/*
* Open Source Physics software is free software as described near the bottom of this code file.
*
* For additional information and documentation on Open Source Physics please see:
* <http://www.opensourcephysics.org/>
*/
package org.opensourcephysics.controls;
import java.awt.Component;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.DecimalFormat;
import java.util.Enumeration;
import java.util.Properties;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import org.opensourcephysics.display.OSPRuntime;
import org.opensourcephysics.display.TextFrame;
import org.opensourcephysics.tools.FontSizer;
public class ControlUtils {
static DecimalFormat format2 = new DecimalFormat("#0.00"); //$NON-NLS-1$
static DecimalFormat format3 = new DecimalFormat("#0.000"); //$NON-NLS-1$
static DecimalFormat format4 = new DecimalFormat("#0.0000"); //$NON-NLS-1$
static DecimalFormat format_E2 = new DecimalFormat("0.00E0"); //$NON-NLS-1$
static DecimalFormat format_E3 = new DecimalFormat("0.000E0"); //$NON-NLS-1$
static DecimalFormat format_E4 = new DecimalFormat("0.0000E0"); //$NON-NLS-1$
/**
* Convert a double to a string, printing two decimal places.
* @param d Input double
*/
static public String f2(double d) {
return format2.format(d);
}
/**
* Convert a double to a string, printing three decimal places.
* @param d Input double
*/
static public String f3(double d) {
return format3.format(d);
}
/**
* Convert a double to a string, printing two decimal places including exponent.
* @param d Input double
*/
static public String e2(double d) {
return format_E2.format(d);
}
/**
* Convert a double to a string, printing three decimal places including exponent.
* @param d Input double
*/
static public String e3(double d) {
return format_E3.format(d);
}
/**
* Convert a double to a string, printing four decimal places including exponent.
* @param d Input double
*/
static public String e4(double d) {
return format_E4.format(d);
}
/**
* Convert a double to a string, printing four decimal places.
* @param d Input double
*/
static public String f4(double d) {
return format4.format(d);
}
protected static JFileChooser chooser;
private ControlUtils() {} // prohibits instantiation
private static TextFrame sysPropFrame;
/**
* Shows the about dialog.
*/
public static JFrame showSystemProperties(boolean vis) {
if(sysPropFrame==null) {
sysPropFrame = new TextFrame(null, null);
sysPropFrame.getTextPane().setText(getSystemProperties());
sysPropFrame.setSize(300, 400);
}
sysPropFrame.setVisible(vis);
return sysPropFrame;
}
public static String getSystemProperties() {
StringBuffer buffer = new StringBuffer();
try {
Properties sysProps = System.getProperties();
int i = 0;
Enumeration<?> names = sysProps.propertyNames();
while(names.hasMoreElements()) {
String key = (String) names.nextElement();
i++;
buffer.append(i+". "+key+" = "+sysProps.getProperty(key)+"\n"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
}
} catch(Exception e) {
// Security Exception thrown by browser
String[] key = {"java.version", "java.vendor", "java.class.version", "os.name", "os.arch", "os.version", //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$ //$NON-NLS-6$
"file.separator", "path.separator", "line.separator", }; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
for(int i = 0; i<key.length; i++) {
buffer.append(i+". "+key[i]+" = "+System.getProperty(key[i])+"\n"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
}
}
return buffer.toString();
}
/**
* Loads control parameters from a text file using a dialog box.
*/
public static void loadParameters(Control control, Component parent) {
JFileChooser chooser = new JFileChooser(new File(OSPRuntime.chooserDir));
FontSizer.setFonts(chooser, FontSizer.getLevel());
int result = chooser.showOpenDialog(parent);
if(result==JFileChooser.APPROVE_OPTION) {
try {
BufferedReader inFile = new BufferedReader(new FileReader(chooser.getSelectedFile()));
readFile(control, inFile);
inFile.close();
} catch(Exception ex) {
System.err.println(ex.getMessage());
}
}
}
/**
* Pops up a "Save File" file chooser dialog and takes user through process of saving and object to a file.
