/// <summary>
/// Begins a file dragdrop operation, and assigns an access token to the operation
/// </summary>
/// <param name="cbFiles"></param>
/// <param name="host"></param>
/// <param name="operationId"></param>
private async Task BeginFileOperationAsync(ClipboardVirtualFileData cbFiles, ISServerSocket host, Guid operationId)
{
Guid fileAccesstoken = Guid.Empty;
DragDropOperation newOperation = new DragDropOperation(cbFiles, host, operationId);
try
{
fileAccesstoken = await CreateAccessTokenForOperation(newOperation);
}
catch (Exception ex)
{
ISLogger.Write("DragDropController: Cancelling operation, could not generate file access token: " + ex.Message);
return;
}
newOperation.RemoteFileAccessToken = fileAccesstoken;
//Create events, incase the files are dropped on localhost
if (!newOperation.Host.IsLocalhost)
{
for (int i = 0; i < cbFiles.AllFiles.Count; i++)
{
cbFiles.AllFiles[i].RemoteAccessToken = fileAccesstoken;
cbFiles.AllFiles[i].ReadDelegate = File_RequestDataAsync;
cbFiles.AllFiles[i].ReadComplete += VirtualFile_ReadComplete;
cbFiles.AllFiles[i].FileOperationId = newOperation.OperationId;
}
}
//If the previous dragdrop operation is still transfering files, store it so that the files can keep being transfered
if (CurrentOperation != null && CurrentOperation.State == DragDropState.TransferingFiles)
{
previousOperationIds.Add(CurrentOperation.OperationId, CurrentOperation);
}
//Sets the new operation, which is automatically set to dragging state
CurrentOperation = newOperation;
if (currentInputClient.IsLocalhost)
{
ddManager.DoDragDrop(CurrentOperation.OperationData, newOperation.OperationId);
}
else
{
currentInputClient.SendDragDropData(CurrentOperation.OperationData.ToBytes(), CurrentOperation.OperationId);
}
}
public void HandleClientSwitch(ISServerSocket newClient, ISServerSocket oldClient)
{
currentInputClient = newClient;
//if moving from localhost to client, check for drop if not in operation, Only do this if the left mouse button is down
if (oldClient.IsLocalhost && CurrentOperation?.State != DragDropState.Dragging && ddManager.LeftMouseState)
{
ddManager.CheckForDrop();
}
ddManager.CancelDrop();
if (CurrentOperation == null)
{
return;
}
//If we are dragging a file, make sure that we don't send the dragdrop back to the host
//as this causes issues
if (CurrentOperation.DataType == ClipboardDataType.File && CurrentOperation.State == DragDropState.Dragging)
{
if (newClient == CurrentOperation.Host)
{
ISLogger.Write("Dragdrop returned to sender... cancelling");
OnDropCancel(newClient, CurrentOperation.OperationId);
return;
}
}
if (CurrentOperation.State == DragDropState.Dragging)
{
if (newClient.IsLocalhost)
{
ddManager.DoDragDrop(CurrentOperation.OperationData, CurrentOperation.OperationId);
}
}
//if we are dragging a file, send the dragdrop data to the client
if (CurrentOperation.State == DragDropState.Dragging)
{
if (!newClient.IsLocalhost)
{
newClient.SendDragDropData(CurrentOperation.OperationData.ToBytes(), CurrentOperation.OperationId);
}
}
}
