/// <summary>
/// Finds a property with the specified XML element information.
/// </summary>
/// <param name="xml">The XML information to find.</param>
/// <returns>
/// A PropertyInfo for the first property found matching the specified
/// information or null if no matches were found.
/// </returns>
public PropertyInfo FindElement(XmlComponent xml)
{
return(this.elements
.Where(e => e.Item1.Equals(xml))
.Select(e => e.Item2)
.FirstOrDefault());
}
/// <summary>
/// Registers the specified type with the specified XML name and
/// namespace URI.
/// </summary>
/// <typeparam name="T">
/// The type of the class to be registered, deriving from
/// <see cref="Element"/>.
/// </typeparam>
/// <param name="xml">The XML information of the element.</param>
/// <exception cref="ArgumentNullException">xml is null.</exception>
/// <exception cref="ArgumentException">
/// The type has already been registered or another type with the
/// same XML name and namespace URI has been already registered.
/// </exception>
public static void Register <T>(XmlComponent xml)
where T : Element
{
Check.IsNotNull(xml, nameof(xml));
RegisterType(xml.Clone(), typeof(T)); // Don't store what the user passed us
}
private IEnumerable <ElementInfo> ExtractPropertyElements(TypeInfo typeInfo)
{
bool IsSerializableProperty(PropertyInfo property)
{
return(property.CanRead &&
!property.GetMethod.IsStatic &&
(property.CanWrite || IsEnumerable(property)));
}
foreach (PropertyInfo property in typeInfo.DeclaredProperties.Where(IsSerializableProperty))
{
KmlAttributeAttribute attribute = GetAttribute <KmlAttributeAttribute>(property);
if (attribute != null)
{
var component = new XmlComponent(null, attribute.AttributeName, null);
// Check if a property has already been registered with the info.
// Ignore later properties - i.e. don't throw an exception.
if (!this.attributes.ContainsKey(component))
{
this.attributes.Add(component, new ElementInfo(property, attribute));
}
}
else
{
KmlElementAttribute kmlElement = GetElement(property);
if (kmlElement != null)
{
yield return(new ElementInfo(property, kmlElement));
}
}
}
}
private static bool WriteStartTag(XmlWriter writer, XmlNamespaceManager manager, Element element, out string ns)
{
ns = null;
// Custom elements take priority over component
if (element is ICustomElement customElement)
{
customElement.CreateStartElement(writer);
if (!customElement.ProcessChildren)
{
return(false); // Don't need to do any more work.
}
}
else
{
XmlComponent component = KmlFactory.FindType(element.GetType());
if (component == null)
{
// We can't handle it so ignore it
System.Diagnostics.Debug.WriteLine("Unknown Element type - please register first." + element.GetType());
return(false);
}
ns = component.NamespaceUri;
string prefix = FindPrefix(manager, ns);
writer.WriteStartElement(prefix, component.Name, component.NamespaceUri);
}
return(true);
}
/// <summary>
/// Finds a property with the specified XML element information.
/// </summary>
/// <param name="xml">The XML information to find.</param>
/// <returns>
/// A PropertyInfo for the first property found matching the specified
/// information or null if no matches were found.
/// </returns>
public PropertyInfo FindElement(XmlComponent xml)
{
var query = from element in _elements
where element.Item1.Equals(xml)
select element.Item2;
return(query.FirstOrDefault());
}
/// <summary>
/// Finds a property with the specified XML attribute information.
/// </summary>
/// <param name="xml">The XML information to find.</param>
/// <returns>
/// A PropertyInfo for the first property found matching the specified
/// information or null if no matches were found.
/// </returns>
public PropertyInfo FindAttribute(XmlComponent xml)
{
if (this.attributes.TryGetValue(xml, out Tuple <PropertyInfo, KmlAttributeAttribute> property))
{
return(property.Item1);
}
return(null);
}
/// <summary>
/// Creates a derived class of <see cref="Element"/> based on the XML
/// information.
/// </summary>
/// <param name="xml">The XML information of the element.</param>
/// <returns>
/// A derived class of <c>Element</c> if the specified information was
/// found; otherwise, null.
/// </returns>
/// <exception cref="System.MemberAccessException">
/// Cannot create an instance of an abstract class, or this member was
/// invoked with a late-binding mechanism.
/// </exception>
/// <exception cref="System.Reflection.TargetInvocationException">
/// The constructor being called throws an exception.
/// </exception>
public static Element CreateElement(XmlComponent xml)
{
if (Types.TryGetValue(xml, out Func <Element> constructor))
{
return(constructor());
}
return(null);
}
/// <summary>
/// Creates a derived class of <see cref="Element"/> based on the XML
/// information.
/// </summary>
/// <param name="xml">The XML information of the element.</param>
/// <returns>
/// A derived class of <c>Element</c> if the specified information was
/// found; otherwise, null.
/// </returns>
/// <exception cref="System.MemberAccessException">
/// Cannot create an instance of an abstract class, or this member was
/// invoked with a late-binding mechanism.
/// </exception>
/// <exception cref="System.Reflection.TargetInvocationException">
/// The constructor being called throws an exception.
/// </exception>
public static Element CreateElement(XmlComponent xml)
{
if (Types.TryGetValue(xml, out Type type))
{
return((Element)Activator.CreateInstance(type));
}
return(null);
}
/// <summary>
/// Registers the specified type with the specified XML name and
/// namespace URI.
/// </summary>
/// <typeparam name="T">
/// The type of the class to be registered, deriving from
/// <see cref="Element"/>.
/// </typeparam>
/// <param name="xml">The XML information of the element.</param>
/// <exception cref="ArgumentNullException">xml is null.</exception>
/// <exception cref="ArgumentException">
/// The type has already been registered or another type with the
/// same XML name and namespace URI has been already registered.
/// </exception>
public static void Register <T>(XmlComponent xml) where T : Element
{
if (xml == null)
{
throw new ArgumentNullException("xml");
}
RegisterType(xml.Clone(), typeof(T)); // Don't store what the user passed us
}
private static void RegisterElement(Type type)
{
KmlElementAttribute element = TypeBrowser.GetElement(type.GetTypeInfo());
if (element != null)
{
var xml = new XmlComponent(null, element.ElementName, element.Namespace);
RegisterType(xml, type);
}
}
private static void SerializeElement(XmlWriter writer, Element element)
{
// Write start tag
XmlComponent component = KmlFactory.FindType(element.GetType());
// Custom elements take priority over component
ICustomElement customElement = element as ICustomElement;
if (customElement != null)
{
customElement.CreateStartElement(writer);
if (!customElement.ProcessChildren)
{
return; // Don't need to to any more work.
}
}
else if (component != null)
{
writer.WriteStartElement(component.Name, component.NamespaceUri);
}
else
{
// We can't handle it so ignore it
System.Diagnostics.Debug.WriteLine("Unknown Element type - please register first." + element.GetType());
return; // Skip
}
// Write the attributes - unknown, serialized then namespaces.
foreach (var att in element.Attributes)
{
writer.WriteAttributeString(att.Prefix, att.Name, att.NamespaceUri, att.Value);
}
WriteAttributes(writer, element);
foreach (var ns in element.Namespaces.GetNamespacesInScope(XmlNamespaceScope.ExcludeXml))
{
writer.WriteAttributeString("xmlns", ns.Key, string.Empty, ns.Value);
}
// Now the text part
WriteData(writer, element.InnerText);
// Now write the elements - serialized, children then unknown children.
WriteElements(writer, element);
SerializeElements(writer, element.OrderedChildren);
SerializeElements(writer, element.Orphans);
// Finished...
writer.WriteEndElement();
}
// Private helper function to ensure both dicionaries are updated.
private static void RegisterType(XmlComponent xml, Type type)
{
if (_names.ContainsKey(type))
{
throw new ArgumentException("Class type has already been registered.");
}
if (_types.ContainsKey(xml))
{
throw new ArgumentException("Another type has been registered with the specified XML qualified name.");
}
_names.Add(type, xml);
_types.Add(xml, type);
}
private static void RegisterAssembly(Assembly assembly)
{
foreach (var type in assembly.GetExportedTypes())
{
if (type.IsSubclassOf(typeof(Element)))
{
KmlElementAttribute element = TypeBrowser.GetElement(type);
if (element != null)
{
var xml = new XmlComponent(null, element.ElementName, element.Namespace);
RegisterType(xml, type);
}
}
}
}
/// <summary>
/// Finds a property with the specified XML element information.
/// </summary>
/// <param name="xml">The XML information to find.</param>
/// <returns>
/// A PropertyInfo for the first property found matching the specified
/// information or null if no matches were found.
/// </returns>
public PropertyInfo FindElement(XmlComponent xml)
{
var query = from element in this.elements
where element.Item1.Equals(xml)
select element.Item2;
var propInfo = query.FirstOrDefault();
// try looking without the namespace
if (propInfo == null)
{
propInfo = this.elements.Where(e => e.Item1.Name == xml.Name).Select(e => e.Item2).FirstOrDefault();
}
return(propInfo);
}
/// <summary>
/// Creates a derived class of <see cref="Element"/> based on the XML
/// information.
/// </summary>
/// <param name="xml">The XML information of the element.</param>
/// <returns>
/// A derived class of <c>Element</c> if the specified information was
/// found; otherwise, null.
/// </returns>
/// <exception cref="System.MemberAccessException">
/// Cannot create an instance of an abstract class, or this member was
/// invoked with a late-binding mechanism.
/// </exception>
/// <exception cref="System.Reflection.TargetInvocationException">
/// The constructor being called throws an exception.
