Easy Custom Fields Richtext area

gistfile1.php

if( !class_exists( 'Easy_CF_Field_RichText' )) {
	class Easy_CF_Field_RichText extends Easy_CF_Field {
		public function print_form() {
			$class = ( empty( $this->_field_data['class'] ) ) ? $this->_field_data['id'] . '_class' :  $this->_field_data['class'];
            $input_class = ( empty( $this->_field_data['input_class'] ) ) ? $this->_field_data['id'] . '_input_class' :  $this->_field_data['input_class'];

            $id = ( empty( $this->_field_data['id'] ) ) ? $this->_field_data['id'] :  $this->_field_data['id'];
            $label = ( empty( $this->_field_data['label'] ) ) ? $this->_field_data['id'] :  $this->_field_data['label'];
            $value = $this->get();
            $hint = ( empty( $this->_field_data['hint'] ) ) ? '' :  '<p><em>' . $this->_field_data['hint'] . '</em></p>';
            
            printf( '<p><label><strong>%s</strong></label></p>', $label );
			wp_editor( $value, $id );
		}		
	}
}

if ( !class_exists( "Easy_CF_Validator_Richtext" ) ) {

	class Easy_CF_Validator_Richtext extends Easy_CF_Validator {
		public function get( $value='' ) {
			return base64_decode( $value );
		}

		public function set( $value='' ) {
			$value = base64_encode( wp_filter_post_kses( trim( $value ) ) );
			return $value;
		}

		public function validate( $value='' ) {
			return true;
		}
	}
}

function create_custom_fields()
{
	global $easy_cf;
	$field_data = array (
		'custom_field_properties' => array (										
			'fields' => array(
				'richtext-example' => array(
					'label' => 'Richtext',
					'type' => 'richtext',
					'validate' => 'richtext',
				),
			),
			'title' => 'Custom Field Properties',
			'context' => 'advanced',
			'pages' => array( 'post' ),
		),
	);

	$easy_cf = new Easy_CF( $field_data );
}
add_action( 'init', 'create_custom_fields' );