1 files changed, 64 insertions, 0 deletions
diff --git a/lib/private/CapabilitiesManager.php b/lib/private/CapabilitiesManager.php
new file mode 100644
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+++ b/lib/private/CapabilitiesManager.php
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+<?php
+/**
+ * @author Roeland Jago Douma <rullzer@owncloud.com>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+namespace OC;
+
+
+use OCP\Capabilities\ICapability;
+
+class CapabilitiesManager {
+
+	/**
+	 * @var \Closure[]
+	 */
+	private $capabilities = array();
+
+	/**
+	 * Get an array of al the capabilities that are registered at this manager
+     *
+	 * @throws \InvalidArgumentException
+	 * @return array
+	 */
+	public function getCapabilities() {
+		$capabilities = [];
+		foreach($this->capabilities as $capability) {
+			$c = $capability();
+			if ($c instanceof ICapability) {
+				$capabilities = array_replace_recursive($capabilities, $c->getCapabilities());
+			} else {
+				throw new \InvalidArgumentException('The given Capability (' . get_class($c) . ') does not implement the ICapability interface');
+			}
+		}
+
+		return $capabilities;
+	}
+
+	/**
+	 * In order to improve lazy loading a closure can be registered which will be called in case
+	 * capabilities are actually requested
+	 *
+	 * $callable has to return an instance of OCP\Capabilities\ICapability
+	 *
+	 * @param \Closure $callable
+	 */
+	public function registerCapability(\Closure $callable) {
+		array_push($this->capabilities, $callable);
+	}
+}