/**
* Process provided command object
*
* @param Mage_Backend_Model_Menu_Builder_CommandAbstract $command
* @return Mage_Backend_Model_Menu_Builder
*/
public function processCommand(Mage_Backend_Model_Menu_Builder_CommandAbstract $command)
{
if (!isset($this->_commands[$command->getId()])) {
$this->_commands[$command->getId()] = $command;
} else {
$this->_commands[$command->getId()]->chain($command);
}
return $this;
}
/**
* Add command as last in the list of callbacks
*
* @param Mage_Backend_Model_Menu_Builder_CommandAbstract $command
* @return Mage_Backend_Model_Menu_Builder_CommandAbstract
* @throws InvalidArgumentException
*/
public function chain(Mage_Backend_Model_Menu_Builder_CommandAbstract $command)
{
if ($command instanceof Mage_Backend_Model_Menu_Builder_Command_Add) {
throw new InvalidArgumentException("Two 'add' commands cannot have equal id (" . $command->getId() . ")");
}
return parent::chain($command);
}
