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<?php |
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/** |
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* Bootstraps Global Styles. |
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* |
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* @package gutenberg |
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*/ |
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|
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/** |
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* Takes a tree adhering to the theme.json schema and generates |
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* the corresponding stylesheet. |
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* |
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* @param WP_Theme_JSON_Gutenberg $tree Input tree. |
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* @param string $type Type of stylesheet we want accepts 'all', 'block_styles', and 'css_variables'. |
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* |
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* @return string Stylesheet. |
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*/ |
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function gutenberg_experimental_global_styles_get_stylesheet( $tree, $type = 'all' ) { |
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// Check if we can use cached. |
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$can_use_cached = ( |
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( 'all' === $type ) && |
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( ! defined( 'WP_DEBUG' ) || ! WP_DEBUG ) && |
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( ! defined( 'SCRIPT_DEBUG' ) || ! SCRIPT_DEBUG ) && |
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( ! defined( 'REST_REQUEST' ) || ! REST_REQUEST ) && |
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! is_admin() |
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); |
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|
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if ( $can_use_cached ) { |
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// Check if we have the styles already cached. |
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$cached = get_transient( 'global_styles' ); |
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if ( $cached ) { |
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return $cached; |
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} |
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} |
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|
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$stylesheet = $tree->get_stylesheet( $type ); |
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|
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if ( $can_use_cached ) { |
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// Cache for a minute. |
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// This cache doesn't need to be any longer, we only want to avoid spikes on high-traffic sites. |
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set_transient( 'global_styles', $stylesheet, MINUTE_IN_SECONDS ); |
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} |
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|
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return $stylesheet; |
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} |
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|
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/** |
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* Fetches the preferences for each origin (core, theme, user) |
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* and enqueues the resulting stylesheet. |
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*/ |
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function gutenberg_experimental_global_styles_enqueue_assets() { |
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if ( |
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! get_theme_support( 'experimental-link-color' ) && // link color support needs the presets CSS variables regardless of the presence of theme.json file. |
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! WP_Theme_JSON_Resolver_Gutenberg::theme_has_support() ) { |
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return; |
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} |
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|
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$settings = gutenberg_get_default_block_editor_settings(); |
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$all = WP_Theme_JSON_Resolver_Gutenberg::get_merged_data( $settings ); |
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|
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$stylesheet = gutenberg_experimental_global_styles_get_stylesheet( $all ); |
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if ( empty( $stylesheet ) ) { |
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return; |
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} |
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|
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wp_register_style( 'global-styles', false, array(), true, true ); |
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wp_add_inline_style( 'global-styles', $stylesheet ); |
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wp_enqueue_style( 'global-styles' ); |
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} |
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|
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/** |
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* Adds the necessary settings for the Global Styles client UI. |
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* |
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* @param array $settings Existing block editor settings. |
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* |
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* @return array New block editor settings. |
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*/ |
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function gutenberg_experimental_global_styles_settings( $settings ) { |
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// Set what is the context for this data request. |
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$context = 'all'; |
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if ( |
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is_callable( 'get_current_screen' ) && |
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function_exists( 'gutenberg_is_edit_site_page' ) && |
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gutenberg_is_edit_site_page( get_current_screen()->id ) && |
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WP_Theme_JSON_Resolver_Gutenberg::theme_has_support() && |
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gutenberg_supports_block_templates() |
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) { |
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$context = 'site-editor'; |
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} |
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|
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if ( |
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defined( 'REST_REQUEST' ) && |
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REST_REQUEST && |
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isset( $_GET['context'] ) && |
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'mobile' === $_GET['context'] && |
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WP_Theme_JSON_Resolver_Gutenberg::theme_has_support() |
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) { |
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$context = 'mobile'; |
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} |
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|
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$origin = 'theme'; |
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if ( |
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WP_Theme_JSON_Resolver_Gutenberg::theme_has_support() && |
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gutenberg_supports_block_templates() |
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) { |
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// Only lookup for the user data if we need it. |
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$origin = 'user'; |
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} |
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$consolidated = WP_Theme_JSON_Resolver_Gutenberg::get_merged_data( $settings, $origin ); |
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|
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if ( 'mobile' === $context ) { |
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$settings['__experimentalStyles'] = $consolidated->get_raw_data()['styles']; |
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} |
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|
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if ( 'site-editor' === $context ) { |
