Application.h

/*
 * Copyright (C) 2006-2008 Marc Boris Duerner
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * As a special exception, you may use this file as part of a free
 * software library without restriction. Specifically, if other files
 * instantiate templates or use macros or inline functions from this
 * file, or you compile this file and link it with other files to
 * produce an executable, this file does not by itself cause the
 * resulting executable to be covered by the GNU General Public
 * License. This exception does not however invalidate any other
 * reasons why the executable file might be covered by the GNU Library
 * General Public License.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
#ifndef PT_SYSTEM_APPLICATION_H
#define PT_SYSTEM_APPLICATION_H
 
#include <Pt/System/Api.h>
#include <Pt/System/MainLoop.h>
#include <Pt/Arg.h>
#include <Pt/Signal.h>
#include <Pt/Connectable.h>
 
namespace Pt {
 
namespace System {
 
class ApplicationImpl;
 
class PT_SYSTEM_API Application : public Pt::Connectable
{
    public:
        Application();
 
        explicit Application(int& argc, char** argv = 0);
 
        explicit Application(EventLoop* loop);
 
        Application(EventLoop* loop, int& argc, char** argv = 0);
 
        ~Application();
 
        static Application& instance();
 
        EventLoop& loop()
        { return *_loop; }
 
        void run()
        { _loop->run(); }
 
        void exit()
        { _loop->exit(); }
 
        bool ignoreSystemSignal(int sig);
 
        bool catchSystemSignal(int sig);
 
        bool raiseSystemSignal(int sig);
 
        Signal<int>& systemSignal()
        { return _systemSignal; }
 
        int& argc() const
        { return *_argc; }
 
        char** argv() const
        { return _argv; }
 
          void setArgs(int& argc, char** argv);
 
        template <typename T>
        Arg<T> getArg(const char* name)
        {
            return Arg<T>(*_argc, _argv, name);
        }
 
        template <typename T>
        Arg<T> getArg(const char* name, const T& def)
        {
            return Arg<T>(*_argc, _argv, name, def);
        }
 
        template <typename T>
        Arg<T> getArg(const char name)
        {
            return Arg<T>(*_argc, _argv, name);
        }
 
        template <typename T>
        Arg<T> getArg(const char name, const T& def)
        {
            return Arg<T>(*_argc, _argv, name, def);
        }
 
    public:
        static void chdir(const Path& path);
 
        static Path cwd();
 
        static Path rootdir();
 
        static Path tmpdir();
 
        static void setEnvVar(const std::string& name, const std::string& value);
 
        static void unsetEnvVar(const std::string& name);
 
        static std::string getEnvVar(const std::string& name);
 
        static unsigned long usedMemory();
 
        ApplicationImpl& impl()
        { return *_impl; }
 
    protected:
        void init(EventLoop& loop);
 
    private:
        int     _noArgs;
        int*    _argc;
        char**  _argv;
        ApplicationImpl* _impl;
        EventLoop* _loop;
        MainLoop* _owner;
        Signal<int> _systemSignal;
};
 
} // namespace System
 
} // namespace Pt
 
#endif // PT_SYSTEM_APPLICATION_H