ladish/grauph/src/libs/engine/OmObject.h

116 lines
3.1 KiB
C++

/* This file is part of Om. Copyright (C) 2006 Dave Robillard.
*
* Om 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.
*
* Om 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 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.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef OMOBJECT_H
#define OMOBJECT_H
#include <string>
#include <map>
#include <cstddef>
#include <cassert>
#include "MaidObject.h"
#include "util/Path.h"
using std::string; using std::map;
namespace Om {
class Patch;
class Node;
class Port;
/** An object in the "synth space" of Om - Patch, Node, Port, etc.
*
* Each of these is a MaidObject and so can be deleted in a realtime safe
* way from anywhere, and they all have a map of metadata for clients to store
* arbitrary values in (which the engine puts no significance to whatsoever).
*
* \ingroup engine
*/
class OmObject : public MaidObject
{
public:
OmObject(OmObject* parent, const string& name)
: m_parent(parent), m_name(name)
{
assert(parent == NULL || m_name.length() > 0);
assert(parent == NULL || m_name.find("/") == string::npos);
//assert(((string)path()).find("//") == string::npos);
}
virtual ~OmObject() {}
// Ghetto home-brew RTTI
virtual Patch* as_patch() { return NULL; }
virtual Node* as_node() { return NULL; }
virtual Port* as_port() { return NULL; }
OmObject* parent() const { return m_parent; }
inline const string& name() const { return m_name; }
virtual void set_path(const Path& new_path) {
m_name = new_path.name();
assert(m_name.find("/") == string::npos);
}
void set_metadata(const string& key, const string& value) { m_metadata[key] = value; }
const string& get_metadata(const string& key) {
static const string empty_string = "";
map<string, string>::iterator i = m_metadata.find(key);
if (i != m_metadata.end())
return (*i).second;
else
return empty_string;
}
const map<string, string>& metadata() const { return m_metadata; }
inline const Path path() const {
if (m_parent == NULL)
return Path(string("/").append(m_name));
else if (m_parent->path() == "/")
return Path(string("/").append(m_name));
else
return Path(m_parent->path() +"/"+ m_name);
}
/** Patch and Node override this to recursively add their children. */
virtual void add_to_store() = 0;
/** Patch and Node override this to recursively remove their children. */
virtual void remove_from_store() = 0;
protected:
OmObject() {}
OmObject* m_parent;
string m_name;
private:
// Prevent copies (undefined)
OmObject(const OmObject&);
OmObject& operator=(const OmObject& copy);
map<string, string> m_metadata;
};
} // namespace Om
#endif // OMOBJECT_H