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$theme = WP_Theme_JSON_Resolver_Gutenberg::get_merged_data( $settings, 'theme' ); |
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$user_cpt_id = WP_Theme_JSON_Resolver_Gutenberg::get_user_custom_post_type_id(); |
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|
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$settings['__experimentalGlobalStylesUserEntityId'] = $user_cpt_id; |
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$settings['__experimentalGlobalStylesBaseStyles'] = $theme->get_raw_data(); |
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} |
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|
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if ( |
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'site-editor' !== $context && |
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'mobile' !== $context && |
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( WP_Theme_JSON_Resolver_Gutenberg::theme_has_support() || get_theme_support( 'experimental-link-color' ) ) |
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) { |
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$block_styles = array( 'css' => gutenberg_experimental_global_styles_get_stylesheet( $consolidated, 'block_styles' ) ); |
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$css_variables = array( |
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'css' => gutenberg_experimental_global_styles_get_stylesheet( $consolidated, 'css_variables' ), |
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'__experimentalNoWrapper' => true, |
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); |
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|
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$settings['styles'][] = $css_variables; |
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$settings['styles'][] = $block_styles; |
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} |
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|
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// Copied from get_block_editor_settings() at wordpress-develop/block-editor.php. |
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$settings['__experimentalFeatures'] = $consolidated->get_settings(); |
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if ( isset( $settings['__experimentalFeatures']['color']['palette'] ) ) { |
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$settings['colors'] = $settings['__experimentalFeatures']['color']['palette']; |
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unset( $settings['__experimentalFeatures']['color']['palette'] ); |
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} |
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if ( isset( $settings['__experimentalFeatures']['color']['gradients'] ) ) { |
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$settings['gradients'] = $settings['__experimentalFeatures']['color']['gradients']; |
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unset( $settings['__experimentalFeatures']['color']['gradients'] ); |
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} |
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if ( isset( $settings['__experimentalFeatures']['color']['custom'] ) ) { |
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$settings['disableCustomColors'] = ! $settings['__experimentalFeatures']['color']['custom']; |
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unset( $settings['__experimentalFeatures']['color']['custom'] ); |
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} |
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if ( isset( $settings['__experimentalFeatures']['color']['customGradient'] ) ) { |
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$settings['disableCustomGradients'] = ! $settings['__experimentalFeatures']['color']['customGradient']; |
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unset( $settings['__experimentalFeatures']['color']['customGradient'] ); |
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} |
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if ( isset( $settings['__experimentalFeatures']['typography']['fontSizes'] ) ) { |
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$settings['fontSizes'] = $settings['__experimentalFeatures']['typography']['fontSizes']; |
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unset( $settings['__experimentalFeatures']['typography']['fontSizes'] ); |
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} |
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if ( isset( $settings['__experimentalFeatures']['typography']['customFontSize'] ) ) { |
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$settings['disableCustomFontSizes'] = ! $settings['__experimentalFeatures']['typography']['customFontSize']; |
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unset( $settings['__experimentalFeatures']['typography']['customFontSize'] ); |
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} |
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if ( isset( $settings['__experimentalFeatures']['typography']['customLineHeight'] ) ) { |
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$settings['enableCustomLineHeight'] = $settings['__experimentalFeatures']['typography']['customLineHeight']; |
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unset( $settings['__experimentalFeatures']['typography']['customLineHeight'] ); |
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} |
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if ( isset( $settings['__experimentalFeatures']['spacing']['units'] ) ) { |
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if ( ! is_array( $settings['__experimentalFeatures']['spacing']['units'] ) ) { |
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$settings['enableCustomUnits'] = false; |
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} else { |
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$settings['enableCustomUnits'] = count( $settings['__experimentalFeatures']['spacing']['units'] ) > 0; |
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} |
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unset( $settings['__experimentalFeatures']['spacing']['units'] ); |
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} |
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if ( isset( $settings['__experimentalFeatures']['spacing']['customPadding'] ) ) { |
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$settings['enableCustomSpacing'] = $settings['__experimentalFeatures']['spacing']['customPadding']; |
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unset( $settings['__experimentalFeatures']['spacing']['customPadding'] ); |
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} |
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|
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return $settings; |
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} |
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|
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/** |
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* Register CPT to store/access user data. |
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* |
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* @return array|undefined |
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*/ |
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function gutenberg_experimental_global_styles_register_user_cpt() { |
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if ( ! WP_Theme_JSON_Resolver_Gutenberg::theme_has_support() ) { |
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return; |
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} |
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|
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WP_Theme_JSON_Resolver_Gutenberg::register_user_custom_post_type(); |
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} |
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|
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/** |
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* Sanitizes global styles user content removing unsafe rules. |
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* |
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* @param string $content Post content to filter. |
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* @return string Filtered post content with unsafe rules removed. |
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*/ |
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function gutenberg_global_styles_filter_post( $content ) { |
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$decoded_data = json_decode( stripslashes( $content ), true ); |
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$json_decoding_error = json_last_error(); |
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if ( |
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JSON_ERROR_NONE === $json_decoding_error && |
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is_array( $decoded_data ) && |
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isset( $decoded_data['isGlobalStylesUserThemeJSON'] ) && |
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$decoded_data['isGlobalStylesUserThemeJSON'] |
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) { |
