/**
   * DOCUMENT ME!
   *
   * @param evt DOCUMENT ME!
   */
  private void btnThisMonthActionPerformed(final java.awt.event.ActionEvent evt) {
    final Calendar calendar = Calendar.getInstance();

    final Date toDate = calendar.getTime();

    calendar.set(Calendar.DAY_OF_MONTH, 1);
    final Date fromDate = calendar.getTime();

    try {
      lockDateButtons = true;
      dpiFrom.setDate(fromDate);
      dpiTo.setDate(toDate);
    } finally {
      lockDateButtons = false;
    }

    periodChanged();
    refreshFortfuehrungsList();
  }
  /**
   * 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">
  private void initComponents() {
    java.awt.GridBagConstraints gridBagConstraints;

    buttonGroup1 = new javax.swing.ButtonGroup();
    jPanel1 = new javax.swing.JPanel();
    panPeriod = new javax.swing.JPanel();
    jLabel1 = new javax.swing.JLabel();
    jLabel2 = new javax.swing.JLabel();
    dpiFrom = new org.jdesktop.swingx.JXDatePicker();
    dpiTo = new org.jdesktop.swingx.JXDatePicker();
    jPanel2 = new javax.swing.JPanel();
    btnThisWeek = new javax.swing.JToggleButton();
    btnLastWeek = new javax.swing.JToggleButton();
    btnThisMonth = new javax.swing.JToggleButton();
    btnLastMonth = new javax.swing.JToggleButton();
    jPanel7 = new javax.swing.JPanel();
    btnRefreshAnlaesse = new javax.swing.JButton();
    panMasterDetail = new javax.swing.JPanel();
    panMaster = new javax.swing.JPanel();
    jScrollPane1 = new javax.swing.JScrollPane();
    jXTable1 = new org.jdesktop.swingx.JXTable();
    panDetail = new javax.swing.JPanel();
    jPanel3 = new javax.swing.JPanel();
    lblDokumentLink = new javax.swing.JLabel();
    jPanel5 = new javax.swing.JPanel();
    jPanel4 = new javax.swing.JPanel();
    jScrollPane2 = new javax.swing.JScrollPane();
    lstKassenzeichen = new javax.swing.JList();
    jButton1 = new javax.swing.JButton();
    cbxAbgearbeitet = new javax.swing.JCheckBox();
    jPanel6 = new javax.swing.JPanel();
    jPanel8 = new javax.swing.JPanel();
    btnCloseDialog = new javax.swing.JButton();
    jProgressBar1 = new javax.swing.JProgressBar();
    jPanel9 = new javax.swing.JPanel();

    setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
    setTitle(
        org.openide.util.NbBundle.getMessage(
            FortfuehrungsanlaesseDialog.class, "FortfuehrungsanlaesseDialog.title")); // NOI18N
    getContentPane().setLayout(new java.awt.GridBagLayout());

    jPanel1.setPreferredSize(new java.awt.Dimension(800, 643));
    jPanel1.setLayout(new java.awt.GridBagLayout());

    panPeriod.setBorder(
        javax.swing.BorderFactory.createTitledBorder(
            org.openide.util.NbBundle.getMessage(
                FortfuehrungsanlaesseDialog.class,
                "FortfuehrungsanlaesseDialog.panPeriod.border.title"))); // NOI18N
    panPeriod.setLayout(new java.awt.GridBagLayout());

    jLabel1.setText(
        org.openide.util.NbBundle.getMessage(
            FortfuehrungsanlaesseDialog.class,
            "FortfuehrungsanlaesseDialog.jLabel1.text")); // NOI18N
    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 2;
    gridBagConstraints.gridy = 0;
    gridBagConstraints.fill = java.awt.GridBagConstraints.VERTICAL;
    gridBagConstraints.anchor = java.awt.GridBagConstraints.LINE_END;
    gridBagConstraints.weighty = 1.0;
    gridBagConstraints.insets = new java.awt.Insets(10, 10, 5, 5);
    panPeriod.add(jLabel1, gridBagConstraints);

    jLabel2.setText(
        org.openide.util.NbBundle.getMessage(
            FortfuehrungsanlaesseDialog.class,
            "FortfuehrungsanlaesseDialog.jLabel2.text")); // NOI18N
    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 4;
    gridBagConstraints.gridy = 0;
    gridBagConstraints.fill = java.awt.GridBagConstraints.VERTICAL;
    gridBagConstraints.anchor = java.awt.GridBagConstraints.LINE_END;
    gridBagConstraints.insets = new java.awt.Insets(10, 10, 5, 5);
    panPeriod.add(jLabel2, gridBagConstraints);

    dpiFrom.addPropertyChangeListener(
        new java.beans.PropertyChangeListener() {

