/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports 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.
*
* JasperReports 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 JasperReports. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.jasperreports.swing;
import java.io.File;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.ResourceBundle;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.util.FileResolver;
import net.sf.jasperreports.engine.util.JRLoader;
import net.sf.jasperreports.engine.util.SimpleFileResolver;
import net.sf.jasperreports.engine.xml.JRPrintXmlLoader;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* @author Teodor Danciu (teodord@users.sourceforge.net)
* @version $Id: JRViewerController.java 3941 2010-08-20 10:55:10Z teodord $
*/
public class JRViewerController
{
private static final Log log = LogFactory.getLog(JRViewerController.class);
protected static final int TYPE_FILE_NAME = 1;
protected static final int TYPE_INPUT_STREAM = 2;
protected static final int TYPE_OBJECT = 3;
private ResourceBundle resourceBundle;
private Locale locale;
private final List listeners = new ArrayList();
protected int type = TYPE_FILE_NAME;
protected boolean isXML;
protected String reportFileName;
protected SimpleFileResolver fileResolver;
protected boolean reloadSupported;
private JasperPrint jasperPrint;
private int pageIndex;
private float zoom;
private boolean fitPage;
private boolean fitWidth;
public JRViewerController(Locale locale, ResourceBundle resBundle)
{
if (locale != null)
{
this.locale = locale;
}
else
{
this.locale = Locale.getDefault();
}
if (resBundle == null)
{
this.resourceBundle = ResourceBundle.getBundle("net/sf/jasperreports/view/viewer", getLocale());
}
else
{
this.resourceBundle = resBundle;
}
}
public void addListener(JRViewerListener listener)
{
listeners.add(listener);
}
public boolean removeListener(JRViewerListener listener)
{
return listeners.remove(listener);
}
protected void fireListeners(int eventCode)
{
if (!listeners.isEmpty())
{
JRViewerEvent event = new JRViewerEvent(this, eventCode);
for (Iterator it = listeners.iterator(); it.hasNext();)
{
JRViewerListener listener = (JRViewerListener) it.next();
listener.viewerEvent(event);
}
}
}
public void loadReport(String fileName, boolean isXmlReport) throws JRException
{
if (isXmlReport)
{
jasperPrint = JRPrintXmlLoader.load(fileName);
}
else
{
jasperPrint = (JasperPrint)JRLoader.loadObject(fileName);
}
type = TYPE_FILE_NAME;
this.isXML = isXmlReport;
reportFileName = fileName;
fileResolver = new SimpleFileResolver(Arrays.asList(new File[]{new File(fileName).getParentFile(), new File(".")}));
fileResolver.setResolveAbsolutePath(true);
reloadSupported = true;
fireListeners(JRViewerEvent.EVENT_REPORT_LOADED);
setPageIndex(0);
}
public void loadReport(InputStream is, boolean isXmlReport) throws JRException
{
if (isXmlReport)
{
jasperPrint = JRPrintXmlLoader.load(is);
}
else
{
jasperPrint = (JasperPrint)JRLoader.loadObject(is);
}
type = TYPE_INPUT_STREAM;
this.isXML = isXmlReport;
reloadSupported = false;
fireListeners(JRViewerEvent.EVENT_REPORT_LOADED);
setPageIndex(0);
}
public void loadReport(JasperPrint jrPrint)
{
jasperPrint = jrPrint;
type = TYPE_OBJECT;
isXML = false;
reloadSupported = false;
fireListeners(JRViewerEvent.EVENT_REPORT_LOADED);
setPageIndex(0);
}
public void reload()
{
if (type == TYPE_FILE_NAME)
{
try
{
loadReport(reportFileName, isXML);
}
catch (JRException e)
{
if (log.isDebugEnabled())
{
log.debug("Reload failed.", e);
}
jasperPrint = null;
setPageIndex(0);
refreshPage();
fireListeners(JRViewerEvent.EVENT_REPORT_LOAD_FAILED);
}
forceRefresh();
}
}
public boolean hasPages()
{
return jasperPrint != null &&
jasperPrint.getPages() != null &&
jasperPrint.getPages().size() > 0;
}
public void refreshPage()
{
fireListeners(JRViewerEvent.EVENT_REFRESH_PAGE);
}
protected void forceRefresh()
{
zoom = 0;//force pageRefresh()
setZoomRatio(1);
}
public void setZoomRatio(float newZoom)
{
if (newZoom > 0)
{
fitPage = false;
fitWidth = false;
float old = zoom;
zoom = newZoom;
fireListeners(JRViewerEvent.EVENT_ZOOM_CHANGED);
if (zoom != old)
{
refreshPage();
}
}
}
public void setPageIndex(int index)
{
if (hasPages())
{
if (index >= 0 && index < jasperPrint.getPages().size())
{
pageIndex = index;
fireListeners(JRViewerEvent.EVENT_PAGE_CHANGED);
}
}
else
{
fireListeners(JRViewerEvent.EVENT_PAGE_CHANGED);
}
}
public ResourceBundle getResourceBundle()
{
return resourceBundle;
}
public Locale getLocale()
{
return locale;
}
public String getBundleString(String key)
{
return resourceBundle.getString(key);
}
public FileResolver getFileResolver()
{
return type == TYPE_FILE_NAME ? fileResolver : null;
}
public JasperPrint getJasperPrint()
{
return jasperPrint;
}
public int getPageCount()
{
return jasperPrint.getPages().size();
}
public void clear()
{
jasperPrint = null;
}
public int getPageIndex()
{
return pageIndex;
}
public float getZoom()
{
return zoom;
}
public boolean isReloadSupported()
{
return reloadSupported;
}
public boolean isFitPage()
{
return fitPage;
}
public boolean isFitWidth()
{
return fitWidth;
}
public void fitPage()
{
fireListeners(JRViewerEvent.EVENT_FIT_PAGE);
fitPage = true;
}
public void fitWidth()
{
fireListeners(JRViewerEvent.EVENT_FIT_WIDTH);
fitWidth = true;
}
}