From ad290a18f456ade9654a5a9425132dab5d0f64f9 Mon Sep 17 00:00:00 2001
From: Lynix <lynix680@gmail.com>
Date: Thu, 23 Apr 2015 14:26:48 +0200
Subject: [PATCH] Ndk/Components: Added On[Attached|Detached] events

Former-commit-id: 46e5b5720a8496dfe536181918ae0a995e028fc1
---
 SDK/include/NDK/BaseComponent.hpp |  2 ++
 SDK/include/NDK/BaseComponent.inl | 10 +++++++++-
 SDK/src/NDK/BaseComponent.cpp     |  8 ++++++++
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/SDK/include/NDK/BaseComponent.hpp b/SDK/include/NDK/BaseComponent.hpp
index fc1e88058..4e9b53328 100644
--- a/SDK/include/NDK/BaseComponent.hpp
+++ b/SDK/include/NDK/BaseComponent.hpp
@@ -43,8 +43,10 @@ namespace Ndk
 			static ComponentIndex RegisterComponent(ComponentId id, Factory factoryFunc);
 
 		private:
+			virtual void OnAttached();
 			virtual void OnComponentAttached(BaseComponent& component);
 			virtual void OnComponentDetached(BaseComponent& component);
+			virtual void OnDetached();
 			void SetEntity(Entity* entity);
 
 			static bool Initialize();
diff --git a/SDK/include/NDK/BaseComponent.inl b/SDK/include/NDK/BaseComponent.inl
index 290a5de2d..b8637b457 100644
--- a/SDK/include/NDK/BaseComponent.inl
+++ b/SDK/include/NDK/BaseComponent.inl
@@ -38,7 +38,15 @@ namespace Ndk
 
 	inline void BaseComponent::SetEntity(Entity* entity)
 	{
-		m_entity = entity;
+		if (m_entity != entity)
+		{
+			if (m_entity)
+				OnDetached();
+
+			m_entity = entity;
+			if (m_entity)
+				OnAttached();
+		}
 	}
 
 	inline bool BaseComponent::Initialize()
diff --git a/SDK/src/NDK/BaseComponent.cpp b/SDK/src/NDK/BaseComponent.cpp
index 6a54563df..1a0b85168 100644
--- a/SDK/src/NDK/BaseComponent.cpp
+++ b/SDK/src/NDK/BaseComponent.cpp
@@ -8,6 +8,10 @@ namespace Ndk
 {
 	BaseComponent::~BaseComponent() = default;
 
+	void BaseComponent::OnAttached()
+	{
+	}
+
 	void BaseComponent::OnComponentAttached(BaseComponent& component)
 	{
 		NazaraUnused(component);
@@ -18,6 +22,10 @@ namespace Ndk
 		NazaraUnused(component);
 	}
 
+	void BaseComponent::OnDetached()
+	{
+	}
+
 	std::vector<BaseComponent::ComponentEntry> BaseComponent::s_entries;
 	std::unordered_map<ComponentId, ComponentIndex> BaseComponent::s_idToIndex;
 }