Line data Source code
1 : import 'package:cwtch/models/appstate.dart';
2 : import 'package:cwtch/models/contact.dart';
3 : import 'package:cwtch/models/message.dart';
4 : import 'package:cwtch/models/messagecache.dart';
5 : import 'package:cwtch/models/profile.dart';
6 : import 'package:cwtch/widgets/messageloadingbubble.dart';
7 : import 'package:flutter/material.dart';
8 : import 'package:provider/provider.dart';
9 : import 'package:scrollable_positioned_list/scrollable_positioned_list.dart';
10 : import 'package:cwtch/l10n/app_localizations.dart';
11 : import '../main.dart';
12 : import '../settings.dart';
13 :
14 : class MessageList extends StatefulWidget {
15 : ItemPositionsListener scrollListener;
16 0 : MessageList(this.scrollListener);
17 :
18 0 : @override
19 0 : _MessageListState createState() => _MessageListState();
20 : }
21 :
22 : class _MessageListState extends State<MessageList> {
23 0 : @override
24 : Widget build(BuildContext outerContext) {
25 : // On Android we can have unsynced messages at the front of the index from when the UI was asleep, if there are some, kick off sync of those first
26 0 : if (Provider.of<ContactInfoState>(context).messageCache.indexUnsynced != 0) {
27 0 : var conversationId = Provider.of<AppState>(outerContext, listen: false).selectedConversation!;
28 0 : MessageCache? cache = Provider.of<ProfileInfoState>(outerContext, listen: false).contactList.getContact(conversationId)?.messageCache;
29 0 : ByIndex(0).loadUnsynced(Provider.of<FlwtchState>(context, listen: false).cwtch, Provider.of<AppState>(outerContext, listen: false).selectedProfile!, conversationId, cache!);
30 : }
31 0 : if (Provider.of<ContactInfoState>(outerContext, listen: false).everFetched == false) {
32 0 : messageHandler(
33 : outerContext,
34 0 : Provider.of<ProfileInfoState>(outerContext, listen: false).onion,
35 0 : Provider.of<ContactInfoState>(outerContext, listen: false).identifier,
36 0 : ByIndex(Provider.of<ContactInfoState>(outerContext, listen: false).uiLoadedMessages),
37 : );
38 0 : Provider.of<ContactInfoState>(outerContext, listen: false).everFetched = true;
39 : }
40 0 : var initi = Provider.of<AppState>(outerContext, listen: false).initialScrollIndex;
41 0 : bool isP2P = !Provider.of<ContactInfoState>(context).isGroup;
42 0 : bool isGroupAndSyncing = Provider.of<ContactInfoState>(context).isGroup == true && Provider.of<ContactInfoState>(context).status == "Authenticated";
43 :
44 0 : bool preserveHistoryByDefault = Provider.of<Settings>(context, listen: false).preserveHistoryByDefault;
45 0 : bool showEphemeralWarning = (isP2P && (!preserveHistoryByDefault && Provider.of<ContactInfoState>(context).savePeerHistory != "SaveHistory"));
46 0 : bool showOfflineWarning = Provider.of<ContactInfoState>(context).isOnline() == false;
47 : bool showSyncing = isGroupAndSyncing;
48 : bool showMessageWarning = showEphemeralWarning || showOfflineWarning || showSyncing;
49 : // We used to only load historical messages when the conversation is with a p2p contact OR the conversation is a server and *not* syncing.
