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/* Implementation of NSTimer for GNUstep
Copyright (C) 1995, 1996 Free Software Foundation, Inc.
Written by: Andrew Kachites McCallum <mccallum@gnu.ai.mit.edu>
Created: March 1996
This file is part of the GNUstep Base Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <Foundation/NSTimer.h>
#include <Foundation/NSDate.h>
#include <Foundation/NSException.h>
#include <gnustep/base/RunLoop.h>
#include <gnustep/base/Invocation.h>
@implementation NSTimer
/* This is the designated initializer. */
- initWithTimeInterval: (NSTimeInterval)seconds
targetOrInvocation: t
selector: (SEL)sel
userInfo: info
repeats: (BOOL)f
{
[super init];
_interval = seconds;
_fire_date = [[NSDate alloc] initWithTimeIntervalSinceNow: seconds];
_retain_count = 0;
_is_valid = YES;
_target = t;
_selector = sel;
_info = info;
_repeats = f;
return self;
}
- (void) dealloc
{
[_fire_date release];
[super dealloc];
}
+ timerWithTimeInterval: (NSTimeInterval)ti
invocation: invocation
repeats: (BOOL)f
{
return [[[self alloc] initWithTimeInterval: ti
targetOrInvocation: invocation
selector: NULL
userInfo: nil
repeats: f]
autorelease];
}
+ timerWithTimeInterval: (NSTimeInterval)ti
target: object
selector: (SEL)selector
userInfo: info
repeats: (BOOL)f
{
return [[[self alloc] initWithTimeInterval: ti
targetOrInvocation: object
selector: selector
userInfo: info
repeats: f]
autorelease];
}
+ scheduledTimerWithTimeInterval: (NSTimeInterval)ti
invocation: invocation
repeats: (BOOL)f
{
id t = [self timerWithTimeInterval: ti
invocation: invocation
repeats: f];
[[RunLoop currentInstance] addTimer: t forMode: RunLoopDefaultMode];
return t;
}
+ scheduledTimerWithTimeInterval: (NSTimeInterval)ti
target: object
selector: (SEL)selector
userInfo: info
repeats: (BOOL)f
{
id t = [self timerWithTimeInterval: ti
target: object
selector: selector
userInfo: info
repeats: f];
[[RunLoop currentInstance] addTimer: t forMode: RunLoopDefaultMode];
return t;
}
- (void) fire
{
if (_selector)
[_target perform: _selector withObject: self];
else
[_target invoke];
if (!_repeats)
[self invalidate];
else if (_is_valid)
{
NSTimeInterval ti = [_fire_date timeIntervalSinceReferenceDate];
NSTimeInterval now = [NSDate timeIntervalSinceReferenceDate];
assert (now < 0.0);
while (ti < now) // xxx remove this
ti += _interval;
[_fire_date release];
_fire_date = [[NSDate alloc] initWithTimeIntervalSinceReferenceDate: ti];
}
}
- (void) invalidate
{
assert (_is_valid);
_is_valid = NO;
}
- (BOOL) isValid
{
return _is_valid;
}
- fireDate
{
return _fire_date;
}
- userInfo
{
return _info;
}
@end
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