97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
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/*
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APPSTATE.hpp - application initialisation and behaviour
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Copyright (C) Lumiera.org
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2008, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/** @file appstate.hpp
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** Registering and managing some application-global services.
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** Besides encapsulating the logic for starting up the fundamental parts
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** of the application, there is a mechanism for registering and firing off
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** application lifecycle event callbacks.
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**
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** @see LifecycleHook
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** @see main.cpp
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** @see nobugcfg.h
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*/
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#ifndef LUMIERA_APPSTATE_H
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#define LUMIERA_APPSTATE_H
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#include "include/symbol.hpp"
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#include <boost/noncopyable.hpp>
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#include <boost/scoped_ptr.hpp>
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#include <string>
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#include <map>
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namespace lumiera {
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using std::string;
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using boost::scoped_ptr;
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using boost::noncopyable;
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class LifecycleRegistry;
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/**
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* Singleton to hold global flags directing the overall application behaviour,
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* for triggering lifecycle events and performing early initialisation tasks.
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* AppState services are available already from static initialisation code.
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* @warning don't use AppState in destructors.
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*/
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class AppState
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: private noncopyable
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{
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private:
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AppState ();
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~AppState (); ///< deletion prohibited
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friend void boost::checked_delete<AppState>(AppState*);
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public:
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/** get the (single) AppState instance.
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* @warning don't use it after the end of main()! */
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static AppState& instance();
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/** fire off all lifecycle callbacks
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* registered under the given label */
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static void lifecycle (Symbol eventLabel);
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private:
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typedef scoped_ptr<LifecycleRegistry> PLife;
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PLife lifecycleHooks_;
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friend class LifecycleHook;
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};
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} // namespace lumiera
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#endif
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