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unset( $decoded_data['isGlobalStylesUserThemeJSON'] ); |
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$theme_json = new WP_Theme_JSON_Gutenberg( $decoded_data ); |
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$theme_json->remove_insecure_properties(); |
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$data_to_encode = $theme_json->get_raw_data(); |
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$data_to_encode['isGlobalStylesUserThemeJSON'] = true; |
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return wp_json_encode( $data_to_encode ); |
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} |
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return $content; |
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} |
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|
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/** |
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* Adds the filters to filter global styles user theme.json. |
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*/ |
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function gutenberg_global_styles_kses_init_filters() { |
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add_filter( 'content_save_pre', 'gutenberg_global_styles_filter_post' ); |
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} |
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|
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/** |
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* Removes the filters to filter global styles user theme.json. |
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*/ |
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function gutenberg_global_styles_kses_remove_filters() { |
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remove_filter( 'content_save_pre', 'gutenberg_global_styles_filter_post' ); |
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} |
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|
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/** |
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* Register global styles kses filters if the user does not have unfiltered_html capability. |
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* |
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* @uses render_block_core_navigation() |
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* @throws WP_Error An WP_Error exception parsing the block definition. |
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*/ |
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function gutenberg_global_styles_kses_init() { |
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gutenberg_global_styles_kses_remove_filters(); |
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if ( ! current_user_can( 'unfiltered_html' ) ) { |
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gutenberg_global_styles_kses_init_filters(); |
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} |
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} |
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|
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/** |
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* This filter is the last being executed on force_filtered_html_on_import. |
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* If the input of the filter is true it means we are in an import situation and should |
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* enable kses, independently of the user capabilities. |
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* So in that case we call gutenberg_global_styles_kses_init_filters; |
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* |
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* @param string $arg Input argument of the filter. |
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* @return string Exactly what was passed as argument. |
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*/ |
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function gutenberg_global_styles_force_filtered_html_on_import_filter( $arg ) { |
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// force_filtered_html_on_import is true we need to init the global styles kses filters. |
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if ( $arg ) { |
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gutenberg_global_styles_kses_init_filters(); |
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} |
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return $arg; |
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} |
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|
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/** |
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* This filter is the last being executed on force_filtered_html_on_import. |
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* If the input of the filter is true it means we are in an import situation and should |
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* enable kses, independently of the user capabilities. |
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* So in that case we call gutenberg_global_styles_kses_init_filters; |
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* |
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* @param bool $allow_css Whether the CSS in the test string is considered safe. |
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* @param bool $css_test_string The CSS string to test.. |
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* @return bool If $allow_css is true it returns true. |
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* If $allow_css is false and the CSS rule is referencing a WordPress css variable it returns true. |
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* Otherwise the function return false. |
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*/ |
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function gutenberg_global_styles_include_support_for_wp_variables( $allow_css, $css_test_string ) { |
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if ( $allow_css ) { |
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return $allow_css; |
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} |
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$allowed_preset_attributes = array( |
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'background', |
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'background-color', |
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'border-color', |
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'color', |
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'font-family', |
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'font-size', |
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); |
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$parts = explode( ':', $css_test_string, 2 ); |
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|
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if ( ! in_array( trim( $parts[0] ), $allowed_preset_attributes, true ) ) { |
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return $allow_css; |
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} |
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return ! ! preg_match( '/^var\(--wp-[a-zA-Z0-9\-]+\)$/', trim( $parts[1] ) ); |
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} |
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|
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// The else clause can be removed when plugin support requires WordPress 5.8.0+. |
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if ( function_exists( 'get_block_editor_settings' ) ) { |
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add_filter( 'block_editor_settings_all', 'gutenberg_experimental_global_styles_settings', PHP_INT_MAX ); |
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} else { |
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add_filter( 'block_editor_settings', 'gutenberg_experimental_global_styles_settings', PHP_INT_MAX ); |
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} |
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|
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add_action( 'init', 'gutenberg_experimental_global_styles_register_user_cpt' ); |
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add_action( 'wp_enqueue_scripts', 'gutenberg_experimental_global_styles_enqueue_assets' ); |
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|
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// kses actions&filters. |
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add_action( 'init', 'gutenberg_global_styles_kses_init' ); |
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add_action( 'set_current_user', 'gutenberg_global_styles_kses_init' ); |
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add_filter( 'force_filtered_html_on_import', 'gutenberg_global_styles_force_filtered_html_on_import_filter', 999 ); |
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add_filter( 'safecss_filter_attr_allow_css', 'gutenberg_global_styles_include_support_for_wp_variables', 10, 2 ); |
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// This filter needs to be executed last. |
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|
