CoursePreferencePanel.java

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 * and open the template in the editor.
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package org.dlect.ui.prefs;

import com.google.common.collect.ImmutableSortedSet;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
import java.awt.GridBagConstraints;
import java.util.Set;
import java.util.TreeMap;
import org.dlect.controller.MainController;
import org.dlect.events.Event;
import org.dlect.events.EventListener;
import org.dlect.events.wrapper.Wrappers;
import org.dlect.model.Database;
import org.dlect.model.Database.DatabaseEventID;
import org.dlect.model.Semester;
import org.dlect.model.Semester.SemesterEventID;

/**
 *
 * @author lee
 */
public class CoursePreferencePanel extends PreferencePanel implements EventListener {

    private static final long serialVersionUID = 1L;

    private final TreeMap<Semester, SemesterRowGroupHandler> semesterCtls = Maps.newTreeMap();

    public CoursePreferencePanel(MainController ctl) {
        super(ctl);
        initComponents();
        Wrappers.addSwingListenerTo(this, ctl, Database.class, Semester.class);
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {
        java.awt.GridBagConstraints gridBagConstraints;

        shownLabel = new javax.swing.JLabel();
        paddingPanel = new javax.swing.JPanel();
        endPaddingPanel = new javax.swing.JPanel();

        setLayout(new java.awt.GridBagLayout());

        shownLabel.setText("Shown");
        shownLabel.setBorder(javax.swing.BorderFactory.createCompoundBorder(javax.swing.BorderFactory.createMatteBorder(0, 1, 1, 0, new java.awt.Color(0, 0, 0)), javax.swing.BorderFactory.createEmptyBorder(2, 2, 2, 2)));
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 1;
        gridBagConstraints.gridy = 0;
        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
        add(shownLabel, gridBagConstraints);

        paddingPanel.setBorder(javax.swing.BorderFactory.createMatteBorder(0, 0, 1, 0, new java.awt.Color(0, 0, 0)));
        paddingPanel.setLayout(new java.awt.GridLayout(1, 0));
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 0;
        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.weighty = 1.0;
        add(paddingPanel, gridBagConstraints);

        endPaddingPanel.setBorder(javax.swing.BorderFactory.createMatteBorder(0, 1, 1, 0, new java.awt.Color(0, 0, 0)));
        endPaddingPanel.setPreferredSize(new java.awt.Dimension(0, 0));
        endPaddingPanel.setLayout(new java.awt.GridLayout(1, 0));
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 2;
        gridBagConstraints.gridy = 0;
        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
        add(endPaddingPanel, gridBagConstraints);
    }// </editor-fold>//GEN-END:initComponents
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JPanel endPaddingPanel;
    private javax.swing.JPanel paddingPanel;
    private javax.swing.JLabel shownLabel;
    // End of variables declaration//GEN-END:variables

    public void doRefresh() {
        MainController mc = getController();
        ImmutableSortedSet<Semester> semesters = mc.getDatabaseHandler().getDatabase().getSemesters();

        Set<Semester> toRemove = Sets.newHashSet(semesterCtls.keySet());
        toRemove.removeAll(semesters);
        for (Semester s : toRemove) {
            semesterCtls.remove(s).removeFromLayout(this);
        }

        int row = 1;
        for (Semester s : semesters) {
            SemesterRowGroupHandler get = semesterCtls.get(s);
            if (get == null) {
                get = new SemesterRowGroupHandler(s, mc);
                semesterCtls.put(s, get);
                get.createItems();
            }
            GridBagConstraints gbc = new GridBagConstraints();
            gbc.gridy = row;
            int change = get.doLayout(this, gbc);

            row += change;
        }
    }

    @Override
    public void doSave() {
    }

    @Override
    public void doPreShow() {
        doRefresh();
    }

    @Override
    public String getTabName() {
        return "Courses";
    }

    @Override
    public String getTabTooltip() {
        return "Choose which courses you would like displayed on the main screen";
    }

    @Override
    public boolean isModified() {
        return false;
    }

    @Override
    public void processEvent(Event e) {
        if (e.getEventID().equals(DatabaseEventID.SEMESTER) || e.getEventID().equals(SemesterEventID.SUBJECT)) {
            doRefresh();
        }
    }

}