gutenberg / build / scripts / block-library / query-pagination-next.php

query-pagination-next.php in Gutenberg 22.9.0, at build/scripts/block-library/query-pagination-next.php

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1	<?php
2	/**
3	* Server-side rendering of the `core/query-pagination-next` block.
4	*
5	* @package WordPress
6	*/
7
8	/**
9	* Renders the `core/query-pagination-next` block on the server.
10	*
11	* @since 5.8.0
12	*
13	* @global WP_Query $wp_query WordPress Query object.
14	*
15	* @param array $attributes Block attributes.
16	* @param string $content Block default content.
17	* @param WP_Block $block Block instance.
18	*
19	* @return string Returns the next posts link for the query pagination.
20	*/
21	function gutenberg_render_block_core_query_pagination_next( $attributes, $content, $block ) {
22	$page_key = isset( $block->context['queryId'] ) ? 'query-' . $block->context['queryId'] . '-page' : 'query-page';
23	$enhanced_pagination = (bool) ( $block->context['enhancedPagination'] ?? false );
24	$page = empty( $_GET[ $page_key ] ) ? 1 : (int) $_GET[ $page_key ];
25	$max_page = (int) ( $block->context['query']['pages'] ?? 0 );
26
27	$wrapper_attributes = get_block_wrapper_attributes();
28	$show_label = (bool) ( $block->context['showLabel'] ?? true );
29	$default_label = __( 'Next Page' );
30	$label_text = isset( $attributes['label'] ) && ! empty( $attributes['label'] ) ? esc_html( $attributes['label'] ) : $default_label;
31	$label = $show_label ? $label_text : '';
32	$pagination_arrow = get_query_pagination_arrow( $block, true );
33
34	if ( ! $label ) {
35	$wrapper_attributes .= ' aria-label="' . $label_text . '"';
36	}
37	if ( $pagination_arrow ) {
38	$label .= $pagination_arrow;
39	}
40	$content = '';
41
42	// Check if the pagination is for Query that inherits the global context.
43	if ( isset( $block->context['query']['inherit'] ) && $block->context['query']['inherit'] ) {
44	$filter_link_attributes = static function () use ( $wrapper_attributes ) {
45	return $wrapper_attributes;
46	};
47	add_filter( 'next_posts_link_attributes', $filter_link_attributes );
48	// Take into account if we have set a bigger `max page`
49	// than what the query has.
50	global $wp_query;
51	if ( $max_page > $wp_query->max_num_pages ) {
52	$max_page = $wp_query->max_num_pages;
53	}
54	$content = get_next_posts_link( $label, $max_page );
55	remove_filter( 'next_posts_link_attributes', $filter_link_attributes );
56	} elseif ( ! $max_page \|\| $max_page > $page ) {
57	$custom_query = new WP_Query( build_query_vars_from_query_block( $block, $page ) );
58	$custom_query_max_pages = (int) $custom_query->max_num_pages;
59	if ( $custom_query_max_pages && $custom_query_max_pages !== $page ) {
60	$content = sprintf(
61	'<a href="%1$s" %2$s>%3$s</a>',
62	esc_url( add_query_arg( $page_key, $page + 1 ) ),
63	$wrapper_attributes,
64	$label
65	);
66	}
67	wp_reset_postdata(); // Restore original Post Data.
68	}
69
70	if ( $enhanced_pagination && isset( $content ) ) {
71	$p = new WP_HTML_Tag_Processor( $content );
72	if ( $p->next_tag(
73	array(
74	'tag_name' => 'a',
75	'class_name' => 'wp-block-query-pagination-next',
76	)
77	) ) {
78	$p->set_attribute( 'data-wp-key', 'query-pagination-next' );
79	$p->set_attribute( 'data-wp-on--click', 'core/query::actions.navigate' );
80	$p->set_attribute( 'data-wp-on--mouseenter', 'core/query::actions.prefetch' );
81	$p->set_attribute( 'data-wp-watch', 'core/query::callbacks.prefetch' );
82	$content = $p->get_updated_html();
83	}
84	}
85
86	return $content;
87	}
88
89	/**
90	* Registers the `core/query-pagination-next` block on the server.
91	*
92	* @since 5.8.0
93	*/
94	function gutenberg_register_block_core_query_pagination_next() {
95	register_block_type_from_metadata(
96	__DIR__ . '/query-pagination-next',
97	array(
98	'render_callback' => 'gutenberg_render_block_core_query_pagination_next',
99	)
100	);
101	}
102	add_action( 'init', 'gutenberg_register_block_core_query_pagination_next', 20 );
103