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
007 import javax.faces.context.FacesContext;
008 import javax.faces.application.Application;
009 import javax.faces.el.ValueBinding;
010 import javax.faces.el.MethodBinding;
011 import javax.faces.el.ReferenceSyntaxException;
012 import javax.faces.event.ValueChangeEvent;
013
014 //import org.apache.log4j.Logger;
015
016 import edu.nrao.sss.webapp.faces.component.PolynomialUIComponent;
017
018 public class PolynomialTag extends UIComponentTag
019 {
020 //private static final Logger log = Logger.getLogger(PolynomialTag.class);
021
022 public String getComponentType() { return "edu.nrao.sss.Polynomial"; }
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 /*
032 @SuppressWarnings("unchecked")
033 public UIComponent getComponentInstance()
034 {
035 PolynomialUIComponent comp = (PolynomialUIComponent)super.getComponentInstance();
036
037 if (comp.getChildCount() == 0)
038 {
039 HtmlCommandButton button = new HtmlCommandButton();
040 button.setValue("Add Term");
041 button.setId("AddTermButton");
042
043 comp.getChildren().add(button);
044 }
045
046 return comp;
047 }
048 */
049
050 @SuppressWarnings("unchecked")
051 protected void setProperties(UIComponent component)
052 {
053 super.setProperties(component);
054
055 FacesContext context = FacesContext.getCurrentInstance();
056 Application app = context.getApplication();
057
058 if (value != null)
059 {
060 if (isValueReference(value))
061 {
062 ValueBinding vb = app.createValueBinding(value);
063
064 component.setValueBinding("value", vb);
065 }
066
067 else
068 {
069 throw new ReferenceSyntaxException(value + " is not a valid EL expression");
070 }
071 }
072
073 if (valueChangeListener != null)
074 {
075 Class[] params = new Class[1];
076 params[0] = ValueChangeEvent.class;
077
078 MethodBinding mb = app.createMethodBinding(valueChangeListener, params);
079
080 ((UIInput)component).setValueChangeListener(mb);
081 }
082
083 if (enabled != null)
084 {
085 if (isValueReference(enabled))
086 {
087 ValueBinding vb = app.createValueBinding(enabled);
088
089 component.setValueBinding("enabled", vb);
090 }
091
092 else
093 {
094 ((PolynomialUIComponent)component).setEnabled(isTrue(enabled));
095 }
096 }
097
098 if (style != null)
099 {
100 if (isValueReference(style))
101 {
102 ValueBinding vb = app.createValueBinding(style);
103
104 component.setValueBinding("style", vb);
105 }
106
107 else
108 {
109 component.getAttributes().put("style", style);
110 }
111 }
112
113 if (styleClass != null)
114 {
115 if (isValueReference(styleClass))
116 {
117 ValueBinding vb = app.createValueBinding(styleClass);
118
119 component.setValueBinding("styleClass", vb);
120 }
121
122 else
123 {
124 component.getAttributes().put("styleClass", styleClass);
125 }
126 }
127 }
128
129 public void setValue(String v)
130 {
131 this.value = v;
132 }
133
134 public void setValueChangeListener(String l)
135 {
136 this.valueChangeListener = l;
137 }
138
139 public void setEnabled(String e)
140 {
141 this.enabled = e;
142 }
143
144 public void setStyle(String s)
145 {
146 this.style = s;
147 }
148
149 public void setStyleClass(String sc)
150 {
151 this.styleClass = sc;
152 }
153
154 public boolean isTrue(String v)
155 {
156 return ("true".equalsIgnoreCase(v) || "1".equals(v));
157 }
158 }