@NotNull
  protected List<Pair<String, JPanel>> createAdditionalPanels() {
    // this method is invoked before constructor body
    myExceptionsModel = new ExceptionsTableModel(myMethod.getMethod().getThrowsList());
    myExceptionsModel.setTypeInfos(myMethod.getMethod());

    final JBTable table = new JBTable(myExceptionsModel);
    table.setStriped(true);
    table.setRowHeight(20);
    table
        .getColumnModel()
        .getColumn(0)
        .setCellRenderer(new CodeFragmentTableCellRenderer(myProject));
    final JavaCodeFragmentTableCellEditor cellEditor =
        new JavaCodeFragmentTableCellEditor(myProject);
    cellEditor.addDocumentListener(
        new DocumentAdapter() {
          @Override
          public void documentChanged(DocumentEvent e) {
            final int row = table.getSelectedRow();
            final int col = table.getSelectedColumn();
            myExceptionsModel.setValueAt(cellEditor.getCellEditorValue(), row, col);
            updateSignature();
          }
        });
    table.getColumnModel().getColumn(0).setCellEditor(cellEditor);
    table.getSelectionModel().setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    table.getSelectionModel().setSelectionInterval(0, 0);
    table.setSurrendersFocusOnKeystroke(true);

    myPropExceptionsButton =
        new AnActionButton(
            RefactoringBundle.message("changeSignature.propagate.exceptions.title"),
            null,
            PlatformIcons.NEW_EXCEPTION) {
          @Override
          public void actionPerformed(AnActionEvent e) {
            final Ref<JavaCallerChooser> chooser = new Ref<JavaCallerChooser>();
            Consumer<Set<PsiMethod>> callback =
                new Consumer<Set<PsiMethod>>() {
                  @Override
                  public void consume(Set<PsiMethod> psiMethods) {
                    myMethodsToPropagateExceptions = psiMethods;
                    myExceptionPropagationTree = chooser.get().getTree();
                  }
                };
            chooser.set(
                new JavaCallerChooser(
                    myMethod.getMethod(),
                    myProject,
                    RefactoringBundle.message("changeSignature.exception.caller.chooser"),
                    myExceptionPropagationTree,
                    callback));
            chooser.get().show();
          }
        };
    myPropExceptionsButton.setShortcut(CustomShortcutSet.fromString("alt X"));

    final JPanel panel =
        ToolbarDecorator.createDecorator(table)
            .addExtraAction(myPropExceptionsButton)
            .createPanel();
    panel.setBorder(IdeBorderFactory.createEmptyBorder(0));

    myExceptionsModel.addTableModelListener(mySignatureUpdater);

    final ArrayList<Pair<String, JPanel>> result = new ArrayList<Pair<String, JPanel>>();
    final String message =
        RefactoringBundle.message("changeSignature.exceptions.panel.border.title");
    result.add(Pair.create(message, panel));
    return result;
  }
  private void createActions(ToolbarDecorator decorator) {
    final Consumer<BaseInjection> consumer =
        new Consumer<BaseInjection>() {
          public void consume(final BaseInjection injection) {
            addInjection(injection);
          }
        };
    final Factory<BaseInjection> producer =
        new NullableFactory<BaseInjection>() {
          public BaseInjection create() {
            final InjInfo info = getSelectedInjection();
            return info == null ? null : info.injection;
          }
        };
    for (LanguageInjectionSupport support : InjectorUtils.getActiveInjectionSupports()) {
      ContainerUtil.addAll(myAddActions, support.createAddActions(myProject, consumer));
      final AnAction action = support.createEditAction(myProject, producer);
      myEditActions.put(
          support.getId(),
          action == null
              ? AbstractLanguageInjectionSupport.createDefaultEditAction(myProject, producer)
              : action);
      mySupports.put(support.getId(), support);
    }
    Collections.sort(
        myAddActions,
        new Comparator<AnAction>() {
          public int compare(final AnAction o1, final AnAction o2) {
            return Comparing.compare(
                o1.getTemplatePresentation().getText(), o2.getTemplatePresentation().getText());
          }
        });
    decorator.disableUpDownActions();
    decorator.setAddActionUpdater(
        new AnActionButtonUpdater() {
          @Override
          public boolean isEnabled(AnActionEvent e) {
            return !myAddActions.isEmpty();
          }
        });
    decorator.setAddAction(
        new AnActionButtonRunnable() {
          @Override
          public void run(AnActionButton button) {
            performAdd(button);
          }
        });
    decorator.setRemoveActionUpdater(
        new AnActionButtonUpdater() {
          @Override
          public boolean isEnabled(AnActionEvent e) {
            boolean enabled = false;
            for (InjInfo info : getSelectedInjections()) {
              if (!info.bundled) {
                enabled = true;
                break;
              }
            }
            return enabled;
          }
        });
    decorator.setRemoveAction(
        new AnActionButtonRunnable() {
          @Override
          public void run(AnActionButton button) {
            performRemove();
          }
        });

    decorator.setEditActionUpdater(
        new AnActionButtonUpdater() {
          @Override
          public boolean isEnabled(AnActionEvent e) {
            AnAction edit = getEditAction();
            if (edit != null) edit.update(e);
            return edit != null && edit.getTemplatePresentation().isEnabled();
          }
        });
    decorator.setEditAction(
        new AnActionButtonRunnable() {
          @Override
          public void run(AnActionButton button) {
            performEditAction();
          }
        });
    decorator.addExtraAction(
        new DumbAwareActionButton("Duplicate", "Duplicate", PlatformIcons.COPY_ICON) {

