public GlyphFactoryInfo(int order, HexGlyphFactory factory, HexGlyphFactoryProvider glyphFactoryProvider)
{
Order = order;
Factory = factory ?? throw new ArgumentNullException(nameof(factory));
FactoryProvider = glyphFactoryProvider ?? throw new ArgumentNullException(nameof(glyphFactoryProvider));
Canvas = new Canvas {
Background = Brushes.Transparent
};
}
void InitializeGlyphFactories()
{
var oldFactories = new Dictionary <HexGlyphFactoryProvider, HexGlyphFactory>();
foreach (var info in glyphFactories.Values)
{
oldFactories[info.FactoryProvider] = info.Factory;
}
glyphFactories.Clear();
bool newFactory = false;
int order = 0;
foreach (var lazy in lazyGlyphFactoryProviders)
{
HexGlyphFactory glyphFactory = null;
foreach (var type in lazy.Metadata.TagTypes)
{
Debug.Assert(type != null);
if (type == null)
{
break;
}
Debug.Assert(!glyphFactories.ContainsKey(type));
if (glyphFactories.ContainsKey(type))
{
continue;
}
Debug.Assert(typeof(HexGlyphTag).IsAssignableFrom(type));
if (!typeof(HexGlyphTag).IsAssignableFrom(type))
{
continue;
}
if (glyphFactory == null)
{
if (oldFactories.TryGetValue(lazy.Value, out glyphFactory))
{
oldFactories.Remove(lazy.Value);
}
else
{
glyphFactory = lazy.Value.GetGlyphFactory(wpfHexViewHost.HexView, this);
if (glyphFactory == null)
{
break;
}
newFactory = true;
}
}
glyphFactories.Add(type, new GlyphFactoryInfo(order++, glyphFactory, lazy.Value));
}
}
foreach (var factory in oldFactories.Values)
{
(factory as IDisposable)?.Dispose();
}
if (newFactory || oldFactories.Count != 0)
{
childCanvases = glyphFactories.Values.OrderBy(a => a.Order).Select(a => a.Canvas).ToArray();
iconCanvas.Children.Clear();
foreach (var c in childCanvases)
{
iconCanvas.Children.Add(c);
}
RefreshEverything();
}
}
