TokenSource.h

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/*
 * Copyright (c) 2005 Palmsource, Inc.
 * 
 * This software is licensed as described in the file LICENSE, which
 * you should have received as part of this distribution. The terms
 * are also available at http://www.openbinder.org/license.html.
 * 
 * This software consists of voluntary contributions made by many
 * individuals. For the exact contribution history, see the revision
 * history and logs, available at http://www.openbinder.org
 */
 
#ifndef _TOKEN_SOURCE_H
#define _TOKEN_SOURCE_H

#include <support/Autolock.h>
#include <support/Handler.h>
#include <support/IIterable.h>
#include <support/Node.h>
#include <support/Package.h>

#if _SUPPORTS_NAMESPACE
namespace palmos {
namespace support {
#endif



class BTokenSource : public BnNode, public BnIterable, private BHandler
{
public:
                        BTokenSource(const SContext& context, const SValue& args);
    virtual             ~BTokenSource();

    virtual void        InitAtom();
    virtual SValue      Inspect(const sptr<IBinder>& caller, const SValue &which, uint32_t flags = 0);
    
    virtual sptr<INode> Attributes() const;
    virtual SString MimeType() const;
    virtual void SetMimeType(const SString& value);
    virtual nsecs_t CreationDate() const;
    virtual void SetCreationDate(nsecs_t value);
    virtual nsecs_t ModifiedDate() const;
    virtual void SetModifiedDate(nsecs_t value);    
    virtual status_t Walk(SString* path, uint32_t flags, SValue* node);

    virtual sptr<IIterator> NewIterator(const SValue& args, status_t* error);

    // BHandler
    virtual status_t    HandleMessage(const SMessage& msg);

                        // returns the token.  The same as accessing it through
                        // the "token" catalog entry.
            SValue      GetToken();

protected:
    // Disambiguate.
    const SContext& Context() const;
    
private:
    class Token : public BBinder
    {
    public:
        Token(const sptr<BTokenSource> &source);
        virtual ~Token();
    private:
        sptr<BTokenSource> m_source;
    };

    friend class Token;

    void token_done();

    SLocker m_lock;
    SValue m_acquiredAction;
    SValue m_releasedAction;
    wptr<Token> m_token;
};

#if _SUPPORTS_NAMESPACE
} }
#endif

#endif // _TOKEN_SOURCE_H

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