org.efs.openreports.actions.ReportViewerAction.java Source code

Introduction

Here is the source code for org.efs.openreports.actions.ReportViewerAction.java

Source

/*
 * Copyright (C) 2004 Erik Swenson - erik@oreports.com
 * 
 * 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 2 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, write to the Free Software Foundation, Inc., 59 Temple
 * Place - Suite 330, Boston, MA 02111-1307, USA.
 *  
 */

package org.efs.openreports.actions;

import java.awt.image.BufferedImage;
import java.io.IOException;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;

import com.opensymphony.webwork.ServletActionContext;
import com.opensymphony.xwork.ActionContext;
import com.opensymphony.xwork.ActionSupport;

import org.apache.log4j.Logger;
import org.efs.openreports.ORStatics;
import org.efs.openreports.objects.Report;
import org.jfree.chart.encoders.SunPNGEncoderAdapter;

import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperPrintManager;

public class ReportViewerAction extends ActionSupport {
    protected static Logger log = Logger.getLogger(ReportViewerAction.class);

    private int pageIndex = 1;
    private int pageCount = 0;
    private float zoom = 1.0f;

    private String submitType;
    private Report report;

    public String execute() {
        JasperPrint jasperPrint = (JasperPrint) ActionContext.getContext().getSession().get(ORStatics.JASPERPRINT);

        report = (Report) ActionContext.getContext().getSession().get(ORStatics.REPORT);

        if (jasperPrint != null && jasperPrint.getPages() != null) {
            pageCount = jasperPrint.getPages().size();
        }

        if (!"image".equals(submitType))
            return SUCCESS;

        byte[] imageData = null;

        if (jasperPrint != null) {
            try {
                BufferedImage image = (BufferedImage) JasperPrintManager.printPageToImage(jasperPrint,
                        pageIndex - 1, zoom);
                imageData = new SunPNGEncoderAdapter().encode(image);
            } catch (Exception e) {
                addActionError(e.getMessage());
                log.error(e.toString());
            }
        }

        if (imageData != null) {

            HttpServletResponse response = ServletActionContext.getResponse();

            try {
                response.setContentLength(imageData.length);
                ServletOutputStream ouputStream = response.getOutputStream();
                ouputStream.write(imageData, 0, imageData.length);
                ouputStream.flush();
                ouputStream.close();
            } catch (IOException ioe) {
                log.warn(ioe.toString());
            }
        }

        return NONE;
    }

    public int getPageIndex() {
        return pageIndex;
    }

    public void setPageIndex(int pageIndex) {
        this.pageIndex = pageIndex;
    }

    public float getZoom() {
        return zoom;
    }

    public void setZoom(float zoom) {
        this.zoom = zoom;
    }

    public int getPageCount() {
        return pageCount;
    }

    public String getSubmitType() {
        return submitType;
    }

    public void setSubmitType(String submitType) {
        this.submitType = submitType;
    }

    public Report getReport() {
        return report;
    }

    public void setReport(Report report) {
        this.report = report;
    }
}