|
1 package org.exoplatform.portlet.faces.lifecycle;
2
3 import java.util.*;
4 import javax.faces.FacesException;
5 import javax.faces.context.FacesContext;
6 import javax.faces.event.*;
7 import javax.faces.lifecycle.Lifecycle;
8 import javax.servlet.http.HttpServletRequest  ;
9
10 import org.apache.commons.logging.Log;
11 import org.exoplatform.services.log.LogUtil;
12 import com.sun.faces.lifecycle.* ;
13
14 import org.exoplatform.portlet.faces.context.* ;
15
16 public class ExoLifecycle extends Lifecycle {
17 private static Log log_ = LogUtil.getLog("org.exoplatform.portlet.faces.faces");
18
19 private List listeners;
20 private Phase phases[] = {
21 null, new RestoreViewPhase(), new ApplyRequestValuesPhase(),
22 new ProcessValidationsPhase(), new UpdateModelValuesPhase(),
23 new InvokeApplicationPhase()
24 };
25 private Phase response;
26
27 public ExoLifecycle() {
28 listeners = new ArrayList();
29 response = new RenderResponsePhase();
30 }
31
32 public void execute(FacesContext context) throws FacesException {
33 if(context == null) throw new NullPointerException ("Faces context cannot be null");
35 FacesPortletContextImpl contextImpl = (FacesPortletContextImpl) context ;
36 boolean portletRenderPhase = contextImpl.isPortletRenderPhase() ;
37 for(int i = 1; i < phases.length; i++) {
38 if(context.getRenderResponse() || context.getResponseComplete()) {
39 break;
40 }
41 phase((PhaseId)PhaseId.VALUES.get(i), phases[i], context);
43 if(reload((PhaseId)PhaseId.VALUES.get(i), context)) {
44 context.renderResponse();
45 }
46 if(portletRenderPhase) return ;
47 }
48 }
50
51 public void render(FacesContext context) throws FacesException {
52 if(context == null) throw new NullPointerException ("Faces context cannot be null");
53 FacesPortletContextImpl contextImpl = (FacesPortletContextImpl) context ;
54 if (!contextImpl.isPortletRenderPhase()) return ;
55 if(!context.getResponseComplete()) {
56 phase(PhaseId.RENDER_RESPONSE, response, context);
57 }
58 }
59
60 public void addPhaseListener(PhaseListener listener) {
61 if(listener == null)
62 throw new NullPointerException ("Faces Context cannot be null");
63 synchronized(listeners) {
64 listeners.add(listener);
65 }
66 }
67
68 public PhaseListener[] getPhaseListeners() {
69 List list = listeners;
70 PhaseListener results[] = new PhaseListener[listeners.size()];
71 return (PhaseListener[])listeners.toArray(results);
72 }
73
74 public void removePhaseListener(PhaseListener listener) {
75 if(listener == null) throw new NullPointerException ("Faces Context cannot be null");
76 synchronized(listeners) {
77 listeners.remove(listener);
78 }
79 }
80
81 private void phase(PhaseId phaseId, Phase phase, FacesContext context) throws FacesException {
82 synchronized(listeners) {
83 if(listeners.size() > 0) {
84 PhaseEvent event = new PhaseEvent(context, phaseId, this);
85 for(int i = 0; i < listeners.size(); i++) {
86 PhaseListener listener = (PhaseListener)listeners.get(i);
87 if(phaseId.equals(listener.getPhaseId()) || PhaseId.ANY_PHASE.equals(listener.getPhaseId())) {
88 listener.beforePhase(event);
89 }
90 }
91
92 }
93 }
94
95 if(!skipping(phaseId, context)) phase.execute(context);
96 synchronized(listeners) {
97 if(listeners.size() > 0) {
98 PhaseEvent event = new PhaseEvent(context, phaseId, this);
99 for(int i = listeners.size() - 1; i >= 0; i--) {
100 PhaseListener listener = (PhaseListener)listeners.get(i);
101 if(phaseId.equals(listener.getPhaseId()) || PhaseId.ANY_PHASE.equals(listener.getPhaseId())) {
102 listener.afterPhase(event);
103 }
104 }
105
106 }
107 }
108 }
109
110 private boolean reload(PhaseId phaseId, FacesContext context) {
111 if(!phaseId.equals(PhaseId.RESTORE_VIEW)) return false;
112 if(!(context.getExternalContext().getRequest() instanceof HttpServletRequest )) {
113 log_.debug("request instance is not HttpServletRequest ");
114 return false;
115 }
116
117 HttpServletRequest request = (HttpServletRequest )context.getExternalContext().getRequest();
118 String method = request.getMethod();
119 log_.debug("method is " + method);
120 if("GET".equals(method)) {
121 Iterator names = context.getExternalContext().getRequestParameterNames();
122 if(names.hasNext()) return false;
123 }
124 return !"POST".equals(method) && !"PUT".equals(method);
125 }
126
127 private boolean skipping(PhaseId phaseId, FacesContext context) {
128 if(context.getResponseComplete()) return true;
129 return context.getRenderResponse() && !phaseId.equals(PhaseId.RENDER_RESPONSE);
130 }
131
132 }
133 |
Popular Tags |
Java API By Example, From Geeks To Geeks.