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1
5 package org.exoplatform.faces.core.event;
6
7 import java.util.* ;
8
9 import javax.faces.component.UIComponent;
10 import javax.faces.context.FacesContext;
11 import javax.faces.context.ExternalContext;
12 import javax.faces.event.AbortProcessingException;
13 import javax.faces.event.ActionEvent;
14 import javax.faces.event.ActionListener;
15 import org.exoplatform.Constants;
16 import org.exoplatform.faces.context.PortletExternalContext;
17 import org.exoplatform.faces.core.Util;
18 import org.exoplatform.faces.core.component.InformationProvider;
19
20
26 abstract public class ExoActionListener implements ActionListener {
27 private static List exceptionHandlers_ ;
28 static {
29 exceptionHandlers_ = new ArrayList(10);
30 exceptionHandlers_.add(new UniqueObjectExceptionHandler()) ;
31 exceptionHandlers_.add(new MessageExceptionHandler()) ;
32 exceptionHandlers_.add(new PermissionExceptionHandler()) ;
33 exceptionHandlers_.add(new FatalExceptionHandler()) ;
34 }
35
36 private List interceptors_ ;
37 private String  action_ ;
38
39 public ExoActionListener() { }
40
41 public void init() { }
42
43 public ExoActionListener setActionToListen(String action) {
44 action_ = action ;
45 return this ;
46 }
47
48 public String getActionName() { return action_ ; }
49
50 final public void processAction(ActionEvent action) throws AbortProcessingException {
51 throw new AbortProcessingException("Use processAction(ExoActionEvent action)") ;
52 }
53
54 public boolean canHandleAction(String action) {
55 return action_.equals(action) ;
56 }
57
58 final public void processAction(ExoActionEvent action) throws AbortProcessingException {
59 try {
60 if(interceptors_ != null) {
62 for(int i = 0; i < interceptors_.size(); i++) {
63 ActionInterceptor interceptor = (ActionInterceptor) interceptors_.get(i) ;
64 interceptor.preExecute(action) ;
65 }
66 }
67 execute(action) ;
68 if(interceptors_ != null) {
70 for(int i = 0; i < interceptors_.size(); i++) {
71 ActionInterceptor interceptor = (ActionInterceptor) interceptors_.get(i) ;
72 interceptor.preExecute(action) ;
73 }
74 }
75 } catch (Exception ex) {
76 ExceptionHandler handler = null;
77 for (int i = 0; i < exceptionHandlers_.size(); i++) {
78 ExceptionHandler eh = (ExceptionHandler) exceptionHandlers_.get(i) ;
79 if(eh.canHandleError(ex)) {
80 handler = eh ;
81 break ;
82 }
83 }
84 handler.handle(action, ex) ;
85 }
86 postExecute(action) ;
87 }
88
89 protected void postExecute(ExoActionEvent action) {
90 FacesContext.getCurrentInstance().renderResponse() ;
91 }
92
93 abstract public void execute(ExoActionEvent event) throws Exception ;
94
95 public ExoActionListener addInterceptor(ActionInterceptor interceptor) {
96 if(interceptors_ == null) {
97 interceptors_ = new ArrayList(3) ;
98 }
99 interceptors_.add(interceptor) ;
100 return this ;
101 }
102
103 protected String getResourceBaseName() {
104 String baseName = getClass().getName() ;
105 int idx = baseName.lastIndexOf('.') ;
106 baseName = baseName.substring(idx + 1, baseName.length()) ;
107 baseName = baseName.replace('$', '.') ;
108 return baseName ;
109 }
110
111 public ResourceBundle getApplicationResourceBundle() {
112 ExternalContext eContext = FacesContext.getCurrentInstance().getExternalContext() ;
113 if(eContext instanceof PortletExternalContext) {
114 PortletExternalContext impl = (PortletExternalContext) eContext ;
115 return impl.getApplicationResourceBundle() ;
116 }
117 return (ResourceBundle)eContext.getRequestMap().get(Constants.APPLICATION_RESOURCE) ;
118 }
119
120 protected InformationProvider findInformationProvider(UIComponent src) {
121 return Util.findInformationProvider(src) ;
122 }
123 }
124 |
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