Focus terminal on enter, strip trailing spaces on doc focus out

src/Services/Document.vala

@@ -300,6 +300,19 @@ namespace Scratch.Services {
                 completion_shown = false;
             });
 
+            source_view.enter_notify_event.connect (() => {
+                if (!source_view.has_focus) {
+                    source_view.grab_focus ();
+                }
+            });
+
+            source_view.focus_out_event.connect (() => {
+                if (Scratch.settings.get_boolean ("strip-trailing-on-save")) {
+
+                    strip_trailing_spaces ();
+                }
+            });
+
             loaded = file == null;
 
             add (main_stack);

src/Widgets/Terminal.vala

@@ -149,6 +149,14 @@ public class Code.Terminal : Gtk.Box {
         };
         key_controller.key_pressed.connect (key_pressed);
 
+        // Cannot use event controller in Gtk3 because of https://gitlab.gnome.org/GNOME/gtk/-/issues/7225
+        terminal.enter_notify_event.connect (() => {
+            if (!terminal.has_focus) {
+                terminal.grab_focus ();
+
+            }
+        });
+
         terminal.button_press_event.connect ((event) => {
             if (event.button == 3) {
                 paste_action.set_enabled (current_clipboard.wait_is_text_available ());