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/**
* Navit, a modular navigation system.
* Copyright (C) 2005-2008 Navit Team
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* 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.
*/
#include <string.h>
#include <stdlib.h>
#include "event.h"
#include "plugin.h"
#include "debug.h"
static struct event_methods event_methods;
static const char *e_requestor;
static const char *e_system;
static int has_quit;
#define require_method_helper(m)\
if(!event_methods.m) {\
dbg(lvl_error, "Can't find event system method %s. Event system is %s%s",\
#m ,e_system?"set to ":"not set.", e_system?e_system:"");\
#define require_method(m)\
require_method_helper(m)\
return;\
}
#define require_method2(m,r)\
require_method_helper(m)\
return r;\
}
void event_main_loop_run(void) {
require_method(main_loop_run);
event_methods.main_loop_run();
}
void event_main_loop_quit(void) {
if (event_methods.main_loop_quit)
event_methods.main_loop_quit();
has_quit=1;
}
int event_main_loop_has_quit(void) {
return has_quit;
}
struct event_watch *
event_add_watch(int fd, enum event_watch_cond cond, struct callback *cb) {
require_method2(add_watch, NULL);
return event_methods.add_watch(fd, cond, cb);
}
void event_remove_watch(struct event_watch *ev) {
require_method(remove_watch);
event_methods.remove_watch(ev);
}
/**
* Add an event timeout
*
* @param the timeout itself in msec
* @param multi 0 means that the timeout will fire only once, 1 means that it will repeat
* @param the callback to call when the timeout expires
*
* @returns the result of the event_methods.add_timeout() call
*/
struct event_timeout *
event_add_timeout(int timeout, int multi, struct callback *cb) {
require_method2(add_timeout, NULL);
return event_methods.add_timeout(timeout, multi, cb);
}
void event_remove_timeout(struct event_timeout *ev) {
require_method(remove_timeout);
event_methods.remove_timeout(ev);
}
struct event_idle *
event_add_idle(int priority, struct callback *cb) {
require_method2(add_idle, NULL);
return event_methods.add_idle(priority,cb);
}
void event_remove_idle(struct event_idle *ev) {
require_method(remove_idle);
event_methods.remove_idle(ev);
}
void event_call_callback(struct callback_list *cb) {
require_method(call_callback);
event_methods.call_callback(cb);
}
char const *event_system(void) {
return e_system;
}
int event_request_system(const char *system, const char *requestor) {
void (*event_type_new)(struct event_methods *meth);
if (e_system) {
if (strcmp(e_system, system)) {
dbg(lvl_error,"system '%s' already requested by '%s', can't set to '%s' as requested from '%s'", e_system, e_requestor,
system, requestor);
return 0;
}
return 1;
}
event_type_new=plugin_get_category_event(system);
if (! event_type_new) {
dbg(lvl_error,"unsupported event system '%s' requested from '%s'", system, requestor);
return 0;
}
event_type_new(&event_methods);
e_system=system;
e_requestor=requestor;
return 1;
}
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