Java tutorial
/* * eGov SmartCity eGovernance suite aims to improve the internal efficiency,transparency, * accountability and the service delivery of the government organizations. * * Copyright (C) 2018 eGovernments Foundation * * The updated version of eGov suite of products as by eGovernments Foundation * is available at http://www.egovernments.org * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see http://www.gnu.org/licenses/ or * http://www.gnu.org/licenses/gpl.html . * * In addition to the terms of the GPL license to be adhered to in using this * program, the following additional terms are to be complied with: * * 1) All versions of this program, verbatim or modified must carry this * Legal Notice. * Further, all user interfaces, including but not limited to citizen facing interfaces, * Urban Local Bodies interfaces, dashboards, mobile applications, of the program and any * derived works should carry eGovernments Foundation logo on the top right corner. * * For the logo, please refer http://egovernments.org/html/logo/egov_logo.png. * For any further queries on attribution, including queries on brand guidelines, * please contact contact@egovernments.org * * 2) Any misrepresentation of the origin of the material is prohibited. It * is required that all modified versions of this material be marked in * reasonable ways as different from the original version. * * 3) This license does not grant any rights to any user of the program * with regards to rights under trademark law for use of the trade names * or trademarks of eGovernments Foundation. * * In case of any queries, you can reach eGovernments Foundation at contact@egovernments.org. * */ package org.egov.infra.web.support.ui.menu; import org.egov.infra.admin.common.entity.MenuLink; import org.egov.infra.admin.master.entity.User; import org.egov.infra.admin.master.service.ModuleService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import java.util.Collections; import java.util.LinkedList; import java.util.List; import static org.apache.commons.lang3.StringUtils.EMPTY; import static org.apache.commons.lang3.StringUtils.SPACE; import static org.egov.infra.web.support.ui.menu.Menu.APP_MENU_ICON; import static org.egov.infra.web.support.ui.menu.Menu.APP_MENU_MAIN_ICON; import static org.egov.infra.web.support.ui.menu.Menu.FAV_MENU_ICON; import static org.egov.infra.web.support.ui.menu.Menu.NAVIGATION_NONE; import static org.egov.infra.web.support.ui.menu.Menu.SELFSERVICE_MENU_ICON; @Service @Transactional(readOnly = true) public class ApplicationMenuRenderingService { public static final String APP_MENU_TITLE = "Applications"; public static final String FAV_MENU_TITLE = "Favourites"; public static final String SELF_SERVICE_MENU_TITLE = "Self Service"; public static final String SELF_SERVICE_MODULE_NAME = "EmployeeSelfService"; @Autowired private ModuleService moduleService; public Menu getApplicationMenuForUser(User user) { List<MenuLink> menuLinks = moduleService.getMenuLinksForRoles(user.getRoles()); Menu menu = new Menu(); menu.setId("menuID"); menu.setTitle(SPACE); menu.setIcon(APP_MENU_MAIN_ICON); menu.setItems(new LinkedList<>()); List<MenuLink> favourites = moduleService.getUserFavouritesMenuLinks(user.getId()); createApplicationMenu(menuLinks, favourites, user, menu); List<MenuLink> essMenus = extractSelfServiceMenus(menuLinks, user); if (!essMenus.isEmpty()) createSelfServiceMenu(essMenus, menu); createFavouritesMenu(favourites, menu); return menu; } private List<MenuLink> extractSelfServiceMenus(List<MenuLink> menuLinks, User user) { return menuLinks.parallelStream().filter(menuLink -> SELF_SERVICE_MODULE_NAME.equals(menuLink.getName())) .findFirst() .map(menuLink -> moduleService.getMenuLinksByParentModuleId(menuLink.getId(), user.getId())) .orElse(Collections.emptyList()); } private void createApplicationMenu(List<MenuLink> menuLinks, List<MenuLink> favourites, User user, Menu parentMenu) { Menu applicationRootMenu = Menu.MenuBuilder.aMenu().withId("apps").withName(APP_MENU_TITLE) .withTitle(APP_MENU_TITLE).withLink(NAVIGATION_NONE).withIcon(APP_MENU_ICON) .withItems(new LinkedList<>()).build(); Menu applicationMenu = Menu.MenuBuilder.aMenu().withTitle(APP_MENU_TITLE).withIcon(EMPTY) .withItems(new LinkedList<>()).build(); applicationRootMenu.getItems().add(applicationMenu); parentMenu.getItems().add(applicationRootMenu); menuLinks.stream().filter(menuLink -> !SELF_SERVICE_MODULE_NAME.equals(menuLink.getName())) .forEach(menuLink -> createSubmenuRoot(menuLink.getId(), menuLink.getDisplayName(), favourites, user, applicationMenu)); } private void createSelfServiceMenu(List<MenuLink> selfServices, Menu parentMenu) { Menu selfServiceRootMenu = Menu.MenuBuilder.aMenu().withId("ssMenu").withName(SELF_SERVICE_MENU_TITLE) .withTitle(SELF_SERVICE_MENU_TITLE).withLink(NAVIGATION_NONE).withIcon(SELFSERVICE_MENU_ICON) .withItems(new LinkedList<>()).build(); Menu selfServiceMenu = Menu.MenuBuilder.aMenu().withTitle(SELF_SERVICE_MENU_TITLE).withIcon(EMPTY) .withItems(new LinkedList<>()).build(); selfServiceRootMenu.getItems().add(selfServiceMenu); parentMenu.getItems().add(selfServiceRootMenu); selfServices.stream().forEach(selfService -> { Menu appLinks = new Menu(); appLinks.setName(selfService.getName()); appLinks.setLink("/" + selfService.getContextRoot() + selfService.getUrl()); selfServiceMenu.getItems().add(appLinks); }); } private void createFavouritesMenu(List<MenuLink> favourites, Menu parentMenu) { Menu favouritesRootMenu = Menu.MenuBuilder.aMenu().withId("favMenu").withName(FAV_MENU_TITLE) .withTitle(FAV_MENU_TITLE).withLink(NAVIGATION_NONE).withIcon(FAV_MENU_ICON) .withItems(new LinkedList<>()).build(); Menu favouritesMenu = Menu.MenuBuilder.aMenu().withTitle(FAV_MENU_TITLE).withIcon(EMPTY) .withItems(new LinkedList<>()).build(); favouritesRootMenu.getItems().add(favouritesMenu); parentMenu.getItems().add(favouritesRootMenu); favourites.stream().forEach(favourite -> { Menu appLink = Menu.MenuBuilder.aMenu().withId("fav-" + favourite.getId()).withName(favourite.getName()) .withLink("/" + favourite.getUrl()).withIcon("fa fa-times-circle remove-favourite").build(); favouritesMenu.getItems().add(appLink); }); } private void createSubmenuRoot(Long menuId, String menuName, List<MenuLink> favourites, User user, Menu parentMenu) { List<MenuLink> submodules = moduleService.getMenuLinksByParentModuleId(menuId, user.getId()); if (!submodules.isEmpty()) { Menu submenuRoot = Menu.MenuBuilder.aMenu().withId(String.valueOf(menuId)).withName(menuName) .withTitle(menuName).withLink(NAVIGATION_NONE).withIcon(EMPTY).withItems(new LinkedList<>()) .build(); Menu submenu = Menu.MenuBuilder.aMenu().withTitle(menuName).withIcon(EMPTY) .withItems(new LinkedList<>()).build(); submenuRoot.getItems().add(submenu); parentMenu.getItems().add(submenuRoot); submodules.stream().forEach(submodule -> createApplicationLink(submodule, favourites, user, submenu)); } } private void createApplicationLink(MenuLink childMenuLink, List<MenuLink> favourites, User user, Menu parentMenu) { if (childMenuLink.isEnabled()) { Menu appLink = Menu.MenuBuilder.aMenu().withId("id-" + childMenuLink.getId()) .withName(childMenuLink.getName()) .withLink("/" + childMenuLink.getContextRoot() + childMenuLink.getUrl()) .withIcon(FAV_MENU_ICON + (favourites.contains(childMenuLink) ? " added-as-fav" : " add-to-favourites")) .build(); parentMenu.getItems().add(appLink); } else { createSubmenuRoot(childMenuLink.getId(), childMenuLink.getName(), favourites, user, parentMenu); } } }