StreamChannelListController class

A controller for a Channel list.

This class lets you perform tasks such as:

  • Load initial data.
  • Use channel events handlers.
  • Load more data using loadMore.
  • Replace the previously loaded channels.
  • Return/Create a new channel and start watching it.
  • Pause and Resume all subscriptions added to this composite.
Inheritance

Constructors

StreamChannelListController({required StreamChatClient client, StreamChannelListEventHandler? eventHandler, Filter? filter, List<SortOption<ChannelState>>? channelStateSort, bool presence = true, int limit = defaultChannelPagedLimit, int? messageLimit, int? memberLimit})
Creates a Stream channel list controller.
StreamChannelListController.fromValue(PagedValue<int, Channel> value, {required StreamChatClient client, StreamChannelListEventHandler? eventHandler, Filter? filter, List<SortOption<ChannelState>>? channelStateSort, bool presence = true, int limit = defaultChannelPagedLimit, int? messageLimit, int? memberLimit})
Creates a StreamChannelListController from the passed value.

Properties

channels ← List<Channel>
Replaces the previously loaded channels with the passed channels.
no getter
channelStateSort → List<SortOption<ChannelState>>?
The sorting used for the channels matching the filters.
final
client → StreamChatClient
The client to use for the channels list.
final
currentItems → List<Channel>
Returns the currently loaded items
no setterinherited
eventListener ↔ (bool Function(Event event)?)
Event listener, which can be set in order to listen client web-socket events.
getter/setter pair
filter → Filter?
The query filters to use.
final
hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
limit → int
The limit to apply to the channel list. The default is set to defaultChannelPagedLimit.
final
memberLimit → int?
Number of members to fetch in each channel.
final
messageLimit → int?
Number of messages to fetch in each channel.
final
presence → bool
If true you’ll receive user presence updates via the websocket events
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
value ↔ PagedValue<int, Channel>
The current value stored in this notifier.
getter/setter pairinherited

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
appendLastPage(List<Channel> newItems) → void
Appends newItems to the previously loaded ones and sets the next page key to null.
inherited
appendPage({required List<Channel> newItems, required int nextPageKey}) → void
Appends newItems to the previously loaded ones and replaces the next page's key.
inherited
deleteChannel(Channel channel) → Future<void>
Deletes the channel and updates the list.
dispose() → void
Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).
override
doInitialLoad() → Future<void>
Load initial data from the server.
override
getChannel({required String id, required String type}) → Future<Channel>
Returns/Creates a new Channel and starts watching it.
leaveChannel(Channel channel) → Future<void>
Leaves the channel and updates the list.
loadMore(int nextPageKey) → Future<void>
Load more data from the server using nextPageKey.
override
muteChannel(Channel channel) → Future<void>
Mutes the channel and updates the list.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
pauseEventsSubscription([Future<void>? resumeSignal]) → void
Pauses all subscriptions added to this composite.
refresh({bool resetValue = true}) → Future<void>
Refresh the data presented by this PagedValueNotifier.
inherited
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
resumeEventsSubscription() → void
Resumes all subscriptions added to this composite.
retry() → Future<void>
Retry any failed load requests.
inherited
toString() → String
A string representation of this object.
inherited
unmuteChannel(Channel channel) → Future<void>
Un-mutes the channel and updates the list.

Operators

operator ==(Object other) → bool
The equality operator.
inherited