public bool MoveNext()
{
if (this.endOfAncestorChain)
{
return(false);
}
if (this.moveTo != null)
{
this.current = this.moveTo;
this.moveTo = (DataBindingProcessor.DataContextWalker.ContextLocation)null;
return(true);
}
if (this.MoveNextInternal(ref this.current))
{
return(true);
}
this.Reset();
this.endOfAncestorChain = true;
return(false);
}
private bool MoveNextInternal(ref DataBindingProcessor.DataContextWalker.ContextLocation location)
{
if (location == null)
{
location = new DataBindingProcessor.DataContextWalker.ContextLocation(this.first.Context, this.first.Property);
return(true);
}
if (location.Context.ParentContext != null)
{
DataBindingProcessingContext parentContext = location.Context.ParentContext;
location = new DataBindingProcessor.DataContextWalker.ContextLocation(parentContext, location.Context.Property);
}
else
{
if (location.Context.OuterContext == null)
{
return(false);
}
DataBindingProcessingContext outerContext = location.Context.OuterContext;
location = new DataBindingProcessor.DataContextWalker.ContextLocation(outerContext, outerContext.Property);
}
return(true);
}
public bool MoveTo(DocumentCompositeNode targetNode, IProperty targetProperty, bool makeCurrent)
{
this.endOfAncestorChain = false;
this.moveTo = (DataBindingProcessor.DataContextWalker.ContextLocation)null;
if (this.CurrentNode == targetNode)
{
this.moveTo = new DataBindingProcessor.DataContextWalker.ContextLocation(this.CurrentContext, targetProperty);
}
else
{
DataBindingProcessingContext context;
if (this.namedElementDataContexts.TryGetValue(targetNode, out context))
{
this.moveTo = new DataBindingProcessor.DataContextWalker.ContextLocation(context, targetProperty);
}
}
if (this.moveTo == null)
{
this.moveTo = this.current == null || this.current.Node == null ? new DataBindingProcessor.DataContextWalker.ContextLocation(this.first.Context, this.first.Property) : new DataBindingProcessor.DataContextWalker.ContextLocation(this.current.Context, this.current.Property);
while (this.moveTo.Node != targetNode)
{
if (!this.MoveNextInternal(ref this.moveTo))
{
this.Reset();
this.endOfAncestorChain = true;
return(false);
}
}
this.moveTo = new DataBindingProcessor.DataContextWalker.ContextLocation(this.moveTo.Context, targetProperty);
}
if (makeCurrent)
{
return(this.MoveNext());
}
return(true);
}
public void Reset()
{
this.endOfAncestorChain = false;
this.moveTo = (DataBindingProcessor.DataContextWalker.ContextLocation)null;
this.current = (DataBindingProcessor.DataContextWalker.ContextLocation)null;
}
public DataContextWalker(DataBindingProcessingContext context, IProperty property, Dictionary <DocumentCompositeNode, DataBindingProcessingContext> namedElementDataContexts)
{
this.namedElementDataContexts = namedElementDataContexts;
this.current = this.first = new DataBindingProcessor.DataContextWalker.ContextLocation(context, property);
}