<?php
/**
* Block Editor API.
*
* @package WordPress
* @subpackage Editor
* @since 5.8.0
*/
/**
* Returns the list of default categories for block types.
*
* @since 5.8.0
*
* @return array[] Array of categories for block types.
*/
function get_default_block_categories() {
return array(
array(
'slug' => 'text',
'title' => _x( 'Text', 'block category' ),
'icon' => null,
),
array(
'slug' => 'media',
'title' => _x( 'Media', 'block category' ),
'icon' => null,
),
array(
'slug' => 'design',
'title' => _x( 'Design', 'block category' ),
'icon' => null,
),
array(
'slug' => 'widgets',
'title' => _x( 'Widgets', 'block category' ),
'icon' => null,
),
array(
'slug' => 'theme',
'title' => _x( 'Theme', 'block category' ),
'icon' => null,
),
array(
'slug' => 'embed',
'title' => _x( 'Embeds', 'block category' ),
'icon' => null,
),
array(
'slug' => 'reusable',
'title' => _x( 'Reusable Blocks', 'block category' ),
'icon' => null,
),
);
}
/**
* Returns all the categories for block types that will be shown in the block editor.
*
* @since 5.0.0
* @since 5.8.0 It is possible to pass the block editor context as param.
*
* @param WP_Post|WP_Block_Editor_Context $post_or_block_editor_context The current post object or
* the block editor context.
*
* @return array[] Array of categories for block types.
*/
function get_block_categories( $post_or_block_editor_context ) {
$block_categories = get_default_block_categories();
$block_editor_context = $post_or_block_editor_context instanceof WP_Post ?
new WP_Block_Editor_Context(
array(
'post' => $post_or_block_editor_context,
)
) : $post_or_block_editor_context;
/**
* Filters the default array of categories for block types.
*
* @since 5.8.0
*
* @param array[] $block_categories Array of categories for block types.
* @param WP_Block_Editor_Context $block_editor_context The current block editor context.
*/
$block_categories = apply_filters( 'block_categories_all', $block_categories, $block_editor_context );
if ( ! empty( $block_editor_context->post ) ) {
$post = $block_editor_context->post;
/**
* Filters the default array of categories for block types.
*
* @since 5.0.0
* @deprecated 5.8.0 Use the {@see 'block_categories_all'} filter instead.
*
* @param array[] $block_categories Array of categories for block types.
* @param WP_Post $post Post being loaded.
*/
$block_categories = apply_filters_deprecated( 'block_categories', array( $block_categories, $post ), '5.8.0', 'block_categories_all' );
}
return $block_categories;
}
/**
* Gets the list of allowed block types to use in the block editor.
*
* @since 5.8.0
*
* @param WP_Block_Editor_Context $block_editor_context The current block editor context.
*
* @return bool|string[] Array of block type slugs, or boolean to enable/disable all.
*/
function get_allowed_block_types( $block_editor_context ) {
$allowed_block_types = true;
/**
* Filters the allowed block types for all editor types.
*
* @since 5.8.0
*
* @param bool|string[] $allowed_block_types Array of block type slugs, or boolean to enable/disable all.
* Default true (all registered block types supported).
* @param WP_Block_Editor_Context $block_editor_context The current block editor context.
*/
$allowed_block_types = apply_filters( 'allowed_block_types_all', $allowed_block_types, $block_editor_context );
if ( ! empty( $block_editor_context->post ) ) {
$post = $block_editor_context->post;
/**
* Filters the allowed block types for the editor.
*
* @since 5.0.0
* @deprecated 5.8.0 Use the {@see 'allowed_block_types_all'} filter instead.
*
* @param bool|string[] $allowed_block_types Array of block type slugs, or boolean to enable/disable all.
* Default true (all registered block types supported)
* @param WP_Post $post The post resource data.
*/
$allowed_block_types = apply_filters_deprecated( 'allowed_block_types', array( $allowed_block_types, $post ), '5.8.0', 'allowed_block_types_all' );
}
return $allowed_block_types;
}
/**
* Returns the default block editor settings.
*
* @since 5.8.0
*
* @return array The default block editor settings.
*/
function get_default_block_editor_settings() {
// Media settings.
