144 lines
3.5 KiB
Dart
144 lines
3.5 KiB
Dart
import 'dart:async';
|
|
|
|
import 'package:flutter/services.dart';
|
|
import 'package:flutter/widgets.dart';
|
|
|
|
class DialogKeyboardShortcuts extends StatefulWidget {
|
|
const DialogKeyboardShortcuts({
|
|
super.key,
|
|
required this.child,
|
|
this.onEscape,
|
|
this.onSubmit,
|
|
this.enableFocusTrap = true,
|
|
});
|
|
|
|
final Widget child;
|
|
final VoidCallback? onEscape;
|
|
final FutureOr<void> Function()? onSubmit;
|
|
final bool enableFocusTrap;
|
|
|
|
@override
|
|
State<DialogKeyboardShortcuts> createState() =>
|
|
_DialogKeyboardShortcutsState();
|
|
}
|
|
|
|
class _DialogKeyboardShortcutsState extends State<DialogKeyboardShortcuts> {
|
|
late final FocusScopeNode _focusScopeNode;
|
|
|
|
@override
|
|
void initState() {
|
|
super.initState();
|
|
_focusScopeNode = FocusScopeNode(debugLabel: 'DialogKeyboardShortcuts');
|
|
}
|
|
|
|
@override
|
|
void dispose() {
|
|
_focusScopeNode.dispose();
|
|
super.dispose();
|
|
}
|
|
|
|
bool get _hasSubmitHandler => widget.onSubmit != null;
|
|
|
|
bool _shouldHandleSubmitKey() {
|
|
if (!_hasSubmitHandler) {
|
|
return false;
|
|
}
|
|
final primaryFocus = FocusManager.instance.primaryFocus;
|
|
if (primaryFocus == null) {
|
|
return true;
|
|
}
|
|
final context = primaryFocus.context;
|
|
if (context == null) {
|
|
return true;
|
|
}
|
|
EditableText? editable;
|
|
final widget = context.widget;
|
|
if (widget is EditableText) {
|
|
editable = widget;
|
|
} else {
|
|
editable = context.findAncestorWidgetOfExactType<EditableText>();
|
|
}
|
|
if (editable != null) {
|
|
// Multi-line 입력에서는 엔터 키를 입력값으로 전달한다.
|
|
final bool isMultiline =
|
|
editable.maxLines == null || editable.maxLines! > 1;
|
|
if (isMultiline) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
Map<ShortcutActivator, Intent> get _shortcuts {
|
|
final shortcuts = <ShortcutActivator, Intent>{
|
|
LogicalKeySet(LogicalKeyboardKey.escape): const _DismissIntent(),
|
|
};
|
|
if (_hasSubmitHandler) {
|
|
shortcuts[LogicalKeySet(LogicalKeyboardKey.enter)] =
|
|
const _SubmitIntent();
|
|
shortcuts[LogicalKeySet(LogicalKeyboardKey.numpadEnter)] =
|
|
const _SubmitIntent();
|
|
}
|
|
return shortcuts;
|
|
}
|
|
|
|
Map<Type, Action<Intent>> get _actions {
|
|
return <Type, Action<Intent>>{
|
|
_DismissIntent: CallbackAction<_DismissIntent>(
|
|
onInvoke: (intent) {
|
|
widget.onEscape?.call();
|
|
return null;
|
|
},
|
|
),
|
|
_SubmitIntent: CallbackAction<_SubmitIntent>(
|
|
onInvoke: (intent) {
|
|
if (_shouldHandleSubmitKey()) {
|
|
final callback = widget.onSubmit;
|
|
if (callback != null) {
|
|
final result = callback();
|
|
if (result is Future<void>) {
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
return null;
|
|
},
|
|
),
|
|
};
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
Widget content = widget.child;
|
|
|
|
if (widget.enableFocusTrap) {
|
|
content = FocusTraversalGroup(
|
|
policy: WidgetOrderTraversalPolicy(),
|
|
child: FocusScope(
|
|
node: _focusScopeNode,
|
|
autofocus: true,
|
|
child: content,
|
|
),
|
|
);
|
|
} else {
|
|
content = FocusTraversalGroup(
|
|
policy: WidgetOrderTraversalPolicy(),
|
|
child: FocusScope(autofocus: true, child: content),
|
|
);
|
|
}
|
|
|
|
return Shortcuts(
|
|
shortcuts: _shortcuts,
|
|
child: Actions(actions: _actions, child: content),
|
|
);
|
|
}
|
|
}
|
|
|
|
class _DismissIntent extends Intent {
|
|
const _DismissIntent();
|
|
}
|
|
|
|
class _SubmitIntent extends Intent {
|
|
const _SubmitIntent();
|
|
}
|