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See #36913. Built from https://develop.svn.wordpress.org/trunk@37518 git-svn-id: http://core.svn.wordpress.org/trunk@37486 1a063a9b-81f0-0310-95a4-ce76da25c4cd
182 lines
5.2 KiB
PHP
182 lines
5.2 KiB
PHP
<?php
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/**
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* Post API: Walker_Page class
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*
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* @package WordPress
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* @subpackage Template
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* @since 4.4.0
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*/
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/**
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* Core walker class used to create an HTML list of pages.
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*
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* @since 2.1.0
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*
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* @see Walker
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*/
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class Walker_Page extends Walker {
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/**
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* What the class handles.
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*
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* @since 2.1.0
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* @access public
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* @var string
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*
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* @see Walker::$tree_type
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*/
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public $tree_type = 'page';
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/**
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* Database fields to use.
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*
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* @since 2.1.0
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* @access private
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* @var array
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*
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* @see Walker::$db_fields
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* @todo Decouple this.
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*/
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public $db_fields = array( 'parent' => 'post_parent', 'id' => 'ID' );
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/**
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* Outputs the beginning of the current level in the tree before elements are output.
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*
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* @since 2.1.0
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* @access public
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*
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* @see Walker::start_lvl()
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*
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* @param string $output Passed by reference. Used to append additional content.
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* @param int $depth Optional. Depth of page. Used for padding. Default 0.
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* @param array $args Optional. Arguments for outputing the next level.
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* Default empty array.
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*/
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public function start_lvl( &$output, $depth = 0, $args = array() ) {
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$indent = str_repeat("\t", $depth);
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$output .= "\n$indent<ul class='children'>\n";
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}
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/**
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* Outputs the end of the current level in the tree after elements are output.
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*
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* @since 2.1.0
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* @access public
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*
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* @see Walker::end_lvl()
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*
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* @param string $output Passed by reference. Used to append additional content.
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* @param int $depth Optional. Depth of page. Used for padding. Default 0.
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* @param array $args Optional. Arguments for outputting the end of the current level.
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* Default empty array.
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*/
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public function end_lvl( &$output, $depth = 0, $args = array() ) {
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$indent = str_repeat("\t", $depth);
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$output .= "$indent</ul>\n";
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}
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/**
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* Outputs the beginning of the current element in the tree.
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*
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* @see Walker::start_el()
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* @since 2.1.0
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* @access public
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*
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* @param string $output Used to append additional content. Passed by reference.
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* @param WP_Post $page Page data object.
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* @param int $depth Optional. Depth of page. Used for padding. Default 0.
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* @param array $args Optional. Array of arguments. Default empty array.
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* @param int $current_page Optional. Page ID. Default 0.
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*/
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public function start_el( &$output, $page, $depth = 0, $args = array(), $current_page = 0 ) {
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if ( $depth ) {
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$indent = str_repeat( "\t", $depth );
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} else {
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$indent = '';
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}
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$css_class = array( 'page_item', 'page-item-' . $page->ID );
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if ( isset( $args['pages_with_children'][ $page->ID ] ) ) {
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$css_class[] = 'page_item_has_children';
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}
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if ( ! empty( $current_page ) ) {
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$_current_page = get_post( $current_page );
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if ( $_current_page && in_array( $page->ID, $_current_page->ancestors ) ) {
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$css_class[] = 'current_page_ancestor';
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}
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if ( $page->ID == $current_page ) {
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$css_class[] = 'current_page_item';
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} elseif ( $_current_page && $page->ID == $_current_page->post_parent ) {
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$css_class[] = 'current_page_parent';
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}
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} elseif ( $page->ID == get_option('page_for_posts') ) {
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$css_class[] = 'current_page_parent';
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}
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/**
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* Filters the list of CSS classes to include with each page item in the list.
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*
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* @since 2.8.0
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*
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* @see wp_list_pages()
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*
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* @param array $css_class An array of CSS classes to be applied
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* to each list item.
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* @param WP_Post $page Page data object.
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* @param int $depth Depth of page, used for padding.
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* @param array $args An array of arguments.
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* @param int $current_page ID of the current page.
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*/
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$css_classes = implode( ' ', apply_filters( 'page_css_class', $css_class, $page, $depth, $args, $current_page ) );
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if ( '' === $page->post_title ) {
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/* translators: %d: ID of a post */
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$page->post_title = sprintf( __( '#%d (no title)' ), $page->ID );
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}
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$args['link_before'] = empty( $args['link_before'] ) ? '' : $args['link_before'];
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$args['link_after'] = empty( $args['link_after'] ) ? '' : $args['link_after'];
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$output .= $indent . sprintf(
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'<li class="%s"><a href="%s">%s%s%s</a>',
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$css_classes,
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get_permalink( $page->ID ),
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$args['link_before'],
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/** This filter is documented in wp-includes/post-template.php */
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apply_filters( 'the_title', $page->post_title, $page->ID ),
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$args['link_after']
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);
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if ( ! empty( $args['show_date'] ) ) {
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if ( 'modified' == $args['show_date'] ) {
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$time = $page->post_modified;
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} else {
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$time = $page->post_date;
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}
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$date_format = empty( $args['date_format'] ) ? '' : $args['date_format'];
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$output .= " " . mysql2date( $date_format, $time );
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}
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}
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/**
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* Outputs the end of the current element in the tree.
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*
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* @since 2.1.0
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* @access public
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*
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* @see Walker::end_el()
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*
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* @param string $output Used to append additional content. Passed by reference.
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* @param WP_Post $page Page data object. Not used.
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* @param int $depth Optional. Depth of page. Default 0 (unused).
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* @param array $args Optional. Array of arguments. Default empty array.
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*/
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public function end_el( &$output, $page, $depth = 0, $args = array() ) {
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$output .= "</li>\n";
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}
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}
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