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<?php
/**
* Custom page walker for this theme.
*
* @package WordPress
* @subpackage Twenty_Twenty
* @since 1.0.0
*/
if ( ! class_exists( 'TwentyTwenty_Walker_Page' ) ) {
/**
* CUSTOM PAGE WALKER
* A custom walker for pages.
*/
class TwentyTwenty_Walker_Page extends Walker_Page {
/**
* Outputs the beginning of the current element in the tree.
*
* @see Walker::start_el()
* @since 2.1.0
*
* @param string $output Used to append additional content. Passed by reference.
* @param WP_Post $page Page data object.
* @param int $depth Optional. Depth of page. Used for padding. Default 0.
* @param array $args Optional. Array of arguments. Default empty array.
* @param int $current_page Optional. Page ID. Default 0.
*/
public function start_el( &$output, $page, $depth = 0, $args = array(), $current_page = 0 ) {
if ( isset( $args['item_spacing'] ) && 'preserve' === $args['item_spacing'] ) {
$t = "\t";
$n = "\n";
} else {
$t = '';
$n = '';
}
if ( $depth ) {
$indent = str_repeat( $t, $depth );
} else {
$indent = '';
}
$css_class = array( 'page_item', 'page-item-' . $page->ID );
if ( isset( $args['pages_with_children'][ $page->ID ] ) ) {
$css_class[] = 'page_item_has_children';
}
if ( ! empty( $current_page ) ) {
$_current_page = get_post( $current_page );
if ( $_current_page && in_array( $page->ID, $_current_page->ancestors, true ) ) {
$css_class[] = 'current_page_ancestor';
}
if ( $page->ID === $current_page ) {
$css_class[] = 'current_page_item';
} elseif ( $_current_page && $page->ID === $_current_page->post_parent ) {
$css_class[] = 'current_page_parent';
}
} elseif ( get_option( 'page_for_posts' ) === $page->ID ) {
$css_class[] = 'current_page_parent';
}
/**
* Filters the list of CSS classes to include with each page item in the list.
*
* @since 2.8.0
*
* @see wp_list_pages()
*
* @param string[] $css_class An array of CSS classes to be applied to each list item.
* @param WP_Post $page Page data object.
* @param int $depth Depth of page, used for padding.
* @param array $args An array of arguments.
* @param int $current_page ID of the current page.
*/
$css_classes = implode( ' ', apply_filters( 'page_css_class', $css_class, $page, $depth, $args, $current_page ) );
$css_classes = $css_classes ? ' class="' . esc_attr( $css_classes ) . '"' : '';
if ( '' === $page->post_title ) {
/* translators: %d: ID of a post */
$page->post_title = sprintf( __( '#%d (no title)', 'twentytwenty' ), $page->ID );
}
$args['link_before'] = empty( $args['link_before'] ) ? '' : $args['link_before'];
$args['link_after'] = empty( $args['link_after'] ) ? '' : $args['link_after'];
$atts = array();
$atts['href'] = get_permalink( $page->ID );
$atts['aria-current'] = ( $page->ID === $current_page ) ? 'page' : '';
/**
* Filters the HTML attributes applied to a page menu item's anchor element.
*
* @since 4.8.0
*
* @param array $atts {
* The HTML attributes applied to the menu item's `<a>` element, empty strings are ignored.
*
* @type string $href The href attribute.
* @type string $aria_current The aria-current attribute.
* }
* @param WP_Post $page Page data object.
* @param int $depth Depth of page, used for padding.
* @param array $args An array of arguments.
* @param int $current_page ID of the current page.
*/
$atts = apply_filters( 'page_menu_link_attributes', $atts, $page, $depth, $args, $current_page );
$attributes = '';
foreach ( $atts as $attr => $value ) {
if ( ! empty( $value ) ) {
$value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
$attributes .= ' ' . $attr . '="' . $value . '"';
}
}
$args['list_item_before'] = '';
$args['list_item_after'] = '';
// Wrap the link in a div and append a sub menu toggle.
if ( isset( $args['show_toggles'] ) && true === $args['show_toggles'] ) {
// Wrap the menu item link contents in a div, used for positioning.
$args['list_item_before'] = '<div class="ancestor-wrapper">';
$args['list_item_after'] = '';
// Add a toggle to items with children.
if ( isset( $args['pages_with_children'][ $page->ID ] ) ) {
$toggle_target_string = '.menu-modal .page-item-' . $page->ID . ' > ul';
$toggle_duration = twentytwenty_toggle_duration();
// Add the sub menu toggle.
$args['list_item_after'] .= '<button class="toggle sub-menu-toggle fill-children-current-color" data-toggle-target="' . $toggle_target_string . '" data-toggle-type="slidetoggle" data-toggle-duration="' . absint( $toggle_duration ) . '" aria-expanded="false"><span class="screen-reader-text">' . __( 'Show sub menu', 'twentytwenty' ) . '</span>' . twentytwenty_get_theme_svg( 'chevron-down' ) . '</button>';
}
// Close the wrapper.
$args['list_item_after'] .= '</div><!-- .ancestor-wrapper -->';
}
// Add icons to menu items with children.
if ( isset( $args['show_sub_menu_icons'] ) && true === $args['show_sub_menu_icons'] ) {
if ( isset( $args['pages_with_children'][ $page->ID ] ) ) {
$args['list_item_after'] = '<span class="icon"></span>';
}
}
$output .= $indent . sprintf(
'<li%s>%s<a%s>%s%s%s</a>%s',
$css_classes,
$args['list_item_before'],
$attributes,
$args['link_before'],
/** This filter is documented in wp-includes/post-template.php */
apply_filters( 'the_title', $page->post_title, $page->ID ),
$args['link_after'],
$args['list_item_after']
);
if ( ! empty( $args['show_date'] ) ) {
if ( 'modified' === $args['show_date'] ) {
$time = $page->post_modified;
} else {
$time = $page->post_date;
}
$date_format = empty( $args['date_format'] ) ? '' : $args['date_format'];
$output .= ' ' . mysql2date( $date_format, $time );
}
}
}
}
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