in-edit mode active mesh parts selection and highlight

in short: Enable active selection between mesh: vertex,edge and face

to make it more clearer: usualy when we go to object mode,select some mesh,then edit mode: and we click on 3 small buttons for mesh editing such as vertex,edge and face... we can just click for example on the mesh's angle and vertex dot will appear and it will be highlighted, then clicking on mesh line it will select and highlight the mesh edge, similar thing for selecting the polygon of the mesh

my conclusion: if that feature will be implemented into a blender it will drastically simplify and speedup the mesh manipulations