66932c5d0b
Freeze the message list on a stationary touch-and-hold (pointer-counted, touch-slop aware) so an incoming message can't shift the row out from under a long-press, while still allowing scroll to cancel the freeze. Co-authored-by: Francis Lavoie <lavofr@gmail.com> Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
379 lines
16 KiB
Dart
379 lines
16 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter/rendering.dart';
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import 'package:flutter_mobx/flutter_mobx.dart';
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import 'package:frosty/screens/channel/chat/emote_menu/emote_menu_panel.dart';
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import 'package:frosty/screens/channel/chat/emote_menu/recent_emotes_panel.dart';
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import 'package:frosty/screens/channel/chat/stores/chat_store.dart';
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import 'package:frosty/screens/channel/chat/stores/chat_tabs_store.dart';
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import 'package:frosty/screens/channel/chat/widgets/chat_bottom_bar.dart';
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import 'package:frosty/screens/channel/chat/widgets/chat_message.dart';
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import 'package:frosty/utils.dart';
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import 'package:frosty/utils/context_extensions.dart';
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import 'package:frosty/widgets/frosty_page_view.dart';
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import 'package:frosty/widgets/frosty_scrollbar.dart';
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/// ~2x default to keep richer message widgets (emotes, badges, replies) built
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/// ahead of fast scroll-back without holding the entire history.
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const _chatCacheExtent = ScrollCacheExtent.pixels(500.0);
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class Chat extends StatelessWidget {
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final ChatStore chatStore;
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final EdgeInsetsGeometry? listPadding;
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/// Callback to add a new chat tab.
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/// Passes this to ChatBottomBar for the ChatDetails menu.
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final VoidCallback onAddChat;
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/// When set, the widget operates in merged mode: messages come from all tabs
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/// and the active tab determines the send target.
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final ChatTabsStore? chatTabsStore;
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const Chat({
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super.key,
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required this.chatStore,
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this.listPadding,
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required this.onAddChat,
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this.chatTabsStore,
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});
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bool get _isMerged => chatTabsStore != null;
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@override
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Widget build(BuildContext context) {
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return Observer(
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builder: (context) {
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return Column(
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children: [
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Expanded(
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child: Stack(
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alignment: AlignmentDirectional.bottomCenter,
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children: [
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// Wrap only the message list with GestureDetector
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// so taps on ChatBottomBar don't trigger unfocus
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GestureDetector(
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behavior: HitTestBehavior.opaque,
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onTap: () {
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if (chatStore.assetsStore.showEmoteMenu) {
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chatStore.assetsStore.showEmoteMenu = false;
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} else if (chatStore.textFieldFocusNode.hasFocus) {
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chatStore.unfocusInput();
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}
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},
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child: MediaQuery(
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data: MediaQuery.of(context).copyWith(
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textScaler: chatStore.settings.messageScale.textScaler,
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),
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child: DefaultTextStyle(
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style: context.defaultTextStyle.copyWith(
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fontSize: chatStore.settings.fontSize,
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),
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child: Builder(
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builder: (context) {
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// Don't add bottom padding in horizontal landscape
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// (immersive mode with home indicator on side).
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// landscapeForceVerticalChat uses portrait layout
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// with normal system UI, so still needs padding.
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final isHorizontalLandscape =
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context.isLandscape &&
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!chatStore.settings.landscapeForceVerticalChat;
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final bottomPadding =
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chatStore.assetsStore.showEmoteMenu ||
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isHorizontalLandscape
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? 0.0
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: MediaQuery.of(context).padding.bottom;
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final scrollController = _isMerged
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? chatTabsStore!.mergedScrollController
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: chatStore.scrollController;
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// Freeze the message list while a finger rests on a
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// message so a long-press target can't scroll out
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// from under it (which would dispose its recognizer
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// mid-press). The store resumes flowing as soon as
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// the pointer moves like a scroll, so scrolling is
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// never interrupted — only a stationary hold pauses.