          @Override
          public void propertyChange(final java.beans.PropertyChangeEvent evt) {
            dpiFromPropertyChange(evt);
          }
        });
    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 3;
    gridBagConstraints.gridy = 0;
    gridBagConstraints.anchor = java.awt.GridBagConstraints.LINE_START;
    gridBagConstraints.insets = new java.awt.Insets(10, 0, 5, 10);
    panPeriod.add(dpiFrom, gridBagConstraints);

    dpiTo.addPropertyChangeListener(
        new java.beans.PropertyChangeListener() {

          @Override
          public void propertyChange(final java.beans.PropertyChangeEvent evt) {
            dpiToPropertyChange(evt);
          }
        });
    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 5;
    gridBagConstraints.gridy = 0;
    gridBagConstraints.anchor = java.awt.GridBagConstraints.LINE_START;
    gridBagConstraints.insets = new java.awt.Insets(10, 0, 5, 10);
    panPeriod.add(dpiTo, gridBagConstraints);

    jPanel2.setLayout(new java.awt.GridLayout(2, 3, 5, 5));

    buttonGroup1.add(btnThisWeek);
    btnThisWeek.setText(
        org.openide.util.NbBundle.getMessage(
            FortfuehrungsanlaesseDialog.class,
            "FortfuehrungsanlaesseDialog.btnThisWeek.text")); // NOI18N
    btnThisWeek.addActionListener(
        new java.awt.event.ActionListener() {

          @Override
          public void actionPerformed(final java.awt.event.ActionEvent evt) {
            btnThisWeekActionPerformed(evt);
          }
        });
    jPanel2.add(btnThisWeek);

    buttonGroup1.add(btnLastWeek);
    btnLastWeek.setText(
        org.openide.util.NbBundle.getMessage(
            FortfuehrungsanlaesseDialog.class,
            "FortfuehrungsanlaesseDialog.btnLastWeek.text")); // NOI18N
    btnLastWeek.addActionListener(
        new java.awt.event.ActionListener() {

          @Override
          public void actionPerformed(final java.awt.event.ActionEvent evt) {
            btnLastWeekActionPerformed(evt);
          }
        });
    jPanel2.add(btnLastWeek);

    buttonGroup1.add(btnThisMonth);
    btnThisMonth.setText(
        org.openide.util.NbBundle.getMessage(
            FortfuehrungsanlaesseDialog.class,
            "FortfuehrungsanlaesseDialog.btnThisMonth.text")); // NOI18N
    btnThisMonth.addActionListener(
        new java.awt.event.ActionListener() {

          @Override
          public void actionPerformed(final java.awt.event.ActionEvent evt) {
            btnThisMonthActionPerformed(evt);
          }
        });
    jPanel2.add(btnThisMonth);

    buttonGroup1.add(btnLastMonth);
    btnLastMonth.setText(
        org.openide.util.NbBundle.getMessage(
            FortfuehrungsanlaesseDialog.class,
            "FortfuehrungsanlaesseDialog.btnLastMonth.text")); // NOI18N
    btnLastMonth.addActionListener(
        new java.awt.event.ActionListener() {

          @Override
          public void actionPerformed(final java.awt.event.ActionEvent evt) {
            btnLastMonthActionPerformed(evt);
          }
        });
    jPanel2.add(btnLastMonth);

