/**
* Listen to group ownership changes and update group icon ownership
* This will only move the source file, the actual icons are moved by
* _elgg_filestore_move_icons()
*
* This operation is performed in an event listener to ensure that icons
* are moved when ownership changes outside of the groups/edit action flow.
*
* @todo #4683 proposes that icons are owned by groups and not group owners
* @see _elgg_filestore_move_icons()
*
* @param string $event "update:after"
* @param string $type "group"
* @param ElggGroup $group Group entity
* @return void
*/
function groups_update_event_listener($event, $type, $group)
{
/* @var $group \ElggGroup */
$original_attributes = $group->getOriginalAttributes();
if (empty($original_attributes['owner_guid'])) {
return;
}
$previous_owner_guid = $original_attributes['owner_guid'];
// In addition to standard icons, groups plugin stores a copy of the original upload
$filehandler = new ElggFile();
$filehandler->owner_guid = $previous_owner_guid;
$filehandler->setFilename("groups/{$group->guid}.jpg");
$filehandler->transfer($group->owner_guid);
}