refs #640, find COverlayMessagesFrame in widget hierarchy

src/blackgui/guiutility.cpp

@@ -8,6 +8,7 @@
  */
 
 #include "guiutility.h"
+#include "overlaymessagesframe.h"
 #include "blackcore/corefacade.h"
 #include "blackcore/cookiemanager.h"
 #include "blackmisc/filelogger.h"
@@ -160,6 +161,23 @@ namespace BlackGui
         return typeId;
     }
 
+    COverlayMessagesFrame *CGuiUtility::nextOverlayMessageFrame(QWidget *widget, int maxLevels)
+    {
+        if (!widget || maxLevels < 1) { return nullptr; }
+        COverlayMessagesFrame *o = qobject_cast<COverlayMessagesFrame *> (widget);
+        if (o) { return o; }
+        int cl = 0;
+        QWidget *cw = widget->parentWidget();
+        while (cl < maxLevels && cw)
+        {
+            o = qobject_cast<COverlayMessagesFrame *> (cw);
+            if (o) { return o; }
+            cl++;
+            cw = cw->parentWidget();
+        }
+        return nullptr;
+    }
+
     const QString &CGuiUtility::swiftJsonDragAndDropMimeType()
     {
         static const QString m("text/json/swift");

src/blackgui/guiutility.h

@@ -22,6 +22,8 @@
 
 namespace BlackGui
 {
+    class COverlayMessagesFrame;
+
     //! GUI utilities
     class BLACKGUI_EXPORT CGuiUtility
     {
@@ -65,6 +67,9 @@ namespace BlackGui
         //! Meta type id from dropped data
         static int metaTypeIdFromSwiftDragAndDropData(const QMimeData *mime);
 
+        //! Find next BlackGui::COverlayMessages QFrame
+        static COverlayMessagesFrame *nextOverlayMessageFrame(QWidget *widget, int maxLevels = 10);
+
         //! Metatype
         static const QString &swiftJsonDragAndDropMimeType();