text: /*
  -----------------------------------------------------------------------------
  This source file is part of OGRE
  (Object-oriented Graphics Rendering Engine)
  For the latest info, see http://ogre.sourceforge.net/
  
  Copyright (c) 2000-2005 The OGRE Team
  Also see acknowledgements in Readme.html
  
  This program is free software; you can redistribute it and/or modify it under
  the terms of the GNU Lesser General Public License as published by the Free Software
  Foundation; either version 2 of the License, or (at your option) any later
  version.
  
  This program is distributed in the hope that it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
  
  You should have received a copy of the GNU Lesser General Public License along with
  this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  Place - Suite 330, Boston, MA 02111-1307, USA, or go to
  http://www.gnu.org/copyleft/lesser.txt.
  -----------------------------------------------------------------------------
  */
  // Ogre includes
  #include "OgreStableHeaders.h"
  
  #include "OgreResource.h"
  #include "OgreResourceManager.h"
  #include "OgreLogManager.h"
  
  namespace Ogre 
  {
  	//-----------------------------------------------------------------------
  	Resource::Resource(ResourceManager* creator, const String& name, ResourceHandle handle,
  		const String& group, bool isManual, ManualResourceLoader* loader)
  		: mCreator(creator), mName(name), mGroup(group), mHandle(handle), 
  		mIsLoaded(false), mSize(0), mIsManual(isManual), mLoader(loader)
  	{
  	}
  	//-----------------------------------------------------------------------
  	Resource::~Resource() 
  	{ 
  	}
  	//-----------------------------------------------------------------------
  	void Resource::load(void)
  	{
  		OGRE_LOCK_AUTO_MUTEX
  		if (!mIsLoaded)
  		{
  			if (mIsManual)
  			{
  				// Load from manual loader
  				if (mLoader)
  				{
  					mLoader->loadResource(this);
  				}
  				else
  				{
  					// Warn that this resource is not reloadable
  					LogManager::getSingleton().logMessage(
  						"WARNING: " + mCreator->getResourceType() + 
  						" instance '" + mName + "' was defined as manually "
  						"loaded, but no manual loader was provided. This Resource "
  						"will be lost if it has to be reloaded.");
  				}
  			}
  			else
  			{
  				if (mGroup == ResourceGroupManager::AUTODETECT_RESOURCE_GROUP_NAME)
  				{
  					// Derive resource group
  					changeGroupOwnership(
  						ResourceGroupManager::getSingleton()
  							.findGroupContainingResource(mName));
  				}
  				loadImpl();
  			}
  			// Calculate resource size
  			mSize = calculateSize();
  			// Now loaded
  			mIsLoaded = true;
  			// Notify manager
  			if(mCreator)
  				mCreator->_notifyResourceLoaded(this);
  		}
  
  	}
  	//-----------------------------------------------------------------------
  	void Resource::changeGroupOwnership(const String& newGroup)
  	{
  		if (mGroup != newGroup)
  		{
  			String oldGroup = mGroup;
  			mGroup = newGroup;
  			ResourceGroupManager::getSingleton()
  				._notifyResourceGroupChanged(oldGroup, this);
  		}
  	}
  	//-----------------------------------------------------------------------
  	void Resource::unload(void) 
  	{ 
  		OGRE_LOCK_AUTO_MUTEX
  		if (mIsLoaded)
  		{
  			unloadImpl();
  			mIsLoaded = false;
  			// Notify manager
  			if(mCreator)
  				mCreator->_notifyResourceUnloaded(this);
  		}
  	}
  	//-----------------------------------------------------------------------
  	void Resource::reload(void) 
  	{ 
  		OGRE_LOCK_AUTO_MUTEX
  		if (mIsLoaded)
  		{
  			unload();
  			load();
  		}
  	}
  	//-----------------------------------------------------------------------
  	void Resource::touch(void) 
  	{
  		OGRE_LOCK_AUTO_MUTEX
          // make sure loaded
          load();
  
  		if(mCreator)
  			mCreator->_notifyResourceTouched(this);
  	}
  	//-----------------------------------------------------------------------
  
  
  }
  