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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_View
* @subpackage Helper
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @version $Id: DeclareVars.php 16222 2009-06-21 19:55:20Z thomas $
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/** Zend_View_Helper_Abstract.php */
require_once 'Zend/View/Helper/Abstract.php';
/**
* Helper for declaring default values of template variables
*
* @package Zend_View
* @subpackage Helper
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_View_Helper_DeclareVars extends Zend_View_Helper_Abstract
{
/**
* The view object that created this helper object.
* @var Zend_View
*/
public $view;
/**
* Declare template vars to set default values and avoid notices when using strictVars
*
* Primarily for use when using {@link Zend_View_Abstract::strictVars() Zend_View strictVars()},
* this helper can be used to declare template variables that may or may
* not already be set in the view object, as well as to set default values.
* Arrays passed as arguments to the method will be used to set default
* values; otherwise, if the variable does not exist, it is set to an empty
* string.
*
* Usage:
* <code>
* $this->declareVars(
* 'varName1',
* 'varName2',
* array('varName3' => 'defaultValue',
* 'varName4' => array()
* )
* );
* </code>
*
* @param string|array variable number of arguments, all string names of variables to test
* @return void
*/
public function declareVars()
{
$args = func_get_args();
foreach($args as $key) {
if (is_array($key)) {
foreach ($key as $name => $value) {
$this->_declareVar($name, $value);
}
} else if (!isset($view->$key)) {
$this->_declareVar($key);
}
}
}
/**
* Set a view variable
*
* Checks to see if a $key is set in the view object; if not, sets it to $value.
*
* @param string $key
* @param string $value Defaults to an empty string
* @return void
*/
protected function _declareVar($key, $value = '')
{
if (!isset($this->view->$key)) {
$this->view->$key = $value;
}
}
}
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