如何实现WordPress网站降级（用于解决插件和主题问题）
wp_default_styles ( $styles )
wp_default_styles是一个WordPress函数，负责注册加载在WordPress站点每个页面上的默认样式。这些样式提供了核心功能，是WordPress正常运行所必需的。
为$styles对象分配默认样式。
没有任何东西被返回，因为$styles参数是通过引用传递的。意味着无论传递什么对象都会被更新，而不必将传递的变量重新分配到相同的值。这就节省了内存。
添加默认样式并不是唯一的任务，它还分配了base_url 属性、默认版本，以及对象的文本方向。
function wp_default_styles( $styles ) {
global $editor_styles;
// Include an unmodified $wp_version.
require ABSPATH . WPINC . '/version.php';
if ( ! defined( 'SCRIPT_DEBUG' ) ) {
define( 'SCRIPT_DEBUG', false !== strpos( $wp_version, '-src' ) );
}
$guessurl = site_url();
if ( ! $guessurl ) {
$guessurl = wp_guess_url();
}
$styles->base_url = $guessurl;
$styles->content_url = defined( 'WP_CONTENT_URL' ) ? WP_CONTENT_URL : '';
$styles->default_version = get_bloginfo( 'version' );
$styles->text_direction = function_exists( 'is_rtl' ) && is_rtl() ? 'rtl' : 'ltr';
$styles->default_dirs = array( '/wp-admin/', '/wp-includes/css/' );
// Open Sans is no longer used by core, but may be relied upon by themes and plugins.
$open_sans_font_url = '';
/*
* translators: If there are characters in your language that are not supported
* by Open Sans, translate this to 'off'. Do not translate into your own language.
*/
if ( 'off' !== _x( 'on', 'Open Sans font: on or off' ) ) {
$subsets = 'latin,latin-ext';
/*
* translators: To add an additional Open Sans character subset specific to your language,
* translate this to 'greek', 'cyrillic' or 'vietnamese'. Do not translate into your own language.
*/
$subset = _x( 'no-subset', 'Open Sans font: add new subset (greek, cyrillic, vietnamese)' );
if ( 'cyrillic' === $subset ) {
$subsets .= ',cyrillic,cyrillic-ext';
} elseif ( 'greek' === $subset ) {
$subsets .= ',greek,greek-ext';
} elseif ( 'vietnamese' === $subset ) {
$subsets .= ',vietnamese';
}
// Hotlink Open Sans, for now.
$open_sans_font_url = "https://fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,300,400,600&subset=$subsets&display=fallback";
}
// Register a stylesheet for the selected admin color scheme.
$styles->add( 'colors', true, array( 'wp-admin', 'buttons' ) );
$suffix = SCRIPT_DEBUG ? '' : '.min';
// Admin CSS.
$styles->add( 'common', "/wp-admin/css/common$suffix.css" );
$styles->add( 'forms', "/wp-admin/css/forms$suffix.css" );
$styles->add( 'admin-menu', "/wp-admin/css/admin-menu$suffix.css" );
$styles->add( 'dashboard', "/wp-admin/css/dashboard$suffix.css" );
$styles->add( 'list-tables', "/wp-admin/css/list-tables$suffix.css" );
$styles->add( 'edit', "/wp-admin/css/edit$suffix.css" );
$styles->add( 'revisions', "/wp-admin/css/revisions$suffix.css" );
$styles->add( 'media', "/wp-admin/css/media$suffix.css" );
$styles->add( 'themes', "/wp-admin/css/themes$suffix.css" );
$styles->add( 'about', "/wp-admin/css/about$suffix.css" );
$styles->add( 'nav-menus', "/wp-admin/css/nav-menus$suffix.css" );
$styles->add( 'widgets', "/wp-admin/css/widgets$suffix.css", array( 'wp-pointer' ) );
$styles->add( 'site-icon', "/wp-admin/css/site-icon$suffix.css" );
$styles->add( 'l10n', "/wp-admin/css/l10n$suffix.css" );
$styles->add( 'code-editor', "/wp-admin/css/code-editor$suffix.css", array( 'wp-codemirror' ) );
$styles->add( 'site-health', "/wp-admin/css/site-health$suffix.css" );
$styles->add( 'wp-admin', false, array( 'dashicons', 'common', 'forms', 'admin-menu', 'dashboard', 'list-tables', 'edit', 'revisions', 'media', 'themes', 'about', 'nav-menus', 'widgets', 'site-icon', 'l10n' ) );
$styles->add( 'login', "/wp-admin/css/login$suffix.css", array( 'dashicons', 'buttons', 'forms', 'l10n' ) );
$styles->add( 'install', "/wp-admin/css/install$suffix.css", array( 'dashicons', 'buttons', 'forms', 'l10n' ) );
$styles->add( 'wp-color-picker', "/wp-admin/css/color-picker$suffix.css" );
$styles->add( 'customize-controls', "/wp-admin/css/customize-controls$suffix.css", array( 'wp-admin', 'colors', 'imgareaselect' ) );
$styles->add( 'customize-widgets', "/wp-admin/css/customize-widgets$suffix.css", array( 'wp-admin', 'colors' ) );
$styles->add( 'customize-nav-menus', "/wp-admin/css/customize-nav-menus$suffix.css", array( 'wp-admin', 'colors' ) );
// Common dependencies.
