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OptaPlanner solves planning problems. This lightweight, embeddable planning engine implements powerful and scalable algorithms to optimize business resource scheduling and planning. This module contains the examples which demonstrate how to use it in a normal Java application.

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package org.optaplanner.examples.conferencescheduling.swingui;

import java.awt.BorderLayout;
import java.awt.Desktop;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.io.File;
import java.io.IOException;

import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;

import org.optaplanner.examples.common.swingui.SolutionPanel;
import org.optaplanner.examples.conferencescheduling.domain.ConferenceSolution;
import org.optaplanner.examples.conferencescheduling.persistence.ConferenceSchedulingXlsxFileIO;
import org.optaplanner.persistence.common.api.domain.solution.SolutionFileIO;

public class ConferenceSchedulingPanel extends SolutionPanel {

    public static final String LOGO_PATH =
            "/org/optaplanner/examples/conferencescheduling/swingui/conferenceSchedulingLogo.png";

    public ConferenceSchedulingPanel() {
        JButton publishButton = new JButton("Publish");
        publishButton.addActionListener(actionEvent -> {
            solutionBusiness.getSolution().getTalkList().forEach(talk -> {
                talk.setPublishedTimeslot(talk.getTimeslot());
                talk.setPublishedRoom(talk.getRoom());
            });
        });

        JButton showInLibreOfficeOrExcelButton = new JButton("Show in LibreOffice or Excel");
        showInLibreOfficeOrExcelButton.addActionListener(event -> {
            SolutionFileIO solutionFileIO = new ConferenceSchedulingXlsxFileIO();
            File tempFile;
            try {
                tempFile = File.createTempFile(solutionBusiness.getSolutionFileName(),
                        "." + solutionFileIO.getOutputFileExtension());
            } catch (IOException e) {
                throw new IllegalStateException("Failed to create temp file.", e);
            }
            solutionFileIO.write(solutionBusiness.getSolution(), tempFile);
            try {
                Desktop.getDesktop().open(tempFile);
            } catch (IOException e) {
                throw new IllegalStateException("Failed to show temp file (" + tempFile + ") in LibreOffice or Excel.", e);
            }
        });

        JPanel showPanel = new JPanel();
        JPanel importPanel = new JPanel();
        showPanel.setLayout(new FlowLayout(FlowLayout.LEFT));
        importPanel.setLayout(new FlowLayout(FlowLayout.LEFT));

        showPanel.add(showInLibreOfficeOrExcelButton);
        showPanel.add(new JLabel("Changes to that file are ignored unless you explicitly save it there and open it here."));
        importPanel.add(publishButton);

        JPanel buttonsPanel = new JPanel();
        buttonsPanel.setLayout(new GridLayout(2, 1));
        buttonsPanel.add(showPanel);
        buttonsPanel.add(importPanel);

        setLayout(new BorderLayout());
        add(buttonsPanel, BorderLayout.NORTH);
    }

    @Override
    public void resetPanel(ConferenceSolution solution) {
    }

}