$max_upload_size = wp_max_upload_size();
if ( ! $max_upload_size ) {
$max_upload_size = 0;
}
/** This filter is documented in wp-admin/includes/media.php */
$image_size_names = apply_filters(
'image_size_names_choose',
array(
'thumbnail' => __( 'Thumbnail' ),
'medium' => __( 'Medium' ),
'large' => __( 'Large' ),
'full' => __( 'Full Size' ),
)
);
$available_image_sizes = array();
foreach ( $image_size_names as $image_size_slug => $image_size_name ) {
$available_image_sizes[] = array(
'slug' => $image_size_slug,
'name' => $image_size_name,
);
}
$default_size = get_option( 'image_default_size', 'large' );
$image_default_size = in_array( $default_size, array_keys( $image_size_names ), true ) ? $default_size : 'large';
$image_dimensions = array();
$all_sizes = wp_get_registered_image_subsizes();
foreach ( $available_image_sizes as $size ) {
$key = $size['slug'];
if ( isset( $all_sizes[ $key ] ) ) {
$image_dimensions[ $key ] = $all_sizes[ $key ];
}
}
// These styles are used if the "no theme styles" options is triggered or on
// themes without their own editor styles.
$default_editor_styles_file = ABSPATH . WPINC . '/css/dist/block-editor/default-editor-styles.css';
if ( file_exists( $default_editor_styles_file ) ) {
$default_editor_styles = array(
array( 'css' => file_get_contents( $default_editor_styles_file ) ),
);
} else {
$default_editor_styles = array();
}
$editor_settings = array(
'alignWide' => get_theme_support( 'align-wide' ),
'allowedBlockTypes' => true,
'allowedMimeTypes' => get_allowed_mime_types(),
'defaultEditorStyles' => $default_editor_styles,
'blockCategories' => get_default_block_categories(),
'disableCustomColors' => get_theme_support( 'disable-custom-colors' ),
'disableCustomFontSizes' => get_theme_support( 'disable-custom-font-sizes' ),
'disableCustomGradients' => get_theme_support( 'disable-custom-gradients' ),
'enableCustomLineHeight' => get_theme_support( 'custom-line-height' ),
'enableCustomSpacing' => get_theme_support( 'custom-spacing' ),
'enableCustomUnits' => get_theme_support( 'custom-units' ),
'isRTL' => is_rtl(),
'imageDefaultSize' => $image_default_size,
'imageDimensions' => $image_dimensions,
'imageEditing' => true,
'imageSizes' => $available_image_sizes,
'maxUploadFileSize' => $max_upload_size,
// The following flag is required to enable the new Gallery block format on the mobile apps in 5.9.
'__unstableGalleryWithImageBlocks' => true,
);
// Theme settings.
$color_palette = current( (array) get_theme_support( 'editor-color-palette' ) );
if ( false !== $color_palette ) {
$editor_settings['colors'] = $color_palette;
}
$font_sizes = current( (array) get_theme_support( 'editor-font-sizes' ) );
if ( false !== $font_sizes ) {
$editor_settings['fontSizes'] = $font_sizes;
}
$gradient_presets = current( (array) get_theme_support( 'editor-gradient-presets' ) );
if ( false !== $gradient_presets ) {
$editor_settings['gradients'] = $gradient_presets;
}
return $editor_settings;
}
/**
* Returns the block editor settings needed to use the Legacy Widget block which
* is not registered by default.
*
* @since 5.8.0
*
* @return array Settings to be used with get_block_editor_settings().
*/
function get_legacy_widget_block_editor_settings() {
$editor_settings = array();
/**
* Filters the list of widget-type IDs that should **not** be offered by the
* Legacy Widget block.
*
* Returning an empty array will make all widgets available.
*
* @since 5.8.0
*
* @param string[] $widgets An array of excluded widget-type IDs.
*/
$editor_settings['widgetTypesToHideFromLegacyWidgetBlock'] = apply_filters(
'widget_types_to_hide_from_legacy_widget_block',
array(
'pages',
'calendar',
'archives',
'media_audio',
'media_image',
'media_gallery',
'media_video',
'search',
'text',
'categories',
'recent-posts',
'recent-comments',
'rss',
'tag_cloud',
'custom_html',
'block',
)
);
return $editor_settings;
}
/**
* Collect the block editor assets that need to be loaded into the editor's iframe.
