FileChooser portal: set current_file only when file already exists

According to xdg-desktop-portal documentation, current_file should be set
only when such a file already exists and xdg-desktop-portal-gnome enforces
this by being totally broken when current_file is set to a non-existent path

Pick-to: 6.4 6.3 6.2
Change-Id: Ie3c80a7c6fd0cf23eea88ddec2149f5904c63394
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/src/plugins/platformthemes/xdgdesktopportal/qxdgdesktopportalfiledialog.cpp b/src/plugins/platformthemes/xdgdesktopportal/qxdgdesktopportalfiledialog.cpp
index 2ef591a591..ec3872f174 100644
--- a/src/plugins/platformthemes/xdgdesktopportal/qxdgdesktopportalfiledialog.cpp
+++ b/src/plugins/platformthemes/xdgdesktopportal/qxdgdesktopportalfiledialog.cpp
@@ -175,9 +175,12 @@ void QXdgDesktopPortalFileDialog::openPortal(Qt::WindowFlags windowFlags, Qt::Wi
 
         if (!d->selectedFiles.isEmpty()) {
             // current_file for the file to be pre-selected, current_name for the file name to be pre-filled
-            // current_file accepts absolute path while current_name accepts just file name
-            options.insert("current_file"_L1, QFile::encodeName(d->selectedFiles.first()).append('\0'));
-            options.insert("current_name"_L1, QFileInfo(d->selectedFiles.first()).fileName());
+            // current_file accepts absolute path and requires the file to exist
+            // while current_name accepts just file name
+            QFileInfo selectedFileInfo(d->selectedFiles.first());
+            if (selectedFileInfo.exists())
+                options.insert("current_file"_L1, QFile::encodeName(d->selectedFiles.first()).append('\0'));
+            options.insert("current_name"_L1, selectedFileInfo.fileName());
         }
     }