/// <summary>
/// Initializes the supplied <see cref="RssItem"/> using the specified <see cref="XPathNavigator"/> and <see cref="XmlNamespaceManager"/>.
/// </summary>
/// <param name="item">The <see cref="RssItem"/> to be filled.</param>
/// <param name="navigator">The <see cref="XPathNavigator"/> used to navigate the item XML data.</param>
/// <param name="manager">The <see cref="XmlNamespaceManager"/> used to resolve XML namespace prefixes.</param>
/// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> object used to configure the load operation.</param>
/// <exception cref="ArgumentNullException">The <paramref name="item"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="navigator"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="manager"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="settings"/> is a null reference (Nothing in Visual Basic).</exception>
private static void FillItem(RssItem item, XPathNavigator navigator, XmlNamespaceManager manager, SyndicationResourceLoadSettings settings)
{
Guard.ArgumentNotNull(item, "item");
Guard.ArgumentNotNull(navigator, "navigator");
Guard.ArgumentNotNull(manager, "manager");
Guard.ArgumentNotNull(settings, "settings");
XPathNavigator titleNavigator = navigator.SelectSingleNode("title", manager);
XPathNavigator linkNavigator = navigator.SelectSingleNode("link", manager);
XPathNavigator descriptionNavigator = navigator.SelectSingleNode("description", manager);
XPathNavigator sourceNavigator = navigator.SelectSingleNode("source", manager);
XPathNodeIterator enclosureIterator = navigator.Select("enclosure", manager);
XPathNodeIterator categoryIterator = navigator.Select("category", manager);
if (titleNavigator != null)
{
item.Title = titleNavigator.Value;
}
if (descriptionNavigator != null)
{
item.Description = descriptionNavigator.Value;
}
if (linkNavigator != null)
{
Uri link;
if (Uri.TryCreate(linkNavigator.Value, UriKind.RelativeOrAbsolute, out link))
{
item.Link = link;
}
}
if (sourceNavigator != null)
{
item.Source = new RssSource();
if (sourceNavigator.HasAttributes)
{
string urlAttribute = sourceNavigator.GetAttribute("url", String.Empty);
Uri url;
if (Uri.TryCreate(urlAttribute, UriKind.RelativeOrAbsolute, out url))
{
item.Source.Url = url;
}
}
if (!String.IsNullOrEmpty(sourceNavigator.Value))
{
item.Source.Title = sourceNavigator.Value;
}
}
if (enclosureIterator != null && enclosureIterator.Count > 0)
{
while (enclosureIterator.MoveNext())
{
RssEnclosure enclosure = new RssEnclosure();
Rss092SyndicationResourceAdapter.FillEnclosure(enclosure, enclosureIterator.Current, manager, settings);
item.Enclosures.Add(enclosure);
}
}
if (categoryIterator != null && categoryIterator.Count > 0)
{
while (categoryIterator.MoveNext())
{
RssCategory category = new RssCategory();
Rss092SyndicationResourceAdapter.FillCategory(category, categoryIterator.Current, manager, settings);
item.Categories.Add(category);
}
}
SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(navigator, settings);
adapter.Fill(item);
}