*
* @since 6.0.0
* @access private
*
* @global string $pagenow The filename of the current screen.
*
* @return array {
* The block editor assets.
*
* @type string|false $styles String containing the HTML for styles.
* @type string|false $scripts String containing the HTML for scripts.
* }
*/
function _wp_get_iframed_editor_assets() {
global $pagenow;
$script_handles = array();
$style_handles = array(
'wp-block-editor',
'wp-block-library',
'wp-edit-blocks',
);
if ( current_theme_supports( 'wp-block-styles' ) ) {
$style_handles[] = 'wp-block-library-theme';
}
if ( 'widgets.php' === $pagenow || 'customize.php' === $pagenow ) {
$style_handles[] = 'wp-widgets';
$style_handles[] = 'wp-edit-widgets';
}
$block_registry = WP_Block_Type_Registry::get_instance();
foreach ( $block_registry->get_all_registered() as $block_type ) {
if ( ! empty( $block_type->style ) ) {
$style_handles[] = $block_type->style;
}
if ( ! empty( $block_type->editor_style ) ) {
$style_handles[] = $block_type->editor_style;
}
if ( ! empty( $block_type->script ) ) {
$script_handles[] = $block_type->script;
}
}
$style_handles = array_unique( $style_handles );
$done = wp_styles()->done;
ob_start();
// We do not need reset styles for the iframed editor.
wp_styles()->done = array( 'wp-reset-editor-styles' );
wp_styles()->do_items( $style_handles );
wp_styles()->done = $done;
$styles = ob_get_clean();
$script_handles = array_unique( $script_handles );
$done = wp_scripts()->done;
ob_start();
wp_scripts()->done = array();
wp_scripts()->do_items( $script_handles );
wp_scripts()->done = $done;
$scripts = ob_get_clean();
return array(
'styles' => $styles,
'scripts' => $scripts,
);
}
/**
* Returns the contextualized block editor settings for a selected editor context.
*
* @since 5.8.0
*
* @param array $custom_settings Custom settings to use with the given editor type.
* @param WP_Block_Editor_Context $block_editor_context The current block editor context.
*
* @return array The contextualized block editor settings.
*/
function get_block_editor_settings( array $custom_settings, $block_editor_context ) {
$editor_settings = array_merge(
get_default_block_editor_settings(),
array(
'allowedBlockTypes' => get_allowed_block_types( $block_editor_context ),
'blockCategories' => get_block_categories( $block_editor_context ),
),
$custom_settings
);
$global_styles = array();
$presets = array(
array(
'css' => 'variables',
'__unstableType' => 'presets',
'isGlobalStyles' => true,
),
array(
'css' => 'presets',
'__unstableType' => 'presets',
'isGlobalStyles' => true,
),
);
foreach ( $presets as $preset_style ) {
$actual_css = wp_get_global_stylesheet( array( $preset_style['css'] ) );
if ( '' !== $actual_css ) {
$preset_style['css'] = $actual_css;
$global_styles[] = $preset_style;
}
}
if ( WP_Theme_JSON_Resolver::theme_has_support() ) {
$block_classes = array(
'css' => 'styles',
'__unstableType' => 'theme',
'isGlobalStyles' => true,
);
$actual_css = wp_get_global_stylesheet( array( $block_classes['css'] ) );
if ( '' !== $actual_css ) {
$block_classes['css'] = $actual_css;
$global_styles[] = $block_classes;
}
}
$editor_settings['styles'] = array_merge( $global_styles, get_block_editor_theme_styles() );
$editor_settings['__experimentalFeatures'] = wp_get_global_settings();
// These settings may need to be updated based on data coming from theme.json sources.
if ( isset( $editor_settings['__experimentalFeatures']['color']['palette'] ) ) {
$colors_by_origin = $editor_settings['__experimentalFeatures']['color']['palette'];
$editor_settings['colors'] = isset( $colors_by_origin['custom'] ) ?
$colors_by_origin['custom'] : (
isset( $colors_by_origin['theme'] ) ?
$colors_by_origin['theme'] :
$colors_by_origin['default']
);
}
if ( isset( $editor_settings['__experimentalFeatures']['color']['gradients'] ) ) {
$gradients_by_origin = $editor_settings['__experimentalFeatures']['color']['gradients'];
$editor_settings['gradients'] = isset( $gradients_by_origin['custom'] ) ?
