<?php
/**
* Classic Editor
*
* Plugin Name: Classic Editor
* Plugin URI: https://wordpress.org/plugins/classic-editor/
* Description: Enables the WordPress classic editor and the old-style Edit Post screen with TinyMCE, Meta Boxes, etc. Supports the older plugins that extend this screen.
* Version: 1.5
* Author: WordPress Contributors
* Author URI: https://github.com/WordPress/classic-editor/
* License: GPLv2 or later
* License URI: http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* Text Domain: classic-editor
* Domain Path: /languages
*
* This program is free software; you can redistribute it and/or modify it under the terms of the GNU
* General Public License version 2, as published by the Free Software Foundation. You may NOT assume
* that you can use any other version of the GPL.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
if ( ! defined( 'ABSPATH' ) ) {
die( 'Invalid request.' );
}
if ( ! class_exists( 'Classic_Editor' ) ) :
class Classic_Editor {
private static $settings;
private static $supported_post_types = array();
private function __construct() {}
public static function init_actions() {
$block_editor = has_action( 'enqueue_block_assets' );
$gutenberg = function_exists( 'gutenberg_register_scripts_and_styles' );
register_activation_hook( __FILE__, array( __CLASS__, 'activate' ) );
register_uninstall_hook( __FILE__, array( __CLASS__, 'uninstall' ) );
$settings = self::get_settings();
if ( is_multisite() ) {
add_action( 'wpmu_options', array( __CLASS__, 'network_settings' ) );
add_action( 'update_wpmu_options', array( __CLASS__, 'save_network_settings' ) );
}
if ( ! $settings['hide-settings-ui'] ) {
// Add a link to the plugin's settings and/or network admin settings in the plugins list table.
add_filter( 'plugin_action_links', array( __CLASS__, 'add_settings_link' ), 10, 2 );
add_filter( 'network_admin_plugin_action_links', array( __CLASS__, 'add_settings_link' ), 10, 2 );
add_action( 'admin_init', array( __CLASS__, 'register_settings' ) );
if ( $settings['allow-users'] ) {
// User settings.
add_action( 'personal_options_update', array( __CLASS__, 'save_user_settings' ) );
add_action( 'profile_personal_options', array( __CLASS__, 'user_settings' ) );
}
}
// Always remove the "Try Gutenberg" dashboard widget. See https://core.trac.wordpress.org/ticket/44635.
remove_action( 'try_gutenberg_panel', 'wp_try_gutenberg_panel' );
if ( ! $block_editor && ! $gutenberg ) {
return;
}
if ( $settings['allow-users'] ) {
// Also used in Gutenberg.
add_filter( 'use_block_editor_for_post', array( __CLASS__, 'choose_editor' ), 100, 2 );
if ( $gutenberg ) {
// Support older Gutenberg versions.
add_filter( 'gutenberg_can_edit_post', array( __CLASS__, 'choose_editor' ), 100, 2 );
if ( $settings['editor'] === 'classic' ) {
self::remove_gutenberg_hooks( 'some' );
}
}
add_filter( 'get_edit_post_link', array( __CLASS__, 'get_edit_post_link' ) );
add_filter( 'redirect_post_location', array( __CLASS__, 'redirect_location' ) );
add_action( 'edit_form_top', array( __CLASS__, 'add_redirect_helper' ) );
add_action( 'admin_head-edit.php', array( __CLASS__, 'add_edit_php_inline_style' ) );
add_action( 'edit_form_top', array( __CLASS__, 'remember_classic_editor' ) );
add_filter( 'block_editor_settings', array( __CLASS__, 'remember_block_editor' ), 10, 2 );
// Post state (edit.php)
add_filter( 'display_post_states', array( __CLASS__, 'add_post_state' ), 10, 2 );
// Row actions (edit.php)
add_filter( 'page_row_actions', array( __CLASS__, 'add_edit_links' ), 15, 2 );
add_filter( 'post_row_actions', array( __CLASS__, 'add_edit_links' ), 15, 2 );
// Switch editors while editing a post
add_action( 'add_meta_boxes', array( __CLASS__, 'add_meta_box' ), 10, 2 );
add_action( 'enqueue_block_editor_assets', array( __CLASS__, 'enqueue_block_editor_scripts' ) );
} else {
if ( $settings['editor'] === 'classic' ) {
// Also used in Gutenberg.
