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PhabricatorSubscriptionsUIEventListener.php
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Fri, Sep 20, 02:36

PhabricatorSubscriptionsUIEventListener.php
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<?php
final class PhabricatorSubscriptionsUIEventListener
extends PhabricatorEventListener {
public function register() {
$this->listen(PhabricatorEventType::TYPE_UI_DIDRENDERACTIONS);
$this->listen(PhabricatorEventType::TYPE_UI_WILLRENDERPROPERTIES);
}
public function handleEvent(PhutilEvent $event) {
switch ($event->getType()) {
case PhabricatorEventType::TYPE_UI_DIDRENDERACTIONS:
$this->handleActionEvent($event);
break;
case PhabricatorEventType::TYPE_UI_WILLRENDERPROPERTIES:
$this->handlePropertyEvent($event);
break;
}
}
private function handleActionEvent($event) {
$user = $event->getUser();
$user_phid = $user->getPHID();
$object = $event->getValue('object');
if (!$object || !$object->getPHID()) {
// No object, or the object has no PHID yet. No way to subscribe.
return;
}
if (!($object instanceof PhabricatorSubscribableInterface)) {
// This object isn't subscribable.
return;
}
if ($user_phid && $object->isAutomaticallySubscribed($user_phid)) {
$sub_action = id(new PhabricatorActionView())
->setWorkflow(true)
->setDisabled(true)
->setRenderAsForm(true)
->setHref('/subscriptions/add/'.$object->getPHID().'/')
->setName(pht('Automatically Subscribed'))
->setIcon('fa-check-circle lightgreytext');
} else {
$subscribed = false;
if ($user->isLoggedIn()) {
$src_phid = $object->getPHID();
$edge_type = PhabricatorObjectHasSubscriberEdgeType::EDGECONST;
$edges = id(new PhabricatorEdgeQuery())
->withSourcePHIDs(array($src_phid))
->withEdgeTypes(array($edge_type))
->withDestinationPHIDs(array($user_phid))
->execute();
$subscribed = isset($edges[$src_phid][$edge_type][$user_phid]);
}
if ($subscribed) {
$sub_action = id(new PhabricatorActionView())
->setWorkflow(true)
->setRenderAsForm(true)
->setHref('/subscriptions/delete/'.$object->getPHID().'/')
->setName(pht('Unsubscribe'))
->setIcon('fa-minus-circle');
} else {
$sub_action = id(new PhabricatorActionView())
->setWorkflow(true)
->setRenderAsForm(true)
->setHref('/subscriptions/add/'.$object->getPHID().'/')
->setName(pht('Subscribe'))
->setIcon('fa-plus-circle');
}
if (!$user->isLoggedIn()) {
$sub_action->setDisabled(true);
}
}
$actions = $event->getValue('actions');
$actions[] = $sub_action;
$event->setValue('actions', $actions);
}
private function handlePropertyEvent($event) {
$user = $event->getUser();
$object = $event->getValue('object');
if (!$object || !$object->getPHID()) {
// No object, or the object has no PHID yet..
return;
}
if (!($object instanceof PhabricatorSubscribableInterface)) {
// This object isn't subscribable.
return;
}
$subscribers = PhabricatorSubscribersQuery::loadSubscribersForPHID(
$object->getPHID());
if ($subscribers) {
$handles = id(new PhabricatorHandleQuery())
->setViewer($user)
->withPHIDs($subscribers)
->execute();
} else {
$handles = array();
}
$sub_view = id(new SubscriptionListStringBuilder())
->setObjectPHID($object->getPHID())
->setHandles($handles)
->buildPropertyString();
$view = $event->getValue('view');
$view->addProperty(pht('Subscribers'), $sub_view);
}
}

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