rustdesk/flutter/lib/common/widgets/peers_view.dart
2023-03-14 22:10:04 +01:00

437 lines
12 KiB
Dart

import 'dart:async';
import 'dart:collection';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:provider/provider.dart';
import 'package:visibility_detector/visibility_detector.dart';
import 'package:window_manager/window_manager.dart';
import '../../common.dart';
import '../../models/peer_model.dart';
import '../../models/platform_model.dart';
import 'peer_card.dart';
typedef PeerFilter = bool Function(Peer peer);
typedef PeerCardBuilder = Widget Function(Peer peer);
class PeerSortType {
static const String remoteId = 'Remote ID';
static const String remoteHost = 'Remote Host';
static const String username = 'Username';
// static const String status = 'Status';
static List<String> values = [
PeerSortType.remoteId,
PeerSortType.remoteHost,
PeerSortType.username,
// PeerSortType.status
];
}
class LoadEvent {
static const String recent = 'load_recent_peers';
static const String favorite = 'load_fav_peers';
static const String lan = 'load_lan_peers';
static const String addressBook = 'load_address_book_peers';
}
/// for peer search text, global obs value
final peerSearchText = "".obs;
/// for peer sort, global obs value
final peerSort = bind.getLocalFlutterConfig(k: 'peer-sorting').obs;
// list for listener
final obslist = [peerSearchText, peerSort].obs;
final peerSearchTextController =
TextEditingController(text: peerSearchText.value);
class _PeersView extends StatefulWidget {
final Peers peers;
final PeerFilter? peerFilter;
final PeerCardBuilder peerCardBuilder;
const _PeersView(
{required this.peers,
required this.peerCardBuilder,
this.peerFilter,
Key? key})
: super(key: key);
@override
_PeersViewState createState() => _PeersViewState();
}
/// State for the peer widget.
class _PeersViewState extends State<_PeersView> with WindowListener {
static const int _maxQueryCount = 3;
final HashMap<String, String> _emptyMessages = HashMap.from({
LoadEvent.recent: 'empty_recent_tip',
LoadEvent.favorite: 'empty_favorite_tip',
LoadEvent.lan: 'empty_lan_tip',
LoadEvent.addressBook: 'empty_address_book_tip',
});
final space = isDesktop ? 12.0 : 8.0;
final _curPeers = <String>{};
var _lastChangeTime = DateTime.now();
var _lastQueryPeers = <String>{};
var _lastQueryTime = DateTime.now().subtract(const Duration(hours: 1));
var _queryCount = 0;
var _loaded = false;
var _exit = false;
late final mobileWidth = () {
const minWidth = 320.0;
final windowWidth = MediaQuery.of(context).size.width;
var width = windowWidth - 2 * space;
if (windowWidth > minWidth + 2 * space) {
final n = (windowWidth / (minWidth + 2 * space)).floor();
width = windowWidth / n - 2 * space;
}
return width;
}();
_PeersViewState() {
_startCheckOnlines();
}
@override
void initState() {
windowManager.addListener(this);
super.initState();
}
@override
void dispose() {
windowManager.removeListener(this);
_exit = true;
super.dispose();
}
@override
void onWindowFocus() {
_queryCount = 0;
}
@override
void onWindowMinimize() {
_queryCount = _maxQueryCount;
}
@override
Widget build(BuildContext context) {
return ChangeNotifierProvider<Peers>(
create: (context) => widget.peers,
child: Consumer<Peers>(
builder: (context, peers, child) => peers.peers.isEmpty && _loaded
? Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Icon(
