1 files changed, 19 insertions, 1 deletions

diff --git a/src/ui/root.h b/src/ui/root.h
index a3e595ba..fcb5b1b0 100644
--- a/src/ui/root.h
+++ b/src/ui/root.h
@@ -1,12 +1,30 @@
 #pragma once
 
 #include "widget.h"
+#include <the_Foundation/ptrset.h>
+
+iDeclareType(RootData)
+    
+/* TODO: Rename to Root, include `iWidget *root` as well. */
+struct Impl_RootData {
+    iWidget *  hover;
+    iWidget *  mouseGrab;
+    iWidget *  focus;
+    iPtrArray *onTop; /* order is important; last one is topmost */
+    iPtrSet *  pendingDestruction;
+};
+
+/*----------------------------------------------------------------------------------------------*/
 
 iWidget *   createUserInterface_Root            (void);
 
-void        setCurrent_Root                     (iWidget *root);
+void        setCurrent_Root                     (iWidget *root, iRootData *rootData);
 iWidget *   get_Root                            (void);
+iRootData * data_Root                           (void);
 
+iPtrArray * onTop_RootData                      (void);
+void        destroyPending_RootData             (iRootData *);
+    
 void        updateMetrics_Root                  (iWidget *);
 void        updatePadding_Root                  (iWidget *); /* TODO: is part of metrics? */
 void        dismissPortraitPhoneSidebars_Root   (iWidget *);