public static int CheckTreeWalking(DependencyObject parent, bool checkForValidationErrors, bool leafFirst, bool logicalInsteadOfVisualTreeScan)
{
IEnumerator <DependencyObject> enumerator;
enumerator = checkForValidationErrors
? GetElementsWithErrors(parent, true, leafFirst, logicalInsteadOfVisualTreeScan).GetEnumerator()
: VisualLogicalTreeWalkHelper.GetElements(parent, true, leafFirst, logicalInsteadOfVisualTreeScan).GetEnumerator();
enumerator.MoveNext(); // first
int size = 0;
foreach (DependencyObject obj in checkForValidationErrors
? GetElementsWithErrors(parent, false, leafFirst, logicalInsteadOfVisualTreeScan)
: VisualLogicalTreeWalkHelper.GetElements(parent, false, leafFirst, logicalInsteadOfVisualTreeScan))
{
size++;
Debug.Assert(ReferenceEquals(obj, enumerator.Current), "Tree element differs !");
enumerator.MoveNext();
}
return(size);
}
public static DependencyObject GetFirstElementWithErrors(DependencyObject parent, bool nonRecursiveTreeParsingAlgorithm, bool leafFirst, bool logicalInsteadOfVisualTreeScan)
{
if (leafFirst)
{
if (nonRecursiveTreeParsingAlgorithm)
{
foreach (
DependencyObject errorObj in
FilterElementsWithErrors(VisualLogicalTreeWalkHelper.WalkLeafFirst_NonRecursive(parent, logicalInsteadOfVisualTreeScan))
)
{
return(errorObj);
}
}
else
{
foreach (
DependencyObject errorObj in
FilterElementsWithErrors(VisualLogicalTreeWalkHelper.WalkLeafFirst_Recursive(parent, logicalInsteadOfVisualTreeScan)))
{
return(errorObj);
}
}
}
else
{
if (nonRecursiveTreeParsingAlgorithm)
{
foreach (
DependencyObject errorObj in
FilterElementsWithErrors(VisualLogicalTreeWalkHelper.WalkDepthFirst_NonRecursive(parent, logicalInsteadOfVisualTreeScan))
)
{
return(errorObj);
}
}
else
{
foreach (
DependencyObject errorObj in
FilterElementsWithErrors(VisualLogicalTreeWalkHelper.WalkDepthFirst_Recursive(parent, logicalInsteadOfVisualTreeScan)))
{
return(errorObj);
}
}
}
return(null);
}
public static IEnumerable <DependencyObject> GetElementsWithErrors(DependencyObject parent, bool nonRecursiveTreeParsingAlgorithm, bool leafFirst, bool logicalInsteadOfVisualTreeScan)
{
if (leafFirst)
{
if (nonRecursiveTreeParsingAlgorithm)
{
return(FilterElementsWithErrors(VisualLogicalTreeWalkHelper.WalkLeafFirst_NonRecursive(parent, logicalInsteadOfVisualTreeScan)));
}
return(FilterElementsWithErrors(VisualLogicalTreeWalkHelper.WalkLeafFirst_Recursive(parent, logicalInsteadOfVisualTreeScan)));
}
if (nonRecursiveTreeParsingAlgorithm)
{
return(FilterElementsWithErrors(VisualLogicalTreeWalkHelper.WalkDepthFirst_NonRecursive(parent, logicalInsteadOfVisualTreeScan)));
}
return(FilterElementsWithErrors(VisualLogicalTreeWalkHelper.WalkDepthFirst_Recursive(parent, logicalInsteadOfVisualTreeScan)));
}
private void ReportAllErrors()
{
if (m_DispatcherOperation != null)
{
return;
}
m_DispatcherOperation = Application.Current.Dispatcher.BeginInvoke(
DispatcherPriority.DataBind,
(Action) delegate()
{
foreach (Window w in Application.Current.Windows)
{
IEnumerable <DependencyObject> enumeration = VisualLogicalTreeWalkHelper.GetElements(w, false, false, m_LogicalInsteadOfVisualTreeScan);
foreach (var element in enumeration)
{
checkErrors(element);
}
}
m_DispatcherOperation = null;
});
}