import UIKit

class ProgressDialogView: UIView {

    let activityIndictor: UIActivityIndicatorView = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.white)

    init() {
        super.init(frame: CGRect(x: 0,
                                 y: 0,
                                 width: 0,
                                 height: 0))
        self.setup()
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        self.setup()
    }

    func setup() {
        self.addSubview(activityIndictor)
        activityIndictor.startAnimating()
    }

    override func didMoveToSuperview() {
        super.didMoveToSuperview()

        if let superview = self.superview {

            let width = superview.frame.size.width
            let height = superview.frame.size.height
            self.frame = CGRect(x: 0,
                                y: 0,
                                width: width,
                                height: height)
            self.backgroundColor = UIColor.init(white: 0.0, alpha: 0.5)

            let activityIndicatorSize: CGFloat = 40
            activityIndictor.frame = CGRect(x: width / 2 - activityIndicatorSize / 2,
                                            y: height / 2 - activityIndicatorSize / 2,
                                            width: activityIndicatorSize,
                                            height: activityIndicatorSize)
            layer.masksToBounds = true
        }
    }

    func show() {
        self.isHidden = false
    }

    func hide() {
        self.isHidden = true
    }

}