--- a/frontends/src/jp/base.py	Sat Jan 23 20:01:28 2016 +0100
+++ b/frontends/src/jp/base.py	Sat Jan 23 20:04:28 2016 +0100
@@ -393,34 +393,6 @@
                 return "%s/%s" % (_jid.bare, main_resource)
         return param_jid
 
-    def progressUpdate(self):
-        """This method is continualy called to update the progress bar"""
-        data = self.bridge.progressGet(self.progress_id, self.profile)
-        if data:
-            try:
-                size = data['size']
-            except KeyError:
-                self.disp(_(u"file size is not known, we can't show a progress bar"), 1, error=True)
-                return False
-            if self.pbar is None:
-                #first answer, we must construct the bar
-                self.pbar = progressbar.ProgressBar(int(size),
-                                                    [_(u"Progress: "),progressbar.Percentage(),
-                                                     " ",
-                                                     progressbar.Bar(),
-                                                     " ",
-                                                     progressbar.FileTransferSpeed(),
-                                                     " ",
-                                                     progressbar.ETA()])
-                self.pbar.start()
-
-            self.pbar.update(int(data['position']))
-
-        elif self.pbar is not None:
-            return False
-
-        return True
-
 
 class CommandBase(object):
 
@@ -506,7 +478,7 @@
         else:
             if self.host.watch_progress and uid == self.progress_id:
                 self.onProgressStarted(metadata)
-                GLib.timeout_add(PROGRESS_DELAY, self.host.progressUpdate)
+                GLib.timeout_add(PROGRESS_DELAY, self.progressUpdate)
 
     def progressFinishedHandler(self, uid, metadata, profile):
         if profile != self.profile:
@@ -530,13 +502,65 @@
                 self.onProgressError(message)
                 self.host.quitFromSignal(1)
 
+    def progressUpdate(self):
+        """This method is continualy called to update the progress bar"""
+        data = self.host.bridge.progressGet(self.progress_id, self.profile)
+        if data:
+            try:
+                size = data['size']
+            except KeyError:
+                self.disp(_(u"file size is not known, we can't show a progress bar"), 1, error=True)
+                return False
+            if self.host.pbar is None:
+                #first answer, we must construct the bar
+                self.host.pbar = progressbar.ProgressBar(int(size),
+                                                    [_(u"Progress: "),progressbar.Percentage(),
+                                                     " ",
+                                                     progressbar.Bar(),
+                                                     " ",
+                                                     progressbar.FileTransferSpeed(),
+                                                     " ",
+                                                     progressbar.ETA()])
+                self.host.pbar.start()
+
+            self.host.pbar.update(int(data['position']))
+
+        elif self.host.pbar is not None:
+            return False
+
+        self.onProgressUpdate(data)
+
+        return True
+
     def onProgressStarted(self, metadata):
+        """Called when progress has just started
+
+        can be overidden by a command
+        @param metadata(dict): metadata as sent by bridge.progressStarted
+        """
         self.disp(_(u"Operation started"), 2)
 
+    def onProgressUpdate(self, metadata):
+        """Method called on each progress updata
+
+        can be overidden by a command to handle progress metadata
+        @para metadata(dict): metadata as returned by bridge.progressGet
+        """
+        pass
+
     def onProgressFinished(self, metadata):
+        """Called when progress has just finished
+
+        can be overidden by a command
+        @param metadata(dict): metadata as sent by bridge.progressFinished
+        """
         self.disp(_(u"Operation successfully finished"), 2)
 
     def onProgressError(self, error_msg):
+        """Called when a progress failed
+
+        @param error_msg(unicode): error message as sent by bridge.progressError
+        """
         self.disp(_(u"Error while doing operation: {}").format(error_msg), error=True)
 
     def disp(self, msg, verbosity=0, error=False):