1 files changed, 63 insertions, 0 deletions
diff --git a/vcl/qt5/QtInstanceMessageDialog.cxx b/vcl/qt5/QtInstanceMessageDialog.cxx
index 7e505aff7cd0..cbda4c6ae0dd 100644
--- a/vcl/qt5/QtInstanceMessageDialog.cxx
+++ b/vcl/qt5/QtInstanceMessageDialog.cxx
@@ -8,6 +8,7 @@
  */
 
 #include <QtInstanceMessageDialog.hxx>
+#include <QtInstanceMessageDialog.moc>
 
 #include <QtWidgets/QPushButton>
 
@@ -20,7 +21,9 @@ const char* const PROPERTY_VCL_RESPONSE_CODE = "response-code";
 QtInstanceMessageDialog::QtInstanceMessageDialog(QMessageBox* pMessageDialog)
     : QtInstanceDialog(pMessageDialog)
     , m_pMessageDialog(pMessageDialog)
+    , m_aRunAsyncFunc(nullptr)
 {
+    assert(m_pMessageDialog);
 }
 
 void QtInstanceMessageDialog::set_primary_text(const rtl::OUString& rText)
@@ -81,4 +84,64 @@ int QtInstanceMessageDialog::run()
     return pClickedButton->property(PROPERTY_VCL_RESPONSE_CODE).toInt();
 }
 
+bool QtInstanceMessageDialog::runAsync(const std::shared_ptr<weld::DialogController>& rxOwner,
+                                       const std::function<void(sal_Int32)>& func)
+{
+    assert(m_pMessageDialog);
+
+    m_xRunAsyncDialogController = rxOwner;
+    m_aRunAsyncFunc = func;
+    connect(m_pMessageDialog, &QDialog::finished, this, &QtInstanceMessageDialog::dialogFinished);
+    m_pMessageDialog->open();
+
+    return true;
+}
+
+bool QtInstanceMessageDialog::runAsync(std::shared_ptr<Dialog> const& rxSelf,
+                                       const std::function<void(sal_Int32)>& func)
+{
+    assert(m_pMessageDialog);
+    assert(rxSelf.get() == this);
+
+    m_xRunAsyncDialog = rxSelf;
+    m_aRunAsyncFunc = func;
+    connect(m_pMessageDialog, &QDialog::finished, this, &QtInstanceMessageDialog::dialogFinished);
+    m_pMessageDialog->open();
+
+    return true;
+}
+
+void QtInstanceMessageDialog::response(int nResponse)
+{
+    assert(m_pMessageDialog);
+    m_pMessageDialog->done(nResponse);
+}
+
+void QtInstanceMessageDialog::dialogFinished(int nResult)
+{
+    assert(m_aRunAsyncFunc);
+
+    disconnect(m_pMessageDialog, &QDialog::finished, this,
+               &QtInstanceMessageDialog::dialogFinished);
+
+    // use local variables for these, as members might have got de-allocated by the time they're reset
+    std::shared_ptr<weld::Dialog> xRunAsyncDialog = m_xRunAsyncDialog;
+    std::shared_ptr<weld::DialogController> xRunAsyncDialogController = m_xRunAsyncDialogController;
+    std::function<void(sal_Int32)> aFunc = m_aRunAsyncFunc;
+    m_aRunAsyncFunc = nullptr;
+    m_xRunAsyncDialogController.reset();
+    m_xRunAsyncDialog.reset();
+
+    // if a button was clicked, use its response code, otherwise the passed one
+    int nRet = nResult;
+    if (QAbstractButton* pClickedButton = m_pMessageDialog->clickedButton())
+        nRet = pClickedButton->property(PROPERTY_VCL_RESPONSE_CODE).toInt();
+
+    SolarMutexGuard g;
+    aFunc(nRet);
+
+    xRunAsyncDialogController.reset();
+    xRunAsyncDialog.reset();
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */