106 lines
3.5 KiB
C#
106 lines
3.5 KiB
C#
using System.Collections.Generic;
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using System.Linq;
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using UnityEngine;
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using UnityEngine.UI;
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namespace XericUI.ReflectionUIGenerator
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{
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/// <summary>
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/// Dropdown 值组件 — 处理 string / int / enum 类型的下拉选择交互
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/// 预设选项来源：元数据的 PresetOptions 或 enum 类型的枚举名
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/// </summary>
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[AddComponentMenu("Xeric Library/UI Action Vessel/Values/XUIAvrgMDDropdownValue")]
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public class XUIAvrgMDDropdownValue : XUIAvrgMDValue
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{
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[SerializeField]
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[Tooltip("关联的 Dropdown 组件（未设置则自动查找）")]
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#if dUI_TextMeshPro
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private TMPro.TMP_Dropdown _dropdown;
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#else
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private Dropdown _dropdown;
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#endif
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private void Awake()
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{
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#if dUI_TextMeshPro
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if (_dropdown == null) _dropdown = GetComponent<TMPro.TMP_Dropdown>();
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#else
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if (_dropdown == null) _dropdown = GetComponent<Dropdown>();
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#endif
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}
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public override void BindToAccessor(
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IAvrgValueAccessor accessor,
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AvrgMvvmBinding binding,
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AvrgMvvmScheduler scheduler)
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{
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CurrentAccessor = accessor;
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CurrentBinding = binding;
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if (binding == null || accessor == null || _dropdown == null) return;
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// 构建选项列表
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var options = BuildOptions(accessor.ValueType);
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_dropdown.ClearOptions();
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_dropdown.AddOptions(options);
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// UI → 数据
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_dropdown.onValueChanged.AddListener(index =>
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{
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if (index >= 0 && index < options.Count)
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{
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object convertedVal = ConvertOptionToValue(options[index], accessor.ValueType);
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binding.WriteFromUI(convertedVal);
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scheduler?.MarkUIDirty(binding);
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}
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});
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// 数据 → UI
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binding.OnUIDataChanged += value =>
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{
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int idx = FindOptionIndex(value, options);
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if (idx >= 0)
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_dropdown.SetValueWithoutNotify(idx);
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};
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// 首次同步
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var initialValue = accessor.GetValue();
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int initialIdx = FindOptionIndex(initialValue, options);
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if (initialIdx >= 0)
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_dropdown.SetValueWithoutNotify(initialIdx);
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}
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private List<string> BuildOptions(System.Type valueType)
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{
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if (BoundMetaData?.PresetOptions != null && BoundMetaData.PresetOptions.Count > 0)
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return BoundMetaData.PresetOptions.ToList();
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if (valueType != null && valueType.IsEnum)
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return System.Enum.GetNames(valueType).ToList();
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return new List<string>();
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}
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private int FindOptionIndex(object value, List<string> options)
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{
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if (value == null || options.Count == 0) return -1;
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string valueStr = value.ToString();
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for (int i = 0; i < options.Count; i++)
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{
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if (options[i] == valueStr) return i;
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}
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return -1;
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}
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private static object ConvertOptionToValue(string option, System.Type targetType)
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{
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if (targetType == typeof(string)) return option;
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if (targetType == typeof(int) && int.TryParse(option, out int intVal)) return intVal;
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if (targetType != null && targetType.IsEnum)
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return System.Enum.Parse(targetType, option);
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return option;
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}
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}
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}
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