FloatingPanelSurfaceView supports UIAppearance

Author: scenee

Framework/Sources/FloatingPanel.swift

@@ -68,7 +68,6 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
         viewcontroller = vc
 
         surfaceView = FloatingPanelSurfaceView()
-        surfaceView.backgroundColor = .white
 
         backdropView = FloatingPanelBackdropView()
         backdropView.backgroundColor = .black

Framework/Sources/FloatingPanelSurfaceView.swift

@@ -15,7 +15,7 @@ public class FloatingPanelSurfaceView: UIView {
     public let grabberHandle: GrabberHandleView = GrabberHandleView()
 
     /// Offset of the grabber handle from the top
-    public var grabberTopPadding: CGFloat = 6.0 { didSet {
+    @objc dynamic public var grabberTopPadding: CGFloat = 6.0 { didSet {
         setNeedsUpdateConstraints()
     } }
 
@@ -25,10 +25,10 @@ public class FloatingPanelSurfaceView: UIView {
     }
 
     /// Grabber view width and height
-    public var grabberHandleWidth: CGFloat = 36.0 { didSet {
+    @objc dynamic public var grabberHandleWidth: CGFloat = 36.0 { didSet {
         setNeedsUpdateConstraints()
     } }
-    public var grabberHandleHeight: CGFloat = 5.0 { didSet {
+    @objc dynamic public var grabberHandleHeight: CGFloat = 5.0 { didSet {
         setNeedsUpdateConstraints()
     } }
 
@@ -48,7 +48,7 @@ public class FloatingPanelSurfaceView: UIView {
     private var color: UIColor? = .white { didSet { setNeedsLayout() } }
     var bottomOverflow: CGFloat = 0.0 // Must not call setNeedsLayout()
 
-    public override var backgroundColor: UIColor? {
+    @objc dynamic public override var backgroundColor: UIColor? {
         get { return color }
         set { color = newValue }
     }
@@ -57,34 +57,34 @@ public class FloatingPanelSurfaceView: UIView {
     ///
     /// `self.contentView` is masked with the top rounded corners automatically on iOS 11 and later.
     /// On iOS 10, they are not automatically masked because of a UIVisualEffectView issue. See https://forums.developer.apple.com/thread/50854
-    public var cornerRadius: CGFloat {
+    @objc dynamic public var cornerRadius: CGFloat {
         set { containerView.layer.cornerRadius = newValue; setNeedsLayout() }
         get { return containerView.layer.cornerRadius }
     }
 
     /// A Boolean indicating whether the surface shadow is displayed.
-    public var shadowHidden: Bool = false  { didSet { setNeedsLayout() } }
+    @objc dynamic public var shadowHidden: Bool = false { didSet { setNeedsLayout() } }
 
     /// The color of the surface shadow.
-    public var shadowColor: UIColor = .black  { didSet { setNeedsLayout() } }
+    @objc dynamic public var shadowColor: UIColor = .black  { didSet { setNeedsLayout() } }
 
     /// The offset (in points) of the surface shadow.
-    public var shadowOffset: CGSize = CGSize(width: 0.0, height: 1.0)  { didSet { setNeedsLayout() } }
+    @objc dynamic public var shadowOffset: CGSize = CGSize(width: 0.0, height: 1.0)  { didSet { setNeedsLayout() } }
 
     /// The opacity of the surface shadow.
-    public var shadowOpacity: Float = 0.2 { didSet { setNeedsLayout() } }
+    @objc dynamic public var shadowOpacity: Float = 0.2 { didSet { setNeedsLayout() } }
 
     /// The blur radius (in points) used to render the surface shadow.
-    public var shadowRadius: CGFloat = 3  { didSet { setNeedsLayout() } }
+    @objc dynamic public var shadowRadius: CGFloat = 3  { didSet { setNeedsLayout() } }
 
     /// The width of the surface border.
-    public var borderColor: UIColor?  { didSet { setNeedsLayout() } }
+    @objc dynamic public var borderColor: UIColor?  { didSet { setNeedsLayout() } }
 
     /// The color of the surface border.
-    public var borderWidth: CGFloat = 0.0  { didSet { setNeedsLayout() } }
+    @objc dynamic public var borderWidth: CGFloat = 0.0  { didSet { setNeedsLayout() } }
 
     /// Offset of the container view from the top
-    public var containerTopInset: CGFloat = 0.0 { didSet {
+    @objc dynamic public var containerTopInset: CGFloat = 0.0 { didSet {
         setNeedsUpdateConstraints()
     } }
 
@@ -141,7 +141,7 @@ public class FloatingPanelSurfaceView: UIView {
         addSubview(grabberHandle)
         grabberHandle.translatesAutoresizingMaskIntoConstraints = false
         NSLayoutConstraint.activate([
-            grabberHandleWidthConstraint,
+            rabberHandleWidthConstraint,
             grabberHandleHeightConstraint,
             grabberHandleTopConstraint,
             grabberHandle.centerXAnchor.constraint(equalTo: centerXAnchor),