1 files changed, 42 insertions, 0 deletions
diff --git a/lib/dir_exist_async.h b/lib/dir_exist_async.h
new file mode 100644
index 00000000..72741ee2
--- /dev/null
+++ b/lib/dir_exist_async.h
@@ -0,0 +1,42 @@
+// **************************************************************************
+// * This file is part of the FreeFileSync project. It is distributed under *
+// * GNU General Public License: http://www.gnu.org/licenses/gpl.html       *
+// * Copyright (C) 2008-2011 ZenJu (zhnmju123 AT gmx.de)                    *
+// **************************************************************************
+
+#ifndef DIR_EXIST_HEADER_08173281673432158067342132467183267
+#define DIR_EXIST_HEADER_08173281673432158067342132467183267
+
+#include <zen/thread.h>
+#include <zen/file_handling.h>
+#include "status_handler.h"
+#include <zen/file_error.h>
+#include "resolve_path.h"
+
+//dir existence checking may hang for non-existent network drives => run asynchronously and update UI!
+namespace
+{
+bool dirExistsUpdating(const Zstring& dirname, bool allowUserInteraction, ProcessCallback& procCallback)
+{
+    using namespace zen;
+
+    std::wstring statusText = _("Searching for directory %x...");
+    replace(statusText, L"%x", std::wstring(L"\"") + dirname + L"\"", false);
+    procCallback.reportStatus(statusText);
+
+    auto ft = async([=]() -> bool
+    {
+#ifdef FFS_WIN
+        //1. login to network share, if necessary
+        loginNetworkShare(dirname, allowUserInteraction);
+#endif
+        //2. check dir existence
+        return zen::dirExists(dirname);
+    });
+    while (!ft.timed_wait(boost::posix_time::milliseconds(UI_UPDATE_INTERVAL)))
+        procCallback.requestUiRefresh(); //may throw!
+    return ft.get();
+}
+}
+
+#endif //DIR_EXIST_HEADER_08173281673432158067342132467183267