[glibmm] ActionMap: Add add_action(name, slot).

[Murray Cumming <murrayc src gnome org>]

commit adbf749ac8342832c56c149c622270e09c712d83
Author: Murray Cumming <murrayc murrayc com>
Date:   Mon Jul 22 12:22:01 2013 +0200

    ActionMap: Add add_action(name, slot).
    
    This is a convenience method similar to
    g_action_map_add_action_entries() in C.

 gio/src/actionmap.ccg |    8 ++++++++
 gio/src/actionmap.hg  |   20 +++++++++++++++++++-
 2 files changed, 27 insertions(+), 1 deletions(-)
---
diff --git a/gio/src/actionmap.ccg b/gio/src/actionmap.ccg
index e80e599..9e3c562 100644
--- a/gio/src/actionmap.ccg
+++ b/gio/src/actionmap.ccg
@@ -18,8 +18,16 @@
  */
 
 #include <giomm/action.h>
+#include <giomm/simpleaction.h>
 
 namespace Gio
 {
 
+Glib::RefPtr<SimpleAction> ActionMap::add_action(const Glib::ustring& name, const ActivateSlot& slot)
+{
+  Glib::RefPtr<SimpleAction> action = SimpleAction::create(name);
+  action->signal_activate().connect(slot);
+  return action;
+}
+
 } // namespace Gio
diff --git a/gio/src/actionmap.hg b/gio/src/actionmap.hg
index 3a51893..05fa572 100644
--- a/gio/src/actionmap.hg
+++ b/gio/src/actionmap.hg
@@ -18,6 +18,7 @@
  */
 
 #include <glibmm/interface.h>
+#include <giomm/simpleaction.h>
 
 _DEFS(giomm,gio)
 _PINCLUDE(glibmm/private/interface_p.h)
@@ -54,7 +55,24 @@ public:
   _WRAP_METHOD(Glib::RefPtr<Action> lookup_action(const Glib::ustring& action_name), 
g_action_map_lookup_action)
   _WRAP_METHOD(Glib::RefPtr<const Action> lookup_action(const Glib::ustring& action_name) const, 
g_action_map_lookup_action, constversion)
 
-  //TODO: _WRAP_METHOD(void add_action_entries(const GActionEntry* entries, int n_entries, gpointer 
user_data), g_action_map_add_action_entries)
+  /** A Slot to be called when an action has been activated.
+   * See add_action().
+   *
+   * For instance,
+   * void on_slot_activated(const Glib::VariantBase& parameter);
+   */
+  typedef sigc::slot< void,const Glib::VariantBase& > ActivateSlot;
+
+  //This is our equivalent for g_action_map_add_action_entries().
+  /** A convenience method for creating a SimpleAction instance
+   * and adding it to the ActionMap.
+   *
+   * @param name The name of the Action.
+   * @param slot The callback method to be called when the action is activated.
+   * @return The Action.
+   */
+  Glib::RefPtr<SimpleAction> add_action(const Glib::ustring& name, const ActivateSlot& slot);
+  _IGNORE(g_action_map_add_action_entries)
 
   _WRAP_METHOD(void add_action(const Glib::RefPtr<Action>& action), g_action_map_add_action)
   _WRAP_METHOD(void remove_action(const Glib::ustring& action_name), g_action_map_remove_action)