|
1
|
1 package de.mpiwg.itgroup.ismi.util.guiComponents;
|
|
|
2 import javax.faces.FactoryFinder;
|
|
|
3 import javax.faces.application.Application;
|
|
|
4 import javax.faces.application.ApplicationFactory;
|
|
|
5 import javax.faces.application.FacesMessage;
|
|
|
6 import javax.faces.context.ExternalContext;
|
|
|
7 import javax.faces.context.FacesContext;
|
|
|
8 import javax.faces.el.ValueBinding;
|
|
|
9 import javax.servlet.ServletContext;
|
|
|
10 import javax.servlet.http.HttpServletRequest;
|
|
|
11 import javax.servlet.http.HttpSession;
|
|
|
12
|
|
|
13 /**
|
|
|
14 * JSF utilities.
|
|
|
15 */
|
|
|
16 public class FacesUtils {
|
|
|
17 /**
|
|
|
18 * Get servlet context.
|
|
|
19 *
|
|
|
20 * @return the servlet context
|
|
|
21 */
|
|
|
22 public static ServletContext getServletContext() {
|
|
|
23 return (ServletContext) FacesContext.getCurrentInstance().getExternalContext().getContext();
|
|
|
24 }
|
|
|
25
|
|
|
26 public static ExternalContext getExternalContext() {
|
|
|
27 FacesContext fc = FacesContext.getCurrentInstance();
|
|
|
28 return fc.getExternalContext();
|
|
|
29 }
|
|
|
30
|
|
|
31 public static HttpSession getHttpSession(boolean create) {
|
|
|
32 return (HttpSession) FacesContext.getCurrentInstance().
|
|
|
33 getExternalContext().getSession(create);
|
|
|
34 }
|
|
|
35
|
|
|
36 /**
|
|
|
37 * Get managed bean based on the bean name.
|
|
|
38 *
|
|
|
39 * @param beanName the bean name
|
|
|
40 * @return the managed bean associated with the bean name
|
|
|
41 */
|
|
|
42 public static Object getManagedBean(String beanName) {
|
|
|
43
|
|
|
44 return getValueBinding(getJsfEl(beanName)).getValue(FacesContext.getCurrentInstance());
|
|
|
45 }
|
|
|
46
|
|
|
47 /**
|
|
|
48 * Remove the managed bean based on the bean name.
|
|
|
49 *
|
|
|
50 * @param beanName the bean name of the managed bean to be removed
|
|
|
51 */
|
|
|
52 public static void resetManagedBean(String beanName) {
|
|
|
53 getValueBinding(getJsfEl(beanName)).setValue(FacesContext.getCurrentInstance(), null);
|
|
|
54 }
|
|
|
55
|
|
|
56 /**
|
|
|
57 * Store the managed bean inside the session scope.
|
|
|
58 *
|
|
|
59 * @param beanName the name of the managed bean to be stored
|
|
|
60 * @param managedBean the managed bean to be stored
|
|
|
61 */
|
|
|
62 public static void setManagedBeanInSession(String beanName, Object managedBean) {
|
|
|
63 FacesContext.getCurrentInstance().getExternalContext().getSessionMap().put(beanName, managedBean);
|
|
|
64 }
|
|
|
65
|
|
|
66 /**
|
|
|
67 * Get parameter value from request scope.
|
|
|
68 *
|
|
|
69 * @param name the name of the parameter
|
|
|
70 * @return the parameter value
|
|
|
71 */
|
|
|
72 public static String getRequestParameter(String name) {
|
|
|
73 return (String) FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get(name);
|
|
|
74 }
|
|
|
75
|
|
|
76 /**
|
|
|
77 * Add information message.
|
|
|
78 *
|
|
|
79 * @param msg the information message
|
|
|
80 */
|
|
|
81 public static void addInfoMessage(String msg) {
|
|
|
82 addInfoMessage(null, msg);
|
|
|
83 }
|
|
|
84
|
|
|
85 /**
|
|
|
86 * Add information message to a specific client.
|
|
|
87 *
|
|
|
88 * @param clientId the client id
|
|
|
89 * @param msg the information message
|
|
|
90 */
|
|
|
91 public static void addInfoMessage(String clientId, String msg) {
|
|
|
92 FacesContext.getCurrentInstance().addMessage(clientId, new FacesMessage(FacesMessage.SEVERITY_INFO, msg, msg));
|
|
|
93 }
|
|
|
94
|
|
|
95 /**
|
|
|
96 * Add error message.
|
|
|
97 *
|
|
|
98 * @param msg the error message
|
|
|
99 */
|
|
|
100 public static void addErrorMessage(String msg) {
|
|
|
101 addErrorMessage(null, msg);
|
|
|
102 }
|
|
|
103
|
|
|
104 /**
|
|
|
105 * Add error message to a specific client.
|
|
|
106 *
|
|
|
107 * @param clientId the client id
|
|
|
108 * @param msg the error message
|
|
|
109 */
|
|
|
110 public static void addErrorMessage(String clientId, String msg) {
|
|
|
111 FacesContext.getCurrentInstance().addMessage(clientId, new FacesMessage(FacesMessage.SEVERITY_ERROR, msg, msg));
|
|
|
112 }
|
|
|
113
|
|
|
114 private static Application getApplication() {
|
|
|
115 ApplicationFactory appFactory = (ApplicationFactory) FactoryFinder.getFactory(FactoryFinder.APPLICATION_FACTORY);
|
|
|
116 return appFactory.getApplication();
|
|
|
117 }
|
|
|
118
|
|
|
119 private static ValueBinding getValueBinding(String el) {
|
|
|
120 return getApplication().createValueBinding(el);
|
|
|
121 }
|
|
|
122
|
|
|
123 private static HttpServletRequest getServletRequest() {
|
|
|
124 return (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();
|
|
|
125 }
|
|
|
126
|
|
|
127 private static Object getElValue(String el) {
|
|
|
128 return getValueBinding(el).getValue(FacesContext.getCurrentInstance());
|
|
|
129 }
|
|
|
130
|
|
|
131 private static String getJsfEl(String value) {
|
|
|
132 return "#{" + value + "}";
|
|
|
133 }
|
|
|
134 } |
