allows setting Milestone's loading indicator's color (#2195)

* allows setting loading indicator's color

* updated spinner color to .white in Milestones/Labels/People

Author: BrianLitwin

Classes/Labels/LabelsViewController.swift

@@ -30,6 +30,7 @@ final class LabelsViewController: BaseListViewController2<String>, BaseListViewC
         preferredContentSize = Styles.Sizes.contextMenuSize
         title = Constants.Strings.labels
         feed.collectionView.backgroundColor = Styles.Colors.menuBackgroundColor.color
+        feed.setLoadingSpinnerColor(to: .white)
         dataSource = self
     }
 

Classes/Milestones/MilestonesViewController.swift

@@ -43,6 +43,7 @@ MilestoneSectionControllerDelegate {
         title = Constants.Strings.milestone
         preferredContentSize = Styles.Sizes.contextMenuSize
         feed.collectionView.backgroundColor = Styles.Colors.menuBackgroundColor.color
+        feed.setLoadingSpinnerColor(to: .white)
         dataSource = self
     }
 

Classes/People/PeopleViewController.swift

@@ -55,6 +55,7 @@ PeopleSectionControllerDelegate {
         }
 
         feed.collectionView.backgroundColor = Styles.Colors.menuBackgroundColor.color
+        feed.setLoadingSpinnerColor(to: .white)
         preferredContentSize = Styles.Sizes.contextMenuSize
         updateSelectionCount()
     }

Classes/Systems/Feed.swift

@@ -66,6 +66,10 @@ final class Feed: NSObject, UIScrollViewDelegate {
     func showEmptyLoadingView() {
         loadingView.isHidden = false
     }
+    
+    func setLoadingSpinnerColor(to color: UIColor) {
+        loadingView.setSpinnerColor(to: color)
+    }
 
     func viewDidLoad() {
         guard let view = adapter.viewController?.view else { return }

Classes/Views/EmptyLoadingView.swift

@@ -17,6 +17,10 @@ final class EmptyLoadingView: UIView {
         activity.startAnimating()
         addSubview(activity)
     }
+    
+    func setSpinnerColor(to color: UIColor) {
+        activity.color = color 
+    }
 
     required init?(coder aDecoder: NSCoder) {
         fatalError("init(coder:) has not been implemented")