public override bool SetSelection(ISpatialSelection newSel)
{
ISpatialSelection ss = (newSel == null ? new Selection() : newSel);
bool isChanged = base.SetSelection(ss);
if (!isChanged)
{
return(false);
}
ISpatialObject item = ss.Item;
if (m_Main != null)
{
m_Main.SetSelection(item);
}
// If a single item has been selected
if (item != null)
{
if (item is DividerObject)
{
item = (item as DividerObject).Divider.Line;
}
if (item is PointFeature)
{
if (ArePointsDrawn)
{
PointFeature selPoint = (item as PointFeature);
if (m_Inverse != null)
{
m_Inverse.OnSelectPoint(selPoint);
}
if (m_Command != null)
{
m_Command.OnSelectPoint(selPoint);
}
}
}
else if (item is LineFeature)
{
if (m_Command != null)
{
LineFeature selLine = (item as LineFeature);
m_Command.OnSelectLine(selLine);
}
}
// 20100709 -- Not sure about this. If the user wants to point at the
// same point twice in succession, the fact that the point is still
// selected means the 2nd pointing won't get passed down (we tested
// for a change above).
if (m_Command != null)
{
// 20101005 -- Allow highlighting of polygons, since their selection
// should not interfere with command dialogs (and in things like the
// update UI, it can be useful to confirm that topology is ok).
if (!(item is Polygon))
{
ClearSelection();
}
}
}
m_HasSelectionChanged = true;
return(true);
}
