iterationselector.java

一个用于排队系统仿真的开源软件,有非常形象的图象仿真过程!

/**
 * Copyright (C) 2006, Laboratorio di Valutazione delle Prestazioni - Politecnico di Milano

 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.

 * This program 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 program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
package jmt.gui.exact.panels;

import jmt.gui.exact.ExactModel;
import jmt.gui.wizard.WizardPanel;

import javax.swing.*;
import javax.swing.border.EtchedBorder;
import javax.swing.event.ChangeListener;
import javax.swing.event.ChangeEvent;
import java.util.Vector;
import java.util.Iterator;
import java.awt.*;
import java.text.DecimalFormat;

/**
 * <p>Title: Iteration Selector Panel</p>
 * <p>Description: This panel is used to select iteration value
 * for what-if analysis. This is designed to hold other ResultsPanel</p>
 *
 * @author Bertoli Marco
 *         Date: 6-giu-2006
 *         Time: 15.52.27
 */
public class IterationSelector extends WizardPanel {
    // Vector with all solution panels
    private Vector panels = new Vector();
    // Data structure
    private ExactModel model;
    // Dimension of spinner
    final static Dimension DIM_SPINNER = new Dimension(60,20);

    private JTabbedPane tabber = new JTabbedPane();
    private JLabel description = new JLabel();

    // Formats numbers
    private DecimalFormat doubleFormatter = new DecimalFormat("#0.0####");
    private DecimalFormat intFormatter = new DecimalFormat("#0");

    /**
     * Creates a bew Iteration Selector panel, given target ExactModel
     * @param em reference to data structure
     */
    public IterationSelector(ExactModel em) {
        model = em;
        initComponents();
    }

    /**
     * Adds a solutionPanel to be notified when selected iteration changes.
     * This component is placed in the north of given panel.
     * @param s solutionPanel to be added
     */
    public void addSolutionPanel(SolutionPanel s) {
        panels.add(s);
        tabber.add(s);
    }

    /**
     * Selects iteration i in all given panels
     * @param i iteration to be selected
     */
    private void select(int i) {
        Iterator it = panels.iterator();
        while (it.hasNext())
            ((SolutionPanel)it.next()).setIteration(i);
        double value = model.getWhatIfValues()[i];
        // Now adjusts description label
        if (model.getWhatIfType().equals(ExactModel.WHAT_IF_ARRIVAL)) {
            if (model.getWhatIfClass() < 0)
                description.setText("Arrival rates \u03bbi of each open class ("
                        + doubleFormatter.format(value * 100) + "% of initial value)");
            else
                description.setText("Arrival rate for class "+ model.getClassNames()[model.getWhatIfClass()]
                        + " \u03bbi = "+ doubleFormatter.format(value) + " [job/s]");
        }
        else if (model.getWhatIfType().equals(ExactModel.WHAT_IF_CUSTOMERS)) {
            if (model.getWhatIfClass() < 0)
                description.setText("Number of customers Ni of each closed class ("+
                        doubleFormatter.format(value * 100) + "% of initial value)");
            else
                description.setText("Number of customers for "+ model.getClassNames()[model.getWhatIfClass()]+
                        " Ni = "+intFormatter.format(value));
        }
        else if (model.getWhatIfType().equals(ExactModel.WHAT_IF_DEMANDS)) {
            if (model.getWhatIfClass() < 0)
                description.setText("Service demands Di for all classes ("+
                        doubleFormatter.format(value * 100) + "% of initial value) at "
                        +model.getStationNames()[model.getWhatIfStation()]);
            else
                description.setText("Service demand for "+
                        model.getClassNames()[model.getWhatIfClass()]+
                        " at "+ model.getStationNames()[model.getWhatIfStation()]+
                        " Di = "+doubleFormatter.format(value)+" [s]");
        }
        else if (model.getWhatIfType().equals(ExactModel.WHAT_IF_MIX)) {
            description.setText("Population mix \u03b2i = " + doubleFormatter.format(value) +
                    " for "+model.getClassNames()[model.getWhatIfClass()]);
        }
    }

    /**
     * Initialize all gui objects
     */
    private void initComponents() {
        setLayout(new BorderLayout());
        JPanel topPanel = new JPanel(new GridLayout(2,1));
        topPanel.setBorder(BorderFactory.createEtchedBorder(EtchedBorder.RAISED));
        JLabel label = new JLabel("Execution number: ");
        final JSpinner spinner = new JSpinner();
        spinner.setPreferredSize(DIM_SPINNER);
        spinner.setValue(new Integer(1));
        label.setLabelFor(spinner);
        // Pack spinner and its label on top, while description is on the second line
        JPanel tmp = new JPanel();
        tmp.add(label);
        tmp.add(spinner);
        topPanel.add(tmp);
        description.setHorizontalAlignment(JLabel.CENTER);
        topPanel.add(description);
        // Adds state change to spinner.
        spinner.addChangeListener(new ChangeListener() {
            public void stateChanged(ChangeEvent e) {
                int i = ((Integer)spinner.getValue()).intValue();
                if (i <= 0)
                    i = 1;
                if (i > model.getWhatIfValues().length)
                    i = model.getWhatIfValues().length;
                select(i - 1);
                spinner.setValue(new Integer(i));
            }
        });

        add(topPanel, BorderLayout.NORTH);
        add(tabber, BorderLayout.CENTER);
        select(0);
    }


    /**
     * @return the panel's name
     */
    public String getName() {
        return "Textual Results";
    }
}