69 lines
1.5 KiB
C#
69 lines
1.5 KiB
C#
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using System;
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using System.Reflection;
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namespace ProjectCruiser;
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// Параметризованный набор объектов
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public class ListGenericObjects<T> : ICollectionGenObj<T>
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where T : class
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{
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// Список объектов, которые храним
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private readonly List<T?> _collection;
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// Максимально допустимое число объектов в списке
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private int _maxCount;
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public int Count => _collection.Count;
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public int SetMaxCount { set { if (value > 0) { _maxCount = value; } } }
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public ListGenericObjects()
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{
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_collection = new();
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}
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public T? GetItem(int position)
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{
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if (position > _maxCount - 1 || position < 0)
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{
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return null;
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}
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return _collection[position];
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}
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public int Insert(T obj)
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{
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if (Count + 1 < _maxCount || obj == null)
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{
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return -1;
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}
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_collection.Add(obj);
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return Count;
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}
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public int Insert(T obj, int position)
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{
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if (position >= _maxCount || position < 0 ||
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_collection[position] != null)
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{
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return -1;
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}
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_collection.Insert(position, obj);
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return position;
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}
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public T? Remove(int position)
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{
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if (position >= Count || position < 0)
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// on the other positions items don't exist
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{
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return null;
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}
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T? item = _collection[position];
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_collection.RemoveAt(position);
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return item;
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}
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}
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