Added the trunk/branches/tags directories at repository root, and moved previous root into trunk/

git-svn-id: https://sfml.svn.sourceforge.net/svnroot/sfml/trunk@1002 4e206d99-4929-0410-ac5d-dfc041789085

include/SFML/System/ResourcePtr.inl

@@ -0,0 +1,149 @@
+////////////////////////////////////////////////////////////
+//
+// SFML - Simple and Fast Multimedia Library
+// Copyright (C) 2007 Laurent Gomila (laurent.gom@gmail.com)
+//
+// This software is provided 'as-is', without any express or implied warranty.
+// In no event will the authors be held liable for any damages arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it freely,
+// subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented;
+//    you must not claim that you wrote the original software.
+//    If you use this software in a product, an acknowledgment
+//    in the product documentation would be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such,
+//    and must not be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source distribution.
+//
+////////////////////////////////////////////////////////////
+
+
+////////////////////////////////////////////////////////////
+/// Default constructor
+////////////////////////////////////////////////////////////
+template <typename T>
+ResourcePtr<T>::ResourcePtr() :
+myResource(NULL)
+{
+
+}
+
+
+////////////////////////////////////////////////////////////
+/// Construct from a raw resource
+////////////////////////////////////////////////////////////
+template <typename T>
+ResourcePtr<T>::ResourcePtr(const T* Resource) :
+myResource(Resource)
+{
+    if (myResource)
+        myResource->Connect(*this);
+}
+
+
+////////////////////////////////////////////////////////////
+/// Copy constructor
+////////////////////////////////////////////////////////////
+template <typename T>
+ResourcePtr<T>::ResourcePtr(const ResourcePtr<T>& Copy) :
+myResource(Copy.myResource)
+{
+    if (myResource)
+        myResource->Connect(*this);
+}
+
+
+////////////////////////////////////////////////////////////
+/// Destructor
+////////////////////////////////////////////////////////////
+template <typename T>
+ResourcePtr<T>::~ResourcePtr()
+{
+    if (myResource)
+        myResource->Disconnect(*this);
+}
+
+
+////////////////////////////////////////////////////////////
+/// Assignment operator from another ResourcePtr
+////////////////////////////////////////////////////////////
+template <typename T>
+ResourcePtr<T>& ResourcePtr<T>::operator =(const ResourcePtr<T>& Other)
+{
+    if (myResource)
+        myResource->Disconnect(*this);
+
+    myResource = Other.myResource;
+
+    if (myResource)
+        myResource->Connect(*this);
+
+    return *this;
+}
+
+
+////////////////////////////////////////////////////////////
+/// Assignment operator from a raw resource
+////////////////////////////////////////////////////////////
+template <typename T>
+ResourcePtr<T>& ResourcePtr<T>::operator =(const T* Resource)
+{
+    if (myResource)
+        myResource->Disconnect(*this);
+
+    myResource = Resource;
+
+    if (myResource)
+        myResource->Connect(*this);
+
+    return *this;
+}
+
+
+////////////////////////////////////////////////////////////
+/// Cast operator to implicitely convert the resource pointer to
+/// its raw pointer type.
+/// This might be dangerous in the general case, but in this context
+/// it is safe enough to define this operator
+////////////////////////////////////////////////////////////
+template <typename T>
+ResourcePtr<T>::operator const T*() const
+{
+    return myResource;
+}
+
+
+////////////////////////////////////////////////////////////
+/// Operator * overload to return a reference to the actual resource
+////////////////////////////////////////////////////////////
+template <typename T>
+const T& ResourcePtr<T>::operator *() const
+{
+    return *myResource;
+}
+
+
+////////////////////////////////////////////////////////////
+/// Operator -> overload to return a pointer to the actual resource
+////////////////////////////////////////////////////////////
+template <typename T>
+const T* ResourcePtr<T>::operator ->() const
+{
+    return myResource;
+}
+
+
+////////////////////////////////////////////////////////////
+/// Function called when the observed resource is about to be
+/// destroyed
+////////////////////////////////////////////////////////////
+template <typename T>
+void ResourcePtr<T>::OnResourceDestroyed()
+{
+    myResource = NULL;
+}