@SGaist
It's not enabled by default but it's available as a widget that you can place on the panel.
Please tell me if I'm wrong here:
Each application is given an area in the framebuffer to do its drawings and WM place additional window borders , shadows , effects and some handles to control windows.
But I wonder how can WM separate toolbars from the window ? Are toolbars placed on some queue or special buffer which is visible to WM and DE(to use with the global menu widget)?