diff -r 000000000000 -r 4eba9c11703f web/Zend/Tag/Cloud.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/Zend/Tag/Cloud.php	Mon Dec 13 18:29:26 2010 +0100
@@ -0,0 +1,410 @@
+<?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_Tag
+ * @subpackage Cloud
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Cloud.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+/**
+ * @see Zend_Tag_Item
+ */
+require_once 'Zend/Tag/Item.php';
+
+/**
+ * @category   Zend
+ * @package    Zend_Tag
+ * @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_Tag_Cloud
+{
+    /**
+     * Decorator for the cloud
+     *
+     * @var Zend_Tag_Cloud_Decorator_Cloud
+     */
+    protected $_cloudDecorator = null;
+
+    /**
+     * Decorator for the tags
+     *
+     * @var Zend_Tag_Cloud_Decorator_Tag
+     */
+    protected $_tagDecorator = null;
+
+    /**
+     * List of all tags
+     *
+     * @var Zend_Tag_ItemList
+     */
+    protected $_tags = null;
+
+    /**
+     * Plugin loader for decorators
+     *
+     * @var Zend_Loader_PluginLoader
+     */
+    protected $_pluginLoader = null;
+
+    /**
+     * Option keys to skip when calling setOptions()
+     *
+     * @var array
+     */
+    protected $_skipOptions = array(
+        'options',
+        'config',
+    );
+
+    /**
+     * Create a new tag cloud with options
+     *
+     * @param mixed $options
+     */
+    public function __construct($options = null)
+    {
+        if ($options instanceof Zend_Config) {
+            $this->setConfig($options);
+        }
+
+        if (is_array($options)) {
+            $this->setOptions($options);
+        }
+    }
+
+    /**
+     * Set options from Zend_Config
+     *
+     * @param  Zend_Config $config
+     * @return Zend_Tag_Cloud
+     */
+    public function setConfig(Zend_Config $config)
+    {
+        $this->setOptions($config->toArray());
+
+        return $this;
+    }
+
+    /**
+     * Set options from array
+     *
+     * @param  array $options Configuration for Zend_Tag_Cloud
+     * @return Zend_Tag_Cloud
+     */
+    public function setOptions(array $options)
+    {
+        if (isset($options['prefixPath'])) {
+            $this->addPrefixPaths($options['prefixPath']);
+            unset($options['prefixPath']);
+        }
+
+        foreach ($options as $key => $value) {
+            if (in_array(strtolower($key), $this->_skipOptions)) {
+                continue;
+            }
+
+            $method = 'set' . ucfirst($key);
+            if (method_exists($this, $method)) {
+                $this->$method($value);
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set the tags for the tag cloud.
+     *
+     * $tags should be an array containing single tags as array. Each tag
+     * array should at least contain the keys 'title' and 'weight'. Optionally
+     * you may supply the key 'url', to which the tag links to. Any additional
+     * parameter in the array is silently ignored and can be used by custom
+     * decorators.
+     *
+     * @param  array $tags
+     * @return Zend_Tag_Cloud
+     */
+    public function setTags(array $tags)
+    {
+        // Validate and cleanup the tags
+        $itemList = $this->getItemList();
+
+        foreach ($tags as $tag) {
+            if ($tag instanceof Zend_Tag_Taggable) {
+                $itemList[] = $tag;
+            } else if (is_array($tag)) {
+                $itemList[] = new Zend_Tag_Item($tag);
+            } else {
+                require_once 'Zend/Tag/Cloud/Exception.php';
+                throw new Zend_Tag_Cloud_Exception('Tag must be an instance of Zend_Tag_Taggable or an array');
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * Append a single tag to the cloud
+     *
+     * @param  Zend_Tag_Taggable|array $tag
+     * @return Zend_Tag_Cloud
+     */
+    public function appendTag($tag)
+    {
+        $tags = $this->getItemList();
+        if ($tag instanceof Zend_Tag_Taggable) {
+            $tags[] = $tag;
+        } else if (is_array($tag)) {
+            $tags[] = new Zend_Tag_Item($tag);
+        } else {
+            require_once 'Zend/Tag/Cloud/Exception.php';
+            throw new Zend_Tag_Cloud_Exception('Tag must be an instance of Zend_Tag_Taggable or an array');
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set the item list
+     *
+     * @param  Zend_Tag_ItemList $itemList
+     * @return Zend_Tag_Cloud
+     */
+    public function setItemList(Zend_Tag_ItemList $itemList)
+    {
+        $this->_tags = $itemList;
+        return $this;
+    }
+
+    /**
+     * Retrieve the item list
+     *
+     * If item list is undefined, creates one.
+     *
+     * @return Zend_Tag_ItemList
+     */
+    public function getItemList()
+    {
+        if (null === $this->_tags) {
+            require_once 'Zend/Tag/ItemList.php';
+            $this->setItemList(new Zend_Tag_ItemList());
+        }
+        return $this->_tags;
+    }
+
+    /**
+     * Set the decorator for the cloud
+     *
+     * @param  mixed $decorator
+     * @return Zend_Tag_Cloud
+     */
+    public function setCloudDecorator($decorator)
+    {
+        $options = null;
+
+        if (is_array($decorator)) {
+            if (isset($decorator['options'])) {
+                $options = $decorator['options'];
+            }
+
+            if (isset($decorator['decorator'])) {
+                $decorator = $decorator['decorator'];
+            }
+        }
+
+        if (is_string($decorator)) {
+            $classname = $this->getPluginLoader()->load($decorator);
+            $decorator = new $classname($options);
+        }
+
+        if (!($decorator instanceof Zend_Tag_Cloud_Decorator_Cloud)) {
+            require_once 'Zend/Tag/Cloud/Exception.php';
+            throw new Zend_Tag_Cloud_Exception('Decorator is no instance of Zend_Tag_Cloud_Decorator_Cloud');
+        }
+
+        $this->_cloudDecorator = $decorator;
+
+        return $this;
+    }
+
+    /**
+     * Get the decorator for the cloud
+     *
+     * @return Zend_Tag_Cloud_Decorator_Cloud
+     */
+    public function getCloudDecorator()
+    {
+        if (null === $this->_cloudDecorator) {
+            $this->setCloudDecorator('htmlCloud');
+        }
+        return $this->_cloudDecorator;
+    }
+
+    /**
+     * Set the decorator for the tags
+     *
+     * @param  mixed $decorator
+     * @return Zend_Tag_Cloud
+     */
+    public function setTagDecorator($decorator)
+    {
+        $options = null;
+
+        if (is_array($decorator)) {
+            if (isset($decorator['options'])) {
+                $options = $decorator['options'];
+            }
+
+            if (isset($decorator['decorator'])) {
+                $decorator = $decorator['decorator'];
+            }
+        }
+
+        if (is_string($decorator)) {
+            $classname = $this->getPluginLoader()->load($decorator);
+            $decorator = new $classname($options);
+        }
+
+        if (!($decorator instanceof Zend_Tag_Cloud_Decorator_Tag)) {
+            require_once 'Zend/Tag/Cloud/Exception.php';
+            throw new Zend_Tag_Cloud_Exception('Decorator is no instance of Zend_Tag_Cloud_Decorator_Tag');
+        }
+
+        $this->_tagDecorator = $decorator;
+
+        return $this;
+    }
+
+    /**
+     * Get the decorator for the tags
+     *
+     * @return Zend_Tag_Cloud_Decorator_Tag
+     */
+    public function getTagDecorator()
+    {
+        if (null === $this->_tagDecorator) {
+            $this->setTagDecorator('htmlTag');
+        }
+        return $this->_tagDecorator;
+    }
+
+    /**
+     * Set plugin loaders for use with decorators
+     *
+     * @param  Zend_Loader_PluginLoader_Interface $loader
+     * @return Zend_Tag_Cloud
+     */
+    public function setPluginLoader(Zend_Loader_PluginLoader_Interface $loader)
+    {
+        $this->_pluginLoader = $loader;
+        return $this;
+    }
+
+    /**
+     * Get the plugin loader for decorators
+     *
+     * @return Zend_Loader_PluginLoader
+     */
+    public function getPluginLoader()
+    {
+        if ($this->_pluginLoader === null) {
+            $prefix     = 'Zend_Tag_Cloud_Decorator_';
+            $pathPrefix = 'Zend/Tag/Cloud/Decorator/';
+
+            require_once 'Zend/Loader/PluginLoader.php';
+            $this->_pluginLoader = new Zend_Loader_PluginLoader(array($prefix => $pathPrefix));
+        }
+
+        return $this->_pluginLoader;
+    }
+
+    /**
+     * Add many prefix paths at once
+     *
+     * @param  array $paths
+     * @return Zend_Tag_Cloud
+     */
+    public function addPrefixPaths(array $paths)
+    {
+        if (isset($paths['prefix']) && isset($paths['path'])) {
+            return $this->addPrefixPath($paths['prefix'], $paths['path']);
+        }
+
+        foreach ($paths as $path) {
+            if (!isset($path['prefix']) || !isset($path['path'])) {
+                continue;
+            }
+
+            $this->addPrefixPath($path['prefix'], $path['path']);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Add prefix path for plugin loader
+     *
+     * @param  string $prefix
+     * @param  string $path
+     * @return Zend_Tag_Cloud
+     */
+    public function addPrefixPath($prefix, $path)
+    {
+        $loader = $this->getPluginLoader();
+        $loader->addPrefixPath($prefix, $path);
+
+        return $this;
+    }
+
+    /**
+     * Render the tag cloud
+     *
+     * @return string
+     */
+    public function render()
+    {
+        $tags = $this->getItemList();
+
+        if (count($tags) === 0) {
+            return '';
+        }
+
+        $tagsResult  = $this->getTagDecorator()->render($tags);
+        $cloudResult = $this->getCloudDecorator()->render($tagsResult);
+
+        return $cloudResult;
+    }
+
+    /**
+     * Render the tag cloud
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        try {
+            $result = $this->render();
+            return $result;
+        } catch (Exception $e) {
+            $message = "Exception caught by tag cloud: " . $e->getMessage()
+                     . "\nStack Trace:\n" . $e->getTraceAsString();
+            trigger_error($message, E_USER_WARNING);
+            return '';
+        }
+    }
+}