1 files changed, 169 insertions, 0 deletions
diff --git a/library/Icinga/User/Preferences.php b/library/Icinga/User/Preferences.php
new file mode 100644
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+++ b/library/Icinga/User/Preferences.php
@@ -0,0 +1,169 @@
+<?php
+/* Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\User;
+
+use Countable;
+
+/**
+ * User preferences container
+ *
+ * Usage example:
+ * <code>
+ * <?php
+ *
+ * use Icinga\User\Preferences;
+ *
+ * $preferences = new Preferences(); // Start with empty preferences
+ *
+ * $preferences = new Preferences(array('aPreference' => 'value')); // Start with initial preferences
+ *
+ * $preferences->aNewPreference = 'value'; // Set a preference
+ *
+ * unset($preferences->aPreference); // Unset a preference
+ *
+ * // Retrieve a preference and return a default value if the preference does not exist
+ * $anotherPreference = $preferences->get('anotherPreference', 'defaultValue');
+ */
+class Preferences implements Countable
+{
+    /**
+     * Preferences key-value array
+     *
+     * @var array
+     */
+    protected $preferences = array();
+
+    /**
+     * Constructor
+     *
+     * @param   array   $preferences    Preferences key-value array
+     */
+    public function __construct(array $preferences = array())
+    {
+        $this->preferences = $preferences;
+    }
+
+    /**
+     * Count all preferences
+     *
+     * @return  int     The number of preferences
+     */
+    public function count(): int
+    {
+        return count($this->preferences);
+    }
+
+    /**
+     * Determine whether a preference exists
+     *
+     * @param   string      $name
+     *
+     * @return  bool
+     */
+    public function has($name)
+    {
+        return array_key_exists($name, $this->preferences);
+    }
+
+    /**
+     * Write data to a preference
+     *
+     * @param   string      $name
+     * @param   mixed       $value
+     */
+    public function __set($name, $value)
+    {
+        $this->preferences[$name] = $value;
+    }
+
+    /**
+     * Retrieve a preference section
+     *
+     * @param   string      $name
+     *
+     * @return  array|null
+     */
+    public function get($name)
+    {
+        if (array_key_exists($name, $this->preferences)) {
+            return $this->preferences[$name];
+        }
+
+        return null;
+    }
+
+    /**
+     * Retrieve a value from a specific section
+     *
+     * @param string    $section
+     * @param string    $name
+     * @param null      $default
+     *
+     * @return array|null
+     */
+    public function getValue($section, $name, $default = null)
+    {
+        if (array_key_exists($section, $this->preferences)
+            && array_key_exists($name, $this->preferences[$section])
+        ) {
+            return $this->preferences[$section][$name];
+        }
+
+        return $default;
+    }
+
+    /**
+     * Magic method so that $obj->value will work.
+     *
+     * @param   string      $name
+     *
+     * @return  mixed
+     */
+    public function __get($name)
+    {
+        return $this->get($name);
+    }
+
+    /**
+     * Remove a given preference
+     *
+     * @param   string      $name   Preference name
+     */
+    public function remove($name)
+    {
+        unset($this->preferences[$name]);
+    }
+
+    /**
+     * Determine if a preference is set and is not NULL
+     *
+     * @param   string      $name   Preference name
+     *
+     * @return  bool
+     */
+    public function __isset($name)
+    {
+        return isset($this->preferences[$name]);
+    }
+
+    /**
+     * Unset a given preference
+     *
+     * @param   string      $name   Preference name
+     */
+    public function __unset($name)
+    {
+        $this->remove($name);
+    }
+
+    /**
+     * Get preferences as array
+     *
+     * @return  array
+     */
+    public function toArray()
+    {
+        return $this->preferences;
+    }
+}