/// <summary>
/// Registers the specified command handler with the formatter.
/// </summary>
/// <param name="handler">The command handler to register.</param>
public void RegisterCommandHandler(StringFormatterCommandHandler handler)
{
Contract.Require(handler, nameof(handler));
if (commandHandlers.Contains(handler))
{
throw new InvalidOperationException(CoreStrings.FmtCmdHandlerAlreadyRegistered);
}
commandHandlers.Add(handler);
}
/// <summary>
/// Unregisters the specified command handler from the formatter.
/// </summary>
/// <param name="handler">The command handler to unregister.</param>
public void UnregisterCommandHandler(StringFormatterCommandHandler handler)
{
Contract.Require(handler, nameof(handler));
commandHandlers.Remove(handler);
}
