[dconf-editor] Improve tiled state detection.

[Arnaud B. <arnaudb src gnome org>]

commit 448d8611dfacd54fbc6f0be2def9bef1583e05a1
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Fri Feb 15 12:20:52 2019 +0100

    Improve tiled state detection.
    
    Gdk.WindowState.TILED is deprecated.

 editor/adaptative-window.vala | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/editor/adaptative-window.vala b/editor/adaptative-window.vala
index e8b731d..2140f0f 100644
--- a/editor/adaptative-window.vala
+++ b/editor/adaptative-window.vala
@@ -227,9 +227,15 @@ private abstract class AdaptativeWindow : ApplicationWindow
     {
         if ((event.changed_mask & Gdk.WindowState.MAXIMIZED) != 0)
             window_is_maximized = (event.new_window_state & Gdk.WindowState.MAXIMIZED) != 0;
+
         /* We don’t save this state, but track it for saving size allocation */
-        if ((event.changed_mask & Gdk.WindowState.TILED) != 0)
-            window_is_tiled = (event.new_window_state & Gdk.WindowState.TILED) != 0;
+        Gdk.WindowState tiled_state = Gdk.WindowState.TILED
+                                    | Gdk.WindowState.TOP_TILED
+                                    | Gdk.WindowState.BOTTOM_TILED
+                                    | Gdk.WindowState.LEFT_TILED
+                                    | Gdk.WindowState.RIGHT_TILED;
+        if ((event.changed_mask & tiled_state) != 0)
+            window_is_tiled = (event.new_window_state & tiled_state) != 0;
 
         return false;
     }