/// <summary>
/// Private helper to fire <see cref="UpdateRequested"/>.
/// </summary>
private Task FireUpdateRequested()
{
RequestUpdateDescriptorEventArgs args = new RequestUpdateDescriptorEventArgs(this);
UpdateRequested?.Invoke(this, args);
return(args.DeferAsync());
}
/// <summary>
/// Intended to be registered as a handler for <see cref="StoredFileDescriptor.UpdateRequested"/>.
/// </summary>
/// <param name="sender">The descriptor being updated.</param>
/// <param name="args">EventArgs used to request the file to update with.</param>
private async void UpdateRequestedHandler(StoredFileDescriptor sender, RequestUpdateDescriptorEventArgs args)
{
if (!sender.IsAppOwned)
{
DebugHelper.Assert(false, "This should be impossible");
return;
}
ITestableFile file = await this.fileService.PickFileForOpenAsync().ConfigureAwait(false);
if (file != null)
{
DebugHelper.Trace($"Updating cached file");
ITestableFile storedFile = await GetFileAsync(sender).ConfigureAwait(false);
if (await CheckShouldProceedWithUpdateAsync(storedFile, file).ConfigureAwait(false))
{
await file.AsIStorageFile.CopyAndReplaceAsync(storedFile.AsIStorageFile)
.AsTask().ConfigureAwait(false);
await storedFile.ClearReadOnlyFlag().ConfigureAwait(false);
}
}
}
