Block explorer row in transaction details is now implemented as an item subclass rather than being index dependent in the list

lib/src/screens/transaction_details/blockexplorer_list_item.dart

@@ -0,0 +1,8 @@
+import 'package:flutter/material.dart';
+import 'package:cake_wallet/src/screens/transaction_details/transaction_details_list_item.dart';
+
+class BlockExplorerListItem extends TransactionDetailsListItem {
+  BlockExplorerListItem({String title, String value, this.onTap})
+      : super(title: title, value: value);
+  final Function() onTap;
+}

lib/src/screens/transaction_details/transaction_details_page.dart

@@ -7,6 +7,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/src/widgets/standart_list_row.dart';
+import 'package:cake_wallet/src/screens/transaction_details/blockexplorer_list_item.dart';
 import 'package:cake_wallet/src/screens/transaction_details/standart_list_item.dart';
 import 'package:cake_wallet/src/screens/base_page.dart';
 import 'package:cake_wallet/utils/date_formatter.dart';
@@ -15,19 +16,6 @@ import 'package:url_launcher/url_launcher.dart';
 
 import 'package:hive/hive.dart';
 
-String stripURLToTXID(String inputString) {
-  final RegExp txidRegex = new RegExp('[a-z0-9]{64}');
-  return txidRegex.allMatches(inputString).first.group(0);
-}
-
-String blockExplorerName(String inputName) {
-  if (inputName.contains("xmrchain")) {
-    return "XMRChain.net";
-  } else {
-    return "Blockchain.com";
-  }
-}
-
 class TransactionDetailsPage extends BasePage {
   TransactionDetailsPage({this.transactionDetailsViewModel});
 
@@ -45,31 +33,23 @@ class TransactionDetailsPage extends BasePage {
           final item = transactionDetailsViewModel.items[index];
 
           if (item is StandartListItem) {
-            final isFinalBlockExplorerItem =
-                index == transactionDetailsViewModel.items.length - 1
-                    ? true
-                    : false;
-            if (isFinalBlockExplorerItem == false) {
-              return GestureDetector(
-                onTap: () {
-                  Clipboard.setData(ClipboardData(text: item.value));
-                  showBar<void>(context,
-                      S.of(context).transaction_details_copied(item.title));
-                },
-                child:
-                    StandartListRow(title: '${item.title}:', value: item.value),
-              );
-            } else {
-              return GestureDetector(
-                onTap: () {
-                  launch(item.value);
-                },
-                child: StandartListRow(
-                    title: '${item.title}:',
-                    value:
-                        "View transaction on ${blockExplorerName(item.value)}"),
-              );
-            }
+            return GestureDetector(
+              onTap: () {
+                Clipboard.setData(ClipboardData(text: item.value));
+                showBar<void>(context,
+                    S.of(context).transaction_details_copied(item.title));
+              },
+              child:
+                  StandartListRow(title: '${item.title}:', value: item.value),
+            );
+          }
+
+          if (item is BlockExplorerListItem) {
+            return GestureDetector(
+              onTap: item.onTap,
+              child:
+                  StandartListRow(title: '${item.title}:', value: item.value),
+            );
           }
 
           if (item is TextFieldListItem) {

lib/view_model/transaction_details_view_model.dart

@@ -4,12 +4,14 @@ import 'package:cake_wallet/monero/monero_transaction_info.dart';
 import 'package:cake_wallet/src/screens/transaction_details/standart_list_item.dart';
 import 'package:cake_wallet/src/screens/transaction_details/textfield_list_item.dart';
 import 'package:cake_wallet/src/screens/transaction_details/transaction_details_list_item.dart';
+import 'package:cake_wallet/src/screens/transaction_details/blockexplorer_list_item.dart';
 import 'package:cake_wallet/utils/date_formatter.dart';
 import 'package:cake_wallet/entities/transaction_description.dart';
 import 'package:hive/hive.dart';
 import 'package:mobx/mobx.dart';
 import 'package:cake_wallet/store/settings_store.dart';
 import 'package:cake_wallet/generated/i18n.dart';
+import 'package:url_launcher/url_launcher.dart';
 
 part 'transaction_details_view_model.g.dart';
 
@@ -41,6 +43,12 @@ abstract class TransactionDetailsViewModelBase with Store {
             value: tx.amountFormatted()),
         StandartListItem(
             title: S.current.transaction_details_fee, value: tx.feeFormatted()),
+        BlockExplorerListItem(
+            title: "View in Block Explorer",
+            value: "View Transaction on XMRChain.net",
+            onTap: () {
+              launch("https://xmrchain.net/search?value=${tx.id}");
+            })
       ];
 
       if (tx.key?.isNotEmpty ?? null) {
@@ -49,9 +57,6 @@ abstract class TransactionDetailsViewModelBase with Store {
       }
 
       items.addAll(_items);
-      items.add(StandartListItem(
-          title: "View in Block Explorer",
-          value: "https://xmrchain.net/search?value=${tx.id}"));
     }
 
     if (tx is BitcoinTransactionInfo) {
@@ -72,13 +77,16 @@ abstract class TransactionDetailsViewModelBase with Store {
         if (tx.feeFormatted()?.isNotEmpty)
           StandartListItem(
               title: S.current.transaction_details_fee,
-              value: tx.feeFormatted())
+              value: tx.feeFormatted()),
+        BlockExplorerListItem(
+            title: "View in Block Explorer",
+            value: "View Transaction on Blockchain.com",
+            onTap: () {
+              launch("https://www.blockchain.com/btc/tx/${tx.id}");
+            })
       ];
 
       items.addAll(_items);
-      items.add(StandartListItem(
-          title: "View in Block Explorer",
-          value: "https://www.blockchain.com/btc/tx/${tx.id}"));
     }
 
     if (showRecipientAddress) {