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msd2/tracking/piwik/plugins/RssWidget/RssRenderer.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\RssWidget;
+use Piwik\Cache;
+use Piwik\Http;
+
+/**
+ *
+ */
+class RssRenderer
+{
+    protected $url = null;
+    protected $count = 3;
+    protected $showDescription = false;
+    protected $showContent = false;
+    /**
+     * @var Cache\Lazy
+     */
+    private $cache;
+
+
+    public function __construct($url)
+    {
+        $this->url = $url;
+        $this->cache = Cache::getLazyCache();
+    }
+
+    public function showDescription($bool)
+    {
+        $this->showDescription = $bool;
+    }
+
+    public function showContent($bool)
+    {
+        $this->showContent = $bool;
+    }
+
+    public function setCountPosts($count)
+    {
+        $this->count = $count;
+    }
+
+    public function get()
+    {
+        $cacheId = 'RSS_' . md5($this->url);
+
+        $output = $this->cache->fetch($cacheId);
+
+        if (!$output) {
+            try {
+                $content = Http::fetchRemoteFile($this->url);
+                $rss = simplexml_load_string($content);
+            } catch (\Exception $e) {
+                throw new \Exception("Error while importing feed: {$e->getMessage()}\n");
+            }
+
+            $output = '<div style="padding:10px 15px;"><ul class="rss">';
+            $i = 0;
+
+            $items = array();
+            if (!empty($rss->channel->item)) {
+                $items = $rss->channel->item;
+            }
+            foreach ($items as $post) {
+                $title = $post->title;
+                $date = @strftime("%B %e, %Y", strtotime($post->pubDate));
+                $link = $post->link;
+
+                $output .= '<li><a class="rss-title" title="" target="_blank" rel="noreferrer noopener" href="' . htmlspecialchars($link, ENT_COMPAT, 'UTF-8') . '">' . $title . '</a>' .
+                    '<span class="rss-date">' . $date . '</span>';
+                if ($this->showDescription) {
+                    $output .= '<div class="rss-description">' . $this->addTargetBlankAndNoReferrerToLinks($post->description) . '</div>';
+                }
+
+                if ($this->showContent) {
+                    $output .= '<div class="rss-content">' . $this->addTargetBlankAndNoReferrerToLinks($post->content) . '</div>';
+                }
+                $output .= '</li>';
+
+                if (++$i == $this->count) {
+                    break;
+                }
+            }
+
+            $output .= '</ul></div>';
+            $this->cache->save($cacheId, $output, 60 * 60 * 24);
+        }
+        return $output;
+    }
+
+    private function addTargetBlankAndNoReferrerToLinks($content)
+    {
+        return str_replace('<a ', '<a target="_blank" rel="noreferrer noopener"', $content);
+    }
+}

msd2/tracking/piwik/plugins/RssWidget/RssWidget.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\RssWidget;
+use Piwik\Plugins\RssWidget\Widgets\RssChangelog;
+use Piwik\Plugins\RssWidget\Widgets\RssPiwik;
+use Piwik\SettingsPiwik;
+use Piwik\Widget\WidgetsList;
+
+/**
+ *
+ */
+class RssWidget extends \Piwik\Plugin
+{
+    /**
+     * @see \Piwik\Plugin::registerEvents
+     */
+    public function registerEvents()
+    {
+        return array(
+            'AssetManager.getStylesheetFiles' => 'getStylesheetFiles',
+            'Request.getRenamedModuleAndAction' => 'renameExampleRssWidgetModule',
+            'Widget.filterWidgets' => 'filterWidgets'
+        );
+    }
+
+    public function getStylesheetFiles(&$stylesheets)
+    {
+        $stylesheets[] = "plugins/RssWidget/stylesheets/rss.less";
+    }
+
+    public function renameExampleRssWidgetModule(&$module, &$action)
+    {
+        if ($module == 'ExampleRssWidget') {
+            $module = 'RssWidget';
+        }
+    }
+
+    /**
+     * @param WidgetsList $list
+     */
+    public function filterWidgets($list)
+    {
+        if (!SettingsPiwik::isInternetEnabled()) {
+            $list->remove(RssChangelog::getCategory(), RssChangelog::getName());
+            $list->remove(RssPiwik::getCategory(), RssPiwik::getName());
+        }
+    }
+}

msd2/tracking/piwik/plugins/RssWidget/Widgets/RssChangelog.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\RssWidget\Widgets;
+
+use Piwik\Piwik;
+use Piwik\Widget\WidgetConfig;
+use Piwik\Plugins\RssWidget\RssRenderer;
+
+class RssChangelog extends \Piwik\Widget\Widget
+{
+    public static function getCategory()
+    {
+        return 'About Matomo';
+    }
+
+    public static function getName()
+    {
+        return 'Matomo Changelog';
+    }
+
+    public static function configure(WidgetConfig $config)
+    {
+        $config->setCategoryId(self::getCategory());
+        $config->setName(self::getName());
+    }
+
+    private function getFeed($URL) {
+        $rss = new RssRenderer($URL);
+        $rss->setCountPosts(1);
+        $rss->showDescription(true);
+        $rss->showContent(false);
+        return $rss->get();
+    }
+
+    public function render()
+    {   
+        try {
+            return $this->getFeed('https://matomo.org/changelog/feed');
+        } 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>';
+    }
+}

msd2/tracking/piwik/plugins/RssWidget/Widgets/RssPiwik.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\RssWidget\Widgets;
+
+use Piwik\Piwik;
+use Piwik\Widget\WidgetConfig;
+use Piwik\Plugins\RssWidget\RssRenderer;
+
+class RssPiwik extends \Piwik\Widget\Widget
+{
+    public static function getCategory()
+    {
+        return 'About Matomo';
+    }
+
+    public static function getName()
+    {
+        return 'Matomo.org Blog';
+    }
+
+    public static function configure(WidgetConfig $config)
+    {
+        $config->setCategoryId(self::getCategory());
+        $config->setName(self::getName());
+    }
+
+    private function getFeed($URL){
+        $rss = new RssRenderer($URL);
+        $rss->showDescription(true);
+        return $rss->get();
+    }
+
+    public function render()
+    {
+        try {
+            return $this->getFeed('https://matomo.org/feed/');
+        } 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>';
+    }
+}

msd2/tracking/piwik/plugins/RssWidget/plugin.json

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+{
+    "name": "RssWidget",
+    "description": "Matomo Platform showcase: how to create a new widget that displays a user submitted RSS feed.",
+    "version": "1.0",
+    "keywords": ["example", "feed", "widget"],
+    "homepage": "https://matomo.org",
+    "license": "GPL v3+",
+    "authors": [
+        {
+            "name": "Matomo",
+            "email": "hello@matomo.org",
+            "homepage": "https://matomo.org"
+        }
+    ]
+}

msd2/tracking/piwik/plugins/RssWidget/stylesheets/rss.less

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+.rss ul {
+    list-style: none outside none;
+    padding: 0;
+}
+
+.rss li {
+    line-height: 140%;
+    margin: 0.5em 0 1em;
+}
+
+.rss-title, .rss-date {
+    float: left;
+    font-size: 14px;
+    line-height: 140%;
+}
+
+.rss-title {
+    color: #2583AD;
+    margin: 0 0.5em 0.2em 0;
+    font-weight: bold;
+}
+
+.rss-date {
+    color: #999999;
+    margin: 0;
+}
+
+.rss-content, .rss-description {
+    clear: both;
+    line-height: 1.5em;
+    font-size: 13px;
+    color: #333333;
+    .screen-reader-text {
+        display: none;
+    }
+}
+
+/* hide changing blog post title and date in UI test */
+.uiTest .rss-title, .uiTest .rss-date {
+    visibility:hidden;
+
+}