/// <summary>
/// Initializes the supplied <see cref="RssChannel"/> optional entities 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 FillChannelOptionals(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 copyrightNavigator = navigator.SelectSingleNode("copyright", manager);
XPathNavigator managingEditorNavigator = navigator.SelectSingleNode("managingEditor", manager);
XPathNavigator webMasterNavigator = navigator.SelectSingleNode("webMaster", manager);
XPathNavigator ratingNavigator = navigator.SelectSingleNode("rating", manager);
XPathNavigator publicationNavigator = navigator.SelectSingleNode("pubDate", manager);
XPathNavigator lastBuildDateNavigator = navigator.SelectSingleNode("lastBuildDate", manager);
XPathNavigator textInputNavigator = navigator.SelectSingleNode("textInput", manager);
XPathNavigator cloudNavigator = navigator.SelectSingleNode("cloud", manager);
if (copyrightNavigator != null)
{
channel.Copyright = copyrightNavigator.Value;
}
if (managingEditorNavigator != null)
{
channel.ManagingEditor = managingEditorNavigator.Value;
}
if (webMasterNavigator != null)
{
channel.Webmaster = webMasterNavigator.Value;
}
if (ratingNavigator != null)
{
channel.Rating = ratingNavigator.Value;
}
if (publicationNavigator != null)
{
DateTime publicationDate;
if (SyndicationDateTimeUtility.TryParseRfc822DateTime(publicationNavigator.Value, out publicationDate))
{
channel.PublicationDate = publicationDate;
}
}
if (lastBuildDateNavigator != null)
{
DateTime lastBuildDate;
if (SyndicationDateTimeUtility.TryParseRfc822DateTime(lastBuildDateNavigator.Value, out lastBuildDate))
{
channel.LastBuildDate = lastBuildDate;
}
}
if (textInputNavigator != null)
{
channel.TextInput = new RssTextInput();
Rss092SyndicationResourceAdapter.FillTextInput(channel.TextInput, textInputNavigator, manager, settings);
}
if (cloudNavigator != null)
{
channel.Cloud = new RssCloud();
Rss092SyndicationResourceAdapter.FillCloud(channel.Cloud, cloudNavigator, manager, settings);
}
}
