E2EEChat/lib/view/contact_list.dart

import 'package:e2ee_chat/azlistview/azlistview.dart';
import 'package:e2ee_chat/common/api.dart';
import 'package:e2ee_chat/common/global.dart';
import 'package:e2ee_chat/model/contact_info.dart';
import 'package:e2ee_chat/model/message.dart';
import 'package:e2ee_chat/model/user.dart';
import 'package:e2ee_chat/presenter/contact_list.dart';
import 'package:e2ee_chat/presenter/chat_list.dart';
import 'package:e2ee_chat/presenter/login.dart';
import 'package:e2ee_chat/presenter/user_chat.dart';
import 'package:e2ee_chat/view/user_chat.dart';
import 'package:e2ee_chat/widgets/utils.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

class ContactListView extends StatefulWidget {
  @override
  _ContactListViewState createState() => _ContactListViewState();
}

class _ContactListViewState extends State<ContactListView> {
  final presenter = ContactListPresenter();
  @override
  void initState() {
    super.initState();
    presenter.freshContacts().then((_) => setState(() {}));
  }

  @override
  Widget build(BuildContext context) {
    return ChangeNotifierProvider<ContactListPresenter>(
      create: (context) => presenter,
      child: Builder(
        builder: (context) {
          final provider = Provider.of<ContactListPresenter>(context);
          final contacts = provider.contacts;
          return RefreshIndicator(
              child: AzListView(
                data: contacts,
                itemCount: contacts.length,
                itemBuilder: (context, index) {
                  ContactInfo info = contacts[index];
                  return Utils.getWeChatListItem(context, info, defHeaderBgColor: Color(0xFFE5E5E5),
                    onTap: () {
                    if (info.getSuspensionTag() == '↑') {
                      Navigator.of(context).pushNamed("friend request");
                    } else {
                      Navigator.of(context).pushNamed("user chat", arguments: info.name);
                    }
                  },
                  onLongPress:() async {
                    //TODO: 弹窗 接受 拒绝
                    await showDialog(
                      context: context,
                      barrierDismissible: false,//// user must tap button!
                      builder: (BuildContext context) {
                        return AlertDialog(
                          title: Text('Confirm'),
                          content: Text('Delete friend?'),
                          actions: <Widget>[
                            TextButton(
                              child: Text('No'),
                              onPressed: () {
                                Navigator.pop(context);
                              },
                            ),
                            TextButton(
                              child: Text('Yes'),
                              onPressed: () {
                                provider.deleteFriend(info.name);
                                Navigator.pop(context);
                              },
                            ),
                          ],
                        );
                      },
                    );
                  },
                  );
                },
                physics: BouncingScrollPhysics(),
                susItemBuilder: (BuildContext context, int index) {
                  ContactInfo model = contacts[index];
                  debug('sus item build contact info: name ${model.name} tag ${model.getSuspensionTag()}');
                  if ('↑' == model.getSuspensionTag()) {
                    return Container();
                  }
                  return Utils.getSusItem(context, model.getSuspensionTag());
                },
                indexBarData: ['↑', '☆', ...kIndexBarData],
                indexBarOptions: IndexBarOptions(
                  needRebuild: true,
                  ignoreDragCancel: true,
                  downTextStyle: TextStyle(fontSize: 12, color: Colors.white),
                  downItemDecoration: BoxDecoration(shape: BoxShape.circle, color: Colors.green),
                  indexHintWidth: 120 / 2,
                  indexHintHeight: 100 / 2,
                  indexHintDecoration: BoxDecoration(
                    image: DecorationImage(
                      image: AssetImage(Utils.getImgPath('ic_index_bar_bubble_gray')),
                      fit: BoxFit.contain,
                    ),
                  ),
                  indexHintAlignment: Alignment.centerRight,
                  indexHintChildAlignment: Alignment(-0.25, 0.0),
                  indexHintOffset: Offset(-20, 0),
                ),
              ),
              onRefresh: () async {});
        },
      ),
    );
  }
}