// Consider disabling other Block Editor functionality.
add_filter( 'use_block_editor_for_post_type', '__return_false', 100 );
if ( $gutenberg ) {
// Support older Gutenberg versions.
add_filter( 'gutenberg_can_edit_post_type', '__return_false', 100 );
self::remove_gutenberg_hooks();
}
} else {
// `$settings['editor'] === 'block'`, nothing to do :)
return;
}
}
if ( $block_editor ) {
// Move the Privacy Page notice back under the title.
add_action( 'admin_init', array( __CLASS__, 'on_admin_init' ) );
}
if ( $gutenberg ) {
// These are handled by this plugin. All are older, not used in 5.3+.
remove_action( 'admin_init', 'gutenberg_add_edit_link_filters' );
remove_action( 'admin_print_scripts-edit.php', 'gutenberg_replace_default_add_new_button' );
remove_filter( 'redirect_post_location', 'gutenberg_redirect_to_classic_editor_when_saving_posts' );
remove_filter( 'display_post_states', 'gutenberg_add_gutenberg_post_state' );
remove_action( 'edit_form_top', 'gutenberg_remember_classic_editor_when_saving_posts' );
}
}
public static function remove_gutenberg_hooks( $remove = 'all' ) {
remove_action( 'admin_menu', 'gutenberg_menu' );
remove_action( 'admin_init', 'gutenberg_redirect_demo' );
if ( $remove !== 'all' ) {
return;
}
// Gutenberg 5.3+
remove_action( 'wp_enqueue_scripts', 'gutenberg_register_scripts_and_styles' );
remove_action( 'admin_enqueue_scripts', 'gutenberg_register_scripts_and_styles' );
remove_action( 'admin_notices', 'gutenberg_wordpress_version_notice' );
remove_action( 'rest_api_init', 'gutenberg_register_rest_widget_updater_routes' );
remove_action( 'admin_print_styles', 'gutenberg_block_editor_admin_print_styles' );
remove_action( 'admin_print_scripts', 'gutenberg_block_editor_admin_print_scripts' );
remove_action( 'admin_print_footer_scripts', 'gutenberg_block_editor_admin_print_footer_scripts' );
remove_action( 'admin_footer', 'gutenberg_block_editor_admin_footer' );
remove_action( 'admin_enqueue_scripts', 'gutenberg_widgets_init' );
remove_action( 'admin_notices', 'gutenberg_build_files_notice' );
remove_filter( 'load_script_translation_file', 'gutenberg_override_translation_file' );
remove_filter( 'block_editor_settings', 'gutenberg_extend_block_editor_styles' );
remove_filter( 'default_content', 'gutenberg_default_demo_content' );
remove_filter( 'default_title', 'gutenberg_default_demo_title' );
remove_filter( 'block_editor_settings', 'gutenberg_legacy_widget_settings' );
remove_filter( 'rest_request_after_callbacks', 'gutenberg_filter_oembed_result' );
// Previously used, compat for older Gutenberg versions.
remove_filter( 'wp_refresh_nonces', 'gutenberg_add_rest_nonce_to_heartbeat_response_headers' );
remove_filter( 'get_edit_post_link', 'gutenberg_revisions_link_to_editor' );
remove_filter( 'wp_prepare_revision_for_js', 'gutenberg_revisions_restore' );
remove_action( 'rest_api_init', 'gutenberg_register_rest_routes' );
remove_action( 'rest_api_init', 'gutenberg_add_taxonomy_visibility_field' );
remove_filter( 'registered_post_type', 'gutenberg_register_post_prepare_functions' );
remove_action( 'do_meta_boxes', 'gutenberg_meta_box_save' );
remove_action( 'submitpost_box', 'gutenberg_intercept_meta_box_render' );
remove_action( 'submitpage_box', 'gutenberg_intercept_meta_box_render' );
remove_action( 'edit_page_form', 'gutenberg_intercept_meta_box_render' );
remove_action( 'edit_form_advanced', 'gutenberg_intercept_meta_box_render' );
remove_filter( 'redirect_post_location', 'gutenberg_meta_box_save_redirect' );
remove_filter( 'filter_gutenberg_meta_boxes', 'gutenberg_filter_meta_boxes' );
remove_filter( 'body_class', 'gutenberg_add_responsive_body_class' );
remove_filter( 'admin_url', 'gutenberg_modify_add_new_button_url' ); // old
remove_action( 'admin_enqueue_scripts', 'gutenberg_check_if_classic_needs_warning_about_blocks' );
remove_filter( 'register_post_type_args', 'gutenberg_filter_post_type_labels' );
// Keep
// remove_filter( 'wp_kses_allowed_html', 'gutenberg_kses_allowedtags', 10, 2 ); // not needed in 5.0
// remove_filter( 'bulk_actions-edit-wp_block', 'gutenberg_block_bulk_actions' );
// remove_filter( 'wp_insert_post_data', 'gutenberg_remove_wpcom_markdown_support' );
// remove_filter( 'the_content', 'do_blocks', 9 );
// remove_action( 'init', 'gutenberg_register_post_types' );
// Continue to manage wpautop for posts that were edited in Gutenberg.
