michzio

extension CollectionView { 
 func makeCoordinator() -> Coordinator {
        Coordinator(self)
    }
    
    func makeUIViewController(context: Context) -> CollectionViewController<Section, Item> {
        print("CollectionView.make()")
        
        let controller = CollectionViewController<Section, Item>()
        controller.layout = layout

michzio

extension CollectionView {
    
    private func snapshotForCurrentState() -> NSDiffableDataSourceSnapshot<Section, Item> {
        
        var snapshot = NSDiffableDataSourceSnapshot<Section, Item>()
        snapshot.appendSections(sections)
        for section in sections {
            snapshot.appendItems(items[section]!, toSection: section)
        }
        

michzio

extension CollectionView {
    
    class Coordinator: NSObject, UICollectionViewDelegate {
        
        // MARK: - Properties
        let parent: CollectionView
        var dataSource: UICollectionViewDiffableDataSource<Section, Item>?
        
        // MARK: - Init
        init(_ parent: CollectionView) {

michzio

struct StaticView: View {
    
    @State var value1: String = ""
    @State var value2: String = ""
    
    @ObservedObject var avoider = KeyboardAvoider()
    
    var body: some View {
        
        KeyboardAvoiding(with: avoider) {

michzio

struct ScrollableView: View {
    
    @State var value1: String = ""
    @State var value2: String = ""
       
    @ObservedObject var avoider = KeyboardAvoider()
    
    var body: some View {
       
        NavigationView {

michzio

struct KeyboardAvoiding<Content>: View where Content: View{
    
    @ObservedObject private var avoider : KeyboardAvoider
    
    let content: () -> Content
    let offset: CGFloat
    
    init(with avoider: KeyboardAvoider, offset: CGFloat = 0, @ViewBuilder content: @escaping () -> Content) {
        self.content = content
        self.avoider = avoider

michzio

extension View {
    
    func registerKeyboardAvoider(_ avoider: KeyboardAvoider) -> some View {
        
        self.onPreferenceChange(KeyboardAvoiderPreferenceKey.self) { prefs in
            
            prefs.forEach { pref in
                print("Avoider Rect: \(pref.rect)")
                avoider.rects[pref.tag] = pref.rect
            }

michzio

extension View {
    
    func avoidKeyboard(tag: Int) -> some View {
        self.modifier(KeyboardAvoiderPreferenceReader(tag: tag))
    }
 } 

michzio

struct KeyboardAvoiderPreferenceReader: ViewModifier {
    
    let tag: Int
    
    func body(content: Content) -> some View {
        
        content
            .background(
                GeometryReader { geometry in
                    Rectangle()

michzio

struct KeyboardAvoiderPreference: Equatable {
    
    let tag: Int
    let rect: CGRect
    
    static func == (lhs: KeyboardAvoiderPreference, rhs: KeyboardAvoiderPreference) -> Bool {
        print("y: \(lhs.rect.minY) vs \(rhs.rect.minY)")
       return  lhs.tag == rhs.tag && (lhs.rect.minY == rhs.rect.minY)
    }
}