Prevent crashes when coming out of the add screen dialog without giving a certificate.

3 files changed, 18 insertions, 4 deletions

diff --git a/src/wx/kdm_dialog.cc b/src/wx/kdm_dialog.cc
index 6164f7fd9..02b91a1e2 100644
--- a/src/wx/kdm_dialog.cc
+++ b/src/wx/kdm_dialog.cc
@@ -276,7 +276,9 @@ KDMDialog::add_screen_clicked ()
 	shared_ptr<Cinema> c = selected_cinemas().front().second;
 	
 	ScreenDialog* d = new ScreenDialog (this, "Add Screen");
-	d->ShowModal ();
+	if (d->ShowModal () != wxID_OK) {
+		return;
+	}
 
 	shared_ptr<Screen> s (new Screen (d->name(), d->certificate()));
 	c->add_screen (s);
diff --git a/src/wx/screen_dialog.cc b/src/wx/screen_dialog.cc
index 6584e1ad6..32a0bce43 100644
--- a/src/wx/screen_dialog.cc
+++ b/src/wx/screen_dialog.cc
@@ -65,7 +65,9 @@ ScreenDialog::ScreenDialog (wxWindow* parent, string title, string name, shared_
 	overall_sizer->Layout ();
 	overall_sizer->SetSizeHints (this);
 
-	_certificate_load->Connect (wxID_ANY, wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler (ScreenDialog::load_certificate), 0, this);
+	_certificate_load->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&ScreenDialog::load_certificate, this));
+
+	setup_sensitivity ();
 }
 
 string
@@ -81,7 +83,7 @@ ScreenDialog::certificate () const
 }
 
 void
-ScreenDialog::load_certificate (wxCommandEvent &)
+ScreenDialog::load_certificate ()
 {
 	wxFileDialog* d = new wxFileDialog (this, _("Select Certificate File"));
 
@@ -95,4 +97,13 @@ ScreenDialog::load_certificate (wxCommandEvent &)
 	}
 	
 	d->Destroy ();
+
+	setup_sensitivity ();
+}
+
+void
+ScreenDialog::setup_sensitivity ()
+{
+	wxButton* ok = dynamic_cast<wxButton*> (FindWindowById (wxID_OK, this));
+	ok->Enable (_certificate);
 }
diff --git a/src/wx/screen_dialog.h b/src/wx/screen_dialog.h
index 1bd4a89a9..271ae2055 100644
--- a/src/wx/screen_dialog.h
+++ b/src/wx/screen_dialog.h
@@ -30,7 +30,8 @@ public:
 	boost::shared_ptr<libdcp::Certificate> certificate () const;
 	
 private:
-	void load_certificate (wxCommandEvent &);
+	void load_certificate ();
+	void setup_sensitivity ();
 	
 	wxTextCtrl* _name;
 	wxButton* _certificate_load;