// remove_filter( 'wp_editor_settings', 'gutenberg_disable_editor_settings_wpautop' );
// remove_filter( 'the_content', 'gutenberg_wpautop', 8 );
}
private static function get_settings( $refresh = 'no' ) {
/**
* Can be used to override the plugin's settings. Always hides the settings UI when used (as users cannot change the settings).
*
* Has to return an associative array with two keys.
* The defaults are:
* 'editor' => 'classic', // Accepted values: 'classic', 'block'.
* 'allow-users' => false,
*
* @param boolean To override the settings return an array with the above keys.
*/
$settings = apply_filters( 'classic_editor_plugin_settings', false );
if ( is_array( $settings ) ) {
return array(
'editor' => ( isset( $settings['editor'] ) && $settings['editor'] === 'block' ) ? 'block' : 'classic',
'allow-users' => ! empty( $settings['allow-users'] ),
'hide-settings-ui' => true,
);
}
if ( ! empty( self::$settings ) && $refresh === 'no' ) {
return self::$settings;
}
if ( is_multisite() ) {
$defaults = array(
'editor' => get_network_option( null, 'classic-editor-replace' ) === 'block' ? 'block' : 'classic',
'allow-users' => false,
);
/**
* Filters the default network options.
*
* @param array $defaults The default options array. See `classic_editor_plugin_settings` for supported keys and values.
*/
$defaults = apply_filters( 'classic_editor_network_default_settings', $defaults );
if ( get_network_option( null, 'classic-editor-allow-sites' ) !== 'allow' ) {
// Per-site settings are disabled. Return default network options nad hide the settings UI.
$defaults['hide-settings-ui'] = true;
return $defaults;
}
// Override with the site options.
$editor_option = get_option( 'classic-editor-replace' );
$allow_users_option = get_option( 'classic-editor-allow-users' );
if ( $editor_option ) {
$defaults['editor'] = $editor_option;
}
if ( $allow_users_option ) {
$defaults['allow-users'] = ( $allow_users_option === 'allow' );
}
$editor = ( isset( $defaults['editor'] ) && $defaults['editor'] === 'block' ) ? 'block' : 'classic';
$allow_users = ! empty( $defaults['allow-users'] );
} else {
$allow_users = ( get_option( 'classic-editor-allow-users' ) === 'allow' );
$option = get_option( 'classic-editor-replace' );
// Normalize old options.
if ( $option === 'block' || $option === 'no-replace' ) {
$editor = 'block';
} else {
// empty( $option ) || $option === 'classic' || $option === 'replace'.
$editor = 'classic';
}
}
// Override the defaults with the user options.
if ( ( ! isset( $GLOBALS['pagenow'] ) || $GLOBALS['pagenow'] !== 'options-writing.php' ) && $allow_users ) {
$user_options = get_user_option( 'classic-editor-settings' );
if ( $user_options === 'block' || $user_options === 'classic' ) {
$editor = $user_options;
}
}
self::$settings = array(
'editor' => $editor,
'hide-settings-ui' => false,
'allow-users' => $allow_users,
);
return self::$settings;
}
private static function is_classic( $post_id = 0 ) {
if ( ! $post_id ) {
$post_id = self::get_edited_post_id();
}
if ( $post_id ) {
$settings = self::get_settings();
if ( $settings['allow-users'] && ! isset( $_GET['classic-editor__forget'] ) ) {
$which = get_post_meta( $post_id, 'classic-editor-remember', true );
if ( $which ) {
// The editor choice will be "remembered" when the post is opened in either Classic or Block editor.
if ( 'classic-editor' === $which ) {
return true;
} elseif ( 'block-editor' === $which ) {
return false;
}
}
return ( ! self::has_blocks( $post_id ) );
}
}
if ( isset( $_GET['classic-editor'] ) ) {
return true;
}
return false;
}
/**
* Get the edited post ID (early) when loading the Edit Post screen.
