Adding Baseframework of the ResourceManager (all hooks and observers) are being put in place with a…

athena/activity/activity_manager_impl.cc

Index: athena/activity/activity_manager_impl.cc
diff --git a/athena/activity/activity_manager_impl.cc b/athena/activity/activity_manager_impl.cc
index 32db67203413b582d056457eff74274cddd5922b..825ca90edabb8906977c87a4d4f00cacb80e7e14 100644
--- a/athena/activity/activity_manager_impl.cc
+++ b/athena/activity/activity_manager_impl.cc
@@ -8,11 +8,15 @@
 #include <vector>
 
 #include "athena/activity/public/activity.h"
+#include "athena/activity/public/activity_manager_observer.h"
 #include "athena/activity/public/activity_view_manager.h"
 #include "base/logging.h"
+#include "base/observer_list.h"
 
 namespace athena {
 
+class ActivityManagerObserver;
+
 namespace {
 
 ActivityManager* instance = NULL;
@@ -39,12 +43,18 @@ class ActivityManagerImpl : public ActivityManager {
     activities_.push_back(activity);
     ActivityViewManager* manager = ActivityViewManager::Get();
     manager->AddActivity(activity);
+    FOR_EACH_OBSERVER(ActivityManagerObserver,
+                      observers_,
+                      OnActivityStarted(activity));
   }
 
   virtual void RemoveActivity(Activity* activity) OVERRIDE {
     std::vector<Activity*>::iterator find = std::find(activities_.begin(),
                                                       activities_.end(),
                                                       activity);
+    FOR_EACH_OBSERVER(ActivityManagerObserver,
+                      observers_,
+                      OnActivityEnding(activity));
     if (find != activities_.end()) {
       activities_.erase(find);
 
@@ -58,8 +68,17 @@ class ActivityManagerImpl : public ActivityManager {
     manager->UpdateActivity(activity);
   }
 
+  virtual void AddObserver(ActivityManagerObserver* observer) OVERRIDE {
+    observers_.AddObserver(observer);
+  }
+
+  virtual void RemoveObserver(ActivityManagerObserver* observer) OVERRIDE {
+    observers_.RemoveObserver(observer);
+  }
+
  private:
   std::vector<Activity*> activities_;
+  ObserverList<ActivityManagerObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(ActivityManagerImpl);
 };