refactor<*>: rewrite all with AvaloniaUI

src/ViewModels/StashChanges.cs

@@ -0,0 +1,55 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace SourceGit.ViewModels {
+    public class StashChanges : Popup {
+
+        public string Message {
+            get;
+            set;
+        }
+
+        public bool CanIgnoreUntracked {
+            get;
+            private set;
+        }
+
+        public bool IncludeUntracked {
+            get;
+            set;
+        }
+
+        public StashChanges(Repository repo, List<Models.Change> changes, bool canIgnoreUntracked) {
+            _repo = repo;
+            _changes = changes;
+            
+            CanIgnoreUntracked = canIgnoreUntracked;
+            IncludeUntracked = true;
+            View = new Views.StashChanges() { DataContext = this };
+        }
+
+        public override Task<bool> Sure() {
+            var jobs = _changes;
+            if (CanIgnoreUntracked && !IncludeUntracked) {
+                jobs = new List<Models.Change>();
+                foreach (var job in _changes) {
+                    if (job.WorkTree != Models.ChangeState.Untracked && job.WorkTree != Models.ChangeState.Added) {
+                        jobs.Add(job);
+                    }
+                }
+            }
+
+            if (jobs.Count == 0) return null;
+
+            _repo.SetWatcherEnabled(false);
+            return Task.Run(() => {
+                new Commands.Stash(_repo.FullPath).Push(jobs, Message);
+                CallUIThread(() => _repo.SetWatcherEnabled(true));
+                return true;
+            });
+        }
+
+        private Repository _repo = null;
+        private List<Models.Change> _changes = null;
+    }
+}