Questtype ?Textinput?: add support for field sizes (Issue #252) and general improvements

www/analytics/core/Registry.php

@@ -0,0 +1,57 @@
+<?php
+/**
+ * Piwik - Open source web analytics
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+namespace Piwik;
+
+/**
+ * Registry class.
+ *
+ * @method static \Piwik\Registry getInstance()
+ */
+class Registry extends Singleton
+{
+    private $data;
+
+    protected function __construct()
+    {
+        $this->data = array();
+    }
+
+    public static function isRegistered($key)
+    {
+        return self::getInstance()->hasKey($key);
+    }
+
+    public static function get($key)
+    {
+        return self::getInstance()->getKey($key);
+    }
+
+    public static function set($key, $value)
+    {
+        self::getInstance()->setKey($key, $value);
+    }
+
+    public function setKey($key, $value)
+    {
+        $this->data[$key] = $value;
+    }
+
+    public function getKey($key)
+    {
+        if (!$this->hasKey($key)) {
+            throw new \Exception(sprintf("Key '%s' doesn't exist in Registry", $key));
+        }
+        return $this->data[$key];
+    }
+
+    public function hasKey($key)
+    {
+        return array_key_exists($key, $this->data);
+    }
+}