80 lines
2.8 KiB
C#
80 lines
2.8 KiB
C#
using System;
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using System.Reflection;
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namespace XericUI.ReflectionUIGenerator
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{
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/// <summary>
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/// 子属性值访问器 — 通过父访问器 + PropertyPath 访问结构的子字段
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///
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/// 用于拆分属性（[XuiavrgSplit]）场景，如 Vector3 的 x/y/z 分量。
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/// GetValue 通过反射读取父值的子字段/属性；SetValue 由绑定层的 WriteAction 处理。
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/// </summary>
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internal class AvrgSubPropertyAccessor : IAvrgValueAccessor
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{
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private readonly IAvrgValueAccessor _parentAccessor;
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private readonly string _propertyPath;
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private readonly AvrgMemberMetaData _metaData;
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public AvrgSubPropertyAccessor(
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IAvrgValueAccessor parentAccessor,
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string propertyPath,
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AvrgMemberMetaData metaData)
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{
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_parentAccessor = parentAccessor ?? throw new ArgumentNullException(nameof(parentAccessor));
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_propertyPath = propertyPath ?? throw new ArgumentNullException(nameof(propertyPath));
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_metaData = metaData;
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}
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public Type ValueType => _metaData?.ValueType ?? typeof(float);
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public bool IsReadOnly => _parentAccessor.IsReadOnly;
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public object GetValue()
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{
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var parentValue = _parentAccessor.GetValue();
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if (parentValue == null || string.IsNullOrEmpty(_propertyPath))
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return null;
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var type = parentValue.GetType();
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var field = type.GetRuntimeField(_propertyPath);
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if (field != null) return field.GetValue(parentValue);
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var prop = type.GetRuntimeProperty(_propertyPath);
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return prop?.GetValue(parentValue);
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}
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/// <summary>
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/// 子属性设置由绑定层的 WriteAction 统一处理（ReadSubProperty/WriteSubProperty），
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/// 此方法不应被直接调用。
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/// </summary>
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public void SetValue(object value)
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{
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var parentValue = _parentAccessor.GetValue();
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if (parentValue == null) return;
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var type = parentValue.GetType();
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var field = type.GetRuntimeField(_propertyPath);
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if (field != null)
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{
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field.SetValue(parentValue, value);
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_parentAccessor.SetValue(parentValue);
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return;
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}
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var prop = type.GetRuntimeProperty(_propertyPath);
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if (prop != null && prop.CanWrite)
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{
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prop.SetValue(parentValue, value);
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_parentAccessor.SetValue(parentValue);
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}
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}
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public string FormatDisplay(object value)
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{
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if (_metaData?.FormatText != null && value is IFormattable formattable)
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return formattable.ToString(_metaData.FormatText, null);
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return value?.ToString() ?? "";
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}
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}
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}
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