Add invalidate method.

diff --git a/engine/demo/engine.py b/engine/demo/engine.py
index 467ad4d..7d673a8 100644 (file)
--- a/engine/demo/engine.py
+++ b/engine/demo/engine.py
@@ -13,6 +13,7 @@ class Engine (interface.IEngine):
        def __init__ (self, dbusconn, object_path):
                interface.IEngine.__init__ (self, dbusconn, object_path)
                self._dbusconn = dbusconn
+               self._is_invalidate = False
                self._preedit_string = ""
                self._lookup_table = ibus.LookupTable ()
 
@@ -34,7 +35,7 @@ class Engine (interface.IEngine):
                                return True
                        elif keyval == keysyms.BackSpace:
                                self._preedit_string = self._preedit_string[:-1]
-                               self._update ()
+                               self._invalidate ()
                                return True
                        elif keyval == keysyms.space:
                                if self._lookup_table.get_number_of_candidates () > 0:
@@ -70,7 +71,7 @@ class Engine (interface.IEngine):
                        keyval in xrange (keysyms.A, keysyms.Z + 1):
                        if state & (keysyms.CONTROL_MASK | keysyms.ALT_MASK) == 0:
                                self._preedit_string += chr (keyval)
-                               self._update ()
+                               self._invalidate ()
                                return True
                else:
                        if keyval < 128 and self._preedit_string:
@@ -78,6 +79,12 @@ class Engine (interface.IEngine):
 
                return False
 
+       def _invalidate (self):
+               if self._is_invalidate:
+                       return
+               self._is_invalidate = True
+               gobject.idle_add (self._update)
+
        def _cursor_up (self):
                if self._lookup_table.cursor_up ():
                        self._update_lookup_table ()
@@ -108,6 +115,7 @@ class Engine (interface.IEngine):
                attrs.append (ibus.AttributeUnderline (pango.UNDERLINE_SINGLE, 0, preedit_len))
                self.UpdatePreedit (self._preedit_string, attrs.to_dbus_value (), dbus.Int32 (preedit_len), preedit_len > 0)
                self._update_lookup_table ()
+               self._is_invalidate = False
 
        def _update_lookup_table (self):
                show = self._lookup_table.get_number_of_candidates () > 0