[gnote] Add signal for widget change in popover

[Aurimas Černius <aurimasc src gnome org>]

commit 7417d66e7487828cfed66b0b2ab3771def0940b4
Author: Aurimas Černius <aurisc4 gmail com>
Date:   Sat Dec 12 20:09:39 2015 +0200

    Add signal for widget change in popover

 src/mainwindowembeds.hpp |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/mainwindowembeds.hpp b/src/mainwindowembeds.hpp
index d1f6dd4..3b4db42 100644
--- a/src/mainwindowembeds.hpp
+++ b/src/mainwindowembeds.hpp
@@ -92,6 +92,8 @@ class HasActions
 public:
   virtual std::vector<Gtk::Widget*> get_popover_widgets() = 0;
   virtual std::vector<MainWindowAction::Ptr> get_widget_actions() = 0;
+
+  sigc::signal<void> signal_popover_widgets_changed;
 };
 
 }