
* @param WP_Term $category Term data object.
* @param int $depth Depth of category, used for padding.
* @param array $args An array of arguments.
* @param int $id ID of the current category.
*/
$atts = apply_filters( 'category_list_link_attributes', $atts, $category, $depth, $args, $id );
$attributes = '';
foreach ( $atts as $attr => $value ) {
if ( ! empty( $value ) ) {
$value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
$attributes .= ' ' . $attr . '="' . $value . '"';
}
}
$link = sprintf(
'%s',
$attributes,
$cat_name
);
if ( ! empty( $args['feed_image'] ) || ! empty( $args['feed'] ) ) {
$link .= ' ';
if ( empty( $args['feed_image'] ) ) {
$link .= '(';
}
$link .= '';
}
$link .= '';
if ( empty( $args['feed_image'] ) ) {
$link .= ')';
}
}
if ( ! empty( $args['show_count'] ) ) {
$link .= ' (' . number_format_i18n( $category->count ) . ')';
}
if ( 'list' == $args['style'] ) {
$output .= "\tterm_id,
);
if ( ! empty( $args['current_category'] ) ) {
// 'current_category' can be an array, so we use `get_terms()`.
$_current_terms = get_terms(
array(
'taxonomy' => $category->taxonomy,
'include' => $args['current_category'],
'hide_empty' => false,
)
);
foreach ( $_current_terms as $_current_term ) {
if ( $category->term_id == $_current_term->term_id ) {
$css_classes[] = 'current-cat';
} elseif ( $category->term_id == $_current_term->parent ) {
$css_classes[] = 'current-cat-parent';
}
while ( $_current_term->parent ) {
if ( $category->term_id == $_current_term->parent ) {
$css_classes[] = 'current-cat-ancestor';
break;
}
$_current_term = get_term( $_current_term->parent, $category->taxonomy );
}
}
}
/**
* Filters the list of CSS classes to include with each category in the list.
*
* @since 4.2.0
*
* @see wp_list_categories()
*
* @param array $css_classes An array of CSS classes to be applied to each list item.
* @param object $category Category data object.
* @param int $depth Depth of page, used for padding.
* @param array $args An array of wp_list_categories() arguments.
*/
$css_classes = implode( ' ', apply_filters( 'category_css_class', $css_classes, $category, $depth, $args ) );
$css_classes = $css_classes ? ' class="' . esc_attr( $css_classes ) . '"' : '';
$output .= $css_classes;
$output .= ">$link\n";
} elseif ( isset( $args['separator'] ) ) {
$output .= "\t$link" . $args['separator'] . "\n";
} else {
$output .= "\t$link
\n";
}
}
/**
* Ends the element output, if needed.
*
* @since 2.1.0
*
* @see Walker::end_el()
*
* @param string $output Used to append additional content (passed by reference).
* @param object $page Not used.
* @param int $depth Optional. Depth of category. Not used.
* @param array $args Optional. An array of arguments. Only uses 'list' for whether should append
* to output. See wp_list_categories(). Default empty array.
*/
public function end_el( &$output, $page, $depth = 0, $args = array() ) {
if ( 'list' != $args['style'] ) {
return;
}
$output .= "\n";
}
}