public PropertyPathWalker(string path, bool bindDirectlyToSource, bool bindsToView, bool isDataContextBound)
{
IsDataContextBound = isDataContextBound;
string index;
string propertyName;
string typeName;
PropertyNodeType type;
CollectionViewNode lastCVNode = null;
Path = path;
if (string.IsNullOrEmpty(path) || path == ".")
{
// If the property path is null or empty, we still need to add a CollectionViewNode
// to handle the case where we bind diretly to a CollectionViewSource. i.e. new Binding () { Source = cvs }
// An empty path means we always bind directly to the view.
Node = new CollectionViewNode(bindDirectlyToSource, bindsToView);
lastCVNode = (CollectionViewNode)Node;
FinalNode = Node;
}
else
{
var parser = new PropertyPathParser(path);
while ((type = parser.Step(out typeName, out propertyName, out index)) != PropertyNodeType.None)
{
bool isViewProperty = CollectionViewProperties.Any(prop => prop.Name == propertyName);
IPropertyPathNode node = new CollectionViewNode(bindDirectlyToSource, isViewProperty);
lastCVNode = (CollectionViewNode)node;
switch (type)
{
case PropertyNodeType.AttachedProperty:
case PropertyNodeType.Property:
node.Next = new StandardPropertyPathNode(typeName, propertyName);
break;
case PropertyNodeType.Indexed:
node.Next = new IndexedPropertyPathNode(index);
break;
default:
throw new Exception("Unsupported node type");
}
if (FinalNode != null)
{
FinalNode.Next = node;
}
else
{
Node = node;
}
FinalNode = node.Next;
}
}
lastCVNode.BindToView |= bindsToView;
FinalNode.IsBrokenChanged += delegate(object o, EventArgs e) {
Value = ((PropertyPathNode)o).Value;
var h = IsBrokenChanged;
if (h != null)
{
h(this, EventArgs.Empty);
}
};
FinalNode.ValueChanged += delegate(object o, EventArgs e) {
Value = ((PropertyPathNode)o).Value;
var h = ValueChanged;
if (h != null)
{
h(this, EventArgs.Empty);
}
};
}
public PropertyPathWalker (string path, bool bindDirectlyToSource, bool bindsToView, bool isDataContextBound)
{
IsDataContextBound = isDataContextBound;
string index;
string propertyName;
string typeName;
PropertyNodeType type;
CollectionViewNode lastCVNode = null;
Path = path;
if (string.IsNullOrEmpty (path) || path == ".") {
// If the property path is null or empty, we still need to add a CollectionViewNode
// to handle the case where we bind diretly to a CollectionViewSource. i.e. new Binding () { Source = cvs }
// An empty path means we always bind directly to the view.
Node = new CollectionViewNode (bindDirectlyToSource, bindsToView);
lastCVNode = (CollectionViewNode) Node;
FinalNode = Node;
} else {
var parser = new PropertyPathParser (path);
while ((type = parser.Step (out typeName, out propertyName, out index)) != PropertyNodeType.None) {
bool isViewProperty = CollectionViewProperties.Any (prop => prop.Name == propertyName);
IPropertyPathNode node = new CollectionViewNode (bindDirectlyToSource, isViewProperty);
lastCVNode = (CollectionViewNode) node;
switch (type) {
case PropertyNodeType.AttachedProperty:
case PropertyNodeType.Property:
node.Next = new StandardPropertyPathNode (typeName, propertyName);
break;
case PropertyNodeType.Indexed:
node.Next = new IndexedPropertyPathNode (index);
break;
default:
throw new Exception ("Unsupported node type");
}
if (FinalNode != null)
FinalNode.Next = node;
else
Node = node;
FinalNode = node.Next;
}
}
lastCVNode.BindToView |= bindsToView;
FinalNode.IsBrokenChanged += delegate (object o, EventArgs e) {
Value = ((PropertyPathNode) o).Value;
var h = IsBrokenChanged;
if (h != null)
h (this, EventArgs.Empty);
};
FinalNode.ValueChanged += delegate (object o, EventArgs e) {
Value = ((PropertyPathNode) o).Value;
var h = ValueChanged;
if (h != null)
h (this, EventArgs.Empty);
};
}