iOS implementation of the Haptic Feedback Helper

HapticFeedbackHelperIOS.cs

//
// HapticFeedbackHelperIOS.cs
//
// Author:
//       Francois Raminosona <framinosona@hotmail.fr>
//
// Copyright (c) 2018 Francois Raminosona
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using UIKit;

namespace HapticFeedbackPlayground.iOS
{
    public enum HapticFeedbackType
    {
        ImpactHeavy, // Heavy impact
        ImpactMedium, // Medium impact
        ImpactLight, // Light impact
        Selection, // To tick while scrolling through a scrollview or carousel
        NotificationError, // When an in-app error notification occurs
        NotificationWarning, // When an in-app warning notification occurs
        NotificationSuccess // When an in-app success notification occurs
    }

    public class HapticFeedbackHelperIOS : IDisposable
    {
        private UIImpactFeedbackGenerator _impactHeavyFeedbackGenerator;
        private UIImpactFeedbackGenerator _impactMediumFeedbackGenerator;
        private UIImpactFeedbackGenerator _impactLightFeedbackGenerator;
        private UISelectionFeedbackGenerator _selectionFeedbackGenerator;
        private UINotificationFeedbackGenerator _notificationFeedbackGenerator;

        public HapticFeedbackHelperIOS()
        {
            _impactHeavyFeedbackGenerator = new UIImpactFeedbackGenerator(UIImpactFeedbackStyle.Heavy);
            _impactMediumFeedbackGenerator = new UIImpactFeedbackGenerator(UIImpactFeedbackStyle.Medium);
            _impactLightFeedbackGenerator = new UIImpactFeedbackGenerator(UIImpactFeedbackStyle.Light);
            _selectionFeedbackGenerator = new UISelectionFeedbackGenerator();
            _notificationFeedbackGenerator = new UINotificationFeedbackGenerator();
        }


        public void PrepareHapticFeedback(HapticFeedbackType type)
        {
            switch (type)
            {
                case HapticFeedbackType.ImpactHeavy:
                    _impactHeavyFeedbackGenerator.Prepare();
                    break;
                case HapticFeedbackType.ImpactMedium:
                    _impactMediumFeedbackGenerator.Prepare();
                    break;
                case HapticFeedbackType.ImpactLight:
                    _impactLightFeedbackGenerator.Prepare();
                    break;
                case HapticFeedbackType.Selection:
                    _selectionFeedbackGenerator.Prepare();
                    break;
                case HapticFeedbackType.NotificationError:
                case HapticFeedbackType.NotificationWarning:
                case HapticFeedbackType.NotificationSuccess:
                    _notificationFeedbackGenerator.Prepare();
                    break;
            }
        }

        public void ExecuteHapticFeedback(HapticFeedbackType type)
        {
            switch (type)
            {
                case HapticFeedbackType.ImpactHeavy:
                    _impactHeavyFeedbackGenerator.ImpactOccurred();
                    break;
                case HapticFeedbackType.ImpactMedium:
                    _impactMediumFeedbackGenerator.ImpactOccurred();
                    break;
                case HapticFeedbackType.ImpactLight:
                    _impactLightFeedbackGenerator.ImpactOccurred();
                    break;
                case HapticFeedbackType.Selection:
                    _selectionFeedbackGenerator.SelectionChanged();
                    break;
                case HapticFeedbackType.NotificationError:
                    _notificationFeedbackGenerator.NotificationOccurred(UINotificationFeedbackType.Error);
                    break;
                case HapticFeedbackType.NotificationWarning:
                    _notificationFeedbackGenerator.NotificationOccurred(UINotificationFeedbackType.Warning);
                    break;
                case HapticFeedbackType.NotificationSuccess:
                    _notificationFeedbackGenerator.NotificationOccurred(UINotificationFeedbackType.Success);
                    break;
            }
        }

        #region IDisposable
        public void Dispose()
        {
            _impactHeavyFeedbackGenerator = null;
            _impactMediumFeedbackGenerator = null;
            _impactLightFeedbackGenerator = null;
            _selectionFeedbackGenerator = null;
            _notificationFeedbackGenerator = null;
        }
        #endregion


    }
}