38 строки
910 B
C#
38 строки
910 B
C#
|
// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
|
|||
|
|
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
|
|||
|
|
|
|||
|
|
using System;
|
|||
|
|
using System.Collections.Generic;
|
|||
|
|
using System.Linq;
|
|||
|
|
using System.Text;
|
|||
|
|
using System.Windows.Media;
|
|||
|
|
using System.Windows;
|
|||
|
|
using System.Collections;
|
|||
|
|
using System.Windows.Input;
|
|||
|
|
|
|||
|
|
namespace ICSharpCode.TreeView
|
|||
|
|
{
|
|||
|
|
static class ExtensionMethods
|
|||
|
|
{
|
|||
|
|
public static T FindAncestor<T>(this DependencyObject d) where T : class
|
|||
|
|
{
|
|||
|
|
return AncestorsAndSelf(d).OfType<T>().FirstOrDefault();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public static IEnumerable<DependencyObject> AncestorsAndSelf(this DependencyObject d)
|
|||
|
|
{
|
|||
|
|
while (d != null) {
|
|||
|
|
yield return d;
|
|||
|
|
d = VisualTreeHelper.GetParent(d);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public static void AddOnce(this IList list, object item)
|
|||
|
|
{
|
|||
|
|
if (!list.Contains(item)) {
|
|||
|
|
list.Add(item);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|