gui: add assumed confirmed state

Create a separate status for transactions that are confirmed in
a block that is assumed valid pending background validation.

Use the same icon as for transactions with a single confirmation.

doc/release-notes-28616.md

@@ -0,0 +1,6 @@
+GUI changes
+------
+
+- Transactions that are confirmed while assume utxo background sync is in progress,
+  will have a clock icon and a tooltip explaining that historical blocks are still
+  being verified. (#28616)

src/qt/transactionrecord.cpp

@@ -175,42 +175,31 @@ void TransactionRecord::updateStatus(const interfaces::WalletTxStatus& wtx, cons
 
     // For generated transactions, determine maturity
     if (type == TransactionRecord::Generated) {
-        if (wtx.blocks_to_maturity > 0)
+        if (wtx.blocks_to_maturity > 0) {
-        {
             status.status = TransactionStatus::Immature;
 
-            if (wtx.is_in_main_chain)
+            if (wtx.is_in_main_chain) {
-            {
                 status.matures_in = wtx.blocks_to_maturity;
-            }
+            } else {
-            else
-            {
                 status.status = TransactionStatus::NotAccepted;
             }
-        }
+        } else {
-        else
-        {
             status.status = TransactionStatus::Confirmed;
         }
-    }
+    } else {
-    else
+        if (status.depth < 0) {
-    {
-        if (status.depth < 0)
-        {
             status.status = TransactionStatus::Conflicted;
         }
-        else if (status.depth == 0)
+        else if (status.depth == 0) {
-        {
             status.status = TransactionStatus::Unconfirmed;
-            if (wtx.is_abandoned)
+            if (wtx.is_abandoned) {
                 status.status = TransactionStatus::Abandoned;
-        }
+            }
-        else if (status.depth < RecommendedNumConfirmations)
+        } else if (wtx.is_assumed) {
-        {
+            status.status = TransactionStatus::AssumedConfirmed;
+        } else if (status.depth < RecommendedNumConfirmations) {
             status.status = TransactionStatus::Confirming;
-        }
+        } else {
-        else
-        {
             status.status = TransactionStatus::Confirmed;
         }
     }

src/qt/transactionrecord.h

@@ -25,6 +25,7 @@ struct TransactionStatus {
         Confirmed,          /**< Have 6 or more confirmations (normal tx) or fully mature (mined tx) **/
         /// Normal (sent/received) transactions
         Unconfirmed,        /**< Not yet mined into a block **/
+        AssumedConfirmed,   /**< Confirmed, but background validation hasn't finished  */
         Confirming,         /**< Confirmed, but waiting for the recommended number of confirmations **/
         Conflicted,         /**< Conflicts with other transaction or mempool **/
         Abandoned,          /**< Abandoned from the wallet **/

src/qt/transactiontablemodel.cpp

@@ -320,6 +320,9 @@ QString TransactionTableModel::formatTxStatus(const TransactionRecord *wtx) cons
     case TransactionStatus::Abandoned:
         status = tr("Abandoned");
         break;
+    case TransactionStatus::AssumedConfirmed:
+        status = tr("%1 confirmations, pending verification of historical blocks").arg(wtx->status.depth);
+        break;
     case TransactionStatus::Confirming:
         status = tr("Confirming (%1 of %2 recommended confirmations)").arg(wtx->status.depth).arg(TransactionRecord::RecommendedNumConfirmations);
         break;
@@ -465,6 +468,8 @@ QVariant TransactionTableModel::txStatusDecoration(const TransactionRecord *wtx)
         return QIcon(":/icons/transaction_0");
     case TransactionStatus::Abandoned:
         return QIcon(":/icons/transaction_abandoned");
+    case TransactionStatus::AssumedConfirmed:
+        return QIcon(":/icons/transaction_1");
     case TransactionStatus::Confirming:
         switch(wtx->status.depth)
         {
@@ -639,7 +644,14 @@ QVariant TransactionTableModel::data(const QModelIndex &index, int role) const
             return details;
         }
     case ConfirmedRole:
-        return rec->status.status == TransactionStatus::Status::Confirming || rec->status.status == TransactionStatus::Status::Confirmed;
+        switch (rec->status.status) {
+            case TransactionStatus::Status::AssumedConfirmed:
+            case TransactionStatus::Status::Confirming:
+            case TransactionStatus::Status::Confirmed:
+                return true;
+            default:
+                return false;
+        }
     case FormattedAmountRole:
         // Used for copy/export, so don't include separators
         return formatTxAmount(rec, false, BitcoinUnits::SeparatorStyle::NEVER);