Icons.sentiment_very_dissatisfied_rounded,
color: Theme.of(context).tabBarTheme.labelColor,
size: 40,
).paddingOnly(bottom: 10),
Text(
translate(
_emptyMessages[widget.peers.loadEvent] ?? 'Empty',
),
textAlign: TextAlign.center,
style: TextStyle(
color: Theme.of(context).tabBarTheme.labelColor,
),
),
],
),
)
: _buildPeersView(peers),
),
);
}
onVisibilityChanged(VisibilityInfo info) {
final peerId = _peerId((info.key as ValueKey).value);
if (info.visibleFraction > 0.00001) {
_curPeers.add(peerId);
} else {
_curPeers.remove(peerId);
}
_lastChangeTime = DateTime.now();
}
String _cardId(String id) => widget.peers.name + id;
String _peerId(String cardId) => cardId.replaceAll(widget.peers.name, '');
Widget _buildPeersView(Peers peers) {
_loaded = true;
final body = ObxValue<RxList>((filters) {
return FutureBuilder<List<Peer>>(
builder: (context, snapshot) {
if (snapshot.hasData) {
final peers = snapshot.data!;
final cards = <Widget>[];
for (final peer in peers) {
final visibilityChild = VisibilityDetector(
key: ValueKey(_cardId(peer.id)),
onVisibilityChanged: onVisibilityChanged,
child: widget.peerCardBuilder(peer),
);
cards.add(isDesktop
? Obx(
() => SizedBox(
width: 220,
height:
peerCardUiType.value == PeerUiType.grid ? 140 : 42,
child: visibilityChild,
),
)
: SizedBox(width: mobileWidth, child: visibilityChild));
}
return Wrap(spacing: space, runSpacing: space, children: cards);
} else {
return const Center(
child: CircularProgressIndicator(),
);
}
},
future: matchPeers(filters[0].value, filters[1].value, peers.peers),
);
}, obslist);
return body;
}
// ignore: todo
// TODO: variables walk through async tasks?
void _startCheckOnlines() {
final queryInterval = const Duration(seconds: 20);
() async {
while (!_exit) {
final now = DateTime.now();
if (!setEquals(_curPeers, _lastQueryPeers)) {
if (now.difference(_lastChangeTime) > const Duration(seconds: 1)) {
if (_curPeers.isNotEmpty) {
platformFFI.ffiBind
.queryOnlines(ids: _curPeers.toList(growable: false));
_lastQueryPeers = {..._curPeers};
_lastQueryTime = DateTime.now().subtract(queryInterval);
_queryCount = 0;
}
}
} else {
if (_queryCount < _maxQueryCount) {
if (now.difference(_lastQueryTime) >= queryInterval) {
if (_curPeers.isNotEmpty) {
platformFFI.ffiBind
.queryOnlines(ids: _curPeers.toList(growable: false));
_lastQueryTime = DateTime.now();
_queryCount += 1;
}
}
}
}
await Future.delayed(const Duration(milliseconds: 300));
}
}();
}
Future<List<Peer>>? matchPeers(
String searchText, String sortedBy, List<Peer> peers) async {
if (widget.peerFilter != null) {
peers = peers.where((peer) => widget.peerFilter!(peer)).toList();
}
// fallback to id sorting
if (!PeerSortType.values.contains(sortedBy)) {
sortedBy = PeerSortType.remoteId;
bind.setLocalFlutterConfig(
k: "peer-sorting",
v: sortedBy,
);
}
if (widget.peers.loadEvent != LoadEvent.recent) {
switch (sortedBy) {
case PeerSortType.remoteId:
peers.sort((p1, p2) => p1.getId().compareTo(p2.getId()));
break;
case PeerSortType.remoteHost:
peers.sort((p1, p2) =>
p1.hostname.toLowerCase().compareTo(p2.hostname.toLowerCase()));
break;
case PeerSortType.username:
peers.sort((p1, p2) =>
p1.username.toLowerCase().compareTo(p2.username.toLowerCase()));
break;
// case PeerSortType.status:
// peers.sort((p1, p2) => p1.online ? -1 : 1);
// break;
}
}
searchText = searchText.trim();
