Restorable (SNAP Engine API)

All Known Subinterfaces:

Figure, FigureCollection, FigureSelection, Handle, PointFigure, ShapeFigure

All Known Implementing Classes:

AbstractFigure, AbstractHandle, AbstractPointFigure, AbstractShapeFigure, DefaultFigureCollection, DefaultFigureSelection, DefaultPointFigure, DefaultShapeFigure, PointHandle, RotateHandle, ScaleHandle, VertexHandle
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public interface Restorable
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An object implementing this interface can create a memento by which it's state can be restored after the object has been changed.
The interface is used to realize the GoF Memento Design Pattern.

Since:

Ceres 0.10

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Object`	`createMemento()`	Creates a `memento` which contains all state information used to restore this object at a later point in time by calling `setMemento(memento)`.
`void`	`setMemento(Object memento)`	Restores this object's state from the given memento object.

- Method Detail
  - createMemento
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Object createMemento()
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    Creates a memento which contains all state information used to restore this object at a later point in time by calling setMemento(memento).
    
    Returns:
    
    A memento, or null if a memento cannot be created.
  - setMemento
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void setMemento(Object memento)
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    Restores this object's state from the given memento object.
    This method will always (at least) accept the memento objects created by the createMemento() method.
    
    Parameters:
    
    memento - A memento object.