[gtksourceview] Don't use gtk_source_completion_info_{get, set}_widget()

[SÃbastien Wilmet <swilmet src gnome org>]

commit 8a8aa2b0fd1c0f4e1c50d8e2dc0a5e82d99ed33c
Author: SÃbastien Wilmet <swilmet gnome org>
Date:   Sat Jan 26 21:17:06 2013 +0100

    Don't use gtk_source_completion_info_{get,set}_widget()
    
    It's less convenient to use the GTK+ functions, but it's better to have
    a smaller API.

 gtksourceview/gtksourcecompletion.c |   27 ++++++++++++++++++++++-----
 1 files changed, 22 insertions(+), 5 deletions(-)
---
diff --git a/gtksourceview/gtksourcecompletion.c b/gtksourceview/gtksourcecompletion.c
index 128e96f..ab9130b 100644
--- a/gtksourceview/gtksourcecompletion.c
+++ b/gtksourceview/gtksourcecompletion.c
@@ -980,6 +980,25 @@ row_activated_cb (GtkTreeView         *tree_view,
 }
 
 static void
+replace_info_widget (GtkSourceCompletionInfo *info,
+		     GtkWidget               *new_widget)
+{
+	GtkWidget *cur_widget = gtk_bin_get_child (GTK_BIN (info));
+
+	if (cur_widget == new_widget)
+	{
+		return;
+	}
+
+	if (cur_widget != NULL)
+	{
+		gtk_container_remove (GTK_CONTAINER (info), cur_widget);
+	}
+
+	gtk_container_add (GTK_CONTAINER (info), new_widget);
+}
+
+static void
 update_proposal_info_real (GtkSourceCompletion         *completion,
                            GtkSourceCompletionProvider *provider,
                            GtkSourceCompletionProposal *proposal)
@@ -996,8 +1015,7 @@ update_proposal_info_real (GtkSourceCompletion         *completion,
 		info_widget = completion->priv->default_info;
 		gtk_label_set_markup (GTK_LABEL (info_widget), _("No extra information available"));
 
-		gtk_source_completion_info_set_widget (info_window,
-		                                       info_widget);
+		replace_info_widget (info_window, info_widget);
 
 		gtk_widget_hide (GTK_WIDGET (info_window));
 		return;
@@ -1034,7 +1052,7 @@ update_proposal_info_real (GtkSourceCompletion         *completion,
 		}
 	}
 
-	gtk_source_completion_info_set_widget (info_window, info_widget);
+	replace_info_widget (info_window, info_widget);
 
 	if (prov_update_info)
 	{
@@ -3021,8 +3039,7 @@ initialize_ui (GtkSourceCompletion *completion)
 
 	gtk_widget_show (completion->priv->default_info);
 
-	gtk_source_completion_info_set_widget (GTK_SOURCE_COMPLETION_INFO (completion->priv->info_window),
-	                                       completion->priv->default_info);
+	gtk_container_add (GTK_CONTAINER (completion->priv->info_window), completion->priv->default_info);
 
 	/* Connect signals */
 	g_signal_connect_after (completion->priv->window,