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