feat: выделение текста в сообщении

2026-07-12 21:37:36 +07:00
parent cbc758b991
commit 53e549214e
8 changed files with 577 additions and 8 deletions
@@ -469,6 +469,8 @@ class _ChatScreenState extends State<ChatScreen>
  final ValueNotifier<bool> _animojiHold = ValueNotifier(true);

  final ValueNotifier<Set<String>> _selectedIds = ValueNotifier(const {});
+  final ValueNotifier<({String id, Offset pos})?> _textSelection =
+      ValueNotifier(null);
  late final AnimationController _selectionAnim;

  bool get _selectionMode => _selectedIds.value.isNotEmpty;
@@ -503,6 +505,7 @@ class _ChatScreenState extends State<ChatScreen>
    _scrollController.addListener(_maybeLoadMoreHistory);
    _scrollController.addListener(_recordScrollPixels);
    _scrollController.addListener(_scheduleReadMarker);
+    _scrollController.addListener(_exitTextSelectionOnScroll);
    AppVisualStyle.current.addListener(_onVisualStyleChanged);
    AppChatChrome.current.addListener(_onVisualStyleChanged);
    _shimmerController = AnimationController(
@@ -1322,6 +1325,7 @@ class _ChatScreenState extends State<ChatScreen>
    _scrollController.removeListener(_maybeLoadMoreHistory);
    _scrollController.removeListener(_recordScrollPixels);
    _scrollController.removeListener(_scheduleReadMarker);
+    _scrollController.removeListener(_exitTextSelectionOnScroll);
    _readMarkTimer?.cancel();
    AppVisualStyle.current.removeListener(_onVisualStyleChanged);
    AppChatChrome.current.removeListener(_onVisualStyleChanged);
@@ -1370,6 +1374,7 @@ class _ChatScreenState extends State<ChatScreen>
    _searchFocusNode.dispose();
    _search.dispose();
    _selectedIds.dispose();
+    _textSelection.dispose();
    _messageController.dispose();
    _messageFocusNode.dispose();
    _stickers.dispose();
@@ -1512,15 +1517,38 @@ class _ChatScreenState extends State<ChatScreen>
    if (!next.remove(message.id)) next.add(message.id);
    Haptics.selection();
    _selectedIds.value = next;
+    if (!next.contains(message.id)) _exitTextSelection(message.id);
    _syncSelectionAnim();
  }

  void _clearSelection() {
+    _exitTextSelection();
    if (_selectedIds.value.isEmpty) return;
    _selectedIds.value = const {};
    _syncSelectionAnim();
  }

+  void _startTextSelection(CachedMessage message, Offset globalPosition) {
+    if (message.isControl || (message.text?.isEmpty ?? true)) return;
+    _textSelection.value = (id: message.id, pos: globalPosition);
+  }
+
+  void _exitTextSelection([String? onlyId]) {
+    final current = _textSelection.value;
+    if (current == null) return;
+    if (onlyId != null && current.id != onlyId) return;
+    _textSelection.value = null;
+  }
+
+  void _exitTextSelectionOnScroll() {
+    if (_textSelection.value == null) return;
+    if (!_scrollController.hasClients) return;
+    if (_scrollController.position.userScrollDirection !=
+        ScrollDirection.idle) {
+      _exitTextSelection();
+    }
+  }
+
  void _syncSelectionAnim() {
    if (_selectedIds.value.isEmpty) {
      _selectionAnim.reverse();
@@ -3964,13 +3992,21 @@ class _ChatScreenState extends State<ChatScreen>
        ? math.max(mq.viewInsets.bottom, _keyboardReserve)
        : mq.viewInsets.bottom;
    return ListenableBuilder(
-      listenable: Listenable.merge([_selectedIds, _search.searchMode]),
+      listenable: Listenable.merge([
+        _selectedIds,
+        _search.searchMode,
+        _textSelection,
+      ]),
      builder: (context, child) => PopScope(
-        canPop: _selectedIds.value.isEmpty && !_search.searchMode.value,
+        canPop: _selectedIds.value.isEmpty &&
+            !_search.searchMode.value &&
+            _textSelection.value == null,
        onPopInvokedWithResult: (didPop, _) {
          if (didPop) return;
          if (_search.searchMode.value) {
            _closeSearch();
+          } else if (_textSelection.value != null) {
+            _exitTextSelection();
          } else {
            _clearSelection();
          }
@@ -4338,6 +4374,8 @@ class _ChatScreenState extends State<ChatScreen>
                            : (emoji) => _reactToMessage(message, emoji),
                        peerName: widget.name,
                        peerAvatarUrl: widget.imageUrl,
+                        textSelection: _textSelection,
+                        onExitTextSelection: _exitTextSelection,
                      );

                      final canReport = !isMe && !message.isControl;
@@ -4353,6 +4391,8 @@ class _ChatScreenState extends State<ChatScreen>
                        isSelectionActive: () => _selectionMode,
                        onToggleSelection: () => _toggleSelection(message),
                        onEnterSelection: () => _enterSelection(message),
+                        onStartTextSelection: (pos) =>
+                            _startTextSelection(message, pos),
                        onDelete: () => _confirmDeleteMessage(message, isMe),
                        onEdit: _canEditMessage(message)
                            ? () => _startEditMessage(message)
@@ -5664,6 +5704,7 @@ class _SelectableMessageRow extends StatefulWidget {
  final bool Function() isSelectionActive;
  final VoidCallback onToggleSelection;
  final VoidCallback onEnterSelection;
+  final void Function(Offset globalPosition) onStartTextSelection;
  final VoidCallback onDelete;
  final VoidCallback? onEdit;
  final VoidCallback? onReply;
@@ -5685,6 +5726,7 @@ class _SelectableMessageRow extends StatefulWidget {
    required this.isSelectionActive,
    required this.onToggleSelection,
    required this.onEnterSelection,
+    required this.onStartTextSelection,
    required this.onDelete,
    this.onEdit,
    this.onReply,
@@ -5847,11 +5889,17 @@ class _SelectableMessageRowState extends State<_SelectableMessageRow> {
    });
  }

-  void _handleLongPress() {
-    if (widget.isSelectionActive()) {
-      widget.onToggleSelection();
-    } else {
+  void _handleLongPressStart(Offset globalPosition) {
+    if (!widget.isSelectionActive()) {
      widget.onEnterSelection();
+      return;
+    }
+    final selected = widget.selectedIds.value.contains(widget.message.id);
+    final hasText = widget.message.text?.isNotEmpty ?? false;
+    if (selected && hasText && !widget.message.isControl) {
+      widget.onStartTextSelection(globalPosition);
+    } else {
+      widget.onToggleSelection();
    }
  }

@@ -5896,7 +5944,7 @@ class _SelectableMessageRowState extends State<_SelectableMessageRow> {
              behavior: HitTestBehavior.opaque,
              onTapDown: (d) => _lastTapDown = d.globalPosition,
              onTap: _handleTap,
-              onLongPress: _handleLongPress,
+              onLongPressStart: (d) => _handleLongPressStart(d.globalPosition),
              onSecondaryTapDown: active ? null : _onSecondaryTapDown,
              child: ColoredBox(
                color: isSelected