cake_wallet/lib/src/screens/send/send_template_page.dart

import 'package:cake_wallet/src/widgets/address_text_field.dart';
import 'package:cake_wallet/src/widgets/base_text_form_field.dart';
import 'package:cake_wallet/src/widgets/primary_button.dart';
import 'package:cake_wallet/src/widgets/scollable_with_bottom_section.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:cake_wallet/src/screens/base_page.dart';
import 'package:cake_wallet/generated/i18n.dart';
import 'package:cake_wallet/view_model/send/send_view_model.dart';
import 'package:flutter/services.dart';
import 'package:flutter_mobx/flutter_mobx.dart';
import 'package:mobx/mobx.dart';

class SendTemplatePage extends BasePage {
  SendTemplatePage({@required this.sendViewModel});

  final SendViewModel sendViewModel;
  final _addressController = TextEditingController();
  final _cryptoAmountController = TextEditingController();
  final _fiatAmountController = TextEditingController();
  final _nameController = TextEditingController();
  final _formKey = GlobalKey<FormState>();

  bool _effectsInstalled = false;

  @override
  String get title => S.current.exchange_new_template;

  @override
  Color get titleColor => Colors.white;

  @override
  bool get resizeToAvoidBottomPadding => false;

  @override
  bool get extendBodyBehindAppBar => true;

  @override
  AppBarStyle get appBarStyle => AppBarStyle.transparent;

  @override
  Widget body(BuildContext context) {
    _setEffects(context);

    return Container(
      color: Theme.of(context).backgroundColor,
      child: ScrollableWithBottomSection(
        contentPadding: EdgeInsets.only(bottom: 24),
        content: Container(
          decoration: BoxDecoration(
            borderRadius: BorderRadius.only(
                bottomLeft: Radius.circular(24),
                bottomRight: Radius.circular(24)
            ),
            gradient: LinearGradient(colors: [
              Theme.of(context).primaryTextTheme.subhead.color,
              Theme.of(context).primaryTextTheme.subhead.decorationColor,
            ], begin: Alignment.topLeft, end: Alignment.bottomRight),
          ),
          child: Form(
            key: _formKey,
            child: Column(children: <Widget>[
              Padding(
                padding: EdgeInsets.fromLTRB(24, 90, 24, 32),
                child: Column(
                  children: <Widget>[
                    BaseTextFormField(
                      controller: _nameController,
                      hintText: S.of(context).send_name,
                      borderColor: Theme.of(context)
                          .primaryTextTheme
                          .headline
                          .color,
                      textStyle: TextStyle(
                          fontSize: 14,
                          fontWeight: FontWeight.w500,
                          color: Colors.white),
                      placeholderTextStyle: TextStyle(
                          color: Theme.of(context)
                              .primaryTextTheme
                              .headline
                              .decorationColor,
                          fontWeight: FontWeight.w500,
                          fontSize: 14),
                      validator: sendViewModel.templateValidator,
                    ),
                    Padding(
                      padding: EdgeInsets.only(top: 20),
                      child: AddressTextField(
                        controller: _addressController,
                        onURIScanned: (uri) {
                          var address = '';
                          var amount = '';

                          if (uri != null) {
                            address = uri.path;
                            amount = uri.queryParameters['tx_amount'];
                          } else {
                            address = uri.toString();
                          }

                          _addressController.text = address;
                          _cryptoAmountController.text = amount;
                        },
                        options: [
                          AddressTextFieldOption.paste,
                          AddressTextFieldOption.qrCode,
                          AddressTextFieldOption.addressBook
                        ],
                        buttonColor:
                        Theme.of(context).primaryTextTheme.display1.color,
                        borderColor:
                        Theme.of(context).primaryTextTheme.headline.color,
                        textStyle: TextStyle(
                            fontSize: 14,
                            fontWeight: FontWeight.w500,
                            color: Colors.white),
                        hintStyle: TextStyle(
                            fontSize: 14,
                            fontWeight: FontWeight.w500,
                            color: Theme.of(context)
                                .primaryTextTheme
                                .headline
                                .decorationColor),
                        validator: sendViewModel.addressValidator,
                      ),
                    ),
                    Observer(builder: (_) {
                      return Padding(
                          padding: const EdgeInsets.only(top: 20),
                          child: BaseTextFormField(
                              controller: _cryptoAmountController,
                              keyboardType: TextInputType.numberWithOptions(
                                  signed: false, decimal: true),
                              inputFormatters: [
                                BlacklistingTextInputFormatter(
                                    RegExp('[\\-|\\ |\\,]'))
                              ],
                              prefixIcon: Padding(
                                padding: EdgeInsets.only(top: 9),
                                child:
                                Text(sendViewModel.currency.title + ':',
                                    style: TextStyle(
                                      fontSize: 16,
                                      fontWeight: FontWeight.w600,
                                      color: Colors.white,
                                    )),
                              ),
                              hintText: '0.0000',
                              borderColor: Theme.of(context)
                                  .primaryTextTheme
                                  .headline
                                  .color,
                              textStyle: TextStyle(
                                  fontSize: 14,
                                  fontWeight: FontWeight.w500,
                                  color: Colors.white),
                              placeholderTextStyle: TextStyle(
                                  color: Theme.of(context)
                                      .primaryTextTheme
                                      .headline
                                      .decorationColor,
                                  fontWeight: FontWeight.w500,
                                  fontSize: 14),
                              validator: sendViewModel.amountValidator));
                    }),
                    Padding(
                        padding: const EdgeInsets.only(top: 20),
                        child: BaseTextFormField(
                          controller: _fiatAmountController,
                          keyboardType: TextInputType.numberWithOptions(
                              signed: false, decimal: true),
                          inputFormatters: [
                            BlacklistingTextInputFormatter(
                                RegExp('[\\-|\\ |\\,]'))
                          ],
                          prefixIcon: Padding(
                            padding: EdgeInsets.only(top: 9),
                            child: Text(sendViewModel.fiat.title + ':',
                                style: TextStyle(
                                  fontSize: 16,
                                  fontWeight: FontWeight.w600,
                                  color: Colors.white,
                                )),
                          ),
                          hintText: '0.00',
                          borderColor: Theme.of(context)
                              .primaryTextTheme
                              .headline
                              .color,
                          textStyle: TextStyle(
                              fontSize: 14,
                              fontWeight: FontWeight.w500,
                              color: Colors.white),
                          placeholderTextStyle: TextStyle(
                              color: Theme.of(context)
                                  .primaryTextTheme
                                  .headline
                                  .decorationColor,
                              fontWeight: FontWeight.w500,
                              fontSize: 14),
                        )),
                  ],
                ),
              )
            ]),
          ),
        ),
        bottomSectionPadding: EdgeInsets.only(left: 24, right: 24, bottom: 24),
        bottomSection: PrimaryButton(
            onPressed: () {
              if (_formKey.currentState.validate()) {
                // sendViewModel.sendTemplateStore.addTemplate(
                //     name: _nameController.text,
                //     address: _addressController.text,
                //     cryptoCurrency: sendViewModel.currency.title,
                //     amount: _cryptoAmountController.text);
                // sendViewModel.sendTemplateStore.update();
                Navigator.of(context).pop();
              }
            },
            text: S.of(context).save,
            color: Colors.green,
            textColor: Colors.white),
      ),
    );
  }

  void _setEffects(BuildContext context) {
    if (_effectsInstalled) {
      return;
    }

    reaction((_) => sendViewModel.fiatAmount, (String amount) {
      if (amount != _fiatAmountController.text) {
        _fiatAmountController.text = amount;
      }
    });

    reaction((_) => sendViewModel.cryptoAmount, (String amount) {
      if (amount != _cryptoAmountController.text) {
        _cryptoAmountController.text = amount;
      }
    });

    reaction((_) => sendViewModel.address, (String address) {
      if (address != _addressController.text) {
        _addressController.text = address;
      }
    });

    _addressController.addListener(() {
      final address = _addressController.text;

      if (sendViewModel.address != address) {
        sendViewModel.address = address;
      }
    });

    _effectsInstalled = true;
  }
}