rem: AlarmListViewItem* item = firstChild(); if (!item)
add: EntryMap::ConstIterator it = entries.begin(); if (it == entries.end())
context: int AlarmListView::itemHeight(){	AlarmListViewItem* item = firstChild();	if (!item)	{		// The list is empty, so create a temporary item to find its height		QListViewItem* item = new QListViewItem(this, QString::null);		int height = item->height();		delete item;		return height;	}	else		return item->height();}