*/
private static function get_edited_post_id() {
if (
! empty( $_GET['post'] ) &&
! empty( $_GET['action'] ) &&
$_GET['action'] === 'edit' &&
! empty( $GLOBALS['pagenow'] ) &&
$GLOBALS['pagenow'] === 'post.php'
) {
return (int) $_GET['post']; // post_ID
}
return 0;
}
public static function register_settings() {
// Add an option to Settings -> Writing
register_setting( 'writing', 'classic-editor-replace', array(
'sanitize_callback' => array( __CLASS__, 'validate_option_editor' ),
) );
register_setting( 'writing', 'classic-editor-allow-users', array(
'sanitize_callback' => array( __CLASS__, 'validate_option_allow_users' ),
) );
add_option_whitelist( array(
'writing' => array( 'classic-editor-replace', 'classic-editor-allow-users' ),
) );
$heading_1 = __( 'Default editor for all users', 'classic-editor' );
$heading_2 = __( 'Allow users to switch editors', 'classic-editor' );
add_settings_field( 'classic-editor-1', $heading_1, array( __CLASS__, 'settings_1' ), 'writing' );
add_settings_field( 'classic-editor-2', $heading_2, array( __CLASS__, 'settings_2' ), 'writing' );
}
public static function save_user_settings( $user_id ) {
if (
isset( $_POST['classic-editor-user-settings'] ) &&
isset( $_POST['classic-editor-replace'] ) &&
wp_verify_nonce( $_POST['classic-editor-user-settings'], 'allow-user-settings' )
) {
$user_id = (int) $user_id;
if ( $user_id !== get_current_user_id() && ! current_user_can( 'edit_user', $user_id ) ) {
return;
}
$editor = self::validate_option_editor( $_POST['classic-editor-replace'] );
update_user_option( $user_id, 'classic-editor-settings', $editor );
}
}
/**
* Validate
*/
public static function validate_option_editor( $value ) {
if ( $value === 'block' ) {
return 'block';
}
return 'classic';
}
public static function validate_option_allow_users( $value ) {
if ( $value === 'allow' ) {
return 'allow';
}
return 'disallow';
}
public static function settings_1() {
$settings = self::get_settings( 'refresh' );
?>
<div class="classic-editor-options">
<p>
<input type="radio" name="classic-editor-replace" id="classic-editor-classic" value="classic"<?php if ( $settings['editor'] === 'classic' ) echo ' checked'; ?> />
<label for="classic-editor-classic"><?php _ex( 'Classic Editor', 'Editor Name', 'classic-editor' ); ?></label>
</p>
<p>
<input type="radio" name="classic-editor-replace" id="classic-editor-block" value="block"<?php if ( $settings['editor'] !== 'classic' ) echo ' checked'; ?> />
<label for="classic-editor-block"><?php _ex( 'Block Editor', 'Editor Name', 'classic-editor' ); ?></label>
</p>
</div>
<script>
jQuery( 'document' ).ready( function( $ ) {
if ( window.location.hash === '#classic-editor-options' ) {
$( '.classic-editor-options' ).closest( 'td' ).addClass( 'highlight' );
}
} );
</script>
<?php
}
public static function settings_2() {
$settings = self::get_settings( 'refresh' );
?>
<div class="classic-editor-options">
<p>
<input type="radio" name="classic-editor-allow-users" id="classic-editor-allow" value="allow"<?php if ( $settings['allow-users'] ) echo ' checked'; ?> />
<label for="classic-editor-allow"><?php _e( 'Yes', 'classic-editor' ); ?></label>
</p>
<p>
<input type="radio" name="classic-editor-allow-users" id="classic-editor-disallow" value="disallow"<?php if ( ! $settings['allow-users'] ) echo ' checked'; ?> />
<label for="classic-editor-disallow"><?php _e( 'No', 'classic-editor' ); ?></label>
</p>
</div>
<?php
}
/**
* Shown on the Profile page when allowed by admin.
