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msd2/tracking/piwik/plugins/VisitFrequency/Columns/Metrics/ReturningMetric.php

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+<?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\VisitFrequency\Columns\Metrics;
+
+use Piwik\DataTable\Row;
+use Piwik\Metrics\Formatter;
+use Piwik\Piwik;
+use Piwik\Plugin\ProcessedMetric;
+
+/**
+ * Processed metric for VisitFrequency.get API method which just copies VisitsSummary.get
+ * metrics as differently named metrics.
+ *
+ * This metric must be supplied in order to ensure correct formatting for processed
+ * metrics that are copied from VisitsSummary.get.
+ */
+class ReturningMetric extends ProcessedMetric
+{
+    private static $translations = array(
+        'avg_time_on_site_returning' => 'VisitFrequency_ColumnAverageVisitDurationForReturningVisitors',
+        'nb_actions_per_visit_returning' => 'VisitFrequency_ColumnAvgActionsPerReturningVisit',
+        'bounce_rate_returning' => 'VisitFrequency_ColumnBounceRateForReturningVisits',
+    );
+
+    /**
+     * @var ProcessedMetric
+     */
+    private $wrapped;
+
+    public function __construct(ProcessedMetric $wrapped)
+    {
+        $this->wrapped = $wrapped;
+    }
+
+    public function getName()
+    {
+        return $this->wrapped->getName() . '_returning';
+    }
+
+    public function getTranslatedName()
+    {
+        return Piwik::translate(self::$translations[$this->getName()]);
+    }
+
+    public function format($value, Formatter $formatter)
+    {
+        return $this->wrapped->format($value, $formatter);
+    }
+
+    public function compute(Row $row)
+    {
+        return 0; // (metric is not computed, it is copied from segmented report)
+    }
+
+    public function getDependentMetrics()
+    {
+        return array();
+    }
+}