50 : // With the message cache in place this is no longer necessary
51 : bool loadMessages = true;
52 :
53 : // if it's been more than 2 minutes since we last clicked the button let users click the button again
54 : // OR if users have never clicked the button AND they appear offline, then they can click the button
55 : // NOTE: all these listeners are false...this is not ideal, but if they were true we would end up rebuilding the message view every tick (which would kill performance)
56 : // any significant changes in state e.g. peer offline or button clicks will trigger a rebuild anyway
57 : bool canReconnect =
58 0 : DateTime.now().difference(Provider.of<ContactInfoState>(context, listen: false).lastRetryTime).abs() > Duration(seconds: 30) ||
59 0 : (Provider.of<ProfileInfoState>(context, listen: false).appearOffline &&
60 0 : (Provider.of<ContactInfoState>(context, listen: false).lastRetryTime == Provider.of<ContactInfoState>(context, listen: false).loaded));
61 :
62 0 : var reconnectButton = Padding(
63 0 : padding: EdgeInsets.all(2),
64 : child: canReconnect
65 0 : ? Tooltip(
66 0 : message: AppLocalizations.of(context)!.retryConnectionTooltip,
67 0 : child: ElevatedButton(
68 0 : style: ButtonStyle(padding: MaterialStateProperty.all(EdgeInsets.all(20))),
69 0 : child: Text(AppLocalizations.of(context)!.retryConnection),
70 0 : onPressed: () {
71 0 : if (Provider.of<ContactInfoState>(context, listen: false).isGroup) {
72 0 : Provider.of<FlwtchState>(
73 0 : context,
74 : listen: false,
75 0 : ).cwtch.AttemptReconnectionServer(Provider.of<ProfileInfoState>(context, listen: false).onion, Provider.of<ContactInfoState>(context, listen: false).server!);
76 : } else {
77 0 : Provider.of<FlwtchState>(
78 0 : context,
79 : listen: false,
80 0 : ).cwtch.AttemptReconnection(Provider.of<ProfileInfoState>(context, listen: false).onion, Provider.of<ContactInfoState>(context, listen: false).onion);
81 : }
82 0 : Provider.of<ContactInfoState>(context, listen: false).lastRetryTime = DateTime.now();
83 0 : Provider.of<ContactInfoState>(context, listen: false).contactEvents.add(ContactEvent("Actively Retried Connection"));
84 0 : setState(() {
85 : // force update of this view...otherwise the button won't be removed fast enough...
86 : });
87 : },
88 : ),
89 : )
90 0 : : CircularProgressIndicator(color: Provider.of<Settings>(context).theme.hilightElementColor),
91 : );
92 :
93 0 : return RepaintBoundary(
94 0 : child: Container(
95 0 : color: Provider.of<Settings>(context).theme.backgroundMainColor,
96 0 : child: Column(
97 0 : children: [
98 0 : Visibility(
99 : visible: showMessageWarning,
100 0 : child: Container(
101 0 : padding: EdgeInsets.all(5.0),
102 0 : color: Provider.of<Settings>(context).theme.backgroundHilightElementColor,
103 0 : child: DefaultTextStyle(
104 0 : style: TextStyle(color: Provider.of<Settings>(context).theme.hilightElementColor),
105 : child: showSyncing
106 0 : ? Text(AppLocalizations.of(context)!.serverNotSynced, textAlign: TextAlign.center)
107 : : showOfflineWarning
108 0 : ? Column(
109 : crossAxisAlignment: CrossAxisAlignment.center,
110 0 : children: [
111 0 : Text(
112 0 : Provider.of<ContactInfoState>(context).isGroup ? AppLocalizations.of(context)!.serverConnectivityDisconnected : AppLocalizations.of(context)!.peerOfflineMessage,
113 : textAlign: TextAlign.center,
114 : ),
115 : reconnectButton,
116 : ],
117 : )
118 : // Only show the ephemeral status for peer conversations, not for groups...
119 : : (showEphemeralWarning
120 0 : ? Text(AppLocalizations.of(context)!.chatHistoryDefault, textAlign: TextAlign.center)
121 : :
122 : // We are not allowed to put null here, so put an empty text widget
123 0 : Text("")),
124 : ),
125 : ),
126 : ),
127 0 : Expanded(
128 0 : child: Container(
129 : // Only show broken heart is the contact is offline...