*/
public static function user_settings() {
global $user_can_edit;
$settings = self::get_settings( 'update' );
if (
! defined( 'IS_PROFILE_PAGE' ) ||
! IS_PROFILE_PAGE ||
! $user_can_edit ||
! $settings['allow-users']
) {
return;
}
?>
<table class="form-table">
<tr class="classic-editor-user-options">
<th scope="row"><?php _e( 'Default Editor', 'classic-editor' ); ?></th>
<td>
<?php wp_nonce_field( 'allow-user-settings', 'classic-editor-user-settings' ); ?>
<?php self::settings_1(); ?>
</td>
</tr>
</table>
<script>jQuery( 'tr.user-rich-editing-wrap' ).before( jQuery( 'tr.classic-editor-user-options' ) );</script>
<?php
}
public static function network_settings() {
$editor = get_network_option( null, 'classic-editor-replace' );
$is_checked = ( get_network_option( null, 'classic-editor-allow-sites' ) === 'allow' );
?>
<h2 id="classic-editor-options"><?php _e( 'Editor Settings', 'classic-editor' ); ?></h2>
<table class="form-table">
<?php wp_nonce_field( 'allow-site-admin-settings', 'classic-editor-network-settings' ); ?>
<tr>
<th scope="row"><?php _e( 'Default editor for all sites', 'classic-editor' ); ?></th>
<td>
<p>
<input type="radio" name="classic-editor-replace" id="classic-editor-classic" value="classic"<?php if ( $editor !== 'block' ) echo ' checked'; ?> />
<label for="classic-editor-classic"><?php _ex( 'Classic Editor', 'Editor Name', 'classic-editor' ); ?></label>
</p>
<p>
<input type="radio" name="classic-editor-replace" id="classic-editor-block" value="block"<?php if ( $editor === 'block' ) echo ' checked'; ?> />
<label for="classic-editor-block"><?php _ex( 'Block Editor', 'Editor Name', 'classic-editor' ); ?></label>
</p>
</td>
</tr>
<tr>
<th scope="row"><?php _e( 'Change settings', 'classic-editor' ); ?></th>
<td>
<input type="checkbox" name="classic-editor-allow-sites" id="classic-editor-allow-sites" value="allow"<?php if ( $is_checked ) echo ' checked'; ?>>
<label for="classic-editor-allow-sites"><?php _e( 'Allow site admins to change settings', 'classic-editor' ); ?></label>
<p class="description"><?php _e( 'By default the Block Editor is replaced with the Classic Editor and users cannot switch editors.', 'classic-editor' ); ?></p>
</td>
</tr>
</table>
<?php
}
public static function save_network_settings() {
if (
isset( $_POST['classic-editor-network-settings'] ) &&
current_user_can( 'manage_network_options' ) &&
wp_verify_nonce( $_POST['classic-editor-network-settings'], 'allow-site-admin-settings' )
) {
if ( isset( $_POST['classic-editor-replace'] ) && $_POST['classic-editor-replace'] === 'block' ) {
update_network_option( null, 'classic-editor-replace', 'block' );
} else {
update_network_option( null, 'classic-editor-replace', 'classic' );
}
if ( isset( $_POST['classic-editor-allow-sites'] ) && $_POST['classic-editor-allow-sites'] === 'allow' ) {
update_network_option( null, 'classic-editor-allow-sites', 'allow' );
} else {
update_network_option( null, 'classic-editor-allow-sites', 'disallow' );
}
}
}
/**
* Add a hidden field in edit-form-advanced.php
* to help redirect back to the Classic Editor on saving.
*/
public static function add_redirect_helper() {
?>
<input type="hidden" name="classic-editor" value="" />
<?php
}
/**
* Remember when the Classic Editor was used to edit a post.
*/
public static function remember_classic_editor( $post ) {
$post_type = get_post_type( $post );
if ( $post_type && post_type_supports( $post_type, 'editor' ) ) {
self::remember( $post->ID, 'classic-editor' );
}
}
/**
* Remember when the Block Editor was used to edit a post.
*/
public static function remember_block_editor( $editor_settings, $post ) {
$post_type = get_post_type( $post );
if ( $post_type && self::can_edit_post_type( $post_type ) ) {
self::remember( $post->ID, 'block-editor' );
}
return $editor_settings;
}
private static function remember( $post_id, $editor ) {
if ( get_post_meta( $post_id, 'classic-editor-remember', true ) !== $editor ) {
update_post_meta( $post_id, 'classic-editor-remember', $editor );
}
}
/**
* Choose which editor to use for a post.
