CmdManager (object)

The command manager contains and manages the command undo-redo stack.

The command manager follows this pattern : http://kapo-cpp.blogspot.ca/2007/10/multilevel-undo-with-command-pattern.html

参考

HandlerDispatcher, Cmd, BaseCmd

Members

Cmd[]	undoStack	Array of undo commands
Cmd[]	redoStack	Array of redo commands

Methods

	CmdManager ( in CmdManager other )
	CmdManager ()
	clearRedoStack ! ()
CmdManager	clone ? ()
Boolean	exec ! ( io Cmd cmd )
Ref<Cmd>	getCmdInUndoStack ? ( in Index index )
Size	getNumCmdInUndoStack ? ()
Ref<CmdManager>	getOrCreateCmdManager ? ()
Boolean	redo ! ()
Boolean	undo ! ()

Methods in detail

CmdManager ( in CmdManager other )

copy constructor

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CmdManager ()

default constructor

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CmdManager.clearRedoStack! ()

Clear the stack.

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CmdManager CmdManager.clone? ()

clone method

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Boolean CmdManager.exec! ( io Cmd cmd )

Executes a command and adds it to the stack.

cmd	The command to execute

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Ref<Cmd> CmdManager.getCmdInUndoStack? ( in Index index )

Gets a reference to command at index.

index

The index of the command in the stack

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Size CmdManager.getNumCmdInUndoStack? ()

Gets the number of commands within the stack.

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Ref<CmdManager> CmdManager.getOrCreateCmdManager? ()

Gets the CmdManager singleton, or constructs it if it didn’t exist.

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Boolean CmdManager.redo! ()

Redoes the command stack.

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Boolean CmdManager.undo! ()

Undoes the command stack.