130 0 : decoration: BoxDecoration(
131 0 : image: Provider.of<ContactInfoState>(outerContext).isOnline()
132 0 : ? (Provider.of<Settings>(context).themeImages && Provider.of<Settings>(context).theme.chatImage != null)
133 0 : ? DecorationImage(
134 : repeat: ImageRepeat.repeat,
135 0 : image: Provider.of<Settings>(context).theme.loadImage(Provider.of<Settings>(context).theme.chatImage, context: context),
136 0 : colorFilter: ColorFilter.mode(Provider.of<Settings>(context).theme.chatImageColor, BlendMode.srcIn),
137 : )
138 : : null
139 0 : : DecorationImage(
140 : fit: BoxFit.scaleDown,
141 : alignment: Alignment.center,
142 0 : image: AssetImage("assets/core/negative_heart_512px.png"),
143 0 : colorFilter: ColorFilter.mode(Provider.of<Settings>(context).theme.hilightElementColor.withOpacity(0.15), BlendMode.srcIn),
144 : ),
145 : ),
146 : // Don't load messages for syncing server...
147 0 : child: Padding(
148 0 : padding: EdgeInsets.fromLTRB(0.0, 0.0, 0.0, 20.0),
149 : child: loadMessages
150 0 : ? ScrollablePositionedList.builder(
151 0 : itemPositionsListener: widget.scrollListener,
152 0 : itemScrollController: Provider.of<ContactInfoState>(outerContext).messageScrollController,
153 0 : initialScrollIndex: initi > 4 ? initi - 4 : 0,
154 0 : itemCount: Provider.of<ContactInfoState>(outerContext).uiLoadedMessages + 1,
155 : reverse: true, // NOTE: There seems to be a bug in flutter that corrects the mouse wheel scroll, but not the drag direction...
156 : shrinkWrap: true,
157 0 : itemBuilder: (itemBuilderContext, index) {
158 0 : var profileOnion = Provider.of<ProfileInfoState>(itemBuilderContext, listen: false).onion;
159 0 : var contactHandle = Provider.of<ContactInfoState>(itemBuilderContext, listen: false).identifier;
160 : var messageIndex = index;
161 0 : var loadedMessages = Provider.of<ContactInfoState>(itemBuilderContext, listen: false).uiLoadedMessages;
162 0 : var endOfMessages = Provider.of<ContactInfoState>(itemBuilderContext, listen: false).totalMessages + 1;
163 0 : if (index == endOfMessages - 1) {
164 0 : return ListTile(title: Text(AppLocalizations.of(itemBuilderContext)!.messageHistoryEndOfHistory, textAlign: TextAlign.center), dense: true);
165 0 : } else if (index >= loadedMessages) {
166 0 : return ElevatedButton(
167 0 : child: Text(AppLocalizations.of(itemBuilderContext)!.messageHistoryLoadOlderMessages),
168 0 : key: Key("loadAdditionalMessages"),
169 0 : onPressed: () {
170 0 : messageHandler(itemBuilderContext, profileOnion, contactHandle, ByIndex(messageIndex));
171 : },
172 : );
173 : }
174 0 : return FutureBuilder(
175 0 : future: messageHandler(itemBuilderContext, profileOnion, contactHandle, ByIndex(messageIndex)),
176 0 : builder: (fbcontext, snapshot) {
177 0 : if (snapshot.hasData) {
178 0 : var message = snapshot.data as Message;
179 : // here we create an index key for the contact and assign it to the row. Indexes are unique so we can
180 : // reliably use this without running into duplicate keys...it isn't ideal as it means keys need to be re-built
181 : // when new messages are added...however it is better than the alternative of not having widget keys at all.
182 0 : var key = Provider.of<ContactInfoState>(itemBuilderContext, listen: false).getMessageKey(contactHandle, messageIndex);
183 0 : return message.getWidget(fbcontext, key, messageIndex);
184 : } else {
185 0 : return MessageLoadingBubble();
186 : }
187 : },
188 : );
189 : },
190 : )
191 : : null,
192 : ),
193 : ),
194 : ),
195 : ],
196 : ),
197 : ),
198 : );
199 : }
200 : }
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