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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.Input;
using System.Windows.Media;
namespace Tango.Touch.Controls
{
public class TouchClickableControl : Grid
{
private bool _isMouseDown;
#region Properties
public object CommandParameter
{
get { return (object)GetValue(CommandParameterProperty); }
set { SetValue(CommandParameterProperty, value); }
}
public static readonly DependencyProperty CommandParameterProperty =
DependencyProperty.Register("CommandParameter", typeof(object), typeof(TouchClickableControl), new PropertyMetadata(null));
#endregion
#region Routed Events
public static readonly RoutedEvent ClickEvent = EventManager.RegisterRoutedEvent("Click", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(TouchClickableControl));
public event RoutedEventHandler Click
{
add
{
AddHandler(ClickEvent, value);
}
remove
{
RemoveHandler(ClickEvent, value);
}
}
#endregion
#region Commands
public ICommand Command
{
get { return (ICommand)GetValue(CommandProperty); }
set { SetValue(CommandProperty, value); }
}
public static readonly DependencyProperty CommandProperty =
DependencyProperty.Register("Command", typeof(ICommand), typeof(TouchClickableControl), new PropertyMetadata(null, (d, e) => (d as TouchClickableControl).OnCommandChanged()));
#endregion
#region Constructors
public TouchClickableControl()
{
Background = Brushes.Transparent;
}
#endregion
#region Private Methods
private void OnCommandChanged()
{
if (Command != null)
{
Command.CanExecuteChanged -= Command_CanExecuteChanged;
Command.CanExecuteChanged += Command_CanExecuteChanged;
}
}
private void Command_CanExecuteChanged(object sender, EventArgs e)
{
IsEnabled = Command != null && Command.CanExecute(CommandParameter);
}
#endregion
#region Override Methods
protected override void OnMouseDown(MouseButtonEventArgs e)
{
base.OnMouseDown(e);
_isMouseDown = true;
}
protected override void OnMouseUp(MouseButtonEventArgs e)
{
base.OnMouseUp(e);
if (_isMouseDown)
{
OnClick();
}
_isMouseDown = false;
}
protected override void OnMouseLeave(MouseEventArgs e)
{
base.OnMouseLeave(e);
_isMouseDown = false;
}
#endregion
#region Virtual Methods
/// <summary>
/// Raises the click event and executes the command.
/// </summary>
protected virtual void OnClick()
{
RoutedEventArgs args = new RoutedEventArgs(TouchClickableControl.ClickEvent, this);
RaiseEvent(args);
if (Command != null && Command.CanExecute(CommandParameter))
{
Command.Execute(CommandParameter);
}
}
#endregion
}
}
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