ReadOnlyObservableBindingList.cs

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//-----------------------------------------------------------------------
// <copyright file="ReadOnlyObservableBindingList.cs" company="Marimer LLC">
//     Copyright (c) Marimer LLC. All rights reserved.
//     Website: https://cslanet.com
// </copyright>
// <summary>A readonly version of ObservableBindingList.</summary>
//-----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Linq;
using System.Text;
using Csla.Properties;
 
namespace Csla.Core
{
  [Serializable]
  public class ReadOnlyObservableBindingList<C> : ObservableBindingList<C>,
    Core.IReadOnlyBindingList
  {
    public ReadOnlyObservableBindingList()
    {
      AllowEdit = false;
      AllowNew = false;
      AllowRemove = false;
 
      this.CollectionChanged += (o, e) =>
        {
          if (IsReadOnly)
            throw new NotSupportedException(Resources.ChangeReadOnlyListInvalid);
        };
    }
 
    protected override void OnCollectionChanged(NotifyCollectionChangedEventArgs e)
    {
      if (IsReadOnly)
        throw new NotSupportedException(Resources.ChangeReadOnlyListInvalid);
      base.OnCollectionChanged(e);
    }
 
    #region IsReadOnly
 
    private bool _isReadOnly = true;
 
    public bool IsReadOnly
    {
      get { return _isReadOnly; }
      protected set { _isReadOnly = value; }
    }
 
    bool Core.IReadOnlyBindingList.IsReadOnly
    {
      get { return IsReadOnly; }
      set { IsReadOnly = value; }
    }
 
    protected override void SetLoadListMode(bool enabled)
    {
      IsReadOnly = !enabled;
      base.SetLoadListMode(enabled);
    }
 
    #endregion
 
    #region MobileFormatter
 
    protected override void OnGetState(Csla.Serialization.Mobile.SerializationInfo info)
    {
      base.OnGetState(info);
      info.AddValue("Csla.Core.ReadOnlyBindingList._isReadOnly", _isReadOnly);
    }
 
    protected override void OnSetState(Csla.Serialization.Mobile.SerializationInfo info)
    {
      base.OnSetState(info);
      _isReadOnly = info.GetValue<bool>("Csla.Core.ReadOnlyBindingList._isReadOnly");
    }
 
    protected override void OnSetChildren(Csla.Serialization.Mobile.SerializationInfo info, Csla.Serialization.Mobile.MobileFormatter formatter)
    {
      var old = IsReadOnly;
      IsReadOnly = false;
      base.OnSetChildren(info, formatter);
      IsReadOnly = old;
    }
 
    #endregion
  }
}