115 lines
4.0 KiB
C#
115 lines
4.0 KiB
C#
using System;
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using System.Collections.Generic;
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using DG.Tweening;
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using TMPro;
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using UnityEngine;
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using UnityEngine.Events;
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namespace Ichni.Menu.UI
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{
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/// <summary>
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/// 可复用的多选弹窗元素。调用方提供标题、内容与任意数量的 <see cref="SelectionBoxOption"/>，
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/// 本类动态实例化对应按钮，并确保一次显示最多只会执行一个选项回调。
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/// </summary>
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public class SelectionBox : MonoBehaviour
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{
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[Header("Selection Box")]
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public CanvasGroup canvasGroup;
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public TMP_Text titleText;
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public TMP_Text contentText;
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public RectTransform optionContainer;
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public SelectionBoxButton optionButtonPrefab;
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private readonly List<SelectionBoxButton> _generatedButtons = new();
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private bool _isResolved;
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/// <summary>
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/// 选项被选择并且自身淡出结束后触发。页面容器使用它销毁本次生成的 SelectionBox。
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/// </summary>
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public event Action<SelectionBox> Closed;
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private void Awake()
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{
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canvasGroup ??= GetComponent<CanvasGroup>();
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}
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/// <summary>
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/// 根据运行时选项初始化弹窗。至少需要一个选项；失败时返回 false，且不会显示半配置的弹窗。
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/// </summary>
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public bool SetUp(string title, string content, IReadOnlyList<SelectionBoxOption> options)
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{
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if (canvasGroup == null || optionContainer == null || optionButtonPrefab == null ||
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options == null || options.Count == 0)
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{
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Debug.LogWarning("[SelectionBox] 缺少 CanvasGroup、选项容器、选项按钮预制体，或未提供任何选项。");
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return false;
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}
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ClearGeneratedButtons();
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_isResolved = false;
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if (titleText != null) titleText.text = title ?? string.Empty;
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if (contentText != null) contentText.text = content ?? string.Empty;
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foreach (SelectionBoxOption option in options)
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{
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SelectionBoxButton button = Instantiate(optionButtonPrefab, optionContainer);
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_generatedButtons.Add(button);
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button.SetUp(option.label, () => Select(option.action));
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}
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gameObject.SetActive(true);
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canvasGroup.alpha = 0f;
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canvasGroup.interactable = true;
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canvasGroup.blocksRaycasts = true;
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canvasGroup.DOFade(1f, 0.2f).Play();
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return true;
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}
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private void Select(UnityAction action)
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{
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if (_isResolved) return;
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_isResolved = true;
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// 先禁用所有输入，再执行回调。回调可以触发存档、场景切换或打开下一层 UI，
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// 因而不能让同一帧内的其它按钮再次触发。
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canvasGroup.interactable = false;
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canvasGroup.blocksRaycasts = false;
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foreach (SelectionBoxButton button in _generatedButtons)
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{
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if (button?.button != null)
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button.button.interactable = false;
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}
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action?.Invoke();
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canvasGroup.DOFade(0f, 0.2f).OnComplete(() => Closed?.Invoke(this)).Play();
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}
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private void ClearGeneratedButtons()
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{
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foreach (SelectionBoxButton button in _generatedButtons)
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{
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if (button != null)
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Destroy(button.gameObject);
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}
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_generatedButtons.Clear();
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}
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}
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/// <summary>
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/// SelectionBox 的单个运行时选项。它不序列化到场景或存档；显示时由调用方临时创建。
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/// </summary>
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public readonly struct SelectionBoxOption
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{
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public readonly string label;
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public readonly UnityAction action;
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public SelectionBoxOption(string label, UnityAction action)
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{
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this.label = label;
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this.action = action;
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}
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}
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}
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