123 lines
3.4 KiB
C#
123 lines
3.4 KiB
C#
using System;
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using System.Collections.Generic;
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namespace AlicizaX.UI
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{
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public class GroupAdapter<TData> : Adapter<TData> where TData : IGroupViewData, new()
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{
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private readonly List<TData> showList = new();
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private readonly string groupViewName;
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public GroupAdapter(RecyclerView recyclerView, string groupViewName) : base(recyclerView)
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{
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this.groupViewName = groupViewName;
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}
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public GroupAdapter(RecyclerView recyclerView, List<TData> list) : base(recyclerView, list)
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{
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}
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public GroupAdapter(RecyclerView recyclerView) : base(recyclerView)
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{
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}
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public override int GetItemCount()
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{
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return showList.Count;
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}
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public override string GetViewName(int index)
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{
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return showList[index].TemplateName;
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}
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public override void NotifyDataChanged()
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{
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foreach (var data in list)
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{
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CreateGroup(data.Type);
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}
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var groupList = showList.FindAll(data => data.TemplateName == groupViewName);
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for (int i = 0; i < groupList.Count; i++)
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{
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int index = showList.IndexOf(groupList[i]);
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Collapse(index);
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if (groupList[i].Expanded)
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{
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Expand(index);
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}
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}
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foreach (var group in groupList)
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{
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if (list.FindAll(data => data.Type == group.Type).Count == 0)
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{
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showList.Remove(group);
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}
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}
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base.NotifyDataChanged();
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}
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public override void SetList(List<TData> list)
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{
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showList.Clear();
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base.SetList(list);
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}
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private void CreateGroup(int type)
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{
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var groupData = showList.Find(data => data.Type == type && data.TemplateName == groupViewName);
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if (groupData == null)
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{
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groupData = new TData
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{
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TemplateName = groupViewName,
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Type = type
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};
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showList.Add(groupData);
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}
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}
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public void Expand(int index)
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{
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var expandList = list.FindAll(data => data.Type == showList[index].Type);
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showList.InsertRange(index + 1, expandList);
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}
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public void Collapse(int index)
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{
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var collapseList = showList.FindAll(data => data.Type == showList[index].Type && data.TemplateName != groupViewName);
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showList.RemoveRange(index + 1, collapseList.Count);
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}
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protected override bool TryGetBindData(int index, out TData data)
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{
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if (index < 0 || index >= showList.Count)
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{
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data = default;
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return false;
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}
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data = showList[index];
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return true;
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}
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protected override Action CreateItemClickAction(int index, TData data)
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{
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return () =>
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{
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if (data.TemplateName == groupViewName)
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{
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data.Expanded = !data.Expanded;
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NotifyDataChanged();
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return;
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}
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SetChoiceIndex(index);
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};
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}
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}
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}
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