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/* 
 * This file is part of the Echo Extras Project.
 * Copyright (C) 2005-2009 NextApp, Inc.
 *
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 */

package nextapp.echo.extras.webcontainer.sync.component;

import nextapp.echo.app.Component;
import nextapp.echo.app.update.ClientUpdateManager;
import nextapp.echo.app.util.Context;
import nextapp.echo.extras.app.DropDownMenu;
import nextapp.echo.extras.app.menu.AbstractMenuComponent;
import nextapp.echo.extras.app.menu.ItemModel;
import nextapp.echo.extras.app.menu.MenuSelectionModel;
import nextapp.echo.webcontainer.ComponentSynchronizePeer;

/**
 * Synchronization peer for DropDownMenus.
 * 
 * @author n.beekman
 */
public class DropDownMenuPeer extends AbstractMenuPeer {
    
    private static final String PROPERTY_SELECTION = "selection";
    private static final String PROPERTY_SELECTION_ENABLED = "selectionEnabled";

    public DropDownMenuPeer() {
        super();
        addOutputProperty(PROPERTY_SELECTION);
        addOutputProperty(PROPERTY_SELECTION_ENABLED);
    }

    /**
     * @see nextapp.echo.webcontainer.ComponentSynchronizePeer#getClientComponentType(boolean)
     */
    public String getClientComponentType(boolean mode) {
        return "Extras.DropDownMenu";
    }
    
    /**
     * @see nextapp.echo.webcontainer.ComponentSynchronizePeer#getComponentClass()
     */
    public Class getComponentClass() {
        return DropDownMenu.class;
    }
    
    /**
     * @see ComponentSynchronizePeer#getInputPropertyClass(String)
     */
    public Class getInputPropertyClass(String propertyName) {
        if (PROPERTY_SELECTION.equals(propertyName)) {
            return String.class;
        } else if (PROPERTY_SELECTION_ENABLED.equals(propertyName)) {
            return Boolean.class;
        }
        return super.getInputPropertyClass(propertyName);
    }
    
    /**
     * @see ComponentSynchronizePeer#getOutputProperty(Context, Component, String, int)
     */
    public Object getOutputProperty(Context context, Component component, String propertyName, int propertyIndex) {
        DropDownMenu menu = (DropDownMenu) component;
        if (PROPERTY_SELECTION.equals(propertyName)) {
            MenuSelectionModel selectionModel = menu.getSelectionModel();
            if (selectionModel != null) {
                String selectedId = selectionModel.getSelectedId();
                if (selectedId != null) {
                    return getItemPath(menu.getModel(), getItemModelById(menu, selectedId));
                }
            }
            return null;
        } else if (PROPERTY_SELECTION_ENABLED.equals(propertyName)) {
            return Boolean.valueOf(menu.getSelectionModel() != null);
        } else {
            return super.getOutputProperty(context, component, propertyName, propertyIndex);
        }
    }
    
    /**
     * @see ComponentSynchronizePeer#storeInputProperty(Context, Component, String, int, Object)
     */
    public void storeInputProperty(Context context, Component component, String propertyName, int index, Object newValue) {
        if (PROPERTY_SELECTION.equals(propertyName)) {
            ItemModel itemModel = getItemModel((AbstractMenuComponent) component, (String) newValue);
            ClientUpdateManager clientUpdateManager = (ClientUpdateManager) context.get(ClientUpdateManager.class);
            clientUpdateManager.setComponentProperty(component, DropDownMenu.SELECTION_CHANGED_PROPERTY, itemModel);
        }
    }
}