Handle closing second or subsequent window

src/Application.vala

@@ -199,6 +199,38 @@ namespace Scratch {
             return windows.length () > 0 ? windows.last ().data as MainWindow : null;
         }
 
+        public async void handle_quit_app () {
+            unowned List<Gtk.Window> windows;
+            windows = get_windows ();
+            //NOTE This yields the last opened window at head of list (may change in future?)
+            while (windows.length () > 0) {
+                if (!yield handle_quit_window ((MainWindow) (windows.first ().data))) {
+                    return;
+                }
+
+                windows = get_windows ();
+            }
+
+            return;
+        }
+
+        public async bool handle_quit_window (MainWindow window_to_close) {
+            unowned List<Gtk.Window> windows = get_windows ();
+            var is_last_window = windows.length () == 1;
+            if (!yield window_to_close.check_unsaved_changes (is_last_window)) {
+                return false;
+            }
+
+            if (is_last_window) {
+                window_to_close.before_quit (); // Update settings
+            }
+            // Just destroy window - we have already checked whether any docs need saving
+            // When the last window is removed and destroyed the app quits.
+            remove_window (window_to_close);
+            window_to_close.destroy ();
+            return true;
+        }
+
         public static int main (string[] args) {
 // By default, profile whole app when profiling is enabled in meson_options.txt
 // These conditional statements can be moved to profile sections of code

src/MainWindow.vala

@@ -99,7 +99,8 @@ namespace Scratch {
         public const string ACTION_TO_UPPER_CASE = "action-to-upper-case";
         public const string ACTION_DUPLICATE = "action-duplicate";
         public const string ACTION_FULLSCREEN = "action-fullscreen";
-        public const string ACTION_QUIT = "action-quit";
+        public const string ACTION_QUIT = "action-quit-app";
+        public const string ACTION_CLOSE_WINDOW = "action-close-window";
         public const string ACTION_ZOOM_DEFAULT = "action-zoom-default";
         public const string ACTION_ZOOM_IN = "action-zoom-in";
         public const string ACTION_ZOOM_OUT = "action-zoom-out";
@@ -160,7 +161,8 @@ namespace Scratch {
             { ACTION_TO_UPPER_CASE, action_to_upper_case },
             { ACTION_DUPLICATE, action_duplicate },
             { ACTION_FULLSCREEN, action_fullscreen },
-            { ACTION_QUIT, action_quit },
+            { ACTION_QUIT, action_quit_app },
+            { ACTION_CLOSE_WINDOW, action_close_window },
             { ACTION_ZOOM_DEFAULT, action_set_default_zoom },
             { ACTION_ZOOM_IN, action_zoom_in },
             { ACTION_ZOOM_OUT, action_zoom_out},
@@ -225,6 +227,7 @@ namespace Scratch {
             action_accelerators.set (ACTION_DUPLICATE, "<Control>d");
             action_accelerators.set (ACTION_FULLSCREEN, "F11");
             action_accelerators.set (ACTION_QUIT, "<Control>q");
+            action_accelerators.set (ACTION_CLOSE_WINDOW, "<Control>F4");
             action_accelerators.set (ACTION_ZOOM_DEFAULT, "<Control>0");
             action_accelerators.set (ACTION_ZOOM_DEFAULT, "<Control>KP_0");
             action_accelerators.set (ACTION_ZOOM_IN, "<Control>plus");
@@ -716,7 +719,7 @@ namespace Scratch {
         }
 
         protected override bool delete_event (Gdk.EventAny event) {
-            action_quit ();
+            action_close_window ();
             return true;
         }
 
@@ -804,10 +807,10 @@ namespace Scratch {
         }
 
         // Check that there no unsaved changes and all saves are successful
-        private async bool check_unsaved_changes () {
+        public async bool check_unsaved_changes (bool app_closing) {
             document_view.is_closing = true;
             foreach (var doc in document_view.docs) {
-                if (!yield (doc.do_close (true))) {
+                if (!yield (doc.do_close (app_closing))) {
                     document_view.current_document = doc;
                     return false;
                 }
@@ -841,7 +844,7 @@ namespace Scratch {
             }
         }
 
-        private void update_saved_state () {
+        private void update_window_state_setting () {
             // Save window state
             var state = get_window ().get_state ();
             if (Gdk.WindowState.MAXIMIZED in state) {
@@ -865,14 +868,14 @@ namespace Scratch {
 
         // SIGTERM/SIGINT Handling
         public bool quit_source_func () {
-            action_quit ();
+            action_quit_app ();
             return false;
         }
 
         // For exit cleanup
-        private void handle_quit () {
-            document_view.save_opened_files ();
-            update_saved_state ();
+        public void before_quit () {
+            document_view.update_opened_files_setting ();
+            update_window_state_setting ();
         }
 
         public void set_default_zoom () {
@@ -959,13 +962,12 @@ namespace Scratch {
             preferences_dialog.present ();
         }
 
-        private void action_quit () {
-            handle_quit ();
-            check_unsaved_changes.begin ((obj, res) => {
-                if (check_unsaved_changes.end (res)) {
-                    app.quit ();
-                }
-            });
+        private void action_close_window () {
+            app.handle_quit_window.begin (this);
+        }
+
+        private void action_quit_app () {
+            app.handle_quit_app.begin ();
         }
 
         private void action_open () {

src/Widgets/DocumentView.vala

@@ -133,7 +133,7 @@ public class Scratch.Widgets.DocumentView : Gtk.Box {
                     var should_close = doc.do_close.end (res);
                     // Ensure removed doc is saved by handling this first
                     if (!is_closing) {
-                        save_opened_files ();
+                        update_opened_files_setting ();
                     }
                     //`page-detached` handler will perform rest of necessary cleanup
                     tab_view.close_page_finish (tab, should_close);
@@ -337,7 +337,7 @@ public class Scratch.Widgets.DocumentView : Gtk.Box {
                 if (range != SelectionRange.EMPTY) {
                     Idle.add_full (GLib.Priority.LOW, () => { // This helps ensures new tab is drawn before opening document.
                         current_document.source_view.select_range (range);
-                        save_opened_files ();
+                        update_opened_files_setting ();
 
                         return false;
                     });
@@ -364,7 +364,7 @@ public class Scratch.Widgets.DocumentView : Gtk.Box {
             doc.source_view.cursor_position = cursor_position;
         }
 
-        save_opened_files ();
+        update_opened_files_setting ();
     }
 
     public void next_document () {
@@ -399,7 +399,7 @@ public class Scratch.Widgets.DocumentView : Gtk.Box {
         }
     }
 
-    public void save_opened_files () {
+    public void update_opened_files_setting () {
         if (privacy_settings.get_boolean ("remember-recent-files")) {
             var vb = new VariantBuilder (new VariantType ("a(si)"));
             docs.foreach ((doc) => {
@@ -542,7 +542,7 @@ public class Scratch.Widgets.DocumentView : Gtk.Box {
             current_document = doc;
         }
 
-        save_opened_files ();
+        update_opened_files_setting ();
     }
 
     private unowned Hdy.TabView? on_doc_to_new_window (Hdy.TabView tab_view) {