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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Julius Härtl <jus@bitgrid.net>
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @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\AppFramework\QueryException;
use OCP\Capabilities\ICapability;
use OCP\Capabilities\IPublicCapability;
use OCP\ILogger;
class CapabilitiesManager {
/** @var \Closure[] */
private $capabilities = array();
/** @var ILogger */
private $logger;
public function __construct(ILogger $logger) {
$this->logger = $logger;
}
/**
* Get an array of al the capabilities that are registered at this manager
*
* @param bool $public get public capabilities only
* @throws \InvalidArgumentException
* @return array
*/
public function getCapabilities($public = false) {
$capabilities = [];
foreach($this->capabilities as $capability) {
try {
$c = $capability();
} catch (QueryException $e) {
$this->logger->error('CapabilitiesManager: {message}', ['app' => 'core', 'message' => $e->getMessage()]);
continue;
}
if ($c instanceof ICapability) {
if(!$public || $c instanceof IPublicCapability) {
$capabilities = array_replace_recursive($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);
}
}
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