src/ItePHP/Component/Form/InputField.php
public function setPattern($pattern){
		$this->setTag('pattern',$pattern);
		if($this->getValidator()){
			$this->getValidator()->setOption('pattern',$pattern);
		}
	}
public function setPattern($pattern){
		$this->setTag('pattern',$pattern);
		if($this->getValidator()){
			$this->getValidator()->setOption('pattern',$pattern);
		}
	}
Set html tag pattern

@param string $pattern - value of tag pattern (regular expression)