*
* Passes through `$which_editor` for Block Editor (it's sets to `true` but may be changed by another plugin).
*
* @uses `use_block_editor_for_post` filter.
*
* @param boolean $use_block_editor True for Block Editor, false for Classic Editor.
* @param WP_Post $post The post being edited.
* @return boolean True for Block Editor, false for Classic Editor.
*/
public static function choose_editor( $use_block_editor, $post ) {
$settings = self::get_settings();
$editors = self::get_enabled_editors_for_post( $post );
// If no editor is supported, pass through `$use_block_editor`.
if ( ! $editors['block_editor'] && ! $editors['classic_editor'] ) {
return $use_block_editor;
}
// Open the default editor when no $post and for "Add New" links,
// or the alternate editor when the user is switching editors.
if ( empty( $post->ID ) || $post->post_status === 'auto-draft' ) {
if (
( $settings['editor'] === 'classic' && ! isset( $_GET['classic-editor__forget'] ) ) || // Add New
( isset( $_GET['classic-editor'] ) && isset( $_GET['classic-editor__forget'] ) ) // Switch to Classic Editor when no draft post.
) {
$use_block_editor = false;
}
} elseif ( self::is_classic( $post->ID ) ) {
$use_block_editor = false;
}
// Enforce the editor if set by plugins.
if ( $use_block_editor && ! $editors['block_editor'] ) {
$use_block_editor = false;
} elseif ( ! $use_block_editor && ! $editors['classic_editor'] && $editors['block_editor'] ) {
$use_block_editor = true;
}
return $use_block_editor;
}
/**
* Keep the `classic-editor` query arg through redirects when saving posts.
*/
public static function redirect_location( $location ) {
if (
isset( $_REQUEST['classic-editor'] ) ||
( isset( $_POST['_wp_http_referer'] ) && strpos( $_POST['_wp_http_referer'], '&classic-editor' ) !== false )
) {
$location = add_query_arg( 'classic-editor', '', $location );
}
return $location;
}
/**
* Keep the `classic-editor` query arg when looking at revisions.
*/
public static function get_edit_post_link( $url ) {
$settings = self::get_settings();
if ( isset( $_REQUEST['classic-editor'] ) || $settings['editor'] === 'classic' ) {
$url = add_query_arg( 'classic-editor', '', $url );
}
return $url;
}
public static function add_meta_box( $post_type, $post ) {
$editors = self::get_enabled_editors_for_post( $post );
if ( ! $editors['block_editor'] || ! $editors['classic_editor'] ) {
// Editors cannot be switched.
return;
}
$id = 'classic-editor-switch-editor';
$title = __( 'Editor', 'classic-editor' );
$callback = array( __CLASS__, 'do_meta_box' );
$args = array(
'__back_compat_meta_box' => true,
);
add_meta_box( $id, $title, $callback, null, 'side', 'default', $args );
}
public static function do_meta_box( $post ) {
$edit_url = get_edit_post_link( $post->ID, 'raw' );
// Switching to Block Editor.
$edit_url = remove_query_arg( 'classic-editor', $edit_url );
// Forget the previous value when going to a specific editor.
$edit_url = add_query_arg( 'classic-editor__forget', '', $edit_url );
?>
<p style="margin: 1em 0;">
<a href="<?php echo esc_url( $edit_url ); ?>"><?php _e( 'Switch to Block Editor', 'classic-editor' ); ?></a>
</p>
<?php
}
public static function enqueue_block_editor_scripts() {
$editors = self::get_enabled_editors_for_post( $GLOBALS['post'] );
if ( ! $editors['classic_editor'] ) {
// Editor cannot be switched.
return;
}
wp_enqueue_script(
'classic-editor-plugin',
plugins_url( 'js/block-editor-plugin.js', __FILE__ ),
array( 'wp-element', 'wp-components', 'lodash' ),
'1.4',
true
);
wp_localize_script(
'classic-editor-plugin',
'classicEditorPluginL10n',
array( 'linkText' => __( 'Switch to Classic Editor', 'classic-editor' ) )
);
}
/**
* Add a link to the settings on the Plugins screen.
*/
public static function add_settings_link( $links, $file ) {
$settings = self::get_settings();
if ( $file === 'classic-editor/classic-editor.php' && ! $settings['hide-settings-ui'] && current_user_can( 'manage_options' ) ) {
if ( current_filter() === 'plugin_action_links' ) {
$url = admin_url( 'options-writing.php#classic-editor-options' );
} else {
$url = admin_url( '/network/settings.php#classic-editor-options' );
}
// Prevent warnings in PHP 7.0+ when a plugin uses this filter incorrectly.
$links = (array) $links;
$links[] = sprintf( '<a href="%s">%s</a>', $url, __( 'Settings', 'classic-editor' ) );
}
return $links;
}
private static function can_edit_post_type( $post_type ) {
$can_edit = false;
if ( function_exists( 'gutenberg_can_edit_post_type' ) ) {
$can_edit = gutenberg_can_edit_post_type( $post_type );
} elseif ( function_exists( 'use_block_editor_for_post_type' ) ) {
$can_edit = use_block_editor_for_post_type( $post_type );
}
return $can_edit;
}
/**
* Checks which editors are enabled for the post type.
*
* @param string $post_type The post type.
* @return array Associative array of the editors and whether they are enabled for the post type.
*/
private static function get_enabled_editors_for_post_type( $post_type ) {
if ( isset( self::$supported_post_types[ $post_type ] ) ) {
return self::$supported_post_types[ $post_type ];
}
$classic_editor = post_type_supports( $post_type, 'editor' );
$block_editor = self::can_edit_post_type( $post_type );
$editors = array(
'classic_editor' => $classic_editor,
'block_editor' => $block_editor,
);
/**
* Filters the editors that are enabled for the post type.
*
* @param array $editors Associative array of the editors and whether they are enabled for the post type.
* @param string $post_type The post type.
*/
$editors = apply_filters( 'classic_editor_enabled_editors_for_post_type', $editors, $post_type );
self::$supported_post_types[ $post_type ] = $editors;
return $editors;
}
/**
* Checks which editors are enabled for the post.
*
* @param WP_Post $post The post object.
* @return array Associative array of the editors and whether they are enabled for the post.
*/
private static function get_enabled_editors_for_post( $post ) {
$post_type = get_post_type( $post );
if ( ! $post_type ) {
return array(
'classic_editor' => false,
'block_editor' => false,
);
}
$editors = self::get_enabled_editors_for_post_type( $post_type );
/**
* Filters the editors that are enabled for the post.
*
* @param array $editors Associative array of the editors and whether they are enabled for the post.
* @param WP_Post $post The post object.
*/
return apply_filters( 'classic_editor_enabled_editors_for_post', $editors, $post );
}
/**
* Adds links to the post/page screens to edit any post or page in
* the Classic Editor or Block Editor.
*
* @param array $actions Post actions.
* @param WP_Post $post Edited post.
* @return array Updated post actions.
*/
public static function add_edit_links( $actions, $post ) {
// This is in Gutenberg, don't duplicate it.
if ( array_key_exists( 'classic', $actions ) ) {
unset( $actions['classic'] );
}
if ( ! array_key_exists( 'edit', $actions ) ) {
return $actions;
}
$edit_url = get_edit_post_link( $post->ID, 'raw' );
if ( ! $edit_url ) {
return $actions;
}
$editors = self::get_enabled_editors_for_post( $post );
// Do not show the links if only one editor is available.
if ( ! $editors['classic_editor'] || ! $editors['block_editor'] ) {
return $actions;
}
// Forget the previous value when going to a specific editor.
$edit_url = add_query_arg( 'classic-editor__forget', '', $edit_url );
// Build the edit actions. See also: WP_Posts_List_Table::handle_row_actions().
$title = _draft_or_post_title( $post->ID );
// Link to the Block Editor.
$url = remove_query_arg( 'classic-editor', $edit_url );
$text = _x( 'Edit (Block Editor)', 'Editor Name', 'classic-editor' );
/* translators: %s: post title */
$label = sprintf( __( 'Edit “%s” in the Block Editor', 'classic-editor' ), $title );
$edit_block = sprintf( '<a href="%s" aria-label="%s">%s</a>', esc_url( $url ), esc_attr( $label ), $text );
// Link to the Classic Editor.
