[gtk/wip/carlosg/imwayland-for-master: 5/12] imwayland: Fix clearing of preedit text in webkitgtk

[Carlos Garnacho <carlosg src gnome org>]

commit c4b4e90f9841923b78354afed1b298d6a26c9135
Author: Dorota Czaplejewicz <dorota czaplejewicz puri sm>
Date:   Tue Sep 11 12:12:28 2018 +0000

    imwayland: Fix clearing of preedit text in webkitgtk
    
    Fixes webkitgtk misbehaviour as outlined in https://gitlab.gnome.org/GNOME/gtk/issues/1316#note_312942 , 
which was introduced in 49b17e6c.
    The preedit will be cleared on exit only if it is already present.

 gtk/gtkimcontextwayland.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkimcontextwayland.c b/gtk/gtkimcontextwayland.c
index 13eea1b407..ee9902fa21 100644
--- a/gtk/gtkimcontextwayland.c
+++ b/gtk/gtkimcontextwayland.c
@@ -638,8 +638,11 @@ gtk_im_context_wayland_focus_out (GtkIMContext *context)
   commit_state (context_wayland);
 
   /* after disable, incoming state changes won't take effect anyway */
-  text_input_preedit (global, global->text_input, NULL, 0, 0);
-  text_input_preedit_apply (global);
+  if (context_wayland->current_preedit.text)
+    {
+      text_input_preedit (global, global->text_input, NULL, 0, 0);
+      text_input_preedit_apply (global);
+    }
 
   global->current = NULL;
 }