From 08b1a9d52082612d99a209dc3841792a69010374 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Fri, 4 Jul 2014 07:48:41 -0400
Subject: [PATCH] add ActionManager::enable_accelerators(), which takes all
 known Actions and registers them via the UIManager as accelerators.

This makes them available for use with key bindings/shortcuts/accelerators even if they have no proxy widget
---
 libs/gtkmm2ext/actions.cc          | 46 ++++++++++++++++++++++++++++++
 libs/gtkmm2ext/gtkmm2ext/actions.h |  1 +
 2 files changed, 47 insertions(+)

diff --git a/libs/gtkmm2ext/actions.cc b/libs/gtkmm2ext/actions.cc
index f4159c71e2..5f853b0170 100644
--- a/libs/gtkmm2ext/actions.cc
+++ b/libs/gtkmm2ext/actions.cc
@@ -34,6 +34,8 @@
 #include <gtkmm/accelmap.h>
 #include <gtkmm/uimanager.h>
 
+#include <glibmm/miscutils.h>
+
 #include "pbd/error.h"
 
 #include "gtkmm2ext/actions.h"
@@ -235,6 +237,50 @@ ActionManager::get_all_actions (vector<string>& names, vector<string>& paths, ve
 	}
 }
 
+void
+ActionManager::enable_accelerators ()
+{
+	/* the C++ API for functions used here appears to be broken in
+	   gtkmm2.6, so we fall back to the C level.
+	*/
+
+	GList* list = gtk_ui_manager_get_action_groups (ui_manager->gobj());
+	GList* node;
+	GList* acts;
+	string ui_string = "<ui>";
+
+	/* get all actions, build a string describing them all as <accelerator
+	 * action="name"/>
+	 */
+
+	for (node = list; node; node = g_list_next (node)) {
+
+		GtkActionGroup* group = (GtkActionGroup*) node->data;
+
+		for (acts = gtk_action_group_list_actions (group); acts; acts = g_list_next (acts)) {
+			ui_string += "<accelerator action=\"";
+			
+			/* OK, this is pretty stupid ... there is the full
+			 * accel path returned by gtk_action_get_accel_path ()
+			 * but of course the UIManager doesn't use that, but
+			 * just a name, which is the last component of the
+			 * path. What a totally ridiculous design.
+			 */
+
+			string fullpath = gtk_action_get_accel_path ((GtkAction*) acts->data);
+
+			ui_string += Glib::path_get_basename (fullpath);
+			ui_string += "\"/>";
+		}
+	}
+
+	ui_string += "</ui>";
+
+	/* and load it */
+
+	ui_manager->add_ui_from_string (ui_string);
+}
+
 struct ActionState {
 	GtkAction* action;
 	bool       sensitive;
diff --git a/libs/gtkmm2ext/gtkmm2ext/actions.h b/libs/gtkmm2ext/gtkmm2ext/actions.h
index 536bd326be..d13a16f2d5 100644
--- a/libs/gtkmm2ext/gtkmm2ext/actions.h
+++ b/libs/gtkmm2ext/gtkmm2ext/actions.h
@@ -50,6 +50,7 @@ namespace ActionManager {
 	LIBGTKMM2EXT_API extern void set_toggle_action (const char* group, const char* name, bool);
 
 	LIBGTKMM2EXT_API extern void add_action_group (Glib::RefPtr<Gtk::ActionGroup>);
+	LIBGTKMM2EXT_API extern void enable_accelerators ();
 
 	LIBGTKMM2EXT_API extern Glib::RefPtr<Gtk::Action> register_action (Glib::RefPtr<Gtk::ActionGroup> group,
 						   const char * name, const char * label);