Removed AcquiringCollection because in hindsight, the design added little value and even required some workarounds to be fully usable in the classes it was intended to simplify; added mono/linux build for the assembly

git-svn-id: file:///srv/devel/repo-conversion/nusu@42 d2e56fa2-650e-0410-a79f-9358c0239efd

Source/Collections/ObservableCollection.cs

@@ -23,13 +23,36 @@ using System.Collections.ObjectModel;
 
 namespace Nuclex.Support.Collections {
 
-  /// <summary>Collection which fires events when items are added or removed</summary>
-  public class ObservableCollection<ItemType> : AcquiringCollection<ItemType> {
+  /// <summary>Generic collection of progressions</summary>
+  public class ObservableCollection<ItemType> : Collection<ItemType> {
+
+    #region class ItemEventArgs
+
+    /// <summary>Arguments class for events that need to pass a progression</summary>
+    public class ItemEventArgs : EventArgs {
+
+      /// <summary>Initializes a new event arguments supplier</summary>
+      /// <param name="item">Item to be supplied to the event handler</param>
+      public ItemEventArgs(ItemType item) {
+        this.item = item;
+      }
+
+      /// <summary>Obtains the collection item the event arguments are carrying</summary>
+      public ItemType Item {
+        get { return this.item; }
+      }
+
+      /// <summary>Item that's passed to the event handler</summary>
+      private ItemType item;
+
+    }
+
+    #endregion // class ItemEventArgs
 
     /// <summary>Raised when an item has been added to the collection</summary>
-    public event EventHandler<ItemEventArgs<ItemType>> ItemAdded;
+    public event EventHandler<ItemEventArgs> ItemAdded;
     /// <summary>Raised when an item is removed from the collection</summary>
-    public event EventHandler<ItemEventArgs<ItemType>> ItemRemoved;
+    public event EventHandler<ItemEventArgs> ItemRemoved;
     /// <summary>Raised the collection is about to be cleared</summary>
     public event EventHandler Clearing;
 
@@ -43,25 +66,74 @@ namespace Nuclex.Support.Collections {
     ///   for the specified list.
     /// </summary>
     /// <param name="list">The list that is wrapped by the new collection.</param>
-    /// <exception cref="System.ArgumentNullException">List is null.</exception>
+    /// <exception cref="System.ArgumentNullException">
+    ///    List is null.
+    /// </exception>
     public ObservableCollection(IList<ItemType> list) : base(list) { }
 
+    /// <summary>Removes all elements from the Collection</summary>
+    protected override void ClearItems() {
+      OnClearing();
+
+      base.ClearItems();
+    }
+
+    /// <summary>
+    ///   Inserts an element into the ProgressionCollection at the specified index
+    /// </summary>
+    /// <param name="index">
+    ///   The object to insert. The value can be null for reference types.
+    /// </param>
+    /// <param name="item">The zero-based index at which item should be inserted</param>
+    protected override void InsertItem(int index, ItemType item) {
+      base.InsertItem(index, item);
+
+      OnAdded(item);
+    }
+
+    /// <summary>
+    ///   Removes the element at the specified index of the ProgressionCollection
+    /// </summary>
+    /// <param name="index">The zero-based index of the element to remove</param>
+    protected override void RemoveItem(int index) {
+      ItemType item = base[index];
+
+      base.RemoveItem(index);
+
+      OnRemoved(item);
+    }
+
+    /// <summary>Replaces the element at the specified index</summary>
+    /// <param name="index">
+    ///   The new value for the element at the specified index. The value can be null
+    ///   for reference types
+    /// </param>
+    /// <param name="item">The zero-based index of the element to replace</param>
+    protected override void SetItem(int index, ItemType item) {
+      ItemType oldItem = base[index];
+
+      base.SetItem(index, item);
+
+      OnRemoved(oldItem);
+      OnAdded(item);
+    }
+
     /// <summary>Fires the 'ItemAdded' event</summary>
     /// <param name="item">Item that has been added to the collection</param>
-    protected override void OnAdded(ItemType item) {
+    protected virtual void OnAdded(ItemType item) {
       if(ItemAdded != null)
-        ItemAdded(this, new ItemEventArgs<ItemType>(item));
+        ItemAdded(this, new ItemEventArgs(item));
     }
 
     /// <summary>Fires the 'ItemRemoved' event</summary>
     /// <param name="item">Item that has been removed from the collection</param>
-    protected override void OnRemoved(ItemType item) {
+    protected virtual void OnRemoved(ItemType item) {
       if(ItemRemoved != null)
-        ItemRemoved(this, new ItemEventArgs<ItemType>(item));
+        ItemRemoved(this, new ItemEventArgs(item));
     }
 
     /// <summary>Fires the 'Clearing' event</summary>
-    protected override void OnClearing() {
+    protected virtual void OnClearing() {
       if(Clearing != null)
         Clearing(this, EventArgs.Empty);
     }