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<?php
/**
 * Post API: Walker_Page class
 *
 * @package WordPress
 * @subpackage Template
 * @since 4.4.0
 */

/**
 * Core walker class used to create an HTML list of pages.
 *
 * @since 2.1.0
 *
 * @see Walker
 */
class Walker_Page extends Walker {

/**
	 * What the class handles.
	 *
	 * @since 2.1.0
	 * @access public
	 * @var string
	 *
	 * @see Walker::$tree_type
	 */
	public $tree_type = 'page';

/**
	 * Database fields to use.
	 *
	 * @since 2.1.0
	 * @access private
	 * @var array
	 *
	 * @see Walker::$db_fields
	 * @todo Decouple this.
	 */
	public $db_fields = array( 'parent' => 'post_parent', 'id' => 'ID' );

/**
	 * Outputs the beginning of the current level in the tree before elements are output.
	 *
	 * @since 2.1.0
	 * @access public
	 *
	 * @see Walker::start_lvl()
	 *
	 * @param string $output Passed by reference. Used to append additional content.
	 * @param int    $depth  Optional. Depth of page. Used for padding. Default 0.
	 * @param array  $args   Optional. Arguments for outputting the next level.
	 *                       Default empty array.
	 */
	public function start_lvl( &$output, $depth = 0, $args = array() ) {
		if ( isset( $args['item_spacing'] ) && 'preserve' === $args['item_spacing'] ) {
			$t = "\t";
			$n = "\n";
		} else {
			$t = '';
			$n = '';
		}
		$indent = str_repeat( $t, $depth );
		$output .= "{$n}{$indent}<ul class='children'>{$n}";
	}

/**
	 * Outputs the end of the current level in the tree after elements are output.
	 *
	 * @since 2.1.0
	 * @access public
	 *
	 * @see Walker::end_lvl()
	 *
	 * @param string $output Passed by reference. Used to append additional content.
	 * @param int    $depth  Optional. Depth of page. Used for padding. Default 0.
	 * @param array  $args   Optional. Arguments for outputting the end of the current level.
	 *                       Default empty array.
	 */
	public function end_lvl( &$output, $depth = 0, $args = array() ) {
		if ( isset( $args['item_spacing'] ) && 'preserve' === $args['item_spacing'] ) {
			$t = "\t";
			$n = "\n";
		} else {
			$t = '';
			$n = '';
		}
		$indent = str_repeat( $t, $depth );
		$output .= "{$indent}</ul>{$n}";
	}

/**
	 * Outputs the beginning of the current element in the tree.
	 *
	 * @see Walker::start_el()
	 * @since 2.1.0
	 * @access public
	 *
	 * @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 ) ) {
				$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 ( $page->ID == get_option('page_for_posts') ) {
			$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 array   $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 ) );

if ( '' === $page->post_title ) {
			/* translators: %d: ID of a post */
			$page->post_title = sprintf( __( '#%d (no title)' ), $page->ID );
		}

$args['link_before'] = empty( $args['link_before'] ) ? '' : $args['link_before'];
		$args['link_after'] = empty( $args['link_after'] ) ? '' : $args['link_after'];

$output .= $indent . sprintf(
			'<li class="%s"><a href="%s">%s%s%s</a>',
			$css_classes,
			get_permalink( $page->ID ),
			$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']
		);

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 );
		}
	}

/**
	 * Outputs the end of the current element in the tree.
	 *
	 * @since 2.1.0
	 * @access public
	 *
	 * @see Walker::end_el()
	 *
	 * @param string  $output Used to append additional content. Passed by reference.
	 * @param WP_Post $page   Page data object. Not used.
	 * @param int     $depth  Optional. Depth of page. Default 0 (unused).
	 * @param array   $args   Optional. Array of arguments. Default empty array.
	 */
	public function end_el( &$output, $page, $depth = 0, $args = array() ) {
		if ( isset( $args['item_spacing'] ) && 'preserve' === $args['item_spacing'] ) {
			$t = "\t";
			$n = "\n";
		} else {
			$t = '';
			$n = '';
		}
		$output .= "</li>{$n}";
	}

