<?php

namespace b8\Form;
use b8\Form\Element,
	b8\Form\Input,
	b8\View;

class FieldSet extends Element
{
	protected $_children    = array();

	public function getValues()
	{
		$rtn = array();

		foreach($this->_children as $field)
		{
			if($field instanceof FieldSet)
			{
				$fieldName = $field->getName();

				if(empty($fieldName))
				{
					$rtn = array_merge($rtn, $field->getValues());
				}
				else
				{
					$rtn[$fieldName] = $field->getValues();
				}
			}
			elseif($field instanceof Input)
			{
				if($field->getName())
				{
					$rtn[$field->getName()] = $field->getValue();
				}
			}
		}

		return $rtn;
	}

	public function setValues(array $values)
	{
		foreach($this->_children as $field)
		{
			if($field instanceof FieldSet)
			{
				$fieldName = $field->getName();

				if(empty($fieldName) || !isset($values[$fieldName]))
				{
					$field->setValues($values);
				}
				else
				{
					$field->setValues($values[$fieldName]);
				}
			}
			elseif($field instanceof Input)
			{
				$fieldName = $field->getName();

				if(isset($values[$fieldName]))
				{
					$field->setValue($values[$fieldName]);
				}
			}
		}
	}

	public function addField(Element $field)
	{
		$this->_children[$field->getName()] = $field;
		$field->setParent($this);
	}

	public function validate()
	{
		$rtn = true;

		foreach($this->_children as $child)
		{
			if(!$child->validate())
			{
				$rtn = false;
			}
		}

		return $rtn;
	}

	protected function _onPreRender(View &$view)
	{
		$rendered = array();

		foreach($this->_children as $child)
		{
			$rendered[] = $child->render();
		}

		$view->children = $rendered;
	}

    public function getChildren()
    {
        return $this->_children;
    }

    public function getChild($fieldName)
    {
        return $this->_children[$fieldName];
    }
}