ShrlAlgoToolkit/ShrlAlgoToolkit.Mvvm/Behaviors/CloseOnClickBehaviour.cs

using System.Windows;
using System.Windows.Controls;

namespace ShrlAlgoToolkit.Mvvm.Behaviors;

/// <summary>
/// 关闭窗口
/// </summary>
/// <example><Button Content = "Save" Command="{Binding SaveCommand}"></example>
/// <i:Interaction.Triggers>
///    <i:EventTrigger EventName = "Click" >
///        < i:CallMethodAction MethodName = "CloseTrigger" TargetObject="{Binding RelativeSource={RelativeSource IsMultiSelect=FindAncestor, AncestorType=Windows}}" />
///   </i:EventTrigger >
///  </i:Interaction.Triggers >
///</Button>

public class CloseOnClickBehaviour : Microsoft.Xaml.Behaviors.Behavior<FrameworkElement>
{
    public static readonly DependencyProperty IsEnabledProperty = DependencyProperty.RegisterAttached(
        "IsEnabled",
        typeof(bool),
        typeof(CloseOnClickBehaviour),
        new PropertyMetadata(false, OnIsEnabledChanged)
    );

    public static bool GetIsEnabled(DependencyObject obj)
    {
        return (bool)obj.GetValue(IsEnabledProperty);
    }

    public static void SetIsEnabled(DependencyObject obj, bool value)
    {
        obj.SetValue(IsEnabledProperty, value);
    }

    private static void OnIsEnabledChanged(DependencyObject dpo, DependencyPropertyChangedEventArgs args)
    {
        if (dpo is not Button button)
        {
            return;
        }

        var oldValue = (bool)args.OldValue;
        var newValue = (bool)args.NewValue;

        if (!oldValue && newValue)
        {
            button.Click += OnClick;
        }
        else if (oldValue && !newValue)
        {
            button.PreviewMouseLeftButtonDown -= OnClick;
        }
    }

    private static void OnClick(object sender, RoutedEventArgs e)
    {
        if (sender is not Button button)
        {
            return;
        }

        var win = Window.GetWindow(button);

        win?.Close();
    }
}