fr.putnami.pwt.doc.client.application.NewsPopup.java Source code

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Here is the source code for fr.putnami.pwt.doc.client.application.NewsPopup.java

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/**
 * This file is part of pwt-doc.
 *
 * pwt-doc is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * pwt-doc 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with pwt-doc.  If not, see <http://www.gnu.org/licenses/>.
 */
package fr.putnami.pwt.doc.client.application;

import java.util.Collections;
import java.util.List;

import com.google.common.collect.Lists;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.client.History;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.IsWidget;
import com.google.gwt.user.client.ui.Widget;

import fr.putnami.pwt.core.model.client.base.HasDrawable;
import fr.putnami.pwt.core.model.client.model.Model;
import fr.putnami.pwt.core.service.client.CallbackAdapter;
import fr.putnami.pwt.core.widget.client.Alert;
import fr.putnami.pwt.core.widget.client.Anchor;
import fr.putnami.pwt.core.widget.client.Modal;
import fr.putnami.pwt.core.widget.client.OutputList;
import fr.putnami.pwt.core.widget.client.OutputNumber;
import fr.putnami.pwt.core.widget.client.binder.UiBinderLocalized;
import fr.putnami.pwt.core.widget.client.event.AlertDismissEvent;
import fr.putnami.pwt.core.widget.client.event.ButtonEvent;
import fr.putnami.pwt.doc.client.rss.PwtDoucmentRssReader;
import fr.putnami.pwt.doc.client.rss.RssItem;
import fr.putnami.pwt.plugin.ga.client.GoogleAnalytics;

public class NewsPopup implements IsWidget, HasDrawable {

    interface Binder extends UiBinderLocalized<Widget, NewsPopup> {
        Binder BINDER = GWT.create(Binder.class);
    }

    public interface NotificationModel extends Model<RssItem> {
    }

    private final Model<RssItem> notificationModel = GWT.create(NotificationModel.class);

    @UiField
    Anchor<?> notificationWidget;
    @UiField
    OutputNumber notificationCount;

    @UiField
    Modal notificationModal;

    @UiField
    OutputList<RssItem> notificationList;
    @UiField
    Alert<RssItem> notificationListItem;

    private List<RssItem> notifications;

    private final PwtDoucmentRssReader rssReader = new PwtDoucmentRssReader("news-rss.xml");

    public NewsPopup() {
        Binder.BINDER.createAndBindUi(this);
        notificationList.initialize(notificationModel);
        notificationListItem.initialize(notificationModel);
        reload();
    }

    @Override
    public Widget asWidget() {
        return notificationWidget;
    }

    @UiHandler("notificationWidget")
    void onNotificationWidgetClicked(ClickEvent event) {
        if (notifications != null && notifications.size() > 0) {
            notificationModal.show();
            getGA().trackEvent("popup", "news");
        }
    }

    private void reload() {
        notifications = Lists.newArrayList();

        rssReader.load(new CallbackAdapter<List<RssItem>>() {
            @Override
            public void onSuccess(List<RssItem> result) {
                notifications = result;
                redraw();
            }
        });

        redraw();
    }

    @Override
    public void redraw() {
        if (notifications != null && notifications.size() > 0) {
            notificationList.edit(notifications);
            notificationCount.edit(notifications.size());
            notificationCount.setVisible(true);
        } else {
            notificationList.edit(Collections.EMPTY_LIST);
            notificationCount.setVisible(false);
            notificationCount.edit(0);
        }
    }

    @UiHandler("notificationListItem")
    void onNotificationClose(AlertDismissEvent event) {
        Alert<RssItem> closed = (Alert<RssItem>) event.getSource();
        rssReader.read(closed.getValue());
        notifications.remove(closed.getValue());
        redraw();
    }

    @UiHandler("seeMoreBtn")
    void onSeeMoreClick(ButtonEvent event) {
        RssItem item = event.getValue();
        getGA().trackEvent("read", "news" + item.getGuid());
        String link = item.getLink();
        if (link.startsWith("#!")) {
            History.newItem(link.substring(1));
        } else {
            Window.open(link, "_blank", "");
        }
    }

    private GoogleAnalytics getGA() {
        return GoogleAnalytics.get(ApplicationConfig.ANALYTICS_TRACKER_ID);
    }
}