Use model of ComboBox to set active entry

The value of the ComboBox must be set using index instead of relying on the
displayed value because it may not be unique and the popdown must preselect the
current value.

issue10725
review338851002
(grafted from 19d46cf0e25c98285ffb521cbdf32358ae72eb7d)

--HG--
branch : 6.0

tryton/gui/window/view_form/view/form_gtk/dictionary.py

@@ -112,17 +112,15 @@ class DictSelectionEntry(DictEntry):
         selection_shortcuts(widget)
 
         # setting completion and selection
-        model = Gtk.ListStore(GObject.TYPE_STRING)
-        model.append(('',))
-        self._selection = {'': None}
+        model = Gtk.ListStore(GObject.TYPE_STRING, GObject.TYPE_PYOBJECT)
+        model.append(('', ""))
         width = 10
         selection = self.definition['selection']
         if self.definition.get('sort', True):
             selection.sort(key=operator.itemgetter(1))
         for value, name in selection:
             name = str(name)
-            self._selection[name] = value
-            model.append((name,))
+            model.append((name, value))
             width = max(width, len(name))
         widget.set_model(model)
         widget.set_entry_text_column(0)
@@ -132,29 +130,36 @@ class DictSelectionEntry(DictEntry):
         completion.set_model(model)
         child.set_completion(completion)
         completion.set_text_column(0)
+        completion.connect('match-selected', self.match_selected)
         return widget
 
+    def match_selected(self, completion, model, iter_):
+        value, = model.get(iter_, 1)
+        model = self.widget.get_model()
+        for i, selection in enumerate(model):
+            if selection[1] == value:
+                GLib.idle_add(self.widget.set_active, i)
+                break
+
     def get_value(self):
-        child = self.widget.get_child()
-        if not child:  # widget is destroyed
-            return
-        text = child.get_text()
-        value = None
-        if text:
-            for txt, val in list(self._selection.items()):
-                if not val:
-                    continue
-                if txt[:len(text)].lower() == text.lower():
-                    value = val
-                    if len(txt) == len(text):
-                        break
-        return value
+        active = self.widget.get_active()
+        if active < 0:
+            return None
+        else:
+            model = self.widget.get_model()
+            return model[active][1]
 
     def set_value(self, value):
-        values = dict(self.definition['selection'])
-        child = self.widget.get_child()
-        child.set_text(values.get(value, ''))
-        reset_position(child)
+        active = -1
+        model = self.widget.get_model()
+        for i, selection in enumerate(model):
+            if selection[1] == value:
+                active = i
+                break
+        self.widget.set_active(active)
+        if active == -1:
+            # When setting no item GTK doesn't clear the entry
+            self.widget.get_child().set_text('')
 
     def set_readonly(self, readonly):
         self.widget.set_sensitive(not readonly)