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1 using System;
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2 using System.Collections.Generic;
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3 using System.Linq;
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4
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5 namespace Implab.Components {
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6 /// <summary>
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7 /// Component container.
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8 /// </summary>
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9 /// <remarks>Instanses of this class are thread safe.</remarks>
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10 public class ComponentContainer<T> : Disposable, ICollection<T> {
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11 readonly HashSet<T> m_components = new HashSet<T>();
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12
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13 public void Clear() {
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14 T[] removed;
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15
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16 lock (m_components) {
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17 removed = new T[m_components.Count];
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18 m_components.CopyTo(removed);
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19 m_components.Clear();
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20 }
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21
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22 foreach (var item in removed.OfType<IDisposable>())
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23 item.Dispose();
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24 }
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25
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26 public bool Contains(T item) {
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27 lock (m_components)
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28 return m_components.Contains(item);
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29 }
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30
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31 public void CopyTo(T[] array, int arrayIndex) {
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32 lock (m_components)
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33 m_components.CopyTo(array, arrayIndex);
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34 }
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35
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36 public bool Remove(T item) {
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37 lock (m_components)
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38 return m_components.Remove(item);
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39 }
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40
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41 public int Count {
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42 get {
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43 lock (m_components)
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44 return m_components.Count;
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45 }
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46 }
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47
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48 public bool IsReadOnly {
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49 get {
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50 return false;
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51 }
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52 }
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53
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54 public IEnumerator<T> GetEnumerator() {
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55 T[] items;
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56 lock (m_components) {
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57 items = new T[m_components.Count];
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58 m_components.CopyTo(items);
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59 return (IEnumerator<T>)items.GetEnumerator();
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60 }
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61 }
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62
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63 System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() {
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64 return GetEnumerator();
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65 }
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66
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67 public void Add(T item) {
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68 Safe.ArgumentNotNull(item, "item");
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69
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70 lock (m_components) {
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71 if (IsDisposed)
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72 Safe.Dispose(item);
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73 else
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74 m_components.Add(item);
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75 }
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76 }
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77
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78 protected override void Dispose(bool disposing) {
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79 base.Dispose(disposing);
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80 Clear();
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81 }
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82 }
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83 }
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84
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