public void onCategoriesSelected(List<CategoryState> states) {
mState.setCategoryStates(states);
mAdapter.swapData(new ArrayList<>(states));
if (areAllCategoriesChosen()) {
handleButton();
handleViews(3);
} else {
handleViews(2);
}
}
private void handleViews(int level) {
switch (level) {
case 0:
mPeriodButton.setEnabled(false);
case 1:
mAdapter.swapData(null);
case 2:
mButton.hide(true);
break;
case 3:
mButton.show(true);
}
}