nuclex-shared-dotnet/Nuclex.Support
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Extended to IObservableCollection interface with an ItemsCleared event so subscribers observing the collection only to trigger 'Changed' events (versus subscribers observing the collection to wire/unwire themselves from the collection's items) can make use of the collection

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git-svn-id: file:///srv/devel/repo-conversion/nusu@182 d2e56fa2-650e-0410-a79f-9358c0239efd
This commit is contained in:
Markus Ewald 2009-10-12 19:19:58 +00:00
parent d5293d8cb9
commit 655ae7ab10
5 changed files with 54 additions and 38 deletions
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12
Source/Collections/ObservableDictionary.cs
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@ -32,7 +32,7 @@ namespace Nuclex.Support.Collections {
[Serializable]
public class ObservableDictionary<KeyType, ValueType> :
#if !NO_SERIALIZATION
ISerializable,
ISerializable,
IDeserializationCallback,
#endif
IDictionary<KeyType, ValueType>,
@ -76,6 +76,8 @@ namespace Nuclex.Support.Collections {
public event EventHandler<ItemEventArgs<KeyValuePair<KeyType, ValueType>>> ItemRemoved;
/// <summary>Raised when the dictionary is about to be cleared</summary>
public event EventHandler Clearing;
/// <summary>Raised when the dictionary has been cleared</summary>
public event EventHandler Cleared;
/// <summary>Initializes a new observable dictionary</summary>
public ObservableDictionary() : this(new Dictionary<KeyType, ValueType>()) { }
@ -220,6 +222,7 @@ namespace Nuclex.Support.Collections {
public void Clear() {
OnClearing();
this.typedDictionary.Clear();
OnCleared();
}
/// <summary>Fires the 'ItemAdded' event</summary>
@ -242,6 +245,12 @@ namespace Nuclex.Support.Collections {
Clearing(this, EventArgs.Empty);
}
/// <summary>Fires the 'Cleared' event</summary>
protected virtual void OnCleared() {
if(Cleared != null)
Cleared(this, EventArgs.Empty);
}
#region IEnumerable implementation
/// <summary>Returns a new object enumerator for the Dictionary</summary>
@ -337,6 +346,7 @@ namespace Nuclex.Support.Collections {
void ICollection<KeyValuePair<KeyType, ValueType>>.Clear() {
OnClearing();
this.typedDictionary.Clear();
OnCleared();
}
/// <summary>Removes all items from the Dictionary</summary>