/// <summary>
/// Constructor
/// </summary>
/// <param name="targets">The target dictionary used to resolve links</param>
public LinkTextResolver(TargetTypeDictionary targets)
{
this.targets = targets;
}
//=====================================================================
/// <inheritdoc />
public override void Initialize(XPathNavigator configuration)
{
TargetDictionary newTargets;
ReferenceLinkType type;
string attrValue, id;
targets = new TargetTypeDictionary();
resolver = new LinkTextResolver(targets);
// Get the shared instances dictionary. Create it if it doesn't exist.
if(BuildComponentCore.Data.ContainsKey(SharedReferenceTargetsId))
sharedTargets = BuildComponentCore.Data[SharedReferenceTargetsId] as Dictionary<string, TargetDictionary>;
if(sharedTargets == null)
BuildComponentCore.Data[SharedReferenceTargetsId] = sharedTargets = new Dictionary<string, TargetDictionary>();
// base-url is an xpath expression applied against the current document to pick up the save location of the
// document. If specified, local links will be made relative to the base-url.
string baseUrlValue = configuration.GetAttribute("base-url", String.Empty);
if(!String.IsNullOrEmpty(baseUrlValue))
baseUrl = XPathExpression.Compile(baseUrlValue);
// hrefFormat is a string format that is used to format the value of local href attributes. The
// default is "{0}.htm" if not specified.
hrefFormat = (string)configuration.Evaluate("string(hrefFormat/@value)");
if(String.IsNullOrWhiteSpace(hrefFormat))
hrefFormat = "{0}.htm";
// The container XPath can be replaced; this is useful
string containerValue = configuration.GetAttribute("container", String.Empty);
if(!String.IsNullOrEmpty(containerValue))
XmlTargetDictionaryUtilities.ContainerExpression = containerValue;
XPathNodeIterator targetsNodes = configuration.Select("targets");
#if DEBUG
base.WriteMessage(MessageLevel.Diagnostic, "Loading reference link target info");
DateTime startLoad = DateTime.Now;
#endif
foreach(XPathNavigator targetsNode in targetsNodes)
{
// Get target type
attrValue = targetsNode.GetAttribute("type", String.Empty);
if(String.IsNullOrEmpty(attrValue))
base.WriteMessage(MessageLevel.Error, "Each targets element must have a type attribute " +
"that specifies which type of links to create");
if(!Enum.TryParse<ReferenceLinkType>(attrValue, true, out type))
base.WriteMessage(MessageLevel.Error, "'{0}' is not a supported reference link type",
attrValue);
// Check for shared instance by ID. If not there, create it and add it.
id = targetsNode.GetAttribute("id", String.Empty);
if(!sharedTargets.TryGetValue(id, out newTargets))
{
this.WriteMessage(MessageLevel.Info, "Loading {0} reference link type targets", type);
newTargets = this.CreateTargetDictionary(targetsNode);
sharedTargets[newTargets.DictionaryId] = newTargets;
}
targets.Add(type, newTargets);
}
#if DEBUG
TimeSpan loadTime = (DateTime.Now - startLoad);
base.WriteMessage(MessageLevel.Diagnostic, "Load time: {0} seconds", loadTime.TotalSeconds);
// Dump targets for comparison to other versions
// targets.DumpTargetDictionary(Path.GetFullPath("TargetDictionary.xml"));
// Serialization test
// targets.SerializeDictionary(Directory.GetCurrentDirectory());
#endif
// Getting the count from a database cache can be expensive so only report it if it will be seen
if(base.BuildAssembler.VerbosityLevel == MessageLevel.Info)
base.WriteMessage(MessageLevel.Info, "{0} total reference link targets", targets.Count);
if(targets.NeedsMsdnResolver)
{
base.WriteMessage(MessageLevel.Info, "Creating MSDN URL resolver");
msdnResolver = this.CreateMsdnResolver(configuration);
string localeValue = (string)configuration.Evaluate("string(locale/@value)");
if(msdnResolver != null && !String.IsNullOrWhiteSpace(localeValue))
msdnResolver.Locale = localeValue;
}
linkTarget = (string)configuration.Evaluate("string(linkTarget/@value)");
if(String.IsNullOrWhiteSpace(linkTarget))
linkTarget = "_blank";
}