1 -- Created on: 1992-12-09
2 -- Created by: Christian CAILLET
3 -- Copyright (c) 1992-1999 Matra Datavision
4 -- Copyright (c) 1999-2012 OPEN CASCADE SAS
6 -- The content of this file is subject to the Open CASCADE Technology Public
7 -- License Version 6.5 (the "License"). You may not use the content of this file
8 -- except in compliance with the License. Please obtain a copy of the License
9 -- at http://www.opencascade.org and read it completely before using this file.
11 -- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
12 -- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
14 -- The Original Code and all software distributed under the License is
15 -- distributed on an "AS IS" basis, without warranty of any kind, and the
16 -- Initial Developer hereby disclaims all such warranties, including without
17 -- limitation, any warranties of merchantability, fitness for a particular
18 -- purpose or non-infringement. Please see the License for the specific terms
19 -- and conditions governing the rights and limitations under the License.
23 deferred class SelectAnyList from IFSelect inherits SelectDeduct
26 ---Purpose : A SelectAnyList kind Selection selects a List of an Entity, as
27 -- well as this Entity contains some. A List contains sub-entities
28 -- as one per Item, or several (for instance if an Entity binds
29 -- couples of sub-entities, each item is one of these couples).
30 -- Remark that only Entities are taken into account (neither
31 -- Reals, nor Strings, etc...)
33 -- To define the list on which to work, SelectAnyList has two
34 -- deferred methods : NbItems (which gives the length of the
35 -- list), FillResult (which fills an EntityIterator). They are
36 -- intended to get a List in an Entity of the required Type (and
37 -- consider that list is empty if Entity has not required Type)
39 -- In addition, remark that some types of Entity define more than
40 -- one list in each instance : a given sub-class of SelectAnyList
41 -- must be attached to one list
43 -- SelectAnyList keeps or rejects a sub-set of the list,
44 -- that is the Items of which rank in the list is in a given
45 -- range (for instance form 2nd to 6th, etc...)
46 -- Range is defined by two Integer values. In order to allow
47 -- external control of them, these values are not directly
48 -- defined as fields, but accessed through IntParams, that is,
49 -- referenced as Transient (Handle) objects
51 -- Warning : the Input can be any kind of Selection, BUT its
52 -- RootResult must have zero (empty) or one Entity maximum
54 uses AsciiString from TCollection, Transient, EntityIterator, Graph, IntParam
56 raises OutOfRange, InterfaceError
60 KeepInputEntity (me; iter : in out EntityIterator) is deferred;
61 ---Purpose : Keeps Input Entity, as having required type. It works by
62 -- keeping in <iter>, only suitable Entities (SelectType can be
63 -- used). Called by RootResult (which waits for ONE ENTITY MAX)
65 NbItems (me; ent : Transient) returns Integer is deferred;
66 ---Purpose : Returns count of Items in the list in the Entity <ent>
67 -- If <ent> has not required type, returned value must be Zero
70 SetRange (me : mutable; rankfrom, rankto : mutable IntParam);
71 ---Purpose : Sets a Range for numbers, with a lower and a upper limits
73 SetOne (me : mutable; rank : mutable IntParam);
74 ---Purpose : Sets a unique number (only one Entity will be sorted as True)
76 SetFrom (me : mutable; rankfrom : mutable IntParam);
77 ---Purpose : Sets a Lower limit but no upper limit
79 SetUntil (me : mutable; rankto : mutable IntParam);
80 ---Purpose : Sets an Upper limit but no lower limit (equivalent to lower 1)
82 HasLower (me) returns Boolean;
83 ---Purpose : Returns True if a Lower limit is defined
85 Lower (me) returns mutable IntParam;
86 ---Purpose : Returns Lower limit (if there is; else, value is senseless)
88 LowerValue (me) returns Integer;
89 ---Purpose : Returns Integer Value of Lower Limit (0 if none)
91 HasUpper (me) returns Boolean;
92 ---Purpose : Returns True if a Lower limit is defined
94 Upper (me) returns mutable IntParam;
95 ---Purpose : Returns Upper limit (if there is; else, value is senseless)
97 UpperValue (me) returns Integer;
98 ---Purpose : Returns Integer Value of Upper Limit (0 if none)
101 RootResult (me; G : Graph) returns EntityIterator raises InterfaceError;
102 ---Purpose : Returns the list of selected entities (list of entities
103 -- complying with rank criterium)
104 -- Error if the input list has more than one Item
106 FillResult (me; n1,n2 : Integer; ent : Transient;
107 res : in out EntityIterator) is deferred;
108 ---Purpose : Puts into <res>, the sub-entities of the list, from n1 to
109 -- n2 included. Remark that adequation with Entity's type and
110 -- length of list has already been made at this stage
111 -- Called by RootResult
114 Label (me) returns AsciiString from TCollection;
115 ---Purpose : Returns a text defining the criterium : "Componants of List "
116 -- then Specific List Label, then, following cases :
117 -- " From .. Until .." or "From .." or "Until .." or "Rank no .."
118 -- Specific type is given by deferred method ListLabel
120 ListLabel (me) returns AsciiString from TCollection is deferred;
121 ---Purpose : Returns the specific label for the list, which is included as