/// <summary>
/// Removes the <see cref="CommandAdapter"/> from this command.
/// </summary>
/// <param name="adapter">The <see cref="CommandAdapter"/> to remove from this <see cref="Command"/>.</param>
public virtual void RemoveCommandAdapter(CommandAdapter adapter)
{
adapter.ExecuteCommand -= this.OnExecuteAction;
adapter.UnbindCommand(this);
adapters.Remove(adapter);
}
private CommandAdapter FindAssignableAdapter(Type type)
{
CommandAdapter adapter = null;
foreach (KeyValuePair <Type, Type> pair in map)
{
if (pair.Key.IsAssignableFrom(type))
{
adapter = (CommandAdapter)Activator.CreateInstance(pair.Value);
break;
}
}
return(adapter);
}
/// <summary>
/// Creates a new <see cref="CommandAdapter"/> instance for the specified invoker type.
/// </summary>
/// <param name="invokerType">The invoker type to create an adapter for.</param>
/// <returns>A new <see cref="CommandAdapter"/> instance for the registered invoker;
/// null if there is no adapter registration for the required invoker type.</returns>
public CommandAdapter CreateAdapter(Type invokerType)
{
Guard.ArgumentNotNull(invokerType, "invokerType");
CommandAdapter adapter = null;
if (map.ContainsKey(invokerType))
{
adapter = (CommandAdapter)Activator.CreateInstance(map[invokerType]);
}
else
{
adapter = FindAssignableAdapter(invokerType);
}
return(adapter);
}
/// <summary>
/// Adds a new invoker for this <see cref="Command"/>.
/// </summary>
/// <remarks>The command will use the <see cref="ICommandAdapterMapService"/> to create the
/// corresponding <see cref="CommandAdapter"/> for the specified invoker.</remarks>
public virtual void AddInvoker(object invoker, string eventName)
{
if (mapService == null)
{
throw new CommandException(String.Format(CultureInfo.CurrentCulture,
Resources.CannotGetMapService, name));
}
CommandAdapter adapter = mapService.CreateAdapter(invoker.GetType());
if (adapter == null)
{
throw new CommandException(String.Format(CultureInfo.CurrentCulture,
Resources.CannotGetCommandAdapter, invoker.GetType()));
}
adapter.AddInvoker(invoker, eventName);
AddCommandAdapter(adapter);
ownedAdapters.Add(adapter);
}
/// <summary>
/// Registers a <see cref="CommandAdapter"/> with this command.
/// </summary>
/// <param name="adapter">The <see cref="CommandAdapter"/> to register with this <see cref="Command"/>.</param>
public virtual void AddCommandAdapter(CommandAdapter adapter)
{
adapter.ExecuteCommand += this.OnExecuteAction;
adapter.BindCommand(this);
adapters.Add(adapter);
}