Combined all the "add"s into a single popover.

iOS/Add/AddFolderViewController.swift

@@ -0,0 +1,92 @@
+//
+//  AddFolderViewController.swift
+//  NetNewsWire
+//
+//  Created by Maurice Parker on 4/16/19.
+//  Copyright © 2019 Ranchero Software, LLC. All rights reserved.
+//
+
+import UIKit
+import Account
+import RSCore
+
+class AddFolderViewController: UITableViewController {
+
+	@IBOutlet weak var addButton: UIBarButtonItem!
+	@IBOutlet weak var nameTextField: UITextField!
+	@IBOutlet weak var accountLabel: UILabel!
+	@IBOutlet weak var accountPickerView: UIPickerView!
+	
+	private var accounts: [Account]!
+	
+	override func viewDidLoad() {
+
+		super.viewDidLoad()
+		
+		accounts = AccountManager.shared.sortedAccounts
+		accountLabel.text = (accounts[0] as DisplayNameProvider).nameForDisplay
+		
+		accountPickerView.dataSource = self
+		accountPickerView.delegate = self
+		
+		// I couldn't figure out the gap at the top of the UITableView, so I took a hammer to it.
+		tableView.contentInset = UIEdgeInsets(top: -28, left: 0, bottom: 0, right: 0)
+    }
+
+	@IBAction func cancel(_ sender: Any) {
+		dismiss(animated: true)
+	}
+	
+	@IBAction func add(_ sender: Any) {
+		
+		let account = accounts[accountPickerView.selectedRow(inComponent: 0)]
+		if let folderName = nameTextField.text {
+			account.ensureFolder(with: folderName)
+		}
+		
+		dismiss(animated: true)
+		
+	}
+	
+}
+
+extension AddFolderViewController: UIPickerViewDataSource, UIPickerViewDelegate {
+	
+	func numberOfComponents(in pickerView: UIPickerView) ->Int {
+		return 1
+	}
+	
+	func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
+		return accounts.count
+	}
+	
+	func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
+		return (accounts[row] as DisplayNameProvider).nameForDisplay
+	}
+	
+	func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
+		accountLabel.text = (accounts[row] as DisplayNameProvider).nameForDisplay
+	}
+	
+}
+
+extension AddFolderViewController: UITextFieldDelegate {
+	
+	func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
+		updateUI()
+		return true
+	}
+	
+	func textFieldDidEndEditing(_ textField: UITextField) {
+		updateUI()
+	}
+	
+}
+
+private extension AddFolderViewController {
+	
+	private func updateUI() {
+		addButton.isEnabled = !(nameTextField.text?.isEmpty ?? false)
+	}
+
+}