update Piwik to version 2.16 (fixes #91)

www/analytics/plugins/Actions/Columns/TimeSpentRefAction.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+namespace Piwik\Plugins\Actions\Columns;
+
+use Piwik\Plugin\Dimension\ActionDimension;
+use Piwik\Tracker\Action;
+use Piwik\Tracker\Request;
+use Piwik\Tracker\Visitor;
+
+class TimeSpentRefAction extends ActionDimension
+{
+    protected $columnName = 'time_spent_ref_action';
+    protected $columnType = 'INTEGER(10) UNSIGNED NOT NULL';
+
+    public function onNewAction(Request $request, Visitor $visitor, Action $action)
+    {
+        $timeSpent = $visitor->getVisitorColumn('time_spent_ref_action');
+
+        if (empty($timeSpent)) {
+            return 0;
+        }
+
+        return $timeSpent;
+    }
+}