ConstantsEditor.java - This Java code creates a graphical u…

/plugins/Calculator/tags/1.2.0/src/ise/calculator/ConstantsEditor.java

# · Java · 141 lines · 118 code · 17 blank · 6 comment · 15 complexity · 4eb1c3bc0fe9659466854787dddd6255 MD5 · raw file


/*
This file, unless otherwise noted, is wholly the work of Dale Anson,
danson@grafidog.com. The complete contents of this file is hereby 
released into the public domain, with no rights reserved. For questions, 
concerns, or comments, please email the author.
*/

package ise.calculator;

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
import javax.swing.event.*;


public class ConstantsEditor extends JDialog {

   private String LS = System.getProperty( "line.separator" );

   public ConstantsEditor( JDialog parent, File file ) {
      this( parent, "Edit Constant", file );
   }

   public ConstantsEditor( final JDialog parent, String constant_title, final File constant_file ) {
      super( parent, constant_title, true );
      JPanel contents = new JPanel( new LambdaLayout() );

      try {
         String name = "";
         String value = "";
         String uncertainty = "";
         String units = "";
         if ( constant_file.exists() && constant_file.length() > 0) {
            FunctionReader fr = new FunctionReader(constant_file);
            String desc = fr.getDescription();
            String[] split = desc.split( "<br>" );
            name = split[ 0 ].substring( split[ 0 ].indexOf( " " ) ).trim();
            value = split[ 1 ].substring( split[ 1 ].indexOf( " " ) ).trim();
            uncertainty = split[ 2 ].substring( split[ 2 ].indexOf( " " ) ).trim();
            units = split[ 3 ].substring( split[ 3 ].indexOf( " " ) ).trim();
         }

         final JTextField name_field = new JTextField( name );
         final JButton name_view = new JButton( "View" );
         final JTextField value_field = new JTextField( );
         value_field.setDocument( new RegisterDocument() );
         value_field.setText( value );
         final JTextField uncertainty_field = new JTextField( uncertainty );
         final JButton uncertainty_view = new JButton( "View" );
         final JTextField units_field = new JTextField( units );
         final JButton units_view = new JButton( "View" );

         ActionListener view_listener = new ActionListener() {
                  public void actionPerformed( ActionEvent ae ) {
                     JButton btn = ( JButton ) ae.getSource();
                     String text = "";
                     if ( btn.equals( name_view ) ) {
                        text = name_field.getText();
                     }
                     else if ( btn.equals( uncertainty_view ) ) {
                        text = uncertainty_field.getText();
                     }
                     else if ( btn.equals( units_view ) ) {
                        text = units_field.getText();
                     }
                     JOptionPane.showMessageDialog( ConstantsEditor.this, "<html>" + text, "View", JOptionPane.PLAIN_MESSAGE );
                  }
               };

         name_view.addActionListener( view_listener );
         uncertainty_view.addActionListener( view_listener );
         units_view.addActionListener( view_listener );

         KappaLayout btn_layout = new KappaLayout();
         JPanel btn_panel = new JPanel( btn_layout );
         JButton save_btn = new JButton( "Save" );
         JButton cancel_btn = new JButton( "Cancel" );
         btn_panel.add( save_btn, "0, 0, 1, 1, E, w,3" );
         btn_panel.add( cancel_btn, "1, 0, 1, 1, W, w,3" );
         btn_layout.makeColumnsSameWidth( 0, 1 );

         contents.add( new JLabel( "Name:" ), "0, 0, 1, 1, 0, w, 3" );
         contents.add( name_field, "1, 0, 5, 1, 0, w, 3" );
         contents.add( name_view, "6, 0, 1, 1, 0, w, 3" );
         contents.add( new JLabel( "Value:" ), "0, 1, 1, 1, 0, w, 3" );
         contents.add( value_field, "1, 1, 6, 1, 0, w, 3" );
         contents.add( new JLabel( "Uncertainty:" ), "0, 2, 1, 1, 0, w, 3" );
         contents.add( uncertainty_field, "1, 2, 5, 1, 0, wh, 3" );
         contents.add( uncertainty_view, "6, 2, 1, 1, 0, w, 3" );
         contents.add( new JLabel( "Units:" ), "0, 3, 1, 1, 0, w, 3" );
         contents.add( units_field, "1, 3, 5, 1, 0, wh, 3" );
         contents.add( units_view, "6, 3, 1, 1, 0, w, 3" );
         contents.add( btn_panel, "0, 4, 7, 1, 0, , 6" );

         save_btn.addActionListener( new ActionListener() {
                  public void actionPerformed( ActionEvent ae ) {
                     try {
                        String name = name_field.getText();
                        if (name == null || name.trim().length() == 0)
                           throw new Exception("Constant name must be entered.");
                        String value = value_field.getText();
                        if (value == null || value.trim().length() == 0)
                           throw new Exception("Value must be entered.");
                        String desc = "<html>Constant: " + name + "<br>Value: " + value + "<br>Uncertainty: " + uncertainty_field.getText().trim() + "<br>Units: " + units_field.getText().trim();
                        FunctionWriter fw = new FunctionWriter(constant_file );
                        fw.setConstant(true);
                        fw.write(name, desc, value);
                     }
                     catch ( Exception e ) {
                        JOptionPane.showMessageDialog( parent, "Unable to save: " + e.getMessage(), "Error", JOptionPane.ERROR_MESSAGE );
                     }
                     setVisible(false);;
                     dispose();
                  }
               }
                                   );
         cancel_btn.addActionListener( new ActionListener() {
                  public void actionPerformed( ActionEvent ae ) {
                     setVisible(false);
                     dispose();
                  }
               }
                                     );
         setContentPane( contents );
         pack();
         GUIUtils.center( parent, this );
         setVisible( true );
      }
      catch ( Exception e ) {
         JOptionPane.showMessageDialog( parent, "Error: " + e.getMessage(), "Error", JOptionPane.ERROR_MESSAGE );
         e.printStackTrace();
      }


   }

   public static void main ( String[] args ) {
      new ConstantsEditor( new JDialog(), "test", new File( "c:/Documents and Settings/danson/.calc/const7543.calc" ) );
   }
}

Summary ✨

This Java code creates a graphical user interface (GUI) for editing constants, specifically constant files used by a calculator application. It allows users to view and edit constant names, values, uncertainties, and units, with options to save changes and cancel. The GUI is designed to be visually appealing and easy to use, with features like auto-completion and validation of user input.

Tech Fingerprint

Standard IO/NIO

Alerts (10)

'import' Maintainability Info: Wildcard imports (e.g., `import java.util.*;`) can obscure the origin of classes and lead to namespace collisions. Prefer importing specific classes explicitly.
10 11 12 13 14
'=' Maintainability Info: Avoid using unnamed 'magic' numbers directly in comparisons or assignments. Use named constants (static final variables) instead to improve readability and maintainability.
40 41
Complexity hotspot; line 100 (total complexity: 4)
100
Complexity hotspot; line 103 (total complexity: 4)
103
'.printStackTrace()' Avoid printing stack traces directly to std err/out. Use a proper logging framework to handle exceptions consistently and direct output appropriately.
132