private bool ShouldProcess(RawDataSourceInfoBase dataSource)
{
if (dataSource == null || !dataSource.IsValidClr)
{
return(false);
}
ElementDataSourceInfo elementDataSourceInfo = dataSource as ElementDataSourceInfo;
return(elementDataSourceInfo != null && elementDataSourceInfo.TargetProperty == null || (!dataSource.HasSource || this.ShouldProcessDataSourceType(dataSource.SourceType)));
}
public override RawDataSourceInfoBase Clone()
{
ElementDataSourceInfo elementDataSourceInfo = new ElementDataSourceInfo(this.TargetElement, (string)null);
elementDataSourceInfo.clrPath = this.clrPath;
elementDataSourceInfo.TargetProperty = this.TargetProperty;
elementDataSourceInfo.TargetPropertyName = this.TargetPropertyName;
elementDataSourceInfo.PathSuffix = this.PathSuffix;
elementDataSourceInfo.IsCollectionItem = this.IsCollectionItem;
elementDataSourceInfo.XmlPath = this.XmlPath;
if (this.TargetDataSource != null)
{
elementDataSourceInfo.TargetDataSource = this.TargetDataSource.Clone();
}
return((RawDataSourceInfoBase)elementDataSourceInfo);
}
protected RawDataSourceInfoBase CombineDataSources(RawDataSourceInfoBase inheritedDataContext, RawDataSourceInfoBase localDataContext)
{
if (localDataContext == null)
{
return(inheritedDataContext);
}
if (!localDataContext.IsValid || localDataContext.HasSource)
{
return(localDataContext);
}
ElementDataSourceInfo elementDataSourceInfo = localDataContext as ElementDataSourceInfo;
RawDataSourceInfoBase localSource;
if (elementDataSourceInfo == null)
{
localSource = inheritedDataContext == null || !inheritedDataContext.IsValid ? localDataContext : inheritedDataContext.CombineWith(localDataContext);
}
else
{
DataBindingProcessingContext context;
if (!this.namedElementDataContexts.TryGetValue(elementDataSourceInfo.RootElement, out context))
{
localSource = (RawDataSourceInfoBase)elementDataSourceInfo;
}
else
{
DataBindingProcessor.DataContextWalker dataContextWalker = new DataBindingProcessor.DataContextWalker(context, (IProperty)null, this.namedElementDataContexts);
localSource = this.DataContextEvaluator.UnwindElementNameBinding((IDataContextAncestorWalker)dataContextWalker, (RawDataSourceInfoBase)elementDataSourceInfo);
if (!(localSource is ElementDataSourceInfo))
{
this.DataContextEvaluator.MoveUpIfDataContextLocation((IDataContextAncestorWalker)dataContextWalker);
if (dataContextWalker.CurrentContext != null)
{
localSource = dataContextWalker.CurrentContext.DataContext.CombineWith(localSource);
}
}
}
}
return(localSource);
}
public override RawDataSourceInfoBase CombineWith(RawDataSourceInfoBase localSource)
{
if (localSource == null)
{
return((RawDataSourceInfoBase)this);
}
if (!this.IsValid || !localSource.IsValid || (localSource.SourceNode != null || localSource is ElementDataSourceInfo))
{
return(localSource);
}
RawDataSourceInfo rawDataSourceInfo = (RawDataSourceInfo)localSource;
if (rawDataSourceInfo.IsEmpty)
{
return((RawDataSourceInfoBase)this);
}
ElementDataSourceInfo elementDataSourceInfo = (ElementDataSourceInfo)this.Clone();
elementDataSourceInfo.AppendClrPath(rawDataSourceInfo.ClrPath);
elementDataSourceInfo.XmlPath = localSource.XmlPath;
return((RawDataSourceInfoBase)elementDataSourceInfo);
}
private void ProcessBinding(DataBindingProcessingContext context)
{
RawDataSourceInfoBase bindingAsDataSource = this.GetBindingAsDataSource(context);
if (bindingAsDataSource == null || !bindingAsDataSource.IsValid)
{
return;
}
if (!bindingAsDataSource.HasSource && context.Scope != ProcessingContextScope.ResourceDictionary)
{
ElementDataSourceInfo bindingInfo = bindingAsDataSource as ElementDataSourceInfo;
if (bindingInfo != null)
{
this.pendingBindings.Add(new DataBindingProcessor.PendingBindingInfo(context, bindingInfo));
}
}
if (!this.ShouldProcessDataSourceType(bindingAsDataSource.SourceType))
{
return;
}
this.HandleBinding(context, bindingAsDataSource);
}
public PendingBindingInfo(DataBindingProcessingContext bindingContext, ElementDataSourceInfo bindingInfo)
{
this.BindingContext = bindingContext;
this.BindingInfo = bindingInfo;
}
private RawDataSourceInfoBase MoveToElementNameBinding(IDataContextAncestorWalker walker, ElementDataSourceInfo elementBinding)
{
if (walker.CurrentNode == null || elementBinding == null || elementBinding.RootTargetProperty == null)
{
return((RawDataSourceInfoBase)null);
}
if (this.visitedLocations.IsVisited(walker))
{
return((RawDataSourceInfoBase)RawDataSourceInfo.Invalid);
}
this.OnDataSourceFound(walker.CurrentNode, walker.CurrentProperty);
if (!walker.MoveTo(elementBinding.RootElement, elementBinding.RootTargetProperty, true))
{
return((RawDataSourceInfoBase)null);
}
DocumentNode dataSourceNode = elementBinding.RootElement.Properties[(IPropertyId)elementBinding.RootTargetProperty];
RawDataSourceInfoBase dataSourceInfoBase = dataSourceNode != null?DataContextHelper.GetRawDataSourceInfo(dataSourceNode) : (RawDataSourceInfoBase)RawDataSourceInfo.NewEmpty;
if (dataSourceInfoBase.IsValid)
{
dataSourceInfoBase.AppendClrPath(elementBinding.NormalizedClrPath);
}
return(dataSourceInfoBase);
}
