/*

Copyright (C) 2015 Apple Inc. All Rights Reserved.

See LICENSE.txt for this sample’s licensing information

Abstract:

Protocol that defines information each Element tableview datasource must provide.

*/

@import UIKit;

#import "AtomicElement.h"

@protocol ElementsDataSource <NSObject>

@required

// these properties are used by the view controller

// for the navigation and tab bar

@property (readonly) NSString *name;

@property (readonly) NSString *navigationBarName;

@property (readonly) UIImage *tabBarImage;

// this property determines the style of table view displayed

@property (readonly) UITableViewStyle tableViewStyle;

// provides a standardized means of asking for the element at the specific

// index path, regardless of the sorting or display technique for the specific

// datasource

- (AtomicElement *)atomicElementForIndexPath:(NSIndexPath *)indexPath;

@optional

// this optional protocol allows us to send the datasource this message, since it has the 

// required information

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section;

@end