private void HandleBringIntoView(RequestBringIntoViewEventArgs e)
{
TreeViewItem parent = ParentTreeViewItem;
while (parent != null)
{
if (!parent.IsExpanded)
{
parent.SetCurrentValueInternal(IsExpandedProperty, BooleanBoxes.TrueBox);
}
parent = parent.ParentTreeViewItem;
}
// See FrameworkElement.BringIntoView() comments
//dmitryt, bug 1126518. On new/updated elements RenderSize isn't yet computed
//so we need to postpone the rect computation until layout is done.
//this is accomplished by passing Empty rect here and then asking for RenderSize
//in IScrollInfo when it actually executes an async MakeVisible command.
if (e.TargetRect.IsEmpty)
{
FrameworkElement header = HeaderElement;
if (header != null)
{
e.Handled = true;
header.BringIntoView();
}
else
{
// Header is not generated yet. Could happen if BringIntoView is called on container before layout. Try later.
Dispatcher.BeginInvoke(DispatcherPriority.Loaded, new DispatcherOperationCallback(BringItemIntoView), null);
}
}
}
private void HandleBringIntoView(RequestBringIntoViewEventArgs e)
{
TreeViewItem parent = ParentTreeViewItem;
while (parent != null)
{
if (!parent.IsExpanded)
{
parent.SetCurrentValueInternal(IsExpandedProperty, BooleanBoxes.TrueBox);
}
parent = parent.ParentTreeViewItem;
}
// See FrameworkElement.BringIntoView() comments
//dmitryt,
if (e.TargetRect.IsEmpty)
{
FrameworkElement header = HeaderElement;
if (header != null)
{
e.Handled = true;
header.BringIntoView();
}
else
{
// Header is not generated yet. Could happen if BringIntoView is called on container before layout. Try later.
Dispatcher.BeginInvoke(DispatcherPriority.Loaded, new DispatcherOperationCallback(BringItemIntoView), null);
}
}
}
/// <summary>
/// Recursively & syncronously expand all the nodes in this subtree.
/// </summary>
private static void ExpandRecursive(TreeViewItem item)
{
if (item == null)
{
return;
}
// Expand the current item
if (!item.IsExpanded)
{
item.SetCurrentValueInternal(IsExpandedProperty, BooleanBoxes.TrueBox);
}
// ApplyTemplate in order to generate the ItemsPresenter and the ItemsPanel. Note that in the
// virtualizing case even if the item is marked expanded we still need to do this step in order to
// regenerate the visuals because they may have been virtualized away.
item.ApplyTemplate();
ItemsPresenter itemsPresenter = (ItemsPresenter)item.Template.FindName(ItemsHostPartName, item);
if (itemsPresenter != null)
{
itemsPresenter.ApplyTemplate();
}
else
{
item.UpdateLayout();
}
VirtualizingPanel virtualizingPanel = item.ItemsHost as VirtualizingPanel;
item.ItemsHost.EnsureGenerator();
for (int i = 0, count = item.Items.Count; i < count; i++)
{
TreeViewItem subitem;
if (virtualizingPanel != null)
{
// We need to bring the item into view so that the container will be generated.
virtualizingPanel.BringIndexIntoView(i);
subitem = (TreeViewItem)item.ItemContainerGenerator.ContainerFromIndex(i);
}
else
{
subitem = (TreeViewItem)item.ItemContainerGenerator.ContainerFromIndex(i);
// We dont actually need to bring this into view, but we'll do it
// anyways to maintain the same behavior as with a virtualizing panel.
subitem.BringIntoView();
}
if (subitem != null)
{
ExpandRecursive(subitem);
}
}
}
// Token: 0x06005934 RID: 22836 RVA: 0x0018A638 File Offset: 0x00188838
private static void ExpandRecursive(TreeViewItem item)
{
if (item == null)
{
return;
}
if (!item.IsExpanded)
{
item.SetCurrentValueInternal(TreeViewItem.IsExpandedProperty, BooleanBoxes.TrueBox);
}
item.ApplyTemplate();
ItemsPresenter itemsPresenter = (ItemsPresenter)item.Template.FindName("ItemsHost", item);
if (itemsPresenter != null)
{
itemsPresenter.ApplyTemplate();
}
else
{
item.UpdateLayout();
}
VirtualizingPanel virtualizingPanel = item.ItemsHost as VirtualizingPanel;
item.ItemsHost.EnsureGenerator();
int i = 0;
int count = item.Items.Count;
while (i < count)
{
TreeViewItem treeViewItem;
if (virtualizingPanel != null)
{
virtualizingPanel.BringIndexIntoView(i);
treeViewItem = (TreeViewItem)item.ItemContainerGenerator.ContainerFromIndex(i);
}
else
{
treeViewItem = (TreeViewItem)item.ItemContainerGenerator.ContainerFromIndex(i);
treeViewItem.BringIntoView();
}
if (treeViewItem != null)
{
TreeViewItem.ExpandRecursive(treeViewItem);
}
i++;
}
}
// Token: 0x06005928 RID: 22824 RVA: 0x0018A374 File Offset: 0x00188574
private void HandleBringIntoView(RequestBringIntoViewEventArgs e)
{
for (TreeViewItem parentTreeViewItem = this.ParentTreeViewItem; parentTreeViewItem != null; parentTreeViewItem = parentTreeViewItem.ParentTreeViewItem)
{
if (!parentTreeViewItem.IsExpanded)
{
parentTreeViewItem.SetCurrentValueInternal(TreeViewItem.IsExpandedProperty, BooleanBoxes.TrueBox);
}
}
if (e.TargetRect.IsEmpty)
{
FrameworkElement headerElement = this.HeaderElement;
if (headerElement != null)
{
e.Handled = true;
headerElement.BringIntoView();
return;
}
base.Dispatcher.BeginInvoke(DispatcherPriority.Loaded, new DispatcherOperationCallback(this.BringItemIntoView), null);
}
}
/// <summary>
/// Recursively & syncronously expand all the nodes in this subtree.
/// </summary>
private static void ExpandRecursive(TreeViewItem item)
{
if (item == null)
{
return;
}
// Expand the current item
if (!item.IsExpanded)
{
item.SetCurrentValueInternal(IsExpandedProperty, BooleanBoxes.TrueBox);
}
// ApplyTemplate in order to generate the ItemsPresenter and the ItemsPanel. Note that in the
// virtualizing case even if the item is marked expanded we still need to do this step in order to
// regenerate the visuals because they may have been virtualized away.
item.ApplyTemplate();
ItemsPresenter itemsPresenter = (ItemsPresenter)item.Template.FindName("ItemsHost", item);
if (itemsPresenter != null)
{
itemsPresenter.ApplyTemplate();
}
else
{
item.UpdateLayout();
}
VirtualizingPanel virtualizingPanel = item.ItemsHost as VirtualizingPanel;
item.ItemsHost.EnsureGenerator();
for (int i = 0, count = item.Items.Count; i < count; i++)
{
TreeViewItem subitem;
if (virtualizingPanel != null)
{
// We need to bring the item into view so that the container will be generated.
virtualizingPanel.BringIndexIntoView(i);
subitem = (TreeViewItem)item.ItemContainerGenerator.ContainerFromIndex(i);
}
else
{
subitem = (TreeViewItem)item.ItemContainerGenerator.ContainerFromIndex(i);
// We dont actually need to bring this into view, but we'll do it
// anyways to maintain the same behavior as with a virtualizing panel.
subitem.BringIntoView();
}
if (subitem != null)
{
ExpandRecursive(subitem);
}
}
}
