77 lines
1.9 KiB
C#
77 lines
1.9 KiB
C#
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using System.Collections.Generic;
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using System.Windows;
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using System.Windows.Controls;
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namespace WPFluent.Controls.Primitives;
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public class MenuItemGroup : List<MenuItem>
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{
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public bool IsCanCancel { get; set; } = false;
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public static MenuItemGroup GetGroup(DependencyObject obj)
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{
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return (MenuItemGroup)obj.GetValue(GroupProperty);
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}
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public static void SetGroup(DependencyObject obj, MenuItemGroup value)
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{
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obj.SetValue(GroupProperty, value);
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}
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public static readonly DependencyProperty GroupProperty =
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DependencyProperty.RegisterAttached("Group", typeof(MenuItemGroup), typeof(MenuItemGroup), new PropertyMetadata(null!, OnGroupChanged));
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private static void OnGroupChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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if (d is MenuItem tb)
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{
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((MenuItemGroup)e.NewValue).Join(tb);
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}
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}
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protected bool Handling { get; set; } = false;
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public MenuItemGroup JoinWith(MenuItem menuItem)
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{
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Join(menuItem);
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return this;
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}
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public void Join(MenuItem menuItem)
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{
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Add(menuItem);
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menuItem.Checked += (s, e) =>
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{
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if (s is MenuItem mi && GetGroup(mi) is MenuItemGroup group)
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{
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Handling = true;
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foreach (var tb in group)
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{
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if (tb != mi)
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{
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tb.IsChecked = false;
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}
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}
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Handling = false;
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}
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};
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menuItem.Unchecked += (s, e) =>
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{
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if (!IsCanCancel && !Handling && s is MenuItem mi)
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{
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mi.IsChecked = true;
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}
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};
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SetGroup(menuItem, this);
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}
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public void Unjoin(MenuItem checkBox)
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{
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Remove(checkBox);
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SetGroup(checkBox, null!);
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}
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public static MenuItemGroup New() => [];
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}
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