From 0274aafdb08238548dd4c20c52cd5375217f4e00 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Mon, 29 Jun 2015 16:27:03 -0400
Subject: [PATCH] store all error/info/etc messages in a list inside
 Gtkmm2ext::UI, and provide a method to dump them all to a std::ostream

---
 libs/gtkmm2ext/gtk_ui.cc          | 32 +++++++++++++++++++++++++++++++
 libs/gtkmm2ext/gtkmm2ext/gtk_ui.h |  6 +++++-
 2 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/libs/gtkmm2ext/gtk_ui.cc b/libs/gtkmm2ext/gtk_ui.cc
index b5319fbea7..c4df2b7d5c 100644
--- a/libs/gtkmm2ext/gtk_ui.cc
+++ b/libs/gtkmm2ext/gtk_ui.cc
@@ -481,9 +481,41 @@ UI::do_request (UIRequest* req)
   Error Display
   ======================================================================*/
 
+void
+UI::dump_errors (std::ostream& ostr)
+{
+	Glib::Threads::Mutex::Lock lm (error_lock);
+	ostr << endl << X_("Errors/Messages:") << endl;
+	for (list<string>::const_iterator i = error_stack.begin(); i != error_stack.end(); ++i) {
+		ostr << *i << endl;
+	}
+	ostr << endl;
+}
+
 void
 UI::receive (Transmitter::Channel chn, const char *str)
 {
+	{
+		Glib::Threads::Mutex::Lock lm (error_lock);
+		switch (chn) {
+		case Transmitter::Fatal:
+			error_stack.push_back (string (X_("FATAL: ")) + str);
+			break;
+		case Transmitter::Error:
+			error_stack.push_back (string (X_("ERROR: ")) + str);
+			break;
+		case Transmitter::Warning:
+			error_stack.push_back (string (X_("WARNING: ")) + str);
+			break;
+		case Transmitter::Info:
+			error_stack.push_back (string (X_("INFO: ")) + str);
+			break;
+		case Transmitter::Throw:
+			error_stack.push_back (string (X_("THROW: ")) + str);
+			break;
+		}
+	}
+
 	if (caller_is_ui_thread()) {
 		process_error_message (chn, str);
 	} else {
diff --git a/libs/gtkmm2ext/gtkmm2ext/gtk_ui.h b/libs/gtkmm2ext/gtkmm2ext/gtk_ui.h
index 0a66accaef..177adb00ff 100644
--- a/libs/gtkmm2ext/gtkmm2ext/gtk_ui.h
+++ b/libs/gtkmm2ext/gtkmm2ext/gtk_ui.h
@@ -138,6 +138,7 @@ class LIBGTKMM2EXT_API UI : public AbstractUI<UIRequest>
 	void flush_pending ();
 	void toggle_errors ();
 	void show_errors ();
+	void dump_errors (std::ostream&);
 	void touch_display (Touchable *);
 	void set_tip (Gtk::Widget &w, const gchar *tip);
 	void set_tip (Gtk::Widget &w, const std::string &tip);
@@ -166,7 +167,7 @@ class LIBGTKMM2EXT_API UI : public AbstractUI<UIRequest>
 	sigc::signal<void> theme_changed;
 
 	static bool just_hide_it (GdkEventAny *, Gtk::Window *);
-
+	
   protected:
 	virtual void handle_fatal (const char *);
 	virtual void display_message (const char *prefix, gint prefix_len,
@@ -195,6 +196,9 @@ class LIBGTKMM2EXT_API UI : public AbstractUI<UIRequest>
 	void process_error_message (Transmitter::Channel, const char *);
 	void do_quit ();
 
+	Glib::Threads::Mutex   error_lock;
+	std::list<std::string> error_stack;
+
 	void color_selection_done (bool status);
 	bool color_selection_deleted (GdkEventAny *);
 	bool color_picked;