memento_exercise.py File Reference

Implementation of the Memento_Exercise() function as used in the Memento Pattern. More...

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Namespaces
namespace	DesignPatternExamples_python
	The DesignPatternExamples_python package, containing 20 examples of design patterns, each in their own namespace.
namespace	DesignPatternExamples_python.memento
namespace	DesignPatternExamples_python.memento.memento_exercise

Functions
None	Memento_SaveForUndo (Memento_TextObject text, str operation)
	Take a snapshot of the given text object associated with the name of given operation.
None	Memento_Operation_Replace (Memento_TextObject source, str searchPattern, str replaceText)
	An operation to search and replace text in a Memento_TextObject.
None	Memento_Operation_Reverse (Memento_TextObject source)
	An operation to reverse the characters in the given Memento_TextObject.
None	Memento_Undo (Memento_TextObject text)
	Perform an undo on the given Command_TextObject, using the mementos in the "global" undo list.
None	Memento_ApplyReplaceOperation (Memento_TextObject text, str searchPattern, str replaceText)
	Helper function to replace a pattern with another string in the given Memento_TextObject after adding a snapshot of the text object to the undo list.
None	Memento_ApplyReverseOperation (Memento_TextObject text)
	Helper function to reverse the order of the characters in the given Memento_TextObject after adding a snapshot of the text object to an undo list.
def	Memento_Exercise ()
	Example of using the Memento Pattern.

Variables
list	_mementoUndoList = []
	The list of memento objects that form a series of snapshots in time of a Memento_TextObject.

Detailed Description

Implementation of the Memento_Exercise() function as used in the Memento Pattern.

Definition in file memento_exercise.py.