          @Override
          public boolean isEnabled() {
            return getEditAction() != null;
          }

          @Override
          public void actionPerformed(@NotNull AnActionEvent e) {
            final InjInfo injection = getSelectedInjection();
            if (injection != null) {
              addInjection(injection.injection.copy());
              // performEditAction(e);
            }
          }
        });

    decorator.addExtraAction(
        new DumbAwareActionButton(
            "Enable Selected Injections",
            "Enable Selected Injections",
            PlatformIcons.SELECT_ALL_ICON) {

          @Override
          public void actionPerformed(@NotNull final AnActionEvent e) {
            performSelectedInjectionsEnabled(true);
          }
        });
    decorator.addExtraAction(
        new DumbAwareActionButton(
            "Disable Selected Injections",
            "Disable Selected Injections",
            PlatformIcons.UNSELECT_ALL_ICON) {

          @Override
          public void actionPerformed(@NotNull final AnActionEvent e) {
            performSelectedInjectionsEnabled(false);
          }
        });

    new DumbAwareAction("Toggle") {
      @Override
      public void update(@NotNull AnActionEvent e) {
        SpeedSearchSupply supply = SpeedSearchSupply.getSupply(myInjectionsTable);
        e.getPresentation().setEnabled(supply == null || !supply.isPopupActive());
      }

      @Override
      public void actionPerformed(@NotNull final AnActionEvent e) {
        performToggleAction();
      }
    }.registerCustomShortcutSet(
        new CustomShortcutSet(KeyStroke.getKeyStroke(KeyEvent.VK_SPACE, 0)), myInjectionsTable);

    if (myInfos.length > 1) {
      AnActionButton shareAction =
          new DumbAwareActionButton("Move to IDE Scope", null, PlatformIcons.IMPORT_ICON) {
            {
              addCustomUpdater(
                  new AnActionButtonUpdater() {
                    @Override
                    public boolean isEnabled(AnActionEvent e) {
                      CfgInfo cfg = getTargetCfgInfo(getSelectedInjections());
                      e.getPresentation()
                          .setText(
                              cfg == getDefaultCfgInfo()
                                  ? "Move to IDE Scope"
                                  : "Move to Project Scope");
                      return cfg != null;
                    }
                  });
            }

            @Override
            public void actionPerformed(@NotNull final AnActionEvent e) {
              final List<InjInfo> injections = getSelectedInjections();
              final CfgInfo cfg = getTargetCfgInfo(injections);
              if (cfg == null) return;
              for (InjInfo info : injections) {
                if (info.cfgInfo == cfg) continue;
                if (info.bundled) continue;
                info.cfgInfo.injectionInfos.remove(info);
                cfg.addInjection(info.injection);
              }
              final int[] selectedRows = myInjectionsTable.getSelectedRows();
              myInjectionsTable.getListTableModel().setItems(getInjInfoList(myInfos));
              TableUtil.selectRows(myInjectionsTable, selectedRows);
            }

            @Nullable
            private CfgInfo getTargetCfgInfo(final List<InjInfo> injections) {
              CfgInfo cfg = null;
              for (InjInfo info : injections) {
                if (info.bundled) {
                  continue;
                }
                if (cfg == null) cfg = info.cfgInfo;
                else if (cfg != info.cfgInfo) return info.cfgInfo;
              }
              if (cfg == null) return null;
              for (CfgInfo info : myInfos) {
                if (info != cfg) return info;
              }
              throw new AssertionError();
            }
          };
      shareAction.setShortcut(
          new CustomShortcutSet(
              KeyStroke.getKeyStroke(KeyEvent.VK_SPACE, InputEvent.SHIFT_DOWN_MASK)));
      decorator.addExtraAction(shareAction);
    }
    decorator.addExtraAction(
        new DumbAwareActionButton("Import", "Import", AllIcons.Actions.Install) {

          @Override
          public void actionPerformed(@NotNull final AnActionEvent e) {
            doImportAction(e.getDataContext());
            updateCountLabel();
          }
        });
    decorator.addExtraAction(
        new DumbAwareActionButton("Export", "Export", AllIcons.Actions.Export) {

          @Override
          public void actionPerformed(@NotNull final AnActionEvent e) {
            final List<BaseInjection> injections = getInjectionList(getSelectedInjections());
            final VirtualFileWrapper wrapper =
                FileChooserFactory.getInstance()
                    .createSaveFileDialog(
                        new FileSaverDescriptor("Export Selected Injections to File...", "", "xml"),
                        myProject)
                    .save(null, null);
            if (wrapper == null) return;
            final Configuration configuration = new Configuration();
            configuration.setInjections(injections);
            final Document document = new Document(configuration.getState());
            try {
              JDOMUtil.writeDocument(document, wrapper.getFile(), "\n");
            } catch (IOException ex) {
              final String msg = ex.getLocalizedMessage();
              Messages.showErrorDialog(
                  myProject,
                  msg != null && msg.length() > 0 ? msg : ex.toString(),
                  "Export Failed");
            }
          }

          @Override
          public boolean isEnabled() {
            return !getSelectedInjections().isEmpty();
          }
        });
  }