void EvalTransactionState()
{
var objectsToSave = TransactionalChangeHandler.ObjectsToSave(unitOfWork);
saveChangesItem.Enabled =
discardChangesItem.Enabled = objectsToSave;
}
private bool ValidateAndCommit()
{
var checkables = TransactionalChangeHandler.GetCheckables(unitOfWork);
if (TransactionalChangeHandler.Validate(checkables) == false)
{
return(false);
}
var relatedRooms = checkables.
OfType <RoomBooking>().
Where(rb => rb.Room != null).
Select(rb => rb.Room);
var relatedRoomResults = DemoDatabase.BizRulezChecker.Check("save", relatedRooms).ToList();
if (relatedRoomResults.Count > 0)
{
XtraMessageBox.Show("There have been errors during data validation.");
return(false);
}
unitOfWork.CommitChanges();
return(true);
}
public void DiscardChanges(UnitOfWork unitOfWork, XPBaseCollection collection)
{
var deletedTLObjects = TransactionalChangeHandler.GetDeletedTLObjects <RoomBooking>(unitOfWork);
foreach (var newObject in TransactionalChangeHandler.GetSavedNewObjects(unitOfWork))
{
TransactionalChangeHandler.ResetAssociations(newObject);
// special behavior for this form
if (newObject is RoomBooking)
{
// remove the appointment from the collection, this doesn't
// happen automatically
var appt = schedulerStorage.Appointments.Items.Find(
a => object.ReferenceEquals(a.GetRow(schedulerStorage), newObject));
schedulerStorage.Appointments.Remove(appt);
}
}
unitOfWork.ReloadChangedObjects();
// special behavior: get the right collection first
var roomBookingCollection = (IList <RoomBooking>)schedulerStorage.Appointments.DataSource;
foreach (var item in deletedTLObjects)
{
roomBookingCollection.Add(item);
}
}
private void RoomBookingView_Load(object sender, System.EventArgs e)
{
TransactionalChangeHandler.Hookup <RoomBooking>(
DocumentManager.FromControl(ParentForm).View, unitOfWork, saveChangesItem,
discardChangesItem, null, null, null, null, null, null,
RoomBookingView_Closing,
saveChangesItem_ItemClick,
discardChangesItem_ItemClick);
}
public void DiscardChangesItemClickHandler(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
if (ObjectsToSave(unitOfWork))
{
if (XtraMessageBox.Show("This operation is going to discard all unsaved changes. Are you sure you want to proceed?", "Question",
MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
TransactionalChangeHandler.DiscardChanges <T>(unitOfWork, topLevelCollection);
}
}
}
private void discardChangesItem_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
if (TransactionalChangeHandler.ObjectsToSave(unitOfWork))
{
if (XtraMessageBox.Show("This operation is going to discard all unsaved changes. Are you sure you want to proceed?", "Question",
MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
//scheduler.BeginUpdate();
try {
// Use my own DiscardChanges
DiscardChanges(unitOfWork, null);
}
finally {
//scheduler.EndUpdate();
}
}
}
}
public void DocumentClosingHandler(object sender, DocumentCancelEventArgs e)
{
if (TransactionalChangeHandler.ObjectsToSave(unitOfWork))
{
var answer = XtraMessageBox.Show("There are unsaved changes. Do you want to validate and save before closing the list?", "Question",
MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question);
if (answer == DialogResult.Yes)
{
if (!TransactionalChangeHandler.ValidateAndCommit(unitOfWork))
{
e.Cancel = true;
}
}
else if (answer == DialogResult.Cancel)
{
e.Cancel = true;
}
}
}
public void SaveChangesItemClickHandler(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
TransactionalChangeHandler.ValidateAndCommit(unitOfWork);
}
private void EventView_Load(object sender, System.EventArgs e)
{
TransactionalChangeHandler.Hookup <Event>(
DocumentManager.FromControl(ParentForm).View, unitOfWork, commitChangesItem,
discardChangesItem, eventCollection);
}
private void CustomerList_Load(object sender, System.EventArgs e)
{
TransactionalChangeHandler.Hookup <Customer>(
DocumentManager.FromControl(ParentForm).View, unitOfWork, saveChangesItem,
discardChangesItem, customerCollection);
}