Flutter Web - TextFormField 禁用复制和粘贴

Question

我想在我的文本字段上禁用复制和粘贴功能，但遗憾的是它在 web 上没有按预期工作。我尝试了以下 enableInteractiveSelection 和 toolbarOptions 但我仍然可以复制并粘贴到网络中的文本字段。这是什么解决方案。谢谢

  TextFormField(
    enableInteractiveSelection: false,
    toolbarOptions: ToolbarOptions(
      copy: false,
      paste: false,
      cut: false,
      selectAll: false,
    ),
  )

Answer 1

如果你正在考虑快捷键，我们需要监听LogicalKeySet。

结果

我是这样做的:

用于复制粘贴键

///* for mac replace  LogicalKeyboardKey.control, with LogicalKeyboardKey.meta
final selectableKeySetwindows = LogicalKeySet(
  LogicalKeyboardKey.control,
  LogicalKeyboardKey.keyA,
);
final pasteKeySetwindows = LogicalKeySet(
  LogicalKeyboardKey.control,
  LogicalKeyboardKey.keyV,
);

/// i dont have any ios device 😅,let me know what it produce.
final selectableKeySetMac = LogicalKeySet(
  LogicalKeyboardKey.meta,
  LogicalKeyboardKey.keyA,
);

class SelectionIntent extends Intent {}

class PasteIntent extends Intent {}

将处理事件的小部件

class DisableShortcut extends StatelessWidget {
  final Widget child;

  const DisableShortcut({
    Key? key,
    required this.child,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return FocusableActionDetector(
      shortcuts: {
        selectableKeySetwindows: SelectionIntent(),
        pasteKeySetwindows: PasteIntent(),
      },
      actions: {
        SelectionIntent: CallbackAction(
          onInvoke: (intent) {
            ScaffoldMessenger.of(context)
                .showSnackBar(SnackBar(content: Text("Copy is forbidden")));
            return FocusScope.of(context).requestFocus(FocusNode());
          },
        ),
        PasteIntent: CallbackAction(
          onInvoke: (intent) async {
            // ClipboardData? data = await Clipboard.getData('text/plain');
            // print(" paste callBack ${data!.text}");
            return ScaffoldMessenger.of(context)
                .showSnackBar(SnackBar(content: Text("Paste is forbidden")));
          },
        )
      },
      autofocus: true,
      child: child,
    );
  }
}

我的测试小工具

 @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            TextField(),
            TextField(),
            DisableShortcut(
              child: TextField(
                enableInteractiveSelection: false,
                toolbarOptions: ToolbarOptions(
                  copy: false,
                  cut: false,
                  paste: false,
                  selectAll: false,
                ),
              ),
            ),
          ],
        ),
      ),
    );