HeadMeld/TrayManager.cs

using System;
using System.Windows.Forms;

namespace HeadMeld
{
    internal class TrayManager
    {
        NotifyIcon notifyIcon = new();

        public bool UseHeadphoneMode { get; set; } = true;
        public bool UseDarkMode { get; set; }

        public TrayManager() => notifyIcon.Click += NotifyIcon_Click;

        public void Create()
        {
            notifyIcon.Visible = true;
        }

        public void Destroy()
        {
            notifyIcon.Visible = false;
            notifyIcon.Dispose();
        }

        public void UpdateTrayIcon()
        {
            if (UseHeadphoneMode == true)
            {
                if (UseDarkMode == true)
                    notifyIcon.Icon = new System.Drawing.Icon("Resources/headphones_light.ico");
                else
                    notifyIcon.Icon = new System.Drawing.Icon("Resources/headphones_dark.ico");
            }
            else if (UseHeadphoneMode == false)
            {
                if (UseDarkMode == true)
                    notifyIcon.Icon = new System.Drawing.Icon("Resources/loudspeakers_light.ico");
                else
                    notifyIcon.Icon = new System.Drawing.Icon("Resources/loudspeakers_dark.ico");
            }
        }

        public event EventHandler ToggleWindowState;
        private void NotifyIcon_Click(object? sender, EventArgs e)
        {
            ToggleWindowState?.Invoke(this, EventArgs.Empty);
        }
    }
}