SAP Fiori for iOS SDK Code Snippet: FUI Loading Indicator Providing Protocol

FUILoadingIndicatorProviding.swift

import Foundation
import SAPFiori

/// SAP Fiori loading indicator helper / utility methods
public protocol FUILoadingIndicatorProviding: class {
    var loadingIndicator: FUILoadingIndicatorView? { get set }
}

public extension FUILoadingIndicatorProviding where Self: UIViewController {
    
    /// Show a loading indicator
    ///
    /// - Parameter message: Message description to be display
    func showLoadingIndicator(_ message: String = "") {
        DispatchQueue.main.async {
            let indicator = FUILoadingIndicatorView(frame: self.view.frame)
            indicator.text = message
            self.view.addSubview(indicator)
            indicator.show()
            self.loadingIndicator = indicator
        }
    }
    
    /// Hide the current loading indicator
    func hideLoadingIndicator() {
        DispatchQueue.main.async {
            guard let loadingIndicator = self.loadingIndicator else { return }
            
            loadingIndicator.dismiss()
        }
    }
}