/// <summary>
/// Moves the navigator.
/// </summary>
/// <param name="nav">The nav.</param>
private void MoveNavigator(ObjectXPathProxy nav)
{
m_nodeType = XPathNodeType.Element;
m_currentElem = nav;
m_values = nav.Elements;
m_valueIndex = -1;
}
/// <summary>
/// Activates the dictionary.
/// </summary>
private void ActivateDictionary()
{
List <ObjectXPathProxy> elements = new List <ObjectXPathProxy>();
m_elemDict = new Hashtable();
foreach (DictionaryEntry entry in (IDictionary)binding)
{
if (entry.Value == null)
{
continue;
}
ObjectXPathProxy item =
new ObjectXPathProxy(entry.Value, entry.Value.GetType().Name, this, m_nt);
elements.Add(item);
item.AddSpecialName("key", entry.Key.ToString());
m_elemDict[entry.Key.ToString()] = item;
}
m_elements = (elements.Count != 0) ? elements : null;
}
/// <summary>
/// When overridden in a derived class, moves the <see cref="T:System.Xml.XPath.XPathNavigator"></see> to the next sibling node of the current node.
/// </summary>
/// <returns>
/// true if the <see cref="T:System.Xml.XPath.XPathNavigator"></see> is successful moving to the next sibling node; otherwise, false if there are no more siblings or if the <see cref="T:System.Xml.XPath.XPathNavigator"></see> is currently positioned on an attribute node. If false, the position of the <see cref="T:System.Xml.XPath.XPathNavigator"></see> is unchanged.
/// </returns>
public override bool MoveToNext()
{
if (m_nodeType != XPathNodeType.Element)
{
return(false);
}
ObjectXPathProxy parent = m_currentElem.Parent;
if (parent == null)
{
return(false);
}
bool foundIt = false;
foreach (ObjectXPathProxy sib in parent.Elements)
{
if (foundIt)
{
MoveNavigator(sib);
return(true);
}
if (m_currentElem == sib)
{
foundIt = true;
}
}
return(false);
}
/// <summary>
/// Moves the <see cref="T:System.Xml.XPath.XPathNavigator"></see> to the root node that the current node belongs to.
/// </summary>
public override void MoveToRoot()
{
m_nodeType = XPathNodeType.Root;
m_currentElem = null;
m_values = null;
m_valueIndex = -1;
}
/// <summary>
/// Initializes a new instance of the <see cref="ObjectXPathProxy"/> class.
/// </summary>
/// <param name="bindingObj">The binding obj.</param>
/// <param name="name">The name.</param>
/// <param name="parent">The parent.</param>
/// <param name="nt">The nt.</param>
private ObjectXPathProxy(
object bindingObj, string name, ObjectXPathProxy parent, XmlNameTable nt)
{
binding = bindingObj;
m_parent = parent;
m_nt = nt;
m_name = GetAtomicString(name);
}
/// <summary>
/// Initializes a new instance of the <see cref="ObjectXPathProxy"/> class.
/// </summary>
/// <param name="bindingObj">The binding obj.</param>
/// <param name="name">The name.</param>
/// <param name="parent">The parent.</param>
/// <param name="nt">The nt.</param>
private ObjectXPathProxy(
object bindingObj, string name, ObjectXPathProxy parent, XmlNameTable nt)
{
binding = bindingObj;
m_parent = parent;
m_nt = nt;
m_name = GetAtomicString(name);
}
/// <summary>
/// Determines whether the specified <see cref="T:System.Xml.XPath.XPathNavigator"></see> is a descendant of the current <see cref="T:System.Xml.XPath.XPathNavigator"></see>.
/// </summary>
/// <param name="nav">The <see cref="T:System.Xml.XPath.XPathNavigator"></see> to compare to this <see cref="T:System.Xml.XPath.XPathNavigator"></see>.</param>
/// <returns>
/// Returns true if the specified <see cref="T:System.Xml.XPath.XPathNavigator"></see> is a descendant of the current <see cref="T:System.Xml.XPath.XPathNavigator"></see>; otherwise, false.
/// </returns>
public override bool IsDescendant(XPathNavigator nav)
{
if (nav is ObjectXPathNavigator)
{
ObjectXPathNavigator otherNav = (ObjectXPathNavigator)nav;
// if they're in different graphs, they're not the same
if (this.m_docElem != otherNav.m_docElem)
{
return(false);
}
if (m_nodeType == XPathNodeType.Root && otherNav.m_nodeType != XPathNodeType.Root)
{
// its on my root element - its still a descendant
return(true);
}
// if I'm not on an element, it can't be my descendant
// (attributes and text don't have descendants)
if (m_nodeType != XPathNodeType.Element)
{
return(false);
}
if (this.m_currentElem == otherNav.m_currentElem)
{
// if its on my attribute or content - its still a descendant
return
(m_nodeType == XPathNodeType.Element &&
otherNav.m_nodeType != XPathNodeType.Element);
}
// ok, we need to hunt...
for (ObjectXPathProxy parent = otherNav.m_currentElem.Parent;
parent != null;
parent = parent.Parent)
{
if (parent == this.m_currentElem)
{
return(true);
}
}
}
return(false);
}
/// <summary>
/// When overridden in a derived class, moves the <see cref="T:System.Xml.XPath.XPathNavigator"></see> to the same position as the specified <see cref="T:System.Xml.XPath.XPathNavigator"></see>.
/// </summary>
/// <param name="other">The <see cref="T:System.Xml.XPath.XPathNavigator"></see> positioned on the node that you want to move to.</param>
/// <returns>
/// Returns true if the <see cref="T:System.Xml.XPath.XPathNavigator"></see> is successful moving to the same position as the specified <see cref="T:System.Xml.XPath.XPathNavigator"></see>; otherwise, false. If false, the position of the <see cref="T:System.Xml.XPath.XPathNavigator"></see> is unchanged.
/// </returns>
public override bool MoveTo(XPathNavigator other)
{
if (other is ObjectXPathNavigator)
{
ObjectXPathNavigator otherNav = (ObjectXPathNavigator)other;
m_docElem = otherNav.m_docElem;
m_currentElem = otherNav.m_currentElem;
m_nodeType = otherNav.m_nodeType;
m_values = otherNav.m_values;
m_valueIndex = otherNav.m_valueIndex;
m_nt = otherNav.m_nt;
return(true);
}
return(false);
}
/// <summary>
/// When overridden in a derived class, moves the <see cref="T:System.Xml.XPath.XPathNavigator"></see> to the previous sibling node of the current node.
/// </summary>
/// <returns>
/// Returns true if the <see cref="T:System.Xml.XPath.XPathNavigator"></see> is successful moving to the previous sibling node; otherwise, false if there is no previous sibling node or if the <see cref="T:System.Xml.XPath.XPathNavigator"></see> is currently positioned on an attribute node. If false, the position of the <see cref="T:System.Xml.XPath.XPathNavigator"></see> is unchanged.
/// </returns>
public override bool MoveToPrevious()
{
if (m_nodeType != XPathNodeType.Element)
{
return(false);
}
if (m_nodeType != XPathNodeType.Element)
{
return(false);
}
ObjectXPathProxy parent = m_currentElem.Parent;
if (parent == null)
{
return(false);
}
ObjectXPathProxy previous = null;
foreach (ObjectXPathProxy sib in parent.Elements)
{
if (sib == m_currentElem)
{
if (previous == null)
{
break;
}
MoveNavigator(previous);
return(true);
}
previous = sib;
}
return(false);
}
/// <summary>
/// When overridden in a derived class, moves the <see cref="T:System.Xml.XPath.XPathNavigator"></see> to the parent node of the current node.
