Custom File Palette

I find the default Mathematica IDE lacking. I am missing a simple project file tree on the left (as in eclipse, visual studio etc.)

The following would be very cool:

All your files (in a given directory) would be displayed in a Mathematica Palette. Clicking them changes to the clicked file or opens it.

Has anyone seen something like this? Can anyone put together a quick proof of concept? It should not be that difficult ...

Answer

as J.M. mentions, the Workbench is an Eclipse plug-in (and is available as such).

Now, to display all files in some directory, you can do this:

SetDirectory["~/Documents/Projects/other/playing"]

(this is an arbitrarily selected directory on my machine). Then define

doSomething[fname_] := CreateWindow[
  DialogNotebook[
   {
    TextCell[fname],
    Button["open", NotebookOpen[fname]],

    Button["beep", Beep[]],
    DefaultButton[]
    }
   ]
  ]

(this will take as an argument the file name and pop up a dialog asking what to do; I've put in placeholder actions here). Then

Grid[Partition[#, 2] &[
  Button[#, doSomething[ToFileName[Directory[], #]]] & /@ 
   FileNames[]]]

gives something like

and clicking on the names brings this up:

Of course this can be greatly elaborated.