Undo/Redo is supported by the Tensegrity API for each instance of a VisualGraphView. After an invocation of method VisualGraphView.enableUndoRedo(), automatic undo/redo recording is enabled for the particular instance. From then on, the methods undo() and redo() can be invoked to perform the desired operations. Invoking each method multiple times will advance one more step backwards and forwards respectively in the internally managed undo/redo history. If no further undo or redo operations are possible, the methods will return silently without performing any operations.

For enabling and disabling buttons in the user interface, it is necessary to determine if there are any undo or redo records available. The methods undoPossible and redoPossible return boolean values that indicate whether there are any further undo or redo records left in the internally managed undo/redo history.

Changes that are made interactively (mouse events the view area, operation invocations like cut(), copy(), paste() or deleteSelection) are automatically grouped and can be subsequently undone by simply invoking the undo() or redo() method.