← All changes | lib/block-supports/custom-css.php +84 -23 23.2.1 → trunk View file →

		@@ -7,21 +7,34 @@
7	7
8	8	/**
9	9	* Render the custom CSS stylesheet and add class name to block as required.
10	10	*
	11	+ * @since 7.0.0
	12	+ *
11	13	* @param array $parsed_block The parsed block.
12	14	* @return array The same parsed block with custom CSS class name added if appropriate.
	15	+ *
	16	+ * @phpstan-param array{
	17	+ * blockName: string|null,
	18	+ * attrs: array{
	19	+ * className?: string,
	20	+ * style?: array{
	21	+ * css?: string,
	22	+ * ...
	23	+ * },
	24	+ * ...
	25	+ * },
	26	+ * ...
	27	+ * } $parsed_block
13	28	*/
14	29	function gutenberg_render_custom_css_support_styles( $parsed_block ) {
15		- $block_type = WP_Block_Type_Registry::get_instance()->get_registered( $parsed_block['blockName'] );
16		-
17		- if ( ! block_has_support( $block_type, 'customCSS', true ) ) {
	30	+ $custom_css = $parsed_block['attrs']['style']['css'] ?? null;
	31	+ if ( ! is_string( $custom_css ) || '' === trim( $custom_css ) ) {
18	32	return $parsed_block;
19	33	}
20	34
21		- $custom_css = trim( $parsed_block['attrs']['style']['css'] ?? '' );
22		-
23		- if ( empty( $custom_css ) ) {
	35	+ $block_type = WP_Block_Type_Registry::get_instance()->get_registered( $parsed_block['blockName'] );
	36	+ if ( ! block_has_support( $block_type, 'customCSS', true ) ) {
24	37	return $parsed_block;
25	38	}
26	39
27	40	// Validate CSS doesn't contain HTML markup (same validation as global styles REST API).
		@@ -29,14 +42,15 @@
29	42	return $parsed_block;
30	43	}
31	44
32	45	// Generate a unique class name for this block instance.
33		- $class_name = wp_unique_id_from_values( $parsed_block, 'wp-custom-css-' );
34		- $updated_class_name = isset( $parsed_block['attrs']['className'] )
35		- ? $parsed_block['attrs']['className'] . " $class_name"
	46	+ $class_name = wp_unique_id_from_values( $parsed_block, 'wp-custom-css-' );
	47	+ $existing_class_name = $parsed_block['attrs']['className'] ?? null;
	48	+ $updated_class_name = is_string( $existing_class_name )
	49	+ ? "$existing_class_name $class_name"
36	50	: $class_name;
37	51
38		- _wp_array_set( $parsed_block, array( 'attrs', 'className' ), $updated_class_name );
	52	+ $parsed_block['attrs']['className'] = $updated_class_name;
39	53
40	54	// Process the custom CSS using the same method as global styles.
41	55	$selector = '.' . $class_name;
42	56	$processed_css = WP_Theme_JSON_Gutenberg::process_blocks_custom_css( $custom_css, $selector );
		@@ -41,15 +55,25 @@
41	55	$selector = '.' . $class_name;
42	56	$processed_css = WP_Theme_JSON_Gutenberg::process_blocks_custom_css( $custom_css, $selector );
43	57
44	58	if ( ! empty( $processed_css ) ) {
45		- /*
46		- * Register and add inline style for block custom CSS.
47		- * The style depends on global-styles to ensure custom CSS loads after
48		- * and can override global styles.
	59	+ /**
	60	+ * Reuse one handle so identical custom CSS is enqueued only once via
	61	+ * {@see wp_unique_id_from_values()}. Explicitly declare the `wp-block-library`
	62	+ * dependency so `global-styles` is guaranteed to print after it, preventing
	63	+ * block default styles from unintentionally overriding global styles.
49	64	*/
50		- wp_register_style( 'wp-block-custom-css', false, array( 'global-styles' ) );
51		- wp_add_inline_style( 'wp-block-custom-css', $processed_css );
	65	+ $handle = 'wp-block-custom-css';
	66	+ if ( ! wp_style_is( $handle, 'registered' ) ) {
	67	+ wp_register_style( $handle, false, array( 'wp-block-library', 'global-styles' ) );
	68	+ }
	69	+ $after_styles = wp_styles()->get_data( $handle, 'after' );
	70	+ if ( ! is_array( $after_styles ) ) {
	71	+ $after_styles = array();
	72	+ }
	73	+ if ( ! in_array( $processed_css, $after_styles, true ) ) {
	74	+ wp_add_inline_style( $handle, $processed_css );
	75	+ }
52	76	}
53	77
54	78	return $parsed_block;
55	79	}
		@@ -55,8 +79,10 @@
55	79	}
56	80
57	81	/**
58	82	* Enqueues the block custom CSS styles.
	83	+ *
	84	+ * @since 7.0.0
59	85	*/
60	86	function gutenberg_enqueue_block_custom_css() {
61	87	wp_enqueue_style( 'wp-block-custom-css' );
62	88	}
		@@ -63,28 +89,51 @@
63	89
64	90	/**
65	91	* Applies the custom CSS class name to the block's rendered HTML.
66	92	*
67		- * The class name is generated in `gutenberg_render_custom_css_support_styles`
	93	+ * The class name is generated in {@see gutenberg_render_custom_css_support_styles()}
68	94	* and stored in block attributes. This filter adds it to the actual markup.
69	95	*
	96	+ * @since 7.0.0
	97	+ *
70	98	* @param string $block_content Rendered block content.
71	99	* @param array $block Block object.
72		- * @return string Filtered block content.
	100	+ * @return string Filtered block content.
	101	+ *
	102	+ * @phpstan-param array{
	103	+ * attrs: array{
	104	+ * className?: string,
	105	+ * ...
	106	+ * },
	107	+ * ...
	108	+ * } $block
73	109	*/
74	110	function gutenberg_render_custom_css_class_name( $block_content, $block ) {
75		- $class_string = $block['attrs']['className'] ?? '';
76		- preg_match( '/\bwp-custom-css-\S+\b/', $class_string, $matches );
	111	+ $class_name_attr = $block['attrs']['className'] ?? null;
	112	+ $class_name_prefix = 'wp-custom-css-';
	113	+ if ( ! is_string( $class_name_attr ) || ! str_contains( $class_name_attr, $class_name_prefix ) ) {
	114	+ return $block_content;
	115	+ }
77	116
78		- if ( empty( $matches ) ) {
	117	+ // Parse out the 'wp-custom-css-*' class name added by gutenberg_render_custom_css_support_styles().
	118	+ $matched_class_name = null;
	119	+ $token_delimiter = " \t\f\r\n";
	120	+ $class_token = strtok( $class_name_attr, $token_delimiter );
	121	+ while ( false !== $class_token ) {
	122	+ if ( str_starts_with( $class_token, $class_name_prefix ) ) {
	123	+ $matched_class_name = $class_token;
	124	+ break;
	125	+ }
	126	+ $class_token = strtok( $token_delimiter );
	127	+ }
	128	+ if ( null === $matched_class_name ) {
79	129	return $block_content;
80	130	}
81	131
82	132	$tags = new WP_HTML_Tag_Processor( $block_content );
83		-
84	133	if ( $tags->next_tag() ) {
85	134	$tags->add_class( 'has-custom-css' );
86		- $tags->add_class( $matches[0] );
	135	+ $tags->add_class( $matched_class_name );
87	136	}
88	137
89	138	return $tags->get_updated_html();
90	139	}
		@@ -107,8 +156,10 @@
107	156
108	157	/**
109	158	* Registers the style block attribute for block types that support it.
110	159	*
	160	+ * @since 7.0.0
	161	+ *
111	162	* @param WP_Block_Type $block_type Block Type.
112	163	*/
113	164	function gutenberg_register_custom_css_support( $block_type ) {
114	165	// Setup attributes and styles within that if needed.
		@@ -136,8 +187,10 @@
136	187	* Uses WP_Block_Parser::next_token() to scan block tokens and surgically
137	188	* replace only the attribute JSON that changed — no parse_blocks() +
138	189	* serialize_blocks() round-trip needed.
139	190	*
	191	+ * @since 7.0.0
	192	+ *
140	193	* @param string $content Post content to filter, expected to be escaped with slashes.
141	194	* @return string Filtered post content with block custom CSS removed.
142	195	*/
143	196	function gutenberg_strip_custom_css_from_blocks( $content ) {
		@@ -216,8 +269,10 @@
216	269	}
217	270
218	271	/**
219	272	* Adds the filters to strip custom CSS from block content on save.
	273	+ *
	274	+ * @since 7.0.0
220	275	* @access private
221	276	*/
222	277	function gutenberg_custom_css_kses_init_filters() {
223	278	add_filter( 'content_save_pre', 'gutenberg_strip_custom_css_from_blocks', 8 );
		@@ -225,8 +280,10 @@
225	280	}
226	281
227	282	/**
228	283	* Removes the filters that strip custom CSS from block content on save.
	284	+ *
	285	+ * @since 7.0.0
229	286	* @access private
230	287	*/
231	288	function gutenberg_custom_css_remove_filters() {
232	289	remove_filter( 'content_save_pre', 'gutenberg_strip_custom_css_from_blocks', 8 );
		@@ -234,8 +291,10 @@
234	291	}
235	292
236	293	/**
237	294	* Registers the custom CSS content filters if the user does not have the edit_css capability.
	295	+ *
	296	+ * @since 7.0.0
238	297	* @access private
239	298	*/
240	299	function gutenberg_custom_css_kses_init() {
241	300	gutenberg_custom_css_remove_filters();
		@@ -249,8 +308,10 @@
249	308	*
250	309	* This filter is the last being executed on force_filtered_html_on_import.
251	310	* If the input of the filter is true it means we are in an import situation and should
252	311	* enable the custom CSS filters, independently of the user capabilities.
	312	+ *
	313	+ * @since 7.0.0
253	314	* @access private
254	315	*
255	316	* @param mixed $arg Input argument of the filter.
256	317	* @return mixed Input argument of the filter.