javax.faces.component.UIParameter Maven / Gradle / Ivy
/*
* $Id: UIParameter.java,v 1.30 2007/04/27 22:00:05 ofung Exp $
*/
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package javax.faces.component;
import javax.el.ELException;
import javax.el.ValueExpression;
import javax.faces.FacesException;
import javax.faces.context.FacesContext;
/**
* UIParameter is a {@link UIComponent} that represents
* an optionally named configuration parameter for a parent component.
*
* Parent components should retrieve the value of a parameter by calling
* getValue(). In this way, the parameter value can be set
* directly on the component (via setValue()), or retrieved
* indirectly via the value binding expression.
*
* In some scenarios, it is necessary to provide a parameter name, in
* addition to the parameter value that is accessible via the
* getValue() method.
* {@link javax.faces.render.Renderer}s that support parameter names on their
* nested {@link UIParameter} child components should document
* their use of this property.
*
*/
public class UIParameter extends UIComponentBase {
// ------------------------------------------------------ Manifest Constants
/**
* The standard component type for this component.
*/
public static final String COMPONENT_TYPE = "javax.faces.Parameter";
/**
* The standard component family for this component.
*/
public static final String COMPONENT_FAMILY = "javax.faces.Parameter";
enum PropertyKeys {
name,
value,
disble
}
// ------------------------------------------------------------ Constructors
/**
* Create a new {@link UIParameter} instance with default property
* values.
*/
public UIParameter() {
super();
setRendererType(null);
}
// -------------------------------------------------------------- Properties
public String getFamily() {
return (COMPONENT_FAMILY);
}
/**
* Return the optional parameter name for this parameter.
*/
public String getName() {
return (String) getStateHelper().eval(PropertyKeys.name);
}
/**
* Set the optional parameter name for this parameter.
*
* @param name The new parameter name,
* or null for no name
*/
public void setName(String name) {
getStateHelper().put(PropertyKeys.name, name);
}
/**
* Returns the value property of the
* UIParameter.
*/
public Object getValue() {
return getStateHelper().eval(PropertyKeys.value);
}
/**
* Sets the value property of the\
* UIParameter.
*
* @param value the new value
*/
public void setValue(Object value) {
getStateHelper().put(PropertyKeys.value, value);
}
/**
* Return the value of the disable
* directive for this component. This directive determines whether the
* parameter value should be disabled by assigning it a null value.
* If true, the value set on this component is ignored.
*/
public boolean isDisable() {
return (Boolean) getStateHelper().eval(PropertyKeys.disble, false);
}
/**
* Sets the disable property of the UIParameter.
* @param disable
*/
public void setDisable(boolean disable) {
getStateHelper().put(PropertyKeys.disble, disable);
}
}