/*
* private unsafe Task<string?> OpenFolderNfd()
* {
* // Have to run it in the thread pool to avoid blocking the main thread.
* return RunAsyncMaybe(() =>
* {
* byte* outPath;
*
* var result = sw_NFD_PickFolder(null, &outPath);
*
* return HandleNfdResult(result, outPath);
* });
* }
*/
// ReSharper disable once MemberCanBeMadeStatic.Local
private Task <string?> RunAsyncMaybe(Func <string?> action)
{
if (OperatingSystem.IsMacOS())
{
// macOS seems pretty annoying about having the file dialog opened from the main windowing thread.
// So we are forced to execute this synchronously on the main windowing thread.
// nativefiledialog doesn't provide any form of async API, so this WILL lock up half the client.
var tcs = new TaskCompletionSource <string?>();
_clyde.RunOnWindowThread(() => tcs.SetResult(action()));
return(tcs.Task);
}
else
{
// Luckily, GTK Linux and COM Windows are both happily threaded. Yay!
// * Actual attempts to have multiple file dialogs up at the same time, and the resulting crashes,
// have shown that at least for GTK+ (Linux), just because it can handle being on any thread doesn't mean it handle being on two at the same time.
// Testing system was Ubuntu 20.04.
// COM on Windows might handle this, but honestly, who exactly wants to risk it?
// In particular this could very well be an swnfd issue.
return(Task.Run(() =>
{
lock (this)
{
return action();
}
}));
}
}
