| 1 |
<?php |
| 2 |
/** |
| 3 |
* Bootstraps Global Styles. |
| 4 |
* |
| 5 |
* @package gutenberg |
| 6 |
*/ |
| 7 |
|
| 8 |
/** |
| 9 |
* Takes a tree adhering to the theme.json schema and generates |
| 10 |
* the corresponding stylesheet. |
| 11 |
* |
| 12 |
* @param WP_Theme_JSON_Gutenberg $tree Input tree. |
| 13 |
* @param string $type Type of stylesheet. It accepts 'all', 'block_styles', 'css_variables', 'presets'. |
| 14 |
* |
| 15 |
* @return string Stylesheet. |
| 16 |
*/ |
| 17 |
function gutenberg_experimental_global_styles_get_stylesheet( $tree, $type = null ) { |
| 18 |
// Check if we can use cached. |
| 19 |
$can_use_cached = ( |
| 20 |
( 'all' === $type ) && |
| 21 |
( ! defined( 'WP_DEBUG' ) || ! WP_DEBUG ) && |
| 22 |
( ! defined( 'SCRIPT_DEBUG' ) || ! SCRIPT_DEBUG ) && |
| 23 |
( ! defined( 'REST_REQUEST' ) || ! REST_REQUEST ) && |
| 24 |
! is_admin() |
| 25 |
); |
| 26 |
|
| 27 |
$transient_name = 'gutenberg_global_styles_' . get_stylesheet(); |
| 28 |
if ( $can_use_cached ) { |
| 29 |
// Check if we have the styles already cached. |
| 30 |
// It's cached by theme to make sure that theme switching |
| 31 |
// is inmediately reflected. |
| 32 |
$cached = get_transient( $transient_name ); |
| 33 |
if ( $cached ) { |
| 34 |
return $cached; |
| 35 |
} |
| 36 |
} |
| 37 |
|
| 38 |
$supports_theme_json = WP_Theme_JSON_Resolver_Gutenberg::theme_has_support(); |
| 39 |
$supports_link_color = get_theme_support( 'experimental-link-color' ); |
| 40 |
|
| 41 |
// Only modify the $type if the consumer hasn't provided any. |
| 42 |
if ( null === $type && ! $supports_theme_json ) { |
| 43 |
$type = 'presets'; |
| 44 |
} elseif ( null === $type ) { |
| 45 |
$type = 'all'; |
| 46 |
} |
| 47 |
|
| 48 |
$origins = array( 'core', 'theme', 'user' ); |
| 49 |
if ( ! $supports_theme_json && ! $supports_link_color ) { |
| 50 |
// In this case we only enqueue the core presets (CSS Custom Properties + the classes). |
| 51 |
$origins = array( 'core' ); |
| 52 |
} elseif ( ! $supports_theme_json && $supports_link_color ) { |
| 53 |
// For the legacy link color feauter to work, the CSS Custom Properties |
| 54 |
// should be in scope (either the core or the theme ones). |
| 55 |
$origins = array( 'core', 'theme' ); |
| 56 |
} |
| 57 |
|
| 58 |
$stylesheet = $tree->get_stylesheet( $type, $origins ); |
| 59 |
|
| 60 |
if ( $can_use_cached ) { |
| 61 |
// Cache for a minute. |
| 62 |
// This cache doesn't need to be any longer, we only want to avoid spikes on high-traffic sites. |
| 63 |
set_transient( $transient_name, $stylesheet, MINUTE_IN_SECONDS ); |
| 64 |
} |
| 65 |
|
| 66 |
return $stylesheet; |
| 67 |
} |
| 68 |
|
| 69 |
/** |
| 70 |
* Fetches the preferences for each origin (core, theme, user) |
| 71 |
* and enqueues the resulting stylesheet. |
| 72 |
*/ |
| 73 |
function gutenberg_experimental_global_styles_enqueue_assets() { |
| 74 |
$settings = gutenberg_get_default_block_editor_settings(); |
| 75 |
$all = WP_Theme_JSON_Resolver_Gutenberg::get_merged_data( $settings ); |
| 76 |
|
| 77 |
$stylesheet = gutenberg_experimental_global_styles_get_stylesheet( $all ); |
| 78 |
if ( empty( $stylesheet ) ) { |
| 79 |
return; |
| 80 |
} |
