Utils: Make injected default dialog parent better re-usable

... and use it for CheckableMessageBox. This enables using
the proper parent e.g. in upcoming changes to ExtensionSystem.

Change-Id: Ib0e52cbd3e73dc628955918e3f443ff65cccb189
Reviewed-by: Eike Ziller <[email protected]>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/libs/utils/guiutils.cpp b/src/libs/utils/guiutils.cpp
index 17cc9053002..d7d9cb5f84f 100644
--- a/src/libs/utils/guiutils.cpp
+++ b/src/libs/utils/guiutils.cpp
@@ -46,4 +46,16 @@ void QTCREATOR_UTILS_EXPORT setWheelScrollingWithoutFocusBlocked(QWidget *widget
         widget->setFocusPolicy(Qt::StrongFocus);
 }
 
+static QWidget *(*s_dialogParentGetter)() = nullptr;
+
+void setDialogParentGetter(QWidget *(*getter)())
+{
+    s_dialogParentGetter = getter;
+}
+
+QWidget *dialogParent(QWidget *parent)
+{
+    return parent ? parent : s_dialogParentGetter ? s_dialogParentGetter() : nullptr;
+}
+
 } // namespace Utils