CalendarSharing::getButtons

public function getButtons(): ?array
{
	$buttons = [];

	if ($this->isScheduled())
	{
		$buttons['completed'] = (
			new Layout\Footer\Button(
				Loc::getMessage('CRM_TIMELINE_ITEM_CALENDAR_SHARING_COMPLETED_BUTTON'),
				Layout\Footer\Button::TYPE_PRIMARY
			)
		)
		->setAction($this->getCompleteAction())->setHideIfReadonly();

		$buttons['notCompleted'] = (
			new Layout\Footer\Button(
				Loc::getMessage('CRM_TIMELINE_ITEM_CALENDAR_SHARING_NOT_COMPLETED_BUTTON'),
				Layout\Footer\Button::TYPE_SECONDARY
			)
		)
		->setAction(
			(new Layout\Action\RunAjaxAction('crm.timeline.calendar.sharing.completeWithStatus'))
				->addActionParamInt('activityId', $this->getActivityId())
				->addActionParamInt('ownerTypeId', $this->getContext()->getEntityTypeId())
				->addActionParamInt('ownerId', $this->getContext()->getEntityId())
				->addActionParamString('status', ActivityHandler::SHARING_STATUS_MEETING_NOT_HELD)
				->setAnimation(Layout\Action\Animation::showLoaderForItem()->setForever()
			)
		);
	}
	else if ($this->getEventId())
	{
		$buttons['openEvent'] = (
			new Layout\Footer\Button(
				Loc::getMessage('CRM_TIMELINE_ITEM_CALENDAR_SHARING_OPEN_MEETING'),
				Layout\Footer\Button::TYPE_SECONDARY
			)
		)
		->setScopeWeb()
		->setAction(
			(new Layout\Action\JsEvent($this->getType() . ':OpenCalendarEvent'))
			->addActionParamInt('eventId', $this->getEventId())
			->addActionParamBoolean('isSharing', $this->isCanceledByClient())
		);
	}

	return $buttons;
}