/// <summary>
/// Method CallEvent
/// Calls delegate passed.
/// </summary>
private void CallEvent(CatalogEventArgs e, CatalogStateHandler handler)
{
if ((handler != null) && (e != null))
{
handler(this, e);
}
}
/// <summary>
/// Method DisplayCountCar
/// Displays information about the counting of car brands.
/// </summary>
private void DisplayCountBrand(CatalogEventArgs e)
{
ConsoleColor color = Console.ForegroundColor;
Console.ForegroundColor = ConsoleColor.DarkGray;
Console.WriteLine($"Number of car brands : {e.NumberOfCars}\n");
Console.ForegroundColor = color;
}
/// <summary>
/// Method DisplayAddCar
/// Displays information about the added car.
/// </summary>
private void DisplayAddCar(CatalogEventArgs e)
{
ConsoleColor color = Console.ForegroundColor;
Console.ForegroundColor = ConsoleColor.DarkGray;
Console.WriteLine($"Added car in the catalog. (ID : {e.Count})");
Console.WriteLine($"Brand : {e.Brand}");
Console.WriteLine($"Model : {e.Model}");
Console.WriteLine($"Number of cars : {e.NumberOfCars}");
Console.WriteLine($"Price : {e.Price}\n");
Console.ForegroundColor = color;
}
/// <summary>
/// Method DisplayAverageCost
/// Displays information on the calculation of the average price of cars.
/// </summary>
private void DisplayAverageCost(CatalogEventArgs e)
{
ConsoleColor color = Console.ForegroundColor;
Console.ForegroundColor = ConsoleColor.DarkGray;
if (e.Brand == string.Empty)
{
Console.WriteLine($"Average cost of the car : {e.Price}\n");
}
else
{
Console.WriteLine($"Average cost of {e.Brand} cars : {e.Price}\n");
}
Console.ForegroundColor = color;
}
/// <summary>
/// Method AverageCarPriceHandler
/// The method that handles the event of calculating the average price of cars.
/// </summary>
public void AverageCarPriceHandler(object sender, CatalogEventArgs e)
{
DisplayAverageCost(e);
}
/// <summary>
/// Method CountCarHandler
/// A method that handles a car counting event.
/// </summary>
public void CountTypeHandler(object sender, CatalogEventArgs e)
{
DisplayCountBrand(e);
}
/// <summary>
/// Method CountCarHandler
/// A method that handles a car counting event.
/// </summary>
public void CountCarHandler(object sender, CatalogEventArgs e)
{
DisplayCountCar(e);
}
/// <summary>
/// Method AddedCarHandler
/// The method that handles the event of adding a car.
/// </summary>
public void AddedCarHandler(object sender, CatalogEventArgs e)
{
DisplayAddCar(e);
}