/// <summary>
/// Registers a callback with the specified <paramref name="name" />. When the callback is called, the specified
/// <paramref name="methodInfo" /> will be invoked on the specified <paramref name="target" />.
/// </summary>
/// <param name="name">The name af the callback to register.</param>
/// <param name="target">The target on which to invoke the method.</param>
/// <param name="methodInfo">The method information of the method to invoke when the callback is called.</param>
/// <param name="parameters">The parameters of the callback.</param>
public void RegisterCallback(string name, object target, MethodInfo methodInfo, CallbackParameterInfo[] parameters)
{
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
if (target == null)
{
throw new ArgumentNullException(nameof(target));
}
if (methodInfo == null)
{
throw new ArgumentNullException(nameof(methodInfo));
}
if (parameters == null)
{
throw new ArgumentNullException(nameof(parameters));
}
AssertRunning();
if (!Callback.IsValidReturnType(methodInfo.ReturnType))
{
throw new CallbackRegistrationException("The method uses an unsupported return type");
}
var callback = new Callback(target, methodInfo, name, this);
if (!callback.MatchesParameters(parameters))
{
throw new CallbackRegistrationException("The method does not match the specified parameters.");
}
_callbacks[name] = callback;
var data = ValueConverter.GetBytes(name, Encoding)
.Concat(parameters.SelectMany(c => c.GetBytes()))
.Concat(new[] { (byte)ServerCommandArgument.Terminator }).ToArray();
if (IsOnMainThread)
{
EnsureBufferSize(data.Length);
Marshal.Copy(data, 0, _buffer, data.Length);
Interop.RegisterCallback(_buffer);
}
else
{
_synchronizationContext.Send(ctx =>
{
EnsureBufferSize(data.Length);
Marshal.Copy(data, 0, _buffer, data.Length);
Interop.RegisterCallback(_buffer);
}, null);
}
}
private void SendOnMainThread(ServerCommand command, IEnumerable <byte> data)
{
if (IsOnMainThread)
{
Send(command, data);
}
else
{
_synchronizationContext.Send(ctx => Send(command, data), null);
}
}