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Use reference count in action manager.

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PopSlime
2024-02-16 18:25:57 +08:00
parent e9e6d7002a
commit b3fe4de0d4
1 changed files with 4 additions and 0 deletions
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4
Assets/Cryville/Crtr/Browsing/Actions/ActionManager.cs
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@@ -5,6 +5,7 @@ using System.Linq;
namespace Cryville.Crtr.Browsing.Actions {
public class ActionManager {
readonly Dictionary<Type, List<IResourceAction>> _actions = new Dictionary<Type, List<IResourceAction>>();
readonly Dictionary<IResourceAction, int> _refCounts = new Dictionary<IResourceAction, int>();
public event Action Changed;
@@ -23,6 +24,8 @@ namespace Cryville.Crtr.Browsing.Actions {
int index = actions.BinarySearch(action, ActionPriorityComparer.Instance);
if (index < 0) index = ~index;
actions.Insert(index, action);
if (_refCounts.ContainsKey(action)) _refCounts[action]++;
else _refCounts[action] = 0;
Changed?.Invoke();
}
public void Register(IResourceAction action) {
@@ -35,6 +38,7 @@ namespace Cryville.Crtr.Browsing.Actions {
public void Unregister(Type type, IResourceAction action) {
List<IResourceAction> actions;
if (!_actions.TryGetValue(type, out actions)) return;
if (--_refCounts[action] > 0) return;
actions.Remove(action);
Changed?.Invoke();
}