OneTimeEventsBuilder class

A widget that fetches events from Nostr relays once and provides them to a builder function.

This widget is useful for one-time data fetching where you don't need continuous updates. It uses a FutureBuilder internally and calls FlutterNostr.instance.getEvents to fetch events based on the provided filters.

Unlike FlutterNostrFeed, this builder does not automatically update when new events arrive. It fetches once and displays the results.

Example usage:

OneTimeEventsBuilder(
  filters: [
    NostrFilter(kinds: [1], limit: 10),
  ],
  builder: (context, isLoading, error, subscriptionId, events) {
    if (isLoading) return CircularProgressIndicator();
    if (error != null) return Text('Error: $error');
    if (events == null || events.isEmpty) return Text('No events found');

    return ListView.builder(
      itemCount: events.length,
      itemBuilder: (context, index) {
        final event = events[index];
        return ListTile(title: Text(event.content ?? ''));
      },
    );
  },
)

See also:

• OneTimeEventBuilder for fetching a single event
• FlutterNostrFeed for reactive feeds that update automatically

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatelessWidget
• OneTimeEventsBuilder

Constructors

OneTimeEventsBuilder({Key? key, required List<NostrFilter> filters, required Widget builder(BuildContext context, bool isLoading, Object? error, String? subscriptionId, List<NostrEvent>? events)})

const

Properties

builder → Widget Function(BuildContext context, bool isLoading, Object? error, String? subscriptionId, List<NostrEvent>? events)

final

filters → List<NostrFilter>

final

hashCode → int

The hash code for this object.

no setter, inherited

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

build(BuildContext context) → Widget

Describes the part of the user interface represented by this widget.

override

createElement() → StatelessElement

Creates a StatelessElement to manage this widget's location in the tree.

inherited

debugDescribeChildren() → List<DiagnosticsNode>

Returns a list of DiagnosticsNode objects describing this node's children.

inherited

debugFillProperties(DiagnosticPropertiesBuilder properties) → void

Add additional properties associated with the node.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode

Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.

inherited

toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String

A string representation of this object.

inherited

toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String

Returns a string representation of this node and its descendants.

inherited

toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String

Returns a one-line detailed description of the object.

inherited

toStringShort() → String

A short, textual description of this widget.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited