package com.nanometer.smartlab.controller;
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import com.nanometer.smartlab.model.MenuModel;
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import com.nanometer.smartlab.util.FacesUtils;
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import org.apache.commons.lang.StringUtils;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.annotation.Scope;
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import org.springframework.stereotype.Controller;
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import org.springframework.web.context.support.WebApplicationContextUtils;
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import javax.annotation.PostConstruct;
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import javax.annotation.Resource;
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import javax.faces.context.FacesContext;
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import javax.servlet.ServletContext;
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import java.awt.*;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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/**
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* Created by johnny on 15/12/24.
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*/
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@Controller
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@Scope("session")
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public class MenuController extends BaseController {
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@Resource
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private List<MenuModel> menuList;
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private Map<String, MenuModel> menuMap;
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private String currentPage;
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private String fromPage;
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@PostConstruct
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public void init() {
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this.initMenuMap();
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}
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public void initPage() {
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if (this.menuList != null && this.menuList.size() > 0) {
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for (MenuModel menuModel : this.menuList) {
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if (StringUtils.isNotBlank(menuModel.getPage())) {
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this.goToPage(menuModel.getPage());
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return;
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} else {
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if (menuModel.getSubMenu() != null && menuModel.getSubMenu().size() > 0) {
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for (MenuModel subMenuModel : menuModel.getSubMenu()) {
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if (StringUtils.isNotBlank(subMenuModel.getPage())) {
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this.goToPage(menuModel.getSubMenu().get(0).getPage());
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return;
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}
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}
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}
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}
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}
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}
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}
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private void initMenuMap() {
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this.menuMap = new HashMap<String, MenuModel>();
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if (this.menuList != null && this.menuList.size() > 0) {
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for (MenuModel menuModel : this.menuList) {
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if (StringUtils.isNotBlank(menuModel.getPage())) {
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this.menuMap.put(menuModel.getId(), menuModel);
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}
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if (menuModel.getSubMenu() != null && menuModel.getSubMenu().size() > 0) {
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for (MenuModel subMenuModel : menuModel.getSubMenu()) {
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if (StringUtils.isNotBlank(subMenuModel.getPage())) {
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this.menuMap.put(subMenuModel.getId(), subMenuModel);
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}
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}
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}
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}
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}
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}
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private void executeMethod(String clazzName, String methodName, Object... params) {
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if (StringUtils.isBlank(clazzName) || StringUtils.isBlank(methodName)) {
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return;
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}
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ServletContext context = (ServletContext) FacesContext.getCurrentInstance().getExternalContext().getContext();
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ApplicationContext applicationContext = WebApplicationContextUtils.getWebApplicationContext(context);
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Object object = applicationContext.getBean(clazzName);
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if (object != null) {
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Class clazz = object.getClass();
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try {
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Method method = null;
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if (params != null && params.length > 0) {
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Class[] paramsClazzs = new Class[params.length];
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for (int i = 0; i < params.length; i ++) {
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paramsClazzs[i] = params[i].getClass();
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}
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method = clazz.getDeclaredMethod(methodName, paramsClazzs);
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method.invoke(object, params);
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} else {
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method = clazz.getDeclaredMethod(methodName);
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method.invoke(object);
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}
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} catch (NoSuchMethodException e) {
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e.printStackTrace();
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} catch (InvocationTargetException e) {
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e.printStackTrace();
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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}
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}
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}
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public void goToPage(MenuModel menuModel) {
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if (menuModel != null) {
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this.fromPage = null;
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this.executeMethod(menuModel.getInitClazz(), menuModel.getInitMethod());
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this.setCurrentPage(menuModel.getPage());
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}
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}
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public void goToPage(String id) {
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if (StringUtils.isBlank(id)) {
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return;
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}
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this.fromPage = null;
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MenuModel menuModel = this.menuMap.get(id);
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this.goToPage(menuModel);
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}
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public void goToPage(String id, String fromPage) {
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this.goToPage(id);
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this.fromPage = fromPage;
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}
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public void goToPage(String id, String fromPage, String initClazz, String initMethod, Object... params) {
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MenuModel menuModel = this.menuMap.get(id);
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if (menuModel != null) {
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this.executeMethod(initClazz, initMethod, params);
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this.setCurrentPage(menuModel.getPage());
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this.fromPage = fromPage;
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}
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}
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public void backToPage() {
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if (StringUtils.isNotBlank(this.fromPage)) {
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MenuModel menuModel = this.menuMap.get(this.fromPage);
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if (menuModel != null) {
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this.setCurrentPage(menuModel.getPage());
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this.fromPage = null;
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}
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}
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}
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public boolean isBackBtnDisp() {
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if (StringUtils.isNotBlank(this.fromPage)) {
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return true;
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}
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return false;
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}
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public void derectURL(String url){
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FacesUtils.js("openwin('" + url + "')");
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}
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public List<MenuModel> getMenuList() {
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return menuList;
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}
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public String getCurrentPage() {
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if (StringUtils.isBlank(currentPage)) {
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this.initPage();
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}
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return currentPage;
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}
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public void setCurrentPage(String currentPage) {
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this.currentPage = currentPage;
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}
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public boolean isDispRootMenu(MenuModel menuModel) {
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if (menuModel.getSubMenu() != null && menuModel.getSubMenu().size() > 0) {
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for (MenuModel model : menuModel.getSubMenu()) {
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if (this.isPermitted(model.getPrivilegeCode())) {
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return true;
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}
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}
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}
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return false;
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}
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}
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