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This is the master POM file for Oracle's Implementation of the JSF 2.1 Specification.
There is a newer version: 2.1
/*
 * $Id: UISelectItems.java,v 1.30 2006/06/05 21:14:26 rlubke Exp $
 */

/*
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the License). You may not use this file except in
 * compliance with the License.
 * 
 * You can obtain a copy of the License at
 * https://javaserverfaces.dev.java.net/CDDL.html or
 * legal/CDDLv1.0.txt. 
 * See the License for the specific language governing
 * permission and limitations under the License.
 * 
 * When distributing Covered Code, include this CDDL
 * Header Notice in each file and include the License file
 * at legal/CDDLv1.0.txt.    
 * If applicable, add the following below the CDDL Header,
 * with the fields enclosed by brackets [] replaced by
 * your own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
 * 
 * [Name of File] [ver.__] [Date]
 * 
 * Copyright 2005 Sun Microsystems Inc. All Rights Reserved
 */

package javax.faces.component;

import javax.el.ELException;
import javax.el.ValueExpression;
import javax.faces.FacesException;
import javax.faces.context.FacesContext;
import javax.faces.model.SelectItem;


/**
 * UISelectItems is a component that may be nested
 * inside a {@link UISelectMany} or {@link UISelectOne} component, and
 * causes the addition of one or more {@link SelectItem} instances to the
 * list of available options in the parent component.  The
 * value of this component (set either directly, or acquired
 * indirectly a {@link javax.el.ValueExpression}, can be of any
 * of the following types:
 * 
 * Single instance of {@link SelectItem} - This instance is
 *     added to the set of available options for the parent tag.
 * Array of {@link SelectItem} - This set of instances is
 *     added to the set of available options for the parent component,
 *     in ascending subscript order.
 * Collection of {@link SelectItem} - This set of instances is
 *     added to the set of available options for the parent component,
 *     in the order provided by an iterator over them.
 * Map - The keys of this object (once converted to
 *     Strings) are assumed to be labels, and the values of this object
 *     (once converted to Strings)
 *     are assumed to be values, of {@link SelectItem} instances that will
 *     be constructed dynamically and added to the set of available options
 *     for the parent component, in the order provided by an iterator over
 *     the keys.
 * 
 */

public class UISelectItems extends UIComponentBase {


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


    /**
     * The standard component type for this component.
     */
    public static final String COMPONENT_TYPE = "javax.faces.SelectItems";


    /**
     * The standard component family for this component.
     */
    public static final String COMPONENT_FAMILY = "javax.faces.SelectItems";


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


    /**
     * Create a new {@link UISelectItems} instance with default property
     * values.
     */
    public UISelectItems() {

        super();
        setRendererType(null);

    }


    // ------------------------------------------------------ Instance Variables


    private Object value = null;


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


    public String getFamily() {

        return (COMPONENT_FAMILY);

    }


    // -------------------------------------------------- ValueHolder Properties


    /**
     * Returns the value property of the
     * UISelectItems.
     */
    public Object getValue() {

	if (this.value != null) {
	    return (this.value);
	}
	ValueExpression ve = getValueExpression("value");
	if (ve != null) {
	    try {
		return (ve.getValue(getFacesContext().getELContext()));
	    }
	    catch (ELException e) {
		throw new FacesException(e);
	    }
	} else {
	    return (null);
	}

    }


    /**
     * Sets the value property of the
     * UISelectItems.
     * 
     * @param value the new value
     */
    public void setValue(Object value) {

        this.value = value;

    }


    // ----------------------------------------------------- StateHolder Methods


    private Object[] values;

    public Object saveState(FacesContext context) {

        if (values == null) {
             values = new Object[2];
        }
      
        values[0] = super.saveState(context);
        values[1] = value;
        return (values);

    }


    public void restoreState(FacesContext context, Object state) {

        values = (Object[]) state;
        super.restoreState(context, values[0]);
        value = values[1];

    }




}