private static SceneNode FindHighestDataContextLocationWithoutSourcelessBindings(SceneNode upperBound, SceneNode lowerBound)
{
SceneNode sceneNode1 = (SceneNode)null;
SceneNode childToSkip = lowerBound;
for (SceneNode sceneNode2 = lowerBound; sceneNode2 != upperBound; sceneNode2 = sceneNode2.Parent)
{
if (sceneNode2 == null)
{
return((SceneNode)null);
}
if (DataContextPlacementEvaluator.IsNodeWithoutSourcelessBindings(sceneNode2, sceneNode2 != lowerBound, childToSkip))
{
if (DataContextHelper.GetDataContextProperty(sceneNode2.Type) != null)
{
sceneNode1 = sceneNode2;
childToSkip = sceneNode2;
}
if (sceneNode2.DocumentNode.NameScope != null)
{
break;
}
}
else
{
break;
}
}
return(sceneNode1);
}
public static DataContextInfo FindDataContextPlacement(SceneNode sceneNode, IProperty targetProperty, DataSourceInfo dataSourceInfo)
{
DataContextInfo dataContextInfo = new DataContextEvaluator().Evaluate(sceneNode, (IPropertyId)targetProperty, true);
if (!dataContextInfo.IsValid)
{
return((DataContextInfo)null);
}
if (dataContextInfo.Owner != null)
{
dataContextInfo.DataSourceMatch = dataContextInfo.DataSource.CompareSources(dataSourceInfo);
if (dataContextInfo.DataSourceMatch == DataSourceMatchCriteria.Ignore)
{
using (sceneNode.ViewModel.CreateEditTransaction("", true))
{
if (targetProperty != null)
{
sceneNode.ClearLocalValue((IPropertyId)targetProperty);
}
if (DataContextPlacementEvaluator.IsAnySourcelessBindings(sceneNode))
{
return((DataContextInfo)null);
}
SceneNode sourcelessBindings = DataContextPlacementEvaluator.FindHighestDataContextLocationWithoutSourcelessBindings(dataContextInfo.GetOwnerSceneNode(sceneNode.ViewModel), sceneNode);
if (sourcelessBindings == null)
{
dataContextInfo.Owner = (DocumentCompositeNode)null;
dataContextInfo.Property = (IProperty)null;
dataContextInfo.DataSourceMatch = DataSourceMatchCriteria.Ignore;
}
else
{
dataContextInfo.Owner = (DocumentCompositeNode)sourcelessBindings.DocumentNode;
dataContextInfo.Property = DataContextHelper.GetDataContextProperty(dataContextInfo.Owner.Type);
dataContextInfo.DataSourceMatch = DataSourceMatchCriteria.Any;
}
}
}
}
else
{
SceneNode highestDataContextHost = DataContextPlacementEvaluator.GetHighestDataContextHost(sceneNode);
if (highestDataContextHost == null)
{
return((DataContextInfo)null);
}
dataContextInfo = new DataContextInfo();
dataContextInfo.Owner = (DocumentCompositeNode)highestDataContextHost.DocumentNode;
dataContextInfo.DataSourceMatch = DataSourceMatchCriteria.Any;
}
return(dataContextInfo);
}
private static bool IsNodeWithoutSourcelessBindings(SceneNode sceneNode, bool checkChildren, SceneNode childToSkip)
{
if (DataContextPlacementEvaluator.IsAnySourcelessBindings(sceneNode))
{
return(false);
}
if (!checkChildren)
{
return(true);
}
foreach (SceneNode sceneNode1 in sceneNode.GetAllContent())
{
if (sceneNode1 != childToSkip && !DataContextPlacementEvaluator.IsNodeWithoutSourcelessBindings(sceneNode1, true, (SceneNode)null))
{
return(false);
}
}
return(true);
}
private bool SetSourceAsDataContext(SceneNode target, IPropertyId targetPropertyId, ref DataSchemaNodePath bindingPath, bool testOnly)
{
if (target == null || targetPropertyId == null)
{
return(false);
}
IProperty property = target.ProjectContext.ResolveProperty(targetPropertyId);
if (property == null)
{
return(false);
}
SceneNode sceneNode = target;
IProperty targetProperty = property;
if (DataContextHelper.IsDataContextProperty(target.DocumentNode, (IPropertyId)property))
{
sceneNode = sceneNode.Parent;
targetProperty = (IProperty)null;
if (sceneNode == null || sceneNode.Parent == null)
{
return(false);
}
}
DataSourceInfo dataSourceInfo = new DataSourceInfo(bindingPath);
DataContextInfo contextPlacement = DataContextPlacementEvaluator.FindDataContextPlacement(sceneNode, targetProperty, dataSourceInfo);
if (contextPlacement == null || contextPlacement.DataSourceMatch == DataSourceMatchCriteria.Ignore)
{
return(false);
}
if (contextPlacement.DataSourceMatch == DataSourceMatchCriteria.Exact || contextPlacement.DataSourceMatch == DataSourceMatchCriteria.Compatible)
{
if (contextPlacement.DataSourceMatch == DataSourceMatchCriteria.Exact)
{
bindingPath = bindingPath.GetRelativeNodePath(bindingPath);
}
else if (!string.IsNullOrEmpty(contextPlacement.DataSource.Path))
{
DataSchemaNodePath nodePathFromPath = bindingPath.Schema.GetNodePathFromPath(contextPlacement.DataSource.Path);
bindingPath = nodePathFromPath.GetRelativeNodePath(bindingPath);
}
return(true);
}
if (contextPlacement.DataSourceMatch == DataSourceMatchCriteria.Any && contextPlacement.Owner != null && (contextPlacement.Owner != target.DocumentNode || contextPlacement.Property == null || !contextPlacement.Property.Equals((object)property)))
{
IProperty dataContextProperty = DataContextHelper.GetDataContextProperty(contextPlacement.Owner.Type);
if (dataContextProperty != null)
{
SceneNode ownerSceneNode = contextPlacement.GetOwnerSceneNode(target.ViewModel);
SceneNode dataSource = this.CreateDataSource(ownerSceneNode, bindingPath, true);
if (dataSource != null)
{
if (!testOnly)
{
BindingEditor.SetBindingOrData(ownerSceneNode, (IPropertyId)dataContextProperty, dataSource, bindingPath);
}
return(true);
}
}
}
return(false);
}