1<?php
2/**
3 * Server-side rendering of the `core/home-link` block.
4 *
5 * @package WordPress
6 */
7
8/**
9 * Build an array with CSS classes and inline styles defining the colors
10 * which will be applied to the home link markup in the front-end.
11 *
12 * @since 6.0.0
13 *
14 * @param array $context home link block context.
15 * @return array Colors CSS classes and inline styles.
16 */
17function block_core_home_link_build_css_colors( $context ) {
18 $colors = array(
19 'css_classes' => array(),
20 'inline_styles' => '',
21 );
22
23 // Text color.
24 $has_named_text_color = array_key_exists( 'textColor', $context );
25 $has_custom_text_color = isset( $context['style']['color']['text'] );
26
27 // If has text color.
28 if ( $has_custom_text_color || $has_named_text_color ) {
29 // Add has-text-color class.
30 $colors['css_classes'][] = 'has-text-color';
31 }
32
33 if ( $has_named_text_color ) {
34 // Add the color class.
35 $colors['css_classes'][] = sprintf( 'has-%s-color', $context['textColor'] );
36 } elseif ( $has_custom_text_color ) {
37 // Add the custom color inline style.
38 $colors['inline_styles'] .= sprintf( 'color: %s;', $context['style']['color']['text'] );
39 }
40
41 // Background color.
42 $has_named_background_color = array_key_exists( 'backgroundColor', $context );
43 $has_custom_background_color = isset( $context['style']['color']['background'] );
44
45 // If has background color.
46 if ( $has_custom_background_color || $has_named_background_color ) {
47 // Add has-background class.
48 $colors['css_classes'][] = 'has-background';
49 }
50
51 if ( $has_named_background_color ) {
52 // Add the background-color class.
53 $colors['css_classes'][] = sprintf( 'has-%s-background-color', $context['backgroundColor'] );
54 } elseif ( $has_custom_background_color ) {
55 // Add the custom background-color inline style.
56 $colors['inline_styles'] .= sprintf( 'background-color: %s;', $context['style']['color']['background'] );
57 }
58
59 return $colors;
60}
61
62/**
63 * Build an array with CSS classes and inline styles defining the font sizes
64 * which will be applied to the home link markup in the front-end.
65 *
66 * @since 6.0.0
67 *
68 * @param array $context Home link block context.
69 * @return array Font size CSS classes and inline styles.
70 */
71function block_core_home_link_build_css_font_sizes( $context ) {
72 // CSS classes.
73 $font_sizes = array(
74 'css_classes' => array(),
75 'inline_styles' => '',
76 );
77
78 $has_named_font_size = array_key_exists( 'fontSize', $context );
79 $has_custom_font_size = isset( $context['style']['typography']['fontSize'] );
80
81 if ( $has_named_font_size ) {
82 // Add the font size class.
83 $font_sizes['css_classes'][] = sprintf( 'has-%s-font-size', $context['fontSize'] );
84 } elseif ( $has_custom_font_size ) {
85 // Add the custom font size inline style.
86 $font_sizes['inline_styles'] = sprintf( 'font-size: %s;', $context['style']['typography']['fontSize'] );
87 }
88
89 return $font_sizes;
90}
91
92/**
93 * Builds an array with classes and style for the li wrapper
94 *
95 * @since 6.0.0
96 *
97 * @param array $context Home link block context.
98 * @return string The li wrapper attributes.
99 */
100function block_core_home_link_build_li_wrapper_attributes( $context ) {
101 $colors = block_core_home_link_build_css_colors( $context );
102 $font_sizes = block_core_home_link_build_css_font_sizes( $context );
103 $classes = array_merge(
104 $colors['css_classes'],
105 $font_sizes['css_classes']
106 );
107 $style_attribute = ( $colors['inline_styles'] . $font_sizes['inline_styles'] );
108 $classes[] = 'wp-block-navigation-item';
109
110 if ( is_front_page() ) {
111 $classes[] = 'current-menu-item';
112 } elseif ( is_home() && ( (int) get_option( 'page_for_posts' ) !== get_queried_object_id() ) ) {
113 // Edge case where the Reading settings has a posts page set but not a static homepage.
114 $classes[] = 'current-menu-item';
115 }
116
117 $wrapper_attributes = get_block_wrapper_attributes(
118 array(
119 'class' => implode( ' ', $classes ),
120 'style' => $style_attribute,
121 )
122 );
123
124 return $wrapper_attributes;
125}
126
127/**
128 * Renders the `core/home-link` block.
129 *
130 * @since 6.0.0
131 *
132 * @param array $attributes The block attributes.
133 * @param string $content The saved content.
134 * @param WP_Block $block The parsed block.
135 *
136 * @return string Returns the post content with the home url added.
137 */
138function render_block_core_home_link( $attributes, $content, $block ) {
139 if ( empty( $attributes['label'] ) ) {
140 $attributes['label'] = __( 'Home' );
141 }
142 $aria_current = '';
143
144 if ( is_front_page() ) {
145 $aria_current = ' aria-current="page"';
146 } elseif ( is_home() && ( (int) get_option( 'page_for_posts' ) !== get_queried_object_id() ) ) {
147 // Edge case where the Reading settings has a posts page set but not a static homepage.
148 $aria_current = ' aria-current="page"';
149 }
150
151 return sprintf(
152 '<li %1$s><a class="wp-block-home-link__content wp-block-navigation-item__content" href="%2$s" rel="home"%3$s>%4$s</a></li>',
153 block_core_home_link_build_li_wrapper_attributes( $block->context ),
154 esc_url( home_url() ),
155 $aria_current,
156 wp_kses_post( $attributes['label'] )
157 );
158}
159
160/**
161 * Register the home block
162 *
163 * @since 6.0.0
164 *
165 * @uses render_block_core_home_link()
166 * @throws WP_Error An WP_Error exception parsing the block definition.
167 */
168function register_block_core_home_link() {
169 register_block_type_from_metadata(
170 __DIR__ . '/home-link',
171 array(
172 'render_callback' => 'render_block_core_home_link',
173 )
174 );
175}
176add_action( 'init', 'register_block_core_home_link' );
177