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91 lines
2.2 KiB
91 lines
2.2 KiB
<?php |
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/** |
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* Post API: Walker_PageDropdown class |
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* |
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* @package WordPress |
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* @subpackage Post |
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* @since 4.4.0 |
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*/ |
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/** |
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* Core class used to create an HTML drop-down 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_PageDropdown 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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* @var string |
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* |
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* @see Walker::$tree_type |
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*/ |
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public $tree_type = 'page'; |
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/** |
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* Database fields to use. |
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* |
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* @since 2.1.0 |
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* @var array |
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* |
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* @see Walker::$db_fields |
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* @todo Decouple this |
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*/ |
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public $db_fields = array( |
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'parent' => 'post_parent', |
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'id' => 'ID', |
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); |
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/** |
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* Starts the element output. |
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* |
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* @since 2.1.0 |
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* |
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* @see Walker::start_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. |
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* @param int $depth Optional. Depth of page in reference to parent pages. Used for padding. |
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* Default 0. |
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* @param array $args Optional. Uses 'selected' argument for selected page to set selected HTML |
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* attribute for option element. Uses 'value_field' argument to fill "value" |
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* attribute. See wp_dropdown_pages(). Default empty array. |
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* @param int $id Optional. ID of the current page. Default 0 (unused). |
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*/ |
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public function start_el( &$output, $page, $depth = 0, $args = array(), $id = 0 ) { |
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$pad = str_repeat( ' ', $depth * 3 ); |
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if ( ! isset( $args['value_field'] ) || ! isset( $page->{$args['value_field']} ) ) { |
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$args['value_field'] = 'ID'; |
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} |
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$output .= "\t<option class=\"level-$depth\" value=\"" . esc_attr( $page->{$args['value_field']} ) . '"'; |
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if ( $page->ID == $args['selected'] ) { |
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$output .= ' selected="selected"'; |
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} |
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$output .= '>'; |
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$title = $page->post_title; |
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if ( '' === $title ) { |
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/* translators: %d: ID of a post. */ |
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$title = sprintf( __( '#%d (no title)' ), $page->ID ); |
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} |
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/** |
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* Filters the page title when creating an HTML drop-down list of pages. |
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* |
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* @since 3.1.0 |
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* |
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* @param string $title Page title. |
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* @param WP_Post $page Page data object. |
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*/ |
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$title = apply_filters( 'list_pages', $title, $page ); |
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$output .= $pad . esc_html( $title ); |
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$output .= "</option>\n"; |
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} |
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}
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