cake_wallet/lib/src/widgets/address_text_field.dart

import 'package:cake_wallet/routes.dart';
import 'package:flutter/material.dart';
import 'package:cake_wallet/palette.dart';
import 'package:cake_wallet/generated/i18n.dart';
import 'package:cake_wallet/src/domain/common/contact.dart';
import 'package:cake_wallet/src/domain/monero/subaddress.dart';
import 'package:cake_wallet/src/domain/common/qr_scanner.dart';

enum AddressTextFieldOption { qrCode, addressBook, subaddressList }

class AddressTextField extends StatelessWidget {
  static const prefixIconWidth = 34.0;
  static const prefixIconHeight = 34.0;
  static const spaceBetweenPrefixIcons = 10.0;

  final TextEditingController controller;
  final bool isActive;
  final String placeholder;
  final Function(Uri) onURIScanned;
  final List<AddressTextFieldOption> options;
  final FormFieldValidator<String> validator;

  AddressTextField(
      {@required this.controller,
      this.isActive = true,
      this.placeholder,
      this.options = const [
        AddressTextFieldOption.qrCode,
        AddressTextFieldOption.addressBook
      ],
      this.onURIScanned,
      this.validator});

  @override
  Widget build(BuildContext context) {
    return TextFormField(
      onFieldSubmitted: (_) => FocusScope.of(context).unfocus(),
      enabled: isActive,
      controller: controller,
      decoration: InputDecoration(
        suffixIcon: SizedBox(
          width: prefixIconWidth * options.length +
              (spaceBetweenPrefixIcons * options.length),
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              SizedBox(width: 5),
              if (this.options.contains(AddressTextFieldOption.qrCode)) ...[
                Container(
                    width: prefixIconWidth,
                    height: prefixIconHeight,
                    padding: EdgeInsets.only(top: 0),
                    child: InkWell(
                      onTap: () async => _presentQRScanner(context),
                      child: Container(
                          padding: EdgeInsets.all(8),
                          decoration: BoxDecoration(
                              color: Palette.wildDarkBlueWithOpacity,
                              borderRadius:
                                  BorderRadius.all(Radius.circular(8))),
                          child: Image.asset('assets/images/qr_code_icon.png')),
                    ))
              ],
              if (this
                  .options
                  .contains(AddressTextFieldOption.addressBook)) ...[
                Container(
                    width: prefixIconWidth,
                    height: prefixIconHeight,
                    padding: EdgeInsets.only(top: 0),
                    child: InkWell(
                      onTap: () async => _presetAddressBookPicker(context),
                      child: Container(
                          padding: EdgeInsets.all(8),
                          decoration: BoxDecoration(
                              color: Palette.wildDarkBlueWithOpacity,
                              borderRadius:
                                  BorderRadius.all(Radius.circular(8))),
                          child: Image.asset(
                              'assets/images/address_book_icon.png')),
                    ))
              ],
              if (this
                  .options
                  .contains(AddressTextFieldOption.subaddressList)) ...[
                Container(
                    width: prefixIconWidth,
                    height: prefixIconHeight,
                    padding: EdgeInsets.only(top: 0),
                    child: InkWell(
                      onTap: () async => _presetSubaddressListPicker(context),
                      child: Container(
                          padding: EdgeInsets.all(8),
                          decoration: BoxDecoration(
                              color: Palette.wildDarkBlueWithOpacity,
                              borderRadius:
                                  BorderRadius.all(Radius.circular(8))),
                          child: Image.asset(
                              'assets/images/receive_icon_raw.png')),
                    ))
              ],
            ],
          ),
        ),
        hintStyle: TextStyle(color: Theme.of(context).hintColor),
        hintText: placeholder ?? S.current.widgets_address,
        focusedBorder: UnderlineInputBorder(
            borderSide:
                BorderSide(color: Palette.cakeGreen, width: 2.0)),
        enabledBorder: UnderlineInputBorder(
            borderSide:
                BorderSide(color: Theme.of(context).focusColor, width: 1.0)),
      ),
      validator: validator,
    );
  }

  Future _presentQRScanner(BuildContext context) async {
    try {
      String code = await presentQRScanner();
      var uri = Uri.parse(code);
      var address = '';

      if (uri == null) {
        controller.text = code;
        return;
      }

      address = uri.path;
      controller.text = address;

      if (onURIScanned != null) {
        onURIScanned(uri);
      }
    } catch (e) {
      print('Error $e');
    }
  }

  Future _presetAddressBookPicker(BuildContext context) async {
    final contact = await Navigator.of(context, rootNavigator: true)
        .pushNamed(Routes.pickerAddressBook);

    if (contact is Contact && contact.address != null) {
      controller.text = contact.address;
    }
  }

  Future _presetSubaddressListPicker(BuildContext context) async {
    final subaddress = await Navigator.of(context, rootNavigator: true)
        .pushNamed(Routes.subaddressList);

    if (subaddress is Subaddress && subaddress.address != null) {
      controller.text = subaddress.address;
    }
  }
}