$url = add_query_arg( 'classic-editor', '', $edit_url );
$text = _x( 'Edit (Classic Editor)', 'Editor Name', 'classic-editor' );
/* translators: %s: post title */
$label = sprintf( __( 'Edit “%s” in the Classic Editor', 'classic-editor' ), $title );
$edit_classic = sprintf( '<a href="%s" aria-label="%s">%s</a>', esc_url( $url ), esc_attr( $label ), $text );
$edit_actions = array(
'classic-editor-block' => $edit_block,
'classic-editor-classic' => $edit_classic,
);
// Insert the new Edit actions instead of the Edit action.
$edit_offset = array_search( 'edit', array_keys( $actions ), true );
array_splice( $actions, $edit_offset, 1, $edit_actions );
return $actions;
}
/**
* Show the editor that will be used in a "post state" in the Posts list table.
*/
public static function add_post_state( $post_states, $post ) {
if ( get_post_status( $post ) === 'trash' ) {
return $post_states;
}
$editors = self::get_enabled_editors_for_post( $post );
if ( ! $editors['classic_editor'] && ! $editors['block_editor'] ) {
return $post_states;
} elseif ( $editors['classic_editor'] && ! $editors['block_editor'] ) {
// Forced to Classic Editor.
$state = '<span class="classic-editor-forced-state">' . _x( 'Classic Editor', 'Editor Name', 'classic-editor' ) . '</span>';
} elseif ( ! $editors['classic_editor'] && $editors['block_editor'] ) {
// Forced to Block Editor.
$state = '<span class="classic-editor-forced-state">' . _x( 'Block Editor', 'Editor Name', 'classic-editor' ) . '</span>';
} else {
$last_editor = get_post_meta( $post->ID, 'classic-editor-remember', true );
if ( $last_editor ) {
$is_classic = ( $last_editor === 'classic-editor' );
} elseif ( ! empty( $post->post_content ) ) {
$is_classic = ! self::has_blocks( $post->post_content );
} else {
$settings = self::get_settings();
$is_classic = ( $settings['editor'] === 'classic' );
}
$state = $is_classic ? _x( 'Classic Editor', 'Editor Name', 'classic-editor' ) : _x( 'Block Editor', 'Editor Name', 'classic-editor' );
}
// Fix PHP 7+ warnings if another plugin returns unexpected type.
$post_states = (array) $post_states;
$post_states['classic-editor-plugin'] = $state;
return $post_states;
}
public static function add_edit_php_inline_style() {
?>
<style>
.classic-editor-forced-state {
font-style: italic;
font-weight: 400;
color: #72777c;
font-size: small;
}
</style>
<?php
}
public static function on_admin_init() {
global $pagenow;
if ( $pagenow !== 'post.php' ) {
return;
}
$settings = self::get_settings();
$post_id = self::get_edited_post_id();
if ( $post_id && ( $settings['editor'] === 'classic' || self::is_classic( $post_id ) ) ) {
// Move the Privacy Policy help notice back under the title field.
remove_action( 'admin_notices', array( 'WP_Privacy_Policy_Content', 'notice' ) );
add_action( 'edit_form_after_title', array( 'WP_Privacy_Policy_Content', 'notice' ) );
}
}
// Need to support WP < 5.0
private static function has_blocks( $post = null ) {
if ( ! is_string( $post ) ) {
$wp_post = get_post( $post );
if ( $wp_post instanceof WP_Post ) {
$post = $wp_post->post_content;
}
}
return false !== strpos( (string) $post, '<!-- wp:' );
}
/**
* Set defaults on activation.
*/
public static function activate() {
if ( is_multisite() ) {
add_network_option( null, 'classic-editor-replace', 'classic' );
add_network_option( null, 'classic-editor-allow-sites', 'disallow' );
}
add_option( 'classic-editor-replace', 'classic' );
add_option( 'classic-editor-allow-users', 'disallow' );
}
/**
* Delete the options on uninstall.
*/
public static function uninstall() {
if ( is_multisite() ) {
delete_network_option( null, 'classic-editor-replace' );
delete_network_option( null, 'classic-editor-allow-sites' );
}
delete_option( 'classic-editor-replace' );
delete_option( 'classic-editor-allow-users' );
}
}
add_action( 'plugins_loaded', array( 'Classic_Editor', 'init_actions' ) );
endif;
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