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1
18 package org.apache.beehive.netui.script.common;
19
20 import java.util.Map  ;
21 import java.util.Collections ;
22 import javax.servlet.ServletRequest ;
23 import javax.servlet.ServletResponse ;
24 import javax.servlet.ServletContext ;
25 import javax.servlet.http.HttpServletRequest ;
26 import javax.servlet.http.HttpServletResponse ;
27 import javax.servlet.jsp.JspContext ;
28 import javax.servlet.jsp.PageContext ;
29 import javax.servlet.jsp.el.VariableResolver ;
30
31 import org.apache.beehive.netui.pageflow.FacesBackingBean;
32 import org.apache.beehive.netui.pageflow.GlobalApp;
33 import org.apache.beehive.netui.pageflow.PageFlowController;
34 import org.apache.beehive.netui.pageflow.PageFlowUtils;
35 import org.apache.beehive.netui.pageflow.SharedFlowController;
36 import org.apache.beehive.netui.pageflow.internal.AnyBeanActionForm;
37 import org.apache.beehive.netui.pageflow.internal.InternalUtils;
38 import org.apache.beehive.netui.pageflow.internal.FacesBackingBeanFactory;
39 import org.apache.beehive.netui.script.el.NetUIUpdateVariableResolver;
40 import org.apache.beehive.netui.util.logging.Logger;
41
42
45 public class ImplicitObjectUtil {
46
47 private static final Logger LOGGER = Logger.getInstance(ImplicitObjectUtil.class);
48
49 private static final String PAGE_FLOW_IMPLICIT_OBJECT_KEY = "pageFlow";
50 private static final String SHARED_FLOW_IMPLICIT_OBJECT_KEY = "sharedFlow";
51 private static final String GLOBAL_APP_IMPLICIT_OBJECT_KEY = "globalApp";
52 private static final String BUNDLE_IMPLICIT_OBJECT_KEY = "bundle";
53 private static final String BACKING_IMPLICIT_OBJECT_KEY = "backing";
54 private static final String PAGE_INPUT_IMPLICIT_OBJECT_KEY = "pageInput";
55 private static final String ACTION_FORM_IMPLICIT_OBJECT_KEY = "actionForm";
56 private static final String OUTPUT_FORM_BEAN_OBJECT_KEY = "outputFormBean";
57
58
59 private ImplicitObjectUtil() {}
60
61 public static final void loadActionForm(JspContext jspContext, Object form) {
62 jspContext.setAttribute(ACTION_FORM_IMPLICIT_OBJECT_KEY, unwrapForm(form));
63 }
64
65 public static final void unloadActionForm(JspContext jspContext) {
66 jspContext.removeAttribute(ACTION_FORM_IMPLICIT_OBJECT_KEY);
67 }
68
69 public static final void loadPageFlow(ServletRequest request, PageFlowController pageFlow, FacesBackingBean fbb) {
70 if(pageFlow != null)
71 request.setAttribute(PAGE_FLOW_IMPLICIT_OBJECT_KEY, pageFlow);
72 if(fbb != null)
73 request.setAttribute(BACKING_IMPLICIT_OBJECT_KEY, fbb);
74
75 Map map = InternalUtils.getPageInputMap(request);
76 request.setAttribute(PAGE_INPUT_IMPLICIT_OBJECT_KEY, map != null ? map : Collections.EMPTY_MAP);
77 }
78
79 public static final void loadSharedFlow(ServletRequest request, Map sharedFlows) {
80 if(sharedFlows != null)
81 request.setAttribute(SHARED_FLOW_IMPLICIT_OBJECT_KEY, sharedFlows);
82 }
83
84 public static final void loadGlobalApp(ServletRequest request, GlobalApp globalApp) {
85 if(globalApp != null)
86 request.setAttribute(GLOBAL_APP_IMPLICIT_OBJECT_KEY, globalApp);
87 }
88
89 public static final void loadBundleMap(ServletRequest servletRequest, BundleMap bundleMap) {
90 servletRequest.setAttribute(BUNDLE_IMPLICIT_OBJECT_KEY, bundleMap);
91 }
92
93 public static final Object unwrapForm(Object form) {
94 if(LOGGER.isDebugEnabled() && form instanceof AnyBeanActionForm)
95 LOGGER.debug("using form of type: " + ((AnyBeanActionForm)form != null ? ((AnyBeanActionForm)form).getClass().getName() : "null"));
96
97 if(form instanceof AnyBeanActionForm)
98 return ((AnyBeanActionForm)form).getBean();
99 else
100 return form;
101 }
102
103 public static final Map getSharedFlow(ServletRequest request) {
104 return (Map )request.getAttribute(SHARED_FLOW_IMPLICIT_OBJECT_KEY);
105 }
106
107 public static final PageFlowController getPageFlow(ServletRequest request, ServletResponse response) {
108 assert request instanceof HttpServletRequest ;
109
110 PageFlowController jpf = PageFlowUtils.getCurrentPageFlow((HttpServletRequest )request);
111 if(jpf != null)
112 return jpf;
113 else {
114 RuntimeException re = new RuntimeException ("There is no current PageFlow for the expression.");
116 if(LOGGER.isErrorEnabled()) LOGGER.error("", re);
117 throw re;
118 }
119 }
120
121 public static final GlobalApp getGlobalApp(ServletRequest request, ServletResponse response) {
122 assert request instanceof HttpServletRequest ;
123
124 GlobalApp ga = PageFlowUtils.getGlobalApp((HttpServletRequest )request);
125
126 if(ga == null) {
127 RuntimeException re = new RuntimeException ("Can not create the globalApp binding context; the GlobalApp object is null.");
129 if(LOGGER.isErrorEnabled()) LOGGER.error("", re);
130 throw re;
131 }
132
133 return ga;
134 }
135
136
139 public static final VariableResolver getUpdateVariableResolver(ServletRequest request, ServletResponse response, boolean isHandlingPost) {
140 Object form = ImplicitObjectUtil.unwrapForm(request.getAttribute(org.apache.struts.taglib.html.Constants.BEAN_KEY));
141
142
143 return new NetUIUpdateVariableResolver(form, request, response, isHandlingPost);
144 }
145
146 public static final VariableResolver getUpdateVariableResolver(Object form, ServletRequest request, ServletResponse response, boolean isHandlingPost) {
147 Object realForm = ImplicitObjectUtil.unwrapForm(form);
148
149
150 return new NetUIUpdateVariableResolver(realForm, request, response, isHandlingPost);
151 }
152
153 public static final VariableResolver getReadVariableResolver(PageContext pageContext) {
154 assert pageContext != null;
155 return pageContext.getVariableResolver();
156 }
157
158 public static final void loadImplicitObjects(HttpServletRequest request, HttpServletResponse response, ServletContext servletContext, PageFlowController curJpf) {
159 FacesBackingBean fbb =
162 FacesBackingBeanFactory.getFacesBackingBeanForRequest(request, response, servletContext);
163 loadPageFlow(request, curJpf, fbb);
164
165 BundleMap bundleMap = new BundleMap(request, servletContext);
167 loadBundleMap(request, bundleMap);
168 }
169
170 public static final void loadOutputFormBean(ServletRequest request, Object bean) {
171 if(bean != null)
172 request.setAttribute(OUTPUT_FORM_BEAN_OBJECT_KEY, bean);
173 }
174 }
175 |
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