Diff: STRATO-apps/wordpress_03/app/wp-includes/class-walker-page-dropdown.php

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1 + <?php
2 + /**
3 + * Post API: Walker_PageDropdown class
4 + *
5 + * @package WordPress
6 + * @subpackage Post
7 + * @since 4.4.0
8 + */
9 +
10 + /**
11 + * Core class used to create an HTML drop-down list of pages.
12 + *
13 + * @since 2.1.0
14 + *
15 + * @see Walker
16 + */
17 + class Walker_PageDropdown extends Walker {
18 +
19 + /**
20 + * What the class handles.
21 + *
22 + * @since 2.1.0
23 + * @var string
24 + *
25 + * @see Walker::$tree_type
26 + */
27 + public $tree_type = 'page';
28 +
29 + /**
30 + * Database fields to use.
31 + *
32 + * @since 2.1.0
33 + * @var string[]
34 + *
35 + * @see Walker::$db_fields
36 + * @todo Decouple this
37 + */
38 + public $db_fields = array(
39 + 'parent' => 'post_parent',
40 + 'id' => 'ID',
41 + );
42 +
43 + /**
44 + * Starts the element output.
45 + *
46 + * @since 2.1.0
47 + * @since 5.9.0 Renamed `$page` to `$data_object` and `$id` to `$current_object_id`
48 + * to match parent class for PHP 8 named parameter support.
49 + *
50 + * @see Walker::start_el()
51 + *
52 + * @param string $output Used to append additional content. Passed by reference.
53 + * @param WP_Post $data_object Page data object.
54 + * @param int $depth Optional. Depth of page in reference to parent pages.
55 + * Used for padding. Default 0.
56 + * @param array $args Optional. Uses 'selected' argument for selected page to
57 + * set selected HTML attribute for option element. Uses
58 + * 'value_field' argument to fill "value" attribute.
59 + * See wp_dropdown_pages(). Default empty array.
60 + * @param int $current_object_id Optional. ID of the current page. Default 0.
61 + */
62 + public function start_el( &$output, $data_object, $depth = 0, $args = array(), $current_object_id = 0 ) {
63 + // Restores the more descriptive, specific name for use within this method.
64 + $page = $data_object;
65 +
66 + $pad = str_repeat( '&nbsp;', $depth * 3 );
67 +
68 + if ( ! isset( $args['value_field'] ) || ! isset( $page->{$args['value_field']} ) ) {
69 + $args['value_field'] = 'ID';
70 + }
71 +
72 + $output .= "\t<option class=\"level-$depth\" value=\"" . esc_attr( $page->{$args['value_field']} ) . '"';
73 + if ( $page->ID === (int) $args['selected'] ) {
74 + $output .= ' selected="selected"';
75 + }
76 + $output .= '>';
77 +
78 + $title = $page->post_title;
79 + if ( '' === $title ) {
80 + /* translators: %d: ID of a post. */
81 + $title = sprintf( __( '#%d (no title)' ), $page->ID );
82 + }
83 +
84 + /**
85 + * Filters the page title when creating an HTML drop-down list of pages.
86 + *
87 + * @since 3.1.0
88 + *
89 + * @param string $title Page title.
90 + * @param WP_Post $page Page data object.
91 + */
92 + $title = apply_filters( 'list_pages', $title, $page );
93 +
94 + $output .= $pad . esc_html( $title );
95 + $output .= "</option>\n";
96 + }
97 + }
98 +