| 81 |
|
| 82 |
if ( isset( wp_styles()->registered['global-styles'] ) ) { |
| 83 |
wp_styles()->registered['global-styles']->extra['after'][0] = $stylesheet; |
| 84 |
} else { |
| 85 |
wp_register_style( 'global-styles', false, array(), true, true ); |
| 86 |
wp_add_inline_style( 'global-styles', $stylesheet ); |
| 87 |
wp_enqueue_style( 'global-styles' ); |
| 88 |
} |
| 89 |
} |
| 90 |
|
| 91 |
/** |
| 92 |
* Adds the necessary settings for the Global Styles client UI. |
| 93 |
* |
| 94 |
* @param array $settings Existing block editor settings. |
| 95 |
* |
| 96 |
* @return array New block editor settings. |
| 97 |
*/ |
| 98 |
function gutenberg_experimental_global_styles_settings( $settings ) { |
| 99 |
// Set what is the context for this data request. |
| 100 |
$context = 'other'; |
| 101 |
if ( |
| 102 |
is_callable( 'get_current_screen' ) && |
| 103 |
function_exists( 'gutenberg_is_edit_site_page' ) && |
| 104 |
gutenberg_is_edit_site_page( get_current_screen()->id ) |
| 105 |
) { |
| 106 |
$context = 'site-editor'; |
| 107 |
} |
| 108 |
|
| 109 |
if ( |
| 110 |
defined( 'REST_REQUEST' ) && |
| 111 |
REST_REQUEST && |
| 112 |
isset( $_GET['context'] ) && |
| 113 |
'mobile' === $_GET['context'] |
| 114 |
) { |
| 115 |
$context = 'mobile'; |
| 116 |
} |
| 117 |
|
| 118 |
$consolidated = WP_Theme_JSON_Resolver_Gutenberg::get_merged_data( $settings ); |
| 119 |
|
| 120 |
if ( 'mobile' === $context && WP_Theme_JSON_Resolver_Gutenberg::theme_has_support() ) { |
| 121 |
$settings['__experimentalStyles'] = $consolidated->get_raw_data()['styles']; |
| 122 |
} |
| 123 |
|
| 124 |
if ( 'site-editor' === $context && gutenberg_experimental_is_site_editor_available() ) { |
| 125 |
$theme = WP_Theme_JSON_Resolver_Gutenberg::get_merged_data( $settings, 'theme' ); |
| 126 |
$user_cpt_id = WP_Theme_JSON_Resolver_Gutenberg::get_user_custom_post_type_id(); |
| 127 |
|
| 128 |
$settings['__experimentalGlobalStylesUserEntityId'] = $user_cpt_id; |
| 129 |
$settings['__experimentalGlobalStylesBaseStyles'] = $theme->get_raw_data(); |
| 130 |
} |
| 131 |
|
| 132 |
if ( 'other' === $context ) { |
| 133 |
$block_styles = array( 'css' => gutenberg_experimental_global_styles_get_stylesheet( $consolidated, 'block_styles' ) ); |
| 134 |
$css_variables = array( |
| 135 |
'css' => gutenberg_experimental_global_styles_get_stylesheet( $consolidated, 'css_variables' ), |
| 136 |
'__experimentalNoWrapper' => true, |
| 137 |
); |
| 138 |
|
| 139 |
// Make sure the styles array exists. |
| 140 |
// In some contexts, like the navigation editor, it doesn't. |
| 141 |
if ( ! isset( $settings['styles'] ) ) { |
| 142 |
$settings['styles'] = array(); |
| 143 |
} |
| 144 |
|
| 145 |
// Reset existing global styles. |
| 146 |
$styles_without_existing_global_styles = array(); |
| 147 |
foreach ( $settings['styles'] as $style ) { |
| 148 |
if ( ! isset( $style['__unstableType'] ) || 'globalStyles' !== $style['__unstableType'] ) { |
| 149 |
$styles_without_existing_global_styles[] = $style; |
| 150 |
} |
| 151 |
} |
| 152 |
|
| 153 |
// Add the new ones. |
| 154 |
$styles_without_existing_global_styles[] = $css_variables; |
| 155 |
$styles_without_existing_global_styles[] = $block_styles; |
