001 package edu.nrao.sss.webapp.faces.tag;
002
003 import javax.faces.webapp.UIComponentTag;
004 import javax.faces.component.UIComponent;
005 import javax.faces.component.UIInput;
006 import javax.faces.context.FacesContext;
007 import javax.faces.application.Application;
008 import javax.faces.el.ValueBinding;
009 import javax.faces.el.MethodBinding;
010 import javax.faces.el.ReferenceSyntaxException;
011 import javax.faces.event.ValueChangeEvent;
012
013
014 import org.apache.log4j.Logger;
015
016 import edu.nrao.sss.webapp.faces.component.FrequencyRangeUIComponent;
017
018 public class FrequencyRangeTag extends UIComponentTag
019 {
020 private static final Logger log = Logger.getLogger(FrequencyRangeTag.class);
021
022 public String getComponentType() { return "edu.nrao.sss.FrequencyRange"; }
023 public String getRendererType() { return null; }
024
025 private String value = null,
026 valueChangeListener = null,
027 enabled = null,
028 style = null,
029 styleClass = null;
030
031 @SuppressWarnings("unchecked")
032 protected void setProperties(UIComponent component)
033 {
034 super.setProperties(component);
035
036 FacesContext context = FacesContext.getCurrentInstance();
037 Application app = context.getApplication();
038
039 log.debug("Value is: " + value);
040 if (value != null)
041 {
042 if (isValueReference(value))
043 {
044 ValueBinding vb = app.createValueBinding(value);
045
046 component.setValueBinding("value", vb);
047 }
048
049 else
050 {
051 throw new ReferenceSyntaxException(value + " is not a valid EL expression");
052 }
053 }
054
055 if (valueChangeListener != null)
056 {
057 Class[] params = new Class[1];
058 params[0] = ValueChangeEvent.class;
059
060 MethodBinding mb = app.createMethodBinding(valueChangeListener, params);
061
062 ((UIInput)component).setValueChangeListener(mb);
063 }
064
065 if (enabled != null)
066 {
067 if (isValueReference(enabled))
068 {
069 ValueBinding vb = app.createValueBinding(enabled);
070
071 component.setValueBinding("enabled", vb);
072 }
073
074 else
075 {
076 ((FrequencyRangeUIComponent)component).setEnabled(isTrue(enabled));
077 }
078 }
079
080 if (style != null)
081 {
082 if (isValueReference(style))
083 {
084 ValueBinding vb = app.createValueBinding(style);
085
086 component.setValueBinding("style", vb);
087 }
088
089 else
090 {
091 component.getAttributes().put("style", style);
092 }
093 }
094
095 if (styleClass != null)
096 {
097 if (isValueReference(styleClass))
098 {
099 ValueBinding vb = app.createValueBinding(styleClass);
100
101 component.setValueBinding("styleClass", vb);
102 }
103
104 else
105 {
106 component.getAttributes().put("styleClass", styleClass);
107 }
108 }
109 }
110
111 public void release()
112 {
113 super.release();
114 this.enabled = null;
115 this.value = null;
116 this.style = null;
117 this.styleClass = null;
118 }
119
120 public void setValue(String v)
121 {
122 this.value = v;
123 }
124
125 public void setValueChangeListener(String l)
126 {
127 this.valueChangeListener = l;
128 }
129
130 public void setEnabled(String e)
131 {
132 this.enabled = e;
133 }
134
135 public void setStyle(String s)
136 {
137 this.style = s;
138 }
139
140 public void setStyleClass(String sc)
141 {
142 this.styleClass = sc;
143 }
144
145 public boolean isTrue(String v)
146 {
147 return ("true".equalsIgnoreCase(v) || "1".equals(v));
148 }
149 }