LogDashboard/Source/LogDashboard.UI/ViewModel/MainWindowViewModel.cs

//******************************************************************************//
// MainWindowViewModel.cs
// 12/4/2023
//
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//******************************************************************************//
using ControlzEx.Theming;
using GalaSoft.MvvmLight;
using GalaSoft.MvvmLight.Messaging;
using MahApps.Metro.Controls.Dialogs;
using System.Windows;
using System.Windows.Media;

namespace Raytheon.LogDashboard.ViewModel
{
	public class MainWindowViewModel : ViewModelBase
	{
        protected static LogDashViewModelLocator LocatorInstance;
        private IDialogCoordinator _dialogCoordinator;

        public MainWindowViewModel(IDialogCoordinator instance)
        {
            _dialogCoordinator = instance;

            Messenger.Default.Register<string>(this, "ColorChange", ColorChangeHandler);
            Messenger.Default.Register<string>(this, "ThemeChange", ThemeChangeHandler);

            Messenger.Default.Register<string>(this, "DisplayCustomMessage", DisplayCustomMessageHandler);

            LocatorInstance = (Application.Current.Resources["LogDashLocator"] as LogDashViewModelLocator);
        }

        private void ThemeChangeHandler(string theme)
        {
            if(!string.IsNullOrEmpty(theme))
            {
                if(theme.Contains("Dark"))
                {
                    ThemeManager.Current.ChangeThemeBaseColor(Application.Current.MainWindow, "Dark");
                }
                else
                {
                    ThemeManager.Current.ChangeThemeBaseColor(Application.Current.MainWindow, "Light");
                }
            }
        }

        private void ColorChangeHandler(string selectedColor)
		{
            if(!string.IsNullOrEmpty(selectedColor) && Application.Current.MainWindow != null)
            {
                ThemeManager.Current.ChangeThemeColorScheme(Application.Current.MainWindow, selectedColor);
                
                Application.Current.Resources["MahApps.Brushes.ToggleSwitch.FillOn"] = ColorConverter.ConvertFromString(selectedColor);

                RaisePropertyChanged(() => IconColor);
            }
        }

		public SolidColorBrush IconColor
		{
			get => LocatorInstance.SelectedColorTheme.Color;
		}

		public static double PreviousWindowHeight
		{
			get { return Properties.Settings.Default.PreviousWindowHeight; }
			set { Properties.Settings.Default.PreviousWindowHeight = value; }
		}
		public static double CurrentWindowHeight
		{
			get { return Properties.Settings.Default.CurrentWindowHeight; }
			set
			{
				Properties.Settings.Default.PreviousWindowHeight = Properties.Settings.Default.CurrentWindowHeight;
				Properties.Settings.Default.CurrentWindowHeight = value;
				Properties.Settings.Default.Save();
			}
		}

		public static double PreviousWindowWidth
		{
			get { return Properties.Settings.Default.PreviousWindowWidth; }
			set { Properties.Settings.Default.PreviousWindowWidth = value; }
		}
		public static double CurrentWindowWidth
		{
			get { return Properties.Settings.Default.CurrentWindowWidth; }
			set
			{
				Properties.Settings.Default.PreviousWindowWidth = Properties.Settings.Default.CurrentWindowWidth;
				Properties.Settings.Default.CurrentWindowWidth = value;
				Properties.Settings.Default.Save();
			}
		}

		public static double PreviousWindowLeft
		{
			get { return Properties.Settings.Default.PreviousWindowLeft; }
			set { Properties.Settings.Default.PreviousWindowLeft = value; }
		}
		public static double CurrentWindowLeft
		{
			get { return Properties.Settings.Default.CurrentWindowLeft; }
			set
			{
				Properties.Settings.Default.PreviousWindowLeft = Properties.Settings.Default.CurrentWindowLeft;
				Properties.Settings.Default.CurrentWindowLeft = value;
				Properties.Settings.Default.Save();
			}
		}

		public static double PreviousWindowTop
		{
			get { return Properties.Settings.Default.PreviousWindowTop; }
			set { Properties.Settings.Default.PreviousWindowTop = value; }
		}
		public static double CurrentWindowTop
		{
			get { return Properties.Settings.Default.CurrentWindowTop; }
			set
			{
				Properties.Settings.Default.PreviousWindowTop = Properties.Settings.Default.CurrentWindowTop;
				Properties.Settings.Default.CurrentWindowTop = value;
				Properties.Settings.Default.Save();
			}
		}

        /// <summary>
        /// handles custom message with single Okay button
        /// </summary>
        /// <param name="message"></param>
        private async void DisplayCustomMessageHandler(string message)
        {
            await _dialogCoordinator.ShowMessageAsync(this, "Log Dashboard", message).ConfigureAwait(false);
        }
    }
}