CW-994 mweb enhancements

cw_bitcoin/lib/electrum_wallet.dart

@@ -808,6 +808,14 @@ abstract class ElectrumWalletBase
       throw BitcoinTransactionNoDustException();
     }
 
+    // if mweb isn't enabled, don't consider spending mweb coins:
+    if (this is LitecoinWallet) {
+      var mwebEnabled = (this as LitecoinWallet).mwebEnabled;
+      if (!mwebEnabled) {
+        coinTypeToSpendFrom = UnspentCoinType.nonMweb;
+      }
+    }
+
     final utxoDetails = _createUTXOS(
       sendAll: false,
       credentialsAmount: credentialsAmount,

cw_bitcoin/lib/litecoin_wallet.dart

@@ -845,6 +845,8 @@ abstract class LitecoinWalletBase extends ElectrumWallet with Store {
       if (unspent.vout == 0) {
         unspent.isChange = true;
       }
+
+      // printV("unspent: $unspent ${unspent.vout} ${utxo.value}");
       mwebUnspentCoins.add(unspent);
     });
 
@@ -1058,13 +1060,26 @@ abstract class LitecoinWalletBase extends ElectrumWallet with Store {
   @override
   Future<PendingTransaction> createTransaction(Object credentials) async {
     try {
-      var tx = await super.createTransaction(credentials) as PendingBitcoinTransaction;
-      tx.isMweb = mwebEnabled;
+      var creds;
+      if (!mwebEnabled) {
+        BitcoinTransactionCredentials btcCreds = (credentials as BitcoinTransactionCredentials);
+        // sets unspent coin type to nonMweb:
+        creds = BitcoinTransactionCredentials(
+          btcCreds.outputs,
+          priority: btcCreds.priority,
+          feeRate: btcCreds.feeRate,
+          coinTypeToSpendFrom: UnspentCoinType.nonMweb,
+        );
+      } else {
+        creds = credentials;
+      }
+      var tx = await super.createTransaction(creds as Object) as PendingBitcoinTransaction;
+      tx.useMwebToSubmit = mwebEnabled;
 
       if (!mwebEnabled) {
-        tx.changeAddressOverride =
-            (await (walletAddresses as LitecoinWalletAddresses).getChangeAddress(coinTypeToSpendFrom: UnspentCoinType.nonMweb))
-                .address;
+        tx.changeAddressOverride = (await (walletAddresses as LitecoinWalletAddresses)
+                .getChangeAddress(coinTypeToSpendFrom: UnspentCoinType.nonMweb))
+            .address;
         return tx;
       }
       await waitForMwebAddresses();
@@ -1088,17 +1103,17 @@ abstract class LitecoinWalletBase extends ElectrumWallet with Store {
         final address = output.address.toLowerCase();
         final extractedAddress = output.extractedAddress?.toLowerCase();
 
-        if (address.contains("mweb")) {
+        if (address.startsWith("ltcmweb")) {
           hasMwebOutput = true;
         }
-        if (!address.contains("mweb")) {
+        if (!address.startsWith("ltcmweb")) {
           hasRegularOutput = true;
         }
         if (extractedAddress != null && extractedAddress.isNotEmpty) {
-          if (extractedAddress.contains("mweb")) {
+          if (extractedAddress.startsWith("ltcmweb")) {
             hasMwebOutput = true;
           }
-          if (!extractedAddress.contains("mweb")) {
+          if (!extractedAddress.startsWith("ltcmweb")) {
             hasRegularOutput = true;
           }
         }
@@ -1117,10 +1132,12 @@ abstract class LitecoinWalletBase extends ElectrumWallet with Store {
       bool isRegular = !hasMwebInput && !hasMwebOutput;
       bool shouldNotUseMwebChange = isPegIn || isRegular || !hasMwebInput;
       tx.changeAddressOverride = (await (walletAddresses as LitecoinWalletAddresses)
-              .getChangeAddress(coinTypeToSpendFrom: shouldNotUseMwebChange ? UnspentCoinType.nonMweb : UnspentCoinType.any))
+              .getChangeAddress(
+                  coinTypeToSpendFrom:
+                      shouldNotUseMwebChange ? UnspentCoinType.nonMweb : UnspentCoinType.any))
           .address;
       if (isRegular) {
-        tx.isMweb = false;
+        tx.useMwebToSubmit = false;
         return tx;
       }
 

cw_bitcoin/lib/litecoin_wallet_addresses.dart

@@ -175,7 +175,7 @@ abstract class LitecoinWalletAddressesBase extends ElectrumWalletAddresses with
         if (!element.isSending || element.isFrozen) {
           return;
         }
-        if (element.address.contains("mweb")) {
+        if (element.address.startsWith("ltcmweb")) {
           comesFromMweb = true;
         }
       });

cw_bitcoin/lib/pending_bitcoin_transaction.dart

@@ -23,7 +23,7 @@ class PendingBitcoinTransaction with PendingTransaction {
     required this.hasChange,
     this.isSendAll = false,
     this.hasTaprootInputs = false,
-    this.isMweb = false,
+    this.useMwebToSubmit = false,
     this.utxos = const [],
   }) : _listeners = <void Function(ElectrumTransactionInfo transaction)>[];
 
@@ -38,7 +38,7 @@ class PendingBitcoinTransaction with PendingTransaction {
   final bool hasChange;
   final bool hasTaprootInputs;
   List<UtxoWithAddress> utxos;
-  bool isMweb;
+  bool useMwebToSubmit;
   String? changeAddressOverride;
   String? idOverride;
   String? hexOverride;
@@ -129,7 +129,7 @@ class PendingBitcoinTransaction with PendingTransaction {
 
   @override
   Future<void> commit() async {
-    if (isMweb) {
+    if (useMwebToSubmit) {
       await _ltcCommit();
     } else {
       await _commit();

lib/view_model/transaction_details_view_model.dart

@@ -58,6 +58,7 @@ abstract class TransactionDetailsViewModelBase with Store {
         if (!canReplaceByFee) _checkForRBF(tx);
         break;
       case WalletType.litecoin:
+        _addLitecoinListItems(tx, dateFormat);
       case WalletType.bitcoinCash:
         _addElectrumListItems(tx, dateFormat);
         break;
@@ -341,6 +342,30 @@ abstract class TransactionDetailsViewModelBase with Store {
     items.addAll(_items);
   }
 
+  void _addLitecoinListItems(TransactionInfo tx, DateFormat dateFormat) {
+    _addElectrumListItems(tx, dateFormat);
+
+    bool isMweb = bitcoin!.txIsMweb(tx);
+
+    final _items = [
+      if (isMweb)
+        BlockExplorerListItem(
+          title: S.current.view_in_block_explorer,
+          value: S.current.view_transaction_on + 'mwebexplorer.com',
+          onTap: () async {
+            try {
+              final uri = Uri.parse('https://www.mwebexplorer.com/blocks/block/${tx.height}');
+              if (await canLaunchUrl(uri))
+                await launchUrl(uri, mode: LaunchMode.externalApplication);
+            } catch (e) {}
+          },
+          key: ValueKey('block_explorer_list_item_mweb_wallet_type_key'),
+        ),
+    ];
+
+    items.addAll(_items);
+  }
+
   void _addHavenListItems(TransactionInfo tx, DateFormat dateFormat) {
     items.addAll([
       StandartListItem(