objselectionpanel.java

来自「简介： 今天为网友提供的是JAVA源码」· Java 代码 · 共 74 行

package com.power.pipeengine.EngineUI;

/**
 * <p>Title: PIPE Engine</p>
 * <p>Description: Global Planning Optimization Engine</p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: Paraster, Inc.</p>
 * @author Wei Tan
 * @version 1.0
 */

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

import com.power.pipeengine.*;
import java.util.ResourceBundle;

/**
 * ObjectiveValue is a one line JPanel that displays current iteration number
 * and objective value from the LP engine. It has a label and a field for the
 * iteration and objective value.
 * It is a singular class.
 */
public class ObjSelectionPanel extends JPanel {
  static ResourceBundle res = ResourceBundle.getBundle("com.power.pipeengine.Res",
                                                          EngineConfig.getInstance().getLocale() );
  private JLabel _selectionLabel = new JLabel( res.getString("Choose_an_objective") );

  private String[] _objFunctions = { res.getString("MAXIMIZE_ON_TIME"), res.getString("_disabled_MAXIMIZE") };
  private JComboBox _selectionComboBox = new JComboBox( _objFunctions );

  private static final ObjSelectionPanel INSTANCE =
                              new ObjSelectionPanel();

  /**
   * class constructor
   */
  private ObjSelectionPanel() {
    init();
  }

  /**
   * Gets the global instance of the singular class object.
   * @return the global instance.
   */
  public static ObjSelectionPanel getInstance( ) {
        return INSTANCE;
  }

  //initialize the class
  private void init() {
    _selectionComboBox.setSelectedIndex( 0 ); //show "MAXIMIZE ON-TIME DELIVERY"
    _selectionComboBox.setEditable( false );
    _selectionComboBox.setEnabled( true );
    _selectionComboBox.setToolTipText( res.getString("Choose_an_objective1") );
    _selectionComboBox.addActionListener(  new ActionListener() {
			public void actionPerformed( ActionEvent e ) {
                _selectionComboBox.setSelectedIndex( 0 );
                String selection = (String) _selectionComboBox.getSelectedItem();
				EngineConfig.getInstance().setObjType( selection );
			}
    });


    this.setLayout( new FlowLayout() );
    //this.add( _selectionLabel );
    this.setToolTipText( res.getString("Choose_an_objective1") );
    this.setBorder( BorderFactory.createTitledBorder( res.getString("Objective_to_optimize") ));
    this.add( _selectionComboBox );
  }

}