web/Zend/View/Helper/Cycle.php
changeset 0 4eba9c11703f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/Zend/View/Helper/Cycle.php	Mon Dec 13 18:29:26 2010 +0100
@@ -0,0 +1,226 @@
+<?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: Cycle.php 20096 2010-01-06 02:05:09Z bkarwin $
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+
+/**
+ * Helper for alternating between set of values
+ *
+ * @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_Cycle implements Iterator
+{
+
+    /**
+     * Default name
+     * @var string
+     */
+    const DEFAULT_NAME = 'default';
+
+    /**
+     * Pointers
+     *
+     * @var array
+     */
+    protected $_pointers = array(self::DEFAULT_NAME =>-1) ;
+
+    /**
+     * Array of values
+     *
+     * @var array
+     */
+    protected $_data = array(self::DEFAULT_NAME=>array());
+
+    /**
+     * Actual name of cycle
+     *
+     * @var string
+     */
+    protected $_name = self::DEFAULT_NAME;
+
+    /**
+     * Add elements to alternate
+     *
+     * @param array $data
+     * @param string $name
+     * @return Zend_View_Helper_Cycle
+     */
+    public function cycle(array $data = array(), $name = self::DEFAULT_NAME)
+    {
+        if(!empty($data))
+           $this->_data[$name] = $data;
+
+        $this->setName($name);
+        return $this;
+    }
+
+    /**
+     * Add elements to alternate
+     *
+     * @param array $data
+     * @param string $name
+     * @return Zend_View_Helper_Cycle
+     */
+    public function assign(Array $data , $name = self::DEFAULT_NAME)
+    {
+        $this->setName($name);
+        $this->_data[$name] = $data;
+        $this->rewind();
+        return $this;
+    }
+
+    /**
+     * Sets actual name of cycle
+     *
+     * @param $name
+     * @return Zend_View_Helper_Cycle
+     */
+    public function setName($name = self::DEFAULT_NAME)
+    {
+       $this->_name = $name;
+
+       if(!isset($this->_data[$this->_name]))
+         $this->_data[$this->_name] = array();
+
+       if(!isset($this->_pointers[$this->_name]))
+         $this->rewind();
+
+       return $this;
+    }
+
+    /**
+     * Gets actual name of cycle
+     *
+     * @param $name
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->_name;
+    }
+
+
+    /**
+     * Return all elements
+     *
+     * @return array
+     */
+    public function getAll()
+    {
+        return $this->_data[$this->_name];
+    }
+
+    /**
+     * Turn helper into string
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return (string) $this->_data[$this->_name][$this->key()];
+    }
+
+    /**
+     * Cast to string
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->toString();
+    }
+
+    /**
+     * Move to next value
+     *
+     * @return Zend_View_Helper_Cycle
+     */
+    public function next()
+    {
+        $count = count($this->_data[$this->_name]);
+        if ($this->_pointers[$this->_name] == ($count - 1))
+            $this->_pointers[$this->_name] = 0;
+        else
+            $this->_pointers[$this->_name] = ++$this->_pointers[$this->_name];
+        return $this;
+    }
+
+    /**
+     * Move to previous value
+     *
+     * @return Zend_View_Helper_Cycle
+     */
+    public function prev()
+    {
+        $count = count($this->_data[$this->_name]);
+        if ($this->_pointers[$this->_name] <= 0)
+            $this->_pointers[$this->_name] = $count - 1;
+        else
+            $this->_pointers[$this->_name] = --$this->_pointers[$this->_name];
+        return $this;
+    }
+
+    /**
+     * Return iteration number
+     *
+     * @return int
+     */
+    public function key()
+    {
+        if ($this->_pointers[$this->_name] < 0)
+            return 0;
+        else
+            return $this->_pointers[$this->_name];
+    }
+
+    /**
+     * Rewind pointer
+     *
+     * @return Zend_View_Helper_Cycle
+     */
+    public function rewind()
+    {
+        $this->_pointers[$this->_name] = -1;
+        return $this;
+    }
+
+    /**
+     * Check if element is valid
+     *
+     * @return bool
+     */
+    public function valid()
+    {
+        return isset($this->_data[$this->_name][$this->key()]);
+    }
+
+    /**
+     * Return  current element
+     *
+     * @return mixed
+     */
+    public function current()
+    {
+        return $this->_data[$this->_name][$this->key()];
+    }
+}