Fixed viewport issue when changing window size

[platform/core/uifw/dali-core.git] / dali / internal / event / events / actor-observer.h

diff --git a/dali/internal/event/events/actor-observer.h b/dali/internal/event/events/actor-observer.h
index 3cc8b19..9742b1f 100644 (file)
--- a/dali/internal/event/events/actor-observer.h
+++ b/dali/internal/event/events/actor-observer.h
@@ -1,8 +1,8 @@
-#ifndef __DALI_INTERNAL_ACTOR_OBSERVER_H__
-#define __DALI_INTERNAL_ACTOR_OBSERVER_H__
+#ifndef DALI_INTERNAL_ACTOR_OBSERVER_H
+#define DALI_INTERNAL_ACTOR_OBSERVER_H
 
 /*
- * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2019 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,6 +19,7 @@
  */
 
 // INTERNAL INCLUDES
+#include <dali/public-api/signals/callback.h>
 #include <dali/internal/event/common/object-impl.h>
 
 namespace Dali
@@ -44,6 +45,21 @@ public:
   ActorObserver();
 
   /**
+   * Constructor with a callback which is called when the observed actor is removed from the scene.
+   *
+   * The callback should have the following signature:
+   * @code
+   * void MyCallback( Actor* actor );
+   * @endcode
+   * Where actor is a pointer to the object that has been removed from the scene.
+   *
+   * @param[in]  callback  The callback to connect to.
+   *
+   * @note Ownership of callback is passed onto this class.
+   */
+  ActorObserver( CallbackBase* callback );
+
+  /**
    * Non virtual destructor
    */
   ~ActorObserver();
@@ -99,13 +115,14 @@ private:
   virtual void ObjectDestroyed(Object& object);
 
 private:
-  Actor* mActor;              ///< Raw pointer to an Actor.
-  bool  mActorDisconnected;   ///< Indicates whether the actor has been disconnected from the scene
+  Actor* mActor;                 ///< Raw pointer to an Actor.
+  bool  mActorDisconnected;      ///< Indicates whether the actor has been disconnected from the scene
+  CallbackBase* mRemoveCallback; ///< Callback to call when the observed actor is removed from the scene
 };
 
 } // namespace Internal
 
 } // namespace Dali
 
-#endif // __DALI_INTERNAL_ACTOR_OBSERVER_H__
+#endif // DALI_INTERNAL_ACTOR_OBSERVER_H