Added to check the input purpose for gnome-shell password dialog.

engine/engine.py

@@ -126,6 +126,10 @@ def __init__(self, bus, object_path):
         # init state
         self.__idle_id = 0
         self.__prop_dict = {}
+        self.__input_purpose = 0
+        self.__has_input_purpose = False
+        if hasattr(IBus, 'InputPurpose'):
+            self.__has_input_purpose = True
         try:
             self.__is_utf8 = (getpreferredencoding().lower() == 'utf-8')
         except:
@@ -963,11 +967,17 @@ def do_focus_in(self):
             self.__lookup_table.set_page_size(size)
 
     def do_focus_out(self):
+        if self.__has_input_purpose:
+            self.__input_purpose = 0
         mode = self.__prefs.get_value('common', 'behavior_on_focus_out')
         if mode == 0 or mode == 1:
             self.__reset()
             self.__invalidate()
 
+    def do_set_content_type(self, purpose, hints):
+        if self.__has_input_purpose:
+            self.__input_purpose = purpose
+
     def do_disable(self):
         self.__reset()
         self.__invalidate()
@@ -1807,6 +1817,10 @@ def T2():
         return True
 
     def __process_key_event_internal2(self, keyval, keycode, state):
+        if self.__has_input_purpose and \
+           self.__input_purpose == IBus.InputPurpose.PASSWORD:
+            return False
+
         if Engine.__typing_mode == jastring.TYPING_MODE_THUMB_SHIFT and \
            Engine.__input_mode not in [INPUT_MODE_LATIN, INPUT_MODE_WIDE_LATIN]:
             return self.process_key_event_thumb(keyval, keycode, state)