/*
 Scheduler.h - header for the scheduler for Popup.app
 Copyright (C) 2003, 2004 Rob Burns
 December,13 2003
 
 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Library General Public
 License as published by the Free Software Foundation; either
 version 2 of the License, or any later version.

 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Library General Public License for more details.

 You should have received a copy of the GNU Library General Public
 License along with this library; if not, write to the Free
 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA.
*/


#ifndef _SCHEDULER_H_
#define _SCHEDULER_H_

#ifdef __APPLE__
  #import <Cocoa/Cocoa.h>
  #include "GNUstep.h"
#else
  #include <Foundation/Foundation.h>
  #include <AppKit/AppKit.h>
#endif

@class StackModel;
@class QuizController;
@class CardModel;

@interface Scheduler : NSObject
{
  NSMutableArray *state;
  NSMutableArray *schedule;
  StackModel *cardStack;
  NSDate *nextQuiz;
  
  NSTimer *clock;
}


- (id) init;


// ****************
// Property methods
// ****************

- (NSArray *) state;
- (void) setState: (NSArray *)aState;

- (void) setCardStack: (StackModel *)aStack;

- (NSMutableDictionary *) entryForCard: (CardModel *)aCard;

- (void) setNumberOfCards: (int) number inEntry: (NSMutableDictionary *) anEntry;
- (void) incrementCardsInEntry: (NSMutableDictionary *)anEntry;
- (void) decrementCardsInEntry: (NSMutableDictionary *)anEntry;

- (BOOL) hasSlotZero;
- (NSArray *) schedule;

- (NSArray *) stateFileRep;


// **************
// Action methods
// **************


- (void) processQuiz: (QuizController *)aQuiz;
- (void) updateNextQuizDate;
- (void) createSlotZero;
- (void) quizAlert: (id) sender;


// *****************************************
// NSOutlineView DataSource Protocol Methods
// *****************************************


- (id) outlineView: (NSOutlineView *) outlineView
             child: (int) index
            ofItem: (id) item;
            
- (BOOL) outlineView: (NSOutlineView *) outlineView
    isItemExpandable: (id) item;
    
-    (int) outlineView: (NSOutlineView *) outlineView 
numberOfChildrenOfItem: (id) item;

- (id)        outlineView: (NSOutlineView *) outlineView
objectValueForTableColumn: (NSTableColumn *) tableColumn
                   byItem: (id)item;

@end

#endif // _SCHEDULER_H_