feat file transfer history (goBack)

flutter/lib/desktop/pages/file_manager_page.dart

@@ -202,7 +202,7 @@ class _FileManagerPageState extends State<FileManagerPage>
                         sortColumnIndex: sortIndex,
                         sortAscending: sortAscending,
                         columns: [
-                          DataColumn(label: Text(translate(" "))), // icon
+                          DataColumn(label: Text(" ")), // icon
                           DataColumn(
                               label: Text(
                                 translate("Name"),
@@ -402,10 +402,6 @@ class _FileManagerPageState extends State<FileManagerPage>
         ));
   }
 
-  goBack({bool? isLocal}) {
-    model.goToParentDirectory(isLocal: isLocal);
-  }
-
   Widget headTools(bool isLocal) {
     final locationStatus =
         isLocal ? _locationStatusLocal : _locationStatusRemote;
@@ -456,14 +452,20 @@ class _FileManagerPageState extends State<FileManagerPage>
                   icon: const Icon(Icons.home_outlined),
                   splashRadius: 20,
                 ),
+                IconButton(
+                  icon: const Icon(Icons.arrow_back),
+                  splashRadius: 20,
+                  onPressed: () {
+                    model.goBack(isLocal: isLocal);
+                  },
+                ),
                 IconButton(
                   icon: const Icon(Icons.arrow_upward),
                   splashRadius: 20,
                   onPressed: () {
-                    goBack(isLocal: isLocal);
+                    model.goToParentDirectory(isLocal: isLocal);
                   },
                 ),
-                menu(isLocal: isLocal),
               ],
             ),
             Expanded(
@@ -508,6 +510,7 @@ class _FileManagerPageState extends State<FileManagerPage>
                   )),
             )),
             PopupMenuButton(
+              tooltip: "",
               itemBuilder: (context) => [
                 PopupMenuItem(
                     enabled: false,
@@ -612,6 +615,7 @@ class _FileManagerPageState extends State<FileManagerPage>
                       },
                       splashRadius: 20,
                       icon: const Icon(Icons.delete_forever_outlined)),
+                  menu(isLocal: isLocal),
                 ],
               ),
             ),

flutter/lib/models/file_model.dart

@@ -16,12 +16,15 @@ class FileModel extends ChangeNotifier {
   var _isLocal = false;
   var _selectMode = false;
 
-  var _localOption = DirectoryOption();
+  final _localOption = DirectoryOption();
-  var _remoteOption = DirectoryOption();
+  final _remoteOption = DirectoryOption();
+
+  List<String> localHistory = [];
+  List<String> remoteHistory = [];
 
   var _jobId = 0;
 
-  var _jobProgress = JobProgress(); // from rust update
+  final _jobProgress = JobProgress(); // from rust update
 
   /// JobTable <jobId, JobProgress>
   final _jobTable = List<JobProgress>.empty(growable: true).obs;
@@ -368,8 +371,11 @@ class FileModel extends ChangeNotifier {
     }
   }
 
-  openDirectory(String path, {bool? isLocal}) async {
+  openDirectory(String path, {bool? isLocal, bool isBack = false}) async {
     isLocal = isLocal ?? _isLocal;
+    if (!isBack) {
+      pushHistory(isLocal);
+    }
     final showHidden =
         isLocal ? _localOption.showHidden : _remoteOption.showHidden;
     final isWindows =
@@ -397,11 +403,34 @@ class FileModel extends ChangeNotifier {
     }
   }
 
+  void pushHistory(bool isLocal) {
+    final history = isLocal ? localHistory : remoteHistory;
+    final currPath = isLocal ? currentLocalDir.path : currentRemoteDir.path;
+    if (history.isNotEmpty && history.last == currPath) {
+      return;
+    }
+    history.add(currPath);
+  }
+
   goHome({bool? isLocal}) {
     isLocal = isLocal ?? _isLocal;
     openDirectory(getCurrentHome(isLocal), isLocal: isLocal);
   }
 
+  goBack({bool? isLocal}) {
+    isLocal = isLocal ?? _isLocal;
+    final history = isLocal ? localHistory : remoteHistory;
+    if (history.isEmpty) return;
+    final path = history.removeAt(history.length - 1);
+    if (path.isEmpty) return;
+    final currPath = isLocal ? currentLocalDir.path : currentRemoteDir.path;
+    if (currPath == path) {
+      goBack(isLocal: isLocal);
+      return;
+    }
+    openDirectory(path, isLocal: isLocal, isBack: true);
+  }
+
   goToParentDirectory({bool? isLocal}) {
     isLocal = isLocal ?? _isLocal;
     final isWindows =
@@ -685,6 +714,8 @@ class FileModel extends ChangeNotifier {
   }
 
   sendRemoveEmptyDir(String path, int fileNum, bool isLocal) {
+    final history = isLocal ? localHistory : remoteHistory;
+    history.removeWhere((element) => element.contains(path));
     bind.sessionRemoveAllEmptyDirs(
         id: '${parent.target?.id}',
         actId: _jobId,