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Diffstat (limited to '')
-rw-r--r-- | wp-includes/class-walker-page-dropdown.php | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/wp-includes/class-walker-page-dropdown.php b/wp-includes/class-walker-page-dropdown.php new file mode 100644 index 0000000..08e5281 --- /dev/null +++ b/wp-includes/class-walker-page-dropdown.php @@ -0,0 +1,97 @@ +<?php +/** + * Post API: Walker_PageDropdown class + * + * @package WordPress + * @subpackage Post + * @since 4.4.0 + */ + +/** + * Core class used to create an HTML drop-down list of pages. + * + * @since 2.1.0 + * + * @see Walker + */ +class Walker_PageDropdown extends Walker { + + /** + * What the class handles. + * + * @since 2.1.0 + * @var string + * + * @see Walker::$tree_type + */ + public $tree_type = 'page'; + + /** + * Database fields to use. + * + * @since 2.1.0 + * @var string[] + * + * @see Walker::$db_fields + * @todo Decouple this + */ + public $db_fields = array( + 'parent' => 'post_parent', + 'id' => 'ID', + ); + + /** + * Starts the element output. + * + * @since 2.1.0 + * @since 5.9.0 Renamed `$page` to `$data_object` and `$id` to `$current_object_id` + * to match parent class for PHP 8 named parameter support. + * + * @see Walker::start_el() + * + * @param string $output Used to append additional content. Passed by reference. + * @param WP_Post $data_object Page data object. + * @param int $depth Optional. Depth of page in reference to parent pages. + * Used for padding. Default 0. + * @param array $args Optional. Uses 'selected' argument for selected page to + * set selected HTML attribute for option element. Uses + * 'value_field' argument to fill "value" attribute. + * See wp_dropdown_pages(). Default empty array. + * @param int $current_object_id Optional. ID of the current page. Default 0. + */ + public function start_el( &$output, $data_object, $depth = 0, $args = array(), $current_object_id = 0 ) { + // Restores the more descriptive, specific name for use within this method. + $page = $data_object; + + $pad = str_repeat( ' ', $depth * 3 ); + + if ( ! isset( $args['value_field'] ) || ! isset( $page->{$args['value_field']} ) ) { + $args['value_field'] = 'ID'; + } + + $output .= "\t<option class=\"level-$depth\" value=\"" . esc_attr( $page->{$args['value_field']} ) . '"'; + if ( $page->ID === (int) $args['selected'] ) { + $output .= ' selected="selected"'; + } + $output .= '>'; + + $title = $page->post_title; + if ( '' === $title ) { + /* translators: %d: ID of a post. */ + $title = sprintf( __( '#%d (no title)' ), $page->ID ); + } + + /** + * Filters the page title when creating an HTML drop-down list of pages. + * + * @since 3.1.0 + * + * @param string $title Page title. + * @param WP_Post $page Page data object. + */ + $title = apply_filters( 'list_pages', $title, $page ); + + $output .= $pad . esc_html( $title ); + $output .= "</option>\n"; + } +} |