jot: io_manager.H Source File

00001 #ifndef IO_MANAGER_H_IS_INCLUDED
00002 #define IO_MANAGER_H_IS_INCLUDED
00003 
00004 #include "disp/gel.H"
00005 
00006 /*****************************************************************
00007  * IOManager
00008  *****************************************************************/
00009 class IOManager : public SAVEobs, public LOADobs, public DATA_ITEM { 
00010  public:
00011    /******** MEMBER ENUMS ********/
00012    enum state_t {
00013       STATE_IDLE = 0,
00014       STATE_SCENE_LOAD,
00015       STATE_PARTIAL_LOAD,
00016       STATE_SCENE_SAVE,
00017       STATE_PARTIAL_SAVE
00018    };
00019 
00020    /******** CONSTRUCTOR/DESTRUCTOR ********/
00021    IOManager(); 
00022    virtual ~IOManager();
00023 
00024    /******** STATIC MEMBER METHODS ********/
00025    static void init() { instance(); }
00026 
00027    static IOManager*    instance() {
00028       if (!_instance)
00029          _instance = new IOManager;
00030       return _instance;
00031    }
00032 
00033    static state_t state()           { return instance()->state_(); }
00034    static str_ptr basename()        { return instance()->basename_(); }
00035    static str_ptr cwd()             { return instance()->cwd_(); }
00036    static str_ptr cached_prefix()   { return instance()->cached_prefix_(); }
00037    static str_ptr current_prefix()  { return instance()->current_prefix_(); }
00038    static str_ptr load_prefix()     { return instance()->load_prefix_(); }
00039    static str_ptr save_prefix()     { return instance()->save_prefix_(); }
00040 
00041    /******** LOADobs METHODS ********/
00042    virtual void notify_preload (NetStream &, load_status_t &, bool, bool); 
00043    virtual void notify_postload(NetStream &, load_status_t &, bool, bool); 
00044 
00045    /******** SAVEobs METHODS ********/
00046    virtual void notify_presave (NetStream &, save_status_t &, bool, bool); 
00047    virtual void notify_postsave(NetStream &, save_status_t &, bool, bool); 
00048 
00049    /******** DATA_ITEM METHODS ********/
00050    DEFINE_RTTI_METHODS_BASE("IOManager", CDATA_ITEM*);
00051    virtual DATA_ITEM*   dup() const      { return new IOManager; }
00052    virtual CTAGlist&    tags() const;
00053 
00054  protected:
00055    /******** MEMBER VARIABLES ********/
00056    ARRAY<state_t>       _state;
00057 
00058    str_ptr              _basename;
00059    str_ptr              _cached_cwd_plus_basename;
00060 
00061    str_ptr              _old_cwd;
00062    str_ptr              _old_basename;
00063 
00064    /******** STATIC MEMBER VARIABLES ********/
00065    static TAGlist*      _io_tags;
00066    static IOManager*    _instance;
00067 
00068    /******** INTERNAL MEMBER METHODS ********/
00069    bool split_filename(Cstr_ptr &, str_ptr &, str_ptr &, str_ptr &);
00070 
00071    /******** MEMBER METHODS FOR STATIC ACCESSORS********/
00072 
00073    state_t state_() const { assert(_state.num()>0); return _state.last(); }
00074    
00075    str_ptr basename_() { return _basename; }
00076    
00077    str_ptr cwd_();
00078 
00079    str_ptr cached_prefix_();
00080    str_ptr current_prefix_();
00081 
00082    str_ptr load_prefix_();
00083    str_ptr save_prefix_();
00084 
00085    /******** I/O Methods ********/
00086    virtual void get_basename(TAGformat &d);
00087    virtual void put_basename(TAGformat &d) const;
00088 };
00089 
00090 #endif // IO_MANAGER_H_IS_INCLUDED
00091 
00092 // end of file io_manager.H
00093