//============================================================
// ICOMPARABLE IMPLEMENTATION
//============================================================
#region CompareTo(object obj)
/// <summary>
/// Compares the current instance with another object of the same type.
/// </summary>
/// <param name="obj">An object to compare with this instance.</param>
/// <returns>A 32-bit signed integer that indicates the relative order of the objects being compared.</returns>
/// <exception cref="ArgumentException">The <paramref name="obj"/> is not the expected <see cref="Type"/>.</exception>
public int CompareTo(object obj)
{
//------------------------------------------------------------
// If target is a null reference, instance is greater
//------------------------------------------------------------
if (obj == null)
{
return(1);
}
//------------------------------------------------------------
// Determine comparison result using property state of objects
//------------------------------------------------------------
AtomContent value = obj as AtomContent;
if (value != null)
{
int result = String.Compare(this.Content, value.Content, StringComparison.OrdinalIgnoreCase);
result = result | String.Compare(this.ContentType, value.ContentType, StringComparison.OrdinalIgnoreCase);
result = result | Uri.Compare(this.Source, value.Source, UriComponents.AbsoluteUri, UriFormat.SafeUnescaped, StringComparison.OrdinalIgnoreCase);
result = result | AtomUtility.CompareCommonObjectAttributes(this, value);
return(result);
}
else
{
throw new ArgumentException(String.Format(null, "obj is not of type {0}, type was found to be '{1}'.", this.GetType().FullName, obj.GetType().FullName), "obj");
}
}
/// <summary>
/// Compares the current instance with another object of the same type.
/// </summary>
/// <param name="obj">An object to compare with this instance.</param>
/// <returns>A 32-bit signed integer that indicates the relative order of the objects being compared.</returns>
/// <exception cref="ArgumentException">The <paramref name="obj"/> is not the expected <see cref="Type"/>.</exception>
public int CompareTo(object obj)
{
if (obj == null)
{
return(1);
}
AtomContent value = obj as AtomContent;
if (value != null)
{
int result = String.Compare(this.Content, value.Content, StringComparison.OrdinalIgnoreCase);
result = result | String.Compare(this.ContentType, value.ContentType, StringComparison.OrdinalIgnoreCase);
result = result | Uri.Compare(this.Source, value.Source, UriComponents.AbsoluteUri, UriFormat.SafeUnescaped, StringComparison.OrdinalIgnoreCase);
result = result | AtomUtility.CompareCommonObjectAttributes(this, value);
return(result);
}
else
{
throw new ArgumentException(String.Format(null, "obj is not of type {0}, type was found to be '{1}'.", this.GetType().FullName, obj.GetType().FullName), "obj");
}
}
/// <summary>
/// Creates a <see cref="AtomContent"/> using the supplied <see cref="XPathNavigator"/>.
/// </summary>
/// <param name="source">The <see cref="XPathNavigator"/> to extract information from.</param>
/// <param name="manager">The <see cref="XmlNamespaceManager"/> used to resolve XML namespace prefixes.</param>
/// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> used to configure the fill operation.</param>
/// <returns>A <see cref="AtomContent"/> instance initialized using the supplied <paramref name="source"/>.</returns>
/// <remarks>
/// This method expects the supplied <paramref name="source"/> to be positioned on the XML element that represents a Atom 0.3 Content construct.
/// </remarks>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> 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 AtomContent CreateContent(XPathNavigator source, XmlNamespaceManager manager, SyndicationResourceLoadSettings settings)
{
//------------------------------------------------------------
// Local members
//------------------------------------------------------------
AtomContent content = new AtomContent();
string modeAttribute = String.Empty;
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(source, "source");
Guard.ArgumentNotNull(manager, "manager");
Guard.ArgumentNotNull(settings, "settings");
//------------------------------------------------------------
// Attempt to extract common attributes information
//------------------------------------------------------------
AtomUtility.FillCommonObjectAttributes(content, source);
//------------------------------------------------------------
// Attempt to extract syndication information
//------------------------------------------------------------
if (source.HasAttributes)
{
string typeAttribute = source.GetAttribute("type", String.Empty);
modeAttribute = source.GetAttribute("mode", String.Empty);
if (!String.IsNullOrEmpty(typeAttribute))
{
content.ContentType = typeAttribute;
}
}
if (String.Compare(modeAttribute, "xml", StringComparison.OrdinalIgnoreCase) == 0)
{
XPathNavigator xhtmlDivNavigator = source.SelectSingleNode("xhtml:div", manager);
if (xhtmlDivNavigator != null && !String.IsNullOrEmpty(xhtmlDivNavigator.Value))
{
content.Content = xhtmlDivNavigator.Value;
}
else if (!String.IsNullOrEmpty(source.Value))
{
content.Content = source.Value;
}
}
else if (!String.IsNullOrEmpty(source.Value))
{
content.Content = source.Value;
}
SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(source, settings);
adapter.Fill(content, manager);
return content;
}