refactor VoiceRecordButton's actions

Yep/Views/MessageToolbar/MessageToolbar.swift

@@ -151,20 +151,20 @@ class MessageToolbar: UIToolbar {
         button.layer.borderColor = UIColor.messageToolBarHighlightColor().CGColor
         button.tintColor = UIColor.messageToolBarHighlightColor()
 
-        button.yepTouchBegin = {
-            self.trySendVoiceMessageBegin()
+        button.touchesBegin = { [weak self] in
+            self?.trySendVoiceMessageBegin()
         }
 
-        button.yepTouchesMoved = {
+        button.touchesMoved = {
             
         }
 
-        button.yepTouchesEnded = {
-            self.trySendVoiceMessageEnd()
+        button.touchesEnded = { [weak self] in
+            self?.trySendVoiceMessageEnd()
         }
 
-        button.yepTouchesCancelled = { 
-            self.trySendVoiceMessageCancel()
+        button.touchesCancelled = { [weak self] in
+            self?.trySendVoiceMessageCancel()
         }
 
         return button

Yep/Views/MessageToolbar/VoiceRecordButton.swift

@@ -10,53 +10,42 @@ import UIKit
 
 class VoiceRecordButton: UIView {
     
-    var yepTouchBegin : (() -> ())?
+    var touchesBegin : (() -> ())?
     
-    var yepTouchesEnded : (() -> ())?
+    var touchesEnded : (() -> ())?
     
-    var yepTouchesCancelled : (() -> ())?
+    var touchesCancelled : (() -> ())?
     
-    var yepTouchesMoved : (() -> ())?
+    var touchesMoved : (() -> ())?
     
     override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
         super.touchesBegan(touches, withEvent: event)
         
-        if let yepTouchBegin = yepTouchBegin {
-            yepTouchBegin()
-        }
+        touchesBegin?()
     }
     
     override func touchesEnded(touches: Set<NSObject>, withEvent event: UIEvent) {
         super.touchesEnded(touches, withEvent: event)
         
-        if let yepTouchesEnded = yepTouchesEnded {
-            yepTouchesEnded()
-        }
+        touchesEnded?()
     }
     
     override func touchesCancelled(touches: Set<NSObject>!, withEvent event: UIEvent!) {
         super.touchesCancelled(touches, withEvent: event)
         
-        if let yepTouchesCancelled = yepTouchesCancelled {
-            yepTouchesCancelled()
-        }
+        touchesCancelled?()
     }
     
     override func touchesMoved(touches: Set<NSObject>, withEvent event: UIEvent) {
         super.touchesMoved(touches, withEvent: event)
         
-        if let yepTouchesMoved = yepTouchesMoved {
-            yepTouchesMoved()
-        }
+        touchesMoved?()
     }
     
-
-
     override func didMoveToSuperview() {
-        
         super.didMoveToSuperview()
-        makeUI()
 
+        makeUI()
     }
 
     private func makeUI() {