private void ReOrder()
{
var index = 1;
if (this._itens.HaveAny())
{
var current_index = this._current?.Index ?? 0;
this._itens.OrderBy(o => o.Index).ToList().ForEach(i =>
{
i.Index = index;
index++;
});
if (current_index > this._itens.Count - 1)
{
this._current = this._itens[this._itens.Count - 1];
}
else
{
this._current = this._itens[current_index];
}
}
}
public void First()
{
if (this._itens.HaveAny())
{
var index = 1;
var new_current = this._itens.Where(i => i.Index.Equals(index));
if (new_current.HaveAny())
{
this._current = new_current.First();
}
}
else
{
this._current = null;
}
}
public void Add(string key)
{
var exists = this._itens.Where(i => i.Key.Equals(key)).HaveAny();
if (!exists)
{
this._itens.Add(new RoundRobinDetail
{
Index = this._itens.Count() + 1,
Key = key
});
}
if (this._itens.Count.Equals(1))
{
this._current = this._itens.First();
}
}
public void Previous()
{
if (this._itens.HaveAny())
{
var index = 0;
if (this._current.Index.Equals(1))
{
index = this._itens.Max(i => i.Index);
}
var new_current = this._itens.Where(i => i.Index.Equals(index - 1));
if (new_current.HaveAny())
{
this._current = new_current.First();
}
}
else
{
this._current = null;
}
}