[nautilus] location-entry: Add helper for inserting prefix into completion

[António Fernandes <antoniof src gnome org>]

commit 295825bb7d380e74c20b03c50d0fc826140e50de
Author: Corey Berla <corey berla me>
Date:   Tue Jul 19 10:08:08 2022 -0700

    location-entry: Add helper for inserting prefix into completion
    
    Inserting a prefix calls insert-text which we have a signal
    attached to.  Add helper nautilus_location_entry_insert_prefix()
    to temporarily block the insert-text handler while we insert
    the prefix.

 src/nautilus-location-entry.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)
---
diff --git a/src/nautilus-location-entry.c b/src/nautilus-location-entry.c
index b3d7e3b7d..8b8481aa1 100644
--- a/src/nautilus-location-entry.c
+++ b/src/nautilus-location-entry.c
@@ -135,6 +135,20 @@ nautilus_location_entry_set_text (NautilusLocationEntry *entry,
     g_signal_handlers_unblock_by_func (delegate, G_CALLBACK (on_after_delete_text), entry);
 }
 
+static void
+nautilus_location_entry_insert_prefix (NautilusLocationEntry *entry,
+                                       GtkEntryCompletion    *completion)
+{
+    GtkEditable *delegate;
+
+    delegate = gtk_editable_get_delegate (GTK_EDITABLE (entry));
+    g_signal_handlers_block_by_func (delegate, G_CALLBACK (on_after_insert_text), entry);
+
+    gtk_entry_completion_insert_prefix (completion);
+
+    g_signal_handlers_unblock_by_func (delegate, G_CALLBACK (on_after_insert_text), entry);
+}
+
 static void
 emit_location_changed (NautilusLocationEntry *entry)
 {
@@ -566,7 +580,7 @@ update_completions_store (gpointer callback_data)
     if (priv->idle_insert_completion)
     {
         /* insert the completion */
-        gtk_entry_completion_insert_prefix (priv->completion);
+        nautilus_location_entry_insert_prefix (entry, priv->completion);
     }
 
     return FALSE;