WorkIndicator/TrayIcon.cs

using System.Windows.Forms;
using WorkIndicator.Properties;

using Application = System.Windows.Application;

namespace WorkIndicator
{
    internal static class TrayIcon
    {
        private static NotifyIcon _trayIcon;

        private static bool _initialized;

        public static void Initialize()
        {
            // Create the tray icon
            _trayIcon = new NotifyIcon { Icon = Resources.MainIcon, Text = Resources.ApplicationName };

            // Setup the menu
            ContextMenuStrip contextMenuStrip = new ContextMenuStrip();
            contextMenuStrip.Opening += HandleContextMenuStripOpening;

            // Add the menu items
            ToolStripMenuItem menuItem = new ToolStripMenuItem(Resources.Auto, null, HandleStatusMenuClick) { Tag = Status.Auto };
            contextMenuStrip.Items.Add(menuItem);

            // --

            menuItem = new ToolStripMenuItem(Resources.Free, null, HandleStatusMenuClick) { Tag = Status.Free };
            contextMenuStrip.Items.Add(menuItem);

            // --

            menuItem = new ToolStripMenuItem(Resources.Working, null, HandleStatusMenuClick) { Tag = Status.Working };
            contextMenuStrip.Items.Add(menuItem);

            // --

            menuItem = new ToolStripMenuItem(Resources.OnPhone, null, HandleStatusMenuClick) { Tag = Status.OnPhone };
            contextMenuStrip.Items.Add(menuItem);

            // --

            menuItem = new ToolStripMenuItem(Resources.Talking, null, HandleStatusMenuClick) { Tag = Status.Talking };
            contextMenuStrip.Items.Add(menuItem);

            // --

            contextMenuStrip.Items.Add("-");
            contextMenuStrip.Items.Add(Resources.TrayIconContextMenuExit, null, HandleContextMenuExitClick);

            // Set the menu into the icon
            _trayIcon.ContextMenuStrip = contextMenuStrip;

            // Show the icon
            _trayIcon.Visible = true;

            _initialized = true;
        }

        static void HandleContextMenuStripOpening(object sender, System.ComponentModel.CancelEventArgs e)
        {
            foreach (ToolStripItem menuItem in _trayIcon.ContextMenuStrip.Items)
            {
                if (menuItem.Tag == null)
                    continue;

                Status status = (Status) menuItem.Tag;

                ((ToolStripMenuItem) menuItem).Checked = (LightController.Status == status);
            }
        }

        private static void HandleStatusMenuClick(object sender, System.EventArgs e)
        {
            ToolStripMenuItem menuItem = (ToolStripMenuItem) sender;

            Status status = (Status) menuItem.Tag;

            LightController.Status = status;
        }

        private static void HandleContextMenuExitClick(object sender, System.EventArgs e)
        {
            // Shutdown the application
            Application.Current.Shutdown();
        }

        public static void Dispose()
        {
            if (!_initialized)
                return;

            // Get rid of the icon
            _trayIcon.Visible = false;
            _trayIcon.Dispose();

            _initialized = false;
        }
    }
}