/// <summary>
/// Send instruction to client
/// </summary>
public void QueueInstruction(TerminalInstructionCode instruction, object data = null)
{
QueueInstruction(new TerminalInstruction()
{
Code = instruction, Data = data
});
}
/// <summary>
/// Execute instruction on client side and wait for input
/// </summary>
public bool ExecuteInstruction(TerminalInstructionCode instruction, object data, out object result)
{
try
{
_currentSynchronousInstruction = new SynchronousTerminalInstruction()
{
Code = instruction, Data = data
};
// send to client
QueueInstruction(_currentSynchronousInstruction);
// wait for client response or cancelation
_currentSynchronousInstruction.WaitHandle.WaitOne();
result = _currentSynchronousInstruction.Result;
return(!_currentSynchronousInstruction.Canceled);
}
finally
{
// cleanup
_currentSynchronousInstruction.WaitHandle.Dispose();
_currentSynchronousInstruction = null;
}
}
private Collection <int> PromptForChoice(
string caption,
string message,
Collection <ChoiceDescription> choices,
IEnumerable <int> defaultChoices,
TerminalInstructionCode instructionCode)
{
Collection <int> selected = null;
var promptRequest = new
{
caption = caption,
message = message,
descriptions = choices.Select((cd, i) =>
new { name = cd.Label.Replace("&", ""), selected = (defaultChoices.Contains(i)) })
};
object result;
if (_terminal.ExecuteInstruction(instructionCode, promptRequest, out result))
{
var jsonArray = result as JArray;
if (jsonArray != null && jsonArray.Count == choices.Count)
{
for (int i = 0; i < choices.Count; i++)
{
var jsonVal = jsonArray[i] as JValue;
if (jsonVal != null)
{
if (selected == null)
{
selected = new Collection <int>();
}
if (jsonVal.Value <bool>() == true)
{
selected.Add(i);
}
}
}
}
}
return(selected);
}
