private int GetHashCode(UndoablePropertyChange undoablePropertyChange)
{
unchecked
{
return(undoablePropertyChange.ModelObject.GetHashCode() + undoablePropertyChange.PropertyDescriptor.Name.GetHashCode());
}
}
/// <summary>
/// Adds the specified IUndoable to this UndoableGroup.
/// </summary>
/// <param name="undoable">The IUndoable to add to this UndoableGroup.</param>
protected override void AddUndoable(IUndoable undoable)
{
UndoablePropertyChange currentUndoablePropertyChange = (UndoablePropertyChange)undoable;
int hashCode = this.GetHashCode(currentUndoablePropertyChange);
this.Reset();
UndoablePropertyChange rootUndoablePropertyChange;
if (!this.rootUndoablePropertyChanges.TryGetValue(hashCode, out rootUndoablePropertyChange))
{
rootUndoablePropertyChange = currentUndoablePropertyChange;
this.rootUndoablePropertyChanges.Add(hashCode, currentUndoablePropertyChange);
}
this.rootUndoablePropertyChanges[hashCode] = new UndoablePropertyChange(
rootUndoablePropertyChange.ModelObject,
rootUndoablePropertyChange.PropertyDescriptor.Name,
rootUndoablePropertyChange.OldValue,
currentUndoablePropertyChange.NewValue);
foreach (UndoablePropertyChange undoablePropertyChange in this.rootUndoablePropertyChanges.Values)
{
base.AddUndoable(undoablePropertyChange);
}
}
