A delegate class to handle UICollectionView events

MNGCollectionViewHandler.swift

//
//  MNGCollectionViewHandler.swift
//  
//
//  Created by Tommie N. Carter, Jr., MBA on 6/21/15.
//  Copyright © 2015 MING Technology. All rights reserved.
//

import UIKit

class MNGCollectionViewHandler: NSObject, UICollectionViewDelegate, UICollectionViewDataSource {
    
    var data:[Photo]? = []
    var collectionView:UICollectionView? = nil
    let flowLayout = UICollectionViewFlowLayout()
    
    override init() {
        super.init()
        setupCollectionViewFlowLayout()
    }
    convenience init (aCollectionView:UICollectionView) {
        self.init()
        
        collectionView = aCollectionView
        
        if collectionView != nil {
            collectionView!.setCollectionViewLayout(self.flowLayout, animated: true)
        }
    }
    
    func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
        //
        return UICollectionViewCell()
    }
    func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
        //
    }
    func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        //collectionView.setCollectionViewLayout(self.flowLayout, animated: true)
        return self.data?.count ?? 1
    }
    func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
        return 1
    }
 
    func setupCollectionViewFlowLayout () {
        
        flowLayout.scrollDirection = .Horizontal
        flowLayout.minimumInteritemSpacing = 0.0
        flowLayout.minimumLineSpacing = 0.0
        
        
        if self.data?.count > 0 {
            collectionView!.pagingEnabled = true
        }
    }

}