public bool FocusOnNode(IDurable focusRange)
{
if (focusRange == null)
{
return(false);
}
if (EventTreeView == null)
{
return(false);
}
if (EventTreeView.ItemsSource == null)
{
return(false);
}
List <BaseTreeNode> treePath = new List <BaseTreeNode>();
foreach (var node in EventTreeView.ItemsSource)
{
BaseTreeNode baseTreeNode = node as BaseTreeNode;
if (baseTreeNode == null)
{
continue;
}
baseTreeNode.ForEach((curNode, level) =>
{
EventNode treeEventNode = curNode as EventNode;
if (treeEventNode == null)
{
return(true);
}
if (treeEventNode.Entry.Start > focusRange.Finish)
{
return(false);
}
if (treeEventNode.Entry.Contains(focusRange))
{
treePath.Add(curNode);
//find desired node in tree
if (treeEventNode.Entry.Start >= focusRange.Start && treeEventNode.Entry.Finish <= focusRange.Finish)
{
return(false);
}
}
return(true);
});
ItemsControl root = EventTreeView;
int pathElementsCount = treePath.Count;
if (pathElementsCount > 0)
{
//expand path in tree
int index = 0;
for (index = 0; index < (pathElementsCount - 1); index++)
{
BaseTreeNode expandNode = treePath[index];
if (root != null)
{
root = root.ItemContainerGenerator.ContainerFromItem(expandNode) as ItemsControl;
}
treePath[index].IsExpanded = true;
}
BaseTreeNode finalNode = treePath[index];
// select target node
finalNode.IsExpanded = false;
finalNode.IsSelected = true;
// focus on finalNode
if (root != null)
{
root = root.ItemContainerGenerator.ContainerFromItem(finalNode) as ItemsControl;
if (root != null)
{
root.BringIntoView();
}
}
EventTreeView.InvalidateVisual();
return(true);
}
}
return(false);
}
//------------------------------------------------------------------------/
// Messages
//------------------------------------------------------------------------/
protected override void OnWindowEnable()
{
this.treeView = new EventTreeView(this.treeViewState, this.BuildEventTree());
}