}

[+] ..
[-] ms-settings.php [open]
[-] class-wp-comment.php [open]
[-] atomlib.php [open]
[-] rss-functions.php [open]
[-] class-walker-comment.php [open]
[-] class-wp-simplepie-sanitize-kses.php [open]
[-] registration.php [open]
[+] pomo
[-] class-wp-http-streams.php [open]
[-] post-thumbnail-template.php [open]
[+] random_compat
[-] wp-db.php [open]
[-] class.wp-styles.php [open]
[-] feed-atom.php [open]
[+] customize
[-] session.php [open]
[-] class-wp-admin-bar.php [open]
[-] class-wp-customize-section.php [open]
[-] widgets.php [open]
[-] wp-diff.php [open]
[-] class-wp-user.php [open]
[-] script-loader.php [open]
[-] class-wp-rewrite.php [open]
[-] class-wp-customize-panel.php [open]
[-] class-walker-category.php [open]
[-] ms-deprecated.php [open]
[-] comment-template.php [open]
[-] capabilities.php [open]
[-] link-template.php [open]
[-] class-wp-editor.php [open]
[-] class-wp-http-cookie.php [open]
[+] js
[-] feed-atom-comments.php [open]
[-] class-wp-text-diff-renderer-inline.php [open]
[-] functions.wp-styles.php [open]
[-] class-wp-user-query.php [open]
[-] class-phpass.php [open]
[-] feed-rss.php [open]
[+] images
[-] media.php [open]
[-] class-wp-oembed-controller.php [open]
[-] class-wp-http-curl.php [open]
[-] class-wp-walker.php [open]
[-] feed-rss2.php [open]
[-] author-template.php [open]
[-] class-feed.php [open]
[-] cron.php [open]
[-] class-walker-page-dropdown.php [open]
[+] ID3
[-] class-phpmailer.php [open]
[-] class-wp-dependency.php [open]
[-] meta.php [open]
[-] class-wp-widget-factory.php [open]
[-] kses.php [open]
[+] css
[-] class-wp-taxonomy.php [open]
[-] canonical.php [open]
[-] user.php [open]
[-] ms-default-constants.php [open]
[-] class-wp-image-editor-imagick.php [open]
[-] compat.php [open]
[+] certificates
[-] version.php [open]
[-] class-wp-customize-nav-menus.php [open]
[-] date.php [open]
[-] pluggable-deprecated.php [open]
[-] option.php [open]
[-] class-wp-hook.php [open]
[-] class-wp-comment-query.php [open]
[-] post-formats.php [open]
[-] formatting.php [open]
[-] class-http.php [open]
[-] class-wp-matchesmapregex.php [open]
[-] class-wp-locale.php [open]
[-] class-wp-http-requests-hooks.php [open]
[-] nav-menu.php [open]
[-] ms-load.php [open]
[-] class-wp-session-tokens.php [open]
[-] plugin.php [open]
[-] rest-api.php [open]
[+] fonts
[-] category.php [open]
[-] revision.php [open]
[-] class-smtp.php [open]
[-] nav-menu-template.php [open]
[-] class-wp-post-type.php [open]
[-] theme.php [open]
[-] class-snoopy.php [open]
[-] post.php [open]
[-] class.wp-scripts.php [open]
[+] Text
[-] class-wp-metadata-lazyloader.php [open]
[-] class-wp-locale-switcher.php [open]
[-] class-wp-term.php [open]
[-] category-template.php [open]
[-] wlwmanifest.xml [open]
[-] ms-blogs.php [open]
[-] registration-functions.php [open]
[-] class-wp-text-diff-renderer-table.php [open]
[-] class-wp-list-util.php [open]
[-] class-wp-network-query.php [open]
[-] http.php [open]
[-] rss.php [open]
[+] IXR
[-] general-template.php [open]
[-] post-template.php [open]
[-] query.php [open]
[-] class.wp-dependencies.php [open]
[+] Requests
[-] class-wp-term-query.php [open]
[-] class-wp-customize-control.php [open]
[-] ms-files.php [open]
[-] admin-bar.php [open]
[-] feed.php [open]
[-] class-wp-meta-query.php [open]
[-] class-wp-http-response.php [open]
[-] class-wp-customize-widgets.php [open]
[+] rest-api
[-] rewrite.php [open]
[-] class-wp-http-requests-response.php [open]
[-] class-wp-site.php [open]
[-] class-wp-embed.php [open]
[-] bookmark.php [open]
[-] class-wp-error.php [open]
[-] comment.php [open]
[-] class-wp-tax-query.php [open]
[-] class-requests.php [open]
[-] class-wp-feed-cache.php [open]
[-] shortcodes.php [open]
[-] class-wp-simplepie-file.php [open]
[-] locale.php [open]
[-] class-wp-ajax-response.php [open]
[-] class-wp-query.php [open]
[-] class-json.php [open]
[-] feed-rdf.php [open]
[-] class-wp-post.php [open]
[-] class-wp-network.php [open]
[-] deprecated.php [open]
[-] class-wp-customize-manager.php [open]
[-] l10n.php [open]
[-] load.php [open]
[-] vars.php [open]
[-] class-pop3.php [open]
[-] default-widgets.php [open]
[-] functions.wp-scripts.php [open]
[-] template.php [open]
[+] widgets
[-] bookmark-template.php [open]
[+] SimplePie
[-] cache.php [open]
[-] pluggable.php [open]
[-] class-wp-image-editor-gd.php [open]
[-] media-template.php [open]
[-] class-wp-roles.php [open]
[-] ms-functions.php [open]
[-] class-wp-theme.php [open]
[-] ms-default-filters.php [open]
[-] class-IXR.php [open]
[+] theme-compat
[-] class-wp-customize-setting.php [open]
[-] class-walker-page.php [open]
[-] class-wp-role.php [open]
[-] default-filters.php [open]
[-] class-wp-xmlrpc-server.php [open]
[-] taxonomy.php [open]
[-] class-wp-http-encoding.php [open]
[-] class-simplepie.php [open]
[-] class-wp-site-query.php [open]
[-] class-wp-http-ixr-client.php [open]
[-] class-walker-nav-menu.php [open]
[-] feed-rss2-comments.php [open]
[-] embed.php [open]
[-] template-loader.php [open]
[-] class-oembed.php [open]
[-] class-wp-feed-cache-transient.php [open]
[-] functions.php [open]
[-] class-walker-category-dropdown.php [open]
[-] class-wp.php [open]
[-] class-wp-user-meta-session-tokens.php [open]
[-] embed-template.php [open]
[-] default-constants.php [open]
[-] class-wp-widget.php [open]
[-] class-wp-image-editor.php [open]
[-] update.php [open]
[-] class-wp-http-proxy.php [open]