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ITextUndoHistory Interface

Definition

Contains undo transactions.

public interface class ITextUndoHistory : Microsoft::VisualStudio::Utilities::IPropertyOwner
public interface class ITextUndoHistory : Microsoft::VisualStudio::Utilities::IPropertyOwner
__interface ITextUndoHistory : Microsoft::VisualStudio::Utilities::IPropertyOwner
public interface ITextUndoHistory : Microsoft.VisualStudio.Utilities.IPropertyOwner
type ITextUndoHistory = interface
    interface IPropertyOwner
Public Interface ITextUndoHistory
Implements IPropertyOwner
Implements

Remarks

Typically only one undo transaction history at a time is available to the user.

Properties

CanRedo

Determines whether a single redo is possible.

CanUndo

Determines whether a single undo is possible.

CurrentTransaction

Gets the current UndoTransaction in progress.

LastRedoTransaction

Gets the most recent (top) item of the RedoStack, or null if the stack is empty.

LastUndoTransaction

Gets the most recent (top) item of the UndoStack, or null if the stack is empty.

Properties

The collection of properties controlled by the property owner.

(Inherited from IPropertyOwner)
RedoDescription

Gets the description of the most recent visible redo ITextUndoTransaction.

RedoStack

The redo stack for this history. It does not include any currently open or undo transactions.

State

Gets the current state of the UndoHistory.

UndoDescription

Gets the description of the most recent visible undo ITextUndoTransaction.

UndoStack

The undo stack for this history. It does not include any currently open or redo transactions.

Methods

CreateTransaction(String)

Creates a new transaction, nests it in the previously current transaction, and marks it current.

Redo(Int32)

Performs the specified number of redo operation and places the transactions on the undo stack.

Undo(Int32)

Performs the specified number of undo operations and places the transactions on the redo stack.

Events

UndoRedoHappened

Notifies consumers when an undo or a redo has happened on this history.

UndoTransactionCompleted

Notifies consumers when an ITextUndoTransaction is completed and added to the UndoStack.

Applies to