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

categories.php in Gutenberg 18.9.0, at build/block-library/blocks/categories.php

109 lines 3.2 KB

Raw Download Zip

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	*
13	* @param array $attributes The block attributes.
14	*
15	* @return string Returns the categories list/dropdown markup.
16	*/
17	function gutenberg_render_block_core_categories( $attributes ) {
18	static $block_id = 0;
19	++$block_id;
20
21	$args = array(
22	'echo' => false,
23	'hierarchical' => ! empty( $attributes['showHierarchy'] ),
24	'orderby' => 'name',
25	'show_count' => ! empty( $attributes['showPostCounts'] ),
26	'title_li' => '',
27	'hide_empty' => empty( $attributes['showEmpty'] ),
28	);
29	if ( ! empty( $attributes['showOnlyTopLevel'] ) && $attributes['showOnlyTopLevel'] ) {
30	$args['parent'] = 0;
31	}
32
33	if ( ! empty( $attributes['displayAsDropdown'] ) ) {
34	$id = 'wp-block-categories-' . $block_id;
35	$args['id'] = $id;
36	$args['show_option_none'] = __( 'Select Category' );
37	$show_label = empty( $attributes['showLabel'] ) ? ' screen-reader-text' : '';
38	$default_label = __( 'Categories' );
39	$label_text = ! empty( $attributes['label'] ) ? $attributes['label'] : $default_label;
40	$wrapper_markup = '<div %1$s><label class="wp-block-categories__label' . $show_label . '" for="' . esc_attr( $id ) . '">' . $label_text . '</label>%2$s</div>';
41	$items_markup = wp_dropdown_categories( $args );
42	$type = 'dropdown';
43
44	if ( ! is_admin() ) {
45	// Inject the dropdown script immediately after the select dropdown.
46	$items_markup = preg_replace(
47	'#(?<=</select>)#',
48	gutenberg_build_dropdown_script_block_core_categories( $id ),
49	$items_markup,
50	1
51	);
52	}
53	} else {
54	$wrapper_markup = '<ul %1$s>%2$s</ul>';
55	$items_markup = wp_list_categories( $args );
56	$type = 'list';
57	}
58
59	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => "wp-block-categories-{$type}" ) );
60
61	return sprintf(
62	$wrapper_markup,
63	$wrapper_attributes,
64	$items_markup
65	);
66	}
67
68	/**
69	* Generates the inline script for a categories dropdown field.
70	*
71	* @since 5.0.0
72	*
73	* @param string $dropdown_id ID of the dropdown field.
74	*
75	* @return string Returns the dropdown onChange redirection script.
76	*/
77	function gutenberg_build_dropdown_script_block_core_categories( $dropdown_id ) {
78	ob_start();
79	?>
80	<script>
81	( function() {
82	var dropdown = document.getElementById( '<?php echo esc_js( $dropdown_id ); ?>' );
83	function gutenberg_onCatChange() {
84	if ( dropdown.options[ dropdown.selectedIndex ].value > 0 ) {
85	location.href = "<?php echo esc_url( home_url() ); ?>/?cat=" + dropdown.options[ dropdown.selectedIndex ].value;
86	}
87	}
88	dropdown.onchange = gutenberg_onCatChange;
89	})();
90	</script>
91	<?php
92	return wp_get_inline_script_tag( str_replace( array( '<script>', '</script>' ), '', ob_get_clean() ) );
93	}
94
95	/**
96	* Registers the `core/categories` block on server.
97	*
98	* @since 5.0.0
99	*/
100	function gutenberg_register_block_core_categories() {
101	register_block_type_from_metadata(
102	__DIR__ . '/categories',
103	array(
104	'render_callback' => 'gutenberg_render_block_core_categories',
105	)
106	);
107	}
108	add_action( 'init', 'gutenberg_register_block_core_categories', 20 );
109