// Resource.hh // Copyright (c) 2002-2003 Henrik Kinnunen (fluxgen(at)users.sourceforge.net) // // Permission is hereby granted, free of charge, to any person obtaining a // copy of this software and associated documentation files (the "Software"), // to deal in the Software without restriction, including without limitation // the rights to use, copy, modify, merge, publish, distribute, sublicense, // and/or sell copies of the Software, and to permit persons to whom the // Software is furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER // DEALINGS IN THE SOFTWARE. // $Id: Resource.hh,v 1.1 2003/05/18 22:06:59 fluxgen Exp $ #ifndef FBTK_RESOURCE_HH #define FBTK_RESOURCE_HH #include "NotCopyable.hh" #include <string> #include <list> namespace FbTk { /// Base class for resources, this is only used in ResourceManager class Resource_base:private FbTk::NotCopyable { public: virtual ~Resource_base() { }; /// set from string value virtual void setFromString(char const *strval) = 0; /// set default value virtual void setDefaultValue() = 0; /// get string value virtual std::string getString() = 0; /// get alternative name of this resource inline const std::string& altName() const { return m_altname; } /// get name of this resource inline const std::string& name() const { return m_name; } protected: Resource_base(const std::string &name, const std::string &altname): m_name(name), m_altname(altname) { } private: std::string m_name; ///< name of this resource std::string m_altname; ///< alternative name }; template <typename T> class Resource; class ResourceManager { public: typedef std::list<Resource_base *> ResourceList; ResourceManager() { } virtual ~ResourceManager() {} /// Load all resources registered to this class /// @return true on success virtual bool load(const char *filename); /// Save all resouces registered to this class /// @return true on success virtual bool save(const char *filename, const char *mergefilename=0); /// Add resource to list, only used in Resource<T> template <class T> void addResource(Resource<T> &r) { m_resourcelist.push_back(&r); m_resourcelist.unique(); } /// Remove a specific resource, only used in Resource<T> template <class T> void removeResource(Resource<T> &r) { m_resourcelist.remove(&r); } protected: static void ensureXrmIsInitialize(); private: static bool m_init; ResourceList m_resourcelist; }; /// Real resource class /** * usage: Resource<int> someresource(resourcemanager, 10, "someresourcename", "somealternativename"); \n * and then implement setFromString and getString \n * example: \n * template <> \n * void Resource<int>::setFromString(const char *str) { \n * *(*this) = atoi(str); \n * } */ template <typename T> class Resource:public Resource_base { public: Resource(ResourceManager &rm, T val, const std::string &name, const std::string &altname): Resource_base(name, altname), m_value(val), m_defaultval(val), m_rm(rm) { m_rm.addResource(*this); // add this to resource handler } virtual ~Resource() { m_rm.removeResource(*this); // remove this from resource handler } inline void setDefaultValue() { m_value = m_defaultval; } /// sets resource from string, specialized, must be implemented void setFromString(const char *strval); inline Resource<T>& operator = (const T& newvalue) { m_value = newvalue; return *this;} /// specialized, must be implemented /// @return string value of resource std::string getString(); inline T& operator*() { return m_value; } inline const T& operator*() const { return m_value; } inline T *operator->() { return &m_value; } inline const T *operator->() const { return &m_value; } private: T m_value, m_defaultval; ResourceManager &m_rm; }; }; // end namespace FbTk #endif // FBTK_RESOURCE_HH