source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/Common/Auxiliary/ObservableCollectionHelper.cs @ 13808

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections.ObjectModel;
using System.Collections.Specialized;

namespace Microsoft.Research.DynamicDataDisplay.Common.Auxiliary
{
  internal static class ObservableCollectionHelper
  {
    public static void ApplyChanges<T>(this ObservableCollection<T> collection, NotifyCollectionChangedEventArgs args)
    {
      if (args.NewItems != null)
      {
        int startingIndex = args.NewStartingIndex;
        var newItems = args.NewItems;

        for (int i = 0; i < newItems.Count; i++)
        {
          T addedItem = (T)newItems[i];
          collection.Insert(startingIndex + i, addedItem);
        }
      }
      if (args.OldItems != null)
      {
        for (int i = 0; i < args.OldItems.Count; i++)
        {
          T removedItem = (T)args.OldItems[i];
          collection.Remove(removedItem);
        }
      }
    }
  }
}