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Add RefreshIndicator on friends screen

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This commit is contained in:
Pierre HUBERT 2019-05-04 09:37:53 +02:00
parent b06c28dc87
commit c8b68e71aa
1 changed files with 37 additions and 52 deletions
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89
lib/ui/screens/friends_list_screen.dart
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@ -33,28 +33,31 @@ class _FriendsListScreenState extends SafeState<FriendsListScreen> {
_ErrorsLevel _error = _ErrorsLevel.NONE;
FriendsList _friendsList;
UsersList _usersInfo;
bool _loading = true;
GlobalKey<RefreshIndicatorState> _refreshIndicatorKey =
GlobalKey<RefreshIndicatorState>();
/// Useful setters
set error(_ErrorsLevel err) => setState(() => _error = err);
set loading(bool loading) => setState(() => _loading = loading);
void _gotError() {
loading = false;
error = _friendsList == null ? _ErrorsLevel.MAJOR : _ErrorsLevel.MINOR;
}
@override
void didChangeDependencies() {
super.didChangeDependencies();
_loadList();
}
/// Refresh the list of friends
Future<void> _refreshList() async {
await _refreshIndicatorKey.currentState.show();
}
/// Load the list of friends
Future<void> _loadList() async {
error = _ErrorsLevel.NONE;
loading = true;
// Get the list of friends
final list = await _friendsHelper.downloadList();
@ -73,7 +76,6 @@ class _FriendsListScreenState extends SafeState<FriendsListScreen> {
_friendsList = list;
_usersInfo = users;
});
loading = false;
error = _ErrorsLevel.NONE;
}
@ -82,7 +84,7 @@ class _FriendsListScreenState extends SafeState<FriendsListScreen> {
tr("Could not load your list of friends!"),
actions: [
FlatButton(
onPressed: _loadList,
onPressed: _refreshList,
child: Text(
tr("Retry").toUpperCase(),
style: TextStyle(color: Colors.white),
@ -96,43 +98,33 @@ class _FriendsListScreenState extends SafeState<FriendsListScreen> {
if (_error == _ErrorsLevel.MAJOR) return _buildError();
if (_friendsList == null) return buildCenteredProgressBar();
return Stack(
return Column(
children: <Widget>[
Column(
children: <Widget>[
// Check for errors
Container(
child: _error != _ErrorsLevel.NONE ? _buildError() : null),
// Check for errors
Container(child: _error != _ErrorsLevel.NONE ? _buildError() : null),
// List of friends
Expanded(
child: ListView.builder(
itemCount: _friendsList.length,
itemBuilder: (c, i) => _friendsList[i].accepted
? AcceptedFriendTile(
friend: _friendsList[i],
user: _usersInfo.getUser(_friendsList[i].id),
onOpenPrivateConversation: _openPrivateConversation,
onSetFollowing: _setFollowingFriend,
onRequestDelete: _deleteFriend,
)
: PendingFriendTile(
friend: _friendsList[i],
user: _usersInfo.getUser(_friendsList[i].id),
onRespond: _respondRequest,
)),
),
],
),
// Check if loading
Positioned(
child: Container(
child:
_loading ? Center(child: CircularProgressIndicator()) : null),
top: 16.0,
left: 0.0,
right: 0.0,
// List of friends
Expanded(
child: RefreshIndicator(
key: _refreshIndicatorKey,
onRefresh: _loadList,
child: ListView.builder(
physics: AlwaysScrollableScrollPhysics(),
itemCount: _friendsList.length,
itemBuilder: (c, i) => _friendsList[i].accepted
? AcceptedFriendTile(
friend: _friendsList[i],
user: _usersInfo.getUser(_friendsList[i].id),
onOpenPrivateConversation: _openPrivateConversation,
onSetFollowing: _setFollowingFriend,
onRequestDelete: _deleteFriend,
)
: PendingFriendTile(
friend: _friendsList[i],
user: _usersInfo.getUser(_friendsList[i].id),
onRespond: _respondRequest,
)),
),
),
],
);
@ -140,23 +132,19 @@ class _FriendsListScreenState extends SafeState<FriendsListScreen> {
/// Respond to friendship request
Future<void> _respondRequest(Friend f, bool accept) async {
loading = true;
if (!await _friendsHelper.respondRequest(f.id, accept))
showSimpleSnack(context, tr("Could not respond to friendship request!"));
// Load the list of friends again
_loadList();
_refreshList();
}
/// Update following status of a friend
Future<void> _setFollowingFriend(Friend friend, bool follow) async {
loading = true;
if (!await _friendsHelper.setFollowing(friend.id, follow))
showSimpleSnack(context, tr("Could not update following status!"));
_loadList();
_refreshList();
}
/// Handles deletion request of a friend
@ -186,19 +174,16 @@ class _FriendsListScreenState extends SafeState<FriendsListScreen> {
if (choice == null || !choice) return;
// Forward the request to the server
loading = true;
if (!await _friendsHelper.removeFriend(f.id))
showSimpleSnack(
context, tr("Could not delete this person from your friends list!"));
// Refresh list
_loadList();
_refreshList();
}
/// Open a private conversation for a given [friend]
Future<void> _openPrivateConversation(Friend friend) async {
loading = true;
await openPrivateConversation(context, friend.id);
loading = false;
}
}