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146 行
3.3 KiB

using System;
using System.Collections;
using System.Collections.Generic;
namespace UnityEngine.Experimental.Rendering
{
public sealed class ListChangedEventArgs<T> : EventArgs
{
public readonly int index;
public readonly T item;
public ListChangedEventArgs(int index, T item)
{
this.index = index;
this.item = item;
}
}
public delegate void ListChangedEventHandler<T>(ObservableList<T> sender, ListChangedEventArgs<T> e);
public class ObservableList<T> : IList<T>
{
IList<T> m_List;
public event ListChangedEventHandler<T> ItemAdded;
public event ListChangedEventHandler<T> ItemRemoved;
public T this[int index]
{
get { return m_List[index]; }
set
{
OnEvent(ItemRemoved, index, m_List[index]);
m_List[index] = value;
OnEvent(ItemAdded, index, value);
}
}
public int Count
{
get { return m_List.Count; }
}
public bool IsReadOnly
{
get { return false; }
}
public ObservableList()
: this(0) {}
public ObservableList(int capacity)
{
m_List = new List<T>(capacity);
}
public ObservableList(IEnumerable<T> collection)
{
m_List = new List<T>(collection);
}
void OnEvent(ListChangedEventHandler<T> e, int index, T item)
{
if (e != null)
e(this, new ListChangedEventArgs<T>(index, item));
}
public bool Contains(T item)
{
return m_List.Contains(item);
}
public int IndexOf(T item)
{
return m_List.IndexOf(item);
}
public void Add(T item)
{
m_List.Add(item);
OnEvent(ItemAdded, m_List.IndexOf(item), item);
}
public void Add(params T[] items)
{
foreach (var i in items)
Add(i);
}
public void Insert(int index, T item)
{
m_List.Insert(index, item);
OnEvent(ItemAdded, index, item);
}
public bool Remove(T item)
{
int index = m_List.IndexOf(item);
bool ret = m_List.Remove(item);
if (ret)
OnEvent(ItemRemoved, index, item);
return ret;
}
public int Remove(params T[] items)
{
if (items == null)
return 0;
int count = 0;
foreach (var i in items)
count += Remove(i) ? 1 : 0;
return count;
}
public void RemoveAt(int index)
{
var item = m_List[index];
m_List.RemoveAt(index);
OnEvent(ItemRemoved, index, item);
}
public void Clear()
{
for (int i = 0; i < Count; i++)
RemoveAt(i);
}
public void CopyTo(T[] array, int arrayIndex)
{
m_List.CopyTo(array, arrayIndex);
}
public IEnumerator<T> GetEnumerator()
{
return m_List.GetEnumerator();
}
IEnumerator IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
}
}