public override void OnRemovingRange(RangeRegionCancelEventArgs e)
{
base.OnRemovingRange(e);
RangeRegionChangingEventArgs regionChanging = new RangeRegionChangingEventArgs(e.RangeRegion, new SourceGrid.RangeRegion(), new SourceGrid.RangeRegion());
PositionCollection exploredPos = new PositionCollection();
do
{
regionChanging.RegionToExclude.Clear();
regionChanging.RegionToInclude.Clear();
PositionCollection positions = e.RangeRegion.GetCellsPositions();
for (int i = 0; i < positions.Count; i++)
{
if (exploredPos.Contains(positions[i]) == false)
{
CellContext cellContext = new CellContext(Grid, positions[i]);
Grid.Controller.OnSelectionRemoving(cellContext, regionChanging);
exploredPos.Add(positions[i]);
}
}
regionChanging.CurrentRegion.Add(regionChanging.RegionToInclude);
regionChanging.CurrentRegion.Remove(regionChanging.RegionToExclude);
} while (!regionChanging.RegionToExclude.IsEmpty() || !regionChanging.RegionToInclude.IsEmpty());
}
/// <summary>
/// Returns the union of all the selected range as Position collection
/// </summary>
/// <returns></returns>
public PositionCollection GetCellsPositions()
{
if (m_PositionListCache == null)
{
m_PositionListCache = new PositionCollection();
for (int i = 0; i < m_RangeList.Count; i++)
{
PositionCollection l_tmp = m_RangeList[i].GetCellsPositions();
for (int j = 0; j < l_tmp.Count; j++)
{
if (m_PositionListCache.Contains(l_tmp[j]) == false)
{
m_PositionListCache.Add(l_tmp[j]);
}
}
}
}
return(m_PositionListCache);
}