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add single_conversation example

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This commit is contained in:
Salvatore Giordano
2020-02-24 14:39:18 +01:00
parent dd323bcd8a
commit 9f22241f89
70 changed files with 1947 additions and 158 deletions
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lib/src/message_list_view.dart
+24 -25
View File
@@ -9,7 +9,7 @@ import 'stream_channel.dart';
typedef MessageBuilder = Widget Function(BuildContext, Message, int index);
typedef ParentMessageBuilder = Widget Function(BuildContext, Message);
typedef ParentTapCallback = void Function(Message parent);
typedef OnThreadSelectCallback = void Function(Message parent);
class MessageListView extends StatefulWidget {
MessageListView({
@@ -17,13 +17,13 @@ class MessageListView extends StatefulWidget {
MessageBuilder messageBuilder,
this.parentMessageBuilder,
this.parentMessage,
this.parentTapCallback,
this.onThreadSelect,
}) : _messageBuilder = messageBuilder,
super(key: key);
final MessageBuilder _messageBuilder;
final ParentMessageBuilder parentMessageBuilder;
final ParentTapCallback parentTapCallback;
final OnThreadSelectCallback onThreadSelect;
final Message parentMessage;
@override
@@ -59,7 +59,7 @@ class _MessageListViewState extends State<MessageListView> {
reverse: true,
childrenDelegate: SliverChildBuilderDelegate(
(context, i) {
if (i == this._messages.length + 1) {
if (i == _messages.length + 1) {
if (widget.parentMessage != null) {
if (widget.parentMessageBuilder != null) {
return widget.parentMessageBuilder(
@@ -74,7 +74,7 @@ class _MessageListViewState extends State<MessageListView> {
previousMessage: null,
message: widget.parentMessage.copyWith(replyCount: 0),
nextMessage: null,
parentTapCallback: widget.parentTapCallback,
onThreadSelect: widget.onThreadSelect,
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 32),
@@ -97,18 +97,18 @@ class _MessageListViewState extends State<MessageListView> {
}
}
if (i == this._messages.length) {
if (i == _messages.length) {
return _buildLoadingIndicator(streamChannel);
}
final message = this._messages[i];
final message = _messages[i];
if (widget._messageBuilder != null) {
return widget._messageBuilder(context, message, i);
}
final previousMessage =
i < this._messages.length - 1 ? this._messages[i + 1] : null;
final nextMessage = i > 0 ? this._messages[i - 1] : null;
i < _messages.length - 1 ? _messages[i + 1] : null;
final nextMessage = i > 0 ? _messages[i - 1] : null;
if (i == 0) {
return _buildBottomMessage(
@@ -119,7 +119,7 @@ class _MessageListViewState extends State<MessageListView> {
);
}
if (i == this._messages.length - 1) {
if (i == _messages.length - 1) {
return _buildTopMessage(
message,
nextMessage,
@@ -133,14 +133,13 @@ class _MessageListViewState extends State<MessageListView> {
previousMessage: previousMessage,
message: message,
nextMessage: nextMessage,
parentTapCallback: widget.parentTapCallback,
onThreadSelect: widget.onThreadSelect,
);
},
childCount: this._messages.length + 2,
childCount: _messages.length + 2,
findChildIndexCallback: (key) {
final ValueKey<String> valueKey = key;
final index = this
._messages
final index = _messages
.indexWhere((m) => 'MESSAGE-${m.id}' == valueKey.value);
return index != -1 ? index : null;
},
@@ -149,7 +148,7 @@ class _MessageListViewState extends State<MessageListView> {
);
}
Container _buildLoadingIndicator(StreamChannel streamChannel) {
Container _buildLoadingIndicator(StreamChannelState streamChannel) {
return Container(
height: 50,
child: StreamBuilder<bool>(
@@ -178,7 +177,7 @@ class _MessageListViewState extends State<MessageListView> {
Widget _buildTopMessage(
Message message,
Message nextMessage,
StreamChannel channelBloc,
StreamChannelState streamChannelState,
BuildContext context,
) {
return VisibilityDetector(
@@ -188,12 +187,12 @@ class _MessageListViewState extends State<MessageListView> {
previousMessage: null,
message: message,
nextMessage: nextMessage,
parentTapCallback: widget.parentTapCallback,
onThreadSelect: widget.onThreadSelect,
),
onVisibilityChanged: (visibility) {
final topIsVisible = visibility.visibleBounds != Rect.zero;
if (topIsVisible && !_topWasVisible) {
channelBloc.queryMessages();
streamChannelState.queryMessages();
}
_topWasVisible = topIsVisible;
},
@@ -201,7 +200,7 @@ class _MessageListViewState extends State<MessageListView> {
}
Widget _buildBottomMessage(
StreamChannel channelBloc,
StreamChannelState channelBloc,
Message previousMessage,
Message message,
BuildContext context,
@@ -209,8 +208,8 @@ class _MessageListViewState extends State<MessageListView> {
return VisibilityDetector(
key: ValueKey<String>('BOTTOM-MESSAGE'),
onVisibilityChanged: (visibility) {
this._isBottom = visibility.visibleBounds != Rect.zero;
if (this._isBottom) {
_isBottom = visibility.visibleBounds != Rect.zero;
if (_isBottom) {
if (channelBloc.channelClient.state.unreadCount > 0) {
channelBloc.channelClient.markRead();
}
@@ -221,7 +220,7 @@ class _MessageListViewState extends State<MessageListView> {
previousMessage: previousMessage,
message: message,
nextMessage: null,
parentTapCallback: widget.parentTapCallback,
onThreadSelect: widget.onThreadSelect,
),
);
}
@@ -254,14 +253,14 @@ class _MessageListViewState extends State<MessageListView> {
if (!_scrollController.hasClients ||
_scrollController.offset < _newMessageLoadingOffset) {
setState(() {
this._messages = newMessages;
_messages = newMessages;
});
} else if (newMessages.first.user.id ==
streamChannel.channelClient.client.user.id) {
_scrollController.jumpTo(0);
WidgetsBinding.instance.addPostFrameCallback((_) {
setState(() {
this._messages = newMessages;
_messages = newMessages;
});
});
} else {
@@ -269,7 +268,7 @@ class _MessageListViewState extends State<MessageListView> {
}
} else {
setState(() {
this._messages = newMessages;
_messages = newMessages;
});
}
});