CVMenuBar.swift

//
//  MenuBarCVViewController.swift
//  verytmp
//
//  Created by Don Mag on 5/12/17.
//  Copyright © 2017 DonMag. All rights reserved.
//

import UIKit

class MenuBarCVViewController: UIViewController {

	let menuBar : MenuBar = {
		let mb = MenuBar()
		mb.translatesAutoresizingMaskIntoConstraints = false
		return mb
	}()
	
	func setupMenuBar() {
		view.addSubview(menuBar)
		
		menuBar.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
		menuBar.leftAnchor.constraint(equalTo: view.leftAnchor).isActive = true
		menuBar.widthAnchor.constraint(equalTo: view.widthAnchor).isActive = true
		menuBar.heightAnchor.constraint(equalToConstant: 200).isActive = true
	}
	
    override func viewDidLoad() {
        super.viewDidLoad()

		setupMenuBar()
		
    }

}

class MenuBarCell: UICollectionViewCell {
	
}

class MenuBar : UIView, UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
	
	let cellID : String = "menuCell"
	
	
	lazy var collectionView : UICollectionView = {
		let cv : UICollectionView = UICollectionView(frame: .zero, collectionViewLayout: UICollectionViewFlowLayout())
		cv.backgroundColor = .red
		cv.translatesAutoresizingMaskIntoConstraints = false
		//cv.isScrollEnabled = false
		cv.delegate = self
		cv.dataSource = self
		return cv
	}()
	
	override init(frame: CGRect) {
		super.init(frame: frame)
		setupCollectionView()
	}
	
	required init?(coder aDecoder: NSCoder) {
		super.init(coder: aDecoder)
		setupCollectionView()
	}
	
	func setupCollectionView() {
		addSubview(collectionView)
		collectionView.register(MenuBarCell.self, forCellWithReuseIdentifier: cellID)
		
		// setup menuBar constraints
		collectionView.topAnchor.constraint(equalTo: self.topAnchor).isActive = true
		collectionView.leftAnchor.constraint(equalTo: self.leftAnchor).isActive = true
		collectionView.widthAnchor.constraint(equalTo: self.widthAnchor).isActive = true
		collectionView.heightAnchor.constraint(equalTo: self.heightAnchor).isActive = true
	}
	
	func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
		let cell = collectionView.dequeueReusableCell(withReuseIdentifier: cellID, for: indexPath)
		cell.backgroundColor = .white
		return cell
	}
	
	func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
		return 4
	}
}