one less annoying compiler warning.

[ardour.git] / libs / gtkmm2ext / actions.cc

diff --git a/libs/gtkmm2ext/actions.cc b/libs/gtkmm2ext/actions.cc
index 200308a254b3bdbafae9b32ed89af930eaf3b115..5f853b0170a2a5686e520ce1dc5b527eaa782a77 100644 (file)
--- a/libs/gtkmm2ext/actions.cc
+++ b/libs/gtkmm2ext/actions.cc
@@ -21,8 +21,11 @@
 #include <vector>
 #include <string>
 #include <list>
+#include <stack>
 #include <stdint.h>
 
+#include <boost/shared_ptr.hpp>
+
 #include <gtk/gtkaccelmap.h>
 #include <gtk/gtkuimanager.h>
 #include <gtk/gtkactiongroup.h>
@@ -31,6 +34,8 @@
 #include <gtkmm/accelmap.h>
 #include <gtkmm/uimanager.h>
 
+#include <glibmm/miscutils.h>
+
 #include "pbd/error.h"
 
 #include "gtkmm2ext/actions.h"
@@ -232,6 +237,125 @@ 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;
+       ActionState (GtkAction* a, bool s) : action (a), sensitive (s) {}
+};
+
+typedef std::vector<ActionState> ActionStates;
+
+static std::stack<boost::shared_ptr<ActionStates> > state_stack;
+
+static boost::shared_ptr<ActionStates>
+get_action_state ()
+{
+       boost::shared_ptr<ActionStates> state = boost::shared_ptr<ActionStates>(new ActionStates);
+       
+       /* 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 (ActionManager::ui_manager->gobj());
+       GList* node;
+       GList* acts;
+
+       for (node = list; node; node = g_list_next (node)) {
+
+               GtkActionGroup* group = (GtkActionGroup*) node->data;
+
+               /* first pass: collect them all */
+
+               typedef std::list<Glib::RefPtr<Gtk::Action> > action_list;
+               action_list the_acts;
+
+               for (acts = gtk_action_group_list_actions (group); acts; acts = g_list_next (acts)) {
+                       GtkAction* action = (GtkAction*) acts->data;
+
+                       state->push_back (ActionState (action, gtk_action_get_sensitive (action)));
+               }
+       }
+       
+       return state;
+}
+
+void
+ActionManager::push_action_state ()
+{
+       state_stack.push (get_action_state());
+}
+
+void
+ActionManager::pop_action_state ()
+{
+       if (state_stack.empty()) {
+               warning << string_compose (_("programming error: %1"), X_("ActionManager::pop_action_state called with empty stack")) << endmsg;
+               return;
+       }
+
+       boost::shared_ptr<ActionStates> as = state_stack.top ();
+       state_stack.pop ();
+       
+       for (ActionStates::iterator i = as->begin(); i != as->end(); ++i) {
+               gtk_action_set_sensitive ((*i).action, (*i).sensitive);
+       }
+}
+
+void
+ActionManager::disable_all_actions ()
+{
+       push_action_state ();
+       boost::shared_ptr<ActionStates> as = state_stack.top ();
+       
+       for (ActionStates::iterator i = as->begin(); i != as->end(); ++i) {
+               gtk_action_set_sensitive ((*i).action, false);
+       }
+}
+
 void
 ActionManager::add_action_group (RefPtr<ActionGroup> grp)
 {