/// <summary>
/// Callback to determine if an item in the tree is filtered in (return true) or out</summary>
/// <param name="item">Item tested for filtering</param>
/// <returns>True if filtered in, false if filtered out</returns>
public bool DefaultFilter(object item)
{
IItemView itemView = TreeView.As <IItemView>();
if (itemView != null)
{
ItemInfo info = new WinFormsItemInfo();
itemView.GetInfo(item, info);
return(SearchInputUI.IsNullOrEmpty() || SearchInputUI.Matches(info.Label));
}
return(true); // Don't filter anything if the context doesn't implement IItemView
}
private void TreeControl_NodeExpandedChanging(object sender, TreeControl.CancelNodeEventArgs e)
{
var treeView = TreeView.As <FilteredTreeView>();
// early exit
if (m_updating || !m_searching || e.Node.Tag == null ||
treeView == null)
{
return;
}
// is the node or any of its decendants passed filter
if (treeView.IsMatched(e.Node.Tag))
{
if (e.Node.Expanded)
{
if (!treeView.IsFullyExpaned(e.Node.Tag))
{
// add all the children that did not pass
// the filtering to the exempted set.
treeView.AddToExemptSet(e.Node.Tag);
// save e.Node and expand it in NodeExpandedChanged event handler.
m_toExpand = e.Node;
}
if (RestoreSubExpansion)
{
treeView.SaveExpansion(e.Node);
}
} // end of if (e.Node.Expanded )
else
{ // e.Node about to expand. Remove all its children from exempted set.
// so normal filtering will be applied.
treeView.RemoveFromExemptSet(e.Node.Tag);
}
}// end of if(treeView.IsMatched(e.Node.Tag))
else
{
if (e.Node.Expanded)
{
if (RestoreSubExpansion)
{
treeView.SaveExpansion(e.Node);
}
}
else
{
treeView.AddToExemptSet(e.Node.Tag);
}
}
}
/// <summary>
/// Callback to determine if an item in the tree is filtered in (return true) or out</summary>
/// <param name="item">Item tested for filtering</param>
/// <returns>True if filtered in, false if filtered out</returns>
public bool DefaultFilter(object item)
{
bool result = true;
IItemView itemView = TreeView.As <IItemView>();
if (!SearchInputUI.IsNullOrEmpty())
{
ItemInfo info = new WinFormsItemInfo();
itemView.GetInfo(item, info);
result = info.Label != null && SearchInputUI.Matches(info.Label);
}
return(result);
}
/// <summary>
/// Callback to determine if an item in the tree is filtered in (return true) or out</summary>
/// <param name="item">Item tested for filtering</param>
/// <returns>True if filtered in, false if filtered out</returns>
public bool DefaultFilter(object item)
{
bool result = true;
IItemView itemView = TreeView.As <IItemView>();
if (m_TagPanel.TagList.Count != 0)
{
ItemInfo info = new WinFormsItemInfo();
itemView.GetInfo(item, info);
result = info.Label != null && m_TagPanel.Matches(info.Label);
}
return(result);
}
/// <summary>
/// Gets header for the specified item; columns are optional.
/// </summary>
IEnumerable GetHeader(TreeView TreeView, TreeViewItem TreeViewItem)
{
var Source = new ObservableCollection <object>();
if (TreeView is TreeViewExt && TreeView.As <TreeViewExt>().Columns.Count > 0)
{
var t = TreeView as TreeViewExt;
t.Columns.For(0, t.Columns.Count, (a, b) => Source.Add(GetColumnContent(a[b], TreeViewItem)));
}
else
{
Source.Add(GetDefaultHeader(TreeViewItem));
}
return(Source);
}
/// <summary>
/// Delete selected objects</summary>
private bool Delete()
{
var instancingContext = TreeView.As <IInstancingContext>();
if (instancingContext.CanDelete())
{
var transactionContext = TreeView.As <ITransactionContext>();
transactionContext.DoTransaction(
delegate
{
instancingContext.Delete();
ISelectionContext selectionContext = TreeView.As <ISelectionContext>();
if (selectionContext != null)
{
selectionContext.Clear();
}
},
m_deleteBookmark.Text);
return(true);
}
return(false);
}
