124 lines
4.7 KiB
Dart
124 lines
4.7 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_gen/gen_l10n/l10n.dart';
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import 'package:matrix/matrix.dart';
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import 'package:scroll_to_index/scroll_to_index.dart';
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import 'package:fluffychat/config/themes.dart';
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import 'package:fluffychat/pages/chat/chat.dart';
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import 'package:fluffychat/pages/chat/events/message.dart';
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import 'package:fluffychat/pages/chat/seen_by_row.dart';
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import 'package:fluffychat/pages/chat/typing_indicators.dart';
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import 'package:fluffychat/pages/user_bottom_sheet/user_bottom_sheet.dart';
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import 'package:fluffychat/utils/adaptive_bottom_sheet.dart';
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import 'package:fluffychat/utils/matrix_sdk_extensions/filtered_timeline_extension.dart';
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import 'package:fluffychat/utils/platform_infos.dart';
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class ChatEventList extends StatelessWidget {
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final ChatController controller;
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const ChatEventList({
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Key? key,
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required this.controller,
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}) : super(key: key);
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@override
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Widget build(BuildContext context) {
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final horizontalPadding = FluffyThemes.isColumnMode(context) ? 8.0 : 0.0;
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// create a map of eventId --> index to greatly improve performance of
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// ListView's findChildIndexCallback
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final thisEventsKeyMap = <String, int>{};
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for (var i = 0; i < controller.timeline!.events.length; i++) {
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thisEventsKeyMap[controller.timeline!.events[i].eventId] = i;
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}
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return ListView.custom(
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padding: EdgeInsets.only(
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top: 16,
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bottom: 4,
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left: horizontalPadding,
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right: horizontalPadding,
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),
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reverse: true,
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controller: controller.scrollController,
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keyboardDismissBehavior: PlatformInfos.isIOS
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? ScrollViewKeyboardDismissBehavior.onDrag
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: ScrollViewKeyboardDismissBehavior.manual,
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childrenDelegate: SliverChildBuilderDelegate(
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(BuildContext context, int i) {
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// Footer to display typing indicator and read receipts:
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if (i == 0) {
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return Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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SeenByRow(controller),
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TypingIndicators(controller),
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],
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);
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}
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// Request history button or progress indicator:
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if (i == controller.timeline!.events.length + 1) {
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if (controller.timeline!.isRequestingHistory) {
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return const Center(
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child: CircularProgressIndicator.adaptive(strokeWidth: 2),
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);
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}
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if (controller.canLoadMore) {
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Center(
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child: OutlinedButton(
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style: OutlinedButton.styleFrom(
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backgroundColor: Theme.of(context).scaffoldBackgroundColor,
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),
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onPressed: controller.requestHistory,
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child: Text(L10n.of(context)!.loadMore),
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),
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);
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}
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return Container();
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}
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// The message at this index:
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final event = controller.timeline!.events[i - 1];
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return AutoScrollTag(
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key: ValueKey(event.eventId),
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index: i - 1,
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controller: controller.scrollController,
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child: event.isVisibleInGui
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? Message(
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event,
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onSwipe: (direction) =>
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controller.replyAction(replyTo: event),
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onInfoTab: controller.showEventInfo,
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onAvatarTab: (Event event) => showAdaptiveBottomSheet(
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context: context,
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builder: (c) => UserBottomSheet(
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user: event.senderFromMemoryOrFallback,
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outerContext: context,
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onMention: () => controller.sendController.text +=
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'${event.senderFromMemoryOrFallback.mention} ',
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),
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),
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onSelect: controller.onSelectMessage,
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scrollToEventId: (String eventId) =>
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controller.scrollToEventId(eventId),
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longPressSelect: controller.selectedEvents.isEmpty,
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selected: controller.selectedEvents
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.any((e) => e.eventId == event.eventId),
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timeline: controller.timeline!,
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nextEvent: i < controller.timeline!.events.length
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? controller.timeline!.events[i]
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: null,
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)
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: Container(),
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);
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},
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childCount: controller.timeline!.events.length + 2,
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findChildIndexCallback: (key) =>
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controller.findChildIndexCallback(key, thisEventsKeyMap),
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),
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);
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}
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}
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