Java tutorial
/* * [y] hybris Platform * * Copyright (c) 2000-2013 hybris AG * All rights reserved. * * This software is the confidential and proprietary information of hybris * ("Confidential Information"). You shall not disclose such Confidential * Information and shall use it only in accordance with the terms of the * license agreement you entered into with hybris. * * */ package com.acc.storefront.interceptors.beforeview; import de.hybris.platform.acceleratorcms.data.CmsPageRequestContextData; import de.hybris.platform.acceleratorcms.data.RequestContextData; import de.hybris.platform.acceleratorcms.services.CMSPageContextService; import de.hybris.platform.acceleratorcms.utils.SpringHelper; import de.hybris.platform.acceleratorstorefrontcommons.controllers.pages.AbstractPageController; import de.hybris.platform.cms2.jalo.preview.PreviewData; import de.hybris.platform.cms2.model.pages.AbstractPageModel; import de.hybris.platform.cms2.model.pages.ContentPageModel; import de.hybris.platform.cms2.model.pages.PageTemplateModel; import de.hybris.platform.cms2.model.preview.CMSPreviewTicketModel; import de.hybris.platform.cms2.model.preview.PreviewDataModel; import de.hybris.platform.cms2.servicelayer.data.RestrictionData; import de.hybris.platform.cms2.servicelayer.services.CMSPageService; import de.hybris.platform.cms2.servicelayer.services.CMSPreviewService; import de.hybris.platform.cms2.servicelayer.services.CMSSiteService; import de.hybris.platform.jalo.c2l.LocalizableItem; import de.hybris.platform.servicelayer.model.AbstractItemModel; import de.hybris.platform.servicelayer.session.SessionService; import com.acc.storefront.filters.cms.CMSSiteFilter; import com.acc.storefront.interceptors.BeforeViewHandler; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.log4j.Logger; import org.springframework.core.convert.converter.Converter; import org.springframework.web.servlet.ModelAndView; /** * Filter to load the appropriate Cms page slots into the model */ public class CmsPageBeforeViewHandler implements BeforeViewHandler { private static final Logger LOG = Logger.getLogger(CmsPageBeforeViewHandler.class); private static final String CSS_CODE_PREFIX = "page-"; private static final String CSS_LABEL_PREFIX = "pageLabel-"; private static final String CSS_TYPE_PREFIX = "pageType-"; private static final String CSS_TEMPLATE_PREFIX = "template-"; @Resource(name = "cmsSiteService") private CMSSiteService cmsSiteService; @Resource(name = "cmsPageService") private CMSPageService cmsPageService; @Resource(name = "cmsPreviewService") private CMSPreviewService cmsPreviewService; @Resource(name = "sessionService") private SessionService sessionService; @Resource(name = "cmsPageContextService") private CMSPageContextService cmsPageContextService; @Resource(name = "requestContextRestrictionConverter") private Converter<RequestContextData, RestrictionData> requestContextRestrictionConverter; @Override public void beforeView(final HttpServletRequest request, final HttpServletResponse response, final ModelAndView modelAndView) { modelAndView.addObject("cmsSite", cmsSiteService.getCurrentSite()); // Look for the page in the model final AbstractPageModel page = updateCmsPageInModelAndView(request, modelAndView); modelAndView.addObject("pageBodyCssClasses", buildCssClasses(page)); // Create the restriction data final RequestContextData requestContextData = SpringHelper.getSpringBean(request, "requestContextData", RequestContextData.class, true); final RestrictionData restrictionData = requestContextRestrictionConverter.convert(requestContextData); // Initialise CMS support final CmsPageRequestContextData cmsPageRequestContextData = cmsPageContextService .updateCmsPageContextForPage(request, page, restrictionData); modelAndView.addObject("cmsPageRequestContextData", cmsPageRequestContextData); sessionService.setAttribute(LocalizableItem.LANGUAGE_FALLBACK_ENABLED, Boolean.TRUE); sessionService.setAttribute(AbstractItemModel.LANGUAGE_FALLBACK_ENABLED_SERVICE_LAYER, Boolean.TRUE); } protected AbstractPageModel updateCmsPageInModelAndView(final HttpServletRequest request, final ModelAndView modelAndView) { // Look for the page in the model final AbstractPageModel requestedPage = (AbstractPageModel) modelAndView.getModel() .get(AbstractPageController.CMS_PAGE_MODEL); if (requestedPage != null) { final AbstractPageModel previewPage = lookupPreviewPage(request); if (previewPage != null && !previewPage.equals(requestedPage)) { // Have a preview page that overrides the current page // Check that the preview page is the same type as the expected page if (!requestedPage.getClass().isInstance(previewPage)) { LOG.error("Preview page is of type [" + previewPage.getClass().getName() + "] expected page of type [" + requestedPage.getClass().getName() + "]"); } else { // Push the preview page into the model LOG.info("Replaced page [" + requestedPage + "] with preview page [" + previewPage + "]"); modelAndView.addObject(AbstractPageController.CMS_PAGE_MODEL, previewPage); // Check to see if we are using the default view for the page if (modelAndView.getViewName() != null && modelAndView.getViewName().equals(getViewForPage(requestedPage))) { final String viewForPreviewPage = getViewForPage(previewPage); if (viewForPreviewPage != null && !viewForPreviewPage.equals(modelAndView.getViewName())) { // Change the view name LOG.info("Changing view from [" + modelAndView.getViewName() + "] to preview view [" + viewForPreviewPage + "]"); modelAndView.setViewName(viewForPreviewPage); } } return previewPage; } } } return requestedPage; } protected String buildCssClasses(final AbstractPageModel page) { if (page == null) { return ""; } final String regEx = "[^a-zA-Z0-9-]"; final StringBuilder cssClasses = new StringBuilder(); cssClasses.append(CSS_CODE_PREFIX).append(page.getUid().replaceAll(regEx, "-")); cssClasses.append(' '); cssClasses.append(CSS_TYPE_PREFIX).append(page.getTypeCode().replaceAll(regEx, "-")); cssClasses.append(' '); cssClasses.append(CSS_TEMPLATE_PREFIX).append(getViewForPage(page).replaceAll(regEx, "-")); cssClasses.append(' '); if (ContentPageModel.class.equals(page.getClass())) { final ContentPageModel contentPage = (ContentPageModel) page; if (contentPage.getLabel() != null) { cssClasses.append(CSS_LABEL_PREFIX).append(contentPage.getLabel().replaceAll(regEx, "-")); } } return cssClasses.toString(); } /** * Retrieves a preview ticket, if available and retrieves the preview page from the {@link PreviewData} * * @param request * @return preview page */ protected AbstractPageModel lookupPreviewPage(final HttpServletRequest request) { final String previewTicketId = request.getParameter(CMSSiteFilter.PREVIEW_TICKET_ID_PARAM); if (previewTicketId != null && !previewTicketId.isEmpty()) { final CMSPreviewTicketModel previewTicket = cmsPreviewService.getPreviewTicket(previewTicketId); if (previewTicket != null) { final PreviewDataModel previewData = previewTicket.getPreviewData(); if (previewData != null) { return previewData.getPage(); } } } return null; } /** * Returns ths view name for the page by retrieving the frontendTemplateName from the masterTemplate of the page * * @param page * @return view name or null, if the view name cannot retrieved from the masterTemplate */ protected String getViewForPage(final AbstractPageModel page) { if (page != null) { final PageTemplateModel masterTemplate = page.getMasterTemplate(); if (masterTemplate != null) { final String targetPage = cmsPageService.getFrontendTemplateName(masterTemplate); if (targetPage != null && !targetPage.isEmpty()) { return AbstractPageController.PAGE_ROOT + targetPage; } } } return null; } }