PhabricatorEventListener.php
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	<?php

	abstract class PhabricatorEventListener extends PhutilEventListener {

	private $application;

	public function setApplication(PhabricatorApplication $application) {
	$this->application = $application;
	return $this;
	}

	public function getApplication() {
	return $this->application;
	}

	public function hasApplicationCapability(
	PhabricatorUser $viewer,
	$capability) {
	return PhabricatorPolicyFilter::hasCapability(
	$viewer,
	$this->getApplication(),
	$capability);
	}

	public function canUseApplication(PhabricatorUser $viewer) {
	return $this->hasApplicationCapability(
	$viewer,
	PhabricatorPolicyCapability::CAN_VIEW);
	}

	protected function addActionMenuItems(PhutilEvent $event, $items) {
	if ($event->getType() !== PhabricatorEventType::TYPE_UI_DIDRENDERACTIONS) {
	throw new Exception('Not an action menu event!');
	}

	if (!$items) {
	return;
	}

	if (!is_array($items)) {
	$items = array($items);
	}

	$event_actions = $event->getValue('actions');
	foreach ($items as $item) {
	$event_actions[] = $item;
	}
	$event->setValue('actions', $event_actions);
	}

	}