ok.

MVMCoreUI/Atoms/TextFields/FormEntryField.swift

@@ -23,7 +23,15 @@ import UIKit
     
     private var borderStrokeColor: UIColor = UIColor.mfSilver()
     private var borderPath: UIBezierPath = UIBezierPath()
-    public var bottomBar: UIView?
+    
+    public var bottomBar: CAShapeLayer = {
+        let layer = CAShapeLayer()
+        layer.backgroundColor = UIColor.black.cgColor
+        layer.drawsAsynchronously = true
+        layer.anchorPoint = CGPoint(x: 0.5, y: 1.0);
+        
+        return layer
+    }()
     
     var delegateObject: MVMCoreUIDelegateObject?
     
@@ -181,6 +189,8 @@ import UIKit
         feedbackLabelTrailing?.isActive = true
         layoutMarginsGuide.bottomAnchor.constraint(equalTo: feedbackLabel.bottomAnchor).isActive = true
         
+        fieldContainer.layer.addSublayer(bottomBar)
+        
         setNeedsLayout()
     }
     
@@ -194,21 +204,7 @@ import UIKit
     
     /// Configuration  for the field container view.
     private func setupFieldContainer(_ parentView: UIView) {
-        
         setupFieldContainerContent(parentView)
-        
-        let bottomBar = UIView(frame: .zero)
-        self.bottomBar = bottomBar
-        bottomBar.translatesAutoresizingMaskIntoConstraints = false
-        bottomBar.backgroundColor = .black
-        
-        parentView.addSubview(bottomBar)
-        
-        bottomBarHeightConstraint = bottomBar.heightAnchor.constraint(equalToConstant: 1)
-        bottomBarHeightConstraint?.isActive = true
-        bottomBar.leadingAnchor.constraint(equalTo: parentView.leadingAnchor).isActive = true
-        parentView.trailingAnchor.constraint(equalTo: bottomBar.trailingAnchor).isActive = true
-        parentView.bottomAnchor.constraint(equalTo: bottomBar.bottomAnchor).isActive = true
     }
     
     open override func updateView(_ size: CGFloat) {
@@ -220,6 +216,14 @@ import UIKit
         refreshUI()
     }
     
+    open override func layoutSubviews() {
+        super.layoutSubviews()
+        
+        if let fieldHeight = fieldContainer?.bounds.height {
+            bottomBar.frame = CGRect(x: 0, y: fieldHeight, width: fieldHeight, height: 1)
+        }
+    }
+    
     //--------------------------------------------------
     // MARK: - Drawing
     //--------------------------------------------------
@@ -233,7 +237,6 @@ import UIKit
             
             // Brings the other half of the line inside the view to prevent thinness from cropping.
             let insetLean: CGFloat = 0.5
-            
             borderPath.lineWidth = 1
             
             borderPath.move(to: CGPoint(x: frame.origin.x + insetLean, y: frame.origin.y + frame.size.height))
@@ -246,6 +249,19 @@ import UIKit
         }
     }
     
+    func resizeBottomBar(from: CGFloat, to: CGFloat, duration: CFTimeInterval) {
+        
+        let bottomBarHeight = CABasicAnimation(keyPath: "bounds.size.height")
+        bottomBarHeight.fromValue = from
+        bottomBarHeight.toValue = to
+        bottomBarHeight.duration = 0.1
+        bottomBarHeight.isRemovedOnCompletion = false
+        bottomBar.add(bottomBarHeight, forKey: "bottomBarHeight")
+        if let fieldBounds = fieldContainer?.bounds {
+            bottomBar.frame = CGRect(x: 0, y: fieldBounds.height, width: fieldBounds.width, height: to)
+        }
+    }
+    
     //--------------------------------------------------
     // MARK: - Constraint Methods
     //--------------------------------------------------
@@ -283,7 +299,7 @@ import UIKit
         hideBorder = false
         showErrorMessage = false
         borderStrokeColor = .mfSilver()
-        bottomBar?.backgroundColor = .black
+        bottomBar.backgroundColor = UIColor.black.cgColor
         descriptionLabel?.textColor = .mfBattleshipGrey()
         
         refreshUI()
@@ -295,13 +311,15 @@ import UIKit
         hideBorder = false
         bottomBarHeightConstraint?.constant = 4
         borderStrokeColor = .mfPumpkin()
-        bottomBar?.backgroundColor = .mfPumpkin()
+        bottomBar.backgroundColor = UIColor.mfPumpkin().cgColor
         
         if showError {
             showErrorMessage = true
             feedback = errorMessage
         }
         
+        resizeBottomBar(from: 1, to: 4, duration: 5)
+        
         refreshUI()
     }
     
@@ -310,7 +328,7 @@ import UIKit
         isUserInteractionEnabled = false
         bottomBarHeightConstraint?.constant = 1
         hideBorder = true
-        bottomBar?.backgroundColor = .clear
+        bottomBar.backgroundColor = UIColor.clear.cgColor
         
         refreshUI()
     }
@@ -321,7 +339,7 @@ import UIKit
         bottomBarHeightConstraint?.constant = 1
         hideBorder = false
         borderStrokeColor = .black
-        bottomBar?.backgroundColor = .black
+        bottomBar.backgroundColor = UIColor.black.cgColor
         
         refreshUI()
     }
@@ -333,7 +351,7 @@ import UIKit
         hideBorder = false
         feedback = nil
         descriptionLabel?.textColor = self.isEnabled ? UIColor.mfBattleshipGrey() : UIColor.mfSilver()
-        bottomBar?.backgroundColor = self.isEnabled ? (self.showErrorMessage ? UIColor.mfPumpkin() : .black) : UIColor.mfSilver()
+        bottomBar.backgroundColor = self.isEnabled ? (self.showErrorMessage ? UIColor.mfPumpkin().cgColor : UIColor.black.cgColor) : UIColor.mfSilver().cgColor
         
         refreshUI()
     }

MVMCoreUI/Atoms/TextFields/TextEntryField.swift

@@ -192,7 +192,7 @@ import UIKit
     }
     
     @objc func dismissTextFieldResponder(_ sender: Any?) {
-        
+        originalAppearance()
         textField?.resignFirstResponder()
     }
     
@@ -228,7 +228,7 @@ import UIKit
         
         if isValid {
             clearError()
-            bottomBar?.backgroundColor = .black
+            bottomBar.backgroundColor = UIColor.black.cgColor
         } else if let errMessage = errorMessage {
             feedback = errMessage
         }