From ae1b209db438c0bc6bb8d594cd85cea8ccaf2637 Mon Sep 17 00:00:00 2001
From: dankito <git@dankito.net>
Date: Fri, 31 Jul 2020 01:07:36 +0200
Subject: [PATCH] Implemented hiding update all accounts' transaction when no
 account has been added; Implemented array extension property isNotEmpty

---
 ui/BankingiOSApp/BankingiOSApp/ContentView.swift         | 8 +++++---
 ui/BankingiOSApp/BankingiOSApp/persistence/AppData.swift | 4 ++++
 ui/BankingiOSApp/BankingiOSApp/ui/SwiftExtensions.swift  | 9 +++++++++
 .../BankingiOSApp/ui/views/AccountsTab.swift             | 2 +-
 4 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/ui/BankingiOSApp/BankingiOSApp/ContentView.swift b/ui/BankingiOSApp/BankingiOSApp/ContentView.swift
index 1690cca8..f4cc7e52 100644
--- a/ui/BankingiOSApp/BankingiOSApp/ContentView.swift
+++ b/ui/BankingiOSApp/BankingiOSApp/ContentView.swift
@@ -113,9 +113,11 @@ struct ContentView: View {
         // due to a SwiftUI bug this cannot be set in AccountsTab directly, so i have to do it here
         self.navigationBarTitle = "Accounts"
         
-        self.leadingNavigationBarItem = AnyView(UpdateButton { _ in
-            self.presenter.updateAccountsTransactionsAsync { _ in }
-        })
+        if data.hasAtLeastOneAccountBeenAdded {
+            self.leadingNavigationBarItem = AnyView(UpdateButton { _ in
+                self.presenter.updateAccountsTransactionsAsync { _ in }
+            })
+        }
     }
     
 }
diff --git a/ui/BankingiOSApp/BankingiOSApp/persistence/AppData.swift b/ui/BankingiOSApp/BankingiOSApp/persistence/AppData.swift
index dcf0160f..8bc57669 100644
--- a/ui/BankingiOSApp/BankingiOSApp/persistence/AppData.swift
+++ b/ui/BankingiOSApp/BankingiOSApp/persistence/AppData.swift
@@ -8,12 +8,16 @@ class AppData : ObservableObject {
     
     @Published var banks: [Customer] = []
     
+    @Published var hasAtLeastOneAccountBeenAdded: Bool = false
+    
     
     init() {
         banks = presenter.customers
+        hasAtLeastOneAccountBeenAdded = banks.isNotEmpty
         
         presenter.addAccountsChangedListener { banks in
             self.banks = banks
+            self.hasAtLeastOneAccountBeenAdded = banks.isNotEmpty
         }
     }
     
diff --git a/ui/BankingiOSApp/BankingiOSApp/ui/SwiftExtensions.swift b/ui/BankingiOSApp/BankingiOSApp/ui/SwiftExtensions.swift
index 203bf4f5..3fa81ad0 100644
--- a/ui/BankingiOSApp/BankingiOSApp/ui/SwiftExtensions.swift
+++ b/ui/BankingiOSApp/BankingiOSApp/ui/SwiftExtensions.swift
@@ -90,6 +90,15 @@ extension Array where Element == NSDecimalNumber {
 }
 
 
+extension Array {
+    
+    var isNotEmpty: Bool {
+        return !isEmpty
+    }
+    
+}
+
+
 extension NSObject {
     
     var className: String {
diff --git a/ui/BankingiOSApp/BankingiOSApp/ui/views/AccountsTab.swift b/ui/BankingiOSApp/BankingiOSApp/ui/views/AccountsTab.swift
index 36dcc3a6..016231f7 100644
--- a/ui/BankingiOSApp/BankingiOSApp/ui/views/AccountsTab.swift
+++ b/ui/BankingiOSApp/BankingiOSApp/ui/views/AccountsTab.swift
@@ -11,7 +11,7 @@ struct AccountsTab: View {
 
     var body: some View {
         VStack {
-            if data.banks.isEmpty == false {
+            if data.banks.isNotEmpty {
                 Form {
                     AllBanksListItem(banks: data.banks)