public IListTOfVMemento <T, U> Restore(T target)
{
var returnMemento = new PropertyChangedMemento <T, U, V>(_child, _propertyInfo, _value);
_child.RestorePropertyInternal(_propertyInfo, _value);
return(returnMemento);
}
private void Button_Click(object sender, RoutedEventArgs e)
{
Int32 ordinal = Int32.Parse(((Button)sender).Tag.ToString());
var current = Persons.First(p => p.Ordinal == ordinal);
var below = Persons.First(p => p.Ordinal == ordinal + 1);
_undoRedoHistory.BeginCompoundDo(0); // Passing in zero to get the first memento pointer back
PropertyChangedMemento <PersonList, Person, int> MoveDownPropertyChangedMemento = new PropertyChangedMemento <PersonList, Person, int>(current, Person.PropertyOrdinal, current.Ordinal);
PropertyChangedMemento <PersonList, Person, int> MoveUpPropertyChangedMemento = new PropertyChangedMemento <PersonList, Person, int>(below, Person.PropertyOrdinal, below.Ordinal);
MoveItemDownMemento <PersonList, Person> moveItemDownMemento = new MoveItemDownMemento <PersonList, Person>(current, ordinal + 1);
_undoRedoHistory.CheckPoint(MoveDownPropertyChangedMemento);
_undoRedoHistory.CheckPoint(MoveUpPropertyChangedMemento);
_undoRedoHistory.CheckPoint(moveItemDownMemento);
_undoRedoHistory.EndCompoundDo();
current.Ordinal = ordinal + 1;
below.Ordinal = ordinal;
Persons.Move(ordinal, ordinal + 1);
DataGrid1.ScrollIntoView(current);
}
private void TextBox_GotFocus(object sender, RoutedEventArgs e)
{
_textAtGotFocus = ((TextBox)sender).Text;
var selectedItem = ((TextBox)sender).Tag as Person;
if (selectedItem is null)
{
return;
}
PropertyChangedMemento <PersonList, Person, String> personPropertyChangedMemento = new PropertyChangedMemento <PersonList, Person, String>(selectedItem, Person.PropertyDescription, selectedItem.Description);
_undoRedoHistory.CheckPoint(personPropertyChangedMemento);
}
private void ButtonDelete_Click(object sender, RoutedEventArgs e)
{
Person selectedItem = ((Button)sender).Tag as Person;
if (selectedItem.Deleted)
{
return;
}
PropertyChangedMemento <PersonList, Person, Boolean> personPropertyChangedMemento = new PropertyChangedMemento <PersonList, Person, Boolean>(selectedItem, Person.PropertyDeleted, selectedItem.Deleted);
_undoRedoHistory.CheckPoint(personPropertyChangedMemento);
selectedItem.Deleted = true;
}