desktop file transfer shift + click multi selection

flutter/lib/desktop/pages/file_manager_page.dart

@@ -6,7 +6,6 @@ import 'package:desktop_drop/desktop_drop.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_breadcrumb/flutter_breadcrumb.dart';
-import 'package:flutter_hbb/mobile/pages/file_manager_page.dart';
 import 'package:flutter_hbb/models/file_model.dart';
 import 'package:get/get.dart';
 import 'package:provider/provider.dart';
@@ -273,21 +272,8 @@ class _FileManagerPageState extends State<FileManagerPage>
             return DataRow(
                 key: ValueKey(entry.name),
                 onSelectChanged: (s) {
-                  final isCtrlDown = RawKeyboard.instance.keysPressed
+                  _onSelectedChanged(getSelectedItem(isLocal), filteredEntries,
-                      .contains(LogicalKeyboardKey.controlLeft);
+                      entry, isLocal);
-                  final items = getSelectedItem(isLocal);
-                  if (isCtrlDown) {
-                    if (s != null) {
-                      if (s) {
-                        items.add(isLocal, entry);
-                      } else {
-                        items.remove(entry);
-                      }
-                    }
-                  } else {
-                    items.clear();
-                    items.add(isLocal, entry);
-                  }
                   setState(() {});
                 },
                 selected: getSelectedItem(isLocal).contains(entry),
@@ -321,20 +307,8 @@ class _FileManagerPageState extends State<FileManagerPage>
                         items.clear();
                         return;
                       }
-
+                      _onSelectedChanged(
-                      final isCtrlDown = RawKeyboard.instance.keysPressed
+                          items, filteredEntries, entry, isLocal);
-                          .contains(LogicalKeyboardKey.controlLeft);
-                      if (isCtrlDown) {
-                        if (items.contains(entry)) {
-                          items.remove(entry);
-                        } else {
-                          items.add(isLocal, entry);
-                        }
-                      } else {
-                        items.clear();
-                        items.add(isLocal, entry);
-                      }
-                      setState(() {});
                     },
                   ),
                   DataCell(FittedBox(
@@ -362,6 +336,38 @@ class _FileManagerPageState extends State<FileManagerPage>
     );
   }
 
+  void _onSelectedChanged(SelectedItems selectedItems, List<Entry> entries,
+      Entry entry, bool isLocal) {
+    final isCtrlDown = RawKeyboard.instance.keysPressed
+        .contains(LogicalKeyboardKey.controlLeft);
+    final isShiftDown =
+        RawKeyboard.instance.keysPressed.contains(LogicalKeyboardKey.shiftLeft);
+    if (isCtrlDown) {
+      if (selectedItems.contains(entry)) {
+        selectedItems.remove(entry);
+      } else {
+        selectedItems.add(isLocal, entry);
+      }
+    } else if (isShiftDown) {
+      final List<int> indexGroup = [];
+      for (var selected in selectedItems.items) {
+        indexGroup.add(entries.indexOf(selected));
+      }
+      indexGroup.add(entries.indexOf(entry));
+      indexGroup.removeWhere((e) => e == -1);
+      final maxIndex = indexGroup.reduce(max);
+      final minIndex = indexGroup.reduce(min);
+      selectedItems.clear();
+      entries
+          .getRange(minIndex, maxIndex + 1)
+          .forEach((e) => selectedItems.add(isLocal, e));
+    } else {
+      selectedItems.clear();
+      selectedItems.add(isLocal, entry);
+    }
+    setState(() {});
+  }
+
   bool _checkDoubleClick(Entry entry) {
     final current = DateTime.now().millisecondsSinceEpoch;
     final elapsed = current - _lastClickTime;

flutter/lib/mobile/pages/file_manager_page.dart

@@ -555,50 +555,3 @@ class BottomSheetBody extends StatelessWidget {
     );
   }
 }
-
-class SelectedItems {
-  bool? _isLocal;
-  final List<Entry> _items = [];
-
-  List<Entry> get items => _items;
-
-  int get length => _items.length;
-
-  bool? get isLocal => _isLocal;
-
-  add(bool isLocal, Entry e) {
-    if (_isLocal == null) {
-      _isLocal = isLocal;
-    }
-    if (_isLocal != null && _isLocal != isLocal) {
-      return;
-    }
-    if (!_items.contains(e)) {
-      _items.add(e);
-    }
-  }
-
-  bool contains(Entry e) {
-    return _items.contains(e);
-  }
-
-  remove(Entry e) {
-    _items.remove(e);
-    if (_items.length == 0) {
-      _isLocal = null;
-    }
-  }
-
-  bool isOtherPage(bool currentIsLocal) {
-    if (_isLocal == null) {
-      return false;
-    } else {
-      return _isLocal != currentIsLocal;
-    }
-  }
-
-  clear() {
-    _items.clear();
-    _isLocal = null;
-  }
-}

flutter/lib/models/file_model.dart

@@ -3,7 +3,6 @@ import 'dart:convert';
 
 import 'package:flutter/material.dart';
 import 'package:flutter_hbb/common.dart';
-import 'package:flutter_hbb/mobile/pages/file_manager_page.dart';
 import 'package:get/get.dart';
 import 'package:path/path.dart' as Path;
 
@@ -1123,6 +1122,51 @@ class DirectoryOption {
   }
 }
 
+class SelectedItems {
+  bool? _isLocal;
+  final List<Entry> _items = [];
+
+  List<Entry> get items => _items;
+
+  int get length => _items.length;
+
+  bool? get isLocal => _isLocal;
+
+  add(bool isLocal, Entry e) {
+    _isLocal ??= isLocal;
+    if (_isLocal != null && _isLocal != isLocal) {
+      return;
+    }
+    if (!_items.contains(e)) {
+      _items.add(e);
+    }
+  }
+
+  bool contains(Entry e) {
+    return _items.contains(e);
+  }
+
+  remove(Entry e) {
+    _items.remove(e);
+    if (_items.length == 0) {
+      _isLocal = null;
+    }
+  }
+
+  bool isOtherPage(bool currentIsLocal) {
+    if (_isLocal == null) {
+      return false;
+    } else {
+      return _isLocal != currentIsLocal;
+    }
+  }
+
+  clear() {
+    _items.clear();
+    _isLocal = null;
+  }
+}
+
 // code from file_manager pkg after edit
 List<Entry> _sortList(List<Entry> list, SortBy sortType, bool ascending) {
   if (sortType == SortBy.Name) {