//------------------------------------------------------------------------------
//      Copyright (c) 2001-2002, Haiku
//
//      Permission is hereby granted, free of charge, to any person obtaining a
//      copy of this software and associated documentation files (the "Software"),
//      to deal in the Software without restriction, including without limitation
//      the rights to use, copy, modify, merge, publish, distribute, sublicense,
//      and/or sell copies of the Software, and to permit persons to whom the
//      Software is furnished to do so, subject to the following conditions:
//
//      The above copyright notice and this permission notice shall be included in
//      all copies or substantial portions of the Software.
//
//      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//      IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//      FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//      AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//      LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
//      FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
//      DEALINGS IN THE SOFTWARE.
//
//      File Name:              MessageRunnerManager.h
//      Author:                 Ingo Weinhold (bonefish@users.sf.net)
//      Description:    Manages the registrar side "shadows" of BMessageRunners.
//------------------------------------------------------------------------------

#ifndef MESSAGE_RUNNER_MANAGER_H
#define MESSAGE_RUNNER_MANAGER_H

#include <List.h>
#include <Locker.h>

class BMessage;
class EventQueue;

class MessageRunnerManager {
public:
        MessageRunnerManager(EventQueue *eventQueue);
        virtual ~MessageRunnerManager();

        void HandleRegisterRunner(BMessage *request);
        void HandleUnregisterRunner(BMessage *request);
        void HandleSetRunnerParams(BMessage *request);
        void HandleGetRunnerInfo(BMessage *request);

        bool Lock();
        void Unlock();

private:
        class RunnerEvent;
        struct RunnerInfo;
        friend class RunnerEvent;

private:
        bool _AddInfo(RunnerInfo *info);
        bool _RemoveInfo(RunnerInfo *info);
        RunnerInfo *_RemoveInfo(int32 index);
        RunnerInfo *_RemoveInfoWithToken(int32 token);
        bool _DeleteInfo(RunnerInfo *info, bool eventRemoved);

        int32 _CountInfos() const;

        RunnerInfo *_InfoAt(int32 index) const;
        RunnerInfo *_InfoForToken(int32 token) const;

        bool _HasInfo(RunnerInfo *info) const;

        int32 _IndexOf(RunnerInfo *info) const;
        int32 _IndexOfToken(int32 token) const;

        bool _DoEvent(RunnerInfo *info);
        bool _ScheduleEvent(RunnerInfo *info);

        int32 _NextToken();

private:
        BList           fRunnerInfos;
        BLocker         fLock;
        EventQueue      *fEventQueue;
        int32           fNextToken;
};

#endif  // MESSAGE_RUNNER_MANAGER_H