Example #1
0
        /// <summary>
        /// Creates an element of the given type or returns null, if there is
        /// no such type.
        /// </summary>
        /// <typeparam name="TElement">The type of element to create.</typeparam>
        /// <param name="document">The responsible document.</param>
        /// <returns>The new element, if available.</returns>
        public static TElement CreateElement <TElement>(this IDocument document)
            where TElement : IElement
        {
            var type = typeof(ApiExtensions).GetAssembly().GetTypes()
                       .Where(m => m.Implements <TElement>())
                       .FirstOrDefault(m => !m.IsAbstractClass());

            if (type == null)
            {
                return(default(TElement));
            }

            var ctor = type.GetConstructor();

            if (ctor == null)
            {
                return(default(TElement));
            }

            var element = (TElement)ctor.Invoke(null);
            var el      = element as Element;

            if (element != null)
            {
                document.Adopt(element);
            }

            if (el != null)
            {
                el.Close();
            }

            return(element);
        }
Example #2
0
        /// <summary>
        /// Creates an element of the given type or throws an exception, if
        /// there is no such type.
        /// </summary>
        /// <typeparam name="TElement">The type of the element.</typeparam>
        /// <param name="document">The responsible document.</param>
        /// <returns>The created element.</returns>
        public static TElement CreateElement <TElement>(this IDocument document)
            where TElement : IElement
        {
            if (document == null)
            {
                throw new ArgumentNullException("document");
            }

            var type = typeof(ApiExtensions).GetAssembly().GetTypes()
                       .Where(m => m.Implements <TElement>())
                       .FirstOrDefault(m => !m.IsAbstractClass());

            if (type != null)
            {
                var ctors = type.GetConstructors()
                            .OrderBy(m => m.GetParameters().Length);

                foreach (var ctor in ctors)
                {
                    var parameters = ctor.GetParameters();
                    var arguments  = new Object[parameters.Length];

                    for (var i = 0; i < parameters.Length; i++)
                    {
                        var isDocument = parameters[i].ParameterType == typeof(Document);
                        arguments[i] = isDocument ? document : parameters[i].DefaultValue;
                    }

                    var obj = ctor.Invoke(arguments);

                    if (obj != null)
                    {
                        var element     = (TElement)obj;
                        var baseElement = element as Element;

                        if (baseElement != null)
                        {
                            baseElement.SetupElement();
                        }

                        document.Adopt(element);
                        return(element);
                    }
                }
            }

            throw new ArgumentException("No element could be created for the provided interface.");
        }
Example #3
0
        /// <summary>
        /// Creates an element of the given type or returns null, if there is
        /// no such type.
        /// </summary>
        /// <typeparam name="TElement">The type of element to create.</typeparam>
        /// <param name="document">The responsible document.</param>
        /// <returns>The new element, if available.</returns>
        public static TElement CreateElement <TElement>(this IDocument document)
            where TElement : IElement
        {
            if (document == null)
            {
                throw new ArgumentNullException("document");
            }

            var type = typeof(ApiExtensions).GetAssembly().GetTypes()
                       .Where(m => m.Implements <TElement>())
                       .FirstOrDefault(m => !m.IsAbstractClass());

            if (type == null)
            {
                return(default(TElement));
            }

            var ctor          = type.GetConstructor();
            var parameterLess = ctor != null;

            if (parameterLess == false)
            {
                ctor = type.GetConstructor(new Type[] { typeof(Document) });
            }

            if (ctor == null)
            {
                return(default(TElement));
            }

            var element = (TElement)(parameterLess ? ctor.Invoke(null) : ctor.Invoke(new Object[] { document }));
            var el      = element as Element;

            if (element != null)
            {
                document.Adopt(element);
            }

            return(element);
        }