[gnote: 1/2] noteaddin: Fix newly enabled addin not working for opened notes

[Aurimas Černius <aurimasc src gnome org>]

commit 1c295905251aaa5d031531392eab5575da2d87b9
Author: Jonathan Kang <jonathankang gnome org>
Date:   Wed Sep 2 09:11:07 2020 +0800

    noteaddin: Fix newly enabled addin not working for opened notes

 src/noteaddin.cpp | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/src/noteaddin.cpp b/src/noteaddin.cpp
index 612bc8d8..ddb60ca0 100644
--- a/src/noteaddin.cpp
+++ b/src/noteaddin.cpp
@@ -39,7 +39,13 @@ namespace gnote {
       sigc::mem_fun(*this, &NoteAddin::on_note_opened_event));
     initialize();
     if(m_note->is_opened()) {
+      NoteWindow * window = get_window();
+
       on_note_opened();
+      /* Connect these two signals here, because signal_opened won't emit for
+       * opening already opened notes. */
+      window->signal_foregrounded.connect(sigc::mem_fun(*this, &NoteAddin::on_note_foregrounded));
+      window->signal_backgrounded.connect(sigc::mem_fun(*this, &NoteAddin::on_note_backgrounded));
     }
   }