//
private static bool iterate(DependencyObject parent, IteratorCallback callback)
{
bool done = false;
if (parent != null)
{
AutomationPeer peer = null;
int count = VisualTreeHelper.GetChildrenCount(parent);
for (int i = 0; i < count && !done; i++)
{
DependencyObject child = VisualTreeHelper.GetChild(parent, i);
if (child != null &&
child is UIElement &&
(peer = UIElementAutomationPeer.CreatePeerForElement((UIElement)child)) != null)
{
done = callback(peer);
}
else if (child != null &&
child is UIElement3D &&
(peer = CreatePeerForElement(((UIElement3D)child))) != null)
{
done = callback(peer);
}
else
{
done = iterate(child, callback);
}
}
}
return(done);
}
//
private static bool iterate(Visual parent, IteratorCallback callback)
{
bool done = false;
AutomationPeer peer = null;
int count = parent.InternalVisualChildrenCount;
for (int i = 0; i < count && !done; i++)
{
Visual child = parent.InternalGetVisualChild(i);
if (child != null &&
child.CheckFlagsAnd(VisualFlags.IsUIElement) &&
(peer = CreatePeerForElement((UIElement)child)) != null)
{
done = callback(peer);
}
else
{
done = iterate(child, callback);
}
}
return(done);
}
//
private static bool iterate(TreeViewItemAutomationPeer logicalParentAp, DependencyObject parent, IteratorCallback callback, ItemPeersStorage <ItemAutomationPeer> dataChildren, ItemPeersStorage <ItemAutomationPeer> oldChildren)
{
bool done = false;
if (parent != null)
{
AutomationPeer peer = null;
int count = VisualTreeHelper.GetChildrenCount(parent);
for (int i = 0; i < count && !done; i++)
{
DependencyObject child = VisualTreeHelper.GetChild(parent, i);
if (child != null &&
child is UIElement)
{
if (child is TreeViewItem)
{
object dataItem = (child as UIElement) != null ? (logicalParentAp.Owner as ItemsControl).GetItemOrContainerFromContainer(child as UIElement) : child;
peer = oldChildren[dataItem];
if (peer == null)
{
peer = logicalParentAp.GetPeerFromWeakRefStorage(dataItem);
if (peer != null)
{
// As cached peer is getting used it must be invalidated.
peer.AncestorsInvalid = false;
peer.ChildrenValid = false;
}
}
if (peer == null)
{
peer = logicalParentAp.CreateItemAutomationPeer(dataItem);
}
//perform hookup so the events sourced from wrapper peer are fired as if from the data item
if (peer != null)
{
AutomationPeer wrapperPeer = (peer as ItemAutomationPeer).GetWrapperPeer();
if (wrapperPeer != null)
{
wrapperPeer.EventsSource = peer;
}
if (dataChildren[dataItem] == null && peer is ItemAutomationPeer)
{
callback(peer);
dataChildren[dataItem] = peer as ItemAutomationPeer;
}
}
}
else
{
peer = CreatePeerForElement((UIElement)child);
if (peer != null)
{
done = callback(peer);
}
}
if (peer == null)
{
done = iterate(logicalParentAp, child, callback, dataChildren, oldChildren);
}
}
else
{
done = iterate(logicalParentAp, child, callback, dataChildren, oldChildren);
}
}
}
return(done);
}
//
private static bool iterate(DependencyObject parent, IteratorCallback callback)
{
bool done = false;
if(parent != null)
{
AutomationPeer peer = null;
int count = VisualTreeHelper.GetChildrenCount(parent);
for (int i = 0; i < count && !done; i++)
{
DependencyObject child = VisualTreeHelper.GetChild(parent, i);
if( child != null
&& child is UIElement
&& (peer = UIElementAutomationPeer.CreatePeerForElement((UIElement)child)) != null )
{
done = callback(peer);
}
else if ( child != null
&& child is UIElement3D
&& (peer = CreatePeerForElement(((UIElement3D)child))) != null )
{
done = callback(peer);
}
else
{
done = iterate(child, callback);
}
}
}
return done;
}
//
private static bool iterate(TreeViewItemAutomationPeer logicalParentAp, DependencyObject parent, IteratorCallback callback, ItemPeersStorage<ItemAutomationPeer> dataChildren, ItemPeersStorage<ItemAutomationPeer> oldChildren)
{
bool done = false;
if (parent != null)
{
AutomationPeer peer = null;
int count = VisualTreeHelper.GetChildrenCount(parent);
for (int i = 0; i < count && !done; i++)
{
DependencyObject child = VisualTreeHelper.GetChild(parent, i);
if (child != null
&& child is UIElement)
{
if (child is TreeViewItem)
{
object dataItem = (child as UIElement) != null ? (logicalParentAp.Owner as ItemsControl).GetItemOrContainerFromContainer(child as UIElement) : child;
peer = oldChildren[dataItem];
if (peer == null)
{
peer = logicalParentAp.GetPeerFromWeakRefStorage(dataItem);
if (peer != null)
{
// As cached peer is getting used it must be invalidated.
peer.AncestorsInvalid = false;
peer.ChildrenValid = false;
}
}
if (peer == null)
{
peer = logicalParentAp.CreateItemAutomationPeer(dataItem);
}
//perform hookup so the events sourced from wrapper peer are fired as if from the data item
if (peer != null)
{
AutomationPeer wrapperPeer = (peer as ItemAutomationPeer).GetWrapperPeer();
if (wrapperPeer != null)
{
wrapperPeer.EventsSource = peer;
}
if (dataChildren[dataItem] == null && peer is ItemAutomationPeer)
{
callback(peer);
dataChildren[dataItem] = peer as ItemAutomationPeer;
}
}
}
else
{
peer = CreatePeerForElement((UIElement)child);
if (peer != null)
done = callback(peer);
}
if(peer == null)
done = iterate(logicalParentAp, child, callback, dataChildren, oldChildren);
}
else
{
done = iterate(logicalParentAp, child, callback, dataChildren, oldChildren);
}
}
}
return done;
}
//
private static bool iterate(Visual parent, IteratorCallback callback)
{
bool done = false;
AutomationPeer peer = null;
int count = parent.InternalVisualChildrenCount;
for (int i = 0; i < count && !done; i++)
{
Visual child = parent.InternalGetVisualChild(i);
if (child != null
&& child.CheckFlagsAnd(VisualFlags.IsUIElement)
&& (peer = CreatePeerForElement((UIElement)child)) != null)
{
done = callback(peer);
}
else
{
done = iterate(child, callback);
}
}
return (done);
}
