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TRIdleTimer.m
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TRIdleTimer.m
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//
// TRIdleTimer.m
// Jabber
//
// Created by David Chisnall on 09/01/2005.
// Copyright 2005 David Chisnall. All rights reserved.
//
#import "TRIdleTimer.h"
#ifdef MACOSX
//Helper functions to handle Carbon (yuck) event callbacks
pascal void TRIdleTimer_OSXHelper(EventLoopTimerRef inTimer,
EventLoopIdleTimerMessage inState,
void * inUserData);
OSStatus eventReceived(EventHandlerCallRef nextHandler, EventRef theEvent, void *userData);
#endif
@implementation TRIdleTimer
+ (TRIdleTimer *)scheduledTimerWithTimeInterval:(NSTimeInterval)seconds
idleTarget:(id)idleTarget
idleSelector:(SEL)idleSelector
unidleTarget:(id)unidleTarget
unidleSelector:(SEL)unidleSelector
{
return [[[TRIdleTimer alloc] initWithFireInterval:seconds
idleTarget:(id)idleTarget
idleSelector:(SEL)idleSelector
unidleTarget:(id)unidleTarget
unidleSelector:(SEL)unidleSelector] autorelease];
}
- (id) init
{
self = [super init];
if(self == nil)
{
return nil;
}
fired = NO;
return self;
}
- (id)initWithFireInterval:(NSTimeInterval)seconds
idleTarget:(id)idleTarget
idleSelector:(SEL)idleSelector
unidleTarget:(id)unidleTarget
unidleSelector:(SEL)unidleSelector
{
self = [self init];
if(self == nil)
{
return nil;
}
NSMethodSignature * signature;
signature = [idleTarget methodSignatureForSelector:idleSelector];
if([signature numberOfArguments] != 3)
{
[self release];
return nil;
}
idle = [NSInvocation invocationWithMethodSignature:signature];
signature = [unidleTarget methodSignatureForSelector:unidleSelector];
if([signature numberOfArguments] != 3)
{
[self release];
return nil;
}
unidle = [NSInvocation invocationWithMethodSignature:signature];
[self retain];
//Ensure that one reference to this timer is retained until it is invalidated
[unidle setSelector:idleSelector];
[idle setSelector:idleSelector];
[unidle setTarget:unidleTarget];
[idle setTarget:idleTarget];
[unidle setArgument:self atIndex:2];
[idle setArgument:self atIndex:2];
[unidle retainArguments];
[idle retainArguments];
[unidle retain];
[idle retain];
interval = seconds;
#ifdef MACOSX
if(InstallEventLoopIdleTimer(GetMainEventLoop(),
seconds * kEventDurationSecond,
seconds * kEventDurationSecond,
NewEventLoopIdleTimerUPP(TRIdleTimer_OSXHelper),
self,
&timer) != noErr)
{
[self release];
return nil;
}
//Request notification when the app gains and loses active status
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(appDeactivate:)
name:@"NSApplicationDidResignActiveNotification"
object:NSApp];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(appActivate:)
name:@"NSApplicationWillBecomeActiveNotification"
object:NSApp];
NSLog(@"Timer set");
#else
//Null (absence of) implementation - never fires. Add GNUstep/X11/whatever code here.
#endif
return self;
}
- (void) appDeactivate:(id)sender
{
EventTypeSpec eventType;
eventType.eventClass = kEventClassKeyboard;
eventType.eventKind = kEventRawKeyDown;
if(InstallEventHandler(GetEventMonitorTarget(),
NewEventHandlerUPP(eventReceived),
1,
&eventType,
self,
&keyHandler) != noErr)
{
}
eventType.eventClass = kEventClassMouse;
eventType.eventKind = kEventMouseMoved;
if(InstallEventHandler(GetEventMonitorTarget(),
NewEventHandlerUPP(eventReceived),
1,
&eventType,
self,
&mouseHandler) != noErr)
{
// [self release];
// return nil;
}
}
- (void) idling
{
if(difftime(time(NULL), lastEvent) >= interval)
{
if(!fired)
{
[self fireIdleAction];
}
fired = YES;
}
}
- (void)invalidate
{
if(isValid)
{
[self release];
isValid = NO;
#ifdef MACOSX
RemoveEventHandler(keyHandler);
RemoveEventHandler(mouseHandler);
RemoveEventLoopTimer(timer);
#endif
}
}
- (void) fireIdleAction
{
[idle invoke];
}
- (void) fireUnidleAction
{
lastEvent = time(NULL);
if(fired)
{
fired = NO;
[unidle invoke];
}
}
- (BOOL)isValid
{
return isValid;
}
- (void)setInterval:(NSTimeInterval)seconds
{
interval = seconds;
#ifdef MACOSX
RemoveEventLoopTimer(timer);
InstallEventLoopIdleTimer(GetCurrentEventLoop(),
seconds * kEventDurationSecond,
seconds * kEventDurationSecond,
NewEventLoopIdleTimerUPP(TRIdleTimer_OSXHelper),
self,
&timer);
#endif
}
- (NSTimeInterval)timeInterval
{
return interval;
}
- (void) dealloc
{
[self invalidate];
[idle release];
[unidle release];
#ifdef MACOSX
CFRelease(timer);
#endif
}
@end
#ifdef MACOSX
pascal void TRIdleTimer_OSXHelper(EventLoopTimerRef inTimer,
EventLoopIdleTimerMessage inState,
void * inUserData)
{
TRIdleTimer * idleTimer = (TRIdleTimer*) inUserData;
switch(inState)
{
case kEventLoopIdleTimerStarted:
NSLog(@"App idling");
case kEventLoopIdleTimerIdling:
[idleTimer idling];
break;
case kEventLoopIdleTimerStopped:
NSLog(@"App not idling");
[idleTimer fireUnidleAction];
}
}
OSStatus eventReceived(EventHandlerCallRef nextHandler, EventRef theEvent, void *userData)
{
NSLog(@"Event received!\n");
[(TRIdleTimer*)userData fireUnidleAction];
return noErr;
return CallNextEventHandler(nextHandler, theEvent);
}
#endif