Base project

src/Core/FileTime.Core.Services/ContentProviderBase.cs

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+using FileTime.Core.Enums;
+using FileTime.Core.Models;
+
+namespace FileTime.Core.Services
+{
+    public abstract class ContentProviderBase : IContentProvider
+    {
+        protected List<IAbsolutePath> Items { get; set; } = new List<IAbsolutePath>();
+
+        IReadOnlyList<IAbsolutePath> IContainer.Items => Items;
+
+        public string Name { get; }
+
+        public string DisplayName { get; }
+
+        public FullName? FullName => null;
+
+        public NativePath? NativePath => null;
+
+        public bool IsHidden => false;
+
+        public bool IsExists => true;
+
+        public SupportsDelete CanDelete => SupportsDelete.False;
+
+        public bool CanRename => false;
+
+        public IContentProvider Provider => this;
+
+        protected ContentProviderBase(string name)
+        {
+            DisplayName = Name = name;
+        }
+
+        public virtual Task OnEnter() => Task.CompletedTask;
+        public virtual async Task<IItem> GetItemByFullNameAsync(FullName fullName) => await GetItemByNativePathAsync(GetNativePath(fullName));
+        public abstract Task<IItem> GetItemByNativePathAsync(NativePath nativePath);
+        public abstract Task<List<IAbsolutePath>> GetItemsByContainerAsync(FullName fullName);
+        public abstract NativePath GetNativePath(FullName fullName);
+    }
+}

src/Core/FileTime.Core.Services/FileTime.Core.Services.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="System.Reactive" Version="5.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\FileTime.Core.Abstraction\FileTime.Core.Abstraction.csproj" />
+    <ProjectReference Include="..\FileTime.Core.Models\FileTime.Core.Models.csproj" />
+  </ItemGroup>
+
+</Project>

src/Core/FileTime.Core.Services/Tab.cs

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+namespace FileTime.Core.Services
+{
+    public class Tab : ITab
+    {
+        
+    }
+}