Class UndoRedoService

Service managing the undo redo actions.

Inheritance
System.Object
UndoRedoService
Namespace: Telerik.Windows.Diagrams.Core
Assembly: Telerik.Windows.Diagrams.Core.dll

Syntax

public class UndoRedoService : Object, IUndoRedoService

Constructors

UndoRedoService()

Initializes a new instance of the UndoRedoService class.

Declaration
public UndoRedoService()

Properties

IsActive

Gets the is active property.

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

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

RedoBufferSize

Gets or sets the size of the redo buffer. Must be non-negative integer.

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

The size of the redo buffer.
Implements

RedoStack

Gets the redo stack.

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

Implements

UndoBufferSize

Gets or sets the size of the undo buffer. Must be non-negative integer.

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

The size of the undo buffer.
Implements

UndoStack

Gets the undo stack.

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

Implements

Methods

AddCommand(ICommand)

Adds the given command without executing it.

Declaration
public void AddCommand(ICommand command)
Parameters
ICommand command

The command to add.
Implements

CanRedo()

Determines whether this instance can redo.

Declaration
public bool CanRedo()
Returns
System.Boolean

true if this instance can redo; otherwise, false.
Implements

CanUndo()

Determines whether this instance can undo.

Declaration
public bool CanUndo()
Returns
System.Boolean

true if this instance can undo; otherwise, false.
Implements

Clear()

Clears the undo and redo stacks.

Declaration
public virtual void Clear()
Implements

ExecuteCommand(ICommand, Object)

Executes the command.

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

The command.
System.Object state

The state.
Implements

OnActionExecuted(CommandEventArgs)

Raises the ActionExecuted event.

Declaration
protected virtual void OnActionExecuted(CommandEventArgs args)
Parameters
CommandEventArgs args

The CommandEventArgs instance containing the event data.

Redo()

Redoes this instance.

Declaration
public virtual void Redo()
Implements

RemoveCommand(ICommand)

Removes the command.

Declaration
public void RemoveCommand(ICommand command)
Parameters
ICommand command

The command.
Implements

Undo(Object)

Undoes this instance.

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

Implements

Events

ActionExecuted

Occurs when either a do or an undo command is executed.

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

Implements

Extension Methods