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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)

using System;
using System.Collections.ObjectModel;

namespace Tango.Scripting.Editors.Utils
{
	/// <summary>
	/// A collection that cannot contain null values.
	/// </summary>
	[Serializable]
	public class NullSafeCollection<T> : Collection<T> where T : class
	{
		/// <inheritdoc/>
		protected override void InsertItem(int index, T item)
		{
			if (item == null)
				throw new ArgumentNullException("item");
			base.InsertItem(index, item);
		}
		
		/// <inheritdoc/>
		protected override void SetItem(int index, T item)
		{
			if (item == null)
				throw new ArgumentNullException("item");
			base.SetItem(index, item);
		}
	}
}
tedPermissions { get { return _selectedPermissions; } set { _selectedPermissions = value; RaisePropertyChangedAuto(); } } protected override void OnEdit() { SelectedPermissions = Adapter.Permissions.Select(x => new MultiComboVM<Permission>(x, () => RaisePropertyChanged(nameof(SelectedPermissions)))).ToObservableCollection(); foreach (var permission in SelectedPermissions) { if (SelectedEntity.RolesPermissions.ToList().Exists(x => x.Permission == permission.Entity)) { permission.IsSelected = true; } } base.OnEdit(); } protected override void OnAdd() { SelectedPermissions = Adapter.Permissions.Select(x => new MultiComboVM<Permission>(x, () => RaisePropertyChanged(nameof(SelectedPermissions)))).ToObservableCollection(); base.OnAdd(); } protected override void OnBeforeEntitySave(DialogOpenMode mode, Role role) { base.OnBeforeEntitySave(mode, role); Adapter.Context.RolesPermissions.RemoveRange(role.RolesPermissions); foreach (var permission in SelectedPermissions) { if (permission.IsSelected) { role.RolesPermissions.Add(new RolesPermission() { Permission = permission.Entity, Role = role, PermissionGuid = permission.Entity.Guid, RoleGuid = role.Guid }); } } } } }