gutenberg / build / scripts / block-library / categories.php

categories.php in Gutenberg 22.9.0, at build/scripts/block-library/categories.php

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1	<?php
2	/**
3	* Server-side rendering of the `core/categories` block.
4	*
5	* @package WordPress
6	*/
7
8	/**
9	* Renders the `core/categories` block on server.
10	*
11	* @since 5.0.0
12	* @since 6.7.0 Enable client-side rendering if enhancedPagination context is true.
13	*
14	* @param array $attributes The block attributes.
15	* @param string $content Block default content.
16	* @param WP_Block $block Block instance.
17	*
18	* @return string Returns the categories list/dropdown markup.
19	*/
20	function gutenberg_render_block_core_categories( $attributes, $content, $block ) {
21	static $block_id = 0;
22	++$block_id;
23
24	$taxonomy = get_taxonomy( $attributes['taxonomy'] );
25
26	$args = array(
27	'echo' => false,
28	'hierarchical' => ! empty( $attributes['showHierarchy'] ),
29	'orderby' => 'name',
30	'show_count' => ! empty( $attributes['showPostCounts'] ),
31	'taxonomy' => $attributes['taxonomy'],
32	'title_li' => '',
33	'hide_empty' => empty( $attributes['showEmpty'] ),
34	);
35	if ( ! empty( $attributes['showOnlyTopLevel'] ) && $attributes['showOnlyTopLevel'] ) {
36	$args['parent'] = 0;
37	}
38
39	if ( ! empty( $attributes['displayAsDropdown'] ) ) {
40	$id = 'wp-block-categories-' . $block_id;
41	$args['id'] = $id;
42	$args['name'] = $taxonomy->query_var;
43	$args['value_field'] = 'slug';
44	$args['show_option_none'] = sprintf(
45	/* translators: %s: taxonomy's singular name */
46	__( 'Select %s' ),
47	$taxonomy->labels->singular_name
48	);
49
50	// Pre-select the current term using query var.
51	$args['selected'] = get_query_var( $taxonomy->query_var );
52
53	$show_label = empty( $attributes['showLabel'] ) ? ' screen-reader-text' : '';
54	$default_label = $taxonomy->label;
55	$label_text = ! empty( $attributes['label'] ) ? wp_kses_post( $attributes['label'] ) : $default_label;
56	$wrapper_markup = '<div %1$s><label class="wp-block-categories__label' . $show_label . '" for="' . esc_attr( $id ) . '">' . $label_text . '</label>%2$s</div>';
57	$items_markup = wp_dropdown_categories( $args );
58	$type = 'dropdown';
59
60	if ( ! is_admin() ) {
61	// Inject the dropdown script immediately after the select dropdown.
62	$items_markup = preg_replace(
63	'#(?<=</select>)#',
64	gutenberg_build_dropdown_script_block_core_categories( $id ),
65	$items_markup,
66	1
67	);
68	}
69	} else {
70	$args['show_option_none'] = $taxonomy->labels->no_terms;
71
72	$wrapper_markup = '<ul %1$s>%2$s</ul>';
73	$items_markup = wp_list_categories( $args );
74	$type = 'list';
75
76	if ( ! empty( $block->context['enhancedPagination'] ) ) {
77	$p = new WP_HTML_Tag_Processor( $items_markup );
78	while ( $p->next_tag( 'a' ) ) {
79	$p->set_attribute( 'data-wp-on--click', 'core/query::actions.navigate' );
80	}
81	$items_markup = $p->get_updated_html();
82	}
83	}
84
85	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => "wp-block-categories-{$type} wp-block-categories-taxonomy-{$attributes['taxonomy']}" ) );
86
87	return sprintf(
88	$wrapper_markup,
89	$wrapper_attributes,
90	$items_markup
91	);
92	}
93
94	/**
95	* Generates the inline script for a categories dropdown field.
96	*
97	* @since 5.0.0
98	*
99	* @param string $dropdown_id ID of the dropdown field.
100	*
101	* @return string Returns the dropdown onChange redirection script.
102	*/
103	function gutenberg_build_dropdown_script_block_core_categories( $dropdown_id ) {
104	ob_start();
105
106	$exports = array( $dropdown_id, home_url() );
107	?>
108	<script>
109	( ( [ dropdownId, homeUrl ] ) => {
110	const dropdown = document.getElementById( dropdownId );
111	function gutenberg_onSelectChange() {
112	setTimeout( () => {
113	if ( 'escape' === dropdown.dataset.lastkey ) {
114	return;
115	}
116	// Only navigate if a valid term is selected (not the default "Select [taxonomy]" option)
117	if ( dropdown.value && dropdown.value !== '-1' && dropdown instanceof HTMLSelectElement ) {
118	const url = new URL( homeUrl );
119	url.searchParams.set( dropdown.name, dropdown.value );
120	location.href = url.href;
121	}
122	}, 250 );
123	}
124	function gutenberg_onKeyUp( event ) {
125	if ( 'Escape' === event.key ) {
126	dropdown.dataset.lastkey = 'escape';
127	} else {
128	delete dropdown.dataset.lastkey;
129	}
130	}
131	function gutenberg_onClick() {
132	delete dropdown.dataset.lastkey;
133	}
134	dropdown.addEventListener( 'keyup', gutenberg_onKeyUp );
135	dropdown.addEventListener( 'click', gutenberg_onClick );
136	dropdown.addEventListener( 'change', gutenberg_onSelectChange );
137	} )( <?php echo wp_json_encode( $exports, JSON_HEX_TAG \| JSON_UNESCAPED_SLASHES ); ?> );
138	</script>
139	<?php
140	return wp_get_inline_script_tag(
141	trim( str_replace( array( '<script>', '</script>' ), '', ob_get_clean() ) ) .
142	"\n//# sourceURL=" . rawurlencode( __FUNCTION__ )
143	);
144	}
145
146	/**
147	* Registers the `core/categories` block on server.
148	*
149	* @since 5.0.0
150	*/
151	function gutenberg_register_block_core_categories() {
152	register_block_type_from_metadata(
153	__DIR__ . '/categories',
154	array(
155	'render_callback' => 'gutenberg_render_block_core_categories',
156	)
157	);
158	}
159	add_action( 'init', 'gutenberg_register_block_core_categories', 20 );
160