From 3b5dfb38ec17324443ee9d0f63614b7e64d1afdb Mon Sep 17 00:00:00 2001
From: Stuart Breckenridge <stuart.breckenridge@icloud.com>
Date: Mon, 2 Nov 2020 11:08:54 +0800
Subject: [PATCH] Explainer text for accounts and extensions

Explainer text will display when no account/extension is selected.
---
 .../AccountsPreferencesViewController.swift   | 17 ++++++++++-
 ...ensionPointPreferencesViewController.swift | 30 +++++++++++++++++++
 2 files changed, 46 insertions(+), 1 deletion(-)

diff --git a/Mac/Preferences/Accounts/AccountsPreferencesViewController.swift b/Mac/Preferences/Accounts/AccountsPreferencesViewController.swift
index 2153f13d3..ab2393748 100644
--- a/Mac/Preferences/Accounts/AccountsPreferencesViewController.swift
+++ b/Mac/Preferences/Accounts/AccountsPreferencesViewController.swift
@@ -226,7 +226,7 @@ private extension AccountsPreferencesViewController {
 	
 	func showController(_ controller: NSViewController) {
 		hideController()
-		
+	
 		addChild(controller)
 		controller.view.translatesAutoresizingMaskIntoConstraints = false
 		detailView.addSubview(controller.view)
@@ -239,6 +239,21 @@ private extension AccountsPreferencesViewController {
 			children.removeAll()
 			controller.view.removeFromSuperview()
 		}
+		
+		if tableView.selectedRow == -1 {
+			var helpText = ""
+			if sortedAccounts.count == 0 {
+				helpText = NSLocalizedString("Add an account by clicking the + button.", comment: "Add Account Explainer")
+			} else {
+				helpText = NSLocalizedString("Select an account or add a new account by clicking the + button.", comment: "Add Account Explainer")
+			}
+			
+			let textHostingController = NSHostingController(rootView: Text(helpText).multilineTextAlignment(.center))
+			addChild(textHostingController)
+			textHostingController.view.translatesAutoresizingMaskIntoConstraints = false
+			detailView.addSubview(textHostingController.view)
+			detailView.addFullSizeConstraints(forSubview: textHostingController.view)
+		}
 	}
 	
 }
diff --git a/Mac/Preferences/ExtensionPoints/ExtensionPointPreferencesViewController.swift b/Mac/Preferences/ExtensionPoints/ExtensionPointPreferencesViewController.swift
index d07249fba..eca8dc36a 100644
--- a/Mac/Preferences/ExtensionPoints/ExtensionPointPreferencesViewController.swift
+++ b/Mac/Preferences/ExtensionPoints/ExtensionPointPreferencesViewController.swift
@@ -179,6 +179,21 @@ private extension ExtensionPointPreferencesViewController {
 	func showDefaultView() {
 		activeExtensionPoints = Array(ExtensionPointManager.shared.activeExtensionPoints.values).sorted(by: { $0.title < $1.title })
 		tableView.reloadData()
+		
+		if tableView.selectedRow == -1 {
+			var helpText = ""
+			if activeExtensionPoints.count == 0 {
+				helpText = NSLocalizedString("Add an extension point by clicking the + button.", comment: "Extension Explainer")
+			} else {
+				helpText = NSLocalizedString("Select an extension point or add a new extension point by clicking the + button.", comment: "Extension Explainer")
+			}
+			
+			let textHostingController = NSHostingController(rootView: Text(helpText).multilineTextAlignment(.center))
+			addChild(textHostingController)
+			textHostingController.view.translatesAutoresizingMaskIntoConstraints = false
+			detailView.addSubview(textHostingController.view)
+			detailView.addFullSizeConstraints(forSubview: textHostingController.view)
+		}
 	}
 	
 	func showController(_ controller: NSViewController) {
@@ -195,6 +210,21 @@ private extension ExtensionPointPreferencesViewController {
 			children.removeAll()
 			controller.view.removeFromSuperview()
 		}
+		
+		if tableView.selectedRow == -1 {
+			var helpText = ""
+			if activeExtensionPoints.count == 0 {
+				helpText = NSLocalizedString("Add an extension point by clicking the + button.", comment: "Extension Explainer")
+			} else {
+				helpText = NSLocalizedString("Select an extension point or add a new extension point by clicking the + button.", comment: "Extension Explainer")
+			}
+			
+			let textHostingController = NSHostingController(rootView: Text(helpText).multilineTextAlignment(.center))
+			addChild(textHostingController)
+			textHostingController.view.translatesAutoresizingMaskIntoConstraints = false
+			detailView.addSubview(textHostingController.view)
+			detailView.addFullSizeConstraints(forSubview: textHostingController.view)
+		}
 	}
 
 	func enableOauth1(_ provider: OAuth1SwiftProvider.Type, extensionPointType: ExtensionPoint.Type) {