[epiphany] Highlight active tab in mobile page view

[Jan-Michael Brummer <jbrummer src gnome org>]

commit dce8c0b52dc5c2b4875ad8ae121f731b760400f4
Author: Jan-Michael Brummer <jan brummer tabos org>
Date:   Mon May 11 14:17:18 2020 +0200

    Highlight active tab in mobile page view
    
    Fixes: https://gitlab.gnome.org/GNOME/epiphany/-/issues/760

 src/ephy-pages-view.c | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)
---
diff --git a/src/ephy-pages-view.c b/src/ephy-pages-view.c
index 1a02eac89..a565f3b7c 100644
--- a/src/ephy-pages-view.c
+++ b/src/ephy-pages-view.c
@@ -111,6 +111,24 @@ row_closed_cb (EphyPagesView *self,
                          embed, window);
 }
 
+
+static void
+current_page_changed (EphyPagesView *self)
+{
+  GtkListBoxRow *current_row, *new_row;
+  gint current_page;
+
+  g_assert (EPHY_IS_PAGES_VIEW (self));
+
+  current_row = gtk_list_box_get_selected_row (self->list_box);
+  current_page = gtk_notebook_get_current_page (GTK_NOTEBOOK (self->notebook));
+  if (current_row && gtk_list_box_row_get_index (current_row) == current_page)
+    return;
+
+  new_row = gtk_list_box_get_row_at_index (self->list_box, current_page);
+  gtk_list_box_select_row (self->list_box, new_row);
+}
+
 static void
 items_changed_cb (EphyPagesView *self,
                   gint           position,
@@ -128,6 +146,8 @@ items_changed_cb (EphyPagesView *self,
   }
 
   g_list_store_splice (self->list_store, position, removed, (gpointer)items, added);
+
+  current_page_changed (self);
 }
 
 static void
@@ -188,8 +208,6 @@ ephy_pages_view_init (EphyPagesView *self)
 
   self->list_store = g_list_store_new (EPHY_TYPE_PAGE_ROW);
 
-  gtk_list_box_set_selection_mode (self->list_box, GTK_SELECTION_NONE);
-
   ephy_pages_view_set_adaptive_mode (self, EPHY_ADAPTIVE_MODE_NARROW);
   gtk_list_box_bind_model (self->list_box,
                            G_LIST_MODEL (self->list_store),