    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 0;
    gridBagConstraints.gridy = 0;
    gridBagConstraints.gridheight = 2;
    gridBagConstraints.anchor = java.awt.GridBagConstraints.LINE_START;
    gridBagConstraints.insets = new java.awt.Insets(10, 10, 10, 10);
    panPeriod.add(jPanel2, gridBagConstraints);

    jPanel7.setPreferredSize(new java.awt.Dimension(50, 10));

    final javax.swing.GroupLayout jPanel7Layout = new javax.swing.GroupLayout(jPanel7);
    jPanel7.setLayout(jPanel7Layout);
    jPanel7Layout.setHorizontalGroup(
        jPanel7Layout
            .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 50, Short.MAX_VALUE));
    jPanel7Layout.setVerticalGroup(
        jPanel7Layout
            .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 88, Short.MAX_VALUE));

    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 1;
    gridBagConstraints.gridy = 0;
    gridBagConstraints.gridheight = 2;
    gridBagConstraints.fill = java.awt.GridBagConstraints.VERTICAL;
    gridBagConstraints.weightx = 1.0;
    panPeriod.add(jPanel7, gridBagConstraints);

    btnRefreshAnlaesse.setText(
        org.openide.util.NbBundle.getMessage(
            FortfuehrungsanlaesseDialog.class,
            "FortfuehrungsanlaesseDialog.btnRefreshAnlaesse.text")); // NOI18N
    btnRefreshAnlaesse.setEnabled(false);
    btnRefreshAnlaesse.addActionListener(
        new java.awt.event.ActionListener() {

          @Override
          public void actionPerformed(final java.awt.event.ActionEvent evt) {
            btnRefreshAnlaesseActionPerformed(evt);
          }
        });
    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 2;
    gridBagConstraints.gridy = 1;
    gridBagConstraints.gridwidth = 4;
    gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
    gridBagConstraints.weighty = 1.0;
    gridBagConstraints.insets = new java.awt.Insets(5, 10, 10, 10);
    panPeriod.add(btnRefreshAnlaesse, gridBagConstraints);

    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 0;
    gridBagConstraints.gridy = 0;
    gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints.weightx = 1.0;
    gridBagConstraints.insets = new java.awt.Insets(5, 5, 5, 5);
    jPanel1.add(panPeriod, gridBagConstraints);

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

    panMaster.setBorder(
        javax.swing.BorderFactory.createTitledBorder(
            org.openide.util.NbBundle.getMessage(
                FortfuehrungsanlaesseDialog.class,
                "FortfuehrungsanlaesseDialog.panMaster.border.title"))); // NOI18N
    panMaster.setLayout(new java.awt.GridBagLayout());

    jXTable1.setEnabled(false);
    jScrollPane1.setViewportView(jXTable1);

    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;
    gridBagConstraints.insets = new java.awt.Insets(5, 10, 10, 10);
    panMaster.add(jScrollPane1, gridBagConstraints);

    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;
    gridBagConstraints.insets = new java.awt.Insets(0, 0, 0, 10);
    panMasterDetail.add(panMaster, gridBagConstraints);
    panMaster
        .getAccessibleContext()
        .setAccessibleName(
            org.openide.util.NbBundle.getMessage(
                FortfuehrungsanlaesseDialog.class,
                "FortfuehrungsanlaesseDialog.panMaster.AccessibleContext.accessibleName")); // NOI18N

    panDetail.setBorder(null);
    panDetail.setMinimumSize(new java.awt.Dimension(250, 137));
    panDetail.setPreferredSize(new java.awt.Dimension(250, 244));
    panDetail.setVerifyInputWhenFocusTarget(false);
    panDetail.setLayout(new java.awt.GridBagLayout());

    jPanel3.setBorder(
        javax.swing.BorderFactory.createTitledBorder(
            org.openide.util.NbBundle.getMessage(
                FortfuehrungsanlaesseDialog.class,
                "FortfuehrungsanlaesseDialog.jPanel3.border.title"))); // NOI18N
    jPanel3.setLayout(new java.awt.GridBagLayout());

    lblDokumentLink.setText(
        org.openide.util.NbBundle.getMessage(
            FortfuehrungsanlaesseDialog.class,
            "FortfuehrungsanlaesseDialog.lblDokumentLink.text")); // NOI18N
    lblDokumentLink.setEnabled(false);
    lblDokumentLink.addMouseListener(
        new java.awt.event.MouseAdapter() {

