/*
* Chart2DActionSaveEpsSingleton,
* singleton action that saves the chart to an encapsulated postscript
* file.
* Copyright (C) 2007 - 2011 Achim Westermann
*
* This library 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.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* If you modify or optimize the code in a useful way please let me know.
* Achim.Westermann@gmx.de
*
*/
package info.monitorenter.gui.chart.events;
import info.monitorenter.gui.chart.Chart2D;
import info.monitorenter.gui.chart.io.FileFilterExtensions;
import java.awt.event.ActionEvent;
import java.beans.PropertyChangeEvent;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JFileChooser;
import javax.swing.filechooser.FileFilter;
import org.apache.xmlgraphics.java2d.ps.EPSDocumentGraphics2D;
/**
* Singleton Action that saves the current chart to an encapsulated
* postscript file at the the location specified by showing a modal file chooser
* save dialog.
*
* Only one instance per target component may exist.
*
*
* @see info.monitorenter.gui.chart.events.Chart2DActionSetCustomGridColor
* @author Achim Westermann
* @version $Revision: 1.4 $
*/
public final class Chart2DActionSaveEpsSingletonApacheFop {
/**
* Dummy action that is always disabled.
*
*
*/
private static class ActionDisabledDummy extends AbstractAction {
/** Generated serialVersionUID. */
private static final long serialVersionUID = 5537391176736852739L;
/**
* Creates an instance with the given name.
*
*
* @param name
* the name to use.
*/
public ActionDisabledDummy(final String name) {
super(name);
}
/**
* @see java.awt.event.ActionListener#actionPerformed(ActionEvent)
*/
public void actionPerformed(final ActionEvent e) {
// nop
}
/**
* @see AbstractAction#isEnabled()
*/
@Override
public boolean isEnabled() {
return false;
}
}
/**
* Implementation of the action that depends on jlibeps and must not be class
* loaded in case the corresponding classes are missing in the classpath.
*
*/
private static final class Chart2DActionSaveEps extends AChart2DAction {
/** Generated serialVersionUID. */
private static final long serialVersionUID = 4165725826047395414L;
/**
* The JFileChooser used to choose the location for saving
* snapshot images.
*
*/
private JFileChooser m_filechooser;
/**
* Create an Action that accesses the trace and identifies
* itself with the given action String.
*
*
* @param chart
* the target the action will work on
* @param colorName
* the descriptive String that will be displayed by
* {@link javax.swing.AbstractButton} subclasses that get this
* Action assigned (
* {@link javax.swing.AbstractButton#setAction(javax.swing.Action)}
* ).
*/
public Chart2DActionSaveEps(final Chart2D chart, final String colorName) {
super(chart, colorName);
chart.addPropertyChangeListener(Chart2D.PROPERTY_GRID_COLOR, this);
// configure the file chooser:
this.m_filechooser = new JFileChooser();
this.m_filechooser.setAcceptAllFileFilterUsed(false);
}
/**
* @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
*/
public void actionPerformed(final ActionEvent e) {
// clear file filters (uncool API)
FileFilter[] farr = this.m_filechooser.getChoosableFileFilters();
for (int i = 0; i < farr.length; i++) {
this.m_filechooser.removeChoosableFileFilter(farr[i]);
}
String extension = "eps";
this.m_filechooser
.addChoosableFileFilter(new FileFilterExtensions(new String[] {extension }));
int ret = this.m_filechooser.showSaveDialog(this.m_chart);
if (ret == JFileChooser.APPROVE_OPTION) {
File file = new File(this.m_filechooser.getSelectedFile().getAbsolutePath() + "."
+ extension);
// get the encoding
try {
FileOutputStream outStream = new FileOutputStream(file);
EPSDocumentGraphics2D g2d = new EPSDocumentGraphics2D(true);
g2d.setGraphicContext(new org.apache.xmlgraphics.java2d.GraphicContext());
g2d.setupDocument(outStream, this.m_chart.getWidth(),this.m_chart.getHeight());
// org.sourceforge.jlibeps.epsgraphics.EpsGraphics2D g = new org.sourceforge.jlibeps.epsgraphics.EpsGraphics2D(
// "Title", outStream, 0, 0, this.m_chart.getWidth(), this.m_chart.getHeight());
//g.scale(0.24, 0.24);
this.m_chart.paint(g2d);
// g.flush();
// g.close();
outStream.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
/**
* @see java.beans.PropertyChangeListener#propertyChange(java.beans.PropertyChangeEvent)
*/
public void propertyChange(final PropertyChangeEvent evt) {
// nop
}
}
/** Generated serialVersionUID. */
private static final long serialVersionUID = -7446202109342192546L;
/** Flag set whenever the proper jar file (apache-xmlgraphics-commons) is in the classpath. */
public static final boolean EPS_SUPPORTED;
/**
* Map for instances.
*/
private static Map instances = new HashMap();
static {
Class< ? > test = null;
try {
// Do a fake operation that will not be inlined by the compiler:
test = Class.forName("org.apache.xmlgraphics.java2d.ps.EPSDocumentGraphics2D");
} catch (Throwable ncde) {
// nop
} finally {
if (test != null) {
EPS_SUPPORTED = true;
} else {
EPS_SUPPORTED = false;
}
}
}
/**
* Returns the single instance for the given component, potentially creating
* it.
*
* If an instance for the given component had been created the description
* String is ignored.
*
*
* @param chart
* the target the action will work on
* @param actionName
* the descriptive String that will be displayed by
* {@link javax.swing.AbstractButton} subclasses that get this
* Action assigned (
* {@link javax.swing.AbstractButton#setAction(javax.swing.Action)}).
* @return the single instance for the given component.
*/
public static Action getInstance(final Chart2D chart, final String actionName) {
Action result = Chart2DActionSaveEpsSingletonApacheFop.instances.get(Chart2DActionSaveEpsSingletonApacheFop
.key(chart));
if (result == null) {
if (Chart2DActionSaveEpsSingletonApacheFop.EPS_SUPPORTED) {
result = new Chart2DActionSaveEps(chart, actionName);
} else {
result = new ActionDisabledDummy(actionName);
}
Chart2DActionSaveEpsSingletonApacheFop.instances.put(Chart2DActionSaveEpsSingletonApacheFop.key(chart), result);
}
return result;
}
/**
* Creates a key for the component for internal storage.
*
*
* @param chart
* the chart to generate the storage key for.
* @return a storage key unique for the given chart instance.
*/
private static String key(final Chart2D chart) {
return chart.getClass().getName() + chart.hashCode();
}
/**
* Singleton constructor.
*
*/
private Chart2DActionSaveEpsSingletonApacheFop() {
// nop
}
}
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