// Copyright Keysight Technologies 2012-2019
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, you can obtain one at http://mozilla.org/MPL/2.0/.
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using System;
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namespace OpenTap
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{
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/// <summary>
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/// Interface for types that can be enabled.
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/// </summary>
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public interface IEnabled
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{
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/// <summary>
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/// Gets whether a type is enabled.
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/// </summary>
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bool IsEnabled { get; }
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}
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interface IEnabledValue
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{
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bool IsEnabled { get; set; }
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object Value { get; set; }
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}
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/// <summary>
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/// A value that can be enabled or disabled.
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/// </summary>
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/// <typeparam name="T"></typeparam>
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public class Enabled<T> : IEnabled, ICloneable, IEnabledValue
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{
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/// <summary>
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/// Value of the member.
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/// </summary>
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public virtual T Value { get; set; }
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object IEnabledValue.Value
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{
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get => Value;
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set => Value = (T) value;
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}
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/// <summary>
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/// Gets or sets if the member is enabled.
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/// </summary>
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public virtual bool IsEnabled { get; set; }
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/// <summary>
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/// Writes a special string if the value is not enabled. Otherwise just returns Value.ToString.
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/// </summary>
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/// <returns></returns>
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public override string ToString()
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{
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string valueString = null;
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if (Value == null)
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valueString = "NULL";
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else
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valueString = StringConvertProvider.GetString(Value);
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if (!IsEnabled)
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valueString += " (disabled)";
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return valueString;
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}
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/// <summary>
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/// Creates a clone of this object.
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/// </summary>
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/// <returns></returns>
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public object Clone()
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{
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T value = Value;
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if(Value is ICloneable)
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value = (T)((ICloneable)Value).Clone();
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return new Enabled<T> { Value = value, IsEnabled = IsEnabled };
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}
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}
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}
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