[simple-scan/ricotz/vala] Reference of [GtkChild] fields is handled by GtkBuilder, type must be unowned

[Rico Tzschichholz <ricotz src gnome org>]

commit 8c2f62073ae0cd9446f9e102013f890ebbc9a093
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Wed Mar 17 12:15:08 2021 +0100

    Reference of [GtkChild] fields is handled by GtkBuilder, type must be unowned

 src/app-window.vala         | 70 ++++++++++++++++++++++-----------------------
 src/authorize-dialog.vala   |  6 ++--
 src/preferences-dialog.vala | 36 +++++++++++------------
 3 files changed, 56 insertions(+), 56 deletions(-)
---
diff --git a/src/app-window.vala b/src/app-window.vala
index e718a249..c4d0cb87 100644
--- a/src/app-window.vala
+++ b/src/app-window.vala
@@ -48,79 +48,79 @@ public class AppWindow : Hdy.ApplicationWindow
     private bool user_selected_device;
 
     [GtkChild]
-    private Hdy.HeaderBar header_bar;
+    private unowned Hdy.HeaderBar header_bar;
     [GtkChild]
-    private Gtk.Menu page_menu;
+    private unowned Gtk.Menu page_menu;
     [GtkChild]
-    private Gtk.Stack stack;
+    private unowned Gtk.Stack stack;
     [GtkChild]
-    private Hdy.StatusPage status_page;
+    private unowned Hdy.StatusPage status_page;
     [GtkChild]
-    private Gtk.Label status_secondary_label;
+    private unowned Gtk.Label status_secondary_label;
     [GtkChild]
-    private Gtk.ListStore device_model;
+    private unowned Gtk.ListStore device_model;
     [GtkChild]
-    private Gtk.Box device_buttons_box;
+    private unowned Gtk.Box device_buttons_box;
     [GtkChild]
-    private Gtk.ComboBox device_combo;
+    private unowned Gtk.ComboBox device_combo;
     [GtkChild]
-    private Gtk.Box main_vbox;
+    private unowned Gtk.Box main_vbox;
     [GtkChild]
-    private Gtk.RadioMenuItem custom_crop_menuitem;
+    private unowned Gtk.RadioMenuItem custom_crop_menuitem;
     [GtkChild]
-    private Gtk.RadioMenuItem a3_menuitem;
+    private unowned Gtk.RadioMenuItem a3_menuitem;
     [GtkChild]
-    private Gtk.RadioMenuItem a4_menuitem;
+    private unowned Gtk.RadioMenuItem a4_menuitem;
     [GtkChild]
-    private Gtk.RadioMenuItem a5_menuitem;
+    private unowned Gtk.RadioMenuItem a5_menuitem;
     [GtkChild]
-    private Gtk.RadioMenuItem a6_menuitem;
+    private unowned Gtk.RadioMenuItem a6_menuitem;
     [GtkChild]
-    private Gtk.RadioMenuItem letter_menuitem;
+    private unowned Gtk.RadioMenuItem letter_menuitem;
     [GtkChild]
-    private Gtk.RadioMenuItem legal_menuitem;
+    private unowned Gtk.RadioMenuItem legal_menuitem;
     [GtkChild]
-    private Gtk.RadioMenuItem four_by_six_menuitem;
+    private unowned Gtk.RadioMenuItem four_by_six_menuitem;
     [GtkChild]
-    private Gtk.RadioMenuItem no_crop_menuitem;
+    private unowned Gtk.RadioMenuItem no_crop_menuitem;
     [GtkChild]
-    private Gtk.MenuItem page_move_left_menuitem;
+    private unowned Gtk.MenuItem page_move_left_menuitem;
     [GtkChild]
-    private Gtk.MenuItem page_move_right_menuitem;
+    private unowned Gtk.MenuItem page_move_right_menuitem;
     [GtkChild]
-    private Gtk.MenuItem page_delete_menuitem;
+    private unowned Gtk.MenuItem page_delete_menuitem;
     [GtkChild]
-    private Gtk.MenuItem crop_rotate_menuitem;
+    private unowned Gtk.MenuItem crop_rotate_menuitem;
     [GtkChild]
-    private Gtk.MenuItem copy_to_clipboard_menuitem;
+    private unowned Gtk.MenuItem copy_to_clipboard_menuitem;
     [GtkChild]
-    private Gtk.Button save_button;
+    private unowned Gtk.Button save_button;
     [GtkChild]
-    private Gtk.Button stop_button;
+    private unowned Gtk.Button stop_button;
     [GtkChild]
-    private Gtk.Button scan_button;
+    private unowned Gtk.Button scan_button;
     [GtkChild]
-    private Gtk.ActionBar action_bar;
+    private unowned Gtk.ActionBar action_bar;
     private Gtk.ToggleButton crop_button;
     private Gtk.Button delete_button;
 
