/// <summary>
/// Registers new command handler in the factory.
/// </summary>
/// <param name="groupID">Command group GUID.</param>
/// <param name="commandID">Command identifier.</param>
/// <param name="createMethod">Create command handler method delegate.</param>
public void RegisterCommandHandler(Guid groupID, int commandID, CreateCommandMethod createMethod)
{
if (createMethod == null)
{
throw new ArgumentNullException("createMethod");
}
// Create key structure
CommandIDKey key = new CommandIDKey(groupID, commandID);
// Check, if handler already registered
if (commandHandlersDictionary.ContainsKey(key))
{
return;
}
commandHandlersDictionary.Add(key, createMethod);
}
/// <summary>
/// Returns instance of the command handler.
/// </summary>
/// <param name="groupID">Command group GUID.</param>
/// <param name="commandID">Command identifier.</param>
/// <returns>Returns instance of the command handler.</returns>
public ICommand CreateCommandHandler(Guid groupID, int commandID)
{
// Creating key structure
CommandIDKey key = new CommandIDKey(groupID, commandID);
// Check handler registration
if (!commandHandlersDictionary.ContainsKey(key))
{
return(null);
}
// Get create method and create instance
CreateCommandMethod createMethod = commandHandlersDictionary[key];
if (createMethod == null)
{
return(null);
}
return(createMethod.Invoke());
}
/// <summary>
/// Registers new command handler in the factory.
/// </summary>
/// <param name="groupID">Command group GUID.</param>
/// <param name="commandID">Command identifier.</param>
/// <param name="createMethod">Create command handler method delegate.</param>
public void RegisterCommandHandler(Guid groupID, int commandID, CreateCommandMethod createMethod)
{
if (createMethod == null)
throw new ArgumentNullException("createMethod");
// Create key structure
CommandIDKey key = new CommandIDKey(groupID, commandID);
// Check, if handler already registered
if (commandHandlersDictionary.ContainsKey(key))
return;
commandHandlersDictionary.Add(key, createMethod);
}
/// <summary>
/// Returns instance of the command handler.
/// </summary>
/// <param name="groupID">Command group GUID.</param>
/// <param name="commandID">Command identifier.</param>
/// <returns>Returns instance of the command handler.</returns>
public ICommand CreateCommandHandler(Guid groupID, int commandID)
{
// Creating key structure
CommandIDKey key = new CommandIDKey(groupID, commandID);
// Check handler registration
if( !commandHandlersDictionary.ContainsKey(key))
return null;
// Get create method and create instance
CreateCommandMethod createMethod = commandHandlersDictionary[key];
if (createMethod == null)
return null;
return createMethod.Invoke();
}
