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1 package org.appfuse.webapp.jsf;
2
3 import java.util.Iterator  ;
4 import java.util.Map ;
5
6 import javax.faces.component.UIComponent;
7 import javax.faces.component.UIInput;
8 import javax.faces.context.FacesContext;
9 import javax.faces.context.ResponseWriter;
10 import javax.faces.render.Renderer;
11
12 import org.apache.commons.lang.StringUtils;
13 import org.apache.commons.logging.Log;
14 import org.apache.commons.logging.LogFactory;
15
16
23 public class LabelRenderer extends Renderer {
24 protected final Log log = LogFactory.getLog(LabelRenderer.class);
25
26 public boolean getRendersChildren() {
27 return false;
28 }
29
30 public void encodeBegin(FacesContext context, UIComponent component)
31 throws java.io.IOException {
32 ResponseWriter writer = context.getResponseWriter();
33
34 Map attrs = component.getAttributes();
35 String id = (String ) attrs.get("for");
36
37 UIInput input = null;
38
39 if (!StringUtils.isEmpty(id)) {
40 input = (UIInput) component.findComponent(id);
41 }
42
43 writer.startElement("label", component);
44
45 String styleClass = (String ) component.getAttributes().get("styleClass");
46
47 boolean hasErrors = hasMessages(context, input);
48
49 if (styleClass != null) {
50 if (hasErrors) styleClass += " error";
51 writer.writeAttribute("class", styleClass, null);
52 } else if (hasErrors) {
53 writer.writeAttribute("class", "error", null);
54 }
55
56 String renderedId =
57 (input != null) ? input.getClientId(context)
58 : component.getClientId(context);
59 writer.writeAttribute("for", renderedId, null);
60 writer.write(attrs.get("value").toString());
61 }
62
63 public void encodeEnd(FacesContext context, UIComponent component)
64 throws java.io.IOException {
65 ResponseWriter writer = context.getResponseWriter();
66
67 Map attrs = component.getAttributes();
68 String id = (String ) attrs.get("for");
69
70 UIInput input = null;
71
72 if (!StringUtils.isEmpty(id)) {
73 input = (UIInput) component.findComponent(id);
74 }
75
76 if ((input != null) && input.isRequired()) {
77 writer.write(" <span class=\"req\">*</span>");
78 }
79
80 writer.endElement("label");
81 }
82
83 private boolean hasMessages(FacesContext context, UIComponent component) {
84 Iterator it = context.getClientIdsWithMessages();
85 boolean found = false;
86
87 while (it.hasNext()) {
88 String id = (String ) it.next();
89
90 if ((component != null) && id.equals(component.getClientId(context))) {
91 found = true;
92 break;
93 }
94 }
95
96 return found;
97 }
98 }
99 |
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