Class HistoryManager

The actions can be recorded into the history manager, such that the undo and redo operations can be performed.

Inheritance
System.Object
EJTagHelper
HistoryManager
Inherited Members
System.Object.ToString()
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Namespace: Syncfusion.JavaScript.DataVisualization.Models.Diagram
Assembly: Syncfusion.EJ.dll
Syntax
public class HistoryManager : EJTagHelper

Constructors

HistoryManager()

Declaration
public HistoryManager()

Properties

Redo

Gets or sets what should be happened while trying to redo a custom change

Declaration
[JsonProperty("redo")]
public string Redo { get; set; }
Property Value
Type Description
System.String

null
Examples
           DiagramProperties Model = new DiagramProperties();
           Model.HistoryManager.Undo = "customUndoRedo";
           Model.HistoryManager.Redo = "customUndoRedo";
   <script> 
       //Method to handle the custom action
       function customUndoRedo(args) {
       var diagram = $("#diagram").ejDiagram("instance");
       var Node = args.object;
       var CurrentState = Node.empInfo;
       //Resets the state
       Node.empInfo = args.prevState;
       //Saves the previous state
       args.prevState = CurrentState;
   } 
   </script>

StackLimit

Declaration
[JsonProperty("stackLimit")]
public int StackLimit { get; set; }
Property Value
Type Description
System.Int32

Undo

Gets or sets what should be happened while trying to revert a custom change

Declaration
[JsonProperty("undo")]
public string Undo { get; set; }
Property Value
Type Description
System.String

null
Examples
           DiagramProperties Model = new DiagramProperties();
           Model.HistoryManager.Undo = "customUndoRedo";
           Model.HistoryManager.Redo = "customUndoRedo";
   <script> 
       //Method to handle the custom action
       function customUndoRedo(args) {
       var diagram = $("#diagram").ejDiagram("instance");
       var Node = args.object;
       var CurrentState = Node.empInfo;
       //Resets the state
       Node.empInfo = args.prevState;
       //Saves the previous state
       args.prevState = CurrentState;
   } 
   </script>