D-Net

package eu.dnetlib.repo.manager.client.enrichcontent;

import com.google.gwt.core.client.GWT;

import com.google.gwt.dom.client.Document;

import com.google.gwt.user.client.rpc.AsyncCallback;

import com.google.gwt.user.client.ui.FlowPanel;

import com.google.gwt.user.client.ui.HTML;

import com.google.gwt.user.client.ui.Widget;

import eu.dnetlib.gwt.client.help.HelpService;

import eu.dnetlib.gwt.client.help.HelpServiceAsync;

import eu.dnetlib.repo.manager.client.AbstractRepositoryManagerWidget;

import eu.dnetlib.repo.manager.client.HelpCallback;

import eu.dnetlib.repo.manager.client.RepositoryManagerWidget;

import eu.dnetlib.repo.manager.client.services.BrokerService;

import eu.dnetlib.repo.manager.client.services.BrokerServiceAsync;

import eu.dnetlib.repo.manager.shared.Tuple;

import eu.dnetlib.repo.manager.shared.broker.BrowseEntry;

import org.gwtbootstrap3.client.ui.Alert;

import org.gwtbootstrap3.client.ui.constants.AlertType;

import java.util.List;

/**

 * Created by stefania on 10/31/16.

 */

public class SelectTopicWidget extends AbstractRepositoryManagerWidget implements RepositoryManagerWidget {

    private String parentToken = "";

    private String restToken = "";

    private FlowPanel selectTopicBoxContent = new FlowPanel();

    private Alert errorAlert = new Alert();

    private static HelpServiceAsync helpService = GWT.create(HelpService.class);

    private static BrokerServiceAsync brokerService = GWT.create(BrokerService.class);

    public SelectTopicWidget() {

        super();

        //TODO find datasource name?

        HTML title = new HTML("<h1 class=\"uk-article-title\">Topics for datasource</h1>");

        title.addStyleName("uk-margin-medium-bottom");

        contentPanel.add(title);

        errorAlert.setType(AlertType.DANGER);

        errorAlert.setDismissable(false);

        errorAlert.setVisible(false);

        selectTopicBoxContent.add(errorAlert);

        contentPanel.add(selectTopicBoxContent);

    }

    @Override

    public void clear() {

        selectTopicBoxContent.clear();

        errorAlert.setVisible(false);

        gridPanel.remove(helpPanel);

    }

    @Override

    public void reload() {

        Document.get().getElementById("headerNoTransparent").removeClassName("tm-header-transparent");

        selectTopicBoxContent.add(errorAlert);

        helpService.getHelpById(parentToken + "_selectTopic", new HelpCallback(helpPanel, gridPanel));

        final HTML loadingWheel = new HTML("<div class=\"loader-big\" style=\"text-align: center; padding-top: 170px; " +

                "color: rgb(47, 64, 80); font-weight: bold;\">Retrieving topics...</div>" +

                "<div class=\"whiteFilm\"></div>");

        selectTopicBoxContent.addStyleName("loading-big");

        selectTopicBoxContent.add(loadingWheel);

        brokerService.getTopicsForDatasource(restToken, new AsyncCallback<List<BrowseEntry>>() {

            @Override

            public void onFailure(Throwable caught) {

                selectTopicBoxContent.removeStyleName("loading-big");

                selectTopicBoxContent.remove(loadingWheel);

                errorAlert.setText("System error retrieving topics for datasources.");

                errorAlert.setVisible(true);

            }

            @Override

            public void onSuccess(List<BrowseEntry> browseEntries) {

                selectTopicBoxContent.removeStyleName("loading-big");

                selectTopicBoxContent.remove(loadingWheel);

                final FlowPanel topicsList = new FlowPanel();

                createTopicsList(browseEntries, topicsList);

                selectTopicBoxContent.add(topicsList);

            }

        });

    }

    @Override

    public void setToken(String parentToken, String rest) {

        this.parentToken = parentToken;

        this.restToken = rest;

    }

    @Override

    public void afterAdditionToRootPanel() {

    }

    private void createTopicsList(List<BrowseEntry> browseEntries, FlowPanel topicsList) {

        topicsList.addStyleName("uk-grid-margin uk-grid uk-grid-stack repos-list");

        if(browseEntries.isEmpty()) {

            topicsList.add(new HTML("No topics were found for this datasource"));

        } else {

            long total = 0;

            FlowPanel colPanel = new FlowPanel();

            colPanel.addStyleName("uk-width-1-1@m uk-first-column");

            topicsList.add(colPanel);

            FlowPanel divPanel = new FlowPanel();

            divPanel.addStyleName("uk-overflow-auto uk-scrollspy-inview uk-animation-slide-top-medium");

            colPanel.add(divPanel);

            String content = "<table class=\"uk-table uk-table-striped uk-table-middle\">" +

                    "<thead><tr><th>Topic</th><th class=\"uk-text-nowrap\"># of events</th>" +

                    "</tr></thead>";

            content += "<tbody>";

            for(BrowseEntry browseEntry : browseEntries) {

                content += "<tr class=\"el-item\">" +

                        "<td class=\"uk-text-nowrap uk-table-shrink\">\n" +

                        "<a href=\"#" + parentToken + "/" + restToken + "/" +browseEntry.getValue() + "\" class=\"el-link\">" +

                        browseEntry.getValue() + "</a>" +

                        "</td>" +

                        "<td class=\"uk-text-nowrap uk-table-shrink\">\n" +

                        "<div class=\"el-title\">" + browseEntry.getSize() + "</div>" +

                        "</td>" +

                        "</tr>";

                total += browseEntry.getSize();

            }

            content += "<tr class=\"el-item footers\">" +

                    "<td class=\"uk-text-nowrap uk-table-shrink\">\n" +

                    "<div class=\"el-title\">Total</div>" +

                    "</td>" +

                    "<td class=\"uk-text-nowrap uk-table-shrink\">\n" +

                    "<div class=\"el-title\">" + total + "</div>" +

                    "</td>" +

                    "</tr>";

            content += "</tbody></table>";

            HTML reposListHTML = new HTML();

            reposListHTML.setHTML(content);

            divPanel.add(reposListHTML);

        }

    }

}