[balsa/wip/gtk4: 207/351] libalsa-progress: Use gtk_container_foreach()

[Peter Bloomfield <peterb src gnome org>]

commit 56766adbd9fcd5f7616d7e0b95a9a2f52e6e757d
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Mon Mar 5 19:06:16 2018 -0500

    libalsa-progress: Use gtk_container_foreach()
    
    …instead of allocating a GList in gtk_container_get_children and
    later freeing it.

 libbalsa/libbalsa-progress.c |   32 ++++++++++++++++----------------
 1 files changed, 16 insertions(+), 16 deletions(-)
---
diff --git a/libbalsa/libbalsa-progress.c b/libbalsa/libbalsa-progress.c
index caeb6f8..881d6df 100644
--- a/libbalsa/libbalsa-progress.c
+++ b/libbalsa/libbalsa-progress.c
@@ -249,28 +249,28 @@ progress_data_destroy_cb(GtkWidget G_GNUC_UNUSED *widget,
        libbalsa_clear_source_id(&progress_data->fadeout_id);
 }
 
+typedef struct {
+    const gchar            *id;
+    progress_widget_data_t *data;
+} find_progress_data_info;
+
+static void
+find_progress_data_func(GtkWidget               * child,
+                        find_progress_data_info * info)
+{
+    if (info->data == NULL && strcmp(gtk_widget_get_name(child), info->id) == 0)
+        info->data = g_object_get_data(G_OBJECT(child), "data");
+}
 
 static progress_widget_data_t *
 find_progress_data_by_name(GtkContainer *container,
                                                   const gchar  *id)
 {
-       GList *children;
-       GList *this_child;
-       progress_widget_data_t *data;
-
-       children = gtk_container_get_children(container);
-       data = NULL;
-       this_child = children;
-       while ((data == NULL) && (this_child != NULL)) {
-               if (strcmp(gtk_widget_get_name(GTK_WIDGET(this_child->data)), id) == 0) {
-                       data = g_object_get_data(G_OBJECT(this_child->data), "data");
-               } else {
-                       this_child = this_child->next;
-               }
-       }
-       g_list_free(children);
+        find_progress_data_info info = {id, NULL};
+
+        gtk_container_foreach(container, (GtkCallback) find_progress_data_func, &info);
 
-       return data;
+        return info.data;
 }