Allow to pass parameters when open pop_up (urwid#480)

Author: cielong

.DS_Store

@@ -567,20 +567,20 @@ def mouse_event(self, size, event, button, x, y, focus):
 
 
 class PopUpLauncher(delegate_to_widget_mixin('_original_widget'),
-        WidgetDecoration):
+                    WidgetDecoration):
     def __init__(self, original_widget):
         self.__super.__init__(original_widget)
         self._pop_up_widget = None
 
-    def create_pop_up(self):
+    def create_pop_up(self, *args, **kwargs):
         """
         Subclass must override this method and return a widget
         to be used for the pop-up.  This method is called once each time
         the pop-up is opened.
         """
         raise NotImplementedError("Subclass must override this method")
 
-    def get_pop_up_parameters(self):
+    def get_pop_up_parameters(self, *args, **kwargs):
         """
         Subclass must override this method and have it return a dict, eg:
 
@@ -590,8 +590,8 @@ def get_pop_up_parameters(self):
         """
         raise NotImplementedError("Subclass must override this method")
 
-    def open_pop_up(self):
-        self._pop_up_widget = self.create_pop_up()
+    def open_pop_up(self, *args, **kwargs):
+        self._pop_up_widget = self.create_pop_up(*args, **kwargs)
         self._invalidate()
 
     def close_pop_up(self):
@@ -602,7 +602,7 @@ def render(self, size, focus=False):
         canv = self.__super.render(size, focus)
         if self._pop_up_widget:
             canv = CompositeCanvas(canv)
-            canv.set_pop_up(self._pop_up_widget, **self.get_pop_up_parameters())
+            canv.set_pop_up(self._pop_up_widget, **self.get_pop_up_parameters(size, focus))
         return canv