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/*
* Author:
* mderezynski <mderezynski@users.sourceforge.net>
*
* Copyright (C) 2006 Author
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#ifndef CONNECTION_POOL_H
#define CONNECTION_POOL_H
#include <glib-object.h>
#include <sigc++/sigc++.h>
#include <map>
#include <stddef.h>
#include <string>
#include <exception>
namespace Inkscape {
/**
* @class ConnectionPool
* an auxilliary class to manage sigc::connections as if the referred object
* were a GObject; in that way, the class that holds a ConnectionPool does not
* need to also hold several sigc::connection objects
*/
class ConnectionPool {
public:
typedef std::map<std::string, sigc::connection*> ConnectionMap;
struct NameExistsException : public std::exception {
virtual const char* what() const throw() { return "Inkscape::ConnectionPool: name exists"; }
};
struct NameDoesNotExistException : public std::exception {
virtual const char* what() const throw() { return "Inkscape::ConnectionPool: name doesn't exist"; }
};
void add_connection(std::string name, sigc::connection* connection) {
if (_map.find(name) != _map.end()) {
throw NameExistsException();
}
_map.insert(std::make_pair(name, connection));
}
void del_connection(std::string name) {
ConnectionMap::iterator iter = _map.find(name);
if (iter == _map.end()) {
throw NameDoesNotExistException();
}
sigc::connection* connection = (*iter).second;
connection->disconnect();
delete connection;
}
static Inkscape::ConnectionPool* new_connection_pool(std::string name) {
return new ConnectionPool(name);
}
static void del_connection_pool(ConnectionPool* pool) {
delete pool;
}
static void connect_destroy(GObject *obj, ConnectionPool *pool) {
g_object_connect (obj, "swapped-signal::destroy", G_CALLBACK(del_connection_pool), pool, NULL);
}
operator std::string() {
return _name;
}
private:
ConnectionPool(std::string name) : _name(name) {}
virtual ~ConnectionPool() {
for (ConnectionMap::iterator iter = _map.begin(), end = _map.end(); iter != end; ++iter) {
sigc::connection* connection = (*iter).second;
connection->disconnect();
delete connection;
}
}
ConnectionMap _map;
std::string _name;
};
}
#endif
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8 :
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