if (searchText.isEmpty) {
return peers;
}
searchText = searchText.toLowerCase();
final matches =
await Future.wait(peers.map((peer) => matchPeer(searchText, peer)));
final filteredList = List<Peer>.empty(growable: true);
for (var i = 0; i < peers.length; i++) {
if (matches[i]) {
filteredList.add(peers[i]);
}
}
return filteredList;
}
}
abstract class BasePeersView extends StatelessWidget {
final String name;
final String loadEvent;
final PeerFilter? peerFilter;
final PeerCardBuilder peerCardBuilder;
final List<Peer> initPeers;
const BasePeersView({
Key? key,
required this.name,
required this.loadEvent,
this.peerFilter,
required this.peerCardBuilder,
required this.initPeers,
}) : super(key: key);
@override
Widget build(BuildContext context) {
return _PeersView(
peers: Peers(name: name, loadEvent: loadEvent, peers: initPeers),
peerFilter: peerFilter,
peerCardBuilder: peerCardBuilder);
}
}
class RecentPeersView extends BasePeersView {
RecentPeersView(
{Key? key, EdgeInsets? menuPadding, ScrollController? scrollController})
: super(
key: key,
name: 'recent peer',
loadEvent: LoadEvent.recent,
peerCardBuilder: (Peer peer) => RecentPeerCard(
peer: peer,
menuPadding: menuPadding,
),
initPeers: [],
);
@override
Widget build(BuildContext context) {
final widget = super.build(context);
bind.mainLoadRecentPeers();
return widget;
}
}
class FavoritePeersView extends BasePeersView {
FavoritePeersView(
{Key? key, EdgeInsets? menuPadding, ScrollController? scrollController})
: super(
key: key,
name: 'favorite peer',
loadEvent: LoadEvent.favorite,
peerCardBuilder: (Peer peer) => FavoritePeerCard(
peer: peer,
menuPadding: menuPadding,
),
initPeers: [],
);
@override
Widget build(BuildContext context) {
final widget = super.build(context);
bind.mainLoadFavPeers();
return widget;
}
}
class DiscoveredPeersView extends BasePeersView {
DiscoveredPeersView(
{Key? key, EdgeInsets? menuPadding, ScrollController? scrollController})
: super(
key: key,
name: 'discovered peer',
loadEvent: LoadEvent.lan,
peerCardBuilder: (Peer peer) => DiscoveredPeerCard(
peer: peer,
menuPadding: menuPadding,
),
initPeers: [],
);
@override
Widget build(BuildContext context) {
final widget = super.build(context);
bind.mainLoadLanPeers();
return widget;
}
}
class AddressBookPeersView extends BasePeersView {
AddressBookPeersView(
{Key? key,
EdgeInsets? menuPadding,
ScrollController? scrollController,
required List<Peer> initPeers})
: super(
key: key,
name: 'address book peer',
loadEvent: LoadEvent.addressBook,
peerFilter: (Peer peer) =>
_hitTag(gFFI.abModel.selectedTags, peer.tags),
peerCardBuilder: (Peer peer) => AddressBookPeerCard(
peer: peer,
menuPadding: menuPadding,
),
initPeers: initPeers,
);
static bool _hitTag(List<dynamic> selectedTags, List<dynamic> idents) {
if (selectedTags.isEmpty) {
return true;
}
if (idents.isEmpty) {
return false;
}
for (final tag in selectedTags) {
if (!idents.contains(tag)) {
return false;
}
}
return true;
}
}
class MyGroupPeerView extends BasePeersView {
MyGroupPeerView(
{Key? key,
EdgeInsets? menuPadding,
ScrollController? scrollController,
required List<Peer> initPeers})
: super(
key: key,
name: 'my group peer',
loadEvent: 'load_my_group_peers',
peerCardBuilder: (Peer peer) => MyGroupPeerCard(
peer: peer,
menuPadding: menuPadding,
),
initPeers: initPeers,
);
}