[meld/ui-next] dirdiff: Fix focus handling in cursor change event

[Kai Willadsen <kaiw src gnome org>]

commit 931127888252d4c5e85cbe87926390587aa10622
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sun Feb 17 09:14:24 2019 +1000

    dirdiff: Fix focus handling in cursor change event
    
    The existing handling does the wrong thing when e.g., the toolbar is
    focused.
    
    This is part of a broader issue with using the _get_focused_pane()
    helper, but that's a larger problem to solve.

 meld/dirdiff.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/meld/dirdiff.py b/meld/dirdiff.py
index b2d5ddaa..82f3b1a8 100644
--- a/meld/dirdiff.py
+++ b/meld/dirdiff.py
@@ -1156,9 +1156,9 @@ class DirDiff(Gtk.VBox, tree.TreeviewCommon, MeldDoc):
                 act.set_sensitive(False)
 
     @Template.Callback()
-    def on_treeview_cursor_changed(self, *args):
-        pane = self._get_focused_pane()
-        if pane is None or len(self.model) == 0:
+    def on_treeview_cursor_changed(self, view):
+        pane = self.treeview.index(view)
+        if len(self.model) == 0:
             return
 
         cursor_path, cursor_col = self.treeview[pane].get_cursor()