Дозаливка

pma12111211/libraries/plugins/PluginManager.class.php

@@ -0,0 +1,132 @@
+<?php
+/* vim: set expandtab sw=4 ts=4 sts=4: */
+/**
+ * The PluginManager class is used alongside PluginObserver to implement
+ * the Observer Design Pattern.
+ *
+ * @package PhpMyAdmin
+ */
+if (! defined('PHPMYADMIN')) {
+    exit;
+}
+
+/**
+ * This class implements the SplSubject interface
+ *
+ * @todo    implement all methods
+ * @package PhpMyAdmin
+ * @link    http://php.net/manual/en/class.splsubject.php
+ *
+ */
+class PluginManager implements SplSubject
+{
+    /**
+     * Contains a list with all the plugins that attach to it
+     *
+     * @var SplObjectStorage
+     */
+    private $_storage;
+
+    /**
+     * Contains information about the current plugin state
+     *
+     * @var string
+     */
+    private $_status;
+
+    /**
+     * Constructor
+     * Initializes $_storage with an empty SplObjectStorage
+     */
+    public function __construct()
+    {
+        $this->_storage = new SplObjectStorage();
+    }
+
+    /**
+     * Attaches an SplObserver so that it can be notified of updates
+     *
+     * @param SplObserver $observer The SplObserver to attach
+     *
+     * @return void
+     */
+    function attach (SplObserver $observer )
+    {
+        $this->_storage->attach($observer);
+    }
+
+    /**
+     * Detaches an observer from the subject to no longer notify it of updates
+     *
+     * @param SplObserver $observer The SplObserver to detach
+     *
+     * @return void
+     */
+    function detach (SplObserver $observer)
+    {
+         $this->_storage->detach($observer);
+    }
+
+    /**
+     * It is called after setStatus() was run by a certain plugin, and has
+     * the role of sending a notification to all of the plugins in $_storage,
+     * by calling the update() method for each of them.
+     *
+     * @todo implement
+     * @return void
+     */
+    function notify ()
+    {
+    }
+
+    /* ~~~~~~~~~~~~~~~~~~~~ Getters and Setters ~~~~~~~~~~~~~~~~~~~~ */
+
+    /**
+     * Gets the list with all the plugins that attach to it
+     *
+     * @return SplObjectStorage
+     */
+    public function getStorage()
+    {
+        return $this->_storage;
+    }
+
+    /**
+     * Setter for $_storage
+     *
+     * @param SplObjectStorage $_storage the list with all the plugins that
+     *                                  attach to it
+     *
+     * @return void
+     */
+    public function setStorage($_storage)
+    {
+        $this->_storage = $_storage;
+    }
+
+    /**
+     * Gets the information about the current plugin state
+     * It is called by all the plugins in $_storage in their update() method
+     *
+     * @return string
+     */
+    public function getStatus()
+    {
+        return $this->_status;
+    }
+
+    /**
+     * Setter for $_status
+     * If a plugin changes its status, this has to be remembered in order to
+     * notify the rest of the plugins that they should update
+     *
+     * @param string $_status contains information about the current plugin state
+     *
+     * @return void
+     */
+    public function setStatus($_status)
+    {
+        $this->_status = $_status;
+    }
+}
+?>