private void initialize() {
    if (myIsInitialized) {
      return;
    }

    myIsInitialized = true;
    myIsDisposed = false;

    myContentManager = ContentFactory.SERVICE.getInstance().createContentManager(true, myProject);
    myContentManager.addContentManagerListener(
        new ContentManagerAdapter() {
          public void contentRemoved(ContentManagerEvent event) {
            JComponent component = event.getContent().getComponent();
            JComponent removedComponent =
                component instanceof CvsTabbedWindowComponent
                    ? ((CvsTabbedWindowComponent) component).getComponent()
                    : component;
            if (removedComponent == myErrorsView) {
              myErrorsView.dispose();
              myErrorsView = null;
            } else if (myOutput != null && removedComponent == myOutput.getComponent()) {
              EditorFactory.getInstance().releaseEditor(myOutput);
              myOutput = null;
            }
          }
        });

    ToolWindowManager toolWindowManager = ToolWindowManager.getInstance(myProject);
    ToolWindow toolWindow =
        toolWindowManager.registerToolWindow(
            ToolWindowId.CVS, myContentManager.getComponent(), ToolWindowAnchor.BOTTOM);
    toolWindow.setIcon(AllIcons.Providers.Cvs);
    toolWindow.installWatcher(myContentManager);
  }