public bool RemoveItem(MapItemBase item)
{
var row = GetRow(item);
if (row < 0)
{
return(false);
}
Controls.Remove(item);
return(true);
}
public int RegisterIndex(MapItemBase item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
int index;
registeredIndex.TryGetValue(item.GetType(), out index);
index++;
registeredIndex[item.GetType()] = index;
return(index);
}
public void MoveItemDown(MapItemBase item)
{
var index = GetRow(item);
if (index >= RowCount - 1 || RowCount < 3)
{
return;
}
SuspendLayout();
try
{
var other = GetControlFromPosition(0, index + 1);
SetRow(other, index);
SetRow(item, index + 1);
Controls.SetChildIndex(item, index + 1);
Controls.SetChildIndex(other, index);
}
finally
{
ResumeLayout(true);
}
}
