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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.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Tango.Core.Commands;
namespace Tango.Visuals
{
/// <summary>
/// Represents an LED like button that acts like a check box.
/// </summary>
public partial class Led : UserControl
{
#region Constructors
public Led()
{
InitializeComponent();
this.PreviewMouseUp += LedControl_PreviewMouseUp;
}
#endregion
#region Event Handlers
void LedControl_PreviewMouseUp(object sender, MouseButtonEventArgs e)
{
if (IsPassive) return;
IsChecked = !IsChecked;
if (Command != null)
{
Command.Execute(null);
}
}
#endregion
#region Properties
/// <summary>
/// Gets or sets whether the LED is on or off.
/// </summary>
public bool IsChecked
{
get { return (bool)GetValue(IsCheckedProperty); }
set { SetValue(IsCheckedProperty, value); }
}
public static readonly DependencyProperty IsCheckedProperty =
DependencyProperty.Register("IsChecked", typeof(bool), typeof(Led), new PropertyMetadata(false));
/// <summary>
/// Gets or sets whether the control is enabled.
/// </summary>
public bool Enabled
{
get { return (bool)GetValue(EnabledProperty); }
set { SetValue(EnabledProperty, value); }
}
public static readonly DependencyProperty EnabledProperty =
DependencyProperty.Register("Enabled", typeof(bool), typeof(Led), new PropertyMetadata(true, new PropertyChangedCallback(EnabledChanged)));
private static void EnabledChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
Led l = d as Led;
if ((bool)e.NewValue)
{
l.gridMask.Visibility = Visibility.Hidden;
l.grid.Visibility = Visibility.Visible;
}
else
{
l.gridMask.Visibility = Visibility.Visible;
l.grid.Visibility = Visibility.Hidden;
}
}
public Brush FillBrush
{
get { return (Brush)GetValue(FillBrushProperty); }
set { SetValue(FillBrushProperty, value); }
}
public static readonly DependencyProperty FillBrushProperty =
DependencyProperty.Register("FillBrush", typeof(Brush), typeof(Led), new PropertyMetadata(null));
public double InnerOpacity
{
get { return (double)GetValue(InnerOpacityProperty); }
set { SetValue(InnerOpacityProperty, value); }
}
public static readonly DependencyProperty InnerOpacityProperty =
DependencyProperty.Register("InnerOpacity", typeof(double), typeof(Led), new PropertyMetadata(1.0));
public bool IsPassive
{
get { return (bool)GetValue(IsPassiveProperty); }
set { SetValue(IsPassiveProperty, value); }
}
public static readonly DependencyProperty IsPassiveProperty =
DependencyProperty.Register("IsPassive", typeof(bool), typeof(Led), new PropertyMetadata(false));
public Brush CheckedBrush
{
get { return (Brush)GetValue(CheckedBrushProperty); }
set { SetValue(CheckedBrushProperty, value); }
}
public static readonly DependencyProperty CheckedBrushProperty =
DependencyProperty.Register("CheckedBrush", typeof(Brush), typeof(Led), new PropertyMetadata(null,CheckBrushChanged));
private static void CheckBrushChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var control = d as Led;
control.Resources["inner"] = control.CheckedBrush;
}
public Brush UnCheckedBrush
{
get { return (Brush)GetValue(UnCheckedBrushProperty); }
set { SetValue(UnCheckedBrushProperty, value); }
}
public static readonly DependencyProperty UnCheckedBrushProperty =
DependencyProperty.Register("UnCheckedBrush", typeof(Brush), typeof(Led), new PropertyMetadata(null,UnCheckedBrushChanged));
private static void UnCheckedBrushChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var control = d as Led;
control.Resources["innerOff"] = control.UnCheckedBrush;
}
#endregion
#region Commands
/// <summary>
/// Represents the command to bind for CanExecute event.
/// </summary>
public RelayCommand Command
{
get { return (RelayCommand)GetValue(CommandProperty); }
set { SetValue(CommandProperty, value); }
}
public static readonly DependencyProperty CommandProperty =
DependencyProperty.Register("Command", typeof(RelayCommand), typeof(Led), new PropertyMetadata(null, new PropertyChangedCallback(CommandChanged)));
private static void CommandChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
Led l = d as Led;
if (l.Command != null)
{
l.Command.CanExecuteChanged += (x, y) =>
{
l.IsEnabled = l.Command.CanExecute(null);
};
}
}
#endregion
}
}
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