wdchris

lazy var collectionViewDataSource: CalendarCollectionViewDataSource = {
  let range = CalendarManager.getCalendarRange(withStartDate: startDate, withEndDate: endDate)
  let collectionView = CalendarCollectionViewDataSource(calendarRange: range)
  return collectionView
}()

collectionView.dataSource = self.collectionViewDataSource

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func numberOfSections(in collectionView: UICollectionView) -> Int {
  return calendarRange.count
}

func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
  return calendarRange[section].daysInMonth
}

func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
  switch kind {

wdchris

struct CalendarRange {
	let month: Int
	let year: Int
	let daysInMonth: Int
}

static func getCalendarRange(withStartDate startDate: Date, withEndDate endDate: Date) -> [CalendarRange] {

	let months = Calendar.current.dateComponents([.month], from: startDate, to: endDate).month ?? 1

wdchris

CalendarCell.register(with: collectionView)
CalendarHeader.register(with: collectionView)

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class CalendarHeader: UICollectionReusableView {

	@IBOutlet weak var monthLabel: UILabel!

	static let identifier = "calendarHeader"

	static func register(with collectionView: UICollectionView) {
		collectionView.register(UINib.init(nibName: "CalendarHeader", bundle: nil), forSupplementaryViewOfKind: UICollectionView.elementKindSectionHeader , withReuseIdentifier: identifier)
	}

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class CalendarCell: UICollectionViewCell {

  @IBOutlet weak var dateLabel: UILabel!

  static let identifier = "calendarCell"

  static func register(with collectionView: UICollectionView) {
    collectionView.register(UINib.init(nibName: "CalendarCell", bundle: nil), forCellWithReuseIdentifier: identifier)
  }

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lazy var collectionViewFlowLayout : CalendarCollectionViewFlowLayout = {
  let layout = CalendarCollectionViewFlowLayout()
  return layout
}()

collectionView.delegate = self.collectionViewFlowLayout

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var itemsPerRow: CGFloat = 3

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
	guard let flow = collectionViewLayout as? UICollectionViewFlowLayout else {
		fatalError("only flow layout is supported")
	}

	let paddingSpace = flow.sectionInset.left + flow.sectionInset.right + (minimumInteritemSpacing * itemsPerRow)
	let availableWidth = collectionView.frame.width - paddingSpace
	let widthPerItem = availableWidth / itemsPerRow

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override func viewDidLoad() {
	super.viewDidLoad()

	contentView.addSubview(collectionView)
	collectionView.topAnchor.constraint(equalTo: self.contentView.topAnchor, constant: 0).isActive = true
	collectionView.bottomAnchor.constraint(equalTo: self.contentView.bottomAnchor, constant: 0).isActive = true
	collectionView.leadingAnchor.constraint(equalTo: self.contentView.leadingAnchor, constant: 0).isActive = true
	collectionView.trailingAnchor.constraint(equalTo: self.contentView.trailingAnchor, constant: 0).isActive = true
}

wdchris

import React, { useState } from "react"

const formEncode = data => {
  return Object.keys(data)
    .map(key => encodeURIComponent(key) + "=" + encodeURIComponent(data[key]))
    .join("&")
}

const RegistrationForm = () => {
  const [email, setEmail] = useState("")