private void UpdateStatusFromJob(FtpJob job)
{
switch (job.Status)
{
case FtpJob.JobStatus.Cancelled:
Status = "已取消";
ShowProgress = false;
break;
case FtpJob.JobStatus.Faulted:
var message = job.Exception?.Message ?? "无错误信息。";
if (job.Exception?.InnerException is FluentFTP.FtpCommandException cmdEx)
{
if (cmdEx.CompletionCode == "550")
{
message = "没有访问权限。";
}
}
Status = string.Format("出错：{0}", message);
ShowProgress = false;
break;
case FtpJob.JobStatus.Completed:
Status = string.Format("已完成");
ShowProgress = false;
break;
case FtpJob.JobStatus.Created:
Status = string.Empty;
ShowProgress = true;
break;
}
}
public FtpJobViewModel(FtpJob job, CoreDispatcher dispatcher)
{
this.job = job;
Name = job.Name;
if (double.IsNaN(job.Progress))
{
Progress = 0;
IsProgressIndeterminate = true;
}
else
{
Progress = job.Progress;
IsProgressIndeterminate = false;
}
UpdateStatusFromJob(job);
{
job.ProgressChanged += async(sender, e) =>
{
await dispatcher.RunIdleAsync(e1 =>
{
if (double.IsNaN(job.Progress))
{
IsProgressIndeterminate = true;
}
else
{
IsProgressIndeterminate = false;
Progress = job.Progress;
}
});
};
}
{
job.StatusChanged += async(sender, e) =>
{
await dispatcher.RunIdleAsync(e1 =>
{
UpdateStatusFromJob(job);
});
};
}
}
public void AddDownloadFile(FluentFTP.FtpClient client, string remotePath, StorageFile localFile, Action callBack)
{
client = CloneFtpClient(client);
FtpJob job = new FtpJob();
var cts = new CancellationTokenSource();
var progress = new Progress <double>(x =>
{
job.Progress = x;
});
job.Task = DownloadFileAsync(client, remotePath, localFile, cts.Token, progress).ContinueWith(x =>
{
if (!cts.IsCancellationRequested)
{
job.Progress = double.NaN;
try
{
callBack();
}
catch { }
}
if (x.IsCanceled)
{
job.Status = FtpJob.JobStatus.Cancelled;
}
else if (x.IsFaulted)
{
job.Status = FtpJob.JobStatus.Faulted;
}
else if (x.IsCompleted)
{
job.Status = FtpJob.JobStatus.Completed;
}
job.Exception = x.Exception;
});
job.Name = string.Format("下载{0}", Path.GetFileName(remotePath));
job.CancellationTokenSource = cts;
_jobs.Add(job);
}