enhance: auto-select the first conflict file when no files are selected (sourcegit-scm#2053)

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

Author: love-linger

src/ViewModels/WorkingCopy.cs

@@ -264,8 +264,8 @@ public void SetData(List<Models.Change> changes, CancellationToken cancellationT
                         return;
 
                     HasUnsolvedConflicts = _cached.Find(x => x.IsConflicted) != null;
-                    UpdateDetail();
                     UpdateInProgressState();
+                    UpdateDetail();
                 });
 
                 return;
@@ -313,6 +313,12 @@ public void SetData(List<Models.Change> changes, CancellationToken cancellationT
                     selectedStaged.Add(c);
             }
 
+            if (selectedUnstaged.Count == 0 && selectedStaged.Count == 0 && hasConflict)
+            {
+                var firstConflict = visibleUnstaged.Find(x => x.IsConflicted);
+                selectedUnstaged.Add(firstConflict);
+            }
+
             Dispatcher.UIThread.Invoke(() =>
             {
                 if (cancellationToken.IsCancellationRequested)
@@ -329,8 +335,8 @@ public void SetData(List<Models.Change> changes, CancellationToken cancellationT
                 SelectedStaged = selectedStaged;
                 _isLoadingData = false;
 
-                UpdateDetail();
                 UpdateInProgressState();
+                UpdateDetail();
             });
         }
 

src/Views/WorkingCopy.axaml.cs

@@ -336,7 +336,7 @@ private ContextMenu CreateContextMenuForUnstagedChanges(ViewModels.WorkingCopy v
                     menu.Items.Add(useTheirs);
                     menu.Items.Add(useMine);
 
-                    if (change.ConflictReason is Models.ConflictReason.BothAdded or Models.ConflictReason.BothModified)
+                    if (change.ConflictReason is Models.ConflictReason.BothAdded or Models.ConflictReason.BothModified && !Directory.Exists(path))
                     {
                         var mergeBuiltin = new MenuItem();
                         mergeBuiltin.Header = App.Text("ChangeCM.Merge");