112 lines
3.6 KiB
C#
112 lines
3.6 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 MixedViewProvider : ViewProvider
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{
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private readonly MixedObjectPool<ViewHolder> objectPool;
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private readonly Dictionary<string, ViewHolder> templatesByName = new(StringComparer.Ordinal);
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public override string PoolStats =>
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$"hits={objectPool.HitCount}, misses={objectPool.MissCount}, destroys={objectPool.DestroyCount}";
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public MixedViewProvider(RecyclerView recyclerView, ViewHolder[] templates) : base(recyclerView, templates)
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{
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for (int i = 0; i < templates.Length; i++)
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{
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ViewHolder template = templates[i];
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if (template == null)
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{
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continue;
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}
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Type templateType = template.GetType();
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templatesByName[nameof(templateType)] = template;
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}
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UnityMixedComponentFactory<ViewHolder> factory = new(templatesByName, recyclerView.Content);
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objectPool = new MixedObjectPool<ViewHolder>(factory);
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}
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public override ViewHolder GetTemplate(string viewName)
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{
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if (templates == null || templates.Length == 0)
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{
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throw new NullReferenceException("ViewProvider templates can not null or empty.");
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}
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if (!templatesByName.TryGetValue(viewName, out ViewHolder template))
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{
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throw new KeyNotFoundException($"ViewProvider template '{viewName}' was not found.");
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}
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return template;
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}
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public override ViewHolder[] GetTemplates()
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{
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if (templates == null || templates.Length == 0)
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{
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throw new NullReferenceException("ViewProvider templates can not null or empty.");
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}
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ViewHolder[] values = new ViewHolder[templatesByName.Count];
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templatesByName.Values.CopyTo(values, 0);
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return values;
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}
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public override ViewHolder Allocate(string viewName)
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{
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var viewHolder = objectPool.Allocate(viewName);
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viewHolder.gameObject.SetActive(true);
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return viewHolder;
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}
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public override void Free(string viewName, ViewHolder viewHolder)
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{
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objectPool.Free(viewName, viewHolder);
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}
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public override void Reset()
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{
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Clear();
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(Adapter as IItemRenderCacheOwner)?.ReleaseAllItemRenders();
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objectPool.Dispose();
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}
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public override void PreparePool()
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{
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int warmCount = GetRecommendedWarmCount();
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if (warmCount <= 0)
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{
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return;
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}
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int itemCount = GetItemCount();
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int start = Math.Max(0, LayoutManager.GetStartIndex());
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int end = Math.Min(itemCount - 1, start + warmCount - 1);
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Dictionary<string, int> counts = new(StringComparer.Ordinal);
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for (int index = start; index <= end; index++)
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{
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string viewName = Adapter.GetViewName(index);
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if (string.IsNullOrEmpty(viewName))
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{
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continue;
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}
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counts.TryGetValue(viewName, out int count);
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counts[viewName] = count + 1;
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}
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foreach (var pair in counts)
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{
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int targetCount = pair.Value + Math.Max(1, LayoutManager.Unit);
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objectPool.EnsureCapacity(pair.Key, targetCount);
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objectPool.Warm(pair.Key, targetCount);
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}
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}
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}
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}
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