Adding upstream version 6.4.3+dfsg1.upstream/6.4.3+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 848 insertions, 0 deletions

diff --git a/wp-includes/block-editor.php b/wp-includes/block-editor.php
new file mode 100644
index 0000000..e04b012
--- /dev/null
+++ b/wp-includes/block-editor.php
@@ -0,0 +1,848 @@
+<?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
+ * @since 6.3.0 Reusable Blocks renamed to Patterns.
+ *
+ * @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( 'Patterns', '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.
+
+	// wp_max_upload_size() can be expensive, so only call it when relevant for the current user.
+	$max_upload_size = 0;
+	if ( current_user_can( 'upload_files' ) ) {
+		$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';
+
+	static $default_editor_styles_file_contents = false;
+	if ( ! $default_editor_styles_file_contents && file_exists( $default_editor_styles_file ) ) {
+		$default_editor_styles_file_contents = file_get_contents( $default_editor_styles_file );
+	}
+
+	$default_editor_styles = array();
+	if ( $default_editor_styles_file_contents ) {
+		$default_editor_styles = array(
+			array( 'css' => $default_editor_styles_file_contents ),
+		);
+	}
+
+	$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(),
+		'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 = get_classic_theme_supports_block_editor_settings();
+	foreach ( $theme_settings as $key => $value ) {
+		$editor_settings[ $key ] = $value;
+	}
+
+	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 WP_Styles  $wp_styles  The WP_Styles current instance.
+ * @global WP_Scripts $wp_scripts The WP_Scripts current instance.
+ *
+ * @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 $wp_styles, $wp_scripts;
+
+	// Keep track of the styles and scripts instance to restore later.
+	$current_wp_styles  = $wp_styles;
+	$current_wp_scripts = $wp_scripts;
+
+	// Create new instances to collect the assets.
+	$wp_styles  = new WP_Styles();
+	$wp_scripts = new WP_Scripts();
+
+	/*
+	 * Register all currently registered styles and scripts. The actions that
+	 * follow enqueue assets, but don't necessarily register them.
+	 */
+	$wp_styles->registered  = $current_wp_styles->registered;
+	$wp_scripts->registered = $current_wp_scripts->registered;
+
+	/*
+	 * We generally do not need reset styles for the iframed editor.
+	 * However, if it's a classic theme, margins will be added to every block,
+	 * which is reset specifically for list items, so classic themes rely on
+	 * these reset styles.
+	 */
+	$wp_styles->done =
+		wp_theme_has_theme_json() ? array( 'wp-reset-editor-styles' ) : array();
+
+	wp_enqueue_script( 'wp-polyfill' );
+	// Enqueue the `editorStyle` handles for all core block, and dependencies.
+	wp_enqueue_style( 'wp-edit-blocks' );
+
+	if ( current_theme_supports( 'wp-block-styles' ) ) {
+		wp_enqueue_style( 'wp-block-library-theme' );
+	}
+
+	/*
+	 * We don't want to load EDITOR scripts in the iframe, only enqueue
+	 * front-end assets for the content.
+	 */
+	add_filter( 'should_load_block_editor_scripts_and_styles', '__return_false' );
+	do_action( 'enqueue_block_assets' );
+	remove_filter( 'should_load_block_editor_scripts_and_styles', '__return_false' );
+
+	$block_registry = WP_Block_Type_Registry::get_instance();
+
+	/*
+	 * Additionally, do enqueue `editorStyle` assets for all blocks, which
+	 * contains editor-only styling for blocks (editor content).
+	 */
+	foreach ( $block_registry->get_all_registered() as $block_type ) {
+		if ( isset( $block_type->editor_style_handles ) && is_array( $block_type->editor_style_handles ) ) {
+			foreach ( $block_type->editor_style_handles as $style_handle ) {
+				wp_enqueue_style( $style_handle );
+			}
+		}
+	}
+
+	/**
+	 * Remove the deprecated `print_emoji_styles` handler.
+	 * It avoids breaking style generation with a deprecation message.
+	 */
+	$has_emoji_styles = has_action( 'wp_print_styles', 'print_emoji_styles' );
+	if ( $has_emoji_styles ) {
+		remove_action( 'wp_print_styles', 'print_emoji_styles' );
+	}
+
+	ob_start();
+	wp_print_styles();
+	wp_print_font_faces();
+	$styles = ob_get_clean();
+
+	if ( $has_emoji_styles ) {
+		add_action( 'wp_print_styles', 'print_emoji_styles' );
+	}
+
+	ob_start();
+	wp_print_head_scripts();
+	wp_print_footer_scripts();
+	$scripts = ob_get_clean();
+
+	// Restore the original instances.
+	$wp_styles  = $current_wp_styles;
+	$wp_scripts = $current_wp_scripts;
+
+	return array(
+		'styles'  => $styles,
+		'scripts' => $scripts,
+	);
+}
+
+/**
+ * Finds the first occurrence of a specific block in an array of blocks.
+ *
+ * @since 6.3.0
+ *
+ * @param array  $blocks     Array of blocks.
+ * @param string $block_name Name of the block to find.
+ * @return array Found block, or empty array if none found.
+ */
+function wp_get_first_block( $blocks, $block_name ) {
+	foreach ( $blocks as $block ) {
+		if ( $block_name === $block['blockName'] ) {
+			return $block;
+		}
+		if ( ! empty( $block['innerBlocks'] ) ) {
+			$found_block = wp_get_first_block( $block['innerBlocks'], $block_name );
+
+			if ( ! empty( $found_block ) ) {
+				return $found_block;
+			}
+		}
+	}
+
+	return array();
+}
+
+/**
+ * Retrieves Post Content block attributes from the current post template.
