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| 1 | - | public sealed partial class RenderTools |
| 1 | + | public sealed class RenderTools |
| 2 | {
| |
| 3 | private readonly IDictionary<Type, Func<object, Freezable>> _toolFactories = new Dictionary<Type, Func<object, Freezable>>(); | |
| 4 | ||
| 5 | private readonly IDictionary<object, Freezable> _toolCache = new Dictionary<object, Freezable>(); | |
| 6 | ||
| 7 | public void RegisterTool<TKey, TResult>(Func<TKey, TResult> toolFactory) | |
| 8 | where TResult : Freezable | |
| 9 | {
| |
| 10 | this._toolFactories[typeof(TKey)] = new Func<object, Freezable>( | |
| 11 | p => | |
| 12 | {
| |
| 13 | var tool = toolFactory((TKey)p); | |
| 14 | tool.Freeze(); | |
| 15 | return tool; | |
| 16 | }); | |
| 17 | } | |
| 18 | ||
| 19 | public TResult GetTool<TResult>(object toolKey) | |
| 20 | where TResult : Freezable | |
| 21 | {
| |
| 22 | Freezable result; | |
| 23 | ||
| 24 | if (!this._toolCache.TryGetValue(toolKey, out result)) | |
| 25 | {
| |
| 26 | result = this._toolFactories[toolKey.GetType()](toolKey); | |
| 27 | this._toolCache.Add(toolKey, result); | |
| 28 | } | |
| 29 | ||
| 30 | return (TResult)result; | |
| 31 | } | |
| 32 | } |