| 156 |
$settings['styles'] = $styles_without_existing_global_styles; |
| 157 |
} |
| 158 |
|
| 159 |
// Copied from get_block_editor_settings() at wordpress-develop/block-editor.php. |
| 160 |
$settings['__experimentalFeatures'] = $consolidated->get_settings(); |
| 161 |
|
| 162 |
if ( isset( $settings['__experimentalFeatures']['color']['palette'] ) ) { |
| 163 |
$colors_by_origin = $settings['__experimentalFeatures']['color']['palette']; |
| 164 |
$settings['colors'] = isset( $colors_by_origin['user'] ) ? |
| 165 |
$colors_by_origin['user'] : ( |
| 166 |
isset( $colors_by_origin['theme'] ) ? |
| 167 |
$colors_by_origin['theme'] : |
| 168 |
$colors_by_origin['core'] |
| 169 |
); |
| 170 |
} |
| 171 |
|
| 172 |
if ( isset( $settings['__experimentalFeatures']['color']['gradients'] ) ) { |
| 173 |
$gradients_by_origin = $settings['__experimentalFeatures']['color']['gradients']; |
| 174 |
$settings['gradients'] = isset( $gradients_by_origin['user'] ) ? |
| 175 |
$gradients_by_origin['user'] : ( |
| 176 |
isset( $gradients_by_origin['theme'] ) ? |
| 177 |
$gradients_by_origin['theme'] : |
| 178 |
$gradients_by_origin['core'] |
| 179 |
); |
| 180 |
} |
| 181 |
|
| 182 |
if ( isset( $settings['__experimentalFeatures']['typography']['fontSizes'] ) ) { |
| 183 |
$font_sizes_by_origin = $settings['__experimentalFeatures']['typography']['fontSizes']; |
| 184 |
$settings['fontSizes'] = isset( $font_sizes_by_origin['user'] ) ? |
| 185 |
$font_sizes_by_origin['user'] : ( |
| 186 |
isset( $font_sizes_by_origin['theme'] ) ? |
| 187 |
$font_sizes_by_origin['theme'] : |
| 188 |
$font_sizes_by_origin['core'] |
| 189 |
); |
| 190 |
} |
| 191 |
|
| 192 |
if ( isset( $settings['__experimentalFeatures']['color']['custom'] ) ) { |
| 193 |
$settings['disableCustomColors'] = ! $settings['__experimentalFeatures']['color']['custom']; |
| 194 |
unset( $settings['__experimentalFeatures']['color']['custom'] ); |
| 195 |
} |
| 196 |
if ( isset( $settings['__experimentalFeatures']['color']['customGradient'] ) ) { |
| 197 |
$settings['disableCustomGradients'] = ! $settings['__experimentalFeatures']['color']['customGradient']; |
| 198 |
unset( $settings['__experimentalFeatures']['color']['customGradient'] ); |
| 199 |
} |
| 200 |
if ( isset( $settings['__experimentalFeatures']['typography']['customFontSize'] ) ) { |
| 201 |
$settings['disableCustomFontSizes'] = ! $settings['__experimentalFeatures']['typography']['customFontSize']; |
| 202 |
unset( $settings['__experimentalFeatures']['typography']['customFontSize'] ); |
| 203 |
} |
| 204 |
if ( isset( $settings['__experimentalFeatures']['typography']['customLineHeight'] ) ) { |
| 205 |
$settings['enableCustomLineHeight'] = $settings['__experimentalFeatures']['typography']['customLineHeight']; |
| 206 |
unset( $settings['__experimentalFeatures']['typography']['customLineHeight'] ); |
| 207 |
} |
| 208 |
if ( isset( $settings['__experimentalFeatures']['spacing']['units'] ) ) { |
| 209 |
$settings['enableCustomUnits'] = $settings['__experimentalFeatures']['spacing']['units']; |
| 210 |
} |
| 211 |
if ( isset( $settings['__experimentalFeatures']['spacing']['customPadding'] ) ) { |
| 212 |
