public void ProcessFileNode(IMegaNode node)
{
this.FocusedNode = node;
var existingNode = SavedForOffline.ReadNodeByFingerprint(this.MegaSdk.getNodeFingerprint(node.OriginalMNode));
if (existingNode != null && !String.IsNullOrWhiteSpace(existingNode.LocalPath) &&
FileService.FileExists(existingNode.LocalPath))
{
var offlineNode = new OfflineFileNodeViewModel(new FileInfo(existingNode.LocalPath));
offlineNode.Open();
}
else
{
if (node.IsImage)
{
OnUiThread(() => NavigateService.NavigateTo(typeof(PreviewImagePage), NavigationParameter.Normal, this));
}
else
{
this.FocusedNode.Download(TransfersService.MegaTransfers);
}
}
}
/// <summary>
/// Load the nodes for this specific folder
/// </summary>
public void LoadChildNodes()
{
// First cancel any other loading task that is busy
CancelLoad();
// FolderRootNode should not be null
if (FolderRootNode == null)
{
OnUiThread(() =>
{
new CustomMessageDialog(
AppMessages.LoadNodesFailed_Title,
AppMessages.LoadNodesFailed,
App.AppInformation,
MessageDialogButtons.Ok).ShowDialog();
});
return;
}
SetProgressIndication(true);
// Process is started so we can set the empty content template to loading already
SetEmptyContentTemplate(true);
// Clear the child nodes to make a fresh start
ClearChildNodes();
// Set the correct view for the main drive. Do this after the childs are cleared to speed things up
SetViewOnLoad();
// Build the bread crumbs. Do this before loading the nodes so that the user can click on home
OnUiThread(BuildBreadCrumbs);
// Create the option to cancel
CreateLoadCancelOption();
// Load and create the childnodes for the folder
Task.Factory.StartNew(() =>
{
try
{
ObservableCollection <IOfflineNode> tempChildNodes = new ObservableCollection <IOfflineNode>();
String[] childFolders = Directory.GetDirectories(FolderRootNode.NodePath);
foreach (var folder in childFolders)
{
var childNode = new OfflineFolderNodeViewModel(new DirectoryInfo(folder), tempChildNodes);
if (childNode == null)
{
continue;
}
if (FolderService.IsEmptyFolder(childNode.NodePath))
{
FolderService.DeleteFolder(childNode.NodePath, true);
continue;
}
Deployment.Current.Dispatcher.BeginInvoke(() => tempChildNodes.Add(childNode));
}
String[] childFiles = Directory.GetFiles(FolderRootNode.NodePath);
foreach (var file in childFiles)
{
var fileInfo = new FileInfo(file);
if (FileService.IsPendingTransferFile(fileInfo.Name))
{
if (!(TransfersService.MegaTransfers.Downloads.Count > 0))
{
FileService.DeleteFile(fileInfo.FullName);
}
continue;
}
var childNode = new OfflineFileNodeViewModel(fileInfo, tempChildNodes);
if (childNode == null)
{
continue;
}
Deployment.Current.Dispatcher.BeginInvoke(() => tempChildNodes.Add(childNode));
}
OrderChildNodes(tempChildNodes);
// Show the user that processing the childnodes is done
SetProgressIndication(false);
// Set empty content to folder instead of loading view
SetEmptyContentTemplate(false);
OnUiThread(() => OnPropertyChanged("HasChildNodesBinding"));
}
catch (OperationCanceledException)
{
// Do nothing. Just exit this background process because a cancellation exception has been thrown
}
}, LoadingCancelToken, TaskCreationOptions.PreferFairness, TaskScheduler.Current);
}