Swift: how to use NSProgressIndicator?

Question

I want to use NSProgressIndicator to show some progress. But I could not find a method that increases the bar of this control. I also did not find an example on the Internet.

let progressbar = NSProgressIndicator()
progressbar.frame = NSRect(x: 100, y: 20, width: 150, height: 10)
progressbar.minValue = 0
progressbar.maxValue = 10
self.window.contentView?.addSubview(progressbar)

for i in 0...10 {
    progressbar.incrementBy(1)  //has no effect
}

Answer 1

You cannot demonstrate a progress bar in a loop like this.

, OS X , , . , 10, , , , - .

(progressbar.display()), , , , , 0,01 .

, incrementBy(1), . , - :

func delay(delay:Double, closure:()->()) {
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW,
        Int64(delay * Double(NSEC_PER_SEC))),
                   dispatch_get_main_queue(), closure)
}

class AppDelegate: NSObject, NSApplicationDelegate {
    @IBOutlet weak var progressIndicator: NSProgressIndicator!

    func applicationDidFinishLaunching(aNotification: NSNotification) {
        let progressbar = NSProgressIndicator()
        progressbar.frame = NSRect(x:100, y:20, width:150, height:10)
        progressbar.minValue = 0
        progressbar.maxValue = 10
        self.window.contentView?.addSubview(progressbar)

        self.progressIndicator = progressbar
        progressIndicator.indeterminate = false

        for i in 0...10 {
            delay(1.0 * Double(i), closure: { 
                self.progressIndicator.incrementBy(1)
            })
        }
    }
}

This queues the call incrementBy(1)at intervals of 1 second.