private unsafe Task <string> OpenFileNfd(FileDialogFilters filters)
{
// Have to run it in the thread pool to avoid blocking the main thread.
return(RunAsyncMaybe(() =>
{
var filterPtr = IntPtr.Zero;
byte *outPath;
if (filters != null)
{
var filterString = string.Join(';', filters.Groups.Select(f => string.Join(',', f.Extensions)));
filterPtr = Marshal.StringToCoTaskMemUTF8(filterString);
}
sw_nfdresult result;
try
{
result = sw_NFD_OpenDialog((byte *)filterPtr, null, &outPath);
}
finally
{
if (filterPtr != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(filterPtr);
}
}
return HandleNfdResult(result, outPath);
}));
}
public async Task <string> OpenFile(FileDialogFilters filters = null)
{
#if LINUX
if (await IsKDialogAvailable())
{
return(await OpenFileKDialog(filters));
}
#endif
return(await OpenFileNfd(filters));
}
private static Task <string> OpenFileKDialog(FileDialogFilters filters)
{
var sb = new StringBuilder();
if (filters != null && filters.Groups.Count != 0)
{
var first = true;
foreach (var group in filters.Groups)
{
if (!first)
{
sb.Append('|');
}
foreach (var extension in group.Extensions)
{
sb.AppendFormat(".{0} ", extension);
}
sb.Append('(');
foreach (var extension in group.Extensions)
{
sb.AppendFormat("*.{0} ", extension);
}
sb.Append(')');
first = false;
}
sb.Append("| All Files (*)");
}
return(RunKDialog("--getopenfilename", Environment.GetEnvironmentVariable("HOME"), sb.ToString()));
}
public Task <string> OpenFile(FileDialogFilters filters = null)
{
return(Task.FromResult <string>(null));
}