*
* @param object the object that will be converted to a string and saved
* @param parent the parent component of the dialog, can be <code>null</code>;
* see <code>showDialog</code> in class JFileChooser for details
*/
public static void saveToFile(Object object, Component parent) {
JFileChooser fileChooser = new JFileChooser(new File(OSPRuntime.chooserDir));
FontSizer.setFonts(chooser, FontSizer.getLevel());
int result = fileChooser.showSaveDialog(parent);
if(result!=JFileChooser.APPROVE_OPTION) {
return;
}
File file = fileChooser.getSelectedFile();
if(file.exists()) {
int selected = JOptionPane.showConfirmDialog(parent, ControlsRes.getString("OSPLog.ReplaceExisting_dialog_message")+" "+file.getName()+ControlsRes.getString("OSPLog.question_mark"), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
ControlsRes.getString("OSPLog.ReplaceFile_dialog_title"), //$NON-NLS-1$
JOptionPane.YES_NO_CANCEL_OPTION);
if(selected!=JOptionPane.YES_OPTION) {
return;
}
}
try {
FileWriter fw = new FileWriter(file);
PrintWriter pw = new PrintWriter(fw);
pw.print(object.toString());
pw.close();
} catch(IOException e) {
JOptionPane.showMessageDialog(parent, ControlsRes.getString("Dialog.SaveError.Message"), //$NON-NLS-1$
ControlsRes.getString("Dialog.SaveError.Title"), //$NON-NLS-1$
JOptionPane.ERROR_MESSAGE);
}
}
public static void saveXML(Object obj) {
int result = getXMLFileChooser().showSaveDialog(null);
if(result==JFileChooser.APPROVE_OPTION) {
File file = chooser.getSelectedFile();
// check to see if file already exists
if(file.exists()) {
int selected = JOptionPane.showConfirmDialog(null, ControlsRes.getString("OSPLog.ReplaceExisting_dialog_message")+" "+file.getName()+ControlsRes.getString("OSPLog.question_mark"), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
ControlsRes.getString("OSPLog.ReplaceFile_dialog_title"), //$NON-NLS-1$
JOptionPane.YES_NO_CANCEL_OPTION);
if(selected!=JOptionPane.YES_OPTION) {
return;
}
}
String fileName = XML.getRelativePath(file.getAbsolutePath());
if((fileName==null)||fileName.trim().equals("")) { //$NON-NLS-1$
return;
}
int i = fileName.toLowerCase().lastIndexOf(".xml"); //$NON-NLS-1$
if(i!=fileName.length()-4) {
fileName += ".xml"; //$NON-NLS-1$
}
XMLControl xml = new XMLControlElement(obj);
xml.write(fileName);
}
}
/**
* Gets a file chooser.
*
* @return the chooser
*/
public static JFileChooser getXMLFileChooser() {
if(chooser!=null) {
FontSizer.setFonts(chooser, FontSizer.getLevel());
return chooser;
}
chooser = new JFileChooser(new File(OSPRuntime.chooserDir));
javax.swing.filechooser.FileFilter filter = new javax.swing.filechooser.FileFilter() {
// accept all directories and *.xml or *.osp files.
public boolean accept(File f) {
if(f==null) {
return false;
}
if(f.isDirectory()) {
return true;
}
String extension = null;
String name = f.getName();
int i = name.lastIndexOf('.');
if((i>0)&&(i<name.length()-1)) {
extension = name.substring(i+1).toLowerCase();
}
if((extension!=null)&&(extension.equals("xml")||extension.equals("osp"))) { //$NON-NLS-1$ //$NON-NLS-2$
return true;
}
return false;
}
// the description of this filter
public String getDescription() {
return "XML files"; //$NON-NLS-1$
}
};
chooser.addChoosableFileFilter(filter);
FontSizer.setFonts(chooser, FontSizer.getLevel());
return chooser;
}
private static void readFile(Control control, BufferedReader inFile) throws IOException {
String nextLine = inFile.readLine();
while(nextLine!=null) {
String par = parseParameter(nextLine);
if((par!=null)&&!par.equals("")) { //$NON-NLS-1$
control.setValue(par, parseValue(nextLine));
}
nextLine = inFile.readLine();
}
}
private static String parseParameter(String aLine) {
int index = aLine.indexOf('='); // find index of =
if(index<1) {
return null;
}
return aLine.substring(0, index).trim(); // get the value after the =
}
private static String parseValue(String aLine) {
int index = aLine.indexOf('='); // find index of =
if(index>=aLine.length()-1) {
return ""; //$NON-NLS-1$
}
return aLine.substring(index+1).trim(); // get the value after the =
}
}
/*
* Open Source Physics software is free software; you can redistribute
* it and/or modify it under the terms of the GNU General Public License (GPL) as
* published by the Free Software Foundation; either version 2 of the License,
* or(at your option) any later version.
*
* Code that uses any portion of the code in the org.opensourcephysics package
* or any subpackage (subdirectory) of this package must must also be be released
* under the GNU GPL license.
*
* This software 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; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston MA 02111-1307 USA
* or view the license online at http://www.gnu.org/copyleft/gpl.html
*
* Copyright (c) 2007 The Open Source Physics project
* http://www.opensourcephysics.org
*/