Add basic z-order for Windows.

1 files changed, 7 insertions, 1 deletions

diff --git a/Widgets/Window.h b/Widgets/Window.h
index d81599e656..0c3658e052 100644
--- a/Widgets/Window.h
+++ b/Widgets/Window.h
@@ -4,11 +4,12 @@
 #include "Rect.h"
 #include "GraphicsBitmap.h"
 #include <AK/AKString.h>
+#include <AK/InlineLinkedList.h>
 #include <AK/WeakPtr.h>
 
 class Widget;
 
-class Window final : public Object {
+class Window final : public Object, public InlineLinkedListNode<Window> {
 public:
     explicit Window(Object* parent = nullptr);
     virtual ~Window() override;
@@ -55,6 +56,11 @@ public:
 
     void did_paint();
 
+    // For InlineLinkedList.
+    // FIXME: Maybe make a ListHashSet and then WindowManager can just use that.
+    Window* m_next { nullptr };
+    Window* m_prev { nullptr };
+
 private:
     String m_title;
     Rect m_rect;