private JComponent createCenterPanel() {
    SimpleAsyncChangesBrowser changesBrowser = new SimpleAsyncChangesBrowser(myHelper.getProject(), false, true);

    myHeadToBranchListPanel = new CommitListPanel(
      getHeadToBranchCommits(myInitialRepo),
      DvcsBundle.message("label.branch.fully.merged.to.branch", myBranchName, myCurrentBranchName));
    myBranchToHeadListPanel = new CommitListPanel(
      getBranchToHeadCommits(myInitialRepo),
      DvcsBundle.message("label.branch.fully.merged.to.branch", myCurrentBranchName, myBranchName));

    addSelectionListener(myHeadToBranchListPanel, myBranchToHeadListPanel, changesBrowser);
    addSelectionListener(myBranchToHeadListPanel, myHeadToBranchListPanel, changesBrowser);

    myHeadToBranchListPanel.registerDiffAction(changesBrowser.getDiffAction());
    myBranchToHeadListPanel.registerDiffAction(changesBrowser.getDiffAction());

    JPanel htb = layoutCommitListPanel(true);
    JPanel bth = layoutCommitListPanel(false);

    JPanel listPanel = switch (getInfoType()) {
      case HEAD_TO_BRANCH -> htb;
      case BRANCH_TO_HEAD -> bth;
      case BOTH -> {
        Splitter lists = new Splitter(true, 0.5f);
        lists.setFirstComponent(htb);
        lists.setSecondComponent(bth);
        yield lists;
      }
    };

    Splitter rootPanel = new Splitter(false, 0.7f);
    rootPanel.setSecondComponent(changesBrowser);
    rootPanel.setFirstComponent(listPanel);
    return rootPanel;
  }
private JComponent createCenterPanel()