1 files changed, 97 insertions, 0 deletions
diff --git a/hugo/libraries/navigation/NodeFactory.class.php b/hugo/libraries/navigation/NodeFactory.class.php
new file mode 100644
index 0000000..7d8106a
--- /dev/null
+++ b/hugo/libraries/navigation/NodeFactory.class.php
@@ -0,0 +1,97 @@
+<?php
+/* vim: set expandtab sw=4 ts=4 sts=4: */
+/**
+ * This class is responsible for creating Node objects
+ *
+ * @package PhpMyAdmin-navigation
+ */
+if (! defined('PHPMYADMIN')) {
+    exit;
+}
+
+require_once 'libraries/navigation/Nodes/Node.class.php';
+
+/**
+ * Node factory - instanciates Node objects or objects derived from the Node class
+ *
+ * @package PhpMyAdmin-Navigation
+ */
+class PMA_NodeFactory
+{
+    /**
+     * @var string $_path A template for generating paths to files
+     *                    that contain various Node classes
+     * @access private
+     */
+    private static $_path = 'libraries/navigation/Nodes/%s.class.php';
+    /**
+     * Sanitizes the name of a Node class
+     *
+     * @param string $class The class name to be sanitized
+     *
+     * @return string
+     */
+    private static function _sanitizeClass($class)
+    {
+        if ($class !== 'Node' && ! preg_match('@^Node_\w+(_\w+)?$@', $class)) {
+            $class = 'Node';
+            trigger_error(
+                sprintf(
+                    /* l10n: The word "Node" must not be translated here */
+                    __('Invalid class name "%1$s", using default of "Node"'),
+                    $class
+                ),
+                E_USER_ERROR
+            );
+        }
+        return self::_checkFile($class);
+    }
+    /**
+     * Checks if a file exists for a given class name
+     * Will return the default class name back if the
+     * file for some subclass is not available
+     *
+     * @param string $class The class name to check
+     *
+     * @return string
+     */
+    private static function _checkFile($class)
+    {
+        $path = sprintf(self::$_path, $class);
+        if (! is_readable($path)) {
+            $class = 'Node';
+            trigger_error(
+                sprintf(
+                    __('Could not include class "%1$s", file "%2$s" not found'),
+                    $class,
+                    'Nodes/' . $class . '.class.php'
+                ),
+                E_USER_ERROR
+            );
+        }
+        return $class;
+    }
+    /**
+     * Instanciates a Node object
+     *
+     * @param string $class    The name of the class to instanciate
+     * @param string $name     An identifier for the new node
+     * @param int    $type     Type of node, may be one of CONTAINER or OBJECT
+     * @param bool   $is_group Whether this object has been created
+     *                         while grouping nodes
+     *
+     * @return string
+     */
+    public static function getInstance(
+        $class = 'Node',
+        $name = 'default',
+        $type = Node::OBJECT,
+        $is_group = false
+    ) {
+        $class = self::_sanitizeClass($class);
+        include_once sprintf(self::$_path, $class);
+        return new $class($name, $type, $is_group);
+    }
+}
+
+?>