acf-code-field.php

<?php

/*
Plugin Name: Advanced Custom Fields: ACF Code Field
Plugin URI: http://petetasker.com
Description: ACF Code field using Codemirror
Version: 1.8
Author: Peter Tasker
Author URI: http://petetasker.com
License: GPLv2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
*/

// 1. set text domain
// Reference: https://codex.wordpress.org/Function_Reference/load_plugin_textdomain
load_plugin_textdomain( 'acf-code-field', false, dirname( plugin_basename( __FILE__ ) ) . '/lang/' );

define( 'ACFCF_CODEMIRROR_VERSION', 'codemirror-5.23.0' );
define( 'ACFCF_PLUGIN_DIR', dirname( __FILE__ ) );

include_once( 'lib/class.acf-code-field-util.php' );

// 2. Include field type for ACF5
// $version = 5 and can be ignored until ACF6 exists
function include_field_types_code_field($version)
{
    include_once( 'acf-code-field-v5.php' );
}

add_action( 'acf/include_field_types', 'include_field_types_code_field' );


// 3. Include field type for ACF4
function register_fields_code_field()
{
    include_once( 'acf-code-field-v4.php' );
}

add_action( 'acf/register_fields', 'register_fields_code_field' );


add_action( 'admin_notices', 'acf_check' );

function acf_check()
{
    if (! class_exists( 'acf' ) && current_user_can( 'manage_options' )) {
        $class   = 'notice notice-error';
        $message = sprintf( __( 'Uh-oh. ACF not installed. Please install the <a href="%s" class="thickbox">Advanced Custom Fields plugin.</a>', 'sample-text-domain' ), '/wp-admin/plugin-install.php?tab=plugin-information&plugin=advanced-custom-fields&TB_iframe=true&width=600&height=550' );
        printf( '<div class="%1$s"><p>%2$s</p></div>', $class, $message );
    }
}