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Merged
ChandruWritesCode merged 2 commits into from
Jul 5, 2026
Merged

#59 feat to improve scrolling experience on chatpage #60

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55f4591
made some pages theme ready and UI/UX improvs
ChandruWritesCode Jul 5, 2026
ed01dd8
Merge pull request #7 from ChandruWritesCode/35-markdown-support-in-m…
ChandruWritesCode Jul 5, 2026
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123 changes: 81 additions & 42 deletions mobile/lib/pages/chat_page.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -18,15 +18,17 @@ class ChatPage extends StatefulWidget {
State<ChatPage> createState() => _ChatPageState();
}

class _ChatPageState extends State<ChatPage> {
class _ChatPageState extends State<ChatPage> with WidgetsBindingObserver {
final ScrollController _scrollController = ScrollController();
bool _showScrollToBottom = false;
bool _isNearBottom = true;
final Set<int> _selectedIndices = {};
dynamic _replyingToMessage;

@override
void initState() {
super.initState();
WidgetsBinding.instance.addObserver(this);
_scrollController.addListener(_scrollListener);

WidgetsBinding.instance.addPostFrameCallback((_) {
Expand All @@ -36,6 +38,7 @@ class _ChatPageState extends State<ChatPage> {

@override
void dispose() {
WidgetsBinding.instance.removeObserver(this);
_scrollController.removeListener(_scrollListener);
_scrollController.dispose();
WidgetsBinding.instance.addPostFrameCallback((_) {
Expand All @@ -46,12 +49,27 @@ class _ChatPageState extends State<ChatPage> {
super.dispose();
}

@override
void didChangeMetrics() {
super.didChangeMetrics();
if (_isNearBottom) {
WidgetsBinding.instance.addPostFrameCallback((_) {
if (mounted) {
_scrollToBottom(animated: true);
}
});
}
}

void _scrollListener() {
if (!_scrollController.hasClients) return;

final isScrolledUp =
_scrollController.position.maxScrollExtent - _scrollController.offset >
100;
final maxScrollExtent = _scrollController.position.maxScrollExtent;
final offset = _scrollController.offset;

_isNearBottom = maxScrollExtent - offset <= 100;

final isScrolledUp = maxScrollExtent - offset > 100;

if (isScrolledUp != _showScrollToBottom) {
setState(() {
Expand Down Expand Up @@ -120,9 +138,9 @@ class _ChatPageState extends State<ChatPage> {
_clearSelection();
}

String _getPresenceStatusText(ChatController state) {
if (state.isPeerTyping) return 'typing...';
return state.isPeerOnline ? 'Online' : 'Offline';
UserStatus _getPresenceStatusText(ChatController state) {
if (state.isPeerTyping) return UserStatus.typing;
return state.isPeerOnline ? UserStatus.online : UserStatus.offline;
}

bool _isSameDay(DateTime date1, DateTime date2) {
Expand All @@ -145,6 +163,7 @@ class _ChatPageState extends State<ChatPage> {
final chatState = context.watch<ChatController>();
final activeChat = chatState.activeChat;
final isSelectionMode = _selectedIndices.isNotEmpty;
final theme = Theme.of(context);

return PopScope(
canPop: !isSelectionMode,
Expand All @@ -154,35 +173,42 @@ class _ChatPageState extends State<ChatPage> {
});
},
child: Scaffold(
backgroundColor: Colors.white,
backgroundColor: theme.scaffoldBackgroundColor,
extendBody: true,
extendBodyBehindAppBar: true,

appBar: PreferredSize(
preferredSize: const Size.fromHeight(kToolbarHeight),
child: AnimatedSwitcher(
duration: const Duration(milliseconds: 250),
child: isSelectionMode
? AppBar(
key: const ValueKey('SelectionAppBar'),
backgroundColor: Colors.blueAccent,
backgroundColor: theme.colorScheme.primary,
leading: IconButton(
icon: const Icon(Icons.close, color: Colors.white),
icon: Icon(
Icons.close,
color: theme.colorScheme.onPrimary,
),
onPressed: _clearSelection,
),
title: Text(
'${_selectedIndices.length} Selected',
style: const TextStyle(color: Colors.white),
style: TextStyle(color: theme.colorScheme.onPrimary),
),
actions: [
IconButton(
icon: const Icon(Icons.copy, color: Colors.white),
icon: Icon(
Icons.copy,
color: theme.colorScheme.onPrimary,
),
onPressed: () => _copySelectedMessages(activeChat),
),
IconButton(
icon: const Icon(Icons.delete, color: Colors.white),
icon: Icon(
Icons.delete,
color: theme.colorScheme.onPrimary,
),
onPressed: () {
// TODO: delete on DB
_clearSelection();
},
),
Expand All @@ -195,14 +221,16 @@ class _ChatPageState extends State<ChatPage> {
),
),
),

body: Stack(
children: [
activeChat.isEmpty
? const Center(
? Center(
child: Text(
"No messages yet",
style: TextStyle(color: Colors.grey, fontSize: 14),
style: TextStyle(
color: theme.colorScheme.onSurfaceVariant,
fontSize: 14,
),
),
)
: ListView.builder(
Expand All @@ -214,7 +242,7 @@ class _ChatPageState extends State<ChatPage> {
ScrollViewKeyboardDismissBehavior.onDrag,
padding: EdgeInsets.only(
top: 120,
bottom: _replyingToMessage != null ? 180 : 120,
bottom: _replyingToMessage != null ? 220 : 140,
left: 16,
right: 16,
),
Expand Down Expand Up @@ -258,27 +286,29 @@ class _ChatPageState extends State<ChatPage> {
vertical: 4,
),
decoration: BoxDecoration(
color: Colors.grey[200],
color:
theme.colorScheme.surfaceContainerHighest,
borderRadius: BorderRadius.circular(12),
),
child: Text(
_formatDateSeparator(msg.createdAt),
style: const TextStyle(
style: TextStyle(
fontSize: 12,
color: Colors.black54,
color: theme.colorScheme.onSurfaceVariant,
),
),
),
),

GestureDetector(
onLongPress: () => _toggleSelection(index),
onTap: () {
if (isSelectionMode) _toggleSelection(index);
},
child: Container(
color: isSelected
? Colors.blue.withValues(alpha: 0.2)
? theme.colorScheme.primary.withValues(
alpha: 0.2,
)
: Colors.transparent,
child: Dismissible(
key: ValueKey(
Expand All @@ -295,9 +325,11 @@ class _ChatPageState extends State<ChatPage> {
alignment: Alignment.centerLeft,
padding: const EdgeInsets.only(left: 16),
color: Colors.transparent,
child: const Icon(
child: Icon(
Icons.reply,
color: Colors.grey,
color: theme.colorScheme.primary.withValues(
alpha: 0.7,
),
),
),
child: ChatBubble(
Expand All @@ -313,10 +345,9 @@ class _ChatPageState extends State<ChatPage> {
);
},
),

Positioned(
right: 16,
bottom: _replyingToMessage != null ? 140 : 90,
bottom: _replyingToMessage != null ? 180 : 100,
child: AnimatedScale(
scale: _showScrollToBottom ? 1.0 : 0.0,
duration: const Duration(milliseconds: 250),
Expand All @@ -326,16 +357,15 @@ class _ChatPageState extends State<ChatPage> {
duration: const Duration(milliseconds: 200),
child: FloatingActionButton(
mini: true,
backgroundColor: Colors.white,
foregroundColor: Colors.blue,
backgroundColor: theme.colorScheme.surface,
foregroundColor: theme.colorScheme.primary,
elevation: 4,
onPressed: () => _scrollToBottom(animated: true),
child: const Icon(Icons.keyboard_arrow_down),
),
),
),
),

Align(
alignment: Alignment.bottomCenter,
child: Column(
Expand All @@ -345,16 +375,19 @@ class _ChatPageState extends State<ChatPage> {
Container(
padding: const EdgeInsets.all(12),
decoration: BoxDecoration(
color: Colors.white,
border: const Border(
left: BorderSide(color: Colors.blue, width: 4),
top: BorderSide(color: Colors.black12, width: 1),
color: theme.colorScheme.surface,
border: Border(
left: BorderSide(
color: theme.colorScheme.primary,
width: 4,
),
top: BorderSide(color: theme.dividerColor, width: 1),
),
boxShadow: const [
boxShadow: [
BoxShadow(
color: Colors.black12,
color: theme.shadowColor.withValues(alpha: 0.1),
blurRadius: 4,
offset: Offset(0, -2),
offset: const Offset(0, -2),
),
],
),
Expand All @@ -364,11 +397,11 @@ class _ChatPageState extends State<ChatPage> {
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
Text(
"Replying to message",
style: TextStyle(
fontWeight: FontWeight.bold,
color: Colors.blue,
color: theme.colorScheme.primary,
fontSize: 12,
),
),
Expand All @@ -377,13 +410,19 @@ class _ChatPageState extends State<ChatPage> {
_replyingToMessage.content,
maxLines: 1,
overflow: TextOverflow.ellipsis,
style: const TextStyle(color: Colors.black87),
style: TextStyle(
color: theme.colorScheme.onSurface,
),
),
],
),
),
IconButton(
icon: const Icon(Icons.close, size: 20),
icon: Icon(
Icons.close,
size: 20,
color: theme.iconTheme.color,
),
onPressed: () =>
setState(() => _replyingToMessage = null),
),
Expand Down
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