VisibilityToBoolConverter.cs

// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

namespace CommunityToolkit.WinUI.Converters;

/// <summary>
/// This class converts a Visibility enumeration to a boolean value.
/// </summary>
public partial class VisibilityToBoolConverter : IValueConverter
{
    /// <summary>
    /// Convert a <see cref="Visibility"/> value to boolean.
    /// </summary>
    /// <param name="value">The <see cref="Visibility"/> value to convert.</param>
    /// <param name="targetType">The type of the target property, as a type reference.</param>
    /// <param name="parameter">Optional parameter. Not used.</param>
    /// <param name="language">The language of the conversion. Not used</param>
    /// <returns>The value to be passed to the target dependency property.</returns>
    public object Convert(object value, Type targetType, object parameter, string language)
    {
        return value is Visibility visibility && visibility == Visibility.Visible;
    }

    /// <summary>
    /// Convert back a boolean value to <see cref="Visibility"/>.
    /// </summary>
    /// <param name="value">The <see cref="Visibility"/> value to convert back.</param>
    /// <param name="targetType">The type of the target property, as a type reference.</param>
    /// <param name="parameter">Optional parameter. Not used.</param>
    /// <param name="language">The language of the conversion. Not used</param>
    /// <returns>The value to be passed to the target dependency property.</returns>
    public object ConvertBack(object value, Type targetType, object parameter, string language)
    {
        return (value is bool bl && bl) ? Visibility.Visible : Visibility.Collapsed;
    }
}