+ *
+ * @since 6.3.0
+ * @since 6.4.0 Return null if there is no post content block.
+ * @access private
+ *
+ * @global int $post_ID
+ *
+ * @return array|null Post Content block attributes array or null if Post Content block doesn't exist.
+ */
+function wp_get_post_content_block_attributes() {
+	global $post_ID;
+
+	$is_block_theme = wp_is_block_theme();
+
+	if ( ! $is_block_theme || ! $post_ID ) {
+		return null;
+	}
+
+	$template_slug = get_page_template_slug( $post_ID );
+
+	if ( ! $template_slug ) {
+		$post_slug      = 'singular';
+		$page_slug      = 'singular';
+		$template_types = get_block_templates();
+
+		foreach ( $template_types as $template_type ) {
+			if ( 'page' === $template_type->slug ) {
+				$page_slug = 'page';
+			}
+			if ( 'single' === $template_type->slug ) {
+				$post_slug = 'single';
+			}
+		}
+
+		$what_post_type = get_post_type( $post_ID );
+		switch ( $what_post_type ) {
+			case 'page':
+				$template_slug = $page_slug;
+				break;
+			default:
+				$template_slug = $post_slug;
+				break;
+		}
+	}
+
+	$current_template = get_block_templates( array( 'slug__in' => array( $template_slug ) ) );
+
+	if ( ! empty( $current_template ) ) {
+		$template_blocks    = parse_blocks( $current_template[0]->content );
+		$post_content_block = wp_get_first_block( $template_blocks, 'core/post-content' );
+
+		if ( isset( $post_content_block['attrs'] ) ) {
+			return $post_content_block['attrs'];
+		}
+	}
+
+	return null;
+}
+
+/**
+ * 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_has_theme_json() ) {
+		$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;
+		}
+
+		/*
+		 * Add the custom CSS as a separate stylesheet so any invalid CSS
+		 * entered by users does not break other global styles.
+		 */
+		$global_styles[] = array(
+			'css'            => wp_get_global_styles_custom_css(),
+			'__unstableType' => 'user',
+			'isGlobalStyles' => true,
+		);
+	} else {
+		// If there is no `theme.json` file, ensure base layout styles are still available.
+		$block_classes = array(
+			'css'            => 'base-layout-styles',
+			'__unstableType' => 'base-layout',
+			'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'] );
+	}
+	if ( isset( $editor_settings['__experimentalFeatures']['spacing']['customSpacingSize'] ) ) {
+		$editor_settings['disableCustomSpacingSizes'] = ! $editor_settings['__experimentalFeatures']['spacing']['customSpacingSize'];
+		unset( $editor_settings['__experimentalFeatures']['spacing']['customSpacingSize'] );
+	}
+
+	if ( isset( $editor_settings['__experimentalFeatures']['spacing']['spacingSizes'] ) ) {
+		$spacing_sizes_by_origin         = $editor_settings['__experimentalFeatures']['spacing']['spacingSizes'];
+		$editor_settings['spacingSizes'] = isset( $spacing_sizes_by_origin['custom'] ) ?
+			$spacing_sizes_by_origin['custom'] : (
+				isset( $spacing_sizes_by_origin['theme'] ) ?
+					$spacing_sizes_by_origin['theme'] :
+					$spacing_sizes_by_origin['default']
+			);
+	}
+
+	$editor_settings['__unstableResolvedAssets']         = _wp_get_iframed_editor_assets();
+	$editor_settings['__unstableIsBlockBasedTheme']      = wp_is_block_theme();
+	$editor_settings['localAutosaveInterval']            = 15;
+	$editor_settings['disableLayoutStyles']              = current_theme_supports( 'disable-layout-styles' );
+	$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' ),
+			)
+		),
+	);
+
+	$post_content_block_attributes = wp_get_post_content_block_attributes();
+
+	if ( isset( $post_content_block_attributes ) ) {
+		$editor_settings['postContentAttributes'] = $post_content_block_attributes;
+	}
+
+	/**
+	 * 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|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|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|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;
+}
+
+/**
+ * Returns the classic theme supports settings for block editor.
+ *
+ * @since 6.2.0
+ *
+ * @return array The classic theme supports settings.
+ */
+function get_classic_theme_supports_block_editor_settings() {
+	$theme_settings = array(
+		'disableCustomColors'    => get_theme_support( 'disable-custom-colors' ),
+		'disableCustomFontSizes' => get_theme_support( 'disable-custom-font-sizes' ),
+		'disableCustomGradients' => get_theme_support( 'disable-custom-gradients' ),
+		'disableLayoutStyles'    => get_theme_support( 'disable-layout-styles' ),
+		'enableCustomLineHeight' => get_theme_support( 'custom-line-height' ),
+		'enableCustomSpacing'    => get_theme_support( 'custom-spacing' ),
+		'enableCustomUnits'      => get_theme_support( 'custom-units' ),
+	);
+
+	// Theme settings.
+	$color_palette = current( (array) get_theme_support( 'editor-color-palette' ) );
+	if ( false !== $color_palette ) {
+		$theme_settings['colors'] = $color_palette;
+	}
+
+	$font_sizes = current( (array) get_theme_support( 'editor-font-sizes' ) );
+	if ( false !== $font_sizes ) {
+		$theme_settings['fontSizes'] = $font_sizes;
+	}
+
+	$gradient_presets = current( (array) get_theme_support( 'editor-gradient-presets' ) );
+	if ( false !== $gradient_presets ) {
+		$theme_settings['gradients'] = $gradient_presets;
+	}
+
+	return $theme_settings;
+}