Method setViewsEnabled

app/src/main/java/eu/faircode/email/Helper.java:2213–2235

(ViewGroup view, boolean enabled)

    }

    static void setViewsEnabled(ViewGroup view, boolean enabled) {
        for (int i = 0; i < view.getChildCount(); i++) {
            View child = view.getChildAt(i);
            if ("ignore".equals(child.getTag()))
                continue;
            if (child instanceof Spinner ||
                    child instanceof EditText ||
                    child instanceof CheckBox ||
                    child instanceof ImageView /* =ImageButton */ ||
                    child instanceof RadioButton ||
                    (child instanceof Button && "disable".equals(child.getTag()))) {
                if (child instanceof ImageView && ((ImageView) child).getImageTintList() != null)
                    child.setAlpha(enabled ? 1.0f : LOW_LIGHT);
                child.setEnabled(enabled);
            } else if (child instanceof BottomNavigationView) {
                Menu menu = ((BottomNavigationView) child).getMenu();
                menu.setGroupEnabled(0, enabled);
            } else if (child instanceof RecyclerView)
                ; // do nothing
            else if (child instanceof ViewGroup)
                setViewsEnabled((ViewGroup) child, enabled);
        }
    }

    static void hide(View view) {
        view.setPadding(1, 1, 0, 0);