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16 package org.apache.myfaces.wap.renderkit.wml;
17
18 import java.util.Iterator  ;
19
20 import javax.faces.application.FacesMessage;
21 import javax.faces.component.UIComponent;
22 import javax.faces.context.FacesContext;
23 import javax.faces.context.ResponseWriter;
24
25 import org.apache.commons.logging.Log;
26 import org.apache.commons.logging.LogFactory;
27 import org.apache.myfaces.util.NullIterator;
28 import org.apache.myfaces.wap.component.Messages;
29 import org.apache.myfaces.wap.renderkit.Attributes;
30 import org.apache.myfaces.wap.renderkit.WmlRenderer;
31
32
40 public class MessagesRenderer extends WmlRenderer {
41 private static Log log = LogFactory.getLog(MessagesRenderer.class);
42
43
44 public MessagesRenderer() {
45 super();
46 log.debug("created object " + this.getClass().getName());
47 }
48
49 public void encodeBegin(FacesContext context, UIComponent component) throws java.io.IOException {
50 log.debug("encodeBegin(" + component.getId() + ")");
51 if (context == null || component == null) {
52 throw new NullPointerException ();
53 }
54 }
55
56 public void encodeChildren(FacesContext context, UIComponent component) throws java.io.IOException {
57 log.debug("encodeChildren(" + component.getId() + ")");
58 if (context == null || component == null) {
59 throw new NullPointerException ();
60 }
61 }
62
63 public void encodeEnd(FacesContext context, UIComponent component) throws java.io.IOException {
64 log.debug("encodeEnd(" + component.getId() + ")");
65 if (context == null || component == null) {
66 throw new NullPointerException ();
67 }
68 if (!component.isRendered()) return;
69
70 Messages comp = (Messages)component;
71 ResponseWriter writer = context.getResponseWriter();
72
73 MessagesIterator messagesIterator = new MessagesIterator(context, comp.isGlobalOnly());
74
75 if (messagesIterator.hasNext()) {
76 String layout = comp.getLayout();
77
78 if (layout == null || layout.equalsIgnoreCase(Attributes.LIST)) {
79 while(messagesIterator.hasNext()) {
80 renderMessage(context, comp, (FacesMessage)messagesIterator.next());
81
82 if (messagesIterator.hasNext())
83 writer.startElement(Attributes.BR, comp);
84 }
85 }
86 else { writer.startElement(Attributes.TABLE, comp);
88 writer.writeAttribute(Attributes.COLUMNS, "1", null);
89
90 while(messagesIterator.hasNext()) {
91 writer.startElement(Attributes.TR, comp);
92 writer.startElement(Attributes.TD, comp);
93 renderMessage(context, comp, (FacesMessage)messagesIterator.next());
94
95 if (messagesIterator.hasNext())
96 writer.startElement(Attributes.BR, comp);
97
98 writer.endElement(Attributes.TD);
99 writer.endElement(Attributes.TR);
100 }
101 writer.endElement(Attributes.TABLE);
102 }
103 }
104 }
105
106 private void renderMessage(FacesContext context, Messages comp, FacesMessage message) throws java.io.IOException {
107 ResponseWriter writer = context.getResponseWriter();
108
109 if (comp.isShowSummary())
110 writer.write(message.getSummary());
111 if (comp.isShowDetail())
112 writer.write(message.getDetail());
113 }
114
115 public void decode(FacesContext context, UIComponent component) {
116 if (component == null ) throw new NullPointerException ();
117 }
118
119 private static class MessagesIterator implements Iterator {
120 private FacesContext _facesContext;
121 private Iterator _globalMessagesIterator;
122 private Iterator _clientIdsWithMessagesIterator;
123 private Iterator _componentMessagesIterator = null;
124 private String _clientId = null;
125
126 public MessagesIterator(FacesContext facesContext, boolean globalOnly) {
127 _facesContext = facesContext;
128 _globalMessagesIterator = facesContext.getMessages(null);
129 if (globalOnly) {
130 _clientIdsWithMessagesIterator = NullIterator.instance();
131 }
132 else {
133 _clientIdsWithMessagesIterator = facesContext.getClientIdsWithMessages();
134 }
135 _componentMessagesIterator = null;
136 _clientId = null;
137 }
138
139 public boolean hasNext() {
140 return _globalMessagesIterator.hasNext() ||
141 _clientIdsWithMessagesIterator.hasNext() ||
142 (_componentMessagesIterator != null && _componentMessagesIterator.hasNext());
143 }
144
145 public Object next() {
146 if (_globalMessagesIterator.hasNext()) {
147 return _globalMessagesIterator.next();
148 }
149 else if (_componentMessagesIterator != null && _componentMessagesIterator.hasNext()) {
150 return _componentMessagesIterator.next();
151 }
152 else {
153 _clientId = (String )_clientIdsWithMessagesIterator.next();
154 _componentMessagesIterator = _facesContext.getMessages(_clientId);
155 return _componentMessagesIterator.next();
156 }
157 }
158
159 public void remove() {
160 throw new UnsupportedOperationException (this.getClass().getName() + " UnsupportedOperationException");
161 }
162
163 public String getClientId() {
164 return _clientId;
165 }
166 }
167
168 }
169
170 |
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