Add haptic feedback to poll voting

Tusker/Views/Poll/PollOptionsView.swift

@@ -26,6 +26,8 @@ class PollOptionsView: UIControl {
     private let animationDuration: TimeInterval = 0.1
     private let scaledTransform = CGAffineTransform(scaleX: 0.95, y: 0.95)
     
+    private let generator = UIImpactFeedbackGenerator(style: .soft)
+    
     override var isEnabled: Bool {
         didSet {
             options.forEach { $0.checkbox.readOnly = !isEnabled }
@@ -106,6 +108,9 @@ class PollOptionsView: UIControl {
                 }
                 animator.startAnimation()
                 
+                generator.impactOccurred()
+                generator.prepare()
+                
                 return true
             }
         }
@@ -130,6 +135,11 @@ class PollOptionsView: UIControl {
                     view.transform = index == newIndex ? self.scaledTransform : .identity
                 }
             }
+            
+            if newIndex != nil {
+                generator.impactOccurred()
+                generator.prepare()
+            }
         }
         
         return true

Tusker/Views/Poll/StatusPollView.swift

@@ -136,6 +136,8 @@ class StatusPollView: UIView {
         voteButton.isEnabled = false
         voteButton.setTitle("Voted", for: .disabled)
         
+        UIImpactFeedbackGenerator(style: .medium).impactOccurred()
+        
         let request = Poll.vote(poll.id, choices: optionsView.checkedOptionIndices)
         mastodonController.run(request) { (response) in
             switch response {