[ekiga/ds-gtk-application] Actor: Added removed/added signals + method to remove an action.

[Damien Sandras <dsandras src gnome org>]

commit bb9e539edec3404fcb6b0d4e7239b0b033f83eac
Author: Damien Sandras <dsandras beip be>
Date:   Sun Mar 16 17:47:37 2014 +0100

    Actor: Added removed/added signals + method to remove an action.
    
    This allows actions to be dynamically added and removed.

 lib/engine/framework/actor.cpp |   12 ++++++++++++
 lib/engine/framework/actor.h   |   16 +++++++++++++++-
 2 files changed, 27 insertions(+), 1 deletions(-)
---
diff --git a/lib/engine/framework/actor.cpp b/lib/engine/framework/actor.cpp
index 4b1af8e..6e8d9fd 100644
--- a/lib/engine/framework/actor.cpp
+++ b/lib/engine/framework/actor.cpp
@@ -44,4 +44,16 @@ void
 Actor::add_action (ActionPtr action)
 {
   actions.insert (std::make_pair (action->get_name (), action));
+  action_added (action->get_name ());
+}
+
+
+bool
+Actor::remove_action (const std::string & name)
+{
+  bool success = (actions.erase (name) > 0);
+  if (success)
+    action_removed (name);
+
+  return success;
 }
diff --git a/lib/engine/framework/actor.h b/lib/engine/framework/actor.h
index 3a21d3b..8009710 100644
--- a/lib/engine/framework/actor.h
+++ b/lib/engine/framework/actor.h
@@ -38,6 +38,8 @@
 #ifndef __ACTOR_H__
 #define __ACTOR_H__
 
+#include <string>
+
 #include "action.h"
 
 namespace Ekiga {
@@ -60,7 +62,6 @@ namespace Ekiga {
 
   public:
 
-
     /** Register an action on the given Actor.
      *
      * Actions that are not "added" using this method will not be usable
@@ -71,12 +72,25 @@ namespace Ekiga {
     void add_action (ActionPtr action);
 
 
+    /** Remove an action on the given Actor.
+     *
+     * @param An Action name.
+     * @return True if the action has been removed, false otherwise.
+     */
+    bool remove_action (const std::string & name);
+
+
   protected:
 
     /** This method must be called by each Actor to register Actions.
      */
     virtual void register_actions () = 0;
 
+    /** Those signals are emitted when the ActionMap is updated.
+     */
+    boost::signals2::signal<void(const std::string &)> action_added;
+    boost::signals2::signal<void(const std::string &)> action_removed;
+
     ActionMap actions;
   };