Ref T554, find parent dialog

src/blackgui/guiutility.cpp

@@ -634,4 +634,15 @@ namespace BlackGui
 
         return QStringLiteral("<img src=\"%1\" height=%2>").arg(p, QString::number(height));
     }
+
+    QDialog *CGuiUtility::findParentDialog(QWidget *widget)
+    {
+        if (CGuiUtility::isDialog(widget)) { return qobject_cast<QDialog *>(widget); }
+        while (widget->parent())
+        {
+            widget = widget->parentWidget();
+            if (CGuiUtility::isDialog(widget)) { return qobject_cast<QDialog *>(widget); }
+        }
+        return nullptr;
+    }
 } // ns

src/blackgui/guiutility.h

@@ -31,6 +31,7 @@ class QLayout;
 class QMimeData;
 class QLineEdit;
 class QTabWidget;
+class QDialog;
 class QGraphicsOpacityEffect;
 class QAbstractItemModel;
 
@@ -233,6 +234,9 @@ namespace BlackGui
         //! CIcon as simple HTML image code segment
         static QString asSimpleHtmlImageHeight(const BlackMisc::CIcon &icon, int height = -1);
 
+        //! Find parent dialog if there is any, otherwise null
+        static QDialog *findParentDialog(QWidget *widget);
+
     private:
         //! No constructor, use static functions only
         CGuiUtility() {}