--- a/browser_side/dialog.py	Mon Oct 14 20:54:13 2013 +0200
+++ b/browser_side/dialog.py	Tue Oct 15 13:39:21 2013 +0200
@@ -38,6 +38,7 @@
 # List here the patterns that are not allowed in contact group names
 FORBIDDEN_PATTERNS_IN_GROUP = ()
 
+
 class ContactsChooser(DialogBox):
 
     def __init__(self, host, callback, nb_contact=None, text='Please select contacts'):
@@ -46,12 +47,24 @@
         @param host: SatWebFrontend instance
         @param callback: method to call when contacts have been choosed
         @param nb_contact: number of contacts that have to be selected, None for no limit
+        If a tuple is given instead of an integer, nb_contact[0] is the minimal and
+        nb_contact[1] is the maximal number of contacts to be chosen.
         """
         self.host = host
         self.callback = callback
+        if isinstance(nb_contact, tuple):
+            if len(nb_contact) == 0:
+                nb_contact = None
+            elif len(nb_contact) == 1:
+                nb_contact = (nb_contact[0], nb_contact[0])
+        elif nb_contact is not None:
+            nb_contact = (nb_contact, nb_contact)
+        if nb_contact is None:
+            print "Need to select as many contacts as you want"
+        else:
+            print "Need to select between %d and %d contacts" % nb_contact
         self.nb_contact = nb_contact
         DialogBox.__init__(self, centered=True)
-
         content = VerticalPanel()
         content.setWidth('100%')
         self.contacts_list = ListBox()
@@ -64,7 +77,7 @@
         button_panel = HorizontalPanel()
         button_panel.addStyleName("marginAuto")
         self.choose_button = Button("Choose", self.onChoose)
-        if (nb_contact):
+        if nb_contact and nb_contact[0] > 0:
             self.choose_button.setEnabled(False)
         button_panel.add(self.choose_button)
         button_panel.add(Button("Cancel", self.onCancel))
@@ -74,7 +87,8 @@
 
     def onChange(self, sender):
         if self.nb_contact:
-            if len(self.contacts_list.getSelectedValues()) == self.nb_contact:
+            selected = len(self.contacts_list.getSelectedValues())
+            if  selected >= self.nb_contact[0] and selected <= self.nb_contact[1]:
                 self.choose_button.setEnabled(True)
             else:
                 self.choose_button.setEnabled(False)