From a9017504a0e3c152aba6ea8ac2dfa89183a362cb Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Sat, 21 Jan 2023 01:07:01 +0100
Subject: [PATCH] Fix error when OK-ing a text track dialog with no language
 (#2430).

---
 src/wx/dcp_text_track_dialog.cc | 13 +++++++++++++
 src/wx/dcp_text_track_dialog.h  |  2 ++
 2 files changed, 15 insertions(+)

diff --git a/src/wx/dcp_text_track_dialog.cc b/src/wx/dcp_text_track_dialog.cc
index be31de0ce..d033541d2 100644
--- a/src/wx/dcp_text_track_dialog.cc
+++ b/src/wx/dcp_text_track_dialog.cc
@@ -36,6 +36,9 @@ DCPTextTrackDialog::DCPTextTrackDialog (wxWindow* parent)
 	_language = new LanguageTagWidget (this, wxT(""), boost::none);
 	add (_language->sizer());
 
+	_language->Changed.connect(boost::bind(&DCPTextTrackDialog::set_sensitivity, this));
+
+	set_sensitivity();
 	layout ();
 }
 
@@ -46,3 +49,13 @@ DCPTextTrackDialog::get () const
 	DCPOMATIC_ASSERT (_language->get());
 	return DCPTextTrack(wx_to_std(_name->GetValue()), _language->get());
 }
+
+
+void
+DCPTextTrackDialog::set_sensitivity()
+{
+	if (auto ok = dynamic_cast<wxButton *>(FindWindowById(wxID_OK, this))) {
+		ok->Enable(static_cast<bool>(_language->get()));
+	}
+}
+
diff --git a/src/wx/dcp_text_track_dialog.h b/src/wx/dcp_text_track_dialog.h
index 41a91b0d0..c1d7eec56 100644
--- a/src/wx/dcp_text_track_dialog.h
+++ b/src/wx/dcp_text_track_dialog.h
@@ -39,6 +39,8 @@ public:
 	DCPTextTrack get () const;
 
 private:
+	void set_sensitivity();
+
 	wxTextCtrl* _name;
 	LanguageTagWidget* _language;
 };
-- 
2.30.2