source: vlo/branches/vlo-3.3-oeaw/vlo-web-app/src/main/java/eu/clarin/cmdi/vlo/wicket/panels/search/SearchFormPanel.java @ 6755

/*
 * Copyright (C) 2014 CLARIN
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package eu.clarin.cmdi.vlo.wicket.panels.search;

import eu.clarin.cmdi.vlo.JavaScriptResources;
import eu.clarin.cmdi.vlo.pojo.QueryFacetsSelection;
import eu.clarin.cmdi.vlo.service.solr.AutoCompleteService;
import java.util.Iterator;
import org.apache.wicket.Component;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.attributes.AjaxCallListener;
import org.apache.wicket.ajax.attributes.AjaxRequestAttributes;
import org.apache.wicket.ajax.markup.html.form.AjaxFallbackButton;
import org.apache.wicket.extensions.ajax.markup.html.autocomplete.AutoCompleteTextField;
import org.apache.wicket.markup.head.CssHeaderItem;
import org.apache.wicket.markup.head.IHeaderResponse;
import org.apache.wicket.markup.head.JavaScriptHeaderItem;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.panel.GenericPanel;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.PropertyModel;
import org.apache.wicket.spring.injection.annot.SpringBean;

/**
 * Form for textual query on the faceted search page
 *
 * @author twagoo
 */
public abstract class SearchFormPanel extends GenericPanel<QueryFacetsSelection> {

    @SpringBean
    private AutoCompleteService autoCompleteDao;

    //private final AjaxIndicatorAppender indicatorAppender = new AjaxIndicatorAppender();
    public SearchFormPanel(String id, IModel<QueryFacetsSelection> model) {
        super(id, model);

        final Form<QueryFacetsSelection> form = new Form<>("search", model);

        // Bind search field to 'query' property of model
        form.add(new AutoCompleteTextField("query", new PropertyModel<String>(model, "query")) {

            @Override
            protected Iterator<String> getChoices(String input) {
                return autoCompleteDao.getChoices(input);
            }
            
        });

        // Button allows partial updates but can fall back to a full (non-JS) refresh
        form.add(new AjaxFallbackButton("searchSubmit", form) {

            @Override
            protected void onSubmit(AjaxRequestTarget target, Form<?> form) {
                SearchFormPanel.this.onSubmit(target);
            }

            @Override
            protected void updateAjaxAttributes(AjaxRequestAttributes attributes) {
                super.updateAjaxAttributes(attributes);

                // listener to start/stop indicating progress
                AjaxCallListener listener = new AjaxCallListener() {

                    @Override
                    public CharSequence getBeforeHandler(Component component) {
                        return ("startSearch();");
                    }

                    @Override
                    public CharSequence getCompleteHandler(Component component) {
                        return ("endSearch();");
                    }

                };
                attributes.getAjaxCallListeners().add(listener);
            }

        }
        );

        add(form);
    }
   
    protected abstract void onSubmit(AjaxRequestTarget target);

    @Override
    public void renderHead(IHeaderResponse response) {
        // include script that activates the help button tooltip and JQuery UI on which it depends
        response.render(CssHeaderItem.forReference(JavaScriptResources.getJQueryUICSS()));
        response.render(JavaScriptHeaderItem.forReference(JavaScriptResources.getJQueryUIJS()));
        response.render(JavaScriptHeaderItem.forReference(JavaScriptResources.getSyntaxHelpJS()));
        response.render(JavaScriptHeaderItem.forReference(JavaScriptResources.getSearchFormJS()));
    }
}