$styles->add( 'buttons', "/wp-includes/css/buttons$suffix.css" );
$styles->add( 'dashicons', "/wp-includes/css/dashicons$suffix.css" );
// Includes CSS.
$styles->add( 'admin-bar', "/wp-includes/css/admin-bar$suffix.css", array( 'dashicons' ) );
$styles->add( 'wp-auth-check', "/wp-includes/css/wp-auth-check$suffix.css", array( 'dashicons' ) );
$styles->add( 'editor-buttons', "/wp-includes/css/editor$suffix.css", array( 'dashicons' ) );
$styles->add( 'media-views', "/wp-includes/css/media-views$suffix.css", array( 'buttons', 'dashicons', 'wp-mediaelement' ) );
$styles->add( 'wp-pointer', "/wp-includes/css/wp-pointer$suffix.css", array( 'dashicons' ) );
$styles->add( 'customize-preview', "/wp-includes/css/customize-preview$suffix.css", array( 'dashicons' ) );
$styles->add( 'wp-embed-template-ie', "/wp-includes/css/wp-embed-template-ie$suffix.css" );
$styles->add_data( 'wp-embed-template-ie', 'conditional', 'lte IE 8' );
// External libraries and friends.
$styles->add( 'imgareaselect', '/wp-includes/js/imgareaselect/imgareaselect.css', array(), '0.9.8' );
$styles->add( 'wp-jquery-ui-dialog', "/wp-includes/css/jquery-ui-dialog$suffix.css", array( 'dashicons' ) );
$styles->add( 'mediaelement', '/wp-includes/js/mediaelement/mediaelementplayer-legacy.min.css', array(), '4.2.17' );
$styles->add( 'wp-mediaelement', "/wp-includes/js/mediaelement/wp-mediaelement$suffix.css", array( 'mediaelement' ) );
$styles->add( 'thickbox', '/wp-includes/js/thickbox/thickbox.css', array( 'dashicons' ) );
$styles->add( 'wp-codemirror', '/wp-includes/js/codemirror/codemirror.min.css', array(), '5.29.1-alpha-ee20357' );
// Deprecated CSS.
$styles->add( 'deprecated-media', "/wp-admin/css/deprecated-media$suffix.css" );
$styles->add( 'farbtastic', "/wp-admin/css/farbtastic$suffix.css", array(), '1.3u1' );
$styles->add( 'jcrop', '/wp-includes/js/jcrop/jquery.Jcrop.min.css', array(), '0.9.15' );
$styles->add( 'colors-fresh', false, array( 'wp-admin', 'buttons' ) ); // Old handle.
$styles->add( 'open-sans', $open_sans_font_url ); // No longer used in core as of 4.6.
// Noto Serif is no longer used by core, but may be relied upon by themes and plugins.
$fonts_url = '';
/*
* translators: Use this to specify the proper Google Font name and variants
* to load that is supported by your language. Do not translate.
* Set to 'off' to disable loading.
*/
$font_family = _x( 'Noto Serif:400,400i,700,700i', 'Google Font Name and Variants' );
if ( 'off' !== $font_family ) {
$fonts_url = 'https://fonts.googleapis.com/css?family=' . urlencode( $font_family );
}
$styles->add( 'wp-editor-font', $fonts_url ); // No longer used in core as of 5.7.
