QSPasteboardMonitor.m

#import "QSPasteboardMonitor.h"


@implementation QSPasteboardMonitor

+ (id)sharedInstance{
    static QSPasteboardMonitor *_sharedInstance;
    if (!_sharedInstance){
        _sharedInstance = [[[self class] allocWithZone:nil] init];
        
    }
    return _sharedInstance;
}

- (id) init{
    if (self=[super init]){
        pollTimer=[NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(checkPasteboard:) userInfo:nil repeats:YES];
        lastChangeCount=0;
    }
    return self;
}


- (void)checkPasteboard:(NSTimer *)timer{
    NSInteger changeCount = [[NSPasteboard generalPasteboard] changeCount];
    if (changeCount==lastChangeCount) {
        return;
    }
    lastChangeCount = changeCount;
	[[NSNotificationCenter defaultCenter] postNotificationName:QSPasteboardDidChangeNotification object:@{@"Pasteboard" : [NSPasteboard generalPasteboard], @"ActiveApp" : [[NSWorkspace sharedWorkspace] frontmostApplication].bundleIdentifier}];
}


@end