getUndoStack

returns the stack of stored undo user actions

UndoRedoAction[] getUndoStack();

UndoRedoAction[]

an array of the undo user actions

Example

var stack = gantt.getUndoStack();

Related samples

Undo/Redo changes in Gantt

Details

This method is defined in the undo extension, so you need to enable the undo plugin. Read the details in the Undo/Redo Functionality article.

The returned stack is an array of the undo user actions. Each user action contains a set of commands. A command is an object with the following attributes:

type - (string) the type of a command: "add/remove/update"
entity - (string) the type of the object which was changed: "task" or "link"
value - (object) the changed task/link object
oldValue - (object) the task/link object before changes

Have a look at the example below:

The getUndoStack() method returns a stack with 2 undo user actions. The first action contains 3 commands, while the second one has 1 command.