Loading overlay to custom class + add to coordinator

Just an idea I had, since it was quite messy that a TableViewController
was handling all that. Instead now it should be reusable through the
ForayCoordinator itself, which means e.g. on details screen, we can show
the loading overlay.

1 files changed, 37 insertions, 0 deletions

diff --git a/foray/ForayLoadingOverlay.swift b/foray/ForayLoadingOverlay.swift
new file mode 100644
index 0000000..1aa6260
--- /dev/null
+++ b/foray/ForayLoadingOverlay.swift
@@ -0,0 +1,37 @@
+//
+//  ForayLoadingOverlay.swift
+//  foray
+//
+//  Created by Nicholas Tay on 21/3/2022.
+//
+
+import UIKit
+
+class ForayLoadingOverlay {
+    
+    var viewController: UIViewController
+    
+    let loadingIndicator: UIActivityIndicatorView = {
+        let aiv = UIActivityIndicatorView(frame: CGRect(x: 10, y: 5, width: 50, height: 50))
+        aiv.hidesWhenStopped = true
+        aiv.style = UIActivityIndicatorView.Style.medium
+        aiv.startAnimating()
+        return aiv
+    }()
+    
+    let alert: UIAlertController = UIAlertController(title: nil, message: "Grabbing data...", preferredStyle: .alert)
+    
+    init(viewController: UIViewController) {
+        self.viewController = viewController
+        alert.view.addSubview(self.loadingIndicator)
+    }
+    
+    func show() {
+        viewController.present(alert, animated: true)
+    }
+    
+    func hide() {
+        viewController.dismiss(animated: false)
+    }
+    
+}