115 lines
3.1 KiB
C#
115 lines
3.1 KiB
C#
using System;
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using AlicizaX.UI.Extension;
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using UnityEngine;
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using UnityEngine.UI;
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namespace AlicizaX.UI
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{
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/// <summary>
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/// 视图持有者基类，用于缓存和复用列表项视图
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/// </summary>
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public abstract class ViewHolder : MonoBehaviour
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{
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private RectTransform rectTransform;
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/// <summary>
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/// 获取 RectTransform 组件
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/// </summary>
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public RectTransform RectTransform
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{
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get
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{
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if (rectTransform == null)
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{
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rectTransform = GetComponent<RectTransform>();
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}
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return rectTransform;
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}
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private set { rectTransform = value; }
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}
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/// <summary>
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/// 视图名称，用于区分不同类型的视图
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/// </summary>
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public string Name { get; internal set; }
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/// <summary>
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/// 当前绑定的数据索引
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/// </summary>
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public int Index { get; internal set; }
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/// <summary>
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/// 选中状态
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/// </summary>
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public bool ChoiseState { private set; get; }
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/// <summary>
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/// 获取视图的尺寸
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/// </summary>
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public Vector2 SizeDelta => RectTransform.sizeDelta;
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private IButton _button;
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/// <summary>
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/// 视图首次创建时调用
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/// </summary>
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protected internal virtual void OnStart()
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{
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}
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/// <summary>
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/// 视图被回收到对象池时调用
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/// </summary>
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protected internal virtual void OnRecycled()
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{
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}
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/// <summary>
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/// 绑定视图数据（抽象方法，子类必须实现）
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/// </summary>
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/// <typeparam name="T">数据类型</typeparam>
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/// <param name="data">要绑定的数据</param>
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public abstract void BindViewData<T>(T data);
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/// <summary>
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/// 绑定列表项点击事件
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/// </summary>
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/// <typeparam name="T">数据类型</typeparam>
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/// <param name="data">数据对象</param>
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/// <param name="action">点击回调</param>
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protected internal virtual void BindItemClick<T>(T data, Action<T> action)
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{
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if (_button is null && !TryGetComponent(out _button))
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{
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Log.Warning("找不到Button组件");
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return;
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}
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_button.onClick.RemoveAllListeners();
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_button.onClick.AddListener(() => action?.Invoke(data));
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}
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/// <summary>
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/// 绑定选中状态
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/// </summary>
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/// <param name="state">是否选中</param>
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protected internal void BindChoiceState(bool state)
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{
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if (ChoiseState != state)
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{
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ChoiseState = state;
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OnBindChoiceState(state);
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}
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}
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/// <summary>
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/// 选中状态改变时的回调（可在子类中重写）
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/// </summary>
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/// <param name="state">是否选中</param>
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protected internal virtual void OnBindChoiceState(bool state)
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{
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}
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}
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}
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