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XMPPSystemInputActivityMonitor.m
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XMPPSystemInputActivityMonitor.m
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#import "XMPPSystemInputActivityMonitor.h"
#import "XMPP.h"
#import "XMPPLogging.h"
#import "XMPPFramework.h"
#if ! __has_feature(objc_arc)
#warning This file must be compiled with ARC. Use -fobjc-arc flag (or convert project to ARC).
#endif
#if TARGET_OS_IPHONE
#warning This file does not work on TARGET_OS_IPHONE.
#endif
// Log levels: off, error, warn, info, verbose
#if DEBUG
static const int xmppLogLevel = XMPP_LOG_LEVEL_VERBOSE;
#else
static const int xmppLogLevel = XMPP_LOG_LEVEL_WARN;
#endif
const NSTimeInterval XMPPSystemInputActivityMonitorInactivityTimeIntervalNone = -1;
#define INACTIVITY_TIME_INTERVAL 300.0
#define TIMER_TIME_INTERVAL 1.0
@implementation XMPPSystemInputActivityMonitor
- (id)init
{
return [self initWithDispatchQueue:NULL];
}
- (id)initWithDispatchQueue:(dispatch_queue_t)queue
{
if ((self = [super initWithDispatchQueue:queue]))
{
inactivityTimeInterval = INACTIVITY_TIME_INTERVAL;
active = YES;
}
return self;
}
- (BOOL)activate:(XMPPStream *)aXmppStream
{
XMPPLogTrace();
if ([super activate:aXmppStream])
{
XMPPLogVerbose(@"%@: Activated", THIS_FILE);
#if !TARGET_OS_IPHONE
CFTimeInterval secondsSinceLastUserInteraction = CGEventSourceSecondsSinceLastEventType(kCGEventSourceStateHIDSystemState, kCGAnyInputEventType);
NSDate *date = [NSDate dateWithTimeIntervalSinceNow:(secondsSinceLastUserInteraction * -1)];
[self _setLastActivityDate:date];
timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, moduleQueue);
if (timer)
{
dispatch_source_set_timer(timer, dispatch_walltime(NULL, 0), (TIMER_TIME_INTERVAL * NSEC_PER_SEC), 0);
dispatch_source_set_event_handler(timer, ^{
CFTimeInterval secondsSinceLastUserInteraction = CGEventSourceSecondsSinceLastEventType(kCGEventSourceStateHIDSystemState, kCGAnyInputEventType);
NSDate *date = [NSDate dateWithTimeIntervalSinceNow:(secondsSinceLastUserInteraction * -1)];
[self _setLastActivityDate:date];
});
dispatch_resume(timer);
}
#endif
return YES;
}
return NO;
}
- (void)deactivate
{
XMPPLogTrace();
if(timer)
{
dispatch_source_cancel(timer);
timer = NULL;
}
[super deactivate];
}
- (void)dealloc{
if(timer)
{
dispatch_source_cancel(timer);
timer = NULL;
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#pragma Internal
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
- (void)_setLastActivityDate:(NSDate *)flag{
dispatch_block_t block = ^{
lastActivityDate = flag;
if(inactivityTimeInterval > XMPPSystemInputActivityMonitorInactivityTimeIntervalNone)
{
if(active && -[lastActivityDate timeIntervalSinceNow] > inactivityTimeInterval)
{
active = NO;
[multicastDelegate xmppSystemInputActivityMonitorDidBecomeInactive:self];
}
else if(!active && -[lastActivityDate timeIntervalSinceNow] < inactivityTimeInterval)
{
active = YES;
[multicastDelegate xmppSystemInputActivityMonitorDidBecomeActive:self];
}
}else{
active = YES;
}
};
if (dispatch_get_specific(moduleQueueTag))
block();
else
dispatch_async(moduleQueue, block);
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#pragma Properties
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
- (BOOL)isActive
{
__block BOOL result = YES;;
dispatch_block_t block = ^{
result = active;
};
if (dispatch_get_specific(moduleQueueTag))
block();
else
dispatch_sync(moduleQueue, block);
return result;
}
- (NSDate *)lastActivityDate
{
__block NSDate *result = nil;;
dispatch_block_t block = ^{
result = lastActivityDate;
};
if (dispatch_get_specific(moduleQueueTag))
block();
else
dispatch_sync(moduleQueue, block);
return result;
}
- (NSTimeInterval)inactivityTimeInterval
{
__block NSTimeInterval result = XMPPSystemInputActivityMonitorInactivityTimeIntervalNone;
dispatch_block_t block = ^{
result = inactivityTimeInterval;
};
if (dispatch_get_specific(moduleQueueTag))
block();
else
dispatch_sync(moduleQueue, block);
return result;
}
- (void)setInactivityTimeInterval:(NSTimeInterval)flag
{
dispatch_block_t block = ^{
inactivityTimeInterval = flag;
};
if (dispatch_get_specific(moduleQueueTag))
block();
else
dispatch_async(moduleQueue, block);
}
@end