Aegisub/aegisub/src/factory_manager.h
2011-11-07 06:18:34 +00:00

145 lines
4.4 KiB
C++

// Copyright (c) 2010, Thomas Goyne <plorkyeran@aegisub.org>
// 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 the Aegisub Group 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.
//
// Aegisub Project http://www.aegisub.org/
//
// $Id$
/// @file factory_manager.h
/// @brief Template/base-class for factory classes
/// @ingroup utility
///
#pragma once
#ifndef AGI_PRE
#include <algorithm>
#include <cctype>
#include <map>
#include <vector>
#include <wx/string.h>
#endif
template <class func>
class FactoryBase {
protected:
typedef std::map<std::string, std::pair<bool, func> > map;
typedef typename map::iterator iterator;
static map *classes;
static void DoRegister(func function, std::string name, bool hide, std::vector<std::string> &subtypes) {
if (!classes) classes = new map;
if (subtypes.empty()) {
classes->insert(std::make_pair(name, std::make_pair(hide, function)));
}
else {
for (size_t i = 0; i < subtypes.size(); i++) {
classes->insert(std::make_pair(name + '/' + subtypes[i], std::make_pair(hide, function)));
}
}
}
static func Find(std::string name) {
if (!classes) return NULL;
iterator factory = classes->find(name);
if (factory != classes->end()) return factory->second.second;
return NULL;
}
public:
static void Clear() {
delete classes;
}
static std::vector<std::string> GetClasses(std::string favourite="") {
std::vector<std::string> list;
if (!classes) return list;
std::string cmp;
std::transform(favourite.begin(), favourite.end(), favourite.begin(), ::tolower);
for (iterator cur=classes->begin();cur!=classes->end();cur++) {
cmp.clear();
std::transform(cur->first.begin(), cur->first.end(), std::back_inserter(cmp), ::tolower);
if (cmp == favourite) list.insert(list.begin(), cur->first);
else if (!cur->second.first) list.push_back(cur->first);
}
return list;
}
virtual ~FactoryBase() {
delete classes;
}
};
template<class Base>
class Factory0 : public FactoryBase<Base *(*)()> {
typedef Base *(*func)();
template<class T>
static Base* create() {
return new T;
}
public:
static Base* Create(std::string name) {
func factory = FactoryBase<func>::Find(name);
if (factory) {
return factory();
}
else {
return NULL;
}
}
template<class T>
static void Register(std::string name, bool hide = false, std::vector<std::string> subTypes = std::vector<std::string>()) {
FactoryBase<func>::DoRegister(&Factory0<Base>::template create<T>, name, hide, subTypes);
}
};
template<class Base, class Arg1>
class Factory1 : public FactoryBase<Base *(*)(Arg1)> {
typedef Base *(*func)(Arg1);
template<class T>
static Base* create(Arg1 a1) {
return new T(a1);
}
public:
static Base* Create(std::string name, Arg1 a1) {
func factory = FactoryBase<func>::Find(name);
if (factory) {
return factory(a1);
}
else {
return NULL;
}
}
template<class T>
static void Register(std::string name, bool hide = false, std::vector<std::string> subTypes = std::vector<std::string>()) {
FactoryBase<func>::DoRegister(&Factory1<Base, Arg1>::template create<T>, name, hide, subTypes);
}
};