/// <summary>
/// Prints out the page and polls the user for a menu choice.
/// </summary>
// abuse of next and previous options could lead to a lot of method calls on the stack,
// but should be okay since the speed of calls are limited to user inputs.
internal char Prompt()
{
Print();
while (true)
{
char key = Console.ReadKey(true).KeyChar;
if (key == 'n' && next != null)
{
next.Prompt();
return(key);
}
if (key == 'p' && previous != null)
{
previous.Prompt();
return(key);
}
int val = (int)Char.GetNumericValue(key);
if (val >= 0 && val < entries.Count())
{
entries[val].PerformAction();
return(key);
}
}
}
/// <summary>
/// Call to display the menu and let the user pick one of the options.
/// </summary>
/// <returns>the users choice for more advanced usage</returns>
public char Prompt()
{
return(headEntry.Prompt());
}