Merge pull request #1200 from wordpress-mobile/issue/notify_changes_only_on_user_event

Notify changes on TextView only on user events

Author: SergioEstevao

Aztec/Classes/Extensions/UITextView+Delegate.swift

@@ -6,6 +6,9 @@ extension UITextView {
     /// Notifies the delegate of a text change.
     ///
     final func notifyTextViewDidChange() {
+        if let textView = self as? TextView, !textView.shouldNotifyOfNonUserChanges {
+            return
+        }
         delegate?.textViewDidChange?(self)
         NotificationCenter.default.post(name: UITextView.textDidChangeNotification, object: self)
     }

Aztec/Classes/TextKit/TextView.swift

@@ -173,6 +173,11 @@ open class TextView: UITextView {
     ///
     open var pasteboardDelegate: TextViewPasteboardDelegate = AztecTextViewPasteboardDelegate()
 
+
+    /// If this is true the text view will notify is delegate and notification system when changes happen by calls to methods like setHTML
+    ///
+    open var shouldNotifyOfNonUserChanges = true
+
     // MARK: - Customizable Input VC
 
     private var customInputViewController: UIInputViewController?