Add setting to determine what happens after closing the last open workspace (#1194)

* adds setting to determine what happens after closing the last open window, closing #1193

* clean up code and add comment

* minor rephrase

* refactor reopenWindowAfterWorkspaceClose to reopenWindowAfterClose and add switch resolves @lukepistrol review

* finalize refactor

* respond to @lukepistrol's constructive comment

* Fix error

* revert a change

---------

Co-authored-by: luah5 <russo.173.328@gmail.com>

Author: luah5

CodeEdit/Features/AppPreferences/Model/General/GeneralPreferences.swift

@@ -39,6 +39,10 @@ extension AppPreferences {
         /// The reopen behavior of the app
         var reopenBehavior: ReopenBehavior = .welcome
 
+        /// Decides what the app does after a workspace is closed
+        var reopenWindowAfterClose: ReopenWindowBehavior = .doNothing
+
+        /// The size of the project navigator
         var projectNavigatorSize: ProjectNavigatorSize = .medium
 
         /// The Find Navigator Detail line limit
@@ -96,6 +100,10 @@ extension AppPreferences {
                 ReopenBehavior.self,
                 forKey: .reopenBehavior
             ) ?? .welcome
+            self.reopenWindowAfterClose = try container.decodeIfPresent(
+                ReopenWindowBehavior.self,
+                forKey: .reopenWindowAfterClose
+            ) ?? .doNothing
             self.projectNavigatorSize = try container.decodeIfPresent(
                 ProjectNavigatorSize.self,
                 forKey: .projectNavigatorSize
@@ -212,6 +220,12 @@ extension AppPreferences {
         case newDocument
     }
 
+    enum ReopenWindowBehavior: String, Codable {
+        case showWelcomeWindow
+        case doNothing
+        case quit
+    }
+
     enum ProjectNavigatorSize: String, Codable {
         case small
         case medium

CodeEdit/Features/AppPreferences/Sections/GeneralPreferences/GeneralPreferencesView.swift

@@ -40,7 +40,10 @@ struct GeneralPreferencesView: View {
             fileExtensionsSection
             fileIconStyleSection
             tabBarStyleSection
-            reopenBehaviorSection
+            Group {
+                reopenBehaviorSection
+                reopenAfterWindowCloseBehaviourSection
+            }
             projectNavigatorSizeSection
             findNavigatorDetailSection
             Group {
@@ -162,6 +165,24 @@ private extension GeneralPreferencesView {
         }
     }
 
+    var reopenAfterWindowCloseBehaviourSection: some View {
+        PreferencesSection("After last window closed") {
+            Picker(
+                "After last window closed:",
+                selection: $prefs.preferences.general.reopenWindowAfterClose
+            ) {
+                Text("Do nothing")
+                    .tag(AppPreferences.ReopenWindowBehavior.doNothing)
+                Divider()
+                Text("Show Welcome Window")
+                    .tag(AppPreferences.ReopenWindowBehavior.showWelcomeWindow)
+                Text("Quit")
+                    .tag(AppPreferences.ReopenWindowBehavior.quit)
+            }
+            .frame(width: inputWidth)
+        }
+    }
+
     var projectNavigatorSizeSection: some View {
         PreferencesSection("Project Navigator Size") {
             Picker("Project Navigator Size", selection: $prefs.preferences.general.projectNavigatorSize) {

CodeEdit/Features/Documents/Controllers/CodeEditDocumentController.swift

@@ -12,6 +12,8 @@ final class CodeEditDocumentController: NSDocumentController {
         FileManager.default
     }()
 
+    private var prefs: AppPreferencesModel = .shared
+
     override func newDocument(_ sender: Any?) {
         guard let newDocumentUrl = self.newDocumentUrl else { return }
 
@@ -76,6 +78,18 @@ final class CodeEditDocumentController: NSDocumentController {
 
     override func removeDocument(_ document: NSDocument) {
         super.removeDocument(document)
+
+        if CodeEditDocumentController.shared.documents.isEmpty {
+            switch prefs.preferences.general.reopenWindowAfterClose {
+            case .showWelcomeWindow:
+                // Opens the welcome window
+                NSApp.openWindow(.welcome)
+            case .quit:
+                // Quits CodeEdit
+                NSApplication.shared.terminate(nil)
+            case .doNothing: break
+            }
+        }
     }
 
     override func clearRecentDocuments(_ sender: Any?) {