bitwarden-android/src/App/Utilities/ExtendedObservableCollection.cs

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Collections.Specialized;
using System.ComponentModel;

namespace Bit.App.Utilities
{
    public class ExtendedObservableCollection<T> : ObservableCollection<T>
    {
        public ExtendedObservableCollection() : base() { }
        public ExtendedObservableCollection(IEnumerable<T> collection) : base(collection) { }
        public ExtendedObservableCollection(List<T> list) : base(list) { }

        public void AddRange(IEnumerable<T> range)
        {
            foreach(var item in range)
            {
                Items.Add(item);
            }

            OnPropertyChanged(new PropertyChangedEventArgs("Count"));
            OnPropertyChanged(new PropertyChangedEventArgs("Item[]"));
            OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
        }

        public void Reset(IEnumerable<T> range)
        {
            Items.Clear();
            AddRange(range);
        }
    }
}