_wp_get_iframed_editor_assets()WP 6.0.0

Collect the block editor assets that need to be loaded into the editor's iframe.

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

Hooks from the function

Return

Array. The block editor assets.

Usage

_wp_get_iframed_editor_assets();

Notes

  • Global. WP_Styles. $wp_styles The WP_Styles current instance.
  • Global. WP_Scripts. $wp_scripts The WP_Scripts current instance.

Changelog

Since 6.0.0 Introduced.

_wp_get_iframed_editor_assets() code WP 6.4.3

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,
	);
}