1 files changed, 121 insertions, 0 deletions
diff --git a/subprojects/libhandy/glade/glade-hdy-utils.c b/subprojects/libhandy/glade/glade-hdy-utils.c
new file mode 100644
index 0000000..81b8ae5
--- /dev/null
+++ b/subprojects/libhandy/glade/glade-hdy-utils.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2020 Alexander Mikhaylenko <alexm@gnome.org>
+ *
+ * SPDX-License-Identifier: LGPL-2.1+
+ */
+
+#include <config.h>
+#include <glib/gi18n-lib.h>
+
+#include "glade-hdy-utils.h"
+
+#include <gladeui/glade.h>
+
+void
+glade_hdy_init (const gchar *name)
+{
+  g_assert (strcmp (name, "libhandy") == 0);
+
+  gtk_init (NULL, NULL);
+  hdy_init ();
+}
+
+/* This function has been copied and modified from:
+ * glade-gtk-list-box.c - GladeWidgetAdaptor for GtkListBox widget
+ *
+ * Copyright (C) 2013 Kalev Lember
+ *
+ * Authors:
+ *      Kalev Lember <kalevlember@gmail.com>
+ */
+void
+glade_hdy_sync_child_positions (GtkContainer *container)
+{
+  g_autoptr (GList) children = NULL;
+  GList *l;
+  gint position;
+  static gboolean recursion = FALSE;
+
+  /* Avoid feedback loop */
+  if (recursion)
+    return;
+
+  children = gtk_container_get_children (container);
+
+  position = 0;
+  for (l = children; l; l = l->next) {
+    gint old_position;
+
+    glade_widget_pack_property_get (glade_widget_get_from_gobject (l->data),
+                                    "position", &old_position);
+    if (position != old_position) {
+      /* Update glade with the new value */
+      recursion = TRUE;
+      glade_widget_pack_property_set (glade_widget_get_from_gobject (l->data),
+                                      "position", position);
+      recursion = FALSE;
+    }
+
+    position++;
+  }
+}
+
+gint
+glade_hdy_get_child_index (GtkContainer *container,
+                           GtkWidget    *child)
+{
+  g_autoptr (GList) children = gtk_container_get_children (container);
+
+  return g_list_index (children, child);
+}
+
+void
+glade_hdy_reorder_child (GtkContainer *container,
+                         GtkWidget    *child,
+                         gint          index)
+{
+  gint old_index = glade_hdy_get_child_index (container, child);
+  gint i = 0, n;
+  g_autoptr (GList) children = NULL;
+  g_autoptr (GList) removed_children = NULL;
+  GList *l;
+
+  if (old_index == index)
+    return;
+
+  gtk_container_remove (container, g_object_ref (child));
+
+  children = gtk_container_get_children (container);
+  n = g_list_length (children);
+
+  children = g_list_reverse (children);
+  l = children;
+
+  if (index > old_index)
+    n--;
+
+  for (i = n - 1; i >= index; i--) {
+    GtkWidget *last_child = l->data;
+
+    gtk_container_remove (container, g_object_ref (last_child));
+    l = l->next;
+
+    removed_children = g_list_prepend (removed_children, last_child);
+  }
+
+  removed_children = g_list_prepend (removed_children, child);
+
+  for (l = removed_children; l; l = l->next) {
+    gtk_container_add (container, l->data);
+    g_object_unref (l->data);
+  }
+}
+
+GtkWidget *
+glade_hdy_get_nth_child (GtkContainer *container,
+                         gint          n)
+{
+  g_autoptr (GList) children = gtk_container_get_children (container);
+
+  return g_list_nth_data (children, n);
+}