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/*
* Copyright 2011 Sven Weidauer <sven.weidauer@gmail.com>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf 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; version 2 of the License.
*
* NetSurf 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, see <http://www.gnu.org/licenses/>.
*/
#import <Cocoa/Cocoa.h>
#import "utils/errors.h"
#import "cocoa/schedule.h"
@interface ScheduledCallback : NSObject {
void (*callback)(void *userData);
void *userData;
}
- (instancetype)initWithCallback:(void (*)(void *))cb userData:(void *)ud;
- (void)schedule:(NSTimeInterval)ti;
@end
@implementation ScheduledCallback
- (instancetype)initWithCallback:(void (*)(void *))cb userData:(void *)ud
{
callback = cb;
userData = ud;
return self;
}
static NSMutableSet *timerSet = nil;
- (void)schedule:(NSTimeInterval)ti
{
if (nil == timerSet) {
timerSet = [[NSMutableSet alloc] init];
}
[self performSelector:@selector(timerFired) withObject:nil afterDelay:ti];
[timerSet addObject:self];
}
- (void)timerFired
{
if ([timerSet containsObject:self]) {
[timerSet removeObject:self];
callback(userData);
}
}
- (BOOL)isEqual:(id)object
{
if (object == self)
return YES;
if ([object class] != [self class])
return NO;
return ((ScheduledCallback *)object)->callback == callback && ((ScheduledCallback *)object)->userData == userData;
}
- (NSUInteger)hash
{
return (NSUInteger)callback + (NSUInteger)userData;
}
@end
/* exported interface documented in cocoa/schedule.h */
nserror cocoa_schedule(int t, void (*callback)(void *p), void *p)
{
ScheduledCallback *cb = [[ScheduledCallback alloc] initWithCallback:callback userData:p];
[timerSet removeObject:cb];
if (t >= 0) {
[cb schedule:(NSTimeInterval)t / 1000];
}
return NSERROR_OK;
}
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