A textview delegate to catch and throw messages as needed by textview events

MNGTextViewHandler.swift

//
//  MNGTextViewHandler.swift
//  
//
//  Created by Tommie N. Carter, Jr., MBA on 6/18/15.
//  Copyright © 2015 MING Technology. All rights reserved.
//

import UIKit

struct MNGTextViewEvents {
    static let NextButtonTappedForTextView = "MNGTextViewHandler.NextButtonTappedForTextView"
}
class MNGTextViewHandler: NSObject, UITextViewDelegate {

    var fields:[UITextView]? = []
    
    private struct Constants {
        static let DefaultStoryText = "Use audio dication or keyboard to type your story here."
    }
    
    func textView(textView: UITextView, shouldChangeTextInRange range: NSRange, replacementText text: String) -> Bool {
        return true
    }
    func textView(textView: UITextView, shouldInteractWithTextAttachment textAttachment: NSTextAttachment, inRange characterRange: NSRange) -> Bool {
        return false
    }
    func textView(textView: UITextView, shouldInteractWithURL URL: NSURL, inRange characterRange: NSRange) -> Bool {
        return false
    }
    func textViewDidBeginEditing(textView: UITextView) {
        textView.backgroundColor = UIColor.yellowColor()
        
    }
    func textViewDidChange(textView: UITextView) {
        
    }
    func textViewDidChangeSelection(textView: UITextView) {
        
    }
    func textViewDidEndEditing(textView: UITextView) {
       textView.backgroundColor = UIColor.whiteColor()
        if textView.text == Constants.DefaultStoryText {
            textView.text = ""
        }
    }
    func textViewShouldBeginEditing(textView: UITextView) -> Bool {
        return true
    }
    func textViewShouldEndEditing(textView: UITextView) -> Bool {
        return true
    }
}