1  // Copyright (c) Microsoft Corporation
 2  // The Microsoft Corporation licenses this file to you under the MIT license.
 3  // See the LICENSE file in the project root for more information.
 4  
 5  using System.Diagnostics;
 6  using CommunityToolkit.WinUI;
 7  using Microsoft.UI.Xaml;
 8  using Microsoft.UI.Xaml.Controls;
 9  
10  namespace Microsoft.CmdPal.UI.Controls;
11  
12  /// <summary>
13  /// A helper control which takes an <see cref="IconSource"/> and creates the corresponding <see cref="IconElement"/>.
14  /// </summary>
15  public partial class ContentIcon : FontIcon
16  {
17      public UIElement Content
18      {
19          get => (UIElement)GetValue(ContentProperty);
20          set => SetValue(ContentProperty, value);
21      }
22  
23      public static readonly DependencyProperty ContentProperty =
24          DependencyProperty.Register(
25              nameof(Content),
26              typeof(UIElement),
27              typeof(ContentIcon),
28              new PropertyMetadata(null));
29  
30      public ContentIcon()
31      {
32          Loaded += IconBoxElement_Loaded;
33      }
34  
35      private void IconBoxElement_Loaded(object sender, RoutedEventArgs e)
36      {
37          if (this.FindDescendants().OfType<Grid>().FirstOrDefault() is Grid grid && Content is not null)
38          {
39              if (grid.Children.Contains(Content))
40              {
41                  return;
42              }
43  
44              if (Content is FrameworkElement element && element.Parent is not null)
45              {
46                  Debug.Assert(false, $"IconBoxElement Content is already parented to {element.Parent.GetType().Name}");
47                  return;
48              }
49  
50              grid.Children.Add(Content);
51          }
52      }
53  }