/// </exception>
public static Element CreateElement(XmlComponent xml)
{
Type type;
if (Types.TryGetValue(xml, out type))
{
return((Element)Activator.CreateInstance(type));
}
//check and see if the namespace is wrong but is in the 2.2
if (Kml22ElementTypes.TryGetValue(xml.Name, out type))
{
return((Element)Activator.CreateInstance(type));
}
return(null);
}
private void ExtractAttributes(Type type)
{
if (type == null || type == typeof(object))
{
return; // We've reached the top, now we have to stop
}
// Look at the base type first as the KML schema specifies <sequence>
// This will also find private fields in the base classes, which can't
// be seen through a derived class.
this.ExtractAttributes(type.BaseType);
// Store the found elements here so we can add them in order later
var elements = new List <Tuple <XmlComponent, PropertyInfo, KmlElementAttribute> >();
const BindingFlags PropertyFlags = BindingFlags.DeclaredOnly |
BindingFlags.Instance |
BindingFlags.NonPublic |
BindingFlags.Public;
foreach (var property in type.GetProperties(PropertyFlags))
{
var attribute = GetAttribute(property);
if (attribute != null)
{
XmlComponent component = new XmlComponent(null, attribute.AttributeName, null);
// Check if a property has already been registered with the info.
// Ignore later properties - i.e. don't throw an exception.
if (!_attributes.ContainsKey(component))
{
_attributes.Add(component, Tuple.Create(property, attribute));
}
}
else
{
var element = GetElement(property);
if (element != null)
{
XmlComponent component = new XmlComponent(null, element.ElementName, element.Namespace);
elements.Add(Tuple.Create(component, property, element));
}
}
}
// Now add the elements in order
_elements.AddRange(elements.OrderBy(e => e.Item3.Order));
}
private void ExtractAttributes(Type type)
{
if (type == null || type == typeof(object))
{
return; // We've reached the top, now we have to stop
}
// Look at the base type first as the KML schema specifies <sequence>
// This will also find private fields in the base classes, which can't
// be seen through a derived class.
TypeInfo typeInfo = type.GetTypeInfo();
this.ExtractAttributes(typeInfo.BaseType);
// Store the found elements here so we can add them in order later
var elements = new List <Tuple <XmlComponent, PropertyInfo, KmlElementAttribute> >();
foreach (PropertyInfo property in typeInfo.DeclaredProperties.Where(p => !p.GetMethod.IsStatic))
{
KmlAttributeAttribute attribute = GetAttribute(property);
if (attribute != null)
{
var component = new XmlComponent(null, attribute.AttributeName, null);
// Check if a property has already been registered with the info.
// Ignore later properties - i.e. don't throw an exception.
if (!this.attributes.ContainsKey(component))
{
this.attributes.Add(component, Tuple.Create(property, attribute));
}
}
else
{
KmlElementAttribute element = GetElement(property);
if (element != null)
{
var component = new XmlComponent(null, element.ElementName, element.Namespace);
elements.Add(Tuple.Create(component, property, element));
}
}
}
// Now add the elements in order
this.elements.AddRange(elements.OrderBy((Tuple <XmlComponent, PropertyInfo, KmlElementAttribute> e) => e.Item3.Order));
}
/// <summary>
/// Creates a derived class of <see cref="Element"/> based on the XML
/// information.
/// </summary>
/// <param name="xml">The XML information of the element.</param>
/// <returns>
/// A derived class of <c>Element</c> if the specified information was
/// found; otherwise, null.
/// </returns>
/// <exception cref="System.MemberAccessException">
/// Cannot create an instance of an abstract class, or this member was
/// invoked with a late-binding mechanism.
/// </exception>
/// <exception cref="System.Reflection.TargetInvocationException">
/// The constructor being called throws an exception.
/// </exception>
public static Element CreateElement(XmlComponent xml)
{
if (Types.TryGetValue(xml, out Func <Element> constructor))
{
return(constructor());
}
if (string.IsNullOrEmpty(xml?.Namespace))
{
var comp = new XmlComponent(string.Empty, xml.Name, KmlNamespaces.Kml22Namespace);
if (Types.TryGetValue(xml, out Func <Element> cons))
{
return(cons());
}
}
return(null);
}
/// <summary>
/// Finds a property with the specified XML element information.
/// </summary>
/// <param name="xml">The XML information to find.</param>
/// <returns>
/// A PropertyInfo for the first property found matching the specified
/// information or null if no matches were found.
/// </returns>
public ElementInfo FindElement(XmlComponent xml)
{
this.elements.TryGetValue(xml, out ElementInfo info);
return(info);
}
/// <summary>
/// Finds a property with the specified XML attribute information.
/// </summary>
/// <param name="xml">The XML information to find.</param>
/// <returns>
/// The information for the first property found matching the specified
/// information or null if no matches were found.
/// </returns>
public ElementInfo FindAttribute(XmlComponent xml)
{
this.attributes.TryGetValue(xml, out ElementInfo info);
return(info);
}
