protected virtual void OnSavedStateChanged(SavedStates newSavedState)
{
if (SavedStateChanged == null)
{
return;
}
SavedStateChanged(this, new EventArgs <SavedStates>(newSavedState));
}
public void Restore(int transactionId)
{
if (SavedStates.TryGetValue(transactionId, out var savedState))
{
SavedStates[transactionId] = _savedCellContent;
_savedCellContent = savedState;
RejectChanges();
}
}
/// <summary>
/// Remove selected state.
/// </summary>
/// <param name="index">Specifies which saved state should be removed.</param>
protected bool RemoveState(int index)
{
if (!HasState(index))
{
return(false);
}
SavedStates.RemoveAt(index);
return(true);
}
private void CancelChanges()
{
Category = new CategoryModel
{
CategoryName = SavedCategory.CategoryName
};
if (SavedCategory.CategoryID != null)
{
Category.CategoryID = SavedCategory.CategoryID;
}
States = new ObservableCollection <StateModel>(SavedStates.ToList());
}
public void CommitChanges(int transactionId, bool revertable)
{
if (revertable)
{
SavedStates[transactionId] = _savedCellContent;
}
_savedCellContent = new CellContent(HostedCell);
var maxSavedTransaction = SavedStates.Select(x => x.Key).DefaultIfEmpty(0).Max();
for (var i = transactionId + 1; i <= maxSavedTransaction; i++)
{
SavedStates.Remove(i);
}
}
/// <summary>
/// Remove all saved states.
/// </summary>
protected void ClearStates()
{
SavedStates.Clear();
}
/// <summary>
/// Save current state.
/// </summary>
protected void SaveCurrentState()
{
SavedStates.Add(Originator.SaveStateToMemento());
}
