/** Applies specified decoration. */
  public final void apply(@NotNull WindowInfoImpl info) {
    if (Comparing.equal(myInfo, info) || myProject == null || myProject.isDisposed()) {
      return;
    }
    myInfo = info;

    // Anchor
    final ToolWindowAnchor anchor = myInfo.getAnchor();
    if (info.isSliding()) {
      myDivider.invalidate();
      if (ToolWindowAnchor.TOP == anchor) {
        add(myDivider, BorderLayout.SOUTH);
      } else if (ToolWindowAnchor.LEFT == anchor) {
        add(myDivider, BorderLayout.EAST);
      } else if (ToolWindowAnchor.BOTTOM == anchor) {
        add(myDivider, BorderLayout.NORTH);
      } else if (ToolWindowAnchor.RIGHT == anchor) {
        add(myDivider, BorderLayout.WEST);
      }
      myDivider.setPreferredSize(new Dimension(0, 0));
    } else { // docked and floating windows don't have divider
      remove(myDivider);
    }

    validate();
    repaint();

    // Push "apply" request forward

    if (myInfo.isFloating() && myInfo.isVisible()) {
      final FloatingDecorator floatingDecorator =
          (FloatingDecorator) SwingUtilities.getAncestorOfClass(FloatingDecorator.class, this);
      if (floatingDecorator != null) {
        floatingDecorator.apply(myInfo);
      }
    }

    myToolWindow.getContentUI().setType(myInfo.getContentUiType());
    setBorder(new InnerPanelBorder(myToolWindow));
  }