          @Override
          public void mouseClicked(final java.awt.event.MouseEvent evt) {
            lblDokumentLinkMouseClicked(evt);
          }
        });
    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 0;
    gridBagConstraints.gridy = 0;
    gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
    gridBagConstraints.weighty = 1.0;
    gridBagConstraints.insets = new java.awt.Insets(10, 10, 10, 10);
    jPanel3.add(lblDokumentLink, gridBagConstraints);

    final javax.swing.GroupLayout jPanel5Layout = new javax.swing.GroupLayout(jPanel5);
    jPanel5.setLayout(jPanel5Layout);
    jPanel5Layout.setHorizontalGroup(
        jPanel5Layout
            .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 0, Short.MAX_VALUE));
    jPanel5Layout.setVerticalGroup(
        jPanel5Layout
            .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 0, Short.MAX_VALUE));

    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 1;
    gridBagConstraints.gridy = 0;
    gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
    gridBagConstraints.weightx = 1.0;
    jPanel3.add(jPanel5, gridBagConstraints);

    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints.weightx = 1.0;
    gridBagConstraints.insets = new java.awt.Insets(0, 0, 5, 0);
    panDetail.add(jPanel3, gridBagConstraints);

    jPanel4.setBorder(
        javax.swing.BorderFactory.createTitledBorder(
            org.openide.util.NbBundle.getMessage(
                FortfuehrungsanlaesseDialog.class,
                "FortfuehrungsanlaesseDialog.jPanel4.border.title"))); // NOI18N
    jPanel4.setLayout(new java.awt.GridBagLayout());

    lstKassenzeichen.setModel(new DefaultListModel());
    lstKassenzeichen.setEnabled(false);
    lstKassenzeichen.addMouseListener(
        new java.awt.event.MouseAdapter() {

          @Override
          public void mouseClicked(final java.awt.event.MouseEvent evt) {
            lstKassenzeichenMouseClicked(evt);
          }
        });
    lstKassenzeichen.addListSelectionListener(
        new javax.swing.event.ListSelectionListener() {

          @Override
          public void valueChanged(final javax.swing.event.ListSelectionEvent evt) {
            lstKassenzeichenValueChanged(evt);
          }
        });
    jScrollPane2.setViewportView(lstKassenzeichen);

    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 0;
    gridBagConstraints.gridy = 0;
    gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;
    gridBagConstraints.weightx = 1.0;
    gridBagConstraints.weighty = 1.0;
    gridBagConstraints.insets = new java.awt.Insets(10, 10, 10, 10);
    jPanel4.add(jScrollPane2, gridBagConstraints);

    jButton1.setText(
        org.openide.util.NbBundle.getMessage(
            FortfuehrungsanlaesseDialog.class,
            "FortfuehrungsanlaesseDialog.jButton1.text")); // NOI18N
    jButton1.setEnabled(false);
    jButton1.addActionListener(
        new java.awt.event.ActionListener() {

          @Override
          public void actionPerformed(final java.awt.event.ActionEvent evt) {
            jButton1ActionPerformed(evt);
          }
        });
    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 0;
    gridBagConstraints.gridy = 1;
    gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
    gridBagConstraints.insets = new java.awt.Insets(0, 10, 10, 10);
    jPanel4.add(jButton1, gridBagConstraints);

    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 0;
    gridBagConstraints.gridy = 1;
    gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints.weightx = 1.0;
    gridBagConstraints.weighty = 1.0;
    gridBagConstraints.insets = new java.awt.Insets(5, 0, 5, 0);
    panDetail.add(jPanel4, gridBagConstraints);

    cbxAbgearbeitet.setText(
        org.openide.util.NbBundle.getMessage(
            FortfuehrungsanlaesseDialog.class,
            "FortfuehrungsanlaesseDialog.cbxAbgearbeitet.text")); // NOI18N
    cbxAbgearbeitet.setEnabled(false);
    cbxAbgearbeitet.addActionListener(
        new java.awt.event.ActionListener() {

