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1 | -- Created on: 1992-11-17 |
2 | -- Created by: Christian CAILLET |
3 | -- Copyright (c) 1992-1999 Matra Datavision |
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4 | -- Copyright (c) 1999-2014 OPEN CASCADE SAS |
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5 | -- |
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6 | -- This file is part of Open CASCADE Technology software library. |
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7 | -- |
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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 |
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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. |
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13 | -- |
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14 | -- Alternatively, this file may be used under the terms of Open CASCADE |
15 | -- commercial license or contractual agreement. |
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16 | |
17 | deferred class SelectCombine from IFSelect inherits Selection |
18 | |
19 | ---Purpose : A SelectCombine type Selection defines algebraic operations |
20 | -- between results of several Selections |
21 | -- It is a deferred class : sub-classes will have to define |
22 | -- precise what operator is to be applied |
23 | |
24 | uses AsciiString from TCollection, EntityIterator, |
25 | Graph, SelectionIterator, TSeqOfSelection |
26 | |
27 | is |
28 | |
29 | Initialize; |
30 | ---Purpose : Defines an empty SelectCombine |
31 | |
32 | NbInputs (me) returns Integer; |
33 | ---Purpose : Returns the count of Input Selections |
34 | |
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35 | Input (me; num : Integer) returns Selection; |
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36 | ---Purpose : Returns an Input Selection, given its rank in the list |
37 | |
38 | InputRank (me; sel : Selection) returns Integer; |
39 | ---Purpose : Returns the rank of an input Selection, 0 if not in the list. |
40 | -- Most generally, its value is meaningless, except for testing |
41 | -- the presence of an input Selection : |
42 | -- - == 0 if <sel> is not an input for <me> |
43 | -- - > 0 if <sel> is an input for <me> |
44 | |
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45 | Add (me : mutable; sel : Selection; atnum : Integer = 0); |
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46 | ---Purpose : Adds a Selection to the filling list |
47 | -- By default, adds it to the end of the list |
48 | -- A Positive rank less then NbInputs gives an insertion rank |
49 | -- (InsertBefore : the new <atnum>th item of the list is <sel>) |
50 | |
51 | Remove (me : mutable; sel : Selection) returns Boolean; |
52 | ---Purpose : Removes an input Selection. |
53 | -- Returns True if Done, False, if <sel> is not an input for <me> |
54 | |
55 | Remove (me : mutable; num : Integer) returns Boolean; |
56 | ---Purpose : Removes an input Selection, given its rank in the list |
57 | -- Returns True if Done, False if <num> is out of range |
58 | |
59 | |
60 | HasUniqueResult (me) returns Boolean is redefined protected; |
61 | ---Purpose : Returns always True, because RootResult gives a Unique list |
62 | |
63 | |
64 | FillIterator (me; iter : in out SelectionIterator); |
65 | ---Purpose : Puts in an Iterator the Selections from which "me" depends |
66 | -- That is to say, the list of Input Selections |
67 | |
68 | fields |
69 | |
70 | thelist : TSeqOfSelection; |
71 | |
72 | end SelectCombine; |