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-- File: XSControl_SelectForTransfer.cdl
-- Created: Tue Mar 26 14:03:27 1996
-- Author: Christian CAILLET
-- <cky@fidox>
---Copyright: Matra Datavision 1996
class SelectForTransfer from XSControl inherits SelectExtract from IFSelect
---Purpose : This selection selects the entities which are recognised for
-- transfer by an Actor for Read : current one or another one.
--
-- An Actor is an operator which runs transfers from interface
-- entities to objects for Imagine. It has a method to recognize
-- the entities it can process (by default, it recognises all,
-- this method can be redefined).
--
-- A TransferReader brings an Actor, according to the currently
-- selected norm and transfer conditions.
--
-- This selection considers, either the current Actor (brought by
-- the TransferReader, updated as required), or a precise one.
uses AsciiString from TCollection, InterfaceModel,
ActorOfTransientProcess, TransferReader
is
Create returns mutable SelectForTransfer;
---Purpose : Creates a SelectForTransfer, non initialised
-- it sorts nothing, unless an Actor has been defined
Create (TR : TransferReader) returns mutable SelectForTransfer;
---Purpose : Creates a SelectForTransfer, which will work with the
-- currently defined Actor brought by the TransferReader
SetReader (me : mutable; TR : TransferReader);
---Purpose : Sets a TransferReader to sort entities : it brings the Actor,
-- which may change, while the TransferReader does not
SetActor (me : mutable; act : mutable ActorOfTransientProcess);
---Purpose : Sets a precise actor to sort entities
-- This definition oversedes the creation with a TransferReader
Actor (me) returns ActorOfTransientProcess;
---Purpose : Returns the Actor used as precised one.
-- Returns a Null Handle for a creation from a TransferReader
-- without any further setting
Reader (me) returns TransferReader;
---Purpose : Returns the Reader (if created with a Reader)
-- Returns a Null Handle if not created with a Reader
Sort (me; rank : Integer; ent : Transient; model : InterfaceModel)
returns Boolean;
---Purpose : Returns True for an Entity which is recognized by the Actor,
-- either the precised one, or the one defined by TransferReader
--Sort (me; ent : in out Transient) returns Boolean;
ExtractLabel (me) returns AsciiString from TCollection;
---Purpose : Returns a text defining the criterium : "Recognized for Transfer [(current actor)]"
fields
theTR : TransferReader;
theAC : ActorOfTransientProcess;
end SelectForTransfer;
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