          @Override
          public void actionPerformed(final java.awt.event.ActionEvent evt) {
            cbxAbgearbeitetActionPerformed(evt);
          }
        });
    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 0;
    gridBagConstraints.gridy = 2;
    gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
    gridBagConstraints.insets = new java.awt.Insets(5, 0, 0, 0);
    panDetail.add(cbxAbgearbeitet, gridBagConstraints);

    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 1;
    gridBagConstraints.gridy = 0;
    gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints.weighty = 1.0;
    gridBagConstraints.insets = new java.awt.Insets(0, 10, 0, 0);
    panMasterDetail.add(panDetail, gridBagConstraints);

    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 0;
    gridBagConstraints.gridy = 1;
    gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints.weightx = 1.0;
    gridBagConstraints.weighty = 1.0;
    gridBagConstraints.insets = new java.awt.Insets(5, 5, 5, 5);
    jPanel1.add(panMasterDetail, gridBagConstraints);

    final javax.swing.GroupLayout jPanel6Layout = new javax.swing.GroupLayout(jPanel6);
    jPanel6.setLayout(jPanel6Layout);
    jPanel6Layout.setHorizontalGroup(
        jPanel6Layout
            .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 0, Short.MAX_VALUE));
    jPanel6Layout.setVerticalGroup(
        jPanel6Layout
            .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 0, Short.MAX_VALUE));

    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 0;
    gridBagConstraints.gridy = 1;
    jPanel1.add(jPanel6, gridBagConstraints);

    jPanel8.setLayout(new java.awt.GridBagLayout());

    btnCloseDialog.setText(
        org.openide.util.NbBundle.getMessage(
            FortfuehrungsanlaesseDialog.class,
            "FortfuehrungsanlaesseDialog.btnCloseDialog.text")); // NOI18N
    btnCloseDialog.addActionListener(
        new java.awt.event.ActionListener() {

          @Override
          public void actionPerformed(final java.awt.event.ActionEvent evt) {
            btnCloseDialogActionPerformed(evt);
          }
        });
    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 1;
    gridBagConstraints.gridy = 0;
    gridBagConstraints.anchor = java.awt.GridBagConstraints.LAST_LINE_END;
    gridBagConstraints.insets = new java.awt.Insets(0, 5, 0, 0);
    jPanel8.add(btnCloseDialog, gridBagConstraints);

    jProgressBar1.setIndeterminate(true);
    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 0;
    gridBagConstraints.gridy = 0;
    gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
    gridBagConstraints.weightx = 1.0;
    gridBagConstraints.insets = new java.awt.Insets(0, 0, 0, 5);
    jPanel8.add(jProgressBar1, gridBagConstraints);

    jPanel9.setOpaque(false);

    final javax.swing.GroupLayout jPanel9Layout = new javax.swing.GroupLayout(jPanel9);
    jPanel9.setLayout(jPanel9Layout);
    jPanel9Layout.setHorizontalGroup(
        jPanel9Layout
            .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 634, Short.MAX_VALUE));
    jPanel9Layout.setVerticalGroup(
        jPanel9Layout
            .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 30, Short.MAX_VALUE));

    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;
    jPanel8.add(jPanel9, gridBagConstraints);

    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 0;
    gridBagConstraints.gridy = 2;
    gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints.weightx = 1.0;
    gridBagConstraints.insets = new java.awt.Insets(5, 5, 5, 5);
    jPanel1.add(jPanel8, gridBagConstraints);

    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.gridx = 0;
    gridBagConstraints.gridy = 0;
    gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;
    gridBagConstraints.weightx = 1.0;
    gridBagConstraints.weighty = 1.0;
    gridBagConstraints.insets = new java.awt.Insets(5, 5, 5, 5);
    getContentPane().add(jPanel1, gridBagConstraints);

    pack();
  } // </editor-fold>
 /** DOCUMENT ME! */
 private void periodChanged() {
   final boolean anlaesseEnabled = (dpiFrom.getDate() != null) && (dpiTo.getDate() != null);
   btnRefreshAnlaesse.setEnabled(anlaesseEnabled);
   jXTable1.setEnabled(anlaesseEnabled);
 }