     [GtkChild]
-    private Gtk.Image scan_options_image;
+    private unowned Gtk.Image scan_options_image;
     [GtkChild]
-    private Gtk.Image scan_hint_image;
+    private unowned Gtk.Image scan_hint_image;
     [GtkChild]
-    private Gtk.RadioButton scan_single_radio;
+    private unowned Gtk.RadioButton scan_single_radio;
     [GtkChild]
-    private Gtk.RadioButton scan_adf_radio;
+    private unowned Gtk.RadioButton scan_adf_radio;
     [GtkChild]
-    private Gtk.RadioButton scan_batch_radio;
+    private unowned Gtk.RadioButton scan_batch_radio;
     [GtkChild]
-    private Gtk.RadioButton text_radio;
+    private unowned Gtk.RadioButton text_radio;
     [GtkChild]
-    private Gtk.RadioButton photo_radio;
+    private unowned Gtk.RadioButton photo_radio;
 
     [GtkChild]
-    private Gtk.MenuButton menu_button;
+    private unowned Gtk.MenuButton menu_button;
 
     private bool have_devices = false;
     private string? missing_driver = null;
diff --git a/src/authorize-dialog.vala b/src/authorize-dialog.vala
index 3b61e00f..7cb2a661 100644
--- a/src/authorize-dialog.vala
+++ b/src/authorize-dialog.vala
@@ -14,11 +14,11 @@
 private class AuthorizeDialog : Gtk.Dialog
 {
     [GtkChild]
-    private Gtk.Label authorize_label;
+    private unowned Gtk.Label authorize_label;
     [GtkChild]
-    private Gtk.Entry username_entry;
+    private unowned Gtk.Entry username_entry;
     [GtkChild]
-    private Gtk.Entry password_entry;
+    private unowned Gtk.Entry password_entry;
 
     public AuthorizeDialog (string title)
     {
diff --git a/src/preferences-dialog.vala b/src/preferences-dialog.vala
index 374fe7c3..e10e1534 100644
--- a/src/preferences-dialog.vala
+++ b/src/preferences-dialog.vala
@@ -16,41 +16,41 @@ private class PreferencesDialog : Hdy.PreferencesWindow
     private Settings settings;
 
     [GtkChild]
-    private Gtk.ComboBox text_dpi_combo;
+    private unowned Gtk.ComboBox text_dpi_combo;
     [GtkChild]
-    private Gtk.ComboBox photo_dpi_combo;
+    private unowned Gtk.ComboBox photo_dpi_combo;
     [GtkChild]
-    private Gtk.ComboBox paper_size_combo;
+    private unowned Gtk.ComboBox paper_size_combo;
     [GtkChild]
-    private Gtk.Scale brightness_scale;
+    private unowned Gtk.Scale brightness_scale;
     [GtkChild]
-    private Gtk.Scale contrast_scale;
+    private unowned Gtk.Scale contrast_scale;
     [GtkChild]
-    private Gtk.RadioButton page_delay_0s_button;
+    private unowned Gtk.RadioButton page_delay_0s_button;
     [GtkChild]
-    private Gtk.RadioButton page_delay_3s_button;
+    private unowned Gtk.RadioButton page_delay_3s_button;
     [GtkChild]
-    private Gtk.RadioButton page_delay_6s_button;
+    private unowned Gtk.RadioButton page_delay_6s_button;
     [GtkChild]
-    private Gtk.RadioButton page_delay_10s_button;
+    private unowned Gtk.RadioButton page_delay_10s_button;
     [GtkChild]
-    private Gtk.RadioButton page_delay_15s_button;
+    private unowned Gtk.RadioButton page_delay_15s_button;
     [GtkChild]
-    private Gtk.ListStore text_dpi_model;
+    private unowned Gtk.ListStore text_dpi_model;
     [GtkChild]
-    private Gtk.ListStore photo_dpi_model;
+    private unowned Gtk.ListStore photo_dpi_model;
     [GtkChild]
-    private Gtk.RadioButton front_side_button;
+    private unowned Gtk.RadioButton front_side_button;
     [GtkChild]
-    private Gtk.RadioButton back_side_button;
+    private unowned Gtk.RadioButton back_side_button;
     [GtkChild]
-    private Gtk.RadioButton both_side_button;
+    private unowned Gtk.RadioButton both_side_button;
     [GtkChild]
-    private Gtk.ListStore paper_size_model;
+    private unowned Gtk.ListStore paper_size_model;
     [GtkChild]
-    private Gtk.Adjustment brightness_adjustment;
+    private unowned Gtk.Adjustment brightness_adjustment;
     [GtkChild]
-    private Gtk.Adjustment contrast_adjustment;
+    private unowned Gtk.Adjustment contrast_adjustment;
 
     public PreferencesDialog (Settings settings)
     {