/// <summary>
/// Finds the schema given the xml element path.
/// </summary>
public XmlSchemaCompletionData FindSchema(XmlElementPath path)
{
if (path.Elements.Count > 0) {
string namespaceUri = path.Elements[0].Namespace;
if (namespaceUri.Length > 0) {
var result = schemaCompletionDataItems[namespaceUri];
if (result == null && defaultSchemaCompletionData.NamespaceUri == namespaceUri) result = defaultSchemaCompletionData;
return result;
} else if (defaultSchemaCompletionData != null) {
// Use the default schema namespace if none
// specified in a xml element path, otherwise
// we will not find any attribute or element matches
// later.
foreach (QualifiedName name in path.Elements) {
if (name.Namespace.Length == 0) {
name.Namespace = defaultSchemaCompletionData.NamespaceUri;
}
}
return defaultSchemaCompletionData;
}
}
return null;
}
ICompletionData[] GetChildElementCompletionData(XmlElementPath path)
{
ICompletionData[] completionData = null;
XmlSchemaCompletionData schema = FindSchema(path);
if (schema != null) {
completionData = schema.GetChildElementCompletionData(path);
}
return completionData;
}
ICompletionData[] GetAttributeValueCompletionData(XmlElementPath path, string name)
{
ICompletionData[] completionData = null;
XmlSchemaCompletionData schema = FindSchema(path);
if (schema != null) {
completionData = schema.GetAttributeValueCompletionData(path, name);
}
return completionData;
}
/// <summary>
/// Gets the child element completion data for the xml element that exists
/// at the end of the specified path.
/// </summary>
public ICompletionData[] GetChildElementCompletionData(XmlElementPath path)
{
XmlCompletionDataCollection data = new XmlCompletionDataCollection();
// Locate matching element.
XmlSchemaElement element = FindElement(path);
// Get completion data.
if (element != null)
{
data = GetChildElementCompletionData(element, path.Elements.LastPrefix);
}
return data.ToArray();
}
/// <summary>
/// Gets the autocomplete data for the specified attribute value.
/// </summary>
public ICompletionData[] GetAttributeValueCompletionData(XmlElementPath path, string name)
{
XmlCompletionDataCollection data = new XmlCompletionDataCollection();
// Locate matching element.
XmlSchemaElement element = FindElement(path);
// Get completion data.
if (element != null)
{
data = GetAttributeValueCompletionData(element, name);
}
return data.ToArray();
}
/// <summary>
/// Gets the attribute completion data for the xml element that exists
/// at the end of the specified path.
/// </summary>
public ICompletionData[] GetAttributeCompletionData(XmlElementPath path)
{
XmlCompletionDataCollection data = new XmlCompletionDataCollection();
// Locate matching element.
XmlSchemaElement element = FindElement(path);
// Get completion data.
if (element != null)
{
prohibitedAttributes.Clear();
data = GetAttributeCompletionData(element);
}
return data.ToArray();
}
/// <summary>
/// Finds the element that exists at the specified path.
/// </summary>
/// <remarks>This method is not used when generating completion data,
/// but is a useful method when locating an element so we can jump
/// to its schema definition.</remarks>
/// <returns><see langword="null"/> if no element can be found.</returns>
public virtual XmlSchemaElement FindElement(XmlElementPath path)
{
XmlSchemaElement element = null;
for (int i = 0; i < path.Elements.Count; ++i)
{
QualifiedName name = path.Elements[i];
if (i == 0)
{
// Look for root element.
element = FindElement(name);
if (element == null)
{
break;
}
}
else
{
element = FindChildElement(element, name);
if (element == null)
{
break;
}
}
}
return element;
}
