[dconf-editor] Unduplicate _get_parent.

[Arnaud Bonatti <arnaudb src gnome org>]

commit e9fccfb8d70570af1740b4d8bfac924343b12c6b
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Fri Aug 19 21:33:07 2016 +0200

    Unduplicate _get_parent.

 editor/dconf-window.vala  |    8 ++++++++
 editor/registry-info.vala |    9 +--------
 editor/registry-view.vala |    9 +--------
 3 files changed, 10 insertions(+), 16 deletions(-)
---
diff --git a/editor/dconf-window.vala b/editor/dconf-window.vala
index d172744..fbb1449 100644
--- a/editor/dconf-window.vala
+++ b/editor/dconf-window.vala
@@ -109,6 +109,14 @@ class DConfWindow : ApplicationWindow
         return path.slice (0, path.last_index_of_char ('/') + 1);
     }
 
+    public static Widget _get_parent (Widget widget)
+    {
+        Widget? parent = widget.get_parent ();
+        if (parent == null)
+            assert_not_reached ();
+        return (!) parent;
+    }
+
     /*\
     * * Window management callbacks
     \*/
diff --git a/editor/registry-info.vala b/editor/registry-info.vala
index d67939e..d22e0bf 100644
--- a/editor/registry-info.vala
+++ b/editor/registry-info.vala
@@ -92,7 +92,7 @@ class RegistryInfo : Grid
         Label label = new Label (get_current_value_text (has_schema && ((GSettingsKey) key).is_default, 
key));
         ulong key_value_changed_handler = key.value_changed.connect (() => {
                 if (!has_schema && ((DConfKey) key).is_ghost)
-                    ((RegistryView) _get_parent (_get_parent (this))).request_path (parent_path);
+                    ((RegistryView) DConfWindow._get_parent (DConfWindow._get_parent (this))).request_path 
(parent_path);
                 else
                     label.set_text (get_current_value_text (has_schema && ((GSettingsKey) key).is_default, 
key));
             });
@@ -197,13 +197,6 @@ class RegistryInfo : Grid
                 key_editor_child.disconnect (child_activated_handler);
             });
     }
-    private Widget _get_parent (Widget widget)
-    {
-        Widget? parent = widget.get_parent ();
-        if (parent == null)
-            assert_not_reached ();
-        return (!) parent;
-    }
 
     private static KeyEditorChild create_child (Key key)
     {
diff --git a/editor/registry-view.vala b/editor/registry-view.vala
index d30123f..792143d 100644
--- a/editor/registry-view.vala
+++ b/editor/registry-view.vala
@@ -251,14 +251,7 @@ class RegistryView : Grid, PathElement
 
     private DConfWindow get_dconf_window ()
     {
-        return (DConfWindow) _get_parent (_get_parent (this));
-    }
-    private Widget _get_parent (Widget widget)
-    {
-        Widget? parent = widget.get_parent ();
-        if (parent == null)
-            assert_not_reached ();
-        return (!) parent;
+        return (DConfWindow) DConfWindow._get_parent (DConfWindow._get_parent (this));
     }
 
     /*\