- tweak: file managment

Nebula.Shared/Models/ILoadingHandler.cs

@@ -0,0 +1,47 @@
+namespace Nebula.Shared.Models;
+
+public interface ILoadingHandler
+{
+    public void SetJobsCount(int count);
+    public int GetJobsCount();
+    
+    public void SetResolvedJobsCount(int count);
+    public int GetResolvedJobsCount();
+
+    public void AppendJob(int count = 1)
+    {
+        SetJobsCount(GetJobsCount() + count);
+    }
+
+    public void AppendResolvedJob(int count = 1)
+    {
+        SetResolvedJobsCount(GetResolvedJobsCount() + count);
+    }
+
+    public void Clear()
+    {
+        SetResolvedJobsCount(0);
+        SetJobsCount(0);
+    }
+
+    public QueryJob GetQueryJob()
+    {
+        return new QueryJob(this);
+    }
+}
+
+public sealed class QueryJob: IDisposable
+{
+    private readonly ILoadingHandler _handler;
+
+    public QueryJob(ILoadingHandler handler)
+    {
+        _handler = handler;
+        handler.AppendJob();
+    }
+    
+    public void Dispose()
+    {
+        _handler.AppendResolvedJob();
+    }
+}