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<?php
/**
 * @package     Joomla.Platform
 * @subpackage  Form
 *
 * @copyright   (C) 2009 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE
 */

defined('JPATH_PLATFORM') or die;

/**
 * Form Field class for the Joomla Platform.
 * Supports a multi line area for entry of plain text
 *
 * @link   http://www.w3.org/TR/html-markup/textarea.html#textarea
 * @since  1.7.0
 */
class JFormFieldTextarea extends JFormField
{
	/**
	 * The form field type.
	 *
	 * @var    string
	 * @since  1.7.0
	 */
	protected $type = 'Textarea';

	/**
	 * The number of rows in textarea.
	 *
	 * @var    mixed
	 * @since  3.2
	 */
	protected $rows;

	/**
	 * The number of columns in textarea.
	 *
	 * @var    mixed
	 * @since  3.2
	 */
	protected $columns;

	/**
	 * The maximum number of characters in textarea.
	 *
	 * @var    mixed
	 * @since  3.4
	 */
	protected $maxlength;

	/**
	 * Name of the layout being used to render the field
	 *
	 * @var    string
	 * @since  3.7
	 */
	protected $layout = 'joomla.form.field.textarea';

	/**
	 * Method to get certain otherwise inaccessible properties from the form field object.
	 *
	 * @param   string  $name  The property name for which to get the value.
	 *
	 * @return  mixed  The property value or null.
	 *
	 * @since   3.2
	 */
	public function __get($name)
	{
		switch ($name)
		{
			case 'rows':
			case 'columns':
			case 'maxlength':
				return $this->$name;
		}

		return parent::__get($name);
	}

	/**
	 * Method to set certain otherwise inaccessible properties of the form field object.
	 *
	 * @param   string  $name   The property name for which to set the value.
	 * @param   mixed   $value  The value of the property.
	 *
	 * @return  void
	 *
	 * @since   3.2
	 */
	public function __set($name, $value)
	{
		switch ($name)
		{
			case 'rows':
			case 'columns':
			case 'maxlength':
				$this->$name = (int) $value;
				break;

			default:
				parent::__set($name, $value);
		}
	}

	/**
	 * Method to attach a JForm object to the field.
	 *
	 * @param   SimpleXMLElement  $element  The SimpleXMLElement object representing the `<field>` tag for the form field object.
	 * @param   mixed             $value    The form field value to validate.
	 * @param   string            $group    The field name group control value. This acts as an array container for the field.
	 *                                      For example if the field has name="foo" and the group value is set to "bar" then the
	 *                                      full field name would end up being "bar[foo]".
	 *
	 * @return  boolean  True on success.
	 *
	 * @see     JFormField::setup()
	 * @since   3.2
	 */
	public function setup(SimpleXMLElement $element, $value, $group = null)
	{
		$return = parent::setup($element, $value, $group);

		if ($return)
		{
			$this->rows      = isset($this->element['rows']) ? (int) $this->element['rows'] : false;
			$this->columns   = isset($this->element['cols']) ? (int) $this->element['cols'] : false;
			$this->maxlength = isset($this->element['maxlength']) ? (int) $this->element['maxlength'] : false;
		}

		return $return;
	}

	/**
	 * Method to get the textarea field input markup.
	 * Use the rows and columns attributes to specify the dimensions of the area.
	 *
	 * @return  string  The field input markup.
	 *
	 * @since   1.7.0
	 */
	protected function getInput()
	{
		// Trim the trailing line in the layout file
		return rtrim($this->getRenderer($this->layout)->render($this->getLayoutData()), PHP_EOL);
	}

	/**
	 * Method to get the data to be passed to the layout for rendering.
	 *
	 * @return  array
	 *
	 * @since 3.7
	 */
	protected function getLayoutData()
	{
		$data = parent::getLayoutData();

		// Initialize some field attributes.
		$columns      = $this->columns ? ' cols="' . $this->columns . '"' : '';
		$rows         = $this->rows ? ' rows="' . $this->rows . '"' : '';
		$maxlength    = $this->maxlength ? ' maxlength="' . $this->maxlength . '"' : '';

		$extraData = array(
			'maxlength'    => $maxlength,
			'rows'         => $rows,
			'columns'      => $columns
		);

		return array_merge($data, $extraData);
	}
}