void UpdateContent(Cell newCell)
{
Windows.UI.Xaml.DataTemplate dt = GetTemplate(newCell);
if (dt != _currentTemplate || Content == null)
{
_currentTemplate = dt;
Content = dt.LoadContent();
}
((FrameworkElement)Content).DataContext = newCell;
}
private Path CreateNewPath(Path oldPath, DataTemplate pathTemplate, int zIndex)
{
if (oldPath != null)
{
root.Children.Remove(oldPath);
}
if (pathTemplate != null)
{
var newPath = pathTemplate.LoadContent() as Path;
if (newPath != null)
{
root.Children.Add(newPath);
Canvas.SetZIndex(newPath, zIndex);
return newPath;
}
}
return null;
}
UIElement GetTemplatedCell(DataGrid grid, DataTemplate dt)
{
// check that the grid requesting the cell is the cache owner
if (_cacheOwner == null)
{
_cacheOwner = grid;
}
// get from cache if possible
List<UIElement> list = null;
// not the cache owner? don't use the cache...
if (grid == _cacheOwner)
{
if (_dtCache.TryGetValue(dt, out list) && list.Count > 0)
{
foreach (var item in list)
{
if (VisualTreeHelper.GetParent(item) == null)
{
return item;
}
}
}
}
// create now
var e = dt.LoadContent() as UIElement;
// save in recycle list
if (e != null)
{
// not the cache owner? don't use the cache...
if (grid == _cacheOwner)
{
if (list == null)
{
list = new List<UIElement>();
_dtCache[dt] = list;
}
list.Add(e);
_dtRawCache[e] = true;
}
}
// return
return e;
}
