using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Csla;
using Volian.Object.Library;

namespace SimpleTest
{
	public partial class frmUser : Form
	{
		User _user;
		public User User
		{
			get { return _user; }
		}
		private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
		public frmUser(int uid)
		{
			InitializeComponent();
			_user = User.Get(uid);
			_user.BeginEdit();
			//_user.PropertyChanged += new PropertyChangedEventHandler(_user_PropertyChanged);
			//_user.UserMemberships.ListChanged += new ListChangedEventHandler(UserMemberships_ListChanged);
			userBindingSource.DataSource = _user;
		}

		void UserMemberships_ListChanged(object sender, ListChangedEventArgs e)
		{
			LogDirtyStatus("List Changed - " + e.ListChangedType.ToString());
		}

		void _user_PropertyChanged(object sender, PropertyChangedEventArgs e)
		{
			LogDirtyStatus("Property Changed - " + e.PropertyName);
		}
		private void LogDirtyStatus(string s)
		{
			log.InfoFormat("--------{0}-------",s);
			log.InfoFormat("IsDirty = {0}",_user.IsDirty);
			foreach(UserMembership um in _user.UserMemberships){
				log.InfoFormat("{0} IsDirty = {1}",um.Group_GroupName,um.IsDirty);
			}
		}
		private void Save(bool rebind)
		{
			this.userBindingSource.RaiseListChangedEvents = false;
			this.userMembershipsBindingSource.RaiseListChangedEvents = false;
			// do the save
			this.userBindingSource.EndEdit();
			this.userMembershipsBindingSource.EndEdit();
			try
			{
				User temp = _user.Clone();
				_user = temp.Save();
				_user.BeginEdit();
				if (rebind)
				{
					// rebind the UI
					this.userBindingSource.DataSource = null;
					this.userMembershipsBindingSource.DataSource = this.userBindingSource;
					this.userBindingSource.DataSource = _user;
//					ApplyAuthorizationRules();
				}
			}
			catch (Csla.DataPortalException ex)
			{
				MessageBox.Show(ex.BusinessException.ToString(),
					"Error saving", MessageBoxButtons.OK,
					MessageBoxIcon.Exclamation);
			}
			catch (Exception ex)
			{
				MessageBox.Show(ex.ToString(),
					"Error Saving", MessageBoxButtons.OK,
					MessageBoxIcon.Exclamation);
			}
			finally
			{
				this.userBindingSource.RaiseListChangedEvents = true;
				this.userMembershipsBindingSource.RaiseListChangedEvents = true;
				this.userBindingSource.ResetBindings(false);
				this.userMembershipsBindingSource.ResetBindings(false);
			}
		}

		private void btnSave_Click(object sender, EventArgs e)
		{
			LogDirtyStatus("Before Save");
			Save(true);
			LogDirtyStatus("After Save");
		}

		private void btnCancel_Click(object sender, EventArgs e)
		{
			LogDirtyStatus("Before Cancel");
			userBindingSource.RaiseListChangedEvents=false;
			userBindingSource.CancelEdit();
			userBindingSource.RaiseListChangedEvents = true;
//			_user.CancelEdit();
			_user.BeginEdit();
			LogDirtyStatus("After Cancel");
		}
	}
}