59 lines
2.6 KiB
C#
59 lines
2.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Data;
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namespace butterflow_ui
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{
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/// <summary> A visibility converter. </summary>
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[ValueConversion(typeof(bool), typeof(Visibility))]
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public class BoolVisibilityConverter : IValueConverter
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{
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/// <summary> Converts a value. </summary>
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/// <exception cref="InvalidCastException"> Thrown when an object cannot be cast to a required
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/// type. </exception>
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/// <param name="value"> The value produced by the binding source. </param>
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/// <param name="targetType"> The type of the binding target property. </param>
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/// <param name="parameter"> The converter parameter to use. </param>
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/// <param name="culture"> The culture to use in the converter. </param>
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/// <returns>
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/// A converted value. If the method returns <see langword="null" />, the valid null value is
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/// used.
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/// </returns>
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public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
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{
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if (targetType == typeof(Visibility))
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{
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return (bool)value ? Visibility.Visible : Visibility.Hidden;
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}
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throw new InvalidCastException(string.Format("Cannot convert type to {0} from bool.", targetType.Name));
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}
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/// <summary> Converts a value. </summary>
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/// <exception cref="InvalidCastException"> Thrown when an object cannot be cast to a required
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/// type. </exception>
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/// <param name="value"> The value that is produced by the binding target. </param>
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/// <param name="targetType"> The type to convert to. </param>
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/// <param name="parameter"> The converter parameter to use. </param>
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/// <param name="culture"> The culture to use in the converter. </param>
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/// <returns>
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/// A converted value. If the method returns <see langword="null" />, the valid null value is
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/// used.
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/// </returns>
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public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
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{
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if (targetType == typeof(Visibility))
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{
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return ((Visibility)value == Visibility.Visible) ? true : false;
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}
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throw new InvalidCastException(string.Format("Cannot convert type {0} to boolean.", targetType.Name));
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}
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}
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}
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