///
override public object GetPattern(PatternInterface patternInterface)
{
if (patternInterface == PatternInterface.ExpandCollapse)
{
return(this);
}
else if (patternInterface == PatternInterface.SelectionItem)
{
return(this);
}
else if (patternInterface == PatternInterface.ScrollItem)
{
return(this);
}
else if ((patternInterface == PatternInterface.ItemContainer) || (patternInterface == PatternInterface.SynchronizedInput))
{
TreeViewItemAutomationPeer treeViewItemAutomationPeer = GetWrapperPeer() as TreeViewItemAutomationPeer;
if (treeViewItemAutomationPeer != null)
{
if (patternInterface == PatternInterface.SynchronizedInput)
{
return(treeViewItemAutomationPeer.GetPattern(patternInterface));
}
else
{
return(treeViewItemAutomationPeer);
}
}
}
return(base.GetPattern(patternInterface));
}
// Token: 0x0600287D RID: 10365 RVA: 0x000BC834 File Offset: 0x000BAA34
private void RecursiveScrollIntoView()
{
ItemsControlAutomationPeer itemsControlAutomationPeer = base.ItemsControlAutomationPeer;
if (this.ParentDataItemAutomationPeer != null && itemsControlAutomationPeer == null)
{
this.ParentDataItemAutomationPeer.RecursiveScrollIntoView();
itemsControlAutomationPeer = base.ItemsControlAutomationPeer;
}
if (itemsControlAutomationPeer != null)
{
TreeViewItemAutomationPeer treeViewItemAutomationPeer = itemsControlAutomationPeer as TreeViewItemAutomationPeer;
if (treeViewItemAutomationPeer != null && ((IExpandCollapseProvider)treeViewItemAutomationPeer).ExpandCollapseState == ExpandCollapseState.Collapsed)
{
((IExpandCollapseProvider)treeViewItemAutomationPeer).Expand();
}
ItemsControl itemsControl = itemsControlAutomationPeer.Owner as ItemsControl;
if (itemsControl != null)
{
if (itemsControl.ItemContainerGenerator.Status == GeneratorStatus.ContainersGenerated)
{
itemsControl.OnBringItemIntoView(base.Item);
return;
}
base.Dispatcher.BeginInvoke(DispatcherPriority.Loaded, new DispatcherOperationCallback(itemsControl.OnBringItemIntoView), base.Item);
}
}
}
// Token: 0x0600286C RID: 10348 RVA: 0x000BC648 File Offset: 0x000BA848
internal override AutomationPeer GetWrapperPeer()
{
AutomationPeer wrapperPeer = base.GetWrapperPeer();
TreeViewItemAutomationPeer treeViewItemAutomationPeer = wrapperPeer as TreeViewItemAutomationPeer;
if (treeViewItemAutomationPeer != null)
{
treeViewItemAutomationPeer.AddDataPeerInfo(this);
}
return(wrapperPeer);
}
/// <summary>Scrolls the content area of a container object in order to display the control within the visible region (viewport) of the container.</summary>
// Token: 0x0600287B RID: 10363 RVA: 0x000BC808 File Offset: 0x000BAA08
void IScrollItemProvider.ScrollIntoView()
{
TreeViewItemAutomationPeer treeViewItemAutomationPeer = this.GetWrapperPeer() as TreeViewItemAutomationPeer;
if (treeViewItemAutomationPeer != null)
{
IScrollItemProvider scrollItemProvider = treeViewItemAutomationPeer;
scrollItemProvider.ScrollIntoView();
return;
}
this.RecursiveScrollIntoView();
}
/// <summary>Removes the current element from the collection of selected items.</summary>
/// <exception cref="T:System.Windows.Automation.ElementNotAvailableException">UI Automation element is no longer available.</exception>
// Token: 0x06002878 RID: 10360 RVA: 0x000BC788 File Offset: 0x000BA988
void ISelectionItemProvider.RemoveFromSelection()
{
TreeViewItemAutomationPeer treeViewItemAutomationPeer = this.GetWrapperPeer() as TreeViewItemAutomationPeer;
if (treeViewItemAutomationPeer != null)
{
ISelectionItemProvider selectionItemProvider = treeViewItemAutomationPeer;
selectionItemProvider.RemoveFromSelection();
return;
}
base.ThrowElementNotAvailableException();
}
/// <summary>Hides all nodes, controls, or content that are descendants of the control.</summary>
// Token: 0x06002873 RID: 10355 RVA: 0x000BC6D8 File Offset: 0x000BA8D8
void IExpandCollapseProvider.Collapse()
{
TreeViewItemAutomationPeer treeViewItemAutomationPeer = this.GetWrapperPeer() as TreeViewItemAutomationPeer;
if (treeViewItemAutomationPeer != null)
{
IExpandCollapseProvider expandCollapseProvider = treeViewItemAutomationPeer;
expandCollapseProvider.Collapse();
return;
}
base.ThrowElementNotAvailableException();
}
void IScrollItemProvider.ScrollIntoView()
{
TreeViewItemAutomationPeer wrapperPeer = GetWrapperPeer() as TreeViewItemAutomationPeer;
if (wrapperPeer != null)
{
IScrollItemProvider iScrollItemProvider = wrapperPeer as IScrollItemProvider;
iScrollItemProvider.ScrollIntoView();
}
else
{
RecursiveScrollIntoView();
}
}
/// <summary>
/// Unselects this item.
