private async Task LoadFilesAsync(string driveItemId, int pageIndex = 0)
{
IsDetailPaneVisible = false;
HideDetailsPane();
if (!string.IsNullOrEmpty(_driveId))
{
try
{
_cancelLoadFile.Cancel(false);
_cancelLoadFile.Dispose();
_cancelLoadFile = new CancellationTokenSource();
_list.Items.Clear();
VisualStateManager.GoToState(this, NavStatesFolderReadonly, false);
QueryOption queryOption = new QueryOption("$top", PageSize.ToString());
await GraphService.TryLoginAsync();
GraphServiceClient graphServiceClient = GraphService.GraphProvider;
Task <IDriveItemChildrenCollectionPage> taskFiles = graphServiceClient.Drives[_driveId].Items[driveItemId].Children.Request(new List <Option> {
queryOption
}).GetAsync(_cancelLoadFile.Token);
IDriveItemChildrenCollectionPage files = await taskFiles;
if (!taskFiles.IsCanceled)
{
_list.Items.Clear();
foreach (DriveItem file in files)
{
_list.Items.Add(file);
}
_nextPageRequest = files.NextPageRequest;
HasMore = _nextPageRequest != null;
VisualStateManager.GoToState(this, NavStatesFolderReadonly, false);
_pathVisualState = NavStatesFolderReadonly;
if (_driveItemPath.Count > 1)
{
IDriveItemPermissionsCollectionPage permissions = await graphServiceClient.Drives[_driveId].Items[driveItemId].Permissions.Request().GetAsync();
foreach (Permission permission in permissions)
{
if (permission.Roles.Contains("write") || permission.Roles.Contains("owner"))
{
VisualStateManager.GoToState(this, NavStatesFolderEdit, false);
_pathVisualState = NavStatesFolderEdit;
break;
}
}
}
else
{
_pathVisualState = NavStatesFolderEdit;
VisualStateManager.GoToState(this, NavStatesFolderEdit, false);
}
}
}
catch (Exception)
{
}
}
}
public IEnumerable <List <Permission> > GetDriveItemPermissions(Drive drive, DriveItem driveItem, CancellationToken token)
{
IDriveItemPermissionsCollectionPage page = null;
try
{
page = client.Drives[drive.Id].Items[driveItem.Id].Permissions.Request().GetAsync(token).Result;
}
catch (Exception ex)
{
HandleException(ex, null, messageOnlyExceptions, $"Get permissions for drive item: {driveItem.Name ?? "unknown"}");
}
while (page != null)
{
yield return(page.ToList());
if (page.NextPageRequest == null)
{
break;
}
page = page.NextPageRequest.GetAsync(token).Result;
}
}
private async void List_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
_cancelGetDetails.Cancel(false);
_cancelGetDetails.Dispose();
_cancelGetDetails = new CancellationTokenSource();
if (_list.SelectedItem is DriveItem driveItem && driveItem.File != null)
{
try
{
SelectedFile = driveItem;
FileSize = driveItem.Size ?? 0;
LastModified = driveItem.LastModifiedDateTime?.LocalDateTime.ToString() ?? string.Empty;
if (FileSelected != null)
{
FileSelected.Invoke(this, new FileSelectedEventArgs(driveItem));
}
ThumbnailImageSource = null;
VisualStateManager.GoToState(this, NavStatesFileReadonly, false);
GraphServiceClient graphClient = await GraphServiceHelper.GetGraphServiceClientAsync();
if (graphClient != null)
{
Task <IDriveItemPermissionsCollectionPage> taskPermissions = graphClient.Drives[_driveId].Items[driveItem.Id].Permissions.Request().GetAsync(_cancelGetDetails.Token);
IDriveItemPermissionsCollectionPage permissions = await taskPermissions;
if (!taskPermissions.IsCanceled)
{
foreach (Permission permission in permissions)
{
if (permission.Roles.Contains("write") || permission.Roles.Contains("owner"))
{
VisualStateManager.GoToState(this, NavStatesFileEdit, false);
break;
}
}
Task <IDriveItemThumbnailsCollectionPage> taskThumbnails = graphClient.Drives[_driveId].Items[driveItem.Id].Thumbnails.Request().GetAsync(_cancelGetDetails.Token);
IDriveItemThumbnailsCollectionPage thumbnails = await taskThumbnails;
if (!taskThumbnails.IsCanceled)
{
ThumbnailSet thumbnailsSet = thumbnails.FirstOrDefault();
if (thumbnailsSet != null)
{
Thumbnail thumbnail = thumbnailsSet.Large;
if (thumbnail.Url.Contains("inputFormat=svg"))
{
SvgImageSource source = new SvgImageSource();
using (Stream inputStream = await graphClient.Drives[_driveId].Items[driveItem.Id].Content.Request().GetAsync())
{
SvgImageSourceLoadStatus status = await source.SetSourceAsync(inputStream.AsRandomAccessStream());
if (status == SvgImageSourceLoadStatus.Success)
{
ThumbnailImageSource = source;
}
}
}
else
{
ThumbnailImageSource = new BitmapImage(new Uri(thumbnail.Url));
}
}
}
IsDetailPaneVisible = true;
ShowDetailsPane();
}
}
}
catch (Exception exception)
{
MessageDialog messageDialog = new MessageDialog(exception.Message);
await messageDialog.ShowAsync();
}
}
