Added activity indicator to table cell. Updated rounded method.

Author: ivanvorobei

Example Apps/SparrowKit.xcodeproj/project.xcworkspace/xcuserdata/ivanvorobei.xcuserdatad/UserInterfaceState.xcuserstate

@@ -59,6 +59,10 @@ open class SPTableViewCell: UITableViewCell {
         }
     }
 
+    // MARK: - Views
+    
+    internal var activityIndicatorView: UIActivityIndicatorView?
+    
     // MARK: - Init
 
     public override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
@@ -84,6 +88,7 @@ open class SPTableViewCell: UITableViewCell {
     open override func prepareForReuse() {
         super.prepareForReuse()
         currentIndexPath = nil
+        setLoading(false)
     }
 
     open override func tintColorDidChange() {
@@ -100,8 +105,6 @@ open class SPTableViewCell: UITableViewCell {
         }
     }
 
-    // MARK: - Override
-    
     open override func setHighlighted(_ highlighted: Bool, animated: Bool) {
         super.setHighlighted(highlighted, animated: animated)
         let higlightContent = (higlightStyle == .content)
@@ -110,6 +113,44 @@ open class SPTableViewCell: UITableViewCell {
         }
     }
 
+    open override func layoutSubviews() {
+        super.layoutSubviews()
+        activityIndicatorView?.setToCenter()
+    }
+    
+    // MARK: - Public
+
+    open func setLoading(_ state: Bool) {
+        
+        // Validate
+        
+        if state {
+            if activityIndicatorView?.isAnimating ?? false { return }
+        } else {
+            if activityIndicatorView == nil { return }
+        }
+        
+        // Process
+        
+        let contentViews = contentView.subviews
+        
+        if state {
+            if activityIndicatorView == nil {
+                let activityIndicatorView = UIActivityIndicatorView()
+                contentView.addSubviews(activityIndicatorView)
+                self.activityIndicatorView = activityIndicatorView
+            }
+            contentViews.forEach({ $0.isHidden = true })
+            activityIndicatorView?.startAnimating()
+            layoutSubviews()
+        } else {
+            contentViews.forEach({ $0.isHidden = false })
+            activityIndicatorView?.stopAnimating()
+            activityIndicatorView?.removeFromSuperview()
+            activityIndicatorView = nil
+        }
+    }
+    
     // MARK: - Models
 
     /**

Sources/SparrowKit/UIKit/Classes/Table/SPTableViewCell.swift

@@ -78,6 +78,13 @@ extension UIView {
         subviews.forEach { $0.removeFromSuperview() }
     }
 
+    /**
+     SparrowKit: State if current view has superview.
+     */
+    open var hasSuperview: Bool {
+        superview != nil
+    }
+    
     /**
      SparrowKit: Take screenshoot of view as `UIImage`.
      */
@@ -302,38 +309,26 @@ extension UIView {
     }
 
     /**
-     SparrowKit: Correct rounded corners by current frame.
+     SparrowKit: Round corners .
 
-     - important:
-     Need call after changed frame. Better leave it in `layoutSubviews` method.
-     
-     - parameter corners: Case of `UIRectCorner`
+     - parameter corners: Case of `CACornerMask`. Which corners need to round.
+     - parameter curve: Case of `CornerCurve`. Style of rounded corners.
      - parameter radius: Amount of radius.
      */
-    open func roundCorners(_ corners: UIRectCorner = .allCorners, radius: CGFloat) {
-        let maskPath = UIBezierPath(
-            roundedRect: bounds,
-            byRoundingCorners: corners,
-            cornerRadii: CGSize(width: radius, height: radius)
-        )
-        let shape = CAShapeLayer()
-        shape.path = maskPath.cgPath
-        layer.mask = shape
+    open func roundCorners(_ corners: CACornerMask = [.layerMaxXMaxYCorner, .layerMaxXMinYCorner, .layerMinXMaxYCorner, .layerMinXMinYCorner], curve: CornerCurve = .continuous, radius: CGFloat) {
+        layer.cornerRadius = radius
+        layer.maskedCorners = corners
+        
+        if #available(iOS 13.0, tvOS 13.0, *) {
+            layer.cornerCurve = curve.layerCornerCurve
+        }
     }
 
     /**
-     SparrowKit: Rounded corners to maximum of corner radius.
-     
-     - important:
-     Need call after changed frame. Better leave it in `layoutSubviews` method.
-     
-     - parameter curve: Style of round curve.
+     SparrowKit: Round side by minimum `height` or `width`.
      */
-    open func roundCorners(_ curve: CornerCurve = .continuous) {
-        if #available(iOS 13.0, tvOS 13.0, *) {
-            layer.cornerCurve = curve.layerCornerCurve
-        }
-        layer.cornerRadius = min(frame.width, frame.height) / 2
+    open func roundMinimumSide() {
+        roundCorners(radius: min(frame.width / 2, frame.height / 2))
     }
 
     /**
@@ -435,6 +430,7 @@ extension UIView {
         }, completion: completion)
     }
 
+    // MARK: - Models
 
     public enum CornerCurve {