Add CanInvoke method to IResourceAction.

Assets/Cryville/Crtr/Browsing/Actions/ActionManager.cs

@@ -45,17 +45,21 @@ namespace Cryville.Crtr.Browsing.Actions {
 			Unregister(typeof(T), action);
 		}
 
-		public IEnumerable<IResourceAction> GetActions(Type type) {
+		public IEnumerable<IResourceAction> GetActions(Uri uri, IResourceMeta res) {
+			return GetActions(uri, res, res.GetType());
+		}
+		IEnumerable<IResourceAction> GetActions(Uri uri, IResourceMeta res, Type type) {
 			if (type == null) return Enumerable.Empty<IResourceAction>();
 			List<IResourceAction> actions;
-			if (!_actions.TryGetValue(type, out actions)) {
+			IEnumerable<IResourceAction> result;
-				actions = new List<IResourceAction>();
+			if (_actions.TryGetValue(type, out actions))
-			}
+				result = actions.Where(i => i.CanInvoke(uri, res));
-			IEnumerable<IResourceAction> result = actions;
+			else
+				result = Enumerable.Empty<IResourceAction>();
 			if (type != typeof(object))
 				result = result
-					.Concat(GetActions(type.BaseType))
+					.Concat(GetActions(uri, res, type.BaseType))
-					.Concat(type.GetInterfaces().SelectMany(i => GetActions(i)));
+					.Concat(type.GetInterfaces().SelectMany(i => GetActions(uri, res, i)));
 			return result;
 		}
 	}

Assets/Cryville/Crtr/Browsing/Actions/IResourceAction.cs

@@ -4,9 +4,12 @@ namespace Cryville.Crtr.Browsing.Actions {
 	public interface IResourceAction {
 		string Name { get; }
 		int Priority { get; }
+
+		bool CanInvoke(Uri uri, IResourceMeta resource);
 		void Invoke(Uri uri, IResourceMeta resource);
 	}
 	public interface IResourceAction<T> : IResourceAction where T : IResourceMeta {
+		bool CanInvoke(Uri uri, T resource);
 		void Invoke(Uri uri, T resource);
 	}
 }

Assets/Cryville/Crtr/Browsing/Actions/ImportResourceAction.cs

@@ -11,6 +11,9 @@ namespace Cryville.Crtr.Browsing.Actions {
 		public string Name { get { return "Import"; } }
 		public int Priority { get { return 0; } }
 
+		public bool CanInvoke(Uri uri, IResourceMeta resource) {
+			throw new NotImplementedException();
+		}
 		public void Invoke(Uri uri, IResourceMeta resource) {
 			if (_destination.ImportFrom(uri))
 				Popup.Create("Import succeeded");

Assets/Cryville/Crtr/Browsing/Actions/OpenConfigAction.cs

@@ -12,6 +12,9 @@ namespace Cryville.Crtr.Browsing.Actions {
 
 		static readonly Dictionary<string, int> _rulesetTabs = new Dictionary<string, int>();
 
+		public override bool CanInvoke(Uri uri, IChartDetail resource) {
+			return true;
+		}
 		public override void Invoke(Uri uri, IChartDetail resource) {
 			var master = ResourceBrowserMaster.Instance;
 			var ruleset = resource.RulesetId;

Assets/Cryville/Crtr/Browsing/Actions/PlayChartAction.cs

@@ -8,6 +8,9 @@ namespace Cryville.Crtr.Browsing.Actions {
 		public override string Name { get { return "Play"; } }
 		public override int Priority { get { return -100; } }
 
+		public override bool CanInvoke(Uri uri, IChartDetail resource) {
+			return true;
+		}
 		public override void Invoke(Uri uri, IChartDetail resource) {
 			Settings.Default.LoadRuleset = Path.Combine(resource.RulesetId, ".umgr");
 			Settings.Default.LoadRulesetConfig = resource.RulesetId + ".json";

Assets/Cryville/Crtr/Browsing/Actions/ResourceAction.cs

@@ -4,6 +4,14 @@ namespace Cryville.Crtr.Browsing.Actions {
 	public abstract class ResourceAction<T> : IResourceAction<T> where T : IResourceMeta {
 		public abstract string Name { get; }
 		public abstract int Priority { get; }
+
+		public abstract bool CanInvoke(Uri uri, T resource);
+		public bool CanInvoke(Uri uri, IResourceMeta resource) {
+			if (resource == null) throw new ArgumentNullException("resource");
+			if (!(resource is T)) throw new ArgumentException("Mismatched resource type.");
+			return CanInvoke(uri, (T)resource);
+		}
+
 		public abstract void Invoke(Uri uri, T resource);
 		public void Invoke(Uri uri, IResourceMeta resource) {
 			if (resource == null) throw new ArgumentNullException("resource");

Assets/Cryville/Crtr/Browsing/UI/PathedResourceBrowser.cs

@@ -122,7 +122,7 @@ namespace Cryville.Crtr.Browsing.UI {
 					var res = _manager[id];
 					m_detailPanel.Load(res);
 					if (_selectedItems.Count == 1) {
-						LoadActions(res);
+						LoadActions(_manager.GetItemUri(id), res);
 					}
 				}
 				catch (Exception ex) {
@@ -133,11 +133,12 @@ namespace Cryville.Crtr.Browsing.UI {
 		internal override void OnActionsChanged() {
 			if (_destroyed) return;
 			if (_selectedItems.Count == 1) {
-				LoadActions(_manager[_selectedItems.Single()]);
+				int id = _selectedItems.Single();
+				LoadActions(_manager.GetItemUri(id), _manager[id]);
 			}
 		}
-		void LoadActions(IResourceMeta res) {
+		void LoadActions(Uri uri, IResourceMeta res) {
-			m_actionBar.Load(this, Master.Actions.GetActions(res.GetType()).Except(_importActionArray));
+			m_actionBar.Load(this, Master.Actions.GetActions(uri, res).Except(_importActionArray));
 		}
 
 		public void OnPathClicked(int index) {