$block_library_theme_path = WPINC . "/css/dist/block-library/theme$suffix.css";
$styles->add( 'wp-block-library-theme', "/$block_library_theme_path" );
$styles->add_data( 'wp-block-library-theme', 'path', ABSPATH . $block_library_theme_path );
$styles->add(
'wp-reset-editor-styles',
"/wp-includes/css/dist/block-library/reset$suffix.css",
array( 'common', 'forms' ) // Make sure the reset is loaded after the default WP Admin styles.
);
$styles->add(
'wp-editor-classic-layout-styles',
"/wp-includes/css/dist/edit-post/classic$suffix.css",
array()
);
$wp_edit_blocks_dependencies = array(
'wp-components',
'wp-editor',
// This need to be added before the block library styles,
// The block library styles override the "reset" styles.
'wp-reset-editor-styles',
'wp-block-library',
'wp-reusable-blocks',
);
// Only load the default layout and margin styles for themes without theme.json file.
if ( ! WP_Theme_JSON_Resolver::theme_has_support() ) {
$wp_edit_blocks_dependencies[] = 'wp-editor-classic-layout-styles';
}
if ( ! is_array( $editor_styles ) || count( $editor_styles ) === 0 ) {
// Include opinionated block styles if no $editor_styles are declared, so the editor never appears broken.
$wp_edit_blocks_dependencies[] = 'wp-block-library-theme';
}
$styles->add(
'wp-edit-blocks',
"/wp-includes/css/dist/block-library/editor$suffix.css",
$wp_edit_blocks_dependencies
);
$package_styles = array(
'block-editor' => array( 'wp-components' ),
'block-library' => array(),
'block-directory' => array(),
'components' => array(),
'edit-post' => array(
'wp-components',
'wp-block-editor',
'wp-editor',
'wp-edit-blocks',
'wp-block-library',
'wp-nux',
),
'editor' => array(
'wp-components',
'wp-block-editor',
'wp-nux',
'wp-reusable-blocks',
),
'format-library' => array(),
'list-reusable-blocks' => array( 'wp-components' ),
'reusable-blocks' => array( 'wp-components' ),
'nux' => array( 'wp-components' ),
'widgets' => array(
'wp-components',
),
'edit-widgets' => array(
'wp-widgets',
'wp-block-editor',
'wp-edit-blocks',
'wp-block-library',
'wp-reusable-blocks',
),
'customize-widgets' => array(
'wp-widgets',
'wp-block-editor',
'wp-edit-blocks',
'wp-block-library',
'wp-reusable-blocks',
),
'edit-site' => array(
'wp-components',
'wp-block-editor',
'wp-edit-blocks',
),
);
foreach ( $package_styles as $package => $dependencies ) {
$handle = 'wp-' . $package;
$path = "/wp-includes/css/dist/$package/style$suffix.css";
if ( 'block-library' === $package && wp_should_load_separate_core_block_assets() ) {
$path = "/wp-includes/css/dist/$package/common$suffix.css";
}
$styles->add( $handle, $path, $dependencies );
$styles->add_data( $handle, 'path', ABSPATH . $path );
}
// RTL CSS.
$rtl_styles = array(
// Admin CSS.
'common',
'forms',
'admin-menu',
'dashboard',
'list-tables',
'edit',
'revisions',
'media',
'themes',
'about',
'nav-menus',
'widgets',
'site-icon',
'l10n',
'install',
'wp-color-picker',
'customize-controls',
'customize-widgets',
'customize-nav-menus',
'customize-preview',
'login',
'site-health',
// Includes CSS.
'buttons',
'admin-bar',
'wp-auth-check',
'editor-buttons',
'media-views',
'wp-pointer',
'wp-jquery-ui-dialog',
// Package styles.
'wp-reset-editor-styles',
'wp-editor-classic-layout-styles',
'wp-block-library-theme',
'wp-edit-blocks',
'wp-block-editor',
'wp-block-library',
'wp-block-directory',
'wp-components',
'wp-customize-widgets',
'wp-edit-post',
'wp-edit-site',
'wp-edit-widgets',
'wp-editor',
'wp-format-library',
'wp-list-reusable-blocks',
'wp-reusable-blocks',
'wp-nux',
'wp-widgets',
// Deprecated CSS.
'deprecated-media',
'farbtastic',
);
foreach ( $rtl_styles as $rtl_style ) {
$styles->add_data( $rtl_style, 'rtl', 'replace' );
if ( $suffix ) {
$styles->add_data( $rtl_style, 'suffix', $suffix );
}
}
}