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void onDown(PointerDownEvent e) => _isMerged
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? chatTabsStore!.onMessageListPointerDown(
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e.pointer,
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e.position,
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)
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: chatStore.onMessageListPointerDown(
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e.pointer,
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e.position,
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);
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void onMove(PointerMoveEvent e) => _isMerged
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? chatTabsStore!.onMessageListPointerMove(
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e.pointer,
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e.position,
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)
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: chatStore.onMessageListPointerMove(
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e.pointer,
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e.position,
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);
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void onUp(int pointer) => _isMerged
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? chatTabsStore!.onMessageListPointerUp(pointer)
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: chatStore.onMessageListPointerUp(pointer);
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return Listener(
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onPointerDown: onDown,
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onPointerMove: onMove,
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onPointerUp: (e) => onUp(e.pointer),
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onPointerCancel: (e) => onUp(e.pointer),
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child: FrostyScrollbar(
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controller: scrollController,
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padding: EdgeInsets.only(
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top: MediaQuery.of(context).padding.top,
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bottom:
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chatStore.bottomBarHeight + bottomPadding,
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),
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child: Observer(
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builder: (context) {
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return _isMerged
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? _buildMergedList(
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scrollController,
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bottomPadding,
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)
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: _buildNormalList(
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scrollController,
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bottomPadding,
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);
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},
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),
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),
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);
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},
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),
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),
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),
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),
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Positioned(
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left: 0,
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right: 0,
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bottom: 0,
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child: ChatBottomBar(
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chatStore: chatStore,
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onAddChat: onAddChat,
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channelDisplayName: _isMerged
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? getReadableName(
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chatTabsStore!.activeTab.displayName,
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chatTabsStore!.activeTab.channelLogin,
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)
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: null,
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),
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),
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_buildResumeScrollButton(),
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],
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),
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),
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_buildEmoteMenu(context),
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],
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);
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},
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);
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}
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Widget _buildNormalList(
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ScrollController scrollController,
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double bottomPadding,
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) {
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return ListView.builder(
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reverse: true,
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padding: (listPadding ?? EdgeInsets.zero).add(
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EdgeInsets.only(bottom: chatStore.bottomBarHeight + bottomPadding),
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),
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addAutomaticKeepAlives: false,
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scrollCacheExtent: _chatCacheExtent,
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controller: scrollController,
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itemCount: chatStore.renderMessages.length,
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itemBuilder: (context, index) {
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final ircMessage = chatStore
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.renderMessages[chatStore.renderMessages.length - 1 - index];
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// Key by message identity so the list reconciles by message rather
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// than by slot. This keeps each message's element (and its gesture
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// recognizers) bound to the same message when new messages arrive
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// mid-interaction, fixing long-press landing on the wrong message.
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return ChatMessage(
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key: ObjectKey(ircMessage),
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ircMessage: ircMessage,
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chatStore: chatStore,
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);
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},
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);
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}
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Widget _buildMergedList(
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ScrollController scrollController,
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double bottomPadding,
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) {
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final mergedMessages = chatTabsStore!.mergedMessages;
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final channelIdToUserTwitch = chatTabsStore!.mergedChannelIdToUserTwitch;
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final currentChannelId = chatTabsStore!.activeTab.channelId;
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return ListView.builder(
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reverse: true,
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padding: (listPadding ?? EdgeInsets.zero).add(
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EdgeInsets.only(bottom: chatStore.bottomBarHeight + bottomPadding),
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),
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addAutomaticKeepAlives: false,
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scrollCacheExtent: _chatCacheExtent,
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controller: scrollController,
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itemCount: mergedMessages.length,
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itemBuilder: (context, index) {
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final merged = mergedMessages[mergedMessages.length - 1 - index];
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return ChatMessage(
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key: ObjectKey(merged.ircMessage),
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ircMessage: merged.ircMessage,
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chatStore: merged.chatStore,
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inputChatStore: chatStore,
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onActivateSourceTab: () {
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final tabs = chatTabsStore!.tabs;
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final idx = tabs.indexWhere(
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(t) => t.channelId == merged.chatStore.channelId,
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);
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if (idx != -1 && idx != chatTabsStore!.activeTabIndex) {
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chatTabsStore!.setActiveTab(idx, silent: true);
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}
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},
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overrideChannelIdToUserTwitch: channelIdToUserTwitch,
