protected virtual async Task NavigateToFileSystemItemAsync(FileSystemItemBase item)
{
bool attachChildrenChangedHandler = true;
if (_currentDirectory != null && _currentDirectory != item)
{
_currentDirectory.ChildrenChanged -= OnChildrenChanged;
attachChildrenChangedHandler = false;
}
foreach (var oldItem in _items)
{
oldItem.Dispose();
}
var children = SortItems((await item.EnumerateChildrenAsync())).ToArray();
lock (_items)
{
_items.Clear();
foreach (var child in children)
{
_items.Add(child);
}
}
if (attachChildrenChangedHandler)
{
item.ChildrenChanged += OnChildrenChanged;
}
_currentDirectory = item;
// iOS requires this
OnPropertyChanged(nameof(Items));
}
public override FileOperationResult FilePut(string localName, ref string remoteName, CopyFlags copyFlags)
{
bool cancelled = !Progress.SetProgress(remoteName, localName, 0);
if (cancelled)
{
return(FileOperationResult.UserAbort);
}
FileSystemItemBase remoteBlob = null;
if (Root.Instance.TryGetItemByPath(remoteName, out remoteBlob))
{
//First time? - show user a prompt.
if ((copyFlags & CopyFlags.Overwrite) != CopyFlags.Overwrite)
{
return(FileOperationResult.Exists);
}
}
int lastSlashIndex = remoteName.LastIndexOf('\\');
string existingFolderPath = remoteName.Substring(0, lastSlashIndex);
string newFolderName = remoteName.Substring(lastSlashIndex + 1);
var directory = Root.Instance.GetItemByPath(existingFolderPath);
var cancellationToken = new CancellationTokenSource();
var name = remoteName;
Action <int> setProgress = progress =>
{
cancelled = !Progress.SetProgress(localName, name, progress);
if (cancelled)
{
cancellationToken.Cancel();
}
};
try
{
directory.UploadFile(localName, newFolderName, copyFlags, cancellationToken.Token, setProgress);
}
catch (OperationCanceledException ex)
{
//remove half uploaded file
if (Root.Instance.TryGetItemByPath(remoteName, out remoteBlob))
{
remoteBlob.Delete();
}
return(FileOperationResult.UserAbort);
}
if ((copyFlags & CopyFlags.Move) == CopyFlags.Move)
{
File.Delete(localName);
}
Progress.SetProgress(remoteName, localName, 100);
return(FileOperationResult.OK);
}
public async Task OpenItemAsync(FileSystemItemBase fileSystemItem)
{
await NavigateToFileSystemItemAsync(fileSystemItem);
}
