update Piwik to version 2.16 (fixes #91)

www/analytics/plugins/ExampleRssWidget/Widgets.php

@@ -0,0 +1,64 @@
+<?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\ExampleRssWidget;
+
+use Piwik\Common;
+use Piwik\Piwik;
+
+class Widgets extends \Piwik\Plugin\Widgets
+{
+    protected $category = 'About Piwik';
+
+    protected function init()
+    {
+        $this->addWidget('Piwik.org Blog', 'rssPiwik');
+        $this->addWidget('Piwik Changelog', 'rssChangelog');
+    }
+
+    public function rssPiwik()
+    {
+        try {
+            $rss = new RssRenderer('http://feeds.feedburner.com/Piwik');
+            $rss->showDescription(true);
+
+            return $rss->get();
+
+        } catch (\Exception $e) {
+
+            return $this->error($e);
+        }
+    }
+
+    public function rssChangelog()
+    {
+        try {
+            $rss = new RssRenderer('http://feeds.feedburner.com/PiwikReleases');
+            $rss->setCountPosts(1);
+            $rss->showDescription(true);
+            $rss->showContent(false);
+
+            return $rss->get();
+
+        } catch (\Exception $e) {
+
+            return $this->error($e);
+        }
+    }
+
+    /**
+     * @param \Exception $e
+     * @return string
+     */
+    private function error($e)
+    {
+        return '<div class="pk-emptyDataTable">'
+             . Piwik::translate('General_ErrorRequest', array('', ''))
+             . ' - ' . $e->getMessage() . '</div>';
+    }
+}