1 files changed, 32 insertions, 0 deletions
diff --git a/src/core/display.c b/src/core/display.c
index e7dd4534b..d09f119ff 100644
--- a/src/core/display.c
+++ b/src/core/display.c
@@ -3269,3 +3269,35 @@ meta_display_notify_pad_group_switch (MetaDisplay        *display,
 
   g_string_free (message, TRUE);
 }
+
+MetaWindow *
+meta_display_get_window_from_id (MetaDisplay *display,
+                                 uint64_t     window_id)
+{
+  g_autoptr (GSList) windows = NULL;
+  GSList *l;
+
+  windows = meta_display_list_windows (display, META_LIST_DEFAULT);
+  for (l = windows; l; l = l->next)
+    {
+      MetaWindow *window = l->data;
+
+      if (window->id == window_id)
+        return window;
+    }
+
+  return NULL;
+}
+
+uint64_t
+meta_display_generate_window_id (MetaDisplay *display)
+{
+  static uint64_t base_window_id;
+  static uint64_t last_window_id;
+
+  if (!base_window_id)
+    base_window_id = g_random_int () + 1;
+
+  /* We can overflow here, that's fine */
+  return (base_window_id + last_window_id++);
+}