org.daxplore.presenter.client.ui.ImageButtonPanel.java Source code

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Here is the source code for org.daxplore.presenter.client.ui.ImageButtonPanel.java

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/*
 *  Copyright 2012 Axel Winkler, Daniel Dunr
 * 
 *  This file is part of Daxplore Presenter.
 *
 *  Daxplore Presenter 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 2.1 of the License, or
 *  (at your option) any later version.
 *
 *  Daxplore Presenter 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 Daxplore Presenter.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.daxplore.presenter.client.ui;

import org.daxplore.presenter.client.event.ImageButtonEvent;
import org.daxplore.presenter.client.event.ImageButtonEvent.ImageButtonAction;
import org.daxplore.presenter.client.event.ImageButtonHandler;
import org.daxplore.presenter.client.event.QueryUpdateEvent;
import org.daxplore.presenter.client.event.QueryUpdateHandler;
import org.daxplore.presenter.client.resources.UIResources;
import org.daxplore.presenter.client.resources.UITexts;
import org.daxplore.presenter.shared.PrefixProperties;
import org.daxplore.presenter.shared.QueryDefinition;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.http.client.URL;
import com.google.gwt.i18n.client.LocaleInfo;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.inject.Inject;
import com.google.web.bindery.event.shared.EventBus;

/**
 * A widget that contains a number of image buttons.
 * 
 * <p>It defines buttons for printing, downloading as csv and embedding.</p>
 * 
 * <p><b>Note:</b> This is not supposed to be a general-purpose widget. It
 * just creates a number of hard-coded buttons with specific functions that are
 * needed in the Daxplore client.</p>
 */
public class ImageButtonPanel extends Composite implements QueryUpdateHandler, ImageButtonHandler {

    private String baseUrl;

    private HorizontalPanel mainPanel;
    private QueryDefinition queryDefinition;
    private PrefixProperties prefixProperties;

    private WidgetAnchor csvWidgetAnchor;

    @Inject
    protected ImageButtonPanel(final EventBus eventBus, UITexts uiTexts, UIResources uiResources,
            EmbedPopup embedPopup, PrefixProperties prefixProperties) {
        this.prefixProperties = prefixProperties;

        baseUrl = GWT.getHostPageBaseURL(); // http://example.com/p/
        baseUrl = baseUrl.substring(0, baseUrl.length() - 2); // http://example.com/

        //      Image buttonImage = new Image(uiResources.printButtonImage());
        //      ImageButton printButton = new ImageButton(buttonImage, uiTexts.printButtonTitle());
        //      printButton.addClickHandler(new ClickHandler() {
        //         @Override
        //         public void onClick(ClickEvent event) {
        //            eventBus.fireEvent(new ImageButtonEvent(ImageButtonAction.PRINT));
        //         }
        //      });

        Image buttonImage = new Image(uiResources.csvButtonImage());
        ImageButton csvButton = new ImageButton(buttonImage, uiTexts.csvButtonTitle());
        csvWidgetAnchor = new WidgetAnchor("", csvButton);

        buttonImage = new Image(uiResources.embedButtonImage());
        ImageButton embedButton = new ImageButton(buttonImage, uiTexts.embedButtonTitle());
        embedButton.addClickHandler(new ClickHandler() {
            @Override
            public void onClick(ClickEvent event) {
                eventBus.fireEvent(new ImageButtonEvent(ImageButtonAction.EMBED));
            }
        });
        ButtonWithPopup embedButtonPopup = new ButtonWithPopup(embedButton, embedPopup);

        mainPanel = new HorizontalPanel();
        //      mainPanel.add(printButton);
        mainPanel.add(csvWidgetAnchor);
        mainPanel.add(embedButtonPopup);

        mainPanel.setSpacing(5);

        initWidget(mainPanel);

        setStyleName("daxplore-imagebuttonpanel");

        QueryUpdateEvent.register(eventBus, this);
        ImageButtonEvent.register(eventBus, this);
    }

    private String getCsvDownloadSrc() {
        String fileName = prefixProperties.getPageTitle() + " - " + queryDefinition.getPerspectiveShortText()
                + " - " + queryDefinition.getQuestionShortText() + ".csv";
        fileName = URL.encodePathSegment(fileName);
        return baseUrl + "getCsv/" + fileName + "?q=" + queryDefinition.getAsString() + "&l="
                + LocaleInfo.getCurrentLocale().getLocaleName() + "&prefix=" + prefixProperties.getPrefix();
    }

    private void openPrintPage() {
        if (queryDefinition != null) {
            String url = baseUrl + "print?q=" + queryDefinition.getAsString() + "&l="
                    + LocaleInfo.getCurrentLocale().getLocaleName();
            String name = "_blank";
            String features = "";
            Window.open(url, name, features);
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void onImageButtonClick(ImageButtonEvent event) {
        switch (event.getAction()) {
        case PRINT:
            openPrintPage();
            break;
        default:
            break;
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void onQueryUpdate(QueryUpdateEvent event) {
        queryDefinition = event.getQueryDefinition();
        csvWidgetAnchor.setHref(getCsvDownloadSrc());
    }

}