com.example.graphics.command.CommandManager Class Reference

Collaboration diagram for com.example.graphics.command.CommandManager:

Public Member Functions
	CommandManager ()
boolean	canRedo ()
boolean	canUndo ()
void	clearHistory ()
void	executeCommand (Command command)
boolean	redo ()
boolean	undo ()

Private Attributes
final Stack< Command >	redoStack
final Stack< Command >	undoStack

Detailed Description

Manager for executing, undoing, and redoing commands. This is part of the Command pattern implementation.

Definition at line 9 of file CommandManager.java.

Constructor & Destructor Documentation

CommandManager()

com.example.graphics.command.CommandManager.CommandManager ( )

inline

Constructor initializes the command stacks

Definition at line 16 of file CommandManager.java.

References redoStack, and undoStack.

Member Function Documentation

canRedo()

boolean com.example.graphics.command.CommandManager.canRedo ( )

inline

Check if there are commands that can be redone

Returns

true if there are commands that can be redone, false otherwise

Definition at line 73 of file CommandManager.java.

References redoStack.

canUndo()

boolean com.example.graphics.command.CommandManager.canUndo ( )

inline

Check if there are commands that can be undone

Returns

true if there are commands that can be undone, false otherwise

Definition at line 65 of file CommandManager.java.

References undoStack.

clearHistory()

void com.example.graphics.command.CommandManager.clearHistory ( )

inline

Clear all command history

Definition at line 80 of file CommandManager.java.

References redoStack, and undoStack.

executeCommand()

void com.example.graphics.command.CommandManager.executeCommand ( Command command )

inline

Execute a command and add it to the undo stack

Parameters

command

the command to execute

Definition at line 25 of file CommandManager.java.

References redoStack, and undoStack.

redo()

boolean com.example.graphics.command.CommandManager.redo ( )

inline

Redo the most recently undone command

Returns

true if a command was redone, false if there are no commands to redo

Definition at line 50 of file CommandManager.java.

References redoStack, and undoStack.

undo()

boolean com.example.graphics.command.CommandManager.undo ( )

inline

Undo the most recently executed command

Returns

true if a command was undone, false if there are no commands to undo

Definition at line 35 of file CommandManager.java.

References redoStack, and undoStack.

Member Data Documentation

redoStack

final Stack<Command> com.example.graphics.command.CommandManager.redoStack

private

Definition at line 11 of file CommandManager.java.

Referenced by CommandManager(), canRedo(), clearHistory(), executeCommand(), redo(), and undo().

undoStack

final Stack<Command> com.example.graphics.command.CommandManager.undoStack

private

Definition at line 10 of file CommandManager.java.

Referenced by CommandManager(), canUndo(), clearHistory(), executeCommand(), redo(), and undo().

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The documentation for this class was generated from the following file:

• src/main/java/com/example/graphics/command/CommandManager.java