private async Task <PPError> OpenAsyncCore(long expected_size, MessageLoop openLoop = null)
{
var tcs = new TaskCompletionSource <PPError>();
EventHandler <PPError> handler = (s, e) => { tcs.TrySetResult(e); };
try
{
HandleOpen += handler;
if (MessageLoop == null && openLoop == null)
{
Open(expected_size);
}
else
{
Action <PPError> action = new Action <PPError>((e) =>
{
var result = (PPError)PPBFileSystem.Open(this, expected_size,
new BlockUntilComplete()
);
tcs.TrySetResult(result);
}
);
InvokeHelper(action, openLoop);
}
return(await tcs.Task);
}
catch (Exception exc)
{
Console.WriteLine(exc.Message);
tcs.SetException(exc);
return(PPError.Aborted);
}
finally
{
HandleOpen -= handler;
}
}
/// <summary> /// Open() opens the file system. A file system must be opened before running /// any other operation on it. /// </summary> /// <param name="expected_size"> /// The expected size of the file system.Note that /// this does not request quota; to do that, you must either invoke /// requestQuota from JavaScript: /// http://www.html5rocks.com/en/tutorials/file/filesystem/#toc-requesting-quota /// or set the unlimitedStorage permission for Chrome Web Store apps: /// http://code.google.com/chrome/extensions/manifest.html#permissions /// </param> /// <returns>A PPError code</returns> public PPError Open(long expected_size) => (PPError)PPBFileSystem.Open(this, expected_size, new CompletionCallback(OnOpen));
public FileSystem(Instance instance, FileSystemType type)
{
handle = PPBFileSystem.Create(instance, (PPFileSystemType)type);
}