allow hide peer tab

Signed-off-by: 21pages <pages21@163.com>

flutter/lib/models/peer_tab_model.dart

@@ -1,3 +1,4 @@
+import 'dart:convert';
 import 'dart:math';
 
 import 'package:flutter/material.dart';
@@ -36,7 +37,10 @@ class PeerTabModel with ChangeNotifier {
     IconFont.addressBook,
     Icons.group,
   ];
+  final List<bool> _isVisible = List.filled(4, true, growable: false);
+  List<bool> get isVisible => _isVisible;
   List<int> get indexs => List.generate(tabNames.length, (index) => index);
+  List<int> get visibleIndexs => indexs.where((e) => _isVisible[e]).toList();
   List<Peer> _selectedPeers = List.empty(growable: true);
   List<Peer> get selectedPeers => _selectedPeers;
   bool _multiSelectionMode = false;
@@ -49,12 +53,29 @@ class PeerTabModel with ChangeNotifier {
   String get lastId => _lastId;
 
   PeerTabModel(this.parent) {
+    // visible
+    try {
+      final option = bind.getLocalFlutterOption(k: 'peer-tab-visible');
+      if (option.isNotEmpty) {
+        List<dynamic> 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) {
@@ -158,4 +179,31 @@ class PeerTabModel with ChangeNotifier {
       }
     }
   }
+
+  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;
+      }
+    }
+  }
 }