[gtksourceview] map: react to changes in GtkSourceView:right-margin-position

[Christian Hergert <chergert src gnome org>]

commit 3855e436be9d16bf856a2664788389dc2f58d3aa
Author: Christian Hergert <chergert redhat com>
Date:   Wed Apr 6 11:07:05 2022 -0700

    map: react to changes in GtkSourceView:right-margin-position
    
    This ensures we go through a resize-cycle when the right-margin-position
    is updated in the linked GtkSourceView. Otherwise our size will not update
    with the linked view.

 gtksourceview/gtksourcemap.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)
---
diff --git a/gtksourceview/gtksourcemap.c b/gtksourceview/gtksourcemap.c
index 50b4b982..998ba843 100644
--- a/gtksourceview/gtksourcemap.c
+++ b/gtksourceview/gtksourcemap.c
@@ -187,8 +187,9 @@ typedef struct
        GBinding *indent_width_binding;
        GBinding *tab_width_binding;
 
-       /* Our signal handler for buffer changes */
+       /* Our signal handler for view changes */
        gulong view_notify_buffer_handler;
+       gulong view_notify_right_margin_position_handler;
        gulong view_vadj_value_changed_handler;
        gulong view_vadj_notify_upper_handler;
 
@@ -767,6 +768,13 @@ connect_view (GtkSourceMap  *map,
                                         G_CONNECT_SWAPPED);
        view_notify_buffer (map, NULL, view);
 
+       priv->view_notify_right_margin_position_handler =
+               g_signal_connect_object (view,
+                                        "notify::right-margin-position",
+                                        G_CALLBACK (gtk_widget_queue_resize),
+                                        map,
+                                        G_CONNECT_SWAPPED);
+
        priv->view_vadj_value_changed_handler =
                g_signal_connect_object (vadj,
                                         "value-changed",
@@ -830,11 +838,8 @@ disconnect_view (GtkSourceMap *map)
                priv->tab_width_binding = NULL;
        }
 
-       if (priv->view_notify_buffer_handler != 0)
-       {
-               g_signal_handler_disconnect (priv->view, priv->view_notify_buffer_handler);
-               priv->view_notify_buffer_handler = 0;
-       }
+       g_clear_signal_handler (&priv->view_notify_buffer_handler, priv->view);
+       g_clear_signal_handler (&priv->view_notify_right_margin_position_handler, priv->view);
 
        vadj = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (priv->view));
        if (vadj != NULL)