transmission/macosx/BlocklistScheduler.m

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/******************************************************************************
* $Id$
*
* Copyright (c) 2008 Transmission authors and contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#import "BlocklistScheduler.h"
#import "BlocklistDownloader.h"
#import "NSApplicationAdditions.h"
//thirty second delay before running after option is changed
#define SMALL_DELAY 30
//update one week after previous update
#define FULL_WAIT (60 * 60 * 24 * 7)
@interface BlocklistScheduler (Private)
- (void) runUpdater;
@end
@implementation BlocklistScheduler
BlocklistScheduler * fScheduler = nil;
+ (BlocklistScheduler *) scheduler
{
if (!fScheduler)
fScheduler = [[BlocklistScheduler alloc] init];
return fScheduler;
}
- (void) updateSchedule
{
if ([BlocklistDownloader isRunning])
return;
[self cancelSchedule];
if (![[NSUserDefaults standardUserDefaults] boolForKey: @"Blocklist"]
|| ![[NSUserDefaults standardUserDefaults] boolForKey: @"BlocklistAutoUpdate"])
return;
NSDate * lastUpdateDate = [[NSUserDefaults standardUserDefaults] objectForKey: @"BlocklistLastUpdate"];
if (lastUpdateDate)
lastUpdateDate = [lastUpdateDate addTimeInterval: FULL_WAIT];
NSDate * closeDate = [NSDate dateWithTimeIntervalSinceNow: SMALL_DELAY];
NSDate * useDate = lastUpdateDate ? [lastUpdateDate laterDate: closeDate] : closeDate;
fTimer = [[NSTimer alloc] initWithFireDate: useDate interval: 0 target: self selector: @selector(runUpdater)
userInfo: nil repeats: NO];
//current run loop usually means a second update won't work
NSRunLoop * loop = [NSApp isOnLeopardOrBetter] ? [NSRunLoop mainRunLoop] : [NSRunLoop currentRunLoop];
[loop addTimer: fTimer forMode: NSDefaultRunLoopMode];
[loop addTimer: fTimer forMode: NSModalPanelRunLoopMode];
[loop addTimer: fTimer forMode: NSEventTrackingRunLoopMode];
}
- (void) cancelSchedule
{
[fTimer invalidate];
fTimer = nil;
}
@end
@implementation BlocklistScheduler (Private)
- (void) runUpdater
{
fTimer = nil;
[BlocklistDownloader downloader];
}
@end