/// </summary>
/// <returns>
/// Returns true if the <see cref="T:System.Xml.XPath.XPathNavigator"></see> is successful moving to the parent node of the current node; otherwise, false. If false, the position of the <see cref="T:System.Xml.XPath.XPathNavigator"></see> is unchanged.
/// </returns>
public override bool MoveToParent()
{
if (m_nodeType == XPathNodeType.Root)
{
return(false);
}
if (m_nodeType != XPathNodeType.Element)
{
m_nodeType = XPathNodeType.Element;
return(true);
}
ObjectXPathProxy parent = m_currentElem.Parent;
if (parent == null)
{
return(false);
}
MoveNavigator(parent);
return(true);
}
/// <summary>
/// Activates the dictionary.
/// </summary>
private void ActivateDictionary()
{
List<ObjectXPathProxy> elements = new List<ObjectXPathProxy>();
m_elemDict = new Hashtable();
foreach (DictionaryEntry entry in (IDictionary)binding)
{
if (entry.Value == null)
{
continue;
}
ObjectXPathProxy item =
new ObjectXPathProxy(entry.Value, entry.Value.GetType().Name, this, m_nt);
elements.Add(item);
item.AddSpecialName("key", entry.Key.ToString());
m_elemDict[entry.Key.ToString()] = item;
}
m_elements = (elements.Count != 0) ? elements : null;
}
/// <summary>
/// Moves the navigator.
/// </summary>
/// <param name="nav">The nav.</param>
private void MoveNavigator(ObjectXPathProxy nav)
{
m_nodeType = XPathNodeType.Element;
m_currentElem = nav;
m_values = nav.Elements;
m_valueIndex = -1;
}
/// <summary>
/// Moves the <see cref="T:System.Xml.XPath.XPathNavigator"></see> to the root node that the current node belongs to.
/// </summary>
public override void MoveToRoot()
{
m_nodeType = XPathNodeType.Root;
m_currentElem = null;
m_values = null;
m_valueIndex = -1;
}
/// <summary>
/// When overridden in a derived class, moves the <see cref="T:System.Xml.XPath.XPathNavigator"></see> to the same position as the specified <see cref="T:System.Xml.XPath.XPathNavigator"></see>.
/// </summary>
/// <param name="other">The <see cref="T:System.Xml.XPath.XPathNavigator"></see> positioned on the node that you want to move to.</param>
/// <returns>
/// Returns true if the <see cref="T:System.Xml.XPath.XPathNavigator"></see> is successful moving to the same position as the specified <see cref="T:System.Xml.XPath.XPathNavigator"></see>; otherwise, false. If false, the position of the <see cref="T:System.Xml.XPath.XPathNavigator"></see> is unchanged.
/// </returns>
public override bool MoveTo(XPathNavigator other)
{
if (other is ObjectXPathNavigator)
{
ObjectXPathNavigator otherNav = (ObjectXPathNavigator)other;
m_docElem = otherNav.m_docElem;
m_currentElem = otherNav.m_currentElem;
m_nodeType = otherNav.m_nodeType;
m_values = otherNav.m_values;
m_valueIndex = otherNav.m_valueIndex;
m_nt = otherNav.m_nt;
return true;
}
return false;
}
/// <summary>
/// Initializes a new instance of the <see cref="ObjectXPathNavigator"/> class.
/// </summary>
/// <param name="obj">The obj.</param>
public ObjectXPathNavigator(object obj)
{
m_docElem = new ObjectXPathProxy(obj, m_nt);
m_docElem.AddSpecialName("type", obj.GetType().FullName);
}
/// <summary>
/// Initializes a new instance of the <see cref="ObjectXPathNavigator"/> class.
/// </summary>
/// <param name="obj">The obj.</param>
public ObjectXPathNavigator(object obj)
{
m_docElem = new ObjectXPathProxy(obj, m_nt);
m_docElem.AddSpecialName("type", obj.GetType().FullName);
}
