Widget build()

in firebase-get-to-know-flutter/step_06/lib/src/authentication.dart [244:333]
90 lines of code
5 McCabe index (conditional complexity)

  Widget build(BuildContext context) {
    return Column(
      children: [
        const Header('Create account'),
        Padding(
          padding: const EdgeInsets.all(8.0),
          child: Form(
            key: _formKey,
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: <Widget>[
                Padding(
                  padding: const EdgeInsets.symmetric(horizontal: 24),
                  child: TextFormField(
                    controller: _emailController,
                    decoration: const InputDecoration(
                      hintText: 'Enter your email',
                    ),
                    validator: (value) {
                      if (value!.isEmpty) {
                        return 'Enter your email address to continue';
                      }
                      return null;
                    },
                  ),
                ),
                Padding(
                  padding: const EdgeInsets.symmetric(horizontal: 24),
                  child: TextFormField(
                    controller: _displayNameController,
                    decoration: const InputDecoration(
                      hintText: 'First & last name',
                    ),
                    validator: (value) {
                      if (value!.isEmpty) {
                        return 'Enter your account name';
                      }
                      return null;
                    },
                  ),
                ),
                Padding(
                  padding: const EdgeInsets.symmetric(horizontal: 24),
                  child: TextFormField(
                    controller: _passwordController,
                    decoration: const InputDecoration(
                      hintText: 'Password',
                    ),
                    obscureText: true,
                    validator: (value) {
                      if (value!.isEmpty) {
                        return 'Enter your password';
                      }
                      return null;
                    },
                  ),
                ),
                Padding(
                  padding: const EdgeInsets.symmetric(vertical: 16),
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.end,
                    children: [
                      TextButton(
                        onPressed: widget.cancel,
                        child: const Text('CANCEL'),
                      ),
                      const SizedBox(width: 16),
                      StyledButton(
                        onPressed: () {
                          if (_formKey.currentState!.validate()) {
                            widget.registerAccount(
                              _emailController.text,
                              _displayNameController.text,
                              _passwordController.text,
                            );
                          }
                        },
                        child: const Text('SAVE'),
                      ),
                      const SizedBox(width: 30),
                    ],
                  ),
                ),
              ],
            ),
          ),
        ),
      ],
    );
  }