1 files changed, 57 insertions, 0 deletions
diff --git a/lib/models/OpenGraphURLCollection.php b/lib/models/OpenGraphURLCollection.php
new file mode 100644
index 0000000..f575945
--- /dev/null
+++ b/lib/models/OpenGraphURLCollection.php
@@ -0,0 +1,57 @@
+<?php
+/**
+ * Specialized version of SimpleORMapCollection that accepts only
+ * OpenGraphURL objects and provides a method that renders the collection
+ * to html.
+ *
+ * @author  Jan-Hendrik Willms <tleilax+studip@gmail.com>
+ * @license GPL2 or any later version
+ */
+class OpenGraphURLCollection extends SimpleORMapCollection
+{
+    /**
+     * Returns the class name of the object this collection accepts.
+     *
+     * @return String containing the provided class name 'OpenGraphURL'
+     */
+    public function getClassName()
+    {
+        return 'OpenGraphURL';
+    }
+
+    /**
+     * Renders the collection to html. The collection is usually wrapped in
+     * a wrapper element but in some edge cases you might want to choose not
+     * to do so. This is enabled by the only parameter this method accepts.
+     *
+     * Note: I advice you not to exclude the wrapper. The javascript that
+     * handles the collection will fail!
+     *
+     * @param bool $with_wrapper Should the collection be wrapped in a wrapper
+     *                           element (optional, defaults to true)
+     * @return String containing the rendered collection as a html chunk
+     */
+    public function render($with_wrapper = true)
+    {
+        if (!Config::Get()->OPENGRAPH_ENABLE || count($this) === 0) {
+            return '';
+        }
+
+        $rendered_urls = $this->sendMessage('render');
+        $rendered_urls = array_filter($rendered_urls);
+
+        if (count($rendered_urls) === 0) {
+            return '';
+        }
+
+        if ($with_wrapper) {
+            $template = $GLOBALS['template_factory']->open('shared/opengraph-container.php');
+            $template->urls = $rendered_urls;
+            $result = $template->render();
+        } else {
+            $result = implode("\n", $rendered_urls);
+        }
+
+        return $result;
+    }
+}