public boolean isFocused() {
    IdeFocusManager fm = IdeFocusManager.getInstance(myProject);
    Component component = fm.getFocusedDescendantFor(myToolWindow.getComponent());
    if (component != null) return true;

    Component owner = fm.getLastFocusedFor(WindowManager.getInstance().getIdeFrame(myProject));

    return owner != null && SwingUtilities.isDescendingFrom(owner, myToolWindow.getComponent());
  }
  private void init() {
    enableEvents(AWTEvent.COMPONENT_EVENT_MASK);

    final JPanel contentPane = new JPanel(new BorderLayout());
    contentPane.add(myHeader, BorderLayout.NORTH);

    JPanel innerPanel = new JPanel(new BorderLayout());
    JComponent toolWindowComponent = myToolWindow.getComponent();
    innerPanel.add(toolWindowComponent, BorderLayout.CENTER);

    final NonOpaquePanel inner = new NonOpaquePanel(innerPanel);
    inner.setBorder(new EmptyBorder(-1, 0, 0, 0));

    contentPane.add(inner, BorderLayout.CENTER);
    add(contentPane, BorderLayout.CENTER);
    if (SystemInfo.isMac) {
      setBackground(new JBColor(Gray._200, Gray._90));
    }

    // Add listeners
    registerKeyboardAction(
        new ActionListener() {
          @Override
          public void actionPerformed(final ActionEvent e) {
            ToolWindowManager.getInstance(myProject).activateEditorComponent();
          }
        },
        KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0),
        JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
  }