actionPaste = new ActionPaste(this);
setSelect = new SetSelectState(this);
actionDelete = new ActionDelete(this);
simulate = new Simulate(this);
solveAnalitic = new SolveAnalytic(this);
solveApp = new SolveApprox(this);
// Conti Andrea - undo
undoManager = new GraphUndoManager();
undoProxy = new UndoManagerProxy(undoManager);
editUndo = new ActionUndo(this, undoManager);