com.marc.lastweek.web.pages.classifiedadslisting.ClassifiedAdsListPanel.java Source code

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Here is the source code for com.marc.lastweek.web.pages.classifiedadslisting.ClassifiedAdsListPanel.java

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/*
 * AdsListPanel.java
 * Copyright (c) 2009, Monte Alto Research Center, All Rights Reserved.
 *
 * This software is the confidential and proprietary information of
 * Monte Alto Research Center ("Confidential Information"). You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into
 * with Monte Alto Research Center
 */
package com.marc.lastweek.web.pages.classifiedadslisting;

import java.util.Calendar;
import java.util.Iterator;

import org.apache.commons.lang.time.DateUtils;
import org.apache.wicket.PageParameters;
import org.apache.wicket.behavior.SimpleAttributeModifier;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.link.BookmarkablePageLink;
import org.apache.wicket.markup.html.link.Link;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.markup.repeater.Item;
import org.apache.wicket.markup.repeater.data.DataView;
import org.apache.wicket.markup.repeater.data.IDataProvider;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.LoadableDetachableModel;
import org.joda.time.DateTime;

import com.marc.lastweek.business.entities.classifiedad.ClassifiedAd;
import com.marc.lastweek.business.views.classifiedad.FilterParameters;
import com.marc.lastweek.web.application.LastweekApplication;
import com.marc.lastweek.web.components.paginator.VerticalFancyPaginator;
import com.marc.lastweek.web.naming.PageParametersNaming;
import com.marc.lastweek.web.pages.classifiedad.ClassifiedAdDetailPage;
import com.marc.lastweek.web.util.ViewUtils;

public class ClassifiedAdsListPanel extends Panel {
    private static final long serialVersionUID = -2481706792408827434L;

    private static final int RESULTS_PER_PAGE = 5;

    public ClassifiedAdsListPanel(String id, final FilterParameters filterParameters) {
        super(id);

        WebMarkupContainer classifiedListBox = new WebMarkupContainer("classifiedListBox");
        DataView classifiedList = new DataView("classifiedAdsList",
                new FilterCalssifiedAdsProvider(filterParameters), RESULTS_PER_PAGE) {
            private static final long serialVersionUID = 8440379131631972878L;

            @Override
            protected void populateItem(Item item) {
                ClassifiedAd classifiedAd = (ClassifiedAd) item.getModelObject();

                PageParameters linkParameters = new PageParameters();
                linkParameters.put(PageParametersNaming.PARAM_NAME_CLASSIFIED_AD_ID, classifiedAd.getId());
                Link classifiedAdLink = (new BookmarkablePageLink("classifiedAdLink", ClassifiedAdDetailPage.class,
                        linkParameters));
                classifiedAdLink.add(new Label("classifiedAdTitle", ViewUtils.labelizer(classifiedAd.getTitle())));
                item.add(classifiedAdLink);

                item.add(new Label("classifiedAdPublicationDate",
                        ViewUtils.labelizer(classifiedAd.getPublicationDate())));

                Label description = new Label("classifiedAdDescription",
                        ViewUtils.getDigest(classifiedAd.getDescription()));
                description.setEscapeModelStrings(false);
                item.add(description);
                item.add(new Label("classifiedAdPrice", ViewUtils.labelizer(classifiedAd.getPrice())));

                if (item.getIndex() % 2 == 1) {
                    item.add(new SimpleAttributeModifier("class", "classified-ad-summary-alt"));
                }
            }
        };
        classifiedListBox.add(classifiedList);
        classifiedListBox.setOutputMarkupId(true);
        this.add(classifiedListBox);

        VerticalFancyPaginator paginationLinks = new VerticalFancyPaginator("paginationLinks", classifiedList);
        this.add(paginationLinks);

        // No results
        WebMarkupContainer noResultsDiv = new WebMarkupContainer("noResults");
        this.add(noResultsDiv);

        if (classifiedList.getDataProvider().size() != 0) {
            noResultsDiv.setVisible(false);
        } else {
            paginationLinks.setVisible(false);
        }

    }

    class FilterCalssifiedAdsProvider implements IDataProvider {
        private static final long serialVersionUID = 2434577380158362087L;

        private FilterParameters filterParameters;
        private Integer resultsCount;
        private Calendar date;

        public FilterCalssifiedAdsProvider(FilterParameters filterParameters) {
            super();
            this.filterParameters = filterParameters;
            DateTime now = new DateTime(Calendar.getInstance());
            this.date = DateUtils.truncate(now.minusWeeks(1).toCalendar(getLocale()), Calendar.DAY_OF_MONTH);
        }

        @SuppressWarnings("unchecked")
        public Iterator iterator(int start, int count) {
            return LastweekApplication.get().getClassifiedAdsService()
                    .findClassifiedAdsByFilterParameters(this.filterParameters, start, count, this.date).iterator();
        }

        public int size() {
            if (this.resultsCount == null) {
                this.resultsCount = LastweekApplication.get().getClassifiedAdsService()
                        .countClassifiedAdsByFilterParameters(this.filterParameters, this.date);
            }
            return this.resultsCount.intValue();
        }

        public IModel model(Object object) {
            return new ClassifiedAdModel((ClassifiedAd) object);
        }

        protected class ClassifiedAdModel extends LoadableDetachableModel {
            private static final long serialVersionUID = -4307533817106370972L;

            private Long id;

            public ClassifiedAdModel(ClassifiedAd classified) {
                this.id = classified.getId();
            }

            @Override
            protected Object load() {
                return LastweekApplication.get().getGeneralService().find(ClassifiedAd.class, this.id);
            }
        }

        public void detach() {
            //Not needed            
        }
    }

}