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overrideCurrentChannelId: currentChannelId,
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);
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},
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);
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}
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Widget _buildResumeScrollButton() {
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return Builder(
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builder: (context) {
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final isHorizontalLandscape =
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context.isLandscape &&
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!chatStore.settings.landscapeForceVerticalChat;
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return AnimatedPadding(
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duration: const Duration(milliseconds: 200),
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padding: EdgeInsets.only(
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left: 4,
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top: 4,
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right: 4,
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bottom:
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chatStore.bottomBarHeight +
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(chatStore.assetsStore.showEmoteMenu || isHorizontalLandscape
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? 0
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: MediaQuery.of(context).padding.bottom),
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),
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child: Observer(
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builder: (_) {
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final isAutoScrolling = _isMerged
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? chatTabsStore!.mergedAutoScroll
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: chatStore.autoScroll;
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final bufferCount = _isMerged
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? chatTabsStore!.mergedBufferCount
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: chatStore.messageBuffer.length;
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final onResume = _isMerged
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? chatTabsStore!.resumeMergedScroll
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: chatStore.resumeScroll;
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return AnimatedSwitcher(
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duration: const Duration(milliseconds: 200),
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switchInCurve: Curves.easeOut,
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switchOutCurve: Curves.easeIn,
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child: isAutoScrolling
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? null
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: ElevatedButton.icon(
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onPressed: onResume,
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icon: const Icon(Icons.arrow_downward_rounded),
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label: Text(
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bufferCount > 0
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? '$bufferCount new ${bufferCount == 1 ? 'message' : 'messages'}'
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: 'Resume scroll',
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style: const TextStyle(
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fontFeatures: [FontFeature.tabularFigures()],
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),
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),
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),
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);
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},
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),
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);
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},
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);
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}
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Widget _buildEmoteMenu(BuildContext context) {
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final menuHeight = context.screenHeight / (context.isPortrait ? 3 : 2);
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return AnimatedContainer(
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curve: Curves.ease,
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duration: const Duration(milliseconds: 200),
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height: chatStore.assetsStore.showEmoteMenu ? menuHeight : 0,
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child: AnimatedSwitcher(
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duration: const Duration(milliseconds: 100),
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switchInCurve: Curves.easeOut,
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switchOutCurve: Curves.easeIn,
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child: chatStore.assetsStore.showEmoteMenu
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? ClipRect(
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// Lay the content out at its full target height regardless of
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// the animated container's current height, then clip — the
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// Column would otherwise overflow (RenderFlex error) as the
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// height tweens toward zero and can no longer fit the Divider.
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child: OverflowBox(
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minHeight: 0,
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maxHeight: menuHeight,
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alignment: Alignment.topCenter,
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child: Column(
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children: [
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const Divider(),
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Expanded(
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child: FrostyPageView(
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headers: [
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'Recent',
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if (chatStore.settings.showTwitchEmotes) 'Twitch',
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if (chatStore.settings.show7TVEmotes) '7TV',
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if (chatStore.settings.showBTTVEmotes) 'BTTV',
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if (chatStore.settings.showFFZEmotes) 'FFZ',
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],
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tabActions: {
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if (chatStore.assetsStore.recentEmotes.isNotEmpty)
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0: IconButton(
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onPressed: () {
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chatStore.assetsStore.recentEmotes.clear();
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chatStore.updateNotification(
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'Recent emotes cleared',
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);
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},
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icon: const Icon(Icons.delete_outline_rounded),
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tooltip: 'Clear recent emotes',
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iconSize: 20,
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),
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},
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children: [
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RecentEmotesPanel(chatStore: chatStore),
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if (chatStore.settings.showTwitchEmotes)
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EmoteMenuPanel(
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chatStore: chatStore,
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twitchEmotes: chatStore
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.assetsStore
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.userEmoteSectionToEmotes,
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),
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...[
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if (chatStore.settings.show7TVEmotes)
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chatStore.assetsStore.sevenTVEmotes,
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if (chatStore.settings.showBTTVEmotes)
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chatStore.assetsStore.bttvEmotes,
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if (chatStore.settings.showFFZEmotes)
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chatStore.assetsStore.ffzEmotes,
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].map(
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(emotes) => EmoteMenuPanel(
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chatStore: chatStore,
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emotes: emotes,
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),
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),
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],
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),
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),
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],
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),
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),
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)
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: null,
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),
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);
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}
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}
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