1 -- Created on: 1992-11-18
2 -- Created by: Christian CAILLET
3 -- Copyright (c) 1992-1999 Matra Datavision
4 -- Copyright (c) 1999-2014 OPEN CASCADE SAS
6 -- This file is part of Open CASCADE Technology software library.
8 -- This library is free software; you can redistribute it and/or modify it under
9 -- the terms of the GNU Lesser General Public License version 2.1 as published
10 -- by the Free Software Foundation, with special exception defined in the file
11 -- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 -- distribution for complete text of the license and disclaimer of any warranty.
14 -- Alternatively, this file may be used under the terms of Open CASCADE
15 -- commercial license or contractual agreement.
17 class SelectDiff from IFSelect inherits SelectControl
19 ---Purpose : A SelectDiff keeps the entities from a Selection, the Main
20 -- Input, which are not listed by the Second Input
22 uses AsciiString from TCollection, EntityIterator, Graph
26 Create returns mutable SelectDiff;
27 ---Purpose : Creates an empty SelectDiff
30 RootResult (me; G : Graph) returns EntityIterator;
31 ---Purpose : Returns the list of selected entities : they are the Entities
32 -- gotten from the Main Input but not from the Diff Input
34 HasUniqueResult (me) returns Boolean is redefined protected;
35 ---Purpose : Returns always True, because RootResult gives a Unique list
38 Label (me) returns AsciiString from TCollection;
39 ---Purpose : Returns a text defining the criterium : "Difference"