public override System.Collections.IEnumerable GetChildren(TreePath treePath)
{
if (treePath.IsEmpty())
{
foreach (var layer in _map.GetLayersWithoutGroups())
{
yield return(new LayerItem(layer));
}
foreach (var group in _map.MapLayerGroup)
{
if (string.IsNullOrEmpty(group.Group))
{
yield return(new GroupItem(group));
}
}
}
else
{
var gitem = treePath.LastNode as GroupItem;
if (gitem != null)
{
var group = gitem.Tag;
foreach (var l in _map.GetLayersForGroup(group.Name))
{
yield return(new LayerItem(l));
}
foreach (var g in _map.MapLayerGroup)
{
if (g.Group == group.Name)
{
yield return(new GroupItem(g));
}
}
}
else
{
yield break;
}
}
}
