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samples/experimental/context_menus/lib/full_page.dart

160 lines
5.7 KiB

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:url_launcher/url_launcher.dart';
import 'constants.dart';
import 'context_menu_region.dart';
import 'is_valid_email.dart';
import 'platform_selector.dart';
class FullPage extends StatelessWidget {
FullPage({
super.key,
required this.onChangedPlatform,
});
static const String route = 'full';
static const String title = 'Combined Example';
static const String subtitle =
'Combining several different types of custom menus.';
static const String url = '$kCodeUrl/full_page.dart';
final PlatformCallback onChangedPlatform;
final TextEditingController _controller = TextEditingController(
text: 'Custom menus everywhere. me@example.com',
);
DialogRoute _showDialog(BuildContext context, String message) {
return DialogRoute<void>(
context: context,
builder: (context) => AlertDialog(title: Text(message)),
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text(FullPage.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: ContextMenuRegion(
contextMenuBuilder: (context, offset) {
return AdaptiveTextSelectionToolbar.buttonItems(
anchors: TextSelectionToolbarAnchors(
primaryAnchor: offset,
),
buttonItems: <ContextMenuButtonItem>[
ContextMenuButtonItem(
onPressed: () {
ContextMenuController.removeAny();
Navigator.of(context).pop();
},
label: 'Back',
),
],
);
},
child: Center(
child: SizedBox(
width: 400.0,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
const Text(
'This example simply shows how many of the previous examples can be combined in a single app.',
),
const SizedBox(
height: 60.0,
),
ContextMenuRegion(
contextMenuBuilder: (context, offset) {
return AdaptiveTextSelectionToolbar.buttonItems(
anchors: TextSelectionToolbarAnchors(
primaryAnchor: offset,
),
buttonItems: <ContextMenuButtonItem>[
ContextMenuButtonItem(
onPressed: () {
ContextMenuController.removeAny();
Navigator.of(context).push(_showDialog(
context, 'Image saved! (not really though)'));
},
label: 'Save',
),
],
);
},
child: const SizedBox(
width: 200.0,
height: 200.0,
child: FlutterLogo(),
),
),
Container(height: 20.0),
TextField(
controller: _controller,
contextMenuBuilder: (context, editableTextState) {
final TextEditingValue value =
editableTextState.textEditingValue;
final List<ContextMenuButtonItem> buttonItems =
editableTextState.contextMenuButtonItems;
if (isValidEmail(value.selection.textInside(value.text))) {
buttonItems.insert(
0,
ContextMenuButtonItem(
label: 'Send email',
onPressed: () {
ContextMenuController.removeAny();
Navigator.of(context).push(_showDialog(
context, 'You clicked send email'));
},
));
}
return AdaptiveTextSelectionToolbar(
anchors: editableTextState.contextMenuAnchors,
// Build the default buttons, but make them look crazy.
// Note that in a real project you may want to build
// different buttons depending on the platform.
children: buttonItems.map((buttonItem) {
return CupertinoButton(
borderRadius: null,
color: const Color(0xffaaaa00),
disabledColor: const Color(0xffaaaaff),
onPressed: buttonItem.onPressed,
padding: const EdgeInsets.all(10.0),
pressedOpacity: 0.7,
child: SizedBox(
width: 200.0,
child: Text(
CupertinoTextSelectionToolbarButton
.getButtonLabel(context, buttonItem),
),
),
);
}).toList(),
);
},
),
],
),
),
),
),
);
}
}