001    /*
002     * Databinder: a simple bridge from Wicket to Hibernate
003     * Copyright (C) 2006  Nathan Hamblen nathan@technically.us
004    
005     * This library is free software; you can redistribute it and/or
006     * modify it under the terms of the GNU Lesser General Public
007     * License as published by the Free Software Foundation; either
008     * version 2.1 of the License, or (at your option) any later version.
009     * 
010     * This library is distributed in the hope that it will be useful,
011     * but WITHOUT ANY WARRANTY; without even the implied warranty of
012     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013     * Lesser General Public License for more details.
014     * 
015     * You should have received a copy of the GNU Lesser General Public
016     * License along with this library; if not, write to the Free Software
017     * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
018     */
019    package net.databinder.components;
020    
021    import org.apache.wicket.Component;
022    import org.apache.wicket.extensions.markup.html.repeater.data.table.filter.ChoiceFilter;
023    import org.apache.wicket.extensions.markup.html.repeater.data.table.filter.ChoiceFilteredPropertyColumn;
024    import org.apache.wicket.extensions.markup.html.repeater.data.table.filter.FilterForm;
025    import org.apache.wicket.markup.html.form.ChoiceRenderer;
026    import org.apache.wicket.markup.html.form.IChoiceRenderer;
027    import org.apache.wicket.model.IModel;
028    import org.apache.wicket.model.PropertyModel;
029    
030    /**
031     * DataTable property filter column that works with joined entities instead of string properties.
032     * @author Mark Southern
033     */
034    public class ObjectFilteredPropertyColumn extends ChoiceFilteredPropertyColumn {
035            private ChoiceRenderer choiceRenderer;
036            private String displayProperty;
037    
038            public ObjectFilteredPropertyColumn(IModel displayModel, String sortProperty, String displayProperty, String propertyExpression, String filterLabelProperty, IModel filterChoices) {
039                    super(displayModel,sortProperty,propertyExpression,filterChoices);
040                    choiceRenderer = new ChoiceRenderer(filterLabelProperty);
041                    this.displayProperty = displayProperty;
042            }
043    
044            protected IChoiceRenderer getChoiceRenderer() {
045                    return choiceRenderer;
046            }
047    
048            protected IModel createLabelModel(IModel embeddedModel) {
049                    return new PropertyModel(embeddedModel, displayProperty);
050            }
051    
052            public Component getFilter(String componentId, FilterForm form) {
053                    ChoiceFilter cf = (ChoiceFilter) super.getFilter(componentId, form);
054                    cf.getChoice().setNullValid(true);
055                    return cf;
056            }
057    }