org.geomajas.gwt2.plugin.print.client.widget.PrintWidgetPresenterImpl.java Source code

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Here is the source code for org.geomajas.gwt2.plugin.print.client.widget.PrintWidgetPresenterImpl.java

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/*
 * This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
 *
 * Copyright 2008-2014 Geosparc nv, http://www.geosparc.com/, Belgium.
 *
 * The program is available in open source according to the GNU Affero
 * General Public License. All contributions in this program are covered
 * by the Geomajas Contributors License Agreement. For full licensing
 * details, see LICENSE.txt in the project root.
 */
package org.geomajas.gwt2.plugin.print.client.widget;

import com.google.gwt.core.client.Callback;
import com.google.gwt.event.shared.HandlerManager;
import com.google.gwt.event.shared.HandlerRegistration;
import org.geomajas.gwt2.client.map.MapPresenter;
import org.geomajas.gwt2.plugin.print.client.Print;
import org.geomajas.gwt2.plugin.print.client.event.PrintRequestFinishedEvent;
import org.geomajas.gwt2.plugin.print.client.event.PrintRequestInfo;
import org.geomajas.gwt2.plugin.print.client.layerbuilder.PrintableLayerBuilder;
import org.geomajas.gwt2.plugin.print.client.template.PrintableMapBuilder;
import org.geomajas.gwt2.plugin.print.client.template.TemplateBuilder;
import org.geomajas.gwt2.plugin.print.client.event.DefaultPrintRequestHandler;
import org.geomajas.gwt2.plugin.print.client.event.PrintFinishedInfo;
import org.geomajas.gwt2.plugin.print.client.event.PrintRequestHandler;
import org.geomajas.gwt2.plugin.print.client.event.PrintRequestStartedEvent;
import org.geomajas.gwt2.plugin.print.client.template.impl.DefaultPrintableMapBuilder;
import org.geomajas.gwt2.plugin.print.client.template.impl.DefaultTemplateBuilder;
import org.geomajas.gwt2.plugin.print.client.template.TemplateBuilderFactory;

/**
 * Default implementation of {@link PrintWidgetPresenter}.
 * 
 * @author An Buyle
 * @author Jan Venstermans
 * 
 */
public class PrintWidgetPresenterImpl implements PrintWidgetPresenter {

    /* Fields that are set on construction */

    private MapPresenter mapPresenter;

    private String applicationId;

    private PrintWidgetView view;

    /**
     *  Field used for creation of {@link org.geomajas.gwt2.plugin.print.command.dto.PrintTemplateInfo} objects.
     *  It is created with a default value.
     */
    private PrintableMapBuilder mapBuilder = new DefaultPrintableMapBuilder();

    /**
     *  Field used for creation of {@link org.geomajas.gwt2.plugin.print.command.dto.PrintTemplateInfo} objects.
     *  It is created with a default value. This defaults can be overwritten via the setter
     */
    private TemplateBuilderFactory templateBuilderFactory = new TemplateBuilderFactory() {
        @Override
        public TemplateBuilder createTemplateBuilder(PrintableMapBuilder mapBuilder) {
            return new DefaultTemplateBuilder(mapBuilder);
        }
    };

    /* events handler */
    private HandlerManager handlerManager;

    /**
     * Default constructor.
     *
     * @param mapPresenter mapPresenter of the map to be printed.
     * @param applicationId Id of the application whose elements need to be printed.
     * @param view view
     */
    public PrintWidgetPresenterImpl(MapPresenter mapPresenter, String applicationId, PrintWidgetView view) {
        this.view = view;
        this.mapPresenter = mapPresenter;
        this.applicationId = applicationId;
        handlerManager = new HandlerManager(this);
        bind();
    }

    private void bind() {
        view.setHandler(this);
        // set default handler
        setPrintRequestHandler(new DefaultPrintRequestHandler());
    }

    @Override
    public void registerLayerBuilder(PrintableLayerBuilder layerBuilder) {
        mapBuilder.registerLayerBuilder(layerBuilder);
    }

    @Override
    public PrintWidgetView getView() {
        return view;
    }

    @Override
    public void setTemplateBuilderFactory(TemplateBuilderFactory templateBuilderFactory) {
        this.templateBuilderFactory = templateBuilderFactory;
    }

    @Override
    public void print() {
        if (mapPresenter != null) {
            PrintRequestInfo printRequestInfo = new PrintRequestInfo();
            printRequestInfo.setPostPrintAction(view.getPostPrintAction());
            printRequestInfo.setSync(view.isSync());
            printRequestInfo.setDpi(view.getDpi());
            printRequestInfo.setFileName(view.getFileName());
            printRequestInfo.setPrintTemplateInfo(Print.getInstance().getPrintUtil().createPrintTemplateInfo(
                    mapPresenter, applicationId, templateBuilderFactory.createTemplateBuilder(mapBuilder),
                    view.getTemplateBuilderDataProvider()));
            handlerManager.fireEvent(new PrintRequestStartedEvent(printRequestInfo));
            Print.getInstance().getPrintService().print(printRequestInfo, new Callback<PrintFinishedInfo, Void>() {
                @Override
                public void onFailure(Void reason) {
                    // do nothing
                }

                @Override
                public void onSuccess(PrintFinishedInfo printFinishedInfo) {
                    handlerManager.fireEvent(new PrintRequestFinishedEvent(printFinishedInfo));
                }
            });
        }
    }

    @Override
    public HandlerRegistration setPrintRequestHandler(PrintRequestHandler handler) {
        if (handlerManager.getHandlerCount(PrintRequestHandler.TYPE) > 0) {
            PrintRequestHandler previous = handlerManager.getHandler(PrintRequestHandler.TYPE, 0);
            handlerManager.removeHandler(PrintRequestHandler.TYPE, previous);
        }
        return handlerManager.addHandler(PrintRequestHandler.TYPE, handler);
    }
}