overflow-launcher.swift

import Stevia

class OverflowLauncher: NSObject {
    
    var backgroundView: UIView?
    var menuView: UIView?
    
    func testAddView() {
        guard let window = UIApplication.shared.windows.first else { return }
        let backgroundView = UIView(frame: window.bounds)
        self.backgroundView = backgroundView
        backgroundView.backgroundColor = .black
        backgroundView.alpha = 0
        window.sv(backgroundView)
        backgroundView.fillContainer()
        
        let menu = UIView()
        self.menuView = menu
        backgroundView.sv(menu)
        menu.height(205).leading(0).trailing(0)
        menu.Width == backgroundView.Width
        menu.Bottom == backgroundView.Bottom + 205
        menu.backgroundColor = .white
        menu.alpha = 1
        
        let tap = UITapGestureRecognizer(target: self, action: #selector(didTapBackground))
        backgroundView.isUserInteractionEnabled = true
        backgroundView.addGestureRecognizer(tap)
        
        DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
            menu.bottomConstraint?.constant = 5
            
            UIView.animate(withDuration: 0.5, delay: 0, usingSpringWithDamping: 0.8, initialSpringVelocity: 0.8, animations: {
                backgroundView.alpha = 0.5
                backgroundView.layoutIfNeeded()
            }) { (complete) in
            }
        }
    }
    
    @objc private func didTapBackground() {
        dismiss()
    }
    
    private func dismiss() {
        self.menuView?.bottomConstraint?.constant = 205
        UIView.animate(withDuration: 0.5, delay: 0, usingSpringWithDamping: 0.8, initialSpringVelocity: 0.8, animations: {
            self.backgroundView?.alpha = 0
            self.backgroundView?.layoutIfNeeded()
        }) { (complete) in
            self.backgroundView?.removeFromSuperview()
            self.backgroundView = nil
        }
    }
    
}