/**
* If the last diagram tab and it's undo history (=controller) is empty return true, else return
* false
*/
private boolean lastTabIsEmpty() {
if (!this.diagrams.isEmpty()) {
DiagramHandler lastDiagram = this.diagrams.get(diagrams.size() - 1);
if (lastDiagram.getController().isEmpty()
&& lastDiagram.getDrawPanel().getAllEntities().isEmpty()) {
return true;
}
}
return false;
}