$settings['enableCustomSpacing'] = $settings['__experimentalFeatures']['spacing']['customPadding']; |
| 213 |
unset( $settings['__experimentalFeatures']['spacing']['customPadding'] ); |
| 214 |
} |
| 215 |
|
| 216 |
return $settings; |
| 217 |
} |
| 218 |
|
| 219 |
/** |
| 220 |
* Whether or not the Site Editor is available. |
| 221 |
* |
| 222 |
* @return boolean |
| 223 |
*/ |
| 224 |
function gutenberg_experimental_is_site_editor_available() { |
| 225 |
return gutenberg_is_fse_theme(); |
| 226 |
} |
| 227 |
|
| 228 |
/** |
| 229 |
* Register CPT to store/access user data. |
| 230 |
* |
| 231 |
* @return void |
| 232 |
*/ |
| 233 |
function gutenberg_experimental_global_styles_register_user_cpt() { |
| 234 |
if ( gutenberg_experimental_is_site_editor_available() ) { |
| 235 |
WP_Theme_JSON_Resolver_Gutenberg::register_user_custom_post_type(); |
| 236 |
} |
| 237 |
} |
| 238 |
|
| 239 |
/** |
| 240 |
* Sanitizes global styles user content removing unsafe rules. |
| 241 |
* |
| 242 |
* @param string $content Post content to filter. |
| 243 |
* @return string Filtered post content with unsafe rules removed. |
| 244 |
*/ |
| 245 |
function gutenberg_global_styles_filter_post( $content ) { |
| 246 |
$decoded_data = json_decode( wp_unslash( $content ), true ); |
| 247 |
$json_decoding_error = json_last_error(); |
| 248 |
if ( |
| 249 |
JSON_ERROR_NONE === $json_decoding_error && |
| 250 |
is_array( $decoded_data ) && |
| 251 |
isset( $decoded_data['isGlobalStylesUserThemeJSON'] ) && |
| 252 |
$decoded_data['isGlobalStylesUserThemeJSON'] |
| 253 |
) { |
| 254 |
unset( $decoded_data['isGlobalStylesUserThemeJSON'] ); |
| 255 |
|
| 256 |
$data_to_encode = WP_Theme_JSON_Gutenberg::remove_insecure_properties( $decoded_data ); |
| 257 |
|
| 258 |
$data_to_encode['isGlobalStylesUserThemeJSON'] = true; |
| 259 |
return wp_slash( wp_json_encode( $data_to_encode ) ); |
| 260 |
} |
| 261 |
return $content; |
| 262 |
} |
| 263 |
|
| 264 |
/** |
| 265 |
* Adds the filters to filter global styles user theme.json. |
| 266 |
*/ |
| 267 |
function gutenberg_global_styles_kses_init_filters() { |
| 268 |
add_filter( 'content_save_pre', 'gutenberg_global_styles_filter_post' ); |
| 269 |
} |
| 270 |
|
| 271 |
/** |
| 272 |
* Removes the filters to filter global styles user theme.json. |
| 273 |
*/ |
| 274 |
function gutenberg_global_styles_kses_remove_filters() { |
| 275 |
remove_filter( 'content_save_pre', 'gutenberg_global_styles_filter_post' ); |
| 276 |
} |
| 277 |
|
| 278 |
/** |
| 279 |
* Register global styles kses filters if the user does not have unfiltered_html capability. |
| 280 |
* |
| 281 |
* @uses render_block_core_navigation() |
| 282 |
* @throws WP_Error An WP_Error exception parsing the block definition. |
| 283 |
*/ |
| 284 |
function gutenberg_global_styles_kses_init() { |
| 285 |
gutenberg_global_styles_kses_remove_filters(); |
| 286 |
if ( ! current_user_can( 'unfiltered_html' ) ) { |
| 287 |
gutenberg_global_styles_kses_init_filters(); |
| 288 |
} |
| 289 |
} |
| 290 |
|
| 291 |
/** |
| 292 |
* This filter is the last being executed on force_filtered_html_on_import. |
| 293 |
* If the input of the filter is true it means we are in an import situation and should |
