Package net.sf.jasperreports.swing

Source Code of net.sf.jasperreports.swing.JRViewer

/*
* 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/>.
*/

/*
* Contributors:
* Ryan Johnson - delscovich@users.sourceforge.net
* Carlton Moore - cmoore79@users.sourceforge.net
*  Petr Michalek - pmichalek@users.sourceforge.net
*/
package net.sf.jasperreports.swing;

import java.awt.Component;
import java.awt.Container;
import java.awt.event.KeyListener;
import java.io.InputStream;
import java.text.MessageFormat;
import java.util.Locale;
import java.util.ResourceBundle;

import javax.swing.JOptionPane;

import net.sf.jasperreports.engine.JRConstants;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.util.JRProperties;


/**
* @author Teodor Danciu (teodord@users.sourceforge.net)
* @version $Id: JRViewer.java 3659 2010-03-31 10:20:49Z shertage $
*/
public class JRViewer extends javax.swing.JPanel implements JRViewerListener
{
  private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;

  /**
   * Maximum size (in pixels) of a buffered image that would be used by {@link JRViewer JRViewer} to render a report page.
   * <p>
   * If rendering a report page would require an image larger than this threshold
   * (i.e. image width x image height > maximum size), the report page will be rendered directly on the viewer component.
   * </p>
   * <p>
   * If this property is zero or negative, buffered images will never be user to render a report page.
   * By default, this property is set to 0.
   * </p>
   */
  public static final String VIEWER_RENDER_BUFFER_MAX_SIZE = JRProperties.PROPERTY_PREFIX + "viewer.render.buffer.max.size";

  protected JRViewerController viewerContext;

  /** Creates new form JRViewer */
  public JRViewer(String fileName, boolean isXML) throws JRException
  {
    this(fileName, isXML, null);
  }


  /** Creates new form JRViewer */
  public JRViewer(InputStream is, boolean isXML) throws JRException
  {
    this(is, isXML, null);
  }


  /** Creates new form JRViewer */
  public JRViewer(JasperPrint jrPrint)
  {
    this(jrPrint, null);
  }


  /** Creates new form JRViewer */
  public JRViewer(String fileName, boolean isXML, Locale locale) throws JRException
  {
    this(fileName, isXML, locale, null);
  }


  /** Creates new form JRViewer */
  public JRViewer(InputStream is, boolean isXML, Locale locale) throws JRException
  {
    this(is, isXML, locale, null);
  }


  /** Creates new form JRViewer */
  public JRViewer(JasperPrint jrPrint, Locale locale)
  {
    this(jrPrint, locale, null);
  }


  /** Creates new form JRViewer */
  public JRViewer(String fileName, boolean isXML, Locale locale, ResourceBundle resBundle) throws JRException
  {
    initViewerContext(locale, resBundle);

    initComponents();

    viewerContext.loadReport(fileName, isXML);
   
    tlbToolBar.init();
  }


  /** Creates new form JRViewer */
  public JRViewer(InputStream is, boolean isXML, Locale locale, ResourceBundle resBundle) throws JRException
  {
    initViewerContext(locale, resBundle);

    initComponents();

    viewerContext.loadReport(is, isXML);
   
    tlbToolBar.init();
  }


  /** Creates new form JRViewer */
  public JRViewer(JasperPrint jrPrint, Locale locale, ResourceBundle resBundle)
  {
    initViewerContext(locale, resBundle);

    initComponents();

    viewerContext.loadReport(jrPrint);
   
    tlbToolBar.init();
  }

  protected void initViewerContext(Locale locale, ResourceBundle resBundle)
  {
    viewerContext = new JRViewerController(locale, resBundle);
    setLocale(viewerContext.getLocale());
    viewerContext.addListener(this);
  }


  /**
   *
   */
  public void clear()
  {
    emptyContainer(this);
    viewerContext.clear();
  }


  /**
   *
   */
  protected String getBundleString(String key)
  {
    return viewerContext.getBundleString(key);
  }


  /** This method is called from within the constructor to
   * initialize the form.
   * WARNING: Do NOT modify this code. The content of this method is
   * always regenerated by the Form Editor.
   */
  // <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
  private void initComponents() {
    tlbToolBar = createToolbar();

    pnlMain = createViewerPanel();

    lblStatus = new javax.swing.JLabel();
    pnlStatus = new javax.swing.JPanel();

    pnlStatus.setLayout(new java.awt.FlowLayout(java.awt.FlowLayout.CENTER, 0, 0));

    lblStatus.setFont(new java.awt.Font("Dialog", 1, 10));
    lblStatus.setText("Page i of n");
    pnlStatus.add(lblStatus);

    setLayout(new java.awt.BorderLayout());

    add(tlbToolBar, java.awt.BorderLayout.NORTH);
    add(pnlMain, java.awt.BorderLayout.CENTER);
    add(pnlStatus, java.awt.BorderLayout.SOUTH);
   
    KeyListener keyNavigationListener = pnlMain.getKeyNavigationListener();
    addKeyListener(keyNavigationListener);
    tlbToolBar.addComponentKeyListener(keyNavigationListener);
  }
  // </editor-fold>//GEN-END:initComponents

  protected JRViewerToolbar createToolbar()
  {
    return new JRViewerToolbar(viewerContext);
  }

  protected JRViewerPanel createViewerPanel()
  {
    return new JRViewerPanel(viewerContext);
  }

  public void setFitWidthZoomRatio()
  {
    pnlMain.setFitWidthZoomRatio();
  }

  public void setFitPageZoomRatio()
  {
    pnlMain.setFitPageZoomRatio();
  }

  /**
  */
  public int getPageIndex()
  {
    return viewerContext.getPageIndex();
  }


  /**
  */
  private void emptyContainer(Container container)
  {
    Component[] components = container.getComponents();

    if (components != null)
    {
      for(int i = 0; i < components.length; i++)
      {
        if (components[i] instanceof Container)
        {
          emptyContainer((Container)components[i]);
        }
      }
    }

    components = null;
    container.removeAll();
    container = null;
  }

  public void setZoomRatio(float zoomRatio)
  {
    viewerContext.setZoomRatio(zoomRatio);
  }

  public void pageChanged()
  {
    if (viewerContext.hasPages())
    {
      lblStatus.setText(
        MessageFormat.format(
          getBundleString("page"),
          new Object[]{Integer.valueOf(viewerContext.getPageIndex() + 1),
            Integer.valueOf(viewerContext.getPageCount())}
          )
        );
    }
    else
    {
      lblStatus.setText("");
    }
  }
 
  public void viewerEvent(JRViewerEvent event)
  {
    switch (event.getCode())
    {
    case JRViewerEvent.EVENT_PAGE_CHANGED:
      pageChanged();
      break;
    case JRViewerEvent.EVENT_REPORT_LOAD_FAILED:
      JOptionPane.showMessageDialog(this, getBundleString("error.loading"));
      break;
    }
  }

  // Variables declaration - do not modify//GEN-BEGIN:variables
  protected javax.swing.JLabel lblStatus;
  private JRViewerPanel pnlMain;
  protected javax.swing.JPanel pnlStatus;
  protected JRViewerToolbar tlbToolBar;
  // End of variables declaration//GEN-END:variables

}
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