RegisterSubscriptionMenuItemsHandler.php

Go to the documentation of this file.

<?php

namespace Elgg\Notifications;

use Elgg\Menu\MenuItems;

class RegisterSubscriptionMenuItemsHandler {
    
    public function __invoke(\Elgg\Event $event) {
        
        $result = $event->getValue();
        $entity = $event->getEntityParam();
        if (!$result instanceof MenuItems || !$entity instanceof \ElggEntity) {
            return;
        }
        
        if (!elgg_is_logged_in()) {
            return;
        }
        
        $link_classes = [];
        if ($event->getParam('name') === 'title') {
            $link_classes = [
                'elgg-button',
                'elgg-button-action',
            ];
        }
        
        $has_subscriptions = $entity->hasSubscriptions();

        // subscribe
        $subscribe_options = [
            'name' => 'entity_subscribe',
            'icon' => 'bell',
            'text' => elgg_echo('entity:subscribe'),
            'href' => false,
            'item_class' => $has_subscriptions ? 'hidden' : '',
            'link_class' => $link_classes,
        ];
        
        // check if it makes sense to enable the subscribe button
        $has_preferences = !empty(array_keys(array_filter(elgg_get_logged_in_user_entity()->getNotificationSettings())));
        if ($has_preferences) {
            $subscribe_options['href'] = elgg_generate_action_url('entity/subscribe', [
                'guid' => $entity->guid,
            ]);
            $subscribe_options['data-toggle'] = 'entity_mute';
        } else {
            $subscribe_options['link_class'][] = 'elgg-state-disabled';
            $subscribe_options['title'] = elgg_echo('entity:subscribe:disabled');
        }
        
        $result[] = \ElggMenuItem::factory($subscribe_options);
        
        // mute
        $result[] = \ElggMenuItem::factory([
            'name' => 'entity_mute',
            'icon' => 'bell-slash',
            'text' => elgg_echo('entity:mute'),
            'href' => elgg_generate_action_url('entity/mute', [
                'guid' => $entity->guid,
            ]),
            'item_class' => $has_subscriptions ? '' : 'hidden',
            'link_class' => $link_classes,
            'data-toggle' => 'entity_subscribe',
        ]);
        
        return $result;
    }
}