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gyro/core/behaviour/base/commanddelegate.cls.php

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<?php
require_once dirname(__FILE__) . '/commandbase.cls.php';
 
/**
 * The command delegate delegates all request to another command
 * 
 * Use the command to wrap another
 *  
 * @author Gerd Riesselmann
 * @ingroup Behaviour
 */
class CommandDelegate implements ICommand {
        /**
         * Commadn to delegate to
         *
         * @var ICommand
         */
        protected $delegate;

        public function __construct($delegate) {
                $this->delegate = $delegate;
        }

        protected function check_delegate() {
                if (empty($this->delegate)) {
                        throw new Exception('No delegate set for delegation command ' . get_class($this));
                }
        }
        
        /**
         * Returns title of command.
         */
        public function get_name() {
                $this->check_delegate();
                return $this->delegate->get_name();
        }
        
        /**
         * Returns a description of this command
         */
        public function get_description() {
                $this->check_delegate();
                return $this->delegate->get_description();
        } 
                
        /**
         * Returns the object this actionworks upon
         *
         * @return mixed
         */
        public function get_instance() {
                $this->check_delegate();
                return $this->delegate->get_instance();
        }

        /**
         * Returns params
         *
         * @return mixed
         */
        public function get_params() {
                $this->check_delegate();
                return $this->delegate->get_params();
        }       

        /**
         * Returns success message for this command
         */
        public function get_success_message() {
                $this->check_delegate();
                return $this->delegate->get_success_message();
        }               

        /**
         * Return result of command
         * 
         * @return mixed
         */
        public function get_result() {
                $this->check_delegate();
                return $this->delegate->get_result();
        }               

        /**
         * Returns a name that has parameters build in  
         *
         * @return string
         */
        public function get_name_serialized() {
                $this->check_delegate();
                return $this->delegate->get_name_serialized();
        }       
        
        /**
         * Make this command available for text processing systems (that is: the HTML code)
         */
        public function serialize() {
                $this->check_delegate();
                return $this->delegate->serialize();
        }       
        
        public function can_execute($user) {
                $this->check_delegate();
                return $this->delegate->can_execute($user);
        }
        
        public function execute() {
                $this->check_delegate();
                return $this->delegate->execute();
        }
        
        public function undo() {
                $this->check_delegate();
                $this->delegate->undo();
        }       
}

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