C# Class Illusion.SimpleHistory

IActionHistory represents a recorded list of actions undertaken by user. This class implements a usual, linear action sequence. You can move back and forth changing the state of the respective document. When you move forward, you execute a respective action, when you move backward, you Undo it (UnExecute). Implemented through a double linked-list of SimpleHistoryNode objects. ====================================================================

Inheritance: IActionHistory

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Public Methods

Method	Description
AppendAction ( IAction newAction ) : bool	Adds a new action to the tail after current state. If there exist more actions after this, they're lost (Garbage Collected). This is the only method of this class that actually modifies the linked-list.
Clear ( ) : void	All existing Nodes and Actions are garbage collected.
EnumUndoableActions ( ) : IEnumerable	Enums the undoable actions.
GetEnumerator ( ) : IEnumerator
MoveBack ( ) : void	Moves the back.
MoveForward ( ) : void	Moves the forward.
SimpleHistory ( ) : System	Initializes a new instance of the SimpleHistory class.

Protected Methods

Method	Description
RaiseUndoBufferChanged ( ) : void	Raises the undo buffer changed.

Private Methods

Method	Description
Init ( ) : void	Inits this instance.
System ( ) : System.Collections.IEnumerator

Method Details

AppendAction() public method

Adds a new action to the tail after current state. If there exist more actions after this, they're lost (Garbage Collected). This is the only method of this class that actually modifies the linked-list.

public AppendAction ( IAction newAction ) : bool
newAction	IAction	Action to be added.
return	bool

Clear() public method

All existing Nodes and Actions are garbage collected.

public Clear ( ) : void
return	void

EnumUndoableActions() public method

Enums the undoable actions.

public EnumUndoableActions ( ) : IEnumerable
return	IEnumerable

GetEnumerator() public method

public GetEnumerator ( ) : IEnumerator
return	IEnumerator

MoveBack() public method

Moves the back.

public MoveBack ( ) : void
return	void

MoveForward() public method

Moves the forward.

public MoveForward ( ) : void
return	void

RaiseUndoBufferChanged() protected method

Raises the undo buffer changed.

protected RaiseUndoBufferChanged ( ) : void
return	void

SimpleHistory() public method

Initializes a new instance of the SimpleHistory class.

public SimpleHistory ( ) : System
return	System