Enable/Disable New issue submit button based on title text (#519)

* Enable/Disable New issue submit button based on title text (#518)

* Remove target when deinit

* Adds check for title field empty text

* Uses IBAction instead of adding target

Classes/New Issue/NewIssue.storyboard

@@ -34,6 +34,9 @@
                                                     <nil key="textColor"/>
                                                     <fontDescription key="fontDescription" type="system" pointSize="16"/>
                                                     <textInputTraits key="textInputTraits" autocapitalizationType="sentences"/>
+                                                    <connections>
+                                                        <action selector="titleFieldEditingChanged:" destination="dCJ-7J-GVo" eventType="editingChanged" id="vFb-te-qq8"/>
+                                                    </connections>
                                                 </textField>
                                             </subviews>
                                             <constraints>

Classes/New Issue/NewIssueTableViewController.swift

@@ -123,6 +123,7 @@ final class NewIssueTableViewController: UITableViewController, UITextFieldDeleg
             target: self,
             action: #selector(onSend)
         )
+        navigationItem.rightBarButtonItem?.isEnabled = false
     }
     
     /// Attempts to sends the current forms information to GitHub, on success will redirect the user to the new issue
@@ -189,5 +190,12 @@ final class NewIssueTableViewController: UITableViewController, UITextFieldDeleg
         bodyField.becomeFirstResponder()
         return false
     }
-
+    
+    // MARK: Actions
+    
+    /// Called when editing changed on the title field, enable/disable submit button based on title text
+    @IBAction func titleFieldEditingChanged(_ sender: Any) {
+        navigationItem.rightBarButtonItem?.isEnabled = titleText != nil
+    }
+    
 }