gtk2_ardour/gui_object.h

   1 /*
   2     Copyright (C) 2011 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #ifndef __gtk_ardour_gui_object_h__
  21 #define __gtk_ardour_gui_object_h__
  22
  23 #include <map>
  24 #include <string>
  25
  26 #include <boost/variant.hpp>
  27
  28 #include "pbd/xml++.h"
  29 #include "pbd/id.h"
  30
  31 class GUIObjectState {
  32   private:
  33         typedef boost::variant<int64_t,std::string> Variant;
  34         typedef std::map<std::string,Variant> PropertyMap;
  35         typedef std::map<std::string,PropertyMap> StringPropertyMap;
  36
  37   public:
  38         GUIObjectState() {}
  39         ~GUIObjectState();
  40
  41         XMLNode& get_state () const;
  42         int set_state (const XMLNode&);
  43
  44         static const std::string xml_node_name;
  45         void load (const XMLNode&);
  46
  47         GUIObjectState& operator= (const GUIObjectState& other);
  48
  49         std::string get_string (const std::string& id, const std::string& prop_name, bool* empty = 0);
  50
  51         template<typename T> void set (const std::string& id, const std::string& prop_name, const T& val) {
  52                 StringPropertyMap::iterator i = _property_maps.find (id);
  53
  54                 if (i != _property_maps.end()) {
  55                         i->second[prop_name] = val;
  56                 } else {
  57                         _property_maps[id] = PropertyMap();
  58                         _property_maps[id][prop_name] = val;
  59                 }
  60         }
  61   private:
  62         StringPropertyMap _property_maps;
  63
  64         void clear_maps ();
  65 };
  66
  67
  68 #endif /* __gtk_ardour_gui_object_h__ */