# ReRouteCargoPage.java

    /*
     * Copyright 2011 Marc Grue.
     *
     * Licensed  under the  Apache License,  Version 2.0  (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.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed  under the  License is distributed on an "AS IS" BASIS,
     * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY KIND, either  express  or
     * implied.
     *
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */
    package org.qi4j.sample.dcicargo.sample_b.communication.web.booking;

    import org.apache.wicket.markup.html.WebMarkupContainer;
    import org.apache.wicket.markup.html.basic.Label;
    import org.apache.wicket.markup.html.list.ListItem;
    import org.apache.wicket.markup.html.list.ListView;
    import org.apache.wicket.markup.html.panel.FeedbackPanel;
    import org.apache.wicket.model.IModel;
    import org.apache.wicket.request.mapper.parameter.PageParameters;
    import org.qi4j.sample.dcicargo.sample_b.communication.query.BookingQueries;
    import org.qi4j.sample.dcicargo.sample_b.context.interaction.booking.specification.DeriveUpdatedRouteSpecification;
    import org.qi4j.sample.dcicargo.sample_b.data.structure.cargo.RouteSpecification;
    import org.qi4j.sample.dcicargo.sample_b.data.structure.itinerary.Itinerary;

    /**
     * Re-route page
     *
     * Presents a list of possible routes a cargo can take that the user can choose from.
     *
     * Each route candidate is presented by a {@link RoutePanel}.
     */
    public class ReRouteCargoPage extends BookingBasePage
    {
        private FeedbackPanel feedback = new FeedbackPanel( "feedback" );

        public ReRouteCargoPage( PageParameters parameters )
        {
            final String trackingIdString = parameters.get( 0 ).toString();

            add( new Label( "trackingId", trackingIdString ) );

            add( new FeedbackPanel( "feedback" ) );

            try
            {
                // Temporary routeSpec to get correct route candidates
                RouteSpecification tempRouteSpec = new DeriveUpdatedRouteSpecification( trackingIdString ).getRouteSpec();

                add( new ListView<IModel<Itinerary>>( "routes", query( BookingQueries.class ).routeCandidates( tempRouteSpec ) )
                {
                    @Override
                    protected void populateItem( ListItem<IModel<Itinerary>> item )
                    {
                        item.add( new RoutePanel( "route", trackingIdString, item.getModelObject(), item.getIndex() + 1 ) );
                    }
                } );
            }
            catch( Exception e )
            {
                logger.info( e.getMessage() );
                error( e.getMessage() );
                add( new WebMarkupContainer( "routes" ).add( new Label( "route" ) ) );
            }
        }
    }