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samples/experimental/context_menus/lib/global_selection_page.dart

82 lines
2.6 KiB

import 'package:flutter/material.dart';
import 'package:url_launcher/url_launcher.dart';
import 'constants.dart';
import 'platform_selector.dart';
class GlobalSelectionPage extends StatelessWidget {
GlobalSelectionPage({
Key? key,
required this.onChangedPlatform,
}) : super(key: key);
static const String route = 'global-selection';
static const String title = 'Global Selection Example';
static const String subtitle = 'Context menus in and out of global selection';
static const String url = '$kCodeUrl/global_selection_page.dart';
final PlatformCallback onChangedPlatform;
final TextEditingController _controller = TextEditingController(
text: 'TextFields still show their specific context menu.',
);
@override
Widget build(BuildContext context) {
return SelectionArea(
contextMenuBuilder:
(BuildContext context, SelectableRegionState selectableRegionState) {
return AdaptiveTextSelectionToolbar.buttonItems(
anchors: selectableRegionState.contextMenuAnchors,
buttonItems: <ContextMenuButtonItem>[
...selectableRegionState.contextMenuButtonItems,
ContextMenuButtonItem(
onPressed: () {
ContextMenuController.removeAny();
Navigator.of(context).pop();
},
label: 'Back',
),
],
);
},
child: Scaffold(
appBar: AppBar(
title: const Text(GlobalSelectionPage.title),
actions: <Widget>[
PlatformSelector(
onChangedPlatform: onChangedPlatform,
),
IconButton(
icon: const Icon(Icons.code),
onPressed: () async {
if (!await launchUrl(Uri.parse(url))) {
throw 'Could not launch $url';
}
},
),
],
),
body: Center(
child: SizedBox(
width: 400.0,
child: ListView(
children: <Widget>[
const SizedBox(height: 20.0),
const Text(
'This entire page is wrapped in a SelectionArea with a custom context menu. Clicking on any of the plain text, including the AppBar title, will show the custom menu.',
),
const SizedBox(height: 40.0),
TextField(controller: _controller),
const SizedBox(height: 40.0),
const SelectableText(
'SelectableText also shows its own separate context menu.'),
],
),
),
),
),
);
}
}