setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
MyDoggyToolWindowManager myDoggyToolWindowManager = new MyDoggyToolWindowManager();
toolWindowManager = myDoggyToolWindowManager;
ContentManager contentManager = toolWindowManager.getContentManager();
MultiSplitContentManagerUI contentManagerUI = new MyDoggyMultiSplitContentManagerUI();
contentManager.setContentManagerUI(contentManagerUI);
contentManagerUI.setShowAlwaysTab(true);
contentManagerUI.setTabPlacement(TabPlacement.TOP);
getContentPane().add(myDoggyToolWindowManager, BorderLayout.CENTER);
JPopupMenu popupMenu = new JPopupMenu("CPM");
popupMenu.add("1");