private void execUndoInformation(boolean undo) {
UndoInformation undoInfo = undoStack.get(undo);
if (undoInfo != null) {
setRectangle(getRectangle().add(undoInfo.getDiffRectangle(getGridSize(), undo)));
Stickables.applyChanges(undoInfo.getStickableMoves(undo), null);
// setAdditionalAttributes(undoInfo.getAdditionalAttributes(undo)); //Issue 217: of all
// OldGridElements only the Relation uses additional attributes and in that case they must not
// be set because of zooming errors (see Issue 217)
}
}
@Override
public void mergeUndoDrag() {
UndoInformation undoInfoA = undoStack.remove();
UndoInformation undoInfoB = undoStack.remove();
undoStack.add(undoInfoA.merge(undoInfoB));
}