docs: @Override
      public void initialize() {
  
          Font buttonFont = viewSource.getFont();
          viewSource.setFont(buttonFont.deriveFont(buttonFont.getSize() / 2));
          viewSource.setPreferredSize(new Dimension(150, 15));
          viewSource.setEnabled(false);
  
          topLeftSPane = frame.mainFrameTree.bugListPanel();
  
          JPanel sourceTitlePanel = new JPanel();
          sourceTitlePanel.setLayout(new BorderLayout());
  
          JPanel sourcePanel = new JPanel();
          BorderLayout sourcePanelLayout = new BorderLayout();
          sourcePanelLayout.setHgap(3);
          sourcePanelLayout.setVgap(3);
          sourcePanel.setLayout(sourcePanelLayout);
          sourceTitle = new JLabel();
          sourceTitle.setText(L10N.getLocalString("txt.source_listing", ""));
  
          sourceTitlePanel.setBorder(new EmptyBorder(3, 3, 3, 3));
          sourceTitlePanel.add(viewSource, BorderLayout.EAST);
          sourceTitlePanel.add(sourceTitle, BorderLayout.CENTER);
  
          sourcePanel.setBorder(new LineBorder(Color.GRAY));
          sourcePanel.add(sourceTitlePanel, BorderLayout.NORTH);
          sourcePanel.add(frame.createSourceCodePanel(), BorderLayout.CENTER);
          sourcePanel.add(frame.createSourceSearchPanel(), BorderLayout.SOUTH);
          topSPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, topLeftSPane, sourcePanel);
          topSPane.setOneTouchExpandable(true);
          topSPane.setContinuousLayout(true);
          topSPane.setDividerLocation(GUISaveState.getInstance().getSplitTop());
          removeSplitPaneBorders(topSPane);
  
          summarySPane = frame.summaryTab();
          mainSPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, topSPane, summarySPane);
          mainSPane.setOneTouchExpandable(true);
          mainSPane.setContinuousLayout(true);
          mainSPane.setDividerLocation(GUISaveState.getInstance().getSplitMain());
          removeSplitPaneBorders(mainSPane);
  
          frame.setLayout(new BorderLayout());
          frame.add(mainSPane, BorderLayout.CENTER);
          frame.add(frame.statusBar(), BorderLayout.SOUTH);
  
      }