//TreeSearch
public void ForeachItems(ListItemLoopDelegate nodeItemDelegate)
{
ForeachItemsRecursion(this);
bool ForeachItemsRecursion(ITreeFolder folder)
{
bool breakFlag = false;
foreach (ITreeItem item in folder.ChildItemCollection)
{
nodeItemDelegate(item, ref breakFlag);
if (item is ITreeFolder)
{
if (!ForeachItemsRecursion(item as ITreeFolder))
{
return(false);
}
}
if (breakFlag)
{
return(false);
}
}
return(true);
}
}
public void ForeachItemsOptimize(ListItemLoopDelegate nodeItemDelegate)
{
float childContextHeight = (float)ChildItemScrollViewer.ActualHeight;
ForeachItemsRecursion(this);
bool ForeachItemsRecursion(ITreeFolder folder)
{
bool breakFlag = false;
foreach (ITreeItem item in folder.ChildItemCollection)
{
//화면 영역 밖에 벗어나면 스킵
FrameworkElement itemView = (FrameworkElement)item;
float itemTop = (float)item.TranslatePoint(new Point(), ChildItemScrollViewer).Y;
if ((itemTop < -itemView.ActualHeight || itemTop > childContextHeight))
{
continue;
}
nodeItemDelegate(item, ref breakFlag);
if (item is ITreeFolder)
{
if (!ForeachItemsRecursion(item as ITreeFolder))
{
return(false);
}
}
if (breakFlag)
{
return(false);
}
}
return(true);
}
}
