/// <summary>
/// Initializes the supplied <see cref="RssChannel"/> using the specified <see cref="XPathNavigator"/> and <see cref="XmlNamespaceManager"/>.
/// </summary>
/// <param name="channel">The <see cref="RssChannel"/> to be filled.</param>
/// <param name="navigator">The <see cref="XPathNavigator"/> used to navigate the channel 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="channel"/> 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 FillChannel(RssChannel channel, XPathNavigator navigator, XmlNamespaceManager manager, SyndicationResourceLoadSettings settings)
{
Guard.ArgumentNotNull(channel, "channel");
Guard.ArgumentNotNull(navigator, "navigator");
Guard.ArgumentNotNull(manager, "manager");
Guard.ArgumentNotNull(settings, "settings");
XPathNavigator descriptionNavigator = navigator.SelectSingleNode("description", manager);
XPathNavigator linkNavigator = navigator.SelectSingleNode("link", manager);
XPathNavigator titleNavigator = navigator.SelectSingleNode("title", manager);
XPathNavigator languageNavigator = navigator.SelectSingleNode("language", manager);
if (descriptionNavigator != null && !String.IsNullOrEmpty(descriptionNavigator.Value))
{
channel.Description = descriptionNavigator.Value;
}
if (linkNavigator != null)
{
Uri link;
if (Uri.TryCreate(linkNavigator.Value, UriKind.RelativeOrAbsolute, out link))
{
channel.Link = link;
}
}
if (titleNavigator != null && !String.IsNullOrEmpty(titleNavigator.Value))
{
channel.Title = titleNavigator.Value;
}
if (languageNavigator != null && !String.IsNullOrEmpty(languageNavigator.Value))
{
try
{
CultureInfo language = new CultureInfo(languageNavigator.Value);
channel.Language = language;
}
catch (ArgumentException)
{
System.Diagnostics.Trace.TraceWarning("Rss092SyndicationResourceAdapter unable to determine CultureInfo with a name of {0}.", languageNavigator.Value);
}
}
XPathNavigator imageNavigator = navigator.SelectSingleNode("image", manager);
if (imageNavigator != null)
{
channel.Image = new RssImage();
Rss092SyndicationResourceAdapter.FillImage(channel.Image, imageNavigator, manager, settings);
}
Rss092SyndicationResourceAdapter.FillChannelOptionals(channel, navigator, manager, settings);
Rss092SyndicationResourceAdapter.FillChannelCollections(channel, navigator, manager, settings);
SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(navigator, settings);
adapter.Fill(channel);
}
