Class HistoryEntryBase

Represents the entry of the changed history of an object.

System.Object

HistoryEntryBase

public abstract class HistoryEntryBase : Object

This class serves as a base for creating history entries that reflect changes made to objects within a diagram.

Designed to be used within undo and redo functionality to track changes chronologically.

protected HistoryEntryBase()

Gets or sets a value indicating whether undo action is activated.

public bool IsUndo { get; set; }

Type	Description
System.Boolean	A System.Boolean indicating if this entry records an undo or redo action. The default value is false.

Gets or sets the next history entry to be undone.

public HistoryEntryBase Next { get; set; }

Type	Description
HistoryEntryBase	A HistoryEntryBase representing the next entry in undo sequence. The default value is null.

Gets or sets the previous history entry to be undone.

public HistoryEntryBase Previous { get; set; }

Type	Description
HistoryEntryBase	A HistoryEntryBase representing the previous entry in undo sequence. The default value is null.

Gets or sets the object storing changed values for a redo operation.

public IDiagramObject RedoObject { get; set; }

Type	Description
IDiagramObject	An IDiagramObject instance representing the state required for redo operation. The default value is null.

Gets or sets the type of entry to be stored.

public HistoryEntryType Type { get; set; }

Type	Description
HistoryEntryType	A HistoryEntryType representing the kind of change (e.g., add, remove, modify).

Gets or sets the object storing changed values for an undo operation.

public IDiagramObject UndoObject { get; set; }

Type	Description
IDiagramObject	An IDiagramObject instance representing the state required for undo operation. The default value is null.