diff options
Diffstat (limited to 'plugins/classic-editor/classic-editor.php')
| -rw-r--r-- | plugins/classic-editor/classic-editor.php | 941 |
1 files changed, 941 insertions, 0 deletions
diff --git a/plugins/classic-editor/classic-editor.php b/plugins/classic-editor/classic-editor.php new file mode 100644 index 00000000..afac3c20 --- /dev/null +++ b/plugins/classic-editor/classic-editor.php @@ -0,0 +1,941 @@ +<?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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