using System;
using iTextSharp.text;
using Spring.Objects;
using Sleis.Utility;
using iTextSharp.text.pdf;

namespace Sleis.Pdf
{
    public class ObjectElementWriter : ElementWriter
    {

        public string Label { get; set; }
        public string Format { get; set; }
        public string Select { get; set; }
        public bool SkipNulls { get; set; }

        public override void Init()
        {
            ArgumentValidationUtility.ThrowOnEmpty(Select, "Select");
            if (String.IsNullOrEmpty(Format))
            {
                Format = "{0}";
            }
        }


        public override void Write(Document pdf, ObjectWrapper context)
        {
           
            LOG.Debug("Init Write");
            BeforeWrite(pdf, context);
            object selectionValue = null;
            try
            {
                selectionValue = context.GetPropertyValue(Select);
            }
            catch(Exception err) { LOG.Debug(String.Format("Error getting accessing {0} : {1}", Select,  err.Message)); }//swallowed

            if (selectionValue != null || !SkipNulls)
            {
                if (String.IsNullOrEmpty(Label))
                {
                    Write(pdf, String.Format(Format, selectionValue));
                }
                else
                {
                    Write(pdf, String.Format(Format, selectionValue), Label);
                }
            }
        }
    }
}