80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
/*
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Copyright (C) 2011 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(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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#ifndef __gtk_ardour_gui_object_h__
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#define __gtk_ardour_gui_object_h__
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#include <map>
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#include <string>
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#include <boost/variant.hpp>
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#include "pbd/xml++.h"
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#include "pbd/id.h"
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class GUIObjectState
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{
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public:
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GUIObjectState ();
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static const std::string xml_node_name;
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void load (const XMLNode&);
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int set_state (const XMLNode&);
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XMLNode& get_state () const;
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/** Get a string from our state.
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* @param id property of Object node to look for.
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* @param prop_name name of the Object property to return.
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* @param empty if non-0, filled in with true if the property is currently non-existant, otherwise false.
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* @return value of property `prop_name', or empty.
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*/
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std::string get_string (const std::string& id, const std::string& prop_name, bool* empty = 0);
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template<typename T> void set_property (const std::string& id, const std::string& prop_name, const T& val) {
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XMLNode* child = get_or_add_node (id);
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std::stringstream s;
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s << val;
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child->add_property (prop_name.c_str(), s.str());
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}
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/** Remove node with provided id.
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* @param id property of Object node to look for.
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*/
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void remove_node (const std::string& id);
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std::list<std::string> all_ids () const;
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XMLNode* get_or_add_node (const std::string &);
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static XMLNode* get_node (const XMLNode *, const std::string &);
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static XMLNode* get_or_add_node (XMLNode *, const std::string &);
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private:
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// no copy construction. object_map saves pointers to _state XMLNodes
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// use set_state(get_state())
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GUIObjectState (const GUIObjectState& other);
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XMLNode _state;
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// ideally we'd use a O(1) hash table here,
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// but O(log(N)) is fine already.
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std::map <std::string, XMLNode*> object_map;
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};
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#endif /* __gtk_ardour_gui_object_h__ */
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