Download data convention

DownloadDataBehavior.cs

public class DownloadDataModel
{
    public string Data { get; set; }
    public string Filename { get; set; }
    public string MimeType { get; set; }
}

public class DownloadDataBehavior : BasicBehavior
{
    private readonly IFubuRequest _request;
    private readonly IOutputWriter _writer;

    public DownloadDataBehavior(IOutputWriter writer, IFubuRequest request)
        : base(PartialBehavior.Ignored)
    {
        _writer = writer;
        _request = request;
    }

    protected override DoNext performInvoke()
    {
        var output = _request.Get<DownloadDataModel>();
        _writer.Write(output.MimeType, output.Data);
        _writer.AppendHeader("Content-Disposition", "attachment; filename=" + output.Filename + ";");

        return DoNext.Continue;
    }
}

DownloadDataConvention.cs

public class DownloadDataConvention : ActionCallModification
{
    public DownloadDataConvention()
        : base(call => call.AddToEnd(new OutputNode(typeof (DownloadDataBehavior))), "Adding download data behavior as the output node")
    {
        Filters.Excludes.Add(call => call.HasAnyOutputBehavior());
        Filters.Includes.Add(call => call.OutputType().CanBeCastTo<DownloadDataModel>());
    }
}

FubuConventions.cs

public class FubuConventions : FubuRegistry
{
    public FubuConventions()
    {
        ...
            
        ApplyConvention<DownloadDataConvention>();

        ...
    }
}