state update for navigation buttons

app/ui/main_app_window.py

@@ -175,7 +175,9 @@ class MainAppWindow:
         # Search
         self.__search_info_bar = builder.get_object("search_info_bar")
         self.__search_provider = SearchProvider(self.__services_view, self.__fav_view, self.__bouquets_view,
-                                                self.__services, self.__bouquets)
+                                                self.__services, self.__bouquets,
+                                                builder.get_object("search_down_button"),
+                                                builder.get_object("search_up_button"))
         self.__main_window.show()
 
     def init_drag_and_drop(self):

app/ui/main_window.glade

@@ -1247,6 +1247,7 @@
                     <child>
                       <object class="GtkButton" id="search_down_button">
                         <property name="visible">True</property>
+                        <property name="sensitive">False</property>
                         <property name="can_focus">True</property>
                         <property name="receives_default">True</property>
                         <signal name="clicked" handler="on_search_down" swapped="no"/>
@@ -1267,6 +1268,7 @@
                     <child>
                       <object class="GtkButton" id="search_up_button">
                         <property name="visible">True</property>
+                        <property name="sensitive">False</property>
                         <property name="can_focus">True</property>
                         <property name="receives_default">True</property>
                         <signal name="clicked" handler="on_search_up" swapped="no"/>

app/ui/search.py

@@ -2,7 +2,7 @@
 
 
 class SearchProvider:
-    def __init__(self, srv_view, fav_view, bqs_view, services, bouquets):
+    def __init__(self, srv_view, fav_view, bqs_view, services, bouquets, down_button, up_button):
         self._paths = []
         self._current_index = -1
         self._max_indexes = 0
@@ -11,6 +11,8 @@ class SearchProvider:
         self._bqs_view = bqs_view
         self._services = services
         self._bouquets = bouquets
+        self._up_button = up_button
+        self._down_button = down_button
 
     def search(self, text, ):
         self._current_index = -1
@@ -36,6 +38,7 @@ class SearchProvider:
     def scroll_to(self, index):
         view, path = self._paths[index]
         view.scroll_to_cell(path, None)
+        self.update_navigation_buttons()
 
     def on_search_down(self):
         if self._current_index < self._max_indexes:
@@ -47,6 +50,10 @@ class SearchProvider:
             self._current_index -= 1
             self.scroll_to(self._current_index)
 
+    def update_navigation_buttons(self):
+        self._up_button.set_sensitive(self._current_index > 0)
+        self._down_button.set_sensitive(self._current_index < self._max_indexes)
+
 
 if __name__ == "__main__":
     pass

app/ui/service_details_dialog.glade

@@ -1167,7 +1167,7 @@
                     <property name="width_chars">14</property>
                     <property name="max_width_chars">14</property>
                     <property name="primary_icon_stock">gtk-edit</property>
-                    <signal name="changed" handler="on_digit_entry_changed" swapped="no"/>
+                    <signal name="changed" handler="on_non_empty_entry_changed" swapped="no"/>
                   </object>
                   <packing>
                     <property name="left_attach">7</property>

app/ui/service_details_dialog.py

@@ -1,5 +1,4 @@
 import re
-from math import fabs
 
 from app.commons import run_idle
 from app.eparser import Service, get_satellites
@@ -25,8 +24,9 @@ class ServiceDetailsDialog:
     _DIGIT_ENTRY_ELEMENTS = ("bitstream_entry", "pcm_entry", "video_pid_entry", "pcr_pid_entry", "srv_type_entry",
                              "ac3_pid_entry", "ac3plus_pid_entry", "acc_pid_entry", "he_acc_pid_entry",
                              "teletext_pid_entry", "pls_code_entry", "stream_id_entry", "tr_flag_entry",
-                             "audio_pid_entry", "namespace_entry")
-    _NOT_EMPTY_DIGIT_ELEMENTS = ("sid_entry", "freq_entry", "rate_entry", "transponder_id_entry", "network_id_entry")
+                             "audio_pid_entry")
+    _NOT_EMPTY_DIGIT_ELEMENTS = ("sid_entry", "freq_entry", "rate_entry", "transponder_id_entry", "network_id_entry",
+                                 "namespace_entry")
 
     _DIGIT_ENTRY_NAME = "digit-entry"
 
@@ -90,7 +90,7 @@ class ServiceDetailsDialog:
         self._pls_code_entry = self._digit_elements.get("pls_code_entry")
         self._stream_id_entry = self._digit_elements.get("stream_id_entry")
         self._tr_flag_entry = self._digit_elements.get("tr_flag_entry")
-        self._namespace_entry = self._digit_elements.get("namespace_entry")
+        self._namespace_entry = self._non_empty_elements.get("namespace_entry")
         # Service elements
         self._name_entry = builder.get_object("name_entry")
         self._package_entry = builder.get_object("package_entry")
@@ -282,8 +282,7 @@ class ServiceDetailsDialog:
     @run_idle
     def set_sat_positions(self, sat_pos):
         """ Sat positions initialisation """
-        pos = float(sat_pos)
-        self._sat_pos_button.set_value(fabs(pos))
+        self._sat_pos_button.set_value(float(sat_pos))
 
     def get_sat_positions(self, path):
         try: