GitUI.FormDiff.ViewSelectedFileDiff C# (CSharp) Метод

        private void ViewSelectedFileDiff()
        {
            Cursor.Current = Cursors.WaitCursor;

            if (DiffFiles.SelectedItem == null)
                return;

            Patch selectedPatch;

            var revisions = RevisionGrid.GetRevisions();
            if (revisions.Count == 2)
            {
                selectedPatch =
                    GitCommands.GitCommands
                        .GetSingleDiff(
                            revisions[0].Guid,
                            revisions[1].Guid,
                            DiffFiles.SelectedItem.Name,
                            diffViewer.GetExtraDiffArguments());
            }
            else
            {
                var revision = revisions[0];
                selectedPatch =
                    GitCommands.GitCommands
                        .GetSingleDiff(
                            revision.Guid,
                            revision.ParentGuids[0],
                            DiffFiles.SelectedItem.Name,
                            diffViewer.GetExtraDiffArguments());
            }

            diffViewer.ViewPatch(selectedPatch != null ? selectedPatch.Text : "");
            Cursor.Current = Cursors.Default;
        }