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/*
* Copyright (C) 2011-2012 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2011-2015 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2015-2016 Robin Gareus <robin@gareus.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __gtk_ardour_gui_object_h__
#define __gtk_ardour_gui_object_h__
#include <map>
#include <string>
#include "pbd/xml++.h"
#include "pbd/id.h"
class GUIObjectState
{
public:
GUIObjectState ();
static const std::string xml_node_name;
void load (const XMLNode&);
int set_state (const XMLNode&);
XMLNode& get_state () const;
/** Get a string from our state.
* @param id property of Object node to look for.
* @param prop_name name of the Object property to return.
* @param empty if non-0, filled in with true if the property is currently non-existant, otherwise false.
* @return value of property `prop_name', or empty.
*/
std::string get_string (const std::string& id, const std::string& prop_name, bool* empty = 0);
template<typename T> void set_property (const std::string& id, const std::string& prop_name, const T& val) {
XMLNode* child = get_or_add_node (id);
child->set_property (prop_name.c_str(), val);
}
void remove_property (const std::string & id, const std:: string & prop_name);
/** Remove node with provided id.
* @param id property of Object node to look for.
*/
void remove_node (const std::string& id);
std::list<std::string> all_ids () const;
XMLNode* get_or_add_node (const std::string &);
static XMLNode* get_node (const XMLNode *, const std::string &);
static XMLNode* get_or_add_node (XMLNode *, const std::string &);
private:
// no copy construction. object_map saves pointers to _state XMLNodes
// use set_state(get_state())
GUIObjectState (const GUIObjectState& other);
XMLNode _state;
// ideally we'd use a O(1) hash table here,
// but O(log(N)) is fine already.
std::map <std::string, XMLNode*> object_map;
};
#endif /* __gtk_ardour_gui_object_h__ */
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