Interface IUndoRedoService

The service handling the undo-redo stack.

Namespace: Telerik.Windows.Diagrams.Core
Assembly: Telerik.Windows.Diagrams.Core.dll

Syntax

public interface IUndoRedoService
Remarks

Note that this service can be customized and plugged into the ServiceLocator.

Properties

IsActive

Gets the is active property.

Declaration
bool IsActive { get; }
Property Value
System.Boolean

Determines whether the undoRedo service is executing undo or redo action at the moment.

RedoBufferSize

Gets or sets the size of the redo buffer.

Declaration
int RedoBufferSize { get; set; }
Property Value
System.Int32

The size of the redo buffer.

RedoStack

Gets the redo stack.

Declaration
IEnumerable<ICommand> RedoStack { get; }
Property Value
System.Collections.Generic.IEnumerable<ICommand>

UndoBufferSize

Gets or sets the size of the undo buffer.

Declaration
int UndoBufferSize { get; set; }
Property Value
System.Int32

The size of the undo buffer.

UndoStack

Gets the undo stack.

Declaration
IEnumerable<ICommand> UndoStack { get; }
Property Value
System.Collections.Generic.IEnumerable<ICommand>

Methods

AddCommand(ICommand)

Adds the given command without executing it.

Declaration
void AddCommand(ICommand command)
Parameters
ICommand command

The command to add.

CanRedo()

Determines whether this instance can redo.

Declaration
bool CanRedo()
Returns
System.Boolean

true if this instance can redo; otherwise, false.

CanUndo()

Determines whether this instance can undo.

Declaration
bool CanUndo()
Returns
System.Boolean

true if this instance can undo; otherwise, false.

Clear()

Clears the undo and redo stacks.

Declaration
void Clear()

ExecuteCommand(ICommand, Object)

Executes the command.

Declaration
void ExecuteCommand(ICommand command, object state = null)
Parameters
ICommand command

The command.
System.Object state

The state.

Redo()

Redoes this instance.

Declaration
void Redo()

RemoveCommand(ICommand)

Removes the command.

Declaration
void RemoveCommand(ICommand command)
Parameters
ICommand command

The command.

Undo(Object)

Undoes this instance.

Declaration
void Undo(object state = null)
Parameters
System.Object state

Events

ActionExecuted

Declaration
event EventHandler<CommandEventArgs> ActionExecuted
Event Type
System.EventHandler<CommandEventArgs>

Extension Methods