import 'dart:convert'; import 'dart:math'; import 'package:flutter/material.dart'; import 'package:flutter_hbb/models/peer_model.dart'; import 'package:flutter_hbb/models/platform_model.dart'; import 'package:get/get.dart'; import '../common.dart'; import 'model.dart'; enum PeerTabIndex { recent, fav, lan, ab, group, } class PeerTabModel with ChangeNotifier { WeakReference parent; int get currentTab => _currentTab; int _currentTab = 0; // index in tabNames List tabNames = [ 'Recent sessions', 'Favorites', if (!isWeb) 'Discovered', if (!(bind.isDisableAb() || bind.isDisableAccount())) 'Address book', if (!bind.isDisableAccount()) 'Group', ]; final List icons = [ Icons.access_time_filled, Icons.star, if (!isWeb) Icons.explore, if (!(bind.isDisableAb() || bind.isDisableAccount())) IconFont.addressBook, if (!bind.isDisableAccount()) Icons.group, ]; final List _isVisible = List.filled(5, true, growable: false); List get isVisible => _isVisible; List get indexs => List.generate(tabNames.length, (index) => index); List get visibleIndexs => indexs.where((e) => _isVisible[e]).toList(); List _selectedPeers = List.empty(growable: true); List get selectedPeers => _selectedPeers; bool _multiSelectionMode = false; bool get multiSelectionMode => _multiSelectionMode; List _currentTabCachedPeers = List.empty(growable: true); List get currentTabCachedPeers => _currentTabCachedPeers; bool _isShiftDown = false; bool get isShiftDown => _isShiftDown; String _lastId = ''; String get lastId => _lastId; PeerTabModel(this.parent) { // visible try { final option = bind.getLocalFlutterOption(k: 'peer-tab-visible'); if (option.isNotEmpty) { List decodeList = jsonDecode(option); if (decodeList.length == _isVisible.length) { for (int i = 0; i < _isVisible.length; i++) { if (decodeList[i] is bool) { _isVisible[i] = decodeList[i]; } } } } } catch (e) { debugPrint("failed to get peer tab visible list:$e"); } // init currentTab _currentTab = int.tryParse(bind.getLocalFlutterOption(k: 'peer-tab-index')) ?? 0; if (_currentTab < 0 || _currentTab >= tabNames.length) { _currentTab = 0; } _trySetCurrentTabToFirstVisible(); } setCurrentTab(int index) { if (_currentTab != index) { _currentTab = index; notifyListeners(); } } String tabTooltip(int index) { if (index >= 0 && index < tabNames.length) { return translate(tabNames[index]); } assert(false); return index.toString(); } IconData tabIcon(int index) { if (index >= 0 && index < tabNames.length) { return icons[index]; } assert(false); return Icons.help; } setMultiSelectionMode(bool mode) { _multiSelectionMode = mode; if (!mode) { _selectedPeers.clear(); _lastId = ''; } notifyListeners(); } select(Peer peer) { if (!_multiSelectionMode) { // https://github.com/flutter/flutter/issues/101275#issuecomment-1604541700 // After onTap, the shift key should be pressed for a while when not in multiselection mode, // because onTap is delayed when onDoubleTap is not null if (isDesktop && !_isShiftDown) return; _multiSelectionMode = true; } final cached = _currentTabCachedPeers.map((e) => e.id).toList(); int thisIndex = cached.indexOf(peer.id); int lastIndex = cached.indexOf(_lastId); if (_isShiftDown && thisIndex >= 0 && lastIndex >= 0) { int start = min(thisIndex, lastIndex); int end = max(thisIndex, lastIndex); bool remove = isPeerSelected(peer.id); for (var i = start; i <= end; i++) { if (remove) { if (isPeerSelected(cached[i])) { _selectedPeers.removeWhere((p) => p.id == cached[i]); } } else { if (!isPeerSelected(cached[i])) { _selectedPeers.add(_currentTabCachedPeers[i]); } } } } else { if (isPeerSelected(peer.id)) { _selectedPeers.removeWhere((p) => p.id == peer.id); } else { _selectedPeers.add(peer); } } _lastId = peer.id; notifyListeners(); } setCurrentTabCachedPeers(List peers) { Future.delayed(Duration.zero, () { _currentTabCachedPeers = peers; notifyListeners(); }); } selectAll() { _selectedPeers = _currentTabCachedPeers.toList(); notifyListeners(); } bool isPeerSelected(String id) { return selectedPeers.firstWhereOrNull((p) => p.id == id) != null; } setShiftDown(bool v) { if (_isShiftDown != v) { _isShiftDown = v; if (_multiSelectionMode) { notifyListeners(); } } } setTabVisible(int index, bool visible) { if (index >= 0 && index < _isVisible.length) { if (_isVisible[index] != visible) { _isVisible[index] = visible; if (index == _currentTab && !visible) { _trySetCurrentTabToFirstVisible(); } else if (visible && visibleIndexs.length == 1) { _currentTab = index; } try { bind.setLocalFlutterOption( k: 'peer-tab-visible', v: jsonEncode(_isVisible)); } catch (_) {} notifyListeners(); } } } _trySetCurrentTabToFirstVisible() { if (!_isVisible[_currentTab]) { int firstVisible = _isVisible.indexWhere((e) => e); if (firstVisible >= 0) { _currentTab = firstVisible; } } } }