--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/Zend/View/Helper/DeclareVars.php	Mon Dec 13 18:29:26 2010 +0100
@@ -0,0 +1,95 @@
+<?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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @version    $Id: DeclareVars.php 20096 2010-01-06 02:05:09Z bkarwin $
+ * @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) 2005-2010 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;
+        }
+    }
+}