-- File:	PrsMgr_Presentation.cdl
-- Created:	Wed Jan 25 08:49:40 1995
-- Author:	Jean-Louis Frenkel
--		<rmi@pernox>
-- Modified by Rob : 20-feb-1997
-- Modified by Rob : 16-dec-1997 : kind of presentation
---Copyright:	 Matra Datavision 1995

deferred class Presentation from PrsMgr
inherits TShared  from MMgt

uses 

    PresentationManager from PrsMgr,
    KindOfPrs from PrsMgr

is

    Initialize(aPresentationManager: PresentationManager from PrsMgr)
    is protected;

    KindOfPresentation(me) returns KindOfPrs from PrsMgr is deferred;    
    ---Purpose: 2D or 3D
    
    Display(me: mutable) is deferred private;
    
    Erase(me) is deferred private;
    
    Highlight(me: mutable) is deferred private;
    
    Unhighlight (me) is deferred private;
    
    IsHighlighted(me) returns Boolean from Standard
    is deferred private;

    IsDisplayed(me) returns Boolean from Standard
    is deferred private;

    Destroy ( me : mutable )
    is virtual; 
    ---Level: Public    
    ---Purpose: Destructor
    ---C++:     alias ~

    DisplayPriority(me) returns Integer from Standard
    is deferred private;
    
    SetDisplayPriority(me:mutable;aNewPrior:Integer from Standard)
    is deferred private;

    Clear(me: mutable) 
    is deferred private;
    
---Category: Inquire Methods
--            
    PresentationManager(me) returns mutable PresentationManager
    ---Purpose: returns the PresentationManager in which the
    --          presentation has been created.
    is static;
    ---C++: inline
    ---C++: return const&


---Category: Internal Methods

    SetUpdateStatus(me:mutable; aStat : Boolean from Standard);
    ---C++: inline
    
    MustBeUpdated(me) returns Boolean from Standard;
    ---C++: inline


fields

    myPresentationManager: PresentationManager from PrsMgr is protected;
    myMustBeUpdated      : Boolean from Standard is protected;

friends
    class PresentationManager from PrsMgr
        
end Presentation from PrsMgr;