| 294 |
* enable kses, independently of the user capabilities. |
| 295 |
* So in that case we call gutenberg_global_styles_kses_init_filters; |
| 296 |
* |
| 297 |
* @param string $arg Input argument of the filter. |
| 298 |
* @return string Exactly what was passed as argument. |
| 299 |
*/ |
| 300 |
function gutenberg_global_styles_force_filtered_html_on_import_filter( $arg ) { |
| 301 |
// force_filtered_html_on_import is true we need to init the global styles kses filters. |
| 302 |
if ( $arg ) { |
| 303 |
gutenberg_global_styles_kses_init_filters(); |
| 304 |
} |
| 305 |
return $arg; |
| 306 |
} |
| 307 |
|
| 308 |
/** |
| 309 |
* This filter is the last being executed on force_filtered_html_on_import. |
| 310 |
* If the input of the filter is true it means we are in an import situation and should |
| 311 |
* enable kses, independently of the user capabilities. |
| 312 |
* So in that case we call gutenberg_global_styles_kses_init_filters; |
| 313 |
* |
| 314 |
* @param bool $allow_css Whether the CSS in the test string is considered safe. |
| 315 |
* @param bool $css_test_string The CSS string to test.. |
| 316 |
* @return bool If $allow_css is true it returns true. |
| 317 |
* If $allow_css is false and the CSS rule is referencing a WordPress css variable it returns true. |
| 318 |
* Otherwise the function return false. |
| 319 |
*/ |
| 320 |
function gutenberg_global_styles_include_support_for_wp_variables( $allow_css, $css_test_string ) { |
| 321 |
if ( $allow_css ) { |
| 322 |
return $allow_css; |
| 323 |
} |
| 324 |
$allowed_preset_attributes = array( |
| 325 |
'background', |
| 326 |
'background-color', |
| 327 |
'border-color', |
| 328 |
'color', |
| 329 |
'font-family', |
| 330 |
'font-size', |
| 331 |
); |
| 332 |
$parts = explode( ':', $css_test_string, 2 ); |
| 333 |
|
| 334 |
if ( ! in_array( trim( $parts[0] ), $allowed_preset_attributes, true ) ) { |
| 335 |
return $allow_css; |
| 336 |
} |
| 337 |
return ! ! preg_match( '/^var\(--wp-[a-zA-Z0-9\-]+\)$/', trim( $parts[1] ) ); |
| 338 |
} |
| 339 |
|
| 340 |
// The else clause can be removed when plugin support requires WordPress 5.8.0+. |
| 341 |
if ( function_exists( 'get_block_editor_settings' ) ) { |
| 342 |
add_filter( 'block_editor_settings_all', 'gutenberg_experimental_global_styles_settings', PHP_INT_MAX ); |
| 343 |
} else { |
| 344 |
add_filter( 'block_editor_settings', 'gutenberg_experimental_global_styles_settings', PHP_INT_MAX ); |
| 345 |
} |
| 346 |
|
| 347 |
add_action( 'init', 'gutenberg_experimental_global_styles_register_user_cpt' ); |
| 348 |
add_action( 'wp_enqueue_scripts', 'gutenberg_experimental_global_styles_enqueue_assets' ); |
| 349 |
|
| 350 |
// kses actions&filters. |
| 351 |
add_action( 'init', 'gutenberg_global_styles_kses_init' ); |
| 352 |
add_action( 'set_current_user', 'gutenberg_global_styles_kses_init' ); |
| 353 |
add_filter( 'force_filtered_html_on_import', 'gutenberg_global_styles_force_filtered_html_on_import_filter', 999 ); |
| 354 |
add_filter( 'safecss_filter_attr_allow_css', 'gutenberg_global_styles_include_support_for_wp_variables', 10, 2 ); |
| 355 |
// This filter needs to be executed last. |
| 356 |
|
