[gnome-contacts] contact-list: Rework and simplify scroll_to_contact()

[Niels De Graef <nielsdg src gnome org>]

commit 7d1b553a39f2bffe2bed281876169504ac9819d6
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Sun Apr 17 08:28:55 2022 +0200

    contact-list: Rework and simplify scroll_to_contact()
    
    We're only using this method to scroll to the selected contact, so
    remove the optional argument and rename for clarity.

 src/contacts-contact-list.vala | 11 ++++-------
 src/contacts-main-window.vala  |  2 +-
 2 files changed, 5 insertions(+), 8 deletions(-)
---
diff --git a/src/contacts-contact-list.vala b/src/contacts-contact-list.vala
index fe27a73e..45129980 100644
--- a/src/contacts-contact-list.vala
+++ b/src/contacts-contact-list.vala
@@ -146,16 +146,13 @@ public class Contacts.ContactList : Adw.Bin {
     }
   }
 
-  public void scroll_to_contact (Gtk.ListBoxRow? row = null) {
-    unowned ContactDataRow? selected_row = null;
+  public void scroll_to_selected () {
+    unowned var row = this.listbox.get_selected_row ();
     if (row == null)
-      selected_row = (ContactDataRow?) this.listbox.get_selected_row ();
-    else
-      selected_row = (ContactDataRow) row;
+      return;
 
     GLib.Timeout.add (100, () => {
-      if (selected_row != null)
-        selected_row.grab_focus ();
+      row.grab_focus ();
       return GLib.Source.REMOVE;
     });
   }
diff --git a/src/contacts-main-window.vala b/src/contacts-main-window.vala
index 89cbe3f3..14126c31 100644
--- a/src/contacts-main-window.vala
+++ b/src/contacts-main-window.vala
@@ -339,7 +339,7 @@ public class Contacts.MainWindow : Adw.ApplicationWindow {
       this.state = UiState.SHOWING;
     }
     this.contact_pane.stop_editing (cancel);
-    this.contacts_list.scroll_to_contact ();
+    this.contacts_list.scroll_to_selected ();
 
     this.right_header.title_widget = new Adw.WindowTitle ("", "");
   }