Support changing the global input method engine without focus.

ibus/interface/iibus.py

Index: ibus/interface/iibus.py
diff --git a/ibus/interface/iibus.py b/ibus/interface/iibus.py
index e99de6cb636855146c0f7acb7b8c00b71b00d4d5..24103038e7d448f73e2a8294596ab4cc89d23314 100644
--- a/ibus/interface/iibus.py
+++ b/ibus/interface/iibus.py
@@ -75,5 +75,20 @@ class IIBus(dbus.service.Object):
     @method(out_signature="b")
     def GetUseSysLayout(self, dbusconn): pass
 
+    @method(out_signature="b")
+    def GetUseGlobalEngine(self, dbusconn): pass
+
+    @method(out_signature="v")
+    def GetGlobalEngine(self, dbusconn): pass
+
+    @method(in_signature="s")
+    def SetGlobalEngine(self, engine_name, dbusconn): pass
+
+    @method(out_signature="b")
+    def IsGlobalEngineEnabled(self, dbusconn): pass
+
     @signal(signature="")
     def RegistryChanged(self): pass
+
+    @signal(signature="")
+    def GlobalEngineChanged(self): pass