/// <summary>
/// Walks the given files recursively to obtain the full tree.
/// This triggers List requests against Google Drive.
/// </summary>
/// <param name="walker"></param>
/// <param name="files"></param>
/// <returns></returns>
private static IFileNode[] Walk(IWalker walker, IFile[] files)
{
return files.Select(f => walker.ListRecurse(f)).ToArray();
}
public async Task<bool> DeleteDocuments (IFile[] files, UIBarButtonItem deleteButton)
{
if (DismissSheetsAndPopovers ())
return false;
if (files.Length == 0)
return false;
//
// Ask if we should delete
//
var tcs = new TaskCompletionSource<int> ();
ActionSheet = new UIActionSheet ();
ActionSheet.AddButton ("Delete " + DescribeFiles (files));
ActionSheet.AddButton ("Cancel");
ActionSheet.DestructiveButtonIndex = 0;
ActionSheet.CancelButtonIndex = 1;
ActionSheet.Clicked += (ss, se) => {
try {
tcs.SetResult ((int)se.ButtonIndex);
} catch (Exception ex) {
Log.Error (ex);
}
};
ActionSheet.ShowFrom (deleteButton, true);
var button = await tcs.Task;
if (button != 0)
return false;
//
// Perform the delete
//
try {
await DeleteDocs (files.Select(x => x.Path).ToArray());
foreach (var f in files) {
InvalidateThumbnail (f, deleteThumbnail: true, reloadThumbnail: false);
}
} catch (Exception ex) {
Console.WriteLine (ex);
}
return true;
}