using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Effects;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace Tango.Visuals
{
    /// <summary>
    /// Interaction logic for AnalogSwitch.xaml
    /// </summary>
    public partial class AnalogSwitch : UserControl
    {
        public event Action<AnalogSwitch> CheckedChanged;

        public AnalogSwitch()
        {
            InitializeComponent();
            this.PreviewMouseUp += AnalogSwitch_PreviewMouseUp;
        }

        void AnalogSwitch_PreviewMouseUp(object sender, MouseButtonEventArgs e)
        {
            IsChecked = !IsChecked;
        }

        public bool IsChecked
        {
            get { return (bool)GetValue(IsCheckedProperty); }
            set { SetValue(IsCheckedProperty, value); }
        }

        // Using a DependencyProperty as the backing store for IsChecked.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty IsCheckedProperty =
            DependencyProperty.Register("IsChecked", typeof(bool), typeof(AnalogSwitch), new PropertyMetadata(false,new PropertyChangedCallback(CheckChanged)));

        private static void CheckChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            AnalogSwitch s = d as AnalogSwitch;
            if ((bool)e.NewValue)
            {
                s.imgON.Visibility = Visibility.Visible;
                s.imgOFF.Visibility = Visibility.Hidden;
            }
            else
            {
                s.imgOFF.Visibility = Visibility.Visible;
                s.imgON.Visibility = Visibility.Hidden;
            }

            if (s.CheckedChanged != null) s.CheckedChanged(s);
        }

        
    }
}