58 lines
1.8 KiB
C#
58 lines
1.8 KiB
C#
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using System;
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namespace PCL.Core.App.Essentials;
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public class RpcPropertyOperationFailedException : Exception;
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/// <summary>
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/// RPC 属性<br/>
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/// 大多数时候只需要使用构造方法，其他结构保留供内部使用
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/// </summary>
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public class RpcProperty
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{
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public delegate void GetValueDelegate(out string? outValue);
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public event GetValueDelegate GetValue;
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public delegate void SetValueDelegate(string? value, ref bool success);
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public event SetValueDelegate? SetValue;
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public readonly string Name;
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public readonly bool Settable = true;
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public string? Value
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{
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get
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{
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GetValue.Invoke(out var value);
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return value;
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}
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set
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{
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var success = true;
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SetValue?.Invoke(value, ref success);
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if (!success)
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throw new RpcPropertyOperationFailedException();
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}
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}
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/// <param name="name">属性名称</param>
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/// <param name="onGetValue">默认的 <c>GetValue</c> 回调</param>
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/// <param name="onSetValue">默认的 <c>SetValue</c> 回调</param>
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/// <param name="settable">指定该属性是否可更改，若该值为 <c>false</c> 的同时 <paramref name="onSetValue"/> 为 <c>null</c>，则该属性成为只读属性</param>
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public RpcProperty(string name, Func<string?> onGetValue, Action<string?>? onSetValue = null, bool settable = false)
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{
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Name = name;
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GetValue += (out outValue) => { outValue = onGetValue(); };
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if (onSetValue is not null)
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{
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SetValue += (value, ref _) => { onSetValue(value); };
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}
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else if (!settable)
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{
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Settable = false;
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SetValue += (_, ref success) => { success = false; };
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}
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}
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}
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