fba9d87e65
git-svn-id: file:///srv/devel/repo-conversion/nusu@40 d2e56fa2-650e-0410-a79f-9358c0239efd
111 lines
3.9 KiB
C#
111 lines
3.9 KiB
C#
#region CPL License
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/*
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Nuclex Framework
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Copyright (C) 2002-2007 Nuclex Development Labs
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This library is free software; you can redistribute it and/or
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modify it under the terms of the IBM Common Public License as
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published by the IBM Corporation; either version 1.0 of the
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License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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IBM Common Public License for more details.
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You should have received a copy of the IBM Common Public
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License along with this library
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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namespace Nuclex.Support.Collections {
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/// <summary>Generic collection of progressions</summary>
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public class AcquiringCollection<ItemType> : Collection<ItemType> {
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/// <summary>
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/// Initializes a new instance of the ObservableCollection class that is empty.
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/// </summary>
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public AcquiringCollection() : base() { }
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/// <summary>
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/// Initializes a new instance of the ObservableCollection class as a wrapper
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/// for the specified list.
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/// </summary>
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/// <param name="list">The list that is wrapped by the new collection.</param>
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/// <exception cref="System.ArgumentNullException">
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/// List is null.
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/// </exception>
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public AcquiringCollection(IList<ItemType> list) : base(list) { }
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/// <summary>Removes all elements from the Collection</summary>
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protected override void ClearItems() {
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OnClearing();
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base.ClearItems();
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}
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/// <summary>
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/// Inserts an element into the ProgressionCollection at the specified index
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/// </summary>
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/// <param name="index">
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/// The object to insert. The value can be null for reference types.
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/// </param>
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/// <param name="item">The zero-based index at which item should be inserted</param>
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protected override void InsertItem(int index, ItemType item) {
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base.InsertItem(index, item);
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OnAdded(item);
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}
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/// <summary>
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/// Removes the element at the specified index of the ProgressionCollection
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/// </summary>
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/// <param name="index">The zero-based index of the element to remove</param>
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protected override void RemoveItem(int index) {
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ItemType item = base[index];
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base.RemoveItem(index);
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OnRemoved(item);
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}
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/// <summary>Replaces the element at the specified index</summary>
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/// <param name="index">
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/// The new value for the element at the specified index. The value can be null
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/// for reference types
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/// </param>
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/// <param name="item">The zero-based index of the element to replace</param>
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protected override void SetItem(int index, ItemType item) {
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ItemType oldItem = base[index];
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base.SetItem(index, item);
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OnRemoved(oldItem);
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OnAdded(item);
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}
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/// <summary>Called when an item has been added to the collection</summary>
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/// <param name="item">Item that has been added to the collection</param>
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protected virtual void OnAdded(ItemType item) { }
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/// <summary>Called when an item has been removed from the collection</summary>
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/// <param name="item">Item that has been removed from the collection</param>
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protected virtual void OnRemoved(ItemType item) { }
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/// <summary>Called when the collection is being cleared</summary>
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/// <remarks>
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/// Instead of calling the OnRemoved() method for each item in the collection when
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/// it is being cleared, this variant only triggers the OnClearing() method
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/// to allow the implementer some room for optimizations.
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/// </remarks>
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protected virtual void OnClearing() { }
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}
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} // namespace Nuclex.Support.Collections
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