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/* ScummVM - Graphic Adventure Engine
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU 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
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-13-1/common/config-manager.h $
 * $Id: config-manager.h 33584 2008-08-03 16:54:18Z fingolfin $


#include "common/array.h"
//#include "common/config-file.h"
#include "common/hashmap.h"
#include "common/singleton.h"
#include "common/str.h"
#include "common/hash-str.h"

namespace Common {

class WriteStream;
class SeekableReadStream;

 * The (singleton) configuration manager, used to query & set configuration
 * values using string keys.
 * @todo Implement the callback based notification system (outlined below)
 *       which sends out notifications to interested parties whenever the value
 *       of some specific (or any) configuration key changes.
00049 class ConfigManager : public Singleton<ConfigManager> {


      class Domain : public StringMap {
            StringMap _keyValueComments;
            String _domainComment;

            const String &get(const String &key) const;

            void setDomainComment(const String &comment);
            const String &getDomainComment() const;

            void setKVComment(const String &key, const String &comment);
            const String &getKVComment(const String &key) const;
            bool hasKVComment(const String &key) const;

      typedef HashMap<String, Domain, IgnoreCase_Hash, IgnoreCase_EqualTo> DomainMap;

#if !(defined(PALMOS_ARM) || defined(PALMOS_DEBUG) || defined(__GP32__))
      /** The name of the application domain (normally 'scummvm'). */
00073       static const String kApplicationDomain;

      /** The transient (pseudo) domain. */
00076       static const String kTransientDomain;
      static const char *kApplicationDomain;
      static const char *kTransientDomain;

      const String _emptyString;

      void                    loadDefaultConfigFile();
      void                    loadConfigFile(const String &filename);

       * Retrieve the config domain with the given name.
       * @param domName the name of the domain to retrieve
       * @return pointer to the domain, or 0 if the domain doesn't exist.
      Domain *                getDomain(const String &domName);
      const Domain *          getDomain(const String &domName) const;

      // Generic access methods: No domain specified, use the values from the
      // various domains in the order of their priority.

      bool                    hasKey(const String &key) const;
      const String &          get(const String &key) const;
      void                    set(const String &key, const String &value);

#if 1
      // Domain specific access methods: Acces *one specific* domain and modify it.
      // TODO: I'd like to get rid of most of those if possible, or at least reduce
      // their usage, by using getDomain as often as possible. For example in the
      // options dialog code...

      bool                    hasKey(const String &key, const String &domName) const;
      const String &          get(const String &key, const String &domName) const;
      void                    set(const String &key, const String &value, const String &domName);

      void                    removeKey(const String &key, const String &domName);

      // Some additional convenience accessors.
      int                           getInt(const String &key, const String &domName = String::emptyString) const;
      bool                    getBool(const String &key, const String &domName = String::emptyString) const;
      void                    setInt(const String &key, int value, const String &domName = String::emptyString);
      void                    setBool(const String &key, bool value, const String &domName = String::emptyString);

      void                    registerDefault(const String &key, const String &value);
      void                    registerDefault(const String &key, const char *value);
      void                    registerDefault(const String &key, int value);
      void                    registerDefault(const String &key, bool value);

      void                    flushToDisk();

      void                    setActiveDomain(const String &domName);
      Domain *                getActiveDomain() { return _activeDomain; }
      const Domain *          getActiveDomain() const { return _activeDomain; }
      const String &          getActiveDomainName() const { return _activeDomainName; }

      void                    addGameDomain(const String &domName);
      void                    removeGameDomain(const String &domName);
      void                    renameGameDomain(const String &oldName, const String &newName);
      bool                    hasGameDomain(const String &domName) const;
      const DomainMap & getGameDomains() const { return _gameDomains; }

      friend class Singleton<SingletonBaseType>;

      void              loadFromStream(SeekableReadStream &stream);
      void              writeDomain(WriteStream &stream, const String &name, const Domain &domain);

      Domain                  _transientDomain;
      DomainMap         _gameDomains;
      Domain                  _appDomain;
      Domain                  _defaultsDomain;

      StringList        _domainSaveOrder;

      String                  _activeDomainName;
      Domain *          _activeDomain;

      String                  _filename;

}     // End of namespace Common

/** Shortcut for accessing the configuration manager. */
#define ConfMan         Common::ConfigManager::instance()


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