/// <summary>
/// Loads this <see cref="OpmlOutline"/> using the supplied <see cref="XPathNavigator"/> and <see cref="SyndicationResourceLoadSettings"/>.
/// </summary>
/// <param name="source">The <see cref="XPathNavigator"/> to extract information from.</param>
/// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> used to configure the load operation.</param>
/// <returns><b>true</b> if the <see cref="OpmlOutline"/> 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="OpmlOutline"/>.
/// </remarks>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> 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>
public bool Load(XPathNavigator source, SyndicationResourceLoadSettings settings)
{
bool wasLoaded = false;
Guard.ArgumentNotNull(source, "source");
if (source.HasAttributes)
{
XPathNavigator attributesNavigator = source.CreateNavigator();
if (attributesNavigator.MoveToFirstAttribute())
{
if (this.LoadAttribute(attributesNavigator))
{
wasLoaded = true;
}
while (attributesNavigator.MoveToNextAttribute())
{
if (this.LoadAttribute(attributesNavigator))
{
wasLoaded = true;
}
}
}
}
if (source.HasChildren)
{
XPathNodeIterator outlinesIterator = source.Select("outline");
if (outlinesIterator != null && outlinesIterator.Count > 0)
{
while (outlinesIterator.MoveNext())
{
OpmlOutline outline = new OpmlOutline();
if (outline.Load(outlinesIterator.Current, settings))
{
this.Outlines.Add(outline);
wasLoaded = true;
}
}
}
}
SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(source, settings);
adapter.Fill(this);
return(wasLoaded);
}
/// <summary>
/// Loads this <see cref="OpmlOutline"/> 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="OpmlOutline"/> 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="OpmlOutline"/>.
/// </remarks>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
public bool Load(XPathNavigator source)
{
bool wasLoaded = false;
Guard.ArgumentNotNull(source, "source");
if (source.HasAttributes)
{
XPathNavigator attributesNavigator = source.CreateNavigator();
if (attributesNavigator.MoveToFirstAttribute())
{
if (this.LoadAttribute(attributesNavigator))
{
wasLoaded = true;
}
while (attributesNavigator.MoveToNextAttribute())
{
if (this.LoadAttribute(attributesNavigator))
{
wasLoaded = true;
}
}
}
}
if (source.HasChildren)
{
XPathNodeIterator outlinesIterator = source.Select("outline");
if (outlinesIterator != null && outlinesIterator.Count > 0)
{
while (outlinesIterator.MoveNext())
{
OpmlOutline outline = new OpmlOutline();
if (outline.Load(outlinesIterator.Current))
{
this.Outlines.Add(outline);
wasLoaded = true;
}
}
}
}
return(wasLoaded);
}
/// <summary>
/// Loads this <see cref="OpmlOutline"/> using the supplied <see cref="XPathNavigator"/> and <see cref="SyndicationResourceLoadSettings"/>.
/// </summary>
/// <param name="source">The <see cref="XPathNavigator"/> to extract information from.</param>
/// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> used to configure the load operation.</param>
/// <returns><b>true</b> if the <see cref="OpmlOutline"/> 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="OpmlOutline"/>.
/// </remarks>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> 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>
public bool Load(XPathNavigator source, SyndicationResourceLoadSettings settings)
{
//------------------------------------------------------------
// Local members
//------------------------------------------------------------
bool wasLoaded = false;
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(source, "source");
//------------------------------------------------------------
// Attempt to extract syndication information
//------------------------------------------------------------
if (source.HasAttributes)
{
XPathNavigator attributesNavigator = source.CreateNavigator();
if (attributesNavigator.MoveToFirstAttribute())
{
//------------------------------------------------------------
// Extract first attribute
//------------------------------------------------------------
if (this.LoadAttribute(attributesNavigator))
{
wasLoaded = true;
}
//------------------------------------------------------------
// Enumerate through additional attributes
//------------------------------------------------------------
while (attributesNavigator.MoveToNextAttribute())
{
if (this.LoadAttribute(attributesNavigator))
{
wasLoaded = true;
}
}
}
}
if (source.HasChildren)
{
XPathNodeIterator outlinesIterator = source.Select("outline");
if (outlinesIterator != null && outlinesIterator.Count > 0)
{
while (outlinesIterator.MoveNext())
{
OpmlOutline outline = new OpmlOutline();
if (outline.Load(outlinesIterator.Current, settings))
{
this.Outlines.Add(outline);
wasLoaded = true;
}
}
}
}
//------------------------------------------------------------
// Attempt to extract syndication extension information
//------------------------------------------------------------
SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(source, settings);
adapter.Fill(this);
return wasLoaded;
}
/// <summary>
/// Modifies the <see cref="OpmlDocument"/> to match the data source.
/// </summary>
/// <param name="resource">The <see cref="OpmlDocument"/> to be filled.</param>
/// <exception cref="ArgumentNullException">The <paramref name="resource"/> is a null reference (Nothing in Visual Basic).</exception>
public void Fill(OpmlDocument resource)
{
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(resource, "resource");
//------------------------------------------------------------
// Create namespace resolver
//------------------------------------------------------------
XmlNamespaceManager manager = new XmlNamespaceManager(this.Navigator.NameTable);
//------------------------------------------------------------
// Attempt to fill syndication resource
//------------------------------------------------------------
XPathNavigator documentNavigator = this.Navigator.SelectSingleNode("opml", manager);
if (documentNavigator != null)
{
XPathNavigator headNavigator = documentNavigator.SelectSingleNode("head", manager);
if (headNavigator != null)
{
resource.Head.Load(headNavigator, this.Settings);
}
XPathNodeIterator outlineIterator = documentNavigator.Select("body/outline", manager);
if (outlineIterator != null && outlineIterator.Count > 0)
{
int counter = 0;
while (outlineIterator.MoveNext())
{
OpmlOutline outline = new OpmlOutline();
counter++;
if (outline.Load(outlineIterator.Current, this.Settings))
{
if (this.Settings.RetrievalLimit != 0 && counter > this.Settings.RetrievalLimit)
{
break;
}
((Collection<OpmlOutline>)resource.Outlines).Add(outline);
}
}
}
SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(documentNavigator, this.Settings);
adapter.Fill(resource, manager);
}
}