public static void Execute_DisplayConsoleChoice(object sender, PresenterExecuteEventArgs eventArgs)
{
IChoicePresenter_Old cp = (IChoicePresenter_Old)sender;
Console.WriteLine(eventArgs.TextToDisplay);
if (eventArgs.ChoicesToDisplay.Length > 0)
{
Debug.Assert(eventArgs.ChoicesToDisplay.Length < 10);
for (int i = 0; i < eventArgs.ChoicesToDisplay.Length; i++)
{
Console.Write($"{i}. ");
Console.WriteLine(eventArgs.ChoicesToDisplay[i]);
}
ConsoleKeyInfo keyInfo;
do
{
keyInfo = Console.ReadKey(true);
}while (!char.IsDigit(keyInfo.KeyChar));
// Add a U_IDQuery to blackboard for the target content unit associated with the choice.
uint choiceMade = uint.Parse(keyInfo.KeyChar.ToString());
cp.SelectChoice((ContentUnit[])eventArgs.Choices, choiceMade);
}
}
private EventHandler <PresenterExecuteEventArgs> GenerateEventHandler(ContentUnit selectedCU, ContentUnit[] choices, IBlackboard blackboard)
{
return((object sender, PresenterExecuteEventArgs eventArgs) =>
{
var presenterEventArgs = eventArgs as PresenterExecuteEventArgs;
if (selectedCU != null)
{
Assert.Equal(selectedCU.Content[Text], presenterEventArgs.TextToDisplay);
int numOfChoices = choices.Length;
Assert.Equal(numOfChoices, presenterEventArgs.Choices.Length);
foreach (ContentUnit choice in choices)
{
Assert.True(Array.Exists(presenterEventArgs.ChoicesToDisplay, element => element.Equals(choice.Content[Text])));
}
}
else
{
Assert.Equal("", presenterEventArgs.TextToDisplay);
}
// Iterate through each of the choices selecting it and confirming that the correct U_IDSelectRequest is added.
IChoicePresenter_Old cp = (IChoicePresenter_Old)sender;
for (uint i = 0; i < presenterEventArgs.ChoicesToDisplay.Length; i++)
{
cp.SelectChoice((ContentUnit[])presenterEventArgs.Choices, i);
U_IDSelectRequest idSelectRequest = blackboard.LookupSingleton <U_IDSelectRequest>();
Assert.True(idSelectRequest.TargetContentUnitID.Equals(choices[i].Metadata[TargetContentUnitID]));
blackboard.RemoveUnit(idSelectRequest); // Remove the U_IDSelect request before the next iteration.
}
});
}