DocFormats/core/src/lib/DFCallback.h

// Licensed to the Apache Software Foundation (ASF) under one
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// distributed with this work for additional information
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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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#pragma once

typedef void (*DFCallbackFunction)(void *ctx, void *object, void *data);

typedef struct DFCallback DFCallback;

struct DFCallback {
    DFCallbackFunction fun;
    void *ctx;
    DFCallback *next;
};

void DFCallbackAdd(DFCallback **list, DFCallbackFunction fun, void *ctx);
void DFCallbackRemove(DFCallback **list, DFCallbackFunction fun, void *ctx);
void DFCallbackInvoke(DFCallback *list, void *object, void *data);