update Piwik to version 2.16 (fixes #91)

www/analytics/plugins/Goals/Columns/Metrics/GoalSpecific/ItemsCount.php

@@ -0,0 +1,48 @@
+<?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\Goals\Columns\Metrics\GoalSpecific;
+
+use Piwik\DataTable\Row;
+use Piwik\Metrics;
+use Piwik\Piwik;
+use Piwik\Plugins\Goals\Columns\Metrics\GoalSpecificProcessedMetric;
+
+/**
+ * The number of ecommerce order items for conversions of a goal. Returns the 'items'
+ * goal specific metric.
+ */
+class ItemsCount extends GoalSpecificProcessedMetric
+{
+    public function getName()
+    {
+        return $this->getColumnPrefix() . '_items';
+    }
+
+    public function getTranslatedName()
+    {
+        return Piwik::translate('General_PurchasedProducts');
+    }
+
+    public function getDocumentation()
+    {
+        return Piwik::translate('Goals_ColumnPurchasedProductsDocumentation', $this->getGoalNameForDocs());
+    }
+
+    public function getDependentMetrics()
+    {
+        return array('goals');
+    }
+
+    public function compute(Row $row)
+    {
+        $mappingFromNameToIdGoal = Metrics::getMappingFromNameToIdGoal();
+
+        $goalMetrics = $this->getGoalMetrics($row);
+        return (int) $this->getMetric($goalMetrics, 'items', $mappingFromNameToIdGoal);
+    }
+}