UIParameter.java

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package javax.faces.component;



/**
 * <p><strong>UIParameter</strong> is a {@link UIComponent} that represents
 * an optionally named configuration parameter for a parent component.</p>
 *
 * <p>Parent components should retrieve the value of a parameter by calling
 * <code>getValue()</code>.  In this way, the parameter value can be set
 * directly on the component (via <code>setValue()</code>), or retrieved
 * indirectly via the value binding expression.</p>
 *
 * <p>In some scenarios, it is necessary to provide a parameter name, in
 * addition to the parameter value that is accessible via the
 * <code>getValue()</code> 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.</p>
 *
 */

public class UIParameter extends UIComponentBase {


    // ------------------------------------------------------ Manifest Constants


    /**
     * <p>The standard component type for this component.</p>
     */
    public static final String COMPONENT_TYPE = "javax.faces.Parameter";


    /**
     * <p>The standard component family for this component.</p>
     */
    public static final String COMPONENT_FAMILY = "javax.faces.Parameter";


    enum PropertyKeys {
        name,
        value,
        disable
    }


    // ------------------------------------------------------------ Constructors


    /**
     * <p>Create a new {@link UIParameter} instance with default property
     * values.</p>
     */
    public UIParameter() {

        super();
        setRendererType(null);

    }


    // -------------------------------------------------------------- Properties


    public String getFamily() {

        return (COMPONENT_FAMILY);

    }


    /**
     * <p>Return the optional parameter name for this parameter.</p>
     */
    public String getName() {

        return (String) getStateHelper().eval(PropertyKeys.name);

    }


    /**
     * <p>Set the optional parameter name for this parameter.</p>
     *
     * @param name The new parameter name,
     *  or <code>null</code> for no name
     */
    public void setName(String name) {

        getStateHelper().put(PropertyKeys.name, name);

    }



    /**
     * <p>Returns the <code>value</code> property of the
     * <code>UIParameter</code>.</p>
     */
    public Object getValue() {

        return getStateHelper().eval(PropertyKeys.value);

    }


    /**
     * <p>Sets the <code>value</code> property of the\
     * <code>UIParameter</code>.</p>
     *
     * @param value the new value
     */
    public void setValue(Object value) {

        getStateHelper().put(PropertyKeys.value, value);

    }

    /**
     * <p class="changed_added_2_0">Return the value of the <code>disable</code>
     * directive for this component. This directive determines whether the
     * parameter value should be disabled by assigning it a null value.
     * If true, the <code>value</code> set on this component is ignored.</p>
     * @since 2.0
     */
    public boolean isDisable() {

        return (Boolean) getStateHelper().eval(PropertyKeys.disable, false);

    }

    /**
     * <p>Sets the <code>disable</code> property of the <code>UIParameter</code>.</p>
     * @param disable
     * @since 2.0
     */
    public void setDisable(boolean disable) {

        getStateHelper().put(PropertyKeys.disable, disable);

    }


}