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classic-editor
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classic-editor.php
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<?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: 1.6 * 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 * Requires at least: 4.9 * Requires PHP: 5.2.4 * * 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' ) ); $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 the classic or the 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' ), ) ); $allowed_options = array( 'writing' => array( 'classic-editor-replace', 'classic-editor-allow-users' ), ); if ( function_exists( 'add_allowed_options' ) ) { add_allowed_options( $allowed_options ); } else { add_option_whitelist( $allowed_options ); } $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() { register_uninstall_hook( __FILE__, array( __CLASS__, 'uninstall' ) ); 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;