development: added keyboard notification delegation handlers for EditorDelegate

Sources/iOS/Button.swift

@@ -137,7 +137,6 @@ open class Button: UIButton, Pulseable, PulseableLayer {
      */
 	public required init?(coder aDecoder: NSCoder) {
 		super.init(coder: aDecoder)
-        tintColor = Color.blue.base
 		prepare()
 	}
 	

Sources/iOS/Editor.swift

@@ -171,6 +171,22 @@ public protocol EditorDelegate {
     @objc
     optional func editor(editor: Editor, textView: UITextView, shouldInteractWith textAttachment: NSTextAttachment, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool
     */
+    
+    /**
+     A delegation method that is executed when the keyboard will open.
+     - Parameter editor: An Editor.
+     - Parameter willShowKeyboard value: A NSValue.
+     */
+    @objc
+    optional func editor(editor: Editor, willShowKeyboard value: NSValue)
+    
+    /**
+     A delegation method that is executed when the keyboard will close.
+     - Parameter editor: An Editor.
+     - Parameter willHideKeyboard value: A NSValue.
+     */
+    @objc
+    optional func editor(editor: Editor, willHideKeyboard value: NSValue)
 }
 
 open class Editor: View {
@@ -179,6 +195,9 @@ open class Editor: View {
         return 0 < width && 0 < height && nil != superview
     }
     
+    /// Is the keyboard hidden.
+    open fileprivate(set) var isKeyboardHidden = true
+    
     /// TextStorage instance that is observed while editing.
     open fileprivate(set) var textStorage: TextStorage!
     
@@ -249,6 +268,11 @@ open class Editor: View {
         textView.frame = CGRect(x: textViewEdgeInsets.left, y: textViewEdgeInsets.top, width: width - textViewEdgeInsets.left - textViewEdgeInsets.right, height: height - textViewEdgeInsets.top - textViewEdgeInsets.bottom)
     }
     
+    /// Deinitializer.
+    deinit {
+        NotificationCenter.default.removeObserver(self)
+    }
+    
     /**
      Prepares the view instance when intialized. When subclassing,
      it is recommended to override the prepare method
@@ -263,6 +287,7 @@ open class Editor: View {
         prepareTextStorage()
         prepareRegularExpression()
         prepareTextView()
+        prepareKeyboardNotificationObservers()
     }
 }
 
@@ -296,6 +321,52 @@ extension Editor {
     fileprivate func prepareRegularExpression() {
         textStorage.expression = try? NSRegularExpression(pattern: pattern, options: [])
     }
+    
+    /// Prepares the keyboard notification center observers.
+    fileprivate func prepareKeyboardNotificationObservers() {
+        NotificationCenter.default.addObserver(self, selector: #selector(handleKeyboardWillShow(notification:)), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
+        NotificationCenter.default.addObserver(self, selector: #selector(handleKeyboardWillHide(notification:)), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
+    }
+}
+
+extension Editor {
+    /**
+     Handler for when the keyboard will open.
+     - Parameter notification: A Notification.
+     */
+    @objc
+    fileprivate func handleKeyboardWillShow(notification: Notification) {
+        guard isKeyboardHidden else {
+            return
+        }
+        
+        isKeyboardHidden = false
+        
+        guard let v = notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue else {
+            return
+        }
+        
+        delegate?.editor?(editor: self, willShowKeyboard: v)
+    }
+    
+    /**
+     Handler for when the keyboard will close.
+     - Parameter notification: A Notification.
+     */
+    @objc
+    fileprivate func handleKeyboardWillHide(notification: Notification) {
+        guard !isKeyboardHidden else {
+            return
+        }
+        
+        isKeyboardHidden = true
+        
+        guard let v = notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue else {
+            return
+        }
+        
+        delegate?.editor?(editor: self, willHideKeyboard: v)
+    }
 }
 
 extension Editor: TextStorageDelegate {

Sources/iOS/Material+Motion.swift

@@ -182,7 +182,7 @@ extension UIViewController {
      - Returns: An optional UIViewControllerAnimatedTransitioning.
      */
     open func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
-        return isMotionEnabled ? Motion() : nil
+        return isMotionEnabled ? Motion(isPresenting: false, isContainer: false) : nil
     }
     
     /**
@@ -309,8 +309,7 @@ open class MotionPresentationController: UIPresentationController {
         presentedViewController.transitionCoordinator?.animate(alongsideTransition: { (context) in })
     }
     
-    open override func presentationTransitionDidEnd(_ completed: Bool) {
-    }
+    open override func presentationTransitionDidEnd(_ completed: Bool) {}
     
     open override func dismissalTransitionWillBegin() {
         guard nil != containerView else {
@@ -320,8 +319,7 @@ open class MotionPresentationController: UIPresentationController {
         presentedViewController.transitionCoordinator?.animate(alongsideTransition: { (context) in })
     }
     
-    open override func dismissalTransitionDidEnd(_ completed: Bool) {
-    }
+    open override func dismissalTransitionDidEnd(_ completed: Bool) {}
     
     open override var frameOfPresentedViewInContainerView: CGRect {
         return containerView?.bounds ?? .zero
@@ -386,7 +384,7 @@ open class Motion: NSObject {
     
     /// The view that is being transitioned to.
     open var toView: UIView {
-        return transitionContext.view(forKey: .to)!
+        return toViewController.view
     }
     
     /// The subviews of the view being transitioned to.
@@ -396,7 +394,7 @@ open class Motion: NSObject {
     
     /// The view that is being transitioned from.
     open var fromView: UIView {
-        return transitionContext.view(forKey: .from)!
+        return fromViewController.view
     }
     
     /// The subviews of the view being transitioned from.
@@ -591,6 +589,7 @@ extension Motion {
         toView.isHidden = isPresenting
         containerView.insertSubview(toView, belowSubview: transitionView)
         
+        toView.frame = fromView.frame
         toView.updateConstraints()
         toView.setNeedsLayout()
         toView.layoutIfNeeded()

Sources/iOS/TextField.swift

@@ -382,7 +382,8 @@ open class TextField: UITextField {
 	}
 	
     open override func becomeFirstResponder() -> Bool {
-        layoutSubviews()
+        setNeedsLayout()
+        layoutIfNeeded()
         return super.becomeFirstResponder()
     }
     
@@ -506,7 +507,7 @@ extension TextField {
     /// Layout the detailLabel.
     fileprivate func layoutDetailLabel() {
         let c = dividerContentEdgeInsets
-        detailLabel.height = detailLabel.sizeThatFits(CGSize(width: width, height: CGFloat.greatestFiniteMagnitude)).height
+        detailLabel.height = detailLabel.sizeThatFits(CGSize(width: width, height: .greatestFiniteMagnitude)).height
         detailLabel.x = c.left
         detailLabel.y = height + detailVerticalOffset
         detailLabel.width = width - c.left - c.right