Methods and Properties Reference for Merging Undo Redo Operations

Topic Overview

Purpose

This topic lists the available methods and properties related to the merging of undo/redo operations.

In this topic

This topic contains the following sections:

Methods and Properties Reference for Merging Undo/Redo Operations
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Methods and Properties Reference for Merging Undo/Redo Operations

Introduction

In some cases, you may want to have the previously added undo operation to be updated with information about the new change. For example - while typing in a text control or while dragging the thumb of a Slider control, then you may want to merge the related changes into one.

This merging operation is performed automatically by the framework and it is enabled by default.

You can disable merging or configure the amount of time since the last operation after which merging will not be performed.

Methods reference summary

The following table summarizes the purpose and functionality of the methods related with the merging of undo/redo operations.

Method	Description
PreventMerge	Ensures that the next UndoUnit that is recorded is not allowed to merge with the last operation on the UndoHistory.

Properties reference summary

The following table summarizes the purpose and functionality of the properties related with the merging of undo/redo operations.

Property	Description
AllowMerging	Returns or sets a boolean value indicating if the merging of related changes is allowed.
MergeTimeout	Indicates the maximum amount of time since the last operation within which a merge operation may be considered. The default value is 0 and this indicates that there is no timeout.

Related Content

Topics

The following topics provide additional information related to this topic.

Topic	Purpose
Methods Reference for Adding UndoUnits to the Undo History	This topic lists the available methods for adding an UndoUnit derived class object to the undo history.
Methods Reference for Removing UndoUnits from the History	This topic lists the available methods for removing the UndoUnit instances from the undo/redo history.
Methods Reference for Registering and Unregistering Objects	This topic lists the methods that register/unregister a specific object to an UndoManager instance.
Methods Reference for Performing Undo Redo Operations	This topic lists the available methods for performing undo and redo operations.
Methods and Properties Reference for Performing Transactions	This topic lists the available methods and properties for performing undo/redo transactions.
Methods Reference for Suspending and Resuming Saving History	This topic lists the available methods for suspending and resuming the saving of the undo/redo operations in history.
Methods and Properties Reference for Creating Custom UndoUnit	This topic lists the available methods and properties related to creating of a custom UndoUnit in the Infragistics Undo/Redo Framework™.

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