command_exercise.py File Reference

Implementation of the Command_Exercise() function as used in the Command 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.command
namespace	DesignPatternExamples_python.command.command_exercise

Functions
def	Command_Save_And_Execute (Command_TextObject text, Command command)
	Save the given command on the undo list then execute the command on the given text object.
None	Command_Operation_Replace (Command_TextObject source, str searchPattern, str replaceText)
	An operation to search and replace text in a Command_TextObject.
def	Command_Operation_Reverse (Command_TextObject source)
	An operation to reverse the characters in the given Command_TextObject.
None	Command_Undo (Command_TextObject text)
	Perform an undo on the given Command_TextObject, using the commands in the "global" undo list.
None	Command_ApplyReplaceCommand (Command_TextObject text, str searchPattern, str replaceText)
	Helper function to create a Command object that replaces text in the given Command_TextObject, adds the command to the undo list and then applies the command to the Command_TextObject.
None	Command_ApplyReverseCommand (Command_TextObject text)
	Helper function to create a Command object that reverses the order of the characters in the given Command_TextObject, adds the command to the undo list and then applies the command to the Command_TextObject.
def	Command_Exercise ()
	Example of using the Command Pattern.

Variables
list	_commandUndoList = []
	The list of commands applied.

Detailed Description

Implementation of the Command_Exercise() function as used in the Command Pattern.

Definition in file command_exercise.py.