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public interface History
History objects interface.
Method Summary | |
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Memento |
createMemento()
Create history object. |
void |
setMemento(Memento memento)
Initialize object to state in the past. |
Method Detail |
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Memento createMemento()
Memento
class is just abstract class,
because items and diagram variations need to save specific
values.
See classes derived from Memento
for next details.
Memento
used to save history statusvoid setMemento(Memento memento)
memento
- Memento
object saving history statuscreateMemento()
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