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

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

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1	<?php
2	/**
3	* Server-side rendering of the `core/calendar` block.
4	*
5	* @package WordPress
6	*/
7
8	/**
9	* Renders the `core/calendar` block on server.
10	*
11	* @since 5.2.0
12	*
13	* @global int $monthnum.
14	* @global int $year.
15	*
16	* @param array $attributes The block attributes.
17	*
18	* @return string Returns the block content.
19	*/
20	function gutenberg_render_block_core_calendar( $attributes ) {
21	global $monthnum, $year;
22
23	// Calendar shouldn't be rendered
24	// when there are no published posts on the site.
25	if ( ! gutenberg_block_core_calendar_has_published_posts() ) {
26	if ( is_user_logged_in() ) {
27	return '<div>' . __( 'The calendar block is hidden because there are no published posts.' ) . '</div>';
28	}
29	return '';
30	}
31
32	$previous_monthnum = $monthnum;
33	$previous_year = $year;
34
35	if ( isset( $attributes['month'] ) && isset( $attributes['year'] ) ) {
36	$permalink_structure = get_option( 'permalink_structure' );
37	if (
38	str_contains( $permalink_structure, '%monthnum%' ) &&
39	str_contains( $permalink_structure, '%year%' )
40	) {
41	$monthnum = $attributes['month'];
42	$year = $attributes['year'];
43	}
44	}
45
46	$color_block_styles = array();
47
48	// Text color.
49	$preset_text_color = array_key_exists( 'textColor', $attributes ) ? "var:preset\|color\|{$attributes['textColor']}" : null;
50	$custom_text_color = $attributes['style']['color']['text'] ?? null;
51	$color_block_styles['text'] = $preset_text_color ? $preset_text_color : $custom_text_color;
52
53	// Background Color.
54	$preset_background_color = array_key_exists( 'backgroundColor', $attributes ) ? "var:preset\|color\|{$attributes['backgroundColor']}" : null;
55	$custom_background_color = $attributes['style']['color']['background'] ?? null;
56	$color_block_styles['background'] = $preset_background_color ? $preset_background_color : $custom_background_color;
57
58	// Generate color styles and classes.
59	$styles = gutenberg_style_engine_get_styles( array( 'color' => $color_block_styles ), array( 'convert_vars_to_classnames' => true ) );
60	$inline_styles = empty( $styles['css'] ) ? '' : sprintf( ' style="%s"', esc_attr( $styles['css'] ) );
61	$classnames = empty( $styles['classnames'] ) ? '' : ' ' . esc_attr( $styles['classnames'] );
62	if ( isset( $attributes['style']['elements']['link']['color']['text'] ) ) {
63	$classnames .= ' has-link-color';
64	}
65	// Apply color classes and styles to the calendar.
66	$calendar = str_replace( '<table', '<table' . $inline_styles, get_calendar( true, false ) );
67	$calendar = str_replace( 'class="wp-calendar-table', 'class="wp-calendar-table' . $classnames, $calendar );
68
69	$wrapper_attributes = get_block_wrapper_attributes();
70	$output = sprintf(
71	'<div %1$s>%2$s</div>',
72	$wrapper_attributes,
73	$calendar
74	);
75
76	$monthnum = $previous_monthnum;
77	$year = $previous_year;
78
79	return $output;
80	}
81
82	/**
83	* Registers the `core/calendar` block on server.
84	*
85	* @since 5.2.0
86	*/
87	function gutenberg_register_block_core_calendar() {
88	register_block_type_from_metadata(
89	__DIR__ . '/calendar',
90	array(
91	'render_callback' => 'gutenberg_render_block_core_calendar',
92	)
93	);
94	}
95
96	add_action( 'init', 'gutenberg_register_block_core_calendar', 20 );
97
98	/**
99	* Returns whether or not there are any published posts.
100	*
101	* Used to hide the calendar block when there are no published posts.
102	* This compensates for a known Core bug: https://core.trac.wordpress.org/ticket/12016
103	*
104	* @since 5.9.0
105	*
106	* @return bool Has any published posts or not.
107	*/
108	function gutenberg_block_core_calendar_has_published_posts() {
109	// Multisite already has an option that stores the count of the published posts.
110	// Let's use that for multisites.
111	if ( is_multisite() ) {
112	return 0 < (int) get_option( 'post_count' );
113	}
114
115	// On single sites we try our own cached option first.
116	$has_published_posts = get_option( 'wp_calendar_block_has_published_posts', null );
117	if ( null !== $has_published_posts ) {
118	return (bool) $has_published_posts;
119	}
120
121	// No cache hit, let's update the cache and return the cached value.
122	return gutenberg_block_core_calendar_update_has_published_posts();
123	}
124
125	/**
126	* Queries the database for any published post and saves
127	* a flag whether any published post exists or not.
128	*
129	* @since 5.9.0
130	*
131	* @global wpdb $wpdb WordPress database abstraction object.
132	*
133	* @return bool Has any published posts or not.
134	*/
135	function gutenberg_block_core_calendar_update_has_published_posts() {
136	global $wpdb;
137	$has_published_posts = (bool) $wpdb->get_var( "SELECT 1 as test FROM {$wpdb->posts} WHERE post_type = 'post' AND post_status = 'publish' LIMIT 1" );
138	update_option( 'wp_calendar_block_has_published_posts', $has_published_posts );
139	return $has_published_posts;
140	}
141
142	// We only want to register these functions and actions when
143	// we are on single sites. On multi sites we use `post_count` option.
144	if ( ! is_multisite() ) {
145	/**
146	* Handler for updating the has published posts flag when a post is deleted.
147	*
148	* @since 5.9.0
149	*
150	* @param int $post_id Deleted post ID.
151	*/
152	function gutenberg_block_core_calendar_update_has_published_post_on_delete( $post_id ) {
153	$post = get_post( $post_id );
154
155	if ( ! $post \|\| 'publish' !== $post->post_status \|\| 'post' !== $post->post_type ) {
156	return;
157	}
158
159	gutenberg_block_core_calendar_update_has_published_posts();
160	}
161
162	/**
163	* Handler for updating the has published posts flag when a post status changes.
164	*
165	* @since 5.9.0
166	*
167	* @param string $new_status The status the post is changing to.
168	* @param string $old_status The status the post is changing from.
169	* @param WP_Post $post Post object.
170	*/
171	function gutenberg_block_core_calendar_update_has_published_post_on_transition_post_status( $new_status, $old_status, $post ) {
172	if ( $new_status === $old_status ) {
173	return;
174	}
175
176	if ( 'post' !== get_post_type( $post ) ) {
177	return;
178	}
179
180	if ( 'publish' !== $new_status && 'publish' !== $old_status ) {
181	return;
182	}
183
184	gutenberg_block_core_calendar_update_has_published_posts();
185	}
186
187	add_action( 'delete_post', 'gutenberg_block_core_calendar_update_has_published_post_on_delete' );
188	add_action( 'transition_post_status', 'gutenberg_block_core_calendar_update_has_published_post_on_transition_post_status', 10, 3 );
189	}
190