internal void CollapseInternal()
{
if (IsInATreeListView && ListView.InvokeRequired)
{
throw new Exception("Invoke Required");
}
TreeListViewItem treeListViewItem = null;
if (TreeListView != null)
{
treeListViewItem = TreeListView.FocusedItem;
}
if (Visible && _IsExpanded && ListView != null)
{
TreeListViewCancelEventArgs treeListViewCancelEventArgs = new TreeListViewCancelEventArgs(this, TreeListViewAction.Collapse);
ListView.RaiseBeforeCollapse(treeListViewCancelEventArgs);
if (treeListViewCancelEventArgs.Cancel)
{
return;
}
}
if (Visible)
{
foreach (TreeListViewItem item in Items)
{
item.Hide();
}
}
if (Visible && _IsExpanded && IsInATreeListView)
{
_IsExpanded = false;
TreeListViewEventArgs e = new TreeListViewEventArgs(this, TreeListViewAction.Collapse);
ListView.RaiseAfterCollapse(e);
if (this.AfterCollapse != null)
{
this.AfterCollapse(this);
}
}
_IsExpanded = false;
if (IsInATreeListView && treeListViewItem != null)
{
if (treeListViewItem.Visible)
{
treeListViewItem.Focused = true;
}
else
{
ListView treeListView = TreeListView;
treeListView.SelectedItems.Clear();
TreeListViewItem[] parentsInHierarch = treeListViewItem.ParentsInHierarch;
int num = parentsInHierarch.Length - 1;
while (true)
{
if (num < 0)
{
return;
}
if (parentsInHierarch[num].Visible)
{
break;
}
num--;
}
parentsInHierarch[num].Focused = true;
}
}
}
internal void ExpandInternal()
{
if (IsInATreeListView && ListView.InvokeRequired)
{
throw new Exception("Invoke Required");
}
TreeListViewItem treeListViewItem = null;
if (TreeListView != null)
{
treeListViewItem = TreeListView.FocusedItem;
}
CheckDirection checkDirection = CheckDirection.All;
if (ListView != null)
{
checkDirection = ListView.CheckDirection;
ListView.CheckDirection = CheckDirection.None;
}
if (Visible && !_IsExpanded && ListView != null)
{
TreeListViewCancelEventArgs treeListViewCancelEventArgs = new TreeListViewCancelEventArgs(this, TreeListViewAction.Expand);
ListView.RaiseBeforeExpand(treeListViewCancelEventArgs);
if (treeListViewCancelEventArgs.Cancel)
{
return;
}
}
if (Visible)
{
for (int num = Items.Count - 1; num >= 0; num--)
{
TreeListViewItem treeListViewItem2 = Items[num];
if (!treeListViewItem2.Visible)
{
ListView treeListView = TreeListView;
treeListView.Items.Insert(base.Index + 1, treeListViewItem2);
treeListViewItem2.SetIndentation();
}
if (treeListViewItem2.IsExpanded)
{
treeListViewItem2.Expand();
}
}
}
if (Visible && !_IsExpanded && IsInATreeListView)
{
_IsExpanded = true;
TreeListViewEventArgs e = new TreeListViewEventArgs(this, TreeListViewAction.Expand);
ListView.RaiseAfterExpand(e);
if (this.AfterExpand != null)
{
this.AfterExpand(this);
}
}
_IsExpanded = true;
if (IsInATreeListView)
{
ListView.CheckDirection = checkDirection;
}
if (TreeListView != null && treeListViewItem != null && treeListViewItem.Visible)
{
treeListViewItem.Focused = true;
}
}
