fixes and refactoring in autocomplete

setzer/app/autocomplete_provider/autocomplete_provider.py

@@ -75,7 +75,7 @@ def __init__(self, resources_path, workspace, latex_parser_regex, bibtex_parser_
         self.parse_included_files()
         GObject.timeout_add(2000, self.parse_included_files)
 
-    def get_items_for_completion_window(self, current_word, last_tabbed_command):
+    def get_items_for_completion_window(self, current_word, last_tabbed_command=None):
         items = list()
 
         items_all = self.get_items(current_word)
@@ -98,7 +98,7 @@ def get_items_for_completion_window(self, current_word, last_tabbed_command):
 
         return items
 
-    def get_begin_end_items(self, word, last_tabbed_command):
+    def get_begin_end_items(self, word, last_tabbed_command=None):
         try: items_all = self.static_begin_end_proposals[word.lower()]
         except KeyError: items = list()
         else:

setzer/document/autocomplete/autocomplete_viewgtk.py

@@ -145,7 +145,7 @@ def do_get_request_mode(self):
 
     def update_position(self):
         start_iter = self.content.source_buffer.get_iter_at_mark(self.content.source_buffer.get_insert())
-        start_iter.backward_chars(self.model.mode.get_offset())
+        start_iter.backward_chars(self.model.get_current_word_len())
         self.x_position, self.y_position = self.content.get_screen_offsets_by_iter(start_iter)
 
     def update_margins(self):
@@ -170,7 +170,7 @@ def update_sizes(self):
         self.scrolled_window.set_min_content_width(35 * self.char_width)
 
     def update_visibility(self):
-        if self.model.mode.will_show and self.position_is_visible() and not self.focus_hide and len(self.model.items) > 0:
+        if self.model.is_visible():
             self.show_all()
         else:
             self.hide()