cpd/lib/widgets/addhabit_popup.dart

import 'package:flutter/material.dart';

// save button + speichern durch enter

class AddHabitPopup extends StatefulWidget {
  //final Function? onHabitAdded;
  //final Habit todo;
  final void Function(String, String) onSubmit;

  @override
  _AddHabitPopupState createState() => _AddHabitPopupState();

  const AddHabitPopup({
    super.key,
  //this.todo,
  required this.onSubmit,
  });
  }


class _AddHabitPopupState extends State<AddHabitPopup> {
  final titleController = TextEditingController();
  final subtitleController = TextEditingController();

  @override
  void initState() {
    super.initState();

    titleController.text = "";
    subtitleController.text = "";
  }

  final _formKey = GlobalKey<FormState>();

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          IconButton(
            icon: const Icon(Icons.close, color: Colors.red),
            onPressed: () => Navigator.pop(context),
          ),
          const Expanded(
            child: Text(
              'Add task',
              textAlign: TextAlign.center,
            ),
          )
        ],
      ),
      content: Column(
        mainAxisSize: MainAxisSize.min,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget>[
          const Divider(thickness: 3),

          Form(
            key: _formKey,
            child: Column(
              mainAxisSize: MainAxisSize.min,
              children: <Widget>[
                TextFormField(
                  autofocus: true,
                  controller: titleController,
                  decoration: const InputDecoration(
                    icon: Icon(Icons.title),
                    labelText: "Title",
                    hintText: "Enter task title",
                  ),
                  validator: (value) =>
                  value != null && value.isEmpty ? "Please enter a title" : null,
                  onFieldSubmitted: (_) => _submitForm(),
                ),

                TextFormField(
                  controller: subtitleController,
                  decoration: const InputDecoration(
                    icon: Icon(Icons.description),
                    labelText: "Description",
                    hintText: "Describe how you plan to achieve your goal",
                  ),
                  validator: (value) =>
                  value != null && value.isEmpty ? "Please enter a subtitle" : null,
                  onFieldSubmitted: (_) => _submitForm(),
                ),
              ],
            ),
          ),
          const SizedBox(height: 10,),

          Center(
            child: ElevatedButton(
              onPressed: _submitForm,
              child: const Text('Save'),
            ),
          ),
        ],
      ),
    );
  }
  void _submitForm() {
    if (_formKey.currentState!.validate()) {
      widget.onSubmit(titleController.text, subtitleController.text);

      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          content: Text('${titleController.text} saved!'),
        ),
      );
    }
  }
}