refactor: implement IDisposable instead of calling custom Cleanup

Signed-off-by: leo <longshuang@msn.cn>

src/Models/Count.cs

@@ -0,0 +1,19 @@
+using System;
+
+namespace SourceGit.Models
+{
+    public class Count : IDisposable
+    {
+        public int Value { get; set; } = 0;
+
+        public Count(int value)
+        {
+            Value = value;
+        }
+
+        public void Dispose()
+        {
+            // Ignore
+        }
+    }
+}

src/ViewModels/CommitDetail.cs

@@ -15,7 +15,7 @@ using CommunityToolkit.Mvvm.ComponentModel;
 
 namespace SourceGit.ViewModels
 {
-    public partial class CommitDetail : ObservableObject
+    public partial class CommitDetail : ObservableObject, IDisposable
     {
         public int ActivePageIndex
         {
@@ -137,7 +137,7 @@ namespace SourceGit.ViewModels
             WebLinks = Models.CommitLink.Get(repo.Remotes);
         }
 
-        public void Cleanup()
+        public void Dispose()
         {
             _repo = null;
             _commit = null;

src/ViewModels/Histories.cs

@@ -12,7 +12,7 @@ using CommunityToolkit.Mvvm.ComponentModel;
 
 namespace SourceGit.ViewModels
 {
-    public class Histories : ObservableObject
+    public class Histories : ObservableObject, IDisposable
     {
         public Repository Repo
         {
@@ -57,7 +57,7 @@ namespace SourceGit.ViewModels
             private set => SetProperty(ref _navigationId, value);
         }
 
-        public object DetailContext
+        public IDisposable DetailContext
         {
             get => _detailContext;
             set => SetProperty(ref _detailContext, value);
@@ -98,23 +98,13 @@ namespace SourceGit.ViewModels
             _repo = repo;
         }
 
-        public void Cleanup()
+        public void Dispose()
         {
-            Commits = new List<Models.Commit>();
+            Commits = [];
-
             _repo = null;
             _graph = null;
             _autoSelectedCommit = null;
-
+            _detailContext?.Dispose();
-            if (_detailContext is CommitDetail cd)
-            {
-                cd.Cleanup();
-            }
-            else if (_detailContext is RevisionCompare rc)
-            {
-                rc.Cleanup();
-            }
-
             _detailContext = null;
         }
 
@@ -220,7 +210,7 @@ namespace SourceGit.ViewModels
             else
             {
                 _repo.SelectedSearchedCommit = null;
-                DetailContext = commits.Count;
+                DetailContext = new Models.Count(commits.Count);
             }
         }
 
@@ -1256,7 +1246,7 @@ namespace SourceGit.ViewModels
         private Models.CommitGraph _graph = null;
         private Models.Commit _autoSelectedCommit = null;
         private long _navigationId = 0;
-        private object _detailContext = null;
+        private IDisposable _detailContext = null;
 
         private Models.Bisect _bisect = null;
 

src/ViewModels/Repository.cs

@@ -546,9 +546,9 @@ namespace SourceGit.ViewModels
             _historiesFilterMode = Models.FilterMode.None;
 
             _watcher?.Dispose();
-            _histories.Cleanup();
+            _histories.Dispose();
-            _workingCopy.Cleanup();
+            _workingCopy.Dispose();
-            _stashesPage.Cleanup();
+            _stashesPage.Dispose();
 
             _watcher = null;
             _histories = null;

src/ViewModels/RevisionCompare.cs

@@ -10,7 +10,7 @@ using CommunityToolkit.Mvvm.ComponentModel;
 
 namespace SourceGit.ViewModels
 {
-    public class RevisionCompare : ObservableObject
+    public class RevisionCompare : ObservableObject, IDisposable
     {
         public object StartPoint
         {
@@ -83,7 +83,7 @@ namespace SourceGit.ViewModels
             Task.Run(Refresh);
         }
 
-        public void Cleanup()
+        public void Dispose()
         {
             _repo = null;
             _startPoint = null;

src/ViewModels/StashesPage.cs

@@ -11,7 +11,7 @@ using CommunityToolkit.Mvvm.ComponentModel;
 
 namespace SourceGit.ViewModels
 {
-    public class StashesPage : ObservableObject
+    public class StashesPage : ObservableObject, IDisposable
     {
         public List<Models.Stash> Stashes
         {
@@ -125,14 +125,13 @@ namespace SourceGit.ViewModels
             _repo = repo;
         }
 
-        public void Cleanup()
+        public void Dispose()
         {
+            _stashes?.Clear();
+            _changes?.Clear();
+
             _repo = null;
-            if (_stashes != null)
-                _stashes.Clear();
             _selectedStash = null;
-            if (_changes != null)
-                _changes.Clear();
             _selectedChange = null;
             _diffContext = null;
         }

src/ViewModels/WorkingCopy.cs

@@ -11,7 +11,7 @@ using CommunityToolkit.Mvvm.ComponentModel;
 
 namespace SourceGit.ViewModels
 {
-    public class WorkingCopy : ObservableObject
+    public class WorkingCopy : ObservableObject, IDisposable
     {
         public bool IncludeUntracked
         {
@@ -210,7 +210,7 @@ namespace SourceGit.ViewModels
             _repo = repo;
         }
 
-        public void Cleanup()
+        public void Dispose()
         {
             _repo = null;
             _inProgressContext = null;

src/Views/Histories.axaml

@@ -257,7 +257,7 @@
             <v:RevisionCompare/>
           </DataTemplate>
 
-          <DataTemplate DataType="x:Int32">
+          <DataTemplate DataType="m:Count">
             <StackPanel Orientation="Vertical" HorizontalAlignment="Center" VerticalAlignment="Center">
               <Path Width="128" Height="128"
                     Data="{StaticResource Icons.Detail}"
@@ -268,7 +268,7 @@
                          Margin="0,16"
                          FontSize="24" FontWeight="Bold"
                          Foreground="{DynamicResource Brush.FG2}"
-                         Text="{Binding Converter={x:Static c:StringConverters.FormatByResourceKey}, ConverterParameter='Histories.Selected'}"/>
+                         Text="{Binding Value, Converter={x:Static c:StringConverters.FormatByResourceKey}, ConverterParameter='Histories.Selected'}"/>
             </StackPanel>
           </DataTemplate>
         </ContentControl.DataTemplates>