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add pullToRefresh property to ChannelListView

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This commit is contained in:
Salvatore Giordano
2020-08-25 11:07:29 +02:00
parent b8757e0e4c
commit 1e8fbd2854
1 changed files with 95 additions and 81 deletions
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lib/src/channel_list_view.dart
+95 -81
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@@ -60,6 +60,7 @@ class ChannelListView extends StatefulWidget {
this.channelPreviewBuilder,
this.errorBuilder,
this.onImageTap,
this.pullToRefresh = true,
}) : super(key: key);
/// The builder that will be used in case of error
@@ -105,6 +106,9 @@ class ChannelListView extends StatefulWidget {
/// The function called when the image is tapped
final Function(Channel) onImageTap;
/// Set it to false to disable the pull-to-refresh widget
final bool pullToRefresh;
@override
_ChannelListViewState createState() => _ChannelListViewState();
}
@@ -115,105 +119,115 @@ class _ChannelListViewState extends State<ChannelListView>
@override
Widget build(BuildContext context) {
final channelsProvider = ChannelsBloc.of(context);
final channelsBloc = ChannelsBloc.of(context);
if (!widget.pullToRefresh) {
return _buildListView(channelsBloc);
}
return RefreshIndicator(
onRefresh: () async {
return channelsProvider.queryChannels(
return channelsBloc.queryChannels(
filter: widget.filter,
sortOptions: widget.sort,
paginationParams: widget.pagination,
options: widget.options,
);
},
child: StreamBuilder<List<Channel>>(
stream: channelsProvider.channelsStream,
builder: (context, snapshot) {
if (snapshot.hasError) {
if (snapshot.error is Error) {
print((snapshot.error as Error).stackTrace);
}
child: _buildListView(channelsBloc),
);
}
if (widget.errorBuilder != null) {
return widget.errorBuilder(snapshot.error);
}
StreamBuilder<List<Channel>> _buildListView(
ChannelsBlocState channelsBlocState,
) {
return StreamBuilder<List<Channel>>(
stream: channelsBlocState.channelsStream,
builder: (context, snapshot) {
if (snapshot.hasError) {
if (snapshot.error is Error) {
print((snapshot.error as Error).stackTrace);
}
var message = snapshot.error.toString();
if (snapshot.error is DioError) {
final dioError = snapshot.error as DioError;
if (dioError.type == DioErrorType.RESPONSE) {
message = dioError.message;
} else {
message = 'Check your connection and retry';
}
if (widget.errorBuilder != null) {
return widget.errorBuilder(snapshot.error);
}
var message = snapshot.error.toString();
if (snapshot.error is DioError) {
final dioError = snapshot.error as DioError;
if (dioError.type == DioErrorType.RESPONSE) {
message = dioError.message;
} else {
message = 'Check your connection and retry';
}
return Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text.rich(
TextSpan(
children: [
WidgetSpan(
child: Padding(
padding: const EdgeInsets.only(
right: 2.0,
),
child: Icon(Icons.error_outline),
}
return Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text.rich(
TextSpan(
children: [
WidgetSpan(
child: Padding(
padding: const EdgeInsets.only(
right: 2.0,
),
child: Icon(Icons.error_outline),
),
TextSpan(text: 'Error loading channels'),
],
),
style: Theme.of(context).textTheme.headline6,
),
TextSpan(text: 'Error loading channels'),
],
),
Padding(
padding: const EdgeInsets.only(
top: 16.0,
),
child: Text(message),
style: Theme.of(context).textTheme.headline6,
),
Padding(
padding: const EdgeInsets.only(
top: 16.0,
),
FlatButton(
onPressed: () {
channelsProvider.queryChannels(
filter: widget.filter,
sortOptions: widget.sort,
paginationParams: widget.pagination,
options: widget.options,
);
},
child: Text('Retry'),
),
],
),
);
}
if (!snapshot.hasData) {
return Center(
child: CircularProgressIndicator(),
);
}
final channels = snapshot.data;
return ListView.custom(
physics: AlwaysScrollableScrollPhysics(),
controller: _scrollController,
childrenDelegate: SliverChildBuilderDelegate(
(context, i) {
return _itemBuilder(context, i, channels);
},
childCount: (channels.length * 2) + 1,
findChildIndexCallback: (key) {
final ValueKey<String> valueKey = key;
final index = channels.indexWhere(
(channel) => 'CHANNEL-${channel.id}' == valueKey.value);
return index != -1 ? (index * 2) : null;
},
child: Text(message),
),
FlatButton(
onPressed: () {
channelsBlocState.queryChannels(
filter: widget.filter,
sortOptions: widget.sort,
paginationParams: widget.pagination,
options: widget.options,
);
},
child: Text('Retry'),
),
],
),
);
}),
);
}
if (!snapshot.hasData) {
return Center(
child: CircularProgressIndicator(),
);
}
final channels = snapshot.data;
return ListView.custom(
physics: AlwaysScrollableScrollPhysics(),
controller: _scrollController,
childrenDelegate: SliverChildBuilderDelegate(
(context, i) {
return _itemBuilder(context, i, channels);
},
childCount: (channels.length * 2) + 1,
findChildIndexCallback: (key) {
final ValueKey<String> valueKey = key;
final index = channels.indexWhere(
(channel) => 'CHANNEL-${channel.id}' == valueKey.value);
return index != -1 ? (index * 2) : null;
},
),
);
});
}
Widget _itemBuilder(context, int i, List<Channel> channels) {