File includes/types/CMB2_Type_Textarea_Code.php

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<?php
/**
 * CMB textarea_code field type
 *
 * @since  2.2.2
 *
 * @category  WordPress_Plugin
 * @package   CMB2
 * @author    CMB2 team
 * @license   GPL-2.0+
 * @link      https://cmb2.io
 */
class CMB2_Type_Textarea_Code extends CMB2_Type_Textarea {

    /**
     * Handles outputting an 'textarea' element
     *
     * @since  1.1.0
     * @param  array $args Override arguments
     * @return string       Form textarea element
     */
    public function render( $args = array() ) {
        $args = wp_parse_args( $args, array(
            'class' => 'cmb2-textarea-code',
            'desc'  => '</pre>' . $this->_desc( true ),
        ) );

        if ( true !== $this->field->options( 'disable_codemirror' )
            && function_exists( 'wp_enqueue_code_editor' ) ) {
            $args['js_dependencies'] = array( 'code-editor' );
        } else {
            $args['class'] = rtrim( $args['class'] ) . ' disable-codemirror';
        }

        return $this->rendered(
            sprintf( '<pre>%s', parent::render( $args ) )
        );
    }
}

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