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/*
 * 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://woodstock.dev.java.net/public/CDDLv1.0.html.
 * See the License for the specific language governing
 * permissions and limitations under the License.
 * 
 * When distributing Covered Code, include this CDDL
 * Header Notice in each file and include the License file
 * at https://woodstock.dev.java.net/public/CDDLv1.0.html.
 * If applicable, add the following below the CDDL Header,
 * with the fields enclosed by brackets [] replaced by
 * you own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
 * 
 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
 */
package com.sun.webui.jsf.component;

import java.util.Iterator;
import javax.faces.context.FacesContext;
import javax.faces.component.EditableValueHolder;
import javax.faces.component.UIComponent;

/**
 * This interface is used to allow both list components which
 * allow the user to select from a set of Options (e.g. Listbox, 
 * AddRemove) and list components which allow the user to edit 
 * a list to use the same renderer.
 *
 * @author avk
 */
//TODO: consider making this a base class instead. There
// is code which is shared between Selectors and Editable List,
// Orderable List. (getConvertedValue, getValueAsString, ...)
public interface ListManager extends EditableValueHolder, SelectorManager,
        ComplexComponent {

    /**
     * Get an Iterator of the items to display. The items are of
     * type com.sun.webui.jsf.model.list.ListItem and
     * are an abstraction over different types of actual data
     * to be used by the renderer
     * @param rulerAtEnd If this attribute is set to true, the iterator will
     * contain, as the last item, a disabled list option with a blank label whose
     * sole function is to guarantee that the list stays the same size
     * @return An Iterator of  com.sun.webui.jsf.model.list.ListItem
     */
    public Iterator getListItems(FacesContext context, boolean rulerAtEnd);

    /**
     * Retrieves the tooltip for the list
     * @return A string with the text for the tool tip
     */
    public String getToolTip();

    /**
     * Get the value of the component as a String array. The array consists
     * of the converted value of each list item is shown.
     * @param context The FacesContext of the request
     * @return A string representation of the value
     */
    public String[] getValueAsStringArray(FacesContext context);

    /**
     * Get the number of rows to display (the size of the HTML 
     * select element)
     * @return The size of the list
     */
    public int getRows();

    /**
     * Returns a UIComponent used to display the readonly value for this 
     * component
     * @return a UIComponent used to display the readonly value for this 
     * component
     */
    public UIComponent getReadOnlyValueComponent();

    public boolean isVisible();

    // return true if the select element associated with the component 
    // represents the value in the HTTP request. 
    public boolean mainListSubmits();
}




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