* Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
* Distributed under the terms of the MIT License.
*/
#ifndef LOCATABLE_ENTRY_H
#define LOCATABLE_ENTRY_H
#include <String.h>
#include <Referenceable.h>
#include <util/DoublyLinkedList.h>
#include <util/OpenHashTable.h>
enum locatable_entry_state {
LOCATABLE_ENTRY_UNLOCATED,
LOCATABLE_ENTRY_LOCATED_IMPLICITLY,
LOCATABLE_ENTRY_LOCATED_EXPLICITLY
};
class LocatableDirectory;
class LocatableEntry;
class LocatableEntryOwner {
public:
virtual ~LocatableEntryOwner();
virtual bool Lock() = 0;
virtual void Unlock() = 0;
virtual void LocatableEntryUnused(LocatableEntry* entry) = 0;
};
class LocatableEntry : public BReferenceable,
public DoublyLinkedListLinkImpl<LocatableEntry> {
public:
LocatableEntry(LocatableEntryOwner* owner,
LocatableDirectory* parent);
~LocatableEntry();
LocatableDirectory* Parent() const { return fParent; }
virtual const char* Name() const = 0;
locatable_entry_state State() const { return fState; }
virtual bool GetLocatedPath(BString& _path) const = 0;
virtual void SetLocatedPath(const BString& path,
bool implicit) = 0;
protected:
virtual void LastReferenceReleased();
protected:
LocatableEntryOwner* fOwner;
LocatableDirectory* fParent;
locatable_entry_state fState;
public:
LocatableEntry* fNext;
};
typedef DoublyLinkedList<LocatableEntry> LocatableEntryList;
#endif
