CWE-ou-minkata/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/PubUtilLib/plResMgr/plRegistryHelpers.h

/*==LICENSE==*

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*==LICENSE==*/
//////////////////////////////////////////////////////////////////////////////
//
//	plRegistryHelpers - Little helper classes for the registry and resManager
//
//// History /////////////////////////////////////////////////////////////////
//
//	3.25.2002 mcn	- Created
//
//////////////////////////////////////////////////////////////////////////////

#ifndef _plRegistryHelpers_h
#define _plRegistryHelpers_h

#include "hsTypes.h"
#include "../pnKeyedObject/plKey.h"
#include <set>

class plKey;
class plRegistryPageNode;

//// Little Iterator Class Defs //////////////////////////////////////////////

class plRegistryKeyIterator 
{
public:
	virtual ~plRegistryKeyIterator() {}
	virtual hsBool EatKey(const plKey& key) = 0;
};

class plRegistryPageIterator 
{
public:
	virtual ~plRegistryPageIterator() {}
	virtual hsBool EatPage(plRegistryPageNode* keyNode) = 0;
};


//// plKeyCollector //////////////////////////////////////////////////////////
//	Helper key iterator that collects keys into an std::set
class plKeyCollector : public plRegistryKeyIterator
{
protected:
	std::set<plKey>& fKeys;

public:
	plKeyCollector(std::set<plKey>& keys) : fKeys(keys) { }
	virtual hsBool EatKey(const plKey& key)
        {
            fKeys.insert(key);
            return true;
        }
};

// If you loaded keys with another iterator, this will ensure that they're unloaded
class plIndirectUnloadIterator : public plRegistryPageIterator, public plRegistryKeyIterator
{
public:
	plIndirectUnloadIterator() {}

	hsBool EatKey(const plKey& key) { return true; }

	hsBool EatPage(plRegistryPageNode* page);
};

#endif // _plRegistryHelpers_h