Bumped version to 0.0.24

VERSION

@@ -1 +1 @@
-v0.0.23
+v0.0.24

VERSIONLOG

@@ -22,3 +22,4 @@ v0.0.20
 v0.0.21
 v0.0.22
 v0.0.23
+v0.0.24

classic.php

@@ -0,0 +1,930 @@
+<?php
+
+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 &#8220;%s&#8221; 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 &#8220;%s&#8221; 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;

package.json

@@ -1,6 +1,6 @@
 {
   "name": "dagsplug",
-  "version": "0.0.23",
+  "version": "0.0.24",
   "description": "",
   "main": "script_backend.js",
   "scripts": {

plugin.php

@@ -4,14 +4,14 @@
  Plugin URI: https://git.tum.dk/tum.dk/dagsplug/
  Description: Tools 
  Author: iskedk
- Version: 0.0.23
+ Version: 0.0.24
  Date: Fri Jan 31 2014 13:19:21 GMT+0100 (CET)
  Author URI: https://iske.dk/
  */
 
 $wp_dagsopt = new dagsopt ( );
 class dagsopt {
-	var $version = "0.0.23";
+	var $version = "0.0.24";
 	var $publish_date = "2021-01-23";
 	var $pluginname;
 	var $plugintitle;