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/*
* Copyright (c) 2003-2009, John Wiegley. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of New Artisans LLC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @addtogroup util
*/
/**
* @file hooks.h
* @author John Wiegley
*
* @ingroup util
*
* @brief Brief
*
* Long.
*/
#ifndef _HOOKS_H
#define _HOOKS_H
/**
* @brief Brief
*
* Long.
*/
template <typename T, typename Data>
class hooks_t : public boost::noncopyable
{
public:
typedef boost::function<bool (Data&, bool)> function_t;
protected:
std::list<T *> list;
public:
hooks_t() {
TRACE_CTOR(hooks_t, "");
}
~hooks_t() throw() {
TRACE_DTOR(hooks_t);
}
void add_hook(T * func, const bool prepend = false) {
if (prepend)
list.push_front(func);
else
list.push_back(func);
}
void remove_hook(T * func) {
list.remove(func);
}
bool run_hooks(Data& item, bool post) {
foreach (T * func, list)
if (! (*func)(item, post))
return false;
return true;
}
};
#endif // _HOOKS_H
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