/*
 * Copyright 2002-2006, Haiku, Inc. All Rights Reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *              Michael Wilber
 *              Axel Dörfler, axeld@pinc-software.de
 */
#ifndef _FUNC_TRANSLATOR_H
#define _FUNC_TRANSLATOR_H


#include <Translator.h>


// Structure used to hold the collection of function pointers and 
// public variables exported by function based translator add-ons.
struct translator_data {
        const char*     name;
        const char*     info;
        int32           version;
        const translation_format* input_formats;
        const translation_format* output_formats;

        status_t        (*identify_hook)(BPositionIO* source, const translation_format* format,
                                        BMessage* ioExtension, translator_info* outInfo, uint32 outType);

        status_t        (*translate_hook)(BPositionIO* source, const translator_info* info,
                                        BMessage* ioExtension, uint32 outType, BPositionIO* destination);

        status_t        (*make_config_hook)(BMessage* ioExtension, BView** _view, BRect* _extent);
        status_t        (*get_config_message_hook)(BMessage* ioExtension);
};

namespace BPrivate {

class BFuncTranslator : public BTranslator {
        public:
                BFuncTranslator(const translator_data& data);

                virtual const char *TranslatorName() const;
                virtual const char *TranslatorInfo() const;
                virtual int32 TranslatorVersion() const;

                virtual const translation_format *InputFormats(int32 *out_count) const;
                virtual const translation_format *OutputFormats(int32 *out_count) const;

                virtual status_t Identify(BPositionIO *inSource, 
                        const translation_format *inFormat, BMessage *ioExtension,
                        translator_info *outInfo, uint32 outType);
                virtual status_t Translate(BPositionIO *inSource,
                        const translator_info *inInfo, BMessage *ioExtension, uint32 outType,
                        BPositionIO * outDestination);
                virtual status_t MakeConfigurationView(BMessage *ioExtension,
                        BView **outView, BRect *outExtent);
                virtual status_t GetConfigurationMessage(BMessage *ioExtension);

        protected:
                virtual ~BFuncTranslator();
                        // This object is deleted by calling Release(),
                        // it can not be deleted directly. See BTranslator in the Be Book

        private:
                translator_data fData;
};

}       // namespace BPrivate

#endif // _FUNC_TRANSLATOR_H