/// </summary>
void ISelectionItemProvider.RemoveFromSelection()
{
TreeViewItemAutomationPeer wrapperPeer = GetWrapperPeer() as TreeViewItemAutomationPeer;
if (wrapperPeer != null)
{
ISelectionItemProvider iSelectionItemProvider = wrapperPeer as ISelectionItemProvider;
iSelectionItemProvider.RemoveFromSelection();
}
else
{
ThrowElementNotAvailableException();
}
}
///
void IExpandCollapseProvider.Collapse()
{
TreeViewItemAutomationPeer wrapperPeer = GetWrapperPeer() as TreeViewItemAutomationPeer;
if (wrapperPeer != null)
{
IExpandCollapseProvider iExpandCollapseProvider = wrapperPeer as IExpandCollapseProvider;
iExpandCollapseProvider.Collapse();
}
else
{
ThrowElementNotAvailableException();
}
}
/// <summary>Gets the collection of child elements of the <see cref="T:System.Windows.Controls.TreeViewItem" /> that is associated with this <see cref="T:System.Windows.Automation.Peers.TreeViewItemAutomationPeer" />. This method is called by <see cref="M:System.Windows.Automation.Peers.AutomationPeer.GetChildren" />.</summary>
/// <returns>The collection of child elements.</returns>
// Token: 0x06002884 RID: 10372 RVA: 0x000BC8F8 File Offset: 0x000BAAF8
protected override List <AutomationPeer> GetChildrenCore()
{
List <AutomationPeer> children = null;
ItemPeersStorage <ItemAutomationPeer> itemPeers = base.ItemPeers;
base.ItemPeers = new ItemPeersStorage <ItemAutomationPeer>();
TreeViewItem treeViewItem = base.Owner as TreeViewItem;
if (treeViewItem != null)
{
TreeViewItemAutomationPeer.iterate(this, treeViewItem, delegate(AutomationPeer peer)
{
if (children == null)
{
children = new List <AutomationPeer>();
}
children.Add(peer);
return(false);
}, base.ItemPeers, itemPeers);
}
return(children);
}
private void RecursiveScrollIntoView()
{
ItemsControlAutomationPeer itemsControlAutomationPeer = ItemsControlAutomationPeer;
// to check if the parent of this item is TreeViewItem.
if (ParentDataItemAutomationPeer != null)
{
// there might be a possibility that it's parent item is itself virtualized so we have to realize it and make a second attempt
if (itemsControlAutomationPeer == null)
{
ParentDataItemAutomationPeer.RecursiveScrollIntoView();
itemsControlAutomationPeer = ItemsControlAutomationPeer;
}
}
if (itemsControlAutomationPeer != null)
{
TreeViewItemAutomationPeer treeViewItemAutomationPeer = itemsControlAutomationPeer as TreeViewItemAutomationPeer;
if (treeViewItemAutomationPeer != null && (treeViewItemAutomationPeer as IExpandCollapseProvider).ExpandCollapseState == ExpandCollapseState.Collapsed)
{
(treeViewItemAutomationPeer as IExpandCollapseProvider).Expand();
}
ItemsControl parent = itemsControlAutomationPeer.Owner as ItemsControl;
if (parent != null)
{
if (parent.ItemContainerGenerator.Status == GeneratorStatus.ContainersGenerated)
{
parent.OnBringItemIntoView(Item);
}
else
{
// The items aren't generated, try at a later time
Dispatcher.BeginInvoke(DispatcherPriority.Loaded, new DispatcherOperationCallback(parent.OnBringItemIntoView), Item);
}
}
}
}
//
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(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;
}
// Token: 0x06002885 RID: 10373 RVA: 0x000BC954 File Offset: 0x000BAB54
private static bool iterate(TreeViewItemAutomationPeer logicalParentAp, DependencyObject parent, TreeViewItemAutomationPeer.IteratorCallback callback, ItemPeersStorage <ItemAutomationPeer> dataChildren, ItemPeersStorage <ItemAutomationPeer> oldChildren)
{
bool flag = false;
if (parent != null)
{
int childrenCount = VisualTreeHelper.GetChildrenCount(parent);
int num = 0;
while (num < childrenCount && !flag)
{
DependencyObject child = VisualTreeHelper.GetChild(parent, num);
if (child != null && child is UIElement)
{
AutomationPeer automationPeer;
if (child is TreeViewItem)
{
object item = (child is UIElement) ? (logicalParentAp.Owner as ItemsControl).GetItemOrContainerFromContainer(child as UIElement) : child;
automationPeer = oldChildren[item];
if (automationPeer == null)
{
automationPeer = logicalParentAp.GetPeerFromWeakRefStorage(item);
if (automationPeer != null)
{
automationPeer.AncestorsInvalid = false;
automationPeer.ChildrenValid = false;
}
}
if (automationPeer == null)
{
automationPeer = logicalParentAp.CreateItemAutomationPeer(item);
}
if (automationPeer != null)
{
AutomationPeer wrapperPeer = (automationPeer as ItemAutomationPeer).GetWrapperPeer();
if (wrapperPeer != null)
{
wrapperPeer.EventsSource = automationPeer;
}
if (dataChildren[item] == null && automationPeer is ItemAutomationPeer)
{
callback(automationPeer);
dataChildren[item] = (automationPeer as ItemAutomationPeer);
}
}
}
else
{
automationPeer = UIElementAutomationPeer.CreatePeerForElement((UIElement)child);
if (automationPeer != null)
{
flag = callback(automationPeer);
}
}
if (automationPeer == null)
{
flag = TreeViewItemAutomationPeer.iterate(logicalParentAp, child, callback, dataChildren, oldChildren);
}
}
else
{
flag = TreeViewItemAutomationPeer.iterate(logicalParentAp, child, callback, dataChildren, oldChildren);
}
num++;
}
}
return(flag);
}
