frontends (tools/xmui): implement ValueGetter.items and XMLUIPanel.values to get a map from widget name to values

sat_frontends/tools/xmlui.py

@@ -364,6 +364,7 @@ class XMLUIBase(object):
 
 class ValueGetter(object):
     """dict like object which return values of widgets"""
+    # FIXME: widget which can keep multiple values are not handled
 
     def __init__(self, widgets, attr="value"):
         self.attr = attr
@@ -378,6 +379,17 @@ class ValueGetter(object):
     def keys(self):
         return list(self.widgets.keys())
 
+    def items(self):
+        for name, widget in self.widgets.items():
+            try:
+                value = widget.value
+            except AttributeError:
+                try:
+                    value = list(widget.values)
+                except AttributeError:
+                    continue
+            yield name, value
+
 
 class XMLUIPanel(XMLUIBase):
     """XMLUI Panel
@@ -426,6 +438,11 @@ class XMLUIPanel(XMLUIBase):
     def main_cont(self):
         return self._main_cont
 
+    @property
+    def values(self):
+        """Dict of all widgets values"""
+        return dict(self.widget_value.items())
+
     @main_cont.setter
     def main_cont(self, value):
         if self._main_cont is not None: