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package javax.faces.component;
import javax.el.ValueExpression;
import javax.faces.el.ValueBinding;
/**
* UISelectBoolean is a {@link UIComponent} that
* represents a single boolean (true or false) value.
* It is most commonly rendered as a checkbox.
*
* By default, the rendererType property must be set to
* "javax.faces.Checkbox". This value can be changed by
* calling the setRendererType() method.
*/
public class UISelectBoolean extends UIInput {
// ------------------------------------------------------ Manifest Constants
/**
* The standard component type for this component.
*/
public static final String COMPONENT_TYPE = "javax.faces.SelectBoolean";
/**
* The standard component family for this component.
*/
public static final String COMPONENT_FAMILY = "javax.faces.SelectBoolean";
// ------------------------------------------------------------ Constructors
/**
* Create a new {@link UISelectBoolean} instance with default
* property values.
*/
public UISelectBoolean() {
super();
setRendererType("javax.faces.Checkbox");
}
// -------------------------------------------------------------- Properties
@Override
public String getFamily() {
return (COMPONENT_FAMILY);
}
/**
* Return the local value of the selected state of this component.
* This method is a typesafe alias for getValue().
*
* @return true if selected, false otherwise.
*/
public boolean isSelected() {
Boolean value = (Boolean) getValue();
if (value != null) {
return (value.booleanValue());
} else {
return (false);
}
}
/**
* Set the local value of the selected state of this component.
* This method is a typesafe alias for setValue().
*
* @param selected The new selected state
*/
public void setSelected(boolean selected) {
if (selected) {
setValue(Boolean.TRUE);
} else {
setValue(Boolean.FALSE);
}
}
// ---------------------------------------------------------------- Bindings
/**
* Return any {@link ValueBinding} set for value if a
* {@link ValueBinding} for selected is requested; otherwise,
* perform the default superclass processing for this method.
*
* Rely on the superclass implementation to wrap the returned
* ValueExpression in a ValueBinding.
*
* @param name Name of the attribute or property for which to retrieve
* a {@link ValueBinding}
*
* @throws NullPointerException if name
* is null
*
* @deprecated This has been replaced by {@link
* #getValueExpression}.
*/
@Override
public ValueBinding getValueBinding(String name) {
if ("selected".equals(name)) {
return (super.getValueBinding("value"));
} else {
return (super.getValueBinding(name));
}
}
/**
* Store any {@link ValueBinding} specified for selected
* under value instead; otherwise, perform the default
* superclass processing for this method.
*
* Rely on the superclass implementation to wrap the argument
* ValueBinding in a ValueExpression.
*
* @param name Name of the attribute or property for which to set
* a {@link ValueBinding}
* @param binding The {@link ValueBinding} to set, or null
* to remove any currently set {@link ValueBinding}
*
* @throws NullPointerException if name
* is null
*
* @deprecated This has been replaced by {@link #setValueExpression}.
*/
@Override
public void setValueBinding(String name, ValueBinding binding) {
if ("selected".equals(name)) {
super.setValueBinding("value", binding);
} else {
super.setValueBinding(name, binding);
}
}
/**
* Return any {@link ValueExpression} set for value
* if a {@link ValueExpression} for selected is
* requested; otherwise, perform the default superclass processing
* for this method.
*
* @param name Name of the attribute or property for which to retrieve
* a {@link ValueExpression}
*
* @throws NullPointerException if name
* is null
* @since 1.2
*/
@Override
public ValueExpression getValueExpression(String name) {
if ("selected".equals(name)) {
return (super.getValueExpression("value"));
} else {
return (super.getValueExpression(name));
}
}
/**
* Store any {@link ValueExpression} specified for selected
* under value instead; otherwise, perform the default
* superclass processing for this method.
*
* @param name Name of the attribute or property for which to set
* a {@link ValueExpression}
* @param binding The {@link ValueExpression} to set, or null
* to remove any currently set {@link ValueExpression}
*
* @throws NullPointerException if name
* is null
* @since 1.2
*/
@Override
public void setValueExpression(String name, ValueExpression binding) {
if ("selected".equals(name)) {
super.setValueExpression("value", binding);
} else {
super.setValueExpression(name, binding);
}
}
}