wp_add_editor_classic_theme_styles

wp_add_editor_classic_theme_styles: 这个函数用于在内容编辑器中添加经典编辑器的样式。它不需要任何参数。

在编辑器的经典主题上加载经典主题样式。

这是对按钮块向后兼容的需要。

function wp_add_editor_classic_theme_styles( $editor_settings ) {
	if ( WP_Theme_JSON_Resolver::theme_has_support() ) {
		return $editor_settings;
	}
	$suffix = wp_scripts_get_suffix();
	$classic_theme_styles = ABSPATH . WPINC . "/css/classic-themes$suffix.css";

	// This follows the pattern of get_block_editor_theme_styles,
	// but we can't use get_block_editor_theme_styles directly as it
	// only handles external files or theme files.
	$classic_theme_styles_settings = array(
		'css'            => file_get_contents( $classic_theme_styles ),
		'__unstableType' => 'core',
		'isGlobalStyles' => false,
	);

	// Add these settings to the start of the array so that themes can override them.
	array_unshift( $editor_settings['styles'], $classic_theme_styles_settings );

	return $editor_settings;
}