'Returns and assigns to the instance a view listing all the
workspaces names.'

@scrollable(height=200)
def create_view(self, workspace_model):

    self.ws_view = Gtk.TreeView(workspace_model)
    renderer = Gtk.CellRendererText()
    column = Gtk.TreeViewColumn('Workspaces', renderer, text=0)
    self.ws_view.append_column(column)
    return self.ws_view