$gradients_by_origin['custom'] : (
isset( $gradients_by_origin['theme'] ) ?
$gradients_by_origin['theme'] :
$gradients_by_origin['default']
);
}
if ( isset( $editor_settings['__experimentalFeatures']['typography']['fontSizes'] ) ) {
$font_sizes_by_origin = $editor_settings['__experimentalFeatures']['typography']['fontSizes'];
$editor_settings['fontSizes'] = isset( $font_sizes_by_origin['custom'] ) ?
$font_sizes_by_origin['custom'] : (
isset( $font_sizes_by_origin['theme'] ) ?
$font_sizes_by_origin['theme'] :
$font_sizes_by_origin['default']
);
}
if ( isset( $editor_settings['__experimentalFeatures']['color']['custom'] ) ) {
$editor_settings['disableCustomColors'] = ! $editor_settings['__experimentalFeatures']['color']['custom'];
unset( $editor_settings['__experimentalFeatures']['color']['custom'] );
}
if ( isset( $editor_settings['__experimentalFeatures']['color']['customGradient'] ) ) {
$editor_settings['disableCustomGradients'] = ! $editor_settings['__experimentalFeatures']['color']['customGradient'];
unset( $editor_settings['__experimentalFeatures']['color']['customGradient'] );
}
if ( isset( $editor_settings['__experimentalFeatures']['typography']['customFontSize'] ) ) {
$editor_settings['disableCustomFontSizes'] = ! $editor_settings['__experimentalFeatures']['typography']['customFontSize'];
unset( $editor_settings['__experimentalFeatures']['typography']['customFontSize'] );
}
if ( isset( $editor_settings['__experimentalFeatures']['typography']['lineHeight'] ) ) {
$editor_settings['enableCustomLineHeight'] = $editor_settings['__experimentalFeatures']['typography']['lineHeight'];
unset( $editor_settings['__experimentalFeatures']['typography']['lineHeight'] );
}
if ( isset( $editor_settings['__experimentalFeatures']['spacing']['units'] ) ) {
$editor_settings['enableCustomUnits'] = $editor_settings['__experimentalFeatures']['spacing']['units'];
unset( $editor_settings['__experimentalFeatures']['spacing']['units'] );
}
if ( isset( $editor_settings['__experimentalFeatures']['spacing']['padding'] ) ) {
$editor_settings['enableCustomSpacing'] = $editor_settings['__experimentalFeatures']['spacing']['padding'];
unset( $editor_settings['__experimentalFeatures']['spacing']['padding'] );
}
$editor_settings['__unstableResolvedAssets'] = _wp_get_iframed_editor_assets();
$editor_settings['localAutosaveInterval'] = 15;
$editor_settings['__experimentalDiscussionSettings'] = array(
'commentOrder' => get_option( 'comment_order' ),
'commentsPerPage' => get_option( 'comments_per_page' ),
'defaultCommentsPage' => get_option( 'default_comments_page' ),
'pageComments' => get_option( 'page_comments' ),
'threadComments' => get_option( 'thread_comments' ),
'threadCommentsDepth' => get_option( 'thread_comments_depth' ),
'defaultCommentStatus' => get_option( 'default_comment_status' ),
'avatarURL' => get_avatar_url(
'',
array(
'size' => 96,
'force_default' => true,
'default' => get_option( 'avatar_default' ),
)
),
);
/**
* Filters the settings to pass to the block editor for all editor type.
*
* @since 5.8.0
*
* @param array $editor_settings Default editor settings.
* @param WP_Block_Editor_Context $block_editor_context The current block editor context.
*/
$editor_settings = apply_filters( 'block_editor_settings_all', $editor_settings, $block_editor_context );
if ( ! empty( $block_editor_context->post ) ) {
$post = $block_editor_context->post;
/**
* Filters the settings to pass to the block editor.
*
* @since 5.0.0
* @deprecated 5.8.0 Use the {@see 'block_editor_settings_all'} filter instead.
*
* @param array $editor_settings Default editor settings.
* @param WP_Post $post Post being edited.
*/
$editor_settings = apply_filters_deprecated( 'block_editor_settings', array( $editor_settings, $post ), '5.8.0', 'block_editor_settings_all' );
}
return $editor_settings;
}
/**
* Preloads common data used with the block editor by specifying an array of
* REST API paths that will be preloaded for a given block editor context.
*
* @since 5.8.0
*
* @global WP_Post $post Global post object.
* @global WP_Scripts $wp_scripts The WP_Scripts object for printing scripts.
* @global WP_Styles $wp_styles The WP_Styles object for printing styles.
*
* @param string[] $preload_paths List of paths to preload.
* @param WP_Block_Editor_Context $block_editor_context The current block editor context.
*/
function block_editor_rest_api_preload( array $preload_paths, $block_editor_context ) {
global $post, $wp_scripts, $wp_styles;
/**
* Filters the array of REST API paths that will be used to preloaded common data for the block editor.
*
* @since 5.8.0
*
* @param string[] $preload_paths Array of paths to preload.
* @param WP_Block_Editor_Context $block_editor_context The current block editor context.
*/
$preload_paths = apply_filters( 'block_editor_rest_api_preload_paths', $preload_paths, $block_editor_context );
if ( ! empty( $block_editor_context->post ) ) {
$selected_post = $block_editor_context->post;
/**
* Filters the array of paths that will be preloaded.
*
* Preload common data by specifying an array of REST API paths that will be preloaded.
*
* @since 5.0.0
* @deprecated 5.8.0 Use the {@see 'block_editor_rest_api_preload_paths'} filter instead.
*
* @param string[] $preload_paths Array of paths to preload.
* @param WP_Post $selected_post Post being edited.
*/
$preload_paths = apply_filters_deprecated( 'block_editor_preload_paths', array( $preload_paths, $selected_post ), '5.8.0', 'block_editor_rest_api_preload_paths' );
}
if ( empty( $preload_paths ) ) {
return;
}
/*
* Ensure the global $post, $wp_scripts, and $wp_styles remain the same after
* API data is preloaded.
* Because API preloading can call the_content and other filters, plugins
* can unexpectedly modify the global $post or enqueue assets which are not
* intended for the block editor.
*/
$backup_global_post = ! empty( $post ) ? clone $post : $post;
$backup_wp_scripts = ! empty( $wp_scripts ) ? clone $wp_scripts : $wp_scripts;
$backup_wp_styles = ! empty( $wp_styles ) ? clone $wp_styles : $wp_styles;
foreach ( $preload_paths as &$path ) {
if ( is_string( $path ) && ! str_starts_with( $path, '/' ) ) {
$path = '/' . $path;
continue;
}
if ( is_array( $path ) && is_string( $path[0] ) && ! str_starts_with( $path[0], '/' ) ) {
$path[0] = '/' . $path[0];
}
}
unset( $path );
$preload_data = array_reduce(
$preload_paths,
'rest_preload_api_request',
array()
);
// Restore the global $post, $wp_scripts, and $wp_styles as they were before API preloading.
$post = $backup_global_post;
$wp_scripts = $backup_wp_scripts;
$wp_styles = $backup_wp_styles;
wp_add_inline_script(
'wp-api-fetch',
sprintf(
'wp.apiFetch.use( wp.apiFetch.createPreloadingMiddleware( %s ) );',
wp_json_encode( $preload_data )
),
'after'
);
}
/**
* Creates an array of theme styles to load into the block editor.
*
* @since 5.8.0
*
* @global array $editor_styles
*
* @return array An array of theme styles for the block editor.
*/
function get_block_editor_theme_styles() {
global $editor_styles;
$styles = array();
if ( $editor_styles && current_theme_supports( 'editor-styles' ) ) {
foreach ( $editor_styles as $style ) {
if ( preg_match( '~^(https?:)?//~', $style ) ) {
$response = wp_remote_get( $style );
if ( ! is_wp_error( $response ) ) {
$styles[] = array(
'css' => wp_remote_retrieve_body( $response ),
'__unstableType' => 'theme',
'isGlobalStyles' => false,
);
}
} else {
$file = get_theme_file_path( $style );
if ( is_file( $file ) ) {
$styles[] = array(
'css' => file_get_contents( $file ),
'baseURL' => get_theme_file_uri( $style ),
'__unstableType' => 'theme',
'isGlobalStyles' => false,
);
}
}
}
}
return $styles;
}