flex-posts / includes / category.php

category.php in Flex Posts – Responsive Posts Block 2.1.0, at includes/category.php

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1	<?php
2	/**
3	* Category color functions
4	*
5	* @package Flex Posts
6	*/
7
8	if ( ! defined( 'ABSPATH' ) ) {
9	exit;
10	}
11
12	/**
13	* Register category color meta
14	*/
15	function flex_posts_register_color_meta() {
16	register_term_meta(
17	'category',
18	'fp_color',
19	array(
20	'type' => 'string',
21	'description' => __( 'Category color', 'flex-posts' ),
22	'single' => true,
23	'sanitize_callback' => 'sanitize_hex_color',
24	'show_in_rest' => true,
25	)
26	);
27	}
28	add_action( 'init', 'flex_posts_register_color_meta' );
29
30	/**
31	* Add color field to category edit form
32	*
33	* @param obj $term Term object.
34	*/
35	function flex_posts_edit_color_field( $term ) {
36	$color = get_term_meta( $term->term_id, 'fp_color', true );
37	?>
38	<tr class="form-field">
39	<th scope="row"><label for="fp_color"><?php esc_html_e( 'Color', 'flex-posts' ); ?></label></th>
40	<td>
41	<input name="fp_color" id="fp_color" type="text" value="<?php echo esc_attr( $color ); ?>" class="wp-color-picker-field">
42	</td>
43	</tr>
44	<?php
45	}
46	add_action( 'category_edit_form_fields', 'flex_posts_edit_color_field' );
47
48	/**
49	* Add color field to category add form
50	*/
51	function flex_posts_add_color_field() {
52	?>
53	<div class="form-field">
54	<label for="fp_color"><?php esc_html_e( 'Color', 'flex-posts' ); ?></label>
55	<input name="fp_color" id="fp_color" type="text" value="" class="wp-color-picker-field">
56	</div>
57	<?php
58	}
59	add_action( 'category_add_form_fields', 'flex_posts_add_color_field' );
60
61	/**
62	* Save category color meta
63	*
64	* @param int $term_id Term ID.
65	*/
66	function flex_posts_save_color_field( $term_id ) {
67	if ( ! isset( $_POST['fp_color'] ) ) {
68	return;
69	}
70
71	// Re-verify the nonce that core set for whichever term form was submitted.
72	$verified = false;
73	if ( isset( $_POST['_wpnonce'] ) ) {
74	$verified = wp_verify_nonce( sanitize_key( $_POST['_wpnonce'] ), 'update-tag_' . $term_id );
75	} elseif ( isset( $_POST['_wpnonce_add-tag'] ) ) {
76	$verified = wp_verify_nonce( sanitize_key( $_POST['_wpnonce_add-tag'] ), 'add-tag' );
77	} elseif ( isset( $_POST['_ajax_nonce-add-tag-category'] ) ) {
78	$verified = wp_verify_nonce( sanitize_key( $_POST['_ajax_nonce-add-tag-category'] ), 'add-tag' );
79	}
80
81	if ( ! $verified ) {
82	return;
83	}
84
85	$color = sanitize_hex_color( wp_unslash( $_POST['fp_color'] ) );
86	update_term_meta(
87	$term_id,
88	'fp_color',
89	$color
90	);
91	}
92	add_action( 'edited_category', 'flex_posts_save_color_field' );
93	add_action( 'create_category', 'flex_posts_save_color_field' );
94
95	/**
96	* Enqueue color picker and initialize
97	*
98	* @param string $hook Hook.
99	*/
100	function flex_posts_enqueue_admin_color_picker( $hook ) {
101	if ( 'edit-tags.php' !== $hook && 'term.php' !== $hook ) {
102	return;
103	}
104
105	$screen = get_current_screen();
106	if ( ! $screen \|\| 'category' !== $screen->taxonomy ) {
107	return;
108	}
109
110	wp_enqueue_style( 'wp-color-picker' );
111	wp_enqueue_script( 'wp-color-picker' );
112
113	add_action(
114	'admin_footer',
115	function() {
116	/**
117	* Filter: flex_posts_color_palettes
118	*
119	* If a theme or plugin wants to supply custom palettes, return a
120	* non-empty indexed array of hex color strings. If the filter
121	* returns null or an empty value, the picker will use WordPress's
122	* built-in default palettes.
123	*
124	* @param array\|null $palettes Array of hex colors or null to use WP defaults.
125	*/
126	$palettes = apply_filters( 'flex_posts_color_palettes', null );
127
128	$fp_palettes = array();
129	if ( is_array( $palettes ) && ! empty( $palettes ) ) {
130	foreach ( $palettes as $color ) {
131	$color = sanitize_hex_color( $color );
132	if ( ! empty( $color ) ) {
133	$fp_palettes[] = $color;
134	}
135	}
136	}
137	?>
138	<script type="text/javascript">
139	jQuery(document).ready(function($){
140	<?php if ( ! empty( $fp_palettes ) ) : ?>
141	var fpPalettes = <?php echo wp_json_encode( $fp_palettes ); ?>;
142
143	$('.wp-color-picker-field').wpColorPicker({
144	palettes: fpPalettes
145	});
146	<?php else : ?>
147	$('.wp-color-picker-field').wpColorPicker();
148	<?php endif; ?>
149	});
150	</script>
151	<?php
152	}
153	);
154	}
155	add_action( 'admin_enqueue_scripts', 'flex_posts_enqueue_admin_color_picker' );
156
157	/**
158	* Add a "Color" column to the Categories list table in WP Admin.
159	*
160	* @param array $columns Existing columns.
161	* @return array Modified columns with fp_color added.
162	*/
163	function flex_posts_add_category_columns( $columns ) {
164	$columns['fp_color'] = __( 'Color', 'flex-posts' );
165	return $columns;
166	}
167	add_filter( 'manage_edit-category_columns', 'flex_posts_add_category_columns' );
168
169	/**
170	* Render the content for the custom "Color" category column.
171	*
172	* @param string $deprecated Deprecated (unused).
173	* @param string $column Column name.
174	* @param int $term_id Term ID.
175	*/
176	function flex_posts_render_category_color_column( $deprecated, $column, $term_id ) {
177	if ( 'fp_color' !== $column ) {
178	return;
179	}
180
181	$color = get_term_meta( $term_id, 'fp_color', true );
182	if ( empty( $color ) ) {
183	echo ''; // no color set.
184	return;
185	}
186
187	echo '<span style="display:inline-block;width:18px;height:18px;vertical-align:middle;margin-right:8px;border:1px solid #ddd;background:' . esc_attr( $color ) . ';"></span><span>' . esc_html( $color ) . '</span>';
188	}
189	add_action( 'manage_category_custom_column', 'flex_posts_render_category_color_column', 10, 3 );
190