/**
* @param AggregateMessageGroup $agg
* @return mixed
*/
protected static function expandAggregates(AggregateMessageGroup $agg)
{
$flattened = array();
/** @var MessageGroup|AggregateMessageGroup $group */
foreach ($agg->getGroups() as $group) {
if ($group instanceof AggregateMessageGroup) {
$flattened += self::expandAggregates($group);
} else {
$flattened[$group->getId()] = $group;
}
}
return $flattened;
}
/**
* Like getGroupStructure but start from one root which must be an
* AggregateMessageGroup.
*
* @param AggregateMessageGroup $parent
* @throws MWException
* @return array
* @since Public since 2012-11-29
*/
public static function subGroups(AggregateMessageGroup $parent)
{
static $recursionGuard = array();
$pid = $parent->getId();
if (isset($recursionGuard[$pid])) {
$tid = $pid;
$path = array($tid);
do {
$tid = $recursionGuard[$tid];
$path[] = $tid;
// Until we have gone full cycle
} while ($tid !== $pid);
$path = implode(' > ', $path);
throw new MWException("Found cyclic aggregate message groups: {$path}");
}
// We don't care about the ids.
$tree = array_values($parent->getGroups());
usort($tree, array(__CLASS__, 'groupLabelSort'));
// Expand aggregate groups (if any left) after sorting to form a tree
foreach ($tree as $index => $group) {
if ($group instanceof AggregateMessageGroup) {
$sid = $group->getId();
$recursionGuard[$pid] = $sid;
$tree[$index] = self::subGroups($group);
unset($recursionGuard[$pid]);
}
}
// Parent group must be first item in the array
array_unshift($tree, $parent);
return $tree;
}