[apps/settings] Between two 'didEnterResponderChain', the exam mode page

might change the number of rows/the displayed messages. We then have to
re-layout the SelectableViewWithMessages to set the right frame to the
SelectableTableView.

apps/settings/sub_menu/exam_mode_controller.cpp

@@ -35,7 +35,7 @@ void ExamModeController::didEnterResponderChain(Responder * previousFirstRespond
    * reload the selection as the number of rows might have also changed. We
    * force to reload the entire data because they might have changed. */
   selectCellAtLocation(0, initialSelectedRow());
-  m_selectableTableView.reloadData();
+  m_contentView.reload();
   // We add a message when the mode exam is on
   if (GlobalPreferences::sharedGlobalPreferences()->isInExamMode()) {
     I18n::Message deactivateMessages[] = {I18n::Message::ToDeactivateExamMode1, I18n::Message::ToDeactivateExamMode2, I18n::Message::ToDeactivateExamMode3};

apps/settings/sub_menu/selectable_view_with_messages.cpp

@@ -32,6 +32,11 @@ void SelectableViewWithMessages::setMessages(I18n::Message * m, int numberOfMess
   layoutSubviews();
 }
 
+void SelectableViewWithMessages::reload() {
+  m_selectableTableView->reloadData();
+  layoutSubviews();
+}
+
 View * SelectableViewWithMessages::subviewAtIndex(int index) {
   assert(index >= 0 && index < numberOfSubviews());
   if (index == 0) {

apps/settings/sub_menu/selectable_view_with_messages.h

@@ -11,6 +11,7 @@ public:
   SelectableViewWithMessages(SelectableTableView * selectableTableView);
   void drawRect(KDContext * ctx, KDRect rect) const override;
   void setMessages(I18n::Message * messages, int numberOfMessages);
+  void reload();
 private:
   int numberOfSubviews() const override { return 1 + m_numberOfMessages; }
   View * subviewAtIndex(int index) override;