using System;
using System.IO;
using System.Reflection;
using System.Windows.Markup;
using System.Xml;

namespace Caliburn
{
    public static class Element
    {
        public static T FromFile<T>(string relativePath)
        {
            string filePath = Path.Combine(
                AppDomain.CurrentDomain.BaseDirectory,
                relativePath
                );

            using(Stream stream = File.OpenRead(filePath))
            {
                return (T) XamlReader.Load(stream);
            }
        }

        public static T FromResource<T>(string resourceName)
        {
            Assembly callingAssembly = Assembly.GetCallingAssembly();
            return FromResource<T>(callingAssembly, resourceName);
        }

        public static T FromResource<T>(Assembly assembly, string resourceName)
        {
            using(Stream stream = assembly.GetManifestResourceStream(resourceName))
            {
                return (T) XamlReader.Load(stream);
            }
        }

        public static T FromXaml<T>(string xaml)
        {
            return (T) XamlReader.Load(
                           XmlReader.Create(
                               new StringReader(xaml)
                               )
                           );
        }

        public static T FromXaml<T>(Stream xamlStream)
        {
            return (T) XamlReader.Load(xamlStream);
        }
    }
}