feat: add a Wide Details history layout

src/Resources/Locales/en_US.axaml

@@ -830,6 +830,7 @@
   <x:String x:Key="Text.Repository.HistoriesLayout" xml:space="preserve">LAYOUT</x:String>
   <x:String x:Key="Text.Repository.HistoriesLayout.Horizontal" xml:space="preserve">Horizontal</x:String>
   <x:String x:Key="Text.Repository.HistoriesLayout.Vertical" xml:space="preserve">Vertical</x:String>
+  <x:String x:Key="Text.Repository.HistoriesLayout.WideDetails" xml:space="preserve">Wide Details</x:String>
   <x:String x:Key="Text.Repository.HistoriesOrder" xml:space="preserve">COMMITS ORDER</x:String>
   <x:String x:Key="Text.Repository.HistoriesOrder.ByDate" xml:space="preserve">Commit Date</x:String>
   <x:String x:Key="Text.Repository.HistoriesOrder.Topo" xml:space="preserve">Topologically</x:String>

src/ViewModels/Preferences.cs

@@ -214,7 +214,21 @@ public bool UseCompactBranchNamesInGraph
         public bool UseTwoColumnsLayoutInHistories
         {
             get => _useTwoColumnsLayoutInHistories;
-            set => SetProperty(ref _useTwoColumnsLayoutInHistories, value);
+            set
+            {
+                if (SetProperty(ref _useTwoColumnsLayoutInHistories, value) && value)
+                    UseWideDetailsLayoutInHistories = false;
+            }
+        }
+
+        public bool UseWideDetailsLayoutInHistories
+        {
+            get => _useWideDetailsLayoutInHistories;
+            set
+            {
+                if (SetProperty(ref _useWideDetailsLayoutInHistories, value) && value)
+                    UseTwoColumnsLayoutInHistories = false;
+            }
         }
 
         public bool DisplayTimeAsPeriodInHistories
@@ -813,6 +827,7 @@ private bool RemoveInvalidRepositoriesRecursive(List<RepositoryNode> collection)
 
         private bool _showTagsInGraph = true;
         private bool _useTwoColumnsLayoutInHistories = false;
+        private bool _useWideDetailsLayoutInHistories = false;
         private bool _displayTimeAsPeriodInHistories = false;
         private bool _useSideBySideDiff = false;
         private bool _ignoreWhitespaceChangesInDiff = false;

src/Views/Histories.axaml.cs

@@ -297,6 +297,8 @@ private void DecrNoSelectionChangeCount()
 
     public partial class Histories : UserControl
     {
+        internal Grid SidebarHost => HistoryArea;
+
         public static readonly DirectProperty<Histories, Models.Branch> CurrentBranchProperty =
             AvaloniaProperty.RegisterDirect<Histories, Models.Branch>(
                 nameof(CurrentBranch),
@@ -550,11 +552,22 @@ private void OnOpenAdvancedOptions(object sender, RoutedEventArgs e)
 
             var vertical = new MenuItem();
             vertical.Header = App.Text("Repository.HistoriesLayout.Vertical");
-            if (!isHorizontal)
+            if (!isHorizontal && !pref.UseWideDetailsLayoutInHistories)
                 vertical.Icon = this.CreateMenuIcon("Icons.Check");
             vertical.Click += (_, ev) =>
             {
                 pref.UseTwoColumnsLayoutInHistories = false;
+                pref.UseWideDetailsLayoutInHistories = false;
+                ev.Handled = true;
+            };
+
+            var wideDetails = new MenuItem();
+            wideDetails.Header = App.Text("Repository.HistoriesLayout.WideDetails");
+            if (pref.UseWideDetailsLayoutInHistories)
+                wideDetails.Icon = this.CreateMenuIcon("Icons.Check");
+            wideDetails.Click += (_, ev) =>
+            {
+                pref.UseWideDetailsLayoutInHistories = true;
                 ev.Handled = true;
             };
 
@@ -724,6 +737,7 @@ private void OnOpenAdvancedOptions(object sender, RoutedEventArgs e)
             menu.Items.Add(layout);
             menu.Items.Add(horizontal);
             menu.Items.Add(vertical);
+            menu.Items.Add(wideDetails);
             menu.Items.Add(new MenuItem() { Header = "-" });
             menu.Items.Add(showFlags);
             menu.Items.Add(reflog);

src/Views/Repository.axaml

@@ -10,6 +10,12 @@
              x:Class="SourceGit.Views.Repository"
              x:DataType="vm:Repository"
              x:Name="ThisControl">  
+  <v:Repository.IsWideDetailsLayoutActive>
+    <MultiBinding Converter="{x:Static BoolConverters.And}">
+      <Binding Source="{x:Static vm:Preferences.Instance}" Path="UseWideDetailsLayoutInHistories"/>
+      <Binding Path="IsDashboardVisible"/>
+    </MultiBinding>
+  </v:Repository.IsWideDetailsLayoutActive>
   <Grid>
     <Grid.ColumnDefinitions>
       <ColumnDefinition Width="49"/>
@@ -250,15 +256,17 @@
           </Grid>
 
           <!-- Main Body -->
-          <Grid Grid.Row="1" Background="{DynamicResource Brush.Window}">
+          <Grid x:Name="MainBody" Grid.Row="1" Background="{DynamicResource Brush.Window}">
             <Grid.ColumnDefinitions>
               <ColumnDefinition Width="{Binding #ThisControl.SidebarWidth, Mode=TwoWay}" MinWidth="{Binding #ThisControl.SidebarMinWidth, Mode=OneWay}"/>
               <ColumnDefinition Width="Auto"/>
               <ColumnDefinition Width="*" MinWidth="100"/>
             </Grid.ColumnDefinitions>
 
             <!-- Sidebar (Branches/Remotes/Tags/Submodules/Worktrees) -->
-            <Grid Grid.Column="0" RowDefinitions="Auto,*" IsVisible="{Binding #ThisControl.IsNormalSidebarVisible, Mode=OneWay}">              
+            <Grid x:Name="Sidebar" Grid.Column="0" RowDefinitions="Auto,*"
+                  DataContext="{Binding #ThisControl.DataContext}"
+                  IsVisible="{Binding #ThisControl.IsNormalSidebarVisible, Mode=OneWay}">
               <!-- Filter Branches/Tags/Submodules -->
               <TextBox Grid.Row="0"
                        x:Name="FilterBox"
@@ -575,13 +583,13 @@
             </Grid>
 
             <!-- Commit Search Panel -->
-            <v:CommitSearchView Grid.Column="0"
+            <v:CommitSearchView x:Name="CommitSearchPanel" Grid.Column="0"
                                 Margin="6,0,4,0"
-                                DataContext="{Binding Histories.SearchCommitContext, Mode=OneWay}"
+                                DataContext="{Binding #ThisControl.DataContext.Histories.SearchCommitContext, Mode=OneWay}"
                                 IsVisible="{Binding #ThisControl.IsCommitSearchPanelVisible, Mode=OneWay}"/>
 
             <!-- Splitter -->
-            <GridSplitter Grid.Column="1"
+            <GridSplitter x:Name="SidebarSplitter" Grid.Column="1"
                           Width="3" MinWidth="3" MaxWidth="3"
                           HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
                           Background="Transparent"
@@ -788,7 +796,7 @@
                   </Border>
 
                   <!-- History -->
-                  <v:Histories Grid.Row="2"
+                  <v:Histories x:Name="DashboardHistories" Grid.Row="2"
                                DataContext="{Binding Histories, Mode=OneWay}"
                                CurrentBranch="{Binding CurrentBranch, Mode=OneWay}"
                                Bisect="{Binding Bisect, Mode=OneWay}"

src/Views/Repository.axaml.cs

@@ -10,6 +10,22 @@ namespace SourceGit.Views
 {
     public partial class Repository : UserControl
     {
+        public static readonly DirectProperty<Repository, bool> IsWideDetailsLayoutActiveProperty =
+            AvaloniaProperty.RegisterDirect<Repository, bool>(
+                nameof(IsWideDetailsLayoutActive),
+                static o => o.IsWideDetailsLayoutActive,
+                static (o, v) => o.IsWideDetailsLayoutActive = v);
+
+        public bool IsWideDetailsLayoutActive
+        {
+            get => _isWideDetailsLayoutActive;
+            set
+            {
+                if (SetAndRaise(IsWideDetailsLayoutActiveProperty, ref _isWideDetailsLayoutActive, value))
+                    UpdateSidebarPlacement();
+            }
+        }
+
         public static readonly DirectProperty<Repository, bool> IsCommitSearchPanelVisibleProperty =
             AvaloniaProperty.RegisterDirect<Repository, bool>(
                 nameof(IsCommitSearchPanelVisible),
@@ -85,6 +101,33 @@ public Repository()
         protected override void OnLoaded(RoutedEventArgs e)
         {
             base.OnLoaded(e);
+            UpdateSidebarPlacement();
+            UpdateLeftSidebarLayout();
+        }
+
+        private void UpdateSidebarPlacement()
+        {
+            if (MainBody == null || DashboardHistories == null || _sidebarInHistory == _isWideDetailsLayoutActive)
+                return;
+
+            var historyArea = DashboardHistories.SidebarHost;
+            var source = _sidebarInHistory ? historyArea : MainBody;
+            var target = _isWideDetailsLayoutActive ? historyArea : MainBody;
+
+            // Move the existing sidebar and its bound width together so resizing and
+            // collapse/search state work identically in either location.
+            source.Children.Remove(Sidebar);
+            source.Children.Remove(CommitSearchPanel);
+            source.Children.Remove(SidebarSplitter);
+
+            var column = source.ColumnDefinitions[0];
+            source.ColumnDefinitions[0] = target.ColumnDefinitions[0];
+            target.ColumnDefinitions[0] = column;
+
+            target.Children.Add(Sidebar);
+            target.Children.Add(CommitSearchPanel);
+            target.Children.Add(SidebarSplitter);
+            _sidebarInHistory = _isWideDetailsLayoutActive;
             UpdateLeftSidebarLayout();
         }
 
@@ -531,6 +574,8 @@ private void CalculateSidebarWidth()
         }
 
         private bool _isNormalSidebarVisible = true;
+        private bool _isWideDetailsLayoutActive = false;
+        private bool _sidebarInHistory = false;
         private bool _isCommitSearchPanelVisible = false;
         private double _sidebarMinWidth = 200;
         private GridLength _sidebarWidth;

tests/LayoutChecks/LayoutChecks.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+  <ItemGroup>
+    <ProjectReference Include="../../src/SourceGit.csproj" />
+  </ItemGroup>
+</Project>