/// <summary>
/// Initializes a new instance of the <see cref="DialogContext"/> class.
/// </summary>
/// <param name="dialogs">Parent dialog set.</param>
/// <param name="turnContext">Context for the current turn of conversation with the user.</param>
/// <param name="state">Current dialog state.</param>
internal DialogContext(DialogSet dialogs, TurnContext turnContext, DialogState state)
{
Dialogs = dialogs ?? throw new ArgumentNullException(nameof(dialogs));
Context = turnContext ?? throw new ArgumentNullException(nameof(turnContext));
Stack = state.DialogStack;
}
public override async Task <DialogTurnResult> BeginDialogAsync(DialogContext outerDc, object options = null, CancellationToken cancellationToken = default(CancellationToken))
{
if (outerDc == null)
{
throw new ArgumentNullException(nameof(outerDc));
}
// Start the inner dialog.
var dialogState = new DialogState();
outerDc.ActiveDialog.State[PersistedDialogState] = dialogState;
var innerDc = new DialogContext(_dialogs, outerDc.Context, dialogState);
innerDc.Parent = outerDc;
var turnResult = await OnBeginDialogAsync(innerDc, options, cancellationToken).ConfigureAwait(false);
// Check for end of inner dialog
if (turnResult.Status != DialogTurnStatus.Waiting)
{
// Return result to calling dialog
return(await EndComponentAsync(outerDc, turnResult.Result, cancellationToken).ConfigureAwait(false));
}
else
{
// Just signal waiting
return(Dialog.EndOfTurn);
}
}