Add parent arg to QFileDialog::getOpenFileContent and saveFileContent

This change updates getOpenFileContent to provide a parent when the
non-WASM fallback to a QFileDialog is created, which avoids issues
where this call is made inside another application. Specifically,
if a QDialog is created lacking a parent to the main window, it will
prevent interaction with that dialog. This patch addresses that problem
with window modality.

This change also updates saveFileContent to provide a parent for
the fallback mechanism, so that both static APIs that interact
with WASM/non-WASM dialogs have comparable behavior.

The new parent argument is updated in the documentation. Documentation
is clarified in terms of usage outside Qt for WebAssembly.

[ChangeLog][QtWidgets][QFileDialog] Adds an overload to the
static methods getOpenFileContent and saveFileContent with a
new parent argument which always no-ops in the WASM environment.

Fixes: QTBUG-118396
Pick-to: 6.7 6.6 6.5
Change-Id: Ic59aee386631172d4a29b42fe11e5af318474a1d
Reviewed-by: Venugopal Shivashankar <Venugopal.Shivashankar@qt.io>

1 files changed, 20 insertions, 1 deletions

diff --git a/src/widgets/compat/removed_api.cpp b/src/widgets/compat/removed_api.cpp
index 691cc2cc7f..5fcbdba47b 100644
--- a/src/widgets/compat/removed_api.cpp
+++ b/src/widgets/compat/removed_api.cpp
@@ -78,7 +78,26 @@ QAction *QMenuBar::addAction(const QString &text, const QObject *receiver, const
 }
 #endif
 
+#endif // QT_WIDGETS_REMOVED_SINCE(6, 3)
+
+#if QT_WIDGETS_REMOVED_SINCE(6, 7)
+
+
+#if QT_CONFIG(filedialog)
+#include "qfiledialog.h"
+
+void QFileDialog::getOpenFileContent(const QString &nameFilter, const std::function<void(const QString &, const QByteArray &)> &fileOpenCompleted)
+{
+    QFileDialog::getOpenFileContent(nameFilter, fileOpenCompleted, nullptr);
+}
+
+void QFileDialog::saveFileContent(const QByteArray &fileContent, const QString &fileNameHint)
+{
+    saveFileContent(fileContent, fileNameHint, nullptr);
+}
+#endif
+
 // #include <qotherheader.h>
 // // implement removed functions from qotherheader.h
 
-#endif // QT_WIDGETS_REMOVED_SINCE(6, 3)
+#endif // QT_WIDGETS_REMOVED_SINCE(6, 7)