public virtual TreeItem Construct(object target, TreeItem?parent)
{
TreeItem treeItem;
switch (target)
{
case AutomationPeer automationPeer:
treeItem = new AutomationPeerTreeItem(automationPeer, parent, this);
break;
case ResourceDictionary resourceDictionary:
treeItem = new ResourceDictionaryTreeItem(resourceDictionary, parent, this);
break;
case Application application:
treeItem = new ApplicationTreeItem(application, parent, this);
break;
case Window window:
treeItem = new WindowTreeItem(window, parent, this);
break;
case Popup popup:
treeItem = new PopupTreeItem(popup, parent, this);
break;
case DependencyObject dependencyObject:
treeItem = new DependencyObjectTreeItem(dependencyObject, parent, this);
break;
default:
treeItem = new TreeItem(target, parent, this);
break;
}
treeItem.Reload();
if (parent is null)
{
foreach (var child in treeItem.Children)
{
if (child is ResourceDictionaryTreeItem)
{
continue;
}
child.ExpandTo();
}
}
return(treeItem);
}
protected override void ReloadCore()
{
var order = 0;
foreach (var mergedDictionary in this.dictionary.MergedDictionaries)
{
var resourceDictionaryItem = new ResourceDictionaryTreeItem(mergedDictionary, this, this.TreeService)
{
SortOrder = order
};
resourceDictionaryItem.Reload();
this.Children.Add(resourceDictionaryItem);
++order;
}
foreach (var key in this.dictionary.Keys)
{
object target;
try
{
target = this.dictionary[key];
}
catch (XamlParseException)
{
// sometimes you can get a XamlParseException ... because the xaml you are Snoop(ing) is bad.
// e.g. I got this once when I was Snoop(ing) some xaml that was referring to an image resource that was no longer there.
// in this case, just continue to the next resource in the dictionary.
continue;
}
if (target == null)
{
// you only get a XamlParseException once. the next time through target just comes back null.
// in this case, just continue to the next resource in the dictionary (as before).
continue;
}
this.Children.Add(new ResourceItem(target, key, this, this.TreeService));
}
}
