text_selection_controls.dart

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

import 'package:omi/utils/l10n_extensions.dart';

class OmiTextSelectionToolbar extends StatelessWidget {
  final Offset anchorAbove;
  final Offset anchorBelow;
  final List<Widget> children;

  const OmiTextSelectionToolbar({
    super.key,
    required this.anchorAbove,
    required this.anchorBelow,
    required this.children,
  });

  @override
  Widget build(BuildContext context) {
    return CupertinoTheme(
      data: const CupertinoThemeData(brightness: Brightness.dark, primaryColor: Colors.blue),
      child: CupertinoTextSelectionToolbar(anchorAbove: anchorAbove, anchorBelow: anchorBelow, children: children),
    );
  }
}

class OmiToolbarAction extends StatelessWidget {
  final String label;
  final VoidCallback onPressed;

  const OmiToolbarAction({super.key, required this.label, required this.onPressed});

  @override
  Widget build(BuildContext context) {
    return CupertinoTextSelectionToolbarButton.text(onPressed: onPressed, text: label);
  }
}

class OmiToolbarDivider extends StatelessWidget {
  const OmiToolbarDivider({super.key});

  @override
  Widget build(BuildContext context) {
    return Container(
      width: 1.0 / MediaQuery.of(context).devicePixelRatio,
      height: 20,
      color: const Color.fromARGB(70, 255, 255, 255),
    );
  }
}

Widget omiSelectionMenuBuilder(
  BuildContext context,
  dynamic delegate,
  Function(String) onAskOmi, {
  String? selectedText,
}) {
  final List<Widget> toolbarItems = [];
  String text = selectedText ?? '';

  if (delegate is TextSelectionDelegate && text.isEmpty) {
    text = delegate.textEditingValue.selection.textInside(delegate.textEditingValue.text);
  }

  // Ask Omi
  if (text.trim().isNotEmpty) {
    toolbarItems.add(
      OmiToolbarAction(
        label: context.l10n.askOmi,
        onPressed: () {
          onAskOmi(text);
          delegate.hideToolbar();
        },
      ),
    );
  }

  if (text.isNotEmpty) {
    if (toolbarItems.isNotEmpty) {
      toolbarItems.add(const OmiToolbarDivider());
    }
    toolbarItems.add(
      OmiToolbarAction(
        label: context.l10n.copy,
        onPressed: () {
          delegate.copySelection(SelectionChangedCause.toolbar);
          delegate.hideToolbar();
          ScaffoldMessenger.of(
            context,
          ).showSnackBar(SnackBar(content: Text(context.l10n.messageCopied), duration: const Duration(seconds: 2)));
        },
      ),
    );
  }

  // Select All
  if (toolbarItems.isNotEmpty) {
    toolbarItems.add(const OmiToolbarDivider());
  }
  toolbarItems.add(
    OmiToolbarAction(
      label: context.l10n.selectAll,
      onPressed: () {
        delegate.selectAll(SelectionChangedCause.toolbar);
      },
    ),
  );

  if (toolbarItems.isEmpty) {
    return const SizedBox.shrink();
  }

  return OmiTextSelectionToolbar(
    anchorAbove: delegate.contextMenuAnchors.primaryAnchor,
    anchorBelow: delegate.contextMenuAnchors.secondaryAnchor ?? delegate.contextMenuAnchors.primaryAnchor,
    children: toolbarItems,
  );
}