| @@ -7,32 +7,23 @@ | ||
| 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. |
| 13 | - * | |
| 14 | - * @phpstan-param array{ | |
| 15 | - * blockName: string|null, | |
| 16 | - * attrs: array{ | |
| 17 | - * className?: string, | |
| 18 | - * style?: array{ | |
| 19 | - * css?: string, | |
| 20 | - * ... | |
| 21 | - * }, | |
| 22 | - * ... | |
| 23 | - * }, | |
| 24 | - * ... | |
| 25 | - * } $parsed_block | |
| 26 | 15 | */ |
| 27 | 16 | function gutenberg_render_custom_css_support_styles( $parsed_block ) { |
| 28 | - $custom_css = $parsed_block['attrs']['style']['css'] ?? null; | |
| 29 | - if ( ! is_string( $custom_css ) || '' === trim( $custom_css ) ) { | |
| 17 | + $block_type = WP_Block_Type_Registry::get_instance()->get_registered( $parsed_block['blockName'] ); | |
| 18 | + | |
| 19 | + if ( ! block_has_support( $block_type, 'customCSS', true ) ) { | |
| 30 | 20 | return $parsed_block; |
| 31 | 21 | } |
| 32 | 22 | |
| 33 | - $block_type = WP_Block_Type_Registry::get_instance()->get_registered( $parsed_block['blockName'] ); | |
| 34 | - if ( ! block_has_support( $block_type, 'customCSS', true ) ) { | |
| 23 | + $custom_css = trim( $parsed_block['attrs']['style']['css'] ?? '' ); | |
| 24 | + | |
| 25 | + if ( empty( $custom_css ) ) { | |
| 35 | 26 | return $parsed_block; |
| 36 | 27 | } |
| 37 | 28 | |
| 38 | 29 | // Validate CSS doesn't contain HTML markup (same validation as global styles REST API). |
| @@ -40,12 +31,11 @@ | ||
| 40 | 31 | return $parsed_block; |
| 41 | 32 | } |
| 42 | 33 | |
| 43 | 34 | // Generate a unique class name for this block instance. |
| 44 | - $class_name = wp_unique_id_from_values( $parsed_block, 'wp-custom-css-' ); | |
| 45 | - $existing_class_name = $parsed_block['attrs']['className'] ?? null; | |
| 46 | - $updated_class_name = is_string( $existing_class_name ) | |
| 47 | - ? "$existing_class_name $class_name" | |
| 35 | + $class_name = wp_unique_id_from_values( $parsed_block, 'wp-custom-css-' ); | |
| 36 | + $updated_class_name = isset( $parsed_block['attrs']['className'] ) | |
| 37 | + ? $parsed_block['attrs']['className'] . " $class_name" | |
| 48 | 38 | : $class_name; |
| 49 | 39 | |
| 50 | 40 | _wp_array_set( $parsed_block, array( 'attrs', 'className' ), $updated_class_name ); |
| 51 | 41 | |
| @@ -67,8 +57,10 @@ | ||
| 67 | 57 | } |
| 68 | 58 | |
| 69 | 59 | /** |
| 70 | 60 | * Enqueues the block custom CSS styles. |
| 61 | + * | |
| 62 | + * @since 7.0.0 | |
| 71 | 63 | */ |
| 72 | 64 | function gutenberg_enqueue_block_custom_css() { |
| 73 | 65 | wp_enqueue_style( 'wp-block-custom-css' ); |
| 74 | 66 | } |
| @@ -75,50 +67,30 @@ | ||
| 75 | 67 | |
| 76 | 68 | /** |
| 77 | 69 | * Applies the custom CSS class name to the block's rendered HTML. |
| 78 | 70 | * |
| 79 | - * The class name is generated in {@see gutenberg_render_custom_css_support_styles()} | |
| 71 | + * The class name is generated in `gutenberg_render_custom_css_support_styles` | |
| 80 | 72 | * and stored in block attributes. This filter adds it to the actual markup. |
| 81 | 73 | * |
| 74 | + * @since 7.0.0 | |
| 75 | + * | |
| 82 | 76 | * @param string $block_content Rendered block content. |
| 83 | 77 | * @param array $block Block object. |
| 84 | 78 | * @return string Filtered block content. |
| 85 | - * | |
| 86 | - * @phpstan-param array{ | |
| 87 | - * attrs: array{ | |
| 88 | - * className?: string, | |
| 89 | - * ... | |
| 90 | - * }, | |
| 91 | - * ... | |
| 92 | - * } $block | |
| 93 | 79 | */ |
| 94 | 80 | function gutenberg_render_custom_css_class_name( $block_content, $block ) { |
| 95 | - $class_name_attr = $block['attrs']['className'] ?? null; | |
| 81 | + $class_string = $block['attrs']['className'] ?? ''; | |
| 82 | + preg_match( '/\bwp-custom-css-\S+\b/', $class_string, $matches ); | |
| 96 | 83 | |
| 97 | - if ( ! is_string( $class_name_attr ) || ! str_contains( $class_name_attr, 'wp-custom-css-' ) ) { | |
| 84 | + if ( empty( $matches ) ) { | |
| 98 | 85 | return $block_content; |
| 99 | 86 | } |
| 100 | 87 | |
| 101 | - // Parse out the 'wp-custom-css-*' class name added by gutenberg_render_custom_css_support_styles(). | |
| 102 | - $custom_class_name = null; | |
| 103 | - $token_delimiter = " \t\f\r\n"; | |
| 104 | - $class_token = strtok( $class_name_attr, $token_delimiter ); | |
| 105 | - while ( false !== $class_token ) { | |
| 106 | - if ( str_starts_with( $class_token, 'wp-custom-css-' ) ) { | |
| 107 | - $custom_class_name = $class_token; | |
| 108 | - break; | |
| 109 | - } | |
| 110 | - $class_token = strtok( $token_delimiter ); | |
| 111 | - } | |
| 112 | - if ( null === $custom_class_name ) { | |
| 113 | - return $block_content; | |
| 114 | - } | |
| 115 | - | |
| 116 | 88 | $tags = new WP_HTML_Tag_Processor( $block_content ); |
| 117 | 89 | |
| 118 | 90 | if ( $tags->next_tag() ) { |
| 119 | 91 | $tags->add_class( 'has-custom-css' ); |
| 120 | - $tags->add_class( $custom_class_name ); | |
| 92 | + $tags->add_class( $matches[0] ); | |
| 121 | 93 | } |
| 122 | 94 | |
| 123 | 95 | return $tags->get_updated_html(); |
| 124 | 96 | } |
| @@ -162,144 +134,8 @@ | ||
| 162 | 134 | 'type' => 'object', |
| 163 | 135 | ); |
| 164 | 136 | } |
| 165 | 137 | } |
| 166 | - | |
| 167 | -/** | |
| 168 | - * Strips `style.css` attributes from all blocks in post content. | |
| 169 | - * | |
| 170 | - * Uses WP_Block_Parser::next_token() to scan block tokens and surgically | |
| 171 | - * replace only the attribute JSON that changed — no parse_blocks() + | |
| 172 | - * serialize_blocks() round-trip needed. | |
| 173 | - * | |
| 174 | - * @param string $content Post content to filter, expected to be escaped with slashes. | |
| 175 | - * @return string Filtered post content with block custom CSS removed. | |
| 176 | - */ | |
| 177 | -function gutenberg_strip_custom_css_from_blocks( $content ) { | |
| 178 | - if ( ! has_blocks( $content ) ) { | |
| 179 | - return $content; | |
| 180 | - } | |
| 181 | - | |
| 182 | - $unslashed = stripslashes( $content ); | |
| 183 | - | |
| 184 | - $parser = new WP_Block_Parser(); | |
| 185 | - $parser->document = $unslashed; | |
| 186 | - $parser->offset = 0; | |
| 187 | - $end = strlen( $unslashed ); | |
| 188 | - $replacements = array(); | |
| 189 | - | |
| 190 | - while ( $parser->offset < $end ) { | |
| 191 | - $next_token = $parser->next_token(); | |
| 192 | - list( $token_type, , $attrs, $start_offset, $token_length ) = $next_token; | |
| 193 | - | |
| 194 | - if ( 'no-more-tokens' === $token_type ) { | |
| 195 | - break; | |
| 196 | - } | |
| 197 | - | |
| 198 | - $parser->offset = $start_offset + $token_length; | |
| 199 | - | |
| 200 | - if ( 'block-opener' !== $token_type && 'void-block' !== $token_type ) { | |
| 201 | - continue; | |
| 202 | - } | |
| 203 | - | |
| 204 | - if ( ! isset( $attrs['style']['css'] ) ) { | |
| 205 | - continue; | |
| 206 | - } | |
| 207 | - | |
| 208 | - // Remove css and clean up empty style. | |
| 209 | - unset( $attrs['style']['css'] ); | |
| 210 | - if ( empty( $attrs['style'] ) ) { | |
| 211 | - unset( $attrs['style'] ); | |
| 212 | - } | |
| 213 | - | |
| 214 | - // Locate the JSON portion within the token. | |
| 215 | - $token_string = substr( $unslashed, $start_offset, $token_length ); | |
| 216 | - $json_rel_start = strcspn( $token_string, '{' ); | |
| 217 | - $json_rel_end = strrpos( $token_string, '}' ); | |
| 218 | - | |
| 219 | - $json_start = $start_offset + $json_rel_start; | |
| 220 | - $json_length = $json_rel_end - $json_rel_start + 1; | |
| 221 | - | |
| 222 | - // Re-encode attributes. If attrs is now empty, remove JSON and trailing space. | |
| 223 | - if ( empty( $attrs ) ) { | |
| 224 | - // Remove the trailing space after JSON: `{"style":{"css":"x"}} ` → `` | |
| 225 | - $replacements[] = array( $json_start, $json_length + 1, '' ); | |
| 226 | - } else { | |
| 227 | - $replacements[] = array( $json_start, $json_length, serialize_block_attributes( $attrs ) ); | |
| 228 | - } | |
| 229 | - } | |
| 230 | - | |
| 231 | - if ( empty( $replacements ) ) { | |
| 232 | - return $content; | |
| 233 | - } | |
| 234 | - | |
| 235 | - // Build the result by splicing replacements into the original string. | |
| 236 | - $result = ''; | |
| 237 | - $was_at = 0; | |
| 238 | - | |
| 239 | - foreach ( $replacements as $replacement ) { | |
| 240 | - list( $offset, $length, $new_json ) = $replacement; | |
| 241 | - $result .= substr( $unslashed, $was_at, $offset - $was_at ) . $new_json; | |
| 242 | - $was_at = $offset + $length; | |
| 243 | - } | |
| 244 | - | |
| 245 | - if ( $was_at < $end ) { | |
| 246 | - $result .= substr( $unslashed, $was_at ); | |
| 247 | - } | |
| 248 | - | |
| 249 | - return addslashes( $result ); | |
| 250 | -} | |
| 251 | - | |
| 252 | -/** | |
| 253 | - * Adds the filters to strip custom CSS from block content on save. | |
| 254 | - * @access private | |
| 255 | - */ | |
| 256 | -function gutenberg_custom_css_kses_init_filters() { | |
| 257 | - add_filter( 'content_save_pre', 'gutenberg_strip_custom_css_from_blocks', 8 ); | |
| 258 | - add_filter( 'content_filtered_save_pre', 'gutenberg_strip_custom_css_from_blocks', 8 ); | |
| 259 | -} | |
| 260 | - | |
| 261 | -/** | |
| 262 | - * Removes the filters that strip custom CSS from block content on save. | |
| 263 | - * @access private | |
| 264 | - */ | |
| 265 | -function gutenberg_custom_css_remove_filters() { | |
| 266 | - remove_filter( 'content_save_pre', 'gutenberg_strip_custom_css_from_blocks', 8 ); | |
| 267 | - remove_filter( 'content_filtered_save_pre', 'gutenberg_strip_custom_css_from_blocks', 8 ); | |
| 268 | -} | |
| 269 | - | |
| 270 | -/** | |
| 271 | - * Registers the custom CSS content filters if the user does not have the edit_css capability. | |
| 272 | - * @access private | |
| 273 | - */ | |
| 274 | -function gutenberg_custom_css_kses_init() { | |
| 275 | - gutenberg_custom_css_remove_filters(); | |
| 276 | - if ( ! current_user_can( 'edit_css' ) ) { | |
| 277 | - gutenberg_custom_css_kses_init_filters(); | |
| 278 | - } | |
| 279 | -} | |
| 280 | - | |
| 281 | -/** | |
| 282 | - * Initializes custom CSS content filters when imported data should be filtered. | |
| 283 | - * | |
| 284 | - * This filter is the last being executed on force_filtered_html_on_import. | |
| 285 | - * If the input of the filter is true it means we are in an import situation and should | |
| 286 | - * enable the custom CSS filters, independently of the user capabilities. | |
| 287 | - * @access private | |
| 288 | - * | |
| 289 | - * @param mixed $arg Input argument of the filter. | |
| 290 | - * @return mixed Input argument of the filter. | |
| 291 | - */ | |
| 292 | -function gutenberg_custom_css_force_filtered_html_on_import_filter( $arg ) { | |
| 293 | - if ( $arg ) { | |
| 294 | - gutenberg_custom_css_kses_init_filters(); | |
| 295 | - } | |
| 296 | - return $arg; | |
| 297 | -} | |
| 298 | - | |
| 299 | -add_action( 'init', 'gutenberg_custom_css_kses_init', 20 ); | |
| 300 | -add_action( 'set_current_user', 'gutenberg_custom_css_kses_init' ); | |
| 301 | -add_filter( 'force_filtered_html_on_import', 'gutenberg_custom_css_force_filtered_html_on_import_filter', 999 ); | |
| 302 | 138 | |
| 303 | 139 | // Register the block support. |
| 304 | 140 | WP_Block_Supports::get_instance()->register( |
| 305 | 141 | 'custom-css', |
