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<?php
/**
 * Form Class for handling custom fields
 *
 * @package        HDP
 * @subpackage     Form
 */
class HDPForm
{

	/**
	 * The array hold list of custom fields
	 *
	 * @var array
	 */
	protected $fields = array();
	
	/**
	 * Constructor
	 *
	 * @param array $fields
	 */
	public function __construct($fields, $config = array())
	{
		foreach ($fields as $field)
		{
			$class = 'HDPFormField' . ucfirst($field->fieldtype);

			if (class_exists($class))
			{
				$this->fields[$field->name] = new $class($field,
$field->default_values);
			}
			else
			{
				throw new RuntimeException('The field type ' .
$field->fieldType . ' is not supported');
			}
		}
	}

	/**
	 * Get fields of form
	 *
	 * @return array
	 */
	public function getFields()
	{
		return $this->fields;
	}

	/**
	 * Get the field object from name
	 *
	 * @param string $name
	 *
	 * @return HDPFormField
	 */
	public function getField($name)
	{
		return $this->fields[$name];
	}

	/**
	 *
	 * Bind data into form fields
	 *
	 * @param array $data
	 * @param bool  $useDefault
	 *
	 * @return $this
	 */
	public function bind($data, $useDefault = false)
	{
		foreach ($this->fields as $field)
		{
			if (isset($data[$field->name]))
			{
				$field->setValue($data[$field->name]);
			}
			else
			{
				if ($useDefault)
				{
					$field->setValue($field->default_values);
				}
				else
				{
					$field->setValue(null);
				}
			}
		}

		return $this;
	}

	/**
	 * Prepare form fields before being displayed. We need to calculate to see
what fields are shown, what fields are hided
	 *
	 * @param int   $categoryId
	 * @param array $relation
	 */
	public function prepareFormField($categoryId = 0, $relation = array())
	{
		foreach ($this->fields as $field)
		{
			if (($field->categoryId != -1) && !in_array($field->id,
$relation[$categoryId]))
			{
				$field->setVisibility(false);
			}
		}
	}

	/**
	 * Method to get form rendered string
	 *
	 * @return string
	 */
	public function render($tableLess = true)
	{
		ob_start();
		foreach ($this->fields as $field)
		{
			echo $field->getControlGroup($tableLess);
		}

		return ob_get_clean();
	}

	/**
	 * Display form fields and it's value
	 *
	 * @param bool $tableLess
	 *
	 * @return string
	 */
	public function getOutput($tableLess = true)
	{
		ob_start();
		foreach ($this->fields as $field)
		{
			echo $field->getOutput($tableLess);
		}

		return ob_get_clean();
	}
}