Show only my locks (#515)

* Added a checkbox in the LFSLocks window to only show the ones locked by "Mat"
* Waits for the locks list to finish loading before making the checkbox clickable
* Now uses correct username for lock filtering.
   WIP: needs an error popup if user is misconfigured
* Added an error popup if username is empty on lfs locks
* Replaced an IEnumerable with a AvaloniaList for consistency

src/ViewModels/LFSLocks.cs

@@ -1,4 +1,5 @@
-using System.Threading.Tasks;
+using System.Linq;
+using System.Threading.Tasks;
 
 using Avalonia.Collections;
 using Avalonia.Threading;
@@ -21,10 +22,38 @@ namespace SourceGit.ViewModels
             private set => SetProperty(ref _isEmpty, value);
         }
         
-        public AvaloniaList<Models.LFSLock> Locks
+        public bool ShowOnlyMyLocks
+        {
+            get => _showOnlyMyLocks;
+            set
+            {
+                if (!SetProperty(ref _showOnlyMyLocks, value))
+                    return;
+
+                OnPropertyChanged(nameof(FilteredLocks));
+                IsEmpty = !FilteredLocks.Any();
+            }
+        }
+
+        private AvaloniaList<Models.LFSLock> Locks
         {
             get;
-            private set;
+        }
+
+        public AvaloniaList<Models.LFSLock> FilteredLocks
+        {
+            get
+            {
+                if (string.IsNullOrEmpty(_userName))
+                {
+                    App.RaiseException(_repo, "Username is empty");
+                    return Locks;
+                }
+
+                return _showOnlyMyLocks ?
+                    new AvaloniaList<Models.LFSLock>(Locks.Where(@lock => @lock.User == _userName)) :
+                    Locks;
+            }
         }
 
         public LFSLocks(string repo, string remote)
@@ -32,6 +61,7 @@ namespace SourceGit.ViewModels
             _repo = repo;
             _remote = remote;
             Locks = new AvaloniaList<Models.LFSLock>();
+            new Commands.Config(repo).ListAll().TryGetValue("user.name", out _userName);
 
             Task.Run(() =>
             {
@@ -71,5 +101,7 @@ namespace SourceGit.ViewModels
         private string _remote;
         private bool _isLoading = true;
         private bool _isEmpty = false;
+        private bool _showOnlyMyLocks = false;
+        private string _userName;
     }
 }

src/Views/LFSLocks.axaml

@@ -13,7 +13,7 @@
                     Title="{DynamicResource Text.GitLFS.Locks.Title}"
                     Width="600" Height="400"
                     WindowStartupLocation="CenterOwner">
-  <Grid RowDefinitions="Auto,*">
+  <Grid RowDefinitions="Auto,Auto,*">
     <!-- TitleBar -->
     <Grid Grid.Row="0" ColumnDefinitions="Auto,*,Auto" Height="30" IsVisible="{Binding !#ThisControl.UseSystemWindowFrame}">
       <Border Grid.Column="0" Grid.ColumnSpan="3"
@@ -43,11 +43,20 @@
                         IsVisible="{OnPlatform True, macOS=False}"/>
     </Grid>
 
+    <!-- Filter and Unlock All -->
+    <Grid Grid.Row="1" ColumnDefinitions="Auto,*,Auto" Margin="8,0,0,0">
+      <CheckBox Grid.Column="0"
+                Content="Show only my locks"
+                IsChecked="{Binding ShowOnlyMyLocks}"
+                IsEnabled="{Binding !IsLoading}"
+                VerticalAlignment="Center" />
+    </Grid>
+
     <!-- Locked Files -->
-    <Grid Grid.Row="1">
+    <Grid Grid.Row="2">
-      <ListBox Margin="8"
+      <ListBox Margin="8,0,8,8"
                Background="{DynamicResource Brush.Contents}"
-               ItemsSource="{Binding Locks}"
+               ItemsSource="{Binding FilteredLocks}"
                SelectionMode="Single"
                BorderThickness="1"
                BorderBrush="{DynamicResource Brush.Border2}"