//============================================================
// 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
//------------------------------------------------------------
OpmlOwner value = obj as OpmlOwner;
if (value != null)
{
int result = String.Compare(this.EmailAddress, value.EmailAddress, StringComparison.OrdinalIgnoreCase);
result = result | Uri.Compare(this.Id, value.Id, UriComponents.AbsoluteUri, UriFormat.SafeUnescaped, StringComparison.OrdinalIgnoreCase);
result = result | String.Compare(this.Name, value.Name, StringComparison.OrdinalIgnoreCase);
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);
}
OpmlOwner value = obj as OpmlOwner;
if (value != null)
{
int result = String.Compare(this.EmailAddress, value.EmailAddress, StringComparison.OrdinalIgnoreCase);
result = result | Uri.Compare(this.Id, value.Id, UriComponents.AbsoluteUri, UriFormat.SafeUnescaped, StringComparison.OrdinalIgnoreCase);
result = result | String.Compare(this.Name, value.Name, StringComparison.OrdinalIgnoreCase);
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");
}
}
//============================================================
// PUBLIC METHODS
//============================================================
#region Load(XPathNavigator source)
/// <summary>
/// Loads this <see cref="OpmlHead"/> using the supplied <see cref="XPathNavigator"/>.
/// </summary>
/// <param name="source">The <see cref="XPathNavigator"/> to extract information from.</param>
/// <returns><b>true</b> if the <see cref="OpmlHead"/> was initialized using the supplied <paramref name="source"/>, otherwise <b>false</b>.</returns>
/// <remarks>
/// This method expects the supplied <paramref name="source"/> to be positioned on the XML element that represents a <see cref="OpmlHead"/>.
/// </remarks>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
public bool Load(XPathNavigator source)
{
//------------------------------------------------------------
// Local members
//------------------------------------------------------------
bool wasLoaded = false;
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(source, "source");
//------------------------------------------------------------
// Attempt to extract syndication information
//------------------------------------------------------------
XPathNavigator titleNavigator = source.SelectSingleNode("title");
XPathNavigator dateCreatedNavigator = source.SelectSingleNode("dateCreated");
XPathNavigator dateModifiedNavigator = source.SelectSingleNode("dateModified");
XPathNavigator expansionStateNavigator = source.SelectSingleNode("expansionState");
XPathNavigator verticalScrollStateNavigator = source.SelectSingleNode("vertScrollState");
if (titleNavigator != null)
{
this.Title = titleNavigator.Value;
wasLoaded = true;
}
if (dateCreatedNavigator != null)
{
DateTime createdOn;
if (SyndicationDateTimeUtility.TryParseRfc822DateTime(dateCreatedNavigator.Value, out createdOn))
{
this.CreatedOn = createdOn;
wasLoaded = true;
}
}
if (dateModifiedNavigator != null)
{
DateTime modifiedOn;
if (SyndicationDateTimeUtility.TryParseRfc822DateTime(dateModifiedNavigator.Value, out modifiedOn))
{
this.ModifiedOn = modifiedOn;
wasLoaded = true;
}
}
OpmlOwner owner = new OpmlOwner();
if (owner.Load(source))
{
this.Owner = owner;
}
if (expansionStateNavigator != null && !String.IsNullOrEmpty(expansionStateNavigator.Value))
{
if (expansionStateNavigator.Value.Contains(","))
{
string[] expansionStates = expansionStateNavigator.Value.Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
foreach (string expansionState in expansionStates)
{
int state;
if (Int32.TryParse(expansionState.Trim(), System.Globalization.NumberStyles.Integer, System.Globalization.NumberFormatInfo.InvariantInfo, out state))
{
this.ExpansionState.Add(state);
wasLoaded = true;
}
}
}
else
{
int expansionState;
if (Int32.TryParse(expansionStateNavigator.Value, System.Globalization.NumberStyles.Integer, System.Globalization.NumberFormatInfo.InvariantInfo, out expansionState))
{
this.ExpansionState.Add(expansionState);
wasLoaded = true;
}
}
}
if (verticalScrollStateNavigator != null)
{
int verticalScrollState;
if (Int32.TryParse(verticalScrollStateNavigator.Value, System.Globalization.NumberStyles.Integer, System.Globalization.NumberFormatInfo.InvariantInfo, out verticalScrollState))
{
this.VerticalScrollState = verticalScrollState;
wasLoaded = true;
}
}
OpmlWindow window = new OpmlWindow();
if (window.Load(source))
{
this.Window = window;
}
return(wasLoaded);
}
