-- File:	SelectBasics_EntityOwner.cdl
-- Created:	Thu Feb  9 14:58:14 1995
-- Author:	Mister rmi
--		<rmi@photon>
---Copyright:	 Matra Datavision 1995




deferred class EntityOwner from SelectBasics inherits TShared from MMgt

	---Purpose: defines an abstract owner of sensitive primitives.
	--           Owners are typically used to establish a connection
	--           between sensitive entities and high-level objects (e.g. presentations).
	--
	--          Priority : It's possible to give a priority:
	--           the scale : [0-9] ; the default priority is 0
	--           it allows the predominance of one selected object upon
	--           another one if many objects are selected at the same time
	--            
	--              
	--          example : Selection of shapes : the owners are 
	--           selectable objects (presentations)
	--          
	--           a user can give vertex priority [3], edges [2] faces [1] shape [0],
	--           so that if during selection one vertex one edge and one face are
	--           simultaneously detected, the vertex will only be hilighted.


uses
    Location    from TopLoc
    
is

    Initialize (aPriority: Integer = 0) ; 
    ---Level: Public 

    Set (me:mutable; aPriority :Integer) is static;
    ---Level: Public 
    ---Purpose: sets the selectable priority of the owner
    ---C++: inline

    Priority(me) returns Integer is static;
    ---Level: Public 
    ---C++: inline

    -- Deferred methods dealing with locations.
    -- Used in Select3D package.
    HasLocation(me) returns Boolean from Standard is deferred;
    
    SetLocation(me:mutable; aLoc : Location from TopLoc) is deferred;
    
    ResetLocation(me:mutable) is deferred;
    
    Location(me) returns Location from TopLoc is deferred;
    ---C++: return const&



fields

    mypriority  : Integer is protected;

end EntityOwner;