protected ActionForward processLayout(
      ActionMapping mapping, HttpServletRequest request, HttpServletResponse response, long plid)
      throws Exception {

    HttpSession session = request.getSession();

    ThemeDisplay themeDisplay = (ThemeDisplay) request.getAttribute(WebKeys.THEME_DISPLAY);

    try {
      Layout layout = themeDisplay.getLayout();

      boolean resetLayout =
          ParamUtil.getBoolean(request, "p_l_reset", PropsValues.LAYOUT_DEFAULT_P_L_RESET);

      String portletId = ParamUtil.getString(request, "p_p_id");

      Layout previousLayout = (Layout) session.getAttribute(WebKeys.PREVIOUS_LAYOUT);

      if ((previousLayout == null) || (layout.getPlid() != previousLayout.getPlid())) {

        session.setAttribute(WebKeys.PREVIOUS_LAYOUT, layout);

        if (themeDisplay.isSignedIn()
            && PropsValues.AUDIT_MESSAGE_COM_LIFERAY_PORTAL_MODEL_LAYOUT_VIEW
            && MessageBusUtil.hasMessageListener(DestinationNames.AUDIT)) {

          User user = themeDisplay.getUser();

          AuditMessage auditMessage =
              new AuditMessage(
                  ActionKeys.VIEW,
                  user.getCompanyId(),
                  user.getUserId(),
                  user.getFullName(),
                  Layout.class.getName(),
                  String.valueOf(layout.getPlid()));

          AuditRouterUtil.route(auditMessage);
        }
      }

      if (!PropsValues.TCK_URL
          && resetLayout
          && (Validator.isNull(portletId)
              || ((previousLayout != null) && (layout.getPlid() != previousLayout.getPlid())))) {

        // Always clear render parameters on a layout url, but do not
        // clear on portlet urls invoked on the same layout

        RenderParametersPool.clear(request, plid);
      }

      if (themeDisplay.isLifecycleAction()) {
        Portlet portlet = processPortletRequest(request, response, PortletRequest.ACTION_PHASE);

        if (portlet != null) {
          ActionResponseImpl actionResponseImpl =
              (ActionResponseImpl) request.getAttribute(JavaConstants.JAVAX_PORTLET_RESPONSE);

          String redirectLocation = actionResponseImpl.getRedirectLocation();

          if (Validator.isNotNull(redirectLocation)) {
            response.sendRedirect(redirectLocation);

            return null;
          }

          if (portlet.isActionURLRedirect()) {
            redirectActionURL(request, response, actionResponseImpl, portlet);

            return null;
          }
        }
      } else if (themeDisplay.isLifecycleRender()) {
        processPortletRequest(request, response, PortletRequest.RENDER_PHASE);
      }

      if (themeDisplay.isLifecycleResource()) {
        processPortletRequest(request, response, PortletRequest.RESOURCE_PHASE);

        return null;
      } else {
        if (response.isCommitted()) {
          return null;
        }

        if (layout != null) {

          // Include layout content before the page loads because
          // portlets on the page can set the page title and page
          // subtitle

          includeLayoutContent(request, response, themeDisplay, layout);

          if (themeDisplay.isStateExclusive()) {
            renderExclusive(request, response, themeDisplay);

            return null;
          }
        }

        return mapping.findForward("portal.layout");
      }
    } catch (Exception e) {
      PortalUtil.sendError(e, request, response);

      return null;
    } finally {
      if (!ServerDetector.isResin()) {
        PortletRequest portletRequest =
            (PortletRequest) request.getAttribute(JavaConstants.JAVAX_PORTLET_REQUEST);

        if (portletRequest != null) {
          PortletRequestImpl portletRequestImpl = (PortletRequestImpl) portletRequest;

          portletRequestImpl.cleanUp();
        }
      }
    }
  }
  protected void processEvent(
      PortletRequestImpl portletRequestImpl,
      StateAwareResponseImpl stateAwareResponseImpl,
      List<LayoutTypePortlet> layoutTypePortlets,
      LayoutTypePortlet layoutTypePortlet,
      Portlet portlet,
      Event event)
      throws Exception {

    HttpServletRequest request = portletRequestImpl.getHttpServletRequest();
    HttpServletResponse response = stateAwareResponseImpl.getHttpServletResponse();
    HttpSession session = request.getSession();

    String portletId = portlet.getPortletId();

    ServletContext servletContext = (ServletContext) request.getAttribute(WebKeys.CTX);

    InvokerPortlet invokerPortlet = PortletInstanceFactoryUtil.create(portlet, servletContext);

    PortletConfig portletConfig = PortletConfigFactoryUtil.create(portlet, servletContext);
    PortletContext portletContext = portletConfig.getPortletContext();

    WindowState windowState = null;

    if (layoutTypePortlet.hasStateMaxPortletId(portletId)) {
      windowState = WindowState.MAXIMIZED;
    } else if (layoutTypePortlet.hasStateMinPortletId(portletId)) {
      windowState = WindowState.MINIMIZED;
    } else {
      windowState = WindowState.NORMAL;
    }

    PortletMode portletMode = null;

    if (layoutTypePortlet.hasModeAboutPortletId(portletId)) {
      portletMode = LiferayPortletMode.ABOUT;
    } else if (layoutTypePortlet.hasModeConfigPortletId(portletId)) {
      portletMode = LiferayPortletMode.CONFIG;
    } else if (layoutTypePortlet.hasModeEditPortletId(portletId)) {
      portletMode = PortletMode.EDIT;
    } else if (layoutTypePortlet.hasModeEditDefaultsPortletId(portletId)) {
      portletMode = LiferayPortletMode.EDIT_DEFAULTS;
    } else if (layoutTypePortlet.hasModeEditGuestPortletId(portletId)) {
      portletMode = LiferayPortletMode.EDIT_GUEST;
    } else if (layoutTypePortlet.hasModeHelpPortletId(portletId)) {
      portletMode = PortletMode.HELP;
    } else if (layoutTypePortlet.hasModePreviewPortletId(portletId)) {
      portletMode = LiferayPortletMode.PREVIEW;
    } else if (layoutTypePortlet.hasModePrintPortletId(portletId)) {
      portletMode = LiferayPortletMode.PRINT;
    } else {
      portletMode = PortletMode.VIEW;
    }

    User user = stateAwareResponseImpl.getUser();
    Layout layout = stateAwareResponseImpl.getLayout();

    PortletPreferences portletPreferences = portletRequestImpl.getPreferencesImpl();

    EventRequestImpl eventRequestImpl =
        EventRequestFactory.create(
            request,
            portlet,
            invokerPortlet,
            portletContext,
            windowState,
            portletMode,
            portletPreferences,
            layoutTypePortlet.getLayout().getPlid());

    eventRequestImpl.setEvent(serializeEvent(event, invokerPortlet.getPortletClassLoader()));

    EventResponseImpl eventResponseImpl =
        EventResponseFactory.create(eventRequestImpl, response, portletId, user, layout);

    eventRequestImpl.defineObjects(portletConfig, eventResponseImpl);

    try {
      try {
        InvokerPortletImpl.clearResponse(
            session,
            layout.getPrimaryKey(),
            portletId,
            LanguageUtil.getLanguageId(eventRequestImpl));

        invokerPortlet.processEvent(eventRequestImpl, eventResponseImpl);

        if (eventResponseImpl.isCalledSetRenderParameter()) {
          Map<String, String[]> renderParameterMap = new HashMap<String, String[]>();

          MapUtil.copy(eventResponseImpl.getRenderParameterMap(), renderParameterMap);

          RenderParametersPool.put(request, layout.getPlid(), portletId, renderParameterMap);
        }
      } catch (UnavailableException ue) {
        throw ue;
      }

      processEvents(eventRequestImpl, eventResponseImpl, layoutTypePortlets);
    } finally {
      eventRequestImpl.cleanUp();
    }
  }