Fixes for litecoin transactions. Change fixed rate mode for exchange.

cw_bitcoin/lib/address_from_output.dart

@@ -0,0 +1,23 @@
+import 'dart:typed_data';
+import 'package:bitcoin_flutter/bitcoin_flutter.dart' as bitcoin;
+import 'package:bitcoin_flutter/src/payments/index.dart' show PaymentData;
+
+String addressFromOutput(Uint8List script, bitcoin.NetworkType networkType) {
+  try {
+    return bitcoin.P2PKH(
+        data: PaymentData(output: script),
+        network: networkType)
+      .data
+      .address;
+  } catch (_) {}
+
+  try {
+    return bitcoin.P2WPKH(
+        data: PaymentData(output: script),
+        network: networkType)
+      .data
+      .address;
+  } catch(_) {}
+
+  return null;
+}

cw_bitcoin/lib/electrum_transaction_info.dart

@@ -1,7 +1,7 @@
-import 'dart:typed_data';
 import 'package:flutter/foundation.dart';
 import 'package:bitcoin_flutter/bitcoin_flutter.dart' as bitcoin;
 import 'package:bitcoin_flutter/src/payments/index.dart' show PaymentData;
+import 'package:cw_bitcoin/address_from_output.dart';
 import 'package:cw_bitcoin/bitcoin_address_record.dart';
 import 'package:cw_bitcoin/bitcoin_amount_format.dart';
 import 'package:cw_core/transaction_direction.dart';
@@ -9,26 +9,6 @@ import 'package:cw_core/transaction_info.dart';
 import 'package:cw_core/format_amount.dart';
 import 'package:cw_core/wallet_type.dart';
 
-String addressFromOutput(Uint8List script) {
-  try {
-    return bitcoin.P2PKH(
-        data: PaymentData(output: script),
-        network: bitcoin.bitcoin)
-      .data
-      .address;
-  } catch (_) {}
-
-  try {
-    return bitcoin.P2WPKH(
-        data: PaymentData(output: script),
-        network: bitcoin.bitcoin)
-      .data
-      .address;
-  } catch(_) {}
-
-  return null;
-}
-
 class ElectrumTransactionBundle {
   ElectrumTransactionBundle(this.originalTransaction, {this.ins, this.time, this.confirmations});
   final bitcoin.Transaction originalTransaction;
@@ -114,8 +94,11 @@ class ElectrumTransactionInfo extends TransactionInfo {
   }
 
   factory ElectrumTransactionInfo.fromElectrumBundle(
-      ElectrumTransactionBundle bundle, WalletType type,
-      {@required Set<String> addresses, int height}) {
+      ElectrumTransactionBundle bundle,
+      WalletType type,
+      bitcoin.NetworkType networkType,
+      {@required Set<String> addresses,
+        int height}) {
     final date = bundle.time != null
       ? DateTime.fromMillisecondsSinceEpoch(bundle.time * 1000)
       : DateTime.now();
@@ -129,7 +112,7 @@ class ElectrumTransactionInfo extends TransactionInfo {
       final inputTransaction = bundle.ins[i];
       final vout = input.index;
       final outTransaction = inputTransaction.outs[vout];
-      final address = addressFromOutput(outTransaction.script);
+      final address = addressFromOutput(outTransaction.script, networkType);
       inputAmount += outTransaction.value;
       if (addresses.contains(address)) {
         direction = TransactionDirection.outgoing;
@@ -138,7 +121,7 @@ class ElectrumTransactionInfo extends TransactionInfo {
 
     for (final out in bundle.originalTransaction.outs) {
       totalOutAmount += out.value;
-      final address = addressFromOutput(out.script);
+      final address = addressFromOutput(out.script, networkType);
       final addressExists = addresses.contains(address);
       if ((direction == TransactionDirection.incoming && addressExists) ||
           (direction == TransactionDirection.outgoing && !addressExists)) {

cw_bitcoin/lib/electrum_wallet.dart

@@ -505,7 +505,11 @@ abstract class ElectrumWalletBase extends WalletBase<ElectrumBalance,
     final tx = await getTransactionExpanded(hash: hash, height: height);
     final addresses = walletAddresses.addresses.map((addr) => addr.address).toSet();
     return ElectrumTransactionInfo.fromElectrumBundle(
-      tx,walletInfo.type, addresses: addresses, height: height);
+      tx,
+      walletInfo.type,
+      networkType,
+      addresses: addresses,
+      height: height);
   }
 
   @override

lib/src/screens/exchange/exchange_page.dart

@@ -317,21 +317,6 @@ class ExchangePage extends BasePage {
                         ],
                       ),
                     ),
-                    Padding(
-                        padding: EdgeInsets.only(top: 12, left: 24),
-                        child: Row(
-                          mainAxisAlignment: MainAxisAlignment.start,
-                          children: [
-                            StandardCheckbox(
-                              key: checkBoxKey,
-                              value: exchangeViewModel.isFixedRateMode,
-                              caption: S.of(context).fixed_rate,
-                              onChanged: (value) =>
-                              exchangeViewModel.isFixedRateMode = value,
-                            ),
-                          ],
-                        )
-                    ),
                     Padding(
                       padding: EdgeInsets.only(top: 30, left: 24, bottom: 24),
                       child: Row(
@@ -743,42 +728,15 @@ class ExchangePage extends BasePage {
     });
 
     _receiveAmountFocus.addListener(() {
-      if (_receiveAmountFocus.hasFocus && !exchangeViewModel.isFixedRateMode) {
-        showPopUp<void>(
-            context: context,
-            builder: (BuildContext context) {
-              return AlertWithTwoActions(
-                  alertTitle: S.of(context).exchange,
-                  alertContent: S.of(context).fixed_rate_alert,
-                  leftButtonText: S.of(context).cancel,
-                  rightButtonText: S.of(context).ok,
-                  actionLeftButton: () {
-                    FocusScope.of(context).unfocus();
-                    Navigator.of(context).pop();
-                  },
-                  actionRightButton: () {
-                    exchangeViewModel.isFixedRateMode = true;
-                    checkBoxKey.currentState
-                        .changeValue(exchangeViewModel.isFixedRateMode);
-                    Navigator.of(context).pop();
-                  });
-            });
-      }
+      exchangeViewModel.isFixedRateMode = true;
+      exchangeViewModel.changeReceiveAmount(
+        amount: receiveAmountController.text);
     });
 
-    reaction((_) => exchangeViewModel.isFixedRateMode, (bool isFixedRateMode) {
-      if ((_receiveAmountFocus.hasFocus ||
-           exchangeViewModel.isReceiveAmountEntered) && !isFixedRateMode) {
-        FocusScope.of(context).unfocus();
-        receiveAmountController.text = '';
-      } else {
-        exchangeViewModel.changeDepositAmount(
-            amount: depositAmountController.text);
-      }
-
-      checkBoxKey.currentState
-          .changeValue(exchangeViewModel.isFixedRateMode);
-      exchangeViewModel.loadLimits();
+    _depositAmountFocus.addListener(() {
+      exchangeViewModel.isFixedRateMode = false;
+      exchangeViewModel.changeDepositAmount(
+        amount: depositAmountController.text);
     });
 
     _isReactionsSet = true;

lib/view_model/exchange/exchange_view_model.dart

@@ -64,7 +64,7 @@ abstract class ExchangeViewModelBase with Store {
     loadLimits();
     reaction(
       (_) => isFixedRateMode,
-      (Object _) => _defineIsReceiveAmountEditable());
+      (Object _) => loadLimits());
   }
 
   final WalletBase wallet;
@@ -439,6 +439,6 @@ abstract class ExchangeViewModelBase with Store {
       isReceiveAmountEditable = false;
     }*/
     //isReceiveAmountEditable = false;
-    isReceiveAmountEditable = (isFixedRateMode ?? false) && provider is ChangeNowExchangeProvider;
+    isReceiveAmountEditable = provider is ChangeNowExchangeProvider;
   }
 }