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.Controls.Primitives;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace Tango.Touch.Controls
{
    public class TouchToggleButton : ToggleButton, ITouchControl
    {
        private Object _uncheckedContent;
        private bool _loaded;
        private bool first_checked;

        #region ITouchControl

        public CornerRadius CornerRadius
        {
            get { return (CornerRadius)GetValue(CornerRadiusProperty); }
            set { SetValue(CornerRadiusProperty, value); }
        }
        public static readonly DependencyProperty CornerRadiusProperty =
            DependencyProperty.Register("CornerRadius", typeof(CornerRadius), typeof(TouchToggleButton), new PropertyMetadata(new CornerRadius()));

        public bool EnableDropShadow
        {
            get { return (bool)GetValue(EnableDropShadowProperty); }
            set { SetValue(EnableDropShadowProperty, value); }
        }
        public static readonly DependencyProperty EnableDropShadowProperty =
            DependencyProperty.Register("EnableDropShadow", typeof(bool), typeof(TouchToggleButton), new PropertyMetadata(true));

        public double BlurRadius
        {
            get { return (double)GetValue(BlurRadiusProperty); }
            set { SetValue(BlurRadiusProperty, value); }
        }
        public static readonly DependencyProperty BlurRadiusProperty =
            DependencyProperty.Register("BlurRadius", typeof(double), typeof(TouchToggleButton), new PropertyMetadata(10.0));

        public double ShadowDepth
        {
            get { return (double)GetValue(ShadowDepthProperty); }
            set { SetValue(ShadowDepthProperty, value); }
        }
        public static readonly DependencyProperty ShadowDepthProperty =
            DependencyProperty.Register("ShadowDepth", typeof(double), typeof(TouchToggleButton), new PropertyMetadata(1.0));

        public Color ShadowColor
        {
            get { return (Color)GetValue(ShadowColorProperty); }
            set { SetValue(ShadowColorProperty, value); }
        }
        public static readonly DependencyProperty ShadowColorProperty =
            DependencyProperty.Register("ShadowColor", typeof(Color), typeof(TouchToggleButton), new PropertyMetadata(Colors.Gray));



        public Brush RippleBrush
        {
            get { return (Brush)GetValue(RippleBrushProperty); }
            set { SetValue(RippleBrushProperty, value); }
        }
        public static readonly DependencyProperty RippleBrushProperty =
            DependencyProperty.Register("RippleBrush", typeof(Brush), typeof(TouchToggleButton), new PropertyMetadata(null));



        #endregion

        public Object CheckedContent
        {
            get { return (Object)GetValue(CheckedContentProperty); }
            set { SetValue(CheckedContentProperty, value); }
        }
        public static readonly DependencyProperty CheckedContentProperty =
            DependencyProperty.Register("CheckedContent", typeof(Object), typeof(TouchToggleButton), new PropertyMetadata(null));

        static TouchToggleButton()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(TouchToggleButton), new FrameworkPropertyMetadata(typeof(TouchToggleButton)));
        }

        public TouchToggleButton()
        {
            Loaded += (_, __) =>
            {
                if (!_loaded)
                {
                    _uncheckedContent = Content;
                    _loaded = true;
                }
            };

            Checked += (_, __) =>
            {
                if (_loaded)
                {
                    Content = CheckedContent != null ? CheckedContent : Content;
                }
                else
                {
                    Loaded += (x, y) => 
                    {
                        if (!first_checked)
                        {
                            Content = CheckedContent != null ? CheckedContent : Content;
                            first_checked = true;
                        }
                    };
                }
            };
            Unchecked